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Subject[PATCH 13/19] lightnvm: make address conversions depend on generic device
Date
On address conversions, use the generic device, instead of the target
device. This allows to use conversions outside of the target's realm.

Signed-off-by: Javier González <javier@cnexlabs.com>
---
drivers/lightnvm/core.c | 4 ++--
include/linux/lightnvm.h | 20 ++++++++++----------
2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 92ea6e39dd64..fae5e8c6fcd0 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -588,7 +588,7 @@ static void nvm_ppa_tgt_to_dev(struct nvm_tgt_dev *tgt_dev,

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]);
+ ppa_list[i] = generic_to_dev_addr(tgt_dev->parent, ppa_list[i]);
}
}

@@ -598,7 +598,7 @@ static void nvm_ppa_dev_to_tgt(struct nvm_tgt_dev *tgt_dev,
int i;

for (i = 0; i < nr_ppas; i++) {
- ppa_list[i] = dev_to_generic_addr(tgt_dev, ppa_list[i]);
+ ppa_list[i] = dev_to_generic_addr(tgt_dev->parent, ppa_list[i]);
nvm_map_to_tgt(tgt_dev, &ppa_list[i]);
}
}
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 8cda1125c34a..2b909592568a 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -405,15 +405,15 @@ struct nvm_dev {
struct list_head targets;
};

-static inline struct ppa_addr generic_to_dev_addr(struct nvm_tgt_dev *tgt_dev,
+static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev,
struct ppa_addr r)
{
- struct nvm_geo *geo = &tgt_dev->geo;
+ struct nvm_geo *dev_geo = &dev->geo;
struct ppa_addr l;

- if (geo->c.version == NVM_OCSSD_SPEC_12) {
+ if (dev_geo->c.version == NVM_OCSSD_SPEC_12) {
struct nvm_addr_format_12 *ppaf =
- (struct nvm_addr_format_12 *)&geo->c.addrf;
+ (struct nvm_addr_format_12 *)&dev_geo->c.addrf;

l.ppa = ((u64)r.g.ch) << ppaf->ch_offset;
l.ppa |= ((u64)r.g.lun) << ppaf->lun_offset;
@@ -422,7 +422,7 @@ static inline struct ppa_addr generic_to_dev_addr(struct nvm_tgt_dev *tgt_dev,
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;
+ struct nvm_addr_format *lbaf = &dev_geo->c.addrf;

l.ppa = ((u64)r.m.grp) << lbaf->ch_offset;
l.ppa |= ((u64)r.m.pu) << lbaf->lun_offset;
@@ -433,17 +433,17 @@ static inline struct ppa_addr generic_to_dev_addr(struct nvm_tgt_dev *tgt_dev,
return l;
}

-static inline struct ppa_addr dev_to_generic_addr(struct nvm_tgt_dev *tgt_dev,
+static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev,
struct ppa_addr r)
{
- struct nvm_geo *geo = &tgt_dev->geo;
+ struct nvm_geo *dev_geo = &dev->geo;
struct ppa_addr l;

l.ppa = 0;

- if (geo->c.version == NVM_OCSSD_SPEC_12) {
+ if (dev_geo->c.version == NVM_OCSSD_SPEC_12) {
struct nvm_addr_format_12 *ppaf =
- (struct nvm_addr_format_12 *)&geo->c.addrf;
+ (struct nvm_addr_format_12 *)&dev_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;
@@ -452,7 +452,7 @@ static inline struct ppa_addr dev_to_generic_addr(struct nvm_tgt_dev *tgt_dev,
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;
+ struct nvm_addr_format *lbaf = &dev_geo->c.addrf;

l.m.grp = (r.ppa & lbaf->ch_mask) >> lbaf->ch_offset;
l.m.pu = (r.ppa & lbaf->lun_mask) >> lbaf->lun_offset;
--
2.7.4
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