| /* |
| * 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 2.1 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 "qemu/osdep.h" |
| #include "hw/sysbus.h" |
| #include "monitor/hmp.h" |
| #include "monitor/monitor.h" |
| #include "monitor/qdev.h" |
| #include "sysemu/arch_init.h" |
| #include "qapi/error.h" |
| #include "qapi/qapi-commands-qdev.h" |
| #include "qapi/qmp/dispatch.h" |
| #include "qapi/qmp/qdict.h" |
| #include "qapi/qmp/qerror.h" |
| #include "qapi/qmp/qstring.h" |
| #include "qapi/qobject-input-visitor.h" |
| #include "qemu/config-file.h" |
| #include "qemu/error-report.h" |
| #include "qemu/help_option.h" |
| #include "qemu/option.h" |
| #include "qemu/qemu-print.h" |
| #include "qemu/option_int.h" |
| #include "sysemu/block-backend.h" |
| #include "migration/misc.h" |
| #include "migration/migration.h" |
| #include "qemu/cutils.h" |
| #include "hw/qdev-properties.h" |
| #include "hw/clock.h" |
| #include "hw/boards.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; |
| |
| /* default virtio transport per architecture */ |
| #define QEMU_ARCH_VIRTIO_PCI (QEMU_ARCH_ALPHA | QEMU_ARCH_ARM | \ |
| QEMU_ARCH_HPPA | QEMU_ARCH_I386 | \ |
| QEMU_ARCH_MIPS | QEMU_ARCH_PPC | \ |
| QEMU_ARCH_RISCV | QEMU_ARCH_SH4 | \ |
| QEMU_ARCH_SPARC | QEMU_ARCH_XTENSA | \ |
| QEMU_ARCH_LOONGARCH) |
| #define QEMU_ARCH_VIRTIO_CCW (QEMU_ARCH_S390X) |
| #define QEMU_ARCH_VIRTIO_MMIO (QEMU_ARCH_M68K) |
| |
| /* Please keep this table sorted by typename. */ |
| static const QDevAlias qdev_alias_table[] = { |
| { "AC97", "ac97" }, /* -soundhw name */ |
| { "e1000", "e1000-82540em" }, |
| { "ES1370", "es1370" }, /* -soundhw name */ |
| { "ich9-ahci", "ahci" }, |
| { "lsi53c895a", "lsi" }, |
| { "virtio-9p-device", "virtio-9p", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-balloon-device", "virtio-balloon", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-balloon-pci", "virtio-balloon", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-blk-device", "virtio-blk", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-gpu-device", "virtio-gpu", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-gpu-gl-device", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-gpu-gl-pci", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-gpu-rutabaga-device", "virtio-gpu-rutabaga", |
| QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-gpu-rutabaga-pci", "virtio-gpu-rutabaga", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-input-host-device", "virtio-input-host", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-input-host-pci", "virtio-input-host", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-iommu-pci", "virtio-iommu", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-keyboard-device", "virtio-keyboard", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-keyboard-pci", "virtio-keyboard", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-mouse-device", "virtio-mouse", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-net-device", "virtio-net", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-net-ccw", "virtio-net", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-net-pci", "virtio-net", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-rng-device", "virtio-rng", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-scsi-device", "virtio-scsi", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-serial-device", "virtio-serial", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_VIRTIO_PCI}, |
| { "virtio-sound-device", "virtio-sound", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-sound-pci", "virtio-sound", QEMU_ARCH_VIRTIO_PCI }, |
