diff options
| -rw-r--r-- | Documentation/ia64/err_inject.txt | 1068 | ||||
| -rw-r--r-- | arch/ia64/Kconfig | 10 | ||||
| -rw-r--r-- | arch/ia64/defconfig | 1 | ||||
| -rw-r--r-- | arch/ia64/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/ia64/kernel/err_inject.c | 293 | ||||
| -rw-r--r-- | include/asm-ia64/pal.h | 33 |
6 files changed, 1406 insertions, 0 deletions
diff --git a/Documentation/ia64/err_inject.txt b/Documentation/ia64/err_inject.txt new file mode 100644 index 00000000000..6449a7090db --- /dev/null +++ b/Documentation/ia64/err_inject.txt @@ -0,0 +1,1068 @@ + +IPF Machine Check (MC) error inject tool +======================================== + +IPF Machine Check (MC) error inject tool is used to inject MC +errors from Linux. The tool is a test bed for IPF MC work flow including +hardware correctable error handling, OS recoverable error handling, MC +event logging, etc. + +The tool includes two parts: a kernel driver and a user application +sample. The driver provides interface to PAL to inject error +and query error injection capabilities. The driver code is in +arch/ia64/kernel/err_inject.c. The application sample (shown below) +provides a combination of various errors and calls the driver's interface +(sysfs interface) to inject errors or query error injection capabilities. + +The tool can be used to test Intel IPF machine MC handling capabilities. +It's especially useful for people who can not access hardware MC injection +tool to inject error. It's also very useful to integrate with other +software test suits to do stressful testing on IPF. + +Below is a sample application as part of the whole tool. The sample +can be used as a working test tool. Or it can be expanded to include +more features. It also can be a integrated into a libary or other user +application to have more thorough test. + +The sample application takes err.conf as error configuation input. Gcc +compiles the code. After you install err_inject driver, you can run +this sample application to inject errors. + +Errata: Itanium 2 Processors Specification Update lists some errata against +the pal_mc_error_inject PAL procedure. The following err.conf has been tested +on latest Montecito PAL. + +err.conf: + +#This is configuration file for err_inject_tool. +#The format of the each line is: +#cpu, loop, interval, err_type_info, err_struct_info, err_data_buffer +#where +# cpu: logical cpu number the error will be inject in. +# loop: times the error will be injected. +# interval: In second. every so often one error is injected. +# err_type_info, err_struct_info: PAL parameters. +# +#Note: All values are hex w/o or w/ 0x prefix. + + +#On cpu2, inject only total 0x10 errors, interval 5 seconds +#corrected, data cache, hier-2, physical addr(assigned by tool code). +#working on Montecito latest PAL. +2, 10, 5, 4101, 95 + +#On cpu4, inject and consume total 0x10 errors, interval 5 seconds +#corrected, data cache, hier-2, physical addr(assigned by tool code). +#working on Montecito latest PAL. +4, 10, 5, 4109, 95 + +#On cpu15, inject and consume total 0x10 errors, interval 5 seconds +#recoverable, DTR0, hier-2. +#working on Montecito latest PAL. +0xf, 0x10, 5, 4249, 15 + +The sample application source code: + +err_injection_tool.c: + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Copyright (C) 2006 Intel Co + * Fenghua Yu <fenghua.yu@intel.com> + * + */ +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdio.h> +#include <sched.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <errno.h> +#include <time.h> +#include <sys/ipc.h> +#include <sys/sem.h> +#include <sys/wait.h> +#include <sys/mman.h> +#include <sys/shm.h> + +#define MAX_FN_SIZE 256 +#define MAX_BUF_SIZE 256 +#define DATA_BUF_SIZE 256 +#define NR_CPUS 512 +#define MAX_TASK_NUM 2048 +#define MIN_INTERVAL 5 // seconds +#define ERR_DATA_BUFFER_SIZE 3 // Three 8-byte. +#define PARA_FIELD_NUM 5 +#define MASK_SIZE (NR_CPUS/64) +#define PATH_FORMAT "/sys/devices/system/cpu/cpu%d/err_inject/" + +int sched_setaffinity(pid_t pid, unsigned int len, unsigned long *mask); + +int verbose; +#define vbprintf if (verbose) printf + +int log_info(int cpu, const char *fmt, ...) +{ + FILE *log; + char fn[MAX_FN_SIZE]; + char buf[MAX_BUF_SIZE]; + va_list args; + + sprintf(fn, "%d.log", cpu); + log=fopen(fn, "a+"); + if (log==NULL) { + perror("Error open:"); + return -1; + } + + va_start(args, fmt); + vprintf(fmt, args); + memset(buf, 