diff options
Diffstat (limited to 'drivers/edac/edac_mc.c')
| -rw-r--r-- | drivers/edac/edac_mc.c | 1097 |
1 files changed, 407 insertions, 690 deletions
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index ea06e3a4dc3..4bde30bb3be 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -1,6 +1,6 @@ /* * edac_mc kernel module - * (C) 2005 Linux Networx (http://lnxi.com) + * (C) 2005, 2006 Linux Networx (http://lnxi.com) * This file may be distributed under the terms of the * GNU General Public License. * @@ -12,7 +12,6 @@ * */ -#include <linux/config.h> #include <linux/module.h> #include <linux/proc_fs.h> #include <linux/kernel.h> @@ -34,13 +33,8 @@ #include <asm/edac.h> #include "edac_mc.h" -#define EDAC_MC_VERSION "Ver: 2.0.0 " __DATE__ +#define EDAC_MC_VERSION "Ver: 2.0.1 " __DATE__ -/* For now, disable the EDAC sysfs code. The sysfs interface that EDAC - * presents to user space needs more thought, and is likely to change - * substantially. - */ -#define DISABLE_EDAC_SYSFS #ifdef CONFIG_EDAC_DEBUG /* Values of 0 to 4 will generate output */ @@ -54,35 +48,23 @@ static int log_ce = 1; static int panic_on_ue; static int poll_msec = 1000; -static int check_pci_parity = 0; /* default YES check PCI parity */ -static int panic_on_pci_parity; /* default no panic on PCI Parity */ -static atomic_t pci_parity_count = ATOMIC_INIT(0); - /* lock to memory controller's control array */ static DECLARE_MUTEX(mem_ctls_mutex); static struct list_head mc_devices = LIST_HEAD_INIT(mc_devices); static struct task_struct *edac_thread; -/* Structure of the whitelist and blacklist arrays */ -struct edac_pci_device_list { - unsigned int vendor; /* Vendor ID */ - unsigned int device; /* Deviice ID */ -}; - -#define MAX_LISTED_PCI_DEVICES 32 - -/* List of PCI devices (vendor-id:device-id) that should be skipped */ -static struct edac_pci_device_list pci_blacklist[MAX_LISTED_PCI_DEVICES]; -static int pci_blacklist_count; +#ifdef CONFIG_PCI +static int check_pci_parity = 0; /* default YES check PCI parity */ +static int panic_on_pci_parity; /* default no panic on PCI Parity */ +static atomic_t pci_parity_count = ATOMIC_INIT(0); -/* List of PCI devices (vendor-id:device-id) that should be scanned */ -static struct edac_pci_device_list pci_whitelist[MAX_LISTED_PCI_DEVICES]; -static int pci_whitelist_count ; +static struct kobject edac_pci_kobj; /* /sys/devices/system/edac/pci */ +static struct completion edac_pci_kobj_complete; +#endif /* CONFIG_PCI */ /* START sysfs data and methods */ -#ifndef DISABLE_EDAC_SYSFS static const char *mem_types[] = { [MEM_EMPTY] = "Empty", @@ -127,35 +109,24 @@ static struct sysdev_class edac_class = { set_kset_name("edac"), }; -/* sysfs objects: +/* sysfs object: * /sys/devices/system/edac/mc - * /sys/devices/system/edac/pci */ static struct kobject edac_memctrl_kobj; -static struct kobject edac_pci_kobj; /* We use these to wait for the reference counts on edac_memctrl_kobj and * edac_pci_kobj to reach 0. */ static struct completion edac_memctrl_kobj_complete; -static struct completion edac_pci_kobj_complete; /* * /sys/devices/system/edac/mc; * data structures and methods */ -#if 0 -static ssize_t memctrl_string_show(void *ptr, char *buffer) -{ - char *value = (char*) ptr; - return sprintf(buffer, "%s\n", value); -} -#endif - static ssize_t memctrl_int_show(void *ptr, char *buffer) { int *value = (int*) ptr; - return sprintf(buffer, "%d\n", *value); + return sprintf(buffer, "%u\n", *value); } static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count) @@ -221,11 +192,6 @@ struct memctrl_dev_attribute attr_##_name = { \ .store = _store, \ }; -/* cwrow<id> attribute f*/ -#if 0 -MEMCTRL_STRING_ATTR(mc_version,EDAC_MC_VERSION,S_IRUGO,memctrl_string_show,NULL); -#endif - /* csrow<id> control files */ MEMCTRL_ATTR(panic_on_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); MEMCTRL_ATTR(log_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); @@ -254,8 +220,6 @@ static struct kobj_type ktype_memctrl = { .default_attrs = (struct attribute **) memctrl_attr, }; -#endif /* DISABLE_EDAC_SYSFS */ - /* Initialize the main sysfs entries for edac: * /sys/devices/system/edac * @@ -265,11 +229,6 @@ static struct kobj_type ktype_memctrl = { * !0 FAILURE */ static int edac_sysfs_memctrl_setup(void) -#ifdef DISABLE_EDAC_SYSFS -{ - return 0; -} -#else { int err=0; @@ -301,7 +260,6 @@ static int edac_sysfs_memctrl_setup(void) return err; } -#endif /* DISABLE_EDAC_SYSFS */ /* * MC teardown: @@ -309,7 +267,6 @@ static int edac_sysfs_memctrl_setup(void) */ static void edac_sysfs_memctrl_teardown(void) { -#ifndef DISABLE_EDAC_SYSFS debugf0("MC: " __FILE__ ": %s()\n", __func__); /* Unregister the MC's kobject and wait for reference count to reach @@ -321,142 +278,9 @@ static void edac_sysfs_memctrl_teardown(void) /* Unregister the 'edac' object */ sysdev_class_unregister(&edac_class); -#endif /* DISABLE_EDAC_SYSFS */ } -#ifndef DISABLE_EDAC_SYSFS - -/* - * /sys/devices/system/edac/pci; - * data structures and methods - */ - -struct list_control { - struct edac_pci_device_list *list; - int *count; -}; - -#if 0 -/* Output the list as: vendor_id:device:id<,vendor_id:device_id> */ -static ssize_t edac_pci_list_string_show(void *ptr, char *buffer) -{ - struct list_control *listctl; - struct edac_pci_device_list *list; - char *p = buffer; - int len=0; - int i; - - listctl = ptr; - list = listctl->list; - - for (i = 0; i < *(listctl->count); i++, list++ ) { - if (len > 0) - len += snprintf(p + len, (PAGE_SIZE-len), ","); - - len += snprintf(p + len, - (PAGE_SIZE-len), - "%x:%x", - list->vendor,list->device); - } - - len += snprintf(p + len,(PAGE_SIZE-len), "\n"); - return (ssize_t) len; -} - -/** - * - * Scan string from **s to **e looking for one 'vendor:device' tuple - * where each field is a hex value - * - * return 0 if an entry is NOT found - * return 1 if an entry is found - * fill in *vendor_id and *device_id with values found - * - * In both cases, make sure *s has been moved forward toward *e - */ -static int parse_one_device(const char **s,const char **e, - unsigned int *vendor_id, unsigned int *device_id) -{ - const char *runner, *p; - - /* if null byte, we are done */ - if (!**s) { - (*s)++; /* keep *s moving */ - return 0; - } - - /* skip over newlines & whitespace */ - if ((**s == '\n') || isspace(**s)) { - (*s)++; - return 0; - } - - if (!isxdigit(**s)) { - (*s)++; - return 0; - } - - /* parse vendor_id */ - runner = *s; - - while (runner < *e) { - /* scan for vendor:device delimiter */ - if (*runner == ':') { - *vendor_id = simple_strtol((char*) *s, (char**) &p, 16); - runner = p + 1; - break; - } - - runner++; - } - - if (!isxdigit(*runner)) { - *s = ++runner; - return 0; - } - - /* parse device_id */ - if (runner < *e) { - *device_id = simple_strtol((char*)runner, (char**)&p, 16); - runner = p; - } - - *s = runner; - return 1; -} - -static ssize_t edac_pci_list_string_store(void *ptr, const char *buffer, - size_t count) -{ - struct list_control *listctl; - struct edac_pci_device_list *list; - unsigned int vendor_id, device_id; - const char *s, *e; - int *index; - - s = (char*)buffer; - e = s + count; - listctl = ptr; - list = listctl->list; - index = listctl->count; - *index = 0; - - while (*index < MAX_LISTED_PCI_DEVICES) { - if (parse_one_device(&s,&e,&vendor_id,&device_id)) { - list[ *index ].vendor = vendor_id; - list[ *index ].device = device_id; - (*index)++; - } - - /* check for all data consume */ - if (s >= e) - break; - } - - return count; -} - -#endif +#ifdef CONFIG_PCI static ssize_t edac_pci_int_show(void *ptr, char *buffer) { int *value = ptr; @@ -524,31 +348,6 @@ struct edac_pci_dev_attribute edac_pci_attr_##_name = { \ .store = _store, \ }; -#if 0 -static struct list_control pci_whitelist_control = { - .list = pci_whitelist, - .count = &pci_whitelist_count -}; - -static struct list_control pci_blacklist_control = { - .list = pci_blacklist, - .count = &pci_blacklist_count -}; - -/* whitelist attribute */ -EDAC_PCI_STRING_ATTR(pci_parity_whitelist, - &pci_whitelist_control, - S_IRUGO|S_IWUSR, - edac_pci_list_string_show, - edac_pci_list_string_store); - -EDAC_PCI_STRING_ATTR(pci_parity_blacklist, - &pci_blacklist_control, - S_IRUGO|S_IWUSR, - edac_pci_list_string_show, - edac_pci_list_string_store); -#endif - /* PCI Parity control files */ EDAC_PCI_ATTR(check_pci_parity, S_IRUGO|S_IWUSR, edac_pci_int_show, edac_pci_int_store); @@ -577,18 +376,11 @@ static struct kobj_type ktype_edac_pci = { .default_attrs = (struct attribute **) edac_pci_attr, }; -#endif /* DISABLE_EDAC_SYSFS */ - /** * edac_sysfs_pci_setup() * */ static int edac_sysfs_pci_setup(void) -#ifdef DISABLE_EDAC_SYSFS -{ - return 0; -} -#else { int err; @@ -612,146 +404,291 @@ static int edac_sysfs_pci_setup(void) return err; } -#endif /* DISABLE_EDAC_SYSFS */ static void edac_sysfs_pci_teardown(void) { -#ifndef DISABLE_EDAC_SYSFS debugf0("%s()\n", __func__); init_completion(&edac_pci_kobj_complete); kobject_unregister(&edac_pci_kobj); wait_for_completion(&edac_pci_kobj_complete); -#endif } -#ifndef DISABLE_EDAC_SYSFS -/* EDAC sysfs CSROW data structures and methods */ - -/* Set of more detailed csrow<id> attribute show/store functions */ -static ssize_t csrow_ch0_dimm_label_show(struct csrow_info *csrow, char *data) +static u16 get_pci_parity_status(struct pci_dev *dev, int secondary) { - ssize_t size = 0; + int where; + u16 status; + + where = secondary ? PCI_SEC_STATUS : PCI_STATUS; + pci_read_config_word(dev, where, &status); + + /* If we get back 0xFFFF then we must suspect that the card has been + * pulled but the Linux PCI layer has not yet finished cleaning up. + * We don't want to report on such devices + */ + + if (status == 0xFFFF) { + u32 sanity; + + pci_read_config_dword(dev, 0, &sanity); - if (csrow->nr_channels > 0) { - size = snprintf(data, EDAC_MC_LABEL_LEN,"%s\n", - csrow->channels[0].label); + if (sanity == 0xFFFFFFFF) + return 0; } - return size; + status &= PCI_STATUS_DETECTED_PARITY | PCI_STATUS_SIG_SYSTEM_ERROR | + PCI_STATUS_PARITY; + + if (status) + /* reset only the bits we are interested in */ + pci_write_config_word(dev, where, status); + + return status; } -static ssize_t csrow_ch1_dimm_label_show(struct csrow_info *csrow, char *data) +typedef void (*pci_parity_check_fn_t) (struct pci_dev *dev); + +/* Clear any PCI parity errors logged by this device. */ +static void edac_pci_dev_parity_clear(struct pci_dev *dev) { - ssize_t size = 0; + u8 header_type; - if (csrow->nr_channels > 0) { - size = snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", - csrow->channels[1].label); - } + get_pci_parity_status(dev, 0); - return size; + /* read the device TYPE, looking for bridges */ + pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); + + if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) + get_pci_parity_status(dev, 1); } -static ssize_t csrow_ch0_dimm_label_store(struct csrow_info *csrow, - const char *data, size_t size) +/* + * PCI Parity polling + * + */ +static void edac_pci_dev_parity_test(struct pci_dev *dev) { - ssize_t max_size = 0; + u16 status; + u8 header_type; + + /* read the STATUS register on this device + */ + status = get_pci_parity_status(dev, 0); + + debugf2("PCI STATUS= 0x%04x %s\n", status, dev->dev.bus_id ); + + /* check the status reg for errors */ + if (status) { + if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) + edac_printk(KERN_CRIT, EDAC_PCI, + "Signaled System Error on %s\n", + pci_name(dev)); + + if (status & (PCI_STATUS_PARITY)) { + edac_printk(KERN_CRIT, EDAC_PCI, + "Master Data Parity Error on %s\n", + pci_name(dev)); + + atomic_inc(&pci_parity_count); + } + + if (status & (PCI_STATUS_DETECTED_PARITY)) { + edac_printk(KERN_CRIT, EDAC_PCI, + "Detected Parity Error on %s\n", + pci_name(dev)); - if (csrow->nr_channels > 0) { - max_size = min((ssize_t)size,(ssize_t)EDAC_MC_LABEL_LEN-1); - strncpy(csrow->channels[0].label, data, max_size); - csrow->channels[0].label[max_size] = '\0'; + atomic_inc(&pci_parity_count); + } } - return size; + /* read the device TYPE, looking for bridges */ + pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); + + debugf2("PCI HEADER TYPE= 0x%02x %s\n", header_type, dev->dev.bus_id ); + + if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { + /* On bridges, need to examine secondary status register */ + status = get_pci_parity_status(dev, 1); + + debugf2("PCI SEC_STATUS= 0x%04x %s\n", + status, dev->dev.bus_id ); + + /* check the secondary status reg for errors */ + if (status) { + if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) + edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " + "Signaled System Error on %s\n", + pci_name(dev)); + + if (status & (PCI_STATUS_PARITY)) { + edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " + "Master Data Parity Error on " + "%s\n", pci_name(dev)); + + atomic_inc(&pci_parity_count); + } + + if (status & (PCI_STATUS_DETECTED_PARITY)) { + edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " + "Detected Parity Error on %s\n", + pci_name(dev)); + + atomic_inc(&pci_parity_count); + } + } + } } -static ssize_t csrow_ch1_dimm_label_store(struct csrow_info *csrow, - const char *data, size_t size) +/* + * pci_dev parity list iterator + * Scan the PCI device list for one iteration, looking for SERRORs + * Master Parity ERRORS or Parity ERRORs on primary or secondary devices + */ +static inline void edac_pci_dev_parity_iterator(pci_parity_check_fn_t fn) { - ssize_t max_size = 0; + struct pci_dev *dev = NULL; - if (csrow->nr_channels > 1) { - max_size = min((ssize_t)size,(ssize_t)EDAC_MC_LABEL_LEN-1); - strncpy(csrow->channels[1].label, data, max_size); - csrow->channels[1].label[max_size] = '\0'; + /* request for kernel access to the next PCI device, if any, + * and while we are looking at it have its reference count + * bumped until we are done with it + */ + while((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { + fn(dev); } - - return max_size; } -static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data) +static void do_pci_parity_check(void) { - return sprintf(data,"%u\n", csrow->ue_count); + unsigned long flags; + int before_count; + + debugf3("%s()\n", __func__); + + if (!check_pci_parity) + return; + + before_count = atomic_read(&pci_parity_count); + + /* scan all PCI devices looking for a Parity Error on devices and + * bridges + */ + local_irq_save(flags); + edac_pci_dev_parity_iterator(edac_pci_dev_parity_test); + local_irq_restore(flags); + + /* Only if operator has selected panic on PCI Error */ + if (panic_on_pci_parity) { + /* If the count is different 'after' from 'before' */ + if (before_count != atomic_read(&pci_parity_count)) + panic("EDAC: PCI Parity Error"); + } } -static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data) +static inline void clear_pci_parity_errors(void) { - return