| { "virtio-tablet-device", "virtio-tablet", QEMU_ARCH_VIRTIO_MMIO }, |
| { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_VIRTIO_CCW }, |
| { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_VIRTIO_PCI }, |
| { } |
| }; |
| |
| 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(DeviceClass *dc) |
| { |
| qemu_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc))); |
| if (dc->bus_type) { |
| qemu_printf(", bus %s", dc->bus_type); |
| } |
| if (qdev_class_has_alias(dc)) { |
| qemu_printf(", alias \"%s\"", qdev_class_get_alias(dc)); |
| } |
| if (dc->desc) { |
| qemu_printf(", desc \"%s\"", dc->desc); |
| } |
| if (!dc->user_creatable) { |
| qemu_printf(", no-user"); |
| } |
| qemu_printf("\n"); |
| } |
| |
| static void qdev_print_devinfos(bool show_no_user) |
| { |
| static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = { |
| [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub", |
| [DEVICE_CATEGORY_USB] = "USB", |
| [DEVICE_CATEGORY_STORAGE] = "Storage", |
| [DEVICE_CATEGORY_NETWORK] = "Network", |
| [DEVICE_CATEGORY_INPUT] = "Input", |
| [DEVICE_CATEGORY_DISPLAY] = "Display", |
| [DEVICE_CATEGORY_SOUND] = "Sound", |
| [DEVICE_CATEGORY_MISC] = "Misc", |
| [DEVICE_CATEGORY_CPU] = "CPU", |
| [DEVICE_CATEGORY_WATCHDOG]= "Watchdog", |
| [DEVICE_CATEGORY_MAX] = "Uncategorized", |
| }; |
| GSList *list, *elt; |
| int i; |
| bool cat_printed; |
| |
| module_load_qom_all(); |
| list = object_class_get_list_sorted(TYPE_DEVICE, false); |
| |
| for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) { |
| cat_printed = false; |
| for (elt = list; elt; elt = elt->next) { |
| DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data, |
| TYPE_DEVICE); |
| if ((i < DEVICE_CATEGORY_MAX |
| ? !test_bit(i, dc->categories) |
| : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX)) |
| || (!show_no_user |
| && !dc->user_creatable)) { |
| continue; |
| } |
| if (!cat_printed) { |
| qemu_printf("%s%s devices:\n", i ? "\n" : "", cat_name[i]); |
| cat_printed = true; |
| } |
| qdev_print_devinfo(dc); |
| } |
| } |
| |
| g_slist_free(list); |
| } |
| |
| 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; |
| } |
| |
| static DeviceClass *qdev_get_device_class(const char **driver, Error **errp) |
| { |
| ObjectClass *oc; |
| DeviceClass *dc; |
| const char *original_name = *driver; |
| |
| oc = module_object_class_by_name(*driver); |
| if (!oc) { |
| const char *typename = find_typename_by_alias(*driver); |
| |
| if (typename) { |
| *driver = typename; |
| oc = module_object_class_by_name(*driver); |
| } |
| } |
| |
| if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) { |
| if (*driver != original_name) { |
| error_setg(errp, "'%s' (alias '%s') is not a valid device model" |
| " name", original_name, *driver); |
| } else { |
| error_setg(errp, "'%s' is not a valid device model name", *driver); |
| } |
| return NULL; |
| } |
| |
| if (object_class_is_abstract(oc)) { |
| error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", |
| "a non-abstract device type"); |
| return NULL; |
| } |
| |
| dc = DEVICE_CLASS(oc); |
| if (!dc->user_creatable || |
| (phase_check(PHASE_MACHINE_READY) && !dc->hotpluggable)) { |
| error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", |
| "a pluggable device type"); |
| return NULL; |
| } |
| |
| if (object_class_dynamic_cast(oc, TYPE_SYS_BUS_DEVICE)) { |
| /* sysbus devices need to be allowed by the machine */ |
| MachineClass *mc = MACHINE_CLASS(object_get_class(qdev_get_machine())); |
| if (!device_type_is_dynamic_sysbus(mc, *driver)) { |
