1
Commit Graph

471 Commits

Author SHA1 Message Date
Al Viro
5f60d5f6bb move asm/unaligned.h to linux/unaligned.h
asm/unaligned.h is always an include of asm-generic/unaligned.h;
might as well move that thing to linux/unaligned.h and include
that - there's nothing arch-specific in that header.

auto-generated by the following:

for i in `git grep -l -w asm/unaligned.h`; do
	sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i
done
for i in `git grep -l -w asm-generic/unaligned.h`; do
	sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i
done
git mv include/asm-generic/unaligned.h include/linux/unaligned.h
git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h
sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild
sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
2024-10-02 17:23:23 -04:00
Al Viro
cb787f4ac0 [tree-wide] finally take no_llseek out
no_llseek had been defined to NULL two years ago, in commit 868941b144
("fs: remove no_llseek")

To quote that commit,

  At -rc1 we'll need do a mechanical removal of no_llseek -

  git grep -l -w no_llseek | grep -v porting.rst | while read i; do
	sed -i '/\<no_llseek\>/d' $i
  done

  would do it.

Unfortunately, that hadn't been done.  Linus, could you do that now, so
that we could finally put that thing to rest? All instances are of the
form
	.llseek = no_llseek,
so it's obviously safe.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-09-27 08:18:43 -07:00
Peng Fan
61c9f03e22 firmware: arm_scmi: Add initial support for i.MX MISC protocol
i.MX95 System Manager(SM) firmware includes a SCMI vendor protocol, SCMI
MISC protocol which includes controls that are misc settings/actions that
must be exposed from the SM to agents. They are device specific and are
usually define to access bit fields in various mix block control modules,
IOMUX_GPR, and other General Purpose registers, Control Status Registers
owned by the SM.

Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20240823-imx95-bbm-misc-v2-v8-3-e600ed9e9271@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-28 21:54:13 +01:00
Peng Fan
41845541ad firmware: arm_scmi: Add initial support for i.MX BBM protocol
i.MX95 has a battery-backed module(BBM), which has persistent storage
(GPR), an RTC, and the ON/OFF button. The System Manager(SM) firmware
use SCMI vendor protocol(SCMI BBM) to let agent be able to use GPR, RTC
and ON/OFF button.

Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20240823-imx95-bbm-misc-v2-v8-2-e600ed9e9271@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-28 21:54:03 +01:00
Peng Fan
c66beeab74 firmware: arm_scmi: Add NXP i.MX95 SCMI documentation
Add NXP i.MX95 System Control Management Interface(SCMI) vendor
extensions protocol documentation.

Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20240823-imx95-bbm-misc-v2-v8-4-e600ed9e9271@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-28 21:53:54 +01:00
Sudeep Holla
c4b908a23f firmware: arm_scmi: Replace comma with the semicolon
Replace the typo comma with the semicolon. No functional change.

Message-Id: <20240827143838.1465913-4-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-28 17:16:25 +01:00
Sudeep Holla
ccf5021931 firmware: arm_scmi: Replace the use of of_node_put() to __free(device_node)
Use __free for device_node values, and thus drop calls to of_node_put.

The goal is simplify of_node reference cleanup by using this scope-based
of_node_put() cleanup to simplify function exit handling. When using __free
a resource is allocated within a block, it is automatically freed at the
end of the block.

This cleanup aligns well with the recent change in shmem.c to use __free
instead of explicit of_node_put() calls.

Message-Id: <20240827143838.1465913-3-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-28 17:16:25 +01:00
Sudeep Holla
50db2ef5c7 firmware: arm_scmi: Fix trivial whitespace/coding style issues
Fix couple of unnecessary multiple blank lines and spaces instead of
tabs.

No functional change.

Message-Id: <20240827143838.1465913-2-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-28 17:16:25 +01:00
Cristian Marussi
1780e411ef firmware: arm_scmi: Use max-rx-timeout-ms from devicetree
Override default maximum RX timeout with the value picked from the
devicetree, when provided.

