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> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 14 | #include <linux/bug.h> |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 15 | |
Douglas Thompson | 20bcb7a | 2007-07-19 01:49:47 -0700 | [diff] [blame] | 16 | #include "edac_core.h" |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 17 | #include "edac_module.h" |
| 18 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 19 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 20 | /* MC EDAC Controls, setable by module parameter, and sysfs */ |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 21 | static int edac_mc_log_ue = 1; |
| 22 | static int edac_mc_log_ce = 1; |
Douglas Thompson | f044091 | 2007-07-19 01:50:19 -0700 | [diff] [blame] | 23 | static int edac_mc_panic_on_ue; |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 24 | static int edac_mc_poll_msec = 1000; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 25 | |
| 26 | /* Getter functions for above */ |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 27 | int edac_mc_get_log_ue(void) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 28 | { |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 29 | return edac_mc_log_ue; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 30 | } |
| 31 | |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 32 | int edac_mc_get_log_ce(void) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 33 | { |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 34 | return edac_mc_log_ce; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 35 | } |
| 36 | |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 37 | int edac_mc_get_panic_on_ue(void) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 38 | { |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 39 | return edac_mc_panic_on_ue; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 40 | } |
| 41 | |
Dave Jiang | 81d87cb | 2007-07-19 01:49:52 -0700 | [diff] [blame] | 42 | /* this is temporary */ |
| 43 | int edac_mc_get_poll_msec(void) |
| 44 | { |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 45 | return edac_mc_poll_msec; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 46 | } |
| 47 | |
Arthur Jones | 096846e | 2008-07-25 01:49:09 -0700 | [diff] [blame] | 48 | static int edac_set_poll_msec(const char *val, struct kernel_param *kp) |
| 49 | { |
| 50 | long l; |
| 51 | int ret; |
| 52 | |
| 53 | if (!val) |
| 54 | return -EINVAL; |
| 55 | |
| 56 | ret = strict_strtol(val, 0, &l); |
| 57 | if (ret == -EINVAL || ((int)l != l)) |
| 58 | return -EINVAL; |
| 59 | *((int *)kp->arg) = l; |
| 60 | |
| 61 | /* notify edac_mc engine to reset the poll period */ |
| 62 | edac_mc_reset_delay_period(l); |
| 63 | |
| 64 | return 0; |
| 65 | } |
| 66 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 67 | /* Parameter declarations for above */ |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 68 | module_param(edac_mc_panic_on_ue, int, 0644); |
| 69 | MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); |
| 70 | module_param(edac_mc_log_ue, int, 0644); |
| 71 | MODULE_PARM_DESC(edac_mc_log_ue, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 72 | "Log uncorrectable error to console: 0=off 1=on"); |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 73 | module_param(edac_mc_log_ce, int, 0644); |
| 74 | MODULE_PARM_DESC(edac_mc_log_ce, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 75 | "Log correctable error to console: 0=off 1=on"); |
Arthur Jones | 096846e | 2008-07-25 01:49:09 -0700 | [diff] [blame] | 76 | module_param_call(edac_mc_poll_msec, edac_set_poll_msec, param_get_int, |
| 77 | &edac_mc_poll_msec, 0644); |
Dave Jiang | 4de78c6 | 2007-07-19 01:49:54 -0700 | [diff] [blame] | 78 | MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds"); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 79 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 80 | /* |
| 81 | * various constants for Memory Controllers |
| 82 | */ |
| 83 | static const char *mem_types[] = { |
| 84 | [MEM_EMPTY] = "Empty", |
| 85 | [MEM_RESERVED] = "Reserved", |
| 86 | [MEM_UNKNOWN] = "Unknown", |
| 87 | [MEM_FPM] = "FPM", |
| 88 | [MEM_EDO] = "EDO", |
| 89 | [MEM_BEDO] = "BEDO", |
| 90 | [MEM_SDR] = "Unbuffered-SDR", |
| 91 | [MEM_RDR] = "Registered-SDR", |
| 92 | [MEM_DDR] = "Unbuffered-DDR", |
| 93 | [MEM_RDDR] = "Registered-DDR", |
Dave Jiang | 1a9b85e | 2007-07-19 01:49:38 -0700 | [diff] [blame] | 94 | [MEM_RMBS] = "RMBS", |
| 95 | [MEM_DDR2] = "Unbuffered-DDR2", |
| 96 | [MEM_FB_DDR2] = "FullyBuffered-DDR2", |
Benjamin Herrenschmidt | 1d5f726 | 2008-02-07 00:14:52 -0800 | [diff] [blame] | 97 | [MEM_RDDR2] = "Registered-DDR2", |
Yang Shi | b1cfebc | 2009-06-30 11:41:22 -0700 | [diff] [blame] | 98 | [MEM_XDR] = "XDR", |
| 99 | [MEM_DDR3] = "Unbuffered-DDR3", |
| 100 | [MEM_RDDR3] = "Registered-DDR3" |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 101 | }; |
| 102 | |
| 103 | static const char *dev_types[] = { |
| 104 | [DEV_UNKNOWN] = "Unknown", |
| 105 | [DEV_X1] = "x1", |
| 106 | [DEV_X2] = "x2", |
| 107 | [DEV_X4] = "x4", |
| 108 | [DEV_X8] = "x8", |
| 109 | [DEV_X16] = "x16", |
| 110 | [DEV_X32] = "x32", |
| 111 | [DEV_X64] = "x64" |
| 112 | }; |
| 113 | |
| 114 | static const char *edac_caps[] = { |
| 115 | [EDAC_UNKNOWN] = "Unknown", |
| 116 | [EDAC_NONE] = "None", |
| 117 | [EDAC_RESERVED] = "Reserved", |
| 118 | [EDAC_PARITY] = "PARITY", |
| 119 | [EDAC_EC] = "EC", |
| 120 | [EDAC_SECDED] = "SECDED", |
| 121 | [EDAC_S2ECD2ED] = "S2ECD2ED", |
| 122 | [EDAC_S4ECD4ED] = "S4ECD4ED", |
| 123 | [EDAC_S8ECD8ED] = "S8ECD8ED", |
| 124 | [EDAC_S16ECD16ED] = "S16ECD16ED" |
| 125 | }; |
| 126 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 127 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 128 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 129 | static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count) |
| 130 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 131 | int *value = (int *)ptr; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 132 | |
| 133 | if (isdigit(*buffer)) |
| 134 | *value = simple_strtoul(buffer, NULL, 0); |
| 135 | |
| 136 | return count; |
| 137 | } |
| 138 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 139 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 140 | /* EDAC sysfs CSROW data structures and methods |
| 141 | */ |
| 142 | |
