diff options
| -rw-r--r-- | drivers/edac/edac_core.h | 52 | ||||
| -rw-r--r-- | drivers/edac/edac_device_sysfs.c | 51 | ||||
| -rw-r--r-- | drivers/edac/edac_mc_sysfs.c | 60 |
3 files changed, 141 insertions, 22 deletions
diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h index b955c58..8c11457 100644 --- a/drivers/edac/edac_core.h +++ b/drivers/edac/edac_core.h @@ -326,6 +326,18 @@ struct csrow_info { struct channel_info *channels; }; +/* mcidev_sysfs_attribute structure + * used for driver sysfs attributes and in mem_ctl_info + * sysfs top level entries + */ +struct mcidev_sysfs_attribute { + struct attribute attr; + ssize_t (*show)(struct mem_ctl_info *,char *); + ssize_t (*store)(struct mem_ctl_info *, const char *,size_t); +}; + +/* MEMORY controller information structure + */ struct mem_ctl_info { struct list_head link; /* for global list of mem_ctl_info structs */ unsigned long mtype_cap; /* memory types supported by mc */ @@ -353,6 +365,7 @@ struct mem_ctl_info { */ int (*get_sdram_scrub_rate) (struct mem_ctl_info * mci, u32 * bw); + /* pointer to edac checking routine */ void (*edac_check) (struct mem_ctl_info * mci); @@ -394,6 +407,18 @@ struct mem_ctl_info { struct kobject edac_mci_kobj; struct completion kobj_complete; + /* Additional top controller level attributes, but specified + * by the low level driver. + * + * Set by the low level driver to provide attributes at the + * controller level, same level as 'ue_count' and 'ce_count' above. + * An array of structures, NULL terminated + * + * If attributes are desired, then set to array of attributes + * If no attributes are desired, leave NULL + */ + struct mcidev_sysfs_attribute *mc_driver_sysfs_attributes; + /* work struct for this MC */ struct delayed_work work; @@ -402,7 +427,7 @@ struct mem_ctl_info { }; /* - * The following are the structures to provide for a generice + * The following are the structures to provide for a generic * 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. @@ -505,6 +530,16 @@ struct edac_device_instance { struct completion kobj_complete; }; +/* edac_dev_sysfs_attribute structure + * used for driver sysfs attributes and in mem_ctl_info + * sysfs top level entries + */ +struct edac_dev_sysfs_attribute { + struct attribute attr; + ssize_t (*show)(struct edac_device_ctl_info *,char *); + ssize_t (*store)(struct edac_device_ctl_info *, const char *,size_t); +}; + /* * Abstract edac_device control info structure * @@ -522,7 +557,20 @@ struct edac_device_ctl_info { 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 */ + /* Additional top controller level attributes, but specified + * by the low level driver. + * + * Set by the low level driver to provide attributes at the + * controller level, same level as 'ue_count' and 'ce_count' above. + * An array of structures, NULL terminated + * + * If attributes are desired, then set to array of attributes + * If no attributes are desired, leave NULL + */ + struct edac_dev_sysfs_attribute *sysfs_attributes; + + /* pointer to main 'edac' class in sysfs */ + struct sysdev_class *edac_class; /* the internal state of this controller instance */ int op_state; diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c index 849d569..32b2a8e 100644 --- a/drivers/edac/edac_device_sysfs.c +++ b/drivers/edac/edac_device_sysfs.c @@ -9,8 +9,6 @@ * */ -#include <linux/module.h> -#include <linux/sysdev.h> #include <linux/ctype.h> #include "edac_core.h" @@ -622,6 +620,34 @@ static void edac_device_delete_instances(struct edac_device_ctl_info *edac_dev) /******************* edac_dev sysfs ctor/dtor code *************/ /* + * edac_device_add_sysfs_attributes + * add some attributes to this instance's main kobject + */ +static int edac_device_add_sysfs_attributes( + struct edac_device_ctl_info *edac_dev) +{ + int err; + struct edac_dev_sysfs_attribute *sysfs_attrib; + + /* point to the start of the array and iterate over it + * adding each attribute listed to this mci instance's kobject + */ + sysfs_attrib = edac_dev->sysfs_attributes; + + while (sysfs_attrib->attr.name != NULL) { + err = sysfs_create_file(&edac_dev->kobj, + (struct attribute*) sysfs_attrib); + if (err) { + return err; + } + + sysfs_attrib++; + } + + return 0; +} + +/* * edac_device_create_sysfs() Constructor * * Create a new edac_device kobject instance, @@ -642,6 +668,18 @@ int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev) debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx); + /* If the low level driver requests some sysfs entries + * then go create them here + */ + if (edac_dev->sysfs_attributes != NULL) { + err = edac_device_add_sysfs_attributes(edac_dev); + if (err) { + debugf0("%s() failed to add sysfs attribs\n", + __func__); + goto err_unreg_object; + } + } + /* create a symlink from the edac device * to the platform 'device' being used for this */ @@ -650,7 +688,7 @@ int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev) if (err) { debugf0("%s() sysfs_create_link() returned err= %d\n", __func__, err); - return err; + goto err_unreg_object; } debugf0("%s() calling create-instances, idx=%d\n", @@ -659,14 +697,17 @@ int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev) /* Create the first level instance directories */ err = edac_device_create_instances(edac_dev); if (err) { - goto error0; + goto err_remove_link; } return 0; /* Error unwind stack */ +err_remove_link: + /* remove the sym link */ + sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK); - error0: +err_unreg_object: edac_device_unregister_main_kobj(edac_dev); return err; diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 8eaa1d6..029ce89 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -1,15 +1,14 @@ /* * edac_mc kernel module - * (C) 2005, 2006 Linux Networx (http://lnxi.com) + * (C) 2005-2007 Linux Networx (http://lnxi.com) + * * This file may be distributed under the terms of the * GNU General Public License. * - * Written Doug Thompson <norsk5@xmission.com> + * Written Doug Thompson <norsk5@xmission.com> www.softwarebitmaker.com * */ -#include <linux/module.h> -#include <linux/sysdev.h> #include <linux/ctype.h> #include "edac_core.h" @@ -661,21 +660,15 @@ static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) 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) +#define to_mcidev_attr(a) container_of(a,struct mcidev_sysfs_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); + struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); if (mcidev_attr->show) return mcidev_attr->show(mem_ctl_info, buffer); @@ -687,7 +680,7 @@ 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); + struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); if (mcidev_attr->store) return mcidev_attr->store(mem_ctl_info, buffer, count); @@ -701,7 +694,7 @@ static struct sysfs_ops mci_ops = { }; #define MCIDEV_ATTR(_name,_mode,_show,_store) \ -static struct mcidev_attribute mci_attr_##_name = { \ +static struct mcidev_sysfs_attribute mci_attr_##_name = { \ .attr = {.name = __stringify(_name), .mode = _mode }, \ .show = _show, \ .store = _store, \ @@ -723,7 +716,7 @@ MCIDEV_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL); 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[] = { +static struct mcidev_sysfs_attribute *mci_attr[] = { &mci_attr_reset_counters, &mci_attr_mc_name, &mci_attr_size_mb, @@ -757,6 +750,34 @@ static struct kobj_type ktype_mci = { #define EDAC_DEVICE_SYMLINK "device" /* + * edac_create_driver_attributes + * create MC driver specific attributes at the topmost level + * directory of this mci instance. + */ +static int edac_create_driver_attributes(struct mem_ctl_info *mci) +{ + int err; + struct mcidev_sysfs_attribute *sysfs_attrib; + + /* point to the start of the array and iterate over it + * adding each attribute listed to this mci instance's kobject + */ + sysfs_attrib = mci->mc_driver_sysfs_attributes; + + while (sysfs_attrib->attr.name != NULL) { + err = sysfs_create_file(&mci->edac_mci_kobj, + (struct attribute*) sysfs_attrib); + if (err) { + return err; + } + + sysfs_attrib++; + } + + return 0; +} + +/* * Create a new Memory Controller kobject instance, * mc<id> under the 'mc' directory * @@ -794,6 +815,15 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) if (err) goto fail0; + /* If the low level driver desires some attributes, + * then create them now for the driver. + */ + if (mci->mc_driver_sysfs_attributes) { + err = edac_create_driver_attributes(mci); + if (err) + goto fail0; + } + /* Make directories for each CSROW object * under the mc<id> kobject */ |
