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Use a consistent 'tmp' as the variable name for the register
values during rmw when we don't deal with multiple registers
in parallel.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240422083457.23815-7-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
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Drop all the local variables for the DPLL dividers for vlv/chv
and just consult the state directly.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240422083457.23815-6-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
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The spreadsheet defines the PLL register block as having
the dwords in the following order:
block dwords offsets
PLL1 0x0-0x7 0x00-0x1f
PLL2 0x0-0x7 0x20-0x3f
PLL1ext 0x10-0x1f 0x40-0x5f
PLL2ext 0x10-0x1f 0x60-0x7f
So dword indexes 0x8-0xf don't even exist. Renumber
our register defines to match.
Note that the spreadsheet used hex numbering whereas our
defiens are in decimal. Perhaps we should change that?
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240422083457.23815-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
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VLV_PLL_DW9_BCAST is actually VLV_PCS_DW17_BCAST. The address
does kinda look like it goes to the PLL block on a first glance,
but broadcast is special and doesn't even exist for the PLL
(only PCS and TX have it).
The fact that we use a broadcast write here is a bit sketchy
IMO since we're now blasting the register to all PCS splines
across the whole PHY. So the PCS registers in the other channel
(ie. other pipe/port) will also be written. But I guess the
fact that we always write the same value should make this a nop
even if the other channel is already enabled (assuming the VBIOS/GOP
didn't screw up and use some other value...).
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240422083457.23815-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
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Our VLV_REF_DW13 is actually VLV_REF_DW11. Rename it.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240422083457.23815-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
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We don't use the result of the VLV_PCS01_DW8 read at all,
so don't read.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240422083457.23815-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
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Add CXL log related mailbox commands
- Add Get Log Capabilities command
- Add Get Supported Log Sub-List Commands command
- Add Clear Log command
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typec_register_partner() does not guarantee partner registration
to always succeed. In the event of failure, port->partner is set
to the error value or NULL. Given that port->partner validity is
not checked, this results in the following crash:
Unable to handle kernel NULL pointer dereference at virtual address xx
pc : run_state_machine+0x1bc8/0x1c08
lr : run_state_machine+0x1b90/0x1c08
..
Call trace:
run_state_machine+0x1bc8/0x1c08
tcpm_state_machine_work+0x94/0xe4
kthread_worker_fn+0x118/0x328
kthread+0x1d0/0x23c
ret_from_fork+0x10/0x20
To prevent the crash, check for port->partner validity before
derefencing it in all the call sites.
Cc: stable@vger.kernel.org
Fixes: c97cd0b4b54e ("usb: typec: tcpm: set initial svdm version based on pd revision")
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240427202812.3435268-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Before sending Enter Mode for an Alt Mode, there is a gap between Discover
Modes and the Alt Mode driver queueing the Enter Mode VDM for the port
partner to send a message to the port.
If this message results in unregistering Alt Modes such as in a DR_SWAP,
then the following deadlock can occur with respect to the DisplayPort Alt
Mode driver:
1. The DR_SWAP state holds port->lock. Unregistering the Alt Mode driver
results in a cancel_work_sync() that waits for the current dp_altmode_work
to finish.
2. dp_altmode_work makes a call to tcpm_altmode_enter. The deadlock occurs
because tcpm_queue_vdm_unlock attempts to hold port->lock.
Before attempting to grab the lock, ensure that the port is in a state
vdm_run_state_machine can run in. Alt Mode unregistration will not occur
in these states.
Fixes: 03eafcfb60c0 ("usb: typec: tcpm: Add tcpm_queue_vdm_unlocked() helper")
Cc: stable@vger.kernel.org
Signed-off-by: RD Babiera <rdbabiera@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240423202356.3372314-2-rdbabiera@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Check and unregister existing source caps in tcpm_register_source_caps
function before registering new ones. This change fixes following
warning when port partner resends source caps after negotiating PD contract
for the purpose of re-negotiation.
