7c9281d76c
This is a large patch to refactor the original EDAC module in the kernel and to break it up into better file granularity, such that each source file contains a given subsystem of the EDAC CORE. Originally, the EDAC 'core' was contained in one source file: edac_mc.c with it corresponding edac_mc.h file. Now, there are the following files: edac_module.c The main module init/exit function and other overhead edac_mc.c Code handling the edac_mc class of object edac_mc_sysfs.c Code handling for sysfs presentation edac_pci_sysfs.c Code handling for PCI sysfs presentation edac_core.h CORE .h include file for 'edac_mc' and 'edac_device' drivers edac_module.h Internal CORE .h include file This forms a foundation upon which a later patch can create the 'edac_device' class of object code in a new file 'edac_device.c'. Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
890 lines
22 KiB
C
890 lines
22 KiB
C
/*
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* edac_mc kernel module
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* (C) 2005, 2006 Linux Networx (http://lnxi.com)
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* This file may be distributed under the terms of the
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* GNU General Public License.
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*
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* Written Doug Thompson <norsk5@xmission.com>
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*
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*/
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#include <linux/module.h>
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#include <linux/sysdev.h>
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#include <linux/ctype.h>
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#include "edac_mc.h"
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#include "edac_module.h"
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/* MC EDAC Controls, setable by module parameter, and sysfs */
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static int log_ue = 1;
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static int log_ce = 1;
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static int panic_on_ue;
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static int poll_msec = 1000;
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/* Getter functions for above */
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int edac_get_log_ue()
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{
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return log_ue;
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}
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int edac_get_log_ce()
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{
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return log_ce;
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}
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int edac_get_panic_on_ue()
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{
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return panic_on_ue;
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}
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int edac_get_poll_msec()
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{
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return poll_msec;
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}
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/* Parameter declarations for above */
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module_param(panic_on_ue, int, 0644);
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MODULE_PARM_DESC(panic_on_ue, "Panic on uncorrected error: 0=off 1=on");
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module_param(log_ue, int, 0644);
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MODULE_PARM_DESC(log_ue, "Log uncorrectable error to console: 0=off 1=on");
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module_param(log_ce, int, 0644);
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MODULE_PARM_DESC(log_ce, "Log correctable error to console: 0=off 1=on");
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module_param(poll_msec, int, 0644);
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MODULE_PARM_DESC(poll_msec, "Polling period in milliseconds");
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/*
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* various constants for Memory Controllers
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*/
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static const char *mem_types[] = {
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[MEM_EMPTY] = "Empty",
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[MEM_RESERVED] = "Reserved",
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[MEM_UNKNOWN] = "Unknown",
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[MEM_FPM] = "FPM",
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[MEM_EDO] = "EDO",
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[MEM_BEDO] = "BEDO",
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[MEM_SDR] = "Unbuffered-SDR",
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[MEM_RDR] = "Registered-SDR",
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[MEM_DDR] = "Unbuffered-DDR",
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[MEM_RDDR] = "Registered-DDR",
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[MEM_RMBS] = "RMBS"
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};
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static const char *dev_types[] = {
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[DEV_UNKNOWN] = "Unknown",
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[DEV_X1] = "x1",
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[DEV_X2] = "x2",
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[DEV_X4] = "x4",
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[DEV_X8] = "x8",
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[DEV_X16] = "x16",
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[DEV_X32] = "x32",
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[DEV_X64] = "x64"
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};
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static const char *edac_caps[] = {
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[EDAC_UNKNOWN] = "Unknown",
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[EDAC_NONE] = "None",
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[EDAC_RESERVED] = "Reserved",
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[EDAC_PARITY] = "PARITY",
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[EDAC_EC] = "EC",
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[EDAC_SECDED] = "SECDED",
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[EDAC_S2ECD2ED] = "S2ECD2ED",
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[EDAC_S4ECD4ED] = "S4ECD4ED",
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[EDAC_S8ECD8ED] = "S8ECD8ED",
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[EDAC_S16ECD16ED] = "S16ECD16ED"
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};
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/*
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* sysfs object: /sys/devices/system/edac
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* need to export to other files in this modules
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*/
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struct sysdev_class edac_class = {
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set_kset_name("edac"),
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};
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/* sysfs object:
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* /sys/devices/system/edac/mc
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*/
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static struct kobject edac_memctrl_kobj;
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/* We use these to wait for the reference counts on edac_memctrl_kobj and
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* edac_pci_kobj to reach 0.
