diff options
Diffstat (limited to 'qdev-monitor.c')
| -rw-r--r-- | qdev-monitor.c | 684 |
1 files changed, 684 insertions, 0 deletions
diff --git a/qdev-monitor.c b/qdev-monitor.c new file mode 100644 index 0000000000..9a78ccff6d --- /dev/null +++ b/qdev-monitor.c @@ -0,0 +1,684 @@ +/* + * 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 "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; + + if (strcmp(name, "driver") == 0) + return 0; + if (strcmp(name, "bus") == 0) + return 0; + + if (qdev_prop_parse(dev, name, value) == -1) { + 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; + } + if (bus_typename && !object_dynamic_cast(OBJECT(bus), bus_typename)) { + match = 0; + } + 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; + + 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 { + 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->allow_hotplug) { + qerror_report(QERR_BUS_NO_HOTPLUG, bus->name); + return NULL; + } + + if (!bus) { + bus = sysbus_get_default(); + } + + /* create device, set properties */ + qdev = DEVICE(object_new(driver)); + 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; +} |