Commit Graph

2915 Commits

Author SHA1 Message Date
Alexandre Ghiti
e8a62cc26d
riscv: Implement sv48 support
By adding a new 4th level of page table, give the possibility to 64bit
kernel to address 2^48 bytes of virtual address: in practice, that offers
128TB of virtual address space to userspace and allows up to 64TB of
physical memory.

If the underlying hardware does not support sv48, we will automatically
fallback to a standard 3-level page table by folding the new PUD level into
PGDIR level. In order to detect HW capabilities at runtime, we
use SATP feature that ignores writes with an unsupported mode.

Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-01-19 17:54:09 -08:00
Linus Torvalds
3bf6a9e36e virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes
partial support for < MAX_ORDER - 1 granularity for virtio-mem
 driver_override for vdpa
 sysfs ABI documentation for vdpa
 multiqueue config support for mlx5 vdpa
 
 Misc fixes, cleanups.
 
 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:
 "virtio,vdpa,qemu_fw_cfg: features, cleanups, and fixes.

   - partial support for < MAX_ORDER - 1 granularity for virtio-mem

   - driver_override for vdpa

   - sysfs ABI documentation for vdpa

   - multiqueue config support for mlx5 vdpa

   - and misc fixes, cleanups"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (42 commits)
  vdpa/mlx5: Fix tracking of current number of VQs
  vdpa/mlx5: Fix is_index_valid() to refer to features
  vdpa: Protect vdpa reset with cf_mutex
  vdpa: Avoid taking cf_mutex lock on get status
  vdpa/vdpa_sim_net: Report max device capabilities
  vdpa: Use BIT_ULL for bit operations
  vdpa/vdpa_sim: Configure max supported virtqueues
  vdpa/mlx5: Report max device capabilities
  vdpa: Support reporting max device capabilities
  vdpa/mlx5: Restore cur_num_vqs in case of failure in change_num_qps()
  vdpa: Add support for returning device configuration information
  vdpa/mlx5: Support configuring max data virtqueue
  vdpa/mlx5: Fix config_attr_mask assignment
  vdpa: Allow to configure max data virtqueues
  vdpa: Read device configuration only if FEATURES_OK
  vdpa: Sync calls set/get config/status with cf_mutex
  vdpa/mlx5: Distribute RX virtqueues in RQT object
  vdpa: Provide interface to read driver features
  vdpa: clean up get_config_size ret value handling
  virtio_ring: mark ring unused on error
  ...
2022-01-18 10:05:48 +02:00
Johan Hovold
9f8b4ae2ac firmware: qemu_fw_cfg: remove sysfs entries explicitly
Explicitly remove the file entries from sysfs before dropping the final
reference for symmetry reasons and for consistency with the rest of the
driver.

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-5-johan@kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-01-14 18:50:52 -05:00
Johan Hovold
1b656e9aad firmware: qemu_fw_cfg: fix sysfs information leak
Make sure to always NUL-terminate file names retrieved from the firmware
to avoid accessing data beyond the entry slab buffer and exposing it
through sysfs in case the firmware data is corrupt.

Fixes: 75f3e8e47f ("firmware: introduce sysfs driver for QEMU's fw_cfg device")
Cc: stable@vger.kernel.org      # 4.6
Cc: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-4-johan@kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-01-14 18:50:52 -05:00
Johan Hovold
6004e351da firmware: qemu_fw_cfg: fix kobject leak in probe error path
An initialised kobject must be freed using kobject_put() to avoid
leaking associated resources (e.g. the object name).

Commit fe3c606843 ("firmware: Fix a reference count leak.") "fixed"
the leak in the first error path of the file registration helper but
left the second one unchanged. This "fix" would however result in a NULL
pointer dereference due to the release function also removing the never
added entry from the fw_cfg_entry_cache list. This has now been
addressed.

Fix the remaining kobject leak by restoring the common error path and
adding the missing kobject_put().

Fixes: 75f3e8e47f ("firmware: introduce sysfs driver for QEMU's fw_cfg device")
Cc: stable@vger.kernel.org      # 4.6
Cc: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-3-johan@kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-01-14 18:50:52 -05:00
Johan Hovold
d3e305592d firmware: qemu_fw_cfg: fix NULL-pointer deref on duplicate entries
Commit fe3c606843 ("firmware: Fix a reference count leak.") "fixed"
a kobject leak in the file registration helper by properly calling
kobject_put() for the entry in case registration of the object fails
(e.g. due to a name collision).

This would however result in a NULL pointer dereference when the
release function tries to remove the never added entry from the
fw_cfg_entry_cache list.

Fix this by moving the list-removal out of the release function.

Note that the offending commit was one of the benign looking umn.edu
fixes which was reviewed but not reverted. [1][2]

[1] https://lore.kernel.org/r/202105051005.49BFABCE@keescook
[2] https://lore.kernel.org/all/YIg7ZOZvS3a8LjSv@kroah.com

Fixes: fe3c606843 ("firmware: Fix a reference count leak.")
Cc: stable@vger.kernel.org      # 5.8
Cc: Qiushi Wu <wu000273@umn.edu>
Cc: Kees Cook <keescook@chromium.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-2-johan@kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-01-14 18:50:52 -05:00
Michael S. Tsirkin
d9679d0013 virtio: wrap config->reset calls
This will enable cleanups down the road.
The idea is to disable cbs, then add "flush_queued_cbs" callback
as a parameter, this way drivers can flush any work
queued after callbacks have been disabled.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20211013105226.20225-1-mst@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-01-14 18:50:52 -05:00
Linus Torvalds
3bad80dab9 Char/Misc and other driver changes for 5.17-rc1
Here is the large set of char, misc, and other "small" driver subsystem
 changes for 5.17-rc1.
 
 Lots of different things are in here for char/misc drivers such as:
 	- habanalabs driver updates
 	- mei driver updates
 	- lkdtm driver updates
 	- vmw_vmci driver updates
 	- android binder driver updates
 	- other small char/misc driver updates
 
 Also smaller driver subsystems have also been updated, including:
 	- fpga subsystem updates
 	- iio subsystem updates
 	- soundwire subsystem updates
 	- extcon subsystem updates
 	- gnss subsystem updates
 	- phy subsystem updates
 	- coresight subsystem updates
 	- firmware subsystem updates
 	- comedi subsystem updates
 	- mhi subsystem updates
 	- speakup subsystem updates
 	- rapidio subsystem updates
 	- spmi subsystem updates
 	- virtual driver updates
 	- counter subsystem updates
 
 Too many individual changes to summarize, the shortlog contains the full
 details.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the large set of char, misc, and other "small" driver
  subsystem changes for 5.17-rc1.

  Lots of different things are in here for char/misc drivers such as:

   - habanalabs driver updates

   - mei driver updates

   - lkdtm driver updates

   - vmw_vmci driver updates

   - android binder driver updates

   - other small char/misc driver updates

  Also smaller driver subsystems have also been updated, including:

   - fpga subsystem updates

   - iio subsystem updates

   - soundwire subsystem updates

   - extcon subsystem updates

   - gnss subsystem updates

   - phy subsystem updates

   - coresight subsystem updates

   - firmware subsystem updates

   - comedi subsystem updates

   - mhi subsystem updates

   - speakup subsystem updates

   - rapidio subsystem updates

   - spmi subsystem updates

   - virtual driver updates

   - counter subsystem updates

  Too many individual changes to summarize, the shortlog contains the
  full details.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (406 commits)
  counter: 104-quad-8: Fix use-after-free by quad8_irq_handler
  dt-bindings: mux: Document mux-states property
  dt-bindings: ti-serdes-mux: Add defines for J721S2 SoC
  counter: remove old and now unused registration API
  counter: ti-eqep: Convert to new counter registration
  counter: stm32-lptimer-cnt: Convert to new counter registration
  counter: stm32-timer-cnt: Convert to new counter registration
  counter: microchip-tcb-capture: Convert to new counter registration
  counter: ftm-quaddec: Convert to new counter registration
  counter: intel-qep: Convert to new counter registration
  counter: interrupt-cnt: Convert to new counter registration
  counter: 104-quad-8: Convert to new counter registration
  counter: Update documentation for new counter registration functions
  counter: Provide alternative counter registration functions
  counter: stm32-timer-cnt: Convert to counter_priv() wrapper
  counter: stm32-lptimer-cnt: Convert to counter_priv() wrapper
  counter: ti-eqep: Convert to counter_priv() wrapper
  counter: ftm-quaddec: Convert to counter_priv() wrapper
  counter: intel-qep: Convert to counter_priv() wrapper
  counter: microchip-tcb-capture: Convert to counter_priv() wrapper
  ...
2022-01-14 16:02:28 +01:00
Linus Torvalds
3ceff4ea07 sound updates for 5.17-rc1
It's a relatively calm development cycle, but still lots of updates in
 the driver side like Intel SOF.  Below are some highlights:
 
 * ALSA / ASoC core:
 - A new kselftest for ALSA control API
 - PCM NO_REWINDS support
 - Potential race fixes around control removals
 - Unify x86 SG-buffer memory allocation code
 - Cleanups and race fixes for ASoC DPCM locking
 
 * ASoC:
 - Refinements and cleanups around the delay() APIs
 - Wider use of dev_err_probe().
 - Continuing cleanups and improvements to the SOF code
 - Support for pin switches in simple-card derived cards
 - Support for AMD Renoir ACP, Asahi Kasei Microdevices AKM4375, Intel
   systems using NAU8825 and MAX98390, Mediatek MT8915, nVidia Tegra20
   S/PDIF, Qualcomm systems using ALC5682I-VS and Texas Instruments
   TLV320ADC3xxx
 
 * HD-audio / USB-audio:
 - Fix deadlock at HD-audio codec unbinding
 - Fixes for Tegra194 HD-audio, new HDA support for CS35L41 codec
 - Quirks for Lenovo and HP machines, Gigabyte mobo, Bose device
 
 * Misc:
 - Fix virmidi drain behavior
 
 Note that the merge of CS35L41 codec support is still half-baked, and
 at least one ACPI change is missing.  Although this won't hinder the
 kernel build itself, we're going to catch up before RC1.
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Merge tag 'sound-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "It's a relatively calm development cycle, but still lots of updates in
  the driver side like Intel SOF. Below are some highlights:

  ALSA / ASoC core:
   - A new kselftest for ALSA control API
   - PCM NO_REWINDS support
   - Potential race fixes around control removals
   - Unify x86 SG-buffer memory allocation code
   - Cleanups and race fixes for ASoC DPCM locking

  ASoC:
   - Refinements and cleanups around the delay() APIs
   - Wider use of dev_err_probe().
   - Continuing cleanups and improvements to the SOF code
   - Support for pin switches in simple-card derived cards
   - Support for AMD Renoir ACP, Asahi Kasei Microdevices AKM4375, Intel
     systems using NAU8825 and MAX98390, Mediatek MT8915, nVidia Tegra20
     S/PDIF, Qualcomm systems using ALC5682I-VS and Texas Instruments
     TLV320ADC3xxx

  HD-audio / USB-audio:
   - Fix deadlock at HD-audio codec unbinding
   - Fixes for Tegra194 HD-audio, new HDA support for CS35L41 codec
   - Quirks for Lenovo and HP machines, Gigabyte mobo, Bose device

  Misc:
   - Fix virmidi drain behavior

  Note that the merge of CS35L41 codec support is still half-baked, and
  at least one ACPI change is missing. Although this won't hinder the
  kernel build itself, we're going to catch up before RC1"

* tag 'sound-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (415 commits)
  ALSA: hda: intel-dsp-config: reorder the config table
  ALSA: hda: intel-dsp-config: add JasperLake support
  ALSA: hda: cs35l41: fix double free on error in probe()
  ALSA: hda: Fix dependencies of CS35L41 on SPI/I2C buses
  ALSA: hda: Fix dependency on ASoC cs35l41 codec
  ASoC: cs35l41: Add support for hibernate memory retention mode
  ASoC: cs35l41: Update handling of test key registers
  ALSA: intel_hdmi: Check for error num after setting mask
  ASoC: wcd9335: Keep a RX port value for each SLIM RX mux
  ASoC: amd: acp: acp-mach: Change default RT1019 amp dev id
  ALSA: virmidi: Remove duplicated code
  ALSA: seq: virmidi: Add a drain operation
  ASoC: topology: Fix typo
  ASoC: fsl_asrc: refine the check of available clock divider
  ASoC: Intel: bytcr_rt5640: Add support for external GPIO jack-detect
  ASoC: Intel: bytcr_rt5640: Support retrieving the codec IRQ from the AMCR0F28 ACPI dev
  ASoC: rt5640: Add support for boards with an external jack-detect GPIO
  ASoC: rt5640: Allow snd_soc_component_set_jack() to override the codec IRQ
  ASoC: rt5640: Change jack_work to a delayed_work
  ASoC: rt5640: Fix possible NULL pointer deref on resume
  ...
2022-01-14 14:55:38 +01:00
Linus Torvalds
4eb766f64d Devicetree updates for v5.17:
Bindings:
 - DT schema conversions for Samsung clocks, RNG bindings, Qcom Command
   DB and rmtfs, gpio-restart, i2c-mux-gpio, i2c-mux-pinctl, Tegra I2C
   and BPMP, pwm-vibrator, Arm DSU, and Cadence macb
 
 - DT schema conversions for Broadcom platforms: interrupt controllers,
   STB GPIO, STB waketimer, STB reset, iProc MDIO mux, iProc PCIe,
   Cygnus PCIe PHY, PWM, USB BDC, BCM6328 LEDs, TMON, SYSTEMPORT, AMAC,
   Northstar 2 PCIe PHY, GENET, moca PHY, GISB arbiter, and SATA
 
 - Add binding schemas for Tegra210 EMC table, TI DC-DC converters,
 
 - Clean-ups of MDIO bus schemas to fix 'unevaluatedProperties' issues
 
 - More fixes due to 'unevaluatedProperties' enabling
 
 - Data type fixes and clean-ups of binding examples found in preparation
   to move to validating DTB files directly (instead of intermediate YAML
   representation.
 
 - Vendor prefixes for T-Head Semiconductor, OnePlus, and Sunplus
 
 - Add various new compatible strings
 
 DT core:
 - Silence a warning for overlapping reserved memory regions
 
 - Reimplement unittest overlay tracking
 
 - Fix stack frame size warning in unittest
 
 - Clean-ups of early FDT scanning functions
 
 - Fix handling of "linux,usable-memory-range" on EFI booted systems
 
 - Add support for 'fail' status on CPU nodes
 
 - Improve error message in of_phandle_iterator_next()
 
 - kbuild: Disable duplicate unit-address warnings for disabled nodes
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Merge tag 'devicetree-for-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:
 "Bindings:

   - DT schema conversions for Samsung clocks, RNG bindings, Qcom
     Command DB and rmtfs, gpio-restart, i2c-mux-gpio, i2c-mux-pinctl,
     Tegra I2C and BPMP, pwm-vibrator, Arm DSU, and Cadence macb

   - DT schema conversions for Broadcom platforms: interrupt
     controllers, STB GPIO, STB waketimer, STB reset, iProc MDIO mux,
     iProc PCIe, Cygnus PCIe PHY, PWM, USB BDC, BCM6328 LEDs, TMON,
     SYSTEMPORT, AMAC, Northstar 2 PCIe PHY, GENET, moca PHY, GISB
     arbiter, and SATA

   - Add binding schemas for Tegra210 EMC table, TI DC-DC converters,

   - Clean-ups of MDIO bus schemas to fix 'unevaluatedProperties' issues

   - More fixes due to 'unevaluatedProperties' enabling

   - Data type fixes and clean-ups of binding examples found in
     preparation to move to validating DTB files directly (instead of
     intermediate YAML representation.

   - Vendor prefixes for T-Head Semiconductor, OnePlus, and Sunplus

   - Add various new compatible strings

  DT core:

   - Silence a warning for overlapping reserved memory regions

   - Reimplement unittest overlay tracking

   - Fix stack frame size warning in unittest

   - Clean-ups of early FDT scanning functions

   - Fix handling of "linux,usable-memory-range" on EFI booted systems

   - Add support for 'fail' status on CPU nodes

   - Improve error message in of_phandle_iterator_next()

   - kbuild: Disable duplicate unit-address warnings for disabled nodes"

* tag 'devicetree-for-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (114 commits)
  dt-bindings: net: mdio: Drop resets/reset-names child properties
  dt-bindings: clock: samsung: convert S5Pv210 to dtschema
  dt-bindings: clock: samsung: convert Exynos5410 to dtschema
  dt-bindings: clock: samsung: convert Exynos5260 to dtschema
  dt-bindings: clock: samsung: extend Exynos7 bindings with UFS
  dt-bindings: clock: samsung: convert Exynos7 to dtschema
  dt-bindings: clock: samsung: convert Exynos5433 to dtschema
  dt-bindings: i2c: maxim,max96712: Add bindings for Maxim Integrated MAX96712
  dt-bindings: iio: adi,ltc2983: Fix 64-bit property sizes
  dt-bindings: power: maxim,max17040: Fix incorrect type for 'maxim,rcomp'
  dt-bindings: interrupt-controller: arm,gic-v3: Fix 'interrupts' cell size in example
  dt-bindings: iio/magnetometer: yamaha,yas530: Fix invalid 'interrupts' in example
  dt-bindings: clock: imx5: Drop clock consumer node from example
  dt-bindings: Drop required 'interrupt-parent'
  dt-bindings: net: ti,dp83869: Drop value on boolean 'ti,max-output-impedance'
  dt-bindings: net: wireless: mt76: Fix 8-bit property sizes
  dt-bindings: PCI: snps,dw-pcie-ep: Drop conflicting 'max-functions' schema
  dt-bindings: i2c: st,stm32-i2c: Make each example a separate entry
  dt-bindings: net: stm32-dwmac: Make each example a separate entry
  dt-bindings: net: Cleanup MDIO node schemas
  ...
2022-01-12 16:47:05 -08:00
Linus Torvalds
6dc69d3d0d driver core changes for 5.17-rc1
Here is the set of changes for the driver core for 5.17-rc1.
 
 Lots of little things here, including:
 	- kobj_type cleanups
 	- auxiliary_bus documentation updates
 	- auxiliary_device conversions for some drivers (relevant
 	  subsystems all have provided acks for these)
 	- kernfs lock contention reduction for some workloads
 	- other tiny cleanups and changes.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the set of changes for the driver core for 5.17-rc1.

  Lots of little things here, including:

   - kobj_type cleanups

   - auxiliary_bus documentation updates

   - auxiliary_device conversions for some drivers (relevant subsystems
     all have provided acks for these)

   - kernfs lock contention reduction for some workloads

   - other tiny cleanups and changes.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'driver-core-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (43 commits)
  kobject documentation: remove default_attrs information
  drivers/firmware: Add missing platform_device_put() in sysfb_create_simplefb
  debugfs: lockdown: Allow reading debugfs files that are not world readable
  driver core: Make bus notifiers in right order in really_probe()
  driver core: Move driver_sysfs_remove() after driver_sysfs_add()
  firmware: edd: remove empty default_attrs array
  firmware: dmi-sysfs: use default_groups in kobj_type
  qemu_fw_cfg: use default_groups in kobj_type
  firmware: memmap: use default_groups in kobj_type
  sh: sq: use default_groups in kobj_type
  headers/uninline: Uninline single-use function: kobject_has_children()
  devtmpfs: mount with noexec and nosuid
  driver core: Simplify async probe test code by using ktime_ms_delta()
  nilfs2: use default_groups in kobj_type
  kobject: remove kset from struct kset_uevent_ops callbacks
  driver core: make kobj_type constant.
  driver core: platform: document registration-failure requirement
  vdpa/mlx5: Use auxiliary_device driver data helpers
  net/mlx5e: Use auxiliary_device driver data helpers
  soundwire: intel: Use auxiliary_device driver data helpers
  ...
2022-01-12 11:11:34 -08:00
Linus Torvalds
f12fc75ef7 EFI updates for v5.17
- support taking the measurement of the initrd when loaded via the
   LoadFile2 protocol
 - kobject API cleanup from Greg
 - some header file whitespace fixes
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Merge tag 'efi-next-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI updates from Ard Biesheuvel:

 - support taking the measurement of the initrd when loaded via the
   LoadFile2 protocol

 - kobject API cleanup from Greg

 - some header file whitespace fixes

* tag 'efi-next-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi: use default_groups in kobj_type
  efi/libstub: measure loaded initrd info into the TPM
  efi/libstub: consolidate initrd handling across architectures
  efi/libstub: x86/mixed: increase supported argument count
  efi/libstub: add prototype of efi_tcg2_protocol::hash_log_extend_event()
  include/linux/efi.h: Remove unneeded whitespaces before tabs
2022-01-11 15:36:30 -08:00
Linus Torvalds
e85195d5bf ARM: SoC driver updates for v5.17
There are cleanups and minor bugfixes across several SoC specific
 drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone,
 Renesas, ZynqMP
 
 Noteworthy new features are:
 
  - The op-tee firmware driver gains support for asynchronous
    notifications from secure-world firmware.
 
  - Qualcomm platforms gain support for new SoC types in various
    drivers: power domain, cache controller, RPM sleep, soc-info
 
  - Samsung SoC drivers gain support for new SoCs in ChipID and PMU,
    as well as a new USIv2 driver that handles various types of
    serial communiction (uart, i2c, spi)
 
  - Renesas adds support for R-Car S4-8 (R8A779F0) in multiple
    drivers, as well as memory controller support for RZ/G2L
    (R9A07G044).
 
  - Apple M1 gains support for the PMGR power management driver
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Merge tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "There are cleanups and minor bugfixes across several SoC specific
  drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone,
  Renesas, ZynqMP

  Noteworthy new features are:

   - The op-tee firmware driver gains support for asynchronous
     notifications from secure-world firmware.

   - Qualcomm platforms gain support for new SoC types in various
     drivers: power domain, cache controller, RPM sleep, soc-info

   - Samsung SoC drivers gain support for new SoCs in ChipID and PMU, as
     well as a new USIv2 driver that handles various types of serial
     communiction (uart, i2c, spi)

   - Renesas adds support for R-Car S4-8 (R8A779F0) in multiple drivers,
     as well as memory controller support for RZ/G2L (R9A07G044).

   - Apple M1 gains support for the PMGR power management driver"

* tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (94 commits)
  soc: qcom: rpmh-rsc: Fix typo in a comment
  soc: qcom: socinfo: Add SM6350 and SM7225
  dt-bindings: arm: msm: Don't mark LLCC interrupt as required
  dt-bindings: firmware: scm: Add SM6350 compatible
  dt-bindings: arm: msm: Add LLCC for SM6350
  soc: qcom: rpmhpd: Sort power-domain definitions and lists
  soc: qcom: rpmhpd: Remove mx/cx relationship on sc7280
  soc: qcom: rpmhpd: Rename rpmhpd struct names
  soc: qcom: rpmhpd: sm8450: Add the missing .peer for sm8450_cx_ao
  soc: qcom: socinfo: add SM8450 ID
  soc: qcom: rpmhpd: Add SM8450 power domains
  dt-bindings: power: rpmpd: Add SM8450 to rpmpd binding
  soc: qcom: smem: Update max processor count
  dt-bindings: arm: qcom: Document SM8450 SoC and boards
  dt-bindings: firmware: scm: Add SM8450 compatible
  dt-bindings: arm: cpus: Add kryo780 compatible
  soc: qcom: rpmpd: Add support for sm6125
  dt-bindings: qcom-rpmpd: Add sm6125 power domains
  soc: qcom: aoss: constify static struct thermal_cooling_device_ops
  PM: AVS: qcom-cpr: Use div64_ul instead of do_div
  ...
2022-01-10 08:13:52 -08:00
Greg Kroah-Hartman
42f4046bc4 efi: use default_groups in kobj_type
There are currently 2 ways to create a set of sysfs files for a
kobj_type, through the default_attrs field, and the default_groups
field.  Move the firmware efi sysfs code to use default_groups
field which has been the preferred way since aa30f47cf6 ("kobject: Add
support for default attribute groups to kobj_type") so that we can soon
get rid of the obsolete default_attrs field.

Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: linux-efi@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-01-06 21:19:05 +01:00
Ilias Apalodimas
f046fff8bc efi/libstub: measure loaded initrd info into the TPM
In an effort to ensure the initrd observed and used by the OS is
the same one that was meant to be loaded, which is difficult to
guarantee otherwise, let's measure the initrd if the EFI stub and
specifically the newly introduced LOAD_FILE2 protocol was used.

Modify the initrd loading sequence so that the contents of the initrd
are measured into PCR9.  Note that the patch is currently using
EV_EVENT_TAG to create the eventlog entry instead of EV_IPL.  According
to the TCP PC Client specification this is used for PCRs defined for OS
and application usage.

Co-developed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://lore.kernel.org/r/20211119114745.1560453-5-ilias.apalodimas@linaro.org
[ardb: add braces to initializer of tagged_event_data]
Link: https://github.com/ClangBuiltLinux/linux/issues/1547
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-01-06 21:19:05 +01:00
Miaoqian Lin
0589e8889d drivers/firmware: Add missing platform_device_put() in sysfb_create_simplefb
Add the missing platform_device_put() before return from
sysfb_create_simplefb() in the error handling case.

Fixes: 8633ef82f1 ("drivers/firmware: consolidate EFI framebuffer setup for all arches")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20211231080431.15385-1-linmq006@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-06 15:47:45 +01:00
Greg Kroah-Hartman
3407d826c1 firmware: edd: remove empty default_attrs array
The default_attrs array of attributes for the edd sysfs entries is
totally empty for some reason, and a list of attributes is added later
after the object is created (which should be fixed up later as it's
racy).  Because this pointer is never used, and is empty, and we are
trying to remove all default_attrs usages, just delete it.

Link: https://lore.kernel.org/r/20220105182634.2802684-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-06 14:28:42 +01:00
Greg Kroah-Hartman
ab6d0f57be firmware: dmi-sysfs: use default_groups in kobj_type
There are currently 2 ways to create a set of sysfs files for a
kobj_type, through the default_attrs field, and the default_groups
field.  Move the firmware dmi-sysfs sysfs code to use default_groups
field which has been the preferred way since aa30f47cf6 ("kobject: Add
support for default attribute groups to kobj_type") so that we can soon
get rid of the obsolete default_attrs field.

Link: https://lore.kernel.org/r/20220105181719.2737782-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-06 14:28:22 +01:00
Greg Kroah-Hartman
ad8a5d1d2f qemu_fw_cfg: use default_groups in kobj_type
There are currently 2 ways to create a set of sysfs files for a
kobj_type, through the default_attrs field, and the default_groups
field.  Move the firmware qemu_fw_cfg sysfs code to use default_groups
field which has been the preferred way since aa30f47cf6 ("kobject: Add
support for default attribute groups to kobj_type") so that we can soon
get rid of the obsolete default_attrs field.

Cc: Gabriel Somlo <somlo@cmu.edu>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: qemu-devel@nongnu.org
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20220105183133.2812848-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-06 14:25:40 +01:00
Greg Kroah-Hartman
f54dfdf7c6 firmware: memmap: use default_groups in kobj_type
There are currently 2 ways to create a set of sysfs files for a
kobj_type, through the default_attrs field, and the default_groups
field.  Move the firmware memmap sysfs code to use default_groups field
which has been the preferred way since aa30f47cf6 ("kobject: Add
support for default attribute groups to kobj_type") so that we can soon
get rid of the obsolete default_attrs field.

Link: https://lore.kernel.org/r/20220105175650.2640758-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-05 19:17:29 +01:00
Charles Keepax
7aa1cc1091
firmware: cs_dsp: Clear core reset for cache
If the Halo registers are kept in the register cache the
HALO_CORE_RESET bit will be retained as 1 after reset is triggered in
cs_dsp_halo_start_core. This will cause subsequent writes to reset
the core which is not desired. Apart from this bit the rest of the
register bits are cacheable, so for safety sake clear the bit to
ensure the cache is consistent.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220105113026.18955-6-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-05 13:53:53 +00:00
Greg Kroah-Hartman
824adf37ee Merge 5.16-rc8 into char-misc-next
We need the fixes in here as well for testing.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-03 13:44:38 +01:00
Pingfan Liu
b398123bff efi: apply memblock cap after memblock_add()
On arm64, during kdump kernel saves vmcore, it runs into the following bug:
...
[   15.148919] usercopy: Kernel memory exposure attempt detected from SLUB object 'kmem_cache_node' (offset 0, size 4096)!
[   15.159707] ------------[ cut here ]------------
[   15.164311] kernel BUG at mm/usercopy.c:99!
[   15.168482] Internal error: Oops - BUG: 0 [#1] SMP
[   15.173261] Modules linked in: xfs libcrc32c crct10dif_ce ghash_ce sha2_ce sha256_arm64 sha1_ce sbsa_gwdt ast i2c_algo_bit drm_vram_helper drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops cec drm_ttm_helper ttm drm nvme nvme_core xgene_hwmon i2c_designware_platform i2c_designware_core dm_mirror dm_region_hash dm_log dm_mod overlay squashfs zstd_decompress loop
[   15.206186] CPU: 0 PID: 542 Comm: cp Not tainted 5.16.0-rc4 #1
[   15.212006] Hardware name: GIGABYTE R272-P30-JG/MP32-AR0-JG, BIOS F12 (SCP: 1.5.20210426) 05/13/2021
[   15.221125] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[   15.228073] pc : usercopy_abort+0x9c/0xa0
[   15.232074] lr : usercopy_abort+0x9c/0xa0
[   15.236070] sp : ffff8000121abba0
[   15.239371] x29: ffff8000121abbb0 x28: 0000000000003000 x27: 0000000000000000
[   15.246494] x26: 0000000080000400 x25: 0000ffff885c7000 x24: 0000000000000000
[   15.253617] x23: 000007ff80400000 x22: ffff07ff80401000 x21: 0000000000000001
[   15.260739] x20: 0000000000001000 x19: ffff07ff80400000 x18: ffffffffffffffff
[   15.267861] x17: 656a626f2042554c x16: 53206d6f72662064 x15: 6574636574656420
[   15.274983] x14: 74706d6574746120 x13: 2129363930342065 x12: 7a6973202c302074
[   15.282105] x11: ffffc8b041d1b148 x10: 00000000ffff8000 x9 : ffffc8b04012812c
[   15.289228] x8 : 00000000ffff7fff x7 : ffffc8b041d1b148 x6 : 0000000000000000
[   15.296349] x5 : 0000000000000000 x4 : 0000000000007fff x3 : 0000000000000000
[   15.303471] x2 : 0000000000000000 x1 : ffff07ff8c064800 x0 : 000000000000006b
[   15.310593] Call trace:
[   15.313027]  usercopy_abort+0x9c/0xa0
[   15.316677]  __check_heap_object+0xd4/0xf0
[   15.320762]  __check_object_size.part.0+0x160/0x1e0
[   15.325628]  __check_object_size+0x2c/0x40
[   15.329711]  copy_oldmem_page+0x7c/0x140
[   15.333623]  read_from_oldmem.part.0+0xfc/0x1c0
[   15.338142]  __read_vmcore.constprop.0+0x23c/0x350
[   15.342920]  read_vmcore+0x28/0x34
[   15.346309]  proc_reg_read+0xb4/0xf0
[   15.349871]  vfs_read+0xb8/0x1f0
[   15.353088]  ksys_read+0x74/0x100
[   15.356390]  __arm64_sys_read+0x28/0x34
...

