root / hw / qdev-monitor.c @ 8294a64d
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/*
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* Dynamic device configuration and creation.
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*
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* Copyright (c) 2009 CodeSourcery
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qdev.h" |
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#include "monitor.h" |
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#include "qmp-commands.h" |
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/*
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* Aliases were a bad idea from the start. Let's keep them
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* from spreading further.
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*/
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typedef struct QDevAlias |
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{ |
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const char *typename; |
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const char *alias; |
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} QDevAlias; |
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static const QDevAlias qdev_alias_table[] = { |
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{ "virtio-blk-pci", "virtio-blk" }, |
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{ "virtio-net-pci", "virtio-net" }, |
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{ "virtio-serial-pci", "virtio-serial" }, |
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{ "virtio-balloon-pci", "virtio-balloon" }, |
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{ "virtio-blk-s390", "virtio-blk" }, |
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{ "virtio-net-s390", "virtio-net" }, |
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{ "virtio-serial-s390", "virtio-serial" }, |
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{ "lsi53c895a", "lsi" }, |
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{ "ich9-ahci", "ahci" }, |
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{ } |
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}; |
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static const char *qdev_class_get_alias(DeviceClass *dc) |
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{ |
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const char *typename = object_class_get_name(OBJECT_CLASS(dc)); |
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int i;
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for (i = 0; qdev_alias_table[i].typename; i++) { |
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if (strcmp(qdev_alias_table[i].typename, typename) == 0) { |
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return qdev_alias_table[i].alias;
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} |
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} |
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return NULL; |
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} |
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static bool qdev_class_has_alias(DeviceClass *dc) |
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{ |
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return (qdev_class_get_alias(dc) != NULL); |
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} |
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static void qdev_print_devinfo(ObjectClass *klass, void *opaque) |
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{ |
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DeviceClass *dc; |
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bool *show_no_user = opaque;
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dc = (DeviceClass *)object_class_dynamic_cast(klass, TYPE_DEVICE); |
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if (!dc || (show_no_user && !*show_no_user && dc->no_user)) {
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return;
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} |
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error_printf("name \"%s\"", object_class_get_name(klass));
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if (dc->bus_info) {
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error_printf(", bus %s", dc->bus_info->name);
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} |
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if (qdev_class_has_alias(dc)) {
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error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
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} |
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if (dc->desc) {
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error_printf(", desc \"%s\"", dc->desc);
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} |
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if (dc->no_user) {
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error_printf(", no-user");
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} |
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error_printf("\n");
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} |
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static int set_property(const char *name, const char *value, void *opaque) |
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{ |
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DeviceState *dev = opaque; |
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if (strcmp(name, "driver") == 0) |
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return 0; |
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if (strcmp(name, "bus") == 0) |
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return 0; |
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if (qdev_prop_parse(dev, name, value) == -1) { |
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return -1; |
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} |
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return 0; |
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} |
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static const char *find_typename_by_alias(const char *alias) |
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{ |
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int i;
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for (i = 0; qdev_alias_table[i].alias; i++) { |
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if (strcmp(qdev_alias_table[i].alias, alias) == 0) { |
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return qdev_alias_table[i].typename;
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} |
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} |
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return NULL; |
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} |
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int qdev_device_help(QemuOpts *opts)
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{ |
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const char *driver; |
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Property *prop; |
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ObjectClass *klass; |
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DeviceClass *info; |
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driver = qemu_opt_get(opts, "driver");
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if (driver && !strcmp(driver, "?")) { |
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bool show_no_user = false; |
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object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, &show_no_user);
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return 1; |
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} |
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if (!driver || !qemu_opt_get(opts, "?")) { |
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return 0; |
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} |
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klass = object_class_by_name(driver); |
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if (!klass) {
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const char *typename = find_typename_by_alias(driver); |
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if (typename) {
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driver = typename; |
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klass = object_class_by_name(driver); |
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} |
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} |
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if (!klass) {
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return 0; |
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} |
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info = DEVICE_CLASS(klass); |
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for (prop = info->props; prop && prop->name; prop++) {
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/*
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* TODO Properties without a parser are just for dirty hacks.
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* qdev_prop_ptr is the only such PropertyInfo. It's marked
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* for removal. This conditional should be removed along with
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* it.
