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-rw-r--r--drivers/block/null_blk.c32
-rw-r--r--drivers/lightnvm/Kconfig1
-rw-r--r--drivers/lightnvm/core.c85
-rw-r--r--drivers/lightnvm/gennvm.c20
-rw-r--r--drivers/lightnvm/rrpc.c25
-rw-r--r--drivers/nvme/host/lightnvm.c26
6 files changed, 110 insertions, 79 deletions
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index 0c3940ec5e62..8162475d96b5 100644
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -444,8 +444,9 @@ static void null_lnvm_end_io(struct request *rq, int error)
blk_put_request(rq);
}
-static int null_lnvm_submit_io(struct request_queue *q, struct nvm_rq *rqd)
+static int null_lnvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
{
+ struct request_queue *q = dev->q;
struct request *rq;
struct bio *bio = rqd->bio;
@@ -470,7 +471,7 @@ static int null_lnvm_submit_io(struct request_queue *q, struct nvm_rq *rqd)
return 0;
}
-static int null_lnvm_id(struct request_queue *q, struct nvm_id *id)
+static int null_lnvm_id(struct nvm_dev *dev, struct nvm_id *id)
{
sector_t size = gb * 1024 * 1024 * 1024ULL;
sector_t blksize;
@@ -523,7 +524,7 @@ static int null_lnvm_id(struct request_queue *q, struct nvm_id *id)
return 0;
}
-static void *null_lnvm_create_dma_pool(struct request_queue *q, char *name)
+static void *null_lnvm_create_dma_pool(struct nvm_dev *dev, char *name)
{
mempool_t *virtmem_pool;
@@ -541,7 +542,7 @@ static void null_lnvm_destroy_dma_pool(void *pool)
mempool_destroy(pool);
}
-static void *null_lnvm_dev_dma_alloc(struct request_queue *q, void *pool,
+static void *null_lnvm_dev_dma_alloc(struct nvm_dev *dev, void *pool,
gfp_t mem_flags, dma_addr_t *dma_handler)
{
return mempool_alloc(pool, mem_flags);
@@ -765,7 +766,9 @@ out:
static int __init null_init(void)
{
+ int ret = 0;
unsigned int i;
+ struct nullb *nullb;
if (bs > PAGE_SIZE) {
pr_warn("null_blk: invalid block size\n");
@@ -807,22 +810,29 @@ static int __init null_init(void)
0, 0, NULL);
if (!ppa_cache) {
pr_err("null_blk: unable to create ppa cache\n");
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto err_ppa;
}
}
for (i = 0; i < nr_devices; i++) {
- if (null_add_dev()) {
- unregister_blkdev(null_major, "nullb");
- goto err_ppa;
- }
+ ret = null_add_dev();
+ if (ret)
+ goto err_dev;
}
pr_info("null: module loaded\n");
return 0;
-err_ppa:
+
+err_dev:
+ while (!list_empty(&nullb_list)) {
+ nullb = list_entry(nullb_list.next, struct nullb, list);
+ null_del_dev(nullb);
+ }
kmem_cache_destroy(ppa_cache);
- return -EINVAL;
+err_ppa:
+ unregister_blkdev(null_major, "nullb");
+ return ret;
}
static void __exit null_exit(void)
diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig
index a16bf56d3f28..85a339030e4b 100644
--- a/drivers/lightnvm/Kconfig
+++ b/drivers/lightnvm/Kconfig
@@ -18,6 +18,7 @@ if NVM
config NVM_DEBUG
bool "Open-Channel SSD debugging support"
+ default n
---help---
Exposes a debug management interface to create/remove targets at:
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 86ce887b2ed6..8f41b245cd55 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -74,7 +74,7 @@ EXPORT_SYMBOL(nvm_unregister_target);
void *nvm_dev_dma_alloc(struct nvm_dev *dev, gfp_t mem_flags,
dma_addr_t *dma_handler)
{
- return dev->ops->dev_dma_alloc(dev->q, dev->ppalist_pool, mem_flags,
+ return dev->ops->dev_dma_alloc(dev, dev->ppalist_pool, mem_flags,
dma_handler);
}
EXPORT_SYMBOL(nvm_dev_dma_alloc);
@@ -97,15 +97,47 @@ static struct nvmm_type *nvm_find_mgr_type(const char *name)
return NULL;
}
+struct nvmm_type *nvm_init_mgr(struct nvm_dev *dev)
