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