[fio.git] / engines / libzbc.c

/*
 * Copyright (C) 2019 Western Digital Corporation or its affiliates.
 *
 * This file is released under the GPL.
 *
 * libzbc engine
 * IO engine using libzbc library to talk to SMR disks.
 */
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <libzbc/zbc.h>

#include "fio.h"
#include "err.h"
#include "zbd_types.h"

struct libzbc_data {
	struct zbc_device	*zdev;
	enum zbc_dev_model	model;
	uint64_t		nr_sectors;
};

static int libzbc_get_dev_info(struct libzbc_data *ld, struct fio_file *f)
{
	struct zbc_device_info *zinfo;

	zinfo = calloc(1, sizeof(*zinfo));
	if (!zinfo)
		return -ENOMEM;

	zbc_get_device_info(ld->zdev, zinfo);
	ld->model = zinfo->zbd_model;
	ld->nr_sectors = zinfo->zbd_sectors;

	dprint(FD_ZBD, "%s: vendor_id:%s, type: %s, model: %s\n",
	       f->file_name, zinfo->zbd_vendor_id,
	       zbc_device_type_str(zinfo->zbd_type),
	       zbc_device_model_str(zinfo->zbd_model));

	free(zinfo);

	return 0;
}

static int libzbc_open_dev(struct thread_data *td, struct fio_file *f,
			   struct libzbc_data **p_ld)
{
	struct libzbc_data *ld = td->io_ops_data;
        int ret, flags = OS_O_DIRECT;

	if (ld) {
		/* Already open */
		assert(ld->zdev);
		goto out;
	}

	if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR) {
		td_verror(td, EINVAL, "wrong file type");
		log_err("ioengine libzbc only works on block or character devices\n");
		return -EINVAL;
	}

        if (td_write(td)) {
		if (!read_only)
			flags |= O_RDWR;
	} else if (td_read(td)) {
		if (f->filetype == FIO_TYPE_CHAR && !read_only)
			flags |= O_RDWR;
		else
			flags |= O_RDONLY;
	} else if (td_trim(td)) {
		td_verror(td, EINVAL, "libzbc does not support trim");
                log_err("%s: libzbc does not support trim\n",
                        f->file_name);
                return -EINVAL;
	}

        if (td->o.oatomic) {
		td_verror(td, EINVAL, "libzbc does not support O_ATOMIC");
                log_err("%s: libzbc does not support O_ATOMIC\n",
                        f->file_name);
                return -EINVAL;
        }

	ld = calloc(1, sizeof(*ld));
	if (!ld)
		return -ENOMEM;

	ret = zbc_open(f->file_name,
		       flags | ZBC_O_DRV_SCSI | ZBC_O_DRV_ATA, &ld->zdev);
	if (ret) {
		log_err("%s: zbc_open() failed, err=%d\n",
			f->file_name, ret);
		return ret;
	}

	ret = libzbc_get_dev_info(ld, f);
	if (ret) {
		zbc_close(ld->zdev);
		free(ld);
		return ret;
	}

	td->io_ops_data = ld;
out:
	if (p_ld)
		*p_ld = ld;

	return 0;
}

static int libzbc_close_dev(struct thread_data *td)
{
	struct libzbc_data *ld = td->io_ops_data;
	int ret = 0;

	td->io_ops_data = NULL;
	if (ld) {
		if (ld->zdev)
			ret = zbc_close(ld->zdev);
		free(ld);
	}

	return ret;
}
static int libzbc_open_file(struct thread_data *td, struct fio_file *f)
{
	return libzbc_open_dev(td, f, NULL);
}

static int libzbc_close_file(struct thread_data *td, struct fio_file *f)
{
	int ret;

	ret = libzbc_close_dev(td);
	if (ret)
		log_err("%s: close device failed err %d\n",
			f->file_name, ret);

