Initial import of qemu-2.4.1HEADmaster

1 files changed, 425 insertions, 0 deletions

diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
new file mode 100644
index 00000000..921e799d
--- /dev/null
+++ b/hw/core/qdev-properties-system.c
@@ -0,0 +1,425 @@
+/*
+ * qdev property parsing and global properties
+ * (parts specific for qemu-system-*)
+ *
+ * This file is based on code from hw/qdev-properties.c from
+ * commit 074a86fccd185616469dfcdc0e157f438aebba18,
+ * Copyright (c) Gerd Hoffmann <kraxel@redhat.com> and other contributors.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "net/net.h"
+#include "hw/qdev.h"
+#include "qapi/qmp/qerror.h"
+#include "sysemu/block-backend.h"
+#include "sysemu/blockdev.h"
+#include "hw/block/block.h"
+#include "net/hub.h"
+#include "qapi/visitor.h"
+#include "sysemu/char.h"
+#include "sysemu/iothread.h"
+
+static void get_pointer(Object *obj, Visitor *v, Property *prop,
+                        char *(*print)(void *ptr),
+                        const char *name, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    void **ptr = qdev_get_prop_ptr(dev, prop);
+    char *p;
+
+    p = *ptr ? print(*ptr) : g_strdup("");
+    visit_type_str(v, &p, name, errp);
+    g_free(p);
+}
+
+static void set_pointer(Object *obj, Visitor *v, Property *prop,
+                        void (*parse)(DeviceState *dev, const char *str,
+                                      void **ptr, const char *propname,
+                                      Error **errp),
+                        const char *name, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    Error *local_err = NULL;
+    void **ptr = qdev_get_prop_ptr(dev, prop);
+    char *str;
+
+    if (dev->realized) {
+        qdev_prop_set_after_realize(dev, name, errp);
+        return;
+    }
+
+    visit_type_str(v, &str, name, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+    if (!*str) {
+        g_free(str);
+        *ptr = NULL;
+        return;
+    }
+    parse(dev, str, ptr, prop->name, errp);
+    g_free(str);
+}
+
+/* --- drive --- */
+
+static void parse_drive(DeviceState *dev, const char *str, void **ptr,
+                        const char *propname, Error **errp)
+{
+    BlockBackend *blk;
+
+    blk = blk_by_name(str);
+    if (!blk) {
+        error_setg(errp, "Property '%s.%s' can't find value '%s'",
+                   object_get_typename(OBJECT(dev)), propname, str);
+        return;
+    }
+    if (blk_attach_dev(blk, dev) < 0) {
+        DriveInfo *dinfo = blk_legacy_dinfo(blk);
+
+        if (dinfo->type != IF_NONE) {
+            error_setg(errp, "Drive '%s' is already in use because "
+                       "it has been automatically connected to another "
+                       "device (did you need 'if=none' in the drive options?)",
+                       str);
+        } else {
+            error_setg(errp, "Drive '%s' is already in use by another device",
+                       str);
+        }
+        return;
+    }
+    *ptr = blk;
+}
+
+static void release_drive(Object *obj, const char *name, void *opaque)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    BlockBackend **ptr = qdev_get_prop_ptr(dev, prop);
+
+    if (*ptr) {
+        blk_detach_dev(*ptr, dev);
+        blockdev_auto_del(*ptr);
+    }
+}
+
+static char *print_drive(void *ptr)
+{
+    return g_strdup(blk_name(ptr));
+}
+
+static void get_drive(Object *obj, Visitor *v, void *opaque,
+                      const char *name, Error **errp)
+{
+    get_pointer(obj, v, opaque, print_drive, name, errp);
+}
+
+static void set_drive(Object *obj, Visitor *v, void *opaque,
+                      const char *name, Error **errp)
+{
+    set_pointer(obj, v, opaque, parse_drive, name, errp);
+}
+
+PropertyInfo qdev_prop_drive = {
+    .name  = "str",