| error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", |
| "a dynamic sysbus device type for the machine"); |
| return NULL; |
| } |
| } |
| |
| return dc; |
| } |
| |
| |
| int qdev_device_help(QemuOpts *opts) |
| { |
| Error *local_err = NULL; |
| const char *driver; |
| ObjectPropertyInfoList *prop_list; |
| ObjectPropertyInfoList *prop; |
| GPtrArray *array; |
| int i; |
| |
| driver = qemu_opt_get(opts, "driver"); |
| if (driver && is_help_option(driver)) { |
| qdev_print_devinfos(false); |
| return 1; |
| } |
| |
| if (!driver || !qemu_opt_has_help_opt(opts)) { |
| return 0; |
| } |
| |
| if (!object_class_by_name(driver)) { |
| const char *typename = find_typename_by_alias(driver); |
| |
| if (typename) { |
| driver = typename; |
| } |
| } |
| |
| prop_list = qmp_device_list_properties(driver, &local_err); |
| if (local_err) { |
| goto error; |
| } |
| |
| if (prop_list) { |
| qemu_printf("%s options:\n", driver); |
| } else { |
| qemu_printf("There are no options for %s.\n", driver); |
| } |
| array = g_ptr_array_new(); |
| for (prop = prop_list; prop; prop = prop->next) { |
| g_ptr_array_add(array, |
| object_property_help(prop->value->name, |
| prop->value->type, |
| prop->value->default_value, |
| prop->value->description)); |
| } |
| g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0); |
| for (i = 0; i < array->len; i++) { |
| qemu_printf("%s\n", (char *)array->pdata[i]); |
| } |
| g_ptr_array_set_free_func(array, g_free); |
| g_ptr_array_free(array, true); |
| qapi_free_ObjectPropertyInfoList(prop_list); |
| return 1; |
| |
| error: |
| error_report_err(local_err); |
| 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_error_append_bus_list_hint(DeviceState *dev, |
| Error *const *errp) |
| { |
| BusState *child; |
| const char *sep = " "; |
| |
| error_append_hint(errp, "child buses at \"%s\":", |
| dev->id ? dev->id : object_get_typename(OBJECT(dev))); |
| QLIST_FOREACH(child, &dev->child_bus, sibling) { |
| error_append_hint(errp, "%s\"%s\"", sep, child->name); |
| sep = ", "; |
| } |
| error_append_hint(errp, "\n"); |
| } |
| |
| static void qbus_error_append_dev_list_hint(BusState *bus, |
| Error *const *errp) |
| { |
| BusChild *kid; |
| const char *sep = " "; |
| |
| error_append_hint(errp, "devices at \"%s\":", bus->name); |
| QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| DeviceState *dev = kid->child; |
| error_append_hint(errp, "%s\"%s\"", sep, |
| object_get_typename(OBJECT(dev))); |
| if (dev->id) { |
| error_append_hint(errp, "/\"%s\"", dev->id); |
| } |
| sep = ", "; |
| } |
| error_append_hint(errp, "\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 inline bool qbus_is_full(BusState *bus) |
| { |
| BusClass *bus_class; |
| |
| if (bus->full) { |
| return true; |
| } |
| bus_class = BUS_GET_CLASS(bus); |
| return bus_class->max_dev && bus->num_children >= bus_class->max_dev; |
| } |
| |
| /* |
| * Search the tree rooted at @bus for a bus. |
| * If @name, search for a bus with that name. Note that bus names |
| * need not be unique. Yes, that's screwed up. |
| * Else search for a bus that is a subtype of @bus_typename. |
| * If more than one exists, prefer one that can take another device. |
| * Return the bus if found, else %NULL. |
| */ |
| static BusState *qbus_find_recursive(BusState *bus, const char *name, |
| const char *bus_typename) |
| { |
| BusChild *kid; |
| BusState *pick, *child, *ret; |
| bool match; |
| |
| assert(name || bus_typename); |
| if (name) { |
| match = !strcmp(bus->name, name); |
| } else { |
| match = !!object_dynamic_cast(OBJECT(bus), bus_typename); |
| } |
| |
| if (match && !qbus_is_full(bus)) { |
