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Subject[PATCH 22/23] lightnvm: use target nvm on target-specific ops.
Date
From: Javier González <jg@lightnvm.io>

On target-specific operations pass on nvm_tgt_dev instead of the generic
nvm device.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
---
drivers/lightnvm/core.c | 15 ++++++++++-----
drivers/lightnvm/rrpc.c | 14 +++++++-------
drivers/lightnvm/rrpc.h | 2 +-
include/linux/lightnvm.h | 6 +++---
4 files changed, 21 insertions(+), 16 deletions(-)

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 3d8eaac..07bf989 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -86,8 +86,7 @@ void *nvm_dev_dma_alloc(struct nvm_dev *dev, gfp_t mem_flags,
}
EXPORT_SYMBOL(nvm_dev_dma_alloc);

-void nvm_dev_dma_free(struct nvm_dev *dev, void *addr,
- dma_addr_t dma_handler)
+void nvm_dev_dma_free(struct nvm_dev *dev, void *addr, dma_addr_t dma_handler)
{
dev->ops->dev_dma_free(dev->dma_pool, addr, dma_handler);
}
@@ -227,9 +226,11 @@ 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,
+int nvm_get_l2p_tbl(struct nvm_tgt_dev *tgt_dev, u64 slba, u32 nlb,
nvm_l2p_update_fn *update_l2p, void *priv)
{
+ struct nvm_dev *dev = tgt_dev->parent;
+
if (!dev->ops->get_l2p_tbl)
return 0;

@@ -237,14 +238,18 @@ int nvm_get_l2p_tbl(struct nvm_dev *dev, u64 slba, u32 nlb,
}
EXPORT_SYMBOL(nvm_get_l2p_tbl);

-int nvm_get_area(struct nvm_dev *dev, sector_t *lba, sector_t len)
+int nvm_get_area(struct nvm_tgt_dev *tgt_dev, sector_t *lba, sector_t len)
{
+ struct nvm_dev *dev = tgt_dev->parent;
+
return dev->mt->get_area(dev, lba, len);
}
EXPORT_SYMBOL(nvm_get_area);

-void nvm_put_area(struct nvm_dev *dev, sector_t lba)
+void nvm_put_area(struct nvm_tgt_dev *tgt_dev, sector_t lba)
{
+ struct nvm_dev *dev = tgt_dev->parent;
+
dev->mt->put_area(dev, lba);
}
EXPORT_SYMBOL(nvm_put_area);
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index e4678b7..8a27bcc 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -983,8 +983,8 @@ static int rrpc_submit_io(struct rrpc *rrpc, struct bio *bio,
if (!(flags & NVM_IOTYPE_GC)) {
rrpc_unlock_rq(rrpc, rqd);
if (rqd->nr_ppas > 1)
- nvm_dev_dma_free(dev->parent,
- rqd->ppa_list, rqd->dma_ppa_list);
+ nvm_dev_dma_free(dev->parent, rqd->ppa_list,
+ rqd->dma_ppa_list);
}
return NVM_IO_ERR;
}
@@ -1116,7 +1116,7 @@ static int rrpc_l2p_update(u64 slba, u32 nlb, __le64 *entries, void *private)

div_u64_rem(pba, rrpc->nr_sects, &mod);

- gaddr = rrpc_recov_addr(dev->parent, pba);
+ gaddr = rrpc_recov_addr(dev, pba);
rlun = rrpc_ppa_to_lun(rrpc, gaddr);
if (!rlun) {
pr_err("rrpc: l2p corruption on lba %llu\n",
@@ -1167,8 +1167,8 @@ static int rrpc_map_init(struct rrpc *rrpc)
}

/* Bring up the mapping table from device */
- ret = nvm_get_l2p_tbl(dev->parent, rrpc->soffset, rrpc->nr_sects,
- rrpc_l2p_update, rrpc);
+ ret = nvm_get_l2p_tbl(dev, rrpc->soffset, rrpc->nr_sects,
+ rrpc_l2p_update, rrpc);
if (ret) {
pr_err("nvm: rrpc: could not read L2P table.\n");
return -EINVAL;
@@ -1376,7 +1376,7 @@ static int rrpc_area_init(struct rrpc *rrpc, sector_t *begin)

size >>= 9;

- ret = nvm_get_area(dev->parent, begin, size);
+ ret = nvm_get_area(dev, begin, size);
if (!ret)
*begin >>= (ilog2(dev->geo.sec_size) - 9);

@@ -1388,7 +1388,7 @@ static void rrpc_area_free(struct rrpc *rrpc)
struct nvm_tgt_dev *dev = rrpc->dev;
sector_t begin = rrpc->soffset << (ilog2(dev->geo.sec_size) - 9);

- nvm_put_area(dev->parent, begin);
+ nvm_put_area(dev, begin);
}

static void rrpc_free(struct rrpc *rrpc)
diff --git a/drivers/lightnvm/rrpc.h b/drivers/lightnvm/rrpc.h
index bc8adba..94e4d73 100644
--- a/drivers/lightnvm/rrpc.h
+++ b/drivers/lightnvm/rrpc.h
@@ -184,7 +184,7 @@ static inline struct ppa_addr rrpc_linear_to_generic_addr(struct nvm_geo *geo,
return l;
}

-static inline struct ppa_addr rrpc_recov_addr(struct nvm_dev *dev, u64 pba)
+static inline struct ppa_addr rrpc_recov_addr(struct nvm_tgt_dev *dev, u64 pba)
{
return linear_to_generic_addr(&dev->geo, pba);
}
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 9637531..e76f9c4 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -538,10 +538,10 @@ extern int nvm_set_rqd_ppalist(struct nvm_dev *, struct nvm_rq *,
extern void nvm_free_rqd_ppalist(struct nvm_dev *, struct nvm_rq *);
extern int nvm_erase_ppa(struct nvm_dev *, struct ppa_addr *, int, int);
extern int nvm_erase_blk(struct nvm_tgt_dev *, struct ppa_addr *, int);
-extern int nvm_get_l2p_tbl(struct nvm_dev *, u64, u32, nvm_l2p_update_fn *,
+extern int nvm_get_l2p_tbl(struct nvm_tgt_dev *, u64, u32, nvm_l2p_update_fn *,
void *);
-extern int nvm_get_area(struct nvm_dev *, sector_t *, sector_t);
-extern void nvm_put_area(struct nvm_dev *, sector_t);
+extern int nvm_get_area(struct nvm_tgt_dev *, sector_t *, sector_t);
+extern void nvm_put_area(struct nvm_tgt_dev *, sector_t);
extern void nvm_end_io(struct nvm_rq *, int);
extern int nvm_submit_ppa(struct nvm_dev *, struct ppa_addr *, int, int, int,
void *, int);
--
2.9.3
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