Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1 | /* |
| 2 | * edac_mc kernel module |
| 3 | * (C) 2005 Linux Networx (http://lnxi.com) |
| 4 | * This file may be distributed under the terms of the |
| 5 | * GNU General Public License. |
| 6 | * |
| 7 | * Written by Thayne Harbaugh |
| 8 | * Based on work by Dan Hollis <goemon at anime dot net> and others. |
| 9 | * http://www.anime.net/~goemon/linux-ecc/ |
| 10 | * |
| 11 | * Modified by Dave Peterson and Doug Thompson |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | |
| 16 | #include <linux/config.h> |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 17 | #include <linux/module.h> |
| 18 | #include <linux/proc_fs.h> |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/types.h> |
| 21 | #include <linux/smp.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/sysctl.h> |
| 24 | #include <linux/highmem.h> |
| 25 | #include <linux/timer.h> |
| 26 | #include <linux/slab.h> |
| 27 | #include <linux/jiffies.h> |
| 28 | #include <linux/spinlock.h> |
| 29 | #include <linux/list.h> |
| 30 | #include <linux/sysdev.h> |
| 31 | #include <linux/ctype.h> |
Dave Peterson | f2fe42a | 2006-03-26 01:38:38 -0800 | [diff] [blame] | 32 | #include <linux/kthread.h> |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 33 | |
| 34 | #include <asm/uaccess.h> |
| 35 | #include <asm/page.h> |
| 36 | #include <asm/edac.h> |
| 37 | |
| 38 | #include "edac_mc.h" |
| 39 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 40 | #define EDAC_MC_VERSION "Ver: 2.0.0 " __DATE__ |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 41 | |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 42 | /* For now, disable the EDAC sysfs code. The sysfs interface that EDAC |
| 43 | * presents to user space needs more thought, and is likely to change |
| 44 | * substantially. |
| 45 | */ |
| 46 | #define DISABLE_EDAC_SYSFS |
| 47 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 48 | #ifdef CONFIG_EDAC_DEBUG |
| 49 | /* Values of 0 to 4 will generate output */ |
| 50 | int edac_debug_level = 1; |
| 51 | EXPORT_SYMBOL(edac_debug_level); |
| 52 | #endif |
| 53 | |
| 54 | /* EDAC Controls, setable by module parameter, and sysfs */ |
| 55 | static int log_ue = 1; |
| 56 | static int log_ce = 1; |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 57 | static int panic_on_ue; |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 58 | static int poll_msec = 1000; |
| 59 | |
| 60 | static int check_pci_parity = 0; /* default YES check PCI parity */ |
| 61 | static int panic_on_pci_parity; /* default no panic on PCI Parity */ |
| 62 | static atomic_t pci_parity_count = ATOMIC_INIT(0); |
| 63 | |
| 64 | /* lock to memory controller's control array */ |
| 65 | static DECLARE_MUTEX(mem_ctls_mutex); |
| 66 | static struct list_head mc_devices = LIST_HEAD_INIT(mc_devices); |
| 67 | |
Dave Peterson | f2fe42a | 2006-03-26 01:38:38 -0800 | [diff] [blame] | 68 | static struct task_struct *edac_thread; |
| 69 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 70 | /* Structure of the whitelist and blacklist arrays */ |
| 71 | struct edac_pci_device_list { |
| 72 | unsigned int vendor; /* Vendor ID */ |
| 73 | unsigned int device; /* Deviice ID */ |
| 74 | }; |
| 75 | |
| 76 | |
| 77 | #define MAX_LISTED_PCI_DEVICES 32 |
| 78 | |
| 79 | /* List of PCI devices (vendor-id:device-id) that should be skipped */ |
| 80 | static struct edac_pci_device_list pci_blacklist[MAX_LISTED_PCI_DEVICES]; |
| 81 | static int pci_blacklist_count; |
| 82 | |
| 83 | /* List of PCI devices (vendor-id:device-id) that should be scanned */ |
| 84 | static struct edac_pci_device_list pci_whitelist[MAX_LISTED_PCI_DEVICES]; |
| 85 | static int pci_whitelist_count ; |
| 86 | |
| 87 | /* START sysfs data and methods */ |
| 88 | |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 89 | #ifndef DISABLE_EDAC_SYSFS |
| 90 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 91 | static const char *mem_types[] = { |
| 92 | [MEM_EMPTY] = "Empty", |
| 93 | [MEM_RESERVED] = "Reserved", |
| 94 | [MEM_UNKNOWN] = "Unknown", |
| 95 | [MEM_FPM] = "FPM", |
| 96 | [MEM_EDO] = "EDO", |
| 97 | [MEM_BEDO] = "BEDO", |
| 98 | [MEM_SDR] = "Unbuffered-SDR", |
| 99 | [MEM_RDR] = "Registered-SDR", |
| 100 | [MEM_DDR] = "Unbuffered-DDR", |
| 101 | [MEM_RDDR] = "Registered-DDR", |
| 102 | [MEM_RMBS] = "RMBS" |
| 103 | }; |
| 104 | |
| 105 | static const char *dev_types[] = { |
| 106 | [DEV_UNKNOWN] = "Unknown", |
| 107 | [DEV_X1] = "x1", |
| 108 | [DEV_X2] = "x2", |
| 109 | [DEV_X4] = "x4", |
| 110 | [DEV_X8] = "x8", |
| 111 | [DEV_X16] = "x16", |
| 112 | [DEV_X32] = "x32", |
| 113 | [DEV_X64] = "x64" |
| 114 | }; |
| 115 | |
| 116 | static const char *edac_caps[] = { |
| 117 | [EDAC_UNKNOWN] = "Unknown", |
| 118 | [EDAC_NONE] = "None", |
| 119 | [EDAC_RESERVED] = "Reserved", |
| 120 | [EDAC_PARITY] = "PARITY", |
| 121 | [EDAC_EC] = "EC", |
| 122 | [EDAC_SECDED] = "SECDED", |
| 123 | [EDAC_S2ECD2ED] = "S2ECD2ED", |
| 124 | [EDAC_S4ECD4ED] = "S4ECD4ED", |
| 125 | [EDAC_S8ECD8ED] = "S8ECD8ED", |
| 126 | [EDAC_S16ECD16ED] = "S16ECD16ED" |
| 127 | }; |
| 128 | |
| 129 | |
| 130 | /* sysfs object: /sys/devices/system/edac */ |
| 131 | static struct sysdev_class edac_class = { |
| 132 | set_kset_name("edac"), |
| 133 | }; |
| 134 | |
| 135 | /* sysfs objects: |
| 136 | * /sys/devices/system/edac/mc |
| 137 | * /sys/devices/system/edac/pci |
| 138 | */ |
| 139 | static struct kobject edac_memctrl_kobj; |
| 140 | static struct kobject edac_pci_kobj; |
| 141 | |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 142 | /* We use these to wait for the reference counts on edac_memctrl_kobj and |
| 143 | * edac_pci_kobj to reach 0. |
| 144 | */ |
| 145 | static struct completion edac_memctrl_kobj_complete; |
| 146 | static struct completion edac_pci_kobj_complete; |
| 147 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 148 | /* |
| 149 | * /sys/devices/system/edac/mc; |
| 150 | * data structures and methods |
| 151 | */ |
Arjan van de Ven | 4136cab | 2006-03-11 03:27:15 -0800 | [diff] [blame] | 152 | #if 0 |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 153 | static ssize_t memctrl_string_show(void *ptr, char *buffer) |
| 154 | { |
| 155 | char *value = (char*) ptr; |
| 156 | return sprintf(buffer, "%s\n", value); |
| 157 | } |
Arjan van de Ven | 4136cab | 2006-03-11 03:27:15 -0800 | [diff] [blame] | 158 | #endif |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 159 | |
| 160 | static ssize_t memctrl_int_show(void *ptr, char *buffer) |
| 161 | { |
| 162 | int *value = (int*) ptr; |
| 163 | return sprintf(buffer, "%d\n", *value); |
| 164 | } |
| 165 | |
| 166 | static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count) |
| 167 | { |
| 168 | int *value = (int*) ptr; |
| 169 | |
| 170 | if (isdigit(*buffer)) |
| 171 | *value = simple_strtoul(buffer, NULL, 0); |
| 172 | |
| 173 | return count; |
| 174 | } |
| 175 | |
| 176 | struct memctrl_dev_attribute { |
| 177 | struct attribute attr; |
| 178 | void *value; |
| 179 | ssize_t (*show)(void *,char *); |
| 180 | ssize_t (*store)(void *, const char *, size_t); |
| 181 | }; |
| 182 | |
| 183 | /* Set of show/store abstract level functions for memory control object */ |
| 184 | static ssize_t |
| 185 | memctrl_dev_show(struct kobject *kobj, struct attribute *attr, char *buffer) |
| 186 | { |
| 187 | struct memctrl_dev_attribute *memctrl_dev; |
| 188 | memctrl_dev = (struct memctrl_dev_attribute*)attr; |
| 189 | |
| 190 | if (memctrl_dev->show) |
| 191 | return memctrl_dev->show(memctrl_dev->value, buffer); |
| 192 | return -EIO; |
| 193 | } |
| 194 | |
| 195 | static ssize_t |
| 196 | memctrl_dev_store(struct kobject *kobj, struct attribute *attr, |
| 197 | const char *buffer, size_t count) |
| 198 | { |
| 199 | struct memctrl_dev_attribute *memctrl_dev; |
| 200 | memctrl_dev = (struct memctrl_dev_attribute*)attr; |
| 201 | |
| 202 | if (memctrl_dev->store) |
| 203 | return memctrl_dev->store(memctrl_dev->value, buffer, count); |
| 204 | return -EIO; |
| 205 | } |
| 206 | |
| 207 | static struct sysfs_ops memctrlfs_ops = { |
| 208 | .show = memctrl_dev_show, |
| 209 | .store = memctrl_dev_store |
| 210 | }; |
| 211 | |
| 212 | #define MEMCTRL_ATTR(_name,_mode,_show,_store) \ |
| 213 | struct memctrl_dev_attribute attr_##_name = { \ |
| 214 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 215 | .value = &_name, \ |
| 216 | .show = _show, \ |
| 217 | .store = _store, \ |
| 218 | }; |
| 219 | |
| 220 | #define MEMCTRL_STRING_ATTR(_name,_data,_mode,_show,_store) \ |
| 221 | struct memctrl_dev_attribute attr_##_name = { \ |
| 222 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 223 | .value = _data, \ |
| 224 | .show = _show, \ |
| 225 | .store = _store, \ |
| 226 | }; |
| 227 | |
| 228 | /* cwrow<id> attribute f*/ |
Arjan van de Ven | 4136cab | 2006-03-11 03:27:15 -0800 | [diff] [blame] | 229 | #if 0 |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 230 | MEMCTRL_STRING_ATTR(mc_version,EDAC_MC_VERSION,S_IRUGO,memctrl_string_show,NULL); |
Arjan van de Ven | 4136cab | 2006-03-11 03:27:15 -0800 | [diff] [blame] | 231 | #endif |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 232 | |
| 233 | /* csrow<id> control files */ |
| 234 | MEMCTRL_ATTR(panic_on_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); |
| 235 | MEMCTRL_ATTR(log_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); |
| 236 | MEMCTRL_ATTR(log_ce,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); |
| 237 | MEMCTRL_ATTR(poll_msec,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); |
| 238 | |
| 239 | |
| 240 | /* Base Attributes of the memory ECC object */ |
| 241 | static struct memctrl_dev_attribute *memctrl_attr[] = { |
| 242 | &attr_panic_on_ue, |
| 243 | &attr_log_ue, |
| 244 | &attr_log_ce, |
| 245 | &attr_poll_msec, |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 246 | NULL, |
| 247 | }; |
| 248 | |
| 249 | /* Main MC kobject release() function */ |
| 250 | static void edac_memctrl_master_release(struct kobject *kobj) |
| 251 | { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 252 | debugf1("%s()\n", __func__); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 253 | complete(&edac_memctrl_kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | static struct kobj_type ktype_memctrl = { |
| 257 | .release = edac_memctrl_master_release, |
| 258 | .sysfs_ops = &memctrlfs_ops, |
| 259 | .default_attrs = (struct attribute **) memctrl_attr, |
| 260 | }; |
