Commit 7c9d3ea5 authored by Artur Paszkiewicz's avatar Artur Paszkiewicz Committed by Ben Walker
Browse files

FTL: Add helper functions for IO to band regions 



Signed-off-by: default avatarKozlowski Mateusz <mateusz.kozlowski@intel.com>
Signed-off-by: default avatarArtur Paszkiewicz <artur.paszkiewicz@intel.com>
Change-Id: I17443ba83afd0ccee0cb84e02329b150562cfd63
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13331


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
parent e36f0d36

lib/ftl/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -22,7 +22,7 @@ CFLAGS += -I. 
FTL_SUBDIRS := mngt utils



C_SRCS = ftl_core.c ftl_init.c ftl_layout.c ftl_debug.c ftl_io.c ftl_sb.c ftl_l2p.c ftl_l2p_flat.c

C_SRCS += ftl_nv_cache.c ftl_band.c

C_SRCS += ftl_nv_cache.c ftl_band.c ftl_band_ops.c

C_SRCS += mngt/ftl_mngt.c mngt/ftl_mngt_bdev.c mngt/ftl_mngt_shutdown.c mngt/ftl_mngt_startup.c

C_SRCS += mngt/ftl_mngt_md.c mngt/ftl_mngt_misc.c mngt/ftl_mngt_ioch.c mngt/ftl_mngt_l2p.c

C_SRCS += mngt/ftl_mngt_band.c

lib/ftl/ftl_band.h

+5 −0
Original line number Diff line number Diff line
@@ -145,6 +145,11 @@ int ftl_band_filled(struct ftl_band *band, size_t offset); 
int ftl_band_write_prep(struct ftl_band *band);

size_t ftl_p2l_map_pool_elem_size(struct spdk_ftl_dev *dev);

ftl_addr ftl_band_p2l_map_addr(struct ftl_band *band);

void ftl_band_rq_write(struct ftl_band *band, struct ftl_rq *rq);

void ftl_band_rq_read(struct ftl_band *band, struct ftl_rq *rq);

void ftl_band_basic_rq_write(struct ftl_band *band, struct ftl_basic_rq *brq);

void ftl_band_basic_rq_read(struct ftl_band *band, struct ftl_basic_rq *brq);

void ftl_band_read_tail_brq_md(struct ftl_band *band, ftl_band_md_cb cb, void *cntx);



static inline void

ftl_band_set_owner(struct ftl_band *band,

lib/ftl/ftl_band_ops.c

0 → 100644
+297 −0
Original line number Diff line number Diff line 
/*   SPDX-License-Identifier: BSD-3-Clause

 *   Copyright (c) Intel Corporation.

 *   All rights reserved.

 */



#include "spdk/stdinc.h"

#include "spdk/queue.h"

#include "spdk/bdev_module.h"



#include "ftl_core.h"

#include "ftl_band.h"

#include "ftl_internal.h"



static void

write_rq_end(struct spdk_bdev_io *bdev_io, bool success, void *arg)

{

	struct ftl_rq *rq = arg;

	struct ftl_band *band = rq->io.band;



	rq->success = success;



	assert(band->queue_depth > 0);

	band->queue_depth--;



	rq->owner.cb(rq);

	spdk_bdev_free_io(bdev_io);

}



static void

ftl_band_rq_bdev_write(void *_rq)

{

	struct ftl_rq *rq = _rq;

	struct ftl_band *band = rq->io.band;

	struct spdk_ftl_dev *dev = band->dev;

	int rc;



	rc = spdk_bdev_writev_blocks(dev->base_bdev_desc, dev->base_ioch,

				     rq->io_vec, rq->io_vec_size,

				     rq->io.addr, rq->num_blocks,

				     write_rq_end, rq);



	if (spdk_unlikely(rc)) {

		if (rc == -ENOMEM) {

			struct spdk_bdev *bdev = spdk_bdev_desc_get_bdev(dev->base_bdev_desc);

			rq->io.bdev_io_wait.bdev = bdev;

			rq->io.bdev_io_wait.cb_fn = ftl_band_rq_bdev_write;

			rq->io.bdev_io_wait.cb_arg = rq;

			spdk_bdev_queue_io_wait(bdev, dev->base_ioch, &rq->io.bdev_io_wait);

