EDAC, AMD: decode instruction cache MCEs

See Fam10h BKDG (31116, rev. 3.28), Table 95

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c
index fe8ccebd9672..b30a8306b143 100644
--- a/drivers/edac/edac_mce_amd.c
+++ b/drivers/edac/edac_mce_amd.c
@@ -171,6 +171,63 @@ wrong_dc_mce:
         pr_warning("Corrupted DC MCE info?\n");
 }
 
+static void amd_decode_ic_mce(u64 mc1_status)
+{
+        u32 ec  = mc1_status & 0xffff;
+        u32 xec = (mc1_status >> 16) & 0xf;
+
+        pr_emerg(" Instruction Cache Error");
+
+        if (xec == 1 && TLB_ERROR(ec))
+                pr_cont(": %s TLB multimatch.\n", LL_MSG(ec));
+        else if (xec == 0) {
+                if (TLB_ERROR(ec))
+                        pr_cont(": %s TLB Parity error.\n", LL_MSG(ec));
+                else if (BUS_ERROR(ec)) {
+                        if (boot_cpu_data.x86 == 0xf &&
+                            (mc1_status & (1ULL << 58)))
+                                pr_cont(" during system linefill.\n");
+                        else
+                                pr_cont(" during attempted NB data read.\n");
+                } else if (MEM_ERROR(ec)) {
+                        u8 ll   = ec & 0x3;
+                        u8 rrrr = (ec >> 4) & 0xf;
+
+                        if (ll == 0x2)
+                                pr_cont(" during a linefill from L2.\n");
+                        else if (ll == 0x1) {
+
+                                switch (rrrr) {
+                                case 0x5:
+                                        pr_cont(": Parity error during "
+                                               "data load.\n");
+                                        break;
+
+                                case 0x7:
+                                        pr_cont(": Copyback Parity/Victim"
+                                                " error.\n");
+                                        break;
+
+                                case 0x8:
+                                        pr_cont(": Tag Snoop error.\n");
+                                        break;
+
+                                default:
+                                        goto wrong_ic_mce;
+                                        break;
+                                }
+                        }
+                } else
+                        goto wrong_ic_mce;
+        } else
+                goto wrong_ic_mce;
+
+        return;
+
+wrong_ic_mce:
+        pr_warning("Corrupted IC MCE info?\n");
+}
+
 void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors)
 {
         u32 ec  = ERROR_CODE(regs->nbsl);
@@ -259,6 +316,10 @@ void decode_mce(struct mce *m)
                 amd_decode_dc_mce(m->status);
                 break;
 
+        case 1:
+                amd_decode_ic_mce(m->status);
+                break;
+
         case 4:
                 regs.nbsl  = (u32) m->status;
                 regs.nbsh  = (u32)(m->status >> 32);