| 261 | |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 262 | #endif /* DISABLE_EDAC_SYSFS */ |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 263 | |
| 264 | /* Initialize the main sysfs entries for edac: |
| 265 | * /sys/devices/system/edac |
| 266 | * |
| 267 | * and children |
| 268 | * |
| 269 | * Return: 0 SUCCESS |
| 270 | * !0 FAILURE |
| 271 | */ |
| 272 | static int edac_sysfs_memctrl_setup(void) |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 273 | #ifdef DISABLE_EDAC_SYSFS |
| 274 | { |
| 275 | return 0; |
| 276 | } |
| 277 | #else |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 278 | { |
| 279 | int err=0; |
| 280 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 281 | debugf1("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 282 | |
| 283 | /* create the /sys/devices/system/edac directory */ |
| 284 | err = sysdev_class_register(&edac_class); |
| 285 | if (!err) { |
| 286 | /* Init the MC's kobject */ |
| 287 | memset(&edac_memctrl_kobj, 0, sizeof (edac_memctrl_kobj)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 288 | edac_memctrl_kobj.parent = &edac_class.kset.kobj; |
| 289 | edac_memctrl_kobj.ktype = &ktype_memctrl; |
| 290 | |
| 291 | /* generate sysfs "..../edac/mc" */ |
| 292 | err = kobject_set_name(&edac_memctrl_kobj,"mc"); |
| 293 | if (!err) { |
| 294 | /* FIXME: maybe new sysdev_create_subdir() */ |
| 295 | err = kobject_register(&edac_memctrl_kobj); |
| 296 | if (err) { |
| 297 | debugf1("Failed to register '.../edac/mc'\n"); |
| 298 | } else { |
| 299 | debugf1("Registered '.../edac/mc' kobject\n"); |
| 300 | } |
| 301 | } |
| 302 | } else { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 303 | debugf1("%s() error=%d\n", __func__, err); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | return err; |
| 307 | } |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 308 | #endif /* DISABLE_EDAC_SYSFS */ |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 309 | |
| 310 | /* |
| 311 | * MC teardown: |
| 312 | * the '..../edac/mc' kobject followed by '..../edac' itself |
| 313 | */ |
| 314 | static void edac_sysfs_memctrl_teardown(void) |
| 315 | { |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 316 | #ifndef DISABLE_EDAC_SYSFS |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 317 | debugf0("MC: " __FILE__ ": %s()\n", __func__); |
| 318 | |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 319 | /* Unregister the MC's kobject and wait for reference count to reach |
| 320 | * 0. |
| 321 | */ |
| 322 | init_completion(&edac_memctrl_kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 323 | kobject_unregister(&edac_memctrl_kobj); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 324 | wait_for_completion(&edac_memctrl_kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 325 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 326 | /* Unregister the 'edac' object */ |
| 327 | sysdev_class_unregister(&edac_class); |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 328 | #endif /* DISABLE_EDAC_SYSFS */ |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 329 | } |
| 330 | |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 331 | #ifndef DISABLE_EDAC_SYSFS |
| 332 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 333 | /* |
| 334 | * /sys/devices/system/edac/pci; |
| 335 | * data structures and methods |
| 336 | */ |
| 337 | |
| 338 | struct list_control { |
| 339 | struct edac_pci_device_list *list; |
| 340 | int *count; |
| 341 | }; |
| 342 | |
Arjan van de Ven | 4136cab | 2006-03-11 03:27:15 -0800 | [diff] [blame] | 343 | |
| 344 | #if 0 |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 345 | /* Output the list as: vendor_id:device:id<,vendor_id:device_id> */ |
| 346 | static ssize_t edac_pci_list_string_show(void *ptr, char *buffer) |
| 347 | { |
| 348 | struct list_control *listctl; |
| 349 | struct edac_pci_device_list *list; |
| 350 | char *p = buffer; |
| 351 | int len=0; |
| 352 | int i; |
| 353 | |
| 354 | listctl = ptr; |
| 355 | list = listctl->list; |
| 356 | |
| 357 | for (i = 0; i < *(listctl->count); i++, list++ ) { |
| 358 | if (len > 0) |
| 359 | len += snprintf(p + len, (PAGE_SIZE-len), ","); |
| 360 | |
| 361 | len += snprintf(p + len, |
| 362 | (PAGE_SIZE-len), |
| 363 | "%x:%x", |
| 364 | list->vendor,list->device); |
| 365 | } |
| 366 | |
| 367 | len += snprintf(p + len,(PAGE_SIZE-len), "\n"); |
| 368 | |
| 369 | return (ssize_t) len; |
| 370 | } |
| 371 | |
| 372 | /** |
| 373 | * |
| 374 | * Scan string from **s to **e looking for one 'vendor:device' tuple |
| 375 | * where each field is a hex value |
| 376 | * |
| 377 | * return 0 if an entry is NOT found |
| 378 | * return 1 if an entry is found |
| 379 | * fill in *vendor_id and *device_id with values found |
| 380 | * |
| 381 | * In both cases, make sure *s has been moved forward toward *e |
| 382 | */ |
| 383 | static int parse_one_device(const char **s,const char **e, |
| 384 | unsigned int *vendor_id, unsigned int *device_id) |
| 385 | { |
| 386 | const char *runner, *p; |
| 387 | |
| 388 | /* if null byte, we are done */ |
| 389 | if (!**s) { |
| 390 | (*s)++; /* keep *s moving */ |
| 391 | return 0; |
| 392 | } |
| 393 | |
| 394 | /* skip over newlines & whitespace */ |
| 395 | if ((**s == '\n') || isspace(**s)) { |
| 396 | (*s)++; |
| 397 | return 0; |
| 398 | } |
| 399 | |
| 400 | if (!isxdigit(**s)) { |
| 401 | (*s)++; |
| 402 | return 0; |
| 403 | } |
| 404 | |
| 405 | /* parse vendor_id */ |
| 406 | runner = *s; |
| 407 | while (runner < *e) { |
| 408 | /* scan for vendor:device delimiter */ |
| 409 | if (*runner == ':') { |
| 410 | *vendor_id = simple_strtol((char*) *s, (char**) &p, 16); |
| 411 | runner = p + 1; |
| 412 | break; |
| 413 | } |
| 414 | runner++; |
| 415 | } |
| 416 | |
| 417 | if (!isxdigit(*runner)) { |
| 418 | *s = ++runner; |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | /* parse device_id */ |
| 423 | if (runner < *e) { |
| 424 | *device_id = simple_strtol((char*)runner, (char**)&p, 16); |
| 425 | runner = p; |
| 426 | } |
| 427 | |
| 428 | *s = runner; |
| 429 | |
| 430 | return 1; |
| 431 | } |
| 432 | |
| 433 | static ssize_t edac_pci_list_string_store(void *ptr, const char *buffer, |
| 434 | size_t count) |
| 435 | { |
| 436 | struct list_control *listctl; |
| 437 | struct edac_pci_device_list *list; |
| 438 | unsigned int vendor_id, device_id; |
| 439 | const char *s, *e; |
| 440 | int *index; |
| 441 | |
| 442 | s = (char*)buffer; |
| 443 | e = s + count; |
| 444 | |
| 445 | listctl = ptr; |
| 446 | list = listctl->list; |
| 447 | index = listctl->count; |
| 448 | |
| 449 | *index = 0; |
| 450 | while (*index < MAX_LISTED_PCI_DEVICES) { |
| 451 | |
| 452 | if (parse_one_device(&s,&e,&vendor_id,&device_id)) { |
| 453 | list[ *index ].vendor = vendor_id; |
| 454 | list[ *index ].device = device_id; |
| 455 | (*index)++; |
| 456 | } |
| 457 | |
| 458 | /* check for all data consume */ |
| 459 | if (s >= e) |
| 460 | break; |
| 461 | } |
| 462 | |
| 463 | return count; |
| 464 | } |
| 465 | |
Arjan van de Ven | 4136cab | 2006-03-11 03:27:15 -0800 | [diff] [blame] | 466 | #endif |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 467 | static ssize_t edac_pci_int_show(void *ptr, char *buffer) |
| 468 | { |
| 469 | int *value = ptr; |
| 470 | return sprintf(buffer,"%d\n",*value); |
| 471 | } |
| 472 | |
| 473 | static ssize_t edac_pci_int_store(void *ptr, const char *buffer, size_t count) |
| 474 | { |
| 475 | int *value = ptr; |
| 476 | |
| 477 | if (isdigit(*buffer)) |
| 478 | *value = simple_strtoul(buffer,NULL,0); |
| 479 | |
| 480 | return count; |
| 481 | } |
| 482 | |
| 483 | struct edac_pci_dev_attribute { |
| 484 | struct attribute attr; |
| 485 | void *value; |
| 486 | ssize_t (*show)(void *,char *); |
| 487 | ssize_t (*store)(void *, const char *,size_t); |
| 488 | }; |
| 489 | |
| 490 | /* Set of show/store abstract level functions for PCI Parity object */ |
| 491 | static ssize_t edac_pci_dev_show(struct kobject *kobj, struct attribute *attr, |
| 492 | char *buffer) |
| 493 | { |
| 494 | struct edac_pci_dev_attribute *edac_pci_dev; |
| 495 | edac_pci_dev= (struct edac_pci_dev_attribute*)attr; |
| 496 | |
| 497 | if (edac_pci_dev->show) |
| 498 | return edac_pci_dev->show(edac_pci_dev->value, buffer); |
| 499 | return -EIO; |
| 500 | } |
| 501 | |
| 502 | static ssize_t edac_pci_dev_store(struct kobject *kobj, struct attribute *attr, |
| 503 | const char *buffer, size_t count) |
| 504 | { |
| 505 | struct edac_pci_dev_attribute *edac_pci_dev; |
| 506 | edac_pci_dev= (struct edac_pci_dev_attribute*)attr; |
| 507 | |
| 508 | if (edac_pci_dev->show) |
| 509 | return edac_pci_dev->store(edac_pci_dev->value, buffer, count); |
| 510 | return -EIO; |
| 511 | } |
| 512 | |
| 513 | static struct sysfs_ops edac_pci_sysfs_ops = { |
| 514 | .show = edac_pci_dev_show, |
| 515 | .store = edac_pci_dev_store |
| 516 | }; |
| 517 | |
| 518 | |
| 519 | #define EDAC_PCI_ATTR(_name,_mode,_show,_store) \ |
| 520 | struct edac_pci_dev_attribute edac_pci_attr_##_name = { \ |
| 521 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 522 | .value = &_name, \ |
| 523 | .show = _show, \ |
| 524 | .store = _store, \ |
| 525 | }; |
| 526 | |
| 527 | #define EDAC_PCI_STRING_ATTR(_name,_data,_mode,_show,_store) \ |
| 528 | struct edac_pci_dev_attribute edac_pci_attr_##_name = { \ |
| 529 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 530 | .value = _data, \ |
| 531 | .show = _show, \ |
| 532 | .store = _store, \ |
| 533 | }; |
| 534 | |
Arjan van de Ven | 4136cab | 2006-03-11 03:27:15 -0800 | [diff] [blame] | 535 | #if 0 |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 536 | static struct list_control pci_whitelist_control = { |
| 537 | .list = pci_whitelist, |
| 538 | .count = &pci_whitelist_count |
| 539 | }; |
| 540 | |
| 541 | static struct list_control pci_blacklist_control = { |
| 542 | .list = pci_blacklist, |
| 543 | .count = &pci_blacklist_count |
| 544 | }; |
| 545 | |
| 546 | /* whitelist attribute */ |
| 547 | EDAC_PCI_STRING_ATTR(pci_parity_whitelist, |
| 548 | &pci_whitelist_control, |
| 549 | S_IRUGO|S_IWUSR, |
| 550 | edac_pci_list_string_show, |
| 551 | edac_pci_list_string_store); |
| 552 | |
| 553 | EDAC_PCI_STRING_ATTR(pci_parity_blacklist, |
| 554 | &pci_blacklist_control, |
| 555 | S_IRUGO|S_IWUSR, |
| 556 | edac_pci_list_string_show, |
| 557 | edac_pci_list_string_store); |
Arjan van de Ven | 4136cab | 2006-03-11 03:27:15 -0800 | [diff] [blame] | 558 | #endif |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 559 | |