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*/
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static struct completion edac_memctrl_kobj_complete;
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/*
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* /sys/devices/system/edac/mc;
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* data structures and methods
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*/
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static ssize_t memctrl_int_show(void *ptr, char *buffer)
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{
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int *value = (int*) ptr;
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return sprintf(buffer, "%u\n", *value);
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}
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static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count)
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{
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int *value = (int*) ptr;
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if (isdigit(*buffer))
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*value = simple_strtoul(buffer, NULL, 0);
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return count;
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}
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struct memctrl_dev_attribute {
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struct attribute attr;
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void *value;
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ssize_t (*show)(void *,char *);
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ssize_t (*store)(void *, const char *, size_t);
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};
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/* Set of show/store abstract level functions for memory control object */
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static ssize_t memctrl_dev_show(struct kobject *kobj,
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struct attribute *attr, char *buffer)
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{
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struct memctrl_dev_attribute *memctrl_dev;
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memctrl_dev = (struct memctrl_dev_attribute*)attr;
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if (memctrl_dev->show)
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return memctrl_dev->show(memctrl_dev->value, buffer);
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return -EIO;
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}
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static ssize_t memctrl_dev_store(struct kobject *kobj, struct attribute *attr,
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const char *buffer, size_t count)
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{
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struct memctrl_dev_attribute *memctrl_dev;
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memctrl_dev = (struct memctrl_dev_attribute*)attr;
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if (memctrl_dev->store)
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return memctrl_dev->store(memctrl_dev->value, buffer, count);
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return -EIO;
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}
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static struct sysfs_ops memctrlfs_ops = {
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.show = memctrl_dev_show,
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.store = memctrl_dev_store
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};
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#define MEMCTRL_ATTR(_name,_mode,_show,_store) \
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static struct memctrl_dev_attribute attr_##_name = { \
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.attr = {.name = __stringify(_name), .mode = _mode }, \
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.value = &_name, \
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.show = _show, \
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.store = _store, \
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};
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#define MEMCTRL_STRING_ATTR(_name,_data,_mode,_show,_store) \
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static struct memctrl_dev_attribute attr_##_name = { \
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.attr = {.name = __stringify(_name), .mode = _mode }, \
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.value = _data, \
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.show = _show, \
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.store = _store, \
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};
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/* csrow<id> control files */
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MEMCTRL_ATTR(panic_on_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store);
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MEMCTRL_ATTR(log_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store);
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MEMCTRL_ATTR(log_ce,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store);
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MEMCTRL_ATTR(poll_msec,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store);
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/* Base Attributes of the memory ECC object */
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static struct memctrl_dev_attribute *memctrl_attr[] = {
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&attr_panic_on_ue,
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&attr_log_ue,
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&attr_log_ce,
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&attr_poll_msec,
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NULL,
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};
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/* Main MC kobject release() function */
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static void edac_memctrl_master_release(struct kobject *kobj)
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{
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debugf1("%s()\n", __func__);
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complete(&edac_memctrl_kobj_complete);
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}
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static struct kobj_type ktype_memctrl = {
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.release = edac_memctrl_master_release,
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.sysfs_ops = &memctrlfs_ops,
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.default_attrs = (struct attribute **) memctrl_attr,
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};
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/* Initialize the main sysfs entries for edac:
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* /sys/devices/system/edac
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*
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* and children
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*
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* Return: 0 SUCCESS
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* !0 FAILURE
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*/
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int edac_sysfs_memctrl_setup(void)
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{
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int err = 0;
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debugf1("%s()\n", __func__);
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/* create the /sys/devices/system/edac directory */
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err = sysdev_class_register(&edac_class);
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if (err) {
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debugf1("%s() error=%d\n", __func__, err);
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return err;
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}
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/* Init the MC's kobject */
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memset(&edac_memctrl_kobj, 0, sizeof (edac_memctrl_kobj));
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edac_memctrl_kobj.parent = &edac_class.kset.kobj;
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edac_memctrl_kobj.ktype = &ktype_memctrl;
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/* generate sysfs "..../edac/mc" */
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err = kobject_set_name(&edac_memctrl_kobj,"mc");
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if (err)
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goto fail;
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/* FIXME: maybe new sysdev_create_subdir() */
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err = kobject_register(&edac_memctrl_kobj);
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if (err) {
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debugf1("Failed to register '.../edac/mc'\n");
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goto fail;
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}
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debugf1("Registered '.../edac/mc' kobject\n");
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return 0;
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fail:
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sysdev_class_unregister(&edac_class);
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return err;
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}
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/*
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* MC teardown:
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* the '..../edac/mc' kobject followed by '..../edac' itself
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*/
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void edac_sysfs_memctrl_teardown(void)
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{
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debugf0("MC: " __FILE__ ": %s()\n", __func__);
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/* Unregister the MC's kobject and wait for reference count to reach 0.
