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Signed-off-by: Quan Nguyen --- .../sysfs-bus-platform-devices-ampere-smpro | 10 +++ drivers/misc/smpro-errmon.c | 77 +++++++++++++++++++ 2 files changed, 87 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro index d4e3f308c451..c35f1d45e656 100644 --- a/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro +++ b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro @@ -265,6 +265,16 @@ Description: 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-errmon.*/event_dimm[0-15]_syndrome +KernelVersion: 6.1 +Contact: Quan Nguyen +Description: + (RO) The sysfs returns the 2-byte DIMM failure syndrome data for slot + 0-15 if it failed to initialized. + + For more details, see section `5.11 Boot Stage Register Definitions, + Altra Family Soc BMC Interface Specification`. + What: /sys/bus/platform/devices/smpro-misc.*/boot_progress KernelVersion: 6.1 Contact: Quan Nguyen diff --git a/drivers/misc/smpro-errmon.c b/drivers/misc/smpro-errmon.c index 1635e881aefb..3e8570cbb740 100644 --- a/drivers/misc/smpro-errmon.c +++ b/drivers/misc/smpro-errmon.c @@ -47,6 +47,12 @@ #define WARN_PMPRO_INFO_LO 0xAC #define WARN_PMPRO_INFO_HI 0xAD +/* Boot Stage Register */ +#define BOOTSTAGE 0xB0 +#define DIMM_SYNDROME_SEL 0xB4 +#define DIMM_SYNDROME_ERR 0xB5 +#define DIMM_SYNDROME_STAGE 4 + /* PCIE Error Registers */ #define PCIE_CE_ERR_CNT 0xC0 #define PCIE_CE_ERR_LEN 0xC1 @@ -468,6 +474,61 @@ EVENT_RO(vrd_hot, VRD_HOT_EVENT); EVENT_RO(dimm_hot, DIMM_HOT_EVENT); EVENT_RO(dimm_2x_refresh, DIMM_2X_REFRESH_EVENT); +static ssize_t smpro_dimm_syndrome_read(struct device *dev, struct device_attribute *da, + char *buf, int slot) +{ + struct smpro_errmon *errmon = dev_get_drvdata(dev); + s32 data; + int ret; + + ret = regmap_read(errmon->regmap, BOOTSTAGE, &data); + if (ret) + return ret; + + /* check for valid stage */ + data = (data >> 8) & 0xff; + if (data != DIMM_SYNDROME_STAGE) + return ret; + + /* Write the slot ID to retrieve Error Syndrome */ + ret = regmap_write(errmon->regmap, DIMM_SYNDROME_SEL, slot); + if (ret) + return ret; + + /* Read the Syndrome error */ + ret = regmap_read(errmon->regmap, DIMM_SYNDROME_ERR, &data); + if (ret || !data) + return ret; + + return sysfs_emit(buf, "%04x\n", data); +} + +#define EVENT_DIMM_SYNDROME(_slot) \ + static ssize_t event_dimm##_slot##_syndrome_show(struct device *dev, \ + struct device_attribute *da, \ + char *buf) \ + { \ + return smpro_dimm_syndrome_read(dev, da, buf, _slot); \ + } \ + static DEVICE_ATTR_RO(event_dimm##_slot##_syndrome) + +EVENT_DIMM_SYNDROME(0); +EVENT_DIMM_SYNDROME(1); +EVENT_DIMM_SYNDROME(2); +EVENT_DIMM_SYNDROME(3); +EVENT_DIMM_SYNDROME(4); +EVENT_DIMM_SYNDROME(5); +EVENT_DIMM_SYNDROME(6); +EVENT_DIMM_SYNDROME(7); +EVENT_DIMM_SYNDROME(8); +EVENT_DIMM_SYNDROME(9); +EVENT_DIMM_SYNDROME(10); +EVENT_DIMM_SYNDROME(11); +EVENT_DIMM_SYNDROME(12); +EVENT_DIMM_SYNDROME(13); +EVENT_DIMM_SYNDROME(14); +EVENT_DIMM_SYNDROME(15); + static struct attribute *smpro_errmon_attrs[] = { &dev_attr_overflow_core_ce.attr, &dev_attr_overflow_core_ue.attr, @@ -493,6 +554,22 @@ static struct attribute *smpro_errmon_attrs[] = { &dev_attr_event_vrd_hot.attr, &dev_attr_event_dimm_hot.attr, &dev_attr_event_dimm_2x_refresh.attr, + &dev_attr_event_dimm0_syndrome.attr, + &dev_attr_event_dimm1_syndrome.attr, + &dev_attr_event_dimm2_syndrome.attr, + &dev_attr_event_dimm3_syndrome.attr, + &dev_attr_event_dimm4_syndrome.attr, + &dev_attr_event_dimm5_syndrome.attr, + &dev_attr_event_dimm6_syndrome.attr, + &dev_attr_event_dimm7_syndrome.attr, + &dev_attr_event_dimm8_syndrome.attr, + &dev_attr_event_dimm9_syndrome.attr, + &dev_attr_event_dimm10_syndrome.attr, + &dev_attr_event_dimm11_syndrome.attr, + &dev_attr_event_dimm12_syndrome.attr, + &dev_attr_event_dimm13_syndrome.attr, + &dev_attr_event_dimm14_syndrome.attr, + &dev_attr_event_dimm15_syndrome.attr, NULL };