17c9281d7SDouglas Thompson /* 27c9281d7SDouglas Thompson * edac_mc kernel module 342a8e397SDouglas Thompson * (C) 2005-2007 Linux Networx (http://lnxi.com) 442a8e397SDouglas Thompson * 57c9281d7SDouglas Thompson * This file may be distributed under the terms of the 67c9281d7SDouglas Thompson * GNU General Public License. 77c9281d7SDouglas Thompson * 842a8e397SDouglas Thompson * Written Doug Thompson <norsk5@xmission.com> www.softwarebitmaker.com 97c9281d7SDouglas Thompson * 107a623c03SMauro Carvalho Chehab * (c) 2012 - Mauro Carvalho Chehab <mchehab@redhat.com> 117a623c03SMauro Carvalho Chehab * The entire API were re-written, and ported to use struct device 127a623c03SMauro Carvalho Chehab * 137c9281d7SDouglas Thompson */ 147c9281d7SDouglas Thompson 157c9281d7SDouglas Thompson #include <linux/ctype.h> 165a0e3ad6STejun Heo #include <linux/slab.h> 1730e1f7a8SBorislav Petkov #include <linux/edac.h> 188096cfafSDoug Thompson #include <linux/bug.h> 197a623c03SMauro Carvalho Chehab #include <linux/pm_runtime.h> 20452a6bf9SMauro Carvalho Chehab #include <linux/uaccess.h> 217c9281d7SDouglas Thompson 2220bcb7a8SDouglas Thompson #include "edac_core.h" 237c9281d7SDouglas Thompson #include "edac_module.h" 247c9281d7SDouglas Thompson 257c9281d7SDouglas Thompson /* MC EDAC Controls, setable by module parameter, and sysfs */ 264de78c68SDave Jiang static int edac_mc_log_ue = 1; 274de78c68SDave Jiang static int edac_mc_log_ce = 1; 28f044091cSDouglas Thompson static int edac_mc_panic_on_ue; 294de78c68SDave Jiang static int edac_mc_poll_msec = 1000; 307c9281d7SDouglas Thompson 317c9281d7SDouglas Thompson /* Getter functions for above */ 324de78c68SDave Jiang int edac_mc_get_log_ue(void) 337c9281d7SDouglas Thompson { 344de78c68SDave Jiang return edac_mc_log_ue; 357c9281d7SDouglas Thompson } 367c9281d7SDouglas Thompson 374de78c68SDave Jiang int edac_mc_get_log_ce(void) 387c9281d7SDouglas Thompson { 394de78c68SDave Jiang return edac_mc_log_ce; 407c9281d7SDouglas Thompson } 417c9281d7SDouglas Thompson 424de78c68SDave Jiang int edac_mc_get_panic_on_ue(void) 437c9281d7SDouglas Thompson { 444de78c68SDave Jiang return edac_mc_panic_on_ue; 457c9281d7SDouglas Thompson } 467c9281d7SDouglas Thompson 4781d87cb1SDave Jiang /* this is temporary */ 4881d87cb1SDave Jiang int edac_mc_get_poll_msec(void) 4981d87cb1SDave Jiang { 504de78c68SDave Jiang return edac_mc_poll_msec; 517c9281d7SDouglas Thompson } 527c9281d7SDouglas Thompson 53096846e2SArthur Jones static int edac_set_poll_msec(const char *val, struct kernel_param *kp) 54096846e2SArthur Jones { 55096846e2SArthur Jones long l; 56096846e2SArthur Jones int ret; 57096846e2SArthur Jones 58096846e2SArthur Jones if (!val) 59096846e2SArthur Jones return -EINVAL; 60096846e2SArthur Jones 61096846e2SArthur Jones ret = strict_strtol(val, 0, &l); 62096846e2SArthur Jones if (ret == -EINVAL || ((int)l != l)) 63096846e2SArthur Jones return -EINVAL; 64096846e2SArthur Jones *((int *)kp->arg) = l; 65096846e2SArthur Jones 66096846e2SArthur Jones /* notify edac_mc engine to reset the poll period */ 67096846e2SArthur Jones edac_mc_reset_delay_period(l); 68096846e2SArthur Jones 69096846e2SArthur Jones return 0; 70096846e2SArthur Jones } 71096846e2SArthur Jones 727c9281d7SDouglas Thompson /* Parameter declarations for above */ 734de78c68SDave Jiang module_param(edac_mc_panic_on_ue, int, 0644); 744de78c68SDave Jiang MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); 754de78c68SDave Jiang module_param(edac_mc_log_ue, int, 0644); 764de78c68SDave Jiang MODULE_PARM_DESC(edac_mc_log_ue, 774de78c68SDave Jiang "Log uncorrectable error to console: 0=off 1=on"); 784de78c68SDave Jiang module_param(edac_mc_log_ce, int, 0644); 794de78c68SDave Jiang MODULE_PARM_DESC(edac_mc_log_ce, 804de78c68SDave Jiang "Log correctable error to console: 0=off 1=on"); 81096846e2SArthur Jones module_param_call(edac_mc_poll_msec, edac_set_poll_msec, param_get_int, 82096846e2SArthur Jones &edac_mc_poll_msec, 0644); 834de78c68SDave Jiang MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds"); 847c9281d7SDouglas Thompson 85de3910ebSMauro Carvalho Chehab static struct device *mci_pdev; 867a623c03SMauro Carvalho Chehab 877c9281d7SDouglas Thompson /* 887c9281d7SDouglas Thompson * various constants for Memory Controllers 897c9281d7SDouglas Thompson */ 907c9281d7SDouglas Thompson static const char *mem_types[] = { 917c9281d7SDouglas Thompson [MEM_EMPTY] = "Empty", 927c9281d7SDouglas Thompson [MEM_RESERVED] = "Reserved", 937c9281d7SDouglas Thompson [MEM_UNKNOWN] = "Unknown", 947c9281d7SDouglas Thompson [MEM_FPM] = "FPM", 957c9281d7SDouglas Thompson [MEM_EDO] = "EDO", 967c9281d7SDouglas Thompson [MEM_BEDO] = "BEDO", 977c9281d7SDouglas Thompson [MEM_SDR] = "Unbuffered-SDR", 987c9281d7SDouglas Thompson [MEM_RDR] = "Registered-SDR", 997c9281d7SDouglas Thompson [MEM_DDR] = "Unbuffered-DDR", 1007c9281d7SDouglas Thompson [MEM_RDDR] = "Registered-DDR", 1011a9b85e6SDave Jiang [MEM_RMBS] = "RMBS", 1021a9b85e6SDave Jiang [MEM_DDR2] = "Unbuffered-DDR2", 1031a9b85e6SDave Jiang [MEM_FB_DDR2] = "FullyBuffered-DDR2", 1041d5f726cSBenjamin Herrenschmidt [MEM_RDDR2] = "Registered-DDR2", 105b1cfebc9SYang Shi [MEM_XDR] = "XDR", 106b1cfebc9SYang Shi [MEM_DDR3] = "Unbuffered-DDR3", 107b1cfebc9SYang Shi [MEM_RDDR3] = "Registered-DDR3" 1087c9281d7SDouglas Thompson }; 1097c9281d7SDouglas Thompson 1107c9281d7SDouglas Thompson static const char *dev_types[] = { 1117c9281d7SDouglas Thompson [DEV_UNKNOWN] = "Unknown", 1127c9281d7SDouglas Thompson [DEV_X1] = "x1", 1137c9281d7SDouglas Thompson [DEV_X2] = "x2", 1147c9281d7SDouglas Thompson [DEV_X4] = "x4", 1157c9281d7SDouglas Thompson [DEV_X8] = "x8", 1167c9281d7SDouglas Thompson [DEV_X16] = "x16", 1177c9281d7SDouglas Thompson [DEV_X32] = "x32", 1187c9281d7SDouglas Thompson [DEV_X64] = "x64" 1197c9281d7SDouglas Thompson }; 1207c9281d7SDouglas Thompson 1217c9281d7SDouglas Thompson static const char *edac_caps[] = { 1227c9281d7SDouglas Thompson [EDAC_UNKNOWN] = "Unknown", 1237c9281d7SDouglas Thompson [EDAC_NONE] = "None", 1247c9281d7SDouglas Thompson [EDAC_RESERVED] = "Reserved", 1257c9281d7SDouglas Thompson [EDAC_PARITY] = "PARITY", 1267c9281d7SDouglas Thompson [EDAC_EC] = "EC", 1277c9281d7SDouglas Thompson [EDAC_SECDED] = "SECDED", 1287c9281d7SDouglas Thompson [EDAC_S2ECD2ED] = "S2ECD2ED", 1297c9281d7SDouglas Thompson [EDAC_S4ECD4ED] = "S4ECD4ED", 1307c9281d7SDouglas Thompson [EDAC_S8ECD8ED] = "S8ECD8ED", 1317c9281d7SDouglas Thompson [EDAC_S16ECD16ED] = "S16ECD16ED" 1327c9281d7SDouglas Thompson }; 1337c9281d7SDouglas Thompson 13419974710SMauro Carvalho Chehab #ifdef CONFIG_EDAC_LEGACY_SYSFS 1357a623c03SMauro Carvalho Chehab /* 1367a623c03SMauro Carvalho Chehab * EDAC sysfs CSROW data structures and methods 1377c9281d7SDouglas Thompson */ 1387c9281d7SDouglas Thompson 1397a623c03SMauro Carvalho Chehab #define to_csrow(k) container_of(k, struct csrow_info, dev) 1407a623c03SMauro Carvalho Chehab 1417a623c03SMauro Carvalho Chehab /* 1427a623c03SMauro Carvalho Chehab * We need it to avoid namespace conflicts between the legacy API 1437a623c03SMauro Carvalho Chehab * and the per-dimm/per-rank one 1447a623c03SMauro Carvalho Chehab */ 1457a623c03SMauro Carvalho Chehab #define DEVICE_ATTR_LEGACY(_name, _mode, _show, _store) \ 1467a623c03SMauro Carvalho Chehab struct device_attribute dev_attr_legacy_##_name = __ATTR(_name, _mode, _show, _store) 1477a623c03SMauro Carvalho Chehab 1487a623c03SMauro Carvalho Chehab struct dev_ch_attribute { 1497a623c03SMauro Carvalho Chehab struct device_attribute attr; 1507a623c03SMauro Carvalho Chehab int channel; 1517a623c03SMauro Carvalho Chehab }; 1527a623c03SMauro Carvalho Chehab 1537a623c03SMauro Carvalho Chehab #define DEVICE_CHANNEL(_name, _mode, _show, _store, _var) \ 1547a623c03SMauro Carvalho Chehab struct