[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"
#include "zbd.h"

struct libzbc_data {
	struct zbc_device	*zdev;
	enum zbc_dev_model	model;
	uint64_t		nr_sectors;
	uint32_t		max_open_seq_req;
};

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;
	ld->max_open_seq_req = zinfo->zbd_max_nr_open_seq_req;

	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) || td_trim(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;
	}

	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_BLOCK | 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);
		goto err;
	}

	ret = libzbc_get_dev_info(ld, f);
	if (ret)
		goto err_close;

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

	return 0;

err_close:
	zbc_close(ld->zdev);
err:
	free(ld);
	return ret;
}

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)
		return -EINVAL;

	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;
		/*
		 * ZBC/ZAC do not define zone capacity, so use the zone size as
		 * the zone capacity.
		 */
		zbdz->capacity = zbdz->len;

		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;
			zbdz->wp = zbdz->start;
		}
	}

	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;
}

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

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

	if (ld->max_open_seq_req == ZBC_NO_LIMIT)
		*max_open_zones = 0;
	else
		*max_open_zones = ld->max_open_seq_req;

	return 0;
}

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) {
		ret = zbd_do_io_u_trim(td, io_u);
		if (!ret)
			ret = EINVAL;
	} else {
		log_err("Unsupported operation %u\n", io_u->ddir);
		ret = -EINVAL;
	}
	if (ret < 0)
		io_u->error = -ret;