sprintf(data,"%u\n", csrow->ce_count); + /* Clear any PCI bus parity errors that devices initially have logged + * in their registers. + */ + edac_pci_dev_parity_iterator(edac_pci_dev_parity_clear); } -static ssize_t csrow_ch0_ce_count_show(struct csrow_info *csrow, char *data) -{ - ssize_t size = 0; +#else /* CONFIG_PCI */ - if (csrow->nr_channels > 0) { - size = sprintf(data,"%u\n", csrow->channels[0].ce_count); - } +/* pre-process these away */ +#define do_pci_parity_check() +#define clear_pci_parity_errors() +#define edac_sysfs_pci_teardown() +#define edac_sysfs_pci_setup() (0) - return size; -} +#endif /* CONFIG_PCI */ -static ssize_t csrow_ch1_ce_count_show(struct csrow_info *csrow, char *data) -{ - ssize_t size = 0; +/* EDAC sysfs CSROW data structures and methods + */ - if (csrow->nr_channels > 1) { - size = sprintf(data,"%u\n", csrow->channels[1].ce_count); - } +/* Set of more default csrow<id> attribute show/store functions */ +static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data, int private) +{ + return sprintf(data,"%u\n", csrow->ue_count); +} - return size; +static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data, int private) +{ + return sprintf(data,"%u\n", csrow->ce_count); } -static ssize_t csrow_size_show(struct csrow_info *csrow, char *data) +static ssize_t csrow_size_show(struct csrow_info *csrow, char *data, int private) { return sprintf(data,"%u\n", PAGES_TO_MiB(csrow->nr_pages)); } -static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data) +static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data, int private) { return sprintf(data,"%s\n", mem_types[csrow->mtype]); } -static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data) +static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data, int private) { return sprintf(data,"%s\n", dev_types[csrow->dtype]); } -static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data) +static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data, int private) { return sprintf(data,"%s\n", edac_caps[csrow->edac_mode]); } +/* show/store functions for DIMM Label attributes */ +static ssize_t channel_dimm_label_show(struct csrow_info *csrow, + char *data, int channel) +{ + return snprintf(data, EDAC_MC_LABEL_LEN,"%s", + csrow->channels[channel].label); +} + +static ssize_t channel_dimm_label_store(struct csrow_info *csrow, + const char *data, + size_t count, + int channel) +{ + ssize_t max_size = 0; + + max_size = min((ssize_t)count,(ssize_t)EDAC_MC_LABEL_LEN-1); + strncpy(csrow->channels[channel].label, data, max_size); + csrow->channels[channel].label[max_size] = '\0'; + + return max_size; +} + +/* show function for dynamic chX_ce_count attribute */ +static ssize_t channel_ce_count_show(struct csrow_info *csrow, + char *data, + int channel) +{ + return sprintf(data, "%u\n", csrow->channels[channel].ce_count); +} + +/* csrow specific attribute structure */ struct csrowdev_attribute { struct attribute attr; - ssize_t (*show)(struct csrow_info *,char *); - ssize_t (*store)(struct csrow_info *, const char *,size_t); + ssize_t (*show)(struct csrow_info *,char *,int); + ssize_t (*store)(struct csrow_info *, const char *,size_t,int); + int private; }; #define to_csrow(k) container_of(k, struct csrow_info, kobj) #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr) -/* Set of show/store higher level functions for csrow objects */ -static ssize_t csrowdev_show(struct kobject *kobj, struct attribute *attr, - char *buffer) +/* Set of show/store higher level functions for default csrow attributes */ +static ssize_t csrowdev_show(struct kobject *kobj, + struct attribute *attr, + char *buffer) { struct csrow_info *csrow = to_csrow(kobj); struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); if (csrowdev_attr->show) - return csrowdev_attr->show(csrow, buffer); - + return csrowdev_attr->show(csrow, + buffer, + csrowdev_attr->private); return -EIO; } @@ -762,8 +699,10 @@ static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr, struct csrowdev_attribute * csrowdev_attr = to_csrowdev_attr(attr); if (csrowdev_attr->store) - return csrowdev_attr->store(csrow, buffer, count); - + return csrowdev_attr->store(csrow, + buffer, + count, + csrowdev_attr->private); return -EIO; } @@ -772,69 +711,157 @@ static struct sysfs_ops csrowfs_ops = { .store = csrowdev_store }; -#define CSROWDEV_ATTR(_name,_mode,_show,_store) \ +#define CSROWDEV_ATTR(_name,_mode,_show,_store,_private) \ struct csrowdev_attribute attr_##_name = { \ .attr = {.name = __stringify(_name), .mode = _mode }, \ .show = _show, \ .store = _store, \ + .private = _private, \ }; -/* cwrow<id>/attribute files */ -CSROWDEV_ATTR(size_mb,S_IRUGO,csrow_size_show,NULL); -CSROWDEV_ATTR(dev_type,S_IRUGO,csrow_dev_type_show,NULL); -CSROWDEV_ATTR(mem_type,S_IRUGO,csrow_mem_type_show,NULL); -CSROWDEV_ATTR(edac_mode,S_IRUGO,csrow_edac_mode_show,NULL); -CSROWDEV_ATTR(ue_count,S_IRUGO,csrow_ue_count_show,NULL); -CSROWDEV_ATTR(ce_count,S_IRUGO,csrow_ce_count_show,NULL); -CSROWDEV_ATTR(ch0_ce_count,S_IRUGO,csrow_ch0_ce_count_show,NULL); -CSROWDEV_ATTR(ch1_ce_count,S_IRUGO,csrow_ch1_ce_count_show,NULL); - -/* control/attribute