+    .description = "ID of a drive to use as a backend",
+    .get   = get_drive,
+    .set   = set_drive,
+    .release = release_drive,
+};
+
+/* --- character device --- */
+
+static void parse_chr(DeviceState *dev, const char *str, void **ptr,
+                      const char *propname, Error **errp)
+{
+    CharDriverState *chr = qemu_chr_find(str);
+    if (chr == NULL) {
+        error_setg(errp, "Property '%s.%s' can't find value '%s'",
+                   object_get_typename(OBJECT(dev)), propname, str);
+        return;
+    }
+    if (qemu_chr_fe_claim(chr) != 0) {
+        error_setg(errp, "Property '%s.%s' can't take value '%s', it's in use",
+                  object_get_typename(OBJECT(dev)), propname, str);
+        return;
+    }
+    *ptr = chr;
+}
+
+static void release_chr(Object *obj, const char *name, void *opaque)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
+    CharDriverState *chr = *ptr;
+
+    if (chr) {
+        qemu_chr_add_handlers(chr, NULL, NULL, NULL, NULL);
+        qemu_chr_fe_release(chr);
+    }
+}
+
+
+static char *print_chr(void *ptr)
+{
+    CharDriverState *chr = ptr;
+    const char *val = chr->label ? chr->label : "";
+
+    return g_strdup(val);
+}
+
+static void get_chr(Object *obj, Visitor *v, void *opaque,
+                    const char *name, Error **errp)
+{
+    get_pointer(obj, v, opaque, print_chr, name, errp);
+}
+
+static void set_chr(Object *obj, Visitor *v, void *opaque,
+                    const char *name, Error **errp)
+{
+    set_pointer(obj, v, opaque, parse_chr, name, errp);
+}
+
+PropertyInfo qdev_prop_chr = {
+    .name  = "str",
+    .description = "ID of a chardev to use as a backend",
+    .get   = get_chr,
+    .set   = set_chr,
+    .release = release_chr,
+};
+
+/* --- netdev device --- */
+static void get_netdev(Object *obj, Visitor *v, void *opaque,
+                       const char *name, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
+    char *p = g_strdup(peers_ptr->ncs[0] ? peers_ptr->ncs[0]->name : "");
+
+    visit_type_str(v, &p, name, errp);
+    g_free(p);
+}
+
+static void set_netdev(Object *obj, Visitor *v, void *opaque,
+                       const char *name, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
+    NetClientState **ncs = peers_ptr->ncs;
+    NetClientState *peers[MAX_QUEUE_NUM];
+    Error *local_err = NULL;
+    int queues, err = 0, i = 0;
+    char *str;
+
+    if (dev->realized) {
+        qdev_prop_set_after_realize(dev, name, errp);
+        return;
+    }
+
+    visit_type_str(v, &str, name, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    queues = qemu_find_net_clients_except(str, peers,
+                                          NET_CLIENT_OPTIONS_KIND_NIC,
+                                          MAX_QUEUE_NUM);
+    if (queues == 0) {
+        err = -ENOENT;
+        goto out;
+    }
+
+    if (queues > MAX_QUEUE_NUM) {
+        error_setg(errp, "queues of backend '%s'(%d) exceeds QEMU limitation(%d)",
+                   str, queues, MAX_QUEUE_NUM);
+        goto out;
+    }
+
+    for (i = 0; i < queues; i++) {
+        if (peers[i] == NULL) {
+            err = -ENOENT;
+            goto out;
+        }
+
+        if (peers[i]->peer) {
+            err = -EEXIST;
+            goto out;
+        }
+
+        if (ncs[i]) {
+            err = -EINVAL;
+            goto out;
+        }
+
+        ncs[i] = peers[i];
+        ncs[i]->queue_index = i;
+    }
+
+    peers_ptr->queues = queues;
+
+out:
+    error_set_from_qdev_prop_error(errp, err, dev, prop, str);
+    g_free(str);
+}
+
+PropertyInfo qdev_prop_netdev = {
+    .name  = "str",
+    .description = "ID of a netdev to use as a backend",
+    .get   = get_netdev,
+    .set   = set_netdev,
+};
+
+/* --- vlan --- */
+
