Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 1 | /* |
| 2 | * edac_mc kernel module |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 3 | * (C) 2005-2007 Linux Networx (http://lnxi.com) |
| 4 | * |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 5 | * This file may be distributed under the terms of the |
| 6 | * GNU General Public License. |
| 7 | * |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 8 | * Written Doug Thompson <norsk5@xmission.com> www.softwarebitmaker.com |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 9 | * |
| 10 | */ |
| 11 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 12 | #include <linux/ctype.h> |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 13 | #include <linux/bug.h> |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 14 | |
Douglas Thompson | 20bcb7a | 2007-07-19 01:49:47 -0700 | [diff] [blame] | 15 | #include "edac_core.h" |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 16 | #include "edac_module.h" |
| 17 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 18 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 19 | /* MC EDAC Controls, setable by module parameter, and sysfs */ |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 20 | static int edac_mc_log_ue = 1; |
| 21 | static int edac_mc_log_ce = 1; |
Douglas Thompson | f044091 | 2007-07-19 01:50:19 -0700 | [diff] [blame] | 22 | static int edac_mc_panic_on_ue; |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 23 | static int edac_mc_poll_msec = 1000; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 24 | |
| 25 | /* Getter functions for above */ |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 26 | int edac_mc_get_log_ue(void) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 27 | { |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 28 | return edac_mc_log_ue; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 29 | } |
| 30 | |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 31 | int edac_mc_get_log_ce(void) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 32 | { |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 33 | return edac_mc_log_ce; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 34 | } |
| 35 | |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 36 | int edac_mc_get_panic_on_ue(void) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 37 | { |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 38 | return edac_mc_panic_on_ue; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 39 | } |
| 40 | |
Dave Jiang | 81d87cb | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 41 | /* this is temporary */ |
| 42 | int edac_mc_get_poll_msec(void) |
| 43 | { |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 44 | return edac_mc_poll_msec; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 45 | } |
| 46 | |
Arthur Jones | 096846e | 2008-07-25 01:49:09 -0700 | [diff] [blame] | 47 | static int edac_set_poll_msec(const char *val, struct kernel_param *kp) |
| 48 | { |
| 49 | long l; |
| 50 | int ret; |
| 51 | |
| 52 | if (!val) |
| 53 | return -EINVAL; |
| 54 | |
| 55 | ret = strict_strtol(val, 0, &l); |
| 56 | if (ret == -EINVAL || ((int)l != l)) |
| 57 | return -EINVAL; |
| 58 | *((int *)kp->arg) = l; |
| 59 | |
| 60 | /* notify edac_mc engine to reset the poll period */ |
| 61 | edac_mc_reset_delay_period(l); |
| 62 | |
| 63 | return 0; |
| 64 | } |
| 65 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 66 | /* Parameter declarations for above */ |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 67 | module_param(edac_mc_panic_on_ue, int, 0644); |
| 68 | MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); |
| 69 | module_param(edac_mc_log_ue, int, 0644); |
| 70 | MODULE_PARM_DESC(edac_mc_log_ue, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 71 | "Log uncorrectable error to console: 0=off 1=on"); |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 72 | module_param(edac_mc_log_ce, int, 0644); |
| 73 | MODULE_PARM_DESC(edac_mc_log_ce, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 74 | "Log correctable error to console: 0=off 1=on"); |
Arthur Jones | 096846e | 2008-07-25 01:49:09 -0700 | [diff] [blame] | 75 | module_param_call(edac_mc_poll_msec, edac_set_poll_msec, param_get_int, |
| 76 | &edac_mc_poll_msec, 0644); |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 77 | MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds"); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 78 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 79 | /* |
| 80 | * various constants for Memory Controllers |
| 81 | */ |
| 82 | static const char *mem_types[] = { |
| 83 | [MEM_EMPTY] = "Empty", |
| 84 | [MEM_RESERVED] = "Reserved", |
| 85 | [MEM_UNKNOWN] = "Unknown", |
| 86 | [MEM_FPM] = "FPM", |
| 87 | [MEM_EDO] = "EDO", |
| 88 | [MEM_BEDO] = "BEDO", |
| 89 | [MEM_SDR] = "Unbuffered-SDR", |
| 90 | [MEM_RDR] = "Registered-SDR", |
| 91 | [MEM_DDR] = "Unbuffered-DDR", |
| 92 | [MEM_RDDR] = "Registered-DDR", |
Dave Jiang | 1a9b85e | 2007-07-19 01:49:38 -0700 | [diff] [blame] | 93 | [MEM_RMBS] = "RMBS", |
| 94 | [MEM_DDR2] = "Unbuffered-DDR2", |
| 95 | [MEM_FB_DDR2] = "FullyBuffered-DDR2", |
Benjamin Herrenschmidt | 1d5f726 | 2008-02-07 00:14:52 -0800 | [diff] [blame] | 96 | [MEM_RDDR2] = "Registered-DDR2", |
| 97 | [MEM_XDR] = "XDR" |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 98 | }; |
| 99 | |
| 100 | static const char *dev_types[] = { |
| 101 | [DEV_UNKNOWN] = "Unknown", |
| 102 | [DEV_X1] = "x1", |
| 103 | [DEV_X2] = "x2", |
| 104 | [DEV_X4] = "x4", |
| 105 | [DEV_X8] = "x8", |
| 106 | [DEV_X16] = "x16", |