files */ -CSROWDEV_ATTR(ch0_dimm_label,S_IRUGO|S_IWUSR, - csrow_ch0_dimm_label_show, - csrow_ch0_dimm_label_store); -CSROWDEV_ATTR(ch1_dimm_label,S_IRUGO|S_IWUSR, - csrow_ch1_dimm_label_show, - csrow_ch1_dimm_label_store); +/* default cwrow<id>/attribute files */ +CSROWDEV_ATTR(size_mb,S_IRUGO,csrow_size_show,NULL,0); +CSROWDEV_ATTR(dev_type,S_IRUGO,csrow_dev_type_show,NULL,0); +CSROWDEV_ATTR(mem_type,S_IRUGO,csrow_mem_type_show,NULL,0); +CSROWDEV_ATTR(edac_mode,S_IRUGO,csrow_edac_mode_show,NULL,0); +CSROWDEV_ATTR(ue_count,S_IRUGO,csrow_ue_count_show,NULL,0); +CSROWDEV_ATTR(ce_count,S_IRUGO,csrow_ce_count_show,NULL,0); -/* Attributes of the CSROW<id> object */ -static struct csrowdev_attribute *csrow_attr[] = { +/* default attributes of the CSROW<id> object */ +static struct csrowdev_attribute *default_csrow_attr[] = { &attr_dev_type, &attr_mem_type, &attr_edac_mode, &attr_size_mb, &attr_ue_count, &attr_ce_count, - &attr_ch0_ce_count, - &attr_ch1_ce_count, - &attr_ch0_dimm_label, - &attr_ch1_dimm_label, NULL, }; -/* No memory to release */ + +/* possible dynamic channel DIMM Label attribute files */ +CSROWDEV_ATTR(ch0_dimm_label,S_IRUGO|S_IWUSR, + channel_dimm_label_show, + channel_dimm_label_store, + 0 ); +CSROWDEV_ATTR(ch1_dimm_label,S_IRUGO|S_IWUSR, + channel_dimm_label_show, + channel_dimm_label_store, + 1 ); +CSROWDEV_ATTR(ch2_dimm_label,S_IRUGO|S_IWUSR, + channel_dimm_label_show, + channel_dimm_label_store, + 2 ); +CSROWDEV_ATTR(ch3_dimm_label,S_IRUGO|S_IWUSR, + channel_dimm_label_show, + channel_dimm_label_store, + 3 ); +CSROWDEV_ATTR(ch4_dimm_label,S_IRUGO|S_IWUSR, + channel_dimm_label_show, + channel_dimm_label_store, + 4 ); +CSROWDEV_ATTR(ch5_dimm_label,S_IRUGO|S_IWUSR, + channel_dimm_label_show, + channel_dimm_label_store, + 5 ); + +/* Total possible dynamic DIMM Label attribute file table */ +static struct csrowdev_attribute *dynamic_csrow_dimm_attr[] = { + &attr_ch0_dimm_label, + &attr_ch1_dimm_label, + &attr_ch2_dimm_label, + &attr_ch3_dimm_label, + &attr_ch4_dimm_label, + &attr_ch5_dimm_label +}; + +/* possible dynamic channel ce_count attribute files */ +CSROWDEV_ATTR(ch0_ce_count,S_IRUGO|S_IWUSR, + channel_ce_count_show, + NULL, + 0 ); +CSROWDEV_ATTR(ch1_ce_count,S_IRUGO|S_IWUSR, + channel_ce_count_show, + NULL, + 1 ); +CSROWDEV_ATTR(ch2_ce_count,S_IRUGO|S_IWUSR, + channel_ce_count_show, + NULL, + 2 ); +CSROWDEV_ATTR(ch3_ce_count,S_IRUGO|S_IWUSR, + channel_ce_count_show, + NULL, + 3 ); +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; - debugf1("%s()\n", __func__); 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 **) csrow_attr, + .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) +static int edac_create_csrow_object( + struct kobject *edac_mci_kobj, + struct csrow_info *csrow, + int index) { int err = 0; + int chan; - debugf0("%s()\n", __func__); memset(&csrow->kobj, 0, sizeof(csrow->kobj)); /* generate ..../edac/mc/mc<id>/csrow<index> */ @@ -844,21 +871,27 @@ static int edac_create_csrow_object(struct kobject *edac_mci_kobj, /* 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) { - /* Instanstiate the csrow object */ - err = kobject_register(&csrow->kobj); - - if (err) - debugf0("Failed to register CSROW%d\n",index); - else - debugf0("Registered CSROW%d\n",index); + /* 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; } -/* sysfs data structures and methods for the MCI kobjects */ +/* 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) @@ -884,6 +917,7 @@ static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, return count; } +/* 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); @@ -909,71 +943,11 @@ 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_mod_name_show(struct mem_ctl_info *mci, char *data) -{ - return sprintf(data,"%s %s\n", mci->mod_name, mci->mod_ver); -} - static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data) { return sprintf(data,"%s\n", mci->ctl_name); } -static int mci_output_edac_cap(char *buf, unsigned long edac_cap) -{ - char *p = buf; - int bit_idx; - - for (bit_idx = 0; bit_idx < 8 * sizeof(edac_cap); bit_idx++) { - if ((edac_cap >> bit_idx) & 0x1) - p += sprintf(p, "%s ", edac_caps[bit_idx]); - } - - return p - buf; -} - -static ssize_t mci_edac_capability_show(struct mem_ctl_info *mci, char *data) -{ - char *p = data; - - p += mci_output_edac_cap(p,mci->edac_ctl_cap); - p += sprintf(p, "\n"); - return p - data; -} - -static ssize_t mci_edac_current_capability_show(struct mem_ctl_info *mci, - char *data) -{ - char *p = data; - - p += mci_output_edac_cap(p,mci->edac_cap); - p += sprintf(p, "\n"); - return p - data; -} - -static int mci_output_mtype_cap(char *buf, unsigned long mtype_cap) -{ - char *p = buf; - int bit_idx; - - for (bit_idx = 0; bit_idx < 8 * sizeof(mtype_cap); bit_idx++) { - if ((mtype_cap >> bit_idx) & 0x1) - p += sprintf(p, "%s ", mem_types[bit_idx]); - } - - return p - buf; -} - -static ssize_t mci_supported_mem_type_show(struct mem_ctl_info *mci, - char *data) -{ - char *p = data; - - p += mci_output_mtype_cap(p,mci->mtype_cap); - p += sprintf(p, "\n"); - return p - data; -} - static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) { int total_pages, csrow_idx; @@ -1000,6 +974,7 @@ struct mcidev_attribute { #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) { @@ -1036,31 +1011,21 @@ struct mcidev_attribute mci_attr_##_name = { \ .store = _store, \ }; -/* Control file */ +/* default Control file */ MCIDEV_ATTR(reset_counters,S_IWUSR,NULL,mci_reset_counters_store); -/* Attribute files */ +/* default Attribute files */ MCIDEV_ATTR(mc_name,S_IRUGO,mci_ctl_name_show,NULL); -MCIDEV_ATTR(module_name,S_IRUGO,mci_mod_name_show,NULL); -MCIDEV_ATTR(edac_capability,S_IRUGO,mci_edac_capability_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); -MCIDEV_ATTR(edac_current_capability,S_IRUGO, - mci_edac_current_capability_show,NULL); -MCIDEV_ATTR(supported_mem_type,S_IRUGO, - mci_supported_mem_type_show,NULL); static struct mcidev_attribute *mci_attr[] = { &mci_attr_reset_counters, - &mci_attr_module_name, &mci_attr_mc_name, - &mci_attr_edac_capability, - &mci_attr_edac_current_capability, - &mci_attr_supported_mem_type, &mci_attr_size_mb, &mci_attr_seconds_since_reset, &mci_attr_ue_noinfo_count, @@ -1088,7 +1053,6 @@ static struct kobj_type ktype_mci = { .default_attrs = (struct attribute **) mci_attr, }; -#endif /* DISABLE_EDAC_SYSFS */ #define EDAC_DEVICE_SYMLINK "device" @@ -1101,11 +1065,6 @@ static struct kobj_type ktype_mci = { * !0 Failure */ static int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) -#ifdef DISABLE_EDAC_SYSFS -{ - return 0; -} -#else { int i; int err; @@ -1117,7 +1076,6 @@ static int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) /* set the name of the mc<id> object */ err = kobject_set_name(edac_mci_kobj,"mc%d",mci->mc_idx); - if (err) return err; @@ -1127,14 +1085,12 @@ static int edac_create_sysfs_mci_device(struct mem_ctl_info *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->pdev->dev.kobj, + err = sysfs_create_link(edac_mci_kobj, &mci->dev->kobj, EDAC_DEVICE_SYMLINK); - if (err) goto fail0; @@ -1147,7 +1103,6 @@ static int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) /* Only expose populated CSROWs */ if (csrow->nr_pages > 0) { err = edac_create_csrow_object(edac_mci_kobj,csrow,i); - if (err) goto fail1; } @@ -1171,14 +1126,12 @@ fail0: wait_for_completion(&mci->kobj_complete); return err; } -#endif /* DISABLE_EDAC_SYSFS */ /* * remove a Memory Controller instance */ static void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) { -#ifndef DISABLE_EDAC_SYSFS int i; debugf0("%s()\n", __func__); @@ -1196,7 +1149,6 @@ static void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) init_completion(&mci->kobj_complete); kobject_unregister(&mci->edac_mci_kobj); wait_for_completion(&mci->kobj_complete); -#endif /* DISABLE_EDAC_SYSFS */ } /* END OF sysfs data and methods */ @@ -1238,7 +1190,7 @@ void edac_mc_dump_mci(struct mem_ctl_info *mci) debugf4("\tmci->edac_check = %p\n", mci->edac_check); debugf3("\tmci->nr_csrows = %d, csrows = %p\n", mci->nr_csrows, mci->csrows); - debugf3("\tpdev = %p\n", mci->pdev); + debugf3("\tdev = %p\n", mci->dev); debugf3("\tmod_name:ctl_name = %s:%s\n", mci->mod_name, mci->ctl_name); debugf3("\tpvt_info = %p\n\n", mci->pvt_info); @@ -1363,7 +1315,7 @@ void edac_mc_free(struct mem_ctl_info *mci) } EXPORT_SYMBOL_GPL(edac_mc_free); -static struct mem_ctl_info *find_mci_by_pdev(struct pci_dev *pdev) +static struct mem_ctl_info *find_mci_by_dev(struct device *dev) { struct mem_ctl_info *mci; struct list_head *item; @@ -1373,54 +1325,53 @@ static struct mem_ctl_info *find_mci_by_pdev(struct pci_dev *pdev) list_for_each(item, &mc_devices) { mci = list_entry(item, struct mem_ctl_info, link); - if (mci->pdev == pdev) + if (mci->dev == dev) return mci; } return NULL; } -static int add_mc_to_global_list(struct mem_ctl_info *mci) +/* Return 0 on success, 1 on failure. + * Before calling this function, caller must + * assign a unique value to mci->mc_idx. + */ +static int add_mc_to_global_list (struct mem_ctl_info *mci) { struct list_head *item, *insert_before; struct mem_ctl_info *p; - int i; - if (list_empty(&mc_devices)) { - mci->mc_idx = 0; - insert_before = &mc_devices; - } else { - if (find_mci_by_pdev(mci->pdev)) { - edac_printk(KERN_WARNING, EDAC_MC, - "%s (%s) %s %s already assigned %d\n", - mci->pdev->dev.bus_id, - pci_name(mci->pdev), mci->mod_name, - mci->ctl_name, mci->mc_idx); - return 1; - } + insert_before = &mc_devices; - insert_before = NULL; - i = 0; + if (unlikely((p = find_mci_by_dev(mci->dev)) != NULL)) + goto fail0; - list_for_each(item, &mc_devices) { - p = list_entry(item, struct