[PATCH 04/15] lightnvm: add shorten OCSSD version in geo

From: Javier GonzÃlez
Date: Wed Feb 28 2018 - 10:50:06 EST


Create a shorten version to use in the generic geometry.

Signed-off-by: Javier GonzÃlez <javier@xxxxxxxxxxxx>
---
drivers/nvme/host/lightnvm.c | 6 ++++++
include/linux/lightnvm.h | 8 ++++++++
2 files changed, 14 insertions(+)

diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index a600e70b6e6b..85f336a79cda 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -299,6 +299,9 @@ static int nvme_nvm_setup_12(struct nvme_nvm_id12 *id,
geo->major_ver_id = id->ver_id;
geo->minor_ver_id = 2;

+ /* Set compacted version for upper layers */
+ geo->version = NVM_OCSSD_SPEC_12;
+
geo->nr_chnls = src->num_ch;
geo->nr_luns = src->num_lun;
geo->all_luns = geo->nr_chnls * geo->nr_luns;
@@ -385,6 +388,9 @@ static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id,
geo->major_ver_id = id->mjr;
geo->minor_ver_id = id->mnr;

+ /* Set compacted version for upper layers */
+ geo->version = NVM_OCSSD_SPEC_20;
+
if (!(geo->major_ver_id == 2 && geo->minor_ver_id == 0)) {
pr_err("nvm: OCSSD version not supported (v%d.%d)\n",
geo->major_ver_id, geo->minor_ver_id);
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 4b2ecbf45fd9..b8bc158a2472 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -23,6 +23,11 @@ enum {
#define NVM_LUN_BITS (8)
#define NVM_CH_BITS (7)

+enum {
+ NVM_OCSSD_SPEC_12 = 12,
+ NVM_OCSSD_SPEC_20 = 20,
+};
+
struct ppa_addr {
/* Generic structure for all addresses */
union {
@@ -266,6 +271,9 @@ struct nvm_geo {
u8 major_ver_id;
u8 minor_ver_id;

+ /* kernel short version */
+ u8 version;
+
/* instance specific geometry */
int nr_chnls;
int nr_luns; /* per channel */
--
2.7.4