sector_t end; /* end is excluded */
};
-enum {
- TRANS_TGT_TO_DEV = 0x0,
- TRANS_DEV_TO_TGT = 0x1,
-};
-
static struct nvm_target *nvm_find_target(struct nvm_dev *dev, const char *name)
{
struct nvm_target *tgt;
err_queue:
blk_cleanup_queue(tqueue);
err_dev:
- kfree(tgt_dev);
+ nvm_remove_tgt_dev(tgt_dev);
err_t:
kfree(t);
err_reserve:
return -ENOMEM;
}
-static int nvm_map_to_dev(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
+static void nvm_map_to_dev(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
{
struct nvm_dev_map *dev_map = tgt_dev->map;
struct nvm_ch_map *ch_map = &dev_map->chnls[p->g.ch];
int lun_off = ch_map->lun_offs[p->g.lun];
- struct nvm_dev *dev = tgt_dev->parent;
- struct nvm_dev_map *dev_rmap = dev->rmap;
- struct nvm_ch_map *ch_rmap;
- int lun_roff;
p->g.ch += ch_map->ch_off;
p->g.lun += lun_off;
-
- ch_rmap = &dev_rmap->chnls[p->g.ch];
- lun_roff = ch_rmap->lun_offs[p->g.lun];
-
- if (unlikely(ch_rmap->ch_off < 0 || lun_roff < 0)) {
- pr_err("nvm: corrupted device partition table\n");
- return -EINVAL;
- }
-
- return 0;
}
-static int nvm_map_to_tgt(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
+static void nvm_map_to_tgt(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
{
struct nvm_dev *dev = tgt_dev->parent;
struct nvm_dev_map *dev_rmap = dev->rmap;
p->g.ch -= ch_rmap->ch_off;
p->g.lun -= lun_roff;
-
- return 0;
}
-static int nvm_trans_rq(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd,
- int flag)
+static void nvm_ppa_tgt_to_dev(struct nvm_tgt_dev *tgt_dev,
+ struct ppa_addr *ppa_list, int nr_ppas)
{
int i;
- int ret;
- if (rqd->nr_ppas == 1) {
- if (flag == TRANS_TGT_TO_DEV)
- return nvm_map_to_dev(tgt_dev, &rqd->ppa_addr);
- else
- return nvm_map_to_tgt(tgt_dev, &rqd->ppa_addr);
+ for (i = 0; i < nr_ppas; i++) {
+ nvm_map_to_dev(tgt_dev, &ppa_list[i]);
+ ppa_list[i] = generic_to_dev_addr(tgt_dev, ppa_list[i]);
}
+}
- for (i = 0; i < rqd->nr_ppas; i++) {
- if (flag == TRANS_TGT_TO_DEV)
- ret = nvm_map_to_dev(tgt_dev, &rqd->ppa_list[i]);
- else
- ret = nvm_map_to_tgt(tgt_dev, &rqd->ppa_list[i]);
+static void nvm_ppa_dev_to_tgt(struct nvm_tgt_dev *tgt_dev,
+ struct ppa_addr *ppa_list, int nr_ppas)
+{
+ int i;
- if (ret)
- break;
+ for (i = 0; i < nr_ppas; i++) {
+ ppa_list[i] = dev_to_generic_addr(tgt_dev, ppa_list[i]);
+ nvm_map_to_tgt(tgt_dev, &ppa_list[i]);
}
-
- return ret;
}
-static struct ppa_addr nvm_trans_ppa(struct nvm_tgt_dev *tgt_dev,
- struct ppa_addr p, int dir)
+static void nvm_rq_tgt_to_dev(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
{
- struct ppa_addr ppa = p;
+ if (rqd->nr_ppas == 1) {
+ nvm_ppa_tgt_to_dev(tgt_dev, &rqd->ppa_addr, 1);
+ return;
+ }
- if (dir == TRANS_TGT_TO_DEV)
- nvm_map_to_dev(tgt_dev, &ppa);
- else
- nvm_map_to_tgt(tgt_dev, &ppa);
+ nvm_ppa_tgt_to_dev(tgt_dev, rqd->ppa_list, rqd->nr_ppas);
+}
+