[ 343.135030][ T151] sysfs: cannot create duplicate filename '/devices/virtual/usb_power_delivery/pd1/source-capabilities'
[ 343.135071][ T151] Call trace:
[ 343.135076][ T151] dump_backtrace+0xe8/0x108
[ 343.135099][ T151] show_stack+0x18/0x24
[ 343.135106][ T151] dump_stack_lvl+0x50/0x6c
[ 343.135119][ T151] dump_stack+0x18/0x24
[ 343.135126][ T151] sysfs_create_dir_ns+0xe0/0x140
[ 343.135137][ T151] kobject_add_internal+0x228/0x424
[ 343.135146][ T151] kobject_add+0x94/0x10c
[ 343.135152][ T151] device_add+0x1b0/0x4c0
[ 343.135187][ T151] device_register+0x20/0x34
[ 343.135195][ T151] usb_power_delivery_register_capabilities+0x90/0x20c
[ 343.135209][ T151] tcpm_pd_rx_handler+0x9f0/0x15b8
[ 343.135216][ T151] kthread_worker_fn+0x11c/0x260
[ 343.135227][ T151] kthread+0x114/0x1bc
[ 343.135235][ T151] ret_from_fork+0x10/0x20
[ 343.135265][ T151] kobject: kobject_add_internal failed for source-capabilities with -EEXIST, don't try to register things with the same name in the same directory.
Fixes: 8203d26905ee ("usb: typec: tcpm: Register USB Power Delivery Capabilities")
Cc: linux-usb@vger.kernel.org
Cc: stable@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240424223227.1807844-1-amitsd@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When a Fast Role Swap control message attempt results in a transition
to ERROR_RECOVERY, the TCPC can still queue a TCPM_SOURCING_VBUS event.
If the event is queued but processed after the tcpm_reset_port() call
in the PORT_RESET state, then the following occurs:
1. tcpm_reset_port() calls tcpm_init_vbus() to reset the vbus sourcing and
sinking state
2. tcpm_pd_event_handler() turns VBUS on before the port is in the default
state.
3. The port resolves as a sink. In the SNK_DISCOVERY state,
tcpm_set_charge() cannot set vbus to charge.
Clear pd events within PORT_RESET to get rid of non-applicable events.
Fixes: b17dd57118fe ("staging: typec: tcpm: Improve role swap with non PD capable partners")
Cc: stable@vger.kernel.org
Signed-off-by: RD Babiera <rdbabiera@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240423202715.3375827-2-rdbabiera@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The decoder enum has a name conversion function defined now.
Use that instead of open coding.
Suggested-by: Navneet Singh <navneet.singh@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20230604-dcd-type2-upstream-v2-1-f740c47e7916@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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The CXL driver uses both functions phys_to_target_node() and
memory_add_physaddr_to_nid(). The x86 architecture relies on the
NUMA_KEEP_MEMINFO kernel option enabled for both functions to work
correct. Update Kconfig to make sure the option is always enabled for
the driver.
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Link: http://lore.kernel.org/r/65f8b191c0422_aa222941b@dwillia2-mobl3.amr.corp.intel.com.notmuch
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Robert Richter <rrichter@amd.com>
Link: https://lore.kernel.org/r/20240424154756.2152614-1-rrichter@amd.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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A mixed mode decoder is programmed with device physical addresses
that span both ram and pmem partitions of a memdev.
Linux does not support mixed mode decoders. The driver rejects
sysfs writes that try to set decoder mode to mixed, and if a
resource bieng allocated is not wholly contained in either the
pmem or ram partition of a memdev, it is also rejected. Basically,
the CXL region driver is not going to create regions with mixed
mode decoders, but the BIOS could.
If the kernel driver sees the mixed mode decoder, it will fail to
enable the region, and emit a dev_dbg() message.
A dev_dbg() is not noisy enough in this case. Change the message
to be a dev_warn() that explicitly says mixed mode is not supported.
