/* * edac_mc kernel module * (C) 2005, 2006 Linux Networx (http://lnxi.com) * This file may be distributed under the terms of the * GNU General Public License. * * Written by Thayne Harbaugh * Based on work by Dan Hollis <goemon at anime dot net> and others. * http://www.anime.net/~goemon/linux-ecc/ * * Modified by Dave Peterson and Doug Thompson * */ #include <linux/module.h> #include <linux/proc_fs.h> #include <linux/kernel.h> #include <linux/types.h> #include <linux/smp.h> #include <linux/init.h> #include <linux/sysctl.h> #include <linux/highmem.h> #include <linux/timer.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/spinlock.h> #include <linux/list.h> #include <linux/sysdev.h> #include <linux/ctype.h> #include <linux/edac.h> #include <asm/uaccess.h> #include <asm/page.h> #include <asm/edac.h> #include "edac_core.h" #include "edac_module.h" /* lock to memory controller's control array */ static DEFINE_MUTEX(mem_ctls_mutex); static LIST_HEAD(mc_devices); #ifdef CONFIG_EDAC_DEBUG static void edac_mc_dump_channel(struct channel_info *chan) { debugf4("\tchannel = %p\n", chan); debugf4("\tchannel->chan_idx = %d\n", chan->chan_idx); debugf4("\tchannel->ce_count = %d\n", chan->ce_count); debugf4("\tchannel->label = '%s'\n", chan->label); debugf4("\tchannel->csrow = %p\n\n", chan->csrow); } static void edac_mc_dump_csrow(struct csrow_info *csrow) { debugf4("\tcsrow = %p\n", csrow); debugf4("\tcsrow->csrow_idx = %d\n", csrow->csrow_idx); debugf4("\tcsrow->first_page = 0x%lx\n", csrow->first_page); debugf4("\tcsrow->last_page = 0x%lx\n", csrow->last_page); debugf4("\tcsrow->page_mask = 0x%lx\n", csrow->page_mask); debugf4("\tcsrow->nr_pages = 0x%x\n", csrow->nr_pages); debugf4("\tcsrow->nr_channels = %d\n", csrow->nr_channels); debugf4("\tcsrow->channels = %p\n", csrow->channels); debugf4("\tcsrow->mci = %p\n\n", csrow->mci); } static void edac_mc_dump_mci(struct mem_ctl_info *mci) { debugf3("\tmci = %p\n", mci); debugf3("\tmci->mtype_cap = %lx\n", mci->mtype_cap); debugf3("\tmci->edac_ctl_cap = %lx\n", mci->edac_ctl_cap); debugf3("\tmci->edac_cap = %lx\n", mci->edac_cap); debugf4("\tmci->edac_check = %p\n", mci->edac_check); debugf3("\tmci->nr_csrows = %d, csrows = %p\n", mci->nr_csrows, mci->csrows); 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); } #endif /* CONFIG_EDAC_DEBUG */ /* 'ptr' points to a possibly unaligned item X such that sizeof(X) is 'size'. * Adjust 'ptr' so that its alignment is at least as stringent as what the * compiler would provide for X and return the aligned result. * * If 'size' is a constant, the compiler will optimize this whole function * down to either a no-op or the addition of a constant to the value of 'ptr'. */ void *edac_align_ptr(void *ptr, unsigned size) { unsigned align, r; /* Here we assume that the alignment of a "long long" is the most * stringent alignment that the compiler will ever provide by default. * As far as I know, this is a reasonable assumption. */ if (size > sizeof(long)) align = sizeof(long long); else if (size > sizeof(int)) align = sizeof(long); else if (size > sizeof(short)) align = sizeof(int); else if (size > sizeof(char)) align = sizeof(short); else return (char *)ptr; r = size % align; if (r == 0) return (char *)ptr; return (void *)(((unsigned long)ptr) + align - r); } /** * edac_mc_alloc: Allocate a struct mem_ctl_info structure * @size_pvt: size of private storage needed * @nr_csrows: Number of CWROWS needed for this MC * @nr_chans: Number of channels for the MC * * Everything is kmalloc'ed as one big chunk - more efficient. * Only can be used