Suggested-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Peng Fan <peng.fan@nxp.com>  #i.MX95 19x19 EVK
Message-Id: <20240730144707.1647025-4-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-18 20:22:16 +01:00
Cristian Marussi
668f0cb233 firmware: arm_scmi: Remove const from transport descriptors
The descriptor structure scmi_desc contains a variety of fields related to
the transport functionalities and it is defined by the transport drivers
themselves; such elements, though, serve varied purposes and have different
lifetime.

In particular, while there are some of those elements that provide a
description of transport features that are supposed to be immutable, on
the other side there are present also some other characteristics that are
instead supposed to be configurable on a per-platform base since they
represent configuration features tied to the specific hardware/firmware
system.

The immutable fields are already qualified as const on the their own; get
rid of the structure-level const qualifier which is not needed, so as to
enable possible runtime customization of the mutable configuration
features.

No functional change.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Peng Fan <peng.fan@nxp.com>  #i.MX95 19x19 EVK
Message-Id: <20240730144707.1647025-2-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-18 20:22:16 +01:00
Krzysztof Kozlowski
a8bd37e645 firmware: arm_scmi: Simplify with scoped for each OF child loop
Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240816151407.155034-1-krzysztof.kozlowski@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-18 20:22:16 +01:00
Cristian Marussi
be9f086524 firmware: arm_scmi: Update various protocols versions
A few protocol versions had been increased with SCMI v3.2.
Update accordingly the supported version define in the kernel stack,
since all the mandatory base commands are indeed already supported.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240812174027.3931160-1-cristian.marussi@arm.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-16 10:26:58 +01:00
Cristian Marussi
fc789363c9 firmware: arm_scmi: Remove legacy transport-layer code
Since all SCMI transports have been made standalone drivers, remove all the
core SCMI stack legacy support that was needed to run transports as built
into the stack.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240812173340.3912830-10-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-16 10:26:58 +01:00
Cristian Marussi
20bda12a0e firmware: arm_scmi: Make VirtIO transport a standalone driver
Make SCMI VirtIO transport a standalone driver that can be optionally
loaded as a module.

CC: Michael S. Tsirkin <mst@redhat.com>
CC: Igor Skalkin <igor.skalkin@opensynergy.com>
CC: Peter Hilber <peter.hilber@opensynergy.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240812173340.3912830-9-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-16 10:26:58 +01:00
Cristian Marussi
db9cc5e677 firmware: arm_scmi: Make OPTEE transport a standalone driver
Make SCMI OPTEE transport a standalone driver that can be optionally
loaded as a module.

CC: Etienne Carriere <etienne.carriere@foss.st.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240812173340.3912830-8-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-16 10:26:58 +01:00
Cristian Marussi
a41759500b firmware: arm_scmi: Make SMC transport a standalone driver
Make SCMI SMC transport a standalone driver that can be optionally
loaded as a module.

CC: Peng Fan <peng.fan@nxp.com>
CC: Nikunj Kela <quic_nkela@quicinc.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
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 <sudeep.holla@arm.com>
2024-08-16 10:26:06 +01:00
Cristian Marussi
b53515fa17 firmware: arm_scmi: Make MBOX transport a standalone driver
Make SCMI mailbox transport a standalone driver that can be optionally
loaded as a module; while at it, create a dedicated subdirectory and
submenu for SCMI Transports.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240812173340.3912830-6-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-13 12:15:12 +01:00
Cristian Marussi
8b76a8c959 firmware: arm_scmi: Add support for standalone transport drivers
Extend the core SCMI stack with structures and methods to allow for
transports to be split out as standalone drivers, while still supporting
old style transports, defined as built into the SCMI core stack.

No functional change.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Peng Fan <peng.fan@nxp.com>  #i.MX95 19x19 EVK
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Message-Id: <20240812173340.3912830-5-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-13 12:15:12 +01:00
Cristian Marussi
b6b7c77c98 firmware: arm_scmi: Introduce packet handling helpers
Introduce a pair of structures initialized to contain all the existing
packet handling helpers, both for transports based on shared memory
and messages.

