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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2023 Solidigm.
*
* Authors: leonardo.da.cunha@solidigm.com
*/
#include <errno.h>
#include "nvme-print.h"
#include "nvme-wrap.h"
#include "common.h"
int sldgm_get_drive_info(int argc, char **argv, struct command *cmd, struct plugin *plugin)
{
_cleanup_nvme_dev_ struct nvme_dev *dev = NULL;
const char *desc = "Get drive HW information";
const char *FTL_unit_size_str = "FTL_unit_size";
char *output_format = "normal";
enum nvme_print_flags flags;
nvme_root_t r;
nvme_ctrl_t c;
nvme_ns_t n;
struct nvme_id_ns ns = { 0 };
__u8 flbaf_inUse;
__u16 lba_size;
__u16 ftl_unit_size;
int err;
OPT_ARGS(opts) = {
OPT_FMT("output-format", 'o', &output_format, "normal|json"),
OPT_END()
};
err = parse_and_open(&dev, argc, argv, desc, opts);
if (err)
return err;
err = validate_output_format(output_format, &flags);
if ((err < 0) || !(flags == NORMAL || flags == JSON)) {
nvme_show_error("Invalid output format");
return err;
}
r = nvme_scan(NULL);
c = nvme_scan_ctrl(r, dev->name);
n = c ? nvme_ctrl_first_ns(c) : nvme_scan_namespace(dev->name);
if (!n) {
nvme_show_error("solidigm-vs-drive-info: drive missing namespace");
return -EINVAL;
}
err = nvme_ns_identify(n, &ns);
if (err) {
nvme_show_error("identify namespace: %s", nvme_strerror(errno));
return err;
}
if (!(ns.nsfeat & 0x10)) {
nvme_show_error("solidigm-vs-drive-info: performance options not available");
return -EINVAL;
}
nvme_id_ns_flbas_to_lbaf_inuse(ns.flbas, &flbaf_inUse);
lba_size = 1 << ns.lbaf[flbaf_inUse].ds;
ftl_unit_size = (le16_to_cpu(ns.npwg) + 1) * lba_size / 1024;
if (flags == JSON) {
struct json_object *root = json_create_object();
json_object_add_value_int(root, FTL_unit_size_str, ftl_unit_size);
json_print_object(root, NULL);
printf("\n");
json_free_object(root);
} else {
printf("%s: %d\n", FTL_unit_size_str, ftl_unit_size);
}
return err;
}
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