| 143 | /* Set of more default csrow<id> attribute show/store functions */ |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 144 | 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] | 145 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 146 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 147 | return sprintf(data, "%u\n", csrow->ue_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 148 | } |
| 149 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 150 | 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] | 151 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 152 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 153 | return sprintf(data, "%u\n", csrow->ce_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 154 | } |
| 155 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 156 | static ssize_t csrow_size_show(struct csrow_info *csrow, char *data, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 157 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 158 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 159 | return sprintf(data, "%u\n", PAGES_TO_MiB(csrow->nr_pages)); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 160 | } |
| 161 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 162 | 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] | 163 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 164 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 165 | return sprintf(data, "%s\n", mem_types[csrow->mtype]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 166 | } |
| 167 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 168 | 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] | 169 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 170 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 171 | return sprintf(data, "%s\n", dev_types[csrow->dtype]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 172 | } |
| 173 | |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 174 | 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] | 175 | int private) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 176 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 177 | return sprintf(data, "%s\n", edac_caps[csrow->edac_mode]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | /* show/store functions for DIMM Label attributes */ |
| 181 | static ssize_t channel_dimm_label_show(struct csrow_info *csrow, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 182 | char *data, int channel) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 183 | { |
Arthur Jones | 124682c | 2008-07-25 01:49:12 -0700 | [diff] [blame] | 184 | /* if field has not been initialized, there is nothing to send */ |
| 185 | if (!csrow->channels[channel].label[0]) |
| 186 | return 0; |
| 187 | |
| 188 | return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 189 | csrow->channels[channel].label); |
| 190 | } |
| 191 | |
| 192 | static ssize_t channel_dimm_label_store(struct csrow_info *csrow, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 193 | const char *data, |
| 194 | size_t count, int channel) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 195 | { |
| 196 | ssize_t max_size = 0; |
| 197 | |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 198 | 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] | 199 | strncpy(csrow->channels[channel].label, data, max_size); |
| 200 | csrow->channels[channel].label[max_size] = '\0'; |
| 201 | |
| 202 | return max_size; |
| 203 | } |
| 204 | |
| 205 | /* show function for dynamic chX_ce_count attribute */ |
| 206 | static ssize_t channel_ce_count_show(struct csrow_info *csrow, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 207 | char *data, int channel) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 208 | { |
| 209 | return sprintf(data, "%u\n", csrow->channels[channel].ce_count); |
| 210 | } |
| 211 | |
| 212 | /* csrow specific attribute structure */ |
| 213 | struct csrowdev_attribute { |
| 214 | struct attribute attr; |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 215 | ssize_t(*show) (struct csrow_info *, char *, int); |
| 216 | ssize_t(*store) (struct csrow_info *, const char *, size_t, int); |
| 217 | int private; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 218 | }; |
| 219 | |
| 220 | #define to_csrow(k) container_of(k, struct csrow_info, kobj) |
| 221 | #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr) |
| 222 | |
| 223 | /* Set of show/store higher level functions for default csrow attributes */ |
| 224 | static ssize_t csrowdev_show(struct kobject *kobj, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 225 | struct attribute *attr, char *buffer) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 226 | { |
| 227 | struct csrow_info *csrow = to_csrow(kobj); |
| 228 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); |
| 229 | |
| 230 | if (csrowdev_attr->show) |
| 231 | return csrowdev_attr->show(csrow, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 232 | buffer, csrowdev_attr->private); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 233 | return -EIO; |
| 234 | } |
| 235 | |
| 236 | static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 237 | const char *buffer, size_t count) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 238 | { |
| 239 | struct csrow_info *csrow = to_csrow(kobj); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 240 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 241 | |
| 242 | if (csrowdev_attr->store) |
| 243 | return csrowdev_attr->store(csrow, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 244 | buffer, |
| 245 | count, csrowdev_attr->private); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 246 | return -EIO; |
| 247 | } |
| 248 | |
Emese Revfy | 52cf25d | 2010-01-19 02:58:23 +0100 | [diff] [blame] | 249 | static const struct sysfs_ops csrowfs_ops = { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 250 | .show = csrowdev_show, |
| 251 | .store = csrowdev_store |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 252 | }; |
| 253 | |
| 254 | #define CSROWDEV_ATTR(_name,_mode,_show,_store,_private) \ |
| 255 | static struct csrowdev_attribute attr_##_name = { \ |
| 256 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 257 | .show = _show, \ |
| 258 | .store = _store, \ |
| 259 | .private = _private, \ |
| 260 | }; |
| 261 | |
| 262 | /* default cwrow<id>/attribute files */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 263 | CSROWDEV_ATTR(size_mb, S_IRUGO, csrow_size_show, NULL, 0); |
