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-rw-r--r--qdev-monitor.c684
1 files changed, 684 insertions, 0 deletions
diff --git a/qdev-monitor.c b/qdev-monitor.c
new file mode 100644
index 0000000000..9a78ccff6d
--- /dev/null
+++ b/qdev-monitor.c
@@ -0,0 +1,684 @@
+/*
+ * Dynamic device configuration and creation.
+ *
+ * Copyright (c) 2009 CodeSourcery
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "hw/qdev.h"
+#include "monitor/monitor.h"
+#include "monitor/qdev.h"
+#include "qmp-commands.h"
+#include "sysemu/arch_init.h"
+#include "qemu/config-file.h"
+
+/*
+ * Aliases were a bad idea from the start. Let's keep them
+ * from spreading further.
+ */
+typedef struct QDevAlias
+{
+ const char *typename;
+ const char *alias;
+ uint32_t arch_mask;
+} QDevAlias;
+
+static const QDevAlias qdev_alias_table[] = {
+ { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
+ { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
+ { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
+ { "virtio-balloon-pci", "virtio-balloon",
+ QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
+ { "virtio-blk-s390", "virtio-blk", QEMU_ARCH_S390X },
+ { "virtio-net-s390", "virtio-net", QEMU_ARCH_S390X },
+ { "virtio-serial-s390", "virtio-serial", QEMU_ARCH_S390X },
+ { "lsi53c895a", "lsi" },
+ { "ich9-ahci", "ahci" },
+ { "kvm-pci-assign", "pci-assign" },
+ { }
+};
+
+static const char *qdev_class_get_alias(DeviceClass *dc)
+{
+ const char *typename = object_class_get_name(OBJECT_CLASS(dc));
+ int i;
+
+ for (i = 0; qdev_alias_table[i].typename; i++) {
+ if (qdev_alias_table[i].arch_mask &&
+ !(qdev_alias_table[i].arch_mask & arch_type)) {
+ continue;
+ }
+
+ if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
+ return qdev_alias_table[i].alias;
+ }
+ }
+
+ return NULL;
+}
+
+static bool qdev_class_has_alias(DeviceClass *dc)
+{
+ return (qdev_class_get_alias(dc) != NULL);
+}
+
+static void qdev_print_devinfo(ObjectClass *klass, void *opaque)
+{
+ DeviceClass *dc;
+ bool *show_no_user = opaque;
+
+ dc = (DeviceClass *)object_class_dynamic_cast(klass, TYPE_DEVICE);
+
+ if (!dc || (show_no_user && !*show_no_user && dc->no_user)) {
+ return;
+ }
+
+ error_printf("name \"%s\"", object_class_get_name(klass));
+ if (dc->bus_type) {
+ error_printf(", bus %s", dc->bus_type);
+ }
+ if (qdev_class_has_alias(dc)) {
+ error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
+ }
+ if (dc->desc) {
+ error_printf(", desc \"%s\"", dc->desc);
+ }
+ if (dc->no_user) {
+ error_printf(", no-user");
+ }
+ error_printf("\n");
+}
+
+static int set_property(const char *name, const char *value, void *opaque)
+{
+ DeviceState *dev = opaque;
+
+ if (strcmp(name, "driver") == 0)
+ return 0;
+ if (strcmp(name, "bus") == 0)
+ return 0;
+
+ if (qdev_prop_parse(dev, name, value) == -1) {
+ return -1;
+ }
+ return 0;
+}
+
+static const char *find_typename_by_alias(const char *alias)
+{
+ int i;
+
+ for (i = 0; qdev_alias_table[i].alias; i++) {
+ if (qdev_alias_table[i].arch_mask &&
+ !(qdev_alias_table[i].arch_mask & arch_type)) {
+ continue;
+ }
+
+ if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
+ return qdev_alias_table[i].typename;
+ }
+ }
+
+ return NULL;
+}
+
+int qdev_device_help(QemuOpts *opts)
+{
+ const char *driver;
+ Property *prop;
+ ObjectClass *klass;
+
+ driver = qemu_opt_get(opts, "driver");
+ if (driver && is_help_option(driver)) {
+ bool show_no_user = false;
+ object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, &show_no_user);
+ return 1;
+ }
+
+ if (!driver || !qemu_opt_has_help_opt(opts)) {
+ return 0;
+ }
+
+ klass = object_class_by_name(driver);
+ if (!klass) {
+ const char *typename = find_typename_by_alias(driver);
+
+ if (typename) {
+ driver = typename;
+ klass = object_class_by_name(driver);
+ }
+ }
+
+ if (!klass) {
+ return 0;
+ }
+ do {
+ for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
+ /*
+ * TODO Properties without a parser are just for dirty hacks.
+ * qdev_prop_ptr is the only such PropertyInfo. It's marked
+ * for removal. This conditional should be removed along with
+ * it.
