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Date: Tue, 5 Oct 2010 12:54:04 +0200
From: Borislav Petkov <bp@...64.org>
To: <norsk5@...oo.com>
Cc: <linux-edac@...r.kernel.org>, <x86@...nel.org>,
<linux-kernel@...r.kernel.org>,
Borislav Petkov <borislav.petkov@....com>
Subject: [PATCH 4/8] EDAC, MCE: Adjust IC decoders to F14h
From: Borislav Petkov <borislav.petkov@....com>
Add support for IC MCEs for F14h CPUs. K8 and F10h are almost identical
so use one function for both.
Signed-off-by: Borislav Petkov <borislav.petkov@....com>
---
drivers/edac/mce_amd.c | 118 ++++++++++++++++++++++++++++-------------------
drivers/edac/mce_amd.h | 1 +
2 files changed, 71 insertions(+), 48 deletions(-)
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index 326db40..6e49f1e 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -223,61 +223,80 @@ wrong_dc_mce:
pr_emerg(HW_ERR "Corrupted DC MCE info?\n");
}
-static void amd_decode_ic_mce(struct mce *m)
+static bool k8_ic_mce(u16 ec)
{
- u32 ec = m->status & 0xffff;
- u32 xec = (m->status >> 16) & 0xf;
+ u8 ll = ec & 0x3;
+ u8 r4 = (ec >> 4) & 0xf;
+ bool ret = true;
- pr_emerg(HW_ERR "Instruction Cache Error");
+ if (!MEM_ERROR(ec))
+ return false;
- 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 &&
- (m->status & BIT(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 (r4) {
+ case R4_IRD:
+ pr_cont("Parity error during data load.\n");
+ break;
- 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;
+ case R4_EVICT:
+ pr_cont("Copyback Parity/Victim error.\n");
+ break;
+
+ case R4_SNOOP:
+ pr_cont("Tag Snoop error.\n");
+ break;
+
+ default:
+ ret = false;
+ break;
+ }
} else
- goto wrong_ic_mce;
+ ret = false;
- return;
+ return ret;
+}
+
+static bool f14h_ic_mce(u16 ec)
+{
+ u8 ll = ec & 0x3;
+ u8 tt = (ec >> 2) & 0x3;
+ u8 r4 = (ec >> 4) & 0xf;
+ bool ret = true;
-wrong_ic_mce:
- pr_emerg(HW_ERR "Corrupted IC MCE info?\n");
+ if (MEM_ERROR(ec)) {
+ if (tt != 0 || ll != 1)
+ ret = false;
+
+ if (r4 == R4_IRD)
+ pr_cont("Data/tag array parity error for a tag hit.\n");
+ else if (r4 == R4_SNOOP)
+ pr_cont("Tag error during snoop/victimization.\n");
+ else
+ ret = false;
+ }
+ return ret;
+}
+
+static void amd_decode_ic_mce(struct mce *m)
+{
+ u16 ec = m->status & 0xffff;
+ u8 xec = (m->status >> 16) & 0xf;
+
+ pr_emerg(HW_ERR "Instruction Cache Error: ");
+
+ if (TLB_ERROR(ec))
+ pr_cont("%s TLB %s.\n", LL_MSG(ec),
+ (xec ? "multimatch" : "parity error"));
+ else if (BUS_ERROR(ec)) {
+ bool k8 = (boot_cpu_data.x86 == 0xf && (m->status & BIT(58)));
+
+ pr_cont("during %s.\n", (k8 ? "system linefill" : "NB data read"));
+ } else if (fam_ops->ic_mce(ec))
+ ;
+ else
+ pr_emerg(HW_ERR "Corrupted IC MCE info?\n");
}
static void amd_decode_bu_mce(struct mce *m)
@@ -485,14 +504,17 @@ static int __init mce_amd_init(void)
switch (boot_cpu_data.x86) {
case 0xf:
fam_ops->dc_mce = k8_dc_mce;
+ fam_ops->ic_mce = k8_ic_mce;
break;
case 0x10:
fam_ops->dc_mce = f10h_dc_mce;
+ fam_ops->ic_mce = k8_ic_mce;
break;
case 0x14:
fam_ops->dc_mce = f14h_dc_mce;
+ fam_ops->ic_mce = f14h_ic_mce;
break;
default:
diff --git a/drivers/edac/mce_amd.h b/drivers/edac/mce_amd.h
index 85985c2..dc81dba 100644
--- a/drivers/edac/mce_amd.h
+++ b/drivers/edac/mce_amd.h
@@ -101,6 +101,7 @@ struct err_regs {
*/
struct amd_decoder_ops {
bool (*dc_mce)(u16);
+ bool (*ic_mce)(u16);
};
void amd_report_gart_errors(bool);
--
1.7.3.1.50.g1e633
--
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