No functional change.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Peng Fan <peng.fan@nxp.com>  #i.MX95 19x19 EVK
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Message-Id: <20240812173340.3912830-4-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-13 12:15:12 +01:00
Peng Fan
1ebc28e935 firmware: arm_scmi: Introduce setup_shmem_iomap
To get the address of shmem could be generalized by introducing
setup_shmem_iomap. Then the duplicated code in mailbox.c, optee.c
and smc.c could be dropped.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
[ Cristian: use OF __free and make use of the new helper also in smc.c ]
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Peng Fan <peng.fan@nxp.com>  #i.MX95 19x19 EVK
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Message-Id: <20240812173340.3912830-3-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-13 12:15:12 +01:00
Cristian Marussi
e98dba934b firmware: arm_scmi: Fix double free in OPTEE transport
Channels can be shared between protocols, avoid freeing the same channel
descriptors twice when unloading the stack.

Fixes: 5f90f189a0 ("firmware: arm_scmi: Add optee transport")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Peng Fan <peng.fan@nxp.com>  #i.MX95 19x19 EVK
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Message-Id: <20240812173340.3912830-2-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-13 12:15:12 +01:00
Etienne Carriere
eedc060cff firmware: arm_scmi: Fix voltage description in failure cases
Reset the reception buffer max size when a voltage domain description
request fails, for example when the voltage domain returns an access
permission error (SCMI_ERR_ACCESS) unless what only a single 32bit
word is read back for the remaining voltage description requests
responses leading to invalid information. The side effect of this
issue is that the voltage regulators registered from those remaining
SCMI voltage domain were assigned a wrong regulator name.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240725065317.3758165-1-etienne.carriere@foss.st.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-09 14:21:51 +01:00
Luke Parkin
bd02b0737f firmware: arm_scmi: Add support to reset the debug metrics
It is sometimes useful to reset all these SCMI communication debug
metrics especially when we are interested in analysing these metrics
during a particular workload or for a fixed time duration. Let us
add the capability to reset all these metrics as once so that they
can be counted during the period of interest.

Signed-off-by: Luke Parkin <luke.parkin@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240805131013.587016-6-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-09 14:21:43 +01:00
Luke Parkin
f6a905eaf6 firmware: arm_scmi: Create debugfs files for SCMI communication debug metrics
Now that the basic support to collect the SCMI communication debug
metrics is in place, let us create debugfs files for the same so
that they are accessible to the users/debuggers.

Signed-off-by: Luke Parkin <luke.parkin@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240805131013.587016-5-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-09 14:21:35 +01:00
Luke Parkin
0b3d48c472 firmware: arm_scmi: Track basic SCMI communication debug metrics
Add the support for counting some of the SCMI communication debug metrics
like how many were sent successfully or with some errors, responses
received, notifications and delayed responses, transfer timeouts and
errors from the firmware/platform.

In many cases, the traces exists. But the traces are not always necessarily
enabled and getting such cumulative SCMI communication debug metrics helps
in understanding if there are any possible improvements that can be made
on either side of SCMI communication.

Signed-off-by: Luke Parkin <luke.parkin@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240805131013.587016-4-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-09 14:21:26 +01:00
Luke Parkin
1b18d4295f firmware: arm_scmi: Add support for debug metrics at the interface
Since SCMI involves interaction with the entity(software, firmware and/or
hardware) providing services or features, it is quite useful to track
certain metrics(for pure debugging purposes) like how many messages were
sent or received, were there any failures, what kind of failures, ..etc.

Add a new optional config option for the above purpose and the initial
support for counting such key debug metrics.

Signed-off-by: Luke Parkin <luke.parkin@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240805131013.587016-3-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-09 14:21:11 +01:00
Luke Parkin
20c9234d62 firmware: arm_scmi: Remove superfluous handle_to_scmi_info
Variable info is already defined in the outer code block and there is no
need to define the same again in the inner code block. Let us just remove
that duplicate definition of the variable info. No functional change.

Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Luke Parkin <luke.parkin@arm.com>
Message-Id: <20240805131013.587016-2-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-08-09 14:20:40 +01:00
Linus Torvalds
c2a96b7f18 Driver core changes for 6.11-rc1
Here is the big set of driver core changes for 6.11-rc1.
 
