diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/edac/edac_mce_amd.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c index b30a830..e1f32c3 100644 --- a/drivers/edac/edac_mce_amd.c +++ b/drivers/edac/edac_mce_amd.c @@ -228,6 +228,48 @@ wrong_ic_mce: pr_warning("Corrupted IC MCE info?\n"); } +static void amd_decode_bu_mce(u64 mc2_status) +{ + u32 ec = mc2_status & 0xffff; + u32 xec = (mc2_status >> 16) & 0xf; + + pr_emerg(" Bus Unit Error"); + + if (xec == 0x1) + pr_cont(" in the write data buffers.\n"); + else if (xec == 0x3) + pr_cont(" in the victim data buffers.\n"); + else if (xec == 0x2 && MEM_ERROR(ec)) + pr_cont(": %s error in the L2 cache tags.\n", RRRR_MSG(ec)); + else if (xec == 0x0) { + if (TLB_ERROR(ec)) + pr_cont(": %s error in a Page Descriptor Cache or " + "Guest TLB.\n", TT_MSG(ec)); + else if (BUS_ERROR(ec)) + pr_cont(": %s/ECC error in data read from NB: %s.\n", + RRRR_MSG(ec), PP_MSG(ec)); + else if (MEM_ERROR(ec)) { + u8 rrrr = (ec >> 4) & 0xf; + + if (rrrr >= 0x7) + pr_cont(": %s error during data copyback.\n", + RRRR_MSG(ec)); + else if (rrrr <= 0x1) + pr_cont(": %s parity/ECC error during data " + "access from L2.\n", RRRR_MSG(ec)); + else + goto wrong_bu_mce; + } else + goto wrong_bu_mce; + } else + goto wrong_bu_mce; + + return; + +wrong_bu_mce: + pr_warning("Corrupted BU MCE info?\n"); +} + void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors) { u32 ec = ERROR_CODE(regs->nbsl); @@ -320,6 +362,10 @@ void decode_mce(struct mce *m) amd_decode_ic_mce(m->status); break; + case 2: + amd_decode_bu_mce(m->status); + break; + case 4: regs.nbsl = (u32) m->status; regs.nbsh = (u32)(m->status >> 32); |