| 264 | CSROWDEV_ATTR(dev_type, S_IRUGO, csrow_dev_type_show, NULL, 0); |
| 265 | CSROWDEV_ATTR(mem_type, S_IRUGO, csrow_mem_type_show, NULL, 0); |
| 266 | CSROWDEV_ATTR(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL, 0); |
| 267 | CSROWDEV_ATTR(ue_count, S_IRUGO, csrow_ue_count_show, NULL, 0); |
| 268 | CSROWDEV_ATTR(ce_count, S_IRUGO, csrow_ce_count_show, NULL, 0); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 269 | |
| 270 | /* default attributes of the CSROW<id> object */ |
| 271 | static struct csrowdev_attribute *default_csrow_attr[] = { |
| 272 | &attr_dev_type, |
| 273 | &attr_mem_type, |
| 274 | &attr_edac_mode, |
| 275 | &attr_size_mb, |
| 276 | &attr_ue_count, |
| 277 | &attr_ce_count, |
| 278 | NULL, |
| 279 | }; |
| 280 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 281 | /* possible dynamic channel DIMM Label attribute files */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 282 | CSROWDEV_ATTR(ch0_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 283 | channel_dimm_label_show, channel_dimm_label_store, 0); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 284 | CSROWDEV_ATTR(ch1_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 285 | channel_dimm_label_show, channel_dimm_label_store, 1); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 286 | CSROWDEV_ATTR(ch2_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 287 | channel_dimm_label_show, channel_dimm_label_store, 2); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 288 | CSROWDEV_ATTR(ch3_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 289 | channel_dimm_label_show, channel_dimm_label_store, 3); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 290 | CSROWDEV_ATTR(ch4_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 291 | channel_dimm_label_show, channel_dimm_label_store, 4); |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 292 | CSROWDEV_ATTR(ch5_dimm_label, S_IRUGO | S_IWUSR, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 293 | channel_dimm_label_show, channel_dimm_label_store, 5); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 294 | |
| 295 | /* Total possible dynamic DIMM Label attribute file table */ |
| 296 | static struct csrowdev_attribute *dynamic_csrow_dimm_attr[] = { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 297 | &attr_ch0_dimm_label, |
| 298 | &attr_ch1_dimm_label, |
| 299 | &attr_ch2_dimm_label, |
| 300 | &attr_ch3_dimm_label, |
| 301 | &attr_ch4_dimm_label, |
| 302 | &attr_ch5_dimm_label |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 303 | }; |
| 304 | |
| 305 | /* possible dynamic channel ce_count attribute files */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 306 | CSROWDEV_ATTR(ch0_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 0); |
| 307 | CSROWDEV_ATTR(ch1_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 1); |
| 308 | CSROWDEV_ATTR(ch2_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 2); |
| 309 | CSROWDEV_ATTR(ch3_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 3); |
| 310 | CSROWDEV_ATTR(ch4_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 4); |
| 311 | 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] | 312 | |
| 313 | /* Total possible dynamic ce_count attribute file table */ |
| 314 | static struct csrowdev_attribute *dynamic_csrow_ce_count_attr[] = { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 315 | &attr_ch0_ce_count, |
| 316 | &attr_ch1_ce_count, |
| 317 | &attr_ch2_ce_count, |
| 318 | &attr_ch3_ce_count, |
| 319 | &attr_ch4_ce_count, |
| 320 | &attr_ch5_ce_count |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 321 | }; |
| 322 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 323 | #define EDAC_NR_CHANNELS 6 |
| 324 | |
| 325 | /* Create dynamic CHANNEL files, indexed by 'chan', under specifed CSROW */ |
| 326 | static int edac_create_channel_files(struct kobject *kobj, int chan) |
| 327 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 328 | int err = -ENODEV; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 329 | |
| 330 | if (chan >= EDAC_NR_CHANNELS) |
| 331 | return err; |
| 332 | |
| 333 | /* create the DIMM label attribute file */ |
| 334 | err = sysfs_create_file(kobj, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 335 | (struct attribute *) |
| 336 | dynamic_csrow_dimm_attr[chan]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 337 | |
| 338 | if (!err) { |
| 339 | /* create the CE Count attribute file */ |
| 340 | err = sysfs_create_file(kobj, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 341 | (struct attribute *) |
| 342 | dynamic_csrow_ce_count_attr[chan]); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 343 | } else { |
Douglas Thompson | e27e3da | 2007-07-19 01:49:36 -0700 | [diff] [blame] | 344 | debugf1("%s() dimm labels and ce_count files created", |
| 345 | __func__); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 346 | } |
| 347 | |
| 348 | return err; |
| 349 | } |
| 350 | |
| 351 | /* No memory to release for this kobj */ |
| 352 | static void edac_csrow_instance_release(struct kobject *kobj) |
| 353 | { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 354 | struct mem_ctl_info *mci; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 355 | struct csrow_info *cs; |
| 356 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 357 | debugf1("%s()\n", __func__); |
| 358 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 359 | cs = container_of(kobj, struct csrow_info, kobj); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 360 | mci = cs->mci; |
| 361 | |
| 362 | kobject_put(&mci->edac_mci_kobj); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | /* the kobj_type instance for a CSROW */ |
| 366 | static struct kobj_type ktype_csrow = { |
| 367 | .release = edac_csrow_instance_release, |
| 368 | .sysfs_ops = &csrowfs_ops, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 369 | .default_attrs = (struct attribute **)default_csrow_attr, |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 370 | }; |
| 371 | |
| 372 | /* Create a CSROW object under specifed edac_mc_device */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 373 | static int edac_create_csrow_object(struct mem_ctl_info *mci, |
| 374 | struct csrow_info *csrow, int index) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 375 | { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 376 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
