[Qemu-devel] [PATCH v5 2/5] arm: qmp: add query-gic-capabilities interface

[Peter Xu <peterx@redhat.com>]

This patch adds the command "query-gic-capabilities" but not implemnet
it. The command is ARM-only. Return of the command is a list of
GICCapability struct that describes all GIC versions that current QEMU
and system support.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 monitor.c                |  8 ++++++++
 qapi-schema.json         | 11 +++++++++++
 qmp-commands.hx          | 26 ++++++++++++++++++++++++++
 scripts/qapi.py          |  1 +
 target-arm/Makefile.objs |  2 +-
 target-arm/monitor.c     | 31 +++++++++++++++++++++++++++++++
 6 files changed, 78 insertions(+), 1 deletion(-)
 create mode 100644 target-arm/monitor.c

diff --git a/monitor.c b/monitor.c
index 894f862..d463dc4 100644
--- a/monitor.c
+++ b/monitor.c
@@ -4257,3 +4257,11 @@ void qmp_dump_skeys(const char *filename, Error **errp)
     error_setg(errp, QERR_FEATURE_DISABLED, "dump-skeys");
 }
 #endif
+
+#ifndef TARGET_ARM
+GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
+{
+    error_setg(errp, QERR_FEATURE_DISABLED, "query-gic-capabilities");
+    return NULL;
+}
+#endif
diff --git a/qapi-schema.json b/qapi-schema.json
index da9671a..b2ef149 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -4156,3 +4156,14 @@
   'data': { 'version': 'int',
             'emulated': 'bool',
             'kernel': 'bool' } }
+
+##
+# @query-gic-capabilities:
+#
+# Return a list of supported GIC version capabilities.
+#
+# Returns: a list of GICCapability.
+#
+# Since: 2.6
+##
+{ 'command': 'query-gic-capabilities', 'returns': ['GICCapability'] }
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 9e05365..a124ea8 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -4853,3 +4853,29 @@ Example:
                  {"type": 0, "out-pport": 0, "pport": 0, "vlan-id": 3840,
                   "pop-vlan": 1, "id": 251658240}
    ]}
+
+EQMP
+
+#if defined TARGET_ARM
+    {
+        .name       = "query-gic-capabilities",
+        .args_type  = "",
+        .mhandler.cmd_new = qmp_marshal_query_gic_capabilities,
+    },
+#endif
+
+SQMP
+query-gic-capabilities
+---------------
+
+Return a list of supported ARM GIC versions and their capabilities.
+
+Arguments: None
+
+Example:
+
+-> { "execute": "query-gic-capabilities" }
+<- { "return": [{ "version": 2, "emulated": true, "kernel": false },
+                { "version": 3, "emulated": false, "kernel": true } ] }
+
+EQMP
diff --git a/scripts/qapi.py b/scripts/qapi.py
index 6b2aa6e..716474e 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -46,6 +46,7 @@ returns_whitelist = [
     'query-tpm-models',
     'query-tpm-types',
     'ringbuf-read',
+    'query-gic-capability',
 
     # From QGA:
     'guest-file-open',
diff --git a/target-arm/Makefile.objs b/target-arm/Makefile.objs
index a80eb39..334074c 100644
--- a/target-arm/Makefile.objs
+++ b/target-arm/Makefile.objs
@@ -8,4 +8,4 @@ obj-y += translate.o op_helper.o helper.o cpu.o
 obj-y += neon_helper.o iwmmxt_helper.o
 obj-y += gdbstub.o
 obj-$(TARGET_AARCH64) += cpu64.o translate-a64.o helper-a64.o gdbstub64.o
-obj-y += crypto_helper.o
+obj-y += crypto_helper.o monitor.o
diff --git a/target-arm/monitor.c b/target-arm/monitor.c
new file mode 100644
index 0000000..5678eb8
--- /dev/null
+++ b/target-arm/monitor.c
@@ -0,0 +1,31 @@
+/*
+ * QEMU monitor.c for ARM.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "qemu/osdep.h"
+#include "hw/boards.h"
+#include "qemu/error-report.h"
+#include "sysemu/kvm.h"
+#include "qmp-commands.h"
+
+GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
+{
+    return NULL;
+}
-- 
2.4.3