#include <linux/sched/sysctl.h>
#include <uapi/linux/lightnvm.h>
-static LIST_HEAD(nvm_targets);
+static LIST_HEAD(nvm_tgt_types);
static LIST_HEAD(nvm_mgrs);
static LIST_HEAD(nvm_devices);
+static LIST_HEAD(nvm_targets);
static DECLARE_RWSEM(nvm_lock);
+static struct nvm_target *nvm_find_target(const char *name)
+{
+ struct nvm_target *tgt;
+
+ list_for_each_entry(tgt, &nvm_targets, list)
+ if (!strcmp(name, tgt->disk->disk_name))
+ return tgt;
+
+ return NULL;
+}
+
static struct nvm_tgt_type *nvm_find_target_type(const char *name)
{
struct nvm_tgt_type *tt;
- list_for_each_entry(tt, &nvm_targets, list)
+ list_for_each_entry(tt, &nvm_tgt_types, list)
if (!strcmp(name, tt->name))
return tt;
return NULL;
}
-int nvm_register_target(struct nvm_tgt_type *tt)
+int nvm_register_tgt_type(struct nvm_tgt_type *tt)
{
int ret = 0;
if (nvm_find_target_type(tt->name))
ret = -EEXIST;
else
- list_add(&tt->list, &nvm_targets);
+ list_add(&tt->list, &nvm_tgt_types);
up_write(&nvm_lock);
return ret;
}
-EXPORT_SYMBOL(nvm_register_target);
+EXPORT_SYMBOL(nvm_register_tgt_type);
-void nvm_unregister_target(struct nvm_tgt_type *tt)
+void nvm_unregister_tgt_type(struct nvm_tgt_type *tt)
{
if (!tt)
return;
list_del(&tt->list);
up_write(&nvm_lock);
}
-EXPORT_SYMBOL(nvm_unregister_target);
+EXPORT_SYMBOL(nvm_unregister_tgt_type);
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, dev->ppalist_pool, mem_flags,
+ return dev->ops->dev_dma_alloc(dev, dev->dma_pool, mem_flags,
dma_handler);
}
EXPORT_SYMBOL(nvm_dev_dma_alloc);
-void nvm_dev_dma_free(struct nvm_dev *dev, void *ppa_list,
+void nvm_dev_dma_free(struct nvm_dev *dev, void *addr,
dma_addr_t dma_handler)
{
- dev->ops->dev_dma_free(dev->ppalist_pool, ppa_list, dma_handler);
+ dev->ops->dev_dma_free(dev->dma_pool, addr, dma_handler);
}
EXPORT_SYMBOL(nvm_dev_dma_free);
EXPORT_SYMBOL(nvm_generic_to_addr_mode);
int nvm_set_rqd_ppalist(struct nvm_dev *dev, struct nvm_rq *rqd,
- struct ppa_addr *ppas, int nr_ppas)
+ struct ppa_addr *ppas, int nr_ppas, int vblk)
{
int i, plane_cnt, pl_idx;
- if (dev->plane_mode == NVM_PLANE_SINGLE && nr_ppas == 1) {
- rqd->nr_pages = 1;
+ if ((!vblk || dev->plane_mode == NVM_PLANE_SINGLE) && nr_ppas == 1) {
+ rqd->nr_pages = nr_ppas;
rqd->ppa_addr = ppas[0];
return 0;
}
- plane_cnt = dev->plane_mode;
- rqd->nr_pages = plane_cnt * nr_ppas;
-
- if (dev->ops->max_phys_sect < rqd->nr_pages)
- return -EINVAL;
-
+ rqd->nr_pages = nr_ppas;
rqd->ppa_list = nvm_dev_dma_alloc(dev, GFP_KERNEL, &rqd->dma_ppa_list);
if (!rqd->ppa_list) {
pr_err("nvm: failed to allocate dma memory\n");
return -ENOMEM;
}
- for (pl_idx = 0; pl_idx < plane_cnt; pl_idx++) {
+ if (!vblk) {
+ for (i = 0; i < nr_ppas; i++)
+ rqd->ppa_list[i] = ppas[i];
+ } else {
+ plane_cnt = dev->plane_mode;
+ rqd->nr_pages *= plane_cnt;
+
for (i = 0; i < nr_ppas; i++) {
- ppas[i].g.pl = pl_idx;
- rqd->ppa_list[(pl_idx * nr_ppas) + i] = ppas[i];
+ for (pl_idx = 0; pl_idx < plane_cnt; pl_idx++) {
+ ppas[i].g.pl = pl_idx;
+ rqd->ppa_list[(pl_idx * nr_ppas) + i] = ppas[i];
+ }
}
}
memset(&rqd, 0, sizeof(struct nvm_rq));
- ret = nvm_set_rqd_ppalist(dev, &rqd, ppas, nr_ppas);