| 377 | struct kobject *kobj; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 378 | int chan; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 379 | int err; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 380 | |
| 381 | /* generate ..../edac/mc/mc<id>/csrow<index> */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 382 | memset(&csrow->kobj, 0, sizeof(csrow->kobj)); |
| 383 | csrow->mci = mci; /* include container up link */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 384 | |
| 385 | /* bump the mci instance's kobject's ref count */ |
| 386 | kobj = kobject_get(&mci->edac_mci_kobj); |
| 387 | if (!kobj) { |
| 388 | err = -ENODEV; |
| 389 | goto err_out; |
| 390 | } |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 391 | |
| 392 | /* Instanstiate the csrow object */ |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 393 | err = kobject_init_and_add(&csrow->kobj, &ktype_csrow, kobj_mci, |
| 394 | "csrow%d", index); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 395 | if (err) |
| 396 | goto err_release_top_kobj; |
| 397 | |
| 398 | /* At this point, to release a csrow kobj, one must |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 399 | * call the kobject_put and allow that tear down |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 400 | * to work the releasing |
| 401 | */ |
| 402 | |
| 403 | /* Create the dyanmic attribute files on this csrow, |
| 404 | * namely, the DIMM labels and the channel ce_count |
| 405 | */ |
| 406 | for (chan = 0; chan < csrow->nr_channels; chan++) { |
| 407 | err = edac_create_channel_files(&csrow->kobj, chan); |
| 408 | if (err) { |
| 409 | /* special case the unregister here */ |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 410 | kobject_put(&csrow->kobj); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 411 | goto err_out; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 412 | } |
| 413 | } |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 414 | kobject_uevent(&csrow->kobj, KOBJ_ADD); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 415 | return 0; |
| 416 | |
| 417 | /* error unwind stack */ |
| 418 | err_release_top_kobj: |
| 419 | kobject_put(&mci->edac_mci_kobj); |
| 420 | |
| 421 | err_out: |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 422 | return err; |
| 423 | } |
| 424 | |
| 425 | /* default sysfs methods and data structures for the main MCI kobject */ |
| 426 | |
| 427 | static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 428 | const char *data, size_t count) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 429 | { |
| 430 | int row, chan; |
| 431 | |
| 432 | mci->ue_noinfo_count = 0; |
| 433 | mci->ce_noinfo_count = 0; |
| 434 | mci->ue_count = 0; |
| 435 | mci->ce_count = 0; |
| 436 | |
| 437 | for (row = 0; row < mci->nr_csrows; row++) { |
| 438 | struct csrow_info *ri = &mci->csrows[row]; |
| 439 | |
| 440 | ri->ue_count = 0; |
| 441 | ri->ce_count = 0; |
| 442 | |
| 443 | for (chan = 0; chan < ri->nr_channels; chan++) |
| 444 | ri->channels[chan].ce_count = 0; |
| 445 | } |
| 446 | |
| 447 | mci->start_time = jiffies; |
| 448 | return count; |
| 449 | } |
| 450 | |
| 451 | /* memory scrubbing */ |
| 452 | 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] | 453 | const char *data, size_t count) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 454 | { |
| 455 | u32 bandwidth = -1; |
| 456 | |
| 457 | if (mci->set_sdram_scrub_rate) { |
| 458 | |
| 459 | memctrl_int_store(&bandwidth, data, count); |
| 460 | |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 461 | if (!(*mci->set_sdram_scrub_rate) (mci, &bandwidth)) { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 462 | edac_printk(KERN_DEBUG, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 463 | "Scrub rate set successfully, applied: %d\n", |
| 464 | bandwidth); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 465 | } else { |
| 466 | /* FIXME: error codes maybe? */ |
| 467 | edac_printk(KERN_DEBUG, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 468 | "Scrub rate set FAILED, could not apply: %d\n", |
| 469 | bandwidth); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 470 | } |
| 471 | } else { |
| 472 | /* FIXME: produce "not implemented" ERROR for user-side. */ |
| 473 | edac_printk(KERN_WARNING, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 474 | "Memory scrubbing 'set'control is not implemented!\n"); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 475 | } |
| 476 | return count; |
| 477 | } |
| 478 | |
| 479 | static ssize_t mci_sdram_scrub_rate_show(struct mem_ctl_info *mci, char *data) |
| 480 | { |
| 481 | u32 bandwidth = -1; |
| 482 | |
| 483 | if (mci->get_sdram_scrub_rate) { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 484 | if (!(*mci->get_sdram_scrub_rate) (mci, &bandwidth)) { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 485 | edac_printk(KERN_DEBUG, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 486 | "Scrub rate successfully, fetched: %d\n", |
| 487 | bandwidth); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 488 | } else { |
| 489 | /* FIXME: error codes maybe? */ |
| 490 | edac_printk(KERN_DEBUG, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 491 | "Scrub rate fetch FAILED, got: %d\n", |
| 492 | bandwidth); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 493 | } |
| 494 | } else { |
| 495 | /* FIXME: produce "not implemented" ERROR for user-side. */ |
| 496 | edac_printk(KERN_WARNING, EDAC_MC, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 497 | "Memory scrubbing 'get' control is not implemented\n"); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 498 | } |
| 499 | return sprintf(data, "%d\n", bandwidth); |
| 500 | } |
| 501 | |
| 502 | /* default attribute files for the MCI object */ |
| 503 | static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data) |
| 504 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 505 | return sprintf(data, "%d\n", mci->ue_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 506 | } |
| 507 | |
| 508 | static ssize_t mci_ce_count_show(struct mem_ctl_info *mci, char *data) |
| 509 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 510 | return sprintf(data, "%d\n", mci->ce_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 511 | } |
| 512 | |
| 513 | static ssize_t mci_ce_noinfo_show(struct mem_ctl_info *mci, char *data) |
