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authorJavier González <jg@lightnvm.io>2016-11-28 22:39:11 +0100
committerJens Axboe <axboe@fb.com>2016-11-29 12:12:51 -0700
commit959e911b31981b52ed3f3d6e351b107bcb9163ef (patch)
tree52f99be3c1f8fb556f3314b702547929d2f0559b /drivers/lightnvm
parent8e53624d44c1de31b1b0d4f500703669418a4c67 (diff)
downloadlinux-959e911b31981b52ed3f3d6e351b107bcb9163ef.tar.bz2
lightnvm: introduce helpers for generic ops in rrpc
Avoid calling media manager and device-specific operations directly from rrpc. Create helper functions on lightnvm's core instead. Signed-off-by: Javier González <javier@cnexlabs.com> Made it work with null_blk as well. Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/lightnvm')
-rw-r--r--drivers/lightnvm/core.c22
-rw-r--r--drivers/lightnvm/gennvm.c2
-rw-r--r--drivers/lightnvm/rrpc.c25
3 files changed, 34 insertions, 15 deletions
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 23d582f82219..69f261e650bc 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -219,6 +219,28 @@ int nvm_erase_blk(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p, int flags)
}
EXPORT_SYMBOL(nvm_erase_blk);
+int nvm_get_l2p_tbl(struct nvm_dev *dev, u64 slba, u32 nlb,
+ nvm_l2p_update_fn *update_l2p, void *priv)
+{
+ if (!dev->ops->get_l2p_tbl)
+ return 0;
+
+ return dev->ops->get_l2p_tbl(dev, slba, nlb, update_l2p, priv);
+}
+EXPORT_SYMBOL(nvm_get_l2p_tbl);
+
+int nvm_get_area(struct nvm_dev *dev, sector_t *lba, sector_t len)
+{
+ return dev->mt->get_area(dev, lba, len);
+}
+EXPORT_SYMBOL(nvm_get_area);
+
+void nvm_put_area(struct nvm_dev *dev, sector_t lba)
+{
+ dev->mt->put_area(dev, lba);
+}
+EXPORT_SYMBOL(nvm_put_area);
+
void nvm_addr_to_generic_mode(struct nvm_dev *dev, struct nvm_rq *rqd)
{
int i;
diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c
index 5d7c8c47bef8..befa8281ab3f 100644
--- a/drivers/lightnvm/gennvm.c
+++ b/drivers/lightnvm/gennvm.c
@@ -175,8 +175,6 @@ static struct nvm_tgt_dev *gen_create_tgt_dev(struct nvm_dev *dev,
tgt_dev->geo.luns_per_chnl = (lun_balanced) ? prev_nr_luns : -1;
tgt_dev->total_secs = nr_luns * tgt_dev->geo.sec_per_lun;
tgt_dev->q = dev->q;
- tgt_dev->ops = dev->ops;
- tgt_dev->mt = dev->mt;
tgt_dev->map = dev_map;
tgt_dev->luns = luns;
memcpy(&tgt_dev->identity, &dev->identity, sizeof(struct nvm_id));
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index 75ed12ae0f47..e4678b749ba5 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -1166,11 +1166,8 @@ static int rrpc_map_init(struct rrpc *rrpc)
r->addr = ADDR_EMPTY;
}
- if (!dev->ops->get_l2p_tbl)
- return 0;
-
/* Bring up the mapping table from device */
- ret = dev->ops->get_l2p_tbl(dev->parent, rrpc->soffset, rrpc->nr_sects,
+ ret = nvm_get_l2p_tbl(dev->parent, rrpc->soffset, rrpc->nr_sects,
rrpc_l2p_update, rrpc);
if (ret) {
pr_err("nvm: rrpc: could not read L2P table.\n");
@@ -1258,6 +1255,9 @@ static int rrpc_bb_discovery(struct nvm_tgt_dev *dev, struct rrpc_lun *rlun)
int i;
int ret;
+ if (!dev->parent->ops->get_bb_tbl)
+ return 0;
+
nr_blks = geo->blks_per_lun * geo->plane_mode;
blks = kmalloc(nr_blks, GFP_KERNEL);
if (!blks)
@@ -1277,7 +1277,6 @@ static int rrpc_bb_discovery(struct nvm_tgt_dev *dev, struct rrpc_lun *rlun)
if (nr_blks < 0)
return nr_blks;
- rlun->nr_free_blocks = geo->blks_per_lun;
for (i = 0; i < nr_blks; i++) {
if (blks[i] == NVM_BLK_T_FREE)
continue;
@@ -1348,17 +1347,19 @@ static int rrpc_luns_init(struct rrpc *rrpc, struct ppa_addr *luns)
list_add_tail(&rblk->list, &rlun->free_list);
}
- if (rrpc_bb_discovery(dev, rlun))
- goto err;
-
+ rlun->rrpc = rrpc;
+ rlun->nr_free_blocks = geo->blks_per_lun;
rlun->reserved_blocks = 2; /* for GC only */
- rlun->rrpc = rrpc;
INIT_LIST_HEAD(&rlun->prio_list);
INIT_LIST_HEAD(&rlun->wblk_list);
INIT_WORK(&rlun->ws_gc, rrpc_lun_gc);
spin_lock_init(&rlun->lock);
+
+ if (rrpc_bb_discovery(dev, rlun))
+ goto err;
+
}
return 0;
@@ -1370,13 +1371,12 @@ err:
static int rrpc_area_init(struct rrpc *rrpc, sector_t *begin)
{
struct nvm_tgt_dev *dev = rrpc->dev;
- struct nvmm_type *mt = dev->mt;
sector_t size = rrpc->nr_sects * dev->geo.sec_size;
int ret;
size >>= 9;
- ret = mt->get_area(dev->parent, begin, size);
+ ret = nvm_get_area(dev->parent, begin, size);
if (!ret)
*begin >>= (ilog2(dev->geo.sec_size) - 9);
@@ -1386,10 +1386,9 @@ static int rrpc_area_init(struct rrpc *rrpc, sector_t *begin)
static void rrpc_area_free(struct rrpc *rrpc)
{
struct nvm_tgt_dev *dev = rrpc->dev;
- struct nvmm_type *mt = dev->mt;
sector_t begin = rrpc->soffset << (ilog2(dev->geo.sec_size) - 9);
- mt->put_area(dev->parent, begin);
+ nvm_put_area(dev->parent, begin);
}
static void rrpc_free(struct rrpc *rrpc)