From: Borislav Petkov Date: Thu, 25 Jun 2009 17:51:04 +0000 (+0200) Subject: amd64_edac: cleanup/complete NB MCE decoding X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5110dbdeab546268dda2e4c6a83448639b2fc5ae;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git amd64_edac: cleanup/complete NB MCE decoding * don't dump info which mcheck already does * update to newest BKDG * mv amd64_process_error_info -> amd64_decode_nb_mce * shorten error struct names * remove redundant info ptr in amd64_process_error_info * remove unused ErrorCodeExt[19:16] (MCx_STATUS) defines Signed-off-by: Borislav Petkov --- diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index c9b88d829701..5af87d44c80c 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -2355,62 +2355,47 @@ static void amd64_decode_bus_error(struct mem_ctl_info *mci, "Error Overflow set"); } -int amd64_process_error_info(struct mem_ctl_info *mci, - struct err_regs *regs, - int handle_errors) +void amd64_decode_nb_mce(struct mem_ctl_info *mci, struct err_regs *regs, + int handle_errors) { - struct amd64_pvt *pvt; - u32 err_code, ext_ec; - int gart_tlb_error = 0; - - pvt = mci->pvt_info; + struct amd64_pvt *pvt = mci->pvt_info; + int ecc; + u32 ec = ERROR_CODE(regs->nbsl); + u32 xec = EXT_ERROR_CODE(regs->nbsl); if (!handle_errors) - return 1; + return; - debugf1("NorthBridge ERROR: mci(0x%p)\n", mci); - debugf1(" MC node(%d) Error-Address(0x%.8x-%.8x)\n", - pvt->mc_node_id, regs->nbeah, regs->nbeal); - debugf1(" nbsh(0x%.8x) nbsl(0x%.8x)\n", - regs->nbsh, regs->nbsl); - debugf1(" Valid Error=%s Overflow=%s\n", - (regs->nbsh & K8_NBSH_VALID_BIT) ? "True" : "False", - (regs->nbsh & K8_NBSH_OVERFLOW) ? "True" : "False"); - debugf1(" Err Uncorrected=%s MCA Error Reporting=%s\n", - (regs->nbsh & K8_NBSH_UNCORRECTED_ERR) ? - "True" : "False", - (regs->nbsh & K8_NBSH_ERR_ENABLE) ? - "True" : "False"); - debugf1(" MiscErr Valid=%s ErrAddr Valid=%s PCC=%s\n", - (regs->nbsh & K8_NBSH_MISC_ERR_VALID) ? - "True" : "False", - (regs->nbsh & K8_NBSH_VALID_ERROR_ADDR) ? - "True" : "False", - (regs->nbsh & K8_NBSH_PCC) ? - "True" : "False"); - debugf1(" CECC=%s UECC=%s Found by Scruber=%s\n", - (regs->nbsh & K8_NBSH_CECC) ? - "True" : "False", - (regs->nbsh & K8_NBSH_UECC) ? - "True" : "False", - (regs->nbsh & K8_NBSH_ERR_SCRUBER) ? - "True" : "False"); - debugf1(" CORE0=%s CORE1=%s CORE2=%s CORE3=%s\n", - (regs->nbsh & K8_NBSH_CORE0) ? "True" : "False", - (regs->nbsh & K8_NBSH_CORE1) ? "True" : "False", - (regs->nbsh & K8_NBSH_CORE2) ? "True" : "False", - (regs->nbsh & K8_NBSH_CORE3) ? "True" : "False"); + pr_emerg(" Northbridge ERROR, mc node %d", pvt->mc_node_id); + /* + * F10h, revD can disable ErrCpu[3:0] so check that first and also the + * value encoding has changed so interpret those differently + */ + if ((boot_cpu_data.x86 == 0x10) && + (boot_cpu_data.x86_model > 8)) { + if (regs->nbsh & K8_NBSH_ERR_CPU_VAL) + pr_cont(", core: %u\n", (u8)(regs->nbsh & 0xf)); + } else { + pr_cont(", core: %d\n", ilog2((regs->nbsh & 0xf))); + } - err_code = ERROR_CODE(regs->nbsl); + pr_emerg(" Error: %sorrected", + ((regs->nbsh & K8_NBSH_UC_ERR) ? "Unc" : "C")); + pr_cont(", Report Error: %s", + ((regs->nbsh & K8_NBSH_ERR_EN) ? "yes" : "no")); + pr_cont(", MiscV: %svalid, CPU context corrupt: %s", + ((regs->nbsh & K8_NBSH_MISCV) ? "" : "In"), + ((regs->nbsh & K8_NBSH_PCC) ? "yes" : "no")); - /* Determine which error type: - * 1) GART errors - non-fatal, developmental events - * 2) MEMORY errors - * 3) BUS errors - * 4) Unknown error - */ - if (TLB_ERROR(err_code)) { + /* do the two bits[14:13] together */ + ecc = regs->nbsh & (0x3 << 13); + if (ecc) + pr_cont(", %sECC Error", ((ecc == 2) ? "C" : "U")); + + pr_cont("\n"); + + if (TLB_ERROR(ec)) { /* * GART errors are intended to help graphics driver developers * to detect bad GART PTEs. It is recommended by AMD to disable @@ -2423,52 +2408,34 @@ int amd64_process_error_info(struct mem_ctl_info *mci, * [1] section 13.10.1 on BIOS and Kernel Developers Guide for * AMD NPT family 0Fh processors */ - if (report_gart_errors == 0) - return 1; - - /* - * Only if GART error reporting is requested should we generate - * any logs. - */ - gart_tlb_error = 1; + if (!report_gart_errors) + return; - debugf1("GART TLB error\n"); + pr_emerg("GART TLB error\n"); amd64_decode_gart_tlb_error(mci, regs); - } else if (MEM_ERROR(err_code)) { - debugf1("Memory/Cache error\n"); + } else if (MEM_ERROR(ec)) { + pr_emerg("Memory/Cache error\n"); amd64_decode_mem_cache_error(mci, regs); - } else if (BUS_ERROR(err_code)) { - debugf1("Bus (Link/DRAM) error\n"); + } else if (BUS_ERROR(ec)) { + pr_emerg("Bus (Link/DRAM) error\n"); amd64_decode_bus_error(mci, regs); } else { /* shouldn't reach here! */ amd64_mc_printk(mci, KERN_WARNING, "%s(): unknown MCE error 0x%x\n", __func__, - err_code); + ec); } - ext_ec = EXT_ERROR_CODE(regs->nbsl); - amd64_mc_printk(mci, KERN_ERR, - "ExtErr=(0x%x) %s\n", ext_ec, ext_msgs[ext_ec]); + pr_emerg("%s.\n", EXT_ERR_MSG(xec)); /* * Check the UE bit of the NB status high register, if set generate some * logs. If NOT a GART error, then process the event as a NO-INFO event. * If it was a GART error, skip that process. */ - if (regs->nbsh & K8_NBSH_UNCORRECTED_ERR) { - amd64_mc_printk(mci, KERN_CRIT, "uncorrected error\n"); - if (!gart_tlb_error) - edac_mc_handle_ue_no_info(mci, "UE bit is set\n"); - } - - if (regs->nbsh & K8_NBSH_PCC) - amd64_mc_printk(mci, KERN_CRIT, - "PCC (processor context corrupt) set\n"); - - return 1; + if (regs->nbsh & K8_NBSH_UC_ERR && !report_gart_errors) + edac_mc_handle_ue_no_info(mci, "UE bit is set"); } -EXPORT_SYMBOL_GPL(amd64_process_error_info); /* * The main polling 'check' function, called FROM the edac core to perform the @@ -2479,7 +2446,7 @@ static