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20230218013834.31237-1-alison.schofield@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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There's no debug message for invalid interleave granularity. This
makes it hard to debug related bugs. So, this is added in this patch.
Signed-off-by: Huang, Ying <ying.huang@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240402061016.388408-1-ying.huang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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Jonathan reported he has observed compiler warning when using running with
W=1 C=1 for cxl_security_ops that is declared as an extern in cxl/pmem.c.
Move to cxl.h to make it visible to all cxl sources.
Suggested-by: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Tested-by: Alison Schofield <alison.schofield@intel.com>
Link: https://lore.kernel.org/linux-cxl/167771196186.3285982.18283746206612049722.stgit@djiang5-mobl3.local/
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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tcpm_queue_vdm_unlocked queues VDMs over SOP regardless of input
parameter tx_sop_type. Fix tcpm_queue_vdm() call.
Fixes: 7e7877c55eb1 ("usb: typec: tcpm: add alt mode enter/exit/vdm support for sop'")
Cc: stable@vger.kernel.org
Signed-off-by: RD Babiera <rdbabiera@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240423202546.3374218-2-rdbabiera@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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models
Add support for NZXT Kraken 2023 (standard) and NZXT Kraken 2023 Elite
all-in-one CPU coolers. These models communicate identically to the NZXT
Kraken Z-series (Z53 code paths) in all cases except when writing the
fan curve, where setting additional bits in the report is needed.
Reviewed-by: Jonas Malaco <jonas@protocubo.io>
Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com>
Link: https://lore.kernel.org/r/20240428104812.14037-3-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Prepare for the support of new models, for which the relationship
between device name (for hwmon and debugfs) and kind (for the selection
of appropriate code paths within this driver) will no longer be 1:1.
Originally-from: Jonas Malaco <jonas@protocubo.io>
Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com>
Link: https://lore.kernel.org/r/20240428104812.14037-2-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Remove DMI tests for boards that are known to have issues with entering
configuration mode, as now we are testing the chips directly and no
longer need to rely on matching the board.
Leave the DMI table in place, for the nVIDIA board, and any future
expansions.
Signed-off-by: Frank Crawford <frank@crawford.emu.id.au>
Link: https://lore.kernel.org/r/20240428060653.2425296-5-frank@crawford.emu.id.au
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Major part of the change for the new method to avoid chipset issues.
The actual update does the following:
1) Lock the memory, but does not perform a SIO entry (previously it
would have performed an SIO entry).
2) Attempt to read the chipID. This should be safe no matter which
chip we have.
3) If step (2) fails, then perform SIO entry and retry chipID read. For
older chips and on failure it acts similarly to prior to this patch.
4) Set the sio_data->type, similar to previously.
5) If we have not performed an SIO entry, and this is not a chip type
with the NOCONF feature, then it will perform an SIO entry at this
point.
6) Proceed with setup as prior to this patch.
7) Any following access to the SIO registers will invoke the SIO entry
and SIO exit steps unless it is a chip with the NOCONF feature set.
This was set up in the previous patches in this patchset.
8) Update to the exit based on if it had performed a SIO entry or not.
Signed-off-by: Frank Crawford <frank@crawford.emu.id.au>
Link: https://lore.kernel.org/r/20240428060653.2425296-4-frank@crawford.emu.id.au
[groeck: s/intialised/initialized/]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Update the configuration mode entry code to allow conditional entry, and
apply to all calls.
Signed-off-by: Frank Crawford <frank@crawford.emu.id.au>
Link: https://lore.kernel.org/r/20240428060653.2425296-3-frank@crawford.emu.id.au
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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requirement
Rename previous definitions to match the new information that they are
preinitialised as enabled and should not receive codes to enter or exit
configuration mode.
Signed-off-by: Frank Crawford <frank@crawford.emu.id.au>
Link: https://lore.kernel.org/r/20240428060653.2425296-2-frank@crawford.emu.id.au
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add support for Infineon XDP710.This is a Hot-Swap Controller.
