vesnin: Add temperature sensor support for CPU cores

IPMI protocol imposes limits on numbers of sensors identifiers (1 byte).
This limitation doesn't allow us to use unique temperature sensor ID for
each CPU core (4 CPU * 12 cores = 48 sensors).
Added patch makes OCC use own ID as channel label instead of using IPMI
temperature sensor ID.

Signed-off-by: Artem Senichev <a.senichev@yadro.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/openpower/patches/vesnin-patches/occ-p8/occ-0002-Add-temperature-sensor-support-for-CPU-cores.patch b/openpower/patches/vesnin-patches/occ-p8/occ-0002-Add-temperature-sensor-support-for-CPU-cores.patch
new file mode 100644
index 00000000..7556b973
--- /dev/null
+++ b/openpower/patches/vesnin-patches/occ-p8/occ-0002-Add-temperature-sensor-support-for-CPU-cores.patch
@@ -0,0 +1,43 @@
+From 0ec6ab11dcec304876802d1ed7bb01bd059ae311 Mon Sep 17 00:00:00 2001
+From: Artem Senichev <a.senichev@yadro.com>
+Date: Tue, 18 Dec 2018 14:16:56 +0300
+Subject: [PATCH] Add temperature sensor support for CPU cores
+
+IPMI protocol imposes limits on numbers of sensors identifiers (1 byte).
+This limitation doesn't allow us to use unique temperature sensor ID for
+each CPU core (4 CPU * 12 cores = 48 sensors).
+
+OCC uses temperature sensor ID as channel label, these labels are handled
+by phosphor-hwmon service to identify the core:
+
+     I2C               sysfs                   config.yaml
+OCC -----> BMC Kernel -------> Phosphor-hwmon -------------> DBus
+     ID                label                   label->core
+
+This patch makes OCC use own ID as channel label instead of using IPMI
+temperature sensor ID. The new identifier consists of constant prefix
+(0x0f) and core index:
+ID = 0x0f00 + INDEX(core)
+
+Signed-off-by: Artem Senichev <a.senichev@yadro.com>
+---
+ src/occ/cmdh/cmdh_fsp_cmds.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/occ/cmdh/cmdh_fsp_cmds.c b/src/occ/cmdh/cmdh_fsp_cmds.c
+index 6276992..69c646e 100755
+--- a/src/occ/cmdh/cmdh_fsp_cmds.c
++++ b/src/occ/cmdh/cmdh_fsp_cmds.c
+@@ -393,7 +393,8 @@ ERRL_RC cmdh_poll_v10(cmdh_fsp_rsp_t * o_rsp_ptr)
+     {
+         if(CORE_PRESENT(k))
+         {
+-            l_tempSensorList[l_sensorHeader.count].id = G_amec_sensor_list[TEMP2MSP0C0 + k]->ipmi_sid;
++            // Set the core label as a constant prefix with index
++            l_tempSensorList[l_sensorHeader.count].id = 0x0f00 + k;
+             l_tempSensorList[l_sensorHeader.count].value = G_amec_sensor_list[TEMP2MSP0C0 + k]->sample;
+             l_sensorHeader.count++;
+         }
+-- 
+2.19.2
+