+ */
+ if (!prop->info->set) {
+ continue; /* no way to set it, don't show */
+ }
+ error_printf("%s.%s=%s\n", driver, prop->name,
+ prop->info->legacy_name ?: prop->info->name);
+ }
+ klass = object_class_get_parent(klass);
+ } while (klass != object_class_by_name(TYPE_DEVICE));
+ return 1;
+}
+
+static Object *qdev_get_peripheral(void)
+{
+ static Object *dev;
+
+ if (dev == NULL) {
+ dev = container_get(qdev_get_machine(), "/peripheral");
+ }
+
+ return dev;
+}
+
+static Object *qdev_get_peripheral_anon(void)
+{
+ static Object *dev;
+
+ if (dev == NULL) {
+ dev = container_get(qdev_get_machine(), "/peripheral-anon");
+ }
+
+ return dev;
+}
+
+static void qbus_list_bus(DeviceState *dev)
+{
+ BusState *child;
+ const char *sep = " ";
+
+ error_printf("child busses at \"%s\":",
+ dev->id ? dev->id : object_get_typename(OBJECT(dev)));
+ QLIST_FOREACH(child, &dev->child_bus, sibling) {
+ error_printf("%s\"%s\"", sep, child->name);
+ sep = ", ";
+ }
+ error_printf("\n");
+}
+
+static void qbus_list_dev(BusState *bus)
+{
+ BusChild *kid;
+ const char *sep = " ";
+
+ error_printf("devices at \"%s\":", bus->name);
+ QTAILQ_FOREACH(kid, &bus->children, sibling) {
+ DeviceState *dev = kid->child;
+ error_printf("%s\"%s\"", sep, object_get_typename(OBJECT(dev)));
+ if (dev->id)
+ error_printf("/\"%s\"", dev->id);
+ sep = ", ";
+ }
+ error_printf("\n");
+}
+
+static BusState *qbus_find_bus(DeviceState *dev, char *elem)
+{
+ BusState *child;
+
+ QLIST_FOREACH(child, &dev->child_bus, sibling) {
+ if (strcmp(child->name, elem) == 0) {
+ return child;
+ }
+ }
+ return NULL;
+}
+
+static DeviceState *qbus_find_dev(BusState *bus, char *elem)
+{
+ BusChild *kid;
+
+ /*
+ * try to match in order:
+ * (1) instance id, if present
+ * (2) driver name
+ * (3) driver alias, if present
+ */
+ QTAILQ_FOREACH(kid, &bus->children, sibling) {
+ DeviceState *dev = kid->child;
+ if (dev->id && strcmp(dev->id, elem) == 0) {
+ return dev;
+ }
+ }
+ QTAILQ_FOREACH(kid, &bus->children, sibling) {
+ DeviceState *dev = kid->child;
+ if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
+ return dev;
+ }
+ }
+ QTAILQ_FOREACH(kid, &bus->children, sibling) {
+ DeviceState *dev = kid->child;
+ DeviceClass *dc = DEVICE_GET_CLASS(dev);
+
+ if (qdev_class_has_alias(dc) &&
+ strcmp(qdev_class_get_alias(dc), elem) == 0) {
+ return dev;
+ }
+ }
+ return NULL;
+}
+
+static BusState *qbus_find_recursive(BusState *bus, const char *name,
+ const char *bus_typename)
+{
+ BusClass *bus_class = BUS_GET_CLASS(bus);
+ BusChild *kid;
+ BusState *child, *ret;
+ int match = 1;
+
+ if (name && (strcmp(bus->name, name) != 0)) {
+ match = 0;
+ }
+ if (bus_typename && !object_dynamic_cast(OBJECT(bus), bus_typename)) {
+ match = 0;
+ }
+ if ((bus_class->max_dev != 0) && (bus_class->max_dev <= bus->max_index)) {
+ if (name != NULL) {
+ /* bus was explicitly specified: return an error. */
+ qerror_report(ERROR_CLASS_GENERIC_ERROR, "Bus '%s' is full",
+ bus->name);
+ return NULL;
+ } else {
+ /* bus was not specified: try to find another one. */
+ match = 0;
+ }
+ }
+ if (match) {
+ return bus;
+ }
+
+ QTAILQ_FOREACH(kid, &bus->children, sibling) {
+ DeviceState *dev = kid->child;
+ QLIST_FOREACH(child, &dev->child_bus, sibling) {
+ ret = qbus_find_recursive(child, name, bus_typename);
+ if (ret) {
+ return ret;
+ }
+ }
+ }
+ return NULL;
+}
+
+static BusState *qbus_find(const char *path)
+{
+ DeviceState *dev;
+ BusState *bus;
+ char elem[128];
+ int pos, len;
+
+ /* find start element */
+ if (path[0] == '/') {
+ bus = sysbus_get_default();
+ pos = 0;
+ } else {
+ if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
+ assert(!path[0]);
+ elem[0] = len = 0;
+ }
+ bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
+ if (!bus) {