Signed-off-by: Peter Yin <peteryin.openbmc@gmail.com>
Link: https://lore.kernel.org/r/20240425153608.4003782-2-peteryin.openbmc@gmail.com
[groeck: s/microOhmRsense/micro_ohm_osense/g; declared array static]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add support for reading and writing the flow sensor pulses on
the Aquacomputer Octo. Implemented by David Flemstrom [1].
[1] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/95
Originally-from: David Flemstrom <david.flemstrom@gmail.com>
Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com>
Link: https://lore.kernel.org/r/20240417175037.32499-3-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add support for reading the flow sensor value on
the Aquacomputer Octo. Implemented by David Flemstrom [1].
[1] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/95
Originally-from: David Flemstrom <david.flemstrom@gmail.com>
Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com>
Link: https://lore.kernel.org/r/20240417175037.32499-2-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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The Exynos-based Google Tensor gs101 SoC has a DWC3 compatible USB
controller and can reuse the existing Exynos glue. Add the
google,gs101-dwusb3 compatible and associated driver data. Four clocks
are required for USB for this SoC:
* bus clock
* suspend clock
* Link interface AXI clock
* Link interface APB clock
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240423-usb-dwc3-gs101-v1-2-2f331f88203f@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This addition adds in the ability for the system to scan
the EC chip in the Lenovo ThinkStation systems to get the
current fan RPM speeds the Maximum speed value for each
fan also provides the CPU, DIMM other thermal statuses
Signed-off-by: David Ober <dober6023@gmail.com>
Link: https://lore.kernel.org/r/20240328121250.331146-1-dober6023@gmail.com
[groeck: Dropped pointless case statements]
[Colin King: Fixed spelling error accesssible -> accessible]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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While calculating frequency for the given period u64 numbers are
multiplied before division what can lead to overflow in theory so use
secure mul_u64_u64_div_u64() which handles overflow correctly.
Fixes: 329db102a26d ("pwm: meson: make full use of common clock framework")
Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: George Stark <gnstark@salutedevices.com>
Link: https://lore.kernel.org/r/20240425171253.2752877-4-gnstark@salutedevices.com
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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clk_round_rate() can return not only zero if requested frequency can not
be provided but also negative error code so add check for it too.
Also change type of variable holding clk_round_rate() result from
unsigned long to long. It's safe due to clk_round_rate() returns long.
Fixes: 329db102a26d ("pwm: meson: make full use of common clock framework")
Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
Signed-off-by: George Stark <gnstark@salutedevices.com>
Link: https://lore.kernel.org/r/20240425171253.2752877-3-gnstark@salutedevices.com
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Drop checking state argument for NULL pointer in meson_pwm_get_state()
due to it is called only from pwm core with always valid arguments.
Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
Signed-off-by: George Stark <gnstark@salutedevices.com>
Link: https://lore.kernel.org/r/20240425171253.2752877-2-gnstark@salutedevices.com
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Introduce a new compatible support in the Amlogic PWM driver.
The PWM HW is actually the same for all SoCs supported so far. A specific
compatible is needed only because the clock sources of the PWMs are
hard-coded in the driver.
It is better to have the clock source described in DT but this changes the
bindings so a new compatible must be introduced.
When all supported platform have migrated to the new compatible, support
for the legacy ones may be removed from the driver.
The addition of this new compatible makes the old ones obsolete, as
described in the DT documentation.
Adding a callback to setup the clock will also make it easier to add
support for the new PWM HW found in a1, s4, c3 and t7 SoC families.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20240221151154.26452-6-jbrunet@baylibre.com
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Since commit b0cde62e4c54 ("clk: Add a devm variant of
clk_rate_exclusive_get()") the clk subsystem provides
devm_clk_rate_exclusive_get(). Replace the open coded implementation by
the new function.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/8e1a5151a7bcd455996c873bb3d13ab86def3490.1710078146.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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&pdev->dev is used several times in bcm2835_pwm_probe(). Introduce a
local variable to simplify all usages.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/3f302472e30e21c7ef5624a1d0a2890d9fdf3c7f.1710078146.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Instead of looping over increasing values for the prescaler and testing
if it's big enough, calculate the value using a single division.