+{
+ struct nvmm_type *mt;
+ int ret;
+
+ lockdep_assert_held(&nvm_lock);
+
+ list_for_each_entry(mt, &nvm_mgrs, list) {
+ ret = mt->register_mgr(dev);
+ if (ret < 0) {
+ pr_err("nvm: media mgr failed to init (%d) on dev %s\n",
+ ret, dev->name);
+ return NULL; /* initialization failed */
+ } else if (ret > 0)
+ return mt;
+ }
+
+ return NULL;
+}
+
int nvm_register_mgr(struct nvmm_type *mt)
{
+ struct nvm_dev *dev;
int ret = 0;
down_write(&nvm_lock);
- if (nvm_find_mgr_type(mt->name))
+ if (nvm_find_mgr_type(mt->name)) {
ret = -EEXIST;
- else
+ goto finish;
+ } else {
list_add(&mt->list, &nvm_mgrs);
+ }
+
+ /* try to register media mgr if any device have none configured */
+ list_for_each_entry(dev, &nvm_devices, devices) {
+ if (dev->mt)
+ continue;
+
+ dev->mt = nvm_init_mgr(dev);
+ }
+finish:
up_write(&nvm_lock);
return ret;
@@ -123,26 +155,6 @@ void nvm_unregister_mgr(struct nvmm_type *mt)
}
EXPORT_SYMBOL(nvm_unregister_mgr);
-/* register with device with a supported manager */
-static int register_mgr(struct nvm_dev *dev)
-{
- struct nvmm_type *mt;
- int ret = 0;
-
- list_for_each_entry(mt, &nvm_mgrs, list) {
- ret = mt->register_mgr(dev);
- if (ret > 0) {
- dev->mt = mt;
- break; /* successfully initialized */
- }
- }
-
- if (!ret)
- pr_info("nvm: no compatible nvm manager found.\n");
-
- return ret;
-}
-
static struct nvm_dev *nvm_find_nvm_dev(const char *name)
{
struct nvm_dev *dev;
@@ -246,7 +258,7 @@ static int nvm_init(struct nvm_dev *dev)
if (!dev->q || !dev->ops)
return ret;
- if (dev->ops->identity(dev->q, &dev->identity)) {
+ if (dev->ops->identity(dev, &dev->identity)) {
pr_err("nvm: device could not be identified\n");
goto err;
}
@@ -271,14 +283,6 @@ static int nvm_init(struct nvm_dev *dev)
goto err;
}
- down_write(&nvm_lock);
- ret = register_mgr(dev);
- up_write(&nvm_lock);
- if (ret < 0)
- goto err;
- if (!ret)
- return 0;
-
pr_info("nvm: registered %s [%u/%u/%u/%u/%u/%u]\n",
dev->name, dev->sec_per_pg, dev->nr_planes,
dev->pgs_per_blk, dev->blks_per_lun, dev->nr_luns,
@@ -326,8 +330,7 @@ int nvm_register(struct request_queue *q, char *disk_name,
}
if (dev->ops->max_phys_sect > 1) {
- dev->ppalist_pool = dev->ops->create_dma_pool(dev->q,
- "ppalist");
+ dev->ppalist_pool = dev->ops->create_dma_pool(dev, "ppalist");
if (!dev->ppalist_pool) {
pr_err("nvm: could not create ppa pool\n");
ret = -ENOMEM;
@@ -335,7 +338,9 @@ int nvm_register(struct request_queue *q, char *disk_name,
}
}
+ /* register device with a supported media manager */
down_write(&nvm_lock);
+ dev->mt = nvm_init_mgr(dev);
list_add(&dev->devices, &nvm_devices);
up_write(&nvm_lock);
@@ -380,19 +385,13 @@ static int nvm_create_target(struct nvm_dev *dev,
struct nvm_tgt_type *tt;
struct nvm_target *t;
void *targetdata;
- int ret = 0;
- down_write(&nvm_lock);
if (!dev->mt) {
- ret = register_mgr(dev);
- if (!ret)
- ret = -ENODEV;
- if (ret < 0) {
- up_write(&nvm_lock);
- return ret;
- }
+ pr_info("nvm: device has no media manager registered.\n");
+ return -ENODEV;
}
+ down_write(&nvm_lock);
tt = nvm_find_target_type(create->tgttype);
if (!tt) {
pr_err("nvm: target type %s not found\n", create->tgttype);
diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c
index 35dde84b71e9..f434e89e1c7a 100644
--- a/drivers/lightnvm/gennvm.c
+++ b/drivers/lightnvm/gennvm.c
@@ -195,7 +195,7 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn)
}
if (dev->ops->get_l2p_tbl) {
- ret = dev->ops->get_l2p_tbl(dev->q, 0, dev->total_pages,
+ ret = dev->ops->get_l2p_tbl(dev, 0, dev->total_pages,
gennvm_block_map, dev);
if (ret) {