dev_ch_attribute dev_attr_legacy_##_name = \ 1557a623c03SMauro Carvalho Chehab { __ATTR(_name, _mode, _show, _store), (_var) } 1567a623c03SMauro Carvalho Chehab 1577a623c03SMauro Carvalho Chehab #define to_channel(k) (container_of(k, struct dev_ch_attribute, attr)->channel) 1587a623c03SMauro Carvalho Chehab 1597c9281d7SDouglas Thompson /* Set of more default csrow<id> attribute show/store functions */ 1607a623c03SMauro Carvalho Chehab static ssize_t csrow_ue_count_show(struct device *dev, 1617a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 1627c9281d7SDouglas Thompson { 1637a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 1647a623c03SMauro Carvalho Chehab 1657c9281d7SDouglas Thompson return sprintf(data, "%u\n", csrow->ue_count); 1667c9281d7SDouglas Thompson } 1677c9281d7SDouglas Thompson 1687a623c03SMauro Carvalho Chehab static ssize_t csrow_ce_count_show(struct device *dev, 1697a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 1707c9281d7SDouglas Thompson { 1717a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 1727a623c03SMauro Carvalho Chehab 1737c9281d7SDouglas Thompson return sprintf(data, "%u\n", csrow->ce_count); 1747c9281d7SDouglas Thompson } 1757c9281d7SDouglas Thompson 1767a623c03SMauro Carvalho Chehab static ssize_t csrow_size_show(struct device *dev, 1777a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 1787c9281d7SDouglas Thompson { 1797a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 180a895bf8bSMauro Carvalho Chehab int i; 181a895bf8bSMauro Carvalho Chehab u32 nr_pages = 0; 182a895bf8bSMauro Carvalho Chehab 183a895bf8bSMauro Carvalho Chehab for (i = 0; i < csrow->nr_channels; i++) 184de3910ebSMauro Carvalho Chehab nr_pages += csrow->channels[i]->dimm->nr_pages; 185a895bf8bSMauro Carvalho Chehab return sprintf(data, "%u\n", PAGES_TO_MiB(nr_pages)); 1867c9281d7SDouglas Thompson } 1877c9281d7SDouglas Thompson 1887a623c03SMauro Carvalho Chehab static ssize_t csrow_mem_type_show(struct device *dev, 1897a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 1907c9281d7SDouglas Thompson { 1917a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 1927a623c03SMauro Carvalho Chehab 193de3910ebSMauro Carvalho Chehab return sprintf(data, "%s\n", mem_types[csrow->channels[0]->dimm->mtype]); 1947c9281d7SDouglas Thompson } 1957c9281d7SDouglas Thompson 1967a623c03SMauro Carvalho Chehab static ssize_t csrow_dev_type_show(struct device *dev, 1977a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 1987c9281d7SDouglas Thompson { 1997a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 2007a623c03SMauro Carvalho Chehab 201de3910ebSMauro Carvalho Chehab return sprintf(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]); 2027c9281d7SDouglas Thompson } 2037c9281d7SDouglas Thompson 2047a623c03SMauro Carvalho Chehab static ssize_t csrow_edac_mode_show(struct device *dev, 2057a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 2067a623c03SMauro Carvalho Chehab char *data) 2077c9281d7SDouglas Thompson { 2087a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 2097a623c03SMauro Carvalho Chehab 210de3910ebSMauro Carvalho Chehab return sprintf(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]); 2117c9281d7SDouglas Thompson } 2127c9281d7SDouglas Thompson 2137c9281d7SDouglas Thompson /* show/store functions for DIMM Label attributes */ 2147a623c03SMauro Carvalho Chehab static ssize_t channel_dimm_label_show(struct device *dev, 2157a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 2167a623c03SMauro Carvalho Chehab char *data) 2177c9281d7SDouglas Thompson { 2187a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 2197a623c03SMauro Carvalho Chehab unsigned chan = to_channel(mattr); 220de3910ebSMauro Carvalho Chehab struct rank_info *rank = csrow->channels[chan]; 2217a623c03SMauro Carvalho Chehab 222124682c7SArthur Jones /* if field has not been initialized, there is nothing to send */ 2237a623c03SMauro Carvalho Chehab if (!rank->dimm->label[0]) 224124682c7SArthur Jones return 0; 225124682c7SArthur Jones 226124682c7SArthur Jones return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", 2277a623c03SMauro Carvalho Chehab rank->dimm->label); 2287c9281d7SDouglas Thompson } 2297c9281d7SDouglas Thompson 2307a623c03SMauro Carvalho Chehab static ssize_t channel_dimm_label_store(struct device *dev, 2317a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 2327a623c03SMauro Carvalho Chehab const char *data, size_t count) 2337c9281d7SDouglas Thompson { 2347a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 2357a623c03SMauro Carvalho Chehab unsigned chan = to_channel(mattr); 236de3910ebSMauro Carvalho Chehab struct rank_info *rank = csrow->channels[chan]; 2377a623c03SMauro Carvalho Chehab 2387c9281d7SDouglas Thompson ssize_t max_size = 0; 2397c9281d7SDouglas Thompson 2407c9281d7SDouglas Thompson max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1); 2417a623c03SMauro Carvalho Chehab strncpy(rank->dimm->label, data, max_size); 2427a623c03SMauro Carvalho Chehab rank->dimm->label[max_size] = '\0'; 2437c9281d7SDouglas Thompson 2447c9281d7SDouglas Thompson return max_size; 2457c9281d7SDouglas Thompson } 2467c9281d7SDouglas Thompson 2477c9281d7SDouglas Thompson /* show function for dynamic chX_ce_count attribute */ 2487a623c03SMauro Carvalho Chehab static ssize_t channel_ce_count_show(struct device *dev, 2497a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 2507c9281d7SDouglas Thompson { 2517a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 2527a623c03SMauro Carvalho Chehab unsigned chan = to_channel(mattr); 253de3910ebSMauro Carvalho Chehab struct rank_info *rank = csrow->channels[chan]; 2547a623c03SMauro Carvalho Chehab 2557a623c03SMauro Carvalho Chehab return sprintf(data, "%u\n", rank->ce_count); 2567c9281d7SDouglas Thompson } 2577c9281d7SDouglas Thompson 2587a623c03SMauro Carvalho Chehab /* cwrow<id>/attribute files */ 2597a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(size_mb, S_IRUGO, csrow_size_show, NULL); 2607a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(dev_type, S_IRUGO, csrow_dev_type_show, NULL); 2617a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(mem_type, S_IRUGO, csrow_mem_type_show, NULL); 2627a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL); 2637a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(ue_count, S_IRUGO, csrow_ue_count_show, NULL); 2647a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(ce_count, S_IRUGO, csrow_ce_count_show, NULL); 2657c9281d7SDouglas Thompson 2667c9281d7SDouglas Thompson /* default attributes of the CSROW<id> object */ 2677a623c03SMauro Carvalho Chehab static struct attribute *csrow_attrs[] = { 2687a623c03SMauro Carvalho Chehab &dev_attr_legacy_dev_type.attr, 2697a623c03SMauro Carvalho Chehab &dev_attr_legacy_mem_type.attr, 2707a623c03SMauro Carvalho Chehab &dev_attr_legacy_edac_mode.attr, 2717a623c03SMauro Carvalho Chehab &dev_attr_legacy_size_mb.attr, 2727a623c03SMauro Carvalho Chehab &dev_attr_legacy_ue_count.attr, 2737a623c03SMauro Carvalho Chehab &dev_attr_legacy_ce_count.attr, 2747c9281d7SDouglas Thompson NULL, 2757c9281d7SDouglas Thompson }; 2767c9281d7SDouglas Thompson 2777a623c03SMauro Carvalho Chehab static struct attribute_group csrow_attr_grp = { 2787a623c03SMauro Carvalho Chehab .attrs = csrow_attrs, 2797c9281d7SDouglas Thompson }; 2807c9281d7SDouglas Thompson 2817a623c03SMauro Carvalho Chehab static const struct attribute_group *csrow_attr_groups[] = { 2827a623c03SMauro Carvalho Chehab &csrow_attr_grp, 2837a623c03SMauro Carvalho Chehab NULL 2847c9281d7SDouglas Thompson }; 2857c9281d7SDouglas Thompson 286de3910ebSMauro Carvalho Chehab static void csrow_attr_release(struct device *dev) 2877a623c03SMauro Carvalho Chehab { 288de3910ebSMauro Carvalho Chehab struct csrow_info *csrow = container_of(dev, struct csrow_info, dev); 289de3910ebSMauro Carvalho Chehab 290956b9ba1SJoe Perches edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev)); 291de3910ebSMauro Carvalho Chehab kfree(csrow); 2927a623c03SMauro Carvalho Chehab } 2937a623c03SMauro Carvalho Chehab 2947a623c03SMauro Carvalho Chehab static struct device_type csrow_attr_type = { 2957a623c03SMauro Carvalho Chehab .groups = csrow_attr_groups, 2967a623c03SMauro Carvalho Chehab .release = csrow_attr_release, 2977a623c03SMauro Carvalho Chehab }; 2987a623c03SMauro Carvalho Chehab 2997a623c03SMauro Carvalho Chehab /* 3007a623c03SMauro Carvalho Chehab * possible dynamic channel DIMM Label attribute files 3017a623c03SMauro Carvalho Chehab * 3027a623c03SMauro Carvalho Chehab */ 3037a623c03SMauro Carvalho Chehab 3047c9281d7SDouglas Thompson #define EDAC_NR_CHANNELS 6 3057c9281d7SDouglas Thompson 3067a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch0_dimm_label, S_IRUGO | S_IWUSR, 3077a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 0); 3087a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch1_dimm_label, S_IRUGO | S_IWUSR, 3097a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 1); 3107a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch2_dimm_label, S_IRUGO | S_IWUSR, 3117a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 2); 3127a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch3_dimm_label, S_IRUGO | S_IWUSR, 3137a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 3); 3147a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch4_dimm_label, S_IRUGO | S_IWUSR, 3157a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 4); 3167a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch5_dimm_label, S_IRUGO | S_IWUSR, 3177a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 5); 3187c9281d7SDouglas Thompson 3197a623c03SMauro Carvalho Chehab /* Total possible dynamic DIMM Label attribute file table */ 3207a623c03SMauro Carvalho Chehab static struct device_attribute *dynamic_csrow_dimm_attr[] = { 3217a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch0_dimm_label.attr, 3227a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch1_dimm_label.attr, 3237a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch2_dimm_label.attr, 3247a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch3_dimm_label.attr, 3257a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch4_dimm_label.attr, 3267a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch5_dimm_label.attr 3277a623c03SMauro Carvalho Chehab }; 3287c9281d7SDouglas Thompson 3297a623c03SMauro Carvalho Chehab /* possible dynamic channel ce_count attribute files */ 3307a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch0_ce_count, S_IRUGO | S_IWUSR, 3317a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 0); 3327a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch1_ce_count, S_IRUGO | S_IWUSR, 3337a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 1); 3347a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch2_ce_count, S_IRUGO | S_IWUSR, 3357a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 2); 3367a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch3_ce_count, S_IRUGO | S_IWUSR, 3377a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 3); 3387a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch4_ce_count, S_IRUGO | S_IWUSR, 3397a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 4); 3407a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch5_ce_count, S_IRUGO | S_IWUSR, 3417a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 5); 3427c9281d7SDouglas Thompson 3437a623c03SMauro Carvalho Chehab /* Total possible dynamic ce_count attribute file table */ 3447a623c03SMauro Carvalho Chehab static struct device_attribute *dynamic_csrow_ce_count_attr[] = { 3457a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch0_ce_count.attr, 3467a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch1_ce_count.attr, 3477a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch2_ce_count.attr, 3487a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch3_ce_count.attr, 3497a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch4_ce_count.attr, 3507a623c03SMauro Carvalho Chehab &dev_attr_legacy_ch5_ce_count.attr 3517c9281d7SDouglas Thompson }; 3527c9281d7SDouglas Thompson 353e39f4ea9SMauro Carvalho Chehab static inline int nr_pages_per_csrow(struct csrow_info *csrow) 354e39f4ea9SMauro Carvalho Chehab { 355e39f4ea9SMauro Carvalho Chehab int chan, nr_pages = 0; 356e39f4ea9SMauro Carvalho Chehab 357e39f4ea9SMauro Carvalho Chehab for (chan = 0; chan < csrow->nr_channels; chan++) 358de3910ebSMauro Carvalho Chehab nr_pages += csrow->channels[chan]->dimm->nr_pages; 359e39f4ea9SMauro Carvalho Chehab 360e39f4ea9SMauro Carvalho Chehab return nr_pages; 361e39f4ea9SMauro Carvalho Chehab } 362e39f4ea9SMauro Carvalho Chehab 3637c9281d7SDouglas Thompson /* Create a CSROW object under specifed edac_mc_device */ 3648096cfafSDoug Thompson static int edac_create_csrow_object(struct mem_ctl_info *mci, 365079708b9SDouglas Thompson struct csrow_info *csrow, int index) 3667c9281d7SDouglas Thompson { 3677a623c03SMauro Carvalho Chehab int err, chan; 3687c9281d7SDouglas Thompson 3697a623c03SMauro Carvalho Chehab if (csrow->nr_channels >= EDAC_NR_CHANNELS) 3707a623c03SMauro Carvalho Chehab return -ENODEV; 3718096cfafSDoug Thompson 3727a623c03SMauro Carvalho Chehab csrow->dev.type = &csrow_attr_type; 3737a623c03SMauro Carvalho Chehab csrow->dev.bus = &mci->bus; 3747a623c03SMauro Carvalho Chehab device_initialize(&csrow->dev); 3757a623c03SMauro Carvalho Chehab csrow->dev.parent = &mci->dev; 3767a623c03SMauro Carvalho Chehab dev_set_name(&csrow->dev, "csrow%d", index); 3777a623c03SMauro Carvalho Chehab dev_set_drvdata(&csrow->dev, csrow); 3787c9281d7SDouglas Thompson 379956b9ba1SJoe Perches edac_dbg(0, "creating (virtual) csrow node %s\n", 380956b9ba1SJoe Perches dev_name(&csrow->dev)); 3818096cfafSDoug Thompson 3827a623c03SMauro Carvalho Chehab err = device_add(&csrow->dev); 3837a623c03SMauro Carvalho Chehab if (err < 0) 3847a623c03SMauro Carvalho Chehab return err; 3858096cfafSDoug Thompson 3867c9281d7SDouglas Thompson for (chan = 0; chan < csrow->nr_channels; chan++) { 387e39f4ea9SMauro Carvalho Chehab /* Only expose populated DIMMs */ 388de3910ebSMauro Carvalho Chehab if (!csrow->channels[chan]->dimm->nr_pages) 389e39f4ea9SMauro Carvalho Chehab continue; 3907a623c03SMauro Carvalho Chehab err = device_create_file(&csrow->dev, 3917a623c03SMauro Carvalho Chehab dynamic_csrow_dimm_attr[chan]); 3927a623c03SMauro Carvalho Chehab if (err < 0) 3937a623c03SMauro Carvalho Chehab goto error; 3947a623c03SMauro Carvalho Chehab err = device_create_file(&csrow->dev, 3957a623c03SMauro Carvalho Chehab dynamic_csrow_ce_count_attr[chan]); 3967a623c03SMauro Carvalho Chehab if (err < 0) { 3977a623c03SMauro Carvalho Chehab device_remove_file(&csrow->dev, 3987a623c03SMauro Carvalho Chehab dynamic_csrow_dimm_attr[chan]); 3997a623c03SMauro Carvalho Chehab goto error; 4007c9281d7SDouglas Thompson } 4017c9281d7SDouglas Thompson } 4027a623c03SMauro Carvalho Chehab 4038096cfafSDoug Thompson return 0; 4048096cfafSDoug Thompson 4057a623c03SMauro Carvalho Chehab error: 4067a623c03SMauro Carvalho Chehab for (--chan; chan >= 0; chan--) { 4077a623c03SMauro Carvalho Chehab device_remove_file(&csrow->dev, 4087a623c03SMauro Carvalho Chehab dynamic_csrow_dimm_attr[chan]); 4097a623c03SMauro Carvalho Chehab device_remove_file(&csrow->dev, 4107a623c03SMauro Carvalho Chehab dynamic_csrow_ce_count_attr[chan]); 4117a623c03SMauro Carvalho Chehab } 4127a623c03SMauro Carvalho Chehab put_device(&csrow->dev); 4138096cfafSDoug Thompson 4147c9281d7SDouglas Thompson return err; 4157c9281d7SDouglas Thompson } 4167c9281d7SDouglas Thompson 