+ ret = nvm_set_rqd_ppalist(dev, &rqd, ppas, nr_ppas, 1);
if (ret)
return ret;
complete(waiting);
}
-int nvm_submit_ppa(struct nvm_dev *dev, struct ppa_addr *ppa, int nr_ppas,
- int opcode, int flags, void *buf, int len)
+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 nvm_rq rqd;
struct bio *bio;
int ret;
unsigned long hang_check;
if (IS_ERR_OR_NULL(bio))
return -ENOMEM;
- memset(&rqd, 0, sizeof(struct nvm_rq));
- ret = nvm_set_rqd_ppalist(dev, &rqd, ppa, nr_ppas);
+ nvm_generic_to_addr_mode(dev, rqd);
+
+ rqd->dev = dev;
+ 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;
}
- rqd.opcode = opcode;
- rqd.bio = bio;
- rqd.wait = &wait;
- rqd.dev = dev;
- rqd.end_io = nvm_end_io_sync;
- rqd.flags = flags;
- nvm_generic_to_addr_mode(dev, &rqd);
-
- ret = dev->ops->submit_io(dev, &rqd);
-
/* Prevent hang_check timer from firing at us during very long I/O */
hang_check = sysctl_hung_task_timeout_secs;
if (hang_check)
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_pages = 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 rqd.error;
+ 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
+ * returned.
+ *
+ * If any of the planes status are bad or grown bad block, the virtual block
+ * is marked bad. If not bad, the first plane state acts as the block state.
+ */
+int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
+{
+ int blk, offset, pl, blktype;
+
+ if (nr_blks != dev->blks_per_lun * dev->plane_mode)
+ return -EINVAL;
+
+ for (blk = 0; blk < dev->blks_per_lun; blk++) {
+ offset = blk * dev->plane_mode;
+ blktype = blks[offset];
+
+ /* Bad blocks on any planes take precedence over other types */
+ for (pl = 0; pl < dev->plane_mode; pl++) {
+ if (blks[offset + pl] &
+ (NVM_BLK_T_BAD|NVM_BLK_T_GRWN_BAD)) {
+ blktype = blks[offset + pl];
+ break;
+ }
+ }
+
+ blks[blk] = blktype;
+ }
+
+ return dev->blks_per_lun;
+}
+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);
+
static int nvm_init_slc_tbl(struct nvm_dev *dev, struct nvm_id_group *grp)
{
int i;
{
struct nvm_id *id = &dev->identity;
struct nvm_id_group *grp = &id->groups[0];
+ int ret;
/* device values */
dev->nr_chnls = grp->num_ch;
dev->pgs_per_blk = grp->num_pg;
dev->blks_per_lun = grp->num_blk;
dev->nr_planes = grp->num_pln;
+ dev->fpg_size = grp->fpg_sz;
+ dev->pfpg_size = grp->fpg_sz * grp->num_pln;
dev->sec_size = grp->csecs;
dev->oob_size = grp->sos;
dev->sec_per_pg = grp->fpg_sz / grp->csecs;
dev->plane_mode = NVM_PLANE_SINGLE;
dev->max_rq_size = dev->ops->max_phys_sect * dev->sec_size;
- if (grp->mtype != 0) {
- pr_err("nvm: memory type not supported\n");
- return -EINVAL;
- }
-
- switch (grp->fmtype) {
- case NVM_ID_FMTYPE_SLC:
- if (nvm_init_slc_tbl(dev, grp))
- return -ENOMEM;
- break;
- case NVM_ID_FMTYPE_MLC:
- if (nvm_init_mlc_tbl(dev, grp))
- return -ENOMEM;
- break;
- default:
- pr_err("nvm: flash type not supported\n");
- return -EINVAL;
- }
-
- if (!dev->lps_per_blk)
- pr_info("nvm: lower page programming table missing\n");
-
if (grp->mpos & 0x020202)
dev->plane_mode = NVM_PLANE_DOUBLE;
if (grp->mpos & 0x040404)
dev->plane_mode = NVM_PLANE_QUAD;
