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/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "spdk/stdinc.h"
#include "spdk/conf.h"
#include "spdk/thread.h"
#include "spdk/likely.h"
#include "spdk/vmd.h"
#include "spdk_internal/event.h"
#include "event_vmd.h"
static struct spdk_poller *g_hotplug_poller;
static bool g_enabled;
static int
vmd_hotplug_monitor(void *ctx)
{
return spdk_vmd_hotplug_monitor();
}
int
vmd_subsystem_init(void)
{
int rc;
if (g_enabled) {
SPDK_ERRLOG("The initialization has already been performed\n");
return -EBUSY;
}
rc = spdk_vmd_init();
if (spdk_likely(rc != 0)) {
SPDK_ERRLOG("Failed to initialize the VMD library\n");
return rc;
}
assert(g_hotplug_poller == NULL);
g_hotplug_poller = SPDK_POLLER_REGISTER(vmd_hotplug_monitor, NULL, 1000000ULL);
if (g_hotplug_poller == NULL) {
SPDK_ERRLOG("Failed to register hotplug monitor poller\n");
return -ENOMEM;
}
g_enabled = true;
return 0;
}
static void
_vmd_subsystem_init(void)
{
struct spdk_conf_section *sp;
int rc = 0;
sp = spdk_conf_find_section(NULL, "Vmd");
if (sp != NULL) {
if (spdk_conf_section_get_boolval(sp, "Enable", false)) {
rc = vmd_subsystem_init();
}
}
spdk_subsystem_init_next(rc);
}
static void
vmd_subsystem_fini(void)
{
spdk_poller_unregister(&g_hotplug_poller);
spdk_vmd_fini();
spdk_subsystem_fini_next();
}
static void
vmd_write_config_json(struct spdk_json_write_ctx *w)
{
spdk_json_write_array_begin(w);
if (g_enabled) {
spdk_json_write_object_begin(w);
spdk_json_write_named_string(w, "method", "enable_vmd");
spdk_json_write_named_object_begin(w, "params");
spdk_json_write_object_end(w);
spdk_json_write_object_end(w);
}
spdk_json_write_array_end(w);
}
static struct spdk_subsystem g_spdk_subsystem_vmd = {
.name = "vmd",
.init = _vmd_subsystem_init,
.fini = vmd_subsystem_fini,
.config = NULL,
.write_config_json = vmd_write_config_json,
};
SPDK_SUBSYSTEM_REGISTER(g_spdk_subsystem_vmd);
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