Link: https://lore.kernel.org/r/498a44b313a6c0a84ccddd03cd67aadaaaf7daf2.1710711976.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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stm32_pwm_config() took the duty_cycle and period values with the type
int, however stm32_pwm_apply() passed u64 values there. Expand the
function parameters to u64 to not discard relevant bits and adapt the
calculations to the wider type.
To ensure the calculations won't overflow, check in .probe() the input
clk doesn't run faster than 1 GHz.
Link: https://lore.kernel.org/r/06b4a650a608d0887d934c1b2b8919e0f78e4db2.1710711976.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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While mathematically it's ok to calculate the number of cyles for the
duty cycle as:
duty_cycles = period_cycles * duty_ns / period_ns
this doesn't always give the right result when doing integer math. This
is best demonstrated using an example: With the input clock running at
208877930 Hz a request for duty_cycle = 383 ns and period = 49996 ns
results in
period_cycles = clkrate * period_ns / NSEC_PER_SEC = 10443.06098828
Now calculating duty_cycles with the above formula gives:
duty_cycles = 10443.06098828 * 383 / 49996 = 80.00024719
However with period_cycle truncated to an integer results in:
duty_cycles = 10443 * 383 / 49996 = 79.99977998239859
So while a value of (a little more than) 80 would be the right result,
only 79 is used here. The problem here is that 14443 is a rounded result
that should better not be used to do further math. So to fix that use
the exact formular similar to how period_cycles is calculated.
Link: https://lore.kernel.org/r/7628ecd8a7538aa5a7397f0fc4199a077168e8a6.1710711976.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Giving an indication about the problem if probing a device fails is a
nice move. Do that for the stm32 pwm driver.
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20240315145443.982807-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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After assigning chip = pwm->chip; the compiler is free to assume that
pwm is non-NULL and so can optimize out the check for pwm against NULL.
While it's probably a programming error to pass a NULL pointer to
pwm_put() this shouldn't be dropped without careful consideration and
wasn't intended.
So assign chip only after the NULL check.
Reported-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/66a6f562-1fdd-4e45-995a-e7995432aa0c@baylibre.com
Fixes: 4c56b1434b81 ("pwm: Add a struct device to struct pwm_chip")
Link: https://lore.kernel.org/r/20240329101648.544155-2-u.kleine-koenig@pengutronix.de
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Correctly set the length of the drm_event to the size of the structure
that's actually used.
The length of the drm_event was set to the parent structure instead of
to the drm_vmw_event_fence which is supposed to be read. drm_read
uses the length parameter to copy the event to the user space thus
resuling in oob reads.
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Fixes: 8b7de6aa8468 ("vmwgfx: Rework fence event action")
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-23566
Cc: David Airlie <airlied@gmail.com>
CC: Daniel Vetter <daniel@ffwll.ch>
Cc: Zack Rusin <zack.rusin@broadcom.com>
Cc: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: <stable@vger.kernel.org> # v3.4+
Reviewed-by: Maaz Mombasawala <maaz.mombasawala@broadcom.com>
Reviewed-by: Martin Krastev <martin.krastev@broadcom.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425192748.1761522-1-zack.rusin@broadcom.com
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PSC controller has a limitation that it can only power-up the second
core when the first core is in ON state. Power-state for core0 should be
equal to or higher than core1.
Therefore, prevent core1 from powering up before core0 during the start
process from sysfs. Similarly, prevent core0 from shutting down before
core1 has been shut down from sysfs.