+static void nvm_rq_dev_to_tgt(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
+{
+ if (rqd->nr_ppas == 1) {
+ nvm_ppa_dev_to_tgt(tgt_dev, &rqd->ppa_addr, 1);
+ return;
+ }
- return ppa;
+ nvm_ppa_dev_to_tgt(tgt_dev, rqd->ppa_list, rqd->nr_ppas);
}
void nvm_part_to_tgt(struct nvm_dev *dev, sector_t *entries,
return NULL;
}
-static void nvm_tgt_generic_to_addr_mode(struct nvm_tgt_dev *tgt_dev,
- struct nvm_rq *rqd)
-{
- struct nvm_dev *dev = tgt_dev->parent;
- int i;
-
- if (rqd->nr_ppas > 1) {
- for (i = 0; i < rqd->nr_ppas; i++) {
- rqd->ppa_list[i] = nvm_trans_ppa(tgt_dev,
- rqd->ppa_list[i], TRANS_TGT_TO_DEV);
- rqd->ppa_list[i] = generic_to_dev_addr(dev,
- rqd->ppa_list[i]);
- }
- } else {
- rqd->ppa_addr = nvm_trans_ppa(tgt_dev, rqd->ppa_addr,
- TRANS_TGT_TO_DEV);
- rqd->ppa_addr = generic_to_dev_addr(dev, rqd->ppa_addr);
- }
-}
-
-int nvm_set_bb_tbl(struct nvm_dev *dev, struct ppa_addr *ppas, int nr_ppas,
- int type)
-{
- struct nvm_rq rqd;
- int ret;
-
- if (nr_ppas > dev->ops->max_phys_sect) {
- pr_err("nvm: unable to update all sysblocks atomically\n");
- return -EINVAL;
- }
-
- memset(&rqd, 0, sizeof(struct nvm_rq));
-
- nvm_set_rqd_ppalist(dev, &rqd, ppas, nr_ppas, 1);
- nvm_generic_to_addr_mode(dev, &rqd);
-
- ret = dev->ops->set_bb_tbl(dev, &rqd.ppa_addr, rqd.nr_ppas, type);
- nvm_free_rqd_ppalist(dev, &rqd);
- if (ret) {
- pr_err("nvm: sysblk failed bb mark\n");
- return -EINVAL;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(nvm_set_bb_tbl);
-
int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
int nr_ppas, int type)
{
memset(&rqd, 0, sizeof(struct nvm_rq));
nvm_set_rqd_ppalist(dev, &rqd, ppas, nr_ppas, 1);
- nvm_tgt_generic_to_addr_mode(tgt_dev, &rqd);
+ nvm_rq_tgt_to_dev(tgt_dev, &rqd);
ret = dev->ops->set_bb_tbl(dev, &rqd.ppa_addr, rqd.nr_ppas, type);
nvm_free_rqd_ppalist(dev, &rqd);
if (!dev->ops->submit_io)
return -ENODEV;
- /* Convert address space */
- nvm_generic_to_addr_mode(dev, rqd);
+ nvm_rq_tgt_to_dev(tgt_dev, rqd);
rqd->dev = tgt_dev;
return dev->ops->submit_io(dev, rqd);
}
EXPORT_SYMBOL(nvm_submit_io);
-int nvm_erase_blk(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p, int flags)
+int nvm_erase_blk(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas, int flags)
{
- /* Convert address space */
- nvm_map_to_dev(tgt_dev, p);
+ struct nvm_dev *dev = tgt_dev->parent;
+ struct nvm_rq rqd;
+ int ret;
+
+ if (!dev->ops->erase_block)
+ return 0;
- return nvm_erase_ppa(tgt_dev->parent, p, 1, flags);
+ nvm_map_to_dev(tgt_dev, ppas);
+
+ memset(&rqd, 0, sizeof(struct nvm_rq));
+
+ ret = nvm_set_rqd_ppalist(dev, &rqd, ppas, 1, 1);
+ if (ret)
+ return ret;
+
+ nvm_rq_tgt_to_dev(tgt_dev, &rqd);
+
+ rqd.flags = flags;
+
+ ret = dev->ops->erase_block(dev, &rqd);
+
+ nvm_free_rqd_ppalist(dev, &rqd);
+
+ return ret;
}
EXPORT_SYMBOL(nvm_erase_blk);
}
EXPORT_SYMBOL(nvm_put_area);