This bug introduced by commit b261dba2fd ("arm64: kdump: Remove custom
linux,usable-memory-range handling"), which moves
memblock_cap_memory_range() to fdt, but it breaches the rules that
memblock_cap_memory_range() should come after memblock_add() etc as said
in commit e888fa7bb8 ("memblock: Check memory add/cap ordering").

As a consequence, the virtual address set up by copy_oldmem_page() does
not bail out from the test of virt_addr_valid() in check_heap_object(),
and finally hits the BUG_ON().

Since memblock allocator has no idea about when the memblock is fully
populated, while efi_init() is aware, so tackling this issue by calling the
interface early_init_dt_check_for_usable_mem_range() exposed by of/fdt.

Fixes: b261dba2fd ("arm64: kdump: Remove custom linux,usable-memory-range handling")
Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Nick Terrell <terrelln@fb.com>
Cc: linux-arm-kernel@lists.infradead.org
To: devicetree@vger.kernel.org
To: linux-efi@vger.kernel.org
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211215021348.8766-1-kernelfans@gmail.com
2021-12-22 09:28:26 -04:00
Cristian Marussi
94d0cd1da1 firmware: arm_scmi: Add new parameter to mark_txdone
Add a new xfer parameter to mark_txdone transport operation which enables
the SCMI core to optionally pass back into the transport layer a reference
to the xfer descriptor that is being handled.

Link: https://lore.kernel.org/r/20211220195646.44498-9-cristian.marussi@arm.com
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-21 10:59:38 +00:00
Cristian Marussi
0bfdca8a86 firmware: arm_scmi: Add atomic mode support to smc transport
Add a Kernel configuration option to enable SCMI SMC transport atomic
mode operation for selected SCMI transactions and leave it as default
disabled.

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.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-21 10:59:38 +00:00
Cristian Marussi
69255e7468 firmware: arm_scmi: Add support for atomic transports
An SCMI transport can be configured as .atomic_enabled in order to signal
to the SCMI core that all its TX path is executed in atomic context and
that, when requested, polling mode should be used while waiting for command
responses.

When a specific platform configuration had properly configured such a
transport as .atomic_enabled, the SCMI core will also take care not to
sleep in the corresponding RX path while waiting for a response if that
specific command transaction was requested as atomic using polling mode.

Asynchronous commands should not be used in an atomic context and so a
warning is emitted if polling was requested for an asynchronous command.

Add also a method to check, from the SCMI drivers, if the underlying SCMI
transport is currently configured to support atomic transactions: this will
be used by upper layers to determine if atomic requests can be supported at
all on this SCMI instance.

Link: https://lore.kernel.org/r/20211220195646.44498-7-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-21 10:59:37 +00:00
Cristian Marussi
bf322084fe firmware: arm_scmi: Make optee support sync_cmds_completed_on_ret
Declare each OPTEE SCMI channel as not having a completion_irq so as to
enable polling mode and then enable also .sync_cmds_completed_on_ret flag
in the OPTEE transport descriptor so that real polling is itself
effectively bypassed on the rx path: once the optee command invocation has
successfully returned the core will directly fetch the response from the
shared memory area.

Remove OPTEE SCMI transport specific .poll_done callback support since
real polling is effectively bypassed when .sync_cmds_completed_on_ret is
set.

Add OPTEE SCMI transport specific .mark_txdone callback support in order to
properly handle channel locking along the tx path.

Link: https://lore.kernel.org/r/20211220195646.44498-6-cristian.marussi@arm.com
Cc: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-21 10:59:37 +00:00
Cristian Marussi
117542b81f firmware: arm_scmi: Make smc support sync_cmds_completed_on_ret
Enable sync_cmds_completed_on_ret in the SMC transport descriptor and
remove SMC specific .poll_done callback support since polling is bypassed
when sync_cmds_completed_on_ret is set.

Link: https://lore.kernel.org/r/20211220195646.44498-5-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-21 10:59:37 +00:00
Cristian Marussi
31d2f803c1 firmware: arm_scmi: Add sync_cmds_completed_on_ret transport flag
Add a flag to let the transport signal to the core if its handling of sync
command implies that, after .send_message has returned successfully, the
requested command can be assumed to be fully and completely executed on
SCMI platform side so that any possible response value is already
immediately available to be retrieved by a .fetch_response: in other words
the polling phase can be skipped in such a case and the response values
accessed straight away.

Note that all of the above applies only when polling mode of operation was
selected by the core: if instead a completion IRQ was found to be available
the normal response processing path based on completions will still be
followed.

Link: https://lore.kernel.org/r/20211220195646.44498-4-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-21 10:59:26 +00:00
Cristian Marussi
f716cbd33f firmware: arm_scmi: Make smc transport use common completions
When a completion irq is available use it and delegate command completion
handling to the core SCMI completion mechanism.

If no completion irq is available revert to polling, using the core common
polling machinery.

Link: https://lore.kernel.org/r/20211220195646.44498-3-cristian.marussi@arm.com
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-21 10:55:55 +00:00
Cristian Marussi
a690b7e6e7 firmware: arm_scmi: Add configurable polling mode for transports
SCMI communications along TX channels can optionally be provided of a
completion interrupt; when such interrupt is not available, command
transactions should rely on polling, where the SCMI core takes care to
repeatedly evaluate the transport-specific .poll_done() function, if
available, to determine if and when a request was fully completed or
timed out.

Such mechanism is already present and working on a single transfer base:
SCMI protocols can indeed enable hdr.poll_completion on specific commands
ahead of each transfer and cause that transaction to be handled with
polling.

Introduce a couple of flags to be able to enforce such polling behaviour
globally at will:

 - scmi_desc.force_polling: to statically switch the whole transport to
   polling mode.

 - scmi_chan_info.no_completion_irq: to switch a single channel dynamically
   to polling mode if, at runtime, is determined that no completion
   interrupt was available for such channel.

Link: https://lore.kernel.org/r/20211220195646.44498-2-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-21 10:55:11 +00:00
Johan Hovold
bb84e64f8f firmware: qemu_fw_cfg: remove sysfs entries explicitly
Explicitly remove the file entries from sysfs before dropping the final
reference for symmetry reasons and for consistency with the rest of the
driver.

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-5-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-21 10:14:53 +01:00
Johan Hovold
433b7cd1e7 firmware: qemu_fw_cfg: fix sysfs information leak
Make sure to always NUL-terminate file names retrieved from the firmware
to avoid accessing data beyond the entry slab buffer and exposing it
through sysfs in case the firmware data is corrupt.

Fixes: 75f3e8e47f ("firmware: introduce sysfs driver for QEMU's fw_cfg device")
Cc: stable@vger.kernel.org      # 4.6
Cc: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-4-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-21 10:14:52 +01:00
Johan Hovold
47a1db8e79 firmware: qemu_fw_cfg: fix kobject leak in probe error path
An initialised kobject must be freed using kobject_put() to avoid
leaking associated resources (e.g. the object name).

Commit fe3c606843 ("firmware: Fix a reference count leak.") "fixed"
the leak in the first error path of the file registration helper but
left the second one unchanged. This "fix" would however result in a NULL
pointer dereference due to the release function also removing the never
added entry from the fw_cfg_entry_cache list. This has now been
addressed.

Fix the remaining kobject leak by restoring the common error path and
adding the missing kobject_put().

Fixes: 75f3e8e47f ("firmware: introduce sysfs driver for QEMU's fw_cfg device")
Cc: stable@vger.kernel.org      # 4.6
Cc: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-21 10:14:52 +01:00
Johan Hovold
a57ac7acdc firmware: qemu_fw_cfg: fix NULL-pointer deref on duplicate entries
Commit fe3c606843 ("firmware: Fix a reference count leak.") "fixed"
a kobject leak in the file registration helper by properly calling
kobject_put() for the entry in case registration of the object fails
(e.g. due to a name collision).

This would however result in a NULL pointer dereference when the
release function tries to remove the never added entry from the
fw_cfg_entry_cache list.

Fix this by moving the list-removal out of the release function.

Note that the offending commit was one of the benign looking umn.edu
fixes which was reviewed but not reverted. [1][2]

[1] https://lore.kernel.org/r/202105051005.49BFABCE@keescook
[2] https://lore.kernel.org/all/YIg7ZOZvS3a8LjSv@kroah.com

Fixes: fe3c606843 ("firmware: Fix a reference count leak.")
Cc: stable@vger.kernel.org      # 5.8
Cc: Qiushi Wu <wu000273@umn.edu>
Cc: Kees Cook <keescook@chromium.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211201132528.30025-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-21 10:14:52 +01:00
Ben Hutchings
d185a3466f firmware: Update Kconfig help text for Google firmware
The help text for GOOGLE_FIRMWARE states that it should only be
enabled when building a kernel for Google's own servers.  However,
many of the drivers dependent on it are also useful on Chromebooks or
on any platform using coreboot.

Update the help text to reflect this double duty.

Fixes: d384d6f43d ("firmware: google memconsole: Add coreboot support")
Reviewed-by: Julius Werner <jwerner@chromium.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Link: https://lore.kernel.org/r/20180618225540.GD14131@decadent.org.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-21 10:12:31 +01:00
Arnd Bergmann
4f34ebadff SoC: Keystone driver update for v5.17
* k3-socinfo: Add entry for J721S2 SoC family
 * Misc fixups for tisci, pruss, knav_dma
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Merge tag 'ti-driver-soc-fixes-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ti/linux into arm/drivers

SoC: Keystone driver update for v5.17

* k3-socinfo: Add entry for J721S2 SoC family
* Misc fixups for tisci, pruss, knav_dma

* tag 'ti-driver-soc-fixes-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ti/linux:
  soc: ti: knav_dma: Fix NULL vs IS_ERR() checking in dma_init
  soc: ti: k3-socinfo: Add entry for J721S2 SoC family
  firmware: ti_sci: rm: remove unneeded semicolon
  soc: ti: pruss: fix referenced node in error message

Link: https://lore.kernel.org/r/20211217154921.cagzppcensxx6wm4@pension
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-12-20 12:51:19 +01:00
Cristian Marussi
f872af0909 firmware: arm_scmi: Use new trace event scmi_xfer_response_wait
Use new trace event to mark start of waiting for response section.

Link: https://lore.kernel.org/r/20211129191156.29322-6-cristian.marussi@arm.com
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-13 17:45:36 +00:00
Cristian Marussi
5a731aebd3 firmware: arm_scmi: Refactor message response path
Refactor code path waiting for message responses into a dedicated helper
function.

No functional change.

Link: https://lore.kernel.org/r/20211129191156.29322-4-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-13 17:45:36 +00:00
Cristian Marussi
582730b9cb firmware: arm_scmi: Set polling timeout to max_rx_timeout_ms
Use transport specific transmission timeout (max_rx_timeout_ms) also for
polling transactions.

Initially when polling mode was added, it was intended to be used only
in scheduler context and hence the choice of 100us for the polling timeout.
However the only user for that was dropped for other SCMI concurrency
issues, so it shouldn't cause any issue to increase this timeout value now.

Link: https://lore.kernel.org/r/20211129191156.29322-3-cristian.marussi@arm.com
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
[sudeep.holla: Updated commit message with historical facts about 100us timeout]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-13 17:41:47 +00:00
Sudeep Holla
865ed67ab9
firmware: arm_scpi: Fix string overflow in SCPI genpd driver
Without the bound checks for scpi_pd->name, it could result in the buffer
overflow when copying the SCPI device name from the corresponding device
tree node as the name string is set at maximum size of 30.

Let us fix it by using devm_kasprintf so that the string buffer is
allocated dynamically.

Fixes: 8bec4337ad ("firmware: scpi: add device power domain support using genpd")
Reported-by: Pedro Batista <pedbap.g@gmail.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Cc: stable@vger.kernel.org
Cc: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20211209120456.696879-1-sudeep.holla@arm.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-12-13 15:17:37 +01:00
Arnd Bergmann
7ad1a90a6a firmware: Fixes for v5.16-rc5
This contains a single fix for an incorrect usage of sizeof().
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Merge tag 'tegra-for-5.16-firmware-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/fixes

firmware: Fixes for v5.16-rc5

This contains a single fix for an incorrect usage of sizeof().

* tag 'tegra-for-5.16-firmware-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  firmware: tegra: Fix error application of sizeof() to pointer

Link: https://lore.kernel.org/r/20211207162115.450554-1-thierry.reding@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-12-13 15:04:34 +01:00
Rajan Vaja
168e05c131 firmware: xilinx: check return value of zynqmp_pm_get_api_version()
Currently return value of zynqmp_pm_get_api_version() is ignored.
Because of that, API version is checked in case of error also.
So add check for return value of zynqmp_pm_get_api_version().

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/1633509835-31949-1-git-send-email-rajan.vaja@xilinx.com
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2021-12-08 12:53:36 +01:00
Cristian Marussi
d211ddeb51 firmware: arm_scmi: Perform earlier cinfo lookup call in do_xfer
Lookup cinfo data early in do_xfer so as to avoid any further init work
on xfer structure in case of error.

No functional change.

Link: https://lore.kernel.org/r/20211129191156.29322-2-cristian.marussi@arm.com
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-12-06 11:00:30 +00:00
Abhyuday Godhasara
a515814e74 firmware: xilinx: instantiate xilinx event manager driver
Register simple platform device to instantiate Xilinx event
manager driver.

Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@xilinx.com>
Link: https://lore.kernel.org/r/20211129070216.30253-3-abhyuday.godhasara@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-03 16:08:46 +01:00
Charles Keepax
043c0a6278
firmware: cs_dsp: Move lockdep asserts to avoid potential null pointer
Move the lockdep asserts until after the ctl pointer has been checked
for NULL, to avoid potentially NULL pointer dereferences.

Fixes: fb2f364fb5b9 ("firmware: cs_dsp: Add lockdep asserts to interface functions")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211130102842.26410-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-30 13:08:12 +00:00
Sudeep Holla
afc9c1e26b firmware: arm_scmi: optee: Drop the support for the OPTEE shared dynamic buffer
The shared memory buffer allocated by the optee driver is normal cached
memory and can't be used with IOMEM APIs used in shmem_*.

We currently support only IO memory for shared memory and supporting
normal cached memory needs more changes and needs to be thought through
properly. So for now, let us drop the support for this OPTEE shared buffer.

Link: https://lore.kernel.org/r/20211125150730.188487-1-sudeep.holla@arm.com
Cc: Cristian Marussi <cristian.marussi@arm.com>
Cc: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-29 14:32:30 +00:00
Greg Kroah-Hartman
5d331b5922 Merge 5.16-rc3 into char-misc-next
We need the char/misc fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-29 08:00:54 +01:00
Wei Yongjun
61bc76be36 firmware: arm_scmi: optee: Fix missing mutex_init()
The driver allocates the mutex but not initialize it.
Use mutex_init() on it to initialize it correctly.

Link: https://lore.kernel.org/r/20211123083620.2366860-1-weiyongjun1@huawei.com
Fixes: 5f90f189a0 ("firmware: arm_scmi: Add optee transport")
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-23 14:59:46 +00:00
Jason Wang
7c1c1d36e8 firmware: ti_sci: rm: remove unneeded semicolon
The semicolon after `}' is unneeded. So, just remove it.

Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20211114055333.217919-1-wangborong@cdjrlc.com
2021-11-22 19:41:36 -06:00
Michael Kelley
e95d8eaee2 firmware: smccc: Fix check for ARCH_SOC_ID not implemented
The ARCH_FEATURES function ID is a 32-bit SMC call, which returns
a 32-bit result per the SMCCC spec.  Current code is doing a 64-bit
comparison against -1 (SMCCC_RET_NOT_SUPPORTED) to detect that the
feature is unimplemented.  That check doesn't work in a Hyper-V VM,
where the upper 32-bits are zero as allowed by the spec.

Cast the result as an 'int' so the comparison works. The change also
makes the code consistent with other similar checks in this file.

Fixes: 821b67fa46 ("firmware: smccc: Add ARCH_SOC_ID support")
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-11-22 11:42:59 +01:00
Ard Biesheuvel
20287d56f5 efi/libstub: consolidate initrd handling across architectures
Before adding TPM measurement of the initrd contents, refactor the
initrd handling slightly to be more self-contained and consistent.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://lore.kernel.org/r/20211119114745.1560453-4-ilias.apalodimas@linaro.org
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-11-21 17:08:10 +01:00
Ard Biesheuvel
4da87c5170 efi/libstub: add prototype of efi_tcg2_protocol::hash_log_extend_event()
Define the right prototype for efi_tcg2_protocol::hash_log_extend_event()
and add the required structs so we can start using it to measure the initrd
into the TPM if it was loaded by the EFI stub itself.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://lore.kernel.org/r/20211119114745.1560453-2-ilias.apalodimas@linaro.org
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-11-21 17:08:10 +01:00
Charles Keepax
5c903f64ce
firmware: cs_dsp: Allow creation of event controls
Some firmwares contain controls intended to convey firmware state back
to the host. Whilst more infrastructure will probably be needed for
these in time, as a first step allow creation of the controls, so said
firmwares arn't completely rejected.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-10-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17 22:16:28 +00:00
Charles Keepax
f444da38ac
firmware: cs_dsp: Add offset to cs_dsp read/write
Provide a mechanism to access only part of a control through the cs_dsp
interface.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-9-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17 22:16:27 +00:00
Charles Keepax
b329b3d394
firmware: cs_dsp: Clarify some kernel doc comments
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-8-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17 22:16:26 +00:00
Charles Keepax
86c6080407
firmware: cs_dsp: Perform NULL check in cs_dsp_coeff_write/read_ctrl
Add a NULL check to the cs_dsp_coeff_write/read_ctrl functions. This is
a major convenience for users of the cs_dsp library as it allows the call
to cs_dsp_get_ctl to be inlined with the call to read/write the control
itself.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-7-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17 22:16:25 +00:00
Charles Keepax
dcee767667
firmware: cs_dsp: Add support for rev 2 coefficient files
Add support for the revision 2 coefficient file, this format is
identical to revision 1 and was simply added by accident to some
firmware. However unfortunately many firmwares have leaked into
production using this and as such driver support really needs to
be added for it.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-6-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17 22:16:24 +00:00
Charles Keepax
40a34ae730
firmware: cs_dsp: Print messages from bin files
The coefficient file contains various info strings, and the equivalent
strings are printed from the WMFW file as it is loaded. Add support
for printing these from the coefficient file as well.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-5-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17 22:16:23 +00:00
Charles Keepax
14055b5a3a
firmware: cs_dsp: Add pre_run callback
The code already has a post_run callback, add a matching pre_run
callback to the client_ops that is called before execution is started.
This callback provides a convenient place for the client code to
set DSP controls or hardware that requires configuration before
the DSP core actually starts execution. Note that placing this callback
before cs_dsp_coeff_sync_controls is important to ensure that any
control values are then correctly synced out to the chip.

Co-authored-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-4-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17 22:16:22 +00:00
Charles Keepax
2925748ead
firmware: cs_dsp: Add version checks on coefficient loading
The firmware coefficient files contain version information that is
currently ignored by the cs_dsp code. This information specifies which
version of the firmware the coefficient were generated for. Add a check
into the code which prints a warning in the case the coefficient and
firmware differ in version, in many cases this will be ok but it is not
always, so best to let the user know there is a potential issue.

Co-authored-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-3-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17 22:16:21 +00:00
Charles Keepax
5065cfabec
firmware: cs_dsp: Add lockdep asserts to interface functions
Some of the control functions exposed by the cs_dsp code require the
pwr_lock to be held by the caller. Add lockdep_assert_held calls to
ensure this is done correctly.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17 22:16:20 +00:00
Abhyuday Godhasara
f4d7752567 firmware: xilinx: export the feature check of zynqmp firmware
Export the zynqmp_pm_feature(), so it can be use by other as to get API
version available in firmware.

Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@xilinx.com>
Link: https://lore.kernel.org/r/20211026042525.26612-4-abhyuday.godhasara@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-17 16:11:48 +01:00
Abhyuday Godhasara
1881eadb20 firmware: xilinx: add register notifier in zynqmp firmware
In zynqmp-firmware, register notifier is not supported, add support of
register notifier in zynqmp-firmware.

Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@xilinx.com>
Link: https://lore.kernel.org/r/20211026042525.26612-2-abhyuday.godhasara@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-17 16:11:48 +01:00
Cristian Marussi
530897ecdb firmware: arm_scmi: Make virtio Version_1 compliance optional
Introduce a compilation option to disable strict enforcement of compliance
against VirtIO Version_1 backends, so as to allow to support also Legacy
VirtIO devices implementations.

Link: https://lore.kernel.org/r/20211115102910.7639-1-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-17 11:24:51 +00:00
Etienne Carriere
5f90f189a0 firmware: arm_scmi: Add optee transport
Add a new transport channel to the SCMI firmware interface driver for
SCMI message exchange based on optee transport channel. The optee
transport is realized by connecting and invoking OP-TEE SCMI service
interface PTA.

Optee transport support (CONFIG_ARM_SCMI_TRANSPORT_OPTEE) is default
enabled when optee driver (CONFIG_OPTEE) is enabled. Effective optee
transport is setup upon OP-TEE SCMI service discovery at optee
device initialization. For this SCMI UUID is registered to the optee
bus for probing. This is done from the link_supplier operator of the
SCMI optee transport.

The optee transport can use a statically defined shared memory in
which case SCMI device tree node defines it using an "arm,scmi-shmem"
compatible phandle through property shmem. Alternatively, optee transport
allocates the shared memory buffer from the optee driver when no shmem
property is defined.

The protocol used to exchange SCMI message over that shared memory is
negotiated between optee transport driver and the OP-TEE service through
capabilities 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.h
Link: https://lore.kernel.org/r/20211028140009.23331-2-etienne.carriere@linaro.org
Cc: Cristian Marussi <cristian.marussi@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-17 11:24:51 +00:00
Cristian Marussi
026d9835b6 firmware: arm_scmi: Fix type error assignment in voltage protocol
Fix incorrect type assignment error reported by sparse as:

drivers/firmware/arm_scmi/voltage.c:159:42: warning: incorrect type in assignment (different base types)
drivers/firmware/arm_scmi/voltage.c:159:42: expected restricted __le32 [usertype] level_index
drivers/firmware/arm_scmi/voltage.c:159:42: got unsigned int [usertype] desc_index

Link: https://lore.kernel.org/r/20211115154043.49284-1-cristian.marussi@arm.com
Fixes: 2add5cacff ("firmware: arm_scmi: Add voltage domain management protocol support")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-17 11:24:50 +00:00
Cristian Marussi
dfa25e9f0f firmware: arm_scmi: Review some virtio log messages
Be more verbose avoiding to use _once flavour of dev_info/_err/_notice.
Remove usage of __func_ to identify which vqueue is referred in some error
messages and explicitly name the TX/RX vqueue.

Link: https://lore.kernel.org/r/20210916103336.7243-1-cristian.marussi@arm.com
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-17 11:24:50 +00:00
Cristian Marussi
bd074e5039 firmware: arm_scmi: Fix type error in sensor protocol
Fix incorrect type error reported by sparse as:

drivers/firmware/arm_scmi/sensors.c:640:28: warning: incorrect type in argument 1 (different base types)
drivers/firmware/arm_scmi/sensors.c:640:28: expected unsigned int [usertype] val
drivers/firmware/arm_scmi/sensors.c:640:28: got restricted __le32 [usertype]

Link: https://lore.kernel.org/r/20211115154043.49284-2-cristian.marussi@arm.com
Fixes: 7b83c5f410 ("firmware: arm_scmi: Add SCMI v3.0 sensor configuration support")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-17 11:24:50 +00:00
Peng Fan
1446fc6c67 firmware: arm_scmi: pm: Propagate return value to caller
of_genpd_add_provider_onecell may return error, so let's propagate
its return value to caller

Link: https://lore.kernel.org/r/20211116064227.20571-1-peng.fan@oss.nxp.com
Fixes: 898216c97e ("firmware: arm_scmi: add device power domain support using genpd")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-17 11:24:50 +00:00
Vincent Guittot
d1cbd9e0f7 firmware: arm_scmi: Fix base agent discover response
According to scmi specification, the response of the discover agent request
is made of:
- int32 status
- uint32 agent_id
- uint8 name[16]

but the current implementation doesn't take into account the agent_id field
and only allocates a rx buffer of SCMI_MAX_STR_SIZE length

Allocate the correct length for rx buffer and copy the name from the
correct offset in the response.

While no error were returned until v5.15, v5.16-rc1 fails with virtio_scmi
transport channel:

 | arm-scmi firmware:scmi0: SCMI Notifications - Core Enabled.
 | arm-scmi firmware:scmi0: SCMI Protocol v2.0 'Linaro:PMWG' Firmware version 0x2090000
 | scmi-virtio virtio0: tx:used len 28 is larger than in buflen 24

Link: https://lore.kernel.org/r/20211117081856.9932-1-vincent.guittot@linaro.org
Fixes: b6f20ff8bd ("firmware: arm_scmi: add common infrastructure and support for base protocol")
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-17 11:24:50 +00:00
Simon Trimmer
749303055b
firmware: cs_dsp: tidy includes in cs_dsp.c and cs_dsp.h
This patch removes unused included header files and moves others into
cs_dsp.h to ensure that types referenced in the header file are properly
described to prevent compiler warnings.

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211115120215.56824-1-simont@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-15 19:25:24 +00:00
Cristian Marussi
9516116572 firmware: arm_scmi: Fix null de-reference on error path
During channel setup a failure in the call of scmi_vio_feed_vq_rx() leads
to an attempt to access a dev pointer by dereferencing vioch->cinfo at
a time when vioch->cinfo has still to be initialized.

Fix it by providing the device reference directly to scmi_vio_feed_vq_rx.

Link: https://lore.kernel.org/r/20211112180705.41601-1-cristian.marussi@arm.com
Fixes: 46abe13b5e ("firmware: arm_scmi: Add virtio transport")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-11-15 10:58:42 +00:00
Linus Torvalds
5147da902e Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull exit cleanups from Eric Biederman:
 "While looking at some issues related to the exit path in the kernel I
  found several instances where the code is not using the existing
  abstractions properly.

  This set of changes introduces force_fatal_sig a way of sending a
  signal and not allowing it to be caught, and corrects the misuse of
  the existing abstractions that I found.

  A lot of the misuse of the existing abstractions are silly things such
  as doing something after calling a no return function, rolling BUG by
  hand, doing more work than necessary to terminate a kernel thread, or
  calling do_exit(SIGKILL) instead of calling force_sig(SIGKILL).

  In the review a deficiency in force_fatal_sig and force_sig_seccomp
  where ptrace or sigaction could prevent the delivery of the signal was
  found. I have added a change that adds SA_IMMUTABLE to change that
  makes it impossible to interrupt the delivery of those signals, and
  allows backporting to fix force_sig_seccomp

  And Arnd found an issue where a function passed to kthread_run had the
  wrong prototype, and after my cleanup was failing to build."

* 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (23 commits)
  soc: ti: fix wkup_m3_rproc_boot_thread return type
  signal: Add SA_IMMUTABLE to ensure forced siganls do not get changed
  signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV)
  exit/r8188eu: Replace the macro thread_exit with a simple return 0
  exit/rtl8712: Replace the macro thread_exit with a simple return 0
  exit/rtl8723bs: Replace the macro thread_exit with a simple return 0
  signal/x86: In emulate_vsyscall force a signal instead of calling do_exit
  signal/sparc32: In setup_rt_frame and setup_fram use force_fatal_sig
  signal/sparc32: Exit with a fatal signal when try_to_clear_window_buffer fails
  exit/syscall_user_dispatch: Send ordinary signals on failure
  signal: Implement force_fatal_sig
  exit/kthread: Have kernel threads return instead of calling do_exit
  signal/s390: Use force_sigsegv in default_trap_handler
  signal/vm86_32: Properly send SIGSEGV when the vm86 state cannot be saved.
  signal/vm86_32: Replace open coded BUG_ON with an actual BUG_ON
  signal/sparc: In setup_tsb_params convert open coded BUG into BUG
  signal/powerpc: On swapcontext failure force SIGSEGV
  signal/sh: Use force_sig(SIGKILL) instead of do_group_exit(SIGKILL)
  signal/mips: Update (_save|_restore)_fp_context to fail with -EFAULT
  signal/sparc32: Remove unreachable do_exit in do_sparc_fault
  ...
2021-11-10 16:15:54 -08:00
Linus Torvalds
d20f7a09e5 gpio updates for v5.16
- new driver: gpio-modepin (plus relevant change in zynqmp firmware)
 - add interrupt support to gpio-virtio
 - enable the 'gpio-line-names' property in the DT bindings for gpio-rockchip
 - use the subsystem helpers where applicable in gpio-uniphier instead of
   accessing IRQ structures directly
 - code shrink in gpio-xilinx
 - add interrupt to gpio-mlxbf2 (and include the removal of custom interrupt
   code from the mellanox ethernet driver)
 - support multiple interrupts per bank in gpio-tegra186 (and force one interrupt
   per bank in older models)
 - fix GPIO line IRQ offset calculation in gpio-realtek-otto
 - drop unneeded MODULE_ALIAS expansions in multiple drivers
 - code cleanup in gpio-aggregator
 - minor improvements in gpio-max730x and gpio-mc33880
 - Kconfig cleanups
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Merge tag 'gpio-updates-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have a single new driver, new features in others and some cleanups
  all over the place.