	return ret;
}

static void libzbc_cleanup(struct thread_data *td)
{
	libzbc_close_dev(td);
}

static int libzbc_invalidate(struct thread_data *td, struct fio_file *f)
{
	/* Passthrough IO do not cache data. Nothing to do */
	return 0;
}

static int libzbc_get_file_size(struct thread_data *td, struct fio_file *f)
{
	struct libzbc_data *ld;
	int ret;

	if (fio_file_size_known(f))
		return 0;

	ret = libzbc_open_dev(td, f, &ld);
	if (ret)
		return ret;

	f->real_file_size = ld->nr_sectors << 9;
	fio_file_set_size_known(f);

	return 0;
}

static int libzbc_get_zoned_model(struct thread_data *td, struct fio_file *f,
				  enum zbd_zoned_model *model)
{
	struct libzbc_data *ld;
	int ret;

	if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR) {
		*model = ZBD_IGNORE;
		return 0;
	}

	ret = libzbc_open_dev(td, f, &ld);
	if (ret)
		return ret;

	switch (ld->model) {
	case ZBC_DM_HOST_AWARE:
		*model = ZBD_HOST_AWARE;
		break;
	case ZBC_DM_HOST_MANAGED:
		*model = ZBD_HOST_MANAGED;
		break;
	default:
		*model = ZBD_NONE;
		break;
	}

	return 0;
}

static int libzbc_report_zones(struct thread_data *td, struct fio_file *f,
			       uint64_t offset, struct zbd_zone *zbdz,
			       unsigned int nr_zones)
{
	struct libzbc_data *ld;
	uint64_t sector = offset >> 9;
	struct zbc_zone *zones;
	unsigned int i;
	int ret;

	ret = libzbc_open_dev(td, f, &ld);
	if (ret)
		return ret;

	if (sector >= ld->nr_sectors)
		return 0;

	zones = calloc(nr_zones, sizeof(struct zbc_zone));
	if (!zones) {
		ret = -ENOMEM;
		goto out;
	}

	ret = zbc_report_zones(ld->zdev, sector, ZBC_RO_ALL, zones, &nr_zones);
	if (ret < 0) {
		log_err("%s: zbc_report_zones failed, err=%d\n",
			f->file_name, ret);
		goto out;
	}

	for (i = 0; i < nr_zones; i++, zbdz++) {
		zbdz->start = zones[i].zbz_start << 9;
		zbdz->len = zones[i].zbz_length << 9;
		zbdz->wp = zones[i].zbz_write_pointer << 9;

		switch (zones[i].zbz_type) {
		case ZBC_ZT_CONVENTIONAL:
			zbdz->type = ZBD_ZONE_TYPE_CNV;
			break;
		case ZBC_ZT_SEQUENTIAL_REQ:
			zbdz->type = ZBD_ZONE_TYPE_SWR;
			break;
		case ZBC_ZT_SEQUENTIAL_PREF:
			zbdz->type = ZBD_ZONE_TYPE_SWP;
			break;
		default:
			td_verror(td, errno, "invalid zone type");
			log_err("%s: invalid type for zone at sector %llu.\n",
				f->file_name, (unsigned long long)zbdz->start);
			ret = -EIO;
			goto out;
		}

		switch (zones[i].zbz_condition) {
		case ZBC_ZC_NOT_WP:
			zbdz->cond = ZBD_ZONE_COND_NOT_WP;
			break;
		case ZBC_ZC_EMPTY:
			zbdz->cond = ZBD_ZONE_COND_EMPTY;
			break;
		case ZBC_ZC_IMP_OPEN:
			zbdz->cond = ZBD_ZONE_COND_IMP_OPEN;
			break;
		case ZBC_ZC_EXP_OPEN:
			zbdz->cond = ZBD_ZONE_COND_EXP_OPEN;
			break;
		case ZBC_ZC_CLOSED:
			zbdz->cond = ZBD_ZONE_COND_CLOSED;
			break;
		case ZBC_ZC_FULL:
			zbdz->cond = ZBD_ZONE_COND_FULL;
			break;
		case ZBC_ZC_RDONLY:
		case ZBC_ZC_OFFLINE:
		default:
			/* Treat all these conditions as offline (don't use!) */
			zbdz->cond = ZBD_ZONE_COND_OFFLINE;
			break;
		}
	}

