diff options
Diffstat (limited to 'src/qdev-monitor.c')
| -rw-r--r-- | src/qdev-monitor.c | 863 |
1 files changed, 863 insertions, 0 deletions
diff --git a/src/qdev-monitor.c b/src/qdev-monitor.c new file mode 100644 index 0000000..a35098f --- /dev/null +++ b/src/qdev-monitor.c @@ -0,0 +1,863 @@ +/* + * Dynamic device configuration and creation. + * + * Copyright (c) 2009 CodeSourcery + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "hw/qdev.h" +#include "hw/sysbus.h" +#include "monitor/monitor.h" +#include "monitor/qdev.h" +#include "qmp-commands.h" +#include "sysemu/arch_init.h" +#include "qapi/qmp/qerror.h" +#include "qemu/config-file.h" +#include "qemu/error-report.h" + +/* + * Aliases were a bad idea from the start. Let's keep them + * from spreading further. + */ +typedef struct QDevAlias +{ + const char *typename; + const char *alias; + uint32_t arch_mask; +} QDevAlias; + +static const QDevAlias qdev_alias_table[] = { + { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, + { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, + { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, + { "virtio-balloon-pci", "virtio-balloon", + QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, + { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_S390X }, + { "virtio-net-ccw", "virtio-net", QEMU_ARCH_S390X }, + { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_S390X }, + { "lsi53c895a", "lsi" }, + { "ich9-ahci", "ahci" }, + { "kvm-pci-assign", "pci-assign" }, + { "e1000", "e1000-82540em" }, + { } +}; + +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) +{ + error_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc))); + if (dc->bus_type) { + error_printf(", bus %s", dc->bus_type); + } + if (qdev_class_has_alias(dc)) { + error_printf(", alias \"%s\"", qdev_class_get_alias(dc)); + } + if (dc->desc) { + error_printf(", desc \"%s\"", dc->desc); + } + if (dc->cannot_instantiate_with_device_add_yet) { + error_printf(", no-user"); + } + error_printf("\n"); +} + +static gint devinfo_cmp(gconstpointer a, gconstpointer b) +{ + return strcasecmp(object_class_get_name((ObjectClass *)a), + object_class_get_name((ObjectClass *)b)); +} + +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_MAX] = "Uncategorized", + }; + GSList *list, *elt; + int i; + bool cat_printed; + + list = g_slist_sort(object_class_get_list(TYPE_DEVICE, false), + devinfo_cmp); + + 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->cannot_instantiate_with_device_add_yet)) { + continue; + } + if (!cat_printed) { + error_printf("%s%s devices:\n", i ? "\n" : "", + cat_name[i]); + cat_printed = true; + } + qdev_print_devinfo(dc); + } + } + + g_slist_free(list); +} + +static int set_property(void *opaque, const char *name, const char *value, + Error **errp) +{ + Object *obj = opaque; + Error *err = NULL; + + if (strcmp(name, "driver") == 0) + return 0; + if (strcmp(name, "bus") == 0) + return 0; + + object_property_parse(obj, value, name, &err); + if (err != NULL) { + error_propagate(errp, err); + return -1; + } + return 0; +} + +static const char *find_typename_by_alias(const char *alias) +{ + int i; + + for (i = 0; qdev_alias_table[i].alias; i++) { + if (qdev_alias_table[i].arch_mask && + !(qdev_alias_table[i].arch_mask & arch_type)) { + continue; + } + + if (strcmp(qdev_alias_table[i].alias, alias) == 0) { + return qdev_alias_table[i].typename; + } + } + + return NULL; +} + +static DeviceClass *qdev_get_device_class(const char **driver, Error **errp) +{ + ObjectClass *oc; + DeviceClass *dc; + + oc = object_class_by_name(*driver); + if (!oc) { + const char *typename = find_typename_by_alias(*driver); + + if (typename) { + *driver = typename; + oc = object_class_by_name(*driver); + } + } + + if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) { + 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", + "non-abstract device type"); + return NULL; + } + + dc = DEVICE_CLASS(oc); + if (dc->cannot_instantiate_with_device_add_yet || + (qdev_hotplug && !dc->hotpluggable)) { + error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", + "pluggable device type"); + return NULL; + } + + return dc; +} + + +int qdev_device_help(QemuOpts *opts) +{ + Error *local_err = NULL; + const char *driver; + DevicePropertyInfoList *prop_list; + DevicePropertyInfoList *prop; + + 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; + } + + for (prop = prop_list; prop; prop = prop->next) { + error_printf("%s.%s=%s", driver, + prop->value->name, + prop->value->type); + if (prop->value->has_description) { + error_printf(" (%s)\n", prop->value->description); + } else { + error_printf("\n"); + } + } + + qapi_free_DevicePropertyInfoList(prop_list); + return 1; + +error: + error_printf("%s\n", error_get_pretty(local_err)); + error_free(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_list_bus(DeviceState *dev, Error **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 = ", "; + } +} + +static void qbus_list_dev(BusState *bus, Error **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 = ", "; + } +} + +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 = BUS_GET_CLASS(bus); + return bus_class->max_dev && bus->max_index >= 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_list_dev(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_list_bus(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_list_bus(dev, errp); + return NULL; + } + } + + if (qbus_is_full(bus)) { + error_setg(errp, "Bus '%s' is full", path); + return NULL; + } + return bus; +} + +DeviceState *qdev_device_add(QemuOpts *opts, Error **errp) +{ + DeviceClass *dc; + const char *driver, *path, *id; + DeviceState *dev; + BusState *bus = NULL; + Error *err = NULL; + + driver = qemu_opt_get(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 = qemu_opt_get(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_hotplug && bus && !qbus_is_hotpluggable(bus)) { + error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name); + return NULL; + } + + /* create device */ + dev = DEVICE(object_new(driver)); + + if (bus) { + qdev_set_parent_bus(dev, bus); + } + + id = qemu_opts_id(opts); + if (id) { + dev->id = id; + } + + if (dev->id) { + object_property_add_child(qdev_get_peripheral(), dev->id, + OBJECT(dev), NULL); + } else { + static int anon_count; + gchar *name = g_strdup_printf("device[%d]", anon_count++); + object_property_add_child(qdev_get_peripheral_anon(), name, + OBJECT(dev), NULL); + g_free(name); + } + + /* set properties */ + if (qemu_opt_foreach(opts, set_property, dev, &err)) { + error_propagate(errp, err); + object_unparent(OBJECT(dev)); + object_unref(OBJECT(dev)); + return NULL; + } + + dev->opts = opts; + object_property_set_bool(OBJECT(dev), true, "realized", &err); + if (err != NULL) { + error_propagate(errp, err); + dev->opts = NULL; + object_unparent(OBJECT(dev)); + object_unref(OBJECT(dev)); + return NULL; + } + return dev; +} + + +#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) +static void qbus_print(Monitor *mon, BusState *bus, int indent); + +static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props, + int indent) +{ + if (!props) + return; + for (; props->name; props++) { + Error *err = NULL; + char *value; + char *legacy_name = g_strdup_printf("legacy-%s", props->name); + if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) { + value = object_property_get_str(OBJECT(dev), legacy_name, &err); + } else { + value = object_property_print(OBJECT(dev), props->name, true, &err); + } + g_free(legacy_name); + + if (err) { + error_free(err); + continue; + } + qdev_printf("%s = %s\n", props->name, + value && *value ? value : "<null>"); + g_free(value); + } +} + +static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent) +{ + BusClass *bc = BUS_GET_CLASS(bus); + + if (bc->print_dev) { + bc->print_dev(mon, dev, indent); + } +} + +static void qdev_print(Monitor *mon, DeviceState *dev, int indent) +{ + ObjectClass *class; + BusState *child; + NamedGPIOList *ngl; + + 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); + } + } + 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); +} + +typedef struct QOMCompositionState { + Monitor *mon; + int indent; +} QOMCompositionState; + +static void print_qom_composition(Monitor *mon, Object *obj, int indent); + +static int print_qom_composition_child(Object *obj, void *opaque) +{ + QOMCompositionState *s = opaque; + + print_qom_composition(s->mon, obj, s->indent); + + return 0; +} + +static void print_qom_composition(Monitor *mon, Object *obj, int indent) +{ + QOMCompositionState s = { + .mon = mon, + .indent = indent + 2, + }; + char *name; + + if (obj == object_get_root()) { + name = g_strdup(""); + } else { + name = object_get_canonical_path_component(obj); + } + monitor_printf(mon, "%*s/%s (%s)\n", indent, "", name, + object_get_typename(obj)); + g_free(name); + object_child_foreach(obj, print_qom_composition_child, &s); +} + +void hmp_info_qom_tree(Monitor *mon, const QDict *dict) +{ + const char *path = qdict_get_try_str(dict, "path"); + Object *obj; + bool ambiguous = false; + + if (path) { + obj = object_resolve_path(path, &ambiguous); + if (!obj) { + monitor_printf(mon, "Path '%s' could not be resolved.\n", path); + return; + } + if (ambiguous) { + monitor_printf(mon, "Warning: Path '%s' is ambiguous.\n", path); + return; + } + } else { + obj = qdev_get_machine(); + } + print_qom_composition(mon, obj, 0); +} + +void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp) +{ + Error *local_err = NULL; + QemuOpts *opts; + DeviceState *dev; + + opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + if (!monitor_cur_is_qmp() && qdev_device_help(opts)) { + qemu_opts_del(opts); + return; + } + dev = qdev_device_add(opts, &local_err); + if (!dev) { + error_propagate(errp, local_err); + qemu_opts_del(opts); + return; + } + object_unref(OBJECT(dev)); +} + +void qmp_device_del(const char *id, Error **errp) +{ + Object *obj; + + if (id[0] == '/') { + obj = object_resolve_path(id, NULL); + } else { + char *root_path = object_get_canonical_path(qdev_get_peripheral()); + char *path = g_strdup_printf("%s/%s", root_path, id); + + g_free(root_path); + obj = object_resolve_path_type(path, TYPE_DEVICE, NULL); + g_free(path); + } + + if (!obj) { + error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, + "Device '%s' not found", id); + return; + } + + if (!object_dynamic_cast(obj, TYPE_DEVICE)) { + error_setg(errp, "%s is not a hotpluggable device", id); + return; + } + + qdev_unplug(DEVICE(obj), errp); +} + +void qdev_machine_init(void) +{ + qdev_get_peripheral_anon(); + qdev_get_peripheral(); +} + +QemuOptsList qemu_device_opts = { + .name = "device", + .implied_opt_name = "driver", + .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head), + .desc = { + /* + * no elements => accept any + * sanity checking will happen later + * when setting device properties + */ + { /* end of list */ } + }, +}; + +QemuOptsList qemu_global_opts = { + .name = "global", + .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head), + .desc = { + { + .name = "driver", + .type = QEMU_OPT_STRING, + },{ + .name = "property", + .type = QEMU_OPT_STRING, + },{ + .name = "value", + .type = QEMU_OPT_STRING, + }, + { /* end of list */ } + }, +}; + +int qemu_global_option(const char *str) +{ + char driver[64], property[64]; + QemuOpts *opts; + int rc, offset; + + rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset); + if (rc == 2 && str[offset] == '=') { + 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; + } + + return 0; +} |