4177a623c03SMauro Carvalho Chehab /* Create a CSROW object under specifed edac_mc_device */ 4187a623c03SMauro Carvalho Chehab static int edac_create_csrow_objects(struct mem_ctl_info *mci) 4197a623c03SMauro Carvalho Chehab { 4207a623c03SMauro Carvalho Chehab int err, i, chan; 4217a623c03SMauro Carvalho Chehab struct csrow_info *csrow; 4227c9281d7SDouglas Thompson 4237a623c03SMauro Carvalho Chehab for (i = 0; i < mci->nr_csrows; i++) { 424de3910ebSMauro Carvalho Chehab csrow = mci->csrows[i]; 425e39f4ea9SMauro Carvalho Chehab if (!nr_pages_per_csrow(csrow)) 426e39f4ea9SMauro Carvalho Chehab continue; 427de3910ebSMauro Carvalho Chehab err = edac_create_csrow_object(mci, mci->csrows[i], i); 4287a623c03SMauro Carvalho Chehab if (err < 0) 4297a623c03SMauro Carvalho Chehab goto error; 4307a623c03SMauro Carvalho Chehab } 4317a623c03SMauro Carvalho Chehab return 0; 4327a623c03SMauro Carvalho Chehab 4337a623c03SMauro Carvalho Chehab error: 4347a623c03SMauro Carvalho Chehab for (--i; i >= 0; i--) { 435de3910ebSMauro Carvalho Chehab csrow = mci->csrows[i]; 436e39f4ea9SMauro Carvalho Chehab if (!nr_pages_per_csrow(csrow)) 437e39f4ea9SMauro Carvalho Chehab continue; 4387a623c03SMauro Carvalho Chehab for (chan = csrow->nr_channels - 1; chan >= 0; chan--) { 439de3910ebSMauro Carvalho Chehab if (!csrow->channels[chan]->dimm->nr_pages) 440e39f4ea9SMauro Carvalho Chehab continue; 4417a623c03SMauro Carvalho Chehab device_remove_file(&csrow->dev, 4427a623c03SMauro Carvalho Chehab dynamic_csrow_dimm_attr[chan]); 4437a623c03SMauro Carvalho Chehab device_remove_file(&csrow->dev, 4447a623c03SMauro Carvalho Chehab dynamic_csrow_ce_count_attr[chan]); 4457a623c03SMauro Carvalho Chehab } 446de3910ebSMauro Carvalho Chehab put_device(&mci->csrows[i]->dev); 4477a623c03SMauro Carvalho Chehab } 4487a623c03SMauro Carvalho Chehab 4497a623c03SMauro Carvalho Chehab return err; 4507a623c03SMauro Carvalho Chehab } 4517a623c03SMauro Carvalho Chehab 4527a623c03SMauro Carvalho Chehab static void edac_delete_csrow_objects(struct mem_ctl_info *mci) 4537a623c03SMauro Carvalho Chehab { 4547a623c03SMauro Carvalho Chehab int i, chan; 4557a623c03SMauro Carvalho Chehab struct csrow_info *csrow; 4567a623c03SMauro Carvalho Chehab 4577a623c03SMauro Carvalho Chehab for (i = mci->nr_csrows - 1; i >= 0; i--) { 458de3910ebSMauro Carvalho Chehab csrow = mci->csrows[i]; 459e39f4ea9SMauro Carvalho Chehab if (!nr_pages_per_csrow(csrow)) 460e39f4ea9SMauro Carvalho Chehab continue; 4617a623c03SMauro Carvalho Chehab for (chan = csrow->nr_channels - 1; chan >= 0; chan--) { 462de3910ebSMauro Carvalho Chehab if (!csrow->channels[chan]->dimm->nr_pages) 463e39f4ea9SMauro Carvalho Chehab continue; 464956b9ba1SJoe Perches edac_dbg(1, "Removing csrow %d channel %d sysfs nodes\n", 4657a623c03SMauro Carvalho Chehab i, chan); 4667a623c03SMauro Carvalho Chehab device_remove_file(&csrow->dev, 4677a623c03SMauro Carvalho Chehab dynamic_csrow_dimm_attr[chan]); 4687a623c03SMauro Carvalho Chehab device_remove_file(&csrow->dev, 4697a623c03SMauro Carvalho Chehab dynamic_csrow_ce_count_attr[chan]); 4707a623c03SMauro Carvalho Chehab } 471de3910ebSMauro Carvalho Chehab put_device(&mci->csrows[i]->dev); 472de3910ebSMauro Carvalho Chehab device_del(&mci->csrows[i]->dev); 4737a623c03SMauro Carvalho Chehab } 4747a623c03SMauro Carvalho Chehab } 47519974710SMauro Carvalho Chehab #endif 47619974710SMauro Carvalho Chehab 47719974710SMauro Carvalho Chehab /* 47819974710SMauro Carvalho Chehab * Per-dimm (or per-rank) devices 47919974710SMauro Carvalho Chehab */ 48019974710SMauro Carvalho Chehab 48119974710SMauro Carvalho Chehab #define to_dimm(k) container_of(k, struct dimm_info, dev) 48219974710SMauro Carvalho Chehab 48319974710SMauro Carvalho Chehab /* show/store functions for DIMM Label attributes */ 48419974710SMauro Carvalho Chehab static ssize_t dimmdev_location_show(struct device *dev, 48519974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 48619974710SMauro Carvalho Chehab { 48719974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 48819974710SMauro Carvalho Chehab 4896e84d359SMauro Carvalho Chehab return edac_dimm_info_location(dimm, data, PAGE_SIZE); 49019974710SMauro Carvalho Chehab } 49119974710SMauro Carvalho Chehab 49219974710SMauro Carvalho Chehab static ssize_t dimmdev_label_show(struct device *dev, 49319974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 49419974710SMauro Carvalho Chehab { 49519974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 49619974710SMauro Carvalho Chehab 49719974710SMauro Carvalho Chehab /* if field has not been initialized, there is nothing to send */ 49819974710SMauro Carvalho Chehab if (!dimm->label[0]) 49919974710SMauro Carvalho Chehab return 0; 50019974710SMauro Carvalho Chehab 50119974710SMauro Carvalho Chehab return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", dimm->label); 50219974710SMauro Carvalho Chehab } 50319974710SMauro Carvalho Chehab 50419974710SMauro Carvalho Chehab static ssize_t dimmdev_label_store(struct device *dev, 50519974710SMauro Carvalho Chehab struct device_attribute *mattr, 50619974710SMauro Carvalho Chehab const char *data, 50719974710SMauro Carvalho Chehab size_t count) 50819974710SMauro Carvalho Chehab { 50919974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 51019974710SMauro Carvalho Chehab 51119974710SMauro Carvalho Chehab ssize_t max_size = 0; 51219974710SMauro Carvalho Chehab 51319974710SMauro Carvalho Chehab max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1); 51419974710SMauro Carvalho Chehab strncpy(dimm->label, data, max_size); 51519974710SMauro Carvalho Chehab dimm->label[max_size] = '\0'; 51619974710SMauro Carvalho Chehab 51719974710SMauro Carvalho Chehab return max_size; 51819974710SMauro Carvalho Chehab } 51919974710SMauro Carvalho Chehab 52019974710SMauro Carvalho Chehab static ssize_t dimmdev_size_show(struct device *dev, 52119974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 52219974710SMauro Carvalho Chehab { 52319974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 52419974710SMauro Carvalho Chehab 52519974710SMauro Carvalho Chehab return sprintf(data, "%u\n", PAGES_TO_MiB(dimm->nr_pages)); 52619974710SMauro Carvalho Chehab } 52719974710SMauro Carvalho Chehab 52819974710SMauro Carvalho Chehab static ssize_t dimmdev_mem_type_show(struct device *dev, 52919974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 53019974710SMauro Carvalho Chehab { 53119974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 53219974710SMauro Carvalho Chehab 53319974710SMauro Carvalho Chehab return sprintf(data, "%s\n", mem_types[dimm->mtype]); 53419974710SMauro Carvalho Chehab } 53519974710SMauro Carvalho Chehab 53619974710SMauro Carvalho Chehab static ssize_t dimmdev_dev_type_show(struct device *dev, 53719974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 53819974710SMauro Carvalho Chehab { 53919974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 54019974710SMauro Carvalho Chehab 54119974710SMauro Carvalho Chehab return sprintf(data, "%s\n", dev_types[dimm->dtype]); 54219974710SMauro Carvalho Chehab } 54319974710SMauro Carvalho Chehab 54419974710SMauro Carvalho Chehab static ssize_t dimmdev_edac_mode_show(struct device *dev, 54519974710SMauro Carvalho Chehab struct device_attribute *mattr, 54619974710SMauro Carvalho Chehab char *data) 54719974710SMauro Carvalho Chehab { 54819974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 54919974710SMauro Carvalho Chehab 55019974710SMauro Carvalho Chehab return sprintf(data, "%s\n", edac_caps[dimm->edac_mode]); 55119974710SMauro Carvalho Chehab } 55219974710SMauro Carvalho Chehab 55319974710SMauro Carvalho Chehab /* dimm/rank attribute files */ 55419974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_label, S_IRUGO | S_IWUSR, 55519974710SMauro