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 * 1037e59f87SMauro Carvalho Chehab * (c) 2012-2013 - Mauro Carvalho Chehab 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 2278d88e8aSMauro Carvalho Chehab #include "edac_mc.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 53e4dca7b7SKees Cook static int edac_set_poll_msec(const char *val, const struct kernel_param *kp) 54096846e2SArthur Jones { 559da21b15SBorislav Petkov unsigned long l; 56096846e2SArthur Jones int ret; 57096846e2SArthur Jones 58096846e2SArthur Jones if (!val) 59096846e2SArthur Jones return -EINVAL; 60096846e2SArthur Jones 619da21b15SBorislav Petkov ret = kstrtoul(val, 0, &l); 62c542b53dSJingoo Han if (ret) 63c542b53dSJingoo Han return ret; 649da21b15SBorislav Petkov 659da21b15SBorislav Petkov if (l < 1000) 66096846e2SArthur Jones return -EINVAL; 679da21b15SBorislav Petkov 689da21b15SBorislav Petkov *((unsigned long *)kp->arg) = l; 69096846e2SArthur Jones 70096846e2SArthur Jones /* notify edac_mc engine to reset the poll period */ 71096846e2SArthur Jones edac_mc_reset_delay_period(l); 72096846e2SArthur Jones 73096846e2SArthur Jones return 0; 74096846e2SArthur Jones } 75096846e2SArthur Jones 767c9281d7SDouglas Thompson /* Parameter declarations for above */ 774de78c68SDave Jiang module_param(edac_mc_panic_on_ue, int, 0644); 784de78c68SDave Jiang MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); 794de78c68SDave Jiang module_param(edac_mc_log_ue, int, 0644); 804de78c68SDave Jiang MODULE_PARM_DESC(edac_mc_log_ue, 814de78c68SDave Jiang "Log uncorrectable error to console: 0=off 1=on"); 824de78c68SDave Jiang module_param(edac_mc_log_ce, int, 0644); 834de78c68SDave Jiang MODULE_PARM_DESC(edac_mc_log_ce, 844de78c68SDave Jiang "Log correctable error to console: 0=off 1=on"); 85096846e2SArthur Jones module_param_call(edac_mc_poll_msec, edac_set_poll_msec, param_get_int, 86096846e2SArthur Jones &edac_mc_poll_msec, 0644); 874de78c68SDave Jiang MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds"); 887c9281d7SDouglas Thompson 89de3910ebSMauro Carvalho Chehab static struct device *mci_pdev; 907a623c03SMauro Carvalho Chehab 917c9281d7SDouglas Thompson /* 927c9281d7SDouglas Thompson * various constants for Memory Controllers 937c9281d7SDouglas Thompson */ 948b7719e0SBorislav Petkov static const char * const dev_types[] = { 957c9281d7SDouglas Thompson [DEV_UNKNOWN] = "Unknown", 967c9281d7SDouglas Thompson [DEV_X1] = "x1", 977c9281d7SDouglas Thompson [DEV_X2] = "x2", 987c9281d7SDouglas Thompson [DEV_X4] = "x4", 997c9281d7SDouglas Thompson [DEV_X8] = "x8", 1007c9281d7SDouglas Thompson [DEV_X16] = "x16", 1017c9281d7SDouglas Thompson [DEV_X32] = "x32", 1027c9281d7SDouglas Thompson [DEV_X64] = "x64" 1037c9281d7SDouglas Thompson }; 1047c9281d7SDouglas Thompson 1058b7719e0SBorislav Petkov static const char * const edac_caps[] = { 1067c9281d7SDouglas Thompson [EDAC_UNKNOWN] = "Unknown", 1077c9281d7SDouglas Thompson [EDAC_NONE] = "None", 1087c9281d7SDouglas Thompson [EDAC_RESERVED] = "Reserved", 1097c9281d7SDouglas Thompson [EDAC_PARITY] = "PARITY", 1107c9281d7SDouglas Thompson [EDAC_EC] = "EC", 1117c9281d7SDouglas Thompson [EDAC_SECDED] = "SECDED", 1127c9281d7SDouglas Thompson [EDAC_S2ECD2ED] = "S2ECD2ED", 1137c9281d7SDouglas Thompson [EDAC_S4ECD4ED] = "S4ECD4ED", 1147c9281d7SDouglas Thompson [EDAC_S8ECD8ED] = "S8ECD8ED", 1157c9281d7SDouglas Thompson [EDAC_S16ECD16ED] = "S16ECD16ED" 1167c9281d7SDouglas Thompson }; 1177c9281d7SDouglas Thompson 11819974710SMauro Carvalho Chehab #ifdef CONFIG_EDAC_LEGACY_SYSFS 1197a623c03SMauro Carvalho Chehab /* 1207a623c03SMauro Carvalho Chehab * EDAC sysfs CSROW data structures and methods 1217c9281d7SDouglas Thompson */ 1227c9281d7SDouglas Thompson 1237a623c03SMauro Carvalho Chehab #define to_csrow(k) container_of(k, struct csrow_info, dev) 1247a623c03SMauro Carvalho Chehab 1257a623c03SMauro Carvalho Chehab /* 1267a623c03SMauro Carvalho Chehab * We need it to avoid namespace conflicts between the legacy API 1277a623c03SMauro Carvalho Chehab * and the per-dimm/per-rank one 1287a623c03SMauro Carvalho Chehab */ 1297a623c03SMauro Carvalho Chehab #define DEVICE_ATTR_LEGACY(_name, _mode, _show, _store) \ 130fbe2d361SStephen Hemminger static struct device_attribute dev_attr_legacy_##_name = __ATTR(_name, _mode, _show, _store) 1317a623c03SMauro Carvalho Chehab 1327a623c03SMauro Carvalho Chehab struct dev_ch_attribute { 1337a623c03SMauro Carvalho Chehab struct device_attribute attr; 1347a623c03SMauro Carvalho Chehab int channel; 1357a623c03SMauro Carvalho Chehab }; 1367a623c03SMauro Carvalho Chehab 1377a623c03SMauro Carvalho Chehab #define DEVICE_CHANNEL(_name, _mode, _show, _store, _var) \ 138f11135d8SBorislav Petkov static struct dev_ch_attribute dev_attr_legacy_##_name = \ 1397a623c03SMauro Carvalho Chehab { __ATTR(_name, _mode, _show, _store), (_var) } 1407a623c03SMauro Carvalho Chehab 1417a623c03SMauro Carvalho Chehab #define to_channel(k) (container_of(k, struct dev_ch_attribute, attr)->channel) 1427a623c03SMauro Carvalho Chehab 1437c9281d7SDouglas Thompson /* Set of more default csrow<id> attribute show/store functions */ 1447a623c03SMauro Carvalho Chehab static ssize_t csrow_ue_count_show(struct device *dev, 1457a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 1467c9281d7SDouglas Thompson { 1477a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 1487a623c03SMauro Carvalho Chehab 1497c9281d7SDouglas Thompson return sprintf(data, "%u\n", csrow->ue_count); 1507c9281d7SDouglas Thompson } 1517c9281d7SDouglas Thompson 1527a623c03SMauro Carvalho Chehab static ssize_t csrow_ce_count_show(struct device *dev, 1537a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 1547c9281d7SDouglas Thompson { 1557a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 1567a623c03SMauro Carvalho Chehab 1577c9281d7SDouglas Thompson return sprintf(data, "%u\n", csrow->ce_count); 1587c9281d7SDouglas Thompson } 1597c9281d7SDouglas Thompson 1607a623c03SMauro Carvalho Chehab static ssize_t csrow_size_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); 164a895bf8bSMauro Carvalho Chehab int i; 165a895bf8bSMauro Carvalho Chehab u32 nr_pages = 0; 166a895bf8bSMauro Carvalho Chehab 167a895bf8bSMauro Carvalho Chehab for (i = 0; i < csrow->nr_channels; i++) 168de3910ebSMauro Carvalho Chehab nr_pages += csrow->channels[i]->dimm->nr_pages; 169a895bf8bSMauro Carvalho Chehab return sprintf(data, "%u\n", PAGES_TO_MiB(nr_pages)); 1707c9281d7SDouglas Thompson } 1717c9281d7SDouglas Thompson 1727a623c03SMauro Carvalho Chehab static ssize_t csrow_mem_type_show(struct device *dev, 1737a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 1747c9281d7SDouglas Thompson { 1757a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 1767a623c03SMauro Carvalho Chehab 177d6dd77ebSTony Luck return sprintf(data, "%s\n", edac_mem_types[csrow->channels[0]->dimm->mtype]); 1787c9281d7SDouglas Thompson } 1797c9281d7SDouglas Thompson 