Fixes: 6dedbd1d5443 ("remoteproc: k3-r5: Add a remoteproc driver for R5F subsystem")
Signed-off-by: Beleswar Padhi <b-padhi@ti.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240430105307.1190615-3-b-padhi@ti.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
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PSC controller has a limitation that it can only power-up the second core
when the first core is in ON state. Power-state for core0 should be equal
to or higher than core1, else the kernel is seen hanging during rproc
loading.
Make the powering up of cores sequential, by waiting for the current core
to power-up before proceeding to the next core, with a timeout of 2sec.
Add a wait queue event in k3_r5_cluster_rproc_init call, that will wait
for the current core to be released from reset before proceeding with the
next core.
Fixes: 6dedbd1d5443 ("remoteproc: k3-r5: Add a remoteproc driver for R5F subsystem")
Signed-off-by: Apurva Nandan <a-nandan@ti.com>
Signed-off-by: Beleswar Padhi <b-padhi@ti.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240430105307.1190615-2-b-padhi@ti.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
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Currently we allocate all 3 levels of radix3 page tables using
nvkm_gsp_mem_ctor(), which uses dma_alloc_coherent() for allocating all of
the relevant memory. This can end up failing in scenarios where the system
has very high memory fragmentation, and we can't find enough contiguous
memory to allocate level 2 of the page table.
Currently, this can result in runtime PM issues on systems where memory
fragmentation is high - as we'll fail to allocate the page table for our
suspend/resume buffer:
kworker/10:2: page allocation failure: order:7, mode:0xcc0(GFP_KERNEL),
nodemask=(null),cpuset=/,mems_allowed=0
CPU: 10 PID: 479809 Comm: kworker/10:2 Not tainted
6.8.6-201.ChopperV6.fc39.x86_64 #1
Hardware name: SLIMBOOK Executive/Executive, BIOS N.1.10GRU06 02/02/2024
Workqueue: pm pm_runtime_work
Call Trace:
<TASK>
dump_stack_lvl+0x64/0x80
warn_alloc+0x165/0x1e0
? __alloc_pages_direct_compact+0xb3/0x2b0
__alloc_pages_slowpath.constprop.0+0xd7d/0xde0
__alloc_pages+0x32d/0x350
__dma_direct_alloc_pages.isra.0+0x16a/0x2b0
dma_direct_alloc+0x70/0x270
nvkm_gsp_radix3_sg+0x5e/0x130 [nouveau]
r535_gsp_fini+0x1d4/0x350 [nouveau]
nvkm_subdev_fini+0x67/0x150 [nouveau]
nvkm_device_fini+0x95/0x1e0 [nouveau]
nvkm_udevice_fini+0x53/0x70 [nouveau]
nvkm_object_fini+0xb9/0x240 [nouveau]
nvkm_object_fini+0x75/0x240 [nouveau]
nouveau_do_suspend+0xf5/0x280 [nouveau]
nouveau_pmops_runtime_suspend+0x3e/0xb0 [nouveau]
pci_pm_runtime_suspend+0x67/0x1e0
? __pfx_pci_pm_runtime_suspend+0x10/0x10
__rpm_callback+0x41/0x170
? __pfx_pci_pm_runtime_suspend+0x10/0x10
rpm_callback+0x5d/0x70
? __pfx_pci_pm_runtime_suspend+0x10/0x10
rpm_suspend+0x120/0x6a0
pm_runtime_work+0x98/0xb0
process_one_work+0x171/0x340
worker_thread+0x27b/0x3a0
? __pfx_worker_thread+0x10/0x10
kthread+0xe5/0x120
? __pfx_kthread+0x10/0x10
ret_from_fork+0x31/0x50
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1b/0x30
Luckily, we don't actually need to allocate coherent memory for the page
table thanks to being able to pass the GPU a radix3 page table for
suspend/resume data. So, let's rewrite nvkm_gsp_radix3_sg() to use the sg
allocator for level 2. We continue using coherent allocations for lvl0 and
1, since they only take a single page.