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*/
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init_completion(&edac_memctrl_kobj_complete);
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kobject_unregister(&edac_memctrl_kobj);
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wait_for_completion(&edac_memctrl_kobj_complete);
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/* Unregister the 'edac' object */
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sysdev_class_unregister(&edac_class);
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}
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/* EDAC sysfs CSROW data structures and methods
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*/
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/* Set of more default csrow<id> attribute show/store functions */
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static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data, int private)
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{
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return sprintf(data,"%u\n", csrow->ue_count);
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}
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static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data, int private)
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{
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return sprintf(data,"%u\n", csrow->ce_count);
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}
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static ssize_t csrow_size_show(struct csrow_info *csrow, char *data, int private)
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{
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return sprintf(data,"%u\n", PAGES_TO_MiB(csrow->nr_pages));
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}
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static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data, int private)
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{
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return sprintf(data,"%s\n", mem_types[csrow->mtype]);
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}
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static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data, int private)
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{
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return sprintf(data,"%s\n", dev_types[csrow->dtype]);
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}
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static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data, int private)
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{
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return sprintf(data,"%s\n", edac_caps[csrow->edac_mode]);
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}
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/* show/store functions for DIMM Label attributes */
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static ssize_t channel_dimm_label_show(struct csrow_info *csrow,
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char *data, int channel)
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{
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return snprintf(data, EDAC_MC_LABEL_LEN,"%s",
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csrow->channels[channel].label);
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}
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static ssize_t channel_dimm_label_store(struct csrow_info *csrow,
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const char *data,
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size_t count,
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int channel)
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{
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ssize_t max_size = 0;
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max_size = min((ssize_t)count,(ssize_t)EDAC_MC_LABEL_LEN-1);
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strncpy(csrow->channels[channel].label, data, max_size);
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csrow->channels[channel].label[max_size] = '\0';