0, MAX_BUF_SIZE); + vsprintf(buf, fmt, args); + va_end(args); + + fwrite(buf, sizeof(buf), 1, log); + fclose(log); + + return 0; +} + +typedef unsigned long u64; +typedef unsigned int u32; + +typedef union err_type_info_u { + struct { + u64 mode : 3, /* 0-2 */ + err_inj : 3, /* 3-5 */ + err_sev : 2, /* 6-7 */ + err_struct : 5, /* 8-12 */ + struct_hier : 3, /* 13-15 */ + reserved : 48; /* 16-63 */ + } err_type_info_u; + u64 err_type_info; +} err_type_info_t; + +typedef union err_struct_info_u { + struct { + u64 siv : 1, /* 0 */ + c_t : 2, /* 1-2 */ + cl_p : 3, /* 3-5 */ + cl_id : 3, /* 6-8 */ + cl_dp : 1, /* 9 */ + reserved1 : 22, /* 10-31 */ + tiv : 1, /* 32 */ + trigger : 4, /* 33-36 */ + trigger_pl : 3, /* 37-39 */ + reserved2 : 24; /* 40-63 */ + } err_struct_info_cache; + struct { + u64 siv : 1, /* 0 */ + tt : 2, /* 1-2 */ + tc_tr : 2, /* 3-4 */ + tr_slot : 8, /* 5-12 */ + reserved1 : 19, /* 13-31 */ + tiv : 1, /* 32 */ + trigger : 4, /* 33-36 */ + trigger_pl : 3, /* 37-39 */ + reserved2 : 24; /* 40-63 */ + } err_struct_info_tlb; + struct { + u64 siv : 1, /* 0 */ + regfile_id : 4, /* 1-4 */ + reg_num : 7, /* 5-11 */ + reserved1 : 20, /* 12-31 */ + tiv : 1, /* 32 */ + trigger : 4, /* 33-36 */ + trigger_pl : 3, /* 37-39 */ + reserved2 : 24; /* 40-63 */ + } err_struct_info_register; + struct { + u64 reserved; + } err_struct_info_bus_processor_interconnect; + u64 err_struct_info; +} err_struct_info_t; + +typedef union err_data_buffer_u { + struct { + u64 trigger_addr; /* 0-63 */ + u64 inj_addr; /* 64-127 */ + u64 way : 5, /* 128-132 */ + index : 20, /* 133-152 */ + : 39; /* 153-191 */ + } err_data_buffer_cache; + struct { + u64 trigger_addr; /* 0-63 */ + u64 inj_addr; /* 64-127 */ + u64 way : 5, /* 128-132 */ + index : 20, /* 133-152 */ + reserved : 39; /* 153-191 */ + } err_data_buffer_tlb; + struct { + u64 trigger_addr; /* 0-63 */ + } err_data_buffer_register; + struct { + u64 reserved; /* 0-63 */ + } err_data_buffer_bus_processor_interconnect; + u64 err_data_buffer[ERR_DATA_BUFFER_SIZE]; +} err_data_buffer_t; + +typedef union capabilities_u { + struct { + u64 i : 1, + d : 1, + rv : 1, + tag : 1, + data : 1, + mesi : 1, + dp : 1, + reserved1 : 3, + pa : 1, + va : 1, + wi : 1, + reserved2 : 20, + trigger : 1, + trigger_pl : 1, + reserved3 : 30; + } capabilities_cache; + struct { + u64 d : 1, + i : 1, + rv : 1, + tc : 1, + tr : 1, + reserved1 : 27, + trigger : 1, + trigger_pl : 1, + reserved2 : 30; + } capabilities_tlb; + struct { + u64 gr_b0 : 1, + gr_b1 : 1, + fr : 1, + br : 1, + pr : 1, + ar : 1, + cr : 1, + rr : 1, + pkr : 1, + dbr : 1, + ibr : 1, + pmc : 1, + pmd : 1, + reserved1 : 3, + regnum : 1, + reserved2 : 15, + trigger : 1, + trigger_pl : 1, + reserved3 : 30; + } capabilities_register; + struct { + u64 reserved; + } capabilities_bus_processor_interconnect; +} capabilities_t; + +typedef struct resources_s { + u64 ibr0 : 1, + ibr2 : 1, + ibr4 : 1, + ibr6 : 1, + dbr0 : 1, + dbr2 : 1, + dbr4 : 1, + dbr6 : 1, + reserved : 48; +} resources_t; + + +long get_page_size(void) +{ + long page_size=sysconf(_SC_PAGESIZE); + return page_size; +} + +#define PAGE_SIZE (get_page_size()==-1?0x4000:get_page_size()) +#define SHM_SIZE (2*PAGE_SIZE*NR_CPUS) +#define SHM_VA 0x2000000100000000 + +int shmid; +void *shmaddr; + +int create_shm(void) +{ + key_t key; + char fn[MAX_FN_SIZE]; + + /* cpu0 is always existing */ + sprintf(fn, PATH_FORMAT, 0); + if ((key = ftok(fn, 's')) == -1) { + perror("ftok"); + return -1; + } + + shmid = shmget(key, SHM_SIZE, 0644 | IPC_CREAT); + if (shmid == -1) { + if (errno==EEXIST) { + shmid = shmget(key, SHM_SIZE, 0); + if (shmid == -1) { + perror("shmget"); + return -1; + } + } + else { + perror("shmget"); + return -1; + } + } + vbprintf("shmid=%d", shmid); + + /* connect to the segment: */ + shmaddr = shmat(shmid, (void *)SHM_VA, 0); + if (shmaddr == (void*)-1) { + perror("shmat"); + return -1; + } + + memset(shmaddr, 0, SHM_SIZE); + mlock(shmaddr, SHM_SIZE); + + return 0; +} + +int free_shm() +{ + munlock(shmaddr, SHM_SIZE); + shmdt(shmaddr); + semctl(shmid, 0, IPC_RMID); + + return 0; +} + +#ifdef _SEM_SEMUN_UNDEFINED +union semun +{ + int val; + struct semid_ds *buf; + unsigned short int *array; + struct seminfo *__buf; +}; +#endif + +u32 mode=1; /* 1: physical mode; 2: virtual mode. */ +int one_lock=1; +key_t key[NR_CPUS]; +int semid[NR_CPUS]; + +int create_sem(int cpu) +{ + union semun arg; + char fn[MAX_FN_SIZE]; + int sid; + + sprintf(fn, PATH_FORMAT, cpu); + sprintf(fn, "%s/%s", fn, "err_type_info"); + if ((key[cpu] = ftok(fn, 'e')) == -1) { + perror("ftok"); + return -1; + } + + if (semid[cpu]!