V2:
* Don't forget to actually jump to the next scatterlist when we reach the
end of the scatterlist we're currently on when writing out the page table
for level 2
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Ben Skeggs <bskeggs@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240429182318.189668-2-lyude@redhat.com
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|
Currently, enabling SG_DEBUG in the kernel will cause nouveau to hit a
BUG() on startup:
kernel BUG at include/linux/scatterlist.h:187!
invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
CPU: 7 PID: 930 Comm: (udev-worker) Not tainted 6.9.0-rc3Lyude-Test+ #30
Hardware name: MSI MS-7A39/A320M GAMING PRO (MS-7A39), BIOS 1.I0 01/22/2019
RIP: 0010:sg_init_one+0x85/0xa0
Code: 69 88 32 01 83 e1 03 f6 c3 03 75 20 a8 01 75 1e 48 09 cb 41 89 54
24 08 49 89 1c 24 41 89 6c 24 0c 5b 5d 41 5c e9 7b b9 88 00 <0f> 0b 0f 0b
0f 0b 48 8b 05 5e 46 9a 01 eb b2 66 66 2e 0f 1f 84 00
RSP: 0018:ffffa776017bf6a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffa77600d87000 RCX: 000000000000002b
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffa77680d87000
RBP: 000000000000e000 R08: 0000000000000000 R09: 0000000000000000
R10: ffff98f4c46aa508 R11: 0000000000000000 R12: ffff98f4c46aa508
R13: ffff98f4c46aa008 R14: ffffa77600d4a000 R15: ffffa77600d4a018
FS: 00007feeb5aae980(0000) GS:ffff98f5c4dc0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f22cb9a4520 CR3: 00000001043ba000 CR4: 00000000003506f0
Call Trace:
<TASK>
? die+0x36/0x90
? do_trap+0xdd/0x100
? sg_init_one+0x85/0xa0
? do_error_trap+0x65/0x80
? sg_init_one+0x85/0xa0
? exc_invalid_op+0x50/0x70
? sg_init_one+0x85/0xa0
? asm_exc_invalid_op+0x1a/0x20
? sg_init_one+0x85/0xa0
nvkm_firmware_ctor+0x14a/0x250 [nouveau]
nvkm_falcon_fw_ctor+0x42/0x70 [nouveau]
ga102_gsp_booter_ctor+0xb4/0x1a0 [nouveau]
r535_gsp_oneinit+0xb3/0x15f0 [nouveau]
? srso_return_thunk+0x5/0x5f
? srso_return_thunk+0x5/0x5f
? nvkm_udevice_new+0x95/0x140 [nouveau]
? srso_return_thunk+0x5/0x5f
? srso_return_thunk+0x5/0x5f
? ktime_get+0x47/0xb0
? srso_return_thunk+0x5/0x5f
nvkm_subdev_oneinit_+0x4f/0x120 [nouveau]
nvkm_subdev_init_+0x39/0x140 [nouveau]
? srso_return_thunk+0x5/0x5f
nvkm_subdev_init+0x44/0x90 [nouveau]
nvkm_device_init+0x166/0x2e0 [nouveau]
nvkm_udevice_init+0x47/0x70 [nouveau]
nvkm_object_init+0x41/0x1c0 [nouveau]
nvkm_ioctl_new+0x16a/0x290 [nouveau]
? __pfx_nvkm_client_child_new+0x10/0x10 [nouveau]
? __pfx_nvkm_udevice_new+0x10/0x10 [nouveau]
nvkm_ioctl+0x126/0x290 [nouveau]
nvif_object_ctor+0x112/0x190 [nouveau]
nvif_device_ctor+0x23/0x60 [nouveau]
nouveau_cli_init+0x164/0x640 [nouveau]
nouveau_drm_device_init+0x97/0x9e0 [nouveau]
? srso_return_thunk+0x5/0x5f
? pci_update_current_state+0x72/0xb0
? srso_return_thunk+0x5/0x5f
nouveau_drm_probe+0x12c/0x280 [nouveau]
? srso_return_thunk+0x5/0x5f
local_pci_probe+0x45/0xa0
pci_device_probe+0xc7/0x270
really_probe+0xe6/0x3a0
__driver_probe_device+0x87/0x160
driver_probe_device+0x1f/0xc0
__driver_attach+0xec/0x1f0
? __pfx___driver_attach+0x10/0x10
bus_for_each_dev+0x88/0xd0
bus_add_driver+0x116/0x220
driver_register+0x59/0x100
? __pfx_nouveau_drm_init+0x10/0x10 [nouveau]
