lightnvm: remove nvm_dev_ops->max_phys_sect

The value of max_phys_sect is always static. Instead of
defining it in the nvm_dev_ops structure, declare it as a global
value.

Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

4 files changed, 14 insertions, 36 deletions

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index a59ad29600c3..9704db219866 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -407,7 +407,8 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
 	tdisk->private_data = targetdata;
 	tqueue->queuedata = targetdata;
 
-	blk_queue_max_hw_sectors(tqueue, 8 * dev->ops->max_phys_sect);
+	blk_queue_max_hw_sectors(tqueue,
+			(dev->geo.sec_size >> 9) * NVM_MAX_VLBA);
 
 	set_capacity(tdisk, tt->capacity(targetdata));
 	add_disk(tdisk);
@@ -719,7 +720,7 @@ int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
 	struct nvm_rq rqd;
 	int ret;
 
-	if (nr_ppas > dev->ops->max_phys_sect) {
+	if (nr_ppas > NVM_MAX_VLBA) {
 		pr_err("nvm: unable to update all blocks atomically\n");
 		return -EINVAL;
 	}
@@ -740,14 +741,6 @@ int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
 }
 EXPORT_SYMBOL(nvm_set_tgt_bb_tbl);
 
-int nvm_max_phys_sects(struct nvm_tgt_dev *tgt_dev)
-{
-	struct nvm_dev *dev = tgt_dev->parent;
-
-	return dev->ops->max_phys_sect;
-}
-EXPORT_SYMBOL(nvm_max_phys_sects);
-
 int nvm_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
 {
 	struct nvm_dev *dev = tgt_dev->parent;
@@ -965,17 +958,10 @@ int nvm_register(struct nvm_dev *dev)
 	if (!dev->q || !dev->ops)
 		return -EINVAL;
 
-	if (dev->ops->max_phys_sect > 256) {
-		pr_info("nvm: max sectors supported is 256.\n");
-		return -EINVAL;
-	}
-
-	if (dev->ops->max_phys_sect > 1) {
-		dev->dma_pool = dev->ops->create_dma_pool(dev, "ppalist");
-		if (!dev->dma_pool) {
-			pr_err("nvm: could not create dma pool\n");
-			return -ENOMEM;
-		}
+	dev->dma_pool = dev->ops->create_dma_pool(dev, "ppalist");
+	if (!dev->dma_pool) {
+		pr_err("nvm: could not create dma pool\n");
+		return -ENOMEM;
 	}
 
 	ret = nvm_init(dev);
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index 141036bd6afa..43b835678f48 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -260,8 +260,7 @@ static int pblk_core_init(struct pblk *pblk)
 		return -ENOMEM;
 
 	/* Internal bios can be at most the sectors signaled by the device. */
-	pblk->page_bio_pool = mempool_create_page_pool(nvm_max_phys_sects(dev),
-									0);
+	pblk->page_bio_pool = mempool_create_page_pool(NVM_MAX_VLBA, 0);
 	if (!pblk->page_bio_pool)
 		goto free_global_caches;
 
@@ -716,12 +715,12 @@ static int pblk_lines_init(struct pblk *pblk)
 
 	pblk->min_write_pgs = geo->sec_per_pl * (geo->sec_size / PAGE_SIZE);
 	max_write_ppas = pblk->min_write_pgs * geo->all_luns;
-	pblk->max_write_pgs = (max_write_ppas < nvm_max_phys_sects(dev)) ?
-				max_write_ppas : nvm_max_phys_sects(dev);
+	pblk->max_write_pgs = min_t(int, max_write_ppas, NVM_MAX_VLBA);
 	pblk_set_sec_per_write(pblk, pblk->min_write_pgs);
 
 	if (pblk->max_write_pgs > PBLK_MAX_REQ_ADDRS) {
-		pr_err("pblk: cannot support device max_phys_sect\n");
+		pr_err("pblk: vector list too big(%u > %u)\n",
+				pblk->max_write_pgs, PBLK_MAX_REQ_ADDRS);
 		return -EINVAL;
 	}
 
diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index e75a1af2eebe..aaab9a5c17cc 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -21,17 +21,15 @@ void pblk_submit_rec(struct work_struct *work)
 	struct pblk_rec_ctx *recovery =
 			container_of(work, struct pblk_rec_ctx, ws_rec);
 	struct pblk *pblk = recovery->pblk;
-	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_rq *rqd = recovery->rqd;
 	struct pblk_c_ctx *c_ctx = nvm_rq_to_pdu(rqd);
-	int max_secs = nvm_max_phys_sects(dev);
 	struct bio *bio;
 	unsigned int nr_rec_secs;
 	unsigned int pgs_read;
 	int ret;
 
 	nr_rec_secs = bitmap_weight((unsigned long int *)&rqd->ppa_status,
-								max_secs);
+								NVM_MAX_VLBA);
 
 	bio = bio_alloc(GFP_KERNEL, nr_rec_secs);
 
@@ -74,8 +72,6 @@ int pblk_recov_setup_rq(struct pblk *pblk, struct pblk_c_ctx *c_ctx,
 			struct pblk_rec_ctx *recovery, u64 *comp_bits,
 			unsigned int comp)
 {
-	struct nvm_tgt_dev *dev = pblk->dev;
-	int max_secs = nvm_max_phys_sects(dev);
 	struct nvm_rq *rec_rqd;
 	struct pblk_c_ctx *rec_ctx;
 	int nr_entries = c_ctx->nr_valid + c_ctx->nr_padded;
@@ -86,7 +82,7 @@ int pblk_recov_setup_rq(struct pblk *pblk, struct pblk_c_ctx *c_ctx,
 	/* Copy completion bitmap, but exclude the first X completed entries */
 	bitmap_shift_right((unsigned long int *)&rec_rqd->ppa_status,
 				(unsigned long int *)comp_bits,
-				comp, max_secs);
+				comp, NVM_MAX_VLBA);
 
 	/* Save the context for the entries that need to be re-written and
 	 * update current context with the completed entries.
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 8b243af8a949..e38d835b15b5 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -612,8 +612,6 @@ static struct nvm_dev_ops nvme_nvm_dev_ops = {
 	.destroy_dma_pool	= nvme_nvm_destroy_dma_pool,
 	.dev_dma_alloc		= nvme_nvm_dev_dma_alloc,
 	.dev_dma_free		= nvme_nvm_dev_dma_free,
-
-	.max_phys_sect		= 64,
 };
 
 static int nvme_nvm_submit_user_cmd(struct request_queue *q,
@@ -932,8 +930,7 @@ static ssize_t nvm_dev_attr_show_12(struct device *dev,
 	} else if (strcmp(attr->name, "media_capabilities") == 0) {
 		return scnprintf(page, PAGE_SIZE, "0x%08x\n", id->mccap);
 	} else if (strcmp(attr->name, "max_phys_secs") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n",
-				ndev->ops->max_phys_sect);
+		return scnprintf(page, PAGE_SIZE, "%u\n", NVM_MAX_VLBA);
 	} else {
 		return scnprintf(page,
 				 PAGE_SIZE,