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