| 107 | [DEV_X32] = "x32", |
| 108 | [DEV_X64] = "x64" |
| 109 | }; |
| 110 | |
| 111 | static const char *edac_caps[] = { |
| 112 | [EDAC_UNKNOWN] = "Unknown", |
| 113 | [EDAC_NONE] = "None", |
| 114 | [EDAC_RESERVED] = "Reserved", |
| 115 | [EDAC_PARITY] = "PARITY", |
| 116 | [EDAC_EC] = "EC", |
| 117 | [EDAC_SECDED] = "SECDED", |
| 118 | [EDAC_S2ECD2ED] = "S2ECD2ED", |
| 119 | [EDAC_S4ECD4ED] = "S4ECD4ED", |
| 120 | [EDAC_S8ECD8ED] = "S8ECD8ED", |
| 121 | [EDAC_S16ECD16ED] = "S16ECD16ED" |
| 122 | }; |
| 123 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 124 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 125 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 126 | static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count) |
| 127 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 128 | int *value = (int *)ptr; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 129 | |
| 130 | if (isdigit(*buffer)) |
| 131 | *value = simple_strtoul(buffer, NULL, 0); |
| 132 | |
| 133 | return count; |
| 134 | } |
| 135 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 136 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 137 | /* EDAC sysfs CSROW data structures and methods |
| 138 | */ |
| 139 | |
| 140 | /* Set of more default csrow<id> attribute show/store functions */ |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 141 | static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 142 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 143 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 144 | return sprintf(data, "%u\n", csrow->ue_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 145 | } |
| 146 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 147 | static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 148 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 149 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 150 | return sprintf(data, "%u\n", csrow->ce_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 151 | } |
| 152 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 153 | static ssize_t csrow_size_show(struct csrow_info *csrow, char *data, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 154 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 155 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 156 | return sprintf(data, "%u\n", PAGES_TO_MiB(csrow->nr_pages)); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 157 | } |
| 158 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 159 | static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 160 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 161 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 162 | return sprintf(data, "%s\n", mem_types[csrow->mtype]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 163 | } |
| 164 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 165 | static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 166 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 167 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 168 | return sprintf(data, "%s\n", dev_types[csrow->dtype]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 169 | } |
| 170 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 171 | static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 172 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 173 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 174 | return sprintf(data, "%s\n", edac_caps[csrow->edac_mode]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | /* show/store functions for DIMM Label attributes */ |
| 178 | static ssize_t channel_dimm_label_show(struct csrow_info *csrow, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 179 | char *data, int channel) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 180 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 181 | return snprintf(data, EDAC_MC_LABEL_LEN, "%s", |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 182 | csrow->channels[channel].label); |
| 183 | } |
| 184 | |
| 185 | static ssize_t channel_dimm_label_store(struct csrow_info *csrow, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 186 | const char *data, |
| 187 | size_t count, int channel) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 188 | { |
| 189 | ssize_t max_size = 0; |
| 190 | |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 191 | max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 192 | strncpy(csrow->channels[channel].label, data, max_size); |
| 193 | csrow->channels[channel].label[max_size] = '\0'; |
| 194 | |
| 195 | return max_size; |
| 196 | } |
| 197 | |
| 198 | /* show function for dynamic chX_ce_count attribute */ |
| 199 | static ssize_t channel_ce_count_show(struct csrow_info *csrow, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 200 | char *data, int channel) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 201 | { |
| 202 | return sprintf(data, "%u\n", csrow->channels[channel].ce_count); |
| 203 | } |
| 204 | |
| 205 | /* csrow specific attribute structure */ |
| 206 | struct csrowdev_attribute { |
| 207 | struct attribute attr; |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 208 | ssize_t(*show) (struct csrow_info *, char *, int); |
| 209 | ssize_t(*store) (struct csrow_info *, const char *, size_t, int); |
| 210 | int private; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 211 | }; |
| 212 | |
| 213 | #define to_csrow(k) container_of(k, struct csrow_info, kobj) |
| 214 | #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr) |
| 215 | |
| 216 | /* Set of show/store higher level functions for default csrow attributes */ |