| return bus; /* root matches and isn't full */ |
| } |
| |
| pick = match ? bus : NULL; |
| |
| 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 && !qbus_is_full(ret)) { |
| return ret; /* a descendant matches and isn't full */ |
| } |
| if (ret && !pick) { |
| pick = ret; |
| } |
| } |
| } |
| |
| /* root or a descendant matches, but is full */ |
| return pick; |
| } |
| |
| static BusState *qbus_find(const char *path, Error **errp) |
| { |
| 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) { |
| error_setg(errp, "Bus '%s' not found", elem); |
| return NULL; |
| } |
| pos = len; |
| } |
| |
| for (;;) { |
| assert(path[pos] == '/' || !path[pos]); |
| while (path[pos] == '/') { |
| pos++; |
| } |
| if (path[pos] == '\0') { |
| break; |
| } |
| |
| /* find device */ |
| if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
| g_assert_not_reached(); |
| elem[0] = len = 0; |
| } |
| pos += len; |
| dev = qbus_find_dev(bus, elem); |
| if (!dev) { |
| error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| "Device '%s' not found", elem); |
| qbus_error_append_dev_list_hint(bus, errp); |
| 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 */ |
| if (dev->num_child_bus == 1) { |
| bus = QLIST_FIRST(&dev->child_bus); |
| break; |
| } |
| if (dev->num_child_bus) { |
| error_setg(errp, "Device '%s' has multiple child buses", |
| elem); |
| qbus_error_append_bus_list_hint(dev, errp); |
| } else { |
| error_setg(errp, "Device '%s' has no child bus", elem); |
| } |
| return NULL; |
| } |
| |
| /* find bus */ |
| if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
| g_assert_not_reached(); |
| elem[0] = len = 0; |
| } |
| pos += len; |
| bus = qbus_find_bus(dev, elem); |
| if (!bus) { |
| error_setg(errp, "Bus '%s' not found", elem); |
| qbus_error_append_bus_list_hint(dev, errp); |
| return NULL; |
| } |
| } |
| |
| if (qbus_is_full(bus)) { |
| error_setg(errp, "Bus '%s' is full", path); |
| return NULL; |
| } |
| return bus; |
| } |
| |
| /* Takes ownership of @id, will be freed when deleting the device */ |
| const char *qdev_set_id(DeviceState *dev, char *id, Error **errp) |
| { |
| ObjectProperty *prop; |
| |
| assert(!dev->id && !dev->realized); |
| |
| /* |
| * object_property_[try_]add_child() below will assert the device |
| * has no parent |
| */ |
| if (id) { |
| prop = object_property_try_add_child(qdev_get_peripheral(), id, |
| OBJECT(dev), NULL); |
| if (prop) { |
| dev->id = id; |
| } else { |
| error_setg(errp, "Duplicate device ID '%s'", id); |
| g_free(id); |
| return NULL; |
| } |
| } else { |
| static int anon_count; |
| gchar *name = g_strdup_printf("device[%d]", anon_count++); |
| prop = object_property_add_child(qdev_get_peripheral_anon(), name, |
| OBJECT(dev)); |
| g_free(name); |
| } |
| |
| return prop->name; |
| } |
| |
| DeviceState *qdev_device_add_from_qdict(const QDict *opts, |
| bool from_json, Error **errp) |
| { |
| ERRP_GUARD(); |
| DeviceClass *dc; |
| const char *driver, *path; |
| char *id; |
| DeviceState *dev = NULL; |
| BusState *bus = NULL; |
| |
| driver = qdict_get_try_str(opts, "driver"); |
| if (!driver) { |
| error_setg(errp, QERR_MISSING_PARAMETER, "driver"); |
| return NULL; |
| } |
| |
| /* find driver */ |
| dc = qdev_get_device_class(&driver, errp); |
| if (!dc) { |
| return NULL; |
| } |
| |
| /* find bus */ |
| path = qdict_get_try_str(opts, "bus"); |
| if (path != NULL) { |
| bus = qbus_find(path, errp); |
| if (!bus) { |
| return NULL; |
| } |
| if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) { |
| error_setg(errp, "Device '%s' can't go on %s bus", |