| 514 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 515 | return sprintf(data, "%d\n", mci->ce_noinfo_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 516 | } |
| 517 | |
| 518 | static ssize_t mci_ue_noinfo_show(struct mem_ctl_info *mci, char *data) |
| 519 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 520 | return sprintf(data, "%d\n", mci->ue_noinfo_count); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | static ssize_t mci_seconds_show(struct mem_ctl_info *mci, char *data) |
| 524 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 525 | return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 526 | } |
| 527 | |
| 528 | static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data) |
| 529 | { |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 530 | return sprintf(data, "%s\n", mci->ctl_name); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) |
| 534 | { |
| 535 | int total_pages, csrow_idx; |
| 536 | |
| 537 | for (total_pages = csrow_idx = 0; csrow_idx < mci->nr_csrows; |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 538 | csrow_idx++) { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 539 | struct csrow_info *csrow = &mci->csrows[csrow_idx]; |
| 540 | |
| 541 | if (!csrow->nr_pages) |
| 542 | continue; |
| 543 | |
| 544 | total_pages += csrow->nr_pages; |
| 545 | } |
| 546 | |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 547 | return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages)); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 548 | } |
| 549 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 550 | #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] | 551 | #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] | 552 | |
| 553 | /* MCI show/store functions for top most object */ |
| 554 | static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 555 | char *buffer) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 556 | { |
| 557 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 558 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 559 | |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 560 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); |
| 561 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 562 | if (mcidev_attr->show) |
| 563 | return mcidev_attr->show(mem_ctl_info, buffer); |
| 564 | |
| 565 | return -EIO; |
| 566 | } |
| 567 | |
| 568 | static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr, |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 569 | const char *buffer, size_t count) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 570 | { |
| 571 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 572 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 573 | |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 574 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); |
| 575 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 576 | if (mcidev_attr->store) |
| 577 | return mcidev_attr->store(mem_ctl_info, buffer, count); |
| 578 | |
| 579 | return -EIO; |
| 580 | } |
| 581 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 582 | /* Intermediate show/store table */ |
Emese Revfy | 52cf25d | 2010-01-19 02:58:23 +0100 | [diff] [blame] | 583 | static const struct sysfs_ops mci_ops = { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 584 | .show = mcidev_show, |
| 585 | .store = mcidev_store |
| 586 | }; |
| 587 | |
| 588 | #define MCIDEV_ATTR(_name,_mode,_show,_store) \ |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 589 | static struct mcidev_sysfs_attribute mci_attr_##_name = { \ |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 590 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 591 | .show = _show, \ |
| 592 | .store = _store, \ |
| 593 | }; |
| 594 | |
| 595 | /* default Control file */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 596 | MCIDEV_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 597 | |
| 598 | /* default Attribute files */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 599 | MCIDEV_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL); |
| 600 | MCIDEV_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL); |
| 601 | MCIDEV_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL); |
| 602 | MCIDEV_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL); |
| 603 | MCIDEV_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL); |
| 604 | MCIDEV_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL); |
| 605 | MCIDEV_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 606 | |
| 607 | /* memory scrubber attribute file */ |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 608 | 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] | 609 | mci_sdram_scrub_rate_store); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 610 | |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 611 | static struct mcidev_sysfs_attribute *mci_attr[] = { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 612 | &mci_attr_reset_counters, |
| 613 | &mci_attr_mc_name, |
| 614 | &mci_attr_size_mb, |
| 615 | &mci_attr_seconds_since_reset, |
| 616 | &mci_attr_ue_noinfo_count, |
| 617 | &mci_attr_ce_noinfo_count, |
| 618 | &mci_attr_ue_count, |
| 619 | &mci_attr_ce_count, |
| 620 | &mci_attr_sdram_scrub_rate, |
| 621 | NULL |
| 622 | }; |
| 623 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 624 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 625 | /* |
| 626 | * Release of a MC controlling instance |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 627 | * |
| 628 | * each MC control instance has the following resources upon entry: |
| 629 | * a) a ref count on the top memctl kobj |
| 630 | * b) a ref count on this module |
| 631 | * |
| 632 | * this function must decrement those ref counts and then |
| 633 | * issue a free on the instance's memory |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 634 | */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 635 | static void edac_mci_control_release(struct kobject *kobj) |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 636 | { |
| 637 | struct mem_ctl_info *mci; |
| 638 | |
| 639 | mci = to_mci(kobj); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 640 | |
| 641 | debugf0("%s() mci instance idx=%d releasing\n", __func__, mci->mc_idx); |
| 642 | |
| 643 | /* decrement the module ref count */ |
| 644 | module_put(mci->owner); |
| 645 | |
| 646 | /* free the mci instance memory here */ |