-void nvm_addr_to_generic_mode(struct nvm_dev *dev, struct nvm_rq *rqd)
-{
- int i;
-
- if (rqd->nr_ppas > 1) {
- for (i = 0; i < rqd->nr_ppas; i++)
- rqd->ppa_list[i] = dev_to_generic_addr(dev,
- rqd->ppa_list[i]);
- } else {
- rqd->ppa_addr = dev_to_generic_addr(dev, rqd->ppa_addr);
- }
-}
-EXPORT_SYMBOL(nvm_addr_to_generic_mode);
-
-void nvm_generic_to_addr_mode(struct nvm_dev *dev, struct nvm_rq *rqd)
-{
- int i;
-
- if (rqd->nr_ppas > 1) {
- for (i = 0; i < rqd->nr_ppas; i++)
- rqd->ppa_list[i] = generic_to_dev_addr(dev,
- rqd->ppa_list[i]);
- } else {
- rqd->ppa_addr = generic_to_dev_addr(dev, rqd->ppa_addr);
- }
-}
-EXPORT_SYMBOL(nvm_generic_to_addr_mode);
-
int nvm_set_rqd_ppalist(struct nvm_dev *dev, struct nvm_rq *rqd,
const struct ppa_addr *ppas, int nr_ppas, int vblk)
{
}
EXPORT_SYMBOL(nvm_free_rqd_ppalist);
-int nvm_erase_ppa(struct nvm_dev *dev, struct ppa_addr *ppas, int nr_ppas,
- int flags)
-{
- struct nvm_rq rqd;
- int ret;
-
- if (!dev->ops->erase_block)
- return 0;
-
- memset(&rqd, 0, sizeof(struct nvm_rq));
-
- ret = nvm_set_rqd_ppalist(dev, &rqd, ppas, nr_ppas, 1);
- if (ret)
- return ret;
-
- nvm_generic_to_addr_mode(dev, &rqd);
-
- rqd.flags = flags;
-
- ret = dev->ops->erase_block(dev, &rqd);
-
- nvm_free_rqd_ppalist(dev, &rqd);
-
- return ret;
-}
-EXPORT_SYMBOL(nvm_erase_ppa);
-
-void nvm_end_io(struct nvm_rq *rqd, int error)
+void nvm_end_io(struct nvm_rq *rqd)
{
struct nvm_tgt_dev *tgt_dev = rqd->dev;
- struct nvm_tgt_instance *ins = rqd->ins;
/* Convert address space */
if (tgt_dev)
- nvm_trans_rq(tgt_dev, rqd, TRANS_DEV_TO_TGT);
+ nvm_rq_dev_to_tgt(tgt_dev, rqd);
- rqd->error = error;
- ins->tt->end_io(rqd);
+ if (rqd->end_io)
+ rqd->end_io(rqd);
}
EXPORT_SYMBOL(nvm_end_io);
-static void nvm_end_io_sync(struct nvm_rq *rqd)
-{
- struct completion *waiting = rqd->wait;
-
- rqd->wait = NULL;
-
- complete(waiting);
-}
-
-static int __nvm_submit_ppa(struct nvm_dev *dev, struct nvm_rq *rqd, int opcode,
- int flags, void *buf, int len)
-{
- DECLARE_COMPLETION_ONSTACK(wait);
- struct bio *bio;
- int ret;
- unsigned long hang_check;
-
- bio = bio_map_kern(dev->q, buf, len, GFP_KERNEL);
- if (IS_ERR_OR_NULL(bio))
- return -ENOMEM;
-
- nvm_generic_to_addr_mode(dev, rqd);
-
- rqd->dev = NULL;
- rqd->opcode = opcode;
- rqd->flags = flags;
- rqd->bio = bio;
- rqd->wait = &wait;
- rqd->end_io = nvm_end_io_sync;
-
- ret = dev->ops->submit_io(dev, rqd);
- if (ret) {
- bio_put(bio);
- return ret;
- }
-
- /* Prevent hang_check timer from firing at us during very long I/O */
- hang_check = sysctl_hung_task_timeout_secs;
- if (hang_check)
- while (!wait_for_completion_io_timeout(&wait,
- hang_check * (HZ/2)))
- ;
- else
- wait_for_completion_io(&wait);
-
- return rqd->error;
-}
-
-/**
- * nvm_submit_ppa_list - submit user-defined ppa list to device. The user must
- * take to free ppa list if necessary.