Carvalho Chehab dimmdev_label_show, dimmdev_label_store); 55619974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_location, S_IRUGO, dimmdev_location_show, NULL); 55719974710SMauro Carvalho Chehab static DEVICE_ATTR(size, S_IRUGO, dimmdev_size_show, NULL); 55819974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_mem_type, S_IRUGO, dimmdev_mem_type_show, NULL); 55919974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_dev_type, S_IRUGO, dimmdev_dev_type_show, NULL); 56019974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_edac_mode, S_IRUGO, dimmdev_edac_mode_show, NULL); 56119974710SMauro Carvalho Chehab 56219974710SMauro Carvalho Chehab /* attributes of the dimm<id>/rank<id> object */ 56319974710SMauro Carvalho Chehab static struct attribute *dimm_attrs[] = { 56419974710SMauro Carvalho Chehab &dev_attr_dimm_label.attr, 56519974710SMauro Carvalho Chehab &dev_attr_dimm_location.attr, 56619974710SMauro Carvalho Chehab &dev_attr_size.attr, 56719974710SMauro Carvalho Chehab &dev_attr_dimm_mem_type.attr, 56819974710SMauro Carvalho Chehab &dev_attr_dimm_dev_type.attr, 56919974710SMauro Carvalho Chehab &dev_attr_dimm_edac_mode.attr, 57019974710SMauro Carvalho Chehab NULL, 57119974710SMauro Carvalho Chehab }; 57219974710SMauro Carvalho Chehab 57319974710SMauro Carvalho Chehab static struct attribute_group dimm_attr_grp = { 57419974710SMauro Carvalho Chehab .attrs = dimm_attrs, 57519974710SMauro Carvalho Chehab }; 57619974710SMauro Carvalho Chehab 57719974710SMauro Carvalho Chehab static const struct attribute_group *dimm_attr_groups[] = { 57819974710SMauro Carvalho Chehab &dimm_attr_grp, 57919974710SMauro Carvalho Chehab NULL 58019974710SMauro Carvalho Chehab }; 58119974710SMauro Carvalho Chehab 582de3910ebSMauro Carvalho Chehab static void dimm_attr_release(struct device *dev) 58319974710SMauro Carvalho Chehab { 584de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = container_of(dev, struct dimm_info, dev); 585de3910ebSMauro Carvalho Chehab 586956b9ba1SJoe Perches edac_dbg(1, "Releasing dimm device %s\n", dev_name(dev)); 587de3910ebSMauro Carvalho Chehab kfree(dimm); 58819974710SMauro Carvalho Chehab } 58919974710SMauro Carvalho Chehab 59019974710SMauro Carvalho Chehab static struct device_type dimm_attr_type = { 59119974710SMauro Carvalho Chehab .groups = dimm_attr_groups, 59219974710SMauro Carvalho Chehab .release = dimm_attr_release, 59319974710SMauro Carvalho Chehab }; 59419974710SMauro Carvalho Chehab 59519974710SMauro Carvalho Chehab /* Create a DIMM object under specifed memory controller device */ 59619974710SMauro Carvalho Chehab static int edac_create_dimm_object(struct mem_ctl_info *mci, 59719974710SMauro Carvalho Chehab struct dimm_info *dimm, 59819974710SMauro Carvalho Chehab int index) 59919974710SMauro Carvalho Chehab { 60019974710SMauro Carvalho Chehab int err; 60119974710SMauro Carvalho Chehab dimm->mci = mci; 60219974710SMauro Carvalho Chehab 60319974710SMauro Carvalho Chehab dimm->dev.type = &dimm_attr_type; 60419974710SMauro Carvalho Chehab dimm->dev.bus = &mci->bus; 60519974710SMauro Carvalho Chehab device_initialize(&dimm->dev); 60619974710SMauro Carvalho Chehab 60719974710SMauro Carvalho Chehab dimm->dev.parent = &mci->dev; 60819974710SMauro Carvalho Chehab if (mci->mem_is_per_rank) 60919974710SMauro Carvalho Chehab dev_set_name(&dimm->dev, "rank%d", index); 61019974710SMauro Carvalho Chehab else 61119974710SMauro Carvalho Chehab dev_set_name(&dimm->dev, "dimm%d", index); 61219974710SMauro Carvalho Chehab dev_set_drvdata(&dimm->dev, dimm); 61319974710SMauro Carvalho Chehab pm_runtime_forbid(&mci->dev); 61419974710SMauro Carvalho Chehab 61519974710SMauro Carvalho Chehab err = device_add(&dimm->dev); 61619974710SMauro Carvalho Chehab 617956b9ba1SJoe Perches edac_dbg(0, "creating rank/dimm device %s\n", dev_name(&dimm->dev)); 61819974710SMauro Carvalho Chehab 61919974710SMauro Carvalho Chehab return err; 62019974710SMauro Carvalho Chehab } 6217a623c03SMauro Carvalho Chehab 6227a623c03SMauro Carvalho Chehab /* 6237a623c03SMauro Carvalho Chehab * Memory controller device 6247a623c03SMauro Carvalho Chehab */ 6257a623c03SMauro Carvalho Chehab 6267a623c03SMauro Carvalho Chehab #define to_mci(k) container_of(k, struct mem_ctl_info, dev) 6277a623c03SMauro Carvalho Chehab 6287a623c03SMauro Carvalho Chehab static ssize_t mci_reset_counters_store(struct device *dev, 6297a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 6307c9281d7SDouglas Thompson const char *data, size_t count) 6317c9281d7SDouglas Thompson { 6327a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 6337a623c03SMauro Carvalho Chehab int cnt, row, chan, i; 6345926ff50SMauro Carvalho Chehab mci->ue_mc = 0; 6355926ff50SMauro Carvalho Chehab mci->ce_mc = 0; 6367a623c03SMauro Carvalho Chehab mci->ue_noinfo_count = 0; 6377a623c03SMauro Carvalho Chehab mci->ce_noinfo_count = 0; 6387c9281d7SDouglas Thompson 6397c9281d7SDouglas Thompson for (row = 0; row < mci->nr_csrows; row++) { 640de3910ebSMauro Carvalho Chehab struct csrow_info *ri = mci->csrows[row]; 6417c9281d7SDouglas Thompson 6427c9281d7SDouglas Thompson ri->ue_count = 0; 6437c9281d7SDouglas Thompson ri->ce_count = 0; 6447c9281d7SDouglas Thompson 6457c9281d7SDouglas Thompson for (chan = 0; chan < ri->nr_channels; chan++) 646de3910ebSMauro Carvalho Chehab ri->channels[chan]->ce_count = 0; 6477c9281d7SDouglas Thompson } 6487c9281d7SDouglas Thompson 6497a623c03SMauro Carvalho Chehab cnt = 1; 6507a623c03SMauro Carvalho Chehab for (i = 0; i < mci->n_layers; i++) { 6517a623c03SMauro Carvalho Chehab cnt *= mci->layers[i].size; 6527a623c03SMauro Carvalho Chehab memset(mci->ce_per_layer[i], 0, cnt * sizeof(u32)); 6537a623c03SMauro Carvalho Chehab memset(mci->ue_per_layer[i], 0, cnt * sizeof(u32)); 6547a623c03SMauro Carvalho Chehab } 6557a623c03SMauro Carvalho Chehab 6567c9281d7SDouglas Thompson mci->start_time = jiffies; 6577c9281d7SDouglas Thompson return count; 6587c9281d7SDouglas Thompson } 6597c9281d7SDouglas Thompson 66039094443SBorislav Petkov /* Memory scrubbing interface: 66139094443SBorislav Petkov * 66239094443SBorislav Petkov * A MC driver can limit the scrubbing bandwidth based on the CPU type. 66339094443SBorislav Petkov * Therefore, ->set_sdram_scrub_rate should be made to return the actual 66439094443SBorislav Petkov * bandwidth that is accepted or 0 when scrubbing is to be disabled. 66539094443SBorislav Petkov * 66639094443SBorislav Petkov * Negative value still means that an error has occurred while setting 66739094443SBorislav Petkov * the scrub rate. 66839094443SBorislav Petkov */ 6697a623c03SMauro Carvalho Chehab static ssize_t mci_sdram_scrub_rate_store(struct device *dev, 6707a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 6717c9281d7SDouglas Thompson const char *data, size_t count) 6727c9281d7SDouglas Thompson { 6737a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 674eba042a8SBorislav Petkov unsigned long bandwidth = 0; 67539094443SBorislav Petkov int new_bw = 0; 6767c9281d7SDouglas Thompson 67739094443SBorislav Petkov if (!mci->set_sdram_scrub_rate) 6785e8e19bfSBorislav Petkov return -ENODEV; 679eba042a8SBorislav Petkov 680eba042a8SBorislav Petkov if (strict_strtoul(data, 10, &bandwidth) < 0) 681eba042a8SBorislav Petkov return -EINVAL; 682eba042a8SBorislav Petkov 68339094443SBorislav Petkov new_bw = mci->set_sdram_scrub_rate(mci, bandwidth); 6844949603aSMarkus Trippelsdorf if (new_bw < 0) { 6854949603aSMarkus Trippelsdorf edac_printk(KERN_WARNING, EDAC_MC, 6864949603aSMarkus Trippelsdorf "Error setting scrub rate to: %lu\n", bandwidth); 6874949603aSMarkus Trippelsdorf return -EINVAL; 6887c9281d7SDouglas Thompson } 6897c9281d7SDouglas Thompson 6904949603aSMarkus Trippelsdorf return count; 6917c9281d7SDouglas Thompson } 692eba042a8SBorislav Petkov 69339094443SBorislav Petkov /* 69439094443SBorislav Petkov * ->get_sdram_scrub_rate() return value semantics same as above. 