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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/nvme.h"
#include "spdk/env.h"
#include "spdk/string.h"
struct ctrlr_entry {
struct spdk_nvme_ctrlr *ctrlr;
struct ctrlr_entry *next;
char name[1024];
};
struct ns_entry {
struct spdk_nvme_ctrlr *ctrlr;
struct spdk_nvme_ns *ns;
struct ns_entry *next;
struct spdk_nvme_qpair *qpair;
};
static struct ctrlr_entry *g_controllers = NULL;
static struct ns_entry *g_namespaces = NULL;
static int g_startup_time = 0;
static bool
probe_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
struct spdk_nvme_ctrlr_opts *opts)
{
printf("Attaching to %s\n", trid->traddr);
return true;
}
static void
attach_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
struct spdk_nvme_ctrlr *ctrlr, const struct spdk_nvme_ctrlr_opts *opts)
{
struct ctrlr_entry *entry;
const struct spdk_nvme_ctrlr_data *cdata;
entry = malloc(sizeof(struct ctrlr_entry));
if (entry == NULL) {
perror("ctrlr_entry malloc");
exit(1);
}
printf("Attached to %s\n", trid->traddr);
/*
* spdk_nvme_ctrlr is the logical abstraction in SPDK for an NVMe
* controller. During initialization, the IDENTIFY data for the
* controller is read using an NVMe admin command, and that data
* can be retrieved using spdk_nvme_ctrlr_get_data() to get
* detailed information on the controller. Refer to the NVMe
* specification for more details on IDENTIFY for NVMe controllers.
*/
cdata = spdk_nvme_ctrlr_get_data(ctrlr);
snprintf(entry->name, sizeof(entry->name), "%-20.20s (%-20.20s)", cdata->mn, cdata->sn);
entry->ctrlr = ctrlr;
entry->next = g_controllers;
g_controllers = entry;
}
static void
cleanup(void)
{
struct ns_entry *ns_entry = g_namespaces;
struct ctrlr_entry *ctrlr_entry = g_controllers;
while (ns_entry) {
struct ns_entry *next = ns_entry->next;
free(ns_entry);
ns_entry = next;
}
while (ctrlr_entry) {
struct ctrlr_entry *next = ctrlr_entry->next;
spdk_nvme_detach(ctrlr_entry->ctrlr);
free(ctrlr_entry);
ctrlr_entry = next;
}
}
static void
usage(const char *program_name)
{
printf("%s [options]", program_name);
printf("\n");
printf("options:\n");
printf(" -t The maximum time needed for startup. The unit is us. The value should be bigger than 0.\n");
}
static int
parse_args(int argc, char **argv)
{
int op;
while ((op = getopt(argc, argv, "t:")) != -1) {
switch (op) {
case 't':
g_startup_time = spdk_strtol(optarg, 10);
if (g_startup_time < 0) {
fprintf(stderr, "Invalid nvme startup time\n");
return g_startup_time;
}
break;
default:
usage(argv[0]);
return 1;
}
}
return 0;
}
int main(int argc, char **argv)
{
int rc;
struct spdk_env_opts opts;
uint64_t start_tsc, end_tsc, tsc_diff;
float time_used_in_usec;
rc = parse_args(argc, argv);
if (rc != 0) {
return rc;
}
if (g_startup_time == 0) {
usage(argv[0]);
return 1;
}
start_tsc = spdk_get_ticks();
/*
* SPDK relies on an abstraction around the local environment
* named env that handles memory allocation and PCI device operations.
* This library must be initialized first.
*
*/
spdk_env_opts_init(&opts);
opts.name = "startup";
opts.shm_id = 0;
if (spdk_env_init(&opts) < 0) {
fprintf(stderr, "Unable to initialize SPDK env\n");
return 1;
}
printf("Initializing NVMe Controllers\n");
/*
* Start the SPDK NVMe enumeration process. probe_cb will be called
* for each NVMe controller found, giving our application a choice on
* whether to attach to each controller. attach_cb will then be
* called for each controller after the SPDK NVMe driver has completed
* initializing the controller we chose to attach.
*/
rc = spdk_nvme_probe(NULL, NULL, probe_cb, attach_cb, NULL);
if (rc != 0) {
fprintf(stderr, "spdk_nvme_probe() failed\n");
cleanup();
return 1;
}
if (g_controllers == NULL) {
fprintf(stderr, "no NVMe controllers found\n");
return 0;
}
end_tsc = spdk_get_ticks();
tsc_diff = end_tsc - start_tsc;
time_used_in_usec = ((float)tsc_diff) * 1000 * 1000 / spdk_get_ticks_hz();
printf("Initialization complete.\n");
printf("Time used:%-16.3f(us).\n", time_used_in_usec);
if (time_used_in_usec > g_startup_time) {
fprintf(stderr, "Too long time for initialization.\n");
cleanup();
return 1;
}
cleanup();
return 0;
}
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