From patchwork Thu Mar 13 14:10:56 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 329914 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id BB3822C0084 for ; Fri, 14 Mar 2014 01:16:21 +1100 (EST) Received: from localhost ([::1]:39239 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WO6Ql-0003aa-E7 for incoming@patchwork.ozlabs.org; Thu, 13 Mar 2014 10:16:19 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36897) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WO6MT-0006Mk-MS for qemu-devel@nongnu.org; Thu, 13 Mar 2014 10:11:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WO6MN-0006Zq-Hp for qemu-devel@nongnu.org; Thu, 13 Mar 2014 10:11:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:61305) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WO6MN-0006Zh-9n for qemu-devel@nongnu.org; Thu, 13 Mar 2014 10:11:47 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s2DEBjIs014383 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 13 Mar 2014 10:11:45 -0400 Received: from localhost (ovpn-112-17.ams2.redhat.com [10.36.112.17]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id s2DEBhNB010606; Thu, 13 Mar 2014 10:11:44 -0400 From: Stefan Hajnoczi To: Date: Thu, 13 Mar 2014 15:10:56 +0100 Message-Id: <1394719868-24312-13-git-send-email-stefanha@redhat.com> In-Reply-To: <1394719868-24312-1-git-send-email-stefanha@redhat.com> References: <1394719868-24312-1-git-send-email-stefanha@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Peter Maydell , Stefan Hajnoczi , Anthony Liguori Subject: [Qemu-devel] [PULL v2 for-2.0 12/24] iothread: add "iothread" qdev property type X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add a "iothread" qdev property type so devices can be hooked up to an IOThread from the comand-line: qemu -object iothread,id=iothread0 \ -device some-device,x-iothread=iothread0 Note that Paolo Bonzini has suggested using QOM links instead. This way the relationship between the objects is reflected in QOM. There are currently shortcomings of object_property_add_link() which prevent this use case. I will attempt to fix them and move to QOM links in a separate series. Signed-off-by: Stefan Hajnoczi --- hw/core/qdev-properties-system.c | 51 ++++++++++++++++++++++++++++++++++++++++ include/hw/qdev-properties.h | 3 +++ 2 files changed, 54 insertions(+) diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c index 878c3bc..de83561 100644 --- a/hw/core/qdev-properties-system.c +++ b/hw/core/qdev-properties-system.c @@ -18,6 +18,7 @@