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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
commit863981e96738983919de841ec669e157e6bdaeb0 (patch)
treed6d89a12e7eb8017837c057935a2271290907f76 /drivers/lightnvm/gennvm.c
parent8dec7c70575785729a6a9e6719a955e9c545bcab (diff)
Linux-libre 4.7.1-gnupck-4.7.1-gnu
Diffstat (limited to 'drivers/lightnvm/gennvm.c')
-rw-r--r--drivers/lightnvm/gennvm.c100
1 files changed, 53 insertions, 47 deletions
diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c
index 72e124a39..ec9fb6876 100644
--- a/drivers/lightnvm/gennvm.c
+++ b/drivers/lightnvm/gennvm.c
@@ -129,27 +129,25 @@ static int gennvm_luns_init(struct nvm_dev *dev, struct gen_nvm *gn)
return 0;
}
-static int gennvm_block_bb(struct ppa_addr ppa, int nr_blocks, u8 *blks,
- void *private)
+static int gennvm_block_bb(struct gen_nvm *gn, struct ppa_addr ppa,
+ u8 *blks, int nr_blks)
{
- struct gen_nvm *gn = private;
struct nvm_dev *dev = gn->dev;
struct gen_lun *lun;
struct nvm_block *blk;
int i;
+ nr_blks = nvm_bb_tbl_fold(dev, blks, nr_blks);
+ if (nr_blks < 0)
+ return nr_blks;
+
lun = &gn->luns[(dev->luns_per_chnl * ppa.g.ch) + ppa.g.lun];
- for (i = 0; i < nr_blocks; i++) {
+ for (i = 0; i < nr_blks; i++) {
if (blks[i] == 0)
continue;
blk = &lun->vlun.blocks[i];
- if (!blk) {
- pr_err("gennvm: BB data is out of bounds.\n");
- return -EINVAL;
- }
-
list_move_tail(&blk->list, &lun->bb_list);
lun->vlun.nr_bad_blocks++;
lun->vlun.nr_free_blocks--;
@@ -216,13 +214,21 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn)
struct gen_lun *lun;
struct nvm_block *block;
sector_t lun_iter, blk_iter, cur_block_id = 0;
- int ret;
+ int ret, nr_blks;
+ u8 *blks;
+
+ nr_blks = dev->blks_per_lun * dev->plane_mode;
+ blks = kmalloc(nr_blks, GFP_KERNEL);
+ if (!blks)
+ return -ENOMEM;
gennvm_for_each_lun(gn, lun, lun_iter) {
lun->vlun.blocks = vzalloc(sizeof(struct nvm_block) *
dev->blks_per_lun);
- if (!lun->vlun.blocks)
+ if (!lun->vlun.blocks) {
+ kfree(blks);
return -ENOMEM;
+ }
for (blk_iter = 0; blk_iter < dev->blks_per_lun; blk_iter++) {
block = &lun->vlun.blocks[blk_iter];
@@ -246,14 +252,15 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn)
ppa.ppa = 0;
ppa.g.ch = lun->vlun.chnl_id;
- ppa.g.lun = lun->vlun.id;
- ppa = generic_to_dev_addr(dev, ppa);
+ ppa.g.lun = lun->vlun.lun_id;
+
+ ret = nvm_get_bb_tbl(dev, ppa, blks);
+ if (ret)
+ pr_err("gennvm: could not get BB table\n");
- ret = dev->ops->get_bb_tbl(dev, ppa,
- dev->blks_per_lun,
- gennvm_block_bb, gn);
+ ret = gennvm_block_bb(gn, ppa, blks, nr_blks);
if (ret)
- pr_err("gennvm: could not read BB table\n");
+ pr_err("gennvm: BB table map failed\n");
}
}
@@ -266,6 +273,7 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn)
}
}
+ kfree(blks);