 Lots of stuff in here, with not a huge diffstat, but apis are evolving
 which required lots of files to be touched.  Highlights of the changes
 in here are:
   - platform remove callback api final fixups (Uwe took many releases to
     get here, finally!)
   - Rust bindings for basic firmware apis and initial driver-core
     interactions.  It's not all that useful for a "write a whole driver
     in rust" type of thing, but the firmware bindings do help out the
     phy rust drivers, and the driver core bindings give a solid base on
     which others can start their work.  There is still a long way to go
     here before we have a multitude of rust drivers being added, but
     it's a great first step.
   - driver core const api changes.  This reached across all bus types,
     and there are some fix-ups for some not-common bus types that
     linux-next and 0-day testing shook out.  This work is being done to
     help make the rust bindings more safe, as well as the C code, moving
     toward the end-goal of allowing us to put driver structures into
     read-only memory.  We aren't there yet, but are getting closer.
   - minor devres cleanups and fixes found by code inspection
   - arch_topology minor changes
   - other minor driver core cleanups
 
 All of these have been in linux-next for a very long time with no
 reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the big set of driver core changes for 6.11-rc1.

  Lots of stuff in here, with not a huge diffstat, but apis are evolving
  which required lots of files to be touched. Highlights of the changes
  in here are:

   - platform remove callback api final fixups (Uwe took many releases
     to get here, finally!)

   - Rust bindings for basic firmware apis and initial driver-core
     interactions.

     It's not all that useful for a "write a whole driver in rust" type
     of thing, but the firmware bindings do help out the phy rust
     drivers, and the driver core bindings give a solid base on which
     others can start their work.

     There is still a long way to go here before we have a multitude of
     rust drivers being added, but it's a great first step.

   - driver core const api changes.

     This reached across all bus types, and there are some fix-ups for
     some not-common bus types that linux-next and 0-day testing shook
     out.

     This work is being done to help make the rust bindings more safe,
     as well as the C code, moving toward the end-goal of allowing us to
     put driver structures into read-only memory. We aren't there yet,
     but are getting closer.

   - minor devres cleanups and fixes found by code inspection

   - arch_topology minor changes

   - other minor driver core cleanups

  All of these have been in linux-next for a very long time with no
  reported problems"

* tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits)
  ARM: sa1100: make match function take a const pointer
  sysfs/cpu: Make crash_hotplug attribute world-readable
  dio: Have dio_bus_match() callback take a const *
  zorro: make match function take a const pointer
  driver core: module: make module_[add|remove]_driver take a const *
  driver core: make driver_find_device() take a const *
  driver core: make driver_[create|remove]_file take a const *
  firmware_loader: fix soundness issue in `request_internal`
  firmware_loader: annotate doctests as `no_run`
  devres: Correct code style for functions that return a pointer type
  devres: Initialize an uninitialized struct member
  devres: Fix memory leakage caused by driver API devm_free_percpu()
  devres: Fix devm_krealloc() wasting memory
  driver core: platform: Switch to use kmemdup_array()
  driver core: have match() callback in struct bus_type take a const *
  MAINTAINERS: add Rust device abstractions to DRIVER CORE
  device: rust: improve safety comments
  MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer
  MAINTAINERS: add Rust FW abstractions to FIRMWARE LOADER
  firmware: rust: improve safety comments
  ...
2024-07-25 10:42:22 -07:00
Linus Torvalds
f4f92db439 virtio: features, fixes, cleanups
Several new features here:
 
 - Virtio find vqs API has been reworked
   (required to fix the scalability issue we have with
    adminq, which I hope to merge later in the cycle)
 
 - vDPA driver for Marvell OCTEON
 
 - virtio fs performance improvement
 
 - mlx5 migration speedups
 
 Fixes, cleanups all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "Several new features here:

   - Virtio find vqs API has been reworked (required to fix the
     scalability issue we have with adminq, which I hope to merge later
     in the cycle)