=0) + return 0; + + /* clear old semaphore */ + if ((sid = semget(key[cpu], 1, 0)) != -1) + semctl(sid, 0, IPC_RMID); + + /* get one semaphore */ + if ((semid[cpu] = semget(key[cpu], 1, IPC_CREAT | IPC_EXCL)) == -1) { + perror("semget"); + printf("Please remove semaphore with key=0x%lx, then run the tool.\n", + (u64)key[cpu]); + return -1; + } + + vbprintf("semid[%d]=0x%lx, key[%d]=%lx\n",cpu,(u64)semid[cpu],cpu, + (u64)key[cpu]); + /* initialize the semaphore to 1: */ + arg.val = 1; + if (semctl(semid[cpu], 0, SETVAL, arg) == -1) { + perror("semctl"); + return -1; + } + + return 0; +} + +static int lock(int cpu) +{ + struct sembuf lock; + + lock.sem_num = cpu; + lock.sem_op = 1; + semop(semid[cpu], &lock, 1); + + return 0; +} + +static int unlock(int cpu) +{ + struct sembuf unlock; + + unlock.sem_num = cpu; + unlock.sem_op = -1; + semop(semid[cpu], &unlock, 1); + + return 0; +} + +void free_sem(int cpu) +{ + semctl(semid[cpu], 0, IPC_RMID); +} + +int wr_multi(char *fn, unsigned long *data, int size) +{ + int fd; + char buf[MAX_BUF_SIZE]; + int ret; + + if (size==1) + sprintf(buf, "%lx", *data); + else if (size==3) + sprintf(buf, "%lx,%lx,%lx", data[0], data[1], data[2]); + else { + fprintf(stderr,"write to file with wrong size!\n"); + return -1; + } + + fd=open(fn, O_RDWR); + if (!fd) { + perror("Error:"); + return -1; + } + ret=write(fd, buf, sizeof(buf)); + close(fd); + return ret; +} + +int wr(char *fn, unsigned long data) +{ + return wr_multi(fn, &data, 1); +} + +int rd(char *fn, unsigned long *data) +{ + int fd; + char buf[MAX_BUF_SIZE]; + + fd=open(fn, O_RDONLY); + if (fd<0) { + perror("Error:"); + return -1; + } + read(fd, buf, MAX_BUF_SIZE); + *data=strtoul(buf, NULL, 16); + close(fd); + return 0; +} + +int rd_status(char *path, int *status) +{ + char fn[MAX_FN_SIZE]; + sprintf(fn, "%s/status", path); + if (rd(fn, (u64*)status)<0) { + perror("status reading error.\n"); + return -1; + } + + return 0; +} + +int rd_capabilities(char *path, u64 *capabilities) +{ + char fn[MAX_FN_SIZE]; + sprintf(fn, "%s/capabilities", path); + if (rd(fn, capabilities)<0) { + perror("capabilities reading error.\n"); + return -1; + } + + return 0; +} + +int rd_all(char *path) +{ + unsigned long err_type_info, err_struct_info, err_data_buffer; + int status; + unsigned long capabilities, resources; + char fn[MAX_FN_SIZE]; + + sprintf(fn, "%s/err_type_info", path); + if (rd(fn, &err_type_info)<0) { + perror("err_type_info reading error.\n"); + return -1; + } + printf("err_type_info=%lx\n", err_type_info); + + sprintf(fn, "%s/err_struct_info", path); + if (rd(fn, &err_struct_info)<0) { + perror("err_struct_info reading error.\n"); + return -1; + } + printf("err_struct_info=%lx\n", err_struct_info); + + sprintf(fn, "%s/err_data_buffer", path); + if (rd(fn, &err_data_buffer)<0) { + perror("err_data_buffer reading error.\n"); + return -1; + } + printf("err_data_buffer=%lx\n", err_data_buffer); + + sprintf(fn, "%s/status", path); + if (rd("status", (u64*)&status)<0) { + perror("status reading error.\n"); + return -1; + } + printf("status=%d\n", status); + + sprintf(fn, "%s/capabilities", path); + if (rd(fn,&capabilities)<0) { + perror("capabilities reading error.\n"); + return -1; + } + printf("capabilities=%lx\n", capabilities); + + sprintf(fn, "%s/resources", path); + if (rd(fn, &resources)<0) { + perror("resources reading error.\n"); + return -1; + } + printf("resources=%lx\n", resources); + + return 0; +} + +int query_capabilities(char *path, err_type_info_t err_type_info, + u64 *capabilities) +{ + char fn[MAX_FN_SIZE]; + err_struct_info_t err_struct_info; + err_data_buffer_t err_data_buffer; + + err_struct_info.err_struct_info=0; + memset(err_data_buffer.err_data_buffer, -1, ERR_DATA_BUFFER_SIZE*8); + + sprintf(fn, "%s/err_type_info", path); + wr(fn, err_type_info.err_type_info); + sprintf(fn, "%s/err_struct_info", path); + wr(fn, 0x0); + sprintf(fn, "%s/err_data_buffer", path); + wr_multi(fn, err_data_buffer.err_data_buffer, ERR_DATA_BUFFER_SIZE); + + // Fire pal_mc_error_inject procedure. + sprintf(fn, "%s/call_start", path); + wr(fn, mode); + + if (rd_capabilities(path, capabilities)<0) + return -1; + + return 0; +} + +int query_all_capabilities() +{ + int status; + err_type_info_t err_type_info; + int err_sev, err_struct, struct_hier; + int cap=0; + u64 