#include "sysemu.h"
#include "monitor.h"
+static int qdev_hotplug = 0;
+
/* This is a nasty hack to allow passing a NULL bus to qdev_create. */
static BusState *main_system_bus;
-static DeviceInfo *device_info_list;
+DeviceInfo *device_info_list;
static BusState *qbus_find_recursive(BusState *bus, const char *name,
const BusInfo *info);
return NULL;
}
+static DeviceState *qdev_create_from_info(BusState *bus, DeviceInfo *info)
+{
+ DeviceState *dev;
+
+ assert(bus->info == info->bus_info);
+ dev = qemu_mallocz(info->size);
+ dev->info = info;
+ dev->parent_bus = bus;
+ qdev_prop_set_defaults(dev, dev->info->props);
+ qdev_prop_set_defaults(dev, dev->parent_bus->info->props);
+ qdev_prop_set_globals(dev);
+ QLIST_INSERT_HEAD(&bus->children, dev, sibling);
+ if (qdev_hotplug) {
+ assert(bus->allow_hotplug);
+ dev->hotplugged = 1;
+ }
+ dev->instance_id_alias = -1;
+ dev->state = DEV_STATE_CREATED;
+ return dev;
+}
+
/* Create a new device. This only initializes the device state structure
and allows properties to be set. qdev_init should be called to
initialize the actual device emulation. */
DeviceState *qdev_create(BusState *bus, const char *name)
{
DeviceInfo *info;
- DeviceState *dev;
if (!bus) {
if (!main_system_bus) {
hw_error("Unknown device '%s' for bus '%s'\n", name, bus->info->name);
}
- dev = qemu_mallocz(info->size);
- dev->info = info;
- dev->parent_bus = bus;
- qdev_prop_set_defaults(dev, dev->info->props);
- qdev_prop_set_defaults(dev, dev->parent_bus->info->props);
- qdev_prop_set_compat(dev);
- LIST_INSERT_HEAD(&bus->children, dev, sibling);
- return dev;
+ return qdev_create_from_info(bus, info);
}
-static int qdev_print_devinfo(DeviceInfo *info, char *dest, int len)
+static void qdev_print_devinfo(DeviceInfo *info)
{
- int pos = 0;
- int ret;
-
- ret = snprintf(dest+pos, len-pos, "name \"%s\", bus %s",
- info->name, info->bus_info->name);
- pos += MIN(len-pos,ret);
+ error_printf("name \"%s\", bus %s",
+ info->name, info->bus_info->name);
if (info->alias) {
- ret = snprintf(dest+pos, len-pos, ", alias \"%s\"", info->alias);
- pos += MIN(len-pos,ret);
+ error_printf(", alias \"%s\"", info->alias);
}
if (info->desc) {
- ret = snprintf(dest+pos, len-pos, ", desc \"%s\"", info->desc);
- pos += MIN(len-pos,ret);
+ error_printf(", desc \"%s\"", info->desc);
}
if (info->no_user) {
- ret = snprintf(dest+pos, len-pos, ", no-user");
- pos += MIN(len-pos,ret);
+ error_printf(", no-user");
}
- return pos;
+ error_printf("\n");
}
static int set_property(const char *name, const char *value, void *opaque)
if (strcmp(name, "bus") == 0)
return 0;
- if (-1 == qdev_prop_parse(dev, name, value)) {
- fprintf(stderr, "can't set property \"%s\" to \"%s\" for \"%s\"\n",
- name, value, dev->info->name);
+ if (qdev_prop_parse(dev, name, value) == -1) {
return -1;
}
return 0;
}
+int qdev_device_help(QemuOpts *opts)
+{
+ const char *driver;
+ DeviceInfo *info;
+ Property *prop;
+
+ driver = qemu_opt_get(opts, "driver");
+ if (driver && !strcmp(driver, "?")) {
+ for (info = device_info_list; info != NULL; info = info->next) {
+ if (info->no_user) {
+ continue; /* not available, don't show */
+ }
+ qdev_print_devinfo(info);
+ }
+ return 1;
+ }
+
+ if (!qemu_opt_get(opts, "?")) {
+ return 0;
+ }
+
+ info = qdev_find_info(NULL, driver);
+ if (!info) {
+ return 0;
+ }
+
+ for (prop = info->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->parse) {
+ continue; /* no way to set it, don't show */
+ }
+ error_printf("%s.%s=%s\n", info->name, prop->name, prop->info->name);