  Nothing really stands out and it is all relatively small.

   - new driver: gpio-modepin (plus relevant change in zynqmp firmware)

   - add interrupt support to gpio-virtio

   - enable the 'gpio-line-names' property in the DT bindings for
     gpio-rockchip

   - use the subsystem helpers where applicable in gpio-uniphier instead
     of accessing IRQ structures directly

   - code shrink in gpio-xilinx

   - add interrupt to gpio-mlxbf2 (and include the removal of custom
     interrupt code from the mellanox ethernet driver)

   - support multiple interrupts per bank in gpio-tegra186 (and force
     one interrupt per bank in older models)

   - fix GPIO line IRQ offset calculation in gpio-realtek-otto

   - drop unneeded MODULE_ALIAS expansions in multiple drivers

   - code cleanup in gpio-aggregator

   - minor improvements in gpio-max730x and gpio-mc33880

   - Kconfig cleanups"

* tag 'gpio-updates-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  virtio_gpio: drop packed attribute
  gpio: virtio: Add IRQ support
  gpio: realtek-otto: fix GPIO line IRQ offset
  gpio: clean up Kconfig file
  net: mellanox: mlxbf_gige: Replace non-standard interrupt handling
  gpio: mlxbf2: Introduce IRQ support
  gpio: mc33880: Drop if with an always false condition
  gpio: max730x: Make __max730x_remove() return void
  gpio: aggregator: Wrap access to gpiochip_fwd.tmp[]
  gpio: modepin: Add driver support for modepin GPIO controller
  dt-bindings: gpio: zynqmp: Add binding documentation for modepin
  firmware: zynqmp: Add MMIO read and write support for PS_MODE pin
  gpio: tps65218: drop unneeded MODULE_ALIAS
  gpio: max77620: drop unneeded MODULE_ALIAS
  gpio: xilinx: simplify getting .driver_data
  gpio: tegra186: Support multiple interrupts per bank
  gpio: tegra186: Force one interrupt per bank
  gpio: uniphier: Use helper functions to get private data from IRQ data
  gpio: uniphier: Use helper function to get IRQ hardware number
  dt-bindings: gpio: add gpio-line-names to rockchip,gpio-bank.yaml
2021-11-08 11:55:21 -08:00
Linus Torvalds
512b7931ad Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
 "257 patches.

  Subsystems affected by this patch series: scripts, ocfs2, vfs, and
  mm (slab-generic, slab, slub, kconfig, dax, kasan, debug, pagecache,
  gup, swap, memcg, pagemap, mprotect, mremap, iomap, tracing, vmalloc,
  pagealloc, memory-failure, hugetlb, userfaultfd, vmscan, tools,
  memblock, oom-kill, hugetlbfs, migration, thp, readahead, nommu, ksm,
  vmstat, madvise, memory-hotplug, rmap, zsmalloc, highmem, zram,
  cleanups, kfence, and damon)"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (257 commits)
  mm/damon: remove return value from before_terminate callback
  mm/damon: fix a few spelling mistakes in comments and a pr_debug message
  mm/damon: simplify stop mechanism
  Docs/admin-guide/mm/pagemap: wordsmith page flags descriptions
  Docs/admin-guide/mm/damon/start: simplify the content
  Docs/admin-guide/mm/damon/start: fix a wrong link
  Docs/admin-guide/mm/damon/start: fix wrong example commands
  mm/damon/dbgfs: add adaptive_targets list check before enable monitor_on
  mm/damon: remove unnecessary variable initialization
  Documentation/admin-guide/mm/damon: add a document for DAMON_RECLAIM
  mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM)
  selftests/damon: support watermarks
  mm/damon/dbgfs: support watermarks
  mm/damon/schemes: activate schemes based on a watermarks mechanism
  tools/selftests/damon: update for regions prioritization of schemes
  mm/damon/dbgfs: support prioritization weights
  mm/damon/vaddr,paddr: support pageout prioritization
  mm/damon/schemes: prioritize regions within the quotas
  mm/damon/selftests: support schemes quotas
  mm/damon/dbgfs: support quotas of schemes
  ...
2021-11-06 14:08:17 -07:00
Mike Rapoport
3ecc68349b memblock: rename memblock_free to memblock_phys_free
Since memblock_free() operates on a physical range, make its name
reflect it and rename it to memblock_phys_free(), so it will be a
logical counterpart to memblock_phys_alloc().

The callers are updated with the below semantic patch:

    @@
    expression addr;
    expression size;
    @@
    - memblock_free(addr, size);
    + memblock_phys_free(addr, size);

Link: https://lkml.kernel.org/r/20210930185031.18648-6-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Juergen Gross <jgross@suse.com>
Cc: Shahab Vahedi <Shahab.Vahedi@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-11-06 13:30:41 -07:00
Linus Torvalds
d461e96cd2 ARM: SoC drivers for 5.16
These are all the driver updates for SoC specific drivers. There
 are a couple of subsystems with individual maintainers picking up
 their patches here:
 
  - The reset controller subsystem add support for a few new SoC
    variants to existing drivers, along with other minor improvements
 
  - The OP-TEE subsystem gets a driver for the ARM FF-A transport
 
  - The memory controller subsystem has improvements for Tegra,
    Mediatek, Renesas, Freescale and Broadcom specific drivers.
 
  - The tegra cpuidle driver changes get merged through this
    tree this time. There are only minor changes, but they depend
    on other tegra driver updates here.
 
  - The ep93xx platform finally moves to using the drivers/clk/
    subsystem, moving the code out of arch/arm in the process.
    This depends on a small sound driver change that is included
    here as well.
 
  - There are some minor updates for Qualcomm and Tegra specific
    firmware drivers.
 
 The other driver updates are mainly for drivers/soc, which contains
 a mixture of vendor specific drivers that don't really fit elsewhere:
 
  - Mediatek drivers gain more support for MT8192, with new support for
    hw-mutex and mmsys routing, plus support for reset lines in the
    mmsys driver.
 
  - Qualcomm gains a new "sleep stats" driver, and support for
    the "Generic Packet Router" in the APR driver.
 
  - There is a new user interface for routing the UARTS on ASpeed
    BMCs, something that apparently nobody else has needed so far.
 
  - More drivers can now be built as loadable modules, in particular
    for Broadcom and Samsung platforms.
 
  - Lots of improvements to the TI sysc driver for better suspend/resume
    support
 
 Finally, there are lots of minor cleanups and new device IDs for
 amlogic, renesas, tegra, qualcomm, mediateka, samsung, imx, layerscape,
 allwinner, broadcom, and omap.
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Merge tag 'drivers-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are all the driver updates for SoC specific drivers. There are a
  couple of subsystems with individual maintainers picking up their
  patches here:

   - The reset controller subsystem add support for a few new SoC
     variants to existing drivers, along with other minor improvements

   - The OP-TEE subsystem gets a driver for the ARM FF-A transport

   - The memory controller subsystem has improvements for Tegra,
     Mediatek, Renesas, Freescale and Broadcom specific drivers.

   - The tegra cpuidle driver changes get merged through this tree this
     time. There are only minor changes, but they depend on other tegra
     driver updates here.

   - The ep93xx platform finally moves to using the drivers/clk/
     subsystem, moving the code out of arch/arm in the process. This
     depends on a small sound driver change that is included here as
     well.

   - There are some minor updates for Qualcomm and Tegra specific
     firmware drivers.

  The other driver updates are mainly for drivers/soc, which contains a
  mixture of vendor specific drivers that don't really fit elsewhere:

   - Mediatek drivers gain more support for MT8192, with new support for
     hw-mutex and mmsys routing, plus support for reset lines in the
     mmsys driver.

   - Qualcomm gains a new "sleep stats" driver, and support for the
     "Generic Packet Router" in the APR driver.

   - There is a new user interface for routing the UARTS on ASpeed BMCs,
     something that apparently nobody else has needed so far.

   - More drivers can now be built as loadable modules, in particular
     for Broadcom and Samsung platforms.

   - Lots of improvements to the TI sysc driver for better
     suspend/resume support"

  Finally, there are lots of minor cleanups and new device IDs for
  amlogic, renesas, tegra, qualcomm, mediateka, samsung, imx,
  layerscape, allwinner, broadcom, and omap"

* tag 'drivers-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (179 commits)
  optee: Fix spelling mistake "reclain" -> "reclaim"
  Revert "firmware: qcom: scm: Add support for MC boot address API"
  qcom: spm: allow compile-testing
  firmware: arm_ffa: Remove unused 'compat_version' variable
  soc: samsung: exynos-chipid: add exynosautov9 SoC support
  firmware: qcom: scm: Don't break compile test on non-ARM platforms
  soc: qcom: smp2p: Add of_node_put() before goto
  soc: qcom: apr: Add of_node_put() before return
  soc: qcom: qcom_stats: Fix client votes offset
  soc: qcom: rpmhpd: fix sm8350_mxc's peer domain
  dt-bindings: arm: cpus: Document qcom,msm8916-smp enable-method
  ARM: qcom: Add qcom,msm8916-smp enable-method identical to MSM8226
  firmware: qcom: scm: Add support for MC boot address API
  soc: qcom: spm: Add 8916 SPM register data
  dt-bindings: soc: qcom: spm: Document qcom,msm8916-saw2-v3.0-cpu
  soc: qcom: socinfo: Add PM8150C and SMB2351 models
  firmware: qcom_scm: Fix error retval in __qcom_scm_is_call_available()
  soc: aspeed: Add UART routing support
  soc: fsl: dpio: rename the enqueue descriptor variable
  soc: fsl: dpio: use an explicit NULL instead of 0
  ...
2021-11-03 17:00:52 -07:00
Linus Torvalds
ff0700f036 sound updates for 5.16-rc1
Lots of code development have been see in ASoC side as usual, while
 the continued development on memalloc helper and USB-audio low-
 latency support are found in the rest.  Note that a few changes in the
 unusual places like arch/sh are included, which are a part of ASoC DAI
 format cleanups.
 
 ALSA core:
 - Continued memallloc helper updates and cleanups, now supporting
   non-coherent and non-contiguous pages
 - Fixes for races in mixer OSS layer
 
 ASoC:
 - A new version of the audio graph card which supports a wider range
   of systems
 - Several conversions to YAML DT bindings
 - Continuing cleanups to the SOF and Intel code
 - Move of the Cirrus DSP framework into drivers/firmware to allow for
   future use by non-audio DSPs
 - An overhaul of the cs42l42 driver, correcting many problems
 - DAI format terminology conversions over many drivers for cleanups
 - Support for AMD Vangogh and Yelow Cap, Cirrus CS35L41, Maxim
   MAX98520 and MAX98360A, Mediatek MT8195, Nuvoton NAU8821, nVidia
   Tegra210, NXP i.MX8ULP, Qualcomm AudioReach, Realtek ALC5682I-VS,
   RT5682S, and RT9120 and Rockchip RV1126 and RK3568
 
 USB-audio:
 - Continued improvements on low-latency playback
 - Quirks for Pioneer devices, Line6 HX-Stomp XL, Audient iD14
 
 HD-audio:
 - Reduce excessive udelay() calls on Intel platforms; this should
   reduce the CPU load with PulseAudio
 - Quirks for HP and Clevo laptops
 
 FireWire:
 - Support for meter information on MOTU
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Merge tag 'sound-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "Lots of code development have been see in ASoC side as usual, while
  the continued development on memalloc helper and USB-audio low-
  latency support are found in the rest.

  Note that a few changes in the unusual places like arch/sh are
  included, which are a part of ASoC DAI format cleanups.

  ALSA core:

   - Continued memalloc helper updates and cleanups, now supporting
     non-coherent and non-contiguous pages

   - Fixes for races in mixer OSS layer

  ASoC:

   - A new version of the audio graph card which supports a wider range
     of systems

   - Several conversions to YAML DT bindings

   - Continuing cleanups to the SOF and Intel code

   - Move of the Cirrus DSP framework into drivers/firmware to allow for
     future use by non-audio DSPs

   - An overhaul of the cs42l42 driver, correcting many problems

   - DAI format terminology conversions over many drivers for cleanups

   - Support for AMD Vangogh and Yelow Cap, Cirrus CS35L41, Maxim
     MAX98520 and MAX98360A, Mediatek MT8195, Nuvoton NAU8821, nVidia
     Tegra210, NXP i.MX8ULP, Qualcomm AudioReach, Realtek ALC5682I-VS,
     RT5682S, and RT9120 and Rockchip RV1126 and RK3568

  USB-audio:

   - Continued improvements on low-latency playback

   - Quirks for Pioneer devices, Line6 HX-Stomp XL, Audient iD14

  HD-audio:

   - Reduce excessive udelay() calls on Intel platforms; this should
     reduce the CPU load with PulseAudio

   - Quirks for HP and Clevo laptops

  FireWire:

   - Support for meter information on MOTU"

* tag 'sound-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (513 commits)
  ALSA: usb-audio: Add quirk for Audient iD14
  ALSA: hda/realtek: Add quirk for Clevo PC70HS
  ALSA: usb-audio: Line6 HX-Stomp XL USB_ID for 48k-fixed quirk
  ALSA: usb-audio: Add registration quirk for JBL Quantum 400
  ASoC: rsnd: Fix an error handling path in 'rsnd_node_count()'
  ASoC: tlv320aic3x: Make aic3x_remove() return void
  ASoC: Intel: soc-acpi: use const for all uses of snd_soc_acpi_codecs
  ASoC: Intel: soc-acpi-cht: shrink tables using compatible IDs
  ASoC: Intel: soc-acpi-byt: shrink tables using compatible IDs
  ASoC: Intel: sof_rt5682: use comp_ids to enumerate rt5682s
  ASoC: Intel: sof_rt5682: detect codec variant in probe function
  ASoC: soc-acpi: add comp_ids field for machine driver matching
  ASoC: mediatek: mt8195: add mt8195-mt6359-rt1011-rt5682 bindings document
  ASoC: mediatek: mt8195: add machine driver with mt6359, rt1011 and rt5682
  ASoC: Stop dummy from overriding hwparams
  ASoC: topology: Change topology device to card device
  ASoC: topology: Use correct device for prints
  ASoC: topology: Check for dapm widget completeness
  ASoC: topology: Add header payload_size verification
  ASoC: core: Remove invalid snd_soc_component_set_jack call
  ...
2021-11-03 07:49:25 -07:00
Linus Torvalds
2019295c9e spi: Updates for v5.16
This is quite a quiet release for SPI, there's been a bit of cleanup to
 the core from Uwe but nothing functionality wise.  We have added several
 new drivers, Cadence XSPI, Ingenic JZ47xx, Qualcomm SC7280 and SC7180
 and Xilinx Versal OSPI.
 
 There's a trivial conflict in the Tegra driver that's been causing
 issues.
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Merge tag 'spi-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "This is quite a quiet release for SPI, there's been a bit of cleanup
  to the core from Uwe but nothing functionality wise.

  We have added several new drivers, Cadence XSPI, Ingenic JZ47xx,
  Qualcomm SC7280 and SC7180 and Xilinx Versal OSPI"

* tag 'spi-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (41 commits)
  spi: Convert NXP flexspi to json schema
  spi: spi-geni-qcom: Add support for GPI dma
  spi: fsi: Fix contention in the FSI2SPI engine
  spi: spi-rpc-if: Check return value of rpcif_sw_init()
  spi: tegra210-quad: Put device into suspend on driver removal
  spi: tegra20-slink: Put device into suspend on driver removal
  spi: bcm-qspi: Fix missing clk_disable_unprepare() on error in bcm_qspi_probe()
  spi: at91-usart: replacing legacy gpio interface for gpiod
  spi: replace snprintf in show functions with sysfs_emit
  spi: cadence: Add of_node_put() before return
  spi: orion: Add of_node_put() before goto
  spi: cadence-quadspi: fix dma_unmap_single() call
  spi: tegra20: fix build with CONFIG_PM_SLEEP=n
  spi: bcm-qspi: add support for 3-wire mode for half duplex transfer
  spi: bcm-qspi: Add mspi spcr3 32/64-bits xfer mode
  spi: Make several public functions private to spi.c
  spi: Reorder functions to simplify the next commit
  spi: Remove unused function spi_busnum_to_master()
  spi: Move comment about chipselect check to the right place
  spi: fsi: Print status on error
  ...
2021-11-01 19:09:04 -07:00
Linus Torvalds
bf953917be Various hardening fixes and cleanups for 5.16-rc1
Hi Linus,
 
 Please, pull the following hardening fixes and cleanups that I've
 been collecting during the last development cycle. All of them have
 been baking in linux-next.
 
 Fix -Wcast-function-type error:
 
 - firewire: Remove function callback casts (Oscar Carter)
 
 Fix application of sizeof operator:
 
 - firmware/psci: fix application of sizeof to pointer (jing yangyang)
 
 Replace open coded instances with size_t saturating arithmetic helpers:
 
 - assoc_array: Avoid open coded arithmetic in allocator arguments (Len Baker)
 - writeback: prefer struct_size over open coded arithmetic (Len Baker)
 - aio: Prefer struct_size over open coded arithmetic (Len Baker)
 - dmaengine: pxa_dma: Prefer struct_size over open coded arithmetic (Len Baker)
 
 Flexible array transformation:
 
 - KVM: PPC: Replace zero-length array with flexible array member (Len Baker)
 
 Use 2-factor argument multiplication form:
 
 - nouveau/svm: Use kvcalloc() instead of kvzalloc() (Gustavo A. R. Silva)
 - xfs: Use kvcalloc() instead of kvzalloc() (Gustavo A. R. Silva)
 
 Thanks
 --
 Gustavo
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Merge tag 'kspp-misc-fixes-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull hardening fixes and cleanups from Gustavo A. R. Silva:
 "Various hardening fixes and cleanups that I've been collecting during
  the last development cycle:

  Fix -Wcast-function-type error:

   - firewire: Remove function callback casts (Oscar Carter)

  Fix application of sizeof operator:

   - firmware/psci: fix application of sizeof to pointer (jing yangyang)

  Replace open coded instances with size_t saturating arithmetic
  helpers:

   - assoc_array: Avoid open coded arithmetic in allocator arguments
     (Len Baker)

   - writeback: prefer struct_size over open coded arithmetic (Len
     Baker)

   - aio: Prefer struct_size over open coded arithmetic (Len Baker)

   - dmaengine: pxa_dma: Prefer struct_size over open coded arithmetic
     (Len Baker)

  Flexible array transformation:

   - KVM: PPC: Replace zero-length array with flexible array member (Len
     Baker)

  Use 2-factor argument multiplication form:

   - nouveau/svm: Use kvcalloc() instead of kvzalloc() (Gustavo A. R.
     Silva)

   - xfs: Use kvcalloc() instead of kvzalloc() (Gustavo A. R. Silva)"

* tag 'kspp-misc-fixes-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  firewire: Remove function callback casts
  nouveau/svm: Use kvcalloc() instead of kvzalloc()
  firmware/psci: fix application of sizeof to pointer
  dmaengine: pxa_dma: Prefer struct_size over open coded arithmetic
  KVM: PPC: Replace zero-length array with flexible array member
  aio: Prefer struct_size over open coded arithmetic
  writeback: prefer struct_size over open coded arithmetic
  xfs: Use kvcalloc() instead of kvzalloc()
  assoc_array: Avoid open coded arithmetic in allocator arguments
2021-11-01 17:29:10 -07:00
Linus Torvalds
93351d2cc9 EFI update for v5.16
Disable EFI runtime services by default on PREEMPT_RT, while adding the
 ability to re-enable them on demand by passing efi=runtime on the
 command line.
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Merge tag 'efi-next-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull EFI updates from Borislav Petkov:
 "The last EFI pull request which is forwarded through the tip tree, for
  v5.16. From now on, Ard will be sending stuff directly.

  Disable EFI runtime services by default on PREEMPT_RT, while adding
  the ability to re-enable them on demand by passing efi=runtime on the
  command line"

* tag 'efi-next-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi: Allow efi=runtime
  efi: Disable runtime services on RT
2021-11-01 15:05:48 -07:00
Eric W. Biederman
111e70490d exit/kthread: Have kernel threads return instead of calling do_exit
In 2009 Oleg reworked[1] the kernel threads so that it is not
necessary to call do_exit if you are not using kthread_stop().  Remove
the explicit calls of do_exit and complete_and_exit (with a NULL
completion) that were previously necessary.

[1] 63706172f3 ("kthreads: rework kthread_stop()")
Link: https://lkml.kernel.org/r/20211020174406.17889-12-ebiederm@xmission.com
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2021-10-29 14:31:33 -05:00
Arnd Bergmann
7db2bc925e Revert "firmware: qcom: scm: Add support for MC boot address API"
This reverts commits 55845f46df and c50031f03d, since this still
causes a build failure when QCOM_SCM is a loadable module, or when
CONFIG_SMP is disabled:

ERROR: modpost: "cpu_logical_map" [drivers/firmware/qcom-scm.ko] undefined!

This be done better for 5.17, but it's too late now to rework
properly.

Fixes: c50031f03d ("firmware: qcom: scm: Don't break compile test on non-ARM platforms")
Fixes: 55845f46df ("firmware: qcom: scm: Add support for MC boot address API")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-10-27 16:25:07 +02:00
jing yangyang
2ac5fb35cd firmware/psci: fix application of sizeof to pointer
sizeof when applied to a pointer typed expression gives the size of
the pointer.

./drivers/firmware/psci/psci_checker.c:158:41-47: ERROR application of sizeof to pointer

This issue was detected with the help of Coccinelle.

Fixes: 7401056de5 ("drivers/firmware: psci_checker: stash and use topology_core_cpumask for hotplug tests")
Cc: stable@vger.kernel.org
Reported-by: Zeal Robot <zealci@zte.com.cn>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: jing yangyang <jing.yangyang@zte.com.cn>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2021-10-26 17:40:54 -05:00
Arnd Bergmann
2275be723d Arm FF-A updates for v5.16
Just couple of minor updates:
 - Adding support for MEMORY_LEND API
 - Handling compatibility with different firmware versions(especially
   dealing with newer/higher versions than the one supported by the driver)
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Merge tag 'arm-ffa-updates-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers

Arm FF-A updates for v5.16

Just couple of minor updates:
- Adding support for MEMORY_LEND API
- Handling compatibility with different firmware versions(especially
  dealing with newer/higher versions than the one supported by the driver)

* tag 'arm-ffa-updates-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Remove unused 'compat_version' variable
  firmware: arm_ffa: Add support for MEM_LEND
  firmware: arm_ffa: Handle compatibility with different firmware versions
  firmware: arm_ffa: Fix __ffa_devices_unregister
  firmware: arm_ffa: Add missing remove callback to ffa_bus_type

Link: https://lore.kernel.org/r/20211026141535.1920602-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-10-26 17:19:06 +02:00
Arnd Bergmann
e2a3495bf9 More Qualcomm driver updates for v5.16
This introduces the Qualcomm "sleep stats" driver, which aids the
 efforts of bringing various Qualcomm platforms into low power mode.
 
 The SMP2P driver gains support for negotiating the "SSR" feature, which
 is used to better synchronize some corner cases that might appear as the
 remoteproc is recovering from a crash.
 
 The socinfo driver learns about a few new PMICs.
 
 SMEM is updated so that it's possible to put the compatible property
 directly in the reserved-memory node, to avoid having to have a separate
 node just pointing to the memory-region.
 
 Lastly it fixes some bugs in smp2p, apr, rpmhpd drivers, notably
 avoiding the issue where powering on a power-domain using rpmhpd while
 keeping the performance_state at 0 is a nop
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Merge tag 'qcom-drivers-for-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/drivers

More Qualcomm driver updates for v5.16

This introduces the Qualcomm "sleep stats" driver, which aids the
efforts of bringing various Qualcomm platforms into low power mode.

The SMP2P driver gains support for negotiating the "SSR" feature, which
is used to better synchronize some corner cases that might appear as the
remoteproc is recovering from a crash.

The socinfo driver learns about a few new PMICs.

SMEM is updated so that it's possible to put the compatible property
directly in the reserved-memory node, to avoid having to have a separate
node just pointing to the memory-region.

Lastly it fixes some bugs in smp2p, apr, rpmhpd drivers, notably
avoiding the issue where powering on a power-domain using rpmhpd while
keeping the performance_state at 0 is a nop

* tag 'qcom-drivers-for-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
  firmware: qcom: scm: Don't break compile test on non-ARM platforms
  soc: qcom: smp2p: Add of_node_put() before goto
  soc: qcom: apr: Add of_node_put() before return
  soc: qcom: qcom_stats: Fix client votes offset
  soc: qcom: rpmhpd: fix sm8350_mxc's peer domain
  dt-bindings: arm: cpus: Document qcom,msm8916-smp enable-method
  ARM: qcom: Add qcom,msm8916-smp enable-method identical to MSM8226
  firmware: qcom: scm: Add support for MC boot address API
  soc: qcom: spm: Add 8916 SPM register data
  dt-bindings: soc: qcom: spm: Document qcom,msm8916-saw2-v3.0-cpu
  soc: qcom: socinfo: Add PM8150C and SMB2351 models
  firmware: qcom_scm: Fix error retval in __qcom_scm_is_call_available()
  soc: qcom: smp2p: add feature negotiation and ssr ack feature support
  soc: qcom: Add Sleep stats driver
  dt-bindings: Introduce QCOM Sleep stats bindings
  soc: qcom: socinfo: add two missing PMIC IDs
  soc: qcom: rpmhpd: Make power_on actually enable the domain
  soc: qcom: smem: Support reserved-memory description
  dt-bindings: soc: smem: Make indirection optional
  dt-bindings: sram: Document qcom,rpm-msg-ram

Link: https://lore.kernel.org/r/20211026140706.1205989-1-bjorn.andersson@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-10-26 17:17:57 +02:00
Arnd Bergmann
01537a078b firmware: arm_ffa: Remove unused 'compat_version' variable
The newly added ffa_compatible_version_find() function causes a
build warning because of a variable that is never used:

drivers/firmware/arm_ffa/driver.c:180:6: error: unused variable 'compat_version' [-Werror,-Wunused-variable]
        u32 compat_version;

Link: https://lore.kernel.org/r/20211026083400.3444946-1-arnd@kernel.org
Fixes: 8e3f9da608 ("firmware: arm_ffa: Handle compatibility with different firmware versions")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-10-26 12:46:15 +01:00
Bjorn Andersson
c50031f03d firmware: qcom: scm: Don't break compile test on non-ARM platforms
The introduction of __qcom_scm_set_boot_addr_mc() relies on
cpu_logical_map() and MPIDR_AFFINITY_LEVEL() from smp_plat.h, but only
ARM and ARM64 has this include file, so the introduction of this
dependency broke compile testing on e.g. x86_64.

Make the inclusion of smp_plat.h and the affected function depend on
ARM || ARM64 to allow the code to still be compiled.

Fixes: 55845f46df ("firmware: qcom: scm: Add support for MC boot address API")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211025025816.2937465-1-bjorn.andersson@linaro.org
2021-10-25 14:21:34 -05:00
Stephan Gerhold
55845f46df firmware: qcom: scm: Add support for MC boot address API
It looks like the old QCOM_SCM_BOOT_SET_ADDR API is broken on some
MSM8916 firmware versions that implement the newer SMC32 calling
convention. It just returns -EINVAL no matter which arguments are
being passed.

This does not cause any problems downstream because it first tries
to use the new multi-cluster API replacement which is working fine.

Implement support for the multi-cluster variant of the SCM call
by attempting it first but still fallback to the old call in case
of an error. Also, to be absolutely sure only use the multi-cluster
variant with the SMC calling convention since older platforms should
not need this.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211004204955.21077-12-stephan@gerhold.net
2021-10-23 22:15:47 -05:00
Guru Das Srinagesh
38212b2a8a firmware: qcom_scm: Fix error retval in __qcom_scm_is_call_available()
Since __qcom_scm_is_call_available() returns bool, have it return false
instead of -EINVAL if an invalid SMC convention is detected.

This fixes the Smatch static checker warning:

	drivers/firmware/qcom_scm.c:255 __qcom_scm_is_call_available()
	warn: signedness bug returning '(-22)'

Fixes: 9d11af8b06 ("firmware: qcom_scm: Make __qcom_scm_is_call_available() return bool")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Guru Das Srinagesh <quic_gurus@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1633982414-28347-1-git-send-email-quic_gurus@quicinc.com
2021-10-23 22:12:18 -05:00
Lv Ruyi
711e26c00e firmware: tegra: Fix error application of sizeof() to pointer
Application of sizeof() to pointer yields the number of bytes of the
pointer, but it should use the length of buffer in the code.

Fixes: 06c2d9a078 ("firmware: tegra: Reduce stack usage")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-10-18 16:04:01 +02:00
Mark Brown
b8f3b56493 Linux 5.15-rc6
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Merge tag 'v5.15-rc6' into asoc-5.16

Linux 5.15-rc6
2021-10-18 13:50:42 +01:00
Marc Bonnici
82a8daaecf firmware: arm_ffa: Add support for MEM_LEND
As part of the FF-A spec, an endpoint is allowed to transfer access of,
or lend, a memory region to one or more borrowers.

Extend the existing memory sharing implementation to support
FF-A MEM_LEND functionality and expose this to other kernel drivers.

Note that upon a successful MEM_LEND request the caller must ensure that
the memory region specified is not accessed until a successful
MEM_RECALIM call has been made. On systems with a hypervisor present
this will been enforced, however on systems without a hypervisor the
responsibility falls to the calling kernel driver to prevent access.

Link: https://lore.kernel.org/r/20211015165742.2513065-1-marc.bonnici@arm.com
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-10-18 13:11:06 +01:00
Sudeep Holla
8e3f9da608 firmware: arm_ffa: Handle compatibility with different firmware versions
The driver currently just support v1.0 of Arm FFA specification. It also
expects the firmware implementation to match the same and bail out if it
doesn't match. This is causing issue when running with higher version of
firmware implementation(e.g. v1.1 which will released soon).

