[Qemu-devel] [RFC 4/5] qmp: add query-acpi-ospm-status command

[Igor Mammedov]

... to get ACPI OSPM status reported by ACPI devices
via _OST method.

Signed-off-by: Igor Mammedov <address@hidden>
---
 qapi-schema.json |    9 +++++++++
 qmp-commands.hx  |   22 ++++++++++++++++++++++
 qmp.c            |   20 ++++++++++++++++++++
 3 files changed, 51 insertions(+), 0 deletions(-)

diff --git a/qapi-schema.json b/qapi-schema.json
index 834ec59..5fa0766 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -4793,3 +4793,12 @@
               'source': 'int',
               'status': 'int',
               'slot': 'int' } }
+
+##
+# @query-acpi-ospm-status
+#
+# Lists ACPI OSPM device statuses reported via _OST method
+#
+# Since: 2.1
+##
+{ 'command': 'query-acpi-ospm-status', 'returns': ['ACPIOSTInfo'] }
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 45cb980..a757b39 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -3599,3 +3599,25 @@ Example:
                    'type': 'dimm'
                  } ] }
 EQMP
+
+    {
+        .name       = "query-acpi-ospm-status",
+        .args_type  = "",
+        .mhandler.cmd_new = qmp_marshal_input_query_acpi_ospm_status,
+    },
+
+SQMP
address@hidden
+--------------------
+
+Return list of ACPIOSTInfo for devices that support status reporting
+via ACPI _OST method.
+
+Example:
+-> { "execute": "query-acpi-ospm-status" }
+<- { 'return': [ { 'device': 'd1', 'slot': 0, 'source': 1, 'status': 0},
+                 { 'device': '', 'slot': 1, 'source': 0, 'status': 0},
+                 { 'device': '', 'slot': 2, 'source': 0, 'status': 0},
+                 { 'device': '', 'slot': 3, 'source': 0, 'status': 0}
+   ]}
+EQMP
diff --git a/qmp.c b/qmp.c
index 045d477..478710a 100644
--- a/qmp.c
+++ b/qmp.c
@@ -29,6 +29,7 @@
 #include "hw/boards.h"
 #include "qom/object_interfaces.h"
 #include "hw/mem/dimm.h"
+#include "hw/acpi/acpi_dev_interface.h"
 
 NameInfo *qmp_query_name(Error **errp)
 {
@@ -639,3 +640,22 @@ MemoryDeviceInfoList *qmp_query_memory_devices(Error 
**errp)
 
     return head;
 }
+
+ACPIOSTInfoList *qmp_query_acpi_ospm_status(Error **errp)
+{
+    bool ambig;
+    ACPIOSTInfoList *head = NULL;
+    ACPIOSTInfoList **prev = &head;
+    Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, &ambig);
+
+    if (obj) {
+        AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
+        AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj);
+
+        adevc->ospm_status(adev, &prev);
+    } else {
+        error_setg(errp, "command is not supported, missing ACPI device");
+    }
+
+    return head;
+}
-- 
1.7.1