do_one_initcall+0x5b/0x320
do_init_module+0x60/0x250
init_module_from_file+0x86/0xc0
idempotent_init_module+0x120/0x2b0
__x64_sys_finit_module+0x5e/0xb0
do_syscall_64+0x83/0x160
? srso_return_thunk+0x5/0x5f
entry_SYSCALL_64_after_hwframe+0x71/0x79
RIP: 0033:0x7feeb5cc20cd
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89
f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0
ff ff 73 01 c3 48 8b 0d 1b cd 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffcf220b2c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 000055fdd2916aa0 RCX: 00007feeb5cc20cd
RDX: 0000000000000000 RSI: 000055fdd29161e0 RDI: 0000000000000035
RBP: 00007ffcf220b380 R08: 00007feeb5d8fb20 R09: 00007ffcf220b310
R10: 000055fdd2909dc0 R11: 0000000000000246 R12: 000055fdd29161e0
R13: 0000000000020000 R14: 000055fdd29203e0 R15: 000055fdd2909d80
</TASK>
We hit this when trying to initialize firmware of type
NVKM_FIRMWARE_IMG_DMA because we allocate our memory with
dma_alloc_coherent, and DMA allocations can't be turned back into memory
pages - which a scatterlist needs in order to map them.
So, fix this by allocating the memory with vmalloc instead().
V2:
* Fixup explanation as the prior one was bogus
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Cc: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20240429182318.189668-1-lyude@redhat.com
|
|
The SCP on different chips will require different DRAM sizes and IPI
shared buffer sizes based on varying requirements.
Signed-off-by: Olivia Wen <olivia.wen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240430011534.9587-4-olivia.wen@mediatek.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
|
|
MT8188 SCP has two RISC-V cores which is similar to MT8195 but without
L1TCM. We've added MT8188-specific functions to configure L1TCM in
multicore setups.
Signed-off-by: Olivia Wen <olivia.wen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240430011534.9587-3-olivia.wen@mediatek.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
|
|
Add helper i40e_vsi_reconfig_tc(vsi) that configures TC
for given VSI using previously stored TC bitmap.
Effectively replaces open-coded patterns:
enabled_tc = vsi->tc_config.enabled_tc;
vsi->tc_config.enabled_tc = 0;
i40e_vsi_config_tc(vsi, enabled_tc);
Reviewed-by: Michal Schmidt <mschmidt@redhat.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
|
|
Add a helper to access main VEB:
i40e_pf_get_main_veb(pf) replaces 'pf->veb[pf->lan_veb]'
Reviewed-by: Michal Schmidt <mschmidt@redhat.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
|
|
In the driver code there are 3 types of checks whether given
VSI is main or not:
1. vsi->type ==/!= I40E_VSI_MAIN
2. vsi ==/!= pf->vsi[pf->lan_vsi]
3. vsi->seid ==/!= pf->vsi[pf->lan_vsi]->seid
All of them are equivalent and can be consolidated. Convert cases
2 and 3 to case 1.
Reviewed-by: Michal Schmidt <mschmidt@redhat.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
|
|
Add simple helper i40e_pf_get_main_vsi(pf) to access main VSI
that replaces pattern 'pf->vsi[pf->lan_vsi]'
Reviewed-by: Michal Schmidt <mschmidt@redhat.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
|