capabilities; + char path[MAX_FN_SIZE]; + + err_type_info.err_type_info=0; // Initial + err_type_info.err_type_info_u.mode=0; // Query mode; + err_type_info.err_type_info_u.err_inj=0; + + printf("All capabilities implemented in pal_mc_error_inject:\n"); + sprintf(path, PATH_FORMAT ,0); + for (err_sev=0;err_sev<3;err_sev++) + for (err_struct=0;err_struct<5;err_struct++) + for (struct_hier=0;struct_hier<5;struct_hier++) + { + status=-1; + capabilities=0; + err_type_info.err_type_info_u.err_sev=err_sev; + err_type_info.err_type_info_u.err_struct=err_struct; + err_type_info.err_type_info_u.struct_hier=struct_hier; + + if (query_capabilities(path, err_type_info, &capabilities)<0) + continue; + + if (rd_status(path, &status)<0) + continue; + + if (status==0) { + cap=1; + printf("For err_sev=%d, err_struct=%d, struct_hier=%d: ", + err_sev, err_struct, struct_hier); + printf("capabilities 0x%lx\n", capabilities); + } + } + if (!cap) { + printf("No capabilities supported.\n"); + return 0; + } + + return 0; +} + +int err_inject(int cpu, char *path, err_type_info_t err_type_info, + err_struct_info_t err_struct_info, + err_data_buffer_t err_data_buffer) +{ + int status; + char fn[MAX_FN_SIZE]; + + log_info(cpu, "err_type_info=%lx, err_struct_info=%lx, ", + err_type_info.err_type_info, + err_struct_info.err_struct_info); + log_info(cpu,"err_data_buffer=[%lx,%lx,%lx]\n", + err_data_buffer.err_data_buffer[0], + err_data_buffer.err_data_buffer[1], + err_data_buffer.err_data_buffer[2]); + sprintf(fn, "%s/err_type_info", path); + wr(fn, err_type_info.err_type_info); + sprintf(fn, "%s/err_struct_info", path); + wr(fn, err_struct_info.err_struct_info); + sprintf(fn, "%s/err_data_buffer", path); + wr_multi(fn, err_data_buffer.err_data_buffer, ERR_DATA_BUFFER_SIZE); + + // Fire pal_mc_error_inject procedure. + sprintf(fn, "%s/call_start", path); + wr(fn,mode); + + if (rd_status(path, &status)<0) { + vbprintf("fail: read status\n"); + return -100; + } + + if (status!=0) { + log_info(cpu, "fail: status=%d\n", status); + return status; + } + + return status; +} + +static int construct_data_buf(char *path, err_type_info_t err_type_info, + err_struct_info_t err_struct_info, + err_data_buffer_t *err_data_buffer, + void *va1) +{ + char fn[MAX_FN_SIZE]; + u64 virt_addr=0, phys_addr=0; + + vbprintf("va1=%lx\n", (u64)va1); + memset(&err_data_buffer->err_data_buffer_cache, 0, ERR_DATA_BUFFER_SIZE*8); + + switch (err_type_info.err_type_info_u.err_struct) { + case 1: // Cache + switch (err_struct_info.err_struct_info_cache.cl_id) { + case 1: //Virtual addr + err_data_buffer->err_data_buffer_cache.inj_addr=(u64)va1; + break; + case 2: //Phys addr + sprintf(fn, "%s/virtual_to_phys", path); + virt_addr=(u64)va1; + if (wr(fn,virt_addr)<0) + return -1; + rd(fn, &phys_addr); + err_data_buffer->err_data_buffer_cache.inj_addr=phys_addr; + break; + default: + printf("Not supported cl_id\n"); + break; + } + break; + case 2: // TLB + break; + case 3: // Register file + break; + case 4: // Bus/system interconnect + default: + printf("Not supported err_struct\n"); + break; + } + + return 0; +} + +typedef struct { + u64 cpu; + u64 loop; + u64 interval; + u64 err_type_info; + u64 err_struct_info; + u64 err_data_buffer[ERR_DATA_BUFFER_SIZE]; +} parameters_t; + +parameters_t line_para; +int para; + +static int empty_data_buffer(u64 *err_data_buffer) +{ + int empty=1; + int i; + + for (i=0;i<ERR_DATA_BUFFER_SIZE; i++) + if (err_data_buffer[i]!=-1) + empty=0; + + return empty; +} + +int err_inj() +{ + err_type_info_t err_type_info; + err_struct_info_t err_struct_info; + err_data_buffer_t err_data_buffer; + int count; + FILE *fp; + unsigned long cpu, loop, interval, err_type_info_conf, err_struct_info_conf; + u64 err_data_buffer_conf[ERR_DATA_BUFFER_SIZE]; + int num; + int i; + char path[MAX_FN_SIZE]; + parameters_t parameters[MAX_TASK_NUM]={}; + pid_t child_pid[MAX_TASK_NUM]; + time_t current_time; + int status; + + if (!para) { + fp=fopen("err.conf", "r"); + if (fp==NULL) { + perror("Error open err.conf"); + return -1; + } + + num=0; + while (!feof(fp)) { + char buf[256]; + memset(buf,0,256); + fgets(buf, 256, fp); + count=sscanf(buf, "%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx\n", + &cpu, &loop, &interval,&err_type_info_conf, + &err_struct_info_conf, + &err_data_buffer_conf[0], + &err_data_buffer_conf[1], + &err_data_buffer_conf[2]); + if (count!