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Subject[PATCH 4/8] lightnvm: convert address based on spec. version
Date
Create the device ppa for both 1.2 and 2.0.

Signed-off-by: Javier González <javier@cnexlabs.com>
---
include/linux/lightnvm.h | 52 +++++++++++++++++++++++++++++++++---------------
1 file changed, 36 insertions(+), 16 deletions(-)

diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index e035ae4c9acc..1148b3f22b27 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -412,16 +412,26 @@ static inline struct ppa_addr generic_to_dev_addr(struct nvm_tgt_dev *tgt_dev,
struct ppa_addr r)
{
struct nvm_geo *geo = &tgt_dev->geo;
- struct nvm_addr_format_12 *ppaf =
- (struct nvm_addr_format_12 *)&geo->c.addrf;
struct ppa_addr l;

- l.ppa = ((u64)r.g.ch) << ppaf->ch_offset;
- l.ppa |= ((u64)r.g.lun) << ppaf->lun_offset;
- l.ppa |= ((u64)r.g.blk) << ppaf->blk_offset;
- l.ppa |= ((u64)r.g.pg) << ppaf->pg_offset;
- l.ppa |= ((u64)r.g.pl) << ppaf->pln_offset;
- l.ppa |= ((u64)r.g.sec) << ppaf->sec_offset;
+ if (geo->c.version == NVM_OCSSD_SPEC_12) {
+ struct nvm_addr_format_12 *ppaf =
+ (struct nvm_addr_format_12 *)&geo->c.addrf;
+
+ l.ppa = ((u64)r.g.ch) << ppaf->ch_offset;
+ l.ppa |= ((u64)r.g.lun) << ppaf->lun_offset;
+ l.ppa |= ((u64)r.g.blk) << ppaf->blk_offset;
+ l.ppa |= ((u64)r.g.pg) << ppaf->pg_offset;
+ l.ppa |= ((u64)r.g.pl) << ppaf->pln_offset;
+ l.ppa |= ((u64)r.g.sec) << ppaf->sec_offset;
+ } else {
+ struct nvm_addr_format *lbaf = &geo->c.addrf;
+
+ l.ppa = ((u64)r.m.ch) << lbaf->ch_offset;
+ l.ppa |= ((u64)r.m.lun) << lbaf->lun_offset;
+ l.ppa |= ((u64)r.m.chk) << lbaf->chk_offset;
+ l.ppa |= ((u64)r.m.sec) << lbaf->sec_offset;
+ }

return l;
}
@@ -430,18 +440,28 @@ static inline struct ppa_addr dev_to_generic_addr(struct nvm_tgt_dev *tgt_dev,
struct ppa_addr r)
{
struct nvm_geo *geo = &tgt_dev->geo;
- struct nvm_addr_format_12 *ppaf =
- (struct nvm_addr_format_12 *)&geo->c.addrf;
struct ppa_addr l;

l.ppa = 0;

- l.g.ch = (r.ppa & ppaf->ch_mask) >> ppaf->ch_offset;
- l.g.lun = (r.ppa & ppaf->lun_mask) >> ppaf->lun_offset;
- l.g.blk = (r.ppa & ppaf->blk_mask) >> ppaf->blk_offset;
- l.g.pg = (r.ppa & ppaf->pg_mask) >> ppaf->pg_offset;
- l.g.pl = (r.ppa & ppaf->pln_mask) >> ppaf->pln_offset;
- l.g.sec = (r.ppa & ppaf->sec_mask) >> ppaf->sec_offset;
+ if (geo->c.version == NVM_OCSSD_SPEC_12) {
+ struct nvm_addr_format_12 *ppaf =
+ (struct nvm_addr_format_12 *)&geo->c.addrf;
+
+ l.g.ch = (r.ppa & ppaf->ch_mask) >> ppaf->ch_offset;
+ l.g.lun = (r.ppa & ppaf->lun_mask) >> ppaf->lun_offset;
+ l.g.blk = (r.ppa & ppaf->blk_mask) >> ppaf->blk_offset;
+ l.g.pg = (r.ppa & ppaf->pg_mask) >> ppaf->pg_offset;
+ l.g.pl = (r.ppa & ppaf->pln_mask) >> ppaf->pln_offset;
+ l.g.sec = (r.ppa & ppaf->sec_mask) >> ppaf->sec_offset;
+ } else {
+ struct nvm_addr_format *lbaf = &geo->c.addrf;
+
+ l.m.ch = (r.ppa & lbaf->ch_mask) >> lbaf->ch_offset;
+ l.m.lun = (r.ppa & lbaf->lun_mask) >> lbaf->lun_offset;
+ l.m.chk = (r.ppa & lbaf->chk_mask) >> lbaf->chk_offset;
+ l.m.sec = (r.ppa & lbaf->sec_mask) >> lbaf->sec_offset;
+ }

return l;
}
--
2.7.4
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