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