return 0;
}
@@ -399,64 +407,60 @@ static void gennvm_put_blk(struct nvm_dev *dev, struct nvm_block *blk)
spin_unlock(&vlun->lock);
}
-static void gennvm_blk_set_type(struct nvm_dev *dev, struct ppa_addr *ppa,
- int type)
+static void gennvm_mark_blk(struct nvm_dev *dev, struct ppa_addr ppa, int type)
{
struct gen_nvm *gn = dev->mp;
struct gen_lun *lun;
struct nvm_block *blk;
- if (unlikely(ppa->g.ch > dev->nr_chnls ||
- ppa->g.lun > dev->luns_per_chnl ||
- ppa->g.blk > dev->blks_per_lun)) {
+ pr_debug("gennvm: ppa (ch: %u lun: %u blk: %u pg: %u) -> %u\n",
+ ppa.g.ch, ppa.g.lun, ppa.g.blk, ppa.g.pg, type);
+
+ if (unlikely(ppa.g.ch > dev->nr_chnls ||
+ ppa.g.lun > dev->luns_per_chnl ||
+ ppa.g.blk > dev->blks_per_lun)) {
WARN_ON_ONCE(1);
pr_err("gennvm: ppa broken (ch: %u > %u lun: %u > %u blk: %u > %u",
- ppa->g.ch, dev->nr_chnls,
- ppa->g.lun, dev->luns_per_chnl,
- ppa->g.blk, dev->blks_per_lun);
+ ppa.g.ch, dev->nr_chnls,
+ ppa.g.lun, dev->luns_per_chnl,
+ ppa.g.blk, dev->blks_per_lun);
return;
}
- lun = &gn->luns[ppa->g.lun * ppa->g.ch];
- blk = &lun->vlun.blocks[ppa->g.blk];
+ lun = &gn->luns[ppa.g.lun * ppa.g.ch];
+ blk = &lun->vlun.blocks[ppa.g.blk];
/* will be moved to bb list on put_blk from target */
blk->state = type;
}
-/* mark block bad. It is expected the target recover from the error. */
+/*
+ * mark block bad in gennvm. It is expected that the target recovers separately
+ */
static void gennvm_mark_blk_bad(struct nvm_dev *dev, struct nvm_rq *rqd)
{
- int i;
-
- if (!dev->ops->set_bb_tbl)
- return;
-
- if (dev->ops->set_bb_tbl(dev, rqd, 1))
- return;
+ int bit = -1;
+ int max_secs = dev->ops->max_phys_sect;
+ void *comp_bits = &rqd->ppa_status;
nvm_addr_to_generic_mode(dev, rqd);
/* look up blocks and mark them as bad */
- if (rqd->nr_pages > 1)
- for (i = 0; i < rqd->nr_pages; i++)
- gennvm_blk_set_type(dev, &rqd->ppa_list[i],
- NVM_BLK_ST_BAD);
- else
- gennvm_blk_set_type(dev, &rqd->ppa_addr, NVM_BLK_ST_BAD);
+ if (rqd->nr_ppas == 1) {
+ gennvm_mark_blk(dev, rqd->ppa_addr, NVM_BLK_ST_BAD);
+ return;
+ }
+
+ while ((bit = find_next_bit(comp_bits, max_secs, bit + 1)) < max_secs)
+ gennvm_mark_blk(dev, rqd->ppa_list[bit], NVM_BLK_ST_BAD);
}
static void gennvm_end_io(struct nvm_rq *rqd)
{
struct nvm_tgt_instance *ins = rqd->ins;
- switch (rqd->error) {
- case NVM_RSP_SUCCESS:
- case NVM_RSP_ERR_EMPTYPAGE:
- break;
- case NVM_RSP_ERR_FAILWRITE:
+ if (rqd->error == NVM_RSP_ERR_FAILWRITE)
gennvm_mark_blk_bad(rqd->dev, rqd);
- }
ins->tt->end_io(rqd);
}
@@ -539,6 +543,8 @@ static struct nvmm_type gennvm = {
.submit_io = gennvm_submit_io,
.erase_blk = gennvm_erase_blk,
+ .mark_blk = gennvm_mark_blk,
+
.get_lun = gennvm_get_lun,
.reserve_lun = gennvm_reserve_lun,
.release_lun = gennvm_release_lun,