| driver, object_get_typename(OBJECT(bus))); |
| return NULL; |
| } |
| } else if (dc->bus_type != NULL) { |
| bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type); |
| if (!bus || qbus_is_full(bus)) { |
| error_setg(errp, "No '%s' bus found for device '%s'", |
| dc->bus_type, driver); |
| return NULL; |
| } |
| } |
| |
| if (qdev_should_hide_device(opts, from_json, errp)) { |
| if (bus && !qbus_is_hotpluggable(bus)) { |
| error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name); |
| } |
| return NULL; |
| } else if (*errp) { |
| return NULL; |
| } |
| |
| if (phase_check(PHASE_MACHINE_READY) && bus && !qbus_is_hotpluggable(bus)) { |
| error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name); |
| return NULL; |
| } |
| |
| if (!migration_is_idle()) { |
| error_setg(errp, "device_add not allowed while migrating"); |
| return NULL; |
| } |
| |
| /* create device */ |
| dev = qdev_new(driver); |
| |
| /* Check whether the hotplug is allowed by the machine */ |
| if (phase_check(PHASE_MACHINE_READY)) { |
| if (!qdev_hotplug_allowed(dev, errp)) { |
| goto err_del_dev; |
| } |
| |
| if (!bus && !qdev_get_machine_hotplug_handler(dev)) { |
| /* No bus, no machine hotplug handler --> device is not hotpluggable */ |
| error_setg(errp, "Device '%s' can not be hotplugged on this machine", |
| driver); |
| goto err_del_dev; |
| } |
| } |
| |
| /* |
| * set dev's parent and register its id. |
| * If it fails it means the id is already taken. |
| */ |
| id = g_strdup(qdict_get_try_str(opts, "id")); |
| if (!qdev_set_id(dev, id, errp)) { |
| goto err_del_dev; |
| } |
| |
| /* set properties */ |
| dev->opts = qdict_clone_shallow(opts); |
| qdict_del(dev->opts, "driver"); |
| qdict_del(dev->opts, "bus"); |
| qdict_del(dev->opts, "id"); |
| |
| object_set_properties_from_keyval(&dev->parent_obj, dev->opts, from_json, |
| errp); |
| if (*errp) { |
| goto err_del_dev; |
| } |
| |
| if (!qdev_realize(dev, bus, errp)) { |
| goto err_del_dev; |
| } |
| return dev; |
| |
| err_del_dev: |
| if (dev) { |
| object_unparent(OBJECT(dev)); |
| object_unref(OBJECT(dev)); |
| } |
| return NULL; |
| } |
| |
| /* Takes ownership of @opts on success */ |
| DeviceState *qdev_device_add(QemuOpts *opts, Error **errp) |
| { |
| QDict *qdict = qemu_opts_to_qdict(opts, NULL); |
| DeviceState *ret; |
| |
| ret = qdev_device_add_from_qdict(qdict, false, errp); |
| if (ret) { |
| qemu_opts_del(opts); |
| } |
| qobject_unref(qdict); |
| return ret; |
| } |
| |
| #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++) { |
| 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, NULL); |
| } else { |
| value = object_property_print(OBJECT(dev), props->name, true, |
| NULL); |
| } |
| g_free(legacy_name); |
| |
| if (!value) { |
| continue; |
| } |
| qdev_printf("%s = %s\n", props->name, |
| *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; |
| NamedGPIOList *ngl; |
| NamedClockList *ncl; |
| |
| qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)), |
| dev->id ? dev->id : ""); |
| indent += 2; |
| QLIST_FOREACH(ngl, &dev->gpios, node) { |
| if (ngl->num_in) { |
| qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "", |
| ngl->num_in); |
| } |
| if (ngl->num_out) { |
| qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "", |
| ngl->num_out); |
| } |
| } |
| QLIST_FOREACH(ncl, &dev->clocks, node) { |
| g_autofree char *freq_str = clock_display_freq(ncl->clock); |
| qdev_printf("clock-%s%s \"%s\" freq_hz=%s\n", |
| ncl->output ? "out" : "in", |
| ncl->alias ? " (alias)" : "", |
| ncl->name, freq_str); |
| } |
| 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 hmp_info_qtree(Monitor *mon, const QDict *qdict) |