1807a623c03SMauro Carvalho Chehab static ssize_t csrow_dev_type_show(struct device *dev, 1817a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 1827c9281d7SDouglas Thompson { 1837a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 1847a623c03SMauro Carvalho Chehab 185de3910ebSMauro Carvalho Chehab return sprintf(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]); 1867c9281d7SDouglas Thompson } 1877c9281d7SDouglas Thompson 1887a623c03SMauro Carvalho Chehab static ssize_t csrow_edac_mode_show(struct device *dev, 1897a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 1907a623c03SMauro Carvalho Chehab char *data) 1917c9281d7SDouglas Thompson { 1927a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 1937a623c03SMauro Carvalho Chehab 194de3910ebSMauro Carvalho Chehab return sprintf(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]); 1957c9281d7SDouglas Thompson } 1967c9281d7SDouglas Thompson 1977c9281d7SDouglas Thompson /* show/store functions for DIMM Label attributes */ 1987a623c03SMauro Carvalho Chehab static ssize_t channel_dimm_label_show(struct device *dev, 1997a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 2007a623c03SMauro Carvalho Chehab char *data) 2017c9281d7SDouglas Thompson { 2027a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 2037a623c03SMauro Carvalho Chehab unsigned chan = to_channel(mattr); 204de3910ebSMauro Carvalho Chehab struct rank_info *rank = csrow->channels[chan]; 2057a623c03SMauro Carvalho Chehab 206124682c7SArthur Jones /* if field has not been initialized, there is nothing to send */ 2077a623c03SMauro Carvalho Chehab if (!rank->dimm->label[0]) 208124682c7SArthur Jones return 0; 209124682c7SArthur Jones 2101ea62c59SToshi Kani return snprintf(data, sizeof(rank->dimm->label) + 1, "%s\n", 2117a623c03SMauro Carvalho Chehab rank->dimm->label); 2127c9281d7SDouglas Thompson } 2137c9281d7SDouglas Thompson 2147a623c03SMauro Carvalho Chehab static ssize_t channel_dimm_label_store(struct device *dev, 2157a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 2167a623c03SMauro Carvalho Chehab const char *data, size_t count) 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]; 221438470b8SToshi Kani size_t copy_count = count; 2227a623c03SMauro Carvalho Chehab 223438470b8SToshi Kani if (count == 0) 224438470b8SToshi Kani return -EINVAL; 2257c9281d7SDouglas Thompson 226438470b8SToshi Kani if (data[count - 1] == '\0' || data[count - 1] == '\n') 227438470b8SToshi Kani copy_count -= 1; 2287c9281d7SDouglas Thompson 229d0c9c930SToshi Kani if (copy_count == 0 || copy_count >= sizeof(rank->dimm->label)) 230438470b8SToshi Kani return -EINVAL; 231438470b8SToshi Kani 232438470b8SToshi Kani strncpy(rank->dimm->label, data, copy_count); 233438470b8SToshi Kani rank->dimm->label[copy_count] = '\0'; 234438470b8SToshi Kani 235438470b8SToshi Kani return count; 2367c9281d7SDouglas Thompson } 2377c9281d7SDouglas Thompson 2387c9281d7SDouglas Thompson /* show function for dynamic chX_ce_count attribute */ 2397a623c03SMauro Carvalho Chehab static ssize_t channel_ce_count_show(struct device *dev, 2407a623c03SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 2417c9281d7SDouglas Thompson { 2427a623c03SMauro Carvalho Chehab struct csrow_info *csrow = to_csrow(dev); 2437a623c03SMauro Carvalho Chehab unsigned chan = to_channel(mattr); 244de3910ebSMauro Carvalho Chehab struct rank_info *rank = csrow->channels[chan]; 2457a623c03SMauro Carvalho Chehab 2467a623c03SMauro Carvalho Chehab return sprintf(data, "%u\n", rank->ce_count); 2477c9281d7SDouglas Thompson } 2487c9281d7SDouglas Thompson 2497a623c03SMauro Carvalho Chehab /* cwrow<id>/attribute files */ 2507a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(size_mb, S_IRUGO, csrow_size_show, NULL); 2517a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(dev_type, S_IRUGO, csrow_dev_type_show, NULL); 2527a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(mem_type, S_IRUGO, csrow_mem_type_show, NULL); 2537a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL); 2547a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(ue_count, S_IRUGO, csrow_ue_count_show, NULL); 2557a623c03SMauro Carvalho Chehab DEVICE_ATTR_LEGACY(ce_count, S_IRUGO, csrow_ce_count_show, NULL); 2567c9281d7SDouglas Thompson 2577c9281d7SDouglas Thompson /* default attributes of the CSROW<id> object */ 2587a623c03SMauro Carvalho Chehab static struct attribute *csrow_attrs[] = { 2597a623c03SMauro Carvalho Chehab &dev_attr_legacy_dev_type.attr, 2607a623c03SMauro Carvalho Chehab &dev_attr_legacy_mem_type.attr, 2617a623c03SMauro Carvalho Chehab &dev_attr_legacy_edac_mode.attr, 2627a623c03SMauro Carvalho Chehab &dev_attr_legacy_size_mb.attr, 2637a623c03SMauro Carvalho Chehab &dev_attr_legacy_ue_count.attr, 2647a623c03SMauro Carvalho Chehab &dev_attr_legacy_ce_count.attr, 2657c9281d7SDouglas Thompson NULL, 2667c9281d7SDouglas Thompson }; 2677c9281d7SDouglas Thompson 2681c18be5aSArvind Yadav static const struct attribute_group csrow_attr_grp = { 2697a623c03SMauro Carvalho Chehab .attrs = csrow_attrs, 2707c9281d7SDouglas Thompson }; 2717c9281d7SDouglas Thompson 2727a623c03SMauro Carvalho Chehab static const struct attribute_group *csrow_attr_groups[] = { 2737a623c03SMauro Carvalho Chehab &csrow_attr_grp, 2747a623c03SMauro Carvalho Chehab NULL 2757c9281d7SDouglas Thompson }; 2767c9281d7SDouglas Thompson 277de3910ebSMauro Carvalho Chehab static void csrow_attr_release(struct device *dev) 2787a623c03SMauro Carvalho Chehab { 279de3910ebSMauro Carvalho Chehab struct csrow_info *csrow = container_of(dev, struct csrow_info, dev); 280de3910ebSMauro Carvalho Chehab 281956b9ba1SJoe Perches edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev)); 282de3910ebSMauro Carvalho Chehab kfree(csrow); 2837a623c03SMauro Carvalho Chehab } 2847a623c03SMauro Carvalho Chehab 285b2b3e736SBhumika Goyal static const struct device_type csrow_attr_type = { 2867a623c03SMauro Carvalho Chehab .groups = csrow_attr_groups, 2877a623c03SMauro Carvalho Chehab .release = csrow_attr_release, 2887a623c03SMauro Carvalho Chehab }; 2897a623c03SMauro Carvalho Chehab 2907a623c03SMauro Carvalho Chehab /* 2917a623c03SMauro Carvalho Chehab * possible dynamic channel DIMM Label attribute files 2927a623c03SMauro Carvalho Chehab * 2937a623c03SMauro Carvalho Chehab */ 2947a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch0_dimm_label, S_IRUGO | S_IWUSR, 2957a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 0); 2967a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch1_dimm_label, S_IRUGO | S_IWUSR, 2977a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 1); 2987a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch2_dimm_label, S_IRUGO | S_IWUSR, 2997a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 2); 3007a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch3_dimm_label, S_IRUGO | S_IWUSR, 3017a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 3); 