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authorYazen Ghannam <Yazen.Ghannam@amd.com>2016-09-12 09:59:34 +0200
committerThomas Gleixner <tglx@linutronix.de>2016-09-13 15:23:10 +0200
commit5896820e0aa32572ad03b30563c539655b6c6375 (patch)
tree5ba0adc4ecbf9cca585cb1eeb8c4c53a7b5bdc7a /drivers/edac
parent856095b1794be487527771dbd2fe28e34e94b266 (diff)
downloadlinux-5896820e0aa32572ad03b30563c539655b6c6375.tar.bz2
x86/mce/AMD, EDAC/mce_amd: Define and use tables for known SMCA IP types
Scalable MCA defines a number of IP types. An MCA bank on an SMCA system is defined as one of these IP types. A bank's type is uniquely identified by the combination of the HWID and MCATYPE values read from its MCA_IPID register. Add the required tables in order to be able to lookup error descriptions based on a bank's type and the error's extended error code. [ bp: Align comments, simplify a bit. ] Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1472741832-1690-1-git-send-email-Yazen.Ghannam@amd.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/edac')
-rw-r--r--drivers/edac/mce_amd.c194
1 files changed, 36 insertions, 158 deletions
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index ea549a94361b..99b3bf3f4182 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -283,6 +283,27 @@ static const char * const smca_smu_mce_desc[] = {
"SMU RAM ECC or parity error",
};
+struct smca_mce_desc {
+ const char * const *descs;
+ unsigned int num_descs;
+};
+
+static struct smca_mce_desc smca_mce_descs[] = {
+ [SMCA_LS] = { smca_ls_mce_desc, ARRAY_SIZE(smca_ls_mce_desc) },
+ [SMCA_IF] = { smca_if_mce_desc, ARRAY_SIZE(smca_if_mce_desc) },
+ [SMCA_L2_CACHE] = { smca_l2_mce_desc, ARRAY_SIZE(smca_l2_mce_desc) },
+ [SMCA_DE] = { smca_de_mce_desc, ARRAY_SIZE(smca_de_mce_desc) },
+ [SMCA_EX] = { smca_ex_mce_desc, ARRAY_SIZE(smca_ex_mce_desc) },
+ [SMCA_FP] = { smca_fp_mce_desc, ARRAY_SIZE(smca_fp_mce_desc) },
+ [SMCA_L3_CACHE] = { smca_l3_mce_desc, ARRAY_SIZE(smca_l3_mce_desc) },
+ [SMCA_CS] = { smca_cs_mce_desc, ARRAY_SIZE(smca_cs_mce_desc) },
+ [SMCA_PIE] = { smca_pie_mce_desc, ARRAY_SIZE(smca_pie_mce_desc) },
+ [SMCA_UMC] = { smca_umc_mce_desc, ARRAY_SIZE(smca_umc_mce_desc) },
+ [SMCA_PB] = { smca_pb_mce_desc, ARRAY_SIZE(smca_pb_mce_desc) },
+ [SMCA_PSP] = { smca_psp_mce_desc, ARRAY_SIZE(smca_psp_mce_desc) },
+ [SMCA_SMU] = { smca_smu_mce_desc, ARRAY_SIZE(smca_smu_mce_desc) },
+};
+
static bool f12h_mc0_mce(u16 ec, u8 xec)
{
bool ret = false;
@@ -827,175 +848,32 @@ static void decode_mc6_mce(struct mce *m)
pr_emerg(HW_ERR "Corrupted MC6 MCE info?\n");
}
-static void decode_f17h_core_errors(const char *ip_name, u8 xec,
- unsigned int mca_type)
-{
- const char * const *error_desc_array;
- size_t len;
-
- pr_emerg(HW_ERR "%s Error: ", ip_name);
-
- switch (mca_type) {
- case SMCA_LS:
- error_desc_array = smca_ls_mce_desc;
- len = ARRAY_SIZE(smca_ls_mce_desc) - 1;
-
- if (xec == 0x4) {
- pr_cont("Unrecognized LS MCA error code.\n");
- return;
- }
- break;
-
- case SMCA_IF:
- error_desc_array = smca_if_mce_desc;
- len = ARRAY_SIZE(smca_if_mce_desc) - 1;
- break;
-
- case SMCA_L2_CACHE:
- error_desc_array = smca_l2_mce_desc;
- len = ARRAY_SIZE(smca_l2_mce_desc) - 1;
- break;
-
- case SMCA_DE:
- error_desc_array = smca_de_mce_desc;
- len = ARRAY_SIZE(smca_de_mce_desc) - 1;
- break;
-
- case SMCA_EX:
- error_desc_array = smca_ex_mce_desc;
- len = ARRAY_SIZE(smca_ex_mce_desc) - 1;
- break;
-
- case SMCA_FP:
- error_desc_array = smca_fp_mce_desc;