=PARA_FIELD_NUM+3) { + err_data_buffer_conf[0]=-1; + err_data_buffer_conf[1]=-1; + err_data_buffer_conf[2]=-1; + count=sscanf(buf, "%lx, %lx, %lx, %lx, %lx\n", + &cpu, &loop, &interval,&err_type_info_conf, + &err_struct_info_conf); + if (count!=PARA_FIELD_NUM) + continue; + } + + parameters[num].cpu=cpu; + parameters[num].loop=loop; + parameters[num].interval= interval>MIN_INTERVAL + ?interval:MIN_INTERVAL; + parameters[num].err_type_info=err_type_info_conf; + parameters[num].err_struct_info=err_struct_info_conf; + memcpy(parameters[num++].err_data_buffer, + err_data_buffer_conf,ERR_DATA_BUFFER_SIZE*8) ; + + if (num>=MAX_TASK_NUM) + break; + } + } + else { + parameters[0].cpu=line_para.cpu; + parameters[0].loop=line_para.loop; + parameters[0].interval= line_para.interval>MIN_INTERVAL + ?line_para.interval:MIN_INTERVAL; + parameters[0].err_type_info=line_para.err_type_info; + parameters[0].err_struct_info=line_para.err_struct_info; + memcpy(parameters[0].err_data_buffer, + line_para.err_data_buffer,ERR_DATA_BUFFER_SIZE*8) ; + + num=1; + } + + /* Create semaphore: If one_lock, one semaphore for all processors. + Otherwise, one sempaphore for each processor. */ + if (one_lock) { + if (create_sem(0)) { + printf("Can not create semaphore...exit\n"); + free_sem(0); + return -1; + } + } + else { + for (i=0;i<num;i++) { + if (create_sem(parameters[i].cpu)) { + printf("Can not create semaphore for cpu%d...exit\n",i); + free_sem(parameters[num].cpu); + return -1; + } + } + } + + /* Create a shm segment which will be used to inject/consume errors on.*/ + if (create_shm()==-1) { + printf("Error to create shm...exit\n"); + return -1; + } + + for (i=0;i<num;i++) { + pid_t pid; + + current_time=time(NULL); + log_info(parameters[i].cpu, "\nBegine at %s", ctime(¤t_time)); + log_info(parameters[i].cpu, "Configurations:\n"); + log_info(parameters[i].cpu,"On cpu%ld: loop=%lx, interval=%lx(s)", + parameters[i].cpu, + parameters[i].loop, + parameters[i].interval); + log_info(parameters[i].cpu," err_type_info=%lx,err_struct_info=%lx\n", + parameters[i].err_type_info, + parameters[i].err_struct_info); + + sprintf(path, PATH_FORMAT, (int)parameters[i].cpu); + err_type_info.err_type_info=parameters[i].err_type_info; + err_struct_info.err_struct_info=parameters[i].err_struct_info; + memcpy(err_data_buffer.err_data_buffer, + parameters[i].err_data_buffer, + ERR_DATA_BUFFER_SIZE*8); + + pid=fork(); + if (pid==0) { + unsigned long mask[MASK_SIZE]; + int j, k; + + void *va1, *va2; + + /* Allocate two memory areas va1 and va2 in shm */ + va1=shmaddr+parameters[i].cpu*PAGE_SIZE; + va2=shmaddr+parameters[i].cpu*PAGE_SIZE+PAGE_SIZE; + + vbprintf("va1=%lx, va2=%lx\n", (u64)va1, (u64)va2); + memset(va1, 0x1, PAGE_SIZE); + memset(va2, 0x2, PAGE_SIZE); + + if (empty_data_buffer(err_data_buffer.err_data_buffer)) + /* If not specified yet, construct data buffer + * with va1 + */ + construct_data_buf(path, err_type_info, + err_struct_info, &err_data_buffer,va1); + + for (j=0;j<MASK_SIZE;j++) + mask[j]=0; + + cpu=parameters[i].cpu; + k = cpu%64; + j = cpu/64; + mask[j]=1<<k; + + if (sched_setaffinity(0, MASK_SIZE*8, mask)==-1) { + perror("Error sched_setaffinity:"); + return -1; + } + + for (j=0; j<parameters[i].loop; j++) { + log_info(parameters[i].cpu,"Injection "); + log_info(parameters[i].cpu,"on cpu%ld: #%d/%ld ", + + parameters[i].cpu,j+1, parameters[i].loop); + + /* Hold the lock */ + if (one_lock) + lock(0); + else + /* Hold lock on this cpu */ + lock(parameters[i].cpu); + + if ((status=err_inject(parameters[i].cpu, + path, err_type_info, + err_struct_info, err_data_buffer)) + ==0) { + /* consume the error for "inject only"*/ + memcpy(va2, va1, PAGE_SIZE); + memcpy(va1, va2, PAGE_SIZE); + log_info(parameters[i].cpu, + "successful\n"); + } + else { + log_info(parameters[i].cpu,"fail:"); + log_info(parameters[i].cpu, + "status=%d\n", status); + unlock(parameters[i].cpu); + break; + } + if (one_lock) + /* Release the lock */ + unlock(0); + /* Release lock on this cpu */ + else + unlock(parameters[i].cpu); + + if (j < parameters[i].loop-1) + sleep(parameters[i].interval); + } + current_time=time(NULL); + log_info(parameters[i].cpu, "Done at %s", ctime(¤t_time)); + return 0; + } + else if (pid<0) { + perror("Error fork:"); + continue; + } + child_pid[i]=pid; + } + for (i=0;i<num;i++) + waitpid(child_pid[i], NULL, 0); + + if (one_lock) + free_sem(0); + else + for (i=0;i<num;i++) + free_sem(parameters[i].cpu); + + printf("All done.