usr/src/cmd/fm/modules/common/cpumem-retire/cma_cpu_arch.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <cma.h>
  30
  31 #include <fcntl.h>
  32 #include <unistd.h>
  33 #include <strings.h>
  34 #include <errno.h>
  35 #include <time.h>
  36 #include <fm/fmd_api.h>
  37 #include <sys/fm/protocol.h>
  38 #include <sys/bl.h>
  39 #include <sys/processor.h>
  40
  41 int
  42 cma_cpu_blacklist(fmd_hdl_t *hdl, nvlist_t *nvl, nvlist_t *asru,
  43     boolean_t repair)
  44 {
  45         bl_req_t blr;
  46         nvlist_t *fmri;
  47         char *fmribuf;
  48         size_t fmrisz;
  49         int fd, rc, err;
  50         char *class;
  51
  52         /*
  53          * Some platforms have special unums for the E$ DIMMs.  If we're dealing
  54          * with a platform that has these unums, one will have been added to the
  55          * fault as the resource.  We'll use that for the blacklisting.  If we
  56          * can't find a resource, we'll fall back to the ASRU.
  57          */
  58         if (nvlist_lookup_nvlist(nvl, FM_FAULT_RESOURCE, &fmri) != 0)
  59                 fmri = asru;
  60
  61         if ((nvlist_lookup_string(nvl, FM_CLASS, &class) != 0) ||
  62             (class == NULL) || (*class == '\0')) {
  63                 fmd_hdl_debug(hdl, "failed to get the fault class name\n");
  64                 errno = EINVAL;
  65                 return (-1);
  66         }
  67
  68         if ((fd = open("/dev/bl", O_RDONLY)) < 0)
  69                 return (-1); /* errno is set for us */
  70
  71         if ((errno = nvlist_size(fmri, &fmrisz, NV_ENCODE_NATIVE)) != 0 ||
  72             (fmribuf = fmd_hdl_alloc(hdl, fmrisz, FMD_SLEEP)) == NULL) {
  73                 (void) close(fd);
  74                 return (-1); /* errno is set for us */
  75         }
  76
  77         if ((errno = nvlist_pack(fmri, &fmribuf, &fmrisz,
  78             NV_ENCODE_NATIVE, 0)) != 0) {
  79                 fmd_hdl_free(hdl, fmribuf, fmrisz);
  80                 (void) close(fd);
  81                 return (-1); /* errno is set for us */
  82         }
  83
  84         blr.bl_fmri = fmribuf;
  85         blr.bl_fmrisz = fmrisz;
  86         blr.bl_class = class;
  87
  88         rc = ioctl(fd, repair ? BLIOC_DELETE : BLIOC_INSERT, &blr);
  89         err = errno;
  90
  91         fmd_hdl_free(hdl, fmribuf, fmrisz);
  92         (void) close(fd);
  93
  94         if (rc < 0 && err != ENOTSUP) {
  95                 errno = err;
  96                 return (-1);
  97         }
  98
  99         return (0);
 100 }
 101
 102 /* ARGSUSED */
 103 int
 104 cma_cpu_statechange(fmd_hdl_t *hdl, nvlist_t *asru, const char *uuid,
 105     int cpustate, boolean_t repair)
 106 {
 107         int i;
 108         uint_t cpuid;
 109
 110         if (nvlist_lookup_uint32(asru, FM_FMRI_CPU_ID, &cpuid) != 0) {
 111                 fmd_hdl_debug(hdl, "missing '%s'\n", FM_FMRI_CPU_ID);
 112                 cma_stats.bad_flts.fmds_value.ui64++;
 113                 return (CMA_RA_FAILURE);
 114         }
 115
 116         for (i = 0; i < cma.cma_cpu_tries;
 117             i++, (void) nanosleep(&cma.cma_cpu_delay, NULL)) {
 118                 int oldstate;
 119                 if ((oldstate = p_online(cpuid, cpustate)) != -1) {
 120                         fmd_hdl_debug(hdl, "changed cpu %u state from \"%s\" "
 121                             "to \"%s\"\n", cpuid, p_online_state_fmt(oldstate),
 122                             p_online_state_fmt(cpustate));
 123                         if (repair)
 124                                 cma_stats.cpu_repairs.fmds_value.ui64++;
 125                         else
 126                                 cma_stats.cpu_flts.fmds_value.ui64++;
 127                         return (CMA_RA_SUCCESS);
 128                 }
 129         }
 130
 131         fmd_hdl_debug(hdl, "failed to changed cpu %u state to \"%s\": %s\n",
 132             cpuid, p_online_state_fmt(cpustate), strerror(errno));
 133         cma_stats.cpu_fails.fmds_value.ui64++;
 134         return (CMA_RA_FAILURE);
 135 }