+ if (grp->mtype != 0) {
+ pr_err("nvm: memory type not supported\n");
+ return -EINVAL;
+ }
+
/* calculated values */
dev->sec_per_pl = dev->sec_per_pg * dev->nr_planes;
dev->sec_per_blk = dev->sec_per_pl * dev->pgs_per_blk;
sizeof(unsigned long), GFP_KERNEL);
if (!dev->lun_map)
return -ENOMEM;
- INIT_LIST_HEAD(&dev->online_targets);
+
+ switch (grp->fmtype) {
+ case NVM_ID_FMTYPE_SLC:
+ if (nvm_init_slc_tbl(dev, grp)) {
+ ret = -ENOMEM;
+ goto err_fmtype;
+ }
+ break;
+ case NVM_ID_FMTYPE_MLC:
+ if (nvm_init_mlc_tbl(dev, grp)) {
+ ret = -ENOMEM;
+ goto err_fmtype;
+ }
+ break;
+ default:
+ pr_err("nvm: flash type not supported\n");
+ ret = -EINVAL;
+ goto err_fmtype;
+ }
+
mutex_init(&dev->mlock);
spin_lock_init(&dev->lock);
return 0;
+err_fmtype:
+ kfree(dev->lun_map);
+ return ret;
}
static void nvm_free(struct nvm_dev *dev)
dev->mt->unregister_mgr(dev);
kfree(dev->lptbl);
+ kfree(dev->lun_map);
}
static int nvm_init(struct nvm_dev *dev)
static void nvm_exit(struct nvm_dev *dev)
{
- if (dev->ppalist_pool)
- dev->ops->destroy_dma_pool(dev->ppalist_pool);
+ if (dev->dma_pool)
+ dev->ops->destroy_dma_pool(dev->dma_pool);
nvm_free(dev);
pr_info("nvm: successfully unloaded\n");
}
if (dev->ops->max_phys_sect > 1) {
- dev->ppalist_pool = dev->ops->create_dma_pool(dev, "ppalist");
- if (!dev->ppalist_pool) {
- pr_err("nvm: could not create ppa pool\n");
+ dev->dma_pool = dev->ops->create_dma_pool(dev, "ppalist");
+ if (!dev->dma_pool) {
+ pr_err("nvm: could not create dma pool\n");
ret = -ENOMEM;
goto err_init;
}
up_write(&nvm_lock);
nvm_exit(dev);
- kfree(dev->lun_map);
kfree(dev);
}
EXPORT_SYMBOL(nvm_unregister);
return -EINVAL;
}
- list_for_each_entry(t, &dev->online_targets, list) {
- if (!strcmp(create->tgtname, t->disk->disk_name)) {
- pr_err("nvm: target name already exists.\n");
- up_write(&nvm_lock);
- return -EINVAL;
- }
+ t = nvm_find_target(create->tgtname);
+ if (t) {
+ pr_err("nvm: target name already exists.\n");
+ up_write(&nvm_lock);
+ return -EINVAL;
}
up_write(&nvm_lock);
t->disk = tdisk;
down_write(&nvm_lock);
- list_add_tail(&t->list, &dev->online_targets);
+ list_add_tail(&t->list, &nvm_targets);
up_write(&nvm_lock);
return 0;
static int __nvm_configure_remove(struct nvm_ioctl_remove *remove)
{
- struct nvm_target *t = NULL;
- struct nvm_dev *dev;
- int ret = -1;
+ struct nvm_target *t;
down_write(&nvm_lock);
- list_for_each_entry(dev, &nvm_devices, devices)
- list_for_each_entry(t, &dev->online_targets, list) {
- if (!strcmp(remove->tgtname, t->disk->disk_name)) {
- nvm_remove_target(t);
- ret = 0;
- break;
- }
- }
- up_write(&nvm_lock);
-
- if (ret) {
+ t = nvm_find_target(remove->tgtname);
+ if (!t) {
pr_err("nvm: target \"%s\" doesn't exist.\n", remove->tgtname);
+ up_write(&nvm_lock);
return -EINVAL;
}
+ nvm_remove_target(t);
+ up_write(&nvm_lock);
+
return 0;
}
info->version[2] = NVM_VERSION_PATCH;
down_write(&nvm_lock);
- list_for_each_entry(tt, &nvm_targets, list) {
+ list_for_each_entry(tt, &nvm_tgt_types, list) {
struct nvm_ioctl_info_tgt *tgt = &info->tgts[tgt_iter];
tgt->version[0] = tt->version[0];
projects / deliverable / linux.git / blobdiff