69539094443SBorislav Petkov */ 6967a623c03SMauro Carvalho Chehab static ssize_t mci_sdram_scrub_rate_show(struct device *dev, 6977a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 6987a623c03SMauro Carvalho Chehab char *data) 69939094443SBorislav Petkov { 7007a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 70139094443SBorislav Petkov int bandwidth = 0; 70239094443SBorislav Petkov 70339094443SBorislav Petkov if (!mci->get_sdram_scrub_rate) 7045e8e19bfSBorislav Petkov return -ENODEV; 70539094443SBorislav Petkov 70639094443SBorislav Petkov bandwidth = mci->get_sdram_scrub_rate(mci); 70739094443SBorislav Petkov if (bandwidth < 0) { 708eba042a8SBorislav Petkov edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n"); 70939094443SBorislav Petkov return bandwidth; 710eba042a8SBorislav Petkov } 71139094443SBorislav Petkov 7127c9281d7SDouglas Thompson return sprintf(data, "%d\n", bandwidth); 7137c9281d7SDouglas Thompson } 7147c9281d7SDouglas Thompson 7157c9281d7SDouglas Thompson /* default attribute files for the MCI object */ 7167a623c03SMauro Carvalho Chehab static ssize_t mci_ue_count_show(struct device *dev, 7177a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7187a623c03SMauro Carvalho Chehab char *data) 7197c9281d7SDouglas Thompson { 7207a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7217a623c03SMauro Carvalho Chehab 7225926ff50SMauro Carvalho Chehab return sprintf(data, "%d\n", mci->ue_mc); 7237c9281d7SDouglas Thompson } 7247c9281d7SDouglas Thompson 7257a623c03SMauro Carvalho Chehab static ssize_t mci_ce_count_show(struct device *dev, 7267a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7277a623c03SMauro Carvalho Chehab char *data) 7287c9281d7SDouglas Thompson { 7297a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7307a623c03SMauro Carvalho Chehab 7315926ff50SMauro Carvalho Chehab return sprintf(data, "%d\n", mci->ce_mc); 7327c9281d7SDouglas Thompson } 7337c9281d7SDouglas Thompson 7347a623c03SMauro Carvalho Chehab static ssize_t mci_ce_noinfo_show(struct device *dev, 7357a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7367a623c03SMauro Carvalho Chehab char *data) 7377c9281d7SDouglas Thompson { 7387a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7397a623c03SMauro Carvalho Chehab 7407c9281d7SDouglas Thompson return sprintf(data, "%d\n", mci->ce_noinfo_count); 7417c9281d7SDouglas Thompson } 7427c9281d7SDouglas Thompson 7437a623c03SMauro Carvalho Chehab static ssize_t mci_ue_noinfo_show(struct device *dev, 7447a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7457a623c03SMauro Carvalho Chehab char *data) 7467c9281d7SDouglas Thompson { 7477a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7487a623c03SMauro Carvalho Chehab 7497c9281d7SDouglas Thompson return sprintf(data, "%d\n", mci->ue_noinfo_count); 7507c9281d7SDouglas Thompson } 7517c9281d7SDouglas Thompson 7527a623c03SMauro Carvalho Chehab static ssize_t mci_seconds_show(struct device *dev, 7537a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7547a623c03SMauro Carvalho Chehab char *data) 7557c9281d7SDouglas Thompson { 7567a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7577a623c03SMauro Carvalho Chehab 7587c9281d7SDouglas Thompson return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ); 7597c9281d7SDouglas Thompson } 7607c9281d7SDouglas Thompson 7617a623c03SMauro Carvalho Chehab static ssize_t mci_ctl_name_show(struct device *dev, 7627a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7637a623c03SMauro Carvalho Chehab char *data) 7647c9281d7SDouglas Thompson { 7657a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7667a623c03SMauro Carvalho Chehab 7677c9281d7SDouglas Thompson return sprintf(data, "%s\n", mci->ctl_name); 7687c9281d7SDouglas Thompson } 7697c9281d7SDouglas Thompson 7707a623c03SMauro Carvalho Chehab static ssize_t mci_size_mb_show(struct device *dev, 7717a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7727a623c03SMauro Carvalho Chehab char *data) 7737c9281d7SDouglas Thompson { 7747a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 775a895bf8bSMauro Carvalho Chehab int total_pages = 0, csrow_idx, j; 7767c9281d7SDouglas Thompson 777a895bf8bSMauro Carvalho Chehab for (csrow_idx = 0; csrow_idx < mci->nr_csrows; csrow_idx++) { 778de3910ebSMauro Carvalho Chehab struct csrow_info *csrow = mci->csrows[csrow_idx]; 7797c9281d7SDouglas Thompson 780a895bf8bSMauro Carvalho Chehab for (j = 0; j < csrow->nr_channels; j++) { 781de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = csrow->channels[j]->dimm; 7827c9281d7SDouglas Thompson 783a895bf8bSMauro Carvalho Chehab total_pages += dimm->nr_pages; 784a895bf8bSMauro Carvalho Chehab } 7857c9281d7SDouglas Thompson } 7867c9281d7SDouglas Thompson 7877c9281d7SDouglas Thompson return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages)); 7887c9281d7SDouglas Thompson } 7897c9281d7SDouglas Thompson 7908ad6c78aSMauro Carvalho Chehab static ssize_t mci_max_location_show(struct device *dev, 7918ad6c78aSMauro Carvalho Chehab struct device_attribute *mattr, 7928ad6c78aSMauro Carvalho Chehab char *data) 7938ad6c78aSMauro Carvalho Chehab { 7948ad6c78aSMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7958ad6c78aSMauro Carvalho Chehab int i; 7968ad6c78aSMauro Carvalho Chehab char *p = data; 7978ad6c78aSMauro Carvalho Chehab 7988ad6c78aSMauro Carvalho Chehab for (i = 0; i < mci->n_layers; i++) { 7998ad6c78aSMauro Carvalho Chehab p += sprintf(p, "%s %d ", 8008ad6c78aSMauro Carvalho Chehab edac_layer_name[mci->layers[i].type], 8018ad6c78aSMauro Carvalho Chehab mci->layers[i].size - 1); 8028ad6c78aSMauro Carvalho Chehab } 8038ad6c78aSMauro Carvalho Chehab 8048ad6c78aSMauro Carvalho Chehab return p - data; 8058ad6c78aSMauro Carvalho Chehab } 8068ad6c78aSMauro Carvalho Chehab 807452a6bf9SMauro Carvalho Chehab #ifdef CONFIG_EDAC_DEBUG 808452a6bf9SMauro Carvalho Chehab static ssize_t edac_fake_inject_write(struct file *file, 809452a6bf9SMauro Carvalho Chehab const char __user *data, 810452a6bf9SMauro Carvalho Chehab size_t count, loff_t *ppos) 811452a6bf9SMauro Carvalho Chehab { 812452a6bf9SMauro Carvalho Chehab struct device *dev = file->private_data; 813452a6bf9SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 814452a6bf9SMauro Carvalho Chehab static enum hw_event_mc_err_type type; 815452a6bf9SMauro Carvalho Chehab 816452a6bf9SMauro Carvalho Chehab type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED 817452a6bf9SMauro Carvalho Chehab : HW_EVENT_ERR_CORRECTED; 818452a6bf9SMauro Carvalho Chehab 819452a6bf9SMauro Carvalho Chehab printk(KERN_DEBUG 820452a6bf9SMauro Carvalho Chehab "Generating a %s fake error to %d.%d.%d to test core handling. NOTE: this won't test the driver-specific decoding logic.