+static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len)
+{
+    NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
+
+    if (*ptr) {
+        int id;
+        if (!net_hub_id_for_client(*ptr, &id)) {
+            return snprintf(dest, len, "%d", id);
+        }
+    }
+
+    return snprintf(dest, len, "<null>");
+}
+
+static void get_vlan(Object *obj, Visitor *v, void *opaque,
+                     const char *name, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    NetClientState **ptr = qdev_get_prop_ptr(dev, prop);
+    int32_t id = -1;
+
+    if (*ptr) {
+        int hub_id;
+        if (!net_hub_id_for_client(*ptr, &hub_id)) {
+            id = hub_id;
+        }
+    }
+
+    visit_type_int32(v, &id, name, errp);
+}
+
+static void set_vlan(Object *obj, Visitor *v, void *opaque,
+                     const char *name, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
+    NetClientState **ptr = &peers_ptr->ncs[0];
+    Error *local_err = NULL;
+    int32_t id;
+    NetClientState *hubport;
+
+    if (dev->realized) {
+        qdev_prop_set_after_realize(dev, name, errp);
+        return;
+    }
+
+    visit_type_int32(v, &id, name, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+    if (id == -1) {
+        *ptr = NULL;
+        return;
+    }
+    if (*ptr) {
+        error_set_from_qdev_prop_error(errp, -EINVAL, dev, prop, name);
+        return;
+    }
+
+    hubport = net_hub_port_find(id);
+    if (!hubport) {
+        error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
+                   name, prop->info->name);
+        return;
+    }
+    *ptr = hubport;
+}
+
+PropertyInfo qdev_prop_vlan = {
+    .name  = "int32",
+    .description = "Integer VLAN id to connect to",
+    .print = print_vlan,
+    .get   = get_vlan,
+    .set   = set_vlan,
+};
+
+void qdev_prop_set_drive(DeviceState *dev, const char *name,
+                         BlockBackend *value, Error **errp)
+{
+    object_property_set_str(OBJECT(dev), value ? blk_name(value) : "",
+                            name, errp);
+}
+
+void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name,
+                                BlockBackend *value)
+{
+    Error *err = NULL;
+
+    qdev_prop_set_drive(dev, name, value, &err);
+    if (err) {
+        error_report_err(err);
+        exit(1);
+    }
+}
+
+void qdev_prop_set_chr(DeviceState *dev, const char *name,
+                       CharDriverState *value)
+{
+    assert(!value || value->label);
+    object_property_set_str(OBJECT(dev),
+                            value ? value->label : "", name, &error_abort);
+}
+
+void qdev_prop_set_netdev(DeviceState *dev, const char *name,
+                          NetClientState *value)
+{
+    assert(!value || value->name);
+    object_property_set_str(OBJECT(dev),
+                            value ? value->name : "", name, &error_abort);
+}
+
+void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
+{
+    qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
+    if (nd->netdev) {
+        qdev_prop_set_netdev(dev, "netdev", nd->netdev);
+    }
+    if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
+        object_property_find(OBJECT(dev), "vectors", NULL)) {
+        qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
+    }
+    nd->instantiated = 1;
+}
+
+static int qdev_add_one_global(void *opaque, QemuOpts *opts, Error **errp)
+{
+    GlobalProperty *g;
+
+    g = g_malloc0(sizeof(*g));
+    g->driver   = qemu_opt_get(opts, "driver");
+    g->property = qemu_opt_get(opts, "property");
+    g->value    = qemu_opt_get(opts, "value");
+    g->user_provided = true;
+    qdev_prop_register_global(g);
+    return 0;
+}
+
+void qemu_add_globals(void)
+{
+    qemu_opts_foreach(qemu_find_opts("global"),
+                      qdev_add_one_global, NULL, NULL);
+}