	ret = nr_zones;
out:
	free(zones);
	return ret;
}

static int libzbc_reset_wp(struct thread_data *td, struct fio_file *f,
			   uint64_t offset, uint64_t length)
{
	struct libzbc_data *ld = td->io_ops_data;
	uint64_t sector = offset >> 9;
	uint64_t end_sector = (offset + length) >> 9;
	unsigned int nr_zones;
	struct zbc_errno err;
	int i, ret;

	assert(ld);
	assert(ld->zdev);

	nr_zones = (length + td->o.zone_size - 1) / td->o.zone_size;
	if (!sector && end_sector >= ld->nr_sectors) {
		/* Reset all zones */
		ret = zbc_reset_zone(ld->zdev, 0, ZBC_OP_ALL_ZONES);
		if (ret)
			goto err;

		return 0;
	}

	for (i = 0; i < nr_zones; i++, sector += td->o.zone_size >> 9) {
		ret = zbc_reset_zone(ld->zdev, sector, 0);
		if (ret)
			goto err;
	}

	return 0;

err:
	zbc_errno(ld->zdev, &err);
	td_verror(td, errno, "zbc_reset_zone failed");
	if (err.sk)
		log_err("%s: reset wp failed %s:%s\n",
			f->file_name,
			zbc_sk_str(err.sk), zbc_asc_ascq_str(err.asc_ascq));
	return -ret;
}

ssize_t libzbc_rw(struct thread_data *td, struct io_u *io_u)
{
	struct libzbc_data *ld = td->io_ops_data;
	struct fio_file *f = io_u->file;
	uint64_t sector = io_u->offset >> 9;
	size_t count = io_u->xfer_buflen >> 9;
	struct zbc_errno err;
	ssize_t ret;

	if (io_u->ddir == DDIR_WRITE)
		ret = zbc_pwrite(ld->zdev, io_u->xfer_buf, count, sector);
	else
		ret = zbc_pread(ld->zdev, io_u->xfer_buf, count, sector);
	if (ret == count)
		return ret;

	if (ret > 0) {
		log_err("Short %s, len=%zu, ret=%zd\n",
			io_u->ddir == DDIR_READ ? "read" : "write",
			count << 9, ret << 9);
		return -EIO;
	}

	/* I/O error */
	zbc_errno(ld->zdev, &err);
	td_verror(td, errno, "libzbc i/o failed");
	if (err.sk) {
		log_err("%s: op %u offset %llu+%llu failed (%s:%s), err %zd\n",
			f->file_name, io_u->ddir,
			io_u->offset, io_u->xfer_buflen,
			zbc_sk_str(err.sk),
			zbc_asc_ascq_str(err.asc_ascq), ret);
	} else {
		log_err("%s: op %u offset %llu+%llu failed, err %zd\n",
			f->file_name, io_u->ddir,
			io_u->offset, io_u->xfer_buflen, ret);
	}

	return -EIO;
}

static enum fio_q_status libzbc_queue(struct thread_data *td, struct io_u *io_u)
{
	struct libzbc_data *ld = td->io_ops_data;
	struct fio_file *f = io_u->file;
	ssize_t ret = 0;

	fio_ro_check(td, io_u);

	dprint(FD_ZBD, "%p:%s: libzbc queue %llu\n",
	       td, f->file_name, io_u->offset);