   - vDPA driver for Marvell OCTEON

   - virtio fs performance improvement

   - mlx5 migration speedups

  Fixes, cleanups all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (56 commits)
  virtio: rename virtio_find_vqs_info() to virtio_find_vqs()
  virtio: remove unused virtio_find_vqs() and virtio_find_vqs_ctx() helpers
  virtio: convert the rest virtio_find_vqs() users to virtio_find_vqs_info()
  virtio_balloon: convert to use virtio_find_vqs_info()
  virtiofs: convert to use virtio_find_vqs_info()
  scsi: virtio_scsi: convert to use virtio_find_vqs_info()
  virtio_net: convert to use virtio_find_vqs_info()
  virtio_crypto: convert to use virtio_find_vqs_info()
  virtio_console: convert to use virtio_find_vqs_info()
  virtio_blk: convert to use virtio_find_vqs_info()
  virtio: rename find_vqs_info() op to find_vqs()
  virtio: remove the original find_vqs() op
  virtio: call virtio_find_vqs_info() from virtio_find_single_vq() directly
  virtio: convert find_vqs() op implementations to find_vqs_info()
  virtio_pci: convert vp_*find_vqs() ops to find_vqs_info()
  virtio: introduce virtio_queue_info struct and find_vqs_info() config op
  virtio: make virtio_find_single_vq() call virtio_find_vqs()
  virtio: make virtio_find_vqs() call virtio_find_vqs_ctx()
  caif_virtio: use virtio_find_single_vq() for single virtqueue finding
  vdpa/mlx5: Don't enable non-active VQs in .set_vq_ready()
  ...
2024-07-19 11:57:55 -07:00
Jiri Pirko
6c85d6b653 virtio: rename virtio_find_vqs_info() to virtio_find_vqs()
Since the original virtio_find_vqs() is no longer present, rename
virtio_find_vqs_info() back to virtio_find_vqs().

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Message-Id: <20240708074814.1739223-20-jiri@resnulli.us>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-07-17 05:20:58 -04:00
Jiri Pirko
c95e67bac4 virtio: convert the rest virtio_find_vqs() users to virtio_find_vqs_info()
Instead of passing separate names and callbacks arrays
to virtio_find_vqs(), have one of virtual_queue_info structs and
pass it to virtio_find_vqs_info().

Suggested-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Message-Id: <20240708074814.1739223-18-jiri@resnulli.us>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-07-17 05:20:58 -04:00
Greg Kroah-Hartman
d69d804845 driver core: have match() callback in struct bus_type take a const *
In the match() callback, the struct device_driver * should not be
changed, so change the function callback to be a const *.  This is one
step of many towards making the driver core safe to have struct
device_driver in read-only memory.

Because the match() callback is in all busses, all busses are modified
to handle this properly.  This does entail switching some container_of()
calls to container_of_const() to properly handle the constant *.

For some busses, like PCI and USB and HV, the const * is cast away in
the match callback as those busses do want to modify those structures at
this point in time (they have a local lock in the driver structure.)
That will have to be changed in the future if they wish to have their
struct device * in read-only-memory.

Cc: Rafael J. Wysocki <rafael@kernel.org>
Reviewed-by: Alex Elder <elder@kernel.org>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lore.kernel.org/r/2024070136-wrongdoer-busily-01e8@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-07-03 15:16:54 +02:00
Peng Fan
fa8b28ba22 firmware: arm_scmi: Add support for platform to agent channel completion
On some systems the SCMI platform to agent(p2a) communication can be fully
interrupt driven. The notification(p2a) channel needs completion interrupt
to drive its notification queue at the platform. Without it, the platform
notification will not work as the platform will wait for agent indication
of clearing the channel via interrupt unlike few platforms which can poll
instead.

To support such systems, an optional unidirectional mailbox channel for
p2a reply communication. If the platform sets channel INTR flag set
indicating that it expects the agent to trigger the interrupt to acknowledge
the reciept of the notification or any p2a message, and the completion
interrupt channel is provided, send a mailbox message to the platform
after the p2a message is read and channel is freed to accept new
notifications or p2a messages.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20240510-scmi-notify-v2-2-e994cf14ef86@nxp.com
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-06-14 12:14:19 +01:00
Peng Fan
dd22cc907a firmware: arm_scmi: Add support for system suspend in power control driver
SCMI supports system suspend notification from the platform. The suuport
for the same can be added in SCMI power control driver. However, currently
there is no way to pass suspend level to pm_suspend() call from this
driver, so use suspend-to-ram(S2R) will be used.