| 217 | static ssize_t csrowdev_show(struct kobject *kobj, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 218 | struct attribute *attr, char *buffer) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 219 | { |
| 220 | struct csrow_info *csrow = to_csrow(kobj); |
| 221 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); |
| 222 | |
| 223 | if (csrowdev_attr->show) |
| 224 | return csrowdev_attr->show(csrow, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 225 | buffer, csrowdev_attr->private); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 226 | return -EIO; |
| 227 | } |
| 228 | |
| 229 | static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 230 | const char *buffer, size_t count) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 231 | { |
| 232 | struct csrow_info *csrow = to_csrow(kobj); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 233 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 234 | |
| 235 | if (csrowdev_attr->store) |
| 236 | return csrowdev_attr->store(csrow, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 237 | buffer, |
| 238 | count, csrowdev_attr->private); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 239 | return -EIO; |
| 240 | } |
| 241 | |
| 242 | static struct sysfs_ops csrowfs_ops = { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 243 | .show = csrowdev_show, |
| 244 | .store = csrowdev_store |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 245 | }; |
| 246 | |
| 247 | #define CSROWDEV_ATTR(_name,_mode,_show,_store,_private) \ |
| 248 | static struct csrowdev_attribute attr_##_name = { \ |
| 249 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 250 | .show = _show, \ |
| 251 | .store = _store, \ |
| 252 | .private = _private, \ |
| 253 | }; |
| 254 | |
| 255 | /* default cwrow<id>/attribute files */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 256 | CSROWDEV_ATTR(size_mb, S_IRUGO, csrow_size_show, NULL, 0); |
| 257 | CSROWDEV_ATTR(dev_type, S_IRUGO, csrow_dev_type_show, NULL, 0); |
| 258 | CSROWDEV_ATTR(mem_type, S_IRUGO, csrow_mem_type_show, NULL, 0); |
| 259 | CSROWDEV_ATTR(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL, 0); |
| 260 | CSROWDEV_ATTR(ue_count, S_IRUGO, csrow_ue_count_show, NULL, 0); |
| 261 | CSROWDEV_ATTR(ce_count, S_IRUGO, csrow_ce_count_show, NULL, 0); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 262 | |
| 263 | /* default attributes of the CSROW<id> object */ |
| 264 | static struct csrowdev_attribute *default_csrow_attr[] = { |
| 265 | &attr_dev_type, |
| 266 | &attr_mem_type, |
| 267 | &attr_edac_mode, |
| 268 | &attr_size_mb, |
| 269 | &attr_ue_count, |
| 270 | &attr_ce_count, |
| 271 | NULL, |
| 272 | }; |
| 273 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 274 | /* possible dynamic channel DIMM Label attribute files */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 275 | CSROWDEV_ATTR(ch0_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 276 | channel_dimm_label_show, channel_dimm_label_store, 0); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 277 | CSROWDEV_ATTR(ch1_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 278 | channel_dimm_label_show, channel_dimm_label_store, 1); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 279 | CSROWDEV_ATTR(ch2_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 280 | channel_dimm_label_show, channel_dimm_label_store, 2); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 281 | CSROWDEV_ATTR(ch3_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 282 | channel_dimm_label_show, channel_dimm_label_store, 3); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 283 | CSROWDEV_ATTR(ch4_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 284 | channel_dimm_label_show, channel_dimm_label_store, 4); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 285 | CSROWDEV_ATTR(ch5_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 286 | channel_dimm_label_show, channel_dimm_label_store, 5); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 287 | |
| 288 | /* Total possible dynamic DIMM Label attribute file table */ |
| 289 | static struct csrowdev_attribute *dynamic_csrow_dimm_attr[] = { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 290 | &attr_ch0_dimm_label, |
| 291 | &attr_ch1_dimm_label, |
| 292 | &attr_ch2_dimm_label, |
| 293 | &attr_ch3_dimm_label, |
| 294 | &attr_ch4_dimm_label, |
| 295 | &attr_ch5_dimm_label |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 296 | }; |
| 297 | |
| 298 | /* possible dynamic channel ce_count attribute files */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 299 | CSROWDEV_ATTR(ch0_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 0); |
| 300 | CSROWDEV_ATTR(ch1_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 1); |
| 301 | CSROWDEV_ATTR(ch2_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 2); |
| 302 | CSROWDEV_ATTR(ch3_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 3); |
| 303 | CSROWDEV_ATTR(ch4_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 4); |
| 304 | CSROWDEV_ATTR(ch5_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 5); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 305 | |
| 306 | /* Total possible dynamic ce_count attribute file table */ |
| 307 | static struct csrowdev_attribute *dynamic_csrow_ce_count_attr[] = { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 308 | &attr_ch0_ce_count, |
| 309 | &attr_ch1_ce_count, |
| 310 | &attr_ch2_ce_count, |
| 311 | &attr_ch3_ce_count, |
| 312 | &attr_ch4_ce_count, |
| 313 | &attr_ch5_ce_count |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 314 | }; |
