| 1 | |
| 2 | IPF Machine Check (MC) error inject tool |
| 3 | ======================================== |
| 4 | |
| 5 | IPF Machine Check (MC) error inject tool is used to inject MC |
| 6 | errors from Linux. The tool is a test bed for IPF MC work flow including |
| 7 | hardware correctable error handling, OS recoverable error handling, MC |
| 8 | event logging, etc. |
| 9 | |
| 10 | The tool includes two parts: a kernel driver and a user application |
| 11 | sample. The driver provides interface to PAL to inject error |
| 12 | and query error injection capabilities. The driver code is in |
| 13 | arch/ia64/kernel/err_inject.c. The application sample (shown below) |
| 14 | provides a combination of various errors and calls the driver's interface |
| 15 | (sysfs interface) to inject errors or query error injection capabilities. |
| 16 | |
| 17 | The tool can be used to test Intel IPF machine MC handling capabilities. |
| 18 | It's especially useful for people who can not access hardware MC injection |
| 19 | tool to inject error. It's also very useful to integrate with other |
| 20 | software test suits to do stressful testing on IPF. |
| 21 | |
| 22 | Below is a sample application as part of the whole tool. The sample |
| 23 | can be used as a working test tool. Or it can be expanded to include |
| 24 | more features. It also can be a integrated into a library or other user |
| 25 | application to have more thorough test. |
| 26 | |
| 27 | The sample application takes err.conf as error configuration input. GCC |
| 28 | compiles the code. After you install err_inject driver, you can run |
| 29 | this sample application to inject errors. |
| 30 | |
| 31 | Errata: Itanium 2 Processors Specification Update lists some errata against |
| 32 | the pal_mc_error_inject PAL procedure. The following err.conf has been tested |
| 33 | on latest Montecito PAL. |
| 34 | |
| 35 | err.conf: |
| 36 | |
| 37 | #This is configuration file for err_inject_tool. |
| 38 | #The format of the each line is: |
| 39 | #cpu, loop, interval, err_type_info, err_struct_info, err_data_buffer |
| 40 | #where |
| 41 | # cpu: logical cpu number the error will be inject in. |
| 42 | # loop: times the error will be injected. |
| 43 | # interval: In second. every so often one error is injected. |
| 44 | # err_type_info, err_struct_info: PAL parameters. |
| 45 | # |
| 46 | #Note: All values are hex w/o or w/ 0x prefix. |
| 47 | |
| 48 | |
| 49 | #On cpu2, inject only total 0x10 errors, interval 5 seconds |
| 50 | #corrected, data cache, hier-2, physical addr(assigned by tool code). |
| 51 | #working on Montecito latest PAL. |
| 52 | 2, 10, 5, 4101, 95 |
| 53 | |
| 54 | #On cpu4, inject and consume total 0x10 errors, interval 5 seconds |
| 55 | #corrected, data cache, hier-2, physical addr(assigned by tool code). |
| 56 | #working on Montecito latest PAL. |
| 57 | 4, 10, 5, 4109, 95 |
| 58 | |
| 59 | #On cpu15, inject and consume total 0x10 errors, interval 5 seconds |
| 60 | #recoverable, DTR0, hier-2. |
| 61 | #working on Montecito latest PAL. |
| 62 | 0xf, 0x10, 5, 4249, 15 |
| 63 | |
| 64 | The sample application source code: |
| 65 | |
| 66 | err_injection_tool.c: |
| 67 | |
| 68 | /* |
| 69 | * This program is free software; you can redistribute it and/or modify |
| 70 | * it under the terms of the GNU General Public License as published by |
| 71 | * the Free Software Foundation; either version 2 of the License, or |
| 72 | * (at your option) any later version. |
| 73 | * |
| 74 | * This program is distributed in the hope that it will be useful, but |
| 75 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 76 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 77 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 78 | * details. |
| 79 | * |
| 80 | * You should have received a copy of the GNU General Public License |
| 81 | * along with this program; if not, write to the Free Software |
| 82 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 83 | * |
| 84 | * Copyright (C) 2006 Intel Co |
| 85 | * Fenghua Yu <fenghua.yu@intel.com> |
| 86 | * |
| 87 | */ |
| 88 | #include <sys/types.h> |
| 89 | #include <sys/stat.h> |
| 90 | #include <fcntl.h> |
| 91 | #include <stdio.h> |
| 92 | #include <sched.h> |
| 93 | #include <unistd.h> |