if all structures have the same lifetime - otherwise * you have to allocate and initialize your own structures. * * Use edac_mc_free() to free mc structures allocated by this function. * * Returns: * NULL allocation failed * struct mem_ctl_info pointer */ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows, unsigned nr_chans, int edac_index) { struct mem_ctl_info *mci; struct csrow_info *csi, *csrow; struct channel_info *chi, *chp, *chan; void *pvt; unsigned size; int row, chn; int err; /* Figure out the offsets of the various items from the start of an mc * structure. We want the alignment of each item to be at least as * stringent as what the compiler would provide if we could simply * hardcode everything into a single struct. */ mci = (struct mem_ctl_info *)0; csi = edac_align_ptr(&mci[1], sizeof(*csi)); chi = edac_align_ptr(&csi[nr_csrows], sizeof(*chi)); pvt = edac_align_ptr(&chi[nr_chans * nr_csrows], sz_pvt); size = ((unsigned long)pvt) + sz_pvt; mci = kzalloc(size, GFP_KERNEL); if (mci == NULL) return NULL; /* Adjust pointers so they point within the memory we just allocated * rather than an imaginary chunk of memory located at address 0. */ csi = (struct csrow_info *)(((char *)mci) + ((unsigned long)csi)); chi = (struct channel_info *)(((char *)mci) + ((unsigned long)chi)); pvt = sz_pvt ? (((char *)mci) + ((unsigned long)pvt)) : NULL; /* setup index and various internal pointers */ mci->mc_idx = edac_index; mci->csrows = csi; mci->pvt_info = pvt; mci->nr_csrows = nr_csrows; for (row = 0; row < nr_csrows; row++) { csrow = &csi[row]; csrow->csrow_idx = row; csrow->mci = mci; csrow->nr_channels = nr_chans; chp = &chi[row * nr_chans]; csrow->channels = chp; for (chn = 0; chn < nr_chans; chn++) { chan = &chp[chn]; chan->chan_idx = chn; chan->csrow = csrow; } } mci->op_state = OP_ALLOC; /* * Initialize the 'root' kobj for the edac_mc controller */ err = edac_mc_register_sysfs_main_kobj(mci); if (err) { kfree(mci); return NULL; } /* at this point, the root kobj is valid, and in order to * 'free' the object, then the function: * edac_mc_unregister_sysfs_main_kobj() must be called * which will perform kobj unregistration and the actual free * will occur during the kobject callback operation */ return mci; } EXPORT_SYMBOL_GPL(edac_mc_alloc); /** * edac_mc_free * 'Free' a previously allocated 'mci' structure * @mci: pointer to a struct mem_ctl_info structure */ void edac_mc_free(struct mem_ctl_info *mci) { edac_mc_unregister_sysfs_main_kobj(mci); } EXPORT_SYMBOL_GPL(edac_mc_free); /* * find_mci_by_dev * * scan list of controllers looking for the one that manages * the 'dev' device */ static struct mem_ctl_info *find_mci_by_dev(struct device *dev) { struct mem_ctl_info *mci; struct list_head *item; debugf3("%s()\n", __func__); list_for_each(item, &mc_devices) { mci = list_entry(item, struct mem_ctl_info, link); if (mci->dev == dev) return mci; } return NULL; } /* * handler for EDAC to check if NMI type handler has asserted interrupt */ static int edac_mc_assert_error_check_and_clear(void) { int old_state; if (edac_op_state == EDAC_OPSTATE_POLL) return 1; old_state = edac_err_assert; edac_err_assert = 0; return old_state; } /* * edac_mc_workq_function * performs the operation scheduled by a workq request */ static void edac_mc_workq_function(struct work_struct *work_req) { struct delayed_work *d_work = (struct delayed_work *)work_req; struct mem_ctl_info *mci = to_edac_mem_ctl_work(d_work); mutex_lock(&mem_ctls_mutex); /* if this control struct has movd to offline state, we are done */ if (mci->op_state == OP_OFFLINE) { mutex_unlock(&mem_ctls_mutex); return; } /* Only poll controllers that are running polled and have a check */ if (edac_mc_assert_error_check_and_clear() && (mci->edac_check != NULL)) mci->edac_check(mci); mutex_unlock(&mem_ctls_mutex); /* Reschedule */ queue_delayed_work(edac_workqueue, &mci->work, msecs_to_jiffies(edac_mc_get_poll_msec())); } /* * edac_mc_workq_setup * initialize a workq item for this mci * passing in the new delay period in msec * * locking model: * * called with the mem_ctls_mutex held */ static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec) { debugf0("%s()\n", __func__); /* if this instance is not in the POLL state, then simply return */ if (mci->op_state != OP_RUNNING_POLL) return; INIT_DELAYED_WORK(&mci->work, edac_mc_workq_function); queue_delayed_work(edac_workqueue, &mci->work, msecs_to_jiffies(msec)); } /* * edac_mc_workq_teardown * stop the workq processing on this mci * * locking model: * * called WITHOUT lock held */ static void edac_mc_workq_teardown(struct mem_ctl_info *mci) { int status; status = cancel_delayed_work(&mci->work); if (status == 0) { debugf0("%s() not canceled, flush the queue\n", __func__); /* workq instance might be running, wait for it */ flush_workqueue(edac_workqueue); } } /* * edac_mc_reset_delay_period(unsigned long value) * * user space has updated our poll period value, need to * reset our workq delays */ void edac_mc_reset_delay_period(int value) { struct mem_ctl_info *mci; struct list_head *item; mutex_lock(&mem_ctls_mutex); /* scan the list and turn off all workq timers, doing so under lock */ list_for_each(item, &mc_devices) { mci = list_entry(item, struct mem_ctl_info, link); if (mci->op_state == OP_RUNNING_POLL) cancel_delayed_work(&mci->work); } mutex_unlock(&mem_ctls_mutex); /* re-walk the list, and reset the poll delay */ mutex_lock(&mem_ctls_mutex); list_for_each(item, &mc_devices) { mci = list_entry(item, struct mem_ctl_info, link); edac_mc_workq_setup(mci, (unsigned long) value); } mutex_unlock(&mem_ctls_mutex); } /* Return 0 on success, 1 on failure. * Before calling this function, caller must * assign a unique value to mci->mc_idx. * * locking model: * * called with the mem_ctls_mutex lock held */ static int add_mc_to_global_list(struct mem_ctl_info *mci) { struct list_head *item, *insert_before; struct mem_ctl_info *p; insert_before = &mc_devices; p = find_mci_by_dev(mci->dev); if (unlikely(p != NULL)) goto fail0; list_for_each(item, &mc_devices) { p = list_entry(item, struct mem_ctl_info, link); if (p->mc_idx >= mci->mc_idx) { if (unlikely(p->mc_idx == mci->mc_idx)) goto fail1; insert_before = item; break; } } list_add_tail_rcu(&mci->link, insert_before); atomic_inc(&edac_handlers); return 0; fail0: edac_printk(KERN_WARNING, EDAC_MC, "%s (%s) %s %s already assigned %d\n", p->dev->bus_id, edac_dev_name(mci), 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) { struct mem_ctl_info *mci; mci = container_of(head, struct mem_ctl_info, rcu); INIT_LIST_HEAD(&mci->link); complete(&mci->complete); } static void del_mc_from_global_list(struct mem_ctl_info *mci) { atomic_dec(&edac_handlers); list_del_rcu(&mci->link); init_completion(&mci->complete); call_rcu(&mci->rcu, complete_mc_list_del); wait_for_completion(&mci->complete); } /** * edac_mc_find: Search for a mem_ctl_info structure whose index is 'idx'. * * If found, return a pointer to the structure. * Else return NULL. * * Caller must hold mem_ctls_mutex. */ struct mem_ctl_info *edac_mc_find(int idx) { struct list_head *item; struct mem_ctl_info *mci; list_for_each(item, &mc_devices) { mci = list_entry(item, struct mem_ctl_info, link); if (mci->mc_idx >= idx) { if (mci->mc_idx == idx) return mci; break; } } return NULL; } EXPORT_SYMBOL(edac_mc_find); /** * 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 * !0 Failure */ /* FIXME - should a warning be printed if no error detection? correction? */ int edac_mc_add_mc(struct mem_ctl_info *mci) { debugf0("%s()\n", __func__); #ifdef CONFIG_EDAC_DEBUG if (edac_debug_level >= 3) edac_mc_dump_mci(mci); if (edac_debug_level >= 4) { int i; for (i = 0; i < mci->nr_csrows; i++) { int j; edac_mc_dump_csrow(&mci->csrows[i]); for (j = 0; j < mci->csrows[i].nr_channels; j++) edac_mc_dump_channel(&mci->csrows[i]. channels[j]); } } #endif mutex_lock(&mem_ctls_mutex); if (add_mc_to_global_list(mci)) goto fail0; /* set load time so that error rate can be tracked */ mci->start_time = jiffies; if (edac_create_sysfs_mci_device(mci)) { edac_mc_printk(mci, KERN_WARNING, "failed to create sysfs device\n"); goto fail1; } /* If there IS a check routine, then we are running POLLED */ if (mci->edac_check != NULL) { /* This instance is NOW RUNNING */ mci->op_state = OP_RUNNING_POLL; edac_mc_workq_setup(mci, edac_mc_get_poll_msec()); } else { mci->op_state = OP_RUNNING_INTERRUPT; } /* Report action taken */ edac_mc_printk(mci, KERN_INFO, "Giving out device to '%s' '%s':" " DEV %s\n", mci->mod_name, mci->ctl_name, edac_dev_name(mci)); mutex_unlock(&mem_ctls_mutex); return 0; fail1: del_mc_from_global_list(mci); fail0: mutex_unlock(&mem_ctls_mutex); return 1; } 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 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 device *dev) { struct mem_ctl_info *mci; debugf0("%s()\n", __func__); mutex_lock(&mem_ctls_mutex); /* find the requested mci struct in the global list */ mci = find_mci_by_dev(dev); if (mci == NULL) { mutex_unlock(&mem_ctls_mutex); return NULL; } /* marking MCI offline */ mci->op_state = OP_OFFLINE; del_mc_from_global_list(mci); mutex_unlock(&mem_ctls_mutex); /* flush workq processes and remove sysfs */ edac_mc_workq_teardown(mci); edac_remove_sysfs_mci_device(mci); edac_printk(KERN_INFO, EDAC_MC, "Removed device %d for %s %s: DEV %s\n", mci->mc_idx, mci->mod_name, mci->ctl_name, edac_dev_name(mci)); return mci; } EXPORT_SYMBOL_GPL(edac_mc_del_mc); static void edac_mc_scrub_block(unsigned long page, unsigned long offset, u32 size) { struct page *pg; void *virt_addr; unsigned long flags = 0; debugf3("%s()\n", __func__); /* ECC error page was not in our memory. Ignore it. */ if (!pfn_valid(page)) return; /* Find the actual page structure then map it and fix */ pg = pfn_to_page(page); if (PageHighMem(pg)) local_irq_save(flags); virt_addr = kmap_atomic(pg, KM_BOUNCE_READ); /* Perform architecture specific atomic scrub operation */ atomic_scrub(virt_addr + offset, size); /* Unmap and complete */ kunmap_atomic(virt_addr, KM_BOUNCE_READ); if (PageHighMem(pg)) local_irq_restore(flags); } /* FIXME - should return -1 */ int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, unsigned long page) { struct csrow_info *csrows = mci->csrows; int row, i; debugf1("MC%d: %s(): 0x%lx\n", mci->mc_idx, __func__, page); row = -1; for (i = 0; i < mci->nr_csrows; i++) { struct csrow_info *csrow = &csrows[i]; if (csrow->nr_pages == 0) continue; debugf3("MC%d: %s(): first(0x%lx) page(0x%lx) last(0x%lx) " "mask(0x%lx)\n", mci->mc_idx, __func__, csrow->first_page, page, csrow->last_page, csrow->page_mask); if ((page >= csrow->first_page) && (page <= csrow->last_page) && ((page & csrow->page_mask) == (csrow->first_page & csrow->page_mask))) { row = i; break; } } if (row == -1) edac_mc_printk(mci, KERN_ERR, "could not look up page error address %lx\n", (unsigned long)page); return row; } EXPORT_SYMBOL_GPL(edac_mc_find_csrow_by_page); /* FIXME - setable log (warning/emerg) levels */ /* FIXME - integrate with evlog: http://evlog.sourceforge.net/ */ void edac_mc_handle_ce(struct mem_ctl_info *mci, unsigned long page_frame_number, unsigned long offset_in_page, unsigned long syndrome, int row, int channel, const char *msg) { unsigned long remapped_page; debugf3("MC%d: %s()\n", mci->mc_idx, __func__); /* FIXME - maybe make panic on INTERNAL ERROR an option */ if (row >= mci->nr_csrows || row < 0) { /* something is wrong */ edac_mc_printk(mci, KERN_ERR, "INTERNAL ERROR: row out of range " "(%d >= %d)\n", row, mci->nr_csrows); edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); return; } if (channel >= mci->csrows[row].nr_channels || channel < 0) { /* something is wrong */ edac_mc_printk(mci, KERN_ERR, "INTERNAL ERROR: channel out of range " "(%d >= %d)\n", channel, mci->csrows[row].nr_channels); edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); return; } if (edac_mc_get_log_ce()) /* FIXME - put in DIMM location */ edac_mc_printk(mci, KERN_WARNING, "CE page 0x%lx, offset 0x%lx, grain %d, syndrome " "0x%lx, row %d, channel %d, label \"%s\": %s\n", page_frame_number, offset_in_page, mci->csrows[row].grain, syndrome, row, channel, mci->csrows[row].channels[channel].label, msg); mci->ce_count++; mci->csrows[row].ce_count++; mci->csrows[row].channels[channel].ce_count++; if (mci->scrub_mode & SCRUB_SW_SRC) { /* * Some MC's can remap memory so that it is still available * at a different address when PCI devices map into memory. * MC's that can't do this lose the memory where PCI devices * are mapped. This mapping is MC dependant and so we call * back into the MC driver for it to map the MC page to * a physical (CPU) page which can then be mapped to a virtual * page - which can then be scrubbed. */ remapped_page = mci->ctl_page_to_phys ? mci->ctl_page_to_phys(mci, page_frame_number) : page_frame_number; edac_mc_scrub_block(remapped_page, offset_in_page, mci->csrows[row].grain); } } EXPORT_SYMBOL_GPL(edac_mc_handle_ce); void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, const char *msg) { if (edac_mc_get_log_ce()) edac_mc_printk(mci, KERN_WARNING, "CE - no information available: %s\n", msg); mci->ce_noinfo_count++; mci->ce_count++; } EXPORT_SYMBOL_GPL(edac_mc_handle_ce_no_info); void edac_mc_handle_ue(struct mem_ctl_info *mci, unsigned long page_frame_number, unsigned long offset_in_page, int row, const char *msg) { int len = EDAC_MC_LABEL_LEN * 4; char labels[len + 1]; char *pos = labels; int chan; int chars; debugf3("MC%d: %s()\n", mci->mc_idx, __func__); /* FIXME - maybe make panic on INTERNAL ERROR an option */ if (row >= mci->nr_csrows || row < 0) { /* something is wrong */ edac_mc_printk(mci, KERN_ERR, "INTERNAL ERROR: row out of range " "(%d >= %d)\n", row, mci->nr_csrows); edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR"); return; } chars = snprintf(pos, len + 1, "%s", mci->csrows[row].channels[0].label); len -= chars; pos += chars; for (chan = 1; (chan < mci->csrows[row].nr_channels) && (len > 0); chan++) { chars = snprintf(pos, len + 1, ":%s", mci->csrows[row].channels[chan].label); len -= chars; pos += chars; } if (edac_mc_get_log_ue()) edac_mc_printk(mci, KERN_EMERG, "UE page 0x%lx, offset 0x%lx, grain %d, row %d, " "labels \"%s\": %s\n", page_frame_number, offset_in_page, mci->csrows[row].grain, row, labels, msg); if (edac_mc_get_panic_on_ue()) panic("EDAC MC%d: UE page 0x%lx, offset 0x%lx, grain %d, " "row %d, labels \"%s\": %s\n", mci->mc_idx, page_frame_number, offset_in_page, mci->csrows[row].grain, row, labels, msg); mci->ue_count++; mci->csrows[row].ue_count++; } EXPORT_SYMBOL_GPL(edac_mc_handle_ue); void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, const char *msg) { if (edac_mc_get_panic_on_ue()) panic("EDAC MC%d: Uncorrected Error", mci->mc_idx); if (edac_mc_get_log_ue()) edac_mc_printk(mci, KERN_WARNING, "UE - no information available: %s\n", msg); mci->ue_noinfo_count++; mci->ue_count++; } EXPORT_SYMBOL_GPL(edac_mc_handle_ue_no_info); /************************************************************* * On Fully Buffered DIMM modules, this help function is * called to process UE events */ void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci, unsigned int csrow, unsigned int channela, unsigned int channelb, char *msg) { int len = EDAC_MC_LABEL_LEN * 4; char labels[len + 1]; char *pos = labels; int chars; if (csrow >= mci->nr_csrows) { /* something is wrong */ edac_mc_printk(mci, KERN_ERR, "INTERNAL ERROR: row out of range (%d >= %d)\n", csrow, mci->nr_csrows); edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR"); return; } if (channela >= mci->csrows[csrow].nr_channels) { /* something is wrong */ edac_mc_printk(mci, KERN_ERR, "INTERNAL ERROR: channel-a out of range " "(%d >= %d)\n", channela, mci->csrows[csrow].nr_channels); edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR"); return; } if (channelb >= mci->csrows[csrow].nr_channels) { /* something is wrong */ edac_mc_printk(mci, KERN_ERR, "INTERNAL ERROR: channel-b out of range " "(%d >= %d)\n", channelb, mci->csrows[csrow].nr_channels); edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR"); return; } mci->ue_count++; mci->csrows[csrow].ue_count++; /* Generate the DIMM labels from the specified channels */ chars = snprintf(pos, len + 1, "%s", mci->csrows[csrow].channels[channela].label); len -= chars; pos += chars; chars = snprintf(pos, len + 1, "-%s", mci->csrows[csrow].channels[channelb].label); if (edac_mc_get_log_ue()) edac_mc_printk(mci, KERN_EMERG, "UE row %d, channel-a= %d channel-b= %d " "labels \"%s\": %s\n", csrow, channela, channelb, labels, msg); if (edac_mc_get_panic_on_ue()) panic("UE row %d, channel-a= %d channel-b= %d " "labels \"%s\": %s\n", csrow, channela, channelb, labels, msg); } EXPORT_SYMBOL(edac_mc_handle_fbd_ue); /************************************************************* * On Fully Buffered DIMM modules, this help function is * called to process CE events */ void edac_mc_handle_fbd_ce(struct mem_ctl_info *mci, unsigned int csrow, unsigned int channel, char *msg) { /* Ensure boundary values */ if (csrow >= mci->nr_csrows) { /* something is wrong */ edac_mc_printk(mci, KERN_ERR, "INTERNAL ERROR: row out of range (%d >= %d)\n", csrow, mci->nr_csrows); edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); return; } if (channel >= mci->csrows[csrow].nr_channels) { /* something is wrong */ edac_mc_printk(mci, KERN_ERR, "INTERNAL ERROR: channel out of range (%d >= %d)\n", channel, mci->csrows[csrow].nr_channels); edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); return; } if (edac_mc_get_log_ce()) /* FIXME - put in DIMM location */ edac_mc_printk(mci, KERN_WARNING, "CE row %d, channel %d, label \"%s\": %s\n", csrow, channel, mci->csrows[csrow].channels[channel].label, msg); mci->ce_count++; mci->csrows[csrow].ce_count++; mci->csrows[csrow].channels[channel].ce_count++; } EXPORT_SYMBOL(edac_mc_handle_fbd_ce);