root / hw / qdev-monitor.c @ 56f9107e
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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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/*
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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->parse) {
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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->parse) {
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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("/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("/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); |
292 |
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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} |
323 |
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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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} |
332 |
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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); |
340 |
if (!dev) {
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qerror_report(QERR_DEVICE_NOT_FOUND, elem); |
342 |
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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} |
347 |
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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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} |
352 |
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: |
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qerror_report(QERR_DEVICE_NO_BUS, elem); |
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return NULL; |
359 |
case 1: |
360 |
return QLIST_FIRST(&dev->child_bus);
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default:
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qerror_report(QERR_DEVICE_MULTIPLE_BUSSES, elem); |
363 |
if (!monitor_cur_is_qmp()) {
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qbus_list_bus(dev); |
365 |
} |
366 |
return NULL; |
367 |
} |
368 |
} |
369 |
|
370 |
/* find bus */
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371 |
if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
372 |
assert(0);
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elem[0] = len = 0; |
374 |
} |
375 |
pos += len; |
376 |
bus = qbus_find_bus(dev, elem); |
377 |
if (!bus) {
|
378 |
qerror_report(QERR_BUS_NOT_FOUND, elem); |
379 |
if (!monitor_cur_is_qmp()) {
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380 |
qbus_list_bus(dev); |
381 |
} |
382 |
return NULL; |
383 |
} |
384 |
} |
385 |
} |
386 |
|
387 |
DeviceState *qdev_device_add(QemuOpts *opts) |
388 |
{ |
389 |
ObjectClass *obj; |
390 |
DeviceClass *k; |
391 |
const char *driver, *path, *id; |
392 |
DeviceState *qdev; |
393 |
BusState *bus; |
394 |
|
395 |
driver = qemu_opt_get(opts, "driver");
|
396 |
if (!driver) {
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397 |
qerror_report(QERR_MISSING_PARAMETER, "driver");
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398 |
return NULL; |
399 |
} |
400 |
|
401 |
/* find driver */
|
402 |
obj = object_class_by_name(driver); |
403 |
if (!obj) {
|
404 |
const char *typename = find_typename_by_alias(driver); |
405 |
|
406 |
if (typename) {
|
407 |
driver = typename; |
408 |
obj = object_class_by_name(driver); |
409 |
} |
410 |
} |
411 |
|
412 |
if (!obj) {
|
413 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "device type"); |
414 |
return NULL; |
415 |
} |
416 |
|
417 |
k = DEVICE_CLASS(obj); |
418 |
|
419 |
/* find bus */
|
420 |
path = qemu_opt_get(opts, "bus");
|
421 |
if (path != NULL) { |
422 |
bus = qbus_find(path); |
423 |
if (!bus) {
|
424 |
return NULL; |
425 |
} |
426 |
if (bus->info != k->bus_info) {
|
427 |
qerror_report(QERR_BAD_BUS_FOR_DEVICE, |
428 |
driver, bus->info->name); |
429 |
return NULL; |
430 |
} |
431 |
} else {
|
432 |
bus = qbus_find_recursive(sysbus_get_default(), NULL, k->bus_info);
|
433 |
if (!bus) {
|
434 |
qerror_report(QERR_NO_BUS_FOR_DEVICE, |
435 |
driver, k->bus_info->name); |
436 |
return NULL; |
437 |
} |
438 |
} |
439 |
if (qdev_hotplug && !bus->allow_hotplug) {
|
440 |
qerror_report(QERR_BUS_NO_HOTPLUG, bus->name); |
441 |
return NULL; |
442 |
} |
443 |
|
444 |
if (!bus) {
|
445 |
bus = sysbus_get_default(); |
446 |
} |
447 |
|
448 |
/* create device, set properties */
|
449 |
qdev = DEVICE(object_new(driver)); |
450 |
qdev_set_parent_bus(qdev, bus); |
