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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2022 Solidigm.
*
* Author: leonardo.da.cunha@solidigm.com
*/
#include <unistd.h>
#include "ocp-utils.h"
#include "nvme-print.h"
const unsigned char ocp_uuid[NVME_UUID_LEN] = {
0xc1, 0x94, 0xd5, 0x5b, 0xe0, 0x94, 0x47, 0x94, 0xa2, 0x1d,
0x29, 0x99, 0x8f, 0x56, 0xbe, 0x6f };
int ocp_get_uuid_index(struct nvme_dev *dev, int *index)
{
struct nvme_id_uuid_list uuid_list;
int err = nvme_identify_uuid(dev_fd(dev), &uuid_list);
*index = 0;
if (err)
return err;
for (int i = 0; i < NVME_ID_UUID_LIST_MAX; i++) {
if (memcmp(ocp_uuid, &uuid_list.entry[i].uuid, NVME_UUID_LEN) == 0) {
*index = i + 1;
break;
}
}
return err;
}
int ocp_clear_feature(int argc, char **argv, const char *desc, const __u8 fid)
{
__u32 result = 0;
__u32 clear = 1 << 31;
struct nvme_dev *dev;
int uuid_index = 0;
bool uuid = true;
int err;
OPT_ARGS(opts) = {
OPT_FLAG("no-uuid", 'n', NULL,
"Skip UUID index search (UUID index not required for OCP 1.0)"),
OPT_END()
};
err = parse_and_open(&dev, argc, argv, desc, opts);
if (err)
return err;
if (opts[0].seen)
uuid = false;
if (uuid) {
/* OCP 2.0 requires UUID index support */
err = ocp_get_uuid_index(dev, &uuid_index);
if (err || !uuid_index) {
fprintf(stderr, "ERROR: No OCP UUID index found\n");
goto close_dev;
}
}
struct nvme_set_features_args args = {
.result = &result,
.data = NULL,
.args_size = sizeof(args),
.fd = dev_fd(dev),
.timeout = NVME_DEFAULT_IOCTL_TIMEOUT,
.nsid = 0,
.cdw11 = clear,
.cdw12 = 0,
.cdw13 = 0,
.cdw15 = 0,
.data_len = 0,
.save = 0,
.uuidx = uuid_index,
.fid = fid,
};
err = nvme_set_features(&args);
if (err == 0)
printf("Success : %s\n", desc);
else if (err > 0)
nvme_show_status(err);
else
printf("Fail : %s\n", desc);
close_dev:
/* Redundant close() to make static code analysis happy */
close(dev->direct.fd);
dev_close(dev);
return err;
}
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