		} else {

			ftl_abort();

		}

	}

}



void

ftl_band_rq_write(struct ftl_band *band, struct ftl_rq *rq)

{

	struct spdk_ftl_dev *dev = band->dev;



	rq->success = false;

	rq->io.band = band;

	rq->io.addr = band->md->iter.addr;



	ftl_band_rq_bdev_write(rq);



	band->queue_depth++;

	dev->io_activity_total += rq->num_blocks;



	ftl_band_iter_advance(band, rq->num_blocks);

	if (ftl_band_filled(band, band->md->iter.offset)) {

		ftl_band_set_state(band, FTL_BAND_STATE_FULL);

		band->owner.state_change_fn(band);

	}

}



static void ftl_band_rq_bdev_read(void *_entry);



static void

read_rq_end(struct spdk_bdev_io *bdev_io, bool success, void *arg)

{

	struct ftl_rq_entry *entry = arg;

	struct ftl_band *band = entry->io.band;

	struct ftl_rq *rq = ftl_rq_from_entry(entry);



	rq->success = success;

	if (spdk_unlikely(!success)) {

		ftl_band_rq_bdev_read(entry);

		spdk_bdev_free_io(bdev_io);

		return;

	}



	assert(band->queue_depth > 0);

	band->queue_depth--;



	rq->owner.cb(rq);

	spdk_bdev_free_io(bdev_io);

}



static void

ftl_band_rq_bdev_read(void *_entry)

{

	struct ftl_rq_entry *entry = _entry;

	struct ftl_rq *rq = ftl_rq_from_entry(entry);

	struct spdk_ftl_dev *dev = rq->dev;

	int rc;



	rc = spdk_bdev_read_blocks(dev->base_bdev_desc, dev->base_ioch, entry->io_payload,

				   entry->bdev_io.offset_blocks, entry->bdev_io.num_blocks,

				   read_rq_end, entry);

	if (spdk_unlikely(rc)) {

		if (rc == -ENOMEM) {

			struct spdk_bdev *bdev = spdk_bdev_desc_get_bdev(dev->base_bdev_desc);

			entry->bdev_io.wait_entry.bdev = bdev;

			entry->bdev_io.wait_entry.cb_fn = ftl_band_rq_bdev_read;

			entry->bdev_io.wait_entry.cb_arg = entry;

			spdk_bdev_queue_io_wait(bdev, dev->base_ioch, &entry->bdev_io.wait_entry);

		} else {

			ftl_abort();

		}

	}

}



void

ftl_band_rq_read(struct ftl_band *band, struct ftl_rq *rq)

{

	struct spdk_ftl_dev *dev = band->dev;

	struct ftl_rq_entry *entry = &rq->entries[rq->iter.idx];



	assert(rq->iter.idx + rq->iter.count <= rq->num_blocks);



	rq->success = false;

	rq->io.band = band;

	rq->io.addr = band->md->iter.addr;

	entry->io.band = band;

	entry->bdev_io.offset_blocks = rq->io.addr;

	entry->bdev_io.num_blocks = rq->iter.count;



	ftl_band_rq_bdev_read(entry);



	dev->io_activity_total += rq->num_blocks;

	band->queue_depth++;

}



static void

write_brq_end(struct spdk_bdev_io *bdev_io, bool success, void *arg)

{

	struct ftl_basic_rq *brq = arg;

	struct ftl_band *band = brq->io.band;



	brq->success = success;



	assert(band->queue_depth > 0);

	band->queue_depth--;



	brq->owner.cb(brq);

	spdk_bdev_free_io(bdev_io);

}



static void

ftl_band_brq_bdev_write(void *_brq)

{

	struct ftl_basic_rq *brq = _brq;

	struct spdk_ftl_dev *dev = brq->dev;

	int rc;



	rc = spdk_bdev_write_blocks(dev->base_bdev_desc, dev->base_ioch,

				    brq->io_payload, brq->io.addr,

				    brq->num_blocks, write_brq_end, brq);



	if (spdk_unlikely(rc)) {

		if (rc == -ENOMEM) {

			struct spdk_bdev *bdev = spdk_bdev_desc_get_bdev(dev->base_bdev_desc);

			brq->io.bdev_io_wait.bdev = bdev;

			brq->io.bdev_io_wait.cb_fn = ftl_band_brq_bdev_write;

			brq->io.bdev_io_wait.cb_arg = brq;

			spdk_bdev_queue_io_wait(bdev, dev->base_ioch, &brq->io.bdev_io_wait);