| 315 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 316 | #define EDAC_NR_CHANNELS 6 |
| 317 | |
| 318 | /* Create dynamic CHANNEL files, indexed by 'chan', under specifed CSROW */ |
| 319 | static int edac_create_channel_files(struct kobject *kobj, int chan) |
| 320 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 321 | int err = -ENODEV; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 322 | |
| 323 | if (chan >= EDAC_NR_CHANNELS) |
| 324 | return err; |
| 325 | |
| 326 | /* create the DIMM label attribute file */ |
| 327 | err = sysfs_create_file(kobj, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 328 | (struct attribute *) |
| 329 | dynamic_csrow_dimm_attr[chan]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 330 | |
| 331 | if (!err) { |
| 332 | /* create the CE Count attribute file */ |
| 333 | err = sysfs_create_file(kobj, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 334 | (struct attribute *) |
| 335 | dynamic_csrow_ce_count_attr[chan]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 336 | } else { |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 337 | debugf1("%s() dimm labels and ce_count files created", |
| 338 | __func__); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | return err; |
| 342 | } |
| 343 | |
| 344 | /* No memory to release for this kobj */ |
| 345 | static void edac_csrow_instance_release(struct kobject *kobj) |
| 346 | { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 347 | struct mem_ctl_info *mci; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 348 | struct csrow_info *cs; |
| 349 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 350 | debugf1("%s()\n", __func__); |
| 351 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 352 | cs = container_of(kobj, struct csrow_info, kobj); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 353 | mci = cs->mci; |
| 354 | |
| 355 | kobject_put(&mci->edac_mci_kobj); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 356 | } |
| 357 | |
| 358 | /* the kobj_type instance for a CSROW */ |
| 359 | static struct kobj_type ktype_csrow = { |
| 360 | .release = edac_csrow_instance_release, |
| 361 | .sysfs_ops = &csrowfs_ops, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 362 | .default_attrs = (struct attribute **)default_csrow_attr, |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 363 | }; |
| 364 | |
| 365 | /* Create a CSROW object under specifed edac_mc_device */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 366 | static int edac_create_csrow_object(struct mem_ctl_info *mci, |
| 367 | struct csrow_info *csrow, int index) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 368 | { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 369 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
| 370 | struct kobject *kobj; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 371 | int chan; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 372 | int err; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 373 | |
| 374 | /* generate ..../edac/mc/mc<id>/csrow<index> */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 375 | memset(&csrow->kobj, 0, sizeof(csrow->kobj)); |
| 376 | csrow->mci = mci; /* include container up link */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 377 | |
| 378 | /* bump the mci instance's kobject's ref count */ |
| 379 | kobj = kobject_get(&mci->edac_mci_kobj); |
| 380 | if (!kobj) { |
| 381 | err = -ENODEV; |
| 382 | goto err_out; |
| 383 | } |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 384 | |
| 385 | /* Instanstiate the csrow object */ |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 386 | err = kobject_init_and_add(&csrow->kobj, &ktype_csrow, kobj_mci, |
| 387 | "csrow%d", index); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 388 | if (err) |
| 389 | goto err_release_top_kobj; |
| 390 | |
| 391 | /* At this point, to release a csrow kobj, one must |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 392 | * call the kobject_put and allow that tear down |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 393 | * to work the releasing |
| 394 | */ |
| 395 | |
| 396 | /* Create the dyanmic attribute files on this csrow, |
| 397 | * namely, the DIMM labels and the channel ce_count |
| 398 | */ |
| 399 | for (chan = 0; chan < csrow->nr_channels; chan++) { |
| 400 | err = edac_create_channel_files(&csrow->kobj, chan); |
| 401 | if (err) { |
| 402 | /* special case the unregister here */ |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 403 | kobject_put(&csrow->kobj); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 404 | goto err_out; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 405 | } |
| 406 | } |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 407 | kobject_uevent(&csrow->kobj, KOBJ_ADD); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 408 | return 0; |
| 409 | |
| 410 | /* error unwind stack */ |
| 411 | err_release_top_kobj: |
| 412 | kobject_put(&mci->edac_mci_kobj); |
| 413 | |
| 414 | err_out: |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 415 | return err; |
| 416 | } |
| 417 | |
| 418 | /* default sysfs methods and data structures for the main MCI kobject */ |
| 419 | |
| 420 | static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 421 | const char *data, size_t count) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 422 | { |
| 423 | int row, chan; |
| 424 | |
| 425 | mci->ue_noinfo_count = 0; |
| 426 | mci->ce_noinfo_count = 0; |
| 427 | mci->ue_count = 0; |
| 428 | mci->ce_count = 0; |
| 429 | |
| 430 | for (row = 0; row < mci->nr_csrows; row++) { |