| 560 | /* PCI Parity control files */ |
| 561 | EDAC_PCI_ATTR(check_pci_parity,S_IRUGO|S_IWUSR,edac_pci_int_show,edac_pci_int_store); |
| 562 | EDAC_PCI_ATTR(panic_on_pci_parity,S_IRUGO|S_IWUSR,edac_pci_int_show,edac_pci_int_store); |
| 563 | EDAC_PCI_ATTR(pci_parity_count,S_IRUGO,edac_pci_int_show,NULL); |
| 564 | |
| 565 | /* Base Attributes of the memory ECC object */ |
| 566 | static struct edac_pci_dev_attribute *edac_pci_attr[] = { |
| 567 | &edac_pci_attr_check_pci_parity, |
| 568 | &edac_pci_attr_panic_on_pci_parity, |
| 569 | &edac_pci_attr_pci_parity_count, |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 570 | NULL, |
| 571 | }; |
| 572 | |
| 573 | /* No memory to release */ |
| 574 | static void edac_pci_release(struct kobject *kobj) |
| 575 | { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 576 | debugf1("%s()\n", __func__); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 577 | complete(&edac_pci_kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | static struct kobj_type ktype_edac_pci = { |
| 581 | .release = edac_pci_release, |
| 582 | .sysfs_ops = &edac_pci_sysfs_ops, |
| 583 | .default_attrs = (struct attribute **) edac_pci_attr, |
| 584 | }; |
| 585 | |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 586 | #endif /* DISABLE_EDAC_SYSFS */ |
| 587 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 588 | /** |
| 589 | * edac_sysfs_pci_setup() |
| 590 | * |
| 591 | */ |
| 592 | static int edac_sysfs_pci_setup(void) |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 593 | #ifdef DISABLE_EDAC_SYSFS |
| 594 | { |
| 595 | return 0; |
| 596 | } |
| 597 | #else |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 598 | { |
| 599 | int err; |
| 600 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 601 | debugf1("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 602 | |
| 603 | memset(&edac_pci_kobj, 0, sizeof(edac_pci_kobj)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 604 | edac_pci_kobj.parent = &edac_class.kset.kobj; |
| 605 | edac_pci_kobj.ktype = &ktype_edac_pci; |
| 606 | |
| 607 | err = kobject_set_name(&edac_pci_kobj, "pci"); |
| 608 | if (!err) { |
| 609 | /* Instanstiate the csrow object */ |
| 610 | /* FIXME: maybe new sysdev_create_subdir() */ |
| 611 | err = kobject_register(&edac_pci_kobj); |
| 612 | if (err) |
| 613 | debugf1("Failed to register '.../edac/pci'\n"); |
| 614 | else |
| 615 | debugf1("Registered '.../edac/pci' kobject\n"); |
| 616 | } |
| 617 | return err; |
| 618 | } |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 619 | #endif /* DISABLE_EDAC_SYSFS */ |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 620 | |
| 621 | static void edac_sysfs_pci_teardown(void) |
| 622 | { |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 623 | #ifndef DISABLE_EDAC_SYSFS |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 624 | debugf0("%s()\n", __func__); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 625 | init_completion(&edac_pci_kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 626 | kobject_unregister(&edac_pci_kobj); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 627 | wait_for_completion(&edac_pci_kobj_complete); |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 628 | #endif |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 629 | } |
| 630 | |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 631 | #ifndef DISABLE_EDAC_SYSFS |
| 632 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 633 | /* EDAC sysfs CSROW data structures and methods */ |
| 634 | |
| 635 | /* Set of more detailed csrow<id> attribute show/store functions */ |
| 636 | static ssize_t csrow_ch0_dimm_label_show(struct csrow_info *csrow, char *data) |
| 637 | { |
| 638 | ssize_t size = 0; |
| 639 | |
| 640 | if (csrow->nr_channels > 0) { |
| 641 | size = snprintf(data, EDAC_MC_LABEL_LEN,"%s\n", |
| 642 | csrow->channels[0].label); |
| 643 | } |
| 644 | return size; |
| 645 | } |
| 646 | |
| 647 | static ssize_t csrow_ch1_dimm_label_show(struct csrow_info *csrow, char *data) |
| 648 | { |
| 649 | ssize_t size = 0; |
| 650 | |
| 651 | if (csrow->nr_channels > 0) { |
| 652 | size = snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", |
| 653 | csrow->channels[1].label); |
| 654 | } |
| 655 | return size; |
| 656 | } |
| 657 | |
| 658 | static ssize_t csrow_ch0_dimm_label_store(struct csrow_info *csrow, |
| 659 | const char *data, size_t size) |
| 660 | { |
| 661 | ssize_t max_size = 0; |
| 662 | |
| 663 | if (csrow->nr_channels > 0) { |
| 664 | max_size = min((ssize_t)size,(ssize_t)EDAC_MC_LABEL_LEN-1); |
| 665 | strncpy(csrow->channels[0].label, data, max_size); |
| 666 | csrow->channels[0].label[max_size] = '\0'; |
| 667 | } |
| 668 | return size; |
| 669 | } |
| 670 | |
| 671 | static ssize_t csrow_ch1_dimm_label_store(struct csrow_info *csrow, |
| 672 | const char *data, size_t size) |
| 673 | { |
| 674 | ssize_t max_size = 0; |
| 675 | |
| 676 | if (csrow->nr_channels > 1) { |
| 677 | max_size = min((ssize_t)size,(ssize_t)EDAC_MC_LABEL_LEN-1); |
| 678 | strncpy(csrow->channels[1].label, data, max_size); |
| 679 | csrow->channels[1].label[max_size] = '\0'; |
| 680 | } |
| 681 | return max_size; |
| 682 | } |
| 683 | |
| 684 | static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data) |
| 685 | { |
| 686 | return sprintf(data,"%u\n", csrow->ue_count); |
| 687 | } |
| 688 | |
| 689 | static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data) |
| 690 | { |
| 691 | return sprintf(data,"%u\n", csrow->ce_count); |
| 692 | } |
| 693 | |
| 694 | static ssize_t csrow_ch0_ce_count_show(struct csrow_info *csrow, char *data) |
| 695 | { |
| 696 | ssize_t size = 0; |
| 697 | |
| 698 | if (csrow->nr_channels > 0) { |
| 699 | size = sprintf(data,"%u\n", csrow->channels[0].ce_count); |
| 700 | } |
| 701 | return size; |
| 702 | } |
| 703 | |
| 704 | static ssize_t csrow_ch1_ce_count_show(struct csrow_info *csrow, char *data) |
| 705 | { |
| 706 | ssize_t size = 0; |
| 707 | |
| 708 | if (csrow->nr_channels > 1) { |
| 709 | size = sprintf(data,"%u\n", csrow->channels[1].ce_count); |
| 710 | } |
| 711 | return size; |
| 712 | } |
| 713 | |
| 714 | static ssize_t csrow_size_show(struct csrow_info *csrow, char *data) |
| 715 | { |
| 716 | return sprintf(data,"%u\n", PAGES_TO_MiB(csrow->nr_pages)); |
| 717 | } |
| 718 | |
| 719 | static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data) |
| 720 | { |
| 721 | return sprintf(data,"%s\n", mem_types[csrow->mtype]); |
| 722 | } |
| 723 | |
| 724 | static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data) |
| 725 | { |
| 726 | return sprintf(data,"%s\n", dev_types[csrow->dtype]); |
| 727 | } |
| 728 | |
| 729 | static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data) |
| 730 | { |
| 731 | return sprintf(data,"%s\n", edac_caps[csrow->edac_mode]); |
| 732 | } |
| 733 | |
| 734 | struct csrowdev_attribute { |
| 735 | struct attribute attr; |
| 736 | ssize_t (*show)(struct csrow_info *,char *); |
| 737 | ssize_t (*store)(struct csrow_info *, const char *,size_t); |
| 738 | }; |
| 739 | |
| 740 | #define to_csrow(k) container_of(k, struct csrow_info, kobj) |
| 741 | #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr) |
| 742 | |
| 743 | /* Set of show/store higher level functions for csrow objects */ |
| 744 | static ssize_t csrowdev_show(struct kobject *kobj, struct attribute *attr, |
| 745 | char *buffer) |
| 746 | { |
| 747 | struct csrow_info *csrow = to_csrow(kobj); |
| 748 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); |
| 749 | |
| 750 | if (csrowdev_attr->show) |
| 751 | return csrowdev_attr->show(csrow, buffer); |
| 752 | return -EIO; |
| 753 | } |
| 754 | |
| 755 | static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr, |
| 756 | const char *buffer, size_t count) |
| 757 | { |
| 758 | struct csrow_info *csrow = to_csrow(kobj); |
| 759 | struct csrowdev_attribute * csrowdev_attr = to_csrowdev_attr(attr); |
| 760 | |
| 761 | if (csrowdev_attr->store) |
| 762 | return csrowdev_attr->store(csrow, buffer, count); |
| 763 | return -EIO; |
| 764 | } |
| 765 | |
| 766 | static struct sysfs_ops csrowfs_ops = { |
| 767 | .show = csrowdev_show, |
| 768 | .store = csrowdev_store |
| 769 | }; |
| 770 | |
| 771 | #define CSROWDEV_ATTR(_name,_mode,_show,_store) \ |
| 772 | struct csrowdev_attribute attr_##_name = { \ |
| 773 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 774 | .show = _show, \ |
| 775 | .store = _store, \ |
| 776 | }; |
| 777 | |
| 778 | /* cwrow<id>/attribute files */ |
| 779 | CSROWDEV_ATTR(size_mb,S_IRUGO,csrow_size_show,NULL); |
| 780 | CSROWDEV_ATTR(dev_type,S_IRUGO,csrow_dev_type_show,NULL); |
| 781 | CSROWDEV_ATTR(mem_type,S_IRUGO,csrow_mem_type_show,NULL); |
| 782 | CSROWDEV_ATTR(edac_mode,S_IRUGO,csrow_edac_mode_show,NULL); |
| 783 | CSROWDEV_ATTR(ue_count,S_IRUGO,csrow_ue_count_show,NULL); |
| 784 | CSROWDEV_ATTR(ce_count,S_IRUGO,csrow_ce_count_show,NULL); |
| 785 | CSROWDEV_ATTR(ch0_ce_count,S_IRUGO,csrow_ch0_ce_count_show,NULL); |
| 786 | CSROWDEV_ATTR(ch1_ce_count,S_IRUGO,csrow_ch1_ce_count_show,NULL); |
| 787 | |
| 788 | /* control/attribute files */ |
| 789 | CSROWDEV_ATTR(ch0_dimm_label,S_IRUGO|S_IWUSR, |
| 790 | csrow_ch0_dimm_label_show, |
| 791 | csrow_ch0_dimm_label_store); |
| 792 | CSROWDEV_ATTR(ch1_dimm_label,S_IRUGO|S_IWUSR, |
| 793 | csrow_ch1_dimm_label_show, |
| 794 | csrow_ch1_dimm_label_store); |
| 795 | |
| 796 | |
| 797 | /* Attributes of the CSROW<id> object */ |
| 798 | static struct csrowdev_attribute *csrow_attr[] = { |
| 799 | &attr_dev_type, |
| 800 | &attr_mem_type, |
| 801 | &attr_edac_mode, |
| 802 | &attr_size_mb, |
| 803 | &attr_ue_count, |
| 804 | &attr_ce_count, |
| 805 | &attr_ch0_ce_count, |
| 806 | &attr_ch1_ce_count, |
| 807 | &attr_ch0_dimm_label, |
| 808 | &attr_ch1_dimm_label, |
| 809 | NULL, |
| 810 | }; |
| 811 | |
| 812 | |
| 813 | /* No memory to release */ |
| 814 | static void edac_csrow_instance_release(struct kobject *kobj) |
| 815 | { |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 816 | struct csrow_info *cs; |
| 817 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 818 | debugf1("%s()\n", __func__); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 819 | cs = container_of(kobj, struct csrow_info, kobj); |
| 820 | complete(&cs->kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 821 | } |
| 822 | |
| 823 | static struct kobj_type ktype_csrow = { |
| 824 | .release = edac_csrow_instance_release, |
