#include <linux/completion.h>
#include <linux/kobject.h>
#include <linux/platform_device.h>
+#include <linux/sysdev.h>
+#include <linux/workqueue.h>
+#include <linux/version.h>
#define EDAC_MC_LABEL_LEN 31
-#define MC_PROC_NAME_MAX_LEN 7
+#define EDAC_DEVICE_NAME_LEN 31
+#define EDAC_ATTRIB_VALUE_LEN 15
+#define MC_PROC_NAME_MAX_LEN 7
#if PAGE_SHIFT < 20
#define PAGES_TO_MiB( pages ) ( ( pages ) >> ( 20 - PAGE_SHIFT ) )
#define edac_mc_chipset_printk(mci, level, prefix, fmt, arg...) \
printk(level "EDAC " prefix " MC%d: " fmt, mci->mc_idx, ##arg)
+/* edac_device printk */
+#define edac_device_printk(ctl, level, fmt, arg...) \
+ printk(level "EDAC DEVICE%d: " fmt, ctl->dev_idx, ##arg)
+
/* prefixes for edac_printk() and edac_mc_printk() */
#define EDAC_MC "MC"
#define EDAC_PCI "PCI"
#define edac_debug_printk(level, fmt, arg...) \
do { \
if (level <= edac_debug_level) \
- edac_printk(KERN_DEBUG, EDAC_DEBUG, fmt, ##arg); \
+ edac_printk(KERN_EMERG, EDAC_DEBUG, fmt, ##arg); \
} while(0)
#define debugf0( ... ) edac_debug_printk(0, __VA_ARGS__ )
/* FIXME - should have notify capabilities: NMI, LOG, PROC, etc */
+extern char * edac_align_ptr(void *ptr, unsigned size);
+
/*
* There are several things to be aware of that aren't at all obvious:
*
struct completion kobj_complete;
};
+/*
+ * The following are the structures to provide for a generice
+ * or abstract 'edac_device'. This set of structures and the
+ * code that implements the APIs for the same, provide for
+ * registering EDAC type devices which are NOT standard memory.
+ *
+ * CPU caches (L1 and L2)
+ * DMA engines
+ * Core CPU swithces
+ * Fabric switch units
+ * PCIe interface controllers
+ * other EDAC/ECC type devices that can be monitored for
+ * errors, etc.
+ *
+ * It allows for a 2 level set of hiearchry. For example:
+ *
+ * cache could be composed of L1, L2 and L3 levels of cache.
+ * Each CPU core would have its own L1 cache, while sharing
+ * L2 and maybe L3 caches.
+ *
+ * View them arranged, via the sysfs presentation:
+ * /sys/devices/system/edac/..
+ *
+ * mc/ <existing memory device directory>
+ * cpu/cpu0/.. <L1 and L2 block directory>
+ * /L1-cache/ce_count
+ * /ue_count
+ * /L2-cache/ce_count
+ * /ue_count
+ * cpu/cpu1/.. <L1 and L2 block directory>
+ * /L1-cache/ce_count
+ * /ue_count
+ * /L2-cache/ce_count
+ * /ue_count
+ * ...
+ *
+ * the L1 and L2 directories would be "edac_device_block's"
+ */
+
+struct edac_device_counter {
+ u32 ue_count;
+ u32 ce_count;
+};
+
+#define INC_COUNTER(cnt) (cnt++)
+
+/*
+ * An array of these is passed to the alloc() function
+ * to specify attributes of the edac_block
+ */
+struct edac_attrib_spec {
+ char name[EDAC_DEVICE_NAME_LEN + 1];
+
+ int type;
+#define EDAC_ATTR_INT 0x01
+#define EDAC_ATTR_CHAR 0x02
+};
+
+
+/* Attribute control structure
+ * In this structure is a pointer to the driver's edac_attrib_spec
+ * The life of this pointer is inclusive in the life of the driver's
+ * life cycle.