	return FIO_Q_COMPLETED;
}

FIO_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,
	.get_max_open_zones	= libzbc_get_max_open_zones,
	.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"
84f07387	17	#include "zbd.h"
56a19325 DF	18
	19	struct libzbc_data {
	20	struct zbc_device *zdev;
	21	enum zbc_dev_model model;
	22	uint64_t nr_sectors;
e8267436	23	uint32_t max_open_seq_req;
56a19325 DF	24	};
	25
	26	static int libzbc_get_dev_info(struct libzbc_data ld, struct fio_file f)
	27	{
	28	struct zbc_device_info *zinfo;
	29
	30	zinfo = calloc(1, sizeof(*zinfo));
	31	if (!zinfo)
	32	return -ENOMEM;
	33
	34	zbc_get_device_info(ld->zdev, zinfo);
	35	ld->model = zinfo->zbd_model;
	36	ld->nr_sectors = zinfo->zbd_sectors;
e8267436	37	ld->max_open_seq_req = zinfo->zbd_max_nr_open_seq_req;
56a19325 DF	38
	39	dprint(FD_ZBD, "%s: vendor_id:%s, type: %s, model: %s\n",
	40	f->file_name, zinfo->zbd_vendor_id,
	41	zbc_device_type_str(zinfo->zbd_type),
	42	zbc_device_model_str(zinfo->zbd_model));
	43
	44	free(zinfo);
	45
	46	return 0;
	47	}
	48
	49	static int libzbc_open_dev(struct thread_data td, struct fio_file f,
	50	struct libzbc_data **p_ld)
	51	{
	52	struct libzbc_data *ld = td->io_ops_data;
976fb54e	53	int ret, flags = OS_O_DIRECT;
56a19325 DF	54
	55	if (ld) {
	56	/* Already open */
	57	assert(ld->zdev);
	58	goto out;
	59	}
	60
	61	if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR) {
	62	td_verror(td, EINVAL, "wrong file type");
	63	log_err("ioengine libzbc only works on block or character devices\n");
	64	return -EINVAL;
	65	}
	66
84f07387	67	if (td_write(td) \|\| td_trim(td)) {
56a19325 DF	68	if (!read_only)
	69	flags \|= O_RDWR;
	70	} else if (td_read(td)) {
	71	if (f->filetype == FIO_TYPE_CHAR && !read_only)
	72	flags \|= O_RDWR;
	73	else
	74	flags \|= O_RDONLY;
56a19325 DF	75	}
56a19325 DF	76
976fb54e	77	if (td->o.oatomic) {
56a19325	78	td_verror(td, EINVAL, "libzbc does not support O_ATOMIC");
976fb54e DF	79	log_err("%s: libzbc does not support O_ATOMIC\n", f->file_name);
	80	return -EINVAL;
	81	}
56a19325 DF	82
	83	ld = calloc(1, sizeof(*ld));
	84	if (!ld)
	85	return -ENOMEM;
	86
	87	ret = zbc_open(f->file_name,
ed2eb875 DF	88	flags \| ZBC_O_DRV_BLOCK \| ZBC_O_DRV_SCSI \| ZBC_O_DRV_ATA,
ed2eb875 DF	89	&ld->zdev);
56a19325 DF	90	if (ret) {
	91	log_err("%s: zbc_open() failed, err=%d\n",
	92	f->file_name, ret);
891660e4	93	goto err;
56a19325 DF	94	}
	95
	96	ret = libzbc_get_dev_info(ld, f);
891660e4 DF	97	if (ret)
891660e4 DF	98	goto err_close;
56a19325 DF	99
	100	td->io_ops_data = ld;
	101	out:
	102	if (p_ld)
	103	*p_ld = ld;
	104
	105	return 0;
891660e4 DF	106
	107	err_close:
	108	zbc_close(ld->zdev);
	109	err:
	110	free(ld);
	111	return ret;
56a19325 DF	112	}
	113
	114	static int libzbc_close_dev(struct thread_data *td)
	115	{
	116	struct libzbc_data *ld = td->io_ops_data;
	117	int ret = 0;
	118
	119	td->io_ops_data = NULL;
	120	if (ld) {
	121	if (ld->zdev)
	122	ret = zbc_close(ld->zdev);
	123	free(ld);
	124	}
	125
	126	return ret;
	127	}
	128	static int libzbc_open_file(struct thread_data td, struct fio_file f)
	129	{
	130	return libzbc_open_dev(td, f, NULL);
	131	}
	132
	133	static int libzbc_close_file(struct thread_data td, struct fio_file f)
	134	{
	135	int ret;
	136
	137	ret = libzbc_close_dev(td);
	138	if (ret)
	139	log_err("%s: close device failed err %d\n",
	140	f->file_name, ret);
	141
	142	return ret;
	143	}
	144
	145	static void libzbc_cleanup(struct thread_data *td)
	146	{
	147	libzbc_close_dev(td);
	148	}
	149
	150	static int libzbc_invalidate(struct thread_data td, struct fio_file f)
	151	{
	152	/* Passthrough IO do not cache data. Nothing to do */
	153	return 0;
	154	}
	155
	156	static int libzbc_get_file_size(struct thread_data td, struct fio_file f)
	157	{
	158	struct libzbc_data *ld;
	159	int ret;
	160
	161	if (fio_file_size_known(f))