| 825 | .sysfs_ops = &csrowfs_ops, |
| 826 | .default_attrs = (struct attribute **) csrow_attr, |
| 827 | }; |
| 828 | |
| 829 | /* Create a CSROW object under specifed edac_mc_device */ |
| 830 | static int edac_create_csrow_object(struct kobject *edac_mci_kobj, |
| 831 | struct csrow_info *csrow, int index ) |
| 832 | { |
| 833 | int err = 0; |
| 834 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 835 | debugf0("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 836 | |
| 837 | memset(&csrow->kobj, 0, sizeof(csrow->kobj)); |
| 838 | |
| 839 | /* generate ..../edac/mc/mc<id>/csrow<index> */ |
| 840 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 841 | csrow->kobj.parent = edac_mci_kobj; |
| 842 | csrow->kobj.ktype = &ktype_csrow; |
| 843 | |
| 844 | /* name this instance of csrow<id> */ |
| 845 | err = kobject_set_name(&csrow->kobj,"csrow%d",index); |
| 846 | if (!err) { |
| 847 | /* Instanstiate the csrow object */ |
| 848 | err = kobject_register(&csrow->kobj); |
| 849 | if (err) |
| 850 | debugf0("Failed to register CSROW%d\n",index); |
| 851 | else |
| 852 | debugf0("Registered CSROW%d\n",index); |
| 853 | } |
| 854 | |
| 855 | return err; |
| 856 | } |
| 857 | |
| 858 | /* sysfs data structures and methods for the MCI kobjects */ |
| 859 | |
| 860 | static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, |
| 861 | const char *data, size_t count ) |
| 862 | { |
| 863 | int row, chan; |
| 864 | |
| 865 | mci->ue_noinfo_count = 0; |
| 866 | mci->ce_noinfo_count = 0; |
| 867 | mci->ue_count = 0; |
| 868 | mci->ce_count = 0; |
| 869 | for (row = 0; row < mci->nr_csrows; row++) { |
| 870 | struct csrow_info *ri = &mci->csrows[row]; |
| 871 | |
| 872 | ri->ue_count = 0; |
| 873 | ri->ce_count = 0; |
| 874 | for (chan = 0; chan < ri->nr_channels; chan++) |
| 875 | ri->channels[chan].ce_count = 0; |
| 876 | } |
| 877 | mci->start_time = jiffies; |
| 878 | |
| 879 | return count; |
| 880 | } |
| 881 | |
| 882 | static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data) |
| 883 | { |
| 884 | return sprintf(data,"%d\n", mci->ue_count); |
| 885 | } |
| 886 | |
| 887 | static ssize_t mci_ce_count_show(struct mem_ctl_info *mci, char *data) |
| 888 | { |
| 889 | return sprintf(data,"%d\n", mci->ce_count); |
| 890 | } |
| 891 | |
| 892 | static ssize_t mci_ce_noinfo_show(struct mem_ctl_info *mci, char *data) |
| 893 | { |
| 894 | return sprintf(data,"%d\n", mci->ce_noinfo_count); |
| 895 | } |
| 896 | |
| 897 | static ssize_t mci_ue_noinfo_show(struct mem_ctl_info *mci, char *data) |
| 898 | { |
| 899 | return sprintf(data,"%d\n", mci->ue_noinfo_count); |
| 900 | } |
| 901 | |
| 902 | static ssize_t mci_seconds_show(struct mem_ctl_info *mci, char *data) |
| 903 | { |
| 904 | return sprintf(data,"%ld\n", (jiffies - mci->start_time) / HZ); |
| 905 | } |
| 906 | |
| 907 | static ssize_t mci_mod_name_show(struct mem_ctl_info *mci, char *data) |
| 908 | { |
| 909 | return sprintf(data,"%s %s\n", mci->mod_name, mci->mod_ver); |
| 910 | } |
| 911 | |
| 912 | static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data) |
| 913 | { |
| 914 | return sprintf(data,"%s\n", mci->ctl_name); |
| 915 | } |
| 916 | |
| 917 | static int mci_output_edac_cap(char *buf, unsigned long edac_cap) |
| 918 | { |
| 919 | char *p = buf; |
| 920 | int bit_idx; |
| 921 | |
| 922 | for (bit_idx = 0; bit_idx < 8 * sizeof(edac_cap); bit_idx++) { |
| 923 | if ((edac_cap >> bit_idx) & 0x1) |
| 924 | p += sprintf(p, "%s ", edac_caps[bit_idx]); |
| 925 | } |
| 926 | |
| 927 | return p - buf; |
| 928 | } |
| 929 | |
| 930 | static ssize_t mci_edac_capability_show(struct mem_ctl_info *mci, char *data) |
| 931 | { |
| 932 | char *p = data; |
| 933 | |
| 934 | p += mci_output_edac_cap(p,mci->edac_ctl_cap); |
| 935 | p += sprintf(p, "\n"); |
| 936 | |
| 937 | return p - data; |
| 938 | } |
| 939 | |
| 940 | static ssize_t mci_edac_current_capability_show(struct mem_ctl_info *mci, |
| 941 | char *data) |
| 942 | { |
| 943 | char *p = data; |
| 944 | |
| 945 | p += mci_output_edac_cap(p,mci->edac_cap); |
| 946 | p += sprintf(p, "\n"); |
| 947 | |
| 948 | return p - data; |
| 949 | } |
| 950 | |
| 951 | static int mci_output_mtype_cap(char *buf, unsigned long mtype_cap) |
| 952 | { |
| 953 | char *p = buf; |
| 954 | int bit_idx; |
| 955 | |
| 956 | for (bit_idx = 0; bit_idx < 8 * sizeof(mtype_cap); bit_idx++) { |
| 957 | if ((mtype_cap >> bit_idx) & 0x1) |
| 958 | p += sprintf(p, "%s ", mem_types[bit_idx]); |
| 959 | } |
| 960 | |
| 961 | return p - buf; |
| 962 | } |
| 963 | |
| 964 | static ssize_t mci_supported_mem_type_show(struct mem_ctl_info *mci, char *data) |
| 965 | { |
| 966 | char *p = data; |
| 967 | |
| 968 | p += mci_output_mtype_cap(p,mci->mtype_cap); |
| 969 | p += sprintf(p, "\n"); |
| 970 | |
| 971 | return p - data; |
| 972 | } |
| 973 | |
| 974 | static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) |
| 975 | { |
| 976 | int total_pages, csrow_idx; |
| 977 | |
| 978 | for (total_pages = csrow_idx = 0; csrow_idx < mci->nr_csrows; |
| 979 | csrow_idx++) { |
| 980 | struct csrow_info *csrow = &mci->csrows[csrow_idx]; |
| 981 | |
| 982 | if (!csrow->nr_pages) |
| 983 | continue; |
| 984 | total_pages += csrow->nr_pages; |
| 985 | } |
| 986 | |
| 987 | return sprintf(data,"%u\n", PAGES_TO_MiB(total_pages)); |
| 988 | } |
| 989 | |
| 990 | struct mcidev_attribute { |
| 991 | struct attribute attr; |
| 992 | ssize_t (*show)(struct mem_ctl_info *,char *); |
| 993 | ssize_t (*store)(struct mem_ctl_info *, const char *,size_t); |
| 994 | }; |
| 995 | |
| 996 | #define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj) |
| 997 | #define to_mcidev_attr(a) container_of(a, struct mcidev_attribute, attr) |
| 998 | |
| 999 | static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr, |
| 1000 | char *buffer) |
| 1001 | { |
| 1002 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); |
| 1003 | struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr); |
| 1004 | |
| 1005 | if (mcidev_attr->show) |
| 1006 | return mcidev_attr->show(mem_ctl_info, buffer); |
| 1007 | return -EIO; |
| 1008 | } |
| 1009 | |
| 1010 | static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr, |
| 1011 | const char *buffer, size_t count) |
| 1012 | { |
| 1013 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); |
| 1014 | struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr); |
| 1015 | |
| 1016 | if (mcidev_attr->store) |
| 1017 | return mcidev_attr->store(mem_ctl_info, buffer, count); |
| 1018 | return -EIO; |
| 1019 | } |
| 1020 | |
| 1021 | static struct sysfs_ops mci_ops = { |
| 1022 | .show = mcidev_show, |
| 1023 | .store = mcidev_store |
| 1024 | }; |
| 1025 | |
| 1026 | #define MCIDEV_ATTR(_name,_mode,_show,_store) \ |
| 1027 | struct mcidev_attribute mci_attr_##_name = { \ |
| 1028 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 1029 | .show = _show, \ |
| 1030 | .store = _store, \ |
| 1031 | }; |
| 1032 | |
| 1033 | /* Control file */ |
| 1034 | MCIDEV_ATTR(reset_counters,S_IWUSR,NULL,mci_reset_counters_store); |
| 1035 | |
| 1036 | /* Attribute files */ |
| 1037 | MCIDEV_ATTR(mc_name,S_IRUGO,mci_ctl_name_show,NULL); |
| 1038 | MCIDEV_ATTR(module_name,S_IRUGO,mci_mod_name_show,NULL); |
| 1039 | MCIDEV_ATTR(edac_capability,S_IRUGO,mci_edac_capability_show,NULL); |
| 1040 | MCIDEV_ATTR(size_mb,S_IRUGO,mci_size_mb_show,NULL); |
| 1041 | MCIDEV_ATTR(seconds_since_reset,S_IRUGO,mci_seconds_show,NULL); |
| 1042 | MCIDEV_ATTR(ue_noinfo_count,S_IRUGO,mci_ue_noinfo_show,NULL); |
| 1043 | MCIDEV_ATTR(ce_noinfo_count,S_IRUGO,mci_ce_noinfo_show,NULL); |
| 1044 | MCIDEV_ATTR(ue_count,S_IRUGO,mci_ue_count_show,NULL); |
| 1045 | MCIDEV_ATTR(ce_count,S_IRUGO,mci_ce_count_show,NULL); |
| 1046 | MCIDEV_ATTR(edac_current_capability,S_IRUGO, |
| 1047 | mci_edac_current_capability_show,NULL); |
| 1048 | MCIDEV_ATTR(supported_mem_type,S_IRUGO, |
| 1049 | mci_supported_mem_type_show,NULL); |
| 1050 | |
| 1051 | |
| 1052 | static struct mcidev_attribute *mci_attr[] = { |
| 1053 | &mci_attr_reset_counters, |
| 1054 | &mci_attr_module_name, |
| 1055 | &mci_attr_mc_name, |
| 1056 | &mci_attr_edac_capability, |
| 1057 | &mci_attr_edac_current_capability, |
| 1058 | &mci_attr_supported_mem_type, |
| 1059 | &mci_attr_size_mb, |
| 1060 | &mci_attr_seconds_since_reset, |
| 1061 | &mci_attr_ue_noinfo_count, |
| 1062 | &mci_attr_ce_noinfo_count, |
| 1063 | &mci_attr_ue_count, |
| 1064 | &mci_attr_ce_count, |
| 1065 | NULL |
| 1066 | }; |
| 1067 | |
| 1068 | |
| 1069 | /* |
| 1070 | * Release of a MC controlling instance |
| 1071 | */ |
| 1072 | static void edac_mci_instance_release(struct kobject *kobj) |
| 1073 | { |
| 1074 | struct mem_ctl_info *mci; |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1075 | |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1076 | mci = to_mci(kobj); |
| 1077 | debugf0("%s() idx=%d\n", __func__, mci->mc_idx); |
| 1078 | complete(&mci->kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1079 | } |
| 1080 | |
| 1081 | static struct kobj_type ktype_mci = { |
| 1082 | .release = edac_mci_instance_release, |
| 1083 | .sysfs_ops = &mci_ops, |
| 1084 | .default_attrs = (struct attribute **) mci_attr, |
| 1085 | }; |
| 1086 | |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 1087 | #endif /* DISABLE_EDAC_SYSFS */ |
| 1088 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1089 | #define EDAC_DEVICE_SYMLINK "device" |
| 1090 | |
| 1091 | /* |
| 1092 | * Create a new Memory Controller kobject instance, |
| 1093 | * mc<id> under the 'mc' directory |
| 1094 | * |
| 1095 | * Return: |
| 1096 | * 0 Success |
| 1097 | * !0 Failure |
| 1098 | */ |
| 1099 | static int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 1100 | #ifdef DISABLE_EDAC_SYSFS |
| 1101 | { |
| 1102 | return 0; |
| 1103 | } |
| 1104 | #else |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1105 | { |
| 1106 | int i; |
| 1107 | int err; |
| 1108 | struct csrow_info *csrow; |
| 1109 | struct kobject *edac_mci_kobj=&mci->edac_mci_kobj; |
| 1110 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1111 | debugf0("%s() idx=%d\n", __func__, mci->mc_idx); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1112 | |
| 1113 | memset(edac_mci_kobj, 0, sizeof(*edac_mci_kobj)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1114 | |
| 1115 | /* set the name of the mc<id> object */ |
| 1116 | err = kobject_set_name(edac_mci_kobj,"mc%d",mci->mc_idx); |
| 1117 | if (err) |
| 1118 | return err; |
| 1119 | |
| 1120 | /* link to our parent the '..../edac/mc' object */ |
