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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2017-2020 Intel Corporation. All rights reserved.
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <syslog.h>
#include <stdlib.h>
#include <ndctl/libndctl.h>
static void do_notify(struct ndctl_dimm *dimm)
{
struct ndctl_cmd *s_cmd = ndctl_dimm_cmd_new_smart(dimm);
struct ndctl_cmd *st_cmd = NULL, *sst_cmd = NULL;
unsigned int orig_mtemp, orig_ctemp, orig_spare;
const char *name = ndctl_dimm_get_devname(dimm);
unsigned int alarm, mtemp, ctemp, spare, valid;
int rc, i;
if (!s_cmd) {
fprintf(stderr, "%s: no smart command support\n", name);
goto out;
}
rc = ndctl_cmd_submit(s_cmd);
if (rc < 0) {
fprintf(stderr, "%s: smart command failed: %d %s\n", name,
rc, strerror(errno));
goto out;
}
valid = ndctl_cmd_smart_get_flags(s_cmd);
alarm = ndctl_cmd_smart_get_alarm_flags(s_cmd);
mtemp = ndctl_cmd_smart_get_media_temperature(s_cmd);
ctemp = ndctl_cmd_smart_get_ctrl_temperature(s_cmd);
spare = ndctl_cmd_smart_get_spares(s_cmd);
fprintf(stderr, "%s: (smart) alarm%s: %#x mtemp%s: %.2f ctemp%s: %.2f spares%s: %d\n",
name,
valid & ND_SMART_ALARM_VALID ? "" : "(invalid)", alarm,
valid & ND_SMART_MTEMP_VALID ? "" : "(invalid)",
ndctl_decode_smart_temperature(mtemp),
valid & ND_SMART_CTEMP_VALID ? "" : "(invalid)",
ndctl_decode_smart_temperature(ctemp),
valid & ND_SMART_SPARES_VALID ? "" : "(invalid)", spare);
st_cmd = ndctl_dimm_cmd_new_smart_threshold(dimm);
if (!st_cmd) {
fprintf(stderr, "%s: no smart threshold command support\n", name);
goto out;
}
rc = ndctl_cmd_submit(st_cmd);
if (rc < 0) {
fprintf(stderr, "%s: smart threshold command failed: %d %s\n",
name, rc, strerror(errno));
goto out;
}
alarm = ndctl_cmd_smart_threshold_get_alarm_control(st_cmd);
mtemp = ndctl_cmd_smart_threshold_get_media_temperature(st_cmd);
ctemp = ndctl_cmd_smart_threshold_get_ctrl_temperature(st_cmd);
spare = ndctl_cmd_smart_threshold_get_spares(st_cmd);
fprintf(stderr, "%s: (smart thresh) alarm: %#x mtemp: %.2f ctemp: %.2f spares: %d\n",
name, alarm, ndctl_decode_smart_temperature(mtemp),
ndctl_decode_smart_temperature(ctemp), spare);
orig_mtemp = mtemp;
orig_ctemp = ctemp;
orig_spare = spare;
sst_cmd = ndctl_dimm_cmd_new_smart_set_threshold(st_cmd);
if (!sst_cmd) {
fprintf(stderr, "%s: no smart set threshold command support\n", name);
goto out;
}
alarm = ndctl_cmd_smart_threshold_get_supported_alarms(sst_cmd);
if (!alarm) {
fprintf(stderr, "%s: no smart set threshold command support\n", name);
goto out;
}
fprintf(stderr, "%s: supported alarms: %#x\n", name, alarm);
/*
* free the cmd now since we only needed the alarms and will
* create + issue a set_threshold test for each alarm
*/
ndctl_cmd_unref(sst_cmd);
for (i = 0; i < 3; i++) {
unsigned int set_alarm = 1 << i;