	if (io_u->ddir == DDIR_READ || io_u->ddir == DDIR_WRITE) {
		ret = libzbc_rw(td, io_u);
	} else if (ddir_sync(io_u->ddir)) {
		ret = zbc_flush(ld->zdev);
		if (ret)
			log_err("zbc_flush error %zd\n", ret);
	} else if (io_u->ddir != DDIR_TRIM) {
		log_err("Unsupported operation %u\n", io_u->ddir);
		ret = -EINVAL;
	}
	if (ret < 0)
		io_u->error = -ret;

	return FIO_Q_COMPLETED;
}

static struct ioengine_ops ioengine = {
	.name			= "libzbc",
	.version		= FIO_IOOPS_VERSION,
	.open_file		= libzbc_open_file,
	.close_file		= libzbc_close_file,
	.cleanup		= libzbc_cleanup,
	.invalidate		= libzbc_invalidate,
	.get_file_size		= libzbc_get_file_size,
	.get_zoned_model	= libzbc_get_zoned_model,
	.report_zones		= libzbc_report_zones,
	.reset_wp		= libzbc_reset_wp,
	.queue			= libzbc_queue,
	.flags			= FIO_SYNCIO | FIO_NOEXTEND | FIO_RAWIO,
};

static void fio_init fio_libzbc_register(void)
{
	register_ioengine(&ioengine);
}