In order to support compatibility with different firmware versions, let
us add additional checks and find the compatible version the driver can
work with.

Link: https://lore.kernel.org/r/20211013091127.990992-1-sudeep.holla@arm.com
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-10-18 13:10:38 +01:00
Linus Torvalds
424e7d878c EFI fixes for v5.15
Low priority fixes but fixes nonetheless:
 - update stub diagnostic print that is no longer accurate
 - avoid statically allocated buffer for CPER error record decoding
 - avoid sleeping on the efi_runtime semaphore when calling the
   ResetSystem EFI runtime service
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Merge tag 'efi-urgent-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull EFI fixes from Borislav Petkov:
 "Forwarded from Ard Biesheuvel through the tip tree. Ard will send
  stuff directly in the near future.

  Low priority fixes but fixes nonetheless:

   - update stub diagnostic print that is no longer accurate

   - avoid statically allocated buffer for CPER error record decoding

   - avoid sleeping on the efi_runtime semaphore when calling the
     ResetSystem EFI runtime service"

* tag 'efi-urgent-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi: Change down_interruptible() in virt_efi_reset_system() to down_trylock()
  efi/cper: use stack buffer for error record decoding
  efi/libstub: Simplify "Exiting bootservices" message
2021-10-17 17:30:49 -10:00
Arnd Bergmann
936fc53f3d Qualcomm driver updates for v5.16
This drops the use of power-domains for exposing the load_state from the
 QMP driver to clients, to avoid issues related to system suspend.
 
 SMP2P becomes wakeup capable, to allow dying remoteprocs to wake up
 Linux from suspend to perform recovery.
 
 It adds RPM power-domain support for SM6350 and MSM8953 and base RPM
 support for MSM8953 and QCM2290.
 
 It adds support for MSM8996, SDM630 and SDM660 in the SPM driver, which
 will enable the introduction of proper voltage scaling of the CPU
 subsystem.
 
 Support for releasing secondary CPUs on MSM8226 is introduced.
 
 The Asynchronous Packet Router (APR) driver is extended to support the
 new Generic Packet Router (GPR) variant, which is used to communicate
 with the firmware in the new AudioReach audio driver.
 
 Lastly it transitions a number of drivers to safer string functions, as
 well as switching things to use devm_platform_ioremap_resource().
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Merge tag 'qcom-drivers-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/drivers

Qualcomm driver updates for v5.16

This drops the use of power-domains for exposing the load_state from the
QMP driver to clients, to avoid issues related to system suspend.

SMP2P becomes wakeup capable, to allow dying remoteprocs to wake up
Linux from suspend to perform recovery.

It adds RPM power-domain support for SM6350 and MSM8953 and base RPM
support for MSM8953 and QCM2290.

It adds support for MSM8996, SDM630 and SDM660 in the SPM driver, which
will enable the introduction of proper voltage scaling of the CPU
subsystem.

Support for releasing secondary CPUs on MSM8226 is introduced.

The Asynchronous Packet Router (APR) driver is extended to support the
new Generic Packet Router (GPR) variant, which is used to communicate
with the firmware in the new AudioReach audio driver.

Lastly it transitions a number of drivers to safer string functions, as
well as switching things to use devm_platform_ioremap_resource().

* tag 'qcom-drivers-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (40 commits)
  soc: qcom: apr: Add GPR support
  soc: dt-bindings: qcom: add gpr bindings
  soc: qcom: apr: make code more reuseable
  soc: dt-bindings: qcom: apr: deprecate qcom,apr-domain property
  soc: dt-bindings: qcom: apr: convert to yaml
  dt-bindings: soc: qcom: aoss: Delete unused power-domain definitions
  dt-bindings: msm/dp: Remove aoss-qmp header
  soc: qcom: aoss: Drop power domain support
  dt-bindings: soc: qcom: aoss: Drop the load state power-domain
  soc: qcom: smp2p: Add wakeup capability to SMP2P IRQ
  dt-bindings: power: rpmpd: Add SM6350 to rpmpd binding
  dt-bindings: soc: qcom: aoss: Add SM6350 compatible
  soc: qcom: llcc: Disable MMUHWT retention
  soc: qcom: smd-rpm: Add QCM2290 compatible
  dt-bindings: soc: qcom: smd-rpm: Add QCM2290 compatible
  firmware: qcom_scm: Add compatible for MSM8953 SoC
  dt-bindings: firmware: qcom-scm: Document msm8953 bindings
  soc: qcom: pdr: Prefer strscpy over strcpy
  soc: qcom: rpmh-rsc: Make use of the helper function devm_platform_ioremap_resource_byname()
  soc: qcom: gsbi: Make use of the helper function devm_platform_ioremap_resource()
  ...

Link: https://lore.kernel.org/r/20211012173442.1017010-1-bjorn.andersson@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-10-13 22:34:43 +02:00
Arnd Bergmann
209ee634bc Arm FF-A driver fixes for v5.15
Couple of fixes addressing issues when FFA driver is build as a module.
 One adds the device unregistration which was missing and causes issue
 when loading the module second time after unloading once. Another one
 adds the missing remove callback on the ffa bus which was missing due
 to which modules depending on FFA(e.g. OPTEE) will fail to remove the
 device and faults next time that module is loaded again.
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Merge tag 'ffa-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

Arm FF-A driver fixes for v5.15

Couple of fixes addressing issues when FFA driver is build as a module.
One adds the device unregistration which was missing and causes issue
when loading the module second time after unloading once. Another one
adds the missing remove callback on the ffa bus which was missing due
to which modules depending on FFA(e.g. OPTEE) will fail to remove the
device and faults next time that module is loaded again.

* tag 'ffa-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Fix __ffa_devices_unregister
  firmware: arm_ffa: Add missing remove callback to ffa_bus_type

Link: https://lore.kernel.org/r/20211006153231.4061789-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-10-11 10:04:25 +02:00
Linus Torvalds
0dcf60d001 asm-generic: build fixes for v5.15
There is one build fix for Arm platforms that ended up impacting most
 architectures because of the way the drivers/firmware Kconfig file is
 wired up:
 
 The CONFIG_QCOM_SCM dependency have caused a number of randconfig
 regressions over time, and some still remain in v5.15-rc4. The
 fix we agreed on in the end is to make this symbol selected by any
 driver using it, and then building it even for non-Arm platforms with
 CONFIG_COMPILE_TEST.
 
 To make this work on all architectures, the drivers/firmware/Kconfig
 file needs to be included for all architectures to make the symbol
 itself visible.
 
 In a separate discussion, we found that a sound driver patch that is
 pending for v5.16 needs the same change to include this Kconfig file,
 so the easiest solution seems to have my Kconfig rework included in v5.15.
 
 There is a small merge conflict against an earlier partial fix for the
 QCOM_SCM dependency problems.
 
 Finally, the branch also includes a small unrelated build fix for NOMMU
 architectures.
 
 Link: https://lore.kernel.org/all/20210928153508.101208f8@canb.auug.org.au/
 Link: https://lore.kernel.org/all/20210928075216.4193128-1-arnd@kernel.org/
 Link: https://lore.kernel.org/all/20211007151010.333516-1-arnd@kernel.org/
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic fixes from Arnd Bergmann:
 "There is one build fix for Arm platforms that ended up impacting most
  architectures because of the way the drivers/firmware Kconfig file is
  wired up:

  The CONFIG_QCOM_SCM dependency have caused a number of randconfig
  regressions over time, and some still remain in v5.15-rc4. The fix we
  agreed on in the end is to make this symbol selected by any driver
  using it, and then building it even for non-Arm platforms with
  CONFIG_COMPILE_TEST.

  To make this work on all architectures, the drivers/firmware/Kconfig
  file needs to be included for all architectures to make the symbol
  itself visible.

  In a separate discussion, we found that a sound driver patch that is
  pending for v5.16 needs the same change to include this Kconfig file,
  so the easiest solution seems to have my Kconfig rework included in
  v5.15.

  Finally, the branch also includes a small unrelated build fix for
  NOMMU architectures"

Link: https://lore.kernel.org/all/20210928153508.101208f8@canb.auug.org.au/
Link: https://lore.kernel.org/all/20210928075216.4193128-1-arnd@kernel.org/
Link: https://lore.kernel.org/all/20211007151010.333516-1-arnd@kernel.org/

* tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic/io.h: give stub iounmap() on !MMU same prototype as elsewhere
  qcom_scm: hide Kconfig symbol
  firmware: include drivers/firmware/Kconfig unconditionally
2021-10-08 11:57:54 -07:00
Arnd Bergmann
6aaa843438 SCMI fixes for v5.15
A few fixes addressing:
 - Kconfig dependency between VIRTIO and ARM_SCMI_PROTOCOL
 - Link-time error with __exit annotation for virtio_scmi_exit
 - Unnecessary nested irqsave/irqrestore spinlocks in virtio transport
 - Missing SMP barriers to protect accesses to SCMI virtio device
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Merge tag 'scmi-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

SCMI fixes for v5.15

A few fixes addressing:
- Kconfig dependency between VIRTIO and ARM_SCMI_PROTOCOL
- Link-time error with __exit annotation for virtio_scmi_exit
- Unnecessary nested irqsave/irqrestore spinlocks in virtio transport
- Missing SMP barriers to protect accesses to SCMI virtio device

* tag 'scmi-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Add proper barriers to scmi virtio device
  firmware: arm_scmi: Simplify spinlocks in virtio transport
  firmware: arm_scmi: Remove __exit annotation
  firmware: arm_scmi: Fix virtio transport Kconfig dependency

Link: https://lore.kernel.org/r/20211007102822.27886-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-10-07 21:14:04 +02:00
Cai Huoqing
f11c34bddf firmware: tegra: bpmp: Use devm_platform_ioremap_resource()
Use the devm_platform_ioremap_resource() helper instead of calling
platform_get_resource() and devm_ioremap_resource() separately.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-10-07 20:52:24 +02:00
Arnd Bergmann
06c2d9a078 firmware: tegra: Reduce stack usage
Building the bpmp-debugfs driver for Arm results in a warning for stack usage:

drivers/firmware/tegra/bpmp-debugfs.c:321:16: error: stack frame size of 1224 bytes in function 'bpmp_debug_store' [-Werror,-Wframe-larger-than=]
static ssize_t bpmp_debug_store(struct file *file, const char __user *buf,

It should be possible to rearrange the code to not require two separate
buffers for the file name, but the easiest workaround is to use dynamic
allocation.

Fixes: 5e37b9c137 ("firmware: tegra: Add support for in-band debug")
Link: https://lore.kernel.org/all/20201204193714.3134651-1-arnd@kernel.org/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[treding@nvidia.com: consistently return NULL on failure]
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-10-07 20:52:17 +02:00
Arnd Bergmann
424953cf3c qcom_scm: hide Kconfig symbol
Now that SCM can be a loadable module, we have to add another
dependency to avoid link failures when ipa or adreno-gpu are
built-in:

aarch64-linux-ld: drivers/net/ipa/ipa_main.o: in function `ipa_probe':
ipa_main.c:(.text+0xfc4): undefined reference to `qcom_scm_is_available'

ld.lld: error: undefined symbol: qcom_scm_is_available
>>> referenced by adreno_gpu.c
>>>               gpu/drm/msm/adreno/adreno_gpu.o:(adreno_zap_shader_load) in archive drivers/built-in.a

This can happen when CONFIG_ARCH_QCOM is disabled and we don't select
QCOM_MDT_LOADER, but some other module selects QCOM_SCM. Ideally we'd
use a similar dependency here to what we have for QCOM_RPROC_COMMON,
but that causes dependency loops from other things selecting QCOM_SCM.

This appears to be an endless problem, so try something different this
time:

 - CONFIG_QCOM_SCM becomes a hidden symbol that nothing 'depends on'
   but that is simply selected by all of its users

 - All the stubs in include/linux/qcom_scm.h can go away

 - arm-smccc.h needs to provide a stub for __arm_smccc_smc() to
   allow compile-testing QCOM_SCM on all architectures.

 - To avoid a circular dependency chain involving RESET_CONTROLLER
   and PINCTRL_SUNXI, drop the 'select RESET_CONTROLLER' statement.
   According to my testing this still builds fine, and the QCOM
   platform selects this symbol already.

Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Alex Elder <elder@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-10-07 16:51:57 +02:00
Cristian Marussi
bf1acf809d firmware: arm_scmi: Add proper barriers to scmi virtio device
Only one single SCMI Virtio device is currently supported by this driver
and it is referenced using a static global variable which is initialized
once for all during probing and nullified at virtio device removal.

Add proper SMP barriers to protect accesses to such device reference to
ensure that the initialzation state of such device is correctly observed by
all PEs at any time.

Return -EBUSY, instead of -EINVAL, and a descriptive error message if more
than one SCMI Virtio device is ever found and probed.

Link: https://lore.kernel.org/r/20210916103336.7243-3-cristian.marussi@arm.com
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-10-06 11:12:45 +01:00
Cristian Marussi
a14a14595d firmware: arm_scmi: Simplify spinlocks in virtio transport
Remove unneeded nested irqsave/irqrestore spinlocks.
Add also a few descriptive comments to explain better the system behaviour
at shutdown time.

Link: https://lore.kernel.org/r/20210916103336.7243-2-cristian.marussi@arm.com
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-10-06 11:12:44 +01:00
Zhang Jianhua
38fa3206bf efi: Change down_interruptible() in virt_efi_reset_system() to down_trylock()
While reboot the system by sysrq, the following bug will be occur.

BUG: sleeping function called from invalid context at kernel/locking/semaphore.c:90
in_atomic(): 0, irqs_disabled(): 128, non_block: 0, pid: 10052, name: rc.shutdown
CPU: 3 PID: 10052 Comm: rc.shutdown Tainted: G        W O      5.10.0 #1
Call trace:
 dump_backtrace+0x0/0x1c8
 show_stack+0x18/0x28
 dump_stack+0xd0/0x110
 ___might_sleep+0x14c/0x160
 __might_sleep+0x74/0x88
 down_interruptible+0x40/0x118
 virt_efi_reset_system+0x3c/0xd0
 efi_reboot+0xd4/0x11c
 machine_restart+0x60/0x9c
 emergency_restart+0x1c/0x2c
 sysrq_handle_reboot+0x1c/0x2c
 __handle_sysrq+0xd0/0x194
 write_sysrq_trigger+0xbc/0xe4
 proc_reg_write+0xd4/0xf0
 vfs_write+0xa8/0x148
 ksys_write+0x6c/0xd8
 __arm64_sys_write+0x18/0x28
 el0_svc_common.constprop.3+0xe4/0x16c
 do_el0_svc+0x1c/0x2c
 el0_svc+0x20/0x30
 el0_sync_handler+0x80/0x17c
 el0_sync+0x158/0x180

The reason for this problem is that irq has been disabled in
machine_restart() and then it calls down_interruptible() in
virt_efi_reset_system(), which would occur sleep in irq context,
it is dangerous! Commit 99409b935c9a("locking/semaphore: Add
might_sleep() to down_*() family") add might_sleep() in
down_interruptible(), so the bug info is here. down_trylock()
can solve this problem, cause there is no might_sleep.

--------

Cc: <stable@vger.kernel.org>
Signed-off-by: Zhang Jianhua <chris.zjh@huawei.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-10-05 13:07:01 +02:00
Ard Biesheuvel
b3a72ca803 efi/cper: use stack buffer for error record decoding
Joe reports that using a statically allocated buffer for converting CPER
error records into human readable text is probably a bad idea. Even
though we are not aware of any actual issues, a stack buffer is clearly
a better choice here anyway, so let's move the buffer into the stack
frames of the two functions that refer to it.

Cc: <stable@vger.kernel.org>
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-10-05 13:05:59 +02:00
Heinrich Schuchardt
68c9cdf37a efi/libstub: Simplify "Exiting bootservices" message
The message

    "Exiting boot services and installing virtual address map...\n"

is even shown if we have efi=novamap on the command line or the firmware
does not provide EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP.

To avoid confusion just print

    "Exiting boot services...\n"

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-10-05 13:05:58 +02:00
Sudeep Holla
eb7b52e6db firmware: arm_ffa: Fix __ffa_devices_unregister
When arm_ffa firmware driver module is unloaded or removed we call
__ffa_devices_unregister on all the devices on the ffa bus. It must
unregister all the devices instead it is currently just releasing the
devices without unregistering. That is pure wrong as when we try to
load the module back again, it will result in the kernel crash something
like below.

-->8
 CPU: 2 PID: 232 Comm: modprobe Not tainted 5.15.0-rc2+ #169
 Hardware name: FVP Base RevC (DT)
 Call trace:
  dump_backtrace+0x0/0x1cc
  show_stack+0x18/0x64
  dump_stack_lvl+0x64/0x7c
  dump_stack+0x18/0x38
  sysfs_create_dir_ns+0xe4/0x140
  kobject_add_internal+0x170/0x358
  kobject_add+0x94/0x100
  device_add+0x178/0x5f0
  device_register+0x20/0x30
  ffa_device_register+0x80/0xcc [ffa_module]
  ffa_setup_partitions+0x7c/0x108 [ffa_module]
  init_module+0x290/0x2dc [ffa_module]
  do_one_initcall+0xbc/0x230
  do_init_module+0x58/0x304
  load_module+0x15e0/0x1f68
  __arm64_sys_finit_module+0xb8/0xf4
  invoke_syscall+0x44/0x140
  el0_svc_common+0xb4/0xf0
  do_el0_svc+0x24/0x80
  el0_svc+0x20/0x50
  el0t_64_sync_handler+0x84/0xe4
  el0t_64_sync+0x1a0/0x1a4
 kobject_add_internal failed for arm-ffa-8001 with -EEXIST, don't try to
 register things with the same name in the same directory.
----

Fix the issue by calling device_unregister in __ffa_devices_unregister
which will also take care of calling device_release(which is mapped to
ffa_release_device)

Link: https://lore.kernel.org/r/20210924092859.3057562-2-sudeep.holla@arm.com
Fixes: e781858488 ("firmware: arm_ffa: Add initial FFA bus support for device enumeration")
Tested-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-10-05 10:39:47 +01:00
Sudeep Holla
244f5d597e firmware: arm_ffa: Add missing remove callback to ffa_bus_type
Currently the arm_ffa firmware driver can be built as module and hence
all the users of FFA driver. If any driver on the ffa bus is removed or
unregistered, the remove callback on all the device bound to the driver
being removed should be callback. For that to happen, we must register
a remove callback on the ffa_bus which is currently missing. This results
in the probe getting called again without the previous remove callback
on a device which may result in kernel crash.

Fix the issue by registering the remove callback on the FFA bus.

Link: https://lore.kernel.org/r/20210924092859.3057562-1-sudeep.holla@arm.com
Fixes: e781858488 ("firmware: arm_ffa: Add initial FFA bus support for device enumeration")
Reported-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-10-05 10:39:46 +01:00
Sai Krishna Potthuri
74e78adc6c
firmware: xilinx: Add OSPI Mux selection support
Add OSPI Mux selection API support to select the AXI interface to OSPI.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Link: https://lore.kernel.org/r/1632478031-12242-2-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-10-01 20:50:49 +01:00
Sebastian Andrzej Siewior
720dff78de efi: Allow efi=runtime
In case the command line option "efi=noruntime" is default at built-time, the user
could overwrite its state by `efi=runtime' and allow it again.

This is useful on PREEMPT_RT where "efi=noruntime" is default and the
user might need to alter the boot order for instance.

Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-09-28 22:44:15 +02:00
Sebastian Andrzej Siewior
d9f283ae71 efi: Disable runtime services on RT
Based on measurements the EFI functions get_variable /
get_next_variable take up to 2us which looks okay.
The functions get_time, set_time take around 10ms. These 10ms are too
much. Even one ms would be too much.
Ard mentioned that SetVariable might even trigger larger latencies if
the firmware will erase flash blocks on NOR.

The time-functions are used by efi-rtc and can be triggered during
run-time (either via explicit read/write or ntp sync).

The variable write could be used by pstore.
These functions can be disabled without much of a loss. The poweroff /
reboot hooks may be provided by PSCI.

Disable EFI's runtime wrappers on PREEMPT_RT.

This was observed on "EFI v2.60 by SoftIron Overdrive 1000".

Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-09-28 22:43:53 +02:00
Simon Trimmer
f6bc909e76
firmware: cs_dsp: add driver to support firmware loading on Cirrus Logic DSPs
wm_adsp originally provided firmware loading on some audio DSP and was
implemented as an ASoC codec driver. However, the firmware loading now
covers a wider range of DSP cores and peripherals containing them,
beyond just audio. So it needs to be available to non-audio drivers. All
the core firmware loading support has been moved into a new driver
cs_dsp, leaving only the ASoC-specific parts in wm_adsp.

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210913160057.103842-17-simont@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-09-27 13:00:42 +01:00
Piyush Mehta
23c64d7618 firmware: zynqmp: Add MMIO read and write support for PS_MODE pin
Add Xilinx ZynqMP firmware MMIO APIs support to set and get PS_MODE
pins value and status. These APIs create an interface path between
mode pin controller driver and low-level API to access GPIO pins.

Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2021-09-23 10:09:37 +02:00
Vladimir Lypak
bca4392a1a firmware: qcom_scm: Add compatible for MSM8953 SoC
Add compatible for SCM on MSM8953.

Signed-off-by: Vladimir Lypak <junak.pub@gmail.com>
Signed-off-by: Sireesh Kodali <sireeshkodali@protonmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210810164347.45578-5-sireeshkodali@protonmail.com
2021-09-21 17:41:49 -05:00
Arnd Bergmann
1cd73200da firmware: arm_scmi: Remove __exit annotation
virtio_scmi_exit() is only called from __exit function, so the annotation
is correct, but when the driver is built-in, the section gets discarded
and the reference from a callback pointer causes a link-time error:

`virtio_scmi_exit' referenced in section `.rodata' of drivers/firmware/arm_scmi/virtio.o:
	defined in discarded section `.exit.text' of drivers/firmware/arm_scmi/virtio.o

I could not figure out a better workaround, so let's just remove that
annotation even if it wastes a couple of bytes in .text.

Link: https://lore.kernel.org/r/20210920100301.1466486-2-arnd@kernel.org
Fixes: 46abe13b5e ("firmware: arm_scmi: Add virtio transport")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-09-20 12:01:54 +01:00
Cristian Marussi
c90521a0e9 firmware: arm_scmi: Fix virtio transport Kconfig dependency
ARM_SCMI_TRANSPORT_VIRTIO is a 'bool' Kconfig used to include support for
the SCMI virtio transport inside the core SCMI stack; a bare transport
dependency attached here to this option, though, cannot be properly
propagated to the parent ARM_SCMI_PROTOCOL option and, as a result, it is
currently possible to configure a Kernel where SCMI core is builtin
and includes support for virtio while VirtIO core is =m.
This allowed combination breaks linking:

	ARM_SCMI_PROTOCOL=y
	ARM_SCMI_TRANSPORT_VIRTIO=y
	VIRTIO=m

Bind the dependency in ARM_SCMI_TRANSPORT_VIRTIO to the chosen kind of
compilation of ARM_SCMI_PROTOCOL.

Link: https://lore.kernel.org/r/20210816141609.41751-1-cristian.marussi@arm.com
Fixes: 46abe13b5e ("firmware: arm_scmi: Add virtio transport")
Reported-by: kernel test robot <lkp@intel.com>
Suggested-by: Arnd Bergmann <arnd@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-09-20 11:50:57 +01:00
Geert Uytterhoeven
4382c73a12 firmware: qcom_scm: QCOM_SCM should depend on ARCH_QCOM
The Qualcomm Secure Channel Manager (SCM) is only present on Qualcomm
SoCs.  All drivers using it select QCOM_SCM, and depend on ARCH_QCOM.
Until recently, QCOM_SCM was an invisible symbol, but this was changed
by adding loadable module support, exposing it to all ARM and ARM64
users.  Hence add a dependency on ARCH_QCOM, to prevent asking the user
about this driver when configuring a kernel without Qualcomm SoC
support.

While at it, drop the dependency on ARM || ARM64, as that is implied by
HAVE_ARM_SMCCC.

Fixes: b42000e4b8 ("firmware: qcom_scm: Allow qcom_scm driver to be loadable as a permenent module")
Fixes: 2954a6f12f ("firmware: qcom-scm: Fix QCOM_SCM configuration")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/5cda77085c07dc2e8d2195507b287457cb2f09e9.1629807831.git.geert+renesas@glider.be
2021-09-19 19:58:19 -05:00
Linus Torvalds
dd4703876e - Add the tegra3 thermal sensor and fix the compilation testing on
tegra by adding a dependency on ARCH_TEGRA along with COMPILE_TEST
   (Dmitry Osipenko)
 
 - Fix the error code for the exynos when devm_get_clk() fails (Dan
   Carpenter)
 
 - Add the TCC cooling support for AlderLake platform (Sumeet Pawnikar)
 
 - Add support for hardware trip points for the rcar gen3 thermal
   driver and store TSC id as unsigned int (Niklas Söderlund)
 
 - Replace the deprecated CPU-hotplug functions get_online_cpus() and
   put_online_cpus (Sebastian Andrzej Siewior)
 
 - Add the thermal tools directory in the MAINTAINERS file (Daniel
   Lezcano)
 
 - Fix the Makefile and the cross compilation flags for the userspace
   'tmon' tool (Rolf Eike Beer)
 
 - Allow to use the IMOK independently from the GDDV on Int340x (Sumeet
   Pawnikar)
 
 - Fix the stub thermal_cooling_device_register() function prototype
   which does not match the real function (Arnd Bergmann)
 
 - Make the thermal trip point optional in the DT bindings (Maxime
   Ripard)
 
 - Fix a typo in a comment in the core code (Geert Uytterhoeven)
 
 - Reduce the verbosity of the trace in the SoC thermal tegra driver
   (Dmitry Osipenko)
 
 - Add the support for the LMh (Limit Management hardware) driver on
   the QCom platforms (Thara Gopinath)
 
 - Allow processing of HWP interrupt by adding a weak function in the
   Intel driver (Srinivas Pandruvada)
 
 - Prevent an abort of the sensor probe is a channel is not used
   (Matthias Kaehlcke)
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Merge tag 'thermal-v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux

Pull thermal updates from Daniel Lezcano:

 - Add the tegra3 thermal sensor and fix the compilation testing on
   tegra by adding a dependency on ARCH_TEGRA along with COMPILE_TEST
   (Dmitry Osipenko)

 - Fix the error code for the exynos when devm_get_clk() fails (Dan
   Carpenter)

 - Add the TCC cooling support for AlderLake platform (Sumeet Pawnikar)

 - Add support for hardware trip points for the rcar gen3 thermal driver
   and store TSC id as unsigned int (Niklas Söderlund)

 - Replace the deprecated CPU-hotplug functions get_online_cpus() and
   put_online_cpus (Sebastian Andrzej Siewior)

 - Add the thermal tools directory in the MAINTAINERS file (Daniel
   Lezcano)

 - Fix the Makefile and the cross compilation flags for the userspace
   'tmon' tool (Rolf Eike Beer)

 - Allow to use the IMOK independently from the GDDV on Int340x (Sumeet
   Pawnikar)

 - Fix the stub thermal_cooling_device_register() function prototype
   which does not match the real function (Arnd Bergmann)

 - Make the thermal trip point optional in the DT bindings (Maxime
   Ripard)

 - Fix a typo in a comment in the core code (Geert Uytterhoeven)

 - Reduce the verbosity of the trace in the SoC thermal tegra driver
   (Dmitry Osipenko)

 - Add the support for the LMh (Limit Management hardware) driver on the
   QCom platforms (Thara Gopinath)

 - Allow processing of HWP interrupt by adding a weak function in the
   Intel driver (Srinivas Pandruvada)

 - Prevent an abort of the sensor probe is a channel is not used
   (Matthias Kaehlcke)

* tag 'thermal-v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
  thermal/drivers/qcom/spmi-adc-tm5: Don't abort probing if a sensor is not used
  thermal/drivers/intel: Allow processing of HWP interrupt
  dt-bindings: thermal: Add dt binding for QCOM LMh
  thermal/drivers/qcom: Add support for LMh driver
  firmware: qcom_scm: Introduce SCM calls to access LMh
  thermal/drivers/tegra-soctherm: Silence message about clamped temperature
  thermal: Spelling s/scallbacks/callbacks/
  dt-bindings: thermal: Make trips node optional
  thermal/core: Fix thermal_cooling_device_register() prototype
  thermal/drivers/int340x: Use IMOK independently
  tools/thermal/tmon: Add cross compiling support
  thermal/tools/tmon: Improve the Makefile
  MAINTAINERS: Add missing userspace thermal tools to the thermal section
  thermal/drivers/intel_powerclamp: Replace deprecated CPU-hotplug functions.
  thermal/drivers/rcar_gen3_thermal: Store TSC id as unsigned int
  thermal/drivers/rcar_gen3_thermal: Add support for hardware trip points
  drivers/thermal/intel: Add TCC cooling support for AlderLake platform
  thermal/drivers/exynos: Fix an error code in exynos_tmu_probe()
  thermal/drivers/tegra: Correct compile-testing of drivers
  thermal/drivers/tegra: Add driver for Tegra30 thermal sensor
2021-09-11 09:20:57 -07:00
Linus Torvalds
a2b2823533 Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull dmi fix from Jean Delvare.

Unbreak some existing udev/hwdb modalias matches due to misplaced
product_sku field.

* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  firmware: dmi: Move product_sku info to the end of the modalias
2021-09-07 13:08:08 -07:00
Linus Torvalds
b250e6d141 Kbuild updates for v5.15
- Add -s option (strict mode) to merge_config.sh to make it fail when
    any symbol is redefined.
 
  - Show a warning if a different compiler is used for building external
    modules.
 
  - Infer --target from ARCH for CC=clang to let you cross-compile the
    kernel without CROSS_COMPILE.
 
  - Make the integrated assembler default (LLVM_IAS=1) for CC=clang.
 
  - Add <linux/stdarg.h> to the kernel source instead of borrowing
    <stdarg.h> from the compiler.
 
  - Add Nick Desaulniers as a Kbuild reviewer.
 