| 431 | struct csrow_info *ri = &mci->csrows[row]; |
| 432 | |
| 433 | ri->ue_count = 0; |
| 434 | ri->ce_count = 0; |
| 435 | |
| 436 | for (chan = 0; chan < ri->nr_channels; chan++) |
| 437 | ri->channels[chan].ce_count = 0; |
| 438 | } |
| 439 | |
| 440 | mci->start_time = jiffies; |
| 441 | return count; |
| 442 | } |
| 443 | |
| 444 | /* memory scrubbing */ |
| 445 | static ssize_t mci_sdram_scrub_rate_store(struct mem_ctl_info *mci, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 446 | const char *data, size_t count) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 447 | { |
| 448 | u32 bandwidth = -1; |
| 449 | |
| 450 | if (mci->set_sdram_scrub_rate) { |
| 451 | |
| 452 | memctrl_int_store(&bandwidth, data, count); |
| 453 | |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 454 | if (!(*mci->set_sdram_scrub_rate) (mci, &bandwidth)) { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 455 | edac_printk(KERN_DEBUG, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 456 | "Scrub rate set successfully, applied: %d\n", |
| 457 | bandwidth); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 458 | } else { |
| 459 | /* FIXME: error codes maybe? */ |
| 460 | edac_printk(KERN_DEBUG, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 461 | "Scrub rate set FAILED, could not apply: %d\n", |
| 462 | bandwidth); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 463 | } |
| 464 | } else { |
| 465 | /* FIXME: produce "not implemented" ERROR for user-side. */ |
| 466 | edac_printk(KERN_WARNING, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 467 | "Memory scrubbing 'set'control is not implemented!\n"); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 468 | } |
| 469 | return count; |
| 470 | } |
| 471 | |
| 472 | static ssize_t mci_sdram_scrub_rate_show(struct mem_ctl_info *mci, char *data) |
| 473 | { |
| 474 | u32 bandwidth = -1; |
| 475 | |
| 476 | if (mci->get_sdram_scrub_rate) { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 477 | if (!(*mci->get_sdram_scrub_rate) (mci, &bandwidth)) { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 478 | edac_printk(KERN_DEBUG, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 479 | "Scrub rate successfully, fetched: %d\n", |
| 480 | bandwidth); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 481 | } else { |
| 482 | /* FIXME: error codes maybe? */ |
| 483 | edac_printk(KERN_DEBUG, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 484 | "Scrub rate fetch FAILED, got: %d\n", |
| 485 | bandwidth); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 486 | } |
| 487 | } else { |
| 488 | /* FIXME: produce "not implemented" ERROR for user-side. */ |
| 489 | edac_printk(KERN_WARNING, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 490 | "Memory scrubbing 'get' control is not implemented\n"); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 491 | } |
| 492 | return sprintf(data, "%d\n", bandwidth); |
| 493 | } |
| 494 | |
| 495 | /* default attribute files for the MCI object */ |
| 496 | static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data) |
| 497 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 498 | return sprintf(data, "%d\n", mci->ue_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 499 | } |
| 500 | |
| 501 | static ssize_t mci_ce_count_show(struct mem_ctl_info *mci, char *data) |
| 502 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 503 | return sprintf(data, "%d\n", mci->ce_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | static ssize_t mci_ce_noinfo_show(struct mem_ctl_info *mci, char *data) |
| 507 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 508 | return sprintf(data, "%d\n", mci->ce_noinfo_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 509 | } |
| 510 | |
| 511 | static ssize_t mci_ue_noinfo_show(struct mem_ctl_info *mci, char *data) |
| 512 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 513 | return sprintf(data, "%d\n", mci->ue_noinfo_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 514 | } |
| 515 | |
| 516 | static ssize_t mci_seconds_show(struct mem_ctl_info *mci, char *data) |
| 517 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 518 | return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 519 | } |
| 520 | |
| 521 | static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data) |
| 522 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 523 | return sprintf(data, "%s\n", mci->ctl_name); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) |
| 527 | { |
| 528 | int total_pages, csrow_idx; |
| 529 | |
| 530 | for (total_pages = csrow_idx = 0; csrow_idx < mci->nr_csrows; |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 531 | csrow_idx++) { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 532 | struct csrow_info *csrow = &mci->csrows[csrow_idx]; |
| 533 | |
| 534 | if (!csrow->nr_pages) |
| 535 | continue; |
| 536 | |
| 537 | total_pages += csrow->nr_pages; |
| 538 | } |
| 539 | |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 540 | return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages)); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 541 | } |
| 542 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 543 | #define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj) |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 544 | #define to_mcidev_attr(a) container_of(a,struct mcidev_sysfs_attribute,attr) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 545 | |
| 546 | /* MCI show/store functions for top most object */ |
