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 { 4077a623c03SMauro Carvalho Chehab csrow->dev.type = &csrow_attr_type; 4082c1946b6STakashi Iwai csrow->dev.groups = csrow_dev_groups; 4097a623c03SMauro Carvalho Chehab device_initialize(&csrow->dev); 4107a623c03SMauro Carvalho Chehab csrow->dev.parent = &mci->dev; 411921a6899SBorislav Petkov csrow->mci = mci; 4127a623c03SMauro Carvalho Chehab dev_set_name(&csrow->dev, "csrow%d", index); 4137a623c03SMauro Carvalho Chehab dev_set_drvdata(&csrow->dev, csrow); 4147c9281d7SDouglas Thompson 415956b9ba1SJoe Perches edac_dbg(0, "creating (virtual) csrow node %s\n", 416956b9ba1SJoe Perches dev_name(&csrow->dev)); 4178096cfafSDoug Thompson 4182c1946b6STakashi Iwai return device_add(&csrow->dev); 4197c9281d7SDouglas Thompson } 4207c9281d7SDouglas Thompson 4217a623c03SMauro Carvalho Chehab /* Create a CSROW object under specifed edac_mc_device */ 4227a623c03SMauro Carvalho Chehab static int edac_create_csrow_objects(struct mem_ctl_info *mci) 4237a623c03SMauro Carvalho Chehab { 4242c1946b6STakashi Iwai int err, i; 4257a623c03SMauro Carvalho Chehab struct csrow_info *csrow; 4267c9281d7SDouglas Thompson 4277a623c03SMauro Carvalho Chehab for (i = 0; i < mci->nr_csrows; i++) { 428de3910ebSMauro Carvalho Chehab csrow = mci->csrows[i]; 429e39f4ea9SMauro Carvalho Chehab if (!nr_pages_per_csrow(csrow)) 430e39f4ea9SMauro Carvalho Chehab continue; 431de3910ebSMauro Carvalho Chehab err = edac_create_csrow_object(mci, mci->csrows[i], i); 4323d958823SMauro Carvalho Chehab if (err < 0) { 4333d958823SMauro Carvalho Chehab edac_dbg(1, 4343d958823SMauro Carvalho Chehab "failure: create csrow objects for csrow %d\n", 4353d958823SMauro Carvalho Chehab i); 4367a623c03SMauro Carvalho Chehab goto error; 4377a623c03SMauro Carvalho Chehab } 4383d958823SMauro Carvalho Chehab } 4397a623c03SMauro Carvalho Chehab return 0; 4407a623c03SMauro Carvalho Chehab 4417a623c03SMauro Carvalho Chehab error: 4427a623c03SMauro Carvalho Chehab for (--i; i >= 0; i--) { 443de3910ebSMauro Carvalho Chehab csrow = mci->csrows[i]; 444e39f4ea9SMauro Carvalho Chehab if (!nr_pages_per_csrow(csrow)) 445e39f4ea9SMauro Carvalho Chehab continue; 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 { 4542c1946b6STakashi Iwai int i; 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; 46144d22e24SLans Zhang device_unregister(&mci->csrows[i]->dev); 4627a623c03SMauro Carvalho Chehab } 4637a623c03SMauro Carvalho Chehab } 46419974710SMauro Carvalho Chehab #endif 46519974710SMauro Carvalho Chehab 46619974710SMauro Carvalho Chehab /* 46719974710SMauro Carvalho Chehab * Per-dimm (or per-rank) devices 46819974710SMauro Carvalho Chehab */ 46919974710SMauro Carvalho Chehab 47019974710SMauro Carvalho Chehab #define to_dimm(k) container_of(k, struct dimm_info, dev) 47119974710SMauro Carvalho Chehab 47219974710SMauro Carvalho Chehab /* show/store functions for DIMM Label attributes */ 47319974710SMauro Carvalho Chehab static ssize_t dimmdev_location_show(struct device *dev, 47419974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 47519974710SMauro Carvalho Chehab { 47619974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 47719974710SMauro Carvalho Chehab 4786e84d359SMauro Carvalho Chehab return edac_dimm_info_location(dimm, data, PAGE_SIZE); 47919974710SMauro Carvalho Chehab } 48019974710SMauro Carvalho Chehab 48119974710SMauro Carvalho Chehab static ssize_t dimmdev_label_show(struct device *dev, 48219974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 48319974710SMauro Carvalho Chehab { 48419974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 48519974710SMauro Carvalho Chehab 48619974710SMauro Carvalho Chehab /* if field has not been initialized, there is nothing to send */ 48719974710SMauro Carvalho Chehab if (!dimm->label[0]) 48819974710SMauro Carvalho Chehab return 0; 48919974710SMauro Carvalho Chehab 4901ea62c59SToshi Kani return snprintf(data, sizeof(dimm->label) + 1, "%s\n", dimm->label); 49119974710SMauro Carvalho Chehab } 49219974710SMauro Carvalho Chehab 49319974710SMauro Carvalho Chehab static ssize_t dimmdev_label_store(struct device *dev, 49419974710SMauro Carvalho Chehab struct device_attribute *mattr, 49519974710SMauro Carvalho Chehab const char *data, 