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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] x86 mce: move mce quirks into separate files
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1250266179 -3600
# Node ID d2ec750f9b415f5e4f265218a2aba399aaf03141
# Parent 01546e6749b3816cd2cd5408e01f8f18a4fd9354
x86 mce: move mce quirks into separate files
Quirk handling is designed to easily add more quirks when needed
w/o messing around in the normal mce code.
Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>
---
xen/arch/x86/cpu/mcheck/Makefile | 1
xen/arch/x86/cpu/mcheck/amd_k8.c | 24 ++--------
xen/arch/x86/cpu/mcheck/mce_amd_quirks.c | 73 +++++++++++++++++++++++++++++++
xen/arch/x86/cpu/mcheck/mce_quirks.h | 54 ++++++++++++++++++++++
4 files changed, 135 insertions(+), 17 deletions(-)
diff -r 01546e6749b3 -r d2ec750f9b41 xen/arch/x86/cpu/mcheck/Makefile
--- a/xen/arch/x86/cpu/mcheck/Makefile Fri Aug 14 17:08:38 2009 +0100
+++ b/xen/arch/x86/cpu/mcheck/Makefile Fri Aug 14 17:09:39 2009 +0100
@@ -5,4 +5,5 @@ obj-y += mctelem.o
obj-y += mctelem.o
obj-y += mce.o
obj-y += mce_intel.o
+obj-y += mce_amd_quirks.o
obj-y += non-fatal.o
diff -r 01546e6749b3 -r d2ec750f9b41 xen/arch/x86/cpu/mcheck/amd_k8.c
--- a/xen/arch/x86/cpu/mcheck/amd_k8.c Fri Aug 14 17:08:38 2009 +0100
+++ b/xen/arch/x86/cpu/mcheck/amd_k8.c Fri Aug 14 17:09:39 2009 +0100
@@ -67,7 +67,7 @@
#include <asm/msr.h>
#include "mce.h"
-
+#include "mce_quirks.h"
/* Machine Check Handler for AMD K8 family series */
static void k8_machine_check(struct cpu_user_regs *regs, long error_code)
@@ -79,31 +79,21 @@ int amd_k8_mcheck_init(struct cpuinfo_x8
int amd_k8_mcheck_init(struct cpuinfo_x86 *c)
{
uint32_t i;
+ enum mcequirk_amd_flags quirkflag;
/* Check for PPro style MCA; our caller has confirmed MCE support. */
if (!cpu_has(c, X86_FEATURE_MCA))
return 0;
+ quirkflag = mcequirk_lookup_amd_quirkdata(c);
+
mce_cap_init();
x86_mce_vector_register(k8_machine_check);
for (i = 0; i < nr_mce_banks; i++) {
- switch (i) {
- case 4: /* Northbridge */
- if (c->x86 == 0xf) {
- /*
- * Enable error reporting of all errors except
- * for GART TBL walk error reporting, which
- * trips off incorrectly with IOMMU & 3ware &
- * Cerberus.
- */
- wrmsrl(MSR_IA32_MC4_CTL, ~(1ULL << 10));
- wrmsrl(MSR_IA32_MC4_STATUS, 0x0ULL);
- break;
- }
- /* fall through */
-
- default:
+ if (quirkflag == MCEQUIRK_K8_GART && i == 4) {
+ mcequirk_amd_apply(quirkflag);
+ } else {
/* Enable error reporting of all errors */
wrmsrl(MSR_IA32_MC0_CTL + 4 * i, 0xffffffffffffffffULL);
wrmsrl(MSR_IA32_MC0_STATUS + 4 * i, 0x0ULL);
diff -r 01546e6749b3 -r d2ec750f9b41 xen/arch/x86/cpu/mcheck/mce_amd_quirks.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/x86/cpu/mcheck/mce_amd_quirks.c Fri Aug 14 17:09:39 2009 +0100
@@ -0,0 +1,73 @@
+/*
+ * MCA quirks for AMD CPUs
+ * Copyright (c) 2009 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <asm-x86/msr.h>
+#include <asm-x86/processor.h>
+
+#include "mce_quirks.h"
+
+#define ANY -1
+
+static const struct mce_quirkdata mce_amd_quirks[] = {
+ { 0x6 /* cpu family */, ANY /* all models */, ANY /* all steppings */,
+ MCEQUIRK_K7_BANK0 },
+ { 0xf /* cpu family */, ANY /* all models */, ANY /* all steppings */,
+ MCEQUIRK_K8_GART },
+};
+
+enum mcequirk_amd_flags
+mcequirk_lookup_amd_quirkdata(struct cpuinfo_x86 *c)
+{
+ int i;
+
+ BUG_ON(c->x86_vendor != X86_VENDOR_AMD);
+
+ for (i = 0; i < ARRAY_SIZE(mce_amd_quirks); i++) {
+ if (c->x86 != mce_amd_quirks[i].cpu_family)
+ continue;
+ if ( (mce_amd_quirks[i].cpu_model != ANY) &&
+ (mce_amd_quirks[i].cpu_model != c->x86_model) )
+ continue;
+ if ( (mce_amd_quirks[i].cpu_stepping != ANY) &&
+ (mce_amd_quirks[i].cpu_stepping != c->x86_mask) )
+ continue;
+ return mce_amd_quirks[i].quirk;
+ }
+ return 0;
+}
+
+int mcequirk_amd_apply(enum mcequirk_amd_flags flags)
+{
+ switch (flags) {
+ case MCEQUIRK_K7_BANK0:
+ return 1; /* first bank */
+
+ case MCEQUIRK_K8_GART:
+ /*
+ * Enable error reporting for all errors except for GART
+ * TBL walk error reporting, which trips off incorrectly
+ * with AGP GART & 3ware & Cerberus.
+ */
+ wrmsrl(MSR_IA32_MC4_CTL, ~(1ULL << 10));
+ wrmsrl(MSR_IA32_MC4_STATUS, 0ULL);
+ break;
+ }
+
+ return 0;
+}
diff -r 01546e6749b3 -r d2ec750f9b41 xen/arch/x86/cpu/mcheck/mce_quirks.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/x86/cpu/mcheck/mce_quirks.h Fri Aug 14 17:09:39 2009 +0100
@@ -0,0 +1,54 @@
+/* * MCA quirks
+ * Copyright (c) 2009 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _MCE_QUIRK_H
+#define _MCE_QUIRK_H
+
+#include <xen/types.h>
+
+struct mce_quirkdata {
+ int32_t cpu_family;
+ int16_t cpu_model;
+ int16_t cpu_stepping;
+ uint32_t quirk;
+};
+
+/* use a binary flag if multiple quirks apply
+ * to one CPU family/model
+ */
+
+enum mcequirk_amd_flags {
+ MCEQUIRK_K7_BANK0 = 0x1,
+ MCEQUIRK_K8_GART = 0x2,
+};
+
+enum mcequirk_intel_flags {
+ MCEQUIRK_DUMMY = 0x1, /* nothing known yet */
+};
+
+enum mcequirk_amd_flags
+mcequirk_lookup_amd_quirkdata(struct cpuinfo_x86 *c);
+
+int mcequirk_amd_apply(enum mcequirk_amd_flags flags);
+
+enum mcequirk_intel_flags
+mcequirk_lookup_intel_quirkdata(struct cpuinfo_x86 *c);
+
+int mcequirk_intel_apply(enum mcequirk_intel_flags flags);
+
+#endif /* _MCE_QUIRK_H */
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