Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 132 insertions, 0 deletions

diff --git a/src/spdk/module/event/subsystems/vmd/vmd.c b/src/spdk/module/event/subsystems/vmd/vmd.c
new file mode 100644
index 000000000..55eb47019
--- /dev/null
+++ b/src/spdk/module/event/subsystems/vmd/vmd.c
@@ -0,0 +1,132 @@
+/*-
+ *   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);