Couple of things to note:
1) The userspace can still configure whatever default behaviour expected
   for S2R.
2) The userspace needs to keep the wakeup source enabled, otherwise the
   system may never resume back.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240428075105.2187837-1-peng.fan@oss.nxp.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-06-14 09:48:35 +01:00
Linus Torvalds
2ef32ad224 virtio: features, fixes, cleanups
Several new features here:
 
 - virtio-net is finally supported in vduse.
 
 - Virtio (balloon and mem) interaction with suspend is improved
 
 - vhost-scsi now handles signals better/faster.
 
 Fixes, cleanups all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "Several new features here:

   - virtio-net is finally supported in vduse

   - virtio (balloon and mem) interaction with suspend is improved

   - vhost-scsi now handles signals better/faster

  And fixes, cleanups all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (48 commits)
  virtio-pci: Check if is_avq is NULL
  virtio: delete vq in vp_find_vqs_msix() when request_irq() fails
  MAINTAINERS: add Eugenio Pérez as reviewer
  vhost-vdpa: Remove usage of the deprecated ida_simple_xx() API
  vp_vdpa: don't allocate unused msix vectors
  sound: virtio: drop owner assignment
  fuse: virtio: drop owner assignment
  scsi: virtio: drop owner assignment
  rpmsg: virtio: drop owner assignment
  nvdimm: virtio_pmem: drop owner assignment
  wifi: mac80211_hwsim: drop owner assignment
  vsock/virtio: drop owner assignment
  net: 9p: virtio: drop owner assignment
  net: virtio: drop owner assignment
  net: caif: virtio: drop owner assignment
  misc: nsm: drop owner assignment
  iommu: virtio: drop owner assignment
  drm/virtio: drop owner assignment
  gpio: virtio: drop owner assignment
  firmware: arm_scmi: virtio: drop owner assignment
  ...
2024-05-23 12:04:36 -07:00
Krzysztof Kozlowski
cfffb29c48 firmware: arm_scmi: virtio: drop owner assignment
virtio core already sets the .owner, so driver does not need to.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Message-Id: <20240331-module-owner-virtio-v2-11-98f04bfaf46a@linaro.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
2024-05-22 08:31:17 -04:00
Linus Torvalds
14a60290ed soc: drivers for 6.10
As usual, these are updates for drivers that are specific to certain
 SoCs or firmware running on them. Notable updates include
 
  - The new STMicroelectronics STM32 "firewall" bus driver that is
    used to provide a barrier between different parts of an SoC
 
  - Lots of updates for the Qualcomm platform drivers, in particular
    SCM, which gets a rewrite of its initialization code
 
  - Firmware driver updates for Arm FF-A notification interrupts
    and indirect messaging, SCMI firmware support for pin control
    and vendor specific interfaces, and TEE firmware interface
    changes across multiple TEE drivers
 
  - A larger cleanup of the Mediatek CMDQ driver and some related bits
 
  - Kconfig changes for riscv drivers to prepare for adding Kanaan
    k230 support
 
  - Multiple minor updates for the TI sysc bus driver, memory controllers,
    hisilicon hccs and more
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Merge tag 'soc-drivers-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC driver updates from Arnd Bergmann:
 "As usual, these are updates for drivers that are specific to certain
  SoCs or firmware running on them.

  Notable updates include

   - The new STMicroelectronics STM32 "firewall" bus driver that is used
     to provide a barrier between different parts of an SoC

   - Lots of updates for the Qualcomm platform drivers, in particular
     SCM, which gets a rewrite of its initialization code

   - Firmware driver updates for Arm FF-A notification interrupts and
     indirect messaging, SCMI firmware support for pin control and
     vendor specific interfaces, and TEE firmware interface changes
     across multiple TEE drivers

   - A larger cleanup of the Mediatek CMDQ driver and some related bits

   - Kconfig changes for riscv drivers to prepare for adding Kanaan k230
     support

   - Multiple minor updates for the TI sysc bus driver, memory
     controllers, hisilicon hccs and more"