+ qerror_report(QERR_BUS_NOT_FOUND, elem);
+ return NULL;
+ }
+ pos = len;
+ }
+
+ for (;;) {
+ assert(path[pos] == '/' || !path[pos]);
+ while (path[pos] == '/') {
+ pos++;
+ }
+ if (path[pos] == '\0') {
+ return bus;
+ }
+
+ /* find device */
+ if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
+ assert(0);
+ elem[0] = len = 0;
+ }
+ pos += len;
+ dev = qbus_find_dev(bus, elem);
+ if (!dev) {
+ qerror_report(QERR_DEVICE_NOT_FOUND, elem);
+ if (!monitor_cur_is_qmp()) {
+ qbus_list_dev(bus);
+ }
+ return NULL;
+ }
+
+ assert(path[pos] == '/' || !path[pos]);
+ while (path[pos] == '/') {
+ pos++;
+ }
+ if (path[pos] == '\0') {
+ /* last specified element is a device. If it has exactly
+ * one child bus accept it nevertheless */
+ switch (dev->num_child_bus) {
+ case 0:
+ qerror_report(QERR_DEVICE_NO_BUS, elem);
+ return NULL;
+ case 1:
+ return QLIST_FIRST(&dev->child_bus);
+ default:
+ qerror_report(QERR_DEVICE_MULTIPLE_BUSSES, elem);
+ if (!monitor_cur_is_qmp()) {
+ qbus_list_bus(dev);
+ }
+ return NULL;
+ }
+ }
+
+ /* find bus */
+ if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
+ assert(0);
+ elem[0] = len = 0;
+ }
+ pos += len;
+ bus = qbus_find_bus(dev, elem);
+ if (!bus) {
+ qerror_report(QERR_BUS_NOT_FOUND, elem);
+ if (!monitor_cur_is_qmp()) {
+ qbus_list_bus(dev);
+ }
+ return NULL;
+ }
+ }
+}
+
+DeviceState *qdev_device_add(QemuOpts *opts)
+{
+ ObjectClass *obj;
+ DeviceClass *k;
+ const char *driver, *path, *id;
+ DeviceState *qdev;
+ BusState *bus;
+
+ driver = qemu_opt_get(opts, "driver");
+ if (!driver) {
+ qerror_report(QERR_MISSING_PARAMETER, "driver");
+ return NULL;
+ }
+
+ /* find driver */
+ obj = object_class_by_name(driver);
+ if (!obj) {
+ const char *typename = find_typename_by_alias(driver);
+
+ if (typename) {
+ driver = typename;
+ obj = object_class_by_name(driver);
+ }
+ }
+
+ if (!obj) {
+ qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "device type");
+ return NULL;
+ }
+
+ k = DEVICE_CLASS(obj);
+
+ /* find bus */
+ path = qemu_opt_get(opts, "bus");
+ if (path != NULL) {
+ bus = qbus_find(path);
+ if (!bus) {
+ return NULL;
+ }
+ if (!object_dynamic_cast(OBJECT(bus), k->bus_type)) {
+ qerror_report(QERR_BAD_BUS_FOR_DEVICE,
+ driver, object_get_typename(OBJECT(bus)));
+ return NULL;
+ }
+ } else {
+ bus = qbus_find_recursive(sysbus_get_default(), NULL, k->bus_type);
+ if (!bus) {
+ qerror_report(QERR_NO_BUS_FOR_DEVICE,
+ k->bus_type, driver);
+ return NULL;
+ }
+ }
+ if (qdev_hotplug && !bus->allow_hotplug) {
+ qerror_report(QERR_BUS_NO_HOTPLUG, bus->name);
+ return NULL;
+ }
+
+ if (!bus) {
+ bus = sysbus_get_default();
+ }
+
+ /* create device, set properties */
+ qdev = DEVICE(object_new(driver));
+ qdev_set_parent_bus(qdev, bus);
+
+ id = qemu_opts_id(opts);
+ if (id) {
+ qdev->id = id;
+ }
+ if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) {
+ qdev_free(qdev);
+ return NULL;
+ }
+ if (qdev->id) {
+ object_property_add_child(qdev_get_peripheral(), qdev->id,
+ OBJECT(qdev), NULL);
+ } else {
+ static int anon_count;
+ gchar *name = g_strdup_printf("device[%d]", anon_count++);
+ object_property_add_child(qdev_get_peripheral_anon(), name,
+ OBJECT(qdev), NULL);
+ g_free(name);
+ }
+ if (qdev_init(qdev) < 0) {
+ qerror_report(QERR_DEVICE_INIT_FAILED, driver);
+ return NULL;
+ }
+ qdev->opts = opts;
+ return qdev;
+}
+
+
+#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
+static void qbus_print(Monitor *mon, BusState *bus, int indent);
+
+static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
+ int indent)
+{
+ if (!props)
+ return;
+ for (; props->name; props++) {
+ Error *err = NULL;
+ char *value;
+ char *legacy_name = g_strdup_printf("legacy-%s", props->name);
+ if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