void amd64_check(struct mem_ctl_info *mci) struct err_regs regs; if (amd64_get_error_info(mci, ®s)) - amd64_process_error_info(mci, ®s, 1); + amd64_decode_nb_mce(mci, ®s, 1); } /* diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h index bde8f78551f9..ecab0c9fd14e 100644 --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -306,16 +306,7 @@ enum { /* Family F10h: Normalized Extended Error Codes */ #define F10_NBSL_EXT_ERR_RES 0x0 -#define F10_NBSL_EXT_ERR_CRC 0x1 -#define F10_NBSL_EXT_ERR_SYNC 0x2 -#define F10_NBSL_EXT_ERR_MST 0x3 -#define F10_NBSL_EXT_ERR_TGT 0x4 -#define F10_NBSL_EXT_ERR_GART 0x5 -#define F10_NBSL_EXT_ERR_RMW 0x6 -#define F10_NBSL_EXT_ERR_WDT 0x7 #define F10_NBSL_EXT_ERR_ECC 0x8 -#define F10_NBSL_EXT_ERR_DEV 0x9 -#define F10_NBSL_EXT_ERR_LINK_DATA 0xA /* Next two are overloaded values */ #define F10_NBSL_EXT_ERR_LINK_PROTO 0xB @@ -360,18 +351,15 @@ enum { #define K8_NBSH_VALID_BIT BIT(31) #define K8_NBSH_OVERFLOW BIT(30) -#define K8_NBSH_UNCORRECTED_ERR BIT(29) -#define K8_NBSH_ERR_ENABLE BIT(28) -#define K8_NBSH_MISC_ERR_VALID BIT(27) +#define K8_NBSH_UC_ERR BIT(29) +#define K8_NBSH_ERR_EN BIT(28) +#define K8_NBSH_MISCV BIT(27) #define K8_NBSH_VALID_ERROR_ADDR BIT(26) #define K8_NBSH_PCC BIT(25) +#define K8_NBSH_ERR_CPU_VAL BIT(24) #define K8_NBSH_CECC BIT(14) #define K8_NBSH_UECC BIT(13) #define K8_NBSH_ERR_SCRUBER BIT(8) -#define K8_NBSH_CORE3 BIT(3) -#define K8_NBSH_CORE2 BIT(2) -#define K8_NBSH_CORE1 BIT(1) -#define K8_NBSH_CORE0 BIT(0) #define EXTRACT_ERR_CPU_MAP(x) ((x) & 0xF) @@ -622,8 +610,8 @@ static inline struct low_ops *family_ops(int index) #define F10_MIN_SCRUB_RATE_BITS 0x5 #define F11_MIN_SCRUB_RATE_BITS 0x6 -int amd64_process_error_info(struct mem_ctl_info *mci, - struct err_regs *info, - int handle_errors); +void amd64_decode_nb_mce(struct mem_ctl_info *mci, struct err_regs *info, + int handle_errors); + int amd64_get_dram_hole_info(struct mem_ctl_info *mci, u64 *hole_base, u64 *hole_offset, u64 *hole_size); diff --git a/drivers/edac/amd64_edac_dbg.c b/drivers/edac/amd64_edac_dbg.c index 0a41b248a4ad..bcb4e2eba3dc 100644 --- a/drivers/edac/amd64_edac_dbg.c +++ b/drivers/edac/amd64_edac_dbg.c @@ -24,7 +24,7 @@ static ssize_t amd64_nbea_store(struct mem_ctl_info *mci, const char *data, /* Process the Mapping request */ /* TODO: Add race prevention */ - amd64_process_error_info(mci, &pvt->ctl_error_info, 1); + amd64_decode_nb_mce(mci, &pvt->ctl_error_info, 1); return count; } diff --git a/drivers/edac/edac_mce_amd.h b/drivers/edac/edac_mce_amd.h index 81f9dcf9990a..39971cdabb51 100644 --- a/drivers/edac/edac_mce_amd.h +++ b/drivers/edac/edac_mce_amd.h @@ -1,5 +1,7 @@ #define ERROR_CODE(x) ((x) & 0xffff) #define EXT_ERROR_CODE(x) (((x) >> 16) & 0x1f) +#define EXT_ERR_MSG(x) ext_msgs[EXT_ERROR_CODE(x)] + #define LOW_SYNDROME(x) (((x) >> 15) & 0xff) #define HIGH_SYNDROME(x) (((x) >> 24) & 0xff)