| 647 | kfree(mci); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 648 | } |
| 649 | |
| 650 | static struct kobj_type ktype_mci = { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 651 | .release = edac_mci_control_release, |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 652 | .sysfs_ops = &mci_ops, |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 653 | .default_attrs = (struct attribute **)mci_attr, |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 654 | }; |
| 655 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 656 | /* EDAC memory controller sysfs kset: |
| 657 | * /sys/devices/system/edac/mc |
| 658 | */ |
Arthur Jones | f9fc82a | 2008-07-25 01:49:11 -0700 | [diff] [blame] | 659 | static struct kset *mc_kset; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 660 | |
| 661 | /* |
| 662 | * edac_mc_register_sysfs_main_kobj |
| 663 | * |
| 664 | * setups and registers the main kobject for each mci |
| 665 | */ |
| 666 | int edac_mc_register_sysfs_main_kobj(struct mem_ctl_info *mci) |
| 667 | { |
| 668 | struct kobject *kobj_mci; |
| 669 | int err; |
| 670 | |
| 671 | debugf1("%s()\n", __func__); |
| 672 | |
| 673 | kobj_mci = &mci->edac_mci_kobj; |
| 674 | |
| 675 | /* Init the mci's kobject */ |
| 676 | memset(kobj_mci, 0, sizeof(*kobj_mci)); |
| 677 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 678 | /* Record which module 'owns' this control structure |
| 679 | * and bump the ref count of the module |
| 680 | */ |
| 681 | mci->owner = THIS_MODULE; |
| 682 | |
| 683 | /* bump ref count on this module */ |
| 684 | if (!try_module_get(mci->owner)) { |
| 685 | err = -ENODEV; |
| 686 | goto fail_out; |
| 687 | } |
| 688 | |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 689 | /* this instance become part of the mc_kset */ |
Arthur Jones | f9fc82a | 2008-07-25 01:49:11 -0700 | [diff] [blame] | 690 | kobj_mci->kset = mc_kset; |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 691 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 692 | /* register the mc<id> kobject to the mc_kset */ |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 693 | err = kobject_init_and_add(kobj_mci, &ktype_mci, NULL, |
| 694 | "mc%d", mci->mc_idx); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 695 | if (err) { |
| 696 | debugf1("%s()Failed to register '.../edac/mc%d'\n", |
| 697 | __func__, mci->mc_idx); |
| 698 | goto kobj_reg_fail; |
| 699 | } |
Greg Kroah-Hartman | b2ed215 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 700 | kobject_uevent(kobj_mci, KOBJ_ADD); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 701 | |
| 702 | /* At this point, to 'free' the control struct, |
| 703 | * edac_mc_unregister_sysfs_main_kobj() must be used |
| 704 | */ |
| 705 | |
| 706 | debugf1("%s() Registered '.../edac/mc%d' kobject\n", |
| 707 | __func__, mci->mc_idx); |
| 708 | |
| 709 | return 0; |
| 710 | |
| 711 | /* Error exit stack */ |
| 712 | |
| 713 | kobj_reg_fail: |
| 714 | module_put(mci->owner); |
| 715 | |
| 716 | fail_out: |
| 717 | return err; |
| 718 | } |
| 719 | |
| 720 | /* |
| 721 | * edac_mc_register_sysfs_main_kobj |
| 722 | * |
| 723 | * tears down and the main mci kobject from the mc_kset |
| 724 | */ |
| 725 | void edac_mc_unregister_sysfs_main_kobj(struct mem_ctl_info *mci) |
| 726 | { |
| 727 | /* delete the kobj from the mc_kset */ |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 728 | kobject_put(&mci->edac_mci_kobj); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 729 | } |
| 730 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 731 | #define EDAC_DEVICE_SYMLINK "device" |
| 732 | |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 733 | #define grp_to_mci(k) (container_of(k, struct mcidev_sysfs_group_kobj, kobj)->mci) |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 734 | |
| 735 | /* MCI show/store functions for top most object */ |
| 736 | static ssize_t inst_grp_show(struct kobject *kobj, struct attribute *attr, |
| 737 | char *buffer) |
| 738 | { |
| 739 | struct mem_ctl_info *mem_ctl_info = grp_to_mci(kobj); |
| 740 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
| 741 | |
| 742 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); |
| 743 | |
| 744 | if (mcidev_attr->show) |
| 745 | return mcidev_attr->show(mem_ctl_info, buffer); |
| 746 | |
| 747 | return -EIO; |
| 748 | } |
| 749 | |
| 750 | static ssize_t inst_grp_store(struct kobject *kobj, struct attribute *attr, |
| 751 | const char *buffer, size_t count) |
| 752 | { |
| 753 | struct mem_ctl_info *mem_ctl_info = grp_to_mci(kobj); |
| 754 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
| 755 | |
| 756 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); |
| 757 | |
| 758 | if (mcidev_attr->store) |
| 759 | return mcidev_attr->store(mem_ctl_info, buffer, count); |
| 760 | |
| 761 | return -EIO; |
| 762 | } |
| 763 | |
| 764 | /* No memory to release for this kobj */ |
| 765 | static void edac_inst_grp_release(struct kobject *kobj) |
| 766 | { |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 767 | struct mcidev_sysfs_group_kobj *grp; |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 768 | struct mem_ctl_info *mci; |
| 769 | |
| 770 | debugf1("%s()\n", __func__); |
| 771 | |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 772 | grp = container_of(kobj, struct mcidev_sysfs_group_kobj, kobj); |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 773 | mci = grp->mci; |
| 774 | |
| 775 | kobject_put(&mci->edac_mci_kobj); |
| 776 | } |
| 777 | |
| 778 | /* Intermediate show/store table */ |
| 779 | static struct sysfs_ops inst_grp_ops = { |
| 780 | .show = inst_grp_show, |
| 781 | .store = inst_grp_store |
| 782 | }; |
| 783 | |
| 784 | /* the kobj_type instance for a instance group */ |
| 785 | static struct kobj_type ktype_inst_grp = { |
| 786 | .release = edac_inst_grp_release, |
| 787 | .sysfs_ops = &inst_grp_ops, |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 788 | }; |
| 789 | |
| 790 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 791 | /* |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 792 | * edac_create_mci_instance_attributes |
Mauro Carvalho Chehab | 9fa2fc2e | 2009-09-23 16:26:09 -0300 | [diff] [blame] | 793 | * create MC driver specific attributes bellow an specified kobj |
| 794 | * This routine calls itself recursively, in order to create an entire |
