| Commit message (Collapse) | Author | Age | Files | Lines |
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Create the WMI bus device first so that it can be used
by the ACPI handlers.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231218192420.305411-5-W_Armin@gmx.de
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Use devres for cleaning up the ACPI handlers and the
WMI bus device to simplify the error handling.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231218192420.305411-4-W_Armin@gmx.de
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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When removing the ACPI notify/address space handlers, the WMI devices
are still active and might still depend on ACPI EC access or
WMI events.
Fix this by removing the ACPI handlers after all WMI devices
associated with an ACPI device have been removed.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231218192420.305411-3-W_Armin@gmx.de
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The variable "i" is always zero and only used in shift operations.
Remove it to make the code more readable.
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231218192420.305411-2-W_Armin@gmx.de
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Passing PMC_IDX_MAIN in pmc_core_pmc_add() adds only primary pmc to pmcdev.
Use pmc_idx instead to add all available pmcs.
Fixes: a01486dc4bb1 ("platform/x86/intel/pmc: Cleanup SSRAM discovery")
Signed-off-by: Rajvi Jingar <rajvi.jingar@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231216011702.1976408-1-rajvi.jingar@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Add Lunar Lake M PMT telemetry support.
Signed-off-by: Rajvi Jingar <rajvi.jingar@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231216005146.1735455-1-rajvi.jingar@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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There is a spelling mistake in a literal string. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231215112746.13752-1-colin.i.king@gmail.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Sometimes policy binary retrieved from the BIOS maybe incorrect that can
end up in failing to enable the Smart PC solution feature.
Use print_hex_dump_debug() to dump the policy binary in hex, so that we
debug the issues related to the binary even before sending that to TA.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-13-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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A policy binary is OS agnostic, and the same policies are expected to work
across the OSes. At times it becomes difficult to debug when the policies
inside the policy binaries starts to misbehave. Add a way to sideload such
policies independently to debug them via a debugfs entry.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-12-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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PMF driver sends constant inputs to TA which its gets via the other
subsystems in the kernel. To debug certain TA issues knowing what inputs
being sent to TA becomes critical. Add debug facility to the driver which
can isolate Smart PC and TA related issues.
Also, make source_as_str() as non-static function as this helper is
required outside of sps.c file.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-11-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Add amd_pmf prefix to source_as_str() function, so that the function name
does not look generic. As this is a helper function make it as non-static
so that it can be reused across multiple PMF features.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-10-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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PMF driver based on the output actions from the TA can request to update
the system states like entering s0i3, lock screen etc. by generating
an uevent. Based on the udev rules set in the userspace the event id
matching the uevent shall get updated accordingly using the systemctl.
Sample udev rules under Documentation/admin-guide/pmf.rst.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-9-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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P3T (Peak Package Power Limit) is a metric within the SMU controller
that can influence the power limits. Add support from the driver
to update P3T limits accordingly.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-8-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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PMF driver sends changing inputs from each subystem to TA for evaluating
the conditions in the policy binary.
Add initial support of plumbing in the PMF driver for Smart PC to get
information from other subsystems in the kernel.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-7-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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To sideload pmf policy binaries, the Smart PC Solution Builder provides a
debugfs file called "update_policy"; that gets created under a new debugfs
directory called "pb" and this new directory has to be associated with
existing parent directory for PMF driver called "amd_pmf".
In the current code structure, amd_pmf_dbgfs_register() is called after
amd_pmf_init_features(). This will not help when the Smart PC builder
feature has to be assoicated to the parent directory.
Hence change the order of amd_pmf_dbgfs_register() and call it before
amd_pmf_init_features() so that when the Smart PC init happens, it has the
parent debugfs directory to get itself hooked.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-6-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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PMF Policy binary is a encrypted and signed binary that will be part
of the BIOS. PMF driver via the ACPI interface checks the existence
of Smart PC bit. If the advertised bit is found, PMF driver walks
the acpi namespace to find out the policy binary size and the address
which has to be passed to the TA during the TA init sequence.