49619974710SMauro Carvalho Chehab size_t count) 49719974710SMauro Carvalho Chehab { 49819974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 499438470b8SToshi Kani size_t copy_count = count; 50019974710SMauro Carvalho Chehab 501438470b8SToshi Kani if (count == 0) 502438470b8SToshi Kani return -EINVAL; 50319974710SMauro Carvalho Chehab 504438470b8SToshi Kani if (data[count - 1] == '\0' || data[count - 1] == '\n') 505438470b8SToshi Kani copy_count -= 1; 50619974710SMauro Carvalho Chehab 507d0c9c930SToshi Kani if (copy_count == 0 || copy_count >= sizeof(dimm->label)) 508438470b8SToshi Kani return -EINVAL; 509438470b8SToshi Kani 510438470b8SToshi Kani strncpy(dimm->label, data, copy_count); 511438470b8SToshi Kani dimm->label[copy_count] = '\0'; 512438470b8SToshi Kani 513438470b8SToshi Kani return count; 51419974710SMauro Carvalho Chehab } 51519974710SMauro Carvalho Chehab 51619974710SMauro Carvalho Chehab static ssize_t dimmdev_size_show(struct device *dev, 51719974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 51819974710SMauro Carvalho Chehab { 51919974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 52019974710SMauro Carvalho Chehab 52119974710SMauro Carvalho Chehab return sprintf(data, "%u\n", PAGES_TO_MiB(dimm->nr_pages)); 52219974710SMauro Carvalho Chehab } 52319974710SMauro Carvalho Chehab 52419974710SMauro Carvalho Chehab static ssize_t dimmdev_mem_type_show(struct device *dev, 52519974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 52619974710SMauro Carvalho Chehab { 52719974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 52819974710SMauro Carvalho Chehab 529d6dd77ebSTony Luck return sprintf(data, "%s\n", edac_mem_types[dimm->mtype]); 53019974710SMauro Carvalho Chehab } 53119974710SMauro Carvalho Chehab 53219974710SMauro Carvalho Chehab static ssize_t dimmdev_dev_type_show(struct device *dev, 53319974710SMauro Carvalho Chehab struct device_attribute *mattr, char *data) 53419974710SMauro Carvalho Chehab { 53519974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 53619974710SMauro Carvalho Chehab 53719974710SMauro Carvalho Chehab return sprintf(data, "%s\n", dev_types[dimm->dtype]); 53819974710SMauro Carvalho Chehab } 53919974710SMauro Carvalho Chehab 54019974710SMauro Carvalho Chehab static ssize_t dimmdev_edac_mode_show(struct device *dev, 54119974710SMauro Carvalho Chehab struct device_attribute *mattr, 54219974710SMauro Carvalho Chehab char *data) 54319974710SMauro Carvalho Chehab { 54419974710SMauro Carvalho Chehab struct dimm_info *dimm = to_dimm(dev); 54519974710SMauro Carvalho Chehab 54619974710SMauro Carvalho Chehab return sprintf(data, "%s\n", edac_caps[dimm->edac_mode]); 54719974710SMauro Carvalho Chehab } 54819974710SMauro Carvalho Chehab 5494fb6fde7SAaron Miller static ssize_t dimmdev_ce_count_show(struct device *dev, 5504fb6fde7SAaron Miller struct device_attribute *mattr, 5514fb6fde7SAaron Miller char *data) 5524fb6fde7SAaron Miller { 5534fb6fde7SAaron Miller struct dimm_info *dimm = to_dimm(dev); 5544fb6fde7SAaron Miller u32 count; 5554fb6fde7SAaron Miller int off; 5564fb6fde7SAaron Miller 5574fb6fde7SAaron Miller off = EDAC_DIMM_OFF(dimm->mci->layers, 5584fb6fde7SAaron Miller dimm->mci->n_layers, 5594fb6fde7SAaron Miller dimm->location[0], 5604fb6fde7SAaron Miller dimm->location[1], 5614fb6fde7SAaron Miller dimm->location[2]); 5624fb6fde7SAaron Miller count = dimm->mci->ce_per_layer[dimm->mci->n_layers-1][off]; 5634fb6fde7SAaron Miller return sprintf(data, "%u\n", count); 5644fb6fde7SAaron Miller } 5654fb6fde7SAaron Miller 5664fb6fde7SAaron Miller static ssize_t dimmdev_ue_count_show(struct device *dev, 5674fb6fde7SAaron Miller struct device_attribute *mattr, 5684fb6fde7SAaron Miller char *data) 5694fb6fde7SAaron Miller { 5704fb6fde7SAaron Miller struct dimm_info *dimm = to_dimm(dev); 5714fb6fde7SAaron Miller u32 count; 5724fb6fde7SAaron Miller int off; 5734fb6fde7SAaron Miller 5744fb6fde7SAaron Miller off = EDAC_DIMM_OFF(dimm->mci->layers, 5754fb6fde7SAaron Miller dimm->mci->n_layers, 5764fb6fde7SAaron Miller dimm->location[0], 5774fb6fde7SAaron Miller dimm->location[1], 5784fb6fde7SAaron Miller dimm->location[2]); 5794fb6fde7SAaron Miller count = dimm->mci->ue_per_layer[dimm->mci->n_layers-1][off]; 