On 02/21/2018 10:26 AM, Javier González wrote:
Complete the generic geometry structure with the maxoc and maxocpu
felds, present in the 2.0 spec.
Signed-off-by: Javier González <javier@xxxxxxxxxxxx>
---
drivers/nvme/host/lightnvm.c | 4 ++++
include/linux/lightnvm.h | 2 ++
2 files changed, 6 insertions(+)
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index cca32da05316..9c1f8225c4e1 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -318,6 +318,8 @@ static int nvme_nvm_setup_12(struct nvme_nvm_id12 *id,
dev_geo->c.ws_min = sec_per_pg;
dev_geo->c.ws_opt = sec_per_pg;
dev_geo->c.mw_cunits = 8; /* default to MLC safe values */
+ dev_geo->c.maxoc = dev_geo->all_luns; /* default to 1 chunk per LUN */
+ dev_geo->c.maxocpu = 1; /* default to 1 chunk per LUN */
One can't assume that it is 1 open chunk per lun. If you need this for
specific hardware, make a quirk for it.
dev_geo->c.mccap = le32_to_cpu(src->mccap);
@@ -405,6 +407,8 @@ static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id,
dev_geo->c.ws_min = le32_to_cpu(id->ws_min);
dev_geo->c.ws_opt = le32_to_cpu(id->ws_opt);
dev_geo->c.mw_cunits = le32_to_cpu(id->mw_cunits);
+ dev_geo->c.maxoc = le32_to_cpu(id->maxoc);
+ dev_geo->c.maxocpu = le32_to_cpu(id->maxocpu);
dev_geo->c.mccap = le32_to_cpu(id->mccap);
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index ccc5faa63cb7..e1c4292ea33d 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -215,6 +215,8 @@ struct nvm_common_geo {
u32 ws_min; /* minimum write size */
u32 ws_opt; /* optimal write size */
u32 mw_cunits; /* distance required for successful read */
+ u32 maxoc; /* maximum open chunks */
+ u32 maxocpu; /* maximum open chunks per parallel unit */
/* device capabilities */
u32 mccap;