| 1121 | edac_mci_kobj->parent = &edac_memctrl_kobj; |
| 1122 | edac_mci_kobj->ktype = &ktype_mci; |
| 1123 | |
| 1124 | /* register the mc<id> kobject */ |
| 1125 | err = kobject_register(edac_mci_kobj); |
| 1126 | if (err) |
| 1127 | return err; |
| 1128 | |
| 1129 | /* create a symlink for the device */ |
| 1130 | err = sysfs_create_link(edac_mci_kobj, &mci->pdev->dev.kobj, |
| 1131 | EDAC_DEVICE_SYMLINK); |
Dave Peterson | 6e5a874 | 2006-03-26 01:38:48 -0800 | [diff] [blame] | 1132 | if (err) |
| 1133 | goto fail0; |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1134 | |
| 1135 | /* Make directories for each CSROW object |
| 1136 | * under the mc<id> kobject |
| 1137 | */ |
| 1138 | for (i = 0; i < mci->nr_csrows; i++) { |
| 1139 | |
| 1140 | csrow = &mci->csrows[i]; |
| 1141 | |
| 1142 | /* Only expose populated CSROWs */ |
| 1143 | if (csrow->nr_pages > 0) { |
| 1144 | err = edac_create_csrow_object(edac_mci_kobj,csrow,i); |
| 1145 | if (err) |
Dave Peterson | 6e5a874 | 2006-03-26 01:38:48 -0800 | [diff] [blame] | 1146 | goto fail1; |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1147 | } |
| 1148 | } |
| 1149 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1150 | return 0; |
| 1151 | |
| 1152 | |
| 1153 | /* CSROW error: backout what has already been registered, */ |
Dave Peterson | 6e5a874 | 2006-03-26 01:38:48 -0800 | [diff] [blame] | 1154 | fail1: |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1155 | for ( i--; i >= 0; i--) { |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1156 | if (csrow->nr_pages > 0) { |
| 1157 | init_completion(&csrow->kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1158 | kobject_unregister(&mci->csrows[i].kobj); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1159 | wait_for_completion(&csrow->kobj_complete); |
| 1160 | } |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1161 | } |
| 1162 | |
Dave Peterson | 6e5a874 | 2006-03-26 01:38:48 -0800 | [diff] [blame] | 1163 | fail0: |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1164 | init_completion(&mci->kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1165 | kobject_unregister(edac_mci_kobj); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1166 | wait_for_completion(&mci->kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1167 | |
| 1168 | return err; |
| 1169 | } |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 1170 | #endif /* DISABLE_EDAC_SYSFS */ |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1171 | |
| 1172 | /* |
| 1173 | * remove a Memory Controller instance |
| 1174 | */ |
| 1175 | static void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) |
| 1176 | { |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 1177 | #ifndef DISABLE_EDAC_SYSFS |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1178 | int i; |
| 1179 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1180 | debugf0("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1181 | |
| 1182 | /* remove all csrow kobjects */ |
| 1183 | for (i = 0; i < mci->nr_csrows; i++) { |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1184 | if (mci->csrows[i].nr_pages > 0) { |
| 1185 | init_completion(&mci->csrows[i].kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1186 | kobject_unregister(&mci->csrows[i].kobj); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1187 | wait_for_completion(&mci->csrows[i].kobj_complete); |
| 1188 | } |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1189 | } |
| 1190 | |
| 1191 | sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1192 | init_completion(&mci->kobj_complete); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1193 | kobject_unregister(&mci->edac_mci_kobj); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1194 | wait_for_completion(&mci->kobj_complete); |
Dave Peterson | ceb2ca9 | 2006-03-13 21:20:50 -0800 | [diff] [blame] | 1195 | #endif /* DISABLE_EDAC_SYSFS */ |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | /* END OF sysfs data and methods */ |
| 1199 | |
| 1200 | #ifdef CONFIG_EDAC_DEBUG |
| 1201 | |
| 1202 | EXPORT_SYMBOL(edac_mc_dump_channel); |
| 1203 | |
| 1204 | void edac_mc_dump_channel(struct channel_info *chan) |
| 1205 | { |
| 1206 | debugf4("\tchannel = %p\n", chan); |
| 1207 | debugf4("\tchannel->chan_idx = %d\n", chan->chan_idx); |
| 1208 | debugf4("\tchannel->ce_count = %d\n", chan->ce_count); |
| 1209 | debugf4("\tchannel->label = '%s'\n", chan->label); |
| 1210 | debugf4("\tchannel->csrow = %p\n\n", chan->csrow); |
| 1211 | } |
| 1212 | |
| 1213 | |
| 1214 | EXPORT_SYMBOL(edac_mc_dump_csrow); |
| 1215 | |
| 1216 | void edac_mc_dump_csrow(struct csrow_info *csrow) |
| 1217 | { |
| 1218 | debugf4("\tcsrow = %p\n", csrow); |
| 1219 | debugf4("\tcsrow->csrow_idx = %d\n", csrow->csrow_idx); |
| 1220 | debugf4("\tcsrow->first_page = 0x%lx\n", |
| 1221 | csrow->first_page); |
| 1222 | debugf4("\tcsrow->last_page = 0x%lx\n", csrow->last_page); |
| 1223 | debugf4("\tcsrow->page_mask = 0x%lx\n", csrow->page_mask); |
| 1224 | debugf4("\tcsrow->nr_pages = 0x%x\n", csrow->nr_pages); |
| 1225 | debugf4("\tcsrow->nr_channels = %d\n", |
| 1226 | csrow->nr_channels); |
| 1227 | debugf4("\tcsrow->channels = %p\n", csrow->channels); |
| 1228 | debugf4("\tcsrow->mci = %p\n\n", csrow->mci); |
| 1229 | } |
| 1230 | |
| 1231 | |
| 1232 | EXPORT_SYMBOL(edac_mc_dump_mci); |
| 1233 | |
| 1234 | void edac_mc_dump_mci(struct mem_ctl_info *mci) |
| 1235 | { |
| 1236 | debugf3("\tmci = %p\n", mci); |
| 1237 | debugf3("\tmci->mtype_cap = %lx\n", mci->mtype_cap); |
| 1238 | debugf3("\tmci->edac_ctl_cap = %lx\n", mci->edac_ctl_cap); |
| 1239 | debugf3("\tmci->edac_cap = %lx\n", mci->edac_cap); |
| 1240 | debugf4("\tmci->edac_check = %p\n", mci->edac_check); |
| 1241 | debugf3("\tmci->nr_csrows = %d, csrows = %p\n", |
| 1242 | mci->nr_csrows, mci->csrows); |
| 1243 | debugf3("\tpdev = %p\n", mci->pdev); |
| 1244 | debugf3("\tmod_name:ctl_name = %s:%s\n", |
| 1245 | mci->mod_name, mci->ctl_name); |
| 1246 | debugf3("\tpvt_info = %p\n\n", mci->pvt_info); |
| 1247 | } |
| 1248 | |
| 1249 | |
| 1250 | #endif /* CONFIG_EDAC_DEBUG */ |
| 1251 | |
| 1252 | /* 'ptr' points to a possibly unaligned item X such that sizeof(X) is 'size'. |
| 1253 | * Adjust 'ptr' so that its alignment is at least as stringent as what the |
| 1254 | * compiler would provide for X and return the aligned result. |
| 1255 | * |
| 1256 | * If 'size' is a constant, the compiler will optimize this whole function |
| 1257 | * down to either a no-op or the addition of a constant to the value of 'ptr'. |
| 1258 | */ |
| 1259 | static inline char * align_ptr (void *ptr, unsigned size) |
| 1260 | { |
| 1261 | unsigned align, r; |
| 1262 | |
| 1263 | /* Here we assume that the alignment of a "long long" is the most |
| 1264 | * stringent alignment that the compiler will ever provide by default. |
| 1265 | * As far as I know, this is a reasonable assumption. |
| 1266 | */ |
| 1267 | if (size > sizeof(long)) |
| 1268 | align = sizeof(long long); |
| 1269 | else if (size > sizeof(int)) |
| 1270 | align = sizeof(long); |
| 1271 | else if (size > sizeof(short)) |
| 1272 | align = sizeof(int); |
| 1273 | else if (size > sizeof(char)) |
| 1274 | align = sizeof(short); |
| 1275 | else |
| 1276 | return (char *) ptr; |
| 1277 | |
| 1278 | r = size % align; |
| 1279 | |
| 1280 | if (r == 0) |
| 1281 | return (char *) ptr; |
| 1282 | |
| 1283 | return (char *) (((unsigned long) ptr) + align - r); |
| 1284 | } |
| 1285 | |
| 1286 | |
| 1287 | EXPORT_SYMBOL(edac_mc_alloc); |
| 1288 | |
| 1289 | /** |
| 1290 | * edac_mc_alloc: Allocate a struct mem_ctl_info structure |
| 1291 | * @size_pvt: size of private storage needed |
| 1292 | * @nr_csrows: Number of CWROWS needed for this MC |
| 1293 | * @nr_chans: Number of channels for the MC |
| 1294 | * |
| 1295 | * Everything is kmalloc'ed as one big chunk - more efficient. |
| 1296 | * Only can be used if all structures have the same lifetime - otherwise |
| 1297 | * you have to allocate and initialize your own structures. |
| 1298 | * |
| 1299 | * Use edac_mc_free() to free mc structures allocated by this function. |
| 1300 | * |
| 1301 | * Returns: |
| 1302 | * NULL allocation failed |
| 1303 | * struct mem_ctl_info pointer |
| 1304 | */ |
| 1305 | struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows, |
| 1306 | unsigned nr_chans) |
| 1307 | { |
| 1308 | struct mem_ctl_info *mci; |
| 1309 | struct csrow_info *csi, *csrow; |
| 1310 | struct channel_info *chi, *chp, *chan; |
| 1311 | void *pvt; |
| 1312 | unsigned size; |
| 1313 | int row, chn; |
| 1314 | |
| 1315 | /* Figure out the offsets of the various items from the start of an mc |
| 1316 | * structure. We want the alignment of each item to be at least as |
| 1317 | * stringent as what the compiler would provide if we could simply |
| 1318 | * hardcode everything into a single struct. |
| 1319 | */ |
| 1320 | mci = (struct mem_ctl_info *) 0; |
| 1321 | csi = (struct csrow_info *)align_ptr(&mci[1], sizeof(*csi)); |
| 1322 | chi = (struct channel_info *) |
| 1323 | align_ptr(&csi[nr_csrows], sizeof(*chi)); |
| 1324 | pvt = align_ptr(&chi[nr_chans * nr_csrows], sz_pvt); |
| 1325 | size = ((unsigned long) pvt) + sz_pvt; |
| 1326 | |
| 1327 | if ((mci = kmalloc(size, GFP_KERNEL)) == NULL) |
| 1328 | return NULL; |
| 1329 | |
| 1330 | /* Adjust pointers so they point within the memory we just allocated |
| 1331 | * rather than an imaginary chunk of memory located at address 0. |
| 1332 | */ |
| 1333 | csi = (struct csrow_info *) (((char *) mci) + ((unsigned long) csi)); |
| 1334 | chi = (struct channel_info *) (((char *) mci) + ((unsigned long) chi)); |
| 1335 | pvt = sz_pvt ? (((char *) mci) + ((unsigned long) pvt)) : NULL; |
| 1336 | |
| 1337 | memset(mci, 0, size); /* clear all fields */ |
| 1338 | |
| 1339 | mci->csrows = csi; |
| 1340 | mci->pvt_info = pvt; |
| 1341 | mci->nr_csrows = nr_csrows; |
| 1342 | |
| 1343 | for (row = 0; row < nr_csrows; row++) { |
| 1344 | csrow = &csi[row]; |
| 1345 | csrow->csrow_idx = row; |
| 1346 | csrow->mci = mci; |
| 1347 | csrow->nr_channels = nr_chans; |
| 1348 | chp = &chi[row * nr_chans]; |
| 1349 | csrow->channels = chp; |
| 1350 | |
| 1351 | for (chn = 0; chn < nr_chans; chn++) { |
| 1352 | chan = &chp[chn]; |
| 1353 | chan->chan_idx = chn; |
| 1354 | chan->csrow = csrow; |
| 1355 | } |
| 1356 | } |
| 1357 | |
| 1358 | return mci; |
| 1359 | } |
| 1360 | |
| 1361 | |
| 1362 | EXPORT_SYMBOL(edac_mc_free); |
| 1363 | |