| 94 | #include <stdlib.h> |
| 95 | #include <stdarg.h> |
| 96 | #include <string.h> |
| 97 | #include <errno.h> |
| 98 | #include <time.h> |
| 99 | #include <sys/ipc.h> |
| 100 | #include <sys/sem.h> |
| 101 | #include <sys/wait.h> |
| 102 | #include <sys/mman.h> |
| 103 | #include <sys/shm.h> |
| 104 | |
| 105 | #define MAX_FN_SIZE 256 |
| 106 | #define MAX_BUF_SIZE 256 |
| 107 | #define DATA_BUF_SIZE 256 |
| 108 | #define NR_CPUS 512 |
| 109 | #define MAX_TASK_NUM 2048 |
| 110 | #define MIN_INTERVAL 5 // seconds |
| 111 | #define ERR_DATA_BUFFER_SIZE 3 // Three 8-byte. |
| 112 | #define PARA_FIELD_NUM 5 |
| 113 | #define MASK_SIZE (NR_CPUS/64) |
| 114 | #define PATH_FORMAT "/sys/devices/system/cpu/cpu%d/err_inject/" |
| 115 | |
| 116 | int sched_setaffinity(pid_t pid, unsigned int len, unsigned long *mask); |
| 117 | |
| 118 | int verbose; |
| 119 | #define vbprintf if (verbose) printf |
| 120 | |
| 121 | int log_info(int cpu, const char *fmt, ...) |
| 122 | { |
| 123 | FILE *log; |
| 124 | char fn[MAX_FN_SIZE]; |
| 125 | char buf[MAX_BUF_SIZE]; |
| 126 | va_list args; |
| 127 | |
| 128 | sprintf(fn, "%d.log", cpu); |
| 129 | log=fopen(fn, "a+"); |
| 130 | if (log==NULL) { |
| 131 | perror("Error open:"); |
| 132 | return -1; |
| 133 | } |
| 134 | |
| 135 | va_start(args, fmt); |
| 136 | vprintf(fmt, args); |
| 137 | memset(buf, 0, MAX_BUF_SIZE); |
| 138 | vsprintf(buf, fmt, args); |
| 139 | va_end(args); |
| 140 | |
| 141 | fwrite(buf, sizeof(buf), 1, log); |
| 142 | fclose(log); |
| 143 | |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | typedef unsigned long u64; |
| 148 | typedef unsigned int u32; |
| 149 | |
| 150 | typedef union err_type_info_u { |
| 151 | struct { |
| 152 | u64 mode : 3, /* 0-2 */ |
| 153 | err_inj : 3, /* 3-5 */ |
| 154 | err_sev : 2, /* 6-7 */ |
| 155 | err_struct : 5, /* 8-12 */ |
| 156 | struct_hier : 3, /* 13-15 */ |
| 157 | reserved : 48; /* 16-63 */ |
| 158 | } err_type_info_u; |
| 159 | u64 err_type_info; |
| 160 | } err_type_info_t; |
| 161 | |
| 162 | typedef union err_struct_info_u { |
| 163 | struct { |
| 164 | u64 siv : 1, /* 0 */ |
| 165 | c_t : 2, /* 1-2 */ |
| 166 | cl_p : 3, /* 3-5 */ |
| 167 | cl_id : 3, /* 6-8 */ |
| 168 | cl_dp : 1, /* 9 */ |
| 169 | reserved1 : 22, /* 10-31 */ |
| 170 | tiv : 1, /* 32 */ |
| 171 | trigger : 4, /* 33-36 */ |
| 172 | trigger_pl : 3, /* 37-39 */ |
| 173 | reserved2 : 24; /* 40-63 */ |
| 174 | } err_struct_info_cache; |
| 175 | struct { |
| 176 | u64 siv : 1, /* 0 */ |
| 177 | tt : 2, /* 1-2 */ |
| 178 | tc_tr : 2, /* 3-4 */ |
| 179 | tr_slot : 8, /* 5-12 */ |
| 180 | reserved1 : 19, /* 13-31 */ |
| 181 | tiv : 1, /* 32 */ |
| 182 | trigger : 4, /* 33-36 */ |
| 183 | trigger_pl : 3, /* 37-39 */ |
| 184 | reserved2 : 24; /* 40-63 */ |
| 185 | } err_struct_info_tlb; |
| 186 | struct { |
| 187 | u64 siv : 1, /* 0 */ |
| 188 | regfile_id : 4, /* 1-4 */ |
| 189 | reg_num : 7, /* 5-11 */ |
| 190 | reserved1 : 20, /* 12-31 */ |
| 191 | tiv : 1, /* 32 */ |
| 192 | trigger : 4, /* 33-36 */ |
| 193 | trigger_pl : 3, /* 37-39 */ |
| 194 | reserved2 : 24; /* 40-63 */ |
| 195 | } err_struct_info_register; |
| 196 | struct { |
| 197 | u64 reserved; |
| 198 | } err_struct_info_bus_processor_interconnect; |
| 199 | u64 err_struct_info; |
| 200 | } err_struct_info_t; |
| 201 | |
| 202 | typedef union err_data_buffer_u { |
| 203 | struct { |
| 204 | u64 trigger_addr; /* 0-63 */ |
| 205 | u64 inj_addr; /* 64-127 */ |
| 206 | u64 way : 5, /* 128-132 */ |
| 207 | index : 20, /* 133-152 */ |
| 208 | : 39; /* 153-191 */ |
| 209 | } err_data_buffer_cache; |
| 210 | struct { |
| 211 | u64 trigger_addr; /* 0-63 */ |
| 212 | u64 inj_addr; /* 64-127 */ |
| 213 | u64 way : 5, /* 128-132 */ |
| 214 | index : 20, /* 133-152 */ |
| 215 | reserved : 39; /* 153-191 */ |
| 216 | } err_data_buffer_tlb; |
| 217 | struct { |
| 218 | u64 trigger_addr; /* 0-63 */ |
| 219 | } err_data_buffer_register; |
| 220 | struct { |
| 221 | u64 reserved; /* 0-63 */ |
| 222 | } err_data_buffer_bus_processor_interconnect; |
| 223 | u64 err_data_buffer[ERR_DATA_BUFFER_SIZE]; |
| 224 | } err_data_buffer_t; |
| 225 | |
| 226 | typedef union capabilities_u { |
| 227 | struct { |
| 228 | u64 i : 1, |
| 229 | d : 1, |
| 230 | rv : 1, |
| 231 | tag : 1, |
| 232 | data : 1, |
| 233 | mesi : 1, |