+ }
+ return 1;
+}
+
DeviceState *qdev_device_add(QemuOpts *opts)
{
const char *driver, *path, *id;
driver = qemu_opt_get(opts, "driver");
if (!driver) {
- fprintf(stderr, "-device: no driver specified\n");
- return NULL;
- }
- if (strcmp(driver, "?") == 0) {
- char msg[256];
- for (info = device_info_list; info != NULL; info = info->next) {
- qdev_print_devinfo(info, msg, sizeof(msg));
- fprintf(stderr, "%s\n", msg);
- }
+ qerror_report(QERR_MISSING_PARAMETER, "driver");
return NULL;
}
/* find driver */
info = qdev_find_info(NULL, driver);
- if (!info) {
- fprintf(stderr, "Device \"%s\" not found. Try -device '?' for a list.\n",
- driver);
- return NULL;
- }
- if (info->no_user) {
- fprintf(stderr, "device \"%s\" can't be added via command line\n",
- info->name);
+ if (!info || info->no_user) {
+ qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "a driver name");
+ error_printf_unless_qmp("Try with argument '?' for a list.\n");
return NULL;
}
path = qemu_opt_get(opts, "bus");
if (path != NULL) {
bus = qbus_find(path);
+ if (!bus) {
+ return NULL;
+ }
+ if (bus->info != info->bus_info) {
+ qerror_report(QERR_BAD_BUS_FOR_DEVICE,
+ driver, bus->info->name);
+ return NULL;
+ }
} else {
bus = qbus_find_recursive(main_system_bus, NULL, info->bus_info);
+ if (!bus) {
+ qerror_report(QERR_NO_BUS_FOR_DEVICE,
+ info->name, info->bus_info->name);
+ return NULL;
+ }
}
- if (!bus)
+ if (qdev_hotplug && !bus->allow_hotplug) {
+ qerror_report(QERR_BUS_NO_HOTPLUG, bus->name);
return NULL;
+ }
/* create device, set properties */
- qdev = qdev_create(bus, driver);
+ qdev = qdev_create_from_info(bus, info);
id = qemu_opts_id(opts);
if (id) {
qdev->id = id;
qdev_free(qdev);
return NULL;
}
- qdev_init(qdev);
+ if (qdev_init(qdev) < 0) {
+ qerror_report(QERR_DEVICE_INIT_FAILED, driver);
+ return NULL;
+ }
+ qdev->opts = opts;
return qdev;
}
+static void qdev_reset(void *opaque)
+{
+ DeviceState *dev = opaque;
+ if (dev->info->reset)
+ dev->info->reset(dev);
+}
+
/* Initialize a device. Device properties should be set before calling
this function. IRQs and MMIO regions should be connected/mapped after
- calling this function. */
-void qdev_init(DeviceState *dev)
+ calling this function.
+ On failure, destroy the device and return negative value.
+ Return 0 on success. */
+int qdev_init(DeviceState *dev)
+{
+ int rc;
+
+ assert(dev->state == DEV_STATE_CREATED);
+ rc = dev->info->init(dev, dev->info);
+ if (rc < 0) {
+ qdev_free(dev);
+ return rc;
+ }
+ qemu_register_reset(qdev_reset, dev);
+ if (dev->info->vmsd) {
+ vmstate_register_with_alias_id(-1, dev->info->vmsd, dev,
+ dev->instance_id_alias,
+ dev->alias_required_for_version);
+ }
+ dev->state = DEV_STATE_INITIALIZED;
+ return 0;
+}
+
+void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
+ int required_for_version)
+{
+ assert(dev->state == DEV_STATE_CREATED);
+ dev->instance_id_alias = alias_id;
+ dev->alias_required_for_version = required_for_version;
+}
+
+int qdev_unplug(DeviceState *dev)
+{
+ if (!dev->parent_bus->allow_hotplug) {
+ qerror_report(QERR_BUS_NO_HOTPLUG, dev->parent_bus->name);
+ return -1;
+ }
+ assert(dev->info->unplug != NULL);
+
+ return dev->info->unplug(dev);
+}
+
+/* can be used as ->unplug() callback for the simple cases */
+int qdev_simple_unplug_cb(DeviceState *dev)
{
- dev->info->init(dev, dev->info);
+ /* just zap it */
+ qdev_free(dev);
+ return 0;
+}
+
+/* Like qdev_init(), but terminate program via hw_error() instead of
+ returning an error value. This is okay during machine creation.
