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| author | Quan Nguyen <quan@os.amperecomputing.com> | 2023-03-10 15:34:16 +0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-10 09:47:16 +0100 |
| commit | c2c99326cc0176cbc3e7c11e97db11ca56077d10 (patch) | |
| tree | 9b7065f7b24c295cacae62bf9726590958508dff /drivers/misc/smpro-errmon.c | |
| parent | b0f64c80cb8c1adcdae59fa09bbc9d34adc29911 (diff) | |
| download | linux-c2c99326cc0176cbc3e7c11e97db11ca56077d10.tar.gz | |
misc: smpro-errmon: Add dimm training failure syndrome
Adds event_dimm[0-15]_syndrome sysfs to report the failure syndrome
to BMC when DIMM training failed.
Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
Link: https://lore.kernel.org/r/20230310083416.3670980-3-quan@os.amperecomputing.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/smpro-errmon.c')
| -rw-r--r-- | drivers/misc/smpro-errmon.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/misc/smpro-errmon.c b/drivers/misc/smpro-errmon.c index 1635e881aefb8c..a1f0b2c77fac34 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, unsigned int slot) +{ + struct smpro_errmon *errmon = dev_get_drvdata(dev); + unsigned int 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 }; |