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-rw-r--r--include/linux/edac.h82
1 files changed, 79 insertions, 3 deletions
diff --git a/include/linux/edac.h b/include/linux/edac.h
index bab9f8473dc1..4fd4999ccb5b 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -14,7 +14,6 @@
#include <linux/atomic.h>
#include <linux/device.h>
-#include <linux/kobject.h>
#include <linux/completion.h>
#include <linux/workqueue.h>
#include <linux/debugfs.h>
@@ -48,8 +47,17 @@ static inline void opstate_init(void)
return;
}
+/* Max length of a DIMM label*/
#define EDAC_MC_LABEL_LEN 31
-#define MC_PROC_NAME_MAX_LEN 7
+
+/* Maximum size of the location string */
+#define LOCATION_SIZE 80
+
+/* Defines the maximum number of labels that can be reported */
+#define EDAC_MAX_LABELS 8
+
+/* String used to join two or more labels */
+#define OTHER_LABEL " or "
/**
* enum dev_type - describe the type of memory DRAM chips used at the stick
@@ -101,8 +109,24 @@ enum hw_event_mc_err_type {
HW_EVENT_ERR_CORRECTED,
HW_EVENT_ERR_UNCORRECTED,
HW_EVENT_ERR_FATAL,
+ HW_EVENT_ERR_INFO,
};
+static inline char *mc_event_error_type(const unsigned int err_type)
+{
+ switch (err_type) {
+ case HW_EVENT_ERR_CORRECTED:
+ return "Corrected";
+ case HW_EVENT_ERR_UNCORRECTED:
+ return "Uncorrected";
+ case HW_EVENT_ERR_FATAL:
+ return "Fatal";
+ default:
+ case HW_EVENT_ERR_INFO:
+ return "Info";
+ }
+}
+
/**
* enum mem_type - memory types. For a more detailed reference, please see
* http://en.wikipedia.org/wiki/DRAM
@@ -376,6 +400,9 @@ enum scrub_type {
* @EDAC_MC_LAYER_CHANNEL: memory layer is named "channel"
* @EDAC_MC_LAYER_SLOT: memory layer is named "slot"
* @EDAC_MC_LAYER_CHIP_SELECT: memory layer is named "chip select"
+ * @EDAC_MC_LAYER_ALL_MEM: memory layout is unknown. All memory is mapped
+ * as a single memory area. This is used when
+ * retrieving errors from a firmware driven driver.
*
* This enum is used by the drivers to tell edac_mc_sysfs what name should
* be used when describing a memory stick location.
@@ -385,6 +412,7 @@ enum edac_mc_layer_type {
EDAC_MC_LAYER_CHANNEL,
EDAC_MC_LAYER_SLOT,
EDAC_MC_LAYER_CHIP_SELECT,
+ EDAC_MC_LAYER_ALL_MEM,
};
/**
@@ -533,6 +561,7 @@ struct csrow_info {
u32 ue_count; /* Uncorrectable Errors for this csrow */
u32 ce_count; /* Correctable Errors for this csrow */
+ u32 nr_pages; /* combined pages count of all channels */
struct mem_ctl_info *mci; /* the parent */
@@ -550,6 +579,46 @@ struct errcount_attribute_data {
int layer0, layer1, layer2;
};
+/**
+ * edac_raw_error_desc - Raw error report structure
+ * @grain: minimum granularity for an error report, in bytes
+ * @error_count: number of errors of the same type
+ * @top_layer: top layer of the error (layer[0])
+ * @mid_layer: middle layer of the error (layer[1])
+ * @low_layer: low layer of the error (layer[2])
+ * @page_frame_number: page where the error happened
+ * @offset_in_page: page offset
+ * @syndrome: syndrome of the error (or 0 if unknown or if
+ * the syndrome is not applicable)
+ * @msg: error message
+ * @location: location of the error
+ * @label: label of the affected DIMM(s)
+ * @other_detail: other driver-specific detail about the error
+ * @enable_per_layer_report: if false, the error affects all layers
+ * (typically, a memory controller error)
+ */
+struct edac_raw_error_desc {
+ /*
+ * NOTE: everything before grain won't be cleaned by
+ * edac_raw_error_desc_clean()
+ */
+ char location[LOCATION_SIZE];
+ char label[(EDAC_MC_LABEL_LEN + 1 + sizeof(OTHER_LABEL)) * EDAC_MAX_LABELS];
+ long grain;
+
+ /* the vars below and grain will be cleaned on every new error report */
+ u16 error_count;
+ int top_layer;
+ int mid_layer;
+ int low_layer;
+ unsigned long page_frame_number;
+ unsigned long offset_in_page;
+ unsigned long syndrome;
+ const char *msg;
+ const char *other_detail;
+ bool enable_per_layer_report;
+};
+
/* MEMORY controller information structure
*/
struct mem_ctl_info {
@@ -629,7 +698,6 @@ struct mem_ctl_info {
const char *mod_ver;
const char *ctl_name;
const char *dev_name;
- char proc_name[MC_PROC_NAME_MAX_LEN + 1];
void *pvt_info;
unsigned long start_time; /* mci load start time (in jiffies) */
@@ -658,6 +726,12 @@ struct mem_ctl_info {
/* work struct for this MC */
struct delayed_work work;
+ /*
+ * Used to report an error - by being at the global struct
+ * makes the memory allocated by the EDAC core
+ */
+ struct edac_raw_error_desc error_desc;
+
/* the internal state of this controller instance */
int op_state;
@@ -667,6 +741,8 @@ struct mem_ctl_info {
u32 fake_inject_ue;
u16 fake_inject_count;
#endif
+ __u8 csbased : 1, /* csrow-based memory controller */
+ __resv : 7;
};
#endif