| 1364 | /** |
| 1365 | * edac_mc_free: Free a previously allocated 'mci' structure |
| 1366 | * @mci: pointer to a struct mem_ctl_info structure |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1367 | */ |
| 1368 | void edac_mc_free(struct mem_ctl_info *mci) |
| 1369 | { |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1370 | kfree(mci); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1371 | } |
| 1372 | |
| 1373 | |
| 1374 | |
| 1375 | EXPORT_SYMBOL(edac_mc_find_mci_by_pdev); |
| 1376 | |
| 1377 | struct mem_ctl_info *edac_mc_find_mci_by_pdev(struct pci_dev *pdev) |
| 1378 | { |
| 1379 | struct mem_ctl_info *mci; |
| 1380 | struct list_head *item; |
| 1381 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1382 | debugf3("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1383 | |
| 1384 | list_for_each(item, &mc_devices) { |
| 1385 | mci = list_entry(item, struct mem_ctl_info, link); |
| 1386 | |
| 1387 | if (mci->pdev == pdev) |
| 1388 | return mci; |
| 1389 | } |
| 1390 | |
| 1391 | return NULL; |
| 1392 | } |
| 1393 | |
| 1394 | static int add_mc_to_global_list (struct mem_ctl_info *mci) |
| 1395 | { |
| 1396 | struct list_head *item, *insert_before; |
| 1397 | struct mem_ctl_info *p; |
| 1398 | int i; |
| 1399 | |
| 1400 | if (list_empty(&mc_devices)) { |
| 1401 | mci->mc_idx = 0; |
| 1402 | insert_before = &mc_devices; |
| 1403 | } else { |
| 1404 | if (edac_mc_find_mci_by_pdev(mci->pdev)) { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1405 | edac_printk(KERN_WARNING, EDAC_MC, |
| 1406 | "%s (%s) %s %s already assigned %d\n", |
| 1407 | mci->pdev->dev.bus_id, |
| 1408 | pci_name(mci->pdev), mci->mod_name, |
| 1409 | mci->ctl_name, mci->mc_idx); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1410 | return 1; |
| 1411 | } |
| 1412 | |
| 1413 | insert_before = NULL; |
| 1414 | i = 0; |
| 1415 | |
| 1416 | list_for_each(item, &mc_devices) { |
| 1417 | p = list_entry(item, struct mem_ctl_info, link); |
| 1418 | |
| 1419 | if (p->mc_idx != i) { |
| 1420 | insert_before = item; |
| 1421 | break; |
| 1422 | } |
| 1423 | |
| 1424 | i++; |
| 1425 | } |
| 1426 | |
| 1427 | mci->mc_idx = i; |
| 1428 | |
| 1429 | if (insert_before == NULL) |
| 1430 | insert_before = &mc_devices; |
| 1431 | } |
| 1432 | |
| 1433 | list_add_tail_rcu(&mci->link, insert_before); |
| 1434 | return 0; |
| 1435 | } |
| 1436 | |
| 1437 | |
Dave Peterson | a1d03fc | 2006-03-26 01:38:46 -0800 | [diff] [blame] | 1438 | static void complete_mc_list_del (struct rcu_head *head) |
| 1439 | { |
| 1440 | struct mem_ctl_info *mci; |
| 1441 | |
| 1442 | mci = container_of(head, struct mem_ctl_info, rcu); |
| 1443 | INIT_LIST_HEAD(&mci->link); |
| 1444 | complete(&mci->complete); |
| 1445 | } |
| 1446 | |
| 1447 | |
| 1448 | static void del_mc_from_global_list (struct mem_ctl_info *mci) |
| 1449 | { |
| 1450 | list_del_rcu(&mci->link); |
| 1451 | init_completion(&mci->complete); |
| 1452 | call_rcu(&mci->rcu, complete_mc_list_del); |
| 1453 | wait_for_completion(&mci->complete); |
| 1454 | } |
| 1455 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1456 | |
| 1457 | EXPORT_SYMBOL(edac_mc_add_mc); |
| 1458 | |
| 1459 | /** |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1460 | * edac_mc_add_mc: Insert the 'mci' structure into the mci global list and |
| 1461 | * create sysfs entries associated with mci structure |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1462 | * @mci: pointer to the mci structure to be added to the list |
| 1463 | * |
| 1464 | * Return: |
| 1465 | * 0 Success |
| 1466 | * !0 Failure |
| 1467 | */ |
| 1468 | |
| 1469 | /* FIXME - should a warning be printed if no error detection? correction? */ |
| 1470 | int edac_mc_add_mc(struct mem_ctl_info *mci) |
| 1471 | { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1472 | debugf0("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1473 | #ifdef CONFIG_EDAC_DEBUG |
| 1474 | if (edac_debug_level >= 3) |
| 1475 | edac_mc_dump_mci(mci); |
| 1476 | if (edac_debug_level >= 4) { |
| 1477 | int i; |
| 1478 | |
| 1479 | for (i = 0; i < mci->nr_csrows; i++) { |
| 1480 | int j; |
| 1481 | edac_mc_dump_csrow(&mci->csrows[i]); |
| 1482 | for (j = 0; j < mci->csrows[i].nr_channels; j++) |
| 1483 | edac_mc_dump_channel(&mci->csrows[i]. |
| 1484 | channels[j]); |
| 1485 | } |
| 1486 | } |
| 1487 | #endif |
| 1488 | down(&mem_ctls_mutex); |
| 1489 | |
| 1490 | if (add_mc_to_global_list(mci)) |
Dave Peterson | 028a7b6 | 2006-03-26 01:38:47 -0800 | [diff] [blame] | 1491 | goto fail0; |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1492 | |
| 1493 | /* set load time so that error rate can be tracked */ |
| 1494 | mci->start_time = jiffies; |
| 1495 | |
| 1496 | if (edac_create_sysfs_mci_device(mci)) { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1497 | edac_mc_printk(mci, KERN_WARNING, |
| 1498 | "failed to create sysfs device\n"); |
Dave Peterson | 028a7b6 | 2006-03-26 01:38:47 -0800 | [diff] [blame] | 1499 | goto fail1; |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1500 | } |
| 1501 | |
| 1502 | /* Report action taken */ |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1503 | edac_mc_printk(mci, KERN_INFO, "Giving out device to %s %s: PCI %s\n", |
| 1504 | mci->mod_name, mci->ctl_name, pci_name(mci->pdev)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1505 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1506 | up(&mem_ctls_mutex); |
Dave Peterson | 028a7b6 | 2006-03-26 01:38:47 -0800 | [diff] [blame] | 1507 | return 0; |
| 1508 | |
| 1509 | fail1: |
| 1510 | del_mc_from_global_list(mci); |
| 1511 | |
| 1512 | fail0: |
| 1513 | up(&mem_ctls_mutex); |
| 1514 | return 1; |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1515 | } |
| 1516 | |
| 1517 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1518 | EXPORT_SYMBOL(edac_mc_del_mc); |
| 1519 | |
| 1520 | /** |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1521 | * edac_mc_del_mc: Remove sysfs entries for specified mci structure and |
| 1522 | * remove mci structure from global list |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1523 | * @mci: Pointer to struct mem_ctl_info structure |
| 1524 | * |
| 1525 | * Returns: |
| 1526 | * 0 Success |
| 1527 | * 1 Failure |
| 1528 | */ |
| 1529 | int edac_mc_del_mc(struct mem_ctl_info *mci) |
| 1530 | { |
| 1531 | int rc = 1; |
| 1532 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1533 | debugf0("MC%d: %s()\n", mci->mc_idx, __func__); |
Dave Peterson | 472678e | 2006-03-26 01:38:49 -0800 | [diff] [blame^] | 1534 | edac_remove_sysfs_mci_device(mci); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1535 | down(&mem_ctls_mutex); |
| 1536 | del_mc_from_global_list(mci); |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1537 | edac_printk(KERN_INFO, EDAC_MC, |
| 1538 | "Removed device %d for %s %s: PCI %s\n", mci->mc_idx, |
| 1539 | mci->mod_name, mci->ctl_name, pci_name(mci->pdev)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1540 | rc = 0; |
| 1541 | up(&mem_ctls_mutex); |
| 1542 | |
| 1543 | return rc; |
| 1544 | } |
| 1545 | |
| 1546 | |
| 1547 | EXPORT_SYMBOL(edac_mc_scrub_block); |
| 1548 | |
| 1549 | void edac_mc_scrub_block(unsigned long page, unsigned long offset, |
| 1550 | u32 size) |
| 1551 | { |
| 1552 | struct page *pg; |
| 1553 | void *virt_addr; |
| 1554 | unsigned long flags = 0; |
| 1555 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1556 | debugf3("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1557 | |
| 1558 | /* ECC error page was not in our memory. Ignore it. */ |
| 1559 | if(!pfn_valid(page)) |
| 1560 | return; |
| 1561 | |
| 1562 | /* Find the actual page structure then map it and fix */ |
| 1563 | pg = pfn_to_page(page); |
| 1564 | |
| 1565 | if (PageHighMem(pg)) |
| 1566 | local_irq_save(flags); |
| 1567 | |
| 1568 | virt_addr = kmap_atomic(pg, KM_BOUNCE_READ); |
| 1569 | |
| 1570 | /* Perform architecture specific atomic scrub operation */ |
| 1571 | atomic_scrub(virt_addr + offset, size); |
| 1572 | |
| 1573 | /* Unmap and complete */ |
| 1574 | kunmap_atomic(virt_addr, KM_BOUNCE_READ); |
| 1575 | |
| 1576 | if (PageHighMem(pg)) |
| 1577 | local_irq_restore(flags); |
| 1578 | } |
| 1579 | |
| 1580 | |
| 1581 | /* FIXME - should return -1 */ |
| 1582 | EXPORT_SYMBOL(edac_mc_find_csrow_by_page); |
| 1583 | |
| 1584 | int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, |
| 1585 | unsigned long page) |
| 1586 | { |
| 1587 | struct csrow_info *csrows = mci->csrows; |
| 1588 | int row, i; |
| 1589 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1590 | debugf1("MC%d: %s(): 0x%lx\n", mci->mc_idx, __func__, page); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1591 | row = -1; |
| 1592 | |
| 1593 | for (i = 0; i < mci->nr_csrows; i++) { |
| 1594 | struct csrow_info *csrow = &csrows[i]; |
| 1595 | |
| 1596 | if (csrow->nr_pages == 0) |
| 1597 | continue; |
| 1598 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1599 | debugf3("MC%d: %s(): first(0x%lx) page(0x%lx) last(0x%lx) " |
| 1600 | "mask(0x%lx)\n", mci->mc_idx, __func__, |
| 1601 | csrow->first_page, page, csrow->last_page, |
| 1602 | csrow->page_mask); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1603 | |
| 1604 | if ((page >= csrow->first_page) && |
| 1605 | (page <= csrow->last_page) && |
| 1606 | ((page & csrow->page_mask) == |
| 1607 | (csrow->first_page & csrow->page_mask))) { |
| 1608 | row = i; |
| 1609 | break; |
| 1610 | } |
| 1611 | } |
| 1612 | |
| 1613 | if (row == -1) |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1614 | edac_mc_printk(mci, KERN_ERR, |
| 1615 | "could not look up page error address %lx\n", |
| 1616 | (unsigned long) page); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1617 | |
| 1618 | return row; |
| 1619 | } |
| 1620 | |
| 1621 | |
| 1622 | EXPORT_SYMBOL(edac_mc_handle_ce); |
| 1623 | |
| 1624 | /* FIXME - setable log (warning/emerg) levels */ |
| 1625 | /* FIXME - integrate with evlog: http://evlog.sourceforge.net/ */ |
| 1626 | void edac_mc_handle_ce(struct mem_ctl_info *mci, |
| 1627 | unsigned long page_frame_number, |
| 1628 | unsigned long offset_in_page, |
| 1629 | unsigned long syndrome, int row, int channel, |
| 1630 | const char *msg) |
| 1631 | { |
| 1632 | unsigned long remapped_page; |
| 1633 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1634 | debugf3("MC%d: %s()\n", mci->mc_idx, __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1635 | |
| 1636 | /* FIXME - maybe make panic on INTERNAL ERROR an option */ |