if (!(alarm & set_alarm))
continue;
sst_cmd = ndctl_dimm_cmd_new_smart_set_threshold(st_cmd);
if (!sst_cmd) {
fprintf(stderr, "%s: alloc failed: smart set threshold\n",
name);
goto out;
}
switch (set_alarm) {
case ND_SMART_SPARE_TRIP:
fprintf(stderr, "%s: set spare threshold: 99\n", name);
ndctl_cmd_smart_threshold_set_spares(sst_cmd, 99);
ndctl_cmd_smart_threshold_set_media_temperature(
sst_cmd, orig_mtemp);
ndctl_cmd_smart_threshold_set_ctrl_temperature(
sst_cmd, orig_ctemp);
break;
case ND_SMART_MTEMP_TRIP:
mtemp = ndctl_cmd_smart_get_media_temperature(s_cmd);
if (mtemp & (1 << 15))
mtemp *= 2;
else
mtemp /= 2;
fprintf(stderr, "%s: set mtemp threshold: %.2f\n", name,
ndctl_decode_smart_temperature(mtemp));
ndctl_cmd_smart_threshold_set_spares(
sst_cmd, orig_spare);
ndctl_cmd_smart_threshold_set_media_temperature(
sst_cmd, mtemp);
ndctl_cmd_smart_threshold_set_ctrl_temperature(
sst_cmd, orig_ctemp);
break;
case ND_SMART_CTEMP_TRIP:
ctemp = ndctl_cmd_smart_get_ctrl_temperature(s_cmd);
if (ctemp & (1 << 15))
ctemp *= 2;
else
ctemp /= 2;
fprintf(stderr, "%s: set ctemp threshold: %.2f\n", name,
ndctl_decode_smart_temperature(ctemp));
ndctl_cmd_smart_threshold_set_spares(
sst_cmd, orig_spare);
ndctl_cmd_smart_threshold_set_media_temperature(
sst_cmd, orig_mtemp);
ndctl_cmd_smart_threshold_set_ctrl_temperature(
sst_cmd, ctemp);
break;
default:
break;
}
ndctl_cmd_smart_threshold_set_alarm_control(sst_cmd, set_alarm);
rc = ndctl_cmd_submit(sst_cmd);
if (rc < 0) {
fprintf(stderr, "%s: smart set threshold command failed: %d %s\n",
name, rc, strerror(errno));
goto out;
}
ndctl_cmd_unref(sst_cmd);
}
fprintf(stderr, "%s: set thresholds back to defaults\n", name);
sst_cmd = ndctl_dimm_cmd_new_smart_set_threshold(st_cmd);
if (!sst_cmd) {
fprintf(stderr, "%s: alloc failed: smart set threshold\n",
name);
goto out;
}
rc = ndctl_cmd_submit(sst_cmd);
if (rc < 0) {
fprintf(stderr, "%s: smart set threshold defaults failed: %d %s\n",
name, rc, strerror(errno));
goto out;
}
out:
ndctl_cmd_unref(sst_cmd);
ndctl_cmd_unref(st_cmd);
ndctl_cmd_unref(s_cmd);
}
static void test_dimm_notify(struct ndctl_bus *bus)
{
struct ndctl_dimm *dimm;
ndctl_dimm_foreach(bus, dimm)
do_notify(dimm);
}
int main(int argc, char *argv[])
{
struct ndctl_ctx *ctx;
struct ndctl_bus *bus;
int rc = EXIT_FAILURE;
const char *provider;
rc = ndctl_new(&ctx);
if (rc < 0)
return EXIT_FAILURE;
if (argc != 2) {
fprintf(stderr, "usage: smart-notify <nvdimm-bus-provider>\n");
goto out;
}
ndctl_set_log_priority(ctx, LOG_DEBUG);
provider = argv[1];
bus = ndctl_bus_get_by_provider(ctx, provider);
if (!bus) {
fprintf(stderr, "smart-notify: unable to find bus (%s)\n",
provider);
goto out;
}
rc = EXIT_SUCCESS;
test_dimm_notify(bus);
out:
ndctl_unref(ctx);
return rc;
}
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