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*/
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if (!prop->info->set) {
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continue; /* no way to set it, don't show */ |
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} |
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error_printf("%s.%s=%s\n", driver, prop->name,
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prop->info->legacy_name ?: prop->info->name); |
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} |
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if (info->bus_info) {
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for (prop = info->bus_info->props; prop && prop->name; prop++) {
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if (!prop->info->set) {
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continue; /* no way to set it, don't show */ |
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} |
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error_printf("%s.%s=%s\n", driver, prop->name,
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prop->info->legacy_name ?: prop->info->name); |
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} |
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} |
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return 1; |
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} |
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static Object *qdev_get_peripheral(void) |
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{ |
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static Object *dev;
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if (dev == NULL) { |
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dev = container_get(qdev_get_machine(), "/peripheral");
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} |
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return dev;
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} |
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static Object *qdev_get_peripheral_anon(void) |
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{ |
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static Object *dev;
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if (dev == NULL) { |
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dev = container_get(qdev_get_machine(), "/peripheral-anon");
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} |
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return dev;
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} |
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static void qbus_list_bus(DeviceState *dev) |
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{ |
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BusState *child; |
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const char *sep = " "; |
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error_printf("child busses at \"%s\":",
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dev->id ? dev->id : object_get_typename(OBJECT(dev))); |
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QLIST_FOREACH(child, &dev->child_bus, sibling) { |
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error_printf("%s\"%s\"", sep, child->name);
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sep = ", ";
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} |
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error_printf("\n");
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} |
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static void qbus_list_dev(BusState *bus) |
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{ |
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DeviceState *dev; |
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const char *sep = " "; |
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error_printf("devices at \"%s\":", bus->name);
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QTAILQ_FOREACH(dev, &bus->children, sibling) { |
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error_printf("%s\"%s\"", sep, object_get_typename(OBJECT(dev)));
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if (dev->id)
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error_printf("/\"%s\"", dev->id);
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sep = ", ";
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} |
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error_printf("\n");
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} |
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static BusState *qbus_find_bus(DeviceState *dev, char *elem) |
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{ |
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BusState *child; |
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QLIST_FOREACH(child, &dev->child_bus, sibling) { |
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if (strcmp(child->name, elem) == 0) { |
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return child;
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} |
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} |
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return NULL; |
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} |
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static DeviceState *qbus_find_dev(BusState *bus, char *elem) |
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{ |
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DeviceState *dev; |
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/*
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* try to match in order:
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* (1) instance id, if present
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* (2) driver name
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* (3) driver alias, if present
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*/
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QTAILQ_FOREACH(dev, &bus->children, sibling) { |
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if (dev->id && strcmp(dev->id, elem) == 0) { |
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return dev;
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} |
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} |
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QTAILQ_FOREACH(dev, &bus->children, sibling) { |
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if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) { |
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return dev;
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} |
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} |