| 234 | dp : 1, |
| 235 | reserved1 : 3, |
| 236 | pa : 1, |
| 237 | va : 1, |
| 238 | wi : 1, |
| 239 | reserved2 : 20, |
| 240 | trigger : 1, |
| 241 | trigger_pl : 1, |
| 242 | reserved3 : 30; |
| 243 | } capabilities_cache; |
| 244 | struct { |
| 245 | u64 d : 1, |
| 246 | i : 1, |
| 247 | rv : 1, |
| 248 | tc : 1, |
| 249 | tr : 1, |
| 250 | reserved1 : 27, |
| 251 | trigger : 1, |
| 252 | trigger_pl : 1, |
| 253 | reserved2 : 30; |
| 254 | } capabilities_tlb; |
| 255 | struct { |
| 256 | u64 gr_b0 : 1, |
| 257 | gr_b1 : 1, |
| 258 | fr : 1, |
| 259 | br : 1, |
| 260 | pr : 1, |
| 261 | ar : 1, |
| 262 | cr : 1, |
| 263 | rr : 1, |
| 264 | pkr : 1, |
| 265 | dbr : 1, |
| 266 | ibr : 1, |
| 267 | pmc : 1, |
| 268 | pmd : 1, |
| 269 | reserved1 : 3, |
| 270 | regnum : 1, |
| 271 | reserved2 : 15, |
| 272 | trigger : 1, |
| 273 | trigger_pl : 1, |
| 274 | reserved3 : 30; |
| 275 | } capabilities_register; |
| 276 | struct { |
| 277 | u64 reserved; |
| 278 | } capabilities_bus_processor_interconnect; |
| 279 | } capabilities_t; |
| 280 | |
| 281 | typedef struct resources_s { |
| 282 | u64 ibr0 : 1, |
| 283 | ibr2 : 1, |
| 284 | ibr4 : 1, |
| 285 | ibr6 : 1, |
| 286 | dbr0 : 1, |
| 287 | dbr2 : 1, |
| 288 | dbr4 : 1, |
| 289 | dbr6 : 1, |
| 290 | reserved : 48; |
| 291 | } resources_t; |
| 292 | |
| 293 | |
| 294 | long get_page_size(void) |
| 295 | { |
| 296 | long page_size=sysconf(_SC_PAGESIZE); |
| 297 | return page_size; |
| 298 | } |
| 299 | |
| 300 | #define PAGE_SIZE (get_page_size()==-1?0x4000:get_page_size()) |
| 301 | #define SHM_SIZE (2*PAGE_SIZE*NR_CPUS) |
| 302 | #define SHM_VA 0x2000000100000000 |
| 303 | |
| 304 | int shmid; |
| 305 | void *shmaddr; |
| 306 | |
| 307 | int create_shm(void) |
| 308 | { |
| 309 | key_t key; |
| 310 | char fn[MAX_FN_SIZE]; |
| 311 | |
| 312 | /* cpu0 is always existing */ |
| 313 | sprintf(fn, PATH_FORMAT, 0); |
| 314 | if ((key = ftok(fn, 's')) == -1) { |
| 315 | perror("ftok"); |
| 316 | return -1; |
| 317 | } |
| 318 | |
| 319 | shmid = shmget(key, SHM_SIZE, 0644 | IPC_CREAT); |
| 320 | if (shmid == -1) { |
| 321 | if (errno==EEXIST) { |
| 322 | shmid = shmget(key, SHM_SIZE, 0); |
| 323 | if (shmid == -1) { |
| 324 | perror("shmget"); |
| 325 | return -1; |
| 326 | } |
| 327 | } |
| 328 | else { |
| 329 | perror("shmget"); |
| 330 | return -1; |
| 331 | } |
| 332 | } |
| 333 | vbprintf("shmid=%d", shmid); |
| 334 | |
| 335 | /* connect to the segment: */ |
| 336 | shmaddr = shmat(shmid, (void *)SHM_VA, 0); |
| 337 | if (shmaddr == (void*)-1) { |
| 338 | perror("shmat"); |
| 339 | return -1; |
| 340 | } |
| 341 | |
| 342 | memset(shmaddr, 0, SHM_SIZE); |
| 343 | mlock(shmaddr, SHM_SIZE); |
| 344 | |
| 345 | return 0; |
| 346 | } |
| 347 | |
| 348 | int free_shm() |
| 349 | { |
| 350 | munlock(shmaddr, SHM_SIZE); |
| 351 | shmdt(shmaddr); |
| 352 | semctl(shmid, 0, IPC_RMID); |
| 353 | |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | #ifdef _SEM_SEMUN_UNDEFINED |
| 358 | union semun |
| 359 | { |
| 360 | int val; |
| 361 | struct semid_ds *buf; |
| 362 | unsigned short int *array; |
| 363 | struct seminfo *__buf; |
| 364 | }; |
| 365 | #endif |
| 366 | |
| 367 | u32 mode=1; /* 1: physical mode; 2: virtual mode. */ |
| 368 | int one_lock=1; |
| 369 | key_t key[NR_CPUS]; |
| 370 | int semid[NR_CPUS]; |
| 371 | |
| 372 | int create_sem(int cpu) |
| 373 | { |
| 374 | union semun arg; |
| 375 | char fn[MAX_FN_SIZE]; |
| 376 | int sid; |
| 377 | |
| 378 | sprintf(fn, PATH_FORMAT, cpu); |
| 379 | sprintf(fn, "%s/%s", fn, "err_type_info"); |
| 380 | if ((key[cpu] = ftok(fn, 'e')) == -1) { |
| 381 | perror("ftok"); |
| 382 | return -1; |
| 383 | } |
| 384 | |
| 385 | if (semid[cpu]!=0) |
| 386 | return 0; |
| 387 | |
| 388 | /* clear old semaphore */ |
| 389 | if ((sid = semget(key[cpu], 1, 0)) != -1) |
| 390 | semctl(sid, 0, IPC_RMID); |
| 391 | |
| 392 | /* get one semaphore */ |
| 393 | if ((semid[cpu] = semget(key[cpu], 1, IPC_CREAT | IPC_EXCL)) == -1) { |
| 394 | perror("semget"); |
| 395 | printf("Please remove semaphore with key=0x%lx, then run the tool.\n", |
| 396 | (u64)key[cpu]); |
| 397 | return -1; |
| 398 | } |
| 399 | |
| 400 | vbprintf("semid[%d]=0x%lx, key[%d]=%lx\n",cpu,(u64)semid[cpu],cpu, |
| 401 | (u64)key[cpu]); |
| 402 | /* initialize the semaphore to 1: */ |