5804fb6fde7SAaron Miller return sprintf(data, "%u\n", count); 5814fb6fde7SAaron Miller } 5824fb6fde7SAaron Miller 58319974710SMauro Carvalho Chehab /* dimm/rank attribute files */ 58419974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_label, S_IRUGO | S_IWUSR, 58519974710SMauro Carvalho Chehab dimmdev_label_show, dimmdev_label_store); 58619974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_location, S_IRUGO, dimmdev_location_show, NULL); 58719974710SMauro Carvalho Chehab static DEVICE_ATTR(size, S_IRUGO, dimmdev_size_show, NULL); 58819974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_mem_type, S_IRUGO, dimmdev_mem_type_show, NULL); 58919974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_dev_type, S_IRUGO, dimmdev_dev_type_show, NULL); 59019974710SMauro Carvalho Chehab static DEVICE_ATTR(dimm_edac_mode, S_IRUGO, dimmdev_edac_mode_show, NULL); 5914fb6fde7SAaron Miller static DEVICE_ATTR(dimm_ce_count, S_IRUGO, dimmdev_ce_count_show, NULL); 5924fb6fde7SAaron Miller static DEVICE_ATTR(dimm_ue_count, S_IRUGO, dimmdev_ue_count_show, NULL); 59319974710SMauro Carvalho Chehab 59419974710SMauro Carvalho Chehab /* attributes of the dimm<id>/rank<id> object */ 59519974710SMauro Carvalho Chehab static struct attribute *dimm_attrs[] = { 59619974710SMauro Carvalho Chehab &dev_attr_dimm_label.attr, 59719974710SMauro Carvalho Chehab &dev_attr_dimm_location.attr, 59819974710SMauro Carvalho Chehab &dev_attr_size.attr, 59919974710SMauro Carvalho Chehab &dev_attr_dimm_mem_type.attr, 60019974710SMauro Carvalho Chehab &dev_attr_dimm_dev_type.attr, 60119974710SMauro Carvalho Chehab &dev_attr_dimm_edac_mode.attr, 6024fb6fde7SAaron Miller &dev_attr_dimm_ce_count.attr, 6034fb6fde7SAaron Miller &dev_attr_dimm_ue_count.attr, 60419974710SMauro Carvalho Chehab NULL, 60519974710SMauro Carvalho Chehab }; 60619974710SMauro Carvalho Chehab 6071c18be5aSArvind Yadav static const struct attribute_group dimm_attr_grp = { 60819974710SMauro Carvalho Chehab .attrs = dimm_attrs, 60919974710SMauro Carvalho Chehab }; 61019974710SMauro Carvalho Chehab 61119974710SMauro Carvalho Chehab static const struct attribute_group *dimm_attr_groups[] = { 61219974710SMauro Carvalho Chehab &dimm_attr_grp, 61319974710SMauro Carvalho Chehab NULL 61419974710SMauro Carvalho Chehab }; 61519974710SMauro Carvalho Chehab 616de3910ebSMauro Carvalho Chehab static void dimm_attr_release(struct device *dev) 61719974710SMauro Carvalho Chehab { 618de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = container_of(dev, struct dimm_info, dev); 619de3910ebSMauro Carvalho Chehab 620956b9ba1SJoe Perches edac_dbg(1, "Releasing dimm device %s\n", dev_name(dev)); 621de3910ebSMauro Carvalho Chehab kfree(dimm); 62219974710SMauro Carvalho Chehab } 62319974710SMauro Carvalho Chehab 624b2b3e736SBhumika Goyal static const struct device_type dimm_attr_type = { 62519974710SMauro Carvalho Chehab .groups = dimm_attr_groups, 62619974710SMauro Carvalho Chehab .release = dimm_attr_release, 62719974710SMauro Carvalho Chehab }; 62819974710SMauro Carvalho Chehab 62919974710SMauro Carvalho Chehab /* Create a DIMM object under specifed memory controller device */ 63019974710SMauro Carvalho Chehab static int edac_create_dimm_object(struct mem_ctl_info *mci, 63119974710SMauro Carvalho Chehab struct dimm_info *dimm, 63219974710SMauro Carvalho Chehab int index) 63319974710SMauro Carvalho Chehab { 63419974710SMauro Carvalho Chehab int err; 63519974710SMauro Carvalho Chehab dimm->mci = mci; 63619974710SMauro Carvalho Chehab 63719974710SMauro Carvalho Chehab dimm->dev.type = &dimm_attr_type; 63819974710SMauro Carvalho Chehab device_initialize(&dimm->dev); 63919974710SMauro Carvalho Chehab 64019974710SMauro Carvalho Chehab dimm->dev.parent = &mci->dev; 6419713faecSMauro Carvalho Chehab if (mci->csbased) 64219974710SMauro Carvalho Chehab dev_set_name(&dimm->dev, "rank%d", index); 64319974710SMauro Carvalho Chehab else 64419974710SMauro Carvalho Chehab dev_set_name(&dimm->dev, "dimm%d", index); 64519974710SMauro Carvalho Chehab dev_set_drvdata(&dimm->dev, dimm); 64619974710SMauro Carvalho Chehab pm_runtime_forbid(&mci->dev); 64719974710SMauro Carvalho Chehab 64819974710SMauro Carvalho Chehab err = device_add(&dimm->dev); 64919974710SMauro