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QTAILQ_FOREACH(dev, &bus->children, sibling) { |
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DeviceClass *dc = DEVICE_GET_CLASS(dev); |
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if (qdev_class_has_alias(dc) &&
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strcmp(qdev_class_get_alias(dc), elem) == 0) {
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return dev;
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} |
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} |
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return NULL; |
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} |
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static BusState *qbus_find_recursive(BusState *bus, const char *name, |
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const BusInfo *info)
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{ |
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DeviceState *dev; |
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BusState *child, *ret; |
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int match = 1; |
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if (name && (strcmp(bus->name, name) != 0)) { |
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match = 0;
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} |
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if (info && (bus->info != info)) {
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match = 0;
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} |
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if (match) {
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return bus;
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} |
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QTAILQ_FOREACH(dev, &bus->children, sibling) { |
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QLIST_FOREACH(child, &dev->child_bus, sibling) { |
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ret = qbus_find_recursive(child, name, info); |
293 |
if (ret) {
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return ret;
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} |
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} |
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} |
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return NULL; |
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} |
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static BusState *qbus_find(const char *path) |
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{ |
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DeviceState *dev; |
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BusState *bus; |
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char elem[128]; |
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int pos, len;
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/* find start element */
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if (path[0] == '/') { |
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bus = sysbus_get_default(); |
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pos = 0;
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} else {
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if (sscanf(path, "%127[^/]%n", elem, &len) != 1) { |
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assert(!path[0]);
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elem[0] = len = 0; |
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} |
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bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
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if (!bus) {
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qerror_report(QERR_BUS_NOT_FOUND, elem); |
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return NULL; |
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} |
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pos = len; |
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} |
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for (;;) {
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assert(path[pos] == '/' || !path[pos]);
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while (path[pos] == '/') { |
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pos++; |
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} |
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if (path[pos] == '\0') { |
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return bus;
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} |
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/* find device */
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if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
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assert(0);
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elem[0] = len = 0; |
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} |
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pos += len; |
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dev = qbus_find_dev(bus, elem); |
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if (!dev) {
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qerror_report(QERR_DEVICE_NOT_FOUND, elem); |
343 |
if (!monitor_cur_is_qmp()) {
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qbus_list_dev(bus); |
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} |
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return NULL; |
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} |
348 |
|
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assert(path[pos] == '/' || !path[pos]);
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while (path[pos] == '/') { |
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pos++; |
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} |
353 |
if (path[pos] == '\0') { |
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/* last specified element is a device. If it has exactly
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* one child bus accept it nevertheless */
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switch (dev->num_child_bus) {
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case 0: |
358 |
qerror_report(QERR_DEVICE_NO_BUS, elem); |
359 |
return NULL; |
360 |
case 1: |
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return QLIST_FIRST(&dev->child_bus);
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default:
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363 |
qerror_report(QERR_DEVICE_MULTIPLE_BUSSES, elem); |
364 |
if (!monitor_cur_is_qmp()) {
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qbus_list_bus(dev); |