  - Drop stale cc-option tests.
 
  - Fix the combination of CONFIG_TRIM_UNUSED_KSYMS and CONFIG_LTO_CLANG
    to handle symbols in inline assembly.
 
  - Show a warning if 'FORCE' is missing for if_changed rules.
 
  - Various cleanups
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Merge tag 'kbuild-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Add -s option (strict mode) to merge_config.sh to make it fail when
   any symbol is redefined.

 - Show a warning if a different compiler is used for building external
   modules.

 - Infer --target from ARCH for CC=clang to let you cross-compile the
   kernel without CROSS_COMPILE.

 - Make the integrated assembler default (LLVM_IAS=1) for CC=clang.

 - Add <linux/stdarg.h> to the kernel source instead of borrowing
   <stdarg.h> from the compiler.

 - Add Nick Desaulniers as a Kbuild reviewer.

 - Drop stale cc-option tests.

 - Fix the combination of CONFIG_TRIM_UNUSED_KSYMS and CONFIG_LTO_CLANG
   to handle symbols in inline assembly.

 - Show a warning if 'FORCE' is missing for if_changed rules.

 - Various cleanups

* tag 'kbuild-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (39 commits)
  kbuild: redo fake deps at include/ksym/*.h
  kbuild: clean up objtool_args slightly
  modpost: get the *.mod file path more simply
  checkkconfigsymbols.py: Fix the '--ignore' option
  kbuild: merge vmlinux_link() between ARCH=um and other architectures
  kbuild: do not remove 'linux' link in scripts/link-vmlinux.sh
  kbuild: merge vmlinux_link() between the ordinary link and Clang LTO
  kbuild: remove stale *.symversions
  kbuild: remove unused quiet_cmd_update_lto_symversions
  gen_compile_commands: extract compiler command from a series of commands
  x86: remove cc-option-yn test for -mtune=
  arc: replace cc-option-yn uses with cc-option
  s390: replace cc-option-yn uses with cc-option
  ia64: move core-y in arch/ia64/Makefile to arch/ia64/Kbuild
  sparc: move the install rule to arch/sparc/Makefile
  security: remove unneeded subdir-$(CONFIG_...)
  kbuild: sh: remove unused install script
  kbuild: Fix 'no symbols' warning when CONFIG_TRIM_UNUSD_KSYMS=y
  kbuild: Switch to 'f' variants of integrated assembler flag
  kbuild: Shuffle blank line to improve comment meaning
  ...
2021-09-03 15:33:47 -07:00
Konrad Rzeszutek Wilk
8b7084b848 Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft into HEAD
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft:
  iscsi_ibft: Fix isa_bus_to_virt not working under ARM
2021-09-03 11:57:31 -04:00
Konrad Rzeszutek Wilk
799206c130 iscsi_ibft: Fix isa_bus_to_virt not working under ARM
The isa_bus_to_virt is only needed under X86 and in fact the code
that sets the ibft_phys_addr is only compiled under X86.

As such lets just ifdef the code.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Vijayendra Suman <vijayendra.suman@oracle.com>
CC: Maurizio Lombardi <mlombard@redhat.com>
CC: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
v2: Remove the ibft_phys_addr as it is defined in iscsi_ibft.h
2021-09-02 16:22:00 -04:00
Hans de Goede
f97a2103f1 firmware: dmi: Move product_sku info to the end of the modalias
Commit e26f023e01 ("firmware/dmi: Include product_sku info to modalias")
added a new field to the modalias in the middle of the modalias, breaking
some existing udev/hwdb matches on the whole modalias without a wildcard
('*') in between the pvr and rvn fields.

All modalias matches in e.g. :
https://github.com/systemd/systemd/blob/main/hwdb.d/60-sensor.hwdb
deliberately end in ':*' so that new fields can be added at *the end* of
the modalias, but adding a new field in the middle like this breaks things.

Move the new sku field to the end of the modalias to fix some hwdb
entries no longer matching.

The new sku field has already been put to use in 2 new hwdb entries:

 sensor:modalias:platform:HID-SENSOR-200073:dmi:*svnDell*:sku0A3E:*
  ACCEL_LOCATION=base

 sensor:modalias:platform:HID-SENSOR-200073:dmi:*svnDell*:sku0B0B:*
  ACCEL_LOCATION=base

The wildcard use before and after the sku in these matches means that they
should keep working with the sku moved to the end.

Note that there is a second instance of in essence the same problem,
commit f5152f4ded ("firmware/dmi: Report DMI Bios & EC firmware release")

Added 2 new br and efr fields in the middle of the modalias. This too
breaks some hwdb modalias matches, but this has gone unnoticed for over
a year. So some newer hwdb modalias matches actually depend on these
fields being in the middle of the string. Moving these to the end now
would break 3 hwdb entries, while fixing 8 entries.

Since there is no good answer for the new br and efr fields I have chosen
to leave these as is. Instead I'll submit a hwdb update to put a wildcard
at the place where these fields may or may not be present depending on the
kernel version.

BugLink: https://github.com/systemd/systemd/issues/20550
Link: https://github.com/systemd/systemd/pull/20562
Fixes: e26f023e01 ("firmware/dmi: Include product_sku info to modalias")
Cc: stable@vger.kernel.org
Cc: Kai-Chuan Hsieh <kaichuan.hsieh@canonical.com>
Cc: Erwan Velu <e.velu@criteo.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
2021-09-02 17:28:53 +02:00
Linus Torvalds
866147b8fa ARM: SoC drivers for 5.15
These are updates for drivers that are tied to a particular SoC,
 including the correspondig device tree bindings:
 
  - A couple of reset controller changes for unisoc, uniphier, renesas
    and zte platforms
 
  - memory controller driver fixes for omap and tegra
 
  - Rockchip io domain driver updates
 
  - Lots of updates for qualcomm platforms, mostly touching their
    firmware and power management drivers
 
  - Tegra FUSE and firmware driver updateѕ
 
  - Support for virtio transports in the SCMI firmware framework
 
  - cleanup of ixp4xx drivers, towards enabling multiplatform
    support and bringing it up to date with modern platforms
 
  - Minor updates for keystone, mediatek, omap, renesas.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'drivers-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are updates for drivers that are tied to a particular SoC,
  including the correspondig device tree bindings:

   - A couple of reset controller changes for unisoc, uniphier, renesas
     and zte platforms

   - memory controller driver fixes for omap and tegra

   - Rockchip io domain driver updates

   - Lots of updates for qualcomm platforms, mostly touching their
     firmware and power management drivers

   - Tegra FUSE and firmware driver updateѕ

   - Support for virtio transports in the SCMI firmware framework

   - cleanup of ixp4xx drivers, towards enabling multiplatform support
     and bringing it up to date with modern platforms

   - Minor updates for keystone, mediatek, omap, renesas"

* tag 'drivers-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (96 commits)
  reset: simple: remove ZTE details in Kconfig help
  soc: rockchip: io-domain: Remove unneeded semicolon
  soc: rockchip: io-domain: add rk3568 support
  dt-bindings: power: add rk3568-pmu-io-domain support
  bus: ixp4xx: return on error in ixp4xx_exp_probe()
  soc: renesas: Prefer memcpy() over strcpy()
  firmware: tegra: Stop using seq_get_buf()
  soc/tegra: fuse: Enable fuse clock on suspend for Tegra124
  soc/tegra: fuse: Add runtime PM support
  soc/tegra: fuse: Clear fuse->clk on driver probe failure
  soc/tegra: pmc: Prevent racing with cpuilde driver
  soc/tegra: bpmp: Remove unused including <linux/version.h>
  dt-bindings: soc: ti: pruss: Add dma-coherent property
  soc: ti: Remove pm_runtime_irq_safe() usage for smartreflex
  soc: ti: pruss: Enable support for ICSSG subsystems on K3 AM64x SoCs
  dt-bindings: soc: ti: pruss: Update bindings for K3 AM64x SoCs
  firmware: arm_scmi: Use WARN_ON() to check configured transports
  firmware: arm_scmi: Fix boolconv.cocci warnings
  soc: mediatek: mmsys: Fix missing UFOE component in mt8173 table routing
  soc: mediatek: mmsys: add MT8365 support
  ...
2021-09-01 15:25:28 -07:00
Linus Torvalds
477f70cd2a drm for v5.15-rc1
core:
 - extract i915 eDP backlight into core
 - DP aux bus support
 - drm_device.irq_enabled removed
 - port drivers to native irq interfaces
 - export gem shadow plane handling for vgem
 - print proper driver name in framebuffer registration
 - driver fixes for implicit fencing rules
 - ARM fixed rate compression modifier added
 - updated fb damage handling
 - rmfb ioctl logging/docs
 - drop drm_gem_object_put_locked
 - define DRM_FORMAT_MAX_PLANES
 - add gem fb vmap/vunmap helpers
 - add lockdep_assert(once) helpers
 - mark drm irq midlayer as legacy
 - use offset adjusted bo mapping conversion
 
 vgaarb:
 - cleanups
 
 fbdev:
 - extend efifb handling to all arches
 - div by 0 fixes for multiple drivers
 
 udmabuf:
 - add hugepage mapping support
 
 dma-buf:
 - non-dynamic exporter fixups
 - document implicit fencing rules
 
 amdgpu:
 - Initial Cyan Skillfish support
 - switch virtual DCE over to vkms based atomic
 - VCN/JPEG power down fixes
 - NAVI PCIE link handling fixes
 - AMD HDMI freesync fixes
 - Yellow Carp + Beige Goby fixes
 - Clockgating/S0ix/SMU/EEPROM fixes
 - embed hw fence in job
 - rework dma-resv handling
 - ensure eviction to system ram
 
 amdkfd:
 - uapi: SVM address range query added
 - sysfs leak fix
 - GPUVM TLB optimizations
 - vmfault/migration counters
 
 i915:
 - Enable JSL and EHL by default
 - preliminary XeHP/DG2 support
 - remove all CNL support (never shipped)
 - move to TTM for discrete memory support
 - allow mixed object mmap handling
 - GEM uAPI spring cleaning
   - add I915_MMAP_OBJECT_FIXED
   - reinstate ADL-P mmap ioctls
   - drop a bunch of unused by userspace features
   - disable and remove GPU relocations
 - revert some i915 misfeatures
 - major refactoring of GuC for Gen11+
 - execbuffer object locking separate step
 - reject caching/set-domain on discrete
 - Enable pipe DMC loading on XE-LPD and ADL-P
 - add PSF GV point support
 - Refactor and fix DDI buffer translations
 - Clean up FBC CFB allocation code
 - Finish INTEL_GEN() and friends macro conversions
 
 nouveau:
 - add eDP backlight support
 - implicit fence fix
 
 msm:
 - a680/7c3 support
 - drm/scheduler conversion
 
 panfrost:
 - rework GPU reset
 
 virtio:
 - fix fencing for planes
 
 ast:
 - add detect support
 
 bochs:
 - move to tiny GPU driver
 
 vc4:
 - use hotplug irqs
 - HDMI codec support
 
 vmwgfx:
 - use internal vmware device headers
 
 ingenic:
 - demidlayering irq
 
 rcar-du:
 - shutdown fixes
 - convert to bridge connector helpers
 
 zynqmp-dsub:
 - misc fixes
 
 mgag200:
 - convert PLL handling to atomic
 
 mediatek:
 - MT8133 AAL support
 - gem mmap object support
 - MT8167 support
 
 etnaviv:
 - NXP Layerscape LS1028A SoC support
 - GEM mmap cleanups
 
 tegra:
 - new user API
 
 exynos:
 - missing unlock fix
 - build warning fix
 - use refcount_t
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Merge tag 'drm-next-2021-08-31-1' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Highlights:

   - i915 has seen a lot of refactoring and uAPI cleanups due to a
     change in the upstream direction going forward

     This has all been audited with known userspace, but there may be
     some pitfalls that were missed.

   - i915 now uses common TTM to enable discrete memory on DG1/2 GPUs

   - i915 enables Jasper and Elkhart Lake by default and has preliminary
     XeHP/DG2 support

   - amdgpu adds support for Cyan Skillfish

   - lots of implicit fencing rules documented and fixed up in drivers

   - msm now uses the core scheduler

   - the irq midlayer has been removed for non-legacy drivers

   - the sysfb code now works on more than x86.

  Otherwise the usual smattering of stuff everywhere, panels, bridges,
  refactorings.

  Detailed summary:

  core:
   - extract i915 eDP backlight into core
   - DP aux bus support
   - drm_device.irq_enabled removed
   - port drivers to native irq interfaces
   - export gem shadow plane handling for vgem
   - print proper driver name in framebuffer registration
   - driver fixes for implicit fencing rules
   - ARM fixed rate compression modifier added
   - updated fb damage handling
   - rmfb ioctl logging/docs
   - drop drm_gem_object_put_locked
   - define DRM_FORMAT_MAX_PLANES
   - add gem fb vmap/vunmap helpers
   - add lockdep_assert(once) helpers
   - mark drm irq midlayer as legacy
   - use offset adjusted bo mapping conversion

  vgaarb:
   - cleanups

  fbdev:
   - extend efifb handling to all arches
   - div by 0 fixes for multiple drivers

  udmabuf:
   - add hugepage mapping support

  dma-buf:
   - non-dynamic exporter fixups
   - document implicit fencing rules

  amdgpu:
   - Initial Cyan Skillfish support
   - switch virtual DCE over to vkms based atomic
   - VCN/JPEG power down fixes
   - NAVI PCIE link handling fixes
   - AMD HDMI freesync fixes
   - Yellow Carp + Beige Goby fixes
   - Clockgating/S0ix/SMU/EEPROM fixes
   - embed hw fence in job
   - rework dma-resv handling
   - ensure eviction to system ram

  amdkfd:
   - uapi: SVM address range query added
   - sysfs leak fix
   - GPUVM TLB optimizations
   - vmfault/migration counters

  i915:
   - Enable JSL and EHL by default
   - preliminary XeHP/DG2 support
   - remove all CNL support (never shipped)
   - move to TTM for discrete memory support
   - allow mixed object mmap handling
   - GEM uAPI spring cleaning
       - add I915_MMAP_OBJECT_FIXED
       - reinstate ADL-P mmap ioctls
       - drop a bunch of unused by userspace features
       - disable and remove GPU relocations
   - revert some i915 misfeatures
   - major refactoring of GuC for Gen11+
   - execbuffer object locking separate step
   - reject caching/set-domain on discrete
   - Enable pipe DMC loading on XE-LPD and ADL-P
   - add PSF GV point support
   - Refactor and fix DDI buffer translations
   - Clean up FBC CFB allocation code
   - Finish INTEL_GEN() and friends macro conversions

  nouveau:
   - add eDP backlight support
   - implicit fence fix

  msm:
   - a680/7c3 support
   - drm/scheduler conversion

  panfrost:
   - rework GPU reset

  virtio:
   - fix fencing for planes

  ast:
   - add detect support

  bochs:
   - move to tiny GPU driver

  vc4:
   - use hotplug irqs
   - HDMI codec support

  vmwgfx:
   - use internal vmware device headers

  ingenic:
   - demidlayering irq

  rcar-du:
   - shutdown fixes
   - convert to bridge connector helpers

  zynqmp-dsub:
   - misc fixes

  mgag200:
   - convert PLL handling to atomic

  mediatek:
   - MT8133 AAL support
   - gem mmap object support
   - MT8167 support

  etnaviv:
   - NXP Layerscape LS1028A SoC support
   - GEM mmap cleanups

  tegra:
   - new user API

  exynos:
   - missing unlock fix
   - build warning fix
   - use refcount_t"

* tag 'drm-next-2021-08-31-1' of git://anongit.freedesktop.org/drm/drm: (1318 commits)
  drm/amd/display: Move AllowDRAMSelfRefreshOrDRAMClockChangeInVblank to bounding box
  drm/amd/display: Remove duplicate dml init
  drm/amd/display: Update bounding box states (v2)
  drm/amd/display: Update number of DCN3 clock states
  drm/amdgpu: disable GFX CGCG in aldebaran
  drm/amdgpu: Clear RAS interrupt status on aldebaran
  drm/amdgpu: Add support for RAS XGMI err query
  drm/amdkfd: Account for SH/SE count when setting up cu masks.
  drm/amdgpu: rename amdgpu_bo_get_preferred_pin_domain
  drm/amdgpu: drop redundant cancel_delayed_work_sync call
  drm/amdgpu: add missing cleanups for more ASICs on UVD/VCE suspend
  drm/amdgpu: add missing cleanups for Polaris12 UVD/VCE on suspend
  drm/amdkfd: map SVM range with correct access permission
  drm/amdkfd: check access permisson to restore retry fault
  drm/amdgpu: Update RAS XGMI Error Query
  drm/amdgpu: Add driver infrastructure for MCA RAS
  drm/amd/display: Add Logging for HDMI color depth information
  drm/amd/amdgpu: consolidate PSP TA init shared buf functions
  drm/amd/amdgpu: add name field back to ras_common_if
  drm/amdgpu: Fix build with missing pm_suspend_target_state module export
  ...
2021-09-01 11:26:46 -07:00
Linus Torvalds
c6c3c5704b Driver core update for 5.15-rc1
Here is the big set of driver core patches for 5.15-rc1.
 
 These do change a number of different things across different
 subsystems, and because of that, there were 2 stable tags created that
 might have already come into your tree from different pulls that did the
 following
 	- changed the bus remove callback to return void
 	- sysfs iomem_get_mapping rework
 
 The latter one will cause a tiny merge issue with your tree, as there
 was a last-minute fix for this in 5.14 in your tree, but the fixup
 should be "obvious".  If you want me to provide a fixed merge for this,
 please let me know.
 
 Other than those two things, there's only a few small things in here:
 	- kernfs performance improvements for huge numbers of sysfs
 	  users at once
 	- tiny api cleanups
 	- other minor changes
 
 All of these have been in linux-next for a while with no reported
 problems, other than the before-mentioned merge issue.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.15-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 patches for 5.15-rc1.

  These do change a number of different things across different
  subsystems, and because of that, there were 2 stable tags created that
  might have already come into your tree from different pulls that did
  the following

   - changed the bus remove callback to return void

   - sysfs iomem_get_mapping rework

  Other than those two things, there's only a few small things in here:

   - kernfs performance improvements for huge numbers of sysfs users at
     once

   - tiny api cleanups

   - other minor changes

  All of these have been in linux-next for a while with no reported
  problems, other than the before-mentioned merge issue"

* tag 'driver-core-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (33 commits)
  MAINTAINERS: Add dri-devel for component.[hc]
  driver core: platform: Remove platform_device_add_properties()
  ARM: tegra: paz00: Handle device properties with software node API
  bitmap: extend comment to bitmap_print_bitmask/list_to_buf
  drivers/base/node.c: use bin_attribute to break the size limitation of cpumap ABI
  topology: use bin_attribute to break the size limitation of cpumap ABI
  lib: test_bitmap: add bitmap_print_bitmask/list_to_buf test cases
  cpumask: introduce cpumap_print_list/bitmask_to_buf to support large bitmask and list
  sysfs: Rename struct bin_attribute member to f_mapping
  sysfs: Invoke iomem_get_mapping() from the sysfs open callback
  debugfs: Return error during {full/open}_proxy_open() on rmmod
  zorro: Drop useless (and hardly used) .driver member in struct zorro_dev
  zorro: Simplify remove callback
  sh: superhyway: Simplify check in remove callback
  nubus: Simplify check in remove callback
  nubus: Make struct nubus_driver::remove return void
  kernfs: dont call d_splice_alias() under kernfs node lock
  kernfs: use i_lock to protect concurrent inode updates
  kernfs: switch kernfs to use an rwsem
  kernfs: use VFS negative dentry caching
  ...
2021-09-01 08:44:42 -07:00
Linus Torvalds
ba1dc7f273 Char / Misc driver changes for 5.15-rc1
Here is the big set of char/misc driver changes for 5.15-rc1.
 
 Lots of different driver subsystems are being updated in here, notably:
 	- mhi subsystem update
 	- fpga subsystem update
 	- coresight/hwtracing subsystem update
 	- interconnect subsystem update
 	- nvmem subsystem update
 	- parport drivers update
 	- phy subsystem update
 	- soundwire subsystem update
 and there are some other char/misc drivers being updated as well:
 	- binder driver additions
 	- new misc drivers
 	- lkdtm driver updates
 	- mei driver updates
 	- sram driver updates
 	- other minor driver updates.
 
 Note, there are no habanna labs driver updates in this pull request,
 that will probably come later before -rc1 is out in a different request.
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
 "Here is the big set of char/misc driver changes for 5.15-rc1.

  Lots of different driver subsystems are being updated in here,
  notably:

   - mhi subsystem update

   - fpga subsystem update

   - coresight/hwtracing subsystem update

   - interconnect subsystem update

   - nvmem subsystem update

   - parport drivers update

   - phy subsystem update

   - soundwire subsystem update

  and there are some other char/misc drivers being updated as well:

   - binder driver additions

   - new misc drivers

   - lkdtm driver updates

   - mei driver updates

   - sram driver updates

   - other minor driver updates.

  Note, there are no habanalabs driver updates in this pull request,
  that will probably come later before -rc1 is out in a different
  request.

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

* tag 'char-misc-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits)
  Revert "bus: mhi: Add inbound buffers allocation flag"
  misc/pvpanic: fix set driver data
  VMCI: fix NULL pointer dereference when unmapping queue pair
  char: mware: fix returnvar.cocci warnings
  parport: remove non-zero check on count
  soundwire: cadence: do not extend reset delay
  soundwire: intel: conditionally exit clock stop mode on system suspend
  soundwire: intel: skip suspend/resume/wake when link was not started
  soundwire: intel: fix potential race condition during power down
  phy: qcom-qmp: Add support for SM6115 UFS phy
  dt-bindings: phy: qcom,qmp: Add SM6115 UFS PHY bindings
  phy: qmp: Provide unique clock names for DP clocks
  lkdtm: remove IDE_CORE_CP crashpoint
  lkdtm: replace SCSI_DISPATCH_CMD with SCSI_QUEUE_RQ
  coresight: Replace deprecated CPU-hotplug functions.
  Documentation: coresight: Add documentation for CoreSight config
  coresight: syscfg: Add initial configfs support
  coresight: config: Add preloaded configurations
  coresight: etm4x: Add complex configuration handlers to etmv4
  coresight: etm-perf: Update to activate selected configuration
  ...
2021-09-01 08:35:06 -07:00
Linus Torvalds
81b0b29bf7 Merge branch 'stable/for-linus-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft
Pull ibft updates from Konrad Rzeszutek Wilk:
 "A fix for iBFT parsing code badly interfacing when KASLR is enabled"

* 'stable/for-linus-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft:
  iscsi_ibft: fix warning in reserve_ibft_region()
  iscsi_ibft: fix crash due to KASLR physical memory remapping
2021-08-31 15:28:21 -07:00
Linus Torvalds
46f4945e2b A handful of EFI changes for this cycle:
- EFI CPER parsing improvements,
  - Don't take the address of efi_guid_t internal fields
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'efi-core-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull EFI updates from Ingo Molnar:
 "A handful of EFI changes for this cycle:

   - EFI CPER parsing improvements

   - Don't take the address of efi_guid_t internal fields"

* tag 'efi-core-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi: cper: check section header more appropriately
  efi: Don't use knowledge about efi_guid_t internals
  efi: cper: fix scnprintf() use in cper_mem_err_location()
2021-08-30 13:57:55 -07:00
Linus Torvalds
44a7d44411 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
 "Algorithms:

   - Add AES-NI/AVX/x86_64 implementation of SM4.

  Drivers:

   - Add Arm SMCCC TRNG based driver"

[ And obviously a lot of random fixes and updates  - Linus]

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (84 commits)
  crypto: sha512 - remove imaginary and mystifying clearing of variables
  crypto: aesni - xts_crypt() return if walk.nbytes is 0
  padata: Remove repeated verbose license text
  crypto: ccp - Add support for new CCP/PSP device ID
  crypto: x86/sm4 - add AES-NI/AVX2/x86_64 implementation
  crypto: x86/sm4 - export reusable AESNI/AVX functions
  crypto: rmd320 - remove rmd320 in Makefile
  crypto: skcipher - in_irq() cleanup
  crypto: hisilicon - check _PS0 and _PR0 method
  crypto: hisilicon - change parameter passing of debugfs function
  crypto: hisilicon - support runtime PM for accelerator device
  crypto: hisilicon - add runtime PM ops
  crypto: hisilicon - using 'debugfs_create_file' instead of 'debugfs_create_regset32'
  crypto: tcrypt - add GCM/CCM mode test for SM4 algorithm
  crypto: testmgr - Add GCM/CCM mode test of SM4 algorithm
  crypto: tcrypt - Fix missing return value check
  crypto: hisilicon/sec - modify the hardware endian configuration
  crypto: hisilicon/sec - fix the abnormal exiting process
  crypto: qat - store vf.compatible flag
  crypto: qat - do not export adf_iov_putmsg()
  ...
2021-08-30 12:57:10 -07:00
Shuai Xue
1be72c8e07 efi: cper: check section header more appropriately
When checking a generic status block, we iterate over all the generic data
blocks. The loop condition checks that the generic data block is valid.
Because the size of data blocks (excluding error data) may vary depending
on the revision and the revision is contained within the data block, we
should ensure that enough of the current data block is valid appropriately
for different revision.

Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-08-27 16:03:01 +02:00
Rasmus Villemoes
5eff88dd6b efi: cper: fix scnprintf() use in cper_mem_err_location()
The last two if-clauses fail to update n, so whatever they might have
written at &msg[n] would be cut off by the final nul-termination.

That nul-termination is redundant; scnprintf(), just like snprintf(),
guarantees a nul-terminated output buffer, provided the buffer size is
positive.

And there's no need to discount one byte from the initial buffer;
vsnprintf() expects to be given the full buffer size - it's not going
to write the nul-terminator one beyond the given (buffer, size) pair.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-08-27 16:01:27 +02:00
Greg Kroah-Hartman
637d095751 Merge 5.14-rc7 into char-misc-next
We need the char/misc fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-24 15:24:21 +02:00
Alexey Dobriyan
c0891ac15f isystem: ship and use stdarg.h
Ship minimal stdarg.h (1 type, 4 macros) as <linux/stdarg.h>.
stdarg.h is the only userspace header commonly used in the kernel.

GPL 2 version of <stdarg.h> can be extracted from
http://archive.debian.org/debian/pool/main/g/gcc-4.2/gcc-4.2_4.2.4.orig.tar.gz

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-08-19 09:02:55 +09:00
Christophe JAILLET
09cbd1df7d firmware: raspberrypi: Fix a leak in 'rpi_firmware_get()'
The reference taken by 'of_find_device_by_node()' must be released when
not needed anymore.

Add the corresponding 'put_device()' in the normal and error handling
paths.

Fixes: 4e3d60656a ("ARM: bcm2835: Add the Raspberry Pi firmware driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/5e17e5409b934cd08bf6f9279c73be5c1cb11cce.1628232242.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18 16:02:08 +02:00
Arnd Bergmann
5c785014b6 Qualcomm driver updates for v5.15
This fixes the "shared memory state machine" (SMSM) interrupt logic to
 avoid missing transitions happening while the interrupts are masked.
 
 SM6115 support is added to smd-rpm and rpmpd.
 
 The Qualcomm SCM firmware driver is once again made possible to compile
 and load as a kernel module.
 
 An out-of-bounds error related to the cooling devices of the AOSS driver
 is corrected. The binding is converted to YAML and a generic compatible
 is introduced to reduce the driver churn.
 
 The GENI wrapper gains a helper function used in I2C and SPI for
 switching the serial engine hardware to use the wrapper's DMA-engine.
 
 Lastly it contains a number of cleanups and smaller fixes for rpmhpd,
 socinfo, CPR, mdt_loader and the GENI DT binding.
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Merge tag 'qcom-drivers-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/drivers

Qualcomm driver updates for v5.15

This fixes the "shared memory state machine" (SMSM) interrupt logic to
avoid missing transitions happening while the interrupts are masked.

SM6115 support is added to smd-rpm and rpmpd.

The Qualcomm SCM firmware driver is once again made possible to compile
and load as a kernel module.

An out-of-bounds error related to the cooling devices of the AOSS driver
is corrected. The binding is converted to YAML and a generic compatible
is introduced to reduce the driver churn.

The GENI wrapper gains a helper function used in I2C and SPI for
switching the serial engine hardware to use the wrapper's DMA-engine.

Lastly it contains a number of cleanups and smaller fixes for rpmhpd,
socinfo, CPR, mdt_loader and the GENI DT binding.

* tag 'qcom-drivers-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
  soc: qcom: smsm: Fix missed interrupts if state changes while masked
  soc: qcom: smsm: Implement support for get_irqchip_state
  soc: qcom: mdt_loader: be more informative on errors
  dt-bindings: qcom: geni-se: document iommus
  soc: qcom: smd-rpm: Add SM6115 compatible
  soc: qcom: geni: Add support for gpi dma
  soc: qcom: geni: move GENI_IF_DISABLE_RO to common header
  PM: AVS: qcom-cpr: Use nvmem_cell_read_variable_le_u32()
  drivers: soc: qcom: rpmpd: Add SM6115 RPM Power Domains
  dt-bindings: power: rpmpd: Add SM6115 to rpmpd binding
  dt-bindings: soc: qcom: smd-rpm: Add SM6115 compatible
  soc: qcom: aoss: Fix the out of bound usage of cooling_devs
  firmware: qcom_scm: Allow qcom_scm driver to be loadable as a permenent module
  soc: qcom: socinfo: Don't print anything if nothing found
  soc: qcom: rpmhpd: Use corner in power_off
  soc: qcom: aoss: Add generic compatible
  dt-bindings: soc: qcom: aoss: Convert to YAML
  dt-bindings: soc: qcom: aoss: Add SC8180X and generic compatible
  firmware: qcom_scm: remove a duplicative condition
  firmware: qcom_scm: Mark string array const

Link: https://lore.kernel.org/r/20210816214840.581244-1-bjorn.andersson@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-08-18 15:33:02 +02:00
Arnd Bergmann
8745d0e915 firmware: tegra: Changes for v5.15-rc1
This contains a single fix to stop a slight abuse of the seq_buf API.
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Merge tag 'tegra-for-5.15-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers

firmware: tegra: Changes for v5.15-rc1

This contains a single fix to stop a slight abuse of the seq_buf API.

