[RFC PATCH 03/17] hw/misc/temp-sensor: Add 'info temp' HMP command

[Philippe Mathieu-Daudé]

Add a command to display current devices temperature in the monitor:

  (qemu) info temp
  Temperatures (in C):
  videocore                          25.00
  bcm2835-thermal-0                  25.00

Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 include/monitor/hmp.h |  1 +
 hw/misc/temp-sensor.c | 29 +++++++++++++++++++++++++++++
 hmp-commands-info.hx  | 11 +++++++++++
 3 files changed, 41 insertions(+)

diff --git a/include/monitor/hmp.h b/include/monitor/hmp.h
index e33ca5a911..f023230bd1 100644
--- a/include/monitor/hmp.h
+++ b/include/monitor/hmp.h
@@ -129,5 +129,6 @@ void hmp_hotpluggable_cpus(Monitor *mon, const QDict 
*qdict);
 void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict);
 void hmp_info_memory_size_summary(Monitor *mon, const QDict *qdict);
 void hmp_info_sev(Monitor *mon, const QDict *qdict);
+void hmp_info_temp(Monitor *mon, const QDict *qdict);
 
 #endif
diff --git a/hw/misc/temp-sensor.c b/hw/misc/temp-sensor.c
index 27750c533d..5f591bd9c3 100644
--- a/hw/misc/temp-sensor.c
+++ b/hw/misc/temp-sensor.c
@@ -12,6 +12,8 @@
 #include "hw/misc/temp-sensor.h"
 #include "qapi/qapi-commands-misc.h"
 #include "qapi/error.h"
+#include "monitor/monitor.h"
+#include "monitor/hmp.h"
 
 static int query_temperature_sensors_foreach(Object *obj, void *opaque)
 {
@@ -59,6 +61,33 @@ TemperatureSensorList *qmp_query_temperature_sensors(Error 
**errp)
     return list;
 }
 
+void hmp_info_temp(Monitor *mon, const QDict *qdict)
+{
+    TemperatureSensorList *list, *sensor;
+    Error *err = NULL;
+
+    list = qmp_query_temperature_sensors(&err);
+    if (!list) {
+        monitor_printf(mon, "No temperature sensors\n");
+        return;
+    }
+    if (err) {
+        monitor_printf(mon, "Error while getting temperatures: %s\n",
+                       error_get_pretty(err));
+        error_free(err);
+        goto out;
+    }
+
+    monitor_printf(mon, "Temperatures (in C):\n");
+    for (sensor = list; sensor; sensor = sensor->next) {
+        monitor_printf(mon, "%-33s %6.2f\n", sensor->value->name,
+                       sensor->value->temperature);
+    }
+
+out:
+    qapi_free_TemperatureSensorList(list);
+}
+
 static TypeInfo tempsensor_interface_type_info = {
     .name = TYPE_TEMPSENSOR_INTERFACE,
     .parent = TYPE_INTERFACE,
diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index ca5198438d..77f1c43ce3 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -880,4 +880,15 @@ SRST
     Show SEV information.
 ERST
 
+    {
+        .name       = "temp",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show device temperatures",
+        .cmd        = hmp_info_temp,
+    },
 
+SRST
+  ``info temp``
+    Show device temperatures.
+ERST
-- 
2.21.1