Carvalho Chehab 650956b9ba1SJoe Perches edac_dbg(0, "creating rank/dimm device %s\n", dev_name(&dimm->dev)); 65119974710SMauro Carvalho Chehab 65219974710SMauro Carvalho Chehab return err; 65319974710SMauro Carvalho Chehab } 6547a623c03SMauro Carvalho Chehab 6557a623c03SMauro Carvalho Chehab /* 6567a623c03SMauro Carvalho Chehab * Memory controller device 6577a623c03SMauro Carvalho Chehab */ 6587a623c03SMauro Carvalho Chehab 6597a623c03SMauro Carvalho Chehab #define to_mci(k) container_of(k, struct mem_ctl_info, dev) 6607a623c03SMauro Carvalho Chehab 6617a623c03SMauro Carvalho Chehab static ssize_t mci_reset_counters_store(struct device *dev, 6627a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 6637c9281d7SDouglas Thompson const char *data, size_t count) 6647c9281d7SDouglas Thompson { 6657a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 6667a623c03SMauro Carvalho Chehab int cnt, row, chan, i; 6675926ff50SMauro Carvalho Chehab mci->ue_mc = 0; 6685926ff50SMauro Carvalho Chehab mci->ce_mc = 0; 6697a623c03SMauro Carvalho Chehab mci->ue_noinfo_count = 0; 6707a623c03SMauro Carvalho Chehab mci->ce_noinfo_count = 0; 6717c9281d7SDouglas Thompson 6727c9281d7SDouglas Thompson for (row = 0; row < mci->nr_csrows; row++) { 673de3910ebSMauro Carvalho Chehab struct csrow_info *ri = mci->csrows[row]; 6747c9281d7SDouglas Thompson 6757c9281d7SDouglas Thompson ri->ue_count = 0; 6767c9281d7SDouglas Thompson ri->ce_count = 0; 6777c9281d7SDouglas Thompson 6787c9281d7SDouglas Thompson for (chan = 0; chan < ri->nr_channels; chan++) 679de3910ebSMauro Carvalho Chehab ri->channels[chan]->ce_count = 0; 6807c9281d7SDouglas Thompson } 6817c9281d7SDouglas Thompson 6827a623c03SMauro Carvalho Chehab cnt = 1; 6837a623c03SMauro Carvalho Chehab for (i = 0; i < mci->n_layers; i++) { 6847a623c03SMauro Carvalho Chehab cnt *= mci->layers[i].size; 6857a623c03SMauro Carvalho Chehab memset(mci->ce_per_layer[i], 0, cnt * sizeof(u32)); 6867a623c03SMauro Carvalho Chehab memset(mci->ue_per_layer[i], 0, cnt * sizeof(u32)); 6877a623c03SMauro Carvalho Chehab } 6887a623c03SMauro Carvalho Chehab 6897c9281d7SDouglas Thompson mci->start_time = jiffies; 6907c9281d7SDouglas Thompson return count; 6917c9281d7SDouglas Thompson } 6927c9281d7SDouglas Thompson 69339094443SBorislav Petkov /* Memory scrubbing interface: 69439094443SBorislav Petkov * 69539094443SBorislav Petkov * A MC driver can limit the scrubbing bandwidth based on the CPU type. 69639094443SBorislav Petkov * Therefore, ->set_sdram_scrub_rate should be made to return the actual 69739094443SBorislav Petkov * bandwidth that is accepted or 0 when scrubbing is to be disabled. 69839094443SBorislav Petkov * 69939094443SBorislav Petkov * Negative value still means that an error has occurred while setting 70039094443SBorislav Petkov * the scrub rate. 70139094443SBorislav Petkov */ 7027a623c03SMauro Carvalho Chehab static ssize_t mci_sdram_scrub_rate_store(struct device *dev, 7037a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7047c9281d7SDouglas Thompson const char *data, size_t count) 7057c9281d7SDouglas Thompson { 7067a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 707eba042a8SBorislav Petkov unsigned long bandwidth = 0; 70839094443SBorislav Petkov int new_bw = 0; 7097c9281d7SDouglas Thompson 710c7f62fc8SJingoo Han if (kstrtoul(data, 10, &bandwidth) < 0) 711eba042a8SBorislav Petkov return -EINVAL; 712eba042a8SBorislav Petkov 71339094443SBorislav Petkov new_bw = mci->set_sdram_scrub_rate(mci, bandwidth); 7144949603aSMarkus Trippelsdorf if (new_bw < 0) { 7154949603aSMarkus Trippelsdorf edac_printk(KERN_WARNING, EDAC_MC, 7164949603aSMarkus Trippelsdorf "Error setting scrub rate to: %lu\n", bandwidth); 7174949603aSMarkus Trippelsdorf return -EINVAL; 7187c9281d7SDouglas Thompson } 7197c9281d7SDouglas Thompson 7204949603aSMarkus Trippelsdorf return count; 7217c9281d7SDouglas Thompson } 722eba042a8SBorislav Petkov 72339094443SBorislav Petkov /* 72439094443SBorislav Petkov * ->get_sdram_scrub_rate() return value semantics same as above. 