* tag 'tegra-for-5.15-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  firmware: tegra: Stop using seq_get_buf()

Link: https://lore.kernel.org/r/20210813162157.2820913-2-thierry.reding@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-08-18 15:22:37 +02:00
Thara Gopinath
de3438c47a firmware: qcom_scm: Introduce SCM calls to access LMh
Introduce SCM calls to access/configure limits management hardware(LMH).

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210809191605.3742979-2-thara.gopinath@linaro.org
2021-08-18 09:31:53 +02:00
Linus Torvalds
12aef8acf0 Ard says:
A batch of fixes for the arm64 stub image loader:
 
 - fix a logic bug that can make the random page allocator fail
   spuriously
 - force reallocation of the Image when it overlaps with firmware
   reserved memory regions
 - fix an oversight that defeated on optimization introduced earlier
   where images loaded at a suitable offset are never moved if booting
   without randomization
 - complain about images that were not loaded at the right offset by the
   firmware image loader.
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Merge tag 'efi_urgent_for_v5.14_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull EFI fixes from Borislav Petkov:
 "A batch of fixes for the arm64 stub image loader:

   - fix a logic bug that can make the random page allocator fail
     spuriously

   - force reallocation of the Image when it overlaps with firmware
     reserved memory regions

   - fix an oversight that defeated on optimization introduced earlier
     where images loaded at a suitable offset are never moved if booting
     without randomization

   - complain about images that were not loaded at the right offset by
     the firmware image loader"

* tag 'efi_urgent_for_v5.14_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/libstub: arm64: Double check image alignment at entry
  efi/libstub: arm64: Warn when efi_random_alloc() fails
  efi/libstub: arm64: Relax 2M alignment again for relocatable kernels
  efi/libstub: arm64: Force Image reallocation if BSS was not reserved
  arm64: efi: kaslr: Fix occasional random alloc (and boot) failure
2021-08-15 06:38:26 -10:00
Arnd Bergmann
1bb24be00c SCMI Updates for v5.15
The bulk of the addition this time is mainly refactoring to add support
 for Virtio transport for SCMI and the addition of the support itself.
 The refactoring includes allowing transport specific init/exit calls,
 making each transport as compile time configurable, supporting
 monotonically increasing tokens instead of using the next available
 free buffer index as the token for scmi messages which eases handling
 concurrent and out-of-order messages which is a must have for virtio
 transport.
 
 Virtio support itself is conformant to the virtio SCMI device spec [1].
 Virtio device id 32 has been reserved for the SCMI device [2].
 
 Other than the virtio support, there is one bug fix in the probe failure
 clean up path.
 
 [1] https://github.com/oasis-tcs/virtio-spec/blob/master/virtio-scmi.tex
 [2] https://www.oasis-open.org/committees/ballot.php?id=3496
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Merge tag 'scmi-updates-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers

SCMI Updates for v5.15

The bulk of the addition this time is mainly refactoring to add support
for Virtio transport for SCMI and the addition of the support itself.
The refactoring includes allowing transport specific init/exit calls,
making each transport as compile time configurable, supporting
monotonically increasing tokens instead of using the next available
free buffer index as the token for scmi messages which eases handling
concurrent and out-of-order messages which is a must have for virtio
transport.

Virtio support itself is conformant to the virtio SCMI device spec [1].
Virtio device id 32 has been reserved for the SCMI device [2].

Other than the virtio support, there is one bug fix in the probe failure
clean up path.

[1] https://github.com/oasis-tcs/virtio-spec/blob/master/virtio-scmi.tex
[2] https://www.oasis-open.org/committees/ballot.php?id=3496

* tag 'scmi-updates-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Use WARN_ON() to check configured transports
  firmware: arm_scmi: Fix boolconv.cocci warnings
  firmware: arm_scmi: Free mailbox channels if probe fails
  firmware: arm_scmi: Add virtio transport
  firmware: arm_scmi: Add priv parameter to scmi_rx_callback
  dt-bindings: arm: Add virtio transport for SCMI
  firmware: arm_scmi: Add optional link_supplier() transport op
  firmware: arm_scmi: Add message passing abstractions for transports
  firmware: arm_scmi: Add method to override max message number
  firmware: arm_scmi: Make shmem support optional for transports
  firmware: arm_scmi: Make SCMI transports configurable
  firmware: arm_scmi: Make polling mode optional
  firmware: arm_scmi: Make .clear_channel optional
  firmware: arm_scmi: Handle concurrent and out-of-order messages
  firmware: arm_scmi: Introduce monotonically increasing tokens
  firmware: arm_scmi: Add optional transport_init/exit support
  firmware: arm_scmi: Remove scmi_dump_header_dbg() helper
  firmware: arm_scmi: Add support for type handling in common functions

Link: https://lore.kernel.org/r/20210811075743.707961-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-08-12 22:38:31 +02:00
Christoph Hellwig
dd00d75007 firmware: tegra: Stop using seq_get_buf()
Opencode a copy of mrq_debug_read() in bpmp_debug_show() so that it
can use seq_write() directly instead of poking holes into the seq_file
abstractions using seq_get_buf().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-08-11 12:17:18 +02:00
Dave Airlie
9efba20291 Bus: Make remove callback return void tag
Tag for other trees/branches to pull from in order to have a stable
 place to build off of if they want to add new busses for 5.15.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'bus_remove_return_void-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core into drm-next

Bus: Make remove callback return void tag

Tag for other trees/branches to pull from in order to have a stable
place to build off of if they want to add new busses for 5.15.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

[airlied: fixed up merge conflict in drm]
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patchwork.freedesktop.org/patch/msgid/YPkwQwf0dUKnGA7L@kroah.com
2021-08-11 08:47:08 +10:00
Thomas Gleixner
55203550f9 EFI fixes for v5.14-rc2:
A batch of fixes for the arm64 stub image loader:
 - fix a logic bug that can make the random page allocator fail
 spuriously
 - force reallocation of the Image when it overlaps with firmware
 reserved memory regions
 - fix an oversight that defeated on optimization introduced earlier
 where images loaded at a suitable offset are never moved if booting
 without randomization
 - complain about images that were not loaded at the right offset by the
 firmware image loader.
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Merge tag 'efi-urgent-for-v5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/urgent

Pull EFI fixes from Ard Biesheuvel:

 A batch of fixes for the arm64 stub image loader:

 - fix a logic bug that can make the random page allocator fail
   spuriously
 - force reallocation of the Image when it overlaps with firmware
   reserved memory regions
 - fix an oversight that defeated on optimization introduced earlier
   where images loaded at a suitable offset are never moved if booting
   without randomization
 - complain about images that were not loaded at the right offset by the
   firmware image loader.

Link: https://lore.kernel.org/r/20210803091215.2566-1-ardb@kernel.org
2021-08-10 10:24:49 +02:00
Cristian Marussi
c0397c85b5 firmware: arm_scmi: Use WARN_ON() to check configured transports
Use a WARN_ON() when SCMI stack is loaded to check the consistency of
configured SCMI transports instead of the current compile-time check
BUILD_BUG_ON() to avoid breaking bot-builds on random bad configs.

Bail-out early and noisy during SCMI stack initialization if no transport
was enabled in configuration since SCMI cannot work without at least one
enabled transport and such constraint cannot be enforced in Kconfig due to
circular dependency issues.

Link: https://lore.kernel.org/r/20210809092245.8730-1-cristian.marussi@arm.com
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-09 11:43:32 +01:00
Greg Kroah-Hartman
bd935a7b21 Merge 5.14-rc5 into driver-core-next
We need the driver core fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-09 09:03:47 +02:00
Greg Kroah-Hartman
813272ed52 Merge 5.14-rc5 into char-misc-next
We need the fixes in here as well, and resolves some merge issues with
the mhi codebase.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-09 08:57:03 +02:00
kernel test robot
d4fda7ec1d firmware: arm_scmi: Fix boolconv.cocci warnings
drivers/firmware/arm_scmi/virtio.c:225:40-45: WARNING: conversion to bool not needed here

 Remove unneeded conversion to bool

Semantic patch information:
 Relational and logical operators evaluate to bool,
 explicit conversion is overly verbose and unneeded.

Generated by: scripts/coccinelle/misc/boolconv.cocci

Link: https://lore.kernel.org/r/20210807173127.GA43248@a24dbc127934
CC: Igor Skalkin <igor.skalkin@opensynergy.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-09 06:03:52 +01:00
Michal Simek
2a8faf8dfd firmware: xilinx: Fix incorrect names in kernel-doc
There are some c&p issues reported by kernel-doc as:
drivers/firmware/xilinx/zynqmp.c:676: warning: expecting prototype for
zynqmp_pm_write_ggs(). Prototype was for zynqmp_pm_read_ggs() instead
drivers/firmware/xilinx/zynqmp.c:710: warning: expecting prototype for
zynqmp_pm_write_pggs(). Prototype was for zynqmp_pm_read_pggs() instead
drivers/firmware/xilinx/zynqmp.c:1023: warning: expecting prototype for
zynqmp_pm_aes(). Prototype was for zynqmp_pm_aes_engine() instead

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/a81edd4fc6cff4bd7e4984fceda941b9e9ab01bf.1628245954.git.michal.simek@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-06 15:17:53 +02:00
Andre Przywara
b83c2d92be firmware: smccc: Register smccc_trng platform device
At the moment we probe for the Random Number Generator SMCCC service,
and use that in the core code (arch_get_random). However the hardware
entropy can also be useful to access from userland, and be it to assess
its quality.

Register a platform device when the SMCCC TRNG service is detected, to
allow a hw_random driver to hook onto this.

The function registering the device is deliberately made in a way which
allows expansion, so other services that could be exposed via a platform
device (or some other interface), can be added here easily.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2021-08-06 19:45:25 +08:00
Maurizio Lombardi
7fd1d00bf8 iscsi_ibft: fix warning in reserve_ibft_region()
Use %pa to print a physical address.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>
2021-08-05 19:47:57 -04:00
Rishabh Bhatnagar
1e7cbfaa66 firmware: arm_scmi: Free mailbox channels if probe fails
Mailbox channels for the base protocol are setup during probe.
There can be a scenario where probe fails to acquire the base
protocol due to a timeout leading to cleaning up of all device
managed memory including the scmi_mailbox structure setup during
mailbox_chan_setup function.

    | arm-scmi soc:qcom,scmi: timed out in resp(caller: version_get+0x84/0x140)
    | arm-scmi soc:qcom,scmi: unable to communicate with SCMI
    | arm-scmi: probe of soc:qcom,scmi failed with error -110

Now when a message arrives at cpu slightly after the timeout, the mailbox
controller will try to call the rx_callback of the client and might end
up accessing freed memory.

     | rx_callback+0x24/0x160
     | mbox_chan_received_data+0x44/0x94
     | __handle_irq_event_percpu+0xd4/0x240

This patch frees the mailbox channels setup during probe and adds some more
error handling in case the probe fails.

Link: https://lore.kernel.org/r/1628111999-21595-1-git-send-email-rishabhb@codeaurora.org
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 11:57:03 +01:00
Igor Skalkin
46abe13b5e firmware: arm_scmi: Add virtio transport
This 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) and
at 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 restricted
according to the virtqueue capacity negotiated at probing time.

As soon as Rx channel message buffers are allocated or have been read
out by the arm-scmi driver, feed them back to the virtio device.

Since some virtio devices may not have the short response time exhibited
by SCMI platforms using other transports, set a generous response
timeout.

SCMI polling mode is not supported by this virtio transport since deemed
meaningless: polling mode operation is offered by the SCMI core to those
transports that could not provide a completion interrupt on the TX path,
which is never the case for virtio whose core callbacks can easily call
into 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=3496

Link: https://lore.kernel.org/r/20210803131024.40280-16-cristian.marussi@arm.com
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Co-developed-by: Peter Hilber <peter.hilber@opensynergy.com>
Co-developed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Igor Skalkin <igor.skalkin@opensynergy.com>
[ Peter: Adapted patch for submission to upstream. ]
Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
[ Cristian: simplified driver logic, changed link_supplier and channel
	    available/setup logic, removed dummy callbacks ]
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:24:08 +01:00
Cristian Marussi
13fba878cc firmware: arm_scmi: Add priv parameter to scmi_rx_callback
Add a new opaque void *priv parameter to scmi_rx_callback which can be
optionally provided by the transport layer when invoking scmi_rx_callback
and that will be passed back to the transport layer in xfer->priv.

This can be used by transports that needs to keep track of their specific
data structures together with the valid xfers.

Link: https://lore.kernel.org/r/20210803131024.40280-15-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:23 +01:00
Peter Hilber
7885281260 firmware: arm_scmi: Add optional link_supplier() transport op
Some transports are also effectively registered with other kernel subsystem
in order to be properly probed and initialized; as a consequence such kind
of transports, and their related devices, might still not have been probed
and initialized at the time the main SCMI core driver is probed.

Add an optional .link_supplier() transport operation which can be used by
the core SCMI stack to dynamically check if the transport is ready and
dynamically link its device to the SCMI platform instance device.

Link: https://lore.kernel.org/r/20210803131024.40280-13-cristian.marussi@arm.com
Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
[ Cristian: reworded commit message ]
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:23 +01:00
Peter Hilber
f301bba0ca firmware: arm_scmi: Add message passing abstractions for transports
Add abstractions for future transports using message passing, such as
virtio. 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 information
about the transport SDU.

Link: https://lore.kernel.org/r/20210803131024.40280-12-cristian.marussi@arm.com
Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
[ Cristian: Adapted to new SCMI Kconfig layout, updated Copyrights ]
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:23 +01:00
Igor Skalkin
c92c3e382e firmware: arm_scmi: Add method to override max message number
The maximum number of simultaneously pending messages is a transport
specific quantity that is usually described statically in struct scmi_desc.

Some transports, though, can calculate such number only at run-time after
some initial transport specific setup and probing is completed; moreover
the resulting max message numbers could also be different between rx and
tx channels.

Add an optional get_max_msg() operation so that a transport can report more
accurate max message numbers for each channel type.

The value in scmi_desc.max_msg is still used as default when transport does
not provide any get_max_msg() method.

Link: https://lore.kernel.org/r/20210803131024.40280-11-cristian.marussi@arm.com
Co-developed-by: Peter Hilber <peter.hilber@opensynergy.com>
Co-developed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Igor Skalkin <igor.skalkin@opensynergy.com>
[ Peter: Adapted patch for submission to upstream. ]
Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
[ Cristian: refactored how get_max_msg() is used to minimize core changes ]
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:23 +01:00
Igor Skalkin
a7b1138b92 firmware: arm_scmi: Make shmem support optional for transports
Upcoming new SCMI transports won't need any kind of shared memory support.
Compile shmem.c only if a shmem based transport is selected.

Link: https://lore.kernel.org/r/20210803131024.40280-10-cristian.marussi@arm.com
Co-developed-by: Peter Hilber <peter.hilber@opensynergy.com>
Signed-off-by: Igor Skalkin <igor.skalkin@opensynergy.com>
[ Peter: Adapted patch for submission to upstream. ]
Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
[ Cristian: Adapted patch/commit_msg to new SCMI Kconfig layout ]
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:23 +01:00
Cristian Marussi
e8419c24ba firmware: arm_scmi: Make SCMI transports configurable
Add configuration options to be able to select which SCMI transports have
to be compiled into the SCMI stack.

Mailbox and SMC are by default enabled if their related dependencies are
satisfied.

While doing that move all SCMI related config options in their own
dedicated submenu.

Link: https://lore.kernel.org/r/20210803131024.40280-9-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:22 +01:00
Cristian Marussi
2930abcffd firmware: arm_scmi: Make polling mode optional
Add a check for the presence of .poll_done transport operation so that
transports that do not need to support polling mode have no need to provide
a dummy .poll_done callback either and polling mode can be disabled in the
SCMI core for that tranport.

Link: https://lore.kernel.org/r/20210803131024.40280-8-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:22 +01:00
Cristian Marussi
e9b21c9618 firmware: arm_scmi: Make .clear_channel optional
Make transport operation .clear_channel optional since some transports
do not need it and so avoid to have them implement dummy callbacks.

Link: https://lore.kernel.org/r/20210803131024.40280-7-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:22 +01:00
Cristian Marussi
ed7c04c1fe firmware: arm_scmi: Handle concurrent and out-of-order messages
Even though in case of asynchronous commands an SCMI platform is
constrained to emit the delayed response message only after the related
message response has been sent, the configured underlying transport could
still deliver such messages together or in inverted order, causing races
due to the concurrent or out-of-order access to the underlying xfer.

Introduce a mechanism to grant exclusive access to an xfer in order to
properly serialize concurrent accesses to the same xfer originating from
multiple correlated messages.

Add additional state information to xfer descriptors so as to be able to
identify out-of-order message deliveries and act accordingly:

 - when a delayed response is expected but delivered before the related
   response, the synchronous response is considered as successfully
   received and the delayed response processing is carried on as usual.

 - when/if the missing synchronous response is subsequently received, it
   is discarded as not congruent with the current state of the xfer, or
   simply, because the xfer has been already released and so, now, the
   monotonically increasing sequence number carried by the late response
   is stale.

Link: https://lore.kernel.org/r/20210803131024.40280-6-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:22 +01:00
Cristian Marussi
9ca5a1838e firmware: arm_scmi: Introduce monotonically increasing tokens
Tokens are sequence numbers embedded in the each SCMI message header: they
are used to correlate commands with responses (and delayed responses), but
their usage and policy of selection is entirely up to the caller (usually
the OSPM agent), while they are completely opaque to the callee (i.e. SCMI
platform) which merely copies them back from the command into the response
message header.
This also means that the platform does not, can not and should not enforce
any kind of policy on received messages depending on the contained sequence
number: platform can perfectly handle concurrent requests carrying the same
identifiying token if that should happen.

Moreover the platform is not required to produce in-order responses to
agent requests, the only constraint in these regards is that in case of
an asynchronous message the delayed response must be sent after the
immediate response for the synchronous part of the command transaction.

Currenly the SCMI stack of the OSPM agent selects a token for the egressing
commands picking the lowest possible number which is not already in use by
an existing in-flight transaction, which means, in other words, that we
immediately reuse any token after its transaction has completed or it has
timed out: this policy indeed does simplify management and lookup of tokens
and associated xfers.

Under the above assumptions and constraints, since there is really no state
shared between the agent and the platform to let the platform know when a
token and its associated message has timed out, the current policy of early
reuse of tokens can easily lead to the situation in which a spurious or
late received response (or delayed_response), related to an old stale and
timed out transaction, can be wrongly associated to a newer valid in-flight
xfer that just happens to have reused the same token.

This misbehaviour on such late/spurious responses is more easily exposed on
those transports that naturally have an higher level of parallelism in
processing multiple concurrent in-flight messages.

This commit introduces a new policy of selection of tokens for the OSPM
agent: each new command transfer now gets the next available, monotonically
increasing token, until tokens are exhausted and the counter rolls over.

Such new policy mitigates the above issues with late/spurious responses
since the tokens are now reused as late as possible (when they roll back
ideally) and so it is much easier to identify such late/spurious responses
to stale timed out transactions: this also helps in simplifying the
specific transports implementation since stale transport messages can be
easily identified and discarded early on in the rx path without the need
to cross check their actual state with the core transport layer.
This mitigation is even more effective when, as is usually the case, the
maximum number of pending messages is capped by the platform to a much
lower number than the whole possible range of tokens values (2^10).

This internal policy change in the core SCMI transport layer is fully
transparent to the specific transports so it has not and should not have
any impact on the transports implementation.

Link: https://lore.kernel.org/r/20210803131024.40280-5-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:22 +01:00
Cristian Marussi
ceac257db0 firmware: arm_scmi: Add optional transport_init/exit support
Some SCMI transport could need to perform some transport specific setup
before they can be used by the SCMI core transport layer: typically this
early setup consists in registering with some other kernel subsystem.

Add the optional capability for a transport to provide a couple of init
and exit functions that are assured to be called early during the SCMI
core initialization phase, well before the SCMI core probing step.

[ Peter: Adapted RFC patch by Cristian for submission to upstream. ]

Link: https://lore.kernel.org/r/20210803131024.40280-4-cristian.marussi@arm.com
Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
[ Cristian: Fixed scmi_transports_exit point of invocation ]
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:22 +01:00
Cristian Marussi
3669032514 firmware: arm_scmi: Remove scmi_dump_header_dbg() helper
Being a while that we have SCMI trace events in the SCMI stack, remove
this debug helper and its call sites.

Link: https://lore.kernel.org/r/20210803131024.40280-3-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:22 +01:00
Cristian Marussi
63b282f172 firmware: arm_scmi: Add support for type handling in common functions
Add SCMI type handling to pack/unpack_scmi_header common helper functions.
Initialize hdr.type properly when initializing a command xfer.

Link: https://lore.kernel.org/r/20210803131024.40280-2-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-08-05 10:23:21 +01:00
Ard Biesheuvel
c32ac11da3 efi/libstub: arm64: Double check image alignment at entry
On arm64, the stub only moves the kernel image around in memory if
needed, which is typically only for KASLR, given that relocatable
kernels (which is the default) can run from any 64k aligned address,
which is also the minimum alignment communicated to EFI via the PE/COFF
header.

Unfortunately, some loaders appear to ignore this header, and load the
kernel at some arbitrary offset in memory. We can deal with this, but
let's check for this condition anyway, so non-compliant code can be
spotted and fixed.

Cc: <stable@vger.kernel.org> # v5.10+
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2021-08-03 07:43:13 +02:00
Ard Biesheuvel
ff80ef5bf5 efi/libstub: arm64: Warn when efi_random_alloc() fails
Randomization of the physical load address of the kernel image relies on
efi_random_alloc() returning successfully, and currently, we ignore any
failures and just carry on, using the ordinary, non-randomized page
allocator routine. This means we never find out if a failure occurs,
which could harm security, so let's at least warn about this condition.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2021-08-03 07:43:07 +02:00
Ard Biesheuvel
3a26242375 efi/libstub: arm64: Relax 2M alignment again for relocatable kernels
Commit 82046702e2 ("efi/libstub/arm64: Replace 'preferred' offset with
alignment check") simplified the way the stub moves the kernel image
around in memory before booting it, given that a relocatable image does
not need to be copied to a 2M aligned offset if it was loaded on a 64k
boundary by EFI.

Commit d32de9130f ("efi/arm64: libstub: Deal gracefully with
EFI_RNG_PROTOCOL failure") inadvertently defeated this logic by
overriding the value of efi_nokaslr if EFI_RNG_PROTOCOL is not
available, which was mistaken by the loader logic as an explicit request
on the part of the user to disable KASLR and any associated relocation
of an Image not loaded on a 2M boundary.

So let's reinstate this functionality, by capturing the value of
efi_nokaslr at function entry to choose the minimum alignment.

Fixes: d32de9130f ("efi/arm64: libstub: Deal gracefully with EFI_RNG_PROTOCOL failure")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2021-08-03 07:43:02 +02:00
Ard Biesheuvel
5b94046efb efi/libstub: arm64: Force Image reallocation if BSS was not reserved
Distro versions of GRUB replace the usual LoadImage/StartImage calls
used to load the kernel image with some local code that fails to honor
the allocation requirements described in the PE/COFF header, as it
does not account for the image's BSS section at all: it fails to
allocate space for it, and fails to zero initialize it.

Since the EFI stub itself is allocated in the .init segment, which is
in the middle of the image, its BSS section is not impacted by this,
and the main consequence of this omission is that the BSS section may
overlap with memory regions that are already used by the firmware.

So let's warn about this condition, and force image reallocation to
occur in this case, which works around the problem.

Fixes: 82046702e2 ("efi/libstub/arm64: Replace 'preferred' offset with alignment check")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2021-08-03 07:41:53 +02:00
Arnd Bergmann
64429b9e0e tee: Improve support for kexec and kdump
This fixes several bugs uncovered while exercising the OP-TEE, ftpm
 (firmware TPM), and tee_bnxt_fw (Broadcom BNXT firmware manager) drivers
 with kexec and kdump (emergency kexec) based workflows.
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Merge tag 'tee-kexec-fixes-for-v5.14' of git://git.linaro.org:/people/jens.wiklander/linux-tee into arm/fixes

tee: Improve support for kexec and kdump

This fixes several bugs uncovered while exercising the OP-TEE, ftpm
(firmware TPM), and tee_bnxt_fw (Broadcom BNXT firmware manager) drivers
with kexec and kdump (emergency kexec) based workflows.

* tag 'tee-kexec-fixes-for-v5.14' of git://git.linaro.org:/people/jens.wiklander/linux-tee:
  firmware: tee_bnxt: Release TEE shm, session, and context during kexec
  tpm_ftpm_tee: Free and unregister TEE shared memory during kexec
  tee: Correct inappropriate usage of TEE_SHM_DMA_BUF flag
  tee: add tee_shm_alloc_kernel_buf()
  optee: Clear stale cache entries during initialization
  optee: fix tee out of memory failure seen during kexec reboot
  optee: Refuse to load the driver under the kdump kernel
  optee: Fix memory leak when failing to register shm pages

Link: https://lore.kernel.org/r/20210726081039.GA2482361@jade
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-08-02 14:35:18 +02:00
Maurizio Lombardi
342f43af70 iscsi_ibft: fix crash due to KASLR physical memory remapping
Starting with commit a799c2bd29
("x86/setup: Consolidate early memory reservations")
memory reservations have been moved earlier during the boot process,
before the execution of the Kernel Address Space Layout Randomization code.

setup_arch() calls the iscsi_ibft's find_ibft_region() function
to find and reserve the memory dedicated to the iBFT and this function
also saves a virtual pointer to the iBFT table for later use.

The problem is that if KALSR is active, the physical memory gets
remapped somewhere else in the virtual address space and the pointer is
no longer valid, this will cause a kernel panic when the iscsi driver tries
to dereference it.

 iBFT detected.
 BUG: unable to handle page fault for address: ffff888000099fd8
 #PF: supervisor read access in kernel mode
 #PF: error_code(0x0000) - not-present page
 PGD 0 P4D 0
 Oops: 0000 [#1] SMP PTI

..snip..

 Call Trace:
  ? ibft_create_kobject+0x1d2/0x1d2 [iscsi_ibft]
  do_one_initcall+0x44/0x1d0
  ? kmem_cache_alloc_trace+0x119/0x220
  do_init_module+0x5c/0x270
  __do_sys_init_module+0x12e/0x1b0
  do_syscall_64+0x40/0x80
  entry_SYSCALL_64_after_hwframe+0x44/0xae

Fix this bug by saving the address of the physical location
of the ibft; later the driver will use isa_bus_to_virt() to get
the correct virtual address.

N.B. On each reboot KASLR randomizes the virtual addresses so
assuming phys_to_virt before KASLR does its deed is incorrect.

Simplify the code by renaming find_ibft_region()
to reserve_ibft_region() and remove all the wrappers.

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>
2021-07-31 22:20:24 -04:00
Randy Dunlap
15d27b15de efi: sysfb_efi: fix build when EFI is not set
When # CONFIG_EFI is not set, there are 2 definitions of
sysfb_apply_efi_quirks(). The stub from sysfb.h should be used
and the __init function from sysfb_efi.c should not be used.

../drivers/firmware/efi/sysfb_efi.c:337:13: error: redefinition of ‘sysfb_apply_efi_quirks’
 __init void sysfb_apply_efi_quirks(struct platform_device *pd)
             ^~~~~~~~~~~~~~~~~~~~~~
In file included from ../drivers/firmware/efi/sysfb_efi.c:26:0:
../include/linux/sysfb.h:65:20: note: previous definition of ‘sysfb_apply_efi_quirks’ was here
 static inline void sysfb_apply_efi_quirks(struct platform_device *pd)
                    ^~~~~~~~~~~~~~~~~~~~~~

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Fixes: 8633ef82f1 ("drivers/firmware: consolidate EFI framebuffer setup for all arches")
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: linux-efi@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-next@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727050447.7339-1-rdunlap@infradead.org
2021-07-27 11:52:51 +02:00
Javier Martinez Canillas
71260b9a70 drivers/firmware: fix SYSFB depends to prevent build failures
The Generic System Framebuffers support is built when the COMPILE_TEST
option is enabled. But this wrongly assumes that all the architectures
declare a struct screen_info.

This is true for most architectures, but at least the following do not:
arc, m68k, microblaze, openrisc, parisc and s390.

By attempting to make this compile testeable on all architectures, it
leads to linking errors as reported by the kernel test robot for parisc:

  All errors (new ones prefixed by >>):

     hppa-linux-ld: drivers/firmware/sysfb.o: in function `sysfb_init':
     (.init.text+0x24): undefined reference to `screen_info'
  >> hppa-linux-ld: (.init.text+0x28): undefined reference to `screen_info'

To prevent these errors only allow sysfb to be built on systems that are
going to need it, which are x86 BIOS and EFI.

The EFI Kconfig symbol is used instead of (ARM || ARM64 || RISC) because
some of these architectures only declare a struct screen_info if EFI is
enabled. And also, because the SYSFB code is only used for EFI on these
architectures. For !EFI the "simple-framebuffer" device is registered by
OF when parsing the Device Tree Blob (if a DT node for this was defined).

Fixes: d391c58271 ("drivers/firmware: move x86 Generic System Framebuffers support")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727093015.1225107-1-javierm@redhat.com
2021-07-27 11:50:24 +02:00
Greg Kroah-Hartman
bdac4d8abb Merge 5.14-rc3 into driver-core-next
We need the driver-core fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-27 09:22:08 +02:00
Greg Kroah-Hartman
71e69d7ade Merge 5.14-rc3 into char-misc-next
We need the char-misc fixes from 5.14-rc3 into here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-26 12:55:17 +02:00
Dave Airlie
35482f9dc5 Linux 5.14-rc3
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Backmerge tag 'v5.14-rc3' into drm-next

Linux 5.14-rc3

Daniel said we should pull the nouveau fix from fixes in here, probably
a good plan.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2021-07-26 09:27:59 +10:00
Linus Torvalds
e049597e7e A set of EFI fixes:
- Prevent memblock and I/O reserved resources to get out of sync when EFI
     memreserve is in use.
 