| 403 | arg.val = 1; |
| 404 | if (semctl(semid[cpu], 0, SETVAL, arg) == -1) { |
| 405 | perror("semctl"); |
| 406 | return -1; |
| 407 | } |
| 408 | |
| 409 | return 0; |
| 410 | } |
| 411 | |
| 412 | static int lock(int cpu) |
| 413 | { |
| 414 | struct sembuf lock; |
| 415 | |
| 416 | lock.sem_num = cpu; |
| 417 | lock.sem_op = 1; |
| 418 | semop(semid[cpu], &lock, 1); |
| 419 | |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | static int unlock(int cpu) |
| 424 | { |
| 425 | struct sembuf unlock; |
| 426 | |
| 427 | unlock.sem_num = cpu; |
| 428 | unlock.sem_op = -1; |
| 429 | semop(semid[cpu], &unlock, 1); |
| 430 | |
| 431 | return 0; |
| 432 | } |
| 433 | |
| 434 | void free_sem(int cpu) |
| 435 | { |
| 436 | semctl(semid[cpu], 0, IPC_RMID); |
| 437 | } |
| 438 | |
| 439 | int wr_multi(char *fn, unsigned long *data, int size) |
| 440 | { |
| 441 | int fd; |
| 442 | char buf[MAX_BUF_SIZE]; |
| 443 | int ret; |
| 444 | |
| 445 | if (size==1) |
| 446 | sprintf(buf, "%lx", *data); |
| 447 | else if (size==3) |
| 448 | sprintf(buf, "%lx,%lx,%lx", data[0], data[1], data[2]); |
| 449 | else { |
| 450 | fprintf(stderr,"write to file with wrong size!\n"); |
| 451 | return -1; |
| 452 | } |
| 453 | |
| 454 | fd=open(fn, O_RDWR); |
| 455 | if (!fd) { |
| 456 | perror("Error:"); |
| 457 | return -1; |
| 458 | } |
| 459 | ret=write(fd, buf, sizeof(buf)); |
| 460 | close(fd); |
| 461 | return ret; |
| 462 | } |
| 463 | |
| 464 | int wr(char *fn, unsigned long data) |
| 465 | { |
| 466 | return wr_multi(fn, &data, 1); |
| 467 | } |
| 468 | |
| 469 | int rd(char *fn, unsigned long *data) |
| 470 | { |
| 471 | int fd; |
| 472 | char buf[MAX_BUF_SIZE]; |
| 473 | |
| 474 | fd=open(fn, O_RDONLY); |
| 475 | if (fd<0) { |
| 476 | perror("Error:"); |
| 477 | return -1; |
| 478 | } |
| 479 | read(fd, buf, MAX_BUF_SIZE); |
| 480 | *data=strtoul(buf, NULL, 16); |
| 481 | close(fd); |
| 482 | return 0; |
| 483 | } |
| 484 | |
| 485 | int rd_status(char *path, int *status) |
| 486 | { |
| 487 | char fn[MAX_FN_SIZE]; |
| 488 | sprintf(fn, "%s/status", path); |
| 489 | if (rd(fn, (u64*)status)<0) { |
| 490 | perror("status reading error.\n"); |
| 491 | return -1; |
| 492 | } |
| 493 | |
| 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | int rd_capabilities(char *path, u64 *capabilities) |
| 498 | { |
| 499 | char fn[MAX_FN_SIZE]; |
| 500 | sprintf(fn, "%s/capabilities", path); |
| 501 | if (rd(fn, capabilities)<0) { |
| 502 | perror("capabilities reading error.\n"); |
| 503 | return -1; |
| 504 | } |
| 505 | |
| 506 | return 0; |
| 507 | } |
| 508 | |
| 509 | int rd_all(char *path) |
| 510 | { |
| 511 | unsigned long err_type_info, err_struct_info, err_data_buffer; |
| 512 | int status; |
| 513 | unsigned long capabilities, resources; |
| 514 | char fn[MAX_FN_SIZE]; |
| 515 | |
| 516 | sprintf(fn, "%s/err_type_info", path); |
| 517 | if (rd(fn, &err_type_info)<0) { |
| 518 | perror("err_type_info reading error.\n"); |
| 519 | return -1; |
| 520 | } |
| 521 | printf("err_type_info=%lx\n", err_type_info); |
| 522 | |
| 523 | sprintf(fn, "%s/err_struct_info", path); |
| 524 | if (rd(fn, &err_struct_info)<0) { |
| 525 | perror("err_struct_info reading error.\n"); |
| 526 | return -1; |
| 527 | } |
| 528 | printf("err_struct_info=%lx\n", err_struct_info); |
| 529 | |
| 530 | sprintf(fn, "%s/err_data_buffer", path); |
| 531 | if (rd(fn, &err_data_buffer)<0) { |
| 532 | perror("err_data_buffer reading error.\n"); |
| 533 | return -1; |
| 534 | } |
| 535 | printf("err_data_buffer=%lx\n", err_data_buffer); |
| 536 | |
| 537 | sprintf(fn, "%s/status", path); |
| 538 | if (rd("status", (u64*)&status)<0) { |
| 539 | perror("status reading error.\n"); |
| 540 | return -1; |
| 541 | } |
| 542 | printf("status=%d\n", status); |
| 543 | |
| 544 | sprintf(fn, "%s/capabilities", path); |
| 545 | if (rd(fn,&capabilities)<0) { |
| 546 | perror("capabilities reading error.\n"); |
| 547 | return -1; |
| 548 | } |
| 549 | printf("capabilities=%lx\n", capabilities); |
| 550 | |
| 551 | sprintf(fn, "%s/resources", path); |
| 552 | if (rd(fn, &resources)<0) { |
| 553 | perror("resources reading error.\n"); |
| 554 | return -1; |
| 555 | } |
| 556 | printf("resources=%lx\n", resources); |