static void fio_exit fio_libzbc_unregister(void)
{
	unregister_ioengine(&ioengine);
}
Commit	Line	Data
56a19325 DF	1	/*
	2	* Copyright (C) 2019 Western Digital Corporation or its affiliates.
	3	*
	4	* This file is released under the GPL.
	5	*
	6	* libzbc engine
	7	* IO engine using libzbc library to talk to SMR disks.
	8	*/
	9	#include <stdlib.h>
	10	#include <unistd.h>
	11	#include <errno.h>
	12	#include <libzbc/zbc.h>
	13
	14	#include "fio.h"
	15	#include "err.h"
	16	#include "zbd_types.h"
	17
	18	struct libzbc_data {
	19	struct zbc_device *zdev;
	20	enum zbc_dev_model model;
	21	uint64_t nr_sectors;
	22	};
	23
	24	static int libzbc_get_dev_info(struct libzbc_data ld, struct fio_file f)
	25	{
	26	struct zbc_device_info *zinfo;
	27
	28	zinfo = calloc(1, sizeof(*zinfo));
	29	if (!zinfo)
	30	return -ENOMEM;
	31
	32	zbc_get_device_info(ld->zdev, zinfo);
	33	ld->model = zinfo->zbd_model;
	34	ld->nr_sectors = zinfo->zbd_sectors;
	35
	36	dprint(FD_ZBD, "%s: vendor_id:%s, type: %s, model: %s\n",
	37	f->file_name, zinfo->zbd_vendor_id,
	38	zbc_device_type_str(zinfo->zbd_type),
	39	zbc_device_model_str(zinfo->zbd_model));
	40
	41	free(zinfo);
	42
	43	return 0;
	44	}
	45
	46	static int libzbc_open_dev(struct thread_data td, struct fio_file f,
	47	struct libzbc_data **p_ld)
	48	{
	49	struct libzbc_data *ld = td->io_ops_data;
	50	int ret, flags = OS_O_DIRECT;
	51
	52	if (ld) {
	53	/* Already open */
	54	assert(ld->zdev);
	55	goto out;
	56	}
	57
	58	if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR) {
	59	td_verror(td, EINVAL, "wrong file type");
	60	log_err("ioengine libzbc only works on block or character devices\n");
	61	return -EINVAL;
	62	}
	63
	64	if (td_write(td)) {
65	if (!read_only)
66	flags \|= O_RDWR;
67	} else if (td_read(td)) {
68	if (f->filetype == FIO_TYPE_CHAR && !read_only)
69	flags \|= O_RDWR;
70	else
71	flags \|= O_RDONLY;
72	} else if (td_trim(td)) {
73	td_verror(td, EINVAL, "libzbc does not support trim");
74	log_err("%s: libzbc does not support trim\n",
75	f->file_name);
76	return -EINVAL;
77	}
78
79	if (td->o.oatomic) {
80	td_verror(td, EINVAL, "libzbc does not support O_ATOMIC");
81	log_err("%s: libzbc does not support O_ATOMIC\n",
82	f->file_name);
83	return -EINVAL;
84	}
85
86	ld = calloc(1, sizeof(*ld));
87	if (!ld)
88	return -ENOMEM;
89
90	ret = zbc_open(f->file_name,
91	flags \| ZBC_O_DRV_SCSI \| ZBC_O_DRV_ATA, &ld->zdev);
92	if (ret) {
93	log_err("%s: zbc_open() failed, err=%d\n",
94	f->file_name, ret);
95	return ret;
96	}
97
98	ret = libzbc_get_dev_info(ld, f);
99	if (ret) {
100	zbc_close(ld->zdev);
101	free(ld);
102	return ret;
103	}
104
105	td->io_ops_data = ld;
106	out:
107	if (p_ld)
108	*p_ld = ld;
109
110	return 0;
111	}
112
113	static int libzbc_close_dev(struct thread_data *td)
114	{
115	struct libzbc_data *ld = td->io_ops_data;
116	int ret = 0;
117
118	td->io_ops_data = NULL;
119	if (ld) {
120	if (ld->zdev)
121	ret = zbc_close(ld->zdev);
122	free(ld);
123	}
124
125	return ret;
126	}
127	static int libzbc_open_file(struct thread_data td, struct fio_file f)
128	{
129	return libzbc_open_dev(td, f, NULL);
130	}
131
132	static int libzbc_close_file(struct thread_data td, struct fio_file f)
133	{
134	int ret;
135
136	ret = libzbc_close_dev(td);
137	if (ret)
138	log_err("%s: close device failed err %d\n",
139	f->file_name, ret);
140
141	return ret;
142	}
143
144	static void libzbc_cleanup(struct thread_data *td)
145	{
146	libzbc_close_dev(td);
147	}
148