* tag 'soc-drivers-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (103 commits)
  firmware: qcom: uefisecapp: Allow on sc8180x Primus and Flex 5G
  soc: qcom: pmic_glink: Make client-lock non-sleeping
  dt-bindings: soc: qcom,wcnss: fix bluetooth address example
  soc/tegra: pmc: Add EQOS wake event for Tegra194 and Tegra234
  bus: stm32_firewall: fix off by one in stm32_firewall_get_firewall()
  bus: etzpc: introduce ETZPC firewall controller driver
  firmware: arm_ffa: Avoid queuing work when running on the worker queue
  bus: ti-sysc: Drop legacy idle quirk handling
  bus: ti-sysc: Drop legacy quirk handling for smartreflex
  bus: ti-sysc: Drop legacy quirk handling for uarts
  bus: ti-sysc: Add a description and copyrights
  bus: ti-sysc: Move check for no-reset-on-init
  soc: hisilicon: kunpeng_hccs: replace MAILBOX dependency with PCC
  soc: hisilicon: kunpeng_hccs: Add the check for obtaining complete port attribute
  firmware: arm_ffa: Fix memory corruption in ffa_msg_send2()
  bus: rifsc: introduce RIFSC firewall controller driver
  of: property: fw_devlink: Add support for "access-controller"
  soc: mediatek: mtk-socinfo: Correct the marketing name for MT8188GV
  soc: mediatek: mtk-socinfo: Add entry for MT8395AV/ZA Genio 1200
  soc: mediatek: mtk-mutex: Add support for MT8188 VPPSYS
  ...
2024-05-13 08:48:42 -07:00
Peng Fan
2145af01b9 firmware: arm_scmi: Add basic support for SCMI v3.2 pincontrol protocol
Add basic implementation of the SCMI v3.2 pincontrol protocol.

Co-developed-by: Oleksii Moisieiev <oleksii_moisieiev@epam.com>
Signed-off-by: Oleksii Moisieiev <oleksii_moisieiev@epam.com>
Co-developed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20240418-pinctrl-scmi-v11-3-499dca9864a7@nxp.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-04-19 15:17:37 +01:00
Peng Fan
4869b5cc96 firmware: arm_scmi: Introduce get_max_msg_size() helper/accessor
When the agent is sending data to the SCMI platform, the drivers in the
agent could check the maximum message size supported to avoid potential
protocol buffer overflow.

Introduce the helper/accessor function get_max_msg_size() for the same.

Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20240418-pinctrl-scmi-v11-1-499dca9864a7@nxp.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-04-19 15:17:37 +01:00
Cristian Marussi
fc110108b9 firmware: arm_scmi: Add support for multiple vendors custom protocols
Add a mechanism to be able to tag vendor protocol modules at compile-time
with a vendor/sub_vendor string and an implementation version and then to
choose to load, at run-time, only those vendor protocol modules matching
as close as possible the vendor/subvendor identification advertised by
the SCMI platform server.

In this way, any in-tree existent vendor protocol module can be build and
shipped by default in a single kernel image, even when using the same
clashing protocol identification numbers, since the SCMI core will take
care at run-time to load only the ones pertinent to the running system.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240418095121.3238820-2-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-04-18 10:59:22 +01:00
Arnd Bergmann
495667d49c firmware: arm_scmi: Avoid non-constant printk format strings
A recent rework changed the constant format strings to a local variable,
which causes warnings from clang when -Wformat-security is enabled:

drivers/firmware/arm_scmi/driver.c: In function 'scmi_probe':
drivers/firmware/arm_scmi/driver.c:2936:25: error: format not a string literal and no format arguments [-Werror=format-security]
 2936 |                         dev_err(dev, err_str);
      |                         ^~~~~~~
drivers/firmware/arm_scmi/driver.c:2993:9: error: format not a string literal and no format arguments [-Werror=format-security]
 2993 |         return dev_err_probe(dev, ret, err_str);

Print these using an explicit "%s" string instead.

