Messages in this thread Patch in this message | | | From | niravkumar.l.rabara@intel ... | Subject | [PATCH v3 2/2] EDAC/altera: Check previous DDR DBE during driver probe | Date | Thu, 11 May 2023 12:12:21 +0800 |
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From: Niravkumar L Rabara <niravkumar.l.rabara@intel.com>
Add DDR DBE check during driver probe to notify user if previous reboot cause by DDR DBE and print DBE error related information.
Signed-off-by: Niravkumar L Rabara <niravkumar.l.rabara@intel.com> --- drivers/edac/altera_edac.c | 29 ++++++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-)
diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c index 8b31cd54bdb6..04c0675adc8c 100644 --- a/drivers/edac/altera_edac.c +++ b/drivers/edac/altera_edac.c @@ -2159,6 +2159,7 @@ static int altr_edac_a10_probe(struct platform_device *pdev) #ifdef CONFIG_64BIT { int dberror, err_addr; + struct arm_smccc_res result; edac->panic_notifier.notifier_call = s10_edac_dberr_handler; atomic_notifier_chain_register(&panic_notifier_list, @@ -2168,11 +2169,29 @@ static int altr_edac_a10_probe(struct platform_device *pdev) regmap_read(edac->ecc_mgr_map, S10_SYSMGR_UE_VAL_OFST, &dberror); if (dberror) { - regmap_read(edac->ecc_mgr_map, S10_SYSMGR_UE_ADDR_OFST, - &err_addr); - edac_printk(KERN_ERR, EDAC_DEVICE, - "Previous Boot UE detected[0x%X] @ 0x%X\n", - dberror, err_addr); + /* Bit-31 is set if previous DDR UE happened */ + if (dberror & (1 << 31)) { + /* Read previous DDR UE info */ + arm_smccc_smc(INTEL_SIP_SMC_READ_SEU_ERR, 0, + 0, 0, 0, 0, 0, 0, &result); + + if (!result.a0) { + edac_printk(KERN_ERR, EDAC_DEVICE, + "Previous DDR UE:Count=0x%X,Address=0x%X,ErrorData=0x%X\n" + , (unsigned int)result.a1 + , (unsigned int)result.a2 + , (unsigned int)result.a3); + } else { + edac_printk(KERN_ERR, EDAC_DEVICE, + "INTEL_SIP_SMC_SEU_ERR_STATUS failed\n"); + } + } else { + regmap_read(edac->ecc_mgr_map, S10_SYSMGR_UE_ADDR_OFST, + &err_addr); + edac_printk(KERN_ERR, EDAC_DEVICE, + "Previous Boot UE detected[0x%X] @ 0x%X\n", + dberror, err_addr); + } /* Reset the sticky registers */ regmap_write(edac->ecc_mgr_map, S10_SYSMGR_UE_VAL_OFST, 0); -- 2.25.1
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