\n", 821452a6bf9SMauro Carvalho Chehab (type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE", 822452a6bf9SMauro Carvalho Chehab mci->fake_inject_layer[0], 823452a6bf9SMauro Carvalho Chehab mci->fake_inject_layer[1], 824452a6bf9SMauro Carvalho Chehab mci->fake_inject_layer[2] 825452a6bf9SMauro Carvalho Chehab ); 8269eb07a7fSMauro Carvalho Chehab edac_mc_handle_error(type, mci, 1, 0, 0, 0, 827452a6bf9SMauro Carvalho Chehab mci->fake_inject_layer[0], 828452a6bf9SMauro Carvalho Chehab mci->fake_inject_layer[1], 829452a6bf9SMauro Carvalho Chehab mci->fake_inject_layer[2], 83003f7eae8SMauro Carvalho Chehab "FAKE ERROR", "for EDAC testing only"); 831452a6bf9SMauro Carvalho Chehab 832452a6bf9SMauro Carvalho Chehab return count; 833452a6bf9SMauro Carvalho Chehab } 834452a6bf9SMauro Carvalho Chehab 835452a6bf9SMauro Carvalho Chehab static int debugfs_open(struct inode *inode, struct file *file) 836452a6bf9SMauro Carvalho Chehab { 837452a6bf9SMauro Carvalho Chehab file->private_data = inode->i_private; 838452a6bf9SMauro Carvalho Chehab return 0; 839452a6bf9SMauro Carvalho Chehab } 840452a6bf9SMauro Carvalho Chehab 841452a6bf9SMauro Carvalho Chehab static const struct file_operations debug_fake_inject_fops = { 842452a6bf9SMauro Carvalho Chehab .open = debugfs_open, 843452a6bf9SMauro Carvalho Chehab .write = edac_fake_inject_write, 844452a6bf9SMauro Carvalho Chehab .llseek = generic_file_llseek, 845452a6bf9SMauro Carvalho Chehab }; 846452a6bf9SMauro Carvalho Chehab #endif 847452a6bf9SMauro Carvalho Chehab 8487c9281d7SDouglas Thompson /* default Control file */ 8497a623c03SMauro Carvalho Chehab DEVICE_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store); 8507c9281d7SDouglas Thompson 8517c9281d7SDouglas Thompson /* default Attribute files */ 8527a623c03SMauro Carvalho Chehab DEVICE_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL); 8537a623c03SMauro Carvalho Chehab DEVICE_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL); 8547a623c03SMauro Carvalho Chehab DEVICE_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL); 8557a623c03SMauro Carvalho Chehab DEVICE_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL); 8567a623c03SMauro Carvalho Chehab DEVICE_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL); 8577a623c03SMauro Carvalho Chehab DEVICE_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL); 8587a623c03SMauro Carvalho Chehab DEVICE_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL); 8598ad6c78aSMauro Carvalho Chehab DEVICE_ATTR(max_location, S_IRUGO, mci_max_location_show, NULL); 8607c9281d7SDouglas Thompson 8617c9281d7SDouglas Thompson /* memory scrubber attribute file */ 8627a623c03SMauro Carvalho Chehab DEVICE_ATTR(sdram_scrub_rate, S_IRUGO | S_IWUSR, mci_sdram_scrub_rate_show, 863e27e3dacSDouglas Thompson mci_sdram_scrub_rate_store); 8647c9281d7SDouglas Thompson 8657a623c03SMauro Carvalho Chehab static struct attribute *mci_attrs[] = { 8667a623c03SMauro Carvalho Chehab &dev_attr_reset_counters.attr, 8677a623c03SMauro Carvalho Chehab &dev_attr_mc_name.attr, 8687a623c03SMauro Carvalho Chehab &dev_attr_size_mb.attr, 8697a623c03SMauro Carvalho Chehab &dev_attr_seconds_since_reset.attr, 8707a623c03SMauro Carvalho Chehab &dev_attr_ue_noinfo_count.attr, 8717a623c03SMauro Carvalho Chehab &dev_attr_ce_noinfo_count.attr, 8727a623c03SMauro Carvalho Chehab &dev_attr_ue_count.attr, 8737a623c03SMauro Carvalho Chehab &dev_attr_ce_count.attr, 8747a623c03SMauro Carvalho Chehab &dev_attr_sdram_scrub_rate.attr, 8758ad6c78aSMauro Carvalho Chehab &dev_attr_max_location.attr, 8767c9281d7SDouglas Thompson NULL 8777c9281d7SDouglas Thompson }; 8787c9281d7SDouglas Thompson 8797a623c03SMauro Carvalho Chehab static struct attribute_group mci_attr_grp = { 8807a623c03SMauro Carvalho Chehab .attrs = mci_attrs, 8817c9281d7SDouglas Thompson }; 8827c9281d7SDouglas Thompson 8837a623c03SMauro Carvalho Chehab static const struct attribute_group *mci_attr_groups[] = { 8847a623c03SMauro Carvalho Chehab &mci_attr_grp, 8857a623c03SMauro Carvalho Chehab NULL 886cc301b3aSMauro Carvalho Chehab }; 887cc301b3aSMauro Carvalho Chehab 888de3910ebSMauro Carvalho Chehab static void mci_attr_release(struct device *dev) 8897a623c03SMauro Carvalho Chehab { 890de3910ebSMauro Carvalho Chehab struct mem_ctl_info *mci = container_of(dev, struct mem_ctl_info, dev); 891de3910ebSMauro Carvalho Chehab 892956b9ba1SJoe Perches edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev)); 893de3910ebSMauro Carvalho Chehab kfree(mci); 8947a623c03SMauro Carvalho Chehab } 8957a623c03SMauro Carvalho Chehab 8967a623c03SMauro Carvalho Chehab static struct device_type mci_attr_type = { 8977a623c03SMauro Carvalho Chehab .groups = mci_attr_groups, 8987a623c03SMauro Carvalho Chehab .release = mci_attr_release, 899cc301b3aSMauro Carvalho Chehab }; 900cc301b3aSMauro Carvalho Chehab 901452a6bf9SMauro Carvalho Chehab #ifdef CONFIG_EDAC_DEBUG 902452a6bf9SMauro Carvalho Chehab int edac_create_debug_nodes(struct mem_ctl_info *mci) 903452a6bf9SMauro Carvalho Chehab { 904452a6bf9SMauro Carvalho Chehab struct dentry *d, *parent; 905452a6bf9SMauro Carvalho Chehab char name[80]; 906452a6bf9SMauro Carvalho Chehab int i; 907452a6bf9SMauro Carvalho Chehab 908452a6bf9SMauro Carvalho Chehab d = debugfs_create_dir(mci->dev.kobj.name, mci->debugfs); 909452a6bf9SMauro Carvalho Chehab if (!d) 910452a6bf9SMauro Carvalho Chehab return -ENOMEM; 911452a6bf9SMauro Carvalho Chehab parent = d; 912452a6bf9SMauro Carvalho Chehab 913452a6bf9SMauro Carvalho Chehab for (i = 0; i < mci->n_layers; i++) { 914452a6bf9SMauro Carvalho Chehab sprintf(name, "fake_inject_%s", 915452a6bf9SMauro Carvalho Chehab edac_layer_name[mci->layers[i].type]); 916452a6bf9SMauro Carvalho Chehab d = debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent, 917452a6bf9SMauro Carvalho Chehab &mci->fake_inject_layer[i]); 918452a6bf9SMauro Carvalho Chehab if (!d) 919452a6bf9SMauro Carvalho Chehab goto nomem; 920452a6bf9SMauro Carvalho Chehab } 921452a6bf9SMauro Carvalho Chehab 922452a6bf9SMauro Carvalho Chehab d = debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent, 923452a6bf9SMauro Carvalho Chehab &mci->fake_inject_ue); 924452a6bf9SMauro Carvalho Chehab if (!d) 925452a6bf9SMauro Carvalho Chehab goto nomem; 926452a6bf9SMauro Carvalho Chehab 927452a6bf9SMauro Carvalho Chehab d = debugfs_create_file("fake_inject", S_IWUSR, parent, 928452a6bf9SMauro Carvalho Chehab &mci->dev, 929452a6bf9SMauro Carvalho Chehab &debug_fake_inject_fops); 930452a6bf9SMauro Carvalho Chehab if (!d) 931452a6bf9SMauro Carvalho Chehab goto nomem; 932452a6bf9SMauro Carvalho Chehab 933452a6bf9SMauro Carvalho Chehab return 0; 934452a6bf9SMauro Carvalho Chehab nomem: 935452a6bf9SMauro Carvalho Chehab debugfs_remove(mci->debugfs); 936452a6bf9SMauro Carvalho Chehab return -ENOMEM; 937452a6bf9SMauro Carvalho Chehab } 938452a6bf9SMauro Carvalho Chehab #endif 939452a6bf9SMauro Carvalho Chehab 9407c9281d7SDouglas Thompson /* 9417c9281d7SDouglas Thompson * Create a new Memory Controller kobject instance, 9427c9281d7SDouglas Thompson * mc<id> under the 'mc' directory 9437c9281d7SDouglas Thompson * 9447c9281d7SDouglas Thompson * Return: 9457c9281d7SDouglas Thompson * 0 Success 9467c9281d7SDouglas Thompson * !0 Failure 9477c9281d7SDouglas Thompson */ 9487c9281d7SDouglas Thompson int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) 9497c9281d7SDouglas Thompson { 9507a623c03SMauro Carvalho Chehab int i, err; 9517c9281d7SDouglas Thompson 9527a623c03SMauro Carvalho Chehab /* 9537a623c03SMauro Carvalho Chehab * The memory controller needs its own bus, in order to avoid 9547a623c03SMauro Carvalho Chehab * namespace conflicts at /sys/bus/edac. 95542a8e397SDouglas Thompson */ 956de3910ebSMauro Carvalho Chehab mci->bus.name = kasprintf(GFP_KERNEL, "mc%d", mci->mc_idx); 957de3910ebSMauro Carvalho Chehab if (!mci->bus.name) 958de3910ebSMauro Carvalho Chehab return -ENOMEM; 959956b9ba1SJoe Perches edac_dbg(0, "creating bus %s\n", mci->bus.name); 9607a623c03SMauro Carvalho Chehab err = bus_register(&mci->bus); 9617a623c03SMauro Carvalho Chehab if (err < 0) 9627a623c03SMauro Carvalho Chehab return err; 9637a623c03SMauro Carvalho Chehab 964de3910ebSMauro Carvalho Chehab /* get the /sys/devices/system/edac subsys reference */ 965de3910ebSMauro Carvalho Chehab mci->dev.type = &mci_attr_type; 966de3910ebSMauro Carvalho Chehab device_initialize(&mci->dev); 967de3910ebSMauro Carvalho Chehab 968de3910ebSMauro Carvalho Chehab mci->dev.parent = mci_pdev; 969de3910ebSMauro Carvalho Chehab mci->dev.bus = &mci->bus; 970de3910ebSMauro Carvalho Chehab dev_set_name(&mci->dev, "mc%d", mci->mc_idx); 971de3910ebSMauro Carvalho Chehab dev_set_drvdata(&mci->dev, mci); 972de3910ebSMauro Carvalho Chehab pm_runtime_forbid(&mci->dev); 