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return max_size;
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}
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/* show function for dynamic chX_ce_count attribute */
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static ssize_t channel_ce_count_show(struct csrow_info *csrow,
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char *data,
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int channel)
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{
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return sprintf(data, "%u\n", csrow->channels[channel].ce_count);
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}
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/* csrow specific attribute structure */
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struct csrowdev_attribute {
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struct attribute attr;
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ssize_t (*show)(struct csrow_info *,char *,int);
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ssize_t (*store)(struct csrow_info *, const char *,size_t,int);
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int private;
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};
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#define to_csrow(k) container_of(k, struct csrow_info, kobj)
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#define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr)
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/* Set of show/store higher level functions for default csrow attributes */
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static ssize_t csrowdev_show(struct kobject *kobj,
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struct attribute *attr,
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char *buffer)
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{
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struct csrow_info *csrow = to_csrow(kobj);
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struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr);
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if (csrowdev_attr->show)
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return csrowdev_attr->show(csrow,
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buffer,
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csrowdev_attr->private);
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return -EIO;
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}
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static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr,
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const char *buffer, size_t count)
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{
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struct csrow_info *csrow = to_csrow(kobj);
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struct csrowdev_attribute * csrowdev_attr = to_csrowdev_attr(attr);
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if (csrowdev_attr->store)
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return csrowdev_attr->store(csrow,
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buffer,
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count,
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csrowdev_attr->private);
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return -EIO;
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}
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static struct sysfs_ops csrowfs_ops = {
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.show = csrowdev_show,
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.store = csrowdev_store
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};
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#define CSROWDEV_ATTR(_name,_mode,_show,_store,_private) \
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static struct csrowdev_attribute attr_##_name = { \
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.attr = {.name = __stringify(_name), .mode = _mode }, \
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.show = _show, \
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.store = _store, \