Fixes: 3a7d93d1f7 ("firmware: arm_scmi: Use dev_err_probe to bail out")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240403111040.3924658-1-arnd@kernel.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-04-04 14:44:57 +01:00
Cristian Marussi
3a7d93d1f7 firmware: arm_scmi: Use dev_err_probe to bail out
Improve the error logging in the driver probe failure paths.
Also use dev_err_probe which is probe error check and log helper to
prevent logging in case of probe deferral.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240325204620.1437237-6-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-03-26 12:06:48 +00:00
Cristian Marussi
264a2c5206 firmware: arm_scmi: Simplify scmi_devm_notifier_unregister
Unregistering SCMI notifications using the managed devres interface can be
done providing as a reference simply the previously successfully registered
notification block since it could have been registered only on one kernel
notification_chain: drop any reference to SCMI protocol, events and
sources.

Devres internal helpers can search for the provided notification block
reference and, once found, the associated devres object will already
provide the above SCMI references for the event.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240325204620.1437237-5-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-03-26 11:33:33 +00:00
Cristian Marussi
5076ab66db firmware: arm_scmi: Add message dump traces for bad and unexpected replies
It is useful to have message dump traces for any invalid/bad/unexpected
replies. Let us add traces for the same as well as late-timed-out,
out-of-order and unexpected/spurious messages.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240325204620.1437237-4-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-03-26 11:32:01 +00:00
Cristian Marussi
5dc0e0b1f0 firmware: arm_scmi: Add helper to trace bad messages
Upon reception of malformed and unexpected timed-out SCMI messages, it is
not possible to trace those bad messages in their entirety, because usually
we cannot even retrieve the payload, or it is just not reliable.

Add a helper to trace at least the content of the header of the received
message while associating a meaningful tag and error code.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240325204620.1437237-3-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-03-26 11:19:38 +00:00
Peng Fan
42a31d4410 firmware: arm_scmi: Log the perf domain names in the error paths
Currently, the performance domain names are not logged whenever any
error occurs when processing the OPPs by adding to local data structures
or to the OPP library.

It would be easier to locate the problem if domain name is printed out.
So let us add the performance domain names to the other information
logged already in the error paths.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20240322080531.3365016-1-peng.fan@oss.nxp.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-03-26 11:15:55 +00:00
Cristian Marussi
b70c7996d4 firmware: arm_scmi: Make raw debugfs entries non-seekable
SCMI raw debugfs entries are used to inject and snoop messages out of the
SCMI core and, as such, the underlying virtual files have no reason to
support seeking.

Modify the related file_operations descriptors to be non-seekable.

Fixes: 3c3d818a93 ("firmware: arm_scmi: Add core raw transmission support")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240315140324.231830-1-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-03-25 10:14:28 +00:00
Pierre Gondois
17f243adf1 firmware: arm_scmi: Fix wrong fastchannel initialization
Fastchannels are initialized with an incorrect index(POWERCAP_PAI_GET) in:
commit 2441caa84a ("firmware: arm_scmi: Populate fast channel rate_limit")

Fix this and provide a correct index(POWERCAP_FC_PAI)

Fixes: 2441caa84a ("firmware: arm_scmi: Populate fast channel rate_limit")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202403100744.7Op3PI8L-lkp@intel.com/
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Link: https://lore.kernel.org/r/20240311090413.1710725-1-pierre.gondois@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-03-25 10:14:28 +00:00
Rafael J. Wysocki
11703c7611 ARM cpufreq updates for 6.9
- zero initialize a cpumask (Marek Szyprowski).
 - Boost support for scmi cpufreq driver (Sibi Sankar).
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Merge tag 'cpufreq-arm-updates-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

Merge more ARM cpufreq updates for 6.9 from Viresh Kumar:

"- zero initialize a cpumask (Marek Szyprowski).
 - Boost support for scmi cpufreq driver (Sibi Sankar)."

* tag 'cpufreq-arm-updates-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  cpufreq: scmi: Enable boost support
  firmware: arm_scmi: Add support for marking certain frequencies as turbo
  cpufreq: dt: always allocate zeroed cpumask
2024-03-15 13:12:26 +01:00
Sibi Sankar
a897575e79 firmware: arm_scmi: Add support for marking certain frequencies as turbo
All opps above the sustained frequency are treated as turbo, so mark them
accordingly.

Suggested-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2024-03-15 11:19:26 +05:30