From b0f64c80cb8c1adcdae59fa09bbc9d34adc29911 Mon Sep 17 00:00:00 2001 From: Quan Nguyen Date: Fri, 10 Mar 2023 15:34:15 +0700 Subject: [PATCH] misc: smpro-errmon: Add DIMM 2x Refresh rate event In high temperature condition, JEDEC spec requires memory controller to double the refresh rate. This commit adds event_dimm_2x_refresh sysfs to report that events for all memory channels. Signed-off-by: Quan Nguyen Link: https://lore.kernel.org/r/20230310083416.3670980-2-quan@os.amperecomputing.com Signed-off-by: Greg Kroah-Hartman --- .../ABI/testing/sysfs-bus-platform-devices-ampere-smpro | 9 ++++++--- drivers/misc/smpro-errmon.c | 5 +++++ 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro index ca93c215ef995..14b58c893df5e 100644 --- a/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro +++ b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro @@ -234,8 +234,8 @@ Description: For details, see section `5.10 RAS Internal Error Register Definitions, Altra Family Soc BMC Interface Specification`. -What: /sys/bus/platform/devices/smpro-errmon.*/event_[vrd_warn_fault|vrd_hot|dimm_hot] -KernelVersion: 6.1 +What: /sys/bus/platform/devices/smpro-errmon.*/event_[vrd_warn_fault|vrd_hot|dimm_hot|dimm_2x_refresh] +KernelVersion: 6.1 (event_[vrd_warn_fault|vrd_hot|dimm_hot]), 6.4 (event_dimm_2x_refresh) Contact: Quan Nguyen Description: (RO) Contains the detail information in case of VRD/DIMM warning/hot events @@ -258,8 +258,11 @@ Description: +---------------+---------------------------------------------------------------+---------------------+ | DIMM HOT | /sys/bus/platform/devices/smpro-errmon.*/event_dimm_hot | DIMM Hot | +---------------+---------------------------------------------------------------+---------------------+ + | DIMM 2X | /sys/bus/platform/devices/smpro-errmon.*/event_dimm_2x_refresh| DIMM 2x refresh rate| + | REFRESH RATE | | event in high temp | + +---------------+---------------------------------------------------------------+---------------------+ - For more details, see section `5.7 GPI Status Registers, + For more details, see section `5.7 GPI Status Registers and 5.9 Memory Error Register Definitions, Altra Family Soc BMC Interface Specification`. What: /sys/bus/platform/devices/smpro-misc.*/boot_progress diff --git a/drivers/misc/smpro-errmon.c b/drivers/misc/smpro-errmon.c index d1431d419aa42..1635e881aefb8 100644 --- a/drivers/misc/smpro-errmon.c +++ b/drivers/misc/smpro-errmon.c @@ -67,6 +67,7 @@ #define VRD_WARN_FAULT_EVENT_DATA 0x78 #define VRD_HOT_EVENT_DATA 0x79 #define DIMM_HOT_EVENT_DATA 0x7A +#define DIMM_2X_REFRESH_EVENT_DATA 0x96 #define MAX_READ_BLOCK_LENGTH 48 @@ -190,6 +191,7 @@ enum EVENT_TYPES { VRD_WARN_FAULT_EVENT, VRD_HOT_EVENT, DIMM_HOT_EVENT, + DIMM_2X_REFRESH_EVENT, NUM_EVENTS_TYPE, }; @@ -198,6 +200,7 @@ static u8 smpro_event_table[NUM_EVENTS_TYPE] = { VRD_WARN_FAULT_EVENT_DATA, VRD_HOT_EVENT_DATA, DIMM_HOT_EVENT_DATA, + DIMM_2X_REFRESH_EVENT_DATA, }; static ssize_t smpro_event_data_read(struct device *dev, @@ -463,6 +466,7 @@ static DEVICE_ATTR_RO(warn_pmpro); EVENT_RO(vrd_warn_fault, VRD_WARN_FAULT_EVENT); EVENT_RO(vrd_hot, VRD_HOT_EVENT); EVENT_RO(dimm_hot, DIMM_HOT_EVENT); +EVENT_RO(dimm_2x_refresh, DIMM_2X_REFRESH_EVENT); static struct attribute *smpro_errmon_attrs[] = { &dev_attr_overflow_core_ce.attr, @@ -488,6 +492,7 @@ static struct attribute *smpro_errmon_attrs[] = { &dev_attr_event_vrd_warn_fault.attr, &dev_attr_event_vrd_hot.attr, &dev_attr_event_dimm_hot.attr, + &dev_attr_event_dimm_2x_refresh.attr, NULL }; -- 2.30.2