3027a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch4_dimm_label, S_IRUGO | S_IWUSR, 3037a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 4); 3047a623c03SMauro Carvalho Chehab DEVICE_CHANNEL(ch5_dimm_label, S_IRUGO | S_IWUSR, 3057a623c03SMauro Carvalho Chehab channel_dimm_label_show, channel_dimm_label_store, 5); 306bba14295SBorislav Petkov DEVICE_CHANNEL(ch6_dimm_label, S_IRUGO | S_IWUSR, 307bba14295SBorislav Petkov channel_dimm_label_show, channel_dimm_label_store, 6); 308bba14295SBorislav Petkov DEVICE_CHANNEL(ch7_dimm_label, S_IRUGO | S_IWUSR, 309bba14295SBorislav Petkov channel_dimm_label_show, channel_dimm_label_store, 7); 3107c9281d7SDouglas Thompson 3117a623c03SMauro Carvalho Chehab /* Total possible dynamic DIMM Label attribute file table */ 3122c1946b6STakashi Iwai static struct attribute *dynamic_csrow_dimm_attr[] = { 3132c1946b6STakashi Iwai &dev_attr_legacy_ch0_dimm_label.attr.attr, 3142c1946b6STakashi Iwai &dev_attr_legacy_ch1_dimm_label.attr.attr, 3152c1946b6STakashi Iwai &dev_attr_legacy_ch2_dimm_label.attr.attr, 3162c1946b6STakashi Iwai &dev_attr_legacy_ch3_dimm_label.attr.attr, 3172c1946b6STakashi Iwai &dev_attr_legacy_ch4_dimm_label.attr.attr, 3182c1946b6STakashi Iwai &dev_attr_legacy_ch5_dimm_label.attr.attr, 319bba14295SBorislav Petkov &dev_attr_legacy_ch6_dimm_label.attr.attr, 320bba14295SBorislav Petkov &dev_attr_legacy_ch7_dimm_label.attr.attr, 3212c1946b6STakashi Iwai NULL 3227a623c03SMauro Carvalho Chehab }; 3237c9281d7SDouglas Thompson 3247a623c03SMauro Carvalho Chehab /* possible dynamic channel ce_count attribute files */ 325c8c64d16SSrivatsa S. Bhat DEVICE_CHANNEL(ch0_ce_count, S_IRUGO, 3267a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 0); 327c8c64d16SSrivatsa S. Bhat DEVICE_CHANNEL(ch1_ce_count, S_IRUGO, 3287a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 1); 329c8c64d16SSrivatsa S. Bhat DEVICE_CHANNEL(ch2_ce_count, S_IRUGO, 3307a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 2); 331c8c64d16SSrivatsa S. Bhat DEVICE_CHANNEL(ch3_ce_count, S_IRUGO, 3327a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 3); 333c8c64d16SSrivatsa S. Bhat DEVICE_CHANNEL(ch4_ce_count, S_IRUGO, 3347a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 4); 335c8c64d16SSrivatsa S. Bhat DEVICE_CHANNEL(ch5_ce_count, S_IRUGO, 3367a623c03SMauro Carvalho Chehab channel_ce_count_show, NULL, 5); 337bba14295SBorislav Petkov DEVICE_CHANNEL(ch6_ce_count, S_IRUGO, 338bba14295SBorislav Petkov channel_ce_count_show, NULL, 6); 339bba14295SBorislav Petkov DEVICE_CHANNEL(ch7_ce_count, S_IRUGO, 340bba14295SBorislav Petkov channel_ce_count_show, NULL, 7); 3417c9281d7SDouglas Thompson 3427a623c03SMauro Carvalho Chehab /* Total possible dynamic ce_count attribute file table */ 3432c1946b6STakashi Iwai static struct attribute *dynamic_csrow_ce_count_attr[] = { 3442c1946b6STakashi Iwai &dev_attr_legacy_ch0_ce_count.attr.attr, 3452c1946b6STakashi Iwai &dev_attr_legacy_ch1_ce_count.attr.attr, 3462c1946b6STakashi Iwai &dev_attr_legacy_ch2_ce_count.attr.attr, 3472c1946b6STakashi Iwai &dev_attr_legacy_ch3_ce_count.attr.attr, 3482c1946b6STakashi Iwai &dev_attr_legacy_ch4_ce_count.attr.attr, 3492c1946b6STakashi Iwai &dev_attr_legacy_ch5_ce_count.attr.attr, 350bba14295SBorislav Petkov &dev_attr_legacy_ch6_ce_count.attr.attr, 351bba14295SBorislav Petkov &dev_attr_legacy_ch7_ce_count.attr.attr, 3522c1946b6STakashi Iwai NULL 3532c1946b6STakashi Iwai }; 3542c1946b6STakashi Iwai 3552c1946b6STakashi Iwai static umode_t csrow_dev_is_visible(struct kobject *kobj, 3562c1946b6STakashi Iwai struct attribute *attr, int idx) 3572c1946b6STakashi Iwai { 3582c1946b6STakashi Iwai struct device *dev = kobj_to_dev(kobj); 3592c1946b6STakashi Iwai struct csrow_info *csrow = container_of(dev, struct csrow_info, dev); 3602c1946b6STakashi Iwai 3612c1946b6STakashi Iwai if (idx >= csrow->nr_channels) 3622c1946b6STakashi Iwai return 0; 363bba14295SBorislav Petkov 364bba14295SBorislav Petkov if (idx >= ARRAY_SIZE(dynamic_csrow_ce_count_attr) - 1) { 365bba14295SBorislav Petkov WARN_ONCE(1, "idx: %d\n", idx); 366bba14295SBorislav Petkov return 0; 367bba14295SBorislav Petkov } 368bba14295SBorislav Petkov 3692c1946b6STakashi Iwai /* Only expose populated DIMMs */ 3702c1946b6STakashi Iwai if (!csrow->channels[idx]->dimm->nr_pages) 3712c1946b6STakashi Iwai return 0; 372bba14295SBorislav Petkov 3732c1946b6STakashi Iwai return attr->mode; 3742c1946b6STakashi Iwai } 3752c1946b6STakashi Iwai 3762c1946b6STakashi Iwai 3772c1946b6STakashi Iwai static const struct attribute_group csrow_dev_dimm_group = { 3782c1946b6STakashi Iwai .attrs = dynamic_csrow_dimm_attr, 3792c1946b6STakashi Iwai .is_visible = csrow_dev_is_visible, 3802c1946b6STakashi Iwai }; 3812c1946b6STakashi Iwai 3822c1946b6STakashi Iwai static const struct attribute_group csrow_dev_ce_count_group = { 3832c1946b6STakashi Iwai .attrs = dynamic_csrow_ce_count_attr, 3842c1946b6STakashi Iwai .is_visible = csrow_dev_is_visible, 3852c1946b6STakashi Iwai }; 3862c1946b6STakashi Iwai 3872c1946b6STakashi Iwai static const struct attribute_group *csrow_dev_groups[] = { 3882c1946b6STakashi Iwai &csrow_dev_dimm_group, 3892c1946b6STakashi Iwai &csrow_dev_ce_count_group, 3902c1946b6STakashi Iwai NULL 3917c9281d7SDouglas Thompson }; 3927c9281d7SDouglas Thompson 393e39f4ea9SMauro Carvalho Chehab static inline int nr_pages_per_csrow(struct csrow_info *csrow) 394e39f4ea9SMauro Carvalho Chehab { 395e39f4ea9SMauro Carvalho Chehab int chan, nr_pages = 0; 396e39f4ea9SMauro Carvalho Chehab 397e39f4ea9SMauro Carvalho Chehab for (chan = 0; chan < csrow->nr_channels; chan++) 398de3910ebSMauro Carvalho Chehab nr_pages += csrow->channels[chan]->dimm->nr_pages; 399e39f4ea9SMauro Carvalho Chehab 400e39f4ea9SMauro Carvalho Chehab return nr_pages; 401e39f4ea9SMauro Carvalho Chehab } 402e39f4ea9SMauro Carvalho Chehab 4037c9281d7SDouglas Thompson /* Create a CSROW object under specifed edac_mc_device */ 4048096cfafSDoug Thompson static int edac_create_csrow_object(struct mem_ctl_info *mci, 405079708b9SDouglas Thompson struct csrow_info *csrow, int index) 4067c9281d7SDouglas Thompson { 407585fb3d9SPan Bian int err; 408585fb3d9SPan Bian 4097a623c03SMauro Carvalho Chehab csrow->dev.type = &csrow_attr_type; 4102c1946b6STakashi Iwai csrow->dev.groups = csrow_dev_groups; 4117a623c03SMauro Carvalho Chehab device_initialize(&csrow->dev); 4127a623c03SMauro Carvalho Chehab csrow->dev.parent = &mci->dev; 413921a6899SBorislav Petkov csrow->mci = mci; 4147a623c03SMauro Carvalho Chehab dev_set_name(&csrow->dev, "csrow%d", index); 4157a623c03SMauro Carvalho Chehab dev_set_drvdata(&csrow->dev, csrow); 4167c9281d7SDouglas Thompson 417956b9ba1SJoe Perches edac_dbg(0, "creating (virtual) csrow node %s\n", 418956b9ba1SJoe Perches dev_name(&csrow->dev)); 4198096cfafSDoug Thompson 420585fb3d9SPan Bian err = device_add(&csrow->dev); 421585fb3d9SPan Bian if (err) 422585fb3d9SPan Bian put_device(&csrow->dev); 423585fb3d9SPan