| 557 | |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | int query_capabilities(char *path, err_type_info_t err_type_info, |
| 562 | u64 *capabilities) |
| 563 | { |
| 564 | char fn[MAX_FN_SIZE]; |
| 565 | err_struct_info_t err_struct_info; |
| 566 | err_data_buffer_t err_data_buffer; |
| 567 | |
| 568 | err_struct_info.err_struct_info=0; |
| 569 | memset(err_data_buffer.err_data_buffer, -1, ERR_DATA_BUFFER_SIZE*8); |
| 570 | |
| 571 | sprintf(fn, "%s/err_type_info", path); |
| 572 | wr(fn, err_type_info.err_type_info); |
| 573 | sprintf(fn, "%s/err_struct_info", path); |
| 574 | wr(fn, 0x0); |
| 575 | sprintf(fn, "%s/err_data_buffer", path); |
| 576 | wr_multi(fn, err_data_buffer.err_data_buffer, ERR_DATA_BUFFER_SIZE); |
| 577 | |
| 578 | // Fire pal_mc_error_inject procedure. |
| 579 | sprintf(fn, "%s/call_start", path); |
| 580 | wr(fn, mode); |
| 581 | |
| 582 | if (rd_capabilities(path, capabilities)<0) |
| 583 | return -1; |
| 584 | |
| 585 | return 0; |
| 586 | } |
| 587 | |
| 588 | int query_all_capabilities() |
| 589 | { |
| 590 | int status; |
| 591 | err_type_info_t err_type_info; |
| 592 | int err_sev, err_struct, struct_hier; |
| 593 | int cap=0; |
| 594 | u64 capabilities; |
| 595 | char path[MAX_FN_SIZE]; |
| 596 | |
| 597 | err_type_info.err_type_info=0; // Initial |
| 598 | err_type_info.err_type_info_u.mode=0; // Query mode; |
| 599 | err_type_info.err_type_info_u.err_inj=0; |
| 600 | |
| 601 | printf("All capabilities implemented in pal_mc_error_inject:\n"); |
| 602 | sprintf(path, PATH_FORMAT ,0); |
| 603 | for (err_sev=0;err_sev<3;err_sev++) |
| 604 | for (err_struct=0;err_struct<5;err_struct++) |
| 605 | for (struct_hier=0;struct_hier<5;struct_hier++) |
| 606 | { |
| 607 | status=-1; |
| 608 | capabilities=0; |
| 609 | err_type_info.err_type_info_u.err_sev=err_sev; |
| 610 | err_type_info.err_type_info_u.err_struct=err_struct; |
| 611 | err_type_info.err_type_info_u.struct_hier=struct_hier; |
| 612 | |
| 613 | if (query_capabilities(path, err_type_info, &capabilities)<0) |
| 614 | continue; |
| 615 | |
| 616 | if (rd_status(path, &status)<0) |
| 617 | continue; |
| 618 | |
| 619 | if (status==0) { |
| 620 | cap=1; |
| 621 | printf("For err_sev=%d, err_struct=%d, struct_hier=%d: ", |
| 622 | err_sev, err_struct, struct_hier); |
| 623 | printf("capabilities 0x%lx\n", capabilities); |
| 624 | } |
| 625 | } |
| 626 | if (!cap) { |
| 627 | printf("No capabilities supported.\n"); |
| 628 | return 0; |
| 629 | } |
| 630 | |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | int err_inject(int cpu, char *path, err_type_info_t err_type_info, |
| 635 | err_struct_info_t err_struct_info, |
| 636 | err_data_buffer_t err_data_buffer) |
| 637 | { |
| 638 | int status; |
| 639 | char fn[MAX_FN_SIZE]; |
| 640 | |
| 641 | log_info(cpu, "err_type_info=%lx, err_struct_info=%lx, ", |
| 642 | err_type_info.err_type_info, |
| 643 | err_struct_info.err_struct_info); |
| 644 | log_info(cpu,"err_data_buffer=[%lx,%lx,%lx]\n", |
| 645 | err_data_buffer.err_data_buffer[0], |
| 646 | err_data_buffer.err_data_buffer[1], |
| 647 | err_data_buffer.err_data_buffer[2]); |
| 648 | sprintf(fn, "%s/err_type_info", path); |
| 649 | wr(fn, err_type_info.err_type_info); |
| 650 | sprintf(fn, "%s/err_struct_info", path); |
| 651 | wr(fn, err_struct_info.err_struct_info); |
| 652 | sprintf(fn, "%s/err_data_buffer", path); |
| 653 | wr_multi(fn, err_data_buffer.err_data_buffer, ERR_DATA_BUFFER_SIZE); |
| 654 | |
| 655 | // Fire pal_mc_error_inject procedure. |
| 656 | sprintf(fn, "%s/call_start", path); |
| 657 | wr(fn,mode); |
| 658 | |
| 659 | if (rd_status(path, &status)<0) { |
| 660 | vbprintf("fail: read status\n"); |
| 661 | return -100; |
| 662 | } |
| 663 | |
| 664 | if (status!=0) { |
| 665 | log_info(cpu, "fail: status=%d\n", status); |
| 666 | return status; |
| 667 | } |
| 668 | |
| 669 | return status; |
| 670 | } |
| 671 | |
| 672 | static int construct_data_buf(char *path, err_type_info_t err_type_info, |
| 673 | err_struct_info_t err_struct_info, |
| 674 | err_data_buffer_t *err_data_buffer, |
| 675 | void *va1) |
| 676 | { |
| 677 | char fn[MAX_FN_SIZE]; |
| 678 | u64 virt_addr=0, phys_addr=0; |
| 679 | |
| 680 | vbprintf("va1=%lx\n", (u64)va1); |
| 681 | memset(&err_data_buffer->err_data_buffer_cache, 0, ERR_DATA_BUFFER_SIZE*8); |
| 682 | |