   - Don't claim a non-existing table is invalid
 
   - Don't warn when firmware memory is already reserved correctly
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Merge tag 'efi-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull EFI fixes from Thomas Gleixner:
 "A set of EFI fixes:

   - Prevent memblock and I/O reserved resources to get out of sync when
     EFI memreserve is in use.

   - Don't claim a non-existing table is invalid

   - Don't warn when firmware memory is already reserved correctly"

* tag 'efi-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/mokvar: Reserve the table only if it is in boot services data
  efi/libstub: Fix the efi_load_initrd function description
  firmware/efi: Tell memblock about EFI iomem reservations
  efi/tpm: Differentiate missing and invalid final event log table.
2021-07-25 10:04:27 -07:00
Dave Airlie
8da49a33dd drm-misc-next for v5.15-rc1:
UAPI Changes:
 - Remove sysfs stats for dma-buf attachments, as it causes a performance regression.
   Previous merge is not in a rc kernel yet, so no userspace regression possible.
 
 Cross-subsystem Changes:
 - Sanitize user input in kyro's viewport ioctl.
 - Use refcount_t in fb_info->count
 - Assorted fixes to dma-buf.
 - Extend x86 efifb handling to all archs.
 - Fix neofb divide by 0.
 - Document corpro,gm7123 bridge dt bindings.
 
 Core Changes:
 - Slightly rework drm master handling.
 - Cleanup vgaarb handling.
 - Assorted fixes.
 
 Driver Changes:
 - Add support for ws2401 panel.
 - Assorted fixes to stm, ast, bochs.
 - Demidlayer ingenic irq.
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Merge tag 'drm-misc-next-2021-07-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.15-rc1:

UAPI Changes:
- Remove sysfs stats for dma-buf attachments, as it causes a performance regression.
  Previous merge is not in a rc kernel yet, so no userspace regression possible.

Cross-subsystem Changes:
- Sanitize user input in kyro's viewport ioctl.
- Use refcount_t in fb_info->count
- Assorted fixes to dma-buf.
- Extend x86 efifb handling to all archs.
- Fix neofb divide by 0.
- Document corpro,gm7123 bridge dt bindings.

Core Changes:
- Slightly rework drm master handling.
- Cleanup vgaarb handling.
- Assorted fixes.

Driver Changes:
- Add support for ws2401 panel.
- Assorted fixes to stm, ast, bochs.
- Demidlayer ingenic irq.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2d0d2fe8-01fc-e216-c3fd-38db9e69944e@linux.intel.com
2021-07-23 11:32:43 +10:00
Nava kishore Manne
2b9fc773c3 drivers: firmware: Add PDI load API support
This patch adds load PDI API support to enable full/partial PDI loading
from linux. Programmable Device Image (PDI) is combination of headers,
images and bitstream files to be loaded.

Reviewed-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Link: https://lore.kernel.org/r/20210626155248.5004-2-nava.manne@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-21 13:14:08 +02:00
Javier Martinez Canillas
8633ef82f1 drivers/firmware: consolidate EFI framebuffer setup for all arches
The register_gop_device() function registers an "efi-framebuffer" platform
device to match against the efifb driver, to have an early framebuffer for
EFI platforms.

But there is already support to do exactly the same by the Generic System
Framebuffers (sysfb) driver. This used to be only for X86 but it has been
moved to drivers/firmware and could be reused by other architectures.

Also, besides supporting registering an "efi-framebuffer", this driver can
register a "simple-framebuffer" allowing to use the siple{fb,drm} drivers
on non-X86 EFI platforms. For example, on aarch64 these drivers can only
be used with DT and doesn't have code to register a "simple-frambuffer"
platform device when booting with EFI.

For these reasons, let's remove the register_gop_device() duplicated code
and instead move the platform specific logic that's there to sysfb driver.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210625131359.1804394-1-javierm@redhat.com
2021-07-21 12:04:56 +02:00
Javier Martinez Canillas
d391c58271 drivers/firmware: move x86 Generic System Framebuffers support
The x86 architecture has generic support to register a system framebuffer
platform device. It either registers a "simple-framebuffer" if the config
option CONFIG_X86_SYSFB is enabled, or a legacy VGA/VBE/EFI FB device.

But the code is generic enough to be reused by other architectures and can
be moved out of the arch/x86 directory.

This will allow to also support the simple{fb,drm} drivers on non-x86 EFI
platforms, such as aarch64 where these drivers are only supported with DT.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210625130947.1803678-2-javierm@redhat.com
2021-07-21 12:04:56 +02:00
Uwe Kleine-König
fc7a6209d5 bus: Make remove callback return void
The driver core ignores the return value of this callback because there
is only little it can do when a device disappears.

This is the final bit of a long lasting cleanup quest where several
buses were converted to also return void from their remove callback.
Additionally some resource leaks were fixed that were caused by drivers
returning an error code in the expectation that the driver won't go
away.

With struct bus_type::remove returning void it's prevented that newly
implemented buses return an ignored error code and so don't anticipate
wrong expectations for driver authors.

Reviewed-by: Tom Rix <trix@redhat.com> (For fpga)
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com> (For drivers/s390 and drivers/vfio)
Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> (For ARM, Amba and related parts)
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org> (for sunxi-rsb)
Acked-by: Pali Rohár <pali@kernel.org>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> (for media)
Acked-by: Hans de Goede <hdegoede@redhat.com> (For drivers/platform)
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Juergen Gross <jgross@suse.com> (For xen)
Acked-by: Lee Jones <lee.jones@linaro.org> (For mfd)
Acked-by: Johannes Thumshirn <jth@kernel.org> (For mcb)
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> (For slimbus)
Acked-by: Kirti Wankhede <kwankhede@nvidia.com> (For vfio)
Acked-by: Maximilian Luz <luzmaximilian@gmail.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> (For ulpi and typec)
Acked-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> (For ipack)
Acked-by: Geoff Levand <geoff@infradead.org> (For ps3)
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com> (For thunderbolt)
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> (For intel_th)
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> (For pcmcia)
Acked-by: Rafael J. Wysocki <rafael@kernel.org> (For ACPI)
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> (rpmsg and apr)
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> (For intel-ish-hid)
Acked-by: Dan Williams <dan.j.williams@intel.com> (For CXL, DAX, and NVDIMM)
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> (For isa)
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (For firewire)
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> (For hid)
Acked-by: Thorsten Scherer <t.scherer@eckelmann.de> (For siox)
Acked-by: Sven Van Asbroeck <TheSven73@gmail.com> (For anybuss)
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> (For MMC)
Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Finn Thain <fthain@linux-m68k.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210713193522.1770306-6-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-21 11:53:42 +02:00
Allen Pais
914ab19e47 firmware: tee_bnxt: Release TEE shm, session, and context during kexec
Implement a .shutdown hook that will be called during a kexec operation
so that the TEE shared memory, session, and context that were set up
during .probe can be properly freed/closed.

Additionally, don't use dma-buf backed shared memory for the
fw_shm_pool. dma-buf backed shared memory cannot be reliably freed and
unregistered during a kexec operation even when tee_shm_free() is called
on the shm from a .shutdown hook. The problem occurs because
dma_buf_put() calls fput() which then uses task_work_add(), with the
TWA_RESUME parameter, to queue tee_shm_release() to be called before the
current task returns to user mode. However, the current task never
returns to user mode before the kexec completes so the memory is never
freed nor unregistered.

Use tee_shm_alloc_kernel_buf() to avoid dma-buf backed shared memory
allocation so that tee_shm_free() can directly call tee_shm_release().
This will ensure that the shm can be freed and unregistered during a
kexec operation.

Fixes: 246880958a ("firmware: broadcom: add OP-TEE based BNXT f/w manager")
Cc: stable@vger.kernel.org
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Co-developed-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-07-21 07:55:50 +02:00
Benjamin Herrenschmidt
4152433c39 arm64: efi: kaslr: Fix occasional random alloc (and boot) failure
The EFI stub random allocator used for kaslr on arm64 has a subtle
bug. In function get_entry_num_slots() which counts the number of
possible allocation "slots" for the image in a given chunk of free
EFI memory, "last_slot" can become negative if the chunk is smaller
than the requested allocation size.

The test "if (first_slot > last_slot)" doesn't catch it because
both first_slot and last_slot are unsigned.

I chose not to make them signed to avoid problems if this is ever
used on architectures where there are meaningful addresses with the
top bit set. Instead, fix it with an additional test against the
allocation size.

This can cause a boot failure in addition to a loss of randomisation
due to another bug in the arm64 stub fixed separately.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Fixes: 2ddbfc81ea ("efi: stub: add implementation of efi_random_alloc()")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-07-20 16:49:48 +02:00
Ingo Molnar
ddab1e71d2 EFI fixes for v5.14-rc2:
- Ensure that memblock reservations and IO reserved resources remain in
 sync when using the EFI memreserve feature.
 - Don't complain about invalid TPM final event log table if it is
 missing altogether.
 - Comment header fix for the stub.
 - Avoid a spurious warning when attempting to reserve firmware memory
 that is already reserved in the first place.
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Merge tag 'efi-urgent-for-v5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/urgent

Pull EFI fixes for v5.14-rc2 from Ard Biesheuvel:

" - Ensure that memblock reservations and IO reserved resources remain in
    sync when using the EFI memreserve feature.

  - Don't complain about invalid TPM final event log table if it is
    missing altogether.

  - Comment header fix for the stub.

  - Avoid a spurious warning when attempting to reserve firmware memory
    that is already reserved in the first place."

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2021-07-20 13:30:14 +02:00
Borislav Petkov
47e1e233e9 efi/mokvar: Reserve the table only if it is in boot services data
One of the SUSE QA tests triggered:

  localhost kernel: efi: Failed to lookup EFI memory descriptor for 0x000000003dcf8000

which comes from x86's version of efi_arch_mem_reserve() trying to
reserve a memory region. Usually, that function expects
EFI_BOOT_SERVICES_DATA memory descriptors but the above case is for the
MOKvar table which is allocated in the EFI shim as runtime services.

That lead to a fix changing the allocation of that table to boot services.

However, that fix broke booting SEV guests with that shim leading to
this kernel fix

  8d651ee9c7 ("x86/ioremap: Map EFI-reserved memory as encrypted for SEV")

which extended the ioremap hint to map reserved EFI boot services as
decrypted too.

However, all that wasn't needed, IMO, because that error message in
efi_arch_mem_reserve() was innocuous in this case - if the MOKvar table
is not in boot services, then it doesn't need to be reserved in the
first place because it is, well, in runtime services which *should* be
reserved anyway.

So do that reservation for the MOKvar table only if it is allocated
in boot services data. I couldn't find any requirement about where
that table should be allocated in, unlike the ESRT which allocation is
mandated to be done in boot services data by the UEFI spec.

Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-07-20 09:28:09 +02:00
John Stultz
b42000e4b8 firmware: qcom_scm: Allow qcom_scm driver to be loadable as a permenent module
Allow the qcom_scm driver to be loadable as a permenent module.

This still uses the "depends on QCOM_SCM || !QCOM_SCM" bit to
ensure that drivers that call into the qcom_scm driver are
also built as modules. While not ideal in some cases its the
only safe way I can find to avoid build errors without having
those drivers select QCOM_SCM and have to force it on (as
QCOM_SCM=n can be valid for those drivers).

Reviving this now that Saravana's fw_devlink defaults to on,
which should avoid loading troubles seen before.

Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Link: https://lore.kernel.org/r/20210707045320.529186-1-john.stultz@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-07-19 15:20:55 -05:00
Andy Shevchenko
71f6428332 ACPI: utils: Fix reference counting in for_each_acpi_dev_match()
Currently it's possible to iterate over the dangling pointer in case the device
suddenly disappears. This may happen becase callers put it at the end of a loop.

Instead, let's move that call inside acpi_dev_get_next_match_dev().

Fixes: 803abec64e ("media: ipu3-cio2: Add cio2-bridge to ipu3-cio2 driver")
Fixes: bf263f64e8 ("media: ACPI / bus: Add acpi_dev_get_next_match_dev() and helper macro")
Fixes: edbd1bc495 ("efi/dev-path-parser: Switch to use for_each_acpi_dev_match()")
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Daniel Scally <djrscally@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-07-19 16:22:01 +02:00
Junlin Yang
d775dab9a4 firmware: qcom_scm: remove a duplicative condition
Fixes coccicheck warnings:
./drivers/firmware/qcom_scm.c:324:20-22:
WARNING !A || A && B is equivalent to !A || B

Signed-off-by: Junlin Yang <yangjunlin@yulong.com>
Link: https://lore.kernel.org/r/20210311013235.1458-1-angkery@163.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-07-16 23:48:41 -05:00
Stephen Boyd
6bc4542863 firmware: qcom_scm: Mark string array const
Mark the qcom_scm_convention_names[] array const as it isn't changed.

Cc: Elliot Berman <eberman@codeaurora.org>
Fixes: 9a434cee77 ("firmware: qcom_scm: Dynamically support SMCCC and legacy conventions")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210222031431.3831189-1-swboyd@chromium.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-07-16 23:47:48 -05:00
Arnd Bergmann
2526112b68 ARM SCMI fixes for v5.14
A small set of fixes:
 - adding check for presence of probe while registering the driver to
   prevent NULL pointer access
 - dropping the duplicate check as the driver core already takes care of it
 - fix for possible scmi_linux_errmap buffer overflow
 - fix to avoid sensor message structure padding
 - fix the range check for the maximum number of pending SCMI messages
 - fix for various kernel-doc warnings
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Merge tag 'scmi-fixes-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

ARM SCMI fixes for v5.14

A small set of fixes:
- adding check for presence of probe while registering the driver to
  prevent NULL pointer access
- dropping the duplicate check as the driver core already takes care of it
- fix for possible scmi_linux_errmap buffer overflow
- fix to avoid sensor message structure padding
- fix the range check for the maximum number of pending SCMI messages
- fix for various kernel-doc warnings

* tag 'scmi-fixes-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Fix range check for the maximum number of pending messages
  firmware: arm_scmi: Avoid padding in sensor message structure
  firmware: arm_scmi: Fix kernel doc warnings about return values
  firmware: arm_scpi: Fix kernel doc warnings
  firmware: arm_scmi: Fix kernel doc warnings
  firmware: arm_scmi: Fix possible scmi_linux_errmap buffer overflow
  firmware: arm_scmi: Ensure drivers provide a probe function
  firmware: arm_scmi: Simplify device probe function on the bus

Link: https://lore.kernel.org/r/20210714165831.2617437-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-07-16 23:01:25 +02:00
Atish Patra
947228cb9f efi/libstub: Fix the efi_load_initrd function description
The soft_limit and hard_limit in the function efi_load_initrd describes
the preferred and max address of initrd loading location respectively.
However, the description wrongly describes it as the size of the
allocated memory.

Fix the function description.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-07-16 18:18:15 +02:00
Marc Zyngier
2bab693a60 firmware/efi: Tell memblock about EFI iomem reservations
kexec_load_file() relies on the memblock infrastructure to avoid
stamping over regions of memory that are essential to the survival
of the system.

However, nobody seems to agree how to flag these regions as reserved,
and (for example) EFI only publishes its reservations in /proc/iomem
for the benefit of the traditional, userspace based kexec tool.

On arm64 platforms with GICv3, this can result in the payload being
placed at the location of the LPI tables. Shock, horror!

Let's augment the EFI reservation code with a memblock_reserve() call,
protecting our dear tables from the secondary kernel invasion.

Reported-by: Moritz Fischer <mdf@kernel.org>
Tested-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-07-16 18:05:49 +02:00
Michal Suchanek
674a9f1f68 efi/tpm: Differentiate missing and invalid final event log table.
Missing TPM final event log table is not a firmware bug.

Clearly if providing event log in the old format makes the final event
log invalid it should not be provided at least in that case.

Fixes: b4f1874c62 ("tpm: check event log version before reading final events")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-07-16 18:04:55 +02:00
Cristian Marussi
bdb8742dc6 firmware: arm_scmi: Fix range check for the maximum number of pending messages
SCMI message headers carry a sequence number and such field is sized to
allow for MSG_TOKEN_MAX distinct numbers; moreover zero is not really an
acceptable maximum number of pending in-flight messages.

Fix accordingly the checks performed on the value exported by transports
in scmi_desc.max_msg

Link: https://lore.kernel.org/r/20210712141833.6628-3-cristian.marussi@arm.com
Reported-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
[sudeep.holla: updated the patch title and error message]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-13 11:42:20 +01:00
Cristian Marussi
187a002b07 firmware: arm_scmi: Avoid padding in sensor message structure
scmi_resp_sensor_reading_complete structure is meant to represent an
SCMI asynchronous reading complete message. The readings field with
a 64bit type forces padding and breaks reads in scmi_sensor_reading_get.

Split it in two adjacent 32bit readings_low/high subfields to avoid the
padding within the structure. Alternatively we could to mark the structure
packed.

Link: https://lore.kernel.org/r/20210628170042.34105-1-cristian.marussi@arm.com
Fixes: e2083d3673 ("firmware: arm_scmi: Add SCMI v3.0 sensors timestamped reads")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-13 11:42:14 +01:00
Cristian Marussi
b98cf55ec0 firmware: arm_scmi: Fix kernel doc warnings about return values
Kernel doc validation script still complains about the following:

|No description found for return value of 'scmi_get_protocol_device'
|No description found for return value of 'scmi_devm_notifier_register'
|No description found for return value of 'scmi_devm_notifier_unregister'

Fix adding missing Return kernel-doc statements.

Link: https://lore.kernel.org/r/20210712143504.33541-1-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-13 11:39:54 +01:00
Sudeep Holla
dd925db6f0 firmware: arm_ffa: Fix a possible ffa_linux_errmap buffer overflow
The ffa_linux_errmap buffer access index is supposed to range from 0-8
but it ranges from 1-9 instead. It reads one element out of bounds. It
also changes the success into -EINVAL though ffa_to_linux_errno is never
used in case of success, it is expected to work for success case too.

It is slightly confusing code as the negative of the error code
is used as index to the buffer. Fix it by negating it at the start and
make it more readable.

Link: https://lore.kernel.org/r/20210707134739.1869481-1-sudeep.holla@arm.com
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-12 14:20:08 +01:00
Sudeep Holla
ba684a31d3 firmware: arm_ffa: Fix the comment style
clang produces the following warning:

    drivers/firmware/arm_ffa/driver.c:123: warning: expecting
    prototype for FF(). Prototype was for FFA_PAGE_SIZE() instead

    This comment starts with '/**', but isn't a kernel-doc comment.
    Refer Documentation/doc-guide/kernel-doc.rst

Fix the same by removing the kernel-doc style comment here.

Link: https://lore.kernel.org/r/20210622162202.3485866-1-sudeep.holla@arm.com
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-12 14:20:08 +01:00
Uwe Kleine-König
e362547add firmware: arm_ffa: Simplify probe function
When the driver core calls the probe callback it already checked that
the devices match, so there is no need to call the match callback again.

Link: https://lore.kernel.org/r/20210621201652.127611-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-12 14:20:07 +01:00
Uwe Kleine-König
9274307146 firmware: arm_ffa: Ensure drivers provide a probe function
The bus probe callback calls the driver callback without further
checking. Better be safe than sorry and refuse registration of a driver
without a probe function to prevent a NULL pointer exception.

Link: https://lore.kernel.org/r/20210621201652.127611-1-u.kleine-koenig@pengutronix.de
Fixes: e781858488 ("firmware: arm_ffa: Add initial FFA bus support for device enumeration")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-12 14:20:06 +01:00
Sudeep Holla
7a691f16cc firmware: arm_scmi: Fix possible scmi_linux_errmap buffer overflow
The scmi_linux_errmap buffer access index is supposed to depend on the
array size to prevent element out of bounds access. It uses SCMI_ERR_MAX
to check bounds but that can mismatch with the array size. It also
changes the success into -EIO though scmi_linux_errmap is never used in
case of success, it is expected to work for success case too.

It is slightly confusing code as the negative of the error code
is used as index to the buffer. Fix it by negating it at the start and
make it more readable.

Link: https://lore.kernel.org/r/20210707135028.1869642-1-sudeep.holla@arm.com
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-12 14:16:19 +01:00
Sudeep Holla
5e469dac32 firmware: arm_scmi: Ensure drivers provide a probe function
The bus probe callback calls the driver callback without further
checking. Better be safe than sorry and refuse registration of a driver
without a probe function to prevent a NULL pointer exception.

Link: https://lore.kernel.org/r/20210624095059.4010157-2-sudeep.holla@arm.com
Fixes: 933c504424 ("firmware: arm_scmi: add scmi protocol bus to enumerate protocol devices")
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-12 14:16:19 +01:00
Sudeep Holla
38e0c99249 firmware: arm_scmi: Simplify device probe function on the bus
When the driver core calls the probe callback it already checked that
the devices match, so there is no need to call the match callback again.

Link: https://lore.kernel.org/r/20210624095059.4010157-1-sudeep.holla@arm.com
Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-07-12 14:16:18 +01:00
Linus Torvalds
071e5aceeb ARM: Drivers for 5.14
- Reset controllers: Adding support for Microchip Sparx5 Switch.
 
 - Memory controllers: ARM Primecell PL35x SMC memory controller
   driver cleanups and improvements.
 
 - i.MX SoC drivers: Power domain support for i.MX8MM and i.MX8MN.
 
 - Rockchip: RK3568 power domains support + DT binding updates,
   cleanups.
 
 - Qualcomm SoC drivers: Amend socinfo with more SoC/PMIC details,
   including support for MSM8226, MDM9607, SM6125 and SC8180X.
 
 - ARM FFA driver: "Firmware Framework for ARMv8-A", defining
   management interfaces and communication (including bus model)
   between partitions both in Normal and Secure Worlds.
 
 - Tegra Memory controller changes, including major rework to deal
   with identity mappings at boot and integration with ARM SMMU
   pieces.
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Merge tag 'arm-drivers-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM driver updates from Olof Johansson:

 - Reset controllers: Adding support for Microchip Sparx5 Switch.

 - Memory controllers: ARM Primecell PL35x SMC memory controller driver
   cleanups and improvements.

 - i.MX SoC drivers: Power domain support for i.MX8MM and i.MX8MN.

 - Rockchip: RK3568 power domains support + DT binding updates,
   cleanups.

 - Qualcomm SoC drivers: Amend socinfo with more SoC/PMIC details,
   including support for MSM8226, MDM9607, SM6125 and SC8180X.

 - ARM FFA driver: "Firmware Framework for ARMv8-A", defining management
   interfaces and communication (including bus model) between partitions
   both in Normal and Secure Worlds.

 - Tegra Memory controller changes, including major rework to deal with
   identity mappings at boot and integration with ARM SMMU pieces.

* tag 'arm-drivers-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (120 commits)
  firmware: turris-mox-rwtm: add marvell,armada-3700-rwtm-firmware compatible string
  firmware: turris-mox-rwtm: show message about HWRNG registration
  firmware: turris-mox-rwtm: fail probing when firmware does not support hwrng
  firmware: turris-mox-rwtm: report failures better
  firmware: turris-mox-rwtm: fix reply status decoding function
  soc: imx: gpcv2: add support for i.MX8MN power domains
  dt-bindings: add defines for i.MX8MN power domains
  firmware: tegra: bpmp: Fix Tegra234-only builds
  iommu/arm-smmu: Use Tegra implementation on Tegra186
  iommu/arm-smmu: tegra: Implement SID override programming
  iommu/arm-smmu: tegra: Detect number of instances at runtime
  dt-bindings: arm-smmu: Add Tegra186 compatible string
  firmware: qcom_scm: Add MDM9607 compatible
  soc: qcom: rpmpd: Add MDM9607 RPM Power Domains
  soc: renesas: Add support to read LSI DEVID register of RZ/G2{L,LC} SoC's
  soc: renesas: Add ARCH_R9A07G044 for the new RZ/G2L SoC's
  dt-bindings: soc: rockchip: drop unnecessary #phy-cells from grf.yaml
  memory: emif: remove unused frequency and voltage notifiers
  memory: fsl_ifc: fix leak of private memory on probe failure
  memory: fsl_ifc: fix leak of IO mapping on probe failure
  ...
2021-07-10 09:46:20 -07:00
Linus Torvalds
77d34a4683 ARM development updates for 5.14-rc1:
- Make it clear __swp_entry_to_pte() uses PTE_TYPE_FAULT
 - Updates for setting vmalloc size via command line to resolve an issue
   with the 8MiB hole not properly being accounted for, and clean up the
   code.
 - ftrace support for module PLTs
 - Spelling fixes
 - kbuild updates for removing generated files and pattern rules for
   generating files
 - Clang/llvm updates
 - Change the way the kernel is mapped, placing it in vmalloc space
   instead.
 - Remove arm_pm_restart from arm and aarch64.
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM development updates from Russell King:

 - Make it clear __swp_entry_to_pte() uses PTE_TYPE_FAULT

 - Updates for setting vmalloc size via command line to resolve an issue
   with the 8MiB hole not properly being accounted for, and clean up the
   code.

 - ftrace support for module PLTs

 - Spelling fixes

 - kbuild updates for removing generated files and pattern rules for
   generating files

 - Clang/llvm updates

 - Change the way the kernel is mapped, placing it in vmalloc space
   instead.

 - Remove arm_pm_restart from arm and aarch64.

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (29 commits)
  ARM: 9098/1: ftrace: MODULE_PLT: Fix build problem without DYNAMIC_FTRACE
  ARM: 9097/1: mmu: Declare section start/end correctly
  ARM: 9096/1: Remove arm_pm_restart()
  ARM: 9095/1: ARM64: Remove arm_pm_restart()
  ARM: 9094/1: Register with kernel restart handler
  ARM: 9093/1: drivers: firmwapsci: Register with kernel restart handler
  ARM: 9092/1: xen: Register with kernel restart handler
  ARM: 9091/1: Revert "mm: qsd8x50: Fix incorrect permission faults"
  ARM: 9090/1: Map the lowmem and kernel separately
  ARM: 9089/1: Define kernel physical section start and end
  ARM: 9088/1: Split KERNEL_OFFSET from PAGE_OFFSET
  ARM: 9087/1: kprobes: test-thumb: fix for LLVM_IAS=1
  ARM: 9086/1: syscalls: use pattern rules to generate syscall headers
  ARM: 9085/1: remove unneeded abi parameter to syscallnr.sh
  ARM: 9084/1: simplify the build rule of mach-types.h
  ARM: 9083/1: uncompress: atags_to_fdt: Spelling s/REturn/Return/
  ARM: 9082/1: [v2] mark prepare_page_table as __init
  ARM: 9079/1: ftrace: Add MODULE_PLTS support
  ARM: 9078/1: Add warn suppress parameter to arm_gen_branch_link()
  ARM: 9077/1: PLT: Move struct plt_entries definition to header
  ...
2021-07-06 11:52:58 -07:00
Linus Torvalds
eed0218e8c Char / Misc driver updates for 5.14-rc1
Here is the big set of char / misc and other driver subsystem updates
 for 5.14-rc1.  Included in here are:
 	- habanna driver updates
 	- fsl-mc driver updates
 	- comedi driver updates
 	- fpga driver updates
 	- extcon driver updates
 	- interconnect driver updates
 	- mei driver updates
 	- nvmem driver updates
 	- phy driver updates
 	- pnp driver updates
 	- soundwire driver updates
 	- lots of other tiny driver updates for char and misc drivers
 
 This is looking more and more like the "various driver subsystems mushed
 together" tree...
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
 "Here is the big set of char / misc and other driver subsystem updates
  for 5.14-rc1. Included in here are:

   - habanalabs driver updates

   - fsl-mc driver updates

   - comedi driver updates

   - fpga driver updates

   - extcon driver updates

   - interconnect driver updates

   - mei driver updates

   - nvmem driver updates

   - phy driver updates

   - pnp driver updates

   - soundwire driver updates

   - lots of other tiny driver updates for char and misc drivers

  This is looking more and more like the "various driver subsystems
  mushed together" tree...

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
  mcb: Use DEFINE_RES_MEM() helper macro and fix the end address
  PNP: moved EXPORT_SYMBOL so that it immediately followed its function/variable
  bus: mhi: pci-generic: Add missing 'pci_disable_pcie_error_reporting()' calls
  bus: mhi: Wait for M2 state during system resume
  bus: mhi: core: Fix power down latency
  intel_th: Wait until port is in reset before programming it
  intel_th: msu: Make contiguous buffers uncached
  intel_th: Remove an unused exit point from intel_th_remove()
  stm class: Spelling fix
  nitro_enclaves: Set Bus Master for the NE PCI device
  misc: ibmasm: Modify matricies to matrices
  misc: vmw_vmci: return the correct errno code
  siox: Simplify error handling via dev_err_probe()
  fpga: machxo2-spi: Address warning about unused variable
  lkdtm/heap: Add init_on_alloc tests
  selftests/lkdtm: Enable various testable CONFIGs
  lkdtm: Add CONFIG hints in errors where possible
  lkdtm: Enable DOUBLE_FAULT on all architectures
  lkdtm/heap: Add vmalloc linear overflow test
  lkdtm/bugs: XFAIL UNALIGNED_LOAD_STORE_WRITE
  ...
2021-07-05 13:42:16 -07:00
Linus Torvalds
71bd934101 Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
 "190 patches.

  Subsystems affected by this patch series: mm (hugetlb, userfaultfd,
  vmscan, kconfig, proc, z3fold, zbud, ras, mempolicy, memblock,
  migration, thp, nommu, kconfig, madvise, memory-hotplug, zswap,
  zsmalloc, zram, cleanups, kfence, and hmm), procfs, sysctl, misc,
  core-kernel, lib, lz4, checkpatch, init, kprobes, nilfs2, hfs,
  signals, exec, kcov, selftests, compress/decompress, and ipc"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits)
  ipc/util.c: use binary search for max_idx
  ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock
  ipc: use kmalloc for msg_queue and shmid_kernel
  ipc sem: use kvmalloc for sem_undo allocation
  lib/decompressors: remove set but not used variabled 'level'
  selftests/vm/pkeys: exercise x86 XSAVE init state
  selftests/vm/pkeys: refill shadow register after implicit kernel write
  selftests/vm/pkeys: handle negative sys_pkey_alloc() return code
  selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random
  kcov: add __no_sanitize_coverage to fix noinstr for all architectures
  exec: remove checks in __register_bimfmt()
  x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned
  hfsplus: report create_date to kstat.btime
  hfsplus: remove unnecessary oom message
  nilfs2: remove redundant continue statement in a while-loop
  kprobes: remove duplicated strong free_insn_page in x86 and s390
  init: print out unknown kernel parameters
  checkpatch: do not complain about positive return values starting with EPOLL
  checkpatch: improve the indented label test
  checkpatch: scripts/spdxcheck.py now requires python3
  ...
2021-07-02 12:08:10 -07:00
Andy Shevchenko
f39650de68 kernel.h: split out panic and oops helpers
kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out panic and
oops helpers.