pr_err("gennvm: could not read L2P table.\n");
@@ -219,6 +219,9 @@ static int gennvm_register(struct nvm_dev *dev)
struct gen_nvm *gn;
int ret;
+ if (!try_module_get(THIS_MODULE))
+ return -ENODEV;
+
gn = kzalloc(sizeof(struct gen_nvm), GFP_KERNEL);
if (!gn)
return -ENOMEM;
@@ -242,12 +245,14 @@ static int gennvm_register(struct nvm_dev *dev)
return 1;
err:
gennvm_free(dev);
+ module_put(THIS_MODULE);
return ret;
}
static void gennvm_unregister(struct nvm_dev *dev)
{
gennvm_free(dev);
+ module_put(THIS_MODULE);
}
static struct nvm_block *gennvm_get_blk(struct nvm_dev *dev,
@@ -262,14 +267,11 @@ static struct nvm_block *gennvm_get_blk(struct nvm_dev *dev,
if (list_empty(&lun->free_list)) {
pr_err_ratelimited("gennvm: lun %u have no free pages available",
lun->vlun.id);
- spin_unlock(&vlun->lock);
goto out;
}
- while (!is_gc && lun->vlun.nr_free_blocks < lun->reserved_blocks) {
- spin_unlock(&vlun->lock);
+ if (!is_gc && lun->vlun.nr_free_blocks < lun->reserved_blocks)
goto out;
- }
blk = list_first_entry(&lun->free_list, struct nvm_block, list);
list_move_tail(&blk->list, &lun->used_list);
@@ -278,8 +280,8 @@ static struct nvm_block *gennvm_get_blk(struct nvm_dev *dev,
lun->vlun.nr_free_blocks--;
lun->vlun.nr_inuse_blocks++;
- spin_unlock(&vlun->lock);
out:
+ spin_unlock(&vlun->lock);
return blk;
}
@@ -349,7 +351,7 @@ static int gennvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
gennvm_generic_to_addr_mode(dev, rqd);
rqd->dev = dev;
- return dev->ops->submit_io(dev->q, rqd);
+ return dev->ops->submit_io(dev, rqd);
}
static void gennvm_blk_set_type(struct nvm_dev *dev, struct ppa_addr *ppa,
@@ -385,7 +387,7 @@ static void gennvm_mark_blk_bad(struct nvm_dev *dev, struct nvm_rq *rqd)
if (!dev->ops->set_bb_tbl)
return;
- if (dev->ops->set_bb_tbl(dev->q, rqd, 1))
+ if (dev->ops->set_bb_tbl(dev, rqd, 1))
return;
gennvm_addr_to_generic_mode(dev, rqd);
@@ -453,7 +455,7 @@ static int gennvm_erase_blk(struct nvm_dev *dev, struct nvm_block *blk,
gennvm_generic_to_addr_mode(dev, &rqd);
- ret = dev->ops->erase_block(dev->q, &rqd);
+ ret = dev->ops->erase_block(dev, &rqd);
if (plane_cnt)
nvm_dev_dma_free(dev, rqd.ppa_list, rqd.dma_ppa_list);
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index 75e59c3a3f96..134e4faba482 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -182,7 +182,7 @@ static struct rrpc_block *rrpc_get_blk(struct rrpc *rrpc, struct rrpc_lun *rlun,
struct nvm_block *blk;
struct rrpc_block *rblk;
- blk = nvm_get_blk(rrpc->dev, rlun->parent, 0);
+ blk = nvm_get_blk(rrpc->dev, rlun->parent, flags);
if (!blk)
return NULL;
@@ -202,6 +202,20 @@ static void rrpc_put_blk(struct rrpc *rrpc, struct rrpc_block *rblk)
nvm_put_blk(rrpc->dev, rblk->parent);
}
+static void rrpc_put_blks(struct rrpc *rrpc)
+{
+ struct rrpc_lun *rlun;
+ int i;
+
+ for (i = 0; i < rrpc->nr_luns; i++) {
+ rlun = &rrpc->luns[i];
+ if (rlun->cur)
+ rrpc_put_blk(rrpc, rlun->cur);
+ if (rlun->gc_cur)
+ rrpc_put_blk(rrpc, rlun->gc_cur);
+ }
+}
+
static struct rrpc_lun *get_next_lun(struct rrpc *rrpc)
{
int next = atomic_inc_return(&rrpc->next_lun);
@@ -1002,7 +1016,7 @@ static int rrpc_map_init(struct rrpc *rrpc)
return 0;
/* Bring up the mapping table from device */
- ret = dev->ops->get_l2p_tbl(dev->q, 0, dev->total_pages,
+ ret = dev->ops->get_l2p_tbl(dev, 0, dev->total_pages,
rrpc_l2p_update, rrpc);
if (ret) {
pr_err("nvm: rrpc: could not read L2P table.\n");
@@ -1224,18 +1238,21 @@ static int rrpc_luns_configure(struct rrpc *rrpc)
rblk = rrpc_get_blk(rrpc, rlun, 0);
if (!rblk)
- return -EINVAL;
+ goto err;
rrpc_set_lun_cur(rlun, rblk);