| 683 | switch (err_type_info.err_type_info_u.err_struct) { |
| 684 | case 1: // Cache |
| 685 | switch (err_struct_info.err_struct_info_cache.cl_id) { |
| 686 | case 1: //Virtual addr |
| 687 | err_data_buffer->err_data_buffer_cache.inj_addr=(u64)va1; |
| 688 | break; |
| 689 | case 2: //Phys addr |
| 690 | sprintf(fn, "%s/virtual_to_phys", path); |
| 691 | virt_addr=(u64)va1; |
| 692 | if (wr(fn,virt_addr)<0) |
| 693 | return -1; |
| 694 | rd(fn, &phys_addr); |
| 695 | err_data_buffer->err_data_buffer_cache.inj_addr=phys_addr; |
| 696 | break; |
| 697 | default: |
| 698 | printf("Not supported cl_id\n"); |
| 699 | break; |
| 700 | } |
| 701 | break; |
| 702 | case 2: // TLB |
| 703 | break; |
| 704 | case 3: // Register file |
| 705 | break; |
| 706 | case 4: // Bus/system interconnect |
| 707 | default: |
| 708 | printf("Not supported err_struct\n"); |
| 709 | break; |
| 710 | } |
| 711 | |
| 712 | return 0; |
| 713 | } |
| 714 | |
| 715 | typedef struct { |
| 716 | u64 cpu; |
| 717 | u64 loop; |
| 718 | u64 interval; |
| 719 | u64 err_type_info; |
| 720 | u64 err_struct_info; |
| 721 | u64 err_data_buffer[ERR_DATA_BUFFER_SIZE]; |
| 722 | } parameters_t; |
| 723 | |
| 724 | parameters_t line_para; |
| 725 | int para; |
| 726 | |
| 727 | static int empty_data_buffer(u64 *err_data_buffer) |
| 728 | { |
| 729 | int empty=1; |
| 730 | int i; |
| 731 | |
| 732 | for (i=0;i<ERR_DATA_BUFFER_SIZE; i++) |
| 733 | if (err_data_buffer[i]!=-1) |
| 734 | empty=0; |
| 735 | |
| 736 | return empty; |
| 737 | } |
| 738 | |
| 739 | int err_inj() |
| 740 | { |
| 741 | err_type_info_t err_type_info; |
| 742 | err_struct_info_t err_struct_info; |
| 743 | err_data_buffer_t err_data_buffer; |
| 744 | int count; |
| 745 | FILE *fp; |
| 746 | unsigned long cpu, loop, interval, err_type_info_conf, err_struct_info_conf; |
| 747 | u64 err_data_buffer_conf[ERR_DATA_BUFFER_SIZE]; |
| 748 | int num; |
| 749 | int i; |
| 750 | char path[MAX_FN_SIZE]; |
| 751 | parameters_t parameters[MAX_TASK_NUM]={}; |
| 752 | pid_t child_pid[MAX_TASK_NUM]; |
| 753 | time_t current_time; |
| 754 | int status; |
| 755 | |
| 756 | if (!para) { |
| 757 | fp=fopen("err.conf", "r"); |
| 758 | if (fp==NULL) { |
| 759 | perror("Error open err.conf"); |
| 760 | return -1; |
| 761 | } |
| 762 | |
| 763 | num=0; |
| 764 | while (!feof(fp)) { |
| 765 | char buf[256]; |
| 766 | memset(buf,0,256); |
| 767 | fgets(buf, 256, fp); |
| 768 | count=sscanf(buf, "%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx\n", |
| 769 | &cpu, &loop, &interval,&err_type_info_conf, |
| 770 | &err_struct_info_conf, |
| 771 | &err_data_buffer_conf[0], |
| 772 | &err_data_buffer_conf[1], |
| 773 | &err_data_buffer_conf[2]); |
| 774 | if (count!=PARA_FIELD_NUM+3) { |
| 775 | err_data_buffer_conf[0]=-1; |
| 776 | err_data_buffer_conf[1]=-1; |
| 777 | err_data_buffer_conf[2]=-1; |
| 778 | count=sscanf(buf, "%lx, %lx, %lx, %lx, %lx\n", |
| 779 | &cpu, &loop, &interval,&err_type_info_conf, |
| 780 | &err_struct_info_conf); |
| 781 | if (count!=PARA_FIELD_NUM) |
| 782 | continue; |
| 783 | } |
| 784 | |
| 785 | parameters[num].cpu=cpu; |
| 786 | parameters[num].loop=loop; |
| 787 | parameters[num].interval= interval>MIN_INTERVAL |
| 788 | ?interval:MIN_INTERVAL; |
| 789 | parameters[num].err_type_info=err_type_info_conf; |
| 790 | parameters[num].err_struct_info=err_struct_info_conf; |
| 791 | memcpy(parameters[num++].err_data_buffer, |
| 792 | err_data_buffer_conf,ERR_DATA_BUFFER_SIZE*8) ; |
| 793 | |
| 794 | if (num>=MAX_TASK_NUM) |
| 795 | break; |
| 796 | } |
| 797 | } |
| 798 | else { |
| 799 | parameters[0].cpu=line_para.cpu; |
| 800 | parameters[0].loop=line_para.loop; |
| 801 | parameters[0].interval= line_para.interval>MIN_INTERVAL |
| 802 | ?line_para.interval:MIN_INTERVAL; |
| 803 | parameters[0].err_type_info=line_para.err_type_info; |
| 804 | parameters[0].err_struct_info=line_para.err_struct_info; |
| 805 | memcpy(parameters[0].err_data_buffer, |
| 806 | line_para.err_data_buffer,ERR_DATA_BUFFER_SIZE*8) ; |
| 807 | |
| 808 | num=1; |
| 809 | } |
| 810 | |
| 811 | /* Create semaphore: If one_lock, one semaphore for all processors. |
| 812 | Otherwise, one semaphore for each processor. */ |
| 813 | if (one_lock) { |
| 814 | if (create_sem(0)) { |
| 815 | printf("Can not create semaphore...exit\n"); |