		} else {

			ftl_abort();

		}

	}

}



void

ftl_band_basic_rq_write(struct ftl_band *band, struct ftl_basic_rq *brq)

{

	struct spdk_ftl_dev *dev = band->dev;



	brq->io.addr = band->md->iter.addr;

	brq->io.band = band;

	brq->success = false;



	ftl_band_brq_bdev_write(brq);



	dev->io_activity_total += brq->num_blocks;

	band->queue_depth++;

	ftl_band_iter_advance(band, brq->num_blocks);

	if (ftl_band_filled(band, band->md->iter.offset)) {

		ftl_band_set_state(band, FTL_BAND_STATE_FULL);

		band->owner.state_change_fn(band);

	}

}



static void

read_brq_end(struct spdk_bdev_io *bdev_io, bool success, void *arg)

{

	struct ftl_basic_rq *brq = arg;

	struct ftl_band *band = brq->io.band;



	brq->success = success;



	assert(band->queue_depth > 0);

	band->queue_depth--;



	brq->owner.cb(brq);

	spdk_bdev_free_io(bdev_io);

}



static void

ftl_band_brq_bdev_read(void *_brq)

{

	struct ftl_basic_rq *brq = _brq;

	struct spdk_ftl_dev *dev = brq->dev;

	int rc;



	rc = spdk_bdev_read_blocks(dev->base_bdev_desc, dev->base_ioch,

				   brq->io_payload, brq->io.addr,

				   brq->num_blocks, read_brq_end, brq);

	if (spdk_unlikely(rc)) {

		if (rc == -ENOMEM) {

			struct spdk_bdev *bdev = spdk_bdev_desc_get_bdev(dev->base_bdev_desc);

			brq->io.bdev_io_wait.bdev = bdev;

			brq->io.bdev_io_wait.cb_fn = ftl_band_brq_bdev_read;

			brq->io.bdev_io_wait.cb_arg = brq;

			spdk_bdev_queue_io_wait(bdev, dev->base_ioch, &brq->io.bdev_io_wait);

		} else {

			ftl_abort();

		}

	}

}



void

ftl_band_basic_rq_read(struct ftl_band *band, struct ftl_basic_rq *brq)

{

	struct spdk_ftl_dev *dev = brq->dev;



	brq->io.band = band;



	ftl_band_brq_bdev_read(brq);



	brq->io.band->queue_depth++;

	dev->io_activity_total += brq->num_blocks;

}



static void

read_tail_md_cb(struct ftl_basic_rq *brq)

{

	struct ftl_band *band = brq->owner.priv;

	enum ftl_md_status status = FTL_MD_IO_FAILURE;

	ftl_band_md_cb cb;

	void *priv;



	if (spdk_unlikely(!brq->success)) {

		/* Retries the read in case of error */

		ftl_band_basic_rq_read(band, &band->metadata_rq);

		return;

	}



	cb = band->owner.md_fn;

	band->owner.md_fn = NULL;



	priv = band->owner.priv;

	band->owner.priv = NULL;



	status = FTL_MD_SUCCESS;



	cb(band, priv, status);

}



void

ftl_band_read_tail_brq_md(struct ftl_band *band, ftl_band_md_cb cb, void *cntx)

{

	struct spdk_ftl_dev *dev = band->dev;

	struct ftl_basic_rq *rq = &band->metadata_rq;



	ftl_basic_rq_init(dev, rq, band->p2l_map.band_map, ftl_tail_md_num_blocks(dev));

	ftl_basic_rq_set_owner(rq, read_tail_md_cb, band);



	assert(!band->owner.md_fn);

	assert(!band->owner.priv);

	band->owner.md_fn = cb;

	band->owner.priv = cntx;



	rq->io.band = band;

	rq->io.addr = band->tail_md_addr;



	ftl_band_basic_rq_read(band, &band->metadata_rq);

}