\n"); + + return 0; +} + +void help() +{ + printf("err_inject_tool:\n"); + printf("\t-q: query all capabilities. default: off\n"); + printf("\t-m: procedure mode. 1: physical 2: virtual. default: 1\n"); + printf("\t-i: inject errors. default: off\n"); + printf("\t-l: one lock per cpu. default: one lock for all\n"); + printf("\t-e: error parameters:\n"); + printf("\t\tcpu,loop,interval,err_type_info,err_struct_info[,err_data_buffer[0],err_data_buffer[1],err_data_buffer[2]]\n"); + printf("\t\t cpu: logical cpu number the error will be inject in.\n"); + printf("\t\t loop: times the error will be injected.\n"); + printf("\t\t interval: In second. every so often one error is injected.\n"); + printf("\t\t err_type_info, err_struct_info: PAL parameters.\n"); + printf("\t\t err_data_buffer: PAL parameter. Optional. If not present,\n"); + printf("\t\t it's constructed by tool automatically. Be\n"); + printf("\t\t careful to provide err_data_buffer and make\n"); + printf("\t\t sure it's working with the environment.\n"); + printf("\t Note:no space between error parameters.\n"); + printf("\t default: Take error parameters from err.conf instead of command line.\n"); + printf("\t-v: verbose. default: off\n"); + printf("\t-h: help\n\n"); + printf("The tool will take err.conf file as "); + printf("input to inject single or multiple errors "); + printf("on one or multiple cpus in parallel.\n"); +} + +int main(int argc, char **argv) +{ + char c; + int do_err_inj=0; + int do_query_all=0; + int count; + u32 m; + + /* Default one lock for all cpu's */ + one_lock=1; + while ((c = getopt(argc, argv, "m:iqvhle:")) != EOF) + switch (c) { + case 'm': /* Procedure mode. 1: phys 2: virt */ + count=sscanf(optarg, "%x", &m); + if (count!=1 || (m!=1 && m!=2)) { + printf("Wrong mode number.\n"); + help(); + return -1; + } + mode=m; + break; + case 'i': /* Inject errors */ + do_err_inj=1; + break; + case 'q': /* Query */ + do_query_all=1; + break; + case 'v': /* Verbose */ + verbose=1; + break; + case 'l': /* One lock per cpu */ + one_lock=0; + break; + case 'e': /* error arguments */ + /* Take parameters: + * #cpu, loop, interval, err_type_info, err_struct_info[, err_data_buffer] + * err_data_buffer is optional. Recommend not to specify + * err_data_buffer. Better to use tool to generate it. + */ + count=sscanf(optarg, + "%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx\n", + &line_para.cpu, + &line_para.loop, + &line_para.interval, + &line_para.err_type_info, + &line_para.err_struct_info, + &line_para.err_data_buffer[0], + &line_para.err_data_buffer[1], + &line_para.err_data_buffer[2]); + if (count!=PARA_FIELD_NUM+3) { + line_para.err_data_buffer[0]=-1, + line_para.err_data_buffer[1]=-1, + line_para.err_data_buffer[2]=-1; + count=sscanf(optarg, "%lx, %lx, %lx, %lx, %lx\n", + &line_para.cpu, + &line_para.loop, + &line_para.interval, + &line_para.err_type_info, + &line_para.err_struct_info); + if (count!=PARA_FIELD_NUM) { + printf("Wrong error arguments.\n"); + help(); + return -1; + } + } + para=1; + break; + continue; + break; + case 'h': + help(); + return 0; + default: + break; + } + + if (do_query_all) + query_all_capabilities(); + if (do_err_inj) + err_inj(); + + if (!do_query_all && !do_err_inj) + help(); + + return 0; +} + diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index e19185d2655..09866581a32 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -438,6 +438,16 @@ config IA64_PALINFO To use this option, you have to ensure that the "/proc file system support" (CONFIG_PROC_FS) is enabled, too. +config IA64_MC_ERR_INJECT + tristate "MC error injection support" + help + Selets whether support for MC error injection. By enabling the + support, kernel provide sysfs interface for user application to + call MC error injection PAL procedure to inject various errors. + This is a useful tool for MCA testing. + + If you're unsure, do not select this option. + config SGI_SN def_bool y if (IA64_SGI_SN2 || IA64_GENERIC) diff --git a/arch/ia64/defconfig b/arch/ia64/defconfig index 153bfdc0182..90bd9601cdd 100644 --- a/arch/ia64/defconfig +++ b/arch/ia64/defconfig @@ -164,6 +164,7 @@ CONFIG_COMPAT=y CONFIG_IA64_MCA_RECOVERY=y CONFIG_PERFMON=y CONFIG_IA64_PALINFO=y +# CONFIG_MC_ERR_INJECT is not set CONFIG_SGI_SN=y # CONFIG_IA64_ESI is not set diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index 098ee605bf5..33e5a598672 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR) += uncached.o obj-$(CONFIG_AUDIT) += audit.o obj-$(CONFIG_PCI_MSI) += msi_ia64.o mca_recovery-y += mca_drv.o mca_drv_asm.o +obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o obj-$(CONFIG_IA64_ESI) += esi.o ifneq ($(CONFIG_IA64_ESI),) diff --git a/arch/ia64/kernel/err_inject.c b/arch/ia64/kernel/err_inject.c new file mode 100644 index 00000000000..d3e9f33e8bd --- /dev/null +++ b/arch/ia64/kernel/err_inject.c @@ -0,0 +1,293 @@ +/* + * err_inject.c - + * 1.) Inject errors to a processor. + * 2.) Query error injection capabilities. + * This driver along with user space code can be acting as an error + * injection tool. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Written by: Fenghua Yu <fenghua.yu@intel.com>, Intel Corporation + * Copyright (C) 2006, Intel Corp. All rights reserved. + * + */ +#include <linux/sysdev.h> +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/cpu.h> +#include <linux/module.h> + +#define ERR_INJ_DEBUG + +#define ERR_DATA_BUFFER_SIZE 3 // Three 8-byte; + +#define define_one_ro(name) \ +static SYSDEV_ATTR(name, 0444, show_##name, NULL) + +#define define_one_rw(name) \ +static SYSDEV_ATTR(name, 0644, show_##name, store_##name) + +static u64 call_start[NR_CPUS]; +static u64 phys_addr[NR_CPUS]; +static u64 err_type_info[NR_CPUS]; +static u64 err_struct_info[NR_CPUS]; +static struct { + u64 data1; + u64 data2; + u64 data3; +} __attribute__((__aligned__(16))) err_data_buffer[NR_CPUS]; +static s64 status[NR_CPUS]; +static u64 capabilities[NR_CPUS]; +static u64 resources[NR_CPUS]; + +#define show(name) \ +static ssize_t \ +show_##name(struct sys_device *dev, char *buf) \ +{ \ + u32 cpu=dev->id; \ + return sprintf(buf, "%lx\n", name[cpu]); \ +} + +#define store(name) \ +static ssize_t \ +store_##name(struct sys_device *dev, const char *buf, size_t size) \ +{ \ + unsigned int cpu=dev->id; \ + name[cpu] = simple_strtoull(buf, NULL, 16); \ + return size; \ +} + +show(call_start) + +/* It's user's responsibility to call the PAL procedure on a specific + * processor. The cpu number in driver is only used for storing data. + */ +static ssize_t +store_call_start(struct sys_device *dev, const char *buf, size_t size) +{ + unsigned int cpu=dev->id; + unsigned long call_start = simple_strtoull(buf, NULL, 16); + +#ifdef ERR_INJ_DEBUG + printk(KERN_DEBUG "pal_mc_err_inject for cpu%d:\n", cpu); + printk(KERN_DEBUG "err_type_info=%lx,\n", err_type_info[cpu]); + printk(KERN_DEBUG "err_struct_info=%lx,\n", err_struct_info[cpu]); + printk(KERN_DEBUG "err_data_buffer=%lx, %lx, %lx.\n", + err_data_buffer[cpu].data1, + err_data_buffer[cpu].data2, + err_data_buffer[cpu].data3); +#endif + switch (call_start) { + case 0: /* Do nothing. */ + break; + case 1: /* Call pal_mc_error_inject in physical mode. */ + status[cpu]=ia64_pal_mc_error_inject_phys(err_type_info[cpu], + err_struct_info[cpu], + ia64_tpa(&err_data_buffer[cpu]), + &capabilities[cpu], + &resources[cpu]); + break; + case 2: /* Call pal_mc_error_inject in virtual mode. */ + status[cpu]=ia64_pal_mc_error_inject_virt(err_type_info[cpu], + err_struct_info[cpu], + ia64_tpa(&err_data_buffer[cpu]), + &capabilities[cpu], + &resources[cpu]); + break; + default: + status[cpu] = -EINVAL; + break; + } + +#ifdef ERR_INJ_DEBUG + printk(KERN_DEBUG "Returns: status=%d,\n", (int)status[cpu]); + printk(KERN_DEBUG "capapbilities=%lx,\n", capabilities[cpu]); + printk(KERN_DEBUG "resources=%lx\n", resources[cpu]); +#endif + return size; +} + +show(err_type_info) +store(err_type_info) + +static ssize_t +show_virtual_to_phys(struct sys_device *dev, char *buf) +{ + unsigned int cpu=dev->id; + return sprintf(buf, "%lx\n", phys_addr[cpu]); +} + +static ssize_t +store_virtual_to_phys(struct sys_device *dev, const char *buf, size_t size) +{ + unsigned int cpu=dev->id; + u64 virt_addr=simple_strtoull(buf, NULL, 16); + int ret; + + ret = get_user_pages(current, current->mm, virt_addr, + 1, VM_READ, 0, NULL, NULL); + if (ret<=0) { +#ifdef ERR_INJ_DEBUG + printk("Virtual address %lx is not existing.\n",virt_addr); +#endif + return -EINVAL; + } + + phys_addr[cpu] = ia64_tpa(virt_addr); + return size; +} + +show(err_struct_info) +store(err_struct_info) + +static ssize_t +show_err_data_buffer(struct sys_device *dev, char *buf) +{ + unsigned int cpu=dev->id; + + return sprintf(buf, "%lx, %lx, %lx\n", + err_data_buffer[cpu].data1, + err_data_buffer[cpu].data2, + err_data_buffer[cpu].data3); +} + +static ssize_t +store_err_data_buffer(struct sys_device *dev, const char *buf, size_t size) +{ + unsigned int cpu=dev->id; + int ret; + +#ifdef ERR_INJ_DEBUG + printk("write err_data_buffer=[%lx,%lx,%lx] on cpu%d\n", + err_data_buffer[cpu].data1, + err_data_buffer[cpu].data2, + err_data_buffer[cpu].data3, + cpu); +#endif + ret=sscanf(buf, "%lx, %lx, %lx", + &err_data_buffer[cpu].data1, + &err_data_buffer[cpu].data2, + &err_data_buffer[cpu].data3); + if (ret!