| 816 | free_sem(0); |
| 817 | return -1; |
| 818 | } |
| 819 | } |
| 820 | else { |
| 821 | for (i=0;i<num;i++) { |
| 822 | if (create_sem(parameters[i].cpu)) { |
| 823 | printf("Can not create semaphore for cpu%d...exit\n",i); |
| 824 | free_sem(parameters[num].cpu); |
| 825 | return -1; |
| 826 | } |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | /* Create a shm segment which will be used to inject/consume errors on.*/ |
| 831 | if (create_shm()==-1) { |
| 832 | printf("Error to create shm...exit\n"); |
| 833 | return -1; |
| 834 | } |
| 835 | |
| 836 | for (i=0;i<num;i++) { |
| 837 | pid_t pid; |
| 838 | |
| 839 | current_time=time(NULL); |
| 840 | log_info(parameters[i].cpu, "\nBegine at %s", ctime(¤t_time)); |
| 841 | log_info(parameters[i].cpu, "Configurations:\n"); |
| 842 | log_info(parameters[i].cpu,"On cpu%ld: loop=%lx, interval=%lx(s)", |
| 843 | parameters[i].cpu, |
| 844 | parameters[i].loop, |
| 845 | parameters[i].interval); |
| 846 | log_info(parameters[i].cpu," err_type_info=%lx,err_struct_info=%lx\n", |
| 847 | parameters[i].err_type_info, |
| 848 | parameters[i].err_struct_info); |
| 849 | |
| 850 | sprintf(path, PATH_FORMAT, (int)parameters[i].cpu); |
| 851 | err_type_info.err_type_info=parameters[i].err_type_info; |
| 852 | err_struct_info.err_struct_info=parameters[i].err_struct_info; |
| 853 | memcpy(err_data_buffer.err_data_buffer, |
| 854 | parameters[i].err_data_buffer, |
| 855 | ERR_DATA_BUFFER_SIZE*8); |
| 856 | |
| 857 | pid=fork(); |
| 858 | if (pid==0) { |
| 859 | unsigned long mask[MASK_SIZE]; |
| 860 | int j, k; |
| 861 | |
| 862 | void *va1, *va2; |
| 863 | |
| 864 | /* Allocate two memory areas va1 and va2 in shm */ |
| 865 | va1=shmaddr+parameters[i].cpu*PAGE_SIZE; |
| 866 | va2=shmaddr+parameters[i].cpu*PAGE_SIZE+PAGE_SIZE; |
| 867 | |
| 868 | vbprintf("va1=%lx, va2=%lx\n", (u64)va1, (u64)va2); |
| 869 | memset(va1, 0x1, PAGE_SIZE); |
| 870 | memset(va2, 0x2, PAGE_SIZE); |
| 871 | |
| 872 | if (empty_data_buffer(err_data_buffer.err_data_buffer)) |
| 873 | /* If not specified yet, construct data buffer |
| 874 | * with va1 |
| 875 | */ |
| 876 | construct_data_buf(path, err_type_info, |
| 877 | err_struct_info, &err_data_buffer,va1); |
| 878 | |
| 879 | for (j=0;j<MASK_SIZE;j++) |
| 880 | mask[j]=0; |
| 881 | |
| 882 | cpu=parameters[i].cpu; |
| 883 | k = cpu%64; |
| 884 | j = cpu/64; |
| 885 | mask[j]=1<<k; |
| 886 | |
| 887 | if (sched_setaffinity(0, MASK_SIZE*8, mask)==-1) { |
| 888 | perror("Error sched_setaffinity:"); |
| 889 | return -1; |
| 890 | } |
| 891 | |
| 892 | for (j=0; j<parameters[i].loop; j++) { |
| 893 | log_info(parameters[i].cpu,"Injection "); |
| 894 | log_info(parameters[i].cpu,"on cpu%ld: #%d/%ld ", |
| 895 | |
| 896 | parameters[i].cpu,j+1, parameters[i].loop); |
| 897 | |
| 898 | /* Hold the lock */ |
| 899 | if (one_lock) |
| 900 | lock(0); |
| 901 | else |
| 902 | /* Hold lock on this cpu */ |
| 903 | lock(parameters[i].cpu); |
| 904 | |
| 905 | if ((status=err_inject(parameters[i].cpu, |
| 906 | path, err_type_info, |
| 907 | err_struct_info, err_data_buffer)) |
| 908 | ==0) { |
| 909 | /* consume the error for "inject only"*/ |
| 910 | memcpy(va2, va1, PAGE_SIZE); |
| 911 | memcpy(va1, va2, PAGE_SIZE); |
| 912 | log_info(parameters[i].cpu, |
| 913 | "successful\n"); |
| 914 | } |
| 915 | else { |
| 916 | log_info(parameters[i].cpu,"fail:"); |
| 917 | log_info(parameters[i].cpu, |
| 918 | "status=%d\n", status); |
| 919 | unlock(parameters[i].cpu); |
| 920 | break; |
| 921 | } |
| 922 | if (one_lock) |
| 923 | /* Release the lock */ |
| 924 | unlock(0); |
| 925 | /* Release lock on this cpu */ |
| 926 | else |
| 927 | unlock(parameters[i].cpu); |
| 928 | |
| 929 | if (j < parameters[i].loop-1) |
| 930 | sleep(parameters[i].interval); |
| 931 | } |
| 932 | current_time=time(NULL); |
| 933 | log_info(parameters[i].cpu, "Done at %s", ctime(¤t_time)); |
| 934 | return 0; |
| 935 | } |
| 936 | else if (pid<0) { |
| 937 | perror("Error fork:"); |
| 938 | continue; |
| 939 | } |
| 940 | child_pid[i]=pid; |
| 941 | } |
| 942 | for (i=0;i<num;i++) |
| 943 | waitpid(child_pid[i], NULL, 0); |
| 944 | |
| 945 | if (one_lock) |
| 946 | free_sem(0); |
| 947 | else |
| 948 | for (i=0;i<num;i++) |
| 949 | free_sem(parameters[i].cpu); |
| 950 | |
