ocp-nvme: Add LMDATA-37 for Latency Monitor Log

Datacenter NVMe SSD Specification v2.5
Log Identifier C3h
[447:436] Latency Monitor Debug Telemetry Log Size
This is the number of Dwords in the Latency Monitor Debug Log.
This value is in Dwords.
little endian order print

Signed-off-by: Hyuntae Kim <h1219.kim@samsung.com>
Signed-off-by: Steven Seungcheol Lee <sc108.lee@samsung.com>

diff --git a/plugins/ocp/ocp-nvme.c b/plugins/ocp/ocp-nvme.c
index 830e6835d48cdc8a29659cd9854d7f4ff673db26..f6ed1e1435ef28f1e2ac55f28f436b3fd31119c7 100644 (file)
--- a/plugins/ocp/ocp-nvme.c
+++ b/plugins/ocp/ocp-nvme.c
@@ -87,8 +87,9 @@ struct __packed ssd_latency_monitor_log {
        __le64  static_latency_timestamp[4][3]; /* 0x130 - 0x18F */
        __le16  static_measured_latency[4][3];  /* 0x190 - 0x1A7 */
        __le16  static_latency_stamp_units;     /* 0x1A8 */
-       __u8    rsvd4[0x16];                    /* 0x1AA */
+       __u8    rsvd4[0x0A];                    /* 0x1AA */
 
+       __u8    latency_monitor_debug_log_size[0x0C]; /* 0x1B4 */
        __le16  debug_log_trigger_enable;       /* 0x1C0 */
        __le16  debug_log_measured_latency;     /* 0x1C2 */
        __le64  debug_log_latency_stamp;        /* 0x1C4 */
@@ -212,6 +213,7 @@ static int ocp_print_C3_log_normal(struct nvme_dev *dev,
 {
        char ts_buf[128];
        int i, j;
+       __u16 log_page_version = le16_to_cpu(log_data->log_page_version);
 
        printf("-Latency Monitor/C3 Log Page Data-\n");
        printf("  Controller   :  %s\n", dev->name);
@@ -244,6 +246,15 @@ static int ocp_print_C3_log_normal(struct nvme_dev *dev,
               le16_to_cpu(log_data->active_latency_stamp_units));
        printf("  Static Latency Stamp Units         %d\n",
               le16_to_cpu(log_data->static_latency_stamp_units));
+       if (log_page_version >= 0x4) {
+               printf("    Debug Telemetry Log Size         0x");
+               for (i = ARRAY_SIZE(log_data->latency_monitor_debug_log_size) - 1;
+                       i > 0 && (log_data->latency_monitor_debug_log_size[i] == 0); i--)
+                       ;
+               while (i >= 0)
+                       printf("%02x", log_data->latency_monitor_debug_log_size[i--]);
+               printf("\n");
+       }
        printf("  Debug Log Trigger Enable           %d\n",
               le16_to_cpu(log_data->debug_log_trigger_enable));
        printf("  Debug Log Measured Latency         %d\n",
@@ -260,8 +271,7 @@ static int ocp_print_C3_log_normal(struct nvme_dev *dev,
               le16_to_cpu(log_data->debug_log_counter_trigger));
        printf("  Debug Log Stamp Units              %d\n",
               le16_to_cpu(log_data->debug_log_stamp_units));
-       printf("  Log Page Version                   %d\n",
-              le16_to_cpu(log_data->log_page_version));
+       printf("  Log Page Version                   %d\n", log_page_version);
 
        char guid[(C3_GUID_LENGTH * 2) + 1];
        char *ptr = &guid[0];
@@ -342,6 +352,7 @@ static void ocp_print_C3_log_json(struct ssd_latency_monitor_log *log_data)
        char buf[128];
        int i, j;
        char *operation[3] = {"Trim", "Write", "Read"};
+       __u16 log_page_version = le16_to_cpu(log_data->log_page_version);
 
        root = json_create_object();
 
@@ -456,6 +467,19 @@ static void ocp_print_C3_log_json(struct ssd_latency_monitor_log *log_data)
 
        json_object_add_value_uint(root, "Static Latency Stamp Units",
                le16_to_cpu(log_data->static_latency_stamp_units));
+       if (log_page_version >= 0x4) {
+               strcpy(buf, "0x");
+               for (i = ARRAY_SIZE(log_data->latency_monitor_debug_log_size) - 1;
+                       i > 0 && (log_data->latency_monitor_debug_log_size[i] == 0); i--)
+                       ;
+               while (i >= 0) {
+                       char hex_string[3];
+
+                       sprintf(hex_string, "%02x", log_data->latency_monitor_debug_log_size[i--]);
+                       strcat(buf, hex_string);
+               }
+               json_object_add_value_string(root, "Debug Telemetry Log Size", buf);
+       }
        json_object_add_value_uint(root, "Debug Log Trigger Enable",
                le16_to_cpu(log_data->debug_log_trigger_enable));
        json_object_add_value_uint(root, "Debug Log Measured Latency",
@@ -472,8 +496,7 @@ static void ocp_print_C3_log_json(struct ssd_latency_monitor_log *log_data)
                le16_to_cpu(log_data->debug_log_counter_trigger));
        json_object_add_value_uint(root, "Debug Log Stamp Units",
                le16_to_cpu(log_data->debug_log_stamp_units));
-       json_object_add_value_uint(root, "Log Page Version",
-               le16_to_cpu(log_data->log_page_version));
+       json_object_add_value_uint(root, "Log Page Version", log_page_version);
 
        char guid[(C3_GUID_LENGTH * 2) + 1];
        char *ptr = &guid[0];