=ERR_DATA_BUFFER_SIZE) + return -EINVAL; + + return size; +} + +show(status) +show(capabilities) +show(resources) + +define_one_rw(call_start); +define_one_rw(err_type_info); +define_one_rw(err_struct_info); +define_one_rw(err_data_buffer); +define_one_rw(virtual_to_phys); +define_one_ro(status); +define_one_ro(capabilities); +define_one_ro(resources); + +static struct attribute *default_attrs[] = { + &attr_call_start.attr, + &attr_virtual_to_phys.attr, + &attr_err_type_info.attr, + &attr_err_struct_info.attr, + &attr_err_data_buffer.attr, + &attr_status.attr, + &attr_capabilities.attr, + &attr_resources.attr, + NULL +}; + +static struct attribute_group err_inject_attr_group = { + .attrs = default_attrs, + .name = "err_inject" +}; +/* Add/Remove err_inject interface for CPU device */ +static int __cpuinit err_inject_add_dev(struct sys_device * sys_dev) +{ + return sysfs_create_group(&sys_dev->kobj, &err_inject_attr_group); +} + +static int __cpuinit err_inject_remove_dev(struct sys_device * sys_dev) +{ + sysfs_remove_group(&sys_dev->kobj, &err_inject_attr_group); + return 0; +} +static int __cpuinit err_inject_cpu_callback(struct notifier_block *nfb, + unsigned long action, void *hcpu) +{ + unsigned int cpu = (unsigned long)hcpu; + struct sys_device *sys_dev; + + sys_dev = get_cpu_sysdev(cpu); + switch (action) { + case CPU_ONLINE: + err_inject_add_dev(sys_dev); + break; + case CPU_DEAD: + err_inject_remove_dev(sys_dev); + break; + } + + return NOTIFY_OK; +} + +static struct notifier_block __cpuinitdata err_inject_cpu_notifier = +{ + .notifier_call = err_inject_cpu_callback, +}; + +static int __init +err_inject_init(void) +{ + int i; + +#ifdef ERR_INJ_DEBUG + printk(KERN_INFO "Enter error injection driver.\n"); +#endif + for_each_online_cpu(i) { + err_inject_cpu_callback(&err_inject_cpu_notifier, CPU_ONLINE, + (void *)(long)i); + } + + register_hotcpu_notifier(&err_inject_cpu_notifier); + + return 0; +} + +static void __exit +err_inject_exit(void) +{ + int i; + struct sys_device *sys_dev; + +#ifdef ERR_INJ_DEBUG + printk(KERN_INFO "Exit error injection driver.\n"); +#endif + for_each_online_cpu(i) { + sys_dev = get_cpu_sysdev(i); + sysfs_remove_group(&sys_dev->kobj, &err_inject_attr_group); + } + unregister_hotcpu_notifier(&err_inject_cpu_notifier); +} + +module_init(err_inject_init); +module_exit(err_inject_exit); + +MODULE_AUTHOR("Fenghua Yu <fenghua.yu@intel.com>"); +MODULE_DESCRIPTION("MC error injection kenrel sysfs interface"); +MODULE_LICENSE("GPL"); diff --git a/include/asm-ia64/pal.h b/include/asm-ia64/pal.h index 67656ce767c..abfcb3a2588 100644 --- a/include/asm-ia64/pal.h +++ b/include/asm-ia64/pal.h @@ -89,6 +89,8 @@ #define PAL_GET_PSTATE_TYPE_AVGNORESET 2 #define PAL_GET_PSTATE_TYPE_INSTANT 3 +#define PAL_MC_ERROR_INJECT 276 /* Injects processor error or returns injection capabilities */ + #ifndef __ASSEMBLY__ #include <linux/types.h> @@ -1235,6 +1237,37 @@ ia64_pal_mc_error_info (u64 info_index, u64 type_index, u64 *size, u64 *error_in return iprv.status; } +/* Injects the requested processor error or returns info on + * supported injection capabilities for current processor implementation + */ +static inline s64 +ia64_pal_mc_error_inject_phys (u64 err_type_info, u64 err_struct_info, + u64 err_data_buffer, u64 *capabilities, u64 *resources) +{ + struct ia64_pal_retval iprv; + PAL_CALL_PHYS_STK(iprv, PAL_MC_ERROR_INJECT, err_type_info, + err_struct_info, err_data_buffer); + if (capabilities) + *capabilities= iprv.v0; + if (resources) + *resources= iprv.v1; + return iprv.status; +} + +static inline s64 +ia64_pal_mc_error_inject_virt (u64 err_type_info, u64 err_struct_info, + u64 err_data_buffer, u64 *capabilities, u64 *resources) +{ + struct ia64_pal_retval iprv; + PAL_CALL_STK(iprv, PAL_MC_ERROR_INJECT, err_type_info, + err_struct_info, err_data_buffer); + if (capabilities) + *capabilities= iprv.v0; + if (resources) + *resources= iprv.v1; + return iprv.status; +} + /* Inform PALE_CHECK whether a machine check is expected so that PALE_CHECK willnot * attempt to correct any expected machine checks. */ |