	162	return 0;
	163
	164	ret = libzbc_open_dev(td, f, &ld);
	165	if (ret)
	166	return ret;
	167
	168	f->real_file_size = ld->nr_sectors << 9;
	169	fio_file_set_size_known(f);
	170
	171	return 0;
	172	}
	173
	174	static int libzbc_get_zoned_model(struct thread_data td, struct fio_file f,
	175	enum zbd_zoned_model *model)
176	{
177	struct libzbc_data *ld;
178	int ret;
179
2c7dd23e NC	180	if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR)
2c7dd23e NC	181	return -EINVAL;
56a19325 DF	182
	183	ret = libzbc_open_dev(td, f, &ld);
	184	if (ret)
	185	return ret;
	186
	187	switch (ld->model) {
	188	case ZBC_DM_HOST_AWARE:
	189	*model = ZBD_HOST_AWARE;
	190	break;
	191	case ZBC_DM_HOST_MANAGED:
	192	*model = ZBD_HOST_MANAGED;
	193	break;
	194	default:
	195	*model = ZBD_NONE;
	196	break;
	197	}
	198
	199	return 0;
	200	}
	201
	202	static int libzbc_report_zones(struct thread_data td, struct fio_file f,
	203	uint64_t offset, struct zbd_zone *zbdz,
	204	unsigned int nr_zones)
	205	{
	206	struct libzbc_data *ld;
	207	uint64_t sector = offset >> 9;
	208	struct zbc_zone *zones;
	209	unsigned int i;
	210	int ret;
	211
	212	ret = libzbc_open_dev(td, f, &ld);
	213	if (ret)
	214	return ret;
	215
	216	if (sector >= ld->nr_sectors)
	217	return 0;
	218
	219	zones = calloc(nr_zones, sizeof(struct zbc_zone));
	220	if (!zones) {
	221	ret = -ENOMEM;
	222	goto out;
	223	}
	224
	225	ret = zbc_report_zones(ld->zdev, sector, ZBC_RO_ALL, zones, &nr_zones);
	226	if (ret < 0) {
	227	log_err("%s: zbc_report_zones failed, err=%d\n",
	228	f->file_name, ret);
	229	goto out;
	230	}
	231
	232	for (i = 0; i < nr_zones; i++, zbdz++) {
	233	zbdz->start = zones[i].zbz_start << 9;
	234	zbdz->len = zones[i].zbz_length << 9;
	235	zbdz->wp = zones[i].zbz_write_pointer << 9;
236d23a8 SK	236	/*
	237	* ZBC/ZAC do not define zone capacity, so use the zone size as
	238	* the zone capacity.
	239	*/
	240	zbdz->capacity = zbdz->len;
56a19325 DF	241
	242	switch (zones[i].zbz_type) {
	243	case ZBC_ZT_CONVENTIONAL:
	244	zbdz->type = ZBD_ZONE_TYPE_CNV;
	245	break;
	246	case ZBC_ZT_SEQUENTIAL_REQ:
	247	zbdz->type = ZBD_ZONE_TYPE_SWR;
	248	break;
	249	case ZBC_ZT_SEQUENTIAL_PREF:
	250	zbdz->type = ZBD_ZONE_TYPE_SWP;
	251	break;
	252	default:
	253	td_verror(td, errno, "invalid zone type");
	254	log_err("%s: invalid type for zone at sector %llu.\n",
	255	f->file_name, (unsigned long long)zbdz->start);
	256	ret = -EIO;
	257	goto out;
	258	}
	259
	260	switch (zones[i].zbz_condition) {
	261	case ZBC_ZC_NOT_WP:
	262	zbdz->cond = ZBD_ZONE_COND_NOT_WP;
	263	break;
	264	case ZBC_ZC_EMPTY:
	265	zbdz->cond = ZBD_ZONE_COND_EMPTY;
	266	break;
	267	case ZBC_ZC_IMP_OPEN:
	268	zbdz->cond = ZBD_ZONE_COND_IMP_OPEN;
	269	break;
	270	case ZBC_ZC_EXP_OPEN:
	271	zbdz->cond = ZBD_ZONE_COND_EXP_OPEN;
	272	break;
	273	case ZBC_ZC_CLOSED:
	274	zbdz->cond = ZBD_ZONE_COND_CLOSED;
	275	break;
	276	case ZBC_ZC_FULL:
	277	zbdz->cond = ZBD_ZONE_COND_FULL;
	278	break;
	279	case ZBC_ZC_RDONLY:
	280	case ZBC_ZC_OFFLINE:
	281	default:
	282	/* Treat all these conditions as offline (don't use!) */
	283	zbdz->cond = ZBD_ZONE_COND_OFFLINE;
59b67452	284	zbdz->wp = zbdz->start;
56a19325 DF	285	}
	286	}
	287
	288	ret = nr_zones;
	289	out:
	290	free(zones);
	291	return ret;
	292	}
	293
	294	static int libzbc_reset_wp(struct thread_data td, struct fio_file f,
	295	uint64_t offset, uint64_t length)
	296	{
	297	struct libzbc_data *ld = td->io_ops_data;
	298	uint64_t sector = offset >> 9;
	299	uint64_t end_sector = (offset + length) >> 9;
	300	unsigned int nr_zones;
	301	struct zbc_errno err;
	302	int i, ret;
	303
	304	assert(ld);
	305	assert(ld->zdev);
	306
	307	nr_zones = (length + td->o.zone_size - 1) / td->o.zone_size;
	308	if (!sector && end_sector >= ld->nr_sectors) {
	309	/* Reset all zones */
	310	ret = zbc_reset_zone(ld->zdev, 0, ZBC_OP_ALL_ZONES);
