Commit 656e33ca authored by Matias Bjørling's avatar Matias Bjørling Committed by Jens Axboe

lightnvm: move device L2P detection to core

A 1.2 device is able to manage the logical to physical mapping
table internally or leave it to the host.

A target only supports one of those approaches, and therefore must
check on initialization. Move this check to core to avoid each target
implement the check.
Signed-off-by: default avatarMatias Bjørling <mb@lightnvm.io>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 4b5d56ed
...@@ -355,6 +355,11 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create) ...@@ -355,6 +355,11 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
return -EINVAL; return -EINVAL;
} }
if ((tt->flags & NVM_TGT_F_HOST_L2P) != (dev->geo.dom & NVM_RSP_L2P)) {
pr_err("nvm: device is incompatible with target L2P type.\n");
return -EINVAL;
}
if (nvm_target_exists(create->tgtname)) { if (nvm_target_exists(create->tgtname)) {
pr_err("nvm: target name already exists (%s)\n", pr_err("nvm: target name already exists (%s)\n",
create->tgtname); create->tgtname);
......
...@@ -1210,13 +1210,6 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk, ...@@ -1210,13 +1210,6 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk,
return ERR_PTR(-EINVAL); return ERR_PTR(-EINVAL);
} }
if (geo->version == NVM_OCSSD_SPEC_12 && geo->dom & NVM_RSP_L2P) {
pblk_err(pblk, "host-side L2P table not supported. (%x)\n",
geo->dom);
kfree(pblk);
return ERR_PTR(-EINVAL);
}
spin_lock_init(&pblk->resubmit_lock); spin_lock_init(&pblk->resubmit_lock);
spin_lock_init(&pblk->trans_lock); spin_lock_init(&pblk->trans_lock);
spin_lock_init(&pblk->lock); spin_lock_init(&pblk->lock);
......
...@@ -495,9 +495,15 @@ typedef void (nvm_tgt_exit_fn)(void *, bool); ...@@ -495,9 +495,15 @@ typedef void (nvm_tgt_exit_fn)(void *, bool);
typedef int (nvm_tgt_sysfs_init_fn)(struct gendisk *); typedef int (nvm_tgt_sysfs_init_fn)(struct gendisk *);
typedef void (nvm_tgt_sysfs_exit_fn)(struct gendisk *); typedef void (nvm_tgt_sysfs_exit_fn)(struct gendisk *);
enum {
NVM_TGT_F_DEV_L2P = 0,
NVM_TGT_F_HOST_L2P = 1 << 0,
};
struct nvm_tgt_type { struct nvm_tgt_type {
const char *name; const char *name;
unsigned int version[3]; unsigned int version[3];
int flags;
/* target entry points */ /* target entry points */
nvm_tgt_make_rq_fn *make_rq; nvm_tgt_make_rq_fn *make_rq;
......
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