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.private = _private, \
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};
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/* default cwrow<id>/attribute files */
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CSROWDEV_ATTR(size_mb,S_IRUGO,csrow_size_show,NULL,0);
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CSROWDEV_ATTR(dev_type,S_IRUGO,csrow_dev_type_show,NULL,0);
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CSROWDEV_ATTR(mem_type,S_IRUGO,csrow_mem_type_show,NULL,0);
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CSROWDEV_ATTR(edac_mode,S_IRUGO,csrow_edac_mode_show,NULL,0);
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CSROWDEV_ATTR(ue_count,S_IRUGO,csrow_ue_count_show,NULL,0);
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CSROWDEV_ATTR(ce_count,S_IRUGO,csrow_ce_count_show,NULL,0);
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/* default attributes of the CSROW<id> object */
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static struct csrowdev_attribute *default_csrow_attr[] = {
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&attr_dev_type,
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&attr_mem_type,
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&attr_edac_mode,
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&attr_size_mb,
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&attr_ue_count,
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&attr_ce_count,
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NULL,
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};
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|
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/* possible dynamic channel DIMM Label attribute files */
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CSROWDEV_ATTR(ch0_dimm_label,S_IRUGO|S_IWUSR,
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channel_dimm_label_show,
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channel_dimm_label_store,
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0 );
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CSROWDEV_ATTR(ch1_dimm_label,S_IRUGO|S_IWUSR,
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channel_dimm_label_show,
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channel_dimm_label_store,
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1 );
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CSROWDEV_ATTR(ch2_dimm_label,S_IRUGO|S_IWUSR,
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channel_dimm_label_show,
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channel_dimm_label_store,
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2 );
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CSROWDEV_ATTR(ch3_dimm_label,S_IRUGO|S_IWUSR,
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channel_dimm_label_show,
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channel_dimm_label_store,
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3 );
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CSROWDEV_ATTR(ch4_dimm_label,S_IRUGO|S_IWUSR,
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channel_dimm_label_show,
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channel_dimm_label_store,
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4 );
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CSROWDEV_ATTR(ch5_dimm_label,S_IRUGO|S_IWUSR,
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channel_dimm_label_show,
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channel_dimm_label_store,
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5 );
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/* Total possible dynamic DIMM Label attribute file table */
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static struct csrowdev_attribute *dynamic_csrow_dimm_attr[] = {
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&attr_ch0_dimm_label,
|
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&attr_ch1_dimm_label,
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&attr_ch2_dimm_label,
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&attr_ch3_dimm_label,
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&attr_ch4_dimm_label,
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&attr_ch5_dimm_label