| 1637 | if (row >= mci->nr_csrows || row < 0) { |
| 1638 | /* something is wrong */ |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1639 | edac_mc_printk(mci, KERN_ERR, |
| 1640 | "INTERNAL ERROR: row out of range " |
| 1641 | "(%d >= %d)\n", row, mci->nr_csrows); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1642 | edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); |
| 1643 | return; |
| 1644 | } |
| 1645 | if (channel >= mci->csrows[row].nr_channels || channel < 0) { |
| 1646 | /* something is wrong */ |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1647 | edac_mc_printk(mci, KERN_ERR, |
| 1648 | "INTERNAL ERROR: channel out of range " |
| 1649 | "(%d >= %d)\n", channel, |
| 1650 | mci->csrows[row].nr_channels); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1651 | edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); |
| 1652 | return; |
| 1653 | } |
| 1654 | |
| 1655 | if (log_ce) |
| 1656 | /* FIXME - put in DIMM location */ |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1657 | edac_mc_printk(mci, KERN_WARNING, |
| 1658 | "CE page 0x%lx, offset 0x%lx, grain %d, syndrome " |
| 1659 | "0x%lx, row %d, channel %d, label \"%s\": %s\n", |
| 1660 | page_frame_number, offset_in_page, |
| 1661 | mci->csrows[row].grain, syndrome, row, channel, |
| 1662 | mci->csrows[row].channels[channel].label, msg); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1663 | |
| 1664 | mci->ce_count++; |
| 1665 | mci->csrows[row].ce_count++; |
| 1666 | mci->csrows[row].channels[channel].ce_count++; |
| 1667 | |
| 1668 | if (mci->scrub_mode & SCRUB_SW_SRC) { |
| 1669 | /* |
| 1670 | * Some MC's can remap memory so that it is still available |
| 1671 | * at a different address when PCI devices map into memory. |
| 1672 | * MC's that can't do this lose the memory where PCI devices |
| 1673 | * are mapped. This mapping is MC dependant and so we call |
| 1674 | * back into the MC driver for it to map the MC page to |
| 1675 | * a physical (CPU) page which can then be mapped to a virtual |
| 1676 | * page - which can then be scrubbed. |
| 1677 | */ |
| 1678 | remapped_page = mci->ctl_page_to_phys ? |
| 1679 | mci->ctl_page_to_phys(mci, page_frame_number) : |
| 1680 | page_frame_number; |
| 1681 | |
| 1682 | edac_mc_scrub_block(remapped_page, offset_in_page, |
| 1683 | mci->csrows[row].grain); |
| 1684 | } |
| 1685 | } |
| 1686 | |
| 1687 | |
| 1688 | EXPORT_SYMBOL(edac_mc_handle_ce_no_info); |
| 1689 | |
| 1690 | void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, |
| 1691 | const char *msg) |
| 1692 | { |
| 1693 | if (log_ce) |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1694 | edac_mc_printk(mci, KERN_WARNING, |
| 1695 | "CE - no information available: %s\n", msg); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1696 | mci->ce_noinfo_count++; |
| 1697 | mci->ce_count++; |
| 1698 | } |
| 1699 | |
| 1700 | |
| 1701 | EXPORT_SYMBOL(edac_mc_handle_ue); |
| 1702 | |
| 1703 | void edac_mc_handle_ue(struct mem_ctl_info *mci, |
| 1704 | unsigned long page_frame_number, |
| 1705 | unsigned long offset_in_page, int row, |
| 1706 | const char *msg) |
| 1707 | { |
| 1708 | int len = EDAC_MC_LABEL_LEN * 4; |
| 1709 | char labels[len + 1]; |
| 1710 | char *pos = labels; |
| 1711 | int chan; |
| 1712 | int chars; |
| 1713 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1714 | debugf3("MC%d: %s()\n", mci->mc_idx, __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1715 | |
| 1716 | /* FIXME - maybe make panic on INTERNAL ERROR an option */ |
| 1717 | if (row >= mci->nr_csrows || row < 0) { |
| 1718 | /* something is wrong */ |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1719 | edac_mc_printk(mci, KERN_ERR, |
| 1720 | "INTERNAL ERROR: row out of range " |
| 1721 | "(%d >= %d)\n", row, mci->nr_csrows); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1722 | edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR"); |
| 1723 | return; |
| 1724 | } |
| 1725 | |
| 1726 | chars = snprintf(pos, len + 1, "%s", |
| 1727 | mci->csrows[row].channels[0].label); |
| 1728 | len -= chars; |
| 1729 | pos += chars; |
| 1730 | for (chan = 1; (chan < mci->csrows[row].nr_channels) && (len > 0); |
| 1731 | chan++) { |
| 1732 | chars = snprintf(pos, len + 1, ":%s", |
| 1733 | mci->csrows[row].channels[chan].label); |
| 1734 | len -= chars; |
| 1735 | pos += chars; |
| 1736 | } |
| 1737 | |
| 1738 | if (log_ue) |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1739 | edac_mc_printk(mci, KERN_EMERG, |
| 1740 | "UE page 0x%lx, offset 0x%lx, grain %d, row %d, " |
| 1741 | "labels \"%s\": %s\n", page_frame_number, |
| 1742 | offset_in_page, mci->csrows[row].grain, row, labels, |
| 1743 | msg); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1744 | |
| 1745 | if (panic_on_ue) |
| 1746 | panic |
| 1747 | ("EDAC MC%d: UE page 0x%lx, offset 0x%lx, grain %d, row %d," |
| 1748 | " labels \"%s\": %s\n", mci->mc_idx, |
| 1749 | page_frame_number, offset_in_page, |
| 1750 | mci->csrows[row].grain, row, labels, msg); |
| 1751 | |
| 1752 | mci->ue_count++; |
| 1753 | mci->csrows[row].ue_count++; |
| 1754 | } |
| 1755 | |
| 1756 | |
| 1757 | EXPORT_SYMBOL(edac_mc_handle_ue_no_info); |
| 1758 | |
| 1759 | void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, |
| 1760 | const char *msg) |
| 1761 | { |
| 1762 | if (panic_on_ue) |
| 1763 | panic("EDAC MC%d: Uncorrected Error", mci->mc_idx); |
| 1764 | |
| 1765 | if (log_ue) |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1766 | edac_mc_printk(mci, KERN_WARNING, |
| 1767 | "UE - no information available: %s\n", msg); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1768 | mci->ue_noinfo_count++; |
| 1769 | mci->ue_count++; |
| 1770 | } |
| 1771 | |
| 1772 | |
| 1773 | #ifdef CONFIG_PCI |
| 1774 | |
| 1775 | static u16 get_pci_parity_status(struct pci_dev *dev, int secondary) |
| 1776 | { |
| 1777 | int where; |
| 1778 | u16 status; |
| 1779 | |
| 1780 | where = secondary ? PCI_SEC_STATUS : PCI_STATUS; |
| 1781 | pci_read_config_word(dev, where, &status); |
| 1782 | |
| 1783 | /* If we get back 0xFFFF then we must suspect that the card has been pulled but |
| 1784 | the Linux PCI layer has not yet finished cleaning up. We don't want to report |
| 1785 | on such devices */ |
| 1786 | |
| 1787 | if (status == 0xFFFF) { |
| 1788 | u32 sanity; |
| 1789 | pci_read_config_dword(dev, 0, &sanity); |
| 1790 | if (sanity == 0xFFFFFFFF) |
| 1791 | return 0; |
| 1792 | } |
| 1793 | status &= PCI_STATUS_DETECTED_PARITY | PCI_STATUS_SIG_SYSTEM_ERROR | |
| 1794 | PCI_STATUS_PARITY; |
| 1795 | |
| 1796 | if (status) |
| 1797 | /* reset only the bits we are interested in */ |
| 1798 | pci_write_config_word(dev, where, status); |
| 1799 | |
| 1800 | return status; |
| 1801 | } |
| 1802 | |
| 1803 | typedef void (*pci_parity_check_fn_t) (struct pci_dev *dev); |
| 1804 | |
| 1805 | /* Clear any PCI parity errors logged by this device. */ |
| 1806 | static void edac_pci_dev_parity_clear( struct pci_dev *dev ) |
| 1807 | { |
| 1808 | u8 header_type; |
| 1809 | |
| 1810 | get_pci_parity_status(dev, 0); |
| 1811 | |
| 1812 | /* read the device TYPE, looking for bridges */ |
| 1813 | pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); |
| 1814 | |
| 1815 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) |
| 1816 | get_pci_parity_status(dev, 1); |
| 1817 | } |
| 1818 | |
| 1819 | /* |
| 1820 | * PCI Parity polling |
| 1821 | * |
| 1822 | */ |
| 1823 | static void edac_pci_dev_parity_test(struct pci_dev *dev) |
| 1824 | { |
| 1825 | u16 status; |
| 1826 | u8 header_type; |
| 1827 | |
| 1828 | /* read the STATUS register on this device |
| 1829 | */ |
| 1830 | status = get_pci_parity_status(dev, 0); |
| 1831 | |
| 1832 | debugf2("PCI STATUS= 0x%04x %s\n", status, dev->dev.bus_id ); |
| 1833 | |
| 1834 | /* check the status reg for errors */ |
| 1835 | if (status) { |
| 1836 | if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1837 | edac_printk(KERN_CRIT, EDAC_PCI, |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1838 | "Signaled System Error on %s\n", |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1839 | pci_name(dev)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1840 | |
| 1841 | if (status & (PCI_STATUS_PARITY)) { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1842 | edac_printk(KERN_CRIT, EDAC_PCI, |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1843 | "Master Data Parity Error on %s\n", |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1844 | pci_name(dev)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1845 | |
| 1846 | atomic_inc(&pci_parity_count); |
| 1847 | } |
| 1848 | |
| 1849 | if (status & (PCI_STATUS_DETECTED_PARITY)) { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1850 | edac_printk(KERN_CRIT, EDAC_PCI, |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1851 | "Detected Parity Error on %s\n", |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1852 | pci_name(dev)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1853 | |
| 1854 | atomic_inc(&pci_parity_count); |
| 1855 | } |
| 1856 | } |
| 1857 | |
| 1858 | /* read the device TYPE, looking for bridges */ |
| 1859 | pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); |
| 1860 | |
| 1861 | debugf2("PCI HEADER TYPE= 0x%02x %s\n", header_type, dev->dev.bus_id ); |
| 1862 | |
| 1863 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
| 1864 | /* On bridges, need to examine secondary status register */ |
| 1865 | status = get_pci_parity_status(dev, 1); |
| 1866 | |
| 1867 | debugf2("PCI SEC_STATUS= 0x%04x %s\n", |
| 1868 | status, dev->dev.bus_id ); |
| 1869 | |
| 1870 | /* check the secondary status reg for errors */ |
| 1871 | if (status) { |
| 1872 | if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1873 | edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1874 | "Signaled System Error on %s\n", |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1875 | pci_name(dev)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1876 | |
| 1877 | if (status & (PCI_STATUS_PARITY)) { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1878 | edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " |
| 1879 | "Master Data Parity Error on " |
| 1880 | "%s\n", pci_name(dev)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1881 | |
| 1882 | atomic_inc(&pci_parity_count); |
| 1883 | } |
| 1884 | |