/* Emergency gc block */
rblk = rrpc_get_blk(rrpc, rlun, 1);
if (!rblk)
- return -EINVAL;
+ goto err;
rlun->gc_cur = rblk;
}
return 0;
+err:
+ rrpc_put_blks(rrpc);
+ return -EINVAL;
}
static struct nvm_tgt_type tt_rrpc;
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 06c336410235..15f2acb4d5cd 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -271,9 +271,9 @@ static int init_grps(struct nvm_id *nvm_id, struct nvme_nvm_id *nvme_nvm_id)
return 0;
}
-static int nvme_nvm_identity(struct request_queue *q, struct nvm_id *nvm_id)
+static int nvme_nvm_identity(struct nvm_dev *nvmdev, struct nvm_id *nvm_id)
{
- struct nvme_ns *ns = q->queuedata;
+ struct nvme_ns *ns = nvmdev->q->queuedata;
struct nvme_dev *dev = ns->dev;
struct nvme_nvm_id *nvme_nvm_id;
struct nvme_nvm_command c = {};
@@ -308,10 +308,10 @@ out:
return ret;
}
-static int nvme_nvm_get_l2p_tbl(struct request_queue *q, u64 slba, u32 nlb,
+static int nvme_nvm_get_l2p_tbl(struct nvm_dev *nvmdev, u64 slba, u32 nlb,
nvm_l2p_update_fn *update_l2p, void *priv)
{
- struct nvme_ns *ns = q->queuedata;
+ struct nvme_ns *ns = nvmdev->q->queuedata;
struct nvme_dev *dev = ns->dev;
struct nvme_nvm_command c = {};
u32 len = queue_max_hw_sectors(dev->admin_q) << 9;
@@ -415,10 +415,10 @@ out:
return ret;
}
-static int nvme_nvm_set_bb_tbl(struct request_queue *q, struct nvm_rq *rqd,
+static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct nvm_rq *rqd,
int type)
{
- struct nvme_ns *ns = q->queuedata;
+ struct nvme_ns *ns = nvmdev->q->queuedata;
struct nvme_dev *dev = ns->dev;
struct nvme_nvm_command c = {};
int ret = 0;
@@ -455,7 +455,7 @@ static void nvme_nvm_end_io(struct request *rq, int error)
struct nvm_rq *rqd = rq->end_io_data;
struct nvm_dev *dev = rqd->dev;
- if (dev->mt->end_io(rqd, error))
+ if (dev->mt && dev->mt->end_io(rqd, error))
pr_err("nvme: err status: %x result: %lx\n",
rq->errors, (unsigned long)rq->special);
@@ -463,8 +463,9 @@ static void nvme_nvm_end_io(struct request *rq, int error)
blk_mq_free_request(rq);
}
-static int nvme_nvm_submit_io(struct request_queue *q, struct nvm_rq *rqd)
+static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
{
+ struct request_queue *q = dev->q;
struct nvme_ns *ns = q->queuedata;
struct request *rq;
struct bio *bio = rqd->bio;
@@ -502,8 +503,9 @@ static int nvme_nvm_submit_io(struct request_queue *q, struct nvm_rq *rqd)
return 0;
}
-static int nvme_nvm_erase_block(struct request_queue *q, struct nvm_rq *rqd)
+static int nvme_nvm_erase_block(struct nvm_dev *dev, struct nvm_rq *rqd)
{
+ struct request_queue *q = dev->q;
struct nvme_ns *ns = q->queuedata;
struct nvme_nvm_command c = {};
@@ -515,9 +517,9 @@ static int nvme_nvm_erase_block(struct request_queue *q, struct nvm_rq *rqd)
return nvme_submit_sync_cmd(q, (struct nvme_command *)&c, NULL, 0);
}
-static void *nvme_nvm_create_dma_pool(struct request_queue *q, char *name)
+static void *nvme_nvm_create_dma_pool(struct nvm_dev *nvmdev, char *name)
{
- struct nvme_ns *ns = q->queuedata;
+ struct nvme_ns *ns = nvmdev->q->queuedata;
struct nvme_dev *dev = ns->dev;
return dma_pool_create(name, dev->dev, PAGE_SIZE, PAGE_SIZE, 0);
@@ -530,7 +532,7 @@ static void nvme_nvm_destroy_dma_pool(void *pool)
dma_pool_destroy(dma_pool);
}
-static void *nvme_nvm_dev_dma_alloc(struct request_queue *q, void *pool,
+static void *nvme_nvm_dev_dma_alloc(struct nvm_dev *dev, void *pool,
gfp_t mem_flags, dma_addr_t *dma_handler)
{
return dma_pool_alloc(pool, mem_flags, dma_handler);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 03:22:17 +0000