lkml.org 
[lkml]   [2010]   [Nov]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 04/12] EDAC, MCE: Add F15h CU MCE decoder
Date
From: Borislav Petkov <borislav.petkov@amd.com>

MCE bank 2 is redefined from a BU to a CU (Combined Unit) bank on F15h.
Add a decoder function for CU MCEs.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
---
drivers/edac/mce_amd.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 61 insertions(+), 1 deletions(-)
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index 158cd5f..7eb2706 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -95,6 +95,23 @@ static const char * const f15h_ic_mce_desc[] = {
"fetch address FIFO"
};

+static const char * const f15h_cu_mce_desc[] = {
+ "Fill ECC error on data fills", /* xec = 0x4 */
+ "Fill parity error on insn fills",
+ "Prefetcher request FIFO parity error",
+ "PRQ address parity error",
+ "PRQ data parity error",
+ "WCC Tag ECC error",
+ "WCC Data ECC error",
+ "WCB Data parity error",
+ "VB Data/ECC error",
+ "L2 Tag ECC error", /* xec = 0x10 */
+ "Hard L2 Tag ECC error",
+ "Multiple hits on L2 tag",
+ "XAB parity error",
+ "PRB address parity error"
+};
+
static bool f12h_dc_mce(u16 ec, u8 xec)
{
bool ret = false;
@@ -405,6 +422,46 @@ wrong_bu_mce:
pr_emerg(HW_ERR "Corrupted BU MCE info?\n");
}

+static void amd_decode_cu_mce(struct mce *m)
+{
+ u16 ec = m->status & 0xffff;
+ u8 xec = (m->status >> 16) & xec_mask;
+
+ pr_emerg(HW_ERR "Combined Unit Error: ");
+
+ if (TLB_ERROR(ec)) {
+ if (xec == 0x0)
+ pr_cont("Data parity TLB read error.\n");
+ else if (xec == 0x1)
+ pr_cont("Poison data provided for TLB fill.\n");
+ else
+ goto wrong_cu_mce;
+ } else if (BUS_ERROR(ec)) {
+ if (xec > 2)
+ goto wrong_cu_mce;
+
+ pr_cont("Error during attempted NB data read.\n");
+ } else if (MEM_ERROR(ec)) {
+ switch (xec) {
+ case 0x4 ... 0xc:
+ pr_cont("%s.\n", f15h_cu_mce_desc[xec - 0x4]);
+ break;
+
+ case 0x10 ... 0x14:
+ pr_cont("%s.\n", f15h_cu_mce_desc[xec - 0x7]);
+ break;
+
+ default:
+ goto wrong_cu_mce;
+ }
+ }
+
+ return;
+
+wrong_cu_mce:
+ pr_emerg(HW_ERR "Corrupted CU MCE info?\n");
+}
+
static void amd_decode_ls_mce(struct mce *m)
{
u16 ec = m->status & 0xffff;
@@ -665,7 +722,10 @@ int amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data)
break;

case 2:
- amd_decode_bu_mce(m);
+ if (boot_cpu_data.x86 == 0x15)
+ amd_decode_cu_mce(m);
+ else
+ amd_decode_bu_mce(m);
break;

case 3:
--
1.7.3.1.50.g1e633


\
 
 \ /
  Last update: 2010-11-10 20:07    [from the cache]
©2003-2011 Jasper Spaans