| { |
| if (sysbus_get_default()) |
| qbus_print(mon, sysbus_get_default(), 0); |
| } |
| |
| void hmp_info_qdm(Monitor *mon, const QDict *qdict) |
| { |
| qdev_print_devinfos(true); |
| } |
| |
| void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp) |
| { |
| QemuOpts *opts; |
| DeviceState *dev; |
| |
| opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, errp); |
| if (!opts) { |
| return; |
| } |
| if (!monitor_cur_is_qmp() && qdev_device_help(opts)) { |
| qemu_opts_del(opts); |
| return; |
| } |
| dev = qdev_device_add(opts, errp); |
| |
| /* |
| * Drain all pending RCU callbacks. This is done because |
| * some bus related operations can delay a device removal |
| * (in this case this can happen if device is added and then |
| * removed due to a configuration error) |
| * to a RCU callback, but user might expect that this interface |
| * will finish its job completely once qmp command returns result |
| * to the user |
| */ |
| drain_call_rcu(); |
| |
| if (!dev) { |
| qemu_opts_del(opts); |
| return; |
| } |
| object_unref(OBJECT(dev)); |
| } |
| |
| static DeviceState *find_device_state(const char *id, Error **errp) |
| { |
| Object *obj = object_resolve_path_at(qdev_get_peripheral(), id); |
| DeviceState *dev; |
| |
| if (!obj) { |
| error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| "Device '%s' not found", id); |
| return NULL; |
| } |
| |
| dev = (DeviceState *)object_dynamic_cast(obj, TYPE_DEVICE); |
| if (!dev) { |
| error_setg(errp, "%s is not a hotpluggable device", id); |
| return NULL; |
| } |
| |
| return dev; |
| } |
| |
| void qdev_unplug(DeviceState *dev, Error **errp) |
| { |
| DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| HotplugHandler *hotplug_ctrl; |
| HotplugHandlerClass *hdc; |
| Error *local_err = NULL; |
| |
| if (qdev_unplug_blocked(dev, errp)) { |
| return; |
| } |
| |
| if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) { |
| error_setg(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
| return; |
| } |
| |
| if (!dc->hotpluggable) { |
| error_setg(errp, QERR_DEVICE_NO_HOTPLUG, |
| object_get_typename(OBJECT(dev))); |
| return; |
| } |
| |
| if (!migration_is_idle() && !dev->allow_unplug_during_migration) { |
| error_setg(errp, "device_del not allowed while migrating"); |
| return; |
| } |
| |
| qdev_hot_removed = true; |
| |
| hotplug_ctrl = qdev_get_hotplug_handler(dev); |
| /* hotpluggable device MUST have HotplugHandler, if it doesn't |
| * then something is very wrong with it */ |
| g_assert(hotplug_ctrl); |
| |
| /* If device supports async unplug just request it to be done, |
| * otherwise just remove it synchronously */ |
| hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl); |
| if (hdc->unplug_request) { |
| hotplug_handler_unplug_request(hotplug_ctrl, dev, &local_err); |
| } else { |
| hotplug_handler_unplug(hotplug_ctrl, dev, &local_err); |
| if (!local_err) { |
| object_unparent(OBJECT(dev)); |
| } |
| } |
| error_propagate(errp, local_err); |
| } |
| |
| void qmp_device_del(const char *id, Error **errp) |
| { |
| DeviceState *dev = find_device_state(id, errp); |
| if (dev != NULL) { |
| if (dev->pending_deleted_event && |
| (dev->pending_deleted_expires_ms == 0 || |
| dev->pending_deleted_expires_ms > qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL))) { |
| error_setg(errp, "Device %s is already in the " |
| "process of unplug", id); |
| return; |
| } |
| |
| qdev_unplug(dev, errp); |
| } |
| } |
| |
| void hmp_device_add(Monitor *mon, const QDict *qdict) |
| { |
| Error *err = NULL; |
| |
| qmp_device_add((QDict *)qdict, NULL, &err); |