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};
|
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|
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/* possible dynamic channel ce_count attribute files */
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CSROWDEV_ATTR(ch0_ce_count,S_IRUGO|S_IWUSR,
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channel_ce_count_show,
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NULL,
|
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0 );
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CSROWDEV_ATTR(ch1_ce_count,S_IRUGO|S_IWUSR,
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channel_ce_count_show,
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NULL,
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1 );
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CSROWDEV_ATTR(ch2_ce_count,S_IRUGO|S_IWUSR,
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channel_ce_count_show,
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NULL,
|
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2 );
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CSROWDEV_ATTR(ch3_ce_count,S_IRUGO|S_IWUSR,
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channel_ce_count_show,
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NULL,
|
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3 );
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CSROWDEV_ATTR(ch4_ce_count,S_IRUGO|S_IWUSR,
|
|
channel_ce_count_show,
|
|
NULL,
|
|
4 );
|
|
CSROWDEV_ATTR(ch5_ce_count,S_IRUGO|S_IWUSR,
|
|
channel_ce_count_show,
|
|
NULL,
|
|
5 );
|
|
|
|
/* Total possible dynamic ce_count attribute file table */
|
|
static struct csrowdev_attribute *dynamic_csrow_ce_count_attr[] = {
|
|
&attr_ch0_ce_count,
|
|
&attr_ch1_ce_count,
|
|
&attr_ch2_ce_count,
|
|
&attr_ch3_ce_count,
|
|
&attr_ch4_ce_count,
|
|
&attr_ch5_ce_count
|
|
};
|
|
|
|
|
|
#define EDAC_NR_CHANNELS 6
|
|
|
|
/* Create dynamic CHANNEL files, indexed by 'chan', under specifed CSROW */
|
|
static int edac_create_channel_files(struct kobject *kobj, int chan)
|
|
{
|
|
int err=-ENODEV;
|
|
|
|
if (chan >= EDAC_NR_CHANNELS)
|
|
return err;
|
|
|
|
/* create the DIMM label attribute file */
|
|
err = sysfs_create_file(kobj,
|
|
(struct attribute *) dynamic_csrow_dimm_attr[chan]);
|
|
|
|
if (!err) {
|
|
/* create the CE Count attribute file */
|
|
err = sysfs_create_file(kobj,
|
|
(struct attribute *) dynamic_csrow_ce_count_attr[chan]);
|
|
} else {
|
|
debugf1("%s() dimm labels and ce_count files created", __func__);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/* No memory to release for this kobj */
|
|
static void edac_csrow_instance_release(struct kobject *kobj)
|
|
{
|
|
struct csrow_info *cs;
|
|
|
|
cs = container_of(kobj, struct csrow_info, kobj);
|
|
complete(&cs->kobj_complete);
|
|
}
|
|
|
|
/* the kobj_type instance for a CSROW */
|
|
static struct kobj_type ktype_csrow = {
|
|
.release = edac_csrow_instance_release,
|
|
.sysfs_ops = &csrowfs_ops,
|
|
.default_attrs = (struct attribute **) default_csrow_attr,
|
|
};
|
|
|
|
/* Create a CSROW object under specifed edac_mc_device */
|
|
static int edac_create_csrow_object(
|
|
struct kobject *edac_mci_kobj,
|
|
struct csrow_info *csrow,
|
|
int index)
|
|
{
|
|
int err = 0;
|
|
int chan;
|
|
|
|
memset(&csrow->kobj, 0, sizeof(csrow->kobj));
|
|
|
|
/* generate ..../edac/mc/mc<id>/csrow<index> */
|
|
|
|
csrow->kobj.parent = edac_mci_kobj;
|
|
csrow->kobj.ktype = &ktype_csrow;
|
|
|
|
/* name this instance of csrow<id> */
|
|
err = kobject_set_name(&csrow->kobj,"csrow%d",index);
|
|
if (err)
|
|
goto error_exit;
|
|
|
|
/* Instanstiate the csrow object */
|
|
err = kobject_register(&csrow->kobj);
|
|
if (!err) {
|
|
/* Create the dyanmic attribute files on this csrow,
|
|
* namely, the DIMM labels and the channel ce_count
|
|
*/
|
|
for (chan = 0; chan < csrow->nr_channels; chan++) {
|
|
err = edac_create_channel_files(&csrow->kobj,chan);
|
|
if (err)
|
|
break;
|
|
}
|
|
}
|
|
|
|
error_exit:
|
|
return err;
|
|
}
|
|
|
|
/* default sysfs methods and data structures for the main MCI kobject */
|
|
|
|
static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci,
|
|
const char *data, size_t count)
|
|
{
|
|
int row, chan;
|
|
|
|
