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Use Software Package Data Exchange (SPDX) to indicate license for each
file that is unique to skiboot.
At the same time, ensure the (C) who and years are correct.
See https://spdx.org/
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
[oliver: Added a few missing files]
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
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OCC declarations are currently split between skiboot.h and occ-sensor.h.
Given the growing unwieldyness of skiboot.h it's probably time to move it
all into one header.
Rename occ-sensor.h to occ.h, move all OCC-related declarations out of
skiboot.h, and add #includes as necessary.
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Reviewed-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
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There are two sets of core temperature sensors today. One is DTS scom
based core temperature sensors and the second group is the sensors
provided by OCC. DTS is the highest temperature among the different
temperature zones in the core while OCC core temperature sensors are
the average temperature of the core. DTS sensors are read directly by
the host by SCOMing the DTS sensors while OCC sensors are read and
updated by OCC to main memory.
Reading DTS sensors by SCOMing is a heavy and slower operation as
compared to reading OCC sensors which is as good as reading memory.
So dont add DTS sensors when OCC sensors are available.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Acked-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
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This patch adds a new opal call to enable/disable a sensor group. This
call is used to select the sensor groups that needs to be copied to
main memory by OCC at runtime.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
[stewart: rebase and bump OPAL API number]
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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This patch adds support to read u64 sensor values. This also adds
changes to the core and the backend implementation code to make this
API as the base call. Host can use this new API to read sensors
upto 64bits.
This adds a list to store the pointer to the kernel u32 buffer, for
older kernels making async sensor u32 reads.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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dtc complains about missing reg property when a DT node is having a
unit name or address but no reg property.
Example warning for core dts sensor:
/ibm,opal/sensors/core-temp@5c has a unit name, but no reg property
/ibm,opal/sensors/core-temp@804 has a unit name, but no reg property
This patch fixes this by adding necessary properties.
Signed-off-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>
[stewart: use handle as register rather than chip id]
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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In P9, when a core enters a stop state, its clocks will be stopped
to save power and hence we will not be able to perform a scom
operation to read the DTS temperature sensor. Hence, assert
a special wakeup on cores that have entered a stop state in order to
successfully complete the scom operation.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
[rlippert@google.com: Clear special wakeup only when it succeeds]
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Adds a generic API to clear sensor groups. OCC inband sensor groups
such as CSM, Profiler and Job Scheduler can be cleared using this API.
It will clear the min/max of all sensors belonging to OCC sensor
groups.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Add support to parse and export OCC inband sensors which are copied
by OCC to main memory in P9. Each OCC writes three buffers which
includes one names buffer for sensor meta data and two buffers for
sensor readings. While OCC writes to one buffer the sensor values
can be read from the other buffer. The sensors are updated every
100ms.
This patch adds power, temperature, current and voltage sensors to
/ibm,opal/sensors device-tree node which can be exported by the
ibmpowernv-hwmon driver in Linux.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Currently, we are hijacking the last bit of the resource field of the
sensor handler to differentiate the sensor families and route the
opal_sensor_read() call to the appropriate component.
Let's reserve the last 3bits and provide an API to set the sensor
family for current use and future use. This gives us a maximum of 8
families and 32 resource classes. The FSP uses 15, so we should be
fine for a while.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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OPAL needs an extra compatible property "ibm,opal-sensor" to make
module autoload work smoothly in Linux for ibmpowernv driver.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Now that opal.h includes opal-api.h, there are a bunch of files that
include both but don't need to.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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The OPAL_SENSOR_READ call in Linux currently only tests for
OPAL_ASYNC_COMPLETION value. It is safe to change this return value to
give some extra information on the platform sensor support.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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This patch simply adds sensors nodes for the core temperatures. It
uses the core PIR as a resource identifier to fit in the sensor model.
The device tree nodes use the new layout.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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This patch adds a new sensor family for Digital Temperature Sensors
and a new resource class to capture the core temperatures.
Each core has four DTS located in different zones (LSU, ISU, FXU, L3).
The max of the four temperatures is computed and returned for the core
as well as a global trip point value. This is based on the meltbox tool.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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This patch introduces an initial framework to define a sensor_read
operation per platform. It also proposes a few helper routines to
work on the sensor 'handler' which identifies a sensor and attribute
in the OPAL_SENSOR_READ call.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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