mem_ctl_info, link); + list_for_each(item, &mc_devices) { + p = list_entry(item, struct mem_ctl_info, link); - if (p->mc_idx != i) { - insert_before = item; - break; - } + if (p->mc_idx >= mci->mc_idx) { + if (unlikely(p->mc_idx == mci->mc_idx)) + goto fail1; - i++; + insert_before = item; + break; } - - mci->mc_idx = i; - - if (insert_before == NULL) - insert_before = &mc_devices; } list_add_tail_rcu(&mci->link, insert_before); return 0; + +fail0: + edac_printk(KERN_WARNING, EDAC_MC, + "%s (%s) %s %s already assigned %d\n", p->dev->bus_id, + dev_name(p->dev), p->mod_name, p->ctl_name, p->mc_idx); + return 1; + +fail1: + edac_printk(KERN_WARNING, EDAC_MC, + "bug in low-level driver: attempt to assign\n" + " duplicate mc_idx %d in %s()\n", p->mc_idx, __func__); + return 1; } static void complete_mc_list_del(struct rcu_head *head) @@ -1444,6 +1395,7 @@ static void del_mc_from_global_list(struct mem_ctl_info *mci) * edac_mc_add_mc: Insert the 'mci' structure into the mci global list and * create sysfs entries associated with mci structure * @mci: pointer to the mci structure to be added to the list + * @mc_idx: A unique numeric identifier to be assigned to the 'mci' structure. * * Return: * 0 Success @@ -1451,9 +1403,10 @@ static void del_mc_from_global_list(struct mem_ctl_info *mci) */ /* FIXME - should a warning be printed if no error detection? correction? */ -int edac_mc_add_mc(struct mem_ctl_info *mci) +int edac_mc_add_mc(struct mem_ctl_info *mci, int mc_idx) { debugf0("%s()\n", __func__); + mci->mc_idx = mc_idx; #ifdef CONFIG_EDAC_DEBUG if (edac_debug_level >= 3) edac_mc_dump_mci(mci); @@ -1486,8 +1439,8 @@ int edac_mc_add_mc(struct mem_ctl_info *mci) } /* Report action taken */ - edac_mc_printk(mci, KERN_INFO, "Giving out device to %s %s: PCI %s\n", - mci->mod_name, mci->ctl_name, pci_name(mci->pdev)); + edac_mc_printk(mci, KERN_INFO, "Giving out device to %s %s: DEV %s\n", + mci->mod_name, mci->ctl_name, dev_name(mci->dev)); up(&mem_ctls_mutex); return 0; @@ -1504,18 +1457,18 @@ EXPORT_SYMBOL_GPL(edac_mc_add_mc); /** * edac_mc_del_mc: Remove sysfs entries for specified mci structure and * remove mci structure from global list - * @pdev: Pointer to 'struct pci_dev' representing mci structure to remove. + * @pdev: Pointer to 'struct device' representing mci structure to remove. * * Return pointer to removed mci structure, or NULL if device not found. */ -struct mem_ctl_info * edac_mc_del_mc(struct pci_dev *pdev) +struct mem_ctl_info * edac_mc_del_mc(struct device *dev) { struct mem_ctl_info *mci; debugf0("MC: %s()\n", __func__); down(&mem_ctls_mutex); - if ((mci = find_mci_by_pdev(pdev)) == NULL) { + if ((mci = find_mci_by_dev(dev)) == NULL) { up(&mem_ctls_mutex); return NULL; } @@ -1524,8 +1477,8 @@ struct mem_ctl_info * edac_mc_del_mc(struct pci_dev *pdev) del_mc_from_global_list(mci); up(&mem_ctls_mutex); edac_printk(KERN_INFO, EDAC_MC, - "Removed device %d for %s %s: PCI %s\n", mci->mc_idx, - mci->mod_name, mci->ctl_name, pci_name(mci->pdev)); + "Removed device %d for %s %s: DEV %s\n", mci->mc_idx, + mci->mod_name, mci->ctl_name, dev_name(mci->dev)); return mci; } EXPORT_SYMBOL_GPL(edac_mc_del_mc); @@ -1739,244 +1692,6 @@ void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, const char *msg) } EXPORT_SYMBOL_GPL(edac_mc_handle_ue_no_info); -#ifdef CONFIG_PCI - -static u16 get_pci_parity_status(struct pci_dev *dev, int secondary) -{ - int where; - u16 status; - - where = secondary ? PCI_SEC_STATUS : PCI_STATUS; - pci_read_config_word(dev, where, &status); - - /* If we get back 0xFFFF then we must suspect that the card has been - * pulled but the Linux PCI layer has not yet finished cleaning up. - * We don't want to report on such devices - */ - - if (status == 0xFFFF) { - u32 sanity; - - pci_read_config_dword(dev, 0, &sanity); - - if (sanity == 0xFFFFFFFF) - return 0; - } - - status &= PCI_STATUS_DETECTED_PARITY | PCI_STATUS_SIG_SYSTEM_ERROR | - PCI_STATUS_PARITY; - - if (status) - /* reset only the bits we are interested in */ - pci_write_config_word(dev, where, status); - - return status; -} - -typedef void (*pci_parity_check_fn_t) (struct pci_dev *dev); - -/* Clear any PCI parity errors logged by this device. */ -static void edac_pci_dev_parity_clear(struct pci_dev *dev) -{ - u8 header_type; - - get_pci_parity_status(dev, 0); - - /* read the device TYPE, looking for bridges */ - pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); - - if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) - get_pci_parity_status(dev, 1); -} - -/* - * PCI Parity polling - * - */ -static void edac_pci_dev_parity_test(struct pci_dev *dev) -{ - u16 status; - u8 header_type; - - /* read the STATUS register on this device - */ - status = get_pci_parity_status(dev, 0); - - debugf2("PCI STATUS= 0x%04x %s\n", status, dev->dev.bus_id ); - - /* check the status reg for errors */ - if (status) { - if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) - edac_printk(KERN_CRIT, EDAC_PCI, - "Signaled