The policy binary is comprised of inputs (or the events) and outputs
(or the actions). With the PMF ecosystem, OEMs generate the policy
binary (or could be multiple binaries) that contains a supported set
of inputs and outputs which could be specifically carved out for each
usage segment (or for each user also) that could influence the system
behavior either by enriching the user experience or/and boost/throttle
power limits.
Once the TA init command succeeds, the PMF driver sends the changing
events in the current environment to the TA for a constant sampling
frequency time (the event here could be a lid close or open) and
if the policy binary has corresponding action built within it, the
TA sends the action for it in the subsequent enact command.
If the inputs sent to the TA has no output defined in the policy
binary generated by OEMs, there will be no action to be performed
by the PMF driver.
Example policies:
1) if slider is performance ; set the SPL to 40W
Here PMF driver registers with the platform profile interface and
when the slider position is changed, PMF driver lets the TA know
about this. TA sends back an action to update the Sustained
Power Limit (SPL). PMF driver updates this limit via the PMFW mailbox.
2) if user_away ; then lock the system
Here PMF driver hooks to the AMD SFH driver to know the user presence
and send the inputs to TA and if the condition is met, the TA sends
the action of locking the system. PMF driver generates a uevent and
based on the udev rule in the userland the system gets locked with
systemctl.
The intent here is to provide the OEM's to make a policy to lock the
system when the user is away ; but the userland can make a choice to
ignore it.
The OEMs will have an utility to create numerous such policies and
the policies shall be reviewed by AMD before signing and encrypting
them. Policies are shared between operating systems to have seemless user
experience.
Since all this action has to happen via the "amdtee" driver, currently
there is no caller for it in the kernel which can load the amdtee driver.
Without amdtee driver loading onto the system the "tee" calls shall fail
from the PMF driver. Hence an explicit MODULE_SOFTDEP has been added
to address this.
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-5-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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In the current code, the metrics table information was required only
for auto-mode or CnQF at a given time. Hence keeping the return type
of amd_pmf_set_dram_addr() as static made sense.
But with the addition of Smart PC builder feature, the metrics table
information has to be shared by the Smart PC also and this feature
resides outside of core.c.
To make amd_pmf_set_dram_addr() visible outside of core.c make it
as a non-static function and move the allocation of memory for
metrics table from amd_pmf_init_metrics_table() to amd_pmf_set_dram_addr()
as amd_pmf_set_dram_addr() is the common function to set the DRAM
address.
Add a suspend handler that can free up the allocated memory for getting
the metrics table information.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-4-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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PMF TA (Trusted Application) loads via the TEE environment into the
AMD ASP.
PMF-TA supports two commands:
1) Init: Initialize the TA with the PMF Smart PC policy binary and
start the policy engine. A policy is a combination of inputs and
outputs, where;
- the inputs are the changing dynamics of the system like the user
behaviour, system heuristics etc.
- the outputs, which are the actions to be set on the system which
lead to better power management and enhanced user experience.
PMF driver acts as a central manager in this case to supply the
inputs required to the TA (either by getting the information from
the other kernel subsystems or from userland)
2) Enact: Enact the output actions from the TA. The action could be
applying a new thermal limit to boost/throttle the power limits or
change system behavior.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-3-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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AMD PMF driver loads the PMF TA (Trusted Application) into the AMD
ASP's (AMD Security Processor) TEE (Trusted Execution Environment).
PMF Trusted Application is a secured firmware placed under
/lib/firmware/amdtee gets loaded only when the TEE environment is
initialized. Add the initial code path to build these pipes.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20231212014705.2017474-2-Shyam-sundar.S-k@amd.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Immutable branch between pdx86 amd wbrf branch and wifi / amdgpu due for the v6.8 merge window
platform-drivers-x86-amd-wbrf-v6.8-1: v6.7-rc1 + AMD WBRF support
for merging into the wifi subsys and amdgpu driver for 6.8.