There are several purposes of doing this:
- dropping dependency in bug.h
- dropping a loop by moving out panic_notifier.h
- unload kernel.h from something which has its own domain

At the same time convert users tree-wide to use new headers, although for
the time being include new header back to kernel.h to avoid twisted
indirected includes for existing users.

[akpm@linux-foundation.org: thread_info.h needs limits.h]
[andriy.shevchenko@linux.intel.com: ia64 fix]
  Link: https://lkml.kernel.org/r/20210520130557.55277-1-andriy.shevchenko@linux.intel.com

Link: https://lkml.kernel.org/r/20210511074137.33666-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Co-developed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Helge Deller <deller@gmx.de> # parisc
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-01 11:06:04 -07:00
Linus Torvalds
44b6ed4cfa Clang feature updates for v5.14-rc1
- Add CC_HAS_NO_PROFILE_FN_ATTR in preparation for PGO support in
   the face of the noinstr attribute, paving the way for PGO and fixing
   GCOV. (Nick Desaulniers)
 
 - x86_64 LTO coverage is expanded to 32-bit x86. (Nathan Chancellor)
 
 - Small fixes to CFI. (Mark Rutland, Nathan Chancellor)
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Merge tag 'clang-features-v5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull clang feature updates from Kees Cook:

 - Add CC_HAS_NO_PROFILE_FN_ATTR in preparation for PGO support in the
   face of the noinstr attribute, paving the way for PGO and fixing
   GCOV. (Nick Desaulniers)

 - x86_64 LTO coverage is expanded to 32-bit x86. (Nathan Chancellor)

 - Small fixes to CFI. (Mark Rutland, Nathan Chancellor)

* tag 'clang-features-v5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  qemu_fw_cfg: Make fw_cfg_rev_attr a proper kobj_attribute
  Kconfig: Introduce ARCH_WANTS_NO_INSTR and CC_HAS_NO_PROFILE_FN_ATTR
  compiler_attributes.h: cleanups for GCC 4.9+
  compiler_attributes.h: define __no_profile, add to noinstr
  x86, lto: Enable Clang LTO for 32-bit as well
  CFI: Move function_nocfi() into compiler.h
  MAINTAINERS: Add Clang CFI section
2021-06-30 14:33:25 -07:00
Nathan Chancellor
fca41af18e qemu_fw_cfg: Make fw_cfg_rev_attr a proper kobj_attribute
fw_cfg_showrev() is called by an indirect call in kobj_attr_show(),
which violates clang's CFI checking because fw_cfg_showrev()'s second
parameter is 'struct attribute', whereas the ->show() member of 'struct
kobj_structure' expects the second parameter to be of type 'struct
kobj_attribute'.

$ cat /sys/firmware/qemu_fw_cfg/rev
3

$ dmesg | grep "CFI failure"
[   26.016832] CFI failure (target: fw_cfg_showrev+0x0/0x8):

Fix this by converting fw_cfg_rev_attr to 'struct kobj_attribute' where
this would have been caught automatically by the incompatible pointer
types compiler warning. Update fw_cfg_showrev() accordingly.

Fixes: 75f3e8e47f ("firmware: introduce sysfs driver for QEMU's fw_cfg device")
Link: https://github.com/ClangBuiltLinux/linux/issues/1299
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210211194258.4137998-1-nathan@kernel.org
2021-06-29 13:25:20 -07:00
Linus Torvalds
9840cfcb97 arm64 updates for 5.14
- Optimise SVE switching for CPUs with 128-bit implementations.
 
  - Fix output format from SVE selftest.
 
  - Add support for versions v1.2 and 1.3 of the SMC calling convention.
 
  - Allow Pointer Authentication to be configured independently for
    kernel and userspace.
 
  - PMU driver cleanups for managing IRQ affinity and exposing event
    attributes via sysfs.
 
  - KASAN optimisations for both hardware tagging (MTE) and out-of-line
    software tagging implementations.
 
  - Relax frame record alignment requirements to facilitate 8-byte
    alignment with KASAN and Clang.
 
  - Cleanup of page-table definitions and removal of unused memory types.
 
  - Reduction of ARCH_DMA_MINALIGN back to 64 bytes.
 
  - Refactoring of our instruction decoding routines and addition of some
    missing encodings.
 
  - Move entry code moved into C and hardened against harmful compiler
    instrumentation.
 
  - Update booting requirements for the FEAT_HCX feature, added to v8.7
    of the architecture.
 
  - Fix resume from idle when pNMI is being used.
 
  - Additional CPU sanity checks for MTE and preparatory changes for
    systems where not all of the CPUs support 32-bit EL0.
 
  - Update our kernel string routines to the latest Cortex Strings
    implementation.
 
  - Big cleanup of our cache maintenance routines, which were confusingly
    named and inconsistent in their implementations.
 
  - Tweak linker flags so that GDB can understand vmlinux when using RELR
    relocations.
 
  - Boot path cleanups to enable early initialisation of per-cpu
    operations needed by KCSAN.
 
  - Non-critical fixes and miscellaneous cleanup.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "There's a reasonable amount here and the juicy details are all below.

  It's worth noting that the MTE/KASAN changes strayed outside of our
  usual directories due to core mm changes and some associated changes
  to some other architectures; Andrew asked for us to carry these [1]
  rather that take them via the -mm tree.

  Summary:

   - Optimise SVE switching for CPUs with 128-bit implementations.

   - Fix output format from SVE selftest.

   - Add support for versions v1.2 and 1.3 of the SMC calling
     convention.

   - Allow Pointer Authentication to be configured independently for
     kernel and userspace.

   - PMU driver cleanups for managing IRQ affinity and exposing event
     attributes via sysfs.

   - KASAN optimisations for both hardware tagging (MTE) and out-of-line
     software tagging implementations.

   - Relax frame record alignment requirements to facilitate 8-byte
     alignment with KASAN and Clang.

   - Cleanup of page-table definitions and removal of unused memory
     types.

   - Reduction of ARCH_DMA_MINALIGN back to 64 bytes.

   - Refactoring of our instruction decoding routines and addition of
     some missing encodings.

   - Move entry code moved into C and hardened against harmful compiler
     instrumentation.

   - Update booting requirements for the FEAT_HCX feature, added to v8.7
     of the architecture.

   - Fix resume from idle when pNMI is being used.

   - Additional CPU sanity checks for MTE and preparatory changes for
     systems where not all of the CPUs support 32-bit EL0.

   - Update our kernel string routines to the latest Cortex Strings
     implementation.

   - Big cleanup of our cache maintenance routines, which were
     confusingly named and inconsistent in their implementations.

   - Tweak linker flags so that GDB can understand vmlinux when using
     RELR relocations.

   - Boot path cleanups to enable early initialisation of per-cpu
     operations needed by KCSAN.

   - Non-critical fixes and miscellaneous cleanup"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (150 commits)
  arm64: tlb: fix the TTL value of tlb_get_level
  arm64: Restrict undef hook for cpufeature registers
  arm64/mm: Rename ARM64_SWAPPER_USES_SECTION_MAPS
  arm64: insn: avoid circular include dependency
  arm64: smp: Bump debugging information print down to KERN_DEBUG
  drivers/perf: fix the missed ida_simple_remove() in ddr_perf_probe()
  perf/arm-cmn: Fix invalid pointer when access dtc object sharing the same IRQ number
  arm64: suspend: Use cpuidle context helpers in cpu_suspend()
  PSCI: Use cpuidle context helpers in psci_cpu_suspend_enter()
  arm64: Convert cpu_do_idle() to using cpuidle context helpers
  arm64: Add cpuidle context save/restore helpers
  arm64: head: fix code comments in set_cpu_boot_mode_flag
  arm64: mm: drop unused __pa(__idmap_text_start)
  arm64: mm: fix the count comments in compute_indices
  arm64/mm: Fix ttbr0 values stored in struct thread_info for software-pan
  arm64: mm: Pass original fault address to handle_mm_fault()
  arm64/mm: Drop SECTION_[SHIFT|SIZE|MASK]
  arm64/mm: Use CONT_PMD_SHIFT for ARM64_MEMSTART_SHIFT
  arm64/mm: Drop SWAPPER_INIT_MAP_SIZE
  arm64: Conditionally configure PTR_AUTH key of the kernel.
  ...
2021-06-28 14:04:24 -07:00
Will Deacon
a4a49140ae Merge branch 'for-next/smccc' into for-next/core
Add support for versions v1.2 and 1.3 of the SMC calling convention.

* for-next/smccc:
  arm64: smccc: Support SMCCC v1.3 SVE register saving hint
  arm64: smccc: Add support for SMCCCv1.2 extended input/output registers
2021-06-24 14:06:54 +01:00
Olof Johansson
115484216b mvebu drivers for 5.14 (part 1)
Make the turris mox rwtm firmware more generic for Armada 3700 SoCs
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Merge tag 'mvebu-drivers-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into arm/drivers

mvebu drivers for 5.14 (part 1)

Make the turris mox rwtm firmware more generic for Armada 3700 SoCs

* tag 'mvebu-drivers-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu:
  firmware: turris-mox-rwtm: add marvell,armada-3700-rwtm-firmware compatible string

Link: https://lore.kernel.org/r/87bl802a2d.fsf@BL-laptop
Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-23 18:57:40 -07:00
Olof Johansson
4014f3177b mvebu fixes for 5.13 (part 1)
Few fixes for the Turris Mox rWTM firmware found on the Armada 3700
 SoCs.
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Merge tag 'mvebu-fixes-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into arm/drivers

mvebu fixes for 5.13 (part 1)

Few fixes for the Turris Mox rWTM firmware found on the Armada 3700
SoCs.

* tag 'mvebu-fixes-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu:
  firmware: turris-mox-rwtm: show message about HWRNG registration
  firmware: turris-mox-rwtm: fail probing when firmware does not support hwrng
  firmware: turris-mox-rwtm: report failures better
  firmware: turris-mox-rwtm: fix reply status decoding function

Link: https://lore.kernel.org/r/87eecx0w6s.fsf@BL-laptop
Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-23 18:57:23 -07:00
Marc Zyngier
c9223b6162 PSCI: Use cpuidle context helpers in psci_cpu_suspend_enter()
The PSCI CPU suspend code isn't aware of the PMR vs DAIF game,
resulting in a system that locks up if entering CPU suspend
with GICv3 pNMI enabled.

To save the day, teach the suspend code about our new cpuidle
context helpers, which will do everything that's required just
like the usual WFI cpuidle code.

This fixes my Altra system, which would otherwise lock-up at
boot time when booted with irqchip.gicv3_pseudo_nmi=1.

Tested-by: Valentin Schneider <valentin.schneider@arm.com>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/20210615111227.2454465-4-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2021-06-17 18:00:39 +01:00
Pali Rohár
90ae47215d firmware: turris-mox-rwtm: add marvell,armada-3700-rwtm-firmware compatible string
Add more generic compatible string 'marvell,armada-3700-rwtm-firmware' for
this driver, since it can also be used on other Armada 3720 devices.

Current compatible string 'cznic,turris-mox-rwtm' is kept for backward
compatibility.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2021-06-17 15:02:35 +02:00
Pali Rohár
fae2016099 firmware: turris-mox-rwtm: show message about HWRNG registration
Currently it is hard to determinate if on Armada 3720 device is HWRNG
by running kernel accessible or not. So print information message into
dmesg when HWRNG is available and registration was successful.

Fixes: 389711b374 ("firmware: Add Turris Mox rWTM firmware driver")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2021-06-17 14:55:09 +02:00
Pali Rohár
2eab59cf0d firmware: turris-mox-rwtm: fail probing when firmware does not support hwrng
When Marvell's rWTM firmware, which does not support the GET_RANDOM
command, is used, kernel prints an error message
  hwrng: no data available
every 10 seconds.

Fail probing of this driver if the rWTM firmware does not support the
GET_RANDOM command.

Fixes: 389711b374 ("firmware: Add Turris Mox rWTM firmware driver")
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2021-06-17 14:54:06 +02:00
Marek Behún
72f9988894 firmware: turris-mox-rwtm: report failures better
Report a notice level message if a command is not supported by the rWTM
firmware.

This should not be an error, merely a notice, because the firmware can
be used on boards that do not have manufacturing information burned.

Fixes: 389711b374 ("firmware: Add Turris Mox rWTM firmware driver")
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2021-06-17 14:53:03 +02:00
Marek Behún
e34e60253d firmware: turris-mox-rwtm: fix reply status decoding function
The status decoding function mox_get_status() currently contains an
incorrect check: if the error status is not MBOX_STS_SUCCESS, it always
returns -EIO, so the comparison to MBOX_STS_FAIL is never executed and
we don't get the actual error code sent by the firmware.

Fix this.

Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Fixes: 389711b374 ("firmware: Add Turris Mox rWTM firmware driver")
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2021-06-17 14:51:06 +02:00
Olof Johansson
e73153ba0c Arm Firmware Framework for ARMv8-A(FFA) interface driver
The Arm FFA specification describes a software architecture to
 leverages the virtualization extension to isolate software images
 provided by an ecosystem of vendors from each other and describes
 interfaces that standardize communication between the various software
 images including communication between images in the Secure world and
 Normal world. Any Hypervisor could use the FFA interfaces to enable
 communication between VMs it manages.
 
 The Hypervisor a.k.a Partition managers in FFA terminology can assign
 system resources(Memory regions, Devices, CPU cycles) to the partitions
 and manage isolation amongst them.
 
 This is the initial and minimal support for the FFA interface to enable
 communication between secure partitions and the normal world OS.
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Merge tag 'arm-ffa-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers

Arm Firmware Framework for ARMv8-A(FFA) interface driver

The Arm FFA specification describes a software architecture to
leverages the virtualization extension to isolate software images
provided by an ecosystem of vendors from each other and describes
interfaces that standardize communication between the various software
images including communication between images in the Secure world and
Normal world. Any Hypervisor could use the FFA interfaces to enable
communication between VMs it manages.

The Hypervisor a.k.a Partition managers in FFA terminology can assign
system resources(Memory regions, Devices, CPU cycles) to the partitions
and manage isolation amongst them.

This is the initial and minimal support for the FFA interface to enable
communication between secure partitions and the normal world OS.

* tag 'arm-ffa-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Add support for MEM_* interfaces
  firmware: arm_ffa: Setup in-kernel users of FFA partitions
  firmware: arm_ffa: Add support for SMCCC as transport to FFA driver
  firmware: arm_ffa: Add initial Arm FFA driver support
  firmware: arm_ffa: Add initial FFA bus support for device enumeration
  arm64: smccc: Add support for SMCCCv1.2 extended input/output registers

Link: https://lore.kernel.org/r/20210601095838.GA838783@bogus
Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-15 09:55:19 -07:00
Olof Johansson
5dad6db1c4 firmware: tegra: Changes for v5.14-rc1
These changes contain two minor fixes for the Tegra BPMP driver.
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Merge tag 'tegra-for-5.14-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers

firmware: tegra: Changes for v5.14-rc1

These changes contain two minor fixes for the Tegra BPMP driver.

* tag 'tegra-for-5.14-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  firmware: tegra: bpmp: Fix Tegra234-only builds
  firmware: tegra: Fix error return code in tegra210_bpmp_init()

Link: https://lore.kernel.org/r/20210611164437.3568059-3-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-15 08:36:02 -07:00
Olof Johansson
cda1138fcc Qualcomm driver updates for v5.14
In addition to fixing a kerneldoc issue in the qcom-ebi2 driver this
 populates socinfo with a range of platforms and PMICs and extends a few
 of the Qualcomm drivers bits of support for MSM8226, MDM9607, SM6125 and
 SC8180X.
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Merge tag 'qcom-drivers-for-5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/drivers

Qualcomm driver updates for v5.14

In addition to fixing a kerneldoc issue in the qcom-ebi2 driver this
populates socinfo with a range of platforms and PMICs and extends a few
of the Qualcomm drivers bits of support for MSM8226, MDM9607, SM6125 and
SC8180X.

* tag 'qcom-drivers-for-5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
  firmware: qcom_scm: Add MDM9607 compatible
  soc: qcom: rpmpd: Add MDM9607 RPM Power Domains
  soc: qcom: smd-rpm: Add MSM8226 compatible
  dt-bindings: soc: qcom: smd-rpm: Add MSM8226 compatible
  soc: qcom: socinfo: import PMIC IDs from pmic-spmi
  bus: qcom-ebi2: Fix incorrect documentation for '{slow,fast}_cfg'
  soc: qcom: socinfo: Add more IDs
  soc: qcom: rpmhpd: Add SC8180X
  dt-bindings: power: rpmpd: Add SC8180X to rpmpd binding
  dt-bindings: soc: qcom: smd-rpm: Document SM6125 compatible
  soc: qcom: smd-rpm: Add SM6125 compatible
  soc: qcom: socinfo: Add remaining IPQ6018 family ID-s
  soc: qcom: socinfo: Add missing SoC ID for SM6125

Link: https://lore.kernel.org/r/20210614223727.393159-1-bjorn.andersson@linaro.org
Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-15 08:17:12 -07:00
Greg Kroah-Hartman
db4e54aefd Linux 5.13-rc6
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Merge tag 'v5.13-rc6' into char-misc-next

We need the fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-14 08:59:06 +02:00
Guenter Roeck
2bb565bbdc ARM: 9093/1: drivers: firmwapsci: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart
directly. This enables support for replacing the PSCI restart handler
with a different handler if necessary for a specific board.

Select a priority of 129 to indicate a higher than default priority, but
keep it as low as possible since PSCI reset is known to fail on some
boards.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2021-06-13 18:16:45 +01:00
Olof Johansson
959cd8f125 ARM SCMI updates for v5.14
- Support for SCMI clocks from the SCMI power domains
 - Addition of checks for correct compatibles for shmem devicetree nodes
   that were found missing in the process of YAML schema conversion
 - Kconfig and associated build fix found when optee transport are being
   worked on
 - Couple of fixes and cleanups found as with work-in-progress virtio
   transport support
 
 The new transports(optee and virtio) themselves are still being worked on
 with ongoing reviews, they are not part of this yet
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Merge tag 'scmi-updates-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers

ARM SCMI updates for v5.14

- Support for SCMI clocks from the SCMI power domains
- Addition of checks for correct compatibles for shmem devicetree nodes
  that were found missing in the process of YAML schema conversion
- Kconfig and associated build fix found when optee transport are being
  worked on
- Couple of fixes and cleanups found as with work-in-progress virtio
  transport support

The new transports(optee and virtio) themselves are still being worked on
with ongoing reviews, they are not part of this yet

* tag 'scmi-updates-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Avoid multiple initialisations of hdr->protocol_id
  firmware: arm_scmi: Move reinit_completion from scmi_xfer_get to do_xfer
  firmware: arm_scmi: Add delayed response status check
  firmware: arm_scmi: Add compatibility checks for shmem node
  firmware: arm_scpi: Add compatibility checks for shmem node
  firmware: arm_scmi: Fix the build when CONFIG_MAILBOX is not selected
  firmware: arm_scmi: Reset Rx buffer to max size during async commands
  firmware: arm_scmi: Add SMCCC discovery dependency in Kconfig
  firmware: arm_scmi: Add clock management to the SCMI power domain

Link: https://lore.kernel.org/r/20210611075722.2813550-1-sudeep.holla@arm.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2021-06-12 08:42:29 -07:00
Thierry Reding
bd778b8939 firmware: tegra: bpmp: Fix Tegra234-only builds
The tegra186_bpmp_ops symbol is used on Tegra234, so make sure it's
available.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-06-11 13:31:51 +02:00
Konrad Dybcio
82a6cbf007 firmware: qcom_scm: Add MDM9607 compatible
Add a compatible for MDM9607. It uses the "legacy" calling
convention.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210131013058.54299-1-konrad.dybcio@somainline.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-06-10 11:26:45 -05:00
Sudeep Holla
61832b35b4 firmware: arm_scmi: Avoid multiple initialisations of hdr->protocol_id
Since the hdr->protocol_id is set from the scmi_protocol_instance handle
just before the transfer, there is no need to initialise the same in
scmi_xfer_get_init. Remove the unnecessary initialisations.

Link: https://lore.kernel.org/r/20210608140140.2042257-1-sudeep.holla@arm.com
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-06-08 16:06:12 +01:00
Cristian Marussi
e30d91d4ff firmware: arm_scmi: Move reinit_completion from scmi_xfer_get to do_xfer
Re-using timed out xfers in a loop can lead to issue if completion was
not properly reinitialized. Move reinit_completion from scmi_xfer_get to
do_xfer to avoid the issue.

Link: https://lore.kernel.org/r/20210606221232.33768-3-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
[sudeep.holla: moved reinit_completion instead of adding another one]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-06-08 16:04:54 +01:00
Cristian Marussi
f1748b1ee1 firmware: arm_scmi: Add delayed response status check
A successfully received delayed response could anyway report a failure at
the protocol layer in the message status field.

Add a check also for this error condition.

Link: https://lore.kernel.org/r/20210608103056.3388-1-cristian.marussi@arm.com
Fixes: 58ecdf03db ("firmware: arm_scmi: Add support for asynchronous commands and delayed response")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-06-08 15:10:14 +01:00
Sudeep Holla
507cd4d2c5 firmware: arm_scmi: Add compatibility checks for shmem node
The shared memory node used for communication between the firmware and
the OS should be compatible with "arm,scmi-shmem". Add the check for the
same while parsing the node before fetching the memory regions.

Link: https://lore.kernel.org/r/20210602073851.1005607-2-sudeep.holla@arm.com
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Cristian Marussi <cristian.marussi@arm.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jim Quinlan <jim2101024@gmail.com>
Cc: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-06-08 15:08:53 +01:00
Mark Brown
cfa7ff959a arm64: smccc: Support SMCCC v1.3 SVE register saving hint
SMCCC v1.2 requires that all SVE state be preserved over SMC calls which
introduces substantial overhead in the common case where there is no SVE
state in the registers. To avoid this SMCCC v1.3 introduces a flag which
allows the caller to say that there is no state that needs to be preserved
in the registers. Make use of this flag, setting it if the SMCCC version
indicates support for it and the TIF_ flags indicate that there is no live
SVE state in the registers, this avoids placing any constraints on when
SMCCC calls can be done or triggering extra saving and reloading of SVE
register state in the kernel.

This would be straightforward enough except for the rather entertaining
inline assembly we use to do SMCCC v1.1 calls to allow us to take advantage
of the limited number of registers it clobbers. Deal with this by having a
function which we call immediately before issuing the SMCCC call to make
our checks and set the flag. Using alternatives the overhead if SVE is
supported but not detected at runtime can be reduced to a single NOP.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210603184118.15090-1-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2021-06-08 14:00:12 +01:00
Sudeep Holla
ed7ecb8839 firmware: arm_scpi: Add compatibility checks for shmem node
The shared memory node used for communication between the firmware and
the OS should be compatible with one of the following:
	- amlogic,meson-gxbb-scp-shmem
	- amlogic,meson-axg-scp-shmem
	- arm,juno-scp-shmem
	- arm,scp-shmem
Add the check for the same while parsing the node before fetching the memory
regions.

Link: https://lore.kernel.org/r/20210602073851.1005607-1-sudeep.holla@arm.com
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-06-03 16:46:53 +01:00
Sudeep Holla
ab7766b728 firmware: arm_scmi: Fix the build when CONFIG_MAILBOX is not selected
0day CI kernel test robot reported following build error with randconfig

aarch64-linux-ld: drivers/firmware/arm_scmi/driver.o:(.rodata+0x1e0):
		undefined reference to `scmi_mailbox_desc'

Fix the error by adding CONFIG_MAILBOX dependency for scmi_mailbox_desc.

Link: https://lore.kernel.org/r/20210603072631.1660963-1-sudeep.holla@arm.com
Cc: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-06-03 16:46:41 +01:00
Cristian Marussi
0cb7af474e firmware: arm_scmi: Reset Rx buffer to max size during async commands
During an async commands execution the Rx buffer length is at first set
to max_msg_sz when the synchronous part of the command is first sent.
However once the synchronous part completes the transport layer waits
for the delayed response which will be processed using the same xfer
descriptor initially allocated. Since synchronous response received at
the end of the xfer will shrink the Rx buffer length to the effective
payload response length, it needs to be reset again.

Raise the Rx buffer length again to max_msg_sz before fetching the
delayed response to ensure full response is read correctly from the
shared memory.

Link: https://lore.kernel.org/r/20210601102421.26581-2-cristian.marussi@arm.com
Fixes: 58ecdf03db ("firmware: arm_scmi: Add support for asynchronous commands and delayed response")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
[sudeep.holla: moved reset to scmi_handle_response as it could race with
               do_xfer_with_response]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-06-02 21:50:12 +01:00
Etienne Carriere
c05b07963e firmware: arm_scmi: Add SMCCC discovery dependency in Kconfig
ARM_SCMI_PROTOCOL depends on either MAILBOX or HAVE_ARM_SMCCC_DISCOVERY,
not MAILBOX alone. Fix the depedency in Kconfig file and driver to
reflect the same.

Link: https://lore.kernel.org/r/20210521134055.24271-1-etienne.carriere@linaro.org
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
[sudeep.holla: Minor tweaks to subject and change log]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-06-02 11:26:13 +01:00
Zhen Lei
7fea67710e firmware: tegra: Fix error return code in tegra210_bpmp_init()
When call irq_get_irq_data() to get the IRQ's irq_data failed, an
appropriate error code -ENOENT should be returned. However, we directly
return 'err', which records the IRQ number instead of the error code.

Fixes: 139251fc22 ("firmware: tegra: add bpmp driver for Tegra210")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-06-01 17:06:41 +02:00
Greg Kroah-Hartman
2d06954e23 Merge 5.13-rc4 into char-misc-next
We need the char/misc fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-31 09:03:10 +02:00
Christophe JAILLET
d99247f9b5 firmware: stratix10-svc: Fix a resource leak in an error handling path
If an error occurs after a successful 'kfifo_alloc()' call, it must be
undone by a corresponding 'kfifo_free()' call, as already done in the
remove function.

While at it, move the 'platform_device_put()' call to this new error
handling path and explicitly return 0 in the success path.

Fixes: b5dc75c915 ("firmware: stratix10-svc: extend svc to support new RSU features")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/0ca3f3ab139c53e846804455a1e7599ee8ae896a.1621621271.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-27 14:50:34 +02:00
Sudeep Holla
cc2195fe53 firmware: arm_ffa: Add support for MEM_* interfaces
Most of the MEM_* APIs share the same parameters, so they can be
generalised. Currently only MEM_SHARE is implemented and the user space
interface for that is not added yet.

Link: https://lore.kernel.org/r/20210521151033.181846-6-sudeep.holla@arm.com
Tested-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-05-26 22:38:43 +01:00
Sudeep Holla
d0c0bce831 firmware: arm_ffa: Setup in-kernel users of FFA partitions
Parse the FFA nodes from the device-tree and register all the partitions
whose services will be used in the kernel.

In order to also enable in-kernel users of FFA interface, let us add
simple set of operations for such devices.

The in-kernel users are registered without the character device interface.

Link: https://lore.kernel.org/r/20210521151033.181846-5-sudeep.holla@arm.com
Tested-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-05-26 22:38:43 +01:00
Sudeep Holla
714be77e97 firmware: arm_ffa: Add support for SMCCC as transport to FFA driver
There are requests to keep the transport separate in order to allow
other possible transports like virtio. So let us keep the SMCCC transport
specific routines abstracted.

It is kept simple for now. Once we add another transport, we can develop
better abstraction.

Link: https://lore.kernel.org/r/20210521151033.181846-4-sudeep.holla@arm.com
Tested-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-05-26 22:36:46 +01:00
Sudeep Holla
3bbfe98710 firmware: arm_ffa: Add initial Arm FFA driver support
This just add a basic driver that sets up the transport(e.g. SMCCC),
checks the FFA version implemented, get the partition ID for self and
sets up the Tx/Rx buffers for communication.

Link: https://lore.kernel.org/r/20210521151033.181846-3-sudeep.holla@arm.com
Tested-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-05-26 22:36:46 +01:00
Sudeep Holla
e781858488 firmware: arm_ffa: Add initial FFA bus support for device enumeration
The Arm FF for Armv8-A specification has concept of endpoints or
partitions. In the Normal world, a partition could be a VM when
the Virtualization extension is enabled or the kernel itself.

In order to handle multiple partitions, we can create a FFA device for
each such partition on a dedicated FFA bus. Similarly, different drivers
requiring FFA transport can be registered on the same bus. We can match
the device and drivers using UUID. This is mostly for the in-kernel
users with FFA drivers.

Link: https://lore.kernel.org/r/20210521151033.181846-2-sudeep.holla@arm.com
Tested-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2021-05-26 22:36:46 +01:00
Ingo Molnar
267be9dbac EFI updates for v5.14
First microbatch of EFI updates - not a lot going on these days.
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Merge tag 'efi-next-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/core

Pull EFI updates for v5.14 from Ard Biesheuvel:

  "First microbatch of EFI updates - not a lot going on these days."

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2021-05-23 11:40:55 +02:00
Ingo Molnar
e169fba4f4 EFI fixes for v5.13-rc
A handful of low urgency EFI fixes accumulated over the past couple of
 months.
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Merge tag 'efi-urgent-for-v5.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/urgent

Pull EFI fixes for v5.13-rc from Ard Biesheuvel:

  "A handful of low urgency EFI fixes accumulated over the past couple of
   months."

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2021-05-23 11:39:02 +02:00