Bian 424585fb3d9SPan Bian return err; 4257c9281d7SDouglas Thompson } 4267c9281d7SDouglas Thompson 4277a623c03SMauro Carvalho Chehab /* Create a CSROW object under specifed edac_mc_device */ 4287a623c03SMauro Carvalho Chehab static int edac_create_csrow_objects(struct mem_ctl_info *mci) 4297a623c03SMauro Carvalho Chehab { 4302c1946b6STakashi Iwai int err, i; 4317a623c03SMauro Carvalho Chehab struct csrow_info *csrow; 4327c9281d7SDouglas Thompson 4337a623c03SMauro Carvalho Chehab for (i = 0; i < mci->nr_csrows; i++) { 434de3910ebSMauro Carvalho Chehab csrow = mci->csrows[i]; 435e39f4ea9SMauro Carvalho Chehab if (!nr_pages_per_csrow(csrow)) 436e39f4ea9SMauro Carvalho Chehab continue; 437de3910ebSMauro Carvalho Chehab err = edac_create_csrow_object(mci, mci->csrows[i], i); 4383d958823SMauro Carvalho Chehab if (err < 0) { 4393d958823SMauro Carvalho Chehab edac_dbg(1, 4403d958823SMauro Carvalho Chehab "failure: create csrow objects for csrow %d\n", 4413d958823SMauro Carvalho Chehab i); 4427a623c03SMauro Carvalho Chehab goto error; 4437a623c03SMauro Carvalho Chehab } 4443d958823SMauro Carvalho Chehab } 4457a623c03SMauro Carvalho Chehab return 0; 4467a623c03SMauro Carvalho Chehab 4477a623c03SMauro Carvalho Chehab error: 4487a623c03SMauro Carvalho Chehab for (--i; i >= 0; i--) { 449de3910ebSMauro Carvalho Chehab csrow = mci->csrows[i]; 450e39f4ea9SMauro Carvalho Chehab if (!nr_pages_per_csrow(csrow)) 451e39f4ea9SMauro Carvalho Chehab continue; 452de3910ebSMauro Carvalho Chehab put_device(&mci->csrows[i]->dev); 4537a623c03SMauro Carvalho Chehab } 4547a623c03SMauro Carvalho Chehab 4557a623c03SMauro Carvalho Chehab return err; 4567a623c03SMauro Carvalho Chehab } 4577a623c03SMauro Carvalho Chehab 4587a623c03SMauro Carvalho Chehab static void edac_delete_csrow_objects(struct mem_ctl_info *mci) 4597a623c03SMauro Carvalho Chehab { 4602c1946b6STakashi Iwai int i; 4617a623c03SMauro Carvalho Chehab struct csrow_info *csrow; 4627a623c03SMauro Carvalho Chehab 4637a623c03SMauro Carvalho Chehab for (i = mci->nr_csrows - 1; i >= 0; i--) { 464de3910ebSMauro Carvalho Chehab csrow = mci->csrows[i]; 465e39f4ea9SMauro Carvalho Chehab if (!nr_pages_per_csrow(csrow)) 466e39f4ea9SMauro Carvalho Chehab continue; 46744d22e24SLans Zhang device_unregister(&mci->csrows[i]->dev); 4687a623c03SMauro Carvalho Chehab } 4697a623c03SMauro Carvalho Chehab } 47019974710SMauro Carvalho Chehab #endif 47119974710SMauro Carvalho Chehab 47219974710SMauro Carvalho Chehab /* 47319974710SMauro Carvalho Chehab * Per-dimm (or per-rank) devices 47419974710SMauro Carvalho Chehab */ 47519974710SMauro Carvalho Chehab 47619974710SMauro Carvalho Chehab #define to_dimm(k) container_of(k, struct dimm_info, dev) 47719974710SMauro Carvalho Chehab 47819974710SMauro Carvalho Chehab /* show/store functions for DIMM Label attributes */ 47919974710SMauro Carvalho Chehab static ssize_t dimmdev_location_show(struct device *dev, 48019974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 48119974710SMauro Carvalho Chehab { 48219974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 48319974710SMauro Carvalho Chehab 4846e84d359SMauro Carvalho Chehab return edac_dimm_info_location(dimm, data, PAGE_SIZE); 48519974710SMauro Carvalho Chehab } 48619974710SMauro Carvalho Chehab 48719974710SMauro Carvalho Chehab static ssize_t dimmdev_label_show(struct device *dev, 48819974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 48919974710SMauro Carvalho Chehab { 49019974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 49119974710SMauro Carvalho Chehab 49219974710SMauro Carvalho Chehab /* if field has not been initialized, there is nothing to send */ 49319974710SMauro Carvalho Chehab if (!dimm->label[0]) 49419974710SMauro Carvalho Chehab return 0; 49519974710SMauro Carvalho Chehab 4961ea62c59SToshi Kani return snprintf(data, sizeof(dimm->label) + 1, "%s\n", dimm->label); 49719974710SMauro Carvalho Chehab } 49819974710SMauro Carvalho Chehab 49919974710SMauro Carvalho Chehab static ssize_t dimmdev_label_store(struct device *dev, 50019974710SMauro Carvalho Chehab struct device_attribute *mattr, 50119974710SMauro Carvalho Chehab const char *data, 50219974710SMauro Carvalho Chehab size_t count) 50319974710SMauro Carvalho Chehab { 50419974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 505438470b8SToshi Kani size_t copy_count = count; 50619974710SMauro Carvalho Chehab 507438470b8SToshi Kani if (count == 0) 508438470b8SToshi Kani return -EINVAL; 50919974710SMauro Carvalho Chehab 510438470b8SToshi Kani if (data[count - 1] == '\0' || data[count - 1] == '\n') 511438470b8SToshi Kani copy_count -= 1; 51219974710SMauro Carvalho Chehab 513d0c9c930SToshi Kani if (copy_count == 0 || copy_count >= sizeof(dimm->label)) 514438470b8SToshi Kani return -EINVAL; 515438470b8SToshi Kani 516438470b8SToshi Kani strncpy(dimm->label, data, copy_count); 517438470b8SToshi Kani dimm->label[copy_count] = '\0'; 518438470b8SToshi Kani 519438470b8SToshi Kani return count; 52019974710SMauro Carvalho Chehab } 52119974710SMauro Carvalho Chehab 52219974710SMauro Carvalho Chehab static ssize_t dimmdev_size_show(struct device *dev, 52319974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 52419974710SMauro Carvalho Chehab { 52519974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 52619974710SMauro Carvalho Chehab 52719974710SMauro Carvalho Chehab return sprintf(data, "%u\n", PAGES_TO_MiB(dimm->nr_pages)); 52819974710SMauro Carvalho Chehab } 52919974710SMauro Carvalho Chehab 53019974710SMauro Carvalho Chehab static ssize_t dimmdev_mem_type_show(struct device *dev, 53119974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 53219974710SMauro Carvalho Chehab { 53319974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 53419974710SMauro Carvalho Chehab 535d6dd77ebSTony Luck return sprintf(data, "%s\n", edac_mem_types[dimm->mtype]); 53619974710SMauro Carvalho Chehab } 53719974710SMauro Carvalho Chehab 53819974710SMauro Carvalho Chehab static ssize_t dimmdev_dev_type_show(struct device *dev, 53919974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 54019974710SMauro Carvalho Chehab { 54119974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 54219974710SMauro Carvalho Chehab 54319974710SMauro Carvalho Chehab return sprintf(data, "%s\n", dev_types[dimm->dtype]); 54419974710SMauro Carvalho Chehab } 54519974710SMauro Carvalho Chehab 54619974710SMauro Carvalho Chehab static ssize_t dimmdev_edac_mode_show(struct device *dev, 54719974710SMauro Carvalho Chehab struct device_attribute *mattr, 54819974710SMauro Carvalho Chehab char *data) 54919974710SMauro Carvalho Chehab { 55019974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 55119974710SMauro Carvalho Chehab 55219974710SMauro Carvalho Chehab return sprintf(data, "%s\n", edac_caps[dimm->edac_mode]); 55319974710SMauro Carvalho Chehab } 55419974710SMauro Carvalho Chehab 5554fb6fde7SAaron Miller static ssize_t dimmdev_ce_count_show(struct