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feature
Due to electrical and mechanical constraints in certain platform designs
there may be likely interference of relatively high-powered harmonics of
the (G-)DDR memory clocks with local radio module frequency bands used
by Wifi 6/6e/7.
To mitigate this, AMD has introduced a mechanism that devices can use to
notify active use of particular frequencies so that other devices can make
relative internal adjustments as necessary to avoid this resonance.
Co-developed-by: Evan Quan <quanliangl@hotmail.com>
Signed-off-by: Evan Quan <quanliangl@hotmail.com>
Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The design of the WMI chardev interface is broken:
- it assumes that WMI drivers are not instantiated twice
- it offers next to no abstractions, the WMI driver gets
a raw byte buffer
- it is only used by a single driver, something which is
unlikely to change
Since the only user (dell-smbios-wmi) has been migrated
to his own ioctl interface, remove it.
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231210202443.646427-6-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The WMI chardev API will be removed in the near future.
Reimplement the necessary bits used by this driver so
that userspace software depending on it does no break.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231210202443.646427-5-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Use devres version of __get_free_pages() to simplify the
error handling code.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231210202443.646427-4-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Users can already listen to ACPI WMI events through
the ACPI netlink interface. The old wmi_notify_debug()
interface also uses the deprecated GUID-based interface.
Remove it to make the event handling code more readable.
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231210202443.646427-3-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The functionality of dumping WDG entries is better provided by
userspace tools like "fwts wmi", which also does not suffer from
garbled printk output caused by pr_cont().
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231210202443.646427-2-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Back merge pdx86 fixes into pdx86/for-next for further WMI work
depending on some of the fixes.
platform-drivers-x86 for v6.7-3
Highlights:
- asus-wmi: Solve i8042 filter resource handling, input, and
suspend issues
- wmi: Skip zero instance WMI blocks to avoid issues with
some laptops
- mlxbf-bootctl: Differentiate dev/production keys
- platform/surface: Correct serdev related return value to avoid
leaking errno into userspace
- Error checking fixes
The following is an automated shortlog grouped by driver:
asus-wmi:
- Change q500a_i8042_filter() into a generic i8042-filter
- disable USB0 hub on ROG Ally before suspend
- Filter Volume key presses if also reported via atkbd
- Move i8042 filter install to shared asus-wmi code
mellanox:
- Add null pointer checks for devm_kasprintf()
- Check devm_hwmon_device_register_with_groups() return value
mlxbf-bootctl:
- correctly identify secure boot with development keys
surface: aggregator:
- fix recv_buf() return value
wmi:
- Skip blocks with zero instances
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Remove unused debug code inside #if 0 ... #endif.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231208134845.3900-1-ilpo.jarvinen@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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When a feature is read blocked, don't continue to read uncore information
and register with uncore core.
When the feature is write blocked, continue to offer read interface but
block setting uncore limits.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231204221740.3645130-6-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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When a feature is read blocked, don't continue to read SST information
and register with SST core.
When the feature is write blocked, continue to offer read interface for
SST parameters, but don't allow any operation to change state. A state
change results from SST level change, feature change or class of service
change.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231204221740.3645130-5-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Move TPMI ID definitions to common include file. In this way other
feature drivers don't have to redefine.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231204221740.3645130-4-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Modify the external interface tpmi_get_feature_status() to get read
and write blocked instead of locked and disabled. Since auxiliary device
is not created when disabled, no use of returning disabled state. Also
locked state is not useful as feature driver can't use locked state
in a meaningful way.
Using read and write state, feature driver can decide which operations
to restrict for that feature.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231204221740.3645130-3-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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If some TPMI features are disabled, don't create auxiliary devices. In
this way feature drivers will not load.
