diff options
| author | Alexander Duyck <alexander.h.duyck@linux.intel.com> | 2020-10-28 18:55:34 -0700 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2020-11-04 11:14:12 +0000 |
| commit | e2729113ce66d8d21f729b41bc3ed3feaf1acf69 (patch) | |
| tree | b9b9845c6a0f579e86357a274e7b61f45b9930d7 /drivers/platform/x86/Kconfig | |
| parent | 4f8217d5b0ca8ace78a27dc371b87697eedc421d (diff) | |
platform/x86: Intel PMT class driver
Intel Platform Monitoring Technology is meant to provide a common way to
access telemetry and system metrics.
Register mappings are not provided by the driver. Instead, a GUID is read
from a header for each endpoint. The GUID identifies the device and is to
be used with an XML, provided by the vendor, to discover the available set
of metrics and their register mapping. This allows firmware updates to
modify the register space without needing to update the driver every time
with new mappings. Firmware writes a new GUID in this case to specify the
new mapping. Software tools with access to the associated XML file can
then interpret the changes.
The module manages access to all Intel PMT endpoints on a system,
independent of the device exporting them. It creates an intel_pmt class
to manage the devices. For each telemetry endpoint, sysfs files provide
GUID and size information as well as a pointer to the parent device the
telemetry came from. Software may discover the association between
endpoints and devices by iterating through the list in sysfs, or by looking
for the existence of the class folder under the device of interest. A
binary sysfs attribute of the same name allows software to then read or map
the telemetry space for direct access.
Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/platform/x86/Kconfig')
| -rw-r--r-- | drivers/platform/x86/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 0d91d136bc3b..7d168a434d05 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -1362,6 +1362,18 @@ config INTEL_PMC_CORE - LTR Ignore - MPHY/PLL gating status (Sunrisepoint PCH only) +config INTEL_PMT_CLASS + tristate "Intel Platform Monitoring Technology (PMT) Class driver" + help + The Intel Platform Monitoring Technology (PMT) class driver provides + the basic sysfs interface and file hierarchy uses by PMT devices. + + For more information, see: + <file:Documentation/ABI/testing/sysfs-class-intel_pmt> + + To compile this driver as a module, choose M here: the module + will be called intel_pmt_class. + config INTEL_PUNIT_IPC tristate "Intel P-Unit IPC Driver" help |