- len = ARRAY_SIZE(smca_fp_mce_desc) - 1;
- break;
-
- case SMCA_L3_CACHE:
- error_desc_array = smca_l3_mce_desc;
- len = ARRAY_SIZE(smca_l3_mce_desc) - 1;
- break;
-
- default:
- pr_cont("Corrupted MCA core error info.\n");
- return;
- }
-
- if (xec > len) {
- pr_cont("Unrecognized %s MCA bank error code.\n",
- amd_core_mcablock_names[mca_type]);
- return;
- }
-
- pr_cont("%s.\n", error_desc_array[xec]);
-}
-
-static void decode_df_errors(u8 xec, unsigned int mca_type)
-{
- const char * const *error_desc_array;
- size_t len;
-
- pr_emerg(HW_ERR "Data Fabric Error: ");
-
- switch (mca_type) {
- case SMCA_CS:
- error_desc_array = smca_cs_mce_desc;
- len = ARRAY_SIZE(smca_cs_mce_desc) - 1;
- break;
-
- case SMCA_PIE:
- error_desc_array = smca_pie_mce_desc;
- len = ARRAY_SIZE(smca_pie_mce_desc) - 1;
- break;
-
- default:
- pr_cont("Corrupted MCA Data Fabric info.\n");
- return;
- }
-
- if (xec > len) {
- pr_cont("Unrecognized %s MCA bank error code.\n",
- amd_df_mcablock_names[mca_type]);
- return;
- }
-
- pr_cont("%s.\n", error_desc_array[xec]);
-}
-
/* Decode errors according to Scalable MCA specification */
static void decode_smca_errors(struct mce *m)
{
- u32 addr = MSR_AMD64_SMCA_MCx_IPID(m->bank);
- unsigned int hwid, mca_type, i;
- u8 xec = XEC(m->status, xec_mask);
- const char * const *error_desc_array;
+ struct smca_hwid_mcatype *type;
+ unsigned int bank_type;
const char *ip_name;
- u32 low, high;
- size_t len;
+ u8 xec = XEC(m->status, xec_mask);
- if (rdmsr_safe(addr, &low, &high)) {
- pr_emerg(HW_ERR "Invalid IP block specified.\n");
+ if (m->bank >= ARRAY_SIZE(smca_banks))
return;
- }
-
- hwid = high & MCI_IPID_HWID;
- mca_type = (high & MCI_IPID_MCATYPE) >> 16;
- pr_emerg(HW_ERR "MC%d IPID value: 0x%08x%08x\n", m->bank, high, low);
-
- /*
- * Based on hwid and mca_type values, decode errors from respective IPs.
- * Note: mca_type values make sense only in the context of an hwid.
- */
- for (i = 0; i < ARRAY_SIZE(amd_hwids); i++)
- if (amd_hwids[i].hwid == hwid)
- break;
-
- switch (i) {
- case SMCA_F17H_CORE:
- ip_name = (mca_type == SMCA_L3_CACHE) ?
- "L3 Cache" : "F17h Core";
- return decode_f17h_core_errors(ip_name, xec, mca_type);
- break;
-
- case SMCA_DF:
- return decode_df_errors(xec, mca_type);
- break;
-
- case SMCA_UMC:
- error_desc_array = smca_umc_mce_desc;
- len = ARRAY_SIZE(smca_umc_mce_desc) - 1;
- break;
-
- case SMCA_PB:
- error_desc_array = smca_pb_mce_desc;
- len = ARRAY_SIZE(smca_pb_mce_desc) - 1;
- break;
-
- case SMCA_PSP:
- error_desc_array = smca_psp_mce_desc;
- len = ARRAY_SIZE(smca_psp_mce_desc) - 1;
- break;
-
- case SMCA_SMU:
- error_desc_array = smca_smu_mce_desc;
- len = ARRAY_SIZE(smca_smu_mce_desc) - 1;
- break;
-
- default:
- pr_emerg(HW_ERR "HWID:%d does not match any existing IPs.\n", hwid);
+ type = smca_banks[m->bank].type;
+ if (!type)
return;
- }
- ip_name = amd_hwids[i].name;
- pr_emerg(HW_ERR "%s Error: ", ip_name);
+ bank_type = type->bank_type;
+ ip_name = smca_bank_names[bank_type].long_name;
- if (xec > len) {
- pr_cont("Unrecognized %s MCA bank error code.\n", ip_name);
- return;
- }
+ pr_emerg(HW_ERR "%s Extended Error Code: %d\n", ip_name, xec);
- pr_cont("%s.\n", error_desc_array[xec]);
+ /* Only print the decode of valid error codes */
+ if (xec < smca_mce_descs[bank_type].num_descs &&
+ (type->xec_bitmap & BIT_ULL(xec))) {
+ pr_emerg(HW_ERR "%s Error: ", ip_name);
+ pr_cont("%s.\n", smca_mce_descs[bank_type].descs[xec]);
+ }
}
static inline void amd_decode_err_code(u16 ec)