72539094443SBorislav Petkov */ 7267a623c03SMauro Carvalho Chehab static ssize_t mci_sdram_scrub_rate_show(struct device *dev, 7277a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7287a623c03SMauro Carvalho Chehab char *data) 72939094443SBorislav Petkov { 7307a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 73139094443SBorislav Petkov int bandwidth = 0; 73239094443SBorislav Petkov 73339094443SBorislav Petkov bandwidth = mci->get_sdram_scrub_rate(mci); 73439094443SBorislav Petkov if (bandwidth < 0) { 735eba042a8SBorislav Petkov edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n"); 73639094443SBorislav Petkov return bandwidth; 737eba042a8SBorislav Petkov } 73839094443SBorislav Petkov 7397c9281d7SDouglas Thompson return sprintf(data, "%d\n", bandwidth); 7407c9281d7SDouglas Thompson } 7417c9281d7SDouglas Thompson 7427c9281d7SDouglas Thompson /* default attribute files for the MCI object */ 7437a623c03SMauro Carvalho Chehab static ssize_t mci_ue_count_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 7495926ff50SMauro Carvalho Chehab return sprintf(data, "%d\n", mci->ue_mc); 7507c9281d7SDouglas Thompson } 7517c9281d7SDouglas Thompson 7527a623c03SMauro Carvalho Chehab static ssize_t mci_ce_count_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 7585926ff50SMauro Carvalho Chehab return sprintf(data, "%d\n", mci->ce_mc); 7597c9281d7SDouglas Thompson } 7607c9281d7SDouglas Thompson 7617a623c03SMauro Carvalho Chehab static ssize_t mci_ce_noinfo_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, "%d\n", mci->ce_noinfo_count); 7687c9281d7SDouglas Thompson } 7697c9281d7SDouglas Thompson 7707a623c03SMauro Carvalho Chehab static ssize_t mci_ue_noinfo_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); 7757a623c03SMauro Carvalho Chehab 7767c9281d7SDouglas Thompson return sprintf(data, "%d\n", mci->ue_noinfo_count); 7777c9281d7SDouglas Thompson } 7787c9281d7SDouglas Thompson 7797a623c03SMauro Carvalho Chehab static ssize_t mci_seconds_show(struct device *dev, 7807a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7817a623c03SMauro Carvalho Chehab char *data) 7827c9281d7SDouglas Thompson { 7837a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7847a623c03SMauro Carvalho Chehab 7857c9281d7SDouglas Thompson return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ); 7867c9281d7SDouglas Thompson } 7877c9281d7SDouglas Thompson 7887a623c03SMauro Carvalho Chehab static ssize_t mci_ctl_name_show(struct device *dev, 7897a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7907a623c03SMauro Carvalho Chehab char *data) 7917c9281d7SDouglas Thompson { 7927a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 7937a623c03SMauro Carvalho Chehab 7947c9281d7SDouglas Thompson return sprintf(data, "%s\n", mci->ctl_name); 7957c9281d7SDouglas Thompson } 7967c9281d7SDouglas Thompson 7977a623c03SMauro Carvalho Chehab static ssize_t mci_size_mb_show(struct device *dev, 7987a623c03SMauro Carvalho Chehab struct device_attribute *mattr, 7997a623c03SMauro Carvalho Chehab char *data) 8007c9281d7SDouglas Thompson { 8017a623c03SMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 802a895bf8bSMauro Carvalho Chehab int total_pages = 0, csrow_idx, j; 8037c9281d7SDouglas Thompson 804a895bf8bSMauro Carvalho Chehab for (csrow_idx = 0; csrow_idx < mci->nr_csrows; csrow_idx++) { 805de3910ebSMauro Carvalho Chehab struct csrow_info *csrow = mci->csrows[csrow_idx]; 8067c9281d7SDouglas Thompson 807a895bf8bSMauro Carvalho Chehab for (j = 0; j < csrow->nr_channels; j++) { 808de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = csrow->channels[j]->dimm; 8097c9281d7SDouglas Thompson 810a895bf8bSMauro Carvalho Chehab total_pages += dimm->nr_pages; 811a895bf8bSMauro Carvalho Chehab } 8127c9281d7SDouglas Thompson } 8137c9281d7SDouglas Thompson 8147c9281d7SDouglas Thompson return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages)); 8157c9281d7SDouglas Thompson } 8167c9281d7SDouglas Thompson 8178ad6c78aSMauro Carvalho Chehab static ssize_t mci_max_location_show(struct device *dev, 8188ad6c78aSMauro Carvalho Chehab struct device_attribute *mattr, 8198ad6c78aSMauro Carvalho Chehab char *data) 8208ad6c78aSMauro Carvalho Chehab { 8218ad6c78aSMauro Carvalho Chehab struct mem_ctl_info *mci = to_mci(dev); 8228ad6c78aSMauro Carvalho Chehab int i; 8238ad6c78aSMauro Carvalho Chehab char *p = data; 8248ad6c78aSMauro Carvalho Chehab 8258ad6c78aSMauro Carvalho Chehab for (i = 0; i < mci->n_layers; i++) { 