From: Tokunori Ikegami <ikegami.t@gmail.com>
Date: Sat, 11 Jan 2025 15:21:58 +0000 (+0900)
Subject: nvme-print-stdout: add NVMe 2.1 identify power state descriptor fields
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=622a96d0d684be05c0f07874a05e731708da5f5b;p=users%2Fsagi%2Fnvme-cli.git

nvme-print-stdout: add NVMe 2.1 identify power state descriptor fields

Since power loss signaling function introduced by NVMe 2.1.

Signed-off-by: Tokunori Ikegami <ikegami.t@gmail.com>
---

diff --git a/nvme-print-stdout.c b/nvme-print-stdout.c
index 484696a2..63117864 100644
--- a/nvme-print-stdout.c
+++ b/nvme-print-stdout.c
@@ -3020,6 +3020,27 @@ static void print_ps_power_and_scale(__le16 ctr_power, __u8 scale)
 	}
 }
 
+static void print_psd_time(const char *desc, __u8 time, __u8 ts)
+{
+	int width = 12 + strlen(desc);
+	char value[STR_LEN] = { 0 };
+
+	switch (time) {
+	case 0:
+		snprintf(value, sizeof(value), "-");
+		break;
+	case 1 ... 99:
+		snprintf(value, sizeof(value), "%d (unit: %s)", time,
+			 nvme_time_scale_to_string(ts));
+		break;
+	default:
+		snprintf(value, sizeof(value), "reserved");
+		break;
+	}
+
+	printf("%*s: %s\n", width, desc, value);
+}
+
 static void stdout_id_ctrl_power(struct nvme_id_ctrl *ctrl)
 {
 	int i;
@@ -3051,7 +3072,12 @@ static void stdout_id_ctrl_power(struct nvme_id_ctrl *ctrl)
 		printf("\n            active_power_workload:");
 		print_psd_workload(ctrl->psd[i].apws);
 		printf("\n");
-
+		print_psd_time("emergency power fail recovery time", ctrl->psd[i].epfrt,
+			       ctrl->psd[i].epfr_fqv_ts & 0xf);
+		print_psd_time("forced quiescence vault time", ctrl->psd[i].fqvt,
+			       ctrl->psd[i].epfr_fqv_ts >> 4);
+		print_psd_time("emergency power fail vault time", ctrl->psd[i].epfvt,
+			       ctrl->psd[i].epfvts & 0xf);
 	}
 }
 
diff --git a/nvme-print.c b/nvme-print.c
index 303ffd85..77311e6c 100644
--- a/nvme-print.c
+++ b/nvme-print.c
@@ -1313,6 +1313,42 @@ const char *nvme_register_symbol_to_string(int offset)
 	return "unknown";
 }
 
+const char *nvme_time_scale_to_string(__u8 ts)
+{
+	switch (ts) {
+	case 0:
+		return "1 microsecond";
+	case 1:
+		return "10 microseconds";
+	case 2:
+		return "100 microseconds";
+	case 3:
+		return "1 millisecond";
+	case 4:
+		return "10 milliseconds";
+	case 5:
+		return "100 milliseconds";
+	case 6:
+		return "1 second";
+	case 7:
+		return "10 seconds";
+	case 8:
+		return "100 seconds";
+	case 9:
+		return "1,000 seconds";
+	case 0xa:
+		return "10,000 seconds";
+	case 0xb:
+		return "100,000 seconds";
+	case 0xc:
+		return "1,000,000 seconds";
+	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);
diff --git a/nvme-print.h b/nvme-print.h
index 00f19947..b88149a9 100644
--- a/nvme-print.h
+++ b/nvme-print.h
@@ -311,6 +311,7 @@ const char *nvme_ns_wp_cfg_to_string(enum nvme_ns_write_protect_cfg state);
 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);
 
 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);