device *dev, 5564fb6fde7SAaron Miller struct device_attribute *mattr, 5574fb6fde7SAaron Miller char *data) 5584fb6fde7SAaron Miller { 5594fb6fde7SAaron Miller struct dimm_info *dimm = to_dimm(dev); 5604fb6fde7SAaron Miller u32 count; 5614fb6fde7SAaron Miller int off; 5624fb6fde7SAaron Miller 5634fb6fde7SAaron Miller off = EDAC_DIMM_OFF(dimm->mci->layers, 5644fb6fde7SAaron Miller dimm->mci->n_layers, 5654fb6fde7SAaron Miller dimm->location[0], 5664fb6fde7SAaron Miller dimm->location[1], 5674fb6fde7SAaron Miller dimm->location[2]); 5684fb6fde7SAaron Miller count = dimm->mci->ce_per_layer[dimm->mci->n_layers-1][off]; 5694fb6fde7SAaron Miller return sprintf(data, "%u\n", count); 5704fb6fde7SAaron Miller } 5714fb6fde7SAaron Miller 5724fb6fde7SAaron Miller static ssize_t dimmdev_ue_count_show(struct device *dev, 5734fb6fde7SAaron Miller struct device_attribute *mattr, 5744fb6fde7SAaron Miller char *data) 5754fb6fde7SAaron Miller { 5764fb6fde7SAaron Miller struct dimm_info *dimm = to_dimm(dev); 5774fb6fde7SAaron Miller u32 count; 5784fb6fde7SAaron Miller int off; 5794fb6fde7SAaron Miller 5804fb6fde7SAaron Miller off = EDAC_DIMM_OFF(dimm->mci->layers, 5814fb6fde7SAaron Miller dimm->mci->n_layers, 5824fb6fde7SAaron Miller dimm->location[0], 5834fb6fde7SAaron Miller dimm->location[1], 5844fb6fde7SAaron Miller dimm->location[2]); 5854fb6fde7SAaron Miller count = dimm->mci->ue_per_layer[dimm->mci->n_layers-1][off]; 5864fb6fde7SAaron Miller return sprintf(data, "%u\n", count); 5874fb6fde7SAaron Miller } 5884fb6fde7SAaron Miller 58919974710SMauro Carvalho Chehab /* dimm/rank attribute files */ 59019974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_label, S_IRUGO | S_IWUSR, 59119974710SMauro Carvalho Chehab dimmdev_label_show, dimmdev_label_store); 59219974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_location, S_IRUGO, dimmdev_location_show, NULL); 59319974710SMauro Carvalho Chehab static DEVICE_ATTR(size, S_IRUGO, dimmdev_size_show, NULL); 59419974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_mem_type, S_IRUGO, dimmdev_mem_type_show, NULL); 59519974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_dev_type, S_IRUGO, dimmdev_dev_type_show, NULL); 59619974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_edac_mode, S_IRUGO, dimmdev_edac_mode_show, NULL); 5974fb6fde7SAaron Miller static DEVICE_ATTR(dimm_ce_count, S_IRUGO, dimmdev_ce_count_show, NULL); 5984fb6fde7SAaron Miller static DEVICE_ATTR(dimm_ue_count, S_IRUGO, dimmdev_ue_count_show, NULL); 59919974710SMauro Carvalho Chehab 60019974710SMauro Carvalho Chehab /* attributes of the dimm<id>/rank<id> object */ 60119974710SMauro Carvalho Chehab static struct attribute *dimm_attrs[] = { 60219974710SMauro Carvalho Chehab &dev_attr_dimm_label.attr, 60319974710SMauro Carvalho Chehab &dev_attr_dimm_location.attr, 60419974710SMauro Carvalho Chehab &dev_attr_size.attr, 60519974710SMauro Carvalho Chehab &dev_attr_dimm_mem_type.attr, 60619974710SMauro Carvalho Chehab &dev_attr_dimm_dev_type.attr, 60719974710SMauro Carvalho Chehab &dev_attr_dimm_edac_mode.attr, 6084fb6fde7SAaron Miller &dev_attr_dimm_ce_count.attr, 6094fb6fde7SAaron Miller &dev_attr_dimm_ue_count.attr, 61019974710SMauro Carvalho Chehab NULL, 61119974710SMauro Carvalho Chehab }; 61219974710SMauro Carvalho Chehab 6131c18be5aSArvind Yadav static const struct attribute_group dimm_attr_grp = { 61419974710SMauro Carvalho Chehab .attrs = dimm_attrs, 61519974710SMauro Carvalho Chehab }; 61619974710SMauro Carvalho Chehab 61719974710SMauro Carvalho Chehab static const struct attribute_group *dimm_attr_groups[] = { 61819974710SMauro Carvalho Chehab &dimm_attr_grp, 61919974710SMauro Carvalho Chehab NULL 62019974710SMauro Carvalho Chehab }; 62119974710SMauro Carvalho Chehab 622de3910ebSMauro Carvalho Chehab static void dimm_attr_release(struct device *dev) 62319974710SMauro Carvalho Chehab { 624de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = container_of(dev, struct dimm_info, dev); 625de3910ebSMauro Carvalho Chehab 626956b9ba1SJoe Perches edac_dbg(1, "Releasing dimm device %s\n", dev_name(dev)); 627de3910ebSMauro Carvalho Chehab kfree(dimm); 62819974710SMauro Carvalho Chehab } 62919974710SMauro Carvalho Chehab 630b2b3e736SBhumika Goyal static const struct device_type dimm_attr_type = { 63119974710SMauro Carvalho Chehab .groups = dimm_attr_groups, 63219974710SMauro Carvalho Chehab .release = dimm_attr_release, 63319974710SMauro Carvalho Chehab }; 63419974710SMauro Carvalho Chehab 63519974710SMauro Carvalho Chehab /* Create a DIMM object under specifed memory controller device */ 63619974710SMauro Carvalho Chehab static int edac_create_dimm_object(struct mem_ctl_info *mci, 63719974710SMauro Carvalho Chehab struct dimm_info *dimm, 63819974710SMauro Carvalho Chehab int index) 63919974710SMauro Carvalho Chehab { 64019974710SMauro Carvalho Chehab int err; 64119974710SMauro Carvalho Chehab dimm->mci = mci; 64219974710SMauro Carvalho Chehab 64319974710SMauro Carvalho Chehab dimm->dev.type = &dimm_attr_type; 64419974710SMauro Carvalho Chehab device_initialize(&dimm->dev); 64519974710SMauro Carvalho Chehab 64619974710SMauro Carvalho Chehab dimm->dev.parent = &mci->dev; 6479713faecSMauro Carvalho Chehab if (mci->csbased) 64819974710SMauro Carvalho Chehab dev_set_name(&dimm->dev, "rank%d", index); 64919974710SMauro Carvalho Chehab else 65019974710SMauro Carvalho Chehab dev_set_name(&dimm->dev, "dimm%d", index); 65119974710SMauro Carvalho Chehab dev_set_drvdata(&dimm->dev, dimm); 65219974710SMauro Carvalho Chehab pm_runtime_forbid(&mci->dev); 65319974710SMauro Carvalho Chehab 65419974710SMauro Carvalho Chehab err = device_add(&dimm->dev); 65519974710SMauro Carvalho Chehab 656956b9ba1SJoe Perches edac_dbg(0, "creating rank/dimm device %s\n", dev_name(&dimm->dev)); 65719974710SMauro Carvalho Chehab 65819974710SMauro Carvalho Chehab return err; 65919974710SMauro Carvalho Chehab } 6607a623c03SMauro Carvalho Chehab 6617a623c03SMauro Carvalho Chehab /* 6627a623c03SMauro Carvalho Chehab * Memory controller device 6637a623c03SMauro Carvalho Chehab */ 6647a623c03SMauro Carvalho Chehab 6657a623c03SMauro Carvalho Chehab #define to_mci(k) container_of(k, struct mem_ctl_info, dev) 6667a623c03SMauro Carvalho Chehab 6677a623c03SMauro Carvalho Chehab static ssize_t mci_reset_counters_store(struct device *dev, 6687a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 6697c9281d7SDouglas Thompson const char *data, size_t count) 6707c9281d7SDouglas Thompson { 6717a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 6727a623c03SMauro Carvalho Chehab int cnt, row, chan, i; 6735926ff50SMauro Carvalho Chehab mci->ue_mc = 0; 6745926ff50SMauro Carvalho Chehab mci->ce_mc = 0; 6757a623c03SMauro Carvalho Chehab mci->ue_noinfo_count = 0; 6767a623c03SMauro Carvalho Chehab mci->ce_noinfo_count = 0; 6777c9281d7SDouglas Thompson 6787c9281d7SDouglas Thompson for (row = 0; row < mci->nr_csrows; row++) { 