nvme-print-stdout: add get feature pls mode print

This change required libnvme FEAT_PLS_MODE definition added.

Signed-off-by: Tokunori Ikegami <[email protected]>

Author: ikegami-t

nvme-print-stdout.c

@@ -4971,6 +4971,10 @@ static void stdout_feature_show_fields(enum nvme_features_id fid,
 	case NVME_FEAT_FID_SPINUP_CONTROL:
 		printf("\tSpinup control feature Enabled: %s\n", (result & 1) ? "True" : "False");
 		break;
+	case NVME_FEAT_FID_POWER_LOSS_SIGNAL:
+		printf("\tPower Loss Signaling Mode (PLSM): %s\n",
+		       nvme_pls_mode_to_string(NVME_GET(result, FEAT_PLS_MODE)));
+		break;
 	case NVME_FEAT_FID_ENH_CTRL_METADATA:
 	case NVME_FEAT_FID_CTRL_METADATA:
 	case NVME_FEAT_FID_NS_METADATA:

nvme-print.c

@@ -1349,6 +1349,22 @@ const char *nvme_time_scale_to_string(__u8 ts)
 	return "Reserved";
 }
 
+const char *nvme_pls_mode_to_string(__u8 mode)
+{
+	switch (mode) {
+	case 0:
+		return "not enabled";
+	case 1:
+		return "enabled with Emergency Power Fail";
+	case 2:
+		return "enabled with Forced Quiescence";
+	default:
+		break;
+	}
+
+	return "Reserved";
+}
+
 void nvme_feature_show(enum nvme_features_id fid, int sel, unsigned int result)
 {
 	nvme_print(show_feature, NORMAL, fid, sel, result);

nvme-print.h

@@ -313,6 +313,7 @@ const char *nvme_pel_rci_rcpit_to_string(enum nvme_pel_rci_rcpit rcpit);
 const char *nvme_pel_ehai_pit_to_string(enum nvme_pel_ehai_pit pit);
 const char *nvme_ssi_state_to_string(__u8 state);
 const char *nvme_time_scale_to_string(__u8 ts);
+const char *nvme_pls_mode_to_string(__u8 mode);
 
 void nvme_dev_full_path(nvme_ns_t n, char *path, size_t len);
 void nvme_generic_full_path(nvme_ns_t n, char *path, size_t len);