@@ -32,17 +32,23 @@
##
# @device_add:
#
+# Add a device.
+#
# @driver: the name of the new device's driver
#
# @bus: the device's parent bus (device tree path)
#
# @id: the device's ID, must be unique
#
-# Additional arguments depend on the type.
-#
-# Add a device.
+# Features:
+# @json-cli: If present, the "-device" command line option supports JSON
+# syntax with a structure identical to the arguments of this
+# command.
#
# Notes:
+#
+# Additional arguments depend on the type.
+#
# 1. For detailed information about this command, please refer to the
# 'docs/qdev-device-use.txt' file.
#
@@ -67,7 +73,8 @@
##
{ 'command': 'device_add',
'data': {'driver': 'str', '*bus': 'str', '*id': 'str'},
- 'gen': false } # so we can get the additional arguments
+ 'gen': false, # so we can get the additional arguments
+ 'features': ['json-cli'] }
##
# @device_del:
@@ -144,6 +144,12 @@ typedef struct ObjectOption {
QTAILQ_ENTRY(ObjectOption) next;
} ObjectOption;
+typedef struct DeviceOption {
+ QDict *opts;
+ Location loc;
+ QTAILQ_ENTRY(DeviceOption) next;
+} DeviceOption;
+
static const char *cpu_option;
static const char *mem_path;
static const char *incoming;
@@ -151,6 +157,7 @@ static const char *loadvm;
static const char *accelerators;
static QDict *machine_opts_dict;
static QTAILQ_HEAD(, ObjectOption) object_opts = QTAILQ_HEAD_INITIALIZER(object_opts);
+static QTAILQ_HEAD(, DeviceOption) device_opts = QTAILQ_HEAD_INITIALIZER(device_opts);
static ram_addr_t maxram_size;
static uint64_t ram_slots;
static int display_remote;
@@ -494,21 +501,39 @@ const char *qemu_get_vm_name(void)
return qemu_name;
}
-static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
+static void default_driver_disable(const char *driver)
{
- const char *driver = qemu_opt_get(opts, "driver");
int i;
- if (!driver)
- return 0;
+ if (!driver) {
+ return;
+ }
+
for (i = 0; i < ARRAY_SIZE(default_list); i++) {
if (strcmp(default_list[i].driver, driver) != 0)
continue;
*(default_list[i].flag) = 0;
}
+}
+
+static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
+{
+ const char *driver = qemu_opt_get(opts, "driver");
+
+ default_driver_disable(driver);
return 0;
}
+static void default_driver_check_json(void)
+{
+ DeviceOption *opt;
+
+ QTAILQ_FOREACH(opt, &device_opts, next) {
+ const char *driver = qdict_get_try_str(opt->opts, "driver");
+ default_driver_disable(driver);
+ }
+}
+
static int parse_name(void *opaque, QemuOpts *opts, Error **errp)
{
const char *proc_name;
@@ -1311,6 +1336,7 @@ static void qemu_disable_default_devices(void)
{
MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
+ default_driver_check_json();
qemu_opts_foreach(qemu_find_opts("device"),
default_driver_check, NULL, NULL);
qemu_opts_foreach(qemu_find_opts("global"),
@@ -2637,6 +2663,8 @@ static void qemu_init_board(void)
static void qemu_create_cli_devices(void)
{
+ DeviceOption *opt;
+
soundhw_init();
qemu_opts_foreach(qemu_find_opts("fw_cfg"),
@@ -2652,6 +2680,13 @@ static void qemu_create_cli_devices(void)
rom_set_order_override(FW_CFG_ORDER_OVERRIDE_DEVICE);
qemu_opts_foreach(qemu_find_opts("device"),
device_init_func, NULL, &error_fatal);
+ QTAILQ_FOREACH(opt, &device_opts, next) {
+ QObject *ret_data;
+
+ loc_push_restore(&opt->loc);
+ qmp_device_add(opt->opts, &ret_data, &error_fatal);
+ loc_pop(&opt->loc);
+ }
rom_reset_order_override();
}
@@ -3352,9 +3387,18 @@ void qemu_init(int argc, char **argv, char **envp)
add_device_config(DEV_USB, optarg);
break;
case QEMU_OPTION_device:
- if (!qemu_opts_parse_noisily(qemu_find_opts("device"),
- optarg, true)) {
- exit(1);
+ if (optarg[0] == '{') {
+ QObject *obj = qobject_from_json(optarg, &error_fatal);
+ DeviceOption *opt = g_new0(DeviceOption, 1);
+ opt->opts = qobject_to(QDict, obj);
+ loc_save(&opt->loc);
+ assert(opt->opts != NULL);
+ QTAILQ_INSERT_TAIL(&device_opts, opt, next);
+ } else {
+ if (!qemu_opts_parse_noisily(qemu_find_opts("device"),
+ optarg, true)) {
+ exit(1);
+ }
}
break;
case QEMU_OPTION_smp:
Like we already do for -object, introduce support for JSON syntax in -device, which can be kept stable in the long term and guarantees that a single code path with identical behaviour is used for both QMP and the command line. Compared to the QemuOpts based code, the parser contains less surprises and has support for non-scalar options (lists and structs). Switching management tools to JSON means that we can more easily change the "human" CLI syntax from QemuOpts to the keyval parser later. In the QAPI schema, a feature flag is added to the device-add command to allow management tools to detect support for this. Signed-off-by: Kevin Wolf <kwolf@redhat.com> --- qapi/qdev.json | 15 +++++++++---- softmmu/vl.c | 58 ++++++++++++++++++++++++++++++++++++++++++++------ 2 files changed, 62 insertions(+), 11 deletions(-)