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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-28 20:42:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-28 20:42:33 -0800
commitad6c2c2eb34f234d6253292b9b3c047614fbfe7e (patch)
tree8ceb00db9874c09f3002b5ca579f1f9146b30a28 /include/acpi
parent19cc90f58d4f2538b4cf5371681a057d2e5209f2 (diff)
parentb0769891ba7baa53f270dc70d71934748beb4c5b (diff)
Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull EDAC fixes and ghes-edac from Mauro Carvalho Chehab: "For: - Some fixes at edac drivers (i7core_edac, sb_edac, i3200_edac); - error injection support for i5100, when EDAC debug is enabled; - fix edac when it is loaded builtin (early init for the subsystem); - a "Firmware First" EDAC driver, allowing ghes to report errors via EDAC (ghes-edac). With regards to ghes-edac, this fixes a longstanding BZ at Red Hat that happens with Nehalem and Sandy Bridge CPUs: when both GHES and i7core_edac or sb_edac are running, the error reports are unpredictable, as both BIOS and OS race to access the registers. With ghes-edac, the EDAC core will refuse to register any other concurrent memory error driver. This patchset moves the ghes struct definitions to a separate header file (include/acpi/ghes.h) and adds 3 hooks at apei/ghes.c to register/unregister and to report errors via ghes-edac. Those changes were acked by ghes driver maintainer (Huang)." * 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (30 commits) i5100_edac: convert to use simple_open() ghes_edac: fix to use list_for_each_entry_safe() when delete list items ghes_edac: Fix RAS tracing ghes_edac: Make it compliant with UEFI spec 2.3.1 ghes_edac: Improve driver's printk messages ghes_edac: Don't credit the same memory dimm twice ghes_edac: do a better job of filling EDAC DIMM info ghes_edac: add support for reporting errors via EDAC ghes_edac: Register at EDAC core the BIOS report ghes: add the needed hooks for EDAC error report ghes: move structures/enum to a header file edac: add support for error type "Info" edac: add support for raw error reports edac: reduce stack pressure by using a pre-allocated buffer edac: lock module owner to avoid error report conflicts edac: remove proc_name from mci structure edac: add a new memory layer type edac: initialize the core earlier edac: better report error conditions in debug mode i5100_edac: Remove two checkpatch warnings ...
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/ghes.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h
new file mode 100644
index 000000000000..720446cb243e
--- /dev/null
+++ b/include/acpi/ghes.h
@@ -0,0 +1,72 @@
+#include <acpi/apei.h>
+#include <acpi/hed.h>
+
+/*
+ * One struct ghes is created for each generic hardware error source.
+ * It provides the context for APEI hardware error timer/IRQ/SCI/NMI
+ * handler.
+ *
+ * estatus: memory buffer for error status block, allocated during
+ * HEST parsing.
+ */
+#define GHES_TO_CLEAR 0x0001
+#define GHES_EXITING 0x0002
+
+struct ghes {
+ struct acpi_hest_generic *generic;
+ struct acpi_hest_generic_status *estatus;
+ u64 buffer_paddr;
+ unsigned long flags;
+ union {
+ struct list_head list;
+ struct timer_list timer;
+ unsigned int irq;
+ };
+};
+
+struct ghes_estatus_node {
+ struct llist_node llnode;
+ struct acpi_hest_generic *generic;
+ struct ghes *ghes;
+};
+
+struct ghes_estatus_cache {
+ u32 estatus_len;
+ atomic_t count;
+ struct acpi_hest_generic *generic;
+ unsigned long long time_in;
+ struct rcu_head rcu;
+};
+
+enum {
+ GHES_SEV_NO = 0x0,
+ GHES_SEV_CORRECTED = 0x1,
+ GHES_SEV_RECOVERABLE = 0x2,
+ GHES_SEV_PANIC = 0x3,
+};
+
+/* From drivers/edac/ghes_edac.c */
+
+#ifdef CONFIG_EDAC_GHES
+void ghes_edac_report_mem_error(struct ghes *ghes, int sev,
+ struct cper_sec_mem_err *mem_err);
+
+int ghes_edac_register(struct ghes *ghes, struct device *dev);
+
+void ghes_edac_unregister(struct ghes *ghes);
+
+#else
+static inline void ghes_edac_report_mem_error(struct ghes *ghes, int sev,
+ struct cper_sec_mem_err *mem_err)
+{
+}
+
+static inline int ghes_edac_register(struct ghes *ghes, struct device *dev)
+{
+ return 0;
+}
+
+static inline void ghes_edac_unregister(struct ghes *ghes)
+{
+}
+#endif