mci->ue_noinfo_count = 0;
|
|
mci->ce_noinfo_count = 0;
|
|
mci->ue_count = 0;
|
|
mci->ce_count = 0;
|
|
|
|
for (row = 0; row < mci->nr_csrows; row++) {
|
|
struct csrow_info *ri = &mci->csrows[row];
|
|
|
|
ri->ue_count = 0;
|
|
ri->ce_count = 0;
|
|
|
|
for (chan = 0; chan < ri->nr_channels; chan++)
|
|
ri->channels[chan].ce_count = 0;
|
|
}
|
|
|
|
mci->start_time = jiffies;
|
|
return count;
|
|
}
|
|
|
|
/* memory scrubbing */
|
|
static ssize_t mci_sdram_scrub_rate_store(struct mem_ctl_info *mci,
|
|
const char *data, size_t count)
|
|
{
|
|
u32 bandwidth = -1;
|
|
|
|
if (mci->set_sdram_scrub_rate) {
|
|
|
|
memctrl_int_store(&bandwidth, data, count);
|
|
|
|
if (!(*mci->set_sdram_scrub_rate)(mci, &bandwidth)) {
|
|
edac_printk(KERN_DEBUG, EDAC_MC,
|
|
"Scrub rate set successfully, applied: %d\n",
|
|
bandwidth);
|
|
} else {
|
|
/* FIXME: error codes maybe? */
|
|
edac_printk(KERN_DEBUG, EDAC_MC,
|
|
"Scrub rate set FAILED, could not apply: %d\n",
|
|
bandwidth);
|
|
}
|
|
} else {
|
|
/* FIXME: produce "not implemented" ERROR for user-side. */
|
|
edac_printk(KERN_WARNING, EDAC_MC,
|
|
"Memory scrubbing 'set'control is not implemented!\n");
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static ssize_t mci_sdram_scrub_rate_show(struct mem_ctl_info *mci, char *data)
|
|
{
|
|
u32 bandwidth = -1;
|
|
|
|
if (mci->get_sdram_scrub_rate) {
|
|
if (!(*mci->get_sdram_scrub_rate)(mci, &bandwidth)) {
|
|
edac_printk(KERN_DEBUG, EDAC_MC,
|
|
"Scrub rate successfully, fetched: %d\n",
|
|
bandwidth);
|
|
} else {
|
|
/* FIXME: error codes maybe? */
|
|
edac_printk(KERN_DEBUG, EDAC_MC,
|
|
"Scrub rate fetch FAILED, got: %d\n",
|
|
bandwidth);
|
|
}
|
|
} else {
|
|
/* FIXME: produce "not implemented" ERROR for user-side. */
|
|
edac_printk(KERN_WARNING, EDAC_MC,
|
|
"Memory scrubbing 'get' control is not implemented!\n");
|
|
}
|
|
return sprintf(data, "%d\n", bandwidth);
|
|
}
|
|
|
|
/* default attribute files for the MCI object */
|
|
static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data)
|
|
{
|
|
return sprintf(data,"%d\n", mci->ue_count);
|
|
}
|
|
|
|
static ssize_t mci_ce_count_show(struct mem_ctl_info *mci, char *data)
|
|
{
|
|
return sprintf(data,"%d\n", mci->ce_count);
|
|
}
|
|
|
|
static ssize_t mci_ce_noinfo_show(struct mem_ctl_info *mci, char *data)
|
|
{
|
|
return sprintf(data,"%d\n", mci->ce_noinfo_count);
|
|
}
|
|
|
|
static ssize_t mci_ue_noinfo_show(struct mem_ctl_info *mci, char *data)
|
|
{
|
|
return sprintf(data,"%d\n", mci->ue_noinfo_count);
|
|
}
|
|
|
|
static ssize_t mci_seconds_show(struct mem_ctl_info *mci, char *data)
|
|
{
|
|
return sprintf(data,"%ld\n", (jiffies - mci->start_time) / HZ);
|
|
}
|
|
|
|
static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data)
|
|
{
|
|
return sprintf(data,"%s\n", mci->ctl_name);
|
|
}
|
|
|
|
static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data)
|
|
{
|
|
int total_pages, csrow_idx;
|
|
|
|
for (total_pages = csrow_idx = 0; csrow_idx < mci->nr_csrows;
|
|
csrow_idx++) {
|
|
struct csrow_info *csrow = &mci->csrows[csrow_idx];
|
|
|
|
if (!csrow->nr_pages)
|
|
continue;
|
|
|
|
total_pages += csrow->nr_pages;
|
|
}
|
|
|
|
return sprintf(data,"%u\n", PAGES_TO_MiB(total_pages));
|
|
}
|
|
|
|
struct mcidev_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct mem_ctl_info *,char *);
|
|
ssize_t (*store)(struct mem_ctl_info *, const char *,size_t);
|
|
};
|
|
|
|
#define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj)
|
|
#define to_mcidev_attr(a) container_of(a, struct mcidev_attribute, attr)
|
|
|
|
/* MCI show/store functions for top most object */
|
|
static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr,
|
|
char *buffer)
|
|
{
|
|
struct mem_ctl_info *mem_ctl_info = to_mci(kobj);
|
|
struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr);
|
|
|
|
if (mcidev_attr->show)
|
|
return mcidev_attr->show(mem_ctl_info, buffer);
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr,
|
|
const char *buffer, size_t count)
|
|
{
|
|
struct mem_ctl_info *mem_ctl_info = to_mci(kobj);
|
|
struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr);
|
|
|
|
if (mcidev_attr->store)
|
|
return mcidev_attr->store(mem_ctl_info, buffer, count);
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
static struct sysfs_ops mci_ops = {
|
|
.show = mcidev_show,
|
|