System Error on %s\n", - pci_name(dev)); - - if (status & (PCI_STATUS_PARITY)) { - edac_printk(KERN_CRIT, EDAC_PCI, - "Master Data Parity Error on %s\n", - pci_name(dev)); - - atomic_inc(&pci_parity_count); - } - - if (status & (PCI_STATUS_DETECTED_PARITY)) { - edac_printk(KERN_CRIT, EDAC_PCI, - "Detected Parity Error on %s\n", - pci_name(dev)); - - atomic_inc(&pci_parity_count); - } - } - - /* read the device TYPE, looking for bridges */ - pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); - - debugf2("PCI HEADER TYPE= 0x%02x %s\n", header_type, dev->dev.bus_id ); - - if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { - /* On bridges, need to examine secondary status register */ - status = get_pci_parity_status(dev, 1); - - debugf2("PCI SEC_STATUS= 0x%04x %s\n", - status, dev->dev.bus_id ); - - /* check the secondary status reg for errors */ - if (status) { - if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) - edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " - "Signaled System Error on %s\n", - pci_name(dev)); - - if (status & (PCI_STATUS_PARITY)) { - edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " - "Master Data Parity Error on " - "%s\n", pci_name(dev)); - - atomic_inc(&pci_parity_count); - } - - if (status & (PCI_STATUS_DETECTED_PARITY)) { - edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " - "Detected Parity Error on %s\n", - pci_name(dev)); - - atomic_inc(&pci_parity_count); - } - } - } -} - -/* - * check_dev_on_list: Scan for a PCI device on a white/black list - * @list: an EDAC &edac_pci_device_list white/black list pointer - * @free_index: index of next free entry on the list - * @pci_dev: PCI Device pointer - * - * see if list contains the device. - * - * Returns: 0 not found - * 1 found on list - */ -static int check_dev_on_list(struct edac_pci_device_list *list, - int free_index, struct pci_dev *dev) -{ - int i; - int rc = 0; /* Assume not found */ - unsigned short vendor=dev->vendor; - unsigned short device=dev->device; - - /* Scan the list, looking for a vendor/device match */ - for (i = 0; i < free_index; i++, list++ ) { - if ((list->vendor == vendor ) && (list->device == device )) { - rc = 1; - break; - } - } - - return rc; -} - -/* - * pci_dev parity list iterator - * Scan the PCI device list for one iteration, looking for SERRORs - * Master Parity ERRORS or Parity ERRORs on primary or secondary devices - */ -static inline void edac_pci_dev_parity_iterator(pci_parity_check_fn_t fn) -{ - struct pci_dev *dev = NULL; - - /* request for kernel access to the next PCI device, if any, - * and while we are looking at it have its reference count - * bumped until we are done with it - */ - while((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { - /* if whitelist exists then it has priority, so only scan - * those devices on the whitelist - */ - if (pci_whitelist_count > 0 ) { - if (check_dev_on_list(pci_whitelist, - pci_whitelist_count, dev)) - fn(dev); - } else { - /* - * if no whitelist, then check if this devices is - * blacklisted - */ - if (!check_dev_on_list(pci_blacklist, - pci_blacklist_count, dev)) - fn(dev); - } - } -} - -static void do_pci_parity_check(void) -{ - unsigned long flags; - int before_count; - - debugf3("%s()\n", __func__); - - if (!check_pci_parity) - return; - - before_count = atomic_read(&pci_parity_count); - - /* scan all PCI devices looking for a Parity Error on devices and - * bridges - */ - local_irq_save(flags); - edac_pci_dev_parity_iterator(edac_pci_dev_parity_test); - local_irq_restore(flags); - - /* Only if operator has selected panic on PCI Error */ - if (panic_on_pci_parity) { - /* If the count is different 'after' from 'before' */ - if (before_count != atomic_read(&pci_parity_count)) - panic("EDAC: PCI Parity Error"); - } -} - -static inline void clear_pci_parity_errors(void) -{ - /* Clear any PCI bus parity errors that devices initially have logged - * in their registers. - */ - edac_pci_dev_parity_iterator(edac_pci_dev_parity_clear); -} - -#else /* CONFIG_PCI */ - -static inline void do_pci_parity_check(void) -{ - /* no-op */ -} - -static inline void clear_pci_parity_errors(void) -{ - /* no-op */ -} - -#endif /* CONFIG_PCI */ /* * Iterate over all MC instances and check for ECC, et al, errors @@ -2096,10 +1811,12 @@ MODULE_DESCRIPTION("Core library routines for MC reporting"); module_param(panic_on_ue, int, 0644); MODULE_PARM_DESC(panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); +#ifdef CONFIG_PCI module_param(check_pci_parity, int, 0644); MODULE_PARM_DESC(check_pci_parity, "Check for PCI bus parity errors: 0=off 1=on"); module_param(panic_on_pci_parity, int, 0644); MODULE_PARM_DESC(panic_on_pci_parity, "Panic on PCI Bus Parity error: 0=off 1=on"); +#endif module_param(log_ue, int, 0644); MODULE_PARM_DESC(log_ue, "Log uncorrectable error to console: 0=off 1=on"); module_param(log_ce, int, 0644); |