plugins/ocp: Add DSSD Power state feature(FID: C7h)

Signed-off-by: Arunpandian J <arun.j@samsung.com>

diff --git a/plugins/ocp/ocp-nvme.c b/plugins/ocp/ocp-nvme.c
index edf75fc34f0d5debc37825f8df843176a40ac17c..fdb6b5047f2b088bb4ae0ca15ac16f0c5e9c2815 100644 (file)
--- a/plugins/ocp/ocp-nvme.c
+++ b/plugins/ocp/ocp-nvme.c
@@ -1863,6 +1863,103 @@ static int ocp_device_capabilities_log(int argc, char **argv, struct command *cm
        return ret;
 }
 
+///////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+/// DSSD Power State (Feature Identifier C7h) Set Feature
+
+static int set_dssd_power_state(struct nvme_dev *dev, const __u32 nsid,
+                               const __u8 fid, __u8 power_state, bool save,
+                               bool uuid)
+{
+       __u32 result;
+       int err;
+       int uuid_index = 0;
+
+       if (uuid) {
+               /* OCP 2.0 requires UUID index support */
+               err = ocp_get_uuid_index(dev, &uuid_index);
+               if (err || !uuid_index) {
+                       nvme_show_error("ERROR: No OCP UUID index found");
+                       return err;
+               }
+       }
+
+       struct nvme_set_features_args args = {
+               .args_size = sizeof(args),
+               .fd = dev_fd(dev),
+               .fid = fid,
+               .nsid = nsid,
+               .cdw11 = power_state,
+               .cdw12 = 0,
+               .save = save,
+               .uuidx = uuid_index,
+               .cdw15 = 0,
+               .data_len = 0,
+               .data = NULL,
+               .timeout = NVME_DEFAULT_IOCTL_TIMEOUT,
+               .result = &result,
+       };
+
+       err = nvme_set_features(&args);
+       if (err > 0) {
+               nvme_show_status(err);
+       } else if (err < 0) {
+               nvme_show_perror("Define DSSD Power State");
+               fprintf(stderr, "Command failed while parsing.\n");
+       } else {
+               printf("Successfully set DSSD Power State (feature: 0xC7) to below values\n");
+               printf("DSSD Power State: 0x%x\n", power_state);
+               printf("Save bit Value: 0x%x\n", save);
+       }
+
+       return err;
+}
+
+static int set_dssd_power_state_feature(int argc, char **argv, struct command *cmd,
+                                                                               struct plugin *plugin)
+{
+       const char *desc = "Define DSSD Power State (Feature Identifier C7h) Set Feature.";
+       const char *power_state = "DSSD Power State to set in watts";
+       const char *save = "Specifies that the controller shall save the attribute";
+       const __u32 nsid = 0;
+       const __u8 fid = 0xC7;
+       struct nvme_dev *dev;
+       int err;
+
+       struct config {
+               __u8 power_state;
+               bool save;
+       };
+
+       struct config cfg = {
+               .power_state = 0,
+               .save = false,
+       };
+
+       OPT_ARGS(opts) = {
+               OPT_BYTE("power-state", 'p', &cfg.power_state, power_state),
+               OPT_FLAG("save", 's', &cfg.save, save),
+               OPT_FLAG("no-uuid", 'n', NULL,
+                        "Skip UUID index search (UUID index not required for OCP 1.0)"),
+               OPT_END()
+       };
+
+       err = parse_and_open(&dev, argc, argv, desc, opts);
+       if (err)
+               return err;
+
+       if (argconfig_parse_seen(opts, "power state"))
+               err = set_dssd_power_state(dev, nsid, fid, cfg.power_state,
+                                              cfg.save,
+                                              !argconfig_parse_seen(opts, "no-uuid"));
+
+       dev_close(dev);
+
+       return err;
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////

diff --git a/plugins/ocp/ocp-nvme.h b/plugins/ocp/ocp-nvme.h
index 74dd0ef7bbbd3f09a96717e7ec075cdcd54a15e3..18522945578cd8b1af0d1aafc1daeba2842153b4 100644 (file)
--- a/plugins/ocp/ocp-nvme.h
+++ b/plugins/ocp/ocp-nvme.h
@@ -26,6 +26,7 @@ PLUGIN(NAME("ocp", "OCP cloud SSD extensions", NVME_VERSION),
                ENTRY("unsupported-reqs-log", "Get Unsupported Requirements Log Page", ocp_unsupported_requirements_log)
                ENTRY("error-recovery-log", "Retrieve Error Recovery Log Page", ocp_error_recovery_log)
                ENTRY("device-capability-log", "Get Device capabilities Requirements Log Page", ocp_device_capabilities_log)
+               ENTRY("set-dssd-power-state-feature", "Get Device capabilities Requirements Log Page", set_dssd_power_state_feature)
        )
 );