While creating auxiliary devices, call tpmi_read_feature_status() to
check feature state and return if the feature is disabled without
creating a device.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231204221740.3645130-2-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/a6b074b7ee37f3682da4b3f39ea40af97add64c2.1701726190.git.u.kleine-koenig@pengutronix.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/639b9ffc18422fe59125893bd7909e8a73cffb72.1701726190.git.u.kleine-koenig@pengutronix.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The spi_new_device() function returns NULL on error, it doesn't return
error pointers.
Fixes: 70505ea6de24 ("platform/x86: x86-android-tablets: Add support for SPI device instantiation")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/4b1b2395-c7c5-44a4-b0b0-6d091c7f46a2@moroto.mountain
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Expose the Die C6 counter on Meteor Lake.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-21-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Add a "die_c6_us_show" debugfs attribute. Reads the counter value using
Intel Platform Monitoring Technology (PMT) driver API. This counter is
useful for determining the idle residency of CPUs in the compute tile.
Also adds a missing forward declaration for punit_ep which was declared in
an earlier upstream commit but only used for the first time in this one.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-20-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Add support to read the low power mode requirements for Meteor Lake M and
Meteor Lake P.
Signed-off-by: Xi Pardee <xi.pardee@intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-19-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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On supported platforms, the low power mode (LPM) requirements for entering
each idle substate are described in Platform Monitoring Technology (PMT)
telemetry entries. Provide a function for platform code to attempt to find
and read the requirements from the telemetry entries.
Signed-off-by: Xi Pardee <xi.pardee@intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-18-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Update the substate_requirements attribute to display the requirements for
all the PMCs on a package.
Signed-off-by: Rajvi Jingar <rajvi.jingar@linux.intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-17-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The PMC SSRAM device contains counters that are structured in Intel
Platform Monitoring Technology (PMT) telemetry regions. Look for and
register these telemetry regions from the driver so that they may be read
using the Intel PMT ABI.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-16-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Instead of checking for a NULL regbase, use the return value from
pmc_core_ssram_init() to check if PMC discovery was successful. If not, use
the legacy enumeration method (which only works for the primary PMC).
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-15-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Clean up the code handling SSRAM discovery. Handle all resource allocation
and cleanup in pmc_core_ssram_get_pmc(). Return the error status from this
function but only fail the init if we fail to discover the primary PMC.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-14-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Currently, if the PMC SSRAM initialization fails, no error is returned and
the only indication is that a PMC device has not been created. Instead,
allow an error to be returned and handled directly by the caller.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-13-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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In order to setup a table of low power mode requirements for Meteor Lake,
pmc_core_get_low_power_modes() will need to be run from platform init code
so that the enabled modes are known, allowing the use of the
pmc_for_each_mode helper. Make the function global and call it from the
platform init code.
Signed-off-by: Xi Pardee <xi.pardee@intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-12-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Export symbols to allow access to Intel PMT Telemetry data on available
devices. Provides APIs to search, register, and read telemetry using a
kref managed pointer that serves as a handle to a telemetry endpoint.
To simplify searching for present devices, have the IDA start at 1
instead of 0 so that 0 can be used to indicate end of search.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-11-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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The PMT header is passed to several functions. Instead, store the header in
struct intel_pmt_entry which is also passed to these functions and shorten
the argument list. This simplifies the calls in preparation for later
changes. While here also perform a newline cleanup.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-10-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Some devices may emulate PCI VSEC capabilities in MMIO. In such cases the
BAR is not readable from a config space. Provide a field for drivers to
indicate the base address to be used.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-9-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Add and export intel_vsec_register() to allow the registration of Intel
extended capabilities from other drivers. Add check to look for memory
conflicts before registering a new capability. Since the vsec provider
may not be a PCI device, add a parent field to
intel_vsec_platform_info() to allow specifying the parent device for
device managed cleanup.
Signed-off-by: Gayatri Kammela <gayatri.kammela@linux.intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-8-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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