| 547 | static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 548 | char *buffer) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 549 | { |
| 550 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 551 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 552 | |
| 553 | if (mcidev_attr->show) |
| 554 | return mcidev_attr->show(mem_ctl_info, buffer); |
| 555 | |
| 556 | return -EIO; |
| 557 | } |
| 558 | |
| 559 | static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 560 | const char *buffer, size_t count) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 561 | { |
| 562 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 563 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 564 | |
| 565 | if (mcidev_attr->store) |
| 566 | return mcidev_attr->store(mem_ctl_info, buffer, count); |
| 567 | |
| 568 | return -EIO; |
| 569 | } |
| 570 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 571 | /* Intermediate show/store table */ |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 572 | static struct sysfs_ops mci_ops = { |
| 573 | .show = mcidev_show, |
| 574 | .store = mcidev_store |
| 575 | }; |
| 576 | |
| 577 | #define MCIDEV_ATTR(_name,_mode,_show,_store) \ |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 578 | static struct mcidev_sysfs_attribute mci_attr_##_name = { \ |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 579 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 580 | .show = _show, \ |
| 581 | .store = _store, \ |
| 582 | }; |
| 583 | |
| 584 | /* default Control file */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 585 | MCIDEV_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 586 | |
| 587 | /* default Attribute files */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 588 | MCIDEV_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL); |
| 589 | MCIDEV_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL); |
| 590 | MCIDEV_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL); |
| 591 | MCIDEV_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL); |
| 592 | MCIDEV_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL); |
| 593 | MCIDEV_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL); |
| 594 | MCIDEV_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 595 | |
| 596 | /* memory scrubber attribute file */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 597 | MCIDEV_ATTR(sdram_scrub_rate, S_IRUGO | S_IWUSR, mci_sdram_scrub_rate_show, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 598 | mci_sdram_scrub_rate_store); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 599 | |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 600 | static struct mcidev_sysfs_attribute *mci_attr[] = { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 601 | &mci_attr_reset_counters, |
| 602 | &mci_attr_mc_name, |
| 603 | &mci_attr_size_mb, |
| 604 | &mci_attr_seconds_since_reset, |
| 605 | &mci_attr_ue_noinfo_count, |
| 606 | &mci_attr_ce_noinfo_count, |
| 607 | &mci_attr_ue_count, |
| 608 | &mci_attr_ce_count, |
| 609 | &mci_attr_sdram_scrub_rate, |
| 610 | NULL |
| 611 | }; |
| 612 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 613 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 614 | /* |
| 615 | * Release of a MC controlling instance |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 616 | * |
| 617 | * each MC control instance has the following resources upon entry: |
| 618 | * a) a ref count on the top memctl kobj |
| 619 | * b) a ref count on this module |
| 620 | * |
| 621 | * this function must decrement those ref counts and then |
| 622 | * issue a free on the instance's memory |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 623 | */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 624 | static void edac_mci_control_release(struct kobject *kobj) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 625 | { |
| 626 | struct mem_ctl_info *mci; |
| 627 | |
| 628 | mci = to_mci(kobj); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 629 | |
| 630 | debugf0("%s() mci instance idx=%d releasing\n", __func__, mci->mc_idx); |
| 631 | |
| 632 | /* decrement the module ref count */ |
| 633 | module_put(mci->owner); |
| 634 | |
| 635 | /* free the mci instance memory here */ |
| 636 | kfree(mci); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 637 | } |
| 638 | |
| 639 | static struct kobj_type ktype_mci = { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 640 | .release = edac_mci_control_release, |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 641 | .sysfs_ops = &mci_ops, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 642 | .default_attrs = (struct attribute **)mci_attr, |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 643 | }; |
| 644 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 645 | /* EDAC memory controller sysfs kset: |
| 646 | * /sys/devices/system/edac/mc |
| 647 | */ |
Arthur Jones | f9fc82a | 2008-07-25 01:49:11 -0700 | [diff] [blame^] | 648 | static struct kset *mc_kset; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 649 | |
| 650 | /* |
| 651 | * edac_mc_register_sysfs_main_kobj |
| 652 | * |
| 653 | * setups and registers the main kobject for each mci |
| 654 | */ |
| 655 | int edac_mc_register_sysfs_main_kobj(struct mem_ctl_info *mci) |
| 656 | { |
| 657 | struct kobject *kobj_mci; |
| 658 | int err; |
| 659 | |
| 660 | debugf1("%s()\n", __func__); |
| 661 | |
| 662 | kobj_mci = &mci->edac_mci_kobj; |
| 663 | |
| 664 | /* Init the mci's kobject */ |
| 665 | memset(kobj_mci, 0, sizeof(*kobj_mci)); |
| 666 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 667 | /* Record which module 'owns' this control structure |