| hmp_handle_error(mon, err); |
| } |
| |
| void hmp_device_del(Monitor *mon, const QDict *qdict) |
| { |
| const char *id = qdict_get_str(qdict, "id"); |
| Error *err = NULL; |
| |
| qmp_device_del(id, &err); |
| hmp_handle_error(mon, err); |
| } |
| |
| void device_add_completion(ReadLineState *rs, int nb_args, const char *str) |
| { |
| GSList *list, *elt; |
| size_t len; |
| |
| if (nb_args != 2) { |
| return; |
| } |
| |
| len = strlen(str); |
| readline_set_completion_index(rs, len); |
| list = elt = object_class_get_list(TYPE_DEVICE, false); |
| while (elt) { |
| DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data, |
| TYPE_DEVICE); |
| |
| if (dc->user_creatable) { |
| readline_add_completion_of(rs, str, |
| object_class_get_name(OBJECT_CLASS(dc))); |
| } |
| elt = elt->next; |
| } |
| g_slist_free(list); |
| } |
| |
| static int qdev_add_hotpluggable_device(Object *obj, void *opaque) |
| { |
| GSList **list = opaque; |
| DeviceState *dev = (DeviceState *)object_dynamic_cast(obj, TYPE_DEVICE); |
| |
| if (dev == NULL) { |
| return 0; |
| } |
| |
| if (dev->realized && object_property_get_bool(obj, "hotpluggable", NULL)) { |
| *list = g_slist_append(*list, dev); |
| } |
| |
| return 0; |
| } |
| |
| static GSList *qdev_build_hotpluggable_device_list(Object *peripheral) |
| { |
| GSList *list = NULL; |
| |
| object_child_foreach(peripheral, qdev_add_hotpluggable_device, &list); |
| |
| return list; |
| } |
| |
| static void peripheral_device_del_completion(ReadLineState *rs, |
| const char *str) |
| { |
| Object *peripheral = container_get(qdev_get_machine(), "/peripheral"); |
| GSList *list, *item; |
| |
| list = qdev_build_hotpluggable_device_list(peripheral); |
| if (!list) { |
| return; |
| } |
| |
| for (item = list; item; item = g_slist_next(item)) { |
| DeviceState *dev = item->data; |
| |
| if (dev->id) { |
| readline_add_completion_of(rs, str, dev->id); |
| } |
| } |
| |
| g_slist_free(list); |
| } |
| |
| void device_del_completion(ReadLineState *rs, int nb_args, const char *str) |
| { |
| if (nb_args != 2) { |
| return; |
| } |
| |
| readline_set_completion_index(rs, strlen(str)); |
| peripheral_device_del_completion(rs, str); |
| } |
| |
| BlockBackend *blk_by_qdev_id(const char *id, Error **errp) |
| { |
| DeviceState *dev; |
| BlockBackend *blk; |
| |
| GLOBAL_STATE_CODE(); |
| |
| dev = find_device_state(id, errp); |
| if (dev == NULL) { |
| return NULL; |
| } |
| |
| blk = blk_by_dev(dev); |
| if (!blk) { |
| error_setg(errp, "Device does not have a block device backend"); |
| } |
| return blk; |
| } |
| |
| 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] == '=') { |
| opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort); |
| qemu_opt_set(opts, "driver", driver, &error_abort); |
| qemu_opt_set(opts, "property", property, &error_abort); |
| qemu_opt_set(opts, "value", str + offset + 1, &error_abort); |
| return 0; |
| } |
| |
| opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false); |
| if (!opts) { |
| return -1; |
| } |
| if (!qemu_opt_get(opts, "driver") |
| || !qemu_opt_get(opts, "property") |
| || !qemu_opt_get(opts, "value")) { |
| error_report("options 'driver', 'property', and 'value'" |
| " are required"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| bool qmp_command_available(const QmpCommand *cmd, Error **errp) |
| { |
| if (!phase_check(PHASE_MACHINE_READY) && |
| !(cmd->options & QCO_ALLOW_PRECONFIG)) { |
| error_setg(errp, "The command '%s' is permitted only after machine initialization has completed", |
| cmd->name); |
| return false; |
| } |
| return true; |
| } |