+ value = object_property_get_str(OBJECT(dev), legacy_name, &err);
+ } else {
+ value = object_property_print(OBJECT(dev), props->name, &err);
+ }
+ g_free(legacy_name);
+
+ if (err) {
+ error_free(err);
+ continue;
+ }
+ qdev_printf("%s = %s\n", props->name,
+ value && *value ? value : "<null>");
+ g_free(value);
+ }
+}
+
+static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
+{
+ BusClass *bc = BUS_GET_CLASS(bus);
+
+ if (bc->print_dev) {
+ bc->print_dev(mon, dev, indent);
+ }
+}
+
+static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
+{
+ ObjectClass *class;
+ BusState *child;
+ qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
+ dev->id ? dev->id : "");
+ indent += 2;
+ if (dev->num_gpio_in) {
+ qdev_printf("gpio-in %d\n", dev->num_gpio_in);
+ }
+ if (dev->num_gpio_out) {
+ qdev_printf("gpio-out %d\n", dev->num_gpio_out);
+ }
+ class = object_get_class(OBJECT(dev));
+ do {
+ qdev_print_props(mon, dev, DEVICE_CLASS(class)->props, indent);
+ class = object_class_get_parent(class);
+ } while (class != object_class_by_name(TYPE_DEVICE));
+ bus_print_dev(dev->parent_bus, mon, dev, indent);
+ QLIST_FOREACH(child, &dev->child_bus, sibling) {
+ qbus_print(mon, child, indent);
+ }
+}
+
+static void qbus_print(Monitor *mon, BusState *bus, int indent)
+{
+ BusChild *kid;
+
+ qdev_printf("bus: %s\n", bus->name);
+ indent += 2;
+ qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
+ QTAILQ_FOREACH(kid, &bus->children, sibling) {
+ DeviceState *dev = kid->child;
+ qdev_print(mon, dev, indent);
+ }
+}
+#undef qdev_printf
+
+void do_info_qtree(Monitor *mon, const QDict *qdict)
+{
+ if (sysbus_get_default())
+ qbus_print(mon, sysbus_get_default(), 0);
+}
+
+void do_info_qdm(Monitor *mon, const QDict *qdict)
+{
+ object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, NULL);
+}
+
+int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
+{
+ Error *local_err = NULL;
+ QemuOpts *opts;
+ DeviceState *dev;
+
+ opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
+ if (error_is_set(&local_err)) {
+ qerror_report_err(local_err);
+ error_free(local_err);
+ return -1;
+ }
+ if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
+ qemu_opts_del(opts);
+ return 0;
+ }
+ dev = qdev_device_add(opts);
+ if (!dev) {
+ qemu_opts_del(opts);
+ return -1;
+ }
+ object_unref(OBJECT(dev));
+ return 0;
+}
+
+void qmp_device_del(const char *id, Error **errp)
+{
+ DeviceState *dev;
+
+ dev = qdev_find_recursive(sysbus_get_default(), id);
+ if (NULL == dev) {
+ error_set(errp, QERR_DEVICE_NOT_FOUND, id);
+ return;
+ }
+
+ qdev_unplug(dev, errp);
+}
+
+void qdev_machine_init(void)
+{
+ qdev_get_peripheral_anon();
+ qdev_get_peripheral();
+}
+
+QemuOptsList qemu_device_opts = {
+ .name = "device",
+ .implied_opt_name = "driver",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
+ .desc = {
+ /*
+ * no elements => accept any
+ * sanity checking will happen later
+ * when setting device properties
+ */
+ { /* end of list */ }
+ },
+};
+
+QemuOptsList qemu_global_opts = {
+ .name = "global",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
+ .desc = {
+ {
+ .name = "driver",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "property",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "value",
+ .type = QEMU_OPT_STRING,
+ },
+ { /* end of list */ }
+ },
+};
+
+int qemu_global_option(const char *str)
+{
+ char driver[64], property[64];
+ QemuOpts *opts;
+ int rc, offset;
+
+ rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
+ if (rc < 2 || str[offset] != '=') {
+ error_report("can't parse: \"%s\"", str);
+ return -1;
+ }
+
+ opts = qemu_opts_create_nofail(&qemu_global_opts);
+ qemu_opt_set(opts, "driver", driver);
+ qemu_opt_set(opts, "property", property);
+ qemu_opt_set(opts, "value", str+offset+1);
+ return 0;
+}