679de3910ebSMauro Carvalho Chehab struct csrow_info *ri = mci->csrows[row]; 6807c9281d7SDouglas Thompson 6817c9281d7SDouglas Thompson ri->ue_count = 0; 6827c9281d7SDouglas Thompson ri->ce_count = 0; 6837c9281d7SDouglas Thompson 6847c9281d7SDouglas Thompson for (chan = 0; chan < ri->nr_channels; chan++) 685de3910ebSMauro Carvalho Chehab ri->channels[chan]->ce_count = 0; 6867c9281d7SDouglas Thompson } 6877c9281d7SDouglas Thompson 6887a623c03SMauro Carvalho Chehab cnt = 1; 6897a623c03SMauro Carvalho Chehab for (i = 0; i < mci->n_layers; i++) { 6907a623c03SMauro Carvalho Chehab cnt *= mci->layers[i].size; 6917a623c03SMauro Carvalho Chehab memset(mci->ce_per_layer[i], 0, cnt * sizeof(u32)); 6927a623c03SMauro Carvalho Chehab memset(mci->ue_per_layer[i], 0, cnt * sizeof(u32)); 6937a623c03SMauro Carvalho Chehab } 6947a623c03SMauro Carvalho Chehab 6957c9281d7SDouglas Thompson mci->start_time = jiffies; 6967c9281d7SDouglas Thompson return count; 6977c9281d7SDouglas Thompson } 6987c9281d7SDouglas Thompson 69939094443SBorislav Petkov /* Memory scrubbing interface: 70039094443SBorislav Petkov * 70139094443SBorislav Petkov * A MC driver can limit the scrubbing bandwidth based on the CPU type. 70239094443SBorislav Petkov * Therefore, ->set_sdram_scrub_rate should be made to return the actual 70339094443SBorislav Petkov * bandwidth that is accepted or 0 when scrubbing is to be disabled. 70439094443SBorislav Petkov * 70539094443SBorislav Petkov * Negative value still means that an error has occurred while setting 70639094443SBorislav Petkov * the scrub rate. 70739094443SBorislav Petkov */ 7087a623c03SMauro Carvalho Chehab static ssize_t mci_sdram_scrub_rate_store(struct device *dev, 7097a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7107c9281d7SDouglas Thompson const char *data, size_t count) 7117c9281d7SDouglas Thompson { 7127a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 713eba042a8SBorislav Petkov unsigned long bandwidth = 0; 71439094443SBorislav Petkov int new_bw = 0; 7157c9281d7SDouglas Thompson 716c7f62fc8SJingoo Han if (kstrtoul(data, 10, &bandwidth) < 0) 717eba042a8SBorislav Petkov return -EINVAL; 718eba042a8SBorislav Petkov 71939094443SBorislav Petkov new_bw = mci->set_sdram_scrub_rate(mci, bandwidth); 7204949603aSMarkus Trippelsdorf if (new_bw < 0) { 7214949603aSMarkus Trippelsdorf edac_printk(KERN_WARNING, EDAC_MC, 7224949603aSMarkus Trippelsdorf "Error setting scrub rate to: %lu\n", bandwidth); 7234949603aSMarkus Trippelsdorf return -EINVAL; 7247c9281d7SDouglas Thompson } 7257c9281d7SDouglas Thompson 7264949603aSMarkus Trippelsdorf return count; 7277c9281d7SDouglas Thompson } 728eba042a8SBorislav Petkov 72939094443SBorislav Petkov /* 73039094443SBorislav Petkov * ->get_sdram_scrub_rate() return value semantics same as above. 73139094443SBorislav Petkov */ 7327a623c03SMauro Carvalho Chehab static ssize_t mci_sdram_scrub_rate_show(struct device *dev, 7337a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7347a623c03SMauro Carvalho Chehab char *data) 73539094443SBorislav Petkov { 7367a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 73739094443SBorislav Petkov int bandwidth = 0; 73839094443SBorislav Petkov 73939094443SBorislav Petkov bandwidth = mci->get_sdram_scrub_rate(mci); 74039094443SBorislav Petkov if (bandwidth < 0) { 741eba042a8SBorislav Petkov edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n"); 74239094443SBorislav Petkov return bandwidth; 743eba042a8SBorislav Petkov } 74439094443SBorislav Petkov 7457c9281d7SDouglas Thompson return sprintf(data, "%d\n", bandwidth); 7467c9281d7SDouglas Thompson } 7477c9281d7SDouglas Thompson 7487c9281d7SDouglas Thompson /* default attribute files for the MCI object */ 7497a623c03SMauro Carvalho Chehab static ssize_t mci_ue_count_show(struct device *dev, 7507a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7517a623c03SMauro Carvalho Chehab char *data) 7527c9281d7SDouglas Thompson { 7537a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7547a623c03SMauro Carvalho Chehab 7555926ff50SMauro Carvalho Chehab return sprintf(data, "%d\n", mci->ue_mc); 7567c9281d7SDouglas Thompson } 7577c9281d7SDouglas Thompson 7587a623c03SMauro Carvalho Chehab static ssize_t mci_ce_count_show(struct device *dev, 7597a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7607a623c03SMauro Carvalho Chehab char *data) 7617c9281d7SDouglas Thompson { 7627a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7637a623c03SMauro Carvalho Chehab 7645926ff50SMauro Carvalho Chehab return sprintf(data, "%d\n", mci->ce_mc); 7657c9281d7SDouglas Thompson } 7667c9281d7SDouglas Thompson 7677a623c03SMauro Carvalho Chehab static ssize_t mci_ce_noinfo_show(struct device *dev, 7687a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7697a623c03SMauro Carvalho Chehab char *data) 7707c9281d7SDouglas Thompson { 7717a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7727a623c03SMauro Carvalho Chehab 7737c9281d7SDouglas Thompson return sprintf(data, "%d\n", mci->ce_noinfo_count); 7747c9281d7SDouglas Thompson } 7757c9281d7SDouglas Thompson 7767a623c03SMauro Carvalho Chehab static ssize_t mci_ue_noinfo_show(struct device *dev, 7777a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7787a623c03SMauro Carvalho Chehab char *data) 7797c9281d7SDouglas Thompson { 7807a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7817a623c03SMauro Carvalho Chehab 7827c9281d7SDouglas Thompson return sprintf(data, "%d\n", mci->ue_noinfo_count); 7837c9281d7SDouglas Thompson } 7847c9281d7SDouglas Thompson 7857a623c03SMauro Carvalho Chehab static ssize_t mci_seconds_show(struct device *dev, 7867a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7877a623c03SMauro Carvalho Chehab char *data) 7887c9281d7SDouglas Thompson { 7897a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7907a623c03SMauro Carvalho Chehab 7917c9281d7SDouglas Thompson return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ); 7927c9281d7SDouglas Thompson } 7937c9281d7SDouglas Thompson 7947a623c03SMauro Carvalho Chehab static ssize_t mci_ctl_name_show(struct device *dev, 7957a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7967a623c03SMauro Carvalho Chehab char *data) 7977c9281d7SDouglas Thompson { 7987a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7997a623c03SMauro Carvalho Chehab 8007c9281d7SDouglas Thompson return sprintf(data, "%s\n", mci->ctl_name); 8017c9281d7SDouglas Thompson } 8027c9281d7SDouglas Thompson 8037a623c03SMauro Carvalho Chehab static ssize_t mci_size_mb_show(struct device *dev, 8047a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 8057a623c03SMauro Carvalho Chehab char *data) 8067c9281d7SDouglas Thompson { 8077a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 808a895bf8bSMauro Carvalho Chehab int total_pages = 0, csrow_idx, j; 8097c9281d7SDouglas Thompson 810a895bf8bSMauro Carvalho Chehab for (csrow_idx = 0; csrow_idx < mci->nr_csrows; csrow_idx++) { 811de3910ebSMauro