+ */
+struct edac_attrib {
+ struct edac_device_block *block; /* Up Pointer */
+
+ struct edac_attrib_spec *spec; /* ptr to module spec entry */
+
+ union { /* actual value */
+ int edac_attrib_int_value;
+ char edac_attrib_char_value[EDAC_ATTRIB_VALUE_LEN + 1];
+ } edac_attrib_value;
+};
+
+/* device block control structure */
+struct edac_device_block {
+ struct edac_device_instance *instance; /* Up Pointer */
+ char name[EDAC_DEVICE_NAME_LEN + 1];
+
+ struct edac_device_counter counters; /* basic UE and CE counters */
+
+ int nr_attribs; /* how many attributes */
+ struct edac_attrib *attribs; /* this block's attributes */
+
+ /* edac sysfs device control */
+ struct kobject kobj;
+ struct completion kobj_complete;
+};
+
+/* device instance control structure */
+struct edac_device_instance {
+ struct edac_device_ctl_info *ctl; /* Up pointer */
+ char name[EDAC_DEVICE_NAME_LEN + 4];
+
+ struct edac_device_counter counters; /* instance counters */
+
+ u32 nr_blocks; /* how many blocks */
+ struct edac_device_block *blocks; /* block array */
+
+ /* edac sysfs device control */
+ struct kobject kobj;
+ struct completion kobj_complete;
+};
+
+
+/*
+ * Abstract edac_device control info structure
+ *
+ */
+struct edac_device_ctl_info {
+ /* for global list of edac_device_ctl_info structs */
+ struct list_head link;
+
+ int dev_idx;
+
+ /* Per instance controls for this edac_device */
+ int log_ue; /* boolean for logging UEs */
+ int log_ce; /* boolean for logging CEs */
+ int panic_on_ue; /* boolean for panic'ing on an UE */
+ unsigned poll_msec; /* number of milliseconds to poll interval */
+ unsigned long delay; /* number of jiffies for poll_msec */
+
+ struct sysdev_class *edac_class; /* pointer to class */
+
+ /* the internal state of this controller instance */
+ int op_state;
+#define OP_ALLOC 0x100
+#define OP_RUNNING_POLL 0x201
+#define OP_RUNNING_INTERRUPT 0x202
+#define OP_RUNNING_POLL_INTR 0x203
+#define OP_OFFLINE 0x300
+
+ /* work struct for this instance */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
+ struct delayed_work work;
+#else
+ struct work_struct work;
+#endif
+
+ /* pointer to edac polling checking routine:
+ * If NOT NULL: points to polling check routine
+ * If NULL: Then assumes INTERRUPT operation, where
+ * MC driver will receive events
+ */
+ void (*edac_check) (struct edac_device_ctl_info * edac_dev);
+
+ struct device *dev; /* pointer to device structure */
+
+ const char *mod_name; /* module name */
+ const char *ctl_name; /* edac controller name */
+
+ void *pvt_info; /* pointer to 'private driver' info */
+
+ unsigned long start_time;/* edac_device load start time (jiffies)*/
+
+ /* these are for safe removal of mc devices from global list while
+ * NMI handlers may be traversing list
+ */
+ struct rcu_head rcu;
+ struct completion complete;
+
+ /* sysfs top name under 'edac' directory
+ * and instance name:
+ * cpu/cpu0/...
+ * cpu/cpu1/...
+ * cpu/cpu2/...
+ * ...
+ */
+ char name[EDAC_DEVICE_NAME_LEN + 1];
+
+ /* Number of instances supported on this control structure
+ * and the array of those instances
+ */
+ u32 nr_instances;
+ struct edac_device_instance *instances;
+
+ /* Event counters for the this whole EDAC Device */
+ struct edac_device_counter counters;
+
+ /* edac sysfs device control for the 'name'
+ * device this structure controls
+ */
+ struct kobject kobj;
+ struct completion kobj_complete;
+};
+
+/* To get from the instance's wq to the beginning of the ctl structure */
+#define to_edac_device_ctl_work(w) \
+ container_of(w,struct edac_device_ctl_info,work)
+
+/* Function to calc the number of delay jiffies from poll_msec */
+static inline void edac_device_calc_delay(
+ struct edac_device_ctl_info *edac_dev)
+{
+ /* convert from msec to jiffies */
+ edac_dev->delay = edac_dev->poll_msec * HZ / 1000;
+}
+
+/*
+ * The alloc() and free() functions for the 'edac_device' control info
+ * structure. A MC driver will allocate one of these for each edac_device
+ * it is going to control/register with the EDAC CORE.
+ */
+extern struct edac_device_ctl_info *edac_device_alloc_ctl_info(
+ unsigned sizeof_private,
+ char *edac_device_name,
+ unsigned nr_instances,
+ char *edac_block_name,
+ unsigned nr_blocks,
+ unsigned offset_value,
+ struct edac_attrib_spec *attrib_spec,
+ unsigned nr_attribs
+);
+
+/* The offset value can be:
+ * -1 indicating no offset value
+ * 0 for zero-based block numbers
+ * 1 for 1-based block number
+ * other for other-based block number
+ */
+#define BLOCK_OFFSET_VALUE_OFF ((unsigned) -1)
+
+extern void edac_device_free_ctl_info( struct edac_device_ctl_info *ctl_info);
+
#ifdef CONFIG_PCI
/* write all or some bits in a byte-register*/
char *msg);
/*
- * This kmalloc's and initializes all the structures.
- * Can't be used if all structures don't have the same lifetime.
+ * edac_device APIs
*/
extern struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
unsigned nr_chans);
-
-/* Free an mc previously allocated by edac_mc_alloc() */
extern void edac_mc_free(struct mem_ctl_info *mci);
+extern int edac_device_add_device(struct edac_device_ctl_info *edac_dev, int edac_idx);
+extern struct edac_device_ctl_info * edac_device_del_device(struct device *dev);
+extern void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
+ int inst_nr, int block_nr, const char *msg);
+extern void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
+ int inst_nr, int block_nr, const char *msg);
+
#endif /* _EDAC_CORE_H_ */
git.openpandora.org / pandora-kernel.git / blobdiff