	311	if (ret)
	312	goto err;
	313
	314	return 0;
	315	}
	316
	317	for (i = 0; i < nr_zones; i++, sector += td->o.zone_size >> 9) {
	318	ret = zbc_reset_zone(ld->zdev, sector, 0);
	319	if (ret)
	320	goto err;
	321	}
	322
	323	return 0;
	324
	325	err:
	326	zbc_errno(ld->zdev, &err);
	327	td_verror(td, errno, "zbc_reset_zone failed");
	328	if (err.sk)
	329	log_err("%s: reset wp failed %s:%s\n",
	330	f->file_name,
	331	zbc_sk_str(err.sk), zbc_asc_ascq_str(err.asc_ascq));
	332	return -ret;
	333	}
	334
e8267436 NC	335	static int libzbc_get_max_open_zones(struct thread_data td, struct fio_file f,
	336	unsigned int *max_open_zones)
	337	{
	338	struct libzbc_data *ld;
	339	int ret;
	340
	341	ret = libzbc_open_dev(td, f, &ld);
	342	if (ret)
	343	return ret;
	344
	345	if (ld->max_open_seq_req == ZBC_NO_LIMIT)
	346	*max_open_zones = 0;
	347	else
	348	*max_open_zones = ld->max_open_seq_req;
	349
	350	return 0;
	351	}
	352
56a19325 DF	353	ssize_t libzbc_rw(struct thread_data td, struct io_u io_u)
	354	{
	355	struct libzbc_data *ld = td->io_ops_data;
	356	struct fio_file *f = io_u->file;
	357	uint64_t sector = io_u->offset >> 9;
	358	size_t count = io_u->xfer_buflen >> 9;
	359	struct zbc_errno err;
	360	ssize_t ret;
	361
	362	if (io_u->ddir == DDIR_WRITE)
	363	ret = zbc_pwrite(ld->zdev, io_u->xfer_buf, count, sector);
	364	else
	365	ret = zbc_pread(ld->zdev, io_u->xfer_buf, count, sector);
	366	if (ret == count)
	367	return ret;
	368
	369	if (ret > 0) {
	370	log_err("Short %s, len=%zu, ret=%zd\n",
	371	io_u->ddir == DDIR_READ ? "read" : "write",
	372	count << 9, ret << 9);
	373	return -EIO;
	374	}
	375
	376	/* I/O error */
	377	zbc_errno(ld->zdev, &err);
	378	td_verror(td, errno, "libzbc i/o failed");
	379	if (err.sk) {
	380	log_err("%s: op %u offset %llu+%llu failed (%s:%s), err %zd\n",
	381	f->file_name, io_u->ddir,
	382	io_u->offset, io_u->xfer_buflen,
	383	zbc_sk_str(err.sk),
	384	zbc_asc_ascq_str(err.asc_ascq), ret);
	385	} else {
	386	log_err("%s: op %u offset %llu+%llu failed, err %zd\n",
	387	f->file_name, io_u->ddir,
	388	io_u->offset, io_u->xfer_buflen, ret);
	389	}
	390
	391	return -EIO;
	392	}
	393
	394	static enum fio_q_status libzbc_queue(struct thread_data td, struct io_u io_u)
	395	{
	396	struct libzbc_data *ld = td->io_ops_data;
	397	struct fio_file *f = io_u->file;
	398	ssize_t ret = 0;
	399
	400	fio_ro_check(td, io_u);
	401
	402	dprint(FD_ZBD, "%p:%s: libzbc queue %llu\n",
	403	td, f->file_name, io_u->offset);
	404
	405	if (io_u->ddir == DDIR_READ \|\| io_u->ddir == DDIR_WRITE) {
	406	ret = libzbc_rw(td, io_u);
	407	} else if (ddir_sync(io_u->ddir)) {
	408	ret = zbc_flush(ld->zdev);
	409	if (ret)
	410	log_err("zbc_flush error %zd\n", ret);
84f07387 SK	411	} else if (io_u->ddir == DDIR_TRIM) {
	412	ret = zbd_do_io_u_trim(td, io_u);
	413	if (!ret)
	414	ret = EINVAL;
	415	} else {
56a19325 DF	416	log_err("Unsupported operation %u\n", io_u->ddir);
	417	ret = -EINVAL;
	418	}
	419	if (ret < 0)
	420	io_u->error = -ret;
	421
	422	return FIO_Q_COMPLETED;
	423	}
	424
5a8a6a03	425	FIO_STATIC struct ioengine_ops ioengine = {
56a19325 DF	426	.name = "libzbc",
	427	.version = FIO_IOOPS_VERSION,
	428	.open_file = libzbc_open_file,
	429	.close_file = libzbc_close_file,
	430	.cleanup = libzbc_cleanup,
	431	.invalidate = libzbc_invalidate,
	432	.get_file_size = libzbc_get_file_size,
	433	.get_zoned_model = libzbc_get_zoned_model,
	434	.report_zones = libzbc_report_zones,
	435	.reset_wp = libzbc_reset_wp,
e8267436	436	.get_max_open_zones = libzbc_get_max_open_zones,
56a19325 DF	437	.queue = libzbc_queue,
	438	.flags = FIO_SYNCIO \| FIO_NOEXTEND \| FIO_RAWIO,
	439	};
	440
	441	static void fio_init fio_libzbc_register(void)
	442	{
	443	register_ioengine(&ioengine);
	444	}
	445
	446	static void fio_exit fio_libzbc_unregister(void)
	447	{
	448	unregister_ioengine(&ioengine);
	449	}