+ Don't use for hotplug, because there callers need to recover from
+ failure. Exception: if you know the device's init() callback can't
+ fail, then qdev_init_nofail() can't fail either, and is therefore
+ usable even then. But relying on the device implementation that
+ way is somewhat unclean, and best avoided. */
+void qdev_init_nofail(DeviceState *dev)
+{
+ DeviceInfo *info = dev->info;
+
+ if (qdev_init(dev) < 0)
+ hw_error("Initialization of device %s failed\n", info->name);
}
/* Unlink device from bus and free the structure. */
void qdev_free(DeviceState *dev)
{
- LIST_REMOVE(dev, sibling);
+ BusState *bus;
+ Property *prop;
+
+ if (dev->state == DEV_STATE_INITIALIZED) {
+ while (dev->num_child_bus) {
+ bus = QLIST_FIRST(&dev->child_bus);
+ qbus_free(bus);
+ }
+ if (dev->info->vmsd)
+ vmstate_unregister(dev->info->vmsd, dev);
+ if (dev->info->exit)
+ dev->info->exit(dev);
+ if (dev->opts)
+ qemu_opts_del(dev->opts);
+ }
+ qemu_unregister_reset(qdev_reset, dev);
+ QLIST_REMOVE(dev, sibling);
+ for (prop = dev->info->props; prop && prop->name; prop++) {
+ if (prop->info->free) {
+ prop->info->free(dev, prop);
+ }
+ }
qemu_free(dev);
}
+void qdev_machine_creation_done(void)
+{
+ /*
+ * ok, initial machine setup is done, starting from now we can
+ * only create hotpluggable devices
+ */
+ qdev_hotplug = 1;
+}
+
/* Get a character (serial) device interface. */
CharDriverState *qdev_init_chardev(DeviceState *dev)
{
static int next_serial;
- static int next_virtconsole;
- /* FIXME: This is a nasty hack that needs to go away. */
- if (strncmp(dev->info->name, "virtio", 6) == 0) {
- return virtcon_hds[next_virtconsole++];
- } else {
- return serial_hds[next_serial++];
- }
+
+ /* FIXME: This function needs to go away: use chardev properties! */
+ return serial_hds[next_serial++];
}
BusState *qdev_get_parent_bus(DeviceState *dev)
dev->gpio_out[n] = pin;
}
-VLANClientState *qdev_get_vlan_client(DeviceState *dev,
- NetCanReceive *can_receive,
- NetReceive *receive,
- NetReceiveIOV *receive_iov,
- NetCleanup *cleanup,
- void *opaque)
-{
- NICInfo *nd = dev->nd;
- assert(nd);
- nd->vc = qemu_new_vlan_client(nd->vlan, nd->model, nd->name, can_receive,
- receive, receive_iov, cleanup, opaque);
- return nd->vc;
-}
-
-
-void qdev_get_macaddr(DeviceState *dev, uint8_t *macaddr)
+void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
{
- memcpy(macaddr, dev->nd->macaddr, 6);
+ qdev_prop_set_macaddr(dev, "mac", nd->macaddr);
+ if (nd->vlan)
+ qdev_prop_set_vlan(dev, "vlan", nd->vlan);
+ if (nd->netdev)
+ qdev_prop_set_netdev(dev, "netdev", nd->netdev);
+ if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
+ qdev_prop_exists(dev, "vectors")) {
+ qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
+ }
}
static int next_block_unit[IF_COUNT];
{
BusState *bus;
- LIST_FOREACH(bus, &dev->child_bus, sibling) {
+ QLIST_FOREACH(bus, &dev->child_bus, sibling) {
if (strcmp(name, bus->name) == 0) {
return bus;
}
return NULL;
}
-static int next_scsi_bus;
-
-/* Create a scsi bus, and attach devices to it. */
-/* TODO: Actually create a scsi bus for hotplug to use. */
-void scsi_bus_new(DeviceState *host, SCSIAttachFn attach)
-{
- int bus = next_scsi_bus++;
- int unit;
- DriveInfo *dinfo;
-
- for (unit = 0; unit < MAX_SCSI_DEVS; unit++) {
- dinfo = drive_get(IF_SCSI, bus, unit);
- if (!dinfo) {
- continue;
- }
- attach(host, dinfo->bdrv, unit);
- }
-}
-
static BusState *qbus_find_recursive(BusState *bus, const char *name,
const BusInfo *info)
{
return bus;
}
- LIST_FOREACH(dev, &bus->children, sibling) {
- LIST_FOREACH(child, &dev->child_bus, sibling) {