| 795 | * object tree. |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 796 | */ |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 797 | static int edac_create_mci_instance_attributes(struct mem_ctl_info *mci, |
Mauro Carvalho Chehab | 9fa2fc2e | 2009-09-23 16:26:09 -0300 | [diff] [blame] | 798 | struct mcidev_sysfs_attribute *sysfs_attrib, |
| 799 | struct kobject *kobj) |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 800 | { |
| 801 | int err; |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 802 | |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 803 | debugf1("%s()\n", __func__); |
| 804 | |
Mauro Carvalho Chehab | 9fa2fc2e | 2009-09-23 16:26:09 -0300 | [diff] [blame] | 805 | while (sysfs_attrib) { |
| 806 | if (sysfs_attrib->grp) { |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 807 | struct mcidev_sysfs_group_kobj *grp_kobj; |
| 808 | |
| 809 | grp_kobj = kzalloc(sizeof(*grp_kobj), GFP_KERNEL); |
| 810 | if (!grp_kobj) |
| 811 | return -ENOMEM; |
| 812 | |
| 813 | list_add_tail(&grp_kobj->list, &mci->grp_kobj_list); |
| 814 | |
| 815 | grp_kobj->grp = sysfs_attrib->grp; |
| 816 | grp_kobj->mci = mci; |
Mauro Carvalho Chehab | c419d92 | 2009-09-24 16:36:32 -0300 | [diff] [blame] | 817 | |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 818 | debugf0("%s() grp %s, mci %p\n", __func__, |
| 819 | sysfs_attrib->grp->name, mci); |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 820 | |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 821 | err = kobject_init_and_add(&grp_kobj->kobj, |
| 822 | &ktype_inst_grp, |
Mauro Carvalho Chehab | c419d92 | 2009-09-24 16:36:32 -0300 | [diff] [blame] | 823 | &mci->edac_mci_kobj, |
Mauro Carvalho Chehab | 9fa2fc2e | 2009-09-23 16:26:09 -0300 | [diff] [blame] | 824 | sysfs_attrib->grp->name); |
| 825 | if (err) |
| 826 | return err; |
| 827 | |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 828 | err = edac_create_mci_instance_attributes(mci, |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 829 | grp_kobj->grp->mcidev_attr, |
| 830 | &grp_kobj->kobj); |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 831 | |
Mauro Carvalho Chehab | 9fa2fc2e | 2009-09-23 16:26:09 -0300 | [diff] [blame] | 832 | if (err) |
| 833 | return err; |
| 834 | } else if (sysfs_attrib->attr.name) { |
| 835 | debugf0("%s() file %s\n", __func__, |
| 836 | sysfs_attrib->attr.name); |
| 837 | |
| 838 | err = sysfs_create_file(kobj, &sysfs_attrib->attr); |
| 839 | } else |
| 840 | break; |
| 841 | |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 842 | if (err) { |
| 843 | return err; |
| 844 | } |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 845 | sysfs_attrib++; |
| 846 | } |
| 847 | |
| 848 | return 0; |
| 849 | } |
| 850 | |
| 851 | /* |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 852 | * edac_remove_mci_instance_attributes |
| 853 | * remove MC driver specific attributes at the topmost level |
| 854 | * directory of this mci instance. |
| 855 | */ |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 856 | static void edac_remove_mci_instance_attributes(struct mem_ctl_info *mci, |
Mauro Carvalho Chehab | 9fa2fc2e | 2009-09-23 16:26:09 -0300 | [diff] [blame] | 857 | struct mcidev_sysfs_attribute *sysfs_attrib, |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 858 | struct kobject *kobj, int count) |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 859 | { |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 860 | struct mcidev_sysfs_group_kobj *grp_kobj, *tmp; |
| 861 | |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 862 | debugf1("%s()\n", __func__); |
| 863 | |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 864 | /* |
| 865 | * loop if there are attributes and until we hit a NULL entry |
| 866 | * Remove first all the atributes |
| 867 | */ |
Mauro Carvalho Chehab | 9fa2fc2e | 2009-09-23 16:26:09 -0300 | [diff] [blame] | 868 | while (sysfs_attrib) { |
| 869 | if (sysfs_attrib->grp) { |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 870 | list_for_each_entry(grp_kobj, &mci->grp_kobj_list, |
| 871 | list) |
| 872 | if (grp_kobj->grp == sysfs_attrib->grp) |
| 873 | edac_remove_mci_instance_attributes(mci, |
| 874 | grp_kobj->grp->mcidev_attr, |
| 875 | &grp_kobj->kobj, count + 1); |
| 876 | } else if (sysfs_attrib->attr.name) { |
Mauro Carvalho Chehab | 9fa2fc2e | 2009-09-23 16:26:09 -0300 | [diff] [blame] | 877 | debugf0("%s() file %s\n", __func__, |
| 878 | sysfs_attrib->attr.name); |
| 879 | sysfs_remove_file(kobj, &sysfs_attrib->attr); |
| 880 | } else |
| 881 | break; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 882 | sysfs_attrib++; |
| 883 | } |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 884 | |
| 885 | /* |
| 886 | * Now that all attributes got removed, it is save to remove all groups |
| 887 | */ |
| 888 | if (!count) |
| 889 | list_for_each_entry_safe(grp_kobj, tmp, &mci->grp_kobj_list, |
| 890 | list) { |
| 891 | debugf0("%s() grp %s\n", __func__, grp_kobj->grp->name); |
| 892 | kobject_put(&grp_kobj->kobj); |
| 893 | } |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 894 | } |
| 895 | |
| 896 | |
| 897 | /* |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 898 | * Create a new Memory Controller kobject instance, |
| 899 | * mc<id> under the 'mc' directory |
| 900 | * |
| 901 | * Return: |
| 902 | * 0 Success |
| 903 | * !0 Failure |
| 904 | */ |
| 905 | int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) |
| 906 | { |
| 907 | int i; |
| 908 | int err; |
| 909 | struct csrow_info *csrow; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 910 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 911 | |
| 912 | debugf0("%s() idx=%d\n", __func__, mci->mc_idx); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 913 | |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 914 | INIT_LIST_HEAD(&mci->grp_kobj_list); |
| 915 | |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 916 | /* create a symlink for the device */ |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 917 | err = sysfs_create_link(kobj_mci, &mci->dev->kobj, |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 918 | EDAC_DEVICE_SYMLINK); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 919 | if (err) { |
| 920 | debugf1("%s() failure to create symlink\n", __func__); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 921 | goto fail0; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 922 | } |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 923 | |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 924 | /* If the low level driver desires some attributes, |