.store = mcidev_store
|
|
};
|
|
|
|
#define MCIDEV_ATTR(_name,_mode,_show,_store) \
|
|
static struct mcidev_attribute mci_attr_##_name = { \
|
|
.attr = {.name = __stringify(_name), .mode = _mode }, \
|
|
.show = _show, \
|
|
.store = _store, \
|
|
};
|
|
|
|
/* default Control file */
|
|
MCIDEV_ATTR(reset_counters,S_IWUSR,NULL,mci_reset_counters_store);
|
|
|
|
/* default Attribute files */
|
|
MCIDEV_ATTR(mc_name,S_IRUGO,mci_ctl_name_show,NULL);
|
|
MCIDEV_ATTR(size_mb,S_IRUGO,mci_size_mb_show,NULL);
|
|
MCIDEV_ATTR(seconds_since_reset,S_IRUGO,mci_seconds_show,NULL);
|
|
MCIDEV_ATTR(ue_noinfo_count,S_IRUGO,mci_ue_noinfo_show,NULL);
|
|
MCIDEV_ATTR(ce_noinfo_count,S_IRUGO,mci_ce_noinfo_show,NULL);
|
|
MCIDEV_ATTR(ue_count,S_IRUGO,mci_ue_count_show,NULL);
|
|
MCIDEV_ATTR(ce_count,S_IRUGO,mci_ce_count_show,NULL);
|
|
|
|
/* memory scrubber attribute file */
|
|
MCIDEV_ATTR(sdram_scrub_rate,S_IRUGO|S_IWUSR,mci_sdram_scrub_rate_show,mci_sdram_scrub_rate_store);
|
|
|
|
static struct mcidev_attribute *mci_attr[] = {
|
|
&mci_attr_reset_counters,
|
|
&mci_attr_mc_name,
|
|
&mci_attr_size_mb,
|
|
&mci_attr_seconds_since_reset,
|
|
&mci_attr_ue_noinfo_count,
|
|
&mci_attr_ce_noinfo_count,
|
|
&mci_attr_ue_count,
|
|
&mci_attr_ce_count,
|
|
&mci_attr_sdram_scrub_rate,
|
|
NULL
|
|
};
|
|
|
|
/*
|
|
* Release of a MC controlling instance
|
|
*/
|
|
static void edac_mci_instance_release(struct kobject *kobj)
|
|
{
|
|
struct mem_ctl_info *mci;
|
|
|
|
mci = to_mci(kobj);
|
|
debugf0("%s() idx=%d\n", __func__, mci->mc_idx);
|
|
complete(&mci->kobj_complete);
|
|
}
|
|
|
|
static struct kobj_type ktype_mci = {
|
|
.release = edac_mci_instance_release,
|
|
.sysfs_ops = &mci_ops,
|
|
.default_attrs = (struct attribute **) mci_attr,
|
|
};
|
|
|
|
|
|
#define EDAC_DEVICE_SYMLINK "device"
|
|
|
|
/*
|
|
* Create a new Memory Controller kobject instance,
|
|
* mc<id> under the 'mc' directory
|
|
*
|
|
* Return:
|
|
* 0 Success
|
|
* !0 Failure
|
|
*/
|
|
int edac_create_sysfs_mci_device(struct mem_ctl_info *mci)
|
|
{
|
|
int i;
|
|
int err;
|
|
struct csrow_info *csrow;
|
|
struct kobject *edac_mci_kobj=&mci->edac_mci_kobj;
|
|
|
|
debugf0("%s() idx=%d\n", __func__, mci->mc_idx);
|
|
memset(edac_mci_kobj, 0, sizeof(*edac_mci_kobj));
|
|
|
|
/* set the name of the mc<id> object */
|
|
err = kobject_set_name(edac_mci_kobj,"mc%d",mci->mc_idx);
|
|
if (err)
|
|
return err;
|
|
|
|
/* link to our parent the '..../edac/mc' object */
|
|
edac_mci_kobj->parent = &edac_memctrl_kobj;
|
|
edac_mci_kobj->ktype = &ktype_mci;
|
|
|
|
/* register the mc<id> kobject */
|
|
err = kobject_register(edac_mci_kobj);
|
|
if (err)
|
|
return err;
|
|
|
|
/* create a symlink for the device */
|
|
err = sysfs_create_link(edac_mci_kobj, &mci->dev->kobj,
|
|
EDAC_DEVICE_SYMLINK);
|
|
if (err)
|
|
goto fail0;
|
|
|
|
/* Make directories for each CSROW object
|
|
* under the mc<id> kobject
|
|
*/
|
|
for (i = 0; i < mci->nr_csrows; i++) {
|
|
csrow = &mci->csrows[i];
|
|
|
|
/* Only expose populated CSROWs */
|
|
if (csrow->nr_pages > 0) {
|
|
err = edac_create_csrow_object(edac_mci_kobj,csrow,i);
|
|
if (err)
|
|
goto fail1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
/* CSROW error: backout what has already been registered, */
|
|
fail1:
|
|
for ( i--; i >= 0; i--) {
|
|
if (csrow->nr_pages > 0) {
|
|
init_completion(&csrow->kobj_complete);
|
|
kobject_unregister(&mci->csrows[i].kobj);
|
|
wait_for_completion(&csrow->kobj_complete);
|
|
}
|
|
}
|
|
|
|
fail0:
|
|
init_completion(&mci->kobj_complete);
|
|
kobject_unregister(edac_mci_kobj);
|
|
wait_for_completion(&mci->kobj_complete);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* remove a Memory Controller instance
|
|
*/
|
|
void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
|
|
{
|
|
int i;
|
|
|
|
debugf0("%s()\n", __func__);
|
|
|
|
/* remove all csrow kobjects */
|
|
for (i = 0; i < mci->nr_csrows; i++) {
|
|
if (mci->csrows[i].nr_pages > 0) {
|
|
init_completion(&mci->csrows[i].kobj_complete);
|
|
kobject_unregister(&mci->csrows[i].kobj);
|
|
wait_for_completion(&mci->csrows[i].kobj_complete);
|
|
}
|
|
}
|
|
|
|
sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK);
|
|
init_completion(&mci->kobj_complete);
|
|
kobject_unregister(&mci->edac_mci_kobj);
|
|
wait_for_completion(&mci->kobj_complete);
|
|
}
|
|
|
|
|