8268ad6c78aSMauro Carvalho Chehab p += sprintf(p, "%s %d ", 8278ad6c78aSMauro Carvalho Chehab edac_layer_name[mci->layers[i].type], 8288ad6c78aSMauro Carvalho Chehab mci->layers[i].size - 1); 8298ad6c78aSMauro Carvalho Chehab } 8308ad6c78aSMauro Carvalho Chehab 8318ad6c78aSMauro Carvalho Chehab return p - data; 8328ad6c78aSMauro Carvalho Chehab } 8338ad6c78aSMauro Carvalho Chehab 8347c9281d7SDouglas Thompson /* default Control file */ 835f11135d8SBorislav Petkov static DEVICE_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store); 8367c9281d7SDouglas Thompson 8377c9281d7SDouglas Thompson /* default Attribute files */ 838f11135d8SBorislav Petkov static DEVICE_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL); 839f11135d8SBorislav Petkov static DEVICE_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL); 840f11135d8SBorislav Petkov static DEVICE_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL); 841f11135d8SBorislav Petkov static DEVICE_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL); 842f11135d8SBorislav Petkov static DEVICE_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL); 843f11135d8SBorislav Petkov static DEVICE_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL); 844f11135d8SBorislav Petkov static DEVICE_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL); 845f11135d8SBorislav Petkov static DEVICE_ATTR(max_location, S_IRUGO, mci_max_location_show, NULL); 8467c9281d7SDouglas Thompson 8477c9281d7SDouglas Thompson /* memory scrubber attribute file */ 848628ea92fSBen Dooks static DEVICE_ATTR(sdram_scrub_rate, 0, mci_sdram_scrub_rate_show, 8492c1946b6STakashi Iwai mci_sdram_scrub_rate_store); /* umode set later in is_visible */ 8507c9281d7SDouglas Thompson 8517a623c03SMauro Carvalho Chehab static struct attribute *mci_attrs[] = { 8527a623c03SMauro Carvalho Chehab &dev_attr_reset_counters.attr, 8537a623c03SMauro Carvalho Chehab &dev_attr_mc_name.attr, 8547a623c03SMauro Carvalho Chehab &dev_attr_size_mb.attr, 8557a623c03SMauro Carvalho Chehab &dev_attr_seconds_since_reset.attr, 8567a623c03SMauro Carvalho Chehab &dev_attr_ue_noinfo_count.attr, 8577a623c03SMauro Carvalho Chehab &dev_attr_ce_noinfo_count.attr, 8587a623c03SMauro Carvalho Chehab &dev_attr_ue_count.attr, 8597a623c03SMauro Carvalho Chehab &dev_attr_ce_count.attr, 8608ad6c78aSMauro Carvalho Chehab &dev_attr_max_location.attr, 8612c1946b6STakashi Iwai &dev_attr_sdram_scrub_rate.attr, 8627c9281d7SDouglas Thompson NULL 8637c9281d7SDouglas Thompson }; 8647c9281d7SDouglas Thompson 8652c1946b6STakashi Iwai static umode_t mci_attr_is_visible(struct kobject *kobj, 8662c1946b6STakashi Iwai struct attribute *attr, int idx) 8672c1946b6STakashi Iwai { 8682c1946b6STakashi Iwai struct device *dev = kobj_to_dev(kobj); 8692c1946b6STakashi Iwai struct mem_ctl_info *mci = to_mci(dev); 8702c1946b6STakashi Iwai umode_t mode = 0; 8712c1946b6STakashi Iwai 8722c1946b6STakashi Iwai if (attr != &dev_attr_sdram_scrub_rate.attr) 8732c1946b6STakashi Iwai return attr->mode; 8742c1946b6STakashi Iwai if (mci->get_sdram_scrub_rate) 8752c1946b6STakashi Iwai mode |= S_IRUGO; 8762c1946b6STakashi Iwai if (mci->set_sdram_scrub_rate) 8772c1946b6STakashi Iwai mode |= S_IWUSR; 8782c1946b6STakashi Iwai return mode; 8792c1946b6STakashi Iwai } 8802c1946b6STakashi Iwai 8811c18be5aSArvind Yadav static const struct attribute_group mci_attr_grp = { 8827a623c03SMauro Carvalho Chehab .attrs = mci_attrs, 8832c1946b6STakashi Iwai .is_visible = mci_attr_is_visible, 8847c9281d7SDouglas Thompson }; 8857c9281d7SDouglas Thompson 8867a623c03SMauro Carvalho Chehab static const struct attribute_group *mci_attr_groups[] = { 8877a623c03SMauro Carvalho Chehab &mci_attr_grp, 8887a623c03SMauro Carvalho Chehab NULL 889cc301b3aSMauro Carvalho Chehab }; 890cc301b3aSMauro Carvalho Chehab 891de3910ebSMauro Carvalho Chehab static void mci_attr_release(struct device *dev) 8927a623c03SMauro Carvalho Chehab { 893de3910ebSMauro Carvalho Chehab struct mem_ctl_info *mci = container_of(dev, struct mem_ctl_info, dev); 894de3910ebSMauro Carvalho Chehab 895956b9ba1SJoe Perches edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev)); 896de3910ebSMauro Carvalho Chehab kfree(mci); 8977a623c03SMauro Carvalho Chehab } 8987a623c03SMauro Carvalho Chehab 899b2b3e736SBhumika Goyal static const struct device_type mci_attr_type = { 9007a623c03SMauro Carvalho Chehab .groups = mci_attr_groups, 9017a623c03SMauro Carvalho Chehab .release = mci_attr_release, 902cc301b3aSMauro Carvalho Chehab }; 903cc301b3aSMauro Carvalho Chehab 9047c9281d7SDouglas Thompson /* 9057c9281d7SDouglas Thompson * Create a new Memory Controller kobject instance, 9067c9281d7SDouglas Thompson * mc<id> under the 'mc' directory 9077c9281d7SDouglas Thompson * 9087c9281d7SDouglas Thompson * Return: 9097c9281d7SDouglas Thompson * 0 Success 9107c9281d7SDouglas Thompson * !0 Failure 9117c9281d7SDouglas Thompson */ 9124e8d230dSTakashi Iwai int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, 9134e8d230dSTakashi Iwai const struct attribute_group **groups) 9147c9281d7SDouglas Thompson { 9157a623c03SMauro Carvalho Chehab int i, err; 9167c9281d7SDouglas Thompson 917de3910ebSMauro Carvalho Chehab /* get the /sys/devices/system/edac subsys reference */ 918de3910ebSMauro Carvalho Chehab mci->dev.type = &mci_attr_type; 919de3910ebSMauro Carvalho Chehab device_initialize(&mci->dev); 920de3910ebSMauro Carvalho Chehab 921de3910ebSMauro Carvalho Chehab mci->dev.parent = mci_pdev; 9224e8d230dSTakashi Iwai mci->dev.groups = groups; 923de3910ebSMauro Carvalho Chehab dev_set_name(&mci->dev, "mc%d", mci->mc_idx); 924de3910ebSMauro Carvalho Chehab dev_set_drvdata(&mci->dev, mci); 925de3910ebSMauro Carvalho Chehab pm_runtime_forbid(&mci->dev); 926de3910ebSMauro Carvalho Chehab 927956b9ba1SJoe Perches edac_dbg(0, "creating device %s\n", dev_name(&mci->dev)); 9287a623c03SMauro Carvalho Chehab err = device_add(&mci->dev); 9297a623c03SMauro Carvalho Chehab if (err < 0) { 9303d958823SMauro Carvalho Chehab edac_dbg(1, "failure: create device %s\n", dev_name(&mci->dev)); 931861e6ed6SBorislav Petkov goto out; 9328096cfafSDoug Thompson } 93342a8e397SDouglas Thompson 9347a623c03SMauro Carvalho Chehab /* 9357a623c03SMauro Carvalho Chehab * Create the dimm/rank devices 9367c9281d7SDouglas Thompson */ 9377a623c03SMauro Carvalho Chehab for (i = 0; i < mci->tot_dimms; i++) { 938de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = mci->dimms[i]; 9397a623c03SMauro Carvalho Chehab /* Only expose populated DIMMs */ 9401bf1950cSJunjie Mao if (!dimm->nr_pages) 9417a623c03SMauro Carvalho Chehab continue; 9421bf1950cSJunjie Mao 9437a623c03SMauro Carvalho Chehab #ifdef CONFIG_EDAC_DEBUG 944956b9ba1SJoe Perches edac_dbg(1, "creating dimm%d, located at ", i); 9457a623c03SMauro Carvalho Chehab if (edac_debug_level >= 1) { 9467a623c03SMauro Carvalho Chehab int lay; 9477a623c03SMauro Carvalho Chehab for (lay = 0; lay < mci->n_layers; lay++) 9487a623c03SMauro Carvalho Chehab printk(KERN_CONT "%s %d ", 9497a623c03SMauro Carvalho Chehab edac_layer_name[mci->layers[lay].type], 9507a623c03SMauro Carvalho Chehab dimm->location[lay]); 9517a623c03SMauro Carvalho Chehab printk(KERN_CONT "\n"); 9527c9281d7SDouglas Thompson } 9537a623c03SMauro Carvalho Chehab #endif 95419974710SMauro Carvalho Chehab err = edac_create_dimm_object(mci, dimm, i); 95519974710SMauro Carvalho Chehab if (err) { 956956b9ba1SJoe Perches edac_dbg(1, "failure: create dimm %d obj\n", i); 9571bf1950cSJunjie Mao goto fail_unregister_dimm; 95819974710SMauro Carvalho Chehab } 9597c9281d7SDouglas Thompson } 9607a623c03SMauro Carvalho Chehab 96119974710SMauro Carvalho Chehab #ifdef CONFIG_EDAC_LEGACY_SYSFS 9627a623c03SMauro Carvalho Chehab err = edac_create_csrow_objects(mci); 9637a623c03SMauro Carvalho Chehab if (err < 0) 9641bf1950cSJunjie Mao goto fail_unregister_dimm; 96519974710SMauro Carvalho Chehab #endif 9667c9281d7SDouglas Thompson 9677ac8bf9bSBorislav Petkov edac_create_debugfs_nodes(mci); 9687c9281d7SDouglas Thompson return 0; 9697c9281d7SDouglas Thompson 9701bf1950cSJunjie Mao fail_unregister_dimm: 9717c9281d7SDouglas Thompson for (i--; i >= 0; i--) { 972de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = mci->dimms[i]; 9731bf1950cSJunjie Mao if (!dimm->nr_pages) 9747a623c03SMauro Carvalho Chehab continue; 9751bf1950cSJunjie Mao 97644d22e24SLans Zhang device_unregister(&dimm->dev); 9777c9281d7SDouglas Thompson } 97844d22e24SLans Zhang device_unregister(&mci->dev); 97912e26969SBorislav Petkov 980861e6ed6SBorislav Petkov out: 9817c9281d7SDouglas Thompson return err; 9827c9281d7SDouglas Thompson } 9837c9281d7SDouglas Thompson 9847c9281d7SDouglas Thompson /* 9857c9281d7SDouglas Thompson * remove a Memory Controller instance 9867c9281d7SDouglas Thompson */ 9877c9281d7SDouglas Thompson void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) 9887c9281d7SDouglas Thompson { 9897a623c03SMauro Carvalho Chehab int i; 9907c9281d7SDouglas Thompson 991956b9ba1SJoe Perches edac_dbg(0, "\n"); 9927c9281d7SDouglas Thompson 993452a6bf9SMauro Carvalho Chehab #ifdef CONFIG_EDAC_DEBUG 99430f84a89STan Xiaojun edac_debugfs_remove_recursive(mci->debugfs); 995452a6bf9SMauro Carvalho Chehab #endif 99619974710SMauro Carvalho Chehab #ifdef CONFIG_EDAC_LEGACY_SYSFS 9977a623c03SMauro Carvalho Chehab edac_delete_csrow_objects(mci); 99819974710SMauro Carvalho Chehab #endif 999a895bf8bSMauro Carvalho Chehab 10007a623c03SMauro Carvalho Chehab for (i = 0; i < mci->tot_dimms; i++) { 1001de3910ebSMauro Carvalho Chehab struct dimm_info *dimm = mci->dimms[i]; 10027a623c03SMauro Carvalho Chehab if (dimm->nr_pages == 0) 10037a623c03SMauro Carvalho Chehab continue; 1004956b9ba1SJoe Perches edac_dbg(0, "removing device %s\n", dev_name(&dimm->dev)); 100544d22e24SLans Zhang device_unregister(&dimm->dev); 10067c9281d7SDouglas Thompson } 10077c9281d7SDouglas Thompson } 10087c9281d7SDouglas Thompson 10097a623c03SMauro Carvalho Chehab void edac_unregister_sysfs(struct mem_ctl_info *mci) 10108096cfafSDoug Thompson { 1011956b9ba1SJoe Perches edac_dbg(1, "Unregistering device %s\n", dev_name(&mci->dev)); 101244d22e24SLans Zhang device_unregister(&mci->dev); 10137a623c03SMauro Carvalho Chehab } 10148096cfafSDoug Thompson 1015de3910ebSMauro Carvalho Chehab static void mc_attr_release(struct device *dev) 10167a623c03SMauro Carvalho Chehab { 1017de3910ebSMauro Carvalho Chehab /* 1018de3910ebSMauro Carvalho Chehab * There's no container structure here, as this is just the mci 1019de3910ebSMauro Carvalho Chehab * parent device, used to create the /sys/devices/mc sysfs node. 1020de3910ebSMauro Carvalho Chehab * So, there are no attributes on it. 1021de3910ebSMauro Carvalho Chehab */ 1022956b9ba1SJoe Perches edac_dbg(1, "Releasing device %s\n", dev_name(dev)); 1023de3910ebSMauro Carvalho Chehab kfree(dev); 10247a623c03SMauro Carvalho Chehab } 10257a623c03SMauro Carvalho Chehab 1026b2b3e736SBhumika Goyal static const struct device_type mc_attr_type = { 10277a623c03SMauro Carvalho Chehab .release = mc_attr_release, 10287a623c03SMauro Carvalho Chehab }; 10297a623c03SMauro Carvalho Chehab /* 10307a623c03SMauro Carvalho Chehab * Init/exit code for the module. Basically, creates/removes /sys/class/rc 10317a623c03SMauro Carvalho Chehab */ 10327a623c03SMauro Carvalho Chehab int __init edac_mc_sysfs_init(void) 10337a623c03SMauro Carvalho Chehab { 10347a623c03SMauro Carvalho Chehab int err; 10358096cfafSDoug Thompson 1036de3910ebSMauro Carvalho Chehab mci_pdev = kzalloc(sizeof(*mci_pdev), GFP_KERNEL); 10372d56b109SDenis Kirjanov if (!mci_pdev) { 10382d56b109SDenis Kirjanov err = -ENOMEM; 1039733476cfSBorislav Petkov goto out; 10402d56b109SDenis Kirjanov } 10418096cfafSDoug Thompson 1042d4538000SBorislav Petkov mci_pdev->bus = edac_get_sysfs_subsys(); 1043de3910ebSMauro Carvalho Chehab mci_pdev->type = &mc_attr_type; 1044de3910ebSMauro Carvalho Chehab device_initialize(mci_pdev); 1045de3910ebSMauro Carvalho Chehab dev_set_name(mci_pdev, "mc"); 1046de3910ebSMauro Carvalho Chehab 1047de3910ebSMauro Carvalho Chehab err = device_add(mci_pdev); 10487a623c03SMauro Carvalho Chehab if (err < 0) 10494708aa85SJohan Hovold goto out_put_device; 10508096cfafSDoug Thompson 1051956b9ba1SJoe Perches edac_dbg(0, "device %s created\n", dev_name(mci_pdev)); 1052de3910ebSMauro Carvalho Chehab 10538096cfafSDoug Thompson return 0; 10542d56b109SDenis Kirjanov 10554708aa85SJohan Hovold out_put_device: 10564708aa85SJohan Hovold put_device(mci_pdev); 10572d56b109SDenis Kirjanov out: 10582d56b109SDenis Kirjanov return err; 10598096cfafSDoug Thompson } 10608096cfafSDoug Thompson 1061c6b97bcfSAlexey Khoroshilov void edac_mc_sysfs_exit(void) 10628096cfafSDoug Thompson { 106344d22e24SLans Zhang device_unregister(mci_pdev); 10648096cfafSDoug Thompson } 1065