/*      $NetBSD: devlist.c,v 1.6 2023/03/05 23:24:06 simonb Exp $       */

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (C) 2012-2013 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:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: devlist.c,v 1.6 2023/03/05 23:24:06 simonb Exp $");
#if 0
__FBSDID("$FreeBSD: head/sbin/nvmecontrol/devlist.c 329824 2018-02-22 13:32:31Z wma $");
#endif
#endif

#include <sys/param.h>

#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "nvmectl.h"

__dead static void
devlist_usage(void)
{
        fprintf(stderr, "usage:\n");
        fprintf(stderr, "\t%s " DEVLIST_USAGE, getprogname());
        exit(1);
}

static inline uint32_t
ns_get_sector_size(struct nvm_identify_namespace *nsdata)
{

        return 1 << nsdata->lbaf[NVME_ID_NS_FLBAS(nsdata->flbas)].lbads;
}

void
devlist(int argc, char *argv[])
{
        struct nvm_identify_controller  cdata;
        struct nvm_identify_namespace   nsdata;
        char                            name[64];
        uint8_t                         mn[64];
        uint32_t                        i;
        int                             ch, ctrlr, fd, found, ret;

        while ((ch = getopt(argc, argv, "")) != -1) {
                switch (ch) {
                default:
                        devlist_usage();
                }
        }

        ctrlr = -1;
        found = 0;

        while (1) {
                ctrlr++;
                sprintf(name, "%s%d", NVME_CTRLR_PREFIX, ctrlr);

                ret = open_dev(name, &fd, 0, 0);

                if (ret != 0) {
                        if (ret == EACCES) {
                                warnx("could not open "_PATH_DEV"%s\n", name);
                                continue;
                        } else
                                break;
                }

                found++;
                read_controller_data(fd, &cdata);
                nvme_strvis(mn, sizeof(mn), cdata.mn, sizeof(cdata.mn));
                printf("%6s: %s\n", name, mn);

                for (i = 0; i < cdata.nn; i++) {
                        sprintf(name, "%s%d%s%d", NVME_CTRLR_PREFIX, ctrlr,
                            NVME_NS_PREFIX, i+1);
                        read_namespace_data(fd, i+1, &nsdata);
                        printf("  %10s (%lldMB)\n",
                                name,
                                nsdata.nsze *
                                (long long)ns_get_sector_size(&nsdata) /
                                1024 / 1024);
                }

                close(fd);
        }

        if (found == 0) {
                printf("No NVMe controllers found.\n");
                exit(1);
        }

        exit(0);
}