366 |
} |
367 |
return NULL; |
368 |
} |
369 |
} |
370 |
|
371 |
/* find bus */
|
372 |
if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
373 |
assert(0);
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374 |
elem[0] = len = 0; |
375 |
} |
376 |
pos += len; |
377 |
bus = qbus_find_bus(dev, elem); |
378 |
if (!bus) {
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379 |
qerror_report(QERR_BUS_NOT_FOUND, elem); |
380 |
if (!monitor_cur_is_qmp()) {
|
381 |
qbus_list_bus(dev); |
382 |
} |
383 |
return NULL; |
384 |
} |
385 |
} |
386 |
} |
387 |
|
388 |
DeviceState *qdev_device_add(QemuOpts *opts) |
389 |
{ |
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ObjectClass *obj; |
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DeviceClass *k; |
392 |
const char *driver, *path, *id; |
393 |
DeviceState *qdev; |
394 |
BusState *bus; |
395 |
|
396 |
driver = qemu_opt_get(opts, "driver");
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397 |
if (!driver) {
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398 |
qerror_report(QERR_MISSING_PARAMETER, "driver");
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399 |
return NULL; |
400 |
} |
401 |
|
402 |
/* find driver */
|
403 |
obj = object_class_by_name(driver); |
404 |
if (!obj) {
|
405 |
const char *typename = find_typename_by_alias(driver); |
406 |
|
407 |
if (typename) {
|
408 |
driver = typename; |
409 |
obj = object_class_by_name(driver); |
410 |
} |
411 |
} |
412 |
|
413 |
if (!obj) {
|
414 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "device type"); |
415 |
return NULL; |
416 |
} |
417 |
|
418 |
k = DEVICE_CLASS(obj); |
419 |
|
420 |
/* find bus */
|
421 |
path = qemu_opt_get(opts, "bus");
|
422 |
if (path != NULL) { |
423 |
bus = qbus_find(path); |
424 |
if (!bus) {
|
425 |
return NULL; |
426 |
} |
427 |
if (bus->info != k->bus_info) {
|
428 |
qerror_report(QERR_BAD_BUS_FOR_DEVICE, |
429 |
driver, bus->info->name); |
430 |
return NULL; |
431 |
} |
432 |
} else {
|
433 |
bus = qbus_find_recursive(sysbus_get_default(), NULL, k->bus_info);
|
434 |
if (!bus) {
|
435 |
qerror_report(QERR_NO_BUS_FOR_DEVICE, |
436 |
driver, k->bus_info->name); |
437 |
return NULL; |
438 |
} |
439 |
} |
440 |
if (qdev_hotplug && !bus->allow_hotplug) {
|
441 |
qerror_report(QERR_BUS_NO_HOTPLUG, bus->name); |
442 |
return NULL; |
443 |
} |
444 |
|
445 |
if (!bus) {
|
446 |
bus = sysbus_get_default(); |
447 |
} |
448 |
|
449 |
/* create device, set properties */
|
450 |
qdev = DEVICE(object_new(driver)); |
451 |
qdev_set_parent_bus(qdev, bus); |
452 |
qdev_prop_set_globals(qdev); |
453 |
|
454 |
id = qemu_opts_id(opts); |
455 |
if (id) {
|
456 |
qdev->id = id; |
457 |
} |
458 |
if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) { |
459 |
qdev_free(qdev); |
460 |
return NULL; |
461 |
} |
462 |
if (qdev->id) {
|
463 |
object_property_add_child(qdev_get_peripheral(), qdev->id, |
464 |
OBJECT(qdev), NULL);
|
465 |
} else {
|
466 |
static int anon_count; |
467 |
gchar *name = g_strdup_printf("device[%d]", anon_count++);
|
468 |
object_property_add_child(qdev_get_peripheral_anon(), name, |
469 |
OBJECT(qdev), NULL);
|
470 |
g_free(name); |
471 |
} |
472 |
if (qdev_init(qdev) < 0) { |
473 |
qerror_report(QERR_DEVICE_INIT_FAILED, driver); |
474 |
return NULL; |
475 |
} |
476 |
qdev->opts = opts; |
477 |
return qdev;
|
478 |
} |
479 |
|
480 |
|
481 |
#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) |
482 |
static void qbus_print(Monitor *mon, BusState *bus, int indent); |
483 |
|
484 |
static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props, |
485 |
const char *prefix, int indent) |
486 |
{ |
487 |
if (!props)
|
488 |
return;
|
489 |
for (; props->name; props++) {
|
490 |
Error *err = NULL;
|
491 |
char *value;
|
492 |
char *legacy_name = g_strdup_printf("legacy-%s", props->name); |
493 |
if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) { |
494 |
value = object_property_get_str(OBJECT(dev), legacy_name, &err); |
495 |
} else {
|
496 |
value = object_property_print(OBJECT(dev), props->name, &err); |
497 |
} |
498 |
g_free(legacy_name); |
499 |
|
500 |
if (err) {
|
501 |
error_free(err); |
502 |
continue;
|
503 |
} |
504 |
qdev_printf("%s-prop: %s = %s\n", prefix, props->name,
|
505 |
value && *value ? value : "<null>");
|
506 |
g_free(value); |
507 |
} |
508 |
} |
509 |
|
510 |
static void qdev_print(Monitor *mon, DeviceState *dev, int indent) |
511 |
{ |
512 |
BusState *child; |
513 |
qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
|
514 |
dev->id ? dev->id : "");
|
515 |
indent += 2;
|
516 |
if (dev->num_gpio_in) {
|
517 |
qdev_printf("gpio-in %d\n", dev->num_gpio_in);
|
518 |
} |
519 |
if (dev->num_gpio_out) {
|
520 |
qdev_printf("gpio-out %d\n", dev->num_gpio_out);
|
521 |
} |
522 |
qdev_print_props(mon, dev, qdev_get_props(dev), "dev", indent);
|
523 |
qdev_print_props(mon, dev, dev->parent_bus->info->props, "bus", indent);
|
524 |
if (dev->parent_bus->info->print_dev)
|
525 |
dev->parent_bus->info->print_dev(mon, dev, indent); |
526 |
QLIST_FOREACH(child, &dev->child_bus, sibling) { |
527 |
qbus_print(mon, child, indent); |
528 |
} |
529 |
} |
530 |
|
531 |
static void qbus_print(Monitor *mon, BusState *bus, int indent) |
532 |
{ |
533 |
struct DeviceState *dev;
|
534 |
|
535 |
qdev_printf("bus: %s\n", bus->name);
|
536 |
indent += 2;
|
537 |
qdev_printf("type %s\n", bus->info->name);
|
538 |
QTAILQ_FOREACH(dev, &bus->children, sibling) { |
539 |
qdev_print(mon, dev, indent); |
540 |
} |
541 |
} |
542 |
#undef qdev_printf
|
543 |
|
544 |
void do_info_qtree(Monitor *mon)
|
545 |
{ |
546 |
if (sysbus_get_default())
|
547 |
qbus_print(mon, sysbus_get_default(), 0);
|
548 |
} |
549 |
|
550 |
void do_info_qdm(Monitor *mon)
|
551 |
{ |
552 |
object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, NULL); |
553 |
} |
554 |
|
555 |
int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data) |
556 |
{ |
557 |
QemuOpts *opts; |
558 |
|
559 |
opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict);
|
560 |
if (!opts) {
|
561 |
return -1; |
562 |
} |
563 |
if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
|
564 |
qemu_opts_del(opts); |
565 |
return 0; |
566 |
} |
567 |
if (!qdev_device_add(opts)) {
|
568 |
qemu_opts_del(opts); |
569 |
return -1; |
570 |
} |
571 |
return 0; |
572 |
} |
573 |
|
574 |
void qmp_device_del(const char *id, Error **errp) |
575 |
{ |
576 |
DeviceState *dev; |
577 |
|
578 |
dev = qdev_find_recursive(sysbus_get_default(), id); |
579 |
if (NULL == dev) { |
580 |
error_set(errp, QERR_DEVICE_NOT_FOUND, id); |
581 |
return;
|
582 |
} |
583 |
|
584 |
qdev_unplug(dev, errp); |
585 |
} |
586 |
|
587 |
void qdev_machine_init(void) |
588 |
{ |
589 |
qdev_get_peripheral_anon(); |
590 |
qdev_get_peripheral(); |
591 |
} |