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EDAC, AMD: decode data cache MCEs 

Those get reported in MC0_STATUS, see Table 92, F10h BKDG (31116, rev.
3.28) for more details.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
This commit is contained in:
Borislav Petkov 2009-07-28 13:50:43 +02:00
parent d93cc222ad
commit 5196624136
1 changed files with 54 additions and 2 deletions
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56
drivers/edac/edac_mce_amd.c
View File

@ -128,6 +128,49 @@ const char *ext_msgs[] = {
};
EXPORT_SYMBOL_GPL(ext_msgs);
static void amd_decode_dc_mce(u64 mc0_status)
{
u32 ec = mc0_status & 0xffff;
u32 xec = (mc0_status >> 16) & 0xf;
pr_emerg(" Data Cache Error");
if (xec == 1 && TLB_ERROR(ec))
pr_cont(": %s TLB multimatch.\n", LL_MSG(ec));
else if (xec == 0) {
if (mc0_status & (1ULL << 40))
pr_cont(" during Data Scrub.\n");
else if (TLB_ERROR(ec))
pr_cont(": %s TLB parity error.\n", LL_MSG(ec));
else if (MEM_ERROR(ec)) {
u8 ll = ec & 0x3;
u8 tt = (ec >> 2) & 0x3;
u8 rrrr = (ec >> 4) & 0xf;
/* see F10h BKDG (31116), Table 92. */
if (ll == 0x1) {
if (tt != 0x1)
goto wrong_dc_mce;
pr_cont(": Data/Tag %s error.\n", RRRR_MSG(ec));
} else if (ll == 0x2 && rrrr == 0x3)
pr_cont(" during L1 linefill from L2.\n");
else
goto wrong_dc_mce;
} else if (BUS_ERROR(ec) && boot_cpu_data.x86 == 0xf)
pr_cont(" during system linefill.\n");
else
goto wrong_dc_mce;
} else
goto wrong_dc_mce;
return;
wrong_dc_mce:
pr_warning("Corrupted DC MCE info?\n");
}
void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors)
{
u32 ec = ERROR_CODE(regs->nbsl);
@ -211,9 +254,12 @@ void decode_mce(struct mce *m)
pr_cont("\n");
amd_decode_err_code(m->status & 0xffff);
switch (m->bank) {
case 0:
amd_decode_dc_mce(m->status);
break;
if (m->bank == 4) {
case 4:
regs.nbsl = (u32) m->status;
regs.nbsh = (u32)(m->status >> 32);
regs.nbeal = (u32) m->addr;
@ -221,5 +267,11 @@ void decode_mce(struct mce *m)
node = per_cpu(cpu_llc_id, m->extcpu);
amd_decode_nb_mce(node, &regs, 1);
break;
default:
break;
}
amd_decode_err_code(m->status & 0xffff);
}