149	static int libzbc_invalidate(struct thread_data td, struct fio_file f)
150	{
151	/* Passthrough IO do not cache data. Nothing to do */
152	return 0;
153	}
154
155	static int libzbc_get_file_size(struct thread_data td, struct fio_file f)
156	{
157	struct libzbc_data *ld;
158	int ret;
159
160	if (fio_file_size_known(f))
161	return 0;
162
163	ret = libzbc_open_dev(td, f, &ld);
164	if (ret)
165	return ret;
166
167	f->real_file_size = ld->nr_sectors << 9;
168	fio_file_set_size_known(f);
169
170	return 0;
171	}
172
173	static int libzbc_get_zoned_model(struct thread_data td, struct fio_file f,
174	enum zbd_zoned_model *model)
175	{
176	struct libzbc_data *ld;
177	int ret;
178
179	if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR) {
180	*model = ZBD_IGNORE;
181	return 0;
182	}
183
184	ret = libzbc_open_dev(td, f, &ld);
185	if (ret)
186	return ret;
187
188	switch (ld->model) {
189	case ZBC_DM_HOST_AWARE:
190	*model = ZBD_HOST_AWARE;
191	break;
192	case ZBC_DM_HOST_MANAGED:
193	*model = ZBD_HOST_MANAGED;
194	break;
195	default:
196	*model = ZBD_NONE;
197	break;
198	}
199
200	return 0;
201	}
202
203	static int libzbc_report_zones(struct thread_data td, struct fio_file f,
204	uint64_t offset, struct zbd_zone *zbdz,
205	unsigned int nr_zones)
206	{
207	struct libzbc_data *ld;
208	uint64_t sector = offset >> 9;
209	struct zbc_zone *zones;
210	unsigned int i;
211	int ret;
212
213	ret = libzbc_open_dev(td, f, &ld);
214	if (ret)
215	return ret;
216
217	if (sector >= ld->nr_sectors)
218	return 0;
219
220	zones = calloc(nr_zones, sizeof(struct zbc_zone));
221	if (!zones) {
222	ret = -ENOMEM;
223	goto out;
224	}
225
226	ret = zbc_report_zones(ld->zdev, sector, ZBC_RO_ALL, zones, &nr_zones);
227	if (ret < 0) {
228	log_err("%s: zbc_report_zones failed, err=%d\n",
229	f->file_name, ret);
230	goto out;
231	}
232
233	for (i = 0; i < nr_zones; i++, zbdz++) {
234	zbdz->start = zones[i].zbz_start << 9;
235	zbdz->len = zones[i].zbz_length << 9;
236	zbdz->wp = zones[i].zbz_write_pointer << 9;
237
238	switch (zones[i].zbz_type) {
239	case ZBC_ZT_CONVENTIONAL:
240	zbdz->type = ZBD_ZONE_TYPE_CNV;
241	break;
242	case ZBC_ZT_SEQUENTIAL_REQ:
243	zbdz->type = ZBD_ZONE_TYPE_SWR;
244	break;
245	case ZBC_ZT_SEQUENTIAL_PREF:
246	zbdz->type = ZBD_ZONE_TYPE_SWP;
247	break;
248	default:
249	td_verror(td, errno, "invalid zone type");
250	log_err("%s: invalid type for zone at sector %llu.\n",
251	f->file_name, (unsigned long long)zbdz->start);
252	ret = -EIO;
253	goto out;
254	}
255
256	switch (zones[i].zbz_condition) {
257	case ZBC_ZC_NOT_WP:
258	zbdz->cond = ZBD_ZONE_COND_NOT_WP;
259	break;
260	case ZBC_ZC_EMPTY:
261	zbdz->cond = ZBD_ZONE_COND_EMPTY;
262	break;
263	case ZBC_ZC_IMP_OPEN:
264	zbdz->cond = ZBD_ZONE_COND_IMP_OPEN;
265	break;
266	case ZBC_ZC_EXP_OPEN:
267	zbdz->cond = ZBD_ZONE_COND_EXP_OPEN;
268	break;
269	case ZBC_ZC_CLOSED:
270	zbdz->cond = ZBD_ZONE_COND_CLOSED;
271	break;
272	case ZBC_ZC_FULL:
273	zbdz->cond = ZBD_ZONE_COND_FULL;
274	break;
275	case ZBC_ZC_RDONLY:
276	case ZBC_ZC_OFFLINE:
277	default:
278	/* Treat all these conditions as offline (don't use!) */
279	zbdz->cond = ZBD_ZONE_COND_OFFLINE;
280	break;
281	}
282	}
283
284	ret = nr_zones;
285	out:
286	free(zones);
287	return ret;
288	}
289
290	static int libzbc_reset_wp(struct thread_data td, struct fio_file f,
291	uint64_t offset, uint64_t length)
292	{
293	struct libzbc_data *ld = td->io_ops_data;
294	uint64_t sector = offset >> 9;
