Pull error-inject into release branch

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 000000000000..6449a7090dbb
--- /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(&current_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(&current_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 e19185d26554..09866581a326 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 153bfdc0182d..90bd9601cdde 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 098ee605bf5e..33e5a598672d 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 000000000000..d3e9f33e8bdd
--- /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 67656ce767c2..abfcb3a2588f 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.
  */