451 |
qdev_prop_set_globals(qdev); |
452 |
|
453 |
id = qemu_opts_id(opts); |
454 |
if (id) {
|
455 |
qdev->id = id; |
456 |
} |
457 |
if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) { |
458 |
qdev_free(qdev); |
459 |
return NULL; |
460 |
} |
461 |
if (qdev->id) {
|
462 |
object_property_add_child(qdev_get_peripheral(), qdev->id, |
463 |
OBJECT(qdev), NULL);
|
464 |
} else {
|
465 |
static int anon_count; |
466 |
gchar *name = g_strdup_printf("device[%d]", anon_count++);
|
467 |
object_property_add_child(qdev_get_peripheral_anon(), name, |
468 |
OBJECT(qdev), NULL);
|
469 |
g_free(name); |
470 |
} |
471 |
if (qdev_init(qdev) < 0) { |
472 |
qerror_report(QERR_DEVICE_INIT_FAILED, driver); |
473 |
return NULL; |
474 |
} |
475 |
qdev->opts = opts; |
476 |
return qdev;
|
477 |
} |
478 |
|
479 |
|
480 |
#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) |
481 |
static void qbus_print(Monitor *mon, BusState *bus, int indent); |
482 |
|
483 |
static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props, |
484 |
const char *prefix, int indent) |
485 |
{ |
486 |
if (!props)
|
487 |
return;
|
488 |
for (; props->name; props++) {
|
489 |
Error *err = NULL;
|
490 |
char *value;
|
491 |
char *legacy_name = g_strdup_printf("legacy-%s", props->name); |
492 |
if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) { |
493 |
value = object_property_get_str(OBJECT(dev), legacy_name, &err); |
494 |
} else {
|
495 |
value = object_property_get_str(OBJECT(dev), props->name, &err); |
496 |
} |
497 |
g_free(legacy_name); |
498 |
|
499 |
if (err) {
|
500 |
error_free(err); |
501 |
continue;
|
502 |
} |
503 |
qdev_printf("%s-prop: %s = %s\n", prefix, props->name,
|
504 |
value && *value ? value : "<null>");
|
505 |
g_free(value); |
506 |
} |
507 |
} |
508 |
|
509 |
static void qdev_print(Monitor *mon, DeviceState *dev, int indent) |
510 |
{ |
511 |
BusState *child; |
512 |
qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
|
513 |
dev->id ? dev->id : "");
|
514 |
indent += 2;
|
515 |
if (dev->num_gpio_in) {
|
516 |
qdev_printf("gpio-in %d\n", dev->num_gpio_in);
|
517 |
} |
518 |
if (dev->num_gpio_out) {
|
519 |
qdev_printf("gpio-out %d\n", dev->num_gpio_out);
|
520 |
} |
521 |
qdev_print_props(mon, dev, qdev_get_props(dev), "dev", indent);
|
522 |
qdev_print_props(mon, dev, dev->parent_bus->info->props, "bus", indent);
|
523 |
if (dev->parent_bus->info->print_dev)
|
524 |
dev->parent_bus->info->print_dev(mon, dev, indent); |
525 |
QLIST_FOREACH(child, &dev->child_bus, sibling) { |
526 |
qbus_print(mon, child, indent); |
527 |
} |
528 |
} |
529 |
|
530 |
static void qbus_print(Monitor *mon, BusState *bus, int indent) |
531 |
{ |
532 |
struct DeviceState *dev;
|
533 |
|
534 |
qdev_printf("bus: %s\n", bus->name);
|
535 |
indent += 2;
|
536 |
qdev_printf("type %s\n", bus->info->name);
|
537 |
QTAILQ_FOREACH(dev, &bus->children, sibling) { |
538 |
qdev_print(mon, dev, indent); |
539 |
} |
540 |
} |
541 |
#undef qdev_printf
|
542 |
|
543 |
void do_info_qtree(Monitor *mon)
|
544 |
{ |
545 |
if (sysbus_get_default())
|
546 |
qbus_print(mon, sysbus_get_default(), 0);
|
547 |
} |
548 |
|
549 |
void do_info_qdm(Monitor *mon)
|
550 |
{ |
551 |
object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, NULL); |
552 |
} |
553 |
|
554 |
int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data) |
555 |
{ |
556 |
QemuOpts *opts; |
557 |
|
558 |
opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict);
|
559 |
if (!opts) {
|
560 |
return -1; |
561 |
} |
562 |
if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
|
563 |
qemu_opts_del(opts); |
564 |
return 0; |
565 |
} |
566 |
if (!qdev_device_add(opts)) {
|
567 |
qemu_opts_del(opts); |
568 |
return -1; |
569 |
} |
570 |
return 0; |
571 |
} |
572 |
|
573 |
int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
574 |
{ |
575 |
const char *id = qdict_get_str(qdict, "id"); |
576 |
Error *local_err = NULL;
|
577 |
DeviceState *dev; |
578 |
|
579 |
dev = qdev_find_recursive(sysbus_get_default(), id); |
580 |
if (NULL == dev) { |
581 |
qerror_report(QERR_DEVICE_NOT_FOUND, id); |
582 |
return -1; |
583 |
} |
584 |
|
585 |
qdev_unplug(dev, &local_err); |
586 |
if (error_is_set(&local_err)) {
|
587 |
qerror_report_err(local_err); |
588 |
error_free(local_err); |
589 |
return -1; |
590 |
} |
591 |
|
592 |
return 0; |
593 |
} |
594 |
|
595 |
void qdev_machine_init(void) |
596 |
{ |
597 |
qdev_get_peripheral_anon(); |
598 |
qdev_get_peripheral(); |
599 |
} |