+ QLIST_FOREACH(dev, &bus->children, sibling) {
+ QLIST_FOREACH(child, &dev->child_bus, sibling) {
ret = qbus_find_recursive(child, name, info);
if (ret) {
return ret;
return NULL;
}
-static void qbus_list_bus(DeviceState *dev, char *dest, int len)
+static DeviceState *qdev_find_recursive(BusState *bus, const char *id)
+{
+ DeviceState *dev, *ret;
+ BusState *child;
+
+ QLIST_FOREACH(dev, &bus->children, sibling) {
+ if (dev->id && strcmp(dev->id, id) == 0)
+ return dev;
+ QLIST_FOREACH(child, &dev->child_bus, sibling) {
+ ret = qdev_find_recursive(child, id);
+ if (ret) {
+ return ret;
+ }
+ }
+ }
+ return NULL;
+}
+
+static void qbus_list_bus(DeviceState *dev)
{
BusState *child;
const char *sep = " ";
- int pos = 0;
- pos += snprintf(dest+pos, len-pos,"child busses at \"%s\":",
- dev->id ? dev->id : dev->info->name);
- LIST_FOREACH(child, &dev->child_bus, sibling) {
- pos += snprintf(dest+pos, len-pos, "%s\"%s\"", sep, child->name);
+ error_printf("child busses at \"%s\":",
+ dev->id ? dev->id : dev->info->name);
+ 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, char *dest, int len)
+static void qbus_list_dev(BusState *bus)
{
DeviceState *dev;
const char *sep = " ";
- int pos = 0;
- pos += snprintf(dest+pos, len-pos, "devices at \"%s\":",
- bus->name);
- LIST_FOREACH(dev, &bus->children, sibling) {
- pos += snprintf(dest+pos, len-pos, "%s\"%s\"",
- sep, dev->info->name);
+ error_printf("devices at \"%s\":", bus->name);
+ QLIST_FOREACH(dev, &bus->children, sibling) {
+ error_printf("%s\"%s\"", sep, dev->info->name);
if (dev->id)
- pos += snprintf(dest+pos, len-pos, "/\"%s\"", dev->id);
+ error_printf("/\"%s\"", dev->id);
sep = ", ";
}
+ error_printf("\n");
}
static BusState *qbus_find_bus(DeviceState *dev, char *elem)
{
BusState *child;
- LIST_FOREACH(child, &dev->child_bus, sibling) {
+ QLIST_FOREACH(child, &dev->child_bus, sibling) {
if (strcmp(child->name, elem) == 0) {
return child;
}
* (2) driver name
* (3) driver alias, if present
*/
- LIST_FOREACH(dev, &bus->children, sibling) {
+ QLIST_FOREACH(dev, &bus->children, sibling) {
if (dev->id && strcmp(dev->id, elem) == 0) {
return dev;
}
}
- LIST_FOREACH(dev, &bus->children, sibling) {
+ QLIST_FOREACH(dev, &bus->children, sibling) {
if (strcmp(dev->info->name, elem) == 0) {
return dev;
}
}
- LIST_FOREACH(dev, &bus->children, sibling) {
+ QLIST_FOREACH(dev, &bus->children, sibling) {
if (dev->info->alias && strcmp(dev->info->alias, elem) == 0) {
return dev;
}
{
DeviceState *dev;
BusState *bus;
- char elem[128], msg[256];
+ char elem[128];
int pos, len;
/* find start element */
pos = 0;
} else {
if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
- fprintf(stderr, "path parse error (\"%s\")\n", path);
- return NULL;
+ assert(!path[0]);
+ elem[0] = len = 0;
}
bus = qbus_find_recursive(main_system_bus, elem, NULL);
if (!bus) {
- fprintf(stderr, "bus \"%s\" not found\n", elem);
+ 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') {
- /* we are done */
return bus;
}
/* find device */
- if (sscanf(path+pos, "/%127[^/]%n", elem, &len) != 1) {
- fprintf(stderr, "path parse error (\"%s\" pos %d)\n", path, pos);
- return NULL;
+ 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) {
- qbus_list_dev(bus, msg, sizeof(msg));
- fprintf(stderr, "device \"%s\" not found\n%s\n", elem, msg);
+ 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:
- fprintf(stderr, "device has no child bus (%s)\n", path);
+ qerror_report(QERR_DEVICE_NO_BUS, elem);
return NULL;
case 1:
- return LIST_FIRST(&dev->child_bus);
+ return QLIST_FIRST(&dev->child_bus);
default:
- qbus_list_bus(dev, msg, sizeof(msg));
- fprintf(stderr, "device has multiple child busses (%s)\n%s\n",
- path, msg);
+ 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) {
- fprintf(stderr, "path parse error (\"%s\" pos %d)\n", path, pos);
- return NULL;
+ 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) {
- qbus_list_bus(dev, msg, sizeof(msg));
- fprintf(stderr, "child bus \"%s\" not found\n%s\n", elem, msg);
+ qerror_report(QERR_BUS_NOT_FOUND, elem);
+ if (!monitor_cur_is_qmp()) {
+ qbus_list_bus(dev);
+ }
return NULL;
}
}
}
-BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name)
+void qbus_create_inplace(BusState *bus, BusInfo *info,
+ DeviceState *parent, const char *name)
{
- BusState *bus;
char *buf;
int i,len;
- bus = qemu_mallocz(info->size);
bus->info = info;
bus->parent = parent;
bus->name = buf;
}
- LIST_INIT(&bus->children);
+ QLIST_INIT(&bus->children);
if (parent) {
- LIST_INSERT_HEAD(&parent->child_bus, bus, sibling);
+ QLIST_INSERT_HEAD(&parent->child_bus, bus, sibling);
parent->num_child_bus++;
}
+
+}
+
+BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name)
+{
+ BusState *bus;
+
+ bus = qemu_mallocz(info->size);
+ bus->qdev_allocated = 1;
+ qbus_create_inplace(bus, info, parent, name);
return bus;
}
+void qbus_free(BusState *bus)
+{
+ DeviceState *dev;
+
+ while ((dev = QLIST_FIRST(&bus->children)) != NULL) {
+ qdev_free(dev);
+ }
+ if (bus->parent) {
+ QLIST_REMOVE(bus, sibling);
+ bus->parent->num_child_bus--;
+ }
+ qemu_free((void*)bus->name);
+ if (bus->qdev_allocated) {
+ qemu_free(bus);
+ }
+}
+
#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
static void qbus_print(Monitor *mon, BusState *bus, int indent);
if (!props)
return;
while (props->name) {
+ /*
+ * TODO Properties without a print method are just for dirty
+ * hacks. qdev_prop_ptr is the only such PropertyInfo. It's
+ * marked for removal. The test props->info->print should be
+ * removed along with it.
+ */
if (props->info->print) {
props->info->print(dev, props, buf, sizeof(buf));
qdev_printf("%s-prop: %s = %s\n", prefix, props->name, buf);
qdev_print_props(mon, dev, dev->parent_bus->info->props, "bus", indent);
if (dev->parent_bus->info->print_dev)
dev->parent_bus->info->print_dev(mon, dev, indent);
- LIST_FOREACH(child, &dev->child_bus, sibling) {
+ QLIST_FOREACH(child, &dev->child_bus, sibling) {
qbus_print(mon, child, indent);
}
}
qdev_printf("bus: %s\n", bus->name);
indent += 2;
qdev_printf("type %s\n", bus->info->name);
- LIST_FOREACH(dev, &bus->children, sibling) {
+ QLIST_FOREACH(dev, &bus->children, sibling) {
qdev_print(mon, dev, indent);
}
}
qbus_print(mon, main_system_bus, 0);
}
-void do_info_qdrv(Monitor *mon)
+void do_info_qdm(Monitor *mon)
{
DeviceInfo *info;
- char msg[256];
for (info = device_info_list; info != NULL; info = info->next) {
- qdev_print_devinfo(info, msg, sizeof(msg));
- monitor_printf(mon, "%s\n", msg);
+ qdev_print_devinfo(info);
+ }
+}
+
+int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
+{
+ QemuOpts *opts;
+
+ opts = qemu_opts_from_qdict(&qemu_device_opts, qdict);
+ if (!opts) {
+ return -1;
+ }
+ if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
+ qemu_opts_del(opts);
+ return 0;
+ }
+ if (!qdev_device_add(opts)) {
+ qemu_opts_del(opts);
+ return -1;
+ }
+ return 0;
+}
+
+int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
+{
+ const char *id = qdict_get_str(qdict, "id");
+ DeviceState *dev;
+
+ dev = qdev_find_recursive(main_system_bus, id);
+ if (NULL == dev) {
+ qerror_report(QERR_DEVICE_NOT_FOUND, id);
+ return -1;
}
+ return qdev_unplug(dev);
}
projects / qemu.git / blobdiff