| 951 | printf("All done.\n"); |
| 952 | |
| 953 | return 0; |
| 954 | } |
| 955 | |
| 956 | void help() |
| 957 | { |
| 958 | printf("err_inject_tool:\n"); |
| 959 | printf("\t-q: query all capabilities. default: off\n"); |
| 960 | printf("\t-m: procedure mode. 1: physical 2: virtual. default: 1\n"); |
| 961 | printf("\t-i: inject errors. default: off\n"); |
| 962 | printf("\t-l: one lock per cpu. default: one lock for all\n"); |
| 963 | printf("\t-e: error parameters:\n"); |
| 964 | printf("\t\tcpu,loop,interval,err_type_info,err_struct_info[,err_data_buffer[0],err_data_buffer[1],err_data_buffer[2]]\n"); |
| 965 | printf("\t\t cpu: logical cpu number the error will be inject in.\n"); |
| 966 | printf("\t\t loop: times the error will be injected.\n"); |
| 967 | printf("\t\t interval: In second. every so often one error is injected.\n"); |
| 968 | printf("\t\t err_type_info, err_struct_info: PAL parameters.\n"); |
| 969 | printf("\t\t err_data_buffer: PAL parameter. Optional. If not present,\n"); |
| 970 | printf("\t\t it's constructed by tool automatically. Be\n"); |
| 971 | printf("\t\t careful to provide err_data_buffer and make\n"); |
| 972 | printf("\t\t sure it's working with the environment.\n"); |
| 973 | printf("\t Note:no space between error parameters.\n"); |
| 974 | printf("\t default: Take error parameters from err.conf instead of command line.\n"); |
| 975 | printf("\t-v: verbose. default: off\n"); |
| 976 | printf("\t-h: help\n\n"); |
| 977 | printf("The tool will take err.conf file as "); |
| 978 | printf("input to inject single or multiple errors "); |
| 979 | printf("on one or multiple cpus in parallel.\n"); |
| 980 | } |
| 981 | |
| 982 | int main(int argc, char **argv) |
| 983 | { |
| 984 | char c; |
| 985 | int do_err_inj=0; |
| 986 | int do_query_all=0; |
| 987 | int count; |
| 988 | u32 m; |
| 989 | |
| 990 | /* Default one lock for all cpu's */ |
| 991 | one_lock=1; |
| 992 | while ((c = getopt(argc, argv, "m:iqvhle:")) != EOF) |
| 993 | switch (c) { |
| 994 | case 'm': /* Procedure mode. 1: phys 2: virt */ |
| 995 | count=sscanf(optarg, "%x", &m); |
| 996 | if (count!=1 || (m!=1 && m!=2)) { |
| 997 | printf("Wrong mode number.\n"); |
| 998 | help(); |
| 999 | return -1; |
| 1000 | } |
| 1001 | mode=m; |
| 1002 | break; |
| 1003 | case 'i': /* Inject errors */ |
| 1004 | do_err_inj=1; |
| 1005 | break; |
| 1006 | case 'q': /* Query */ |
| 1007 | do_query_all=1; |
| 1008 | break; |
| 1009 | case 'v': /* Verbose */ |
| 1010 | verbose=1; |
| 1011 | break; |
| 1012 | case 'l': /* One lock per cpu */ |
| 1013 | one_lock=0; |
| 1014 | break; |
| 1015 | case 'e': /* error arguments */ |
| 1016 | /* Take parameters: |
| 1017 | * #cpu, loop, interval, err_type_info, err_struct_info[, err_data_buffer] |
| 1018 | * err_data_buffer is optional. Recommend not to specify |
| 1019 | * err_data_buffer. Better to use tool to generate it. |
| 1020 | */ |
| 1021 | count=sscanf(optarg, |
| 1022 | "%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx\n", |
| 1023 | &line_para.cpu, |
| 1024 | &line_para.loop, |
| 1025 | &line_para.interval, |
| 1026 | &line_para.err_type_info, |
| 1027 | &line_para.err_struct_info, |
| 1028 | &line_para.err_data_buffer[0], |
| 1029 | &line_para.err_data_buffer[1], |
| 1030 | &line_para.err_data_buffer[2]); |
| 1031 | if (count!=PARA_FIELD_NUM+3) { |
| 1032 | line_para.err_data_buffer[0]=-1, |
| 1033 | line_para.err_data_buffer[1]=-1, |
| 1034 | line_para.err_data_buffer[2]=-1; |
| 1035 | count=sscanf(optarg, "%lx, %lx, %lx, %lx, %lx\n", |
| 1036 | &line_para.cpu, |
| 1037 | &line_para.loop, |
| 1038 | &line_para.interval, |
| 1039 | &line_para.err_type_info, |
| 1040 | &line_para.err_struct_info); |
| 1041 | if (count!=PARA_FIELD_NUM) { |
| 1042 | printf("Wrong error arguments.\n"); |
| 1043 | help(); |
| 1044 | return -1; |
| 1045 | } |
| 1046 | } |
| 1047 | para=1; |
| 1048 | break; |
| 1049 | continue; |
| 1050 | break; |
| 1051 | case 'h': |
| 1052 | help(); |
| 1053 | return 0; |
| 1054 | default: |
| 1055 | break; |
| 1056 | } |
| 1057 | |
| 1058 | if (do_query_all) |
| 1059 | query_all_capabilities(); |
| 1060 | if (do_err_inj) |
| 1061 | err_inj(); |
| 1062 | |
| 1063 | if (!do_query_all && !do_err_inj) |
| 1064 | help(); |
| 1065 | |
| 1066 | return 0; |
| 1067 | } |
| 1068 | |