Carvalho Chehab struct csrow_info *csrow = mci->csrows[csrow_idx]; 8127c9281d7SDouglas Thompson 813a895bf8bSMauro Carvalho Chehab for (j = 0; j < csrow->nr_channels; j++) { 814de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = csrow->channels[j]->dimm; 8157c9281d7SDouglas Thompson 816a895bf8bSMauro Carvalho Chehab total_pages += dimm->nr_pages; 817a895bf8bSMauro Carvalho Chehab } 8187c9281d7SDouglas Thompson } 8197c9281d7SDouglas Thompson 8207c9281d7SDouglas Thompson return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages)); 8217c9281d7SDouglas Thompson } 8227c9281d7SDouglas Thompson 8238ad6c78aSMauro Carvalho Chehab static ssize_t mci_max_location_show(struct device *dev, 8248ad6c78aSMauro Carvalho Chehab struct device_attribute *mattr, 8258ad6c78aSMauro Carvalho Chehab char *data) 8268ad6c78aSMauro Carvalho Chehab { 8278ad6c78aSMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 8288ad6c78aSMauro Carvalho Chehab int i; 8298ad6c78aSMauro Carvalho Chehab char *p = data; 8308ad6c78aSMauro Carvalho Chehab 8318ad6c78aSMauro Carvalho Chehab for (i = 0; i < mci->n_layers; i++) { 8328ad6c78aSMauro Carvalho Chehab p += sprintf(p, "%s %d ", 8338ad6c78aSMauro Carvalho Chehab edac_layer_name[mci->layers[i].type], 8348ad6c78aSMauro Carvalho Chehab mci->layers[i].size - 1); 8358ad6c78aSMauro Carvalho Chehab } 8368ad6c78aSMauro Carvalho Chehab 8378ad6c78aSMauro Carvalho Chehab return p - data; 8388ad6c78aSMauro Carvalho Chehab } 8398ad6c78aSMauro Carvalho Chehab 8407c9281d7SDouglas Thompson /* default Control file */ 841f11135d8SBorislav Petkov static DEVICE_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store); 8427c9281d7SDouglas Thompson 8437c9281d7SDouglas Thompson /* default Attribute files */ 844f11135d8SBorislav Petkov static DEVICE_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL); 845f11135d8SBorislav Petkov static DEVICE_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL); 846f11135d8SBorislav Petkov static DEVICE_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL); 847f11135d8SBorislav Petkov static DEVICE_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL); 848f11135d8SBorislav Petkov static DEVICE_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL); 849f11135d8SBorislav Petkov static DEVICE_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL); 850f11135d8SBorislav Petkov static DEVICE_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL); 851f11135d8SBorislav Petkov static DEVICE_ATTR(max_location, S_IRUGO, mci_max_location_show, NULL); 8527c9281d7SDouglas Thompson 8537c9281d7SDouglas Thompson /* memory scrubber attribute file */ 854628ea92fSBen Dooks static DEVICE_ATTR(sdram_scrub_rate, 0, mci_sdram_scrub_rate_show, 8552c1946b6STakashi Iwai mci_sdram_scrub_rate_store); /* umode set later in is_visible */ 8567c9281d7SDouglas Thompson 8577a623c03SMauro Carvalho Chehab static struct attribute *mci_attrs[] = { 8587a623c03SMauro Carvalho Chehab &dev_attr_reset_counters.attr, 8597a623c03SMauro Carvalho Chehab &dev_attr_mc_name.attr, 8607a623c03SMauro Carvalho Chehab &dev_attr_size_mb.attr, 8617a623c03SMauro Carvalho Chehab &dev_attr_seconds_since_reset.attr, 8627a623c03SMauro Carvalho Chehab &dev_attr_ue_noinfo_count.attr, 8637a623c03SMauro Carvalho Chehab &dev_attr_ce_noinfo_count.attr, 8647a623c03SMauro Carvalho Chehab &dev_attr_ue_count.attr, 8657a623c03SMauro Carvalho Chehab &dev_attr_ce_count.attr, 8668ad6c78aSMauro Carvalho Chehab &dev_attr_max_location.attr, 8672c1946b6STakashi Iwai &dev_attr_sdram_scrub_rate.attr, 8687c9281d7SDouglas Thompson NULL 8697c9281d7SDouglas Thompson }; 8707c9281d7SDouglas Thompson 8712c1946b6STakashi Iwai static umode_t mci_attr_is_visible(struct kobject *kobj, 8722c1946b6STakashi Iwai struct attribute *attr, int idx) 8732c1946b6STakashi Iwai { 8742c1946b6STakashi Iwai struct device *dev = kobj_to_dev(kobj); 8752c1946b6STakashi Iwai struct mem_ctl_info *mci = to_mci(dev); 8762c1946b6STakashi Iwai umode_t mode = 0; 8772c1946b6STakashi Iwai 8782c1946b6STakashi Iwai if (attr != &dev_attr_sdram_scrub_rate.attr) 8792c1946b6STakashi Iwai return attr->mode; 8802c1946b6STakashi Iwai if (mci->get_sdram_scrub_rate) 8812c1946b6STakashi Iwai mode |= S_IRUGO; 8822c1946b6STakashi Iwai if (mci->set_sdram_scrub_rate) 8832c1946b6STakashi Iwai mode |= S_IWUSR; 8842c1946b6STakashi Iwai return mode; 8852c1946b6STakashi Iwai } 8862c1946b6STakashi Iwai 8871c18be5aSArvind Yadav static const struct attribute_group mci_attr_grp = { 8887a623c03SMauro Carvalho Chehab .attrs = mci_attrs, 8892c1946b6STakashi Iwai .is_visible = mci_attr_is_visible, 8907c9281d7SDouglas Thompson }; 8917c9281d7SDouglas Thompson 8927a623c03SMauro Carvalho Chehab static const struct attribute_group *mci_attr_groups[] = { 8937a623c03SMauro Carvalho Chehab &mci_attr_grp, 8947a623c03SMauro Carvalho Chehab NULL 895cc301b3aSMauro Carvalho Chehab }; 896cc301b3aSMauro Carvalho Chehab 897de3910ebSMauro Carvalho Chehab static void mci_attr_release(struct device *dev) 8987a623c03SMauro Carvalho Chehab { 899de3910ebSMauro Carvalho Chehab struct mem_ctl_info *mci = container_of(dev, struct mem_ctl_info, dev); 900de3910ebSMauro Carvalho Chehab 901956b9ba1SJoe Perches edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev)); 902de3910ebSMauro Carvalho Chehab kfree(mci); 9037a623c03SMauro Carvalho Chehab } 9047a623c03SMauro Carvalho Chehab 905b2b3e736SBhumika Goyal static const struct device_type mci_attr_type = { 9067a623c03SMauro Carvalho Chehab .groups = mci_attr_groups, 9077a623c03SMauro Carvalho Chehab .release = mci_attr_release, 908cc301b3aSMauro Carvalho Chehab }; 909cc301b3aSMauro Carvalho Chehab 9107c9281d7SDouglas Thompson /* 9117c9281d7SDouglas Thompson * Create a new Memory Controller kobject instance, 9127c9281d7SDouglas Thompson * mc<id> under the 'mc' directory 9137c9281d7SDouglas Thompson * 9147c9281d7SDouglas Thompson * Return: 9157c9281d7SDouglas Thompson * 0 Success 9167c9281d7SDouglas Thompson * !0 Failure 9177c9281d7SDouglas Thompson */ 9184e8d230dSTakashi Iwai int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, 9194e8d230dSTakashi Iwai const struct attribute_group **groups) 9207c9281d7SDouglas Thompson { 9217a623c03SMauro Carvalho Chehab int i, err; 9227c9281d7SDouglas Thompson 923de3910ebSMauro Carvalho Chehab /* get the /sys/devices/system/edac subsys reference */ 924de3910ebSMauro Carvalho Chehab mci->dev.type = &mci_attr_type; 925de3910ebSMauro Carvalho Chehab device_initialize(&mci->dev); 926de3910ebSMauro Carvalho Chehab 927de3910ebSMauro Carvalho Chehab mci->dev.parent = mci_pdev; 9284e8d230dSTakashi Iwai mci->dev.groups = groups; 929de3910ebSMauro Carvalho Chehab dev_set_name(&mci->dev, "mc%d", mci->mc_idx); 930de3910ebSMauro Carvalho Chehab dev_set_drvdata(&mci->dev, mci); 931de3910ebSMauro Carvalho Chehab pm_runtime_forbid(&mci->dev); 932de3910ebSMauro Carvalho Chehab 933956b9ba1SJoe Perches edac_dbg(0, "creating device %s\n", dev_name(&mci->dev)); 9347a623c03SMauro Carvalho Chehab err = device_add(&mci->dev); 9357a623c03SMauro Carvalho Chehab if (err < 0) { 9363d958823SMauro Carvalho Chehab edac_dbg(1, "failure: create device %s\n", dev_name(&mci->dev)); 937861e6ed6SBorislav Petkov goto out; 9388096cfafSDoug Thompson } 93942a8e397SDouglas Thompson 9407a623c03SMauro Carvalho Chehab /* 9417a623c03SMauro Carvalho Chehab * Create the dimm/rank devices 9427c9281d7SDouglas Thompson */ 9437a623c03SMauro Carvalho Chehab for (i = 0; i < mci->tot_dimms; i++) { 944de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = mci->dimms[i]; 9457a623c03SMauro Carvalho Chehab /* Only expose populated DIMMs */ 9461bf1950cSJunjie Mao if (!dimm->nr_pages) 9477a623c03SMauro Carvalho Chehab continue; 9481bf1950cSJunjie Mao 9497a623c03SMauro Carvalho Chehab #ifdef CONFIG_EDAC_DEBUG 950956b9ba1SJoe Perches edac_dbg(1, "creating dimm%d, located at ", i); 9517a623c03SMauro Carvalho Chehab if (edac_debug_level >= 1) { 9527a623c03SMauro Carvalho Chehab int lay; 9537a623c03SMauro Carvalho Chehab for (lay = 0; lay < mci->n_layers; lay++) 9547a623c03SMauro Carvalho Chehab printk(KERN_CONT "%s %d ", 9557a623c03SMauro Carvalho Chehab edac_layer_name[mci->layers[lay].type], 9567a623c03SMauro Carvalho Chehab dimm->location[lay]); 9577a623c03SMauro Carvalho Chehab printk(KERN_CONT "\n"); 9587c9281d7SDouglas Thompson } 9597a623c03SMauro Carvalho Chehab #endif 96019974710SMauro Carvalho Chehab err = edac_create_dimm_object(mci, dimm, i); 96119974710SMauro Carvalho Chehab if (err) { 962956b9ba1SJoe Perches edac_dbg(1, "failure: create dimm %d obj\n", i); 9631bf1950cSJunjie Mao goto fail_unregister_dimm; 96419974710SMauro Carvalho Chehab } 9657c9281d7SDouglas Thompson } 9667a623c03SMauro Carvalho Chehab 96719974710SMauro Carvalho Chehab #ifdef CONFIG_EDAC_LEGACY_SYSFS 9687a623c03SMauro Carvalho Chehab err = edac_create_csrow_objects(mci); 9697a623c03SMauro Carvalho Chehab if (err < 0) 9701bf1950cSJunjie Mao goto fail_unregister_dimm; 97119974710SMauro Carvalho Chehab #endif 9727c9281d7SDouglas Thompson 9737ac8bf9bSBorislav Petkov edac_create_debugfs_nodes(mci); 9747c9281d7SDouglas Thompson return 0; 9757c9281d7SDouglas Thompson 9761bf1950cSJunjie Mao fail_unregister_dimm: 9777c9281d7SDouglas Thompson for (i--; i >= 0; i--) { 978de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = mci->dimms[i]; 9791bf1950cSJunjie Mao if (!dimm->nr_pages) 9807a623c03SMauro Carvalho Chehab continue; 9811bf1950cSJunjie Mao 98244d22e24SLans Zhang device_unregister(&dimm->dev); 9837c9281d7SDouglas Thompson } 98444d22e24SLans Zhang device_unregister(&mci->dev); 98512e26969SBorislav Petkov 986861e6ed6SBorislav Petkov out: 9877c9281d7SDouglas Thompson return err; 9887c9281d7SDouglas Thompson } 9897c9281d7SDouglas Thompson 9907c9281d7SDouglas Thompson /* 9917c9281d7SDouglas Thompson * remove a Memory Controller instance 9927c9281d7SDouglas Thompson */ 9937c9281d7SDouglas Thompson void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) 9947c9281d7SDouglas Thompson { 9957a623c03SMauro Carvalho Chehab int i; 9967c9281d7SDouglas Thompson 997956b9ba1SJoe Perches edac_dbg(0, "\n"); 9987c9281d7SDouglas Thompson 999452a6bf9SMauro Carvalho Chehab #ifdef CONFIG_EDAC_DEBUG 100030f84a89STan Xiaojun edac_debugfs_remove_recursive(mci->debugfs); 1001452a6bf9SMauro Carvalho Chehab #endif 100219974710SMauro Carvalho Chehab #ifdef CONFIG_EDAC_LEGACY_SYSFS 10037a623c03SMauro Carvalho Chehab edac_delete_csrow_objects(mci); 100419974710SMauro Carvalho Chehab #endif 1005a895bf8bSMauro Carvalho Chehab 10067a623c03SMauro Carvalho Chehab for (i = 0; i < mci->tot_dimms; i++) { 1007de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = mci->dimms[i]; 10087a623c03SMauro Carvalho Chehab if (dimm->nr_pages == 0) 10097a623c03SMauro Carvalho Chehab continue; 1010956b9ba1SJoe Perches edac_dbg(0, "removing device %s\n", dev_name(&dimm->dev)); 101144d22e24SLans Zhang device_unregister(&dimm->dev); 10127c9281d7SDouglas Thompson } 10137c9281d7SDouglas Thompson } 10147c9281d7SDouglas Thompson 10157a623c03SMauro Carvalho Chehab void edac_unregister_sysfs(struct mem_ctl_info *mci) 10168096cfafSDoug Thompson { 1017956b9ba1SJoe Perches edac_dbg(1, "Unregistering device %s\n", dev_name(&mci->dev)); 101844d22e24SLans Zhang device_unregister(&mci->dev); 10197a623c03SMauro Carvalho Chehab } 10208096cfafSDoug Thompson 1021de3910ebSMauro Carvalho Chehab static void mc_attr_release(struct device *dev) 10227a623c03SMauro Carvalho Chehab { 1023de3910ebSMauro Carvalho Chehab /* 1024de3910ebSMauro Carvalho Chehab * There's no container structure here, as this is just the mci 1025de3910ebSMauro Carvalho Chehab * parent device, used to create the /sys/devices/mc sysfs node. 1026de3910ebSMauro Carvalho Chehab * So, there are no attributes on it. 1027de3910ebSMauro Carvalho Chehab */ 1028956b9ba1SJoe Perches edac_dbg(1, "Releasing device %s\n", dev_name(dev)); 1029de3910ebSMauro Carvalho Chehab kfree(dev); 10307a623c03SMauro Carvalho Chehab } 10317a623c03SMauro Carvalho Chehab 1032b2b3e736SBhumika Goyal static const struct device_type mc_attr_type = { 10337a623c03SMauro Carvalho Chehab .release = mc_attr_release, 10347a623c03SMauro Carvalho Chehab }; 10357a623c03SMauro Carvalho Chehab /* 10367a623c03SMauro Carvalho Chehab * Init/exit code for the module. Basically, creates/removes /sys/class/rc 10377a623c03SMauro Carvalho Chehab */ 10387a623c03SMauro Carvalho Chehab int __init edac_mc_sysfs_init(void) 10397a623c03SMauro Carvalho Chehab { 10407a623c03SMauro Carvalho Chehab int err; 10418096cfafSDoug Thompson 1042de3910ebSMauro Carvalho Chehab mci_pdev = kzalloc(sizeof(*mci_pdev), GFP_KERNEL); 10432d56b109SDenis Kirjanov if (!mci_pdev) { 10442d56b109SDenis Kirjanov err = -ENOMEM; 1045733476cfSBorislav Petkov goto out; 10462d56b109SDenis Kirjanov } 10478096cfafSDoug Thompson 1048d4538000SBorislav Petkov mci_pdev->bus = edac_get_sysfs_subsys(); 1049de3910ebSMauro Carvalho Chehab mci_pdev->type = &mc_attr_type; 1050de3910ebSMauro Carvalho Chehab device_initialize(mci_pdev); 1051de3910ebSMauro Carvalho Chehab dev_set_name(mci_pdev, "mc"); 1052de3910ebSMauro Carvalho Chehab 1053de3910ebSMauro Carvalho Chehab err = device_add(mci_pdev); 10547a623c03SMauro Carvalho Chehab if (err < 0) 10554708aa85SJohan Hovold goto out_put_device; 10568096cfafSDoug Thompson 1057956b9ba1SJoe Perches edac_dbg(0, "device %s created\n", dev_name(mci_pdev)); 1058de3910ebSMauro Carvalho Chehab 10598096cfafSDoug Thompson return 0; 10602d56b109SDenis Kirjanov 10614708aa85SJohan Hovold out_put_device: 10624708aa85SJohan Hovold put_device(mci_pdev); 10632d56b109SDenis Kirjanov out: 10642d56b109SDenis Kirjanov return err; 10658096cfafSDoug Thompson } 10668096cfafSDoug Thompson 1067c6b97bcfSAlexey Khoroshilov void edac_mc_sysfs_exit(void) 10688096cfafSDoug Thompson { 106944d22e24SLans Zhang device_unregister(mci_pdev); 10708096cfafSDoug Thompson } 1071