| 1885 | if (status & (PCI_STATUS_DETECTED_PARITY)) { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1886 | edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1887 | "Detected Parity Error on %s\n", |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1888 | pci_name(dev)); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1889 | |
| 1890 | atomic_inc(&pci_parity_count); |
| 1891 | } |
| 1892 | } |
| 1893 | } |
| 1894 | } |
| 1895 | |
| 1896 | /* |
| 1897 | * check_dev_on_list: Scan for a PCI device on a white/black list |
| 1898 | * @list: an EDAC &edac_pci_device_list white/black list pointer |
| 1899 | * @free_index: index of next free entry on the list |
| 1900 | * @pci_dev: PCI Device pointer |
| 1901 | * |
| 1902 | * see if list contains the device. |
| 1903 | * |
| 1904 | * Returns: 0 not found |
| 1905 | * 1 found on list |
| 1906 | */ |
| 1907 | static int check_dev_on_list(struct edac_pci_device_list *list, int free_index, |
| 1908 | struct pci_dev *dev) |
| 1909 | { |
| 1910 | int i; |
| 1911 | int rc = 0; /* Assume not found */ |
| 1912 | unsigned short vendor=dev->vendor; |
| 1913 | unsigned short device=dev->device; |
| 1914 | |
| 1915 | /* Scan the list, looking for a vendor/device match |
| 1916 | */ |
| 1917 | for (i = 0; i < free_index; i++, list++ ) { |
| 1918 | if ( (list->vendor == vendor ) && |
| 1919 | (list->device == device )) { |
| 1920 | rc = 1; |
| 1921 | break; |
| 1922 | } |
| 1923 | } |
| 1924 | |
| 1925 | return rc; |
| 1926 | } |
| 1927 | |
| 1928 | /* |
| 1929 | * pci_dev parity list iterator |
| 1930 | * Scan the PCI device list for one iteration, looking for SERRORs |
| 1931 | * Master Parity ERRORS or Parity ERRORs on primary or secondary devices |
| 1932 | */ |
| 1933 | static inline void edac_pci_dev_parity_iterator(pci_parity_check_fn_t fn) |
| 1934 | { |
| 1935 | struct pci_dev *dev=NULL; |
| 1936 | |
| 1937 | /* request for kernel access to the next PCI device, if any, |
| 1938 | * and while we are looking at it have its reference count |
| 1939 | * bumped until we are done with it |
| 1940 | */ |
| 1941 | while((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { |
| 1942 | |
| 1943 | /* if whitelist exists then it has priority, so only scan those |
| 1944 | * devices on the whitelist |
| 1945 | */ |
| 1946 | if (pci_whitelist_count > 0 ) { |
| 1947 | if (check_dev_on_list(pci_whitelist, |
| 1948 | pci_whitelist_count, dev)) |
| 1949 | fn(dev); |
| 1950 | } else { |
| 1951 | /* |
| 1952 | * if no whitelist, then check if this devices is |
| 1953 | * blacklisted |
| 1954 | */ |
| 1955 | if (!check_dev_on_list(pci_blacklist, |
| 1956 | pci_blacklist_count, dev)) |
| 1957 | fn(dev); |
| 1958 | } |
| 1959 | } |
| 1960 | } |
| 1961 | |
| 1962 | static void do_pci_parity_check(void) |
| 1963 | { |
| 1964 | unsigned long flags; |
| 1965 | int before_count; |
| 1966 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 1967 | debugf3("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 1968 | |
| 1969 | if (!check_pci_parity) |
| 1970 | return; |
| 1971 | |
| 1972 | before_count = atomic_read(&pci_parity_count); |
| 1973 | |
| 1974 | /* scan all PCI devices looking for a Parity Error on devices and |
| 1975 | * bridges |
| 1976 | */ |
| 1977 | local_irq_save(flags); |
| 1978 | edac_pci_dev_parity_iterator(edac_pci_dev_parity_test); |
| 1979 | local_irq_restore(flags); |
| 1980 | |
| 1981 | /* Only if operator has selected panic on PCI Error */ |
| 1982 | if (panic_on_pci_parity) { |
| 1983 | /* If the count is different 'after' from 'before' */ |
| 1984 | if (before_count != atomic_read(&pci_parity_count)) |
| 1985 | panic("EDAC: PCI Parity Error"); |
| 1986 | } |
| 1987 | } |
| 1988 | |
| 1989 | |
| 1990 | static inline void clear_pci_parity_errors(void) |
| 1991 | { |
| 1992 | /* Clear any PCI bus parity errors that devices initially have logged |
| 1993 | * in their registers. |
| 1994 | */ |
| 1995 | edac_pci_dev_parity_iterator(edac_pci_dev_parity_clear); |
| 1996 | } |
| 1997 | |
| 1998 | |
| 1999 | #else /* CONFIG_PCI */ |
| 2000 | |
| 2001 | |
| 2002 | static inline void do_pci_parity_check(void) |
| 2003 | { |
| 2004 | /* no-op */ |
| 2005 | } |
| 2006 | |
| 2007 | |
| 2008 | static inline void clear_pci_parity_errors(void) |
| 2009 | { |
| 2010 | /* no-op */ |
| 2011 | } |
| 2012 | |
| 2013 | |
| 2014 | #endif /* CONFIG_PCI */ |
| 2015 | |
| 2016 | /* |
| 2017 | * Iterate over all MC instances and check for ECC, et al, errors |
| 2018 | */ |
| 2019 | static inline void check_mc_devices (void) |
| 2020 | { |
| 2021 | unsigned long flags; |
| 2022 | struct list_head *item; |
| 2023 | struct mem_ctl_info *mci; |
| 2024 | |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 2025 | debugf3("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2026 | |
| 2027 | /* during poll, have interrupts off */ |
| 2028 | local_irq_save(flags); |
| 2029 | |
| 2030 | list_for_each(item, &mc_devices) { |
| 2031 | mci = list_entry(item, struct mem_ctl_info, link); |
| 2032 | |
| 2033 | if (mci->edac_check != NULL) |
| 2034 | mci->edac_check(mci); |
| 2035 | } |
| 2036 | |
| 2037 | local_irq_restore(flags); |
| 2038 | } |
| 2039 | |
| 2040 | |
| 2041 | /* |
| 2042 | * Check MC status every poll_msec. |
| 2043 | * Check PCI status every poll_msec as well. |
| 2044 | * |
| 2045 | * This where the work gets done for edac. |
| 2046 | * |
| 2047 | * SMP safe, doesn't use NMI, and auto-rate-limits. |
| 2048 | */ |
| 2049 | static void do_edac_check(void) |
| 2050 | { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 2051 | debugf3("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2052 | check_mc_devices(); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2053 | do_pci_parity_check(); |
| 2054 | } |
| 2055 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2056 | static int edac_kernel_thread(void *arg) |
| 2057 | { |
Dave Peterson | f2fe42a | 2006-03-26 01:38:38 -0800 | [diff] [blame] | 2058 | while (!kthread_should_stop()) { |
| 2059 | do_edac_check(); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2060 | |
| 2061 | /* goto sleep for the interval */ |
Dave Peterson | f2fe42a | 2006-03-26 01:38:38 -0800 | [diff] [blame] | 2062 | schedule_timeout_interruptible((HZ * poll_msec) / 1000); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2063 | try_to_freeze(); |
| 2064 | } |
| 2065 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2066 | return 0; |
| 2067 | } |
| 2068 | |
| 2069 | /* |
| 2070 | * edac_mc_init |
| 2071 | * module initialization entry point |
| 2072 | */ |
| 2073 | static int __init edac_mc_init(void) |
| 2074 | { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 2075 | edac_printk(KERN_INFO, EDAC_MC, EDAC_MC_VERSION "\n"); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2076 | |
| 2077 | /* |
| 2078 | * Harvest and clear any boot/initialization PCI parity errors |
| 2079 | * |
| 2080 | * FIXME: This only clears errors logged by devices present at time of |
| 2081 | * module initialization. We should also do an initial clear |
| 2082 | * of each newly hotplugged device. |
| 2083 | */ |
| 2084 | clear_pci_parity_errors(); |
| 2085 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2086 | /* Create the MC sysfs entires */ |
| 2087 | if (edac_sysfs_memctrl_setup()) { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 2088 | edac_printk(KERN_ERR, EDAC_MC, |
| 2089 | "Error initializing sysfs code\n"); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2090 | return -ENODEV; |
| 2091 | } |
| 2092 | |
| 2093 | /* Create the PCI parity sysfs entries */ |
| 2094 | if (edac_sysfs_pci_setup()) { |
| 2095 | edac_sysfs_memctrl_teardown(); |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 2096 | edac_printk(KERN_ERR, EDAC_MC, |
| 2097 | "EDAC PCI: Error initializing sysfs code\n"); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2098 | return -ENODEV; |
| 2099 | } |
| 2100 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2101 | /* create our kernel thread */ |
Dave Peterson | f2fe42a | 2006-03-26 01:38:38 -0800 | [diff] [blame] | 2102 | edac_thread = kthread_run(edac_kernel_thread, NULL, "kedac"); |
| 2103 | if (IS_ERR(edac_thread)) { |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2104 | /* remove the sysfs entries */ |
| 2105 | edac_sysfs_memctrl_teardown(); |
| 2106 | edac_sysfs_pci_teardown(); |
Dave Peterson | f2fe42a | 2006-03-26 01:38:38 -0800 | [diff] [blame] | 2107 | return PTR_ERR(edac_thread); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2108 | } |
| 2109 | |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2110 | return 0; |
| 2111 | } |
| 2112 | |
| 2113 | |
| 2114 | /* |
| 2115 | * edac_mc_exit() |
| 2116 | * module exit/termination functioni |
| 2117 | */ |
| 2118 | static void __exit edac_mc_exit(void) |
| 2119 | { |
Dave Peterson | 537fba2 | 2006-03-26 01:38:40 -0800 | [diff] [blame] | 2120 | debugf0("%s()\n", __func__); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2121 | |
Dave Peterson | f2fe42a | 2006-03-26 01:38:38 -0800 | [diff] [blame] | 2122 | kthread_stop(edac_thread); |
Alan Cox | da9bb1d | 2006-01-18 17:44:13 -0800 | [diff] [blame] | 2123 | |
| 2124 | /* tear down the sysfs device */ |
| 2125 | edac_sysfs_memctrl_teardown(); |
| 2126 | edac_sysfs_pci_teardown(); |
| 2127 | } |
| 2128 | |
| 2129 | |
| 2130 | |
| 2131 | |
| 2132 | module_init(edac_mc_init); |
| 2133 | module_exit(edac_mc_exit); |
| 2134 | |
| 2135 | MODULE_LICENSE("GPL"); |
| 2136 | MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh et al\n" |
| 2137 | "Based on.work by Dan Hollis et al"); |
| 2138 | MODULE_DESCRIPTION("Core library routines for MC reporting"); |
| 2139 | |
| 2140 | module_param(panic_on_ue, int, 0644); |
| 2141 | MODULE_PARM_DESC(panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); |
| 2142 | module_param(check_pci_parity, int, 0644); |
| 2143 | MODULE_PARM_DESC(check_pci_parity, "Check for PCI bus parity errors: 0=off 1=on"); |
| 2144 | module_param(panic_on_pci_parity, int, 0644); |
| 2145 | MODULE_PARM_DESC(panic_on_pci_parity, "Panic on PCI Bus Parity error: 0=off 1=on"); |
| 2146 | module_param(log_ue, int, 0644); |
| 2147 | MODULE_PARM_DESC(log_ue, "Log uncorrectable error to console: 0=off 1=on"); |
| 2148 | module_param(log_ce, int, 0644); |
| 2149 | MODULE_PARM_DESC(log_ce, "Log correctable error to console: 0=off 1=on"); |
| 2150 | module_param(poll_msec, int, 0644); |
| 2151 | MODULE_PARM_DESC(poll_msec, "Polling period in milliseconds"); |
| 2152 | #ifdef CONFIG_EDAC_DEBUG |
| 2153 | module_param(edac_debug_level, int, 0644); |
| 2154 | MODULE_PARM_DESC(edac_debug_level, "Debug level"); |
| 2155 | #endif |