- * @dev: device
- * @ppa_list: user created ppa_list
- * @nr_ppas: length of ppa_list
- * @opcode: device opcode
- * @flags: device flags
- * @buf: data buffer
- * @len: data buffer length
- */
-int nvm_submit_ppa_list(struct nvm_dev *dev, struct ppa_addr *ppa_list,
- int nr_ppas, int opcode, int flags, void *buf, int len)
-{
- struct nvm_rq rqd;
-
- if (dev->ops->max_phys_sect < nr_ppas)
- return -EINVAL;
-
- memset(&rqd, 0, sizeof(struct nvm_rq));
-
- rqd.nr_ppas = nr_ppas;
- if (nr_ppas > 1)
- rqd.ppa_list = ppa_list;
- else
- rqd.ppa_addr = ppa_list[0];
-
- return __nvm_submit_ppa(dev, &rqd, opcode, flags, buf, len);
-}
-EXPORT_SYMBOL(nvm_submit_ppa_list);
-
-/**
- * nvm_submit_ppa - submit PPAs to device. PPAs will automatically be unfolded
- * as single, dual, quad plane PPAs depending on device type.
- * @dev: device
- * @ppa: user created ppa_list
- * @nr_ppas: length of ppa_list
- * @opcode: device opcode
- * @flags: device flags
- * @buf: data buffer
- * @len: data buffer length
- */
-int nvm_submit_ppa(struct nvm_dev *dev, struct ppa_addr *ppa, int nr_ppas,
- int opcode, int flags, void *buf, int len)
-{
- struct nvm_rq rqd;
- int ret;
-
- memset(&rqd, 0, sizeof(struct nvm_rq));
- ret = nvm_set_rqd_ppalist(dev, &rqd, ppa, nr_ppas, 1);
- if (ret)
- return ret;
-
- ret = __nvm_submit_ppa(dev, &rqd, opcode, flags, buf, len);
-
- nvm_free_rqd_ppalist(dev, &rqd);
-
- return ret;
-}
-EXPORT_SYMBOL(nvm_submit_ppa);
-
/*
* folds a bad block list from its plane representation to its virtual
* block representation. The fold is done in place and reduced size is
}
EXPORT_SYMBOL(nvm_bb_tbl_fold);
-int nvm_get_bb_tbl(struct nvm_dev *dev, struct ppa_addr ppa, u8 *blks)
-{
- ppa = generic_to_dev_addr(dev, ppa);
-
- return dev->ops->get_bb_tbl(dev, ppa, blks);
-}
-EXPORT_SYMBOL(nvm_get_bb_tbl);
-
int nvm_get_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr ppa,
u8 *blks)
{
- ppa = nvm_trans_ppa(tgt_dev, ppa, TRANS_TGT_TO_DEV);
+ struct nvm_dev *dev = tgt_dev->parent;
- return nvm_get_bb_tbl(tgt_dev->parent, ppa, blks);
+ nvm_ppa_tgt_to_dev(tgt_dev, &ppa, 1);
+
+ return dev->ops->get_bb_tbl(dev, ppa, blks);
}
EXPORT_SYMBOL(nvm_get_tgt_bb_tbl);
static int nvm_core_init(struct nvm_dev *dev)
{
struct nvm_id *id = &dev->identity;
- struct nvm_id_group *grp = &id->groups[0];
+ struct nvm_id_group *grp = &id->grp;
struct nvm_geo *geo = &dev->geo;
int ret;
goto err;
}
- pr_debug("nvm: ver:%x nvm_vendor:%x groups:%u\n",
- dev->identity.ver_id, dev->identity.vmnt,
- dev->identity.cgrps);
+ pr_debug("nvm: ver:%x nvm_vendor:%x\n",
+ dev->identity.ver_id, dev->identity.vmnt);
if (dev->identity.ver_id != 1) {
pr_err("nvm: device not supported by kernel.");
goto err;
}
- if (dev->identity.cgrps != 1) {
- pr_err("nvm: only one group configuration supported.");
- goto err;
- }
-
ret = nvm_core_init(dev);
if (ret) {
pr_err("nvm: could not initialize core structures.\n");
projects / karo-tx-linux.git / blobdiff