973de3910ebSMauro Carvalho Chehab 974956b9ba1SJoe Perches edac_dbg(0, "creating device %s\n", dev_name(&mci->dev)); 9757a623c03SMauro Carvalho Chehab err = device_add(&mci->dev); 9767a623c03SMauro Carvalho Chehab if (err < 0) { 9777a623c03SMauro Carvalho Chehab bus_unregister(&mci->bus); 9787a623c03SMauro Carvalho Chehab kfree(mci->bus.name); 9797a623c03SMauro Carvalho Chehab return err; 9808096cfafSDoug Thompson } 98142a8e397SDouglas Thompson 9827a623c03SMauro Carvalho Chehab /* 9837a623c03SMauro Carvalho Chehab * Create the dimm/rank devices 9847c9281d7SDouglas Thompson */ 9857a623c03SMauro Carvalho Chehab for (i = 0; i < mci->tot_dimms; i++) { 986de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = mci->dimms[i]; 9877a623c03SMauro Carvalho Chehab /* Only expose populated DIMMs */ 9887a623c03SMauro Carvalho Chehab if (dimm->nr_pages == 0) 9897a623c03SMauro Carvalho Chehab continue; 9907a623c03SMauro Carvalho Chehab #ifdef CONFIG_EDAC_DEBUG 991956b9ba1SJoe Perches edac_dbg(1, "creating dimm%d, located at ", i); 9927a623c03SMauro Carvalho Chehab if (edac_debug_level >= 1) { 9937a623c03SMauro Carvalho Chehab int lay; 9947a623c03SMauro Carvalho Chehab for (lay = 0; lay < mci->n_layers; lay++) 9957a623c03SMauro Carvalho Chehab printk(KERN_CONT "%s %d ", 9967a623c03SMauro Carvalho Chehab edac_layer_name[mci->layers[lay].type], 9977a623c03SMauro Carvalho Chehab dimm->location[lay]); 9987a623c03SMauro Carvalho Chehab printk(KERN_CONT "\n"); 9997c9281d7SDouglas Thompson } 10007a623c03SMauro Carvalho Chehab #endif 100119974710SMauro Carvalho Chehab err = edac_create_dimm_object(mci, dimm, i); 100219974710SMauro Carvalho Chehab if (err) { 1003956b9ba1SJoe Perches edac_dbg(1, "failure: create dimm %d obj\n", i); 100419974710SMauro Carvalho Chehab goto fail; 100519974710SMauro Carvalho Chehab } 10067c9281d7SDouglas Thompson } 10077a623c03SMauro Carvalho Chehab 100819974710SMauro Carvalho Chehab #ifdef CONFIG_EDAC_LEGACY_SYSFS 10097a623c03SMauro Carvalho Chehab err = edac_create_csrow_objects(mci); 10107a623c03SMauro Carvalho Chehab if (err < 0) 10117a623c03SMauro Carvalho Chehab goto fail; 101219974710SMauro Carvalho Chehab #endif 10137c9281d7SDouglas Thompson 1014452a6bf9SMauro Carvalho Chehab #ifdef CONFIG_EDAC_DEBUG 1015452a6bf9SMauro Carvalho Chehab edac_create_debug_nodes(mci); 1016452a6bf9SMauro Carvalho Chehab #endif 10177c9281d7SDouglas Thompson return 0; 10187c9281d7SDouglas Thompson 10197a623c03SMauro Carvalho Chehab fail: 10207c9281d7SDouglas Thompson for (i--; i >= 0; i--) { 1021de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = mci->dimms[i]; 10227a623c03SMauro Carvalho Chehab if (dimm->nr_pages == 0) 10237a623c03SMauro Carvalho Chehab continue; 10247a623c03SMauro Carvalho Chehab put_device(&dimm->dev); 10257a623c03SMauro Carvalho Chehab device_del(&dimm->dev); 10267c9281d7SDouglas Thompson } 10277a623c03SMauro Carvalho Chehab put_device(&mci->dev); 10287a623c03SMauro Carvalho Chehab device_del(&mci->dev); 10297a623c03SMauro Carvalho Chehab bus_unregister(&mci->bus); 10307a623c03SMauro Carvalho Chehab kfree(mci->bus.name); 10317c9281d7SDouglas Thompson return err; 10327c9281d7SDouglas Thompson } 10337c9281d7SDouglas Thompson 10347c9281d7SDouglas Thompson /* 10357c9281d7SDouglas Thompson * remove a Memory Controller instance 10367c9281d7SDouglas Thompson */ 10377c9281d7SDouglas Thompson void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) 10387c9281d7SDouglas Thompson { 10397a623c03SMauro Carvalho Chehab int i; 10407c9281d7SDouglas Thompson 1041956b9ba1SJoe Perches edac_dbg(0, "\n"); 10427c9281d7SDouglas Thompson 1043452a6bf9SMauro Carvalho Chehab #ifdef CONFIG_EDAC_DEBUG 1044452a6bf9SMauro Carvalho Chehab debugfs_remove(mci->debugfs); 1045452a6bf9SMauro Carvalho Chehab #endif 104619974710SMauro Carvalho Chehab #ifdef CONFIG_EDAC_LEGACY_SYSFS 10477a623c03SMauro Carvalho Chehab edac_delete_csrow_objects(mci); 104819974710SMauro Carvalho Chehab #endif 1049a895bf8bSMauro Carvalho Chehab 10507a623c03SMauro Carvalho Chehab for (i = 0; i < mci->tot_dimms; i++) { 1051de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = mci->dimms[i]; 10527a623c03SMauro Carvalho Chehab if (dimm->nr_pages == 0) 10537a623c03SMauro Carvalho Chehab continue; 1054956b9ba1SJoe Perches edac_dbg(0, "removing device %s\n", dev_name(&dimm->dev)); 10557a623c03SMauro Carvalho Chehab put_device(&dimm->dev); 10567a623c03SMauro Carvalho Chehab device_del(&dimm->dev); 10577c9281d7SDouglas Thompson } 10587c9281d7SDouglas Thompson } 10597c9281d7SDouglas Thompson 10607a623c03SMauro Carvalho Chehab void edac_unregister_sysfs(struct mem_ctl_info *mci) 10618096cfafSDoug Thompson { 1062956b9ba1SJoe Perches edac_dbg(1, "Unregistering device %s\n", dev_name(&mci->dev)); 10637a623c03SMauro Carvalho Chehab put_device(&mci->dev); 10647a623c03SMauro Carvalho Chehab device_del(&mci->dev); 10657a623c03SMauro Carvalho Chehab bus_unregister(&mci->bus); 10667a623c03SMauro Carvalho Chehab kfree(mci->bus.name); 10677a623c03SMauro Carvalho Chehab } 10688096cfafSDoug Thompson 1069de3910ebSMauro Carvalho Chehab static void mc_attr_release(struct device *dev) 10707a623c03SMauro Carvalho Chehab { 1071de3910ebSMauro Carvalho Chehab /* 1072de3910ebSMauro Carvalho Chehab * There's no container structure here, as this is just the mci 1073de3910ebSMauro Carvalho Chehab * parent device, used to create the /sys/devices/mc sysfs node. 1074de3910ebSMauro Carvalho Chehab * So, there are no attributes on it. 1075de3910ebSMauro Carvalho Chehab */ 1076956b9ba1SJoe Perches edac_dbg(1, "Releasing device %s\n", dev_name(dev)); 1077de3910ebSMauro Carvalho Chehab kfree(dev); 10787a623c03SMauro Carvalho Chehab } 10797a623c03SMauro Carvalho Chehab 10807a623c03SMauro Carvalho Chehab static struct device_type mc_attr_type = { 10817a623c03SMauro Carvalho Chehab .release = mc_attr_release, 10827a623c03SMauro Carvalho Chehab }; 10837a623c03SMauro Carvalho Chehab /* 10847a623c03SMauro Carvalho Chehab * Init/exit code for the module. Basically, creates/removes /sys/class/rc 10857a623c03SMauro Carvalho Chehab */ 10867a623c03SMauro Carvalho Chehab int __init edac_mc_sysfs_init(void) 10877a623c03SMauro Carvalho Chehab { 10887a623c03SMauro Carvalho Chehab struct bus_type *edac_subsys; 10897a623c03SMauro Carvalho Chehab int err; 10908096cfafSDoug Thompson 1091fe5ff8b8SKay Sievers /* get the /sys/devices/system/edac subsys reference */ 1092fe5ff8b8SKay Sievers edac_subsys = edac_get_sysfs_subsys(); 1093fe5ff8b8SKay Sievers if (edac_subsys == NULL) { 1094956b9ba1SJoe Perches edac_dbg(1, "no edac_subsys\n"); 10957a623c03SMauro Carvalho Chehab return -EINVAL; 10968096cfafSDoug Thompson } 10978096cfafSDoug Thompson 1098de3910ebSMauro Carvalho Chehab mci_pdev = kzalloc(sizeof(*mci_pdev), GFP_KERNEL); 10998096cfafSDoug Thompson 1100de3910ebSMauro Carvalho Chehab mci_pdev->bus = edac_subsys; 1101de3910ebSMauro Carvalho Chehab mci_pdev->type = &mc_attr_type; 1102de3910ebSMauro Carvalho Chehab device_initialize(mci_pdev); 1103de3910ebSMauro Carvalho Chehab dev_set_name(mci_pdev, "mc"); 1104de3910ebSMauro Carvalho Chehab 1105de3910ebSMauro Carvalho Chehab err = device_add(mci_pdev); 11067a623c03SMauro Carvalho Chehab if (err < 0) 11077a623c03SMauro Carvalho Chehab return err; 11088096cfafSDoug Thompson 1109956b9ba1SJoe Perches edac_dbg(0, "device %s created\n", dev_name(mci_pdev)); 1110de3910ebSMauro Carvalho Chehab 11118096cfafSDoug Thompson return 0; 11128096cfafSDoug Thompson } 11138096cfafSDoug Thompson 11147a623c03SMauro Carvalho Chehab void __exit edac_mc_sysfs_exit(void) 11158096cfafSDoug Thompson { 1116de3910ebSMauro Carvalho Chehab put_device(mci_pdev); 1117de3910ebSMauro Carvalho Chehab device_del(mci_pdev); 1118fe5ff8b8SKay Sievers edac_put_sysfs_subsys(); 11198096cfafSDoug Thompson } 1120