295	uint64_t end_sector = (offset + length) >> 9;
296	unsigned int nr_zones;
297	struct zbc_errno err;
298	int i, ret;
299
300	assert(ld);
301	assert(ld->zdev);
302
303	nr_zones = (length + td->o.zone_size - 1) / td->o.zone_size;
304	if (!sector && end_sector >= ld->nr_sectors) {
305	/* Reset all zones */
306	ret = zbc_reset_zone(ld->zdev, 0, ZBC_OP_ALL_ZONES);
307	if (ret)
308	goto err;
309
310	return 0;
311	}
312
313	for (i = 0; i < nr_zones; i++, sector += td->o.zone_size >> 9) {
314	ret = zbc_reset_zone(ld->zdev, sector, 0);
315	if (ret)
316	goto err;
317	}
318
319	return 0;
320
321	err:
322	zbc_errno(ld->zdev, &err);
323	td_verror(td, errno, "zbc_reset_zone failed");
324	if (err.sk)
325	log_err("%s: reset wp failed %s:%s\n",
326	f->file_name,
327	zbc_sk_str(err.sk), zbc_asc_ascq_str(err.asc_ascq));
328	return -ret;
329	}
330
331	ssize_t libzbc_rw(struct thread_data td, struct io_u io_u)
332	{
333	struct libzbc_data *ld = td->io_ops_data;
334	struct fio_file *f = io_u->file;
335	uint64_t sector = io_u->offset >> 9;
336	size_t count = io_u->xfer_buflen >> 9;
337	struct zbc_errno err;
338	ssize_t ret;
339
340	if (io_u->ddir == DDIR_WRITE)
341	ret = zbc_pwrite(ld->zdev, io_u->xfer_buf, count, sector);
342	else
343	ret = zbc_pread(ld->zdev, io_u->xfer_buf, count, sector);
344	if (ret == count)
345	return ret;
346
347	if (ret > 0) {
348	log_err("Short %s, len=%zu, ret=%zd\n",
349	io_u->ddir == DDIR_READ ? "read" : "write",
350	count << 9, ret << 9);
351	return -EIO;
352	}
353
354	/* I/O error */
355	zbc_errno(ld->zdev, &err);
356	td_verror(td, errno, "libzbc i/o failed");
357	if (err.sk) {
358	log_err("%s: op %u offset %llu+%llu failed (%s:%s), err %zd\n",
359	f->file_name, io_u->ddir,
360	io_u->offset, io_u->xfer_buflen,
361	zbc_sk_str(err.sk),
362	zbc_asc_ascq_str(err.asc_ascq), ret);
363	} else {
364	log_err("%s: op %u offset %llu+%llu failed, err %zd\n",
365	f->file_name, io_u->ddir,
366	io_u->offset, io_u->xfer_buflen, ret);
367	}
368
369	return -EIO;
370	}
371
372	static enum fio_q_status libzbc_queue(struct thread_data td, struct io_u io_u)
373	{
374	struct libzbc_data *ld = td->io_ops_data;
375	struct fio_file *f = io_u->file;
376	ssize_t ret = 0;
377
378	fio_ro_check(td, io_u);
379
380	dprint(FD_ZBD, "%p:%s: libzbc queue %llu\n",
381	td, f->file_name, io_u->offset);
382
383	if (io_u->ddir == DDIR_READ \|\| io_u->ddir == DDIR_WRITE) {
384	ret = libzbc_rw(td, io_u);
385	} else if (ddir_sync(io_u->ddir)) {
386	ret = zbc_flush(ld->zdev);
387	if (ret)
388	log_err("zbc_flush error %zd\n", ret);
389	} else if (io_u->ddir != DDIR_TRIM) {
390	log_err("Unsupported operation %u\n", io_u->ddir);
391	ret = -EINVAL;
392	}
393	if (ret < 0)
394	io_u->error = -ret;
395
396	return FIO_Q_COMPLETED;
397	}
398
399	static struct ioengine_ops ioengine = {
400	.name = "libzbc",
401	.version = FIO_IOOPS_VERSION,
402	.open_file = libzbc_open_file,
403	.close_file = libzbc_close_file,
404	.cleanup = libzbc_cleanup,
405	.invalidate = libzbc_invalidate,
406	.get_file_size = libzbc_get_file_size,
407	.get_zoned_model = libzbc_get_zoned_model,
408	.report_zones = libzbc_report_zones,
409	.reset_wp = libzbc_reset_wp,
410	.queue = libzbc_queue,
411	.flags = FIO_SYNCIO \| FIO_NOEXTEND \| FIO_RAWIO,
412	};
413
414	static void fio_init fio_libzbc_register(void)
415	{
416	register_ioengine(&ioengine);
417	}
418
419	static void fio_exit fio_libzbc_unregister(void)
420	{
421	unregister_ioengine(&ioengine);
422	}