| 925 | * then create them now for the driver. |
| 926 | */ |
| 927 | if (mci->mc_driver_sysfs_attributes) { |
Mauro Carvalho Chehab | cc301b3 | 2009-09-24 16:23:42 -0300 | [diff] [blame] | 928 | err = edac_create_mci_instance_attributes(mci, |
Mauro Carvalho Chehab | 9fa2fc2e | 2009-09-23 16:26:09 -0300 | [diff] [blame] | 929 | mci->mc_driver_sysfs_attributes, |
| 930 | &mci->edac_mci_kobj); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 931 | if (err) { |
| 932 | debugf1("%s() failure to create mci attributes\n", |
| 933 | __func__); |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 934 | goto fail0; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 935 | } |
Douglas Thompson | 42a8e39 | 2007-07-19 01:50:10 -0700 | [diff] [blame] | 936 | } |
| 937 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 938 | /* Make directories for each CSROW object under the mc<id> kobject |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 939 | */ |
| 940 | for (i = 0; i < mci->nr_csrows; i++) { |
| 941 | csrow = &mci->csrows[i]; |
| 942 | |
| 943 | /* Only expose populated CSROWs */ |
| 944 | if (csrow->nr_pages > 0) { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 945 | err = edac_create_csrow_object(mci, csrow, i); |
| 946 | if (err) { |
| 947 | debugf1("%s() failure: create csrow %d obj\n", |
| 948 | __func__, i); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 949 | goto fail1; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 950 | } |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 951 | } |
| 952 | } |
| 953 | |
| 954 | return 0; |
| 955 | |
| 956 | /* CSROW error: backout what has already been registered, */ |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 957 | fail1: |
Douglas Thompson | 079708b | 2007-07-19 01:49:58 -0700 | [diff] [blame] | 958 | for (i--; i >= 0; i--) { |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 959 | if (csrow->nr_pages > 0) { |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 960 | kobject_put(&mci->csrows[i].kobj); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 961 | } |
| 962 | } |
| 963 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 964 | /* remove the mci instance's attributes, if any */ |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 965 | edac_remove_mci_instance_attributes(mci, |
| 966 | mci->mc_driver_sysfs_attributes, &mci->edac_mci_kobj, 0); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 967 | |
| 968 | /* remove the symlink */ |
| 969 | sysfs_remove_link(kobj_mci, EDAC_DEVICE_SYMLINK); |
| 970 | |
Douglas Thompson | 052dfb4 | 2007-07-19 01:50:13 -0700 | [diff] [blame] | 971 | fail0: |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 972 | return err; |
| 973 | } |
| 974 | |
| 975 | /* |
| 976 | * remove a Memory Controller instance |
| 977 | */ |
| 978 | void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) |
| 979 | { |
| 980 | int i; |
| 981 | |
| 982 | debugf0("%s()\n", __func__); |
| 983 | |
| 984 | /* remove all csrow kobjects */ |
| 985 | for (i = 0; i < mci->nr_csrows; i++) { |
| 986 | if (mci->csrows[i].nr_pages > 0) { |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 987 | debugf0("%s() unreg csrow-%d\n", __func__, i); |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 988 | kobject_put(&mci->csrows[i].kobj); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 989 | } |
| 990 | } |
| 991 | |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 992 | debugf0("%s() remove_link\n", __func__); |
| 993 | |
| 994 | /* remove the symlink */ |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 995 | sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 996 | |
| 997 | debugf0("%s() remove_mci_instance\n", __func__); |
| 998 | |
| 999 | /* remove this mci instance's attribtes */ |
Mauro Carvalho Chehab | b968759 | 2009-09-25 13:42:25 -0300 | [diff] [blame^] | 1000 | edac_remove_mci_instance_attributes(mci, |
| 1001 | mci->mc_driver_sysfs_attributes, |
| 1002 | &mci->edac_mci_kobj, 0); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 1003 | debugf0("%s() unregister this mci kobj\n", __func__); |
| 1004 | |
| 1005 | /* unregister this instance's kobject */ |
Greg Kroah-Hartman | c10997f | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 1006 | kobject_put(&mci->edac_mci_kobj); |
Douglas Thompson | 7c9281d | 2007-07-19 01:49:33 -0700 | [diff] [blame] | 1007 | } |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 1008 | |
| 1009 | |
| 1010 | |
| 1011 | |
| 1012 | /* |
| 1013 | * edac_setup_sysfs_mc_kset(void) |
| 1014 | * |
| 1015 | * Initialize the mc_kset for the 'mc' entry |
| 1016 | * This requires creating the top 'mc' directory with a kset |
| 1017 | * and its controls/attributes. |
| 1018 | * |
| 1019 | * To this 'mc' kset, instance 'mci' will be grouped as children. |
| 1020 | * |
| 1021 | * Return: 0 SUCCESS |
| 1022 | * !0 FAILURE error code |
| 1023 | */ |
| 1024 | int edac_sysfs_setup_mc_kset(void) |
| 1025 | { |
| 1026 | int err = 0; |
| 1027 | struct sysdev_class *edac_class; |
| 1028 | |
| 1029 | debugf1("%s()\n", __func__); |
| 1030 | |
| 1031 | /* get the /sys/devices/system/edac class reference */ |
| 1032 | edac_class = edac_get_edac_class(); |
| 1033 | if (edac_class == NULL) { |
| 1034 | debugf1("%s() no edac_class error=%d\n", __func__, err); |
| 1035 | goto fail_out; |
| 1036 | } |
| 1037 | |
| 1038 | /* Init the MC's kobject */ |
Arthur Jones | f9fc82a | 2008-07-25 01:49:11 -0700 | [diff] [blame] | 1039 | mc_kset = kset_create_and_add("mc", NULL, &edac_class->kset.kobj); |
| 1040 | if (!mc_kset) { |
| 1041 | err = -ENOMEM; |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 1042 | debugf1("%s() Failed to register '.../edac/mc'\n", __func__); |
| 1043 | goto fail_out; |
| 1044 | } |
| 1045 | |
| 1046 | debugf1("%s() Registered '.../edac/mc' kobject\n", __func__); |
| 1047 | |
| 1048 | return 0; |
| 1049 | |
| 1050 | |
| 1051 | /* error unwind stack */ |
| 1052 | fail_out: |
| 1053 | return err; |
| 1054 | } |
| 1055 | |
| 1056 | /* |
| 1057 | * edac_sysfs_teardown_mc_kset |
| 1058 | * |
| 1059 | * deconstruct the mc_ket for memory controllers |
| 1060 | */ |
| 1061 | void edac_sysfs_teardown_mc_kset(void) |
| 1062 | { |
Arthur Jones | f9fc82a | 2008-07-25 01:49:11 -0700 | [diff] [blame] | 1063 | kset_unregister(mc_kset); |
Doug Thompson | 8096cfa | 2007-07-19 01:50:27 -0700 | [diff] [blame] | 1064 | } |
| 1065 | |