| 668 | * and bump the ref count of the module |
| 669 | */ |
| 670 | mci->owner = THIS_MODULE; |
| 671 | |
| 672 | /* bump ref count on this module */ |
| 673 | if (!try_module_get(mci->owner)) { |
| 674 | err = -ENODEV; |
| 675 | goto fail_out; |
| 676 | } |
| 677 | |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 678 | /* this instance become part of the mc_kset */ |
Arthur Jones | f9fc82a | 2008-07-25 01:49:11 -0700 | [diff] [blame^] | 679 | kobj_mci->kset = mc_kset; |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 680 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 681 | /* register the mc<id> kobject to the mc_kset */ |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 682 | err = kobject_init_and_add(kobj_mci, &ktype_mci, NULL, |
| 683 | "mc%d", mci->mc_idx); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 684 | if (err) { |
| 685 | debugf1("%s()Failed to register '.../edac/mc%d'\n", |
| 686 | __func__, mci->mc_idx); |
| 687 | goto kobj_reg_fail; |
| 688 | } |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 689 | kobject_uevent(kobj_mci, KOBJ_ADD); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 690 | |
| 691 | /* At this point, to 'free' the control struct, |
| 692 | * edac_mc_unregister_sysfs_main_kobj() must be used |
| 693 | */ |
| 694 | |
| 695 | debugf1("%s() Registered '.../edac/mc%d' kobject\n", |
| 696 | __func__, mci->mc_idx); |
| 697 | |
| 698 | return 0; |
| 699 | |
| 700 | /* Error exit stack */ |
| 701 | |
| 702 | kobj_reg_fail: |
| 703 | module_put(mci->owner); |
| 704 | |
| 705 | fail_out: |
| 706 | return err; |
| 707 | } |
| 708 | |
| 709 | /* |
| 710 | * edac_mc_register_sysfs_main_kobj |
| 711 | * |
| 712 | * tears down and the main mci kobject from the mc_kset |
| 713 | */ |
| 714 | void edac_mc_unregister_sysfs_main_kobj(struct mem_ctl_info *mci) |
| 715 | { |
| 716 | /* delete the kobj from the mc_kset */ |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 717 | kobject_put(&mci->edac_mci_kobj); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 718 | } |
| 719 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 720 | #define EDAC_DEVICE_SYMLINK "device" |
| 721 | |
| 722 | /* |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 723 | * edac_create_mci_instance_attributes |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 724 | * create MC driver specific attributes at the topmost level |
| 725 | * directory of this mci instance. |
| 726 | */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 727 | static int edac_create_mci_instance_attributes(struct mem_ctl_info *mci) |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 728 | { |
| 729 | int err; |
| 730 | struct mcidev_sysfs_attribute *sysfs_attrib; |
| 731 | |
| 732 | /* point to the start of the array and iterate over it |
| 733 | * adding each attribute listed to this mci instance's kobject |
| 734 | */ |
| 735 | sysfs_attrib = mci->mc_driver_sysfs_attributes; |
| 736 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 737 | while (sysfs_attrib && sysfs_attrib->attr.name) { |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 738 | err = sysfs_create_file(&mci->edac_mci_kobj, |
| 739 | (struct attribute*) sysfs_attrib); |
| 740 | if (err) { |
| 741 | return err; |
| 742 | } |
| 743 | |
| 744 | sysfs_attrib++; |
| 745 | } |
| 746 | |
| 747 | return 0; |
| 748 | } |
| 749 | |
| 750 | /* |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 751 | * edac_remove_mci_instance_attributes |
| 752 | * remove MC driver specific attributes at the topmost level |
| 753 | * directory of this mci instance. |
| 754 | */ |
| 755 | static void edac_remove_mci_instance_attributes(struct mem_ctl_info *mci) |
| 756 | { |
| 757 | struct mcidev_sysfs_attribute *sysfs_attrib; |
| 758 | |
| 759 | /* point to the start of the array and iterate over it |
| 760 | * adding each attribute listed to this mci instance's kobject |
| 761 | */ |
| 762 | sysfs_attrib = mci->mc_driver_sysfs_attributes; |
| 763 | |
| 764 | /* loop if there are attributes and until we hit a NULL entry */ |
| 765 | while (sysfs_attrib && sysfs_attrib->attr.name) { |
| 766 | sysfs_remove_file(&mci->edac_mci_kobj, |
| 767 | (struct attribute *) sysfs_attrib); |
| 768 | sysfs_attrib++; |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | |
| 773 | /* |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 774 | * Create a new Memory Controller kobject instance, |
| 775 | * mc<id> under the 'mc' directory |
| 776 | * |
| 777 | * Return: |
| 778 | * 0 Success |
| 779 | * !0 Failure |
| 780 | */ |
| 781 | int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) |
| 782 | { |
| 783 | int i; |
| 784 | int err; |
| 785 | struct csrow_info *csrow; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 786 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 787 | |
| 788 | debugf0("%s() idx=%d\n", __func__, mci->mc_idx); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 789 | |
| 790 | /* create a symlink for the device */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 791 | err = sysfs_create_link(kobj_mci, &mci->dev->kobj, |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 792 | EDAC_DEVICE_SYMLINK); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 793 | if (err) { |
| 794 | debugf1("%s() failure to create symlink\n", __func__); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 795 | goto fail0; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 796 | } |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 797 | |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 798 | /* If the low level driver desires some attributes, |
| 799 | * then create them now for the driver. |
| 800 | */ |
| 801 | if (mci->mc_driver_sysfs_attributes) { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 802 | err = edac_create_mci_instance_attributes(mci); |
| 803 | if (err) { |
| 804 | debugf1("%s() failure to create mci attributes\n", |
| 805 | __func__); |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 806 | goto fail0; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 807 | } |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 808 | } |
| 809 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 810 | /* Make directories for each CSROW object under the mc<id> kobject |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 811 | */ |
| 812 | for (i = 0; i < mci->nr_csrows; i++) { |
| 813 | csrow = &mci->csrows[i]; |
| 814 | |
| 815 | /* Only expose populated CSROWs */ |
| 816 | if (csrow->nr_pages > 0) { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 817 | err = edac_create_csrow_object(mci, csrow, i); |
| 818 | if (err) { |
| 819 | debugf1("%s() failure: create csrow %d obj\n", |
| 820 | __func__, i); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 821 | goto fail1; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 822 | } |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 823 | } |
| 824 | } |
| 825 | |
| 826 | return 0; |
| 827 | |
| 828 | /* CSROW error: backout what has already been registered, */ |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 829 | fail1: |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 830 | for (i--; i >= 0; i--) { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 831 | if (csrow->nr_pages > 0) { |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 832 | kobject_put(&mci->csrows[i].kobj); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 833 | } |
| 834 | } |
| 835 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 836 | /* remove the mci instance's attributes, if any */ |
| 837 | edac_remove_mci_instance_attributes(mci); |
| 838 | |
| 839 | /* remove the symlink */ |
| 840 | sysfs_remove_link(kobj_mci, EDAC_DEVICE_SYMLINK); |
| 841 | |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 842 | fail0: |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 843 | return err; |
| 844 | } |
| 845 | |
| 846 | /* |
| 847 | * remove a Memory Controller instance |
| 848 | */ |
| 849 | void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) |
| 850 | { |
| 851 | int i; |
| 852 | |
| 853 | debugf0("%s()\n", __func__); |
| 854 | |
| 855 | /* remove all csrow kobjects */ |
| 856 | for (i = 0; i < mci->nr_csrows; i++) { |
| 857 | if (mci->csrows[i].nr_pages > 0) { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 858 | debugf0("%s() unreg csrow-%d\n", __func__, i); |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 859 | kobject_put(&mci->csrows[i].kobj); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 860 | } |
| 861 | } |
| 862 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 863 | debugf0("%s() remove_link\n", __func__); |
| 864 | |
| 865 | /* remove the symlink */ |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 866 | sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 867 | |
| 868 | debugf0("%s() remove_mci_instance\n", __func__); |
| 869 | |
| 870 | /* remove this mci instance's attribtes */ |
| 871 | edac_remove_mci_instance_attributes(mci); |
| 872 | |
| 873 | debugf0("%s() unregister this mci kobj\n", __func__); |
| 874 | |
| 875 | /* unregister this instance's kobject */ |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 876 | kobject_put(&mci->edac_mci_kobj); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 877 | } |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 878 | |
| 879 | |
| 880 | |
| 881 | |
| 882 | /* |
| 883 | * edac_setup_sysfs_mc_kset(void) |
| 884 | * |
| 885 | * Initialize the mc_kset for the 'mc' entry |
| 886 | * This requires creating the top 'mc' directory with a kset |
| 887 | * and its controls/attributes. |
| 888 | * |
| 889 | * To this 'mc' kset, instance 'mci' will be grouped as children. |
| 890 | * |
| 891 | * Return: 0 SUCCESS |
| 892 | * !0 FAILURE error code |
| 893 | */ |
| 894 | int edac_sysfs_setup_mc_kset(void) |
| 895 | { |
| 896 | int err = 0; |
| 897 | struct sysdev_class *edac_class; |
| 898 | |
| 899 | debugf1("%s()\n", __func__); |
| 900 | |
| 901 | /* get the /sys/devices/system/edac class reference */ |
| 902 | edac_class = edac_get_edac_class(); |
| 903 | if (edac_class == NULL) { |
| 904 | debugf1("%s() no edac_class error=%d\n", __func__, err); |
| 905 | goto fail_out; |
| 906 | } |
| 907 | |
| 908 | /* Init the MC's kobject */ |
Arthur Jones | f9fc82a | 2008-07-25 01:49:11 -0700 | [diff] [blame^] | 909 | mc_kset = kset_create_and_add("mc", NULL, &edac_class->kset.kobj); |
| 910 | if (!mc_kset) { |
| 911 | err = -ENOMEM; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 912 | debugf1("%s() Failed to register '.../edac/mc'\n", __func__); |
| 913 | goto fail_out; |
| 914 | } |
| 915 | |
| 916 | debugf1("%s() Registered '.../edac/mc' kobject\n", __func__); |
| 917 | |
| 918 | return 0; |
| 919 | |
| 920 | |
| 921 | /* error unwind stack */ |
| 922 | fail_out: |
| 923 | return err; |
| 924 | } |
| 925 | |
| 926 | /* |
| 927 | * edac_sysfs_teardown_mc_kset |
| 928 | * |
| 929 | * deconstruct the mc_ket for memory controllers |
| 930 | */ |
| 931 | void edac_sysfs_teardown_mc_kset(void) |
| 932 | { |
Arthur Jones | f9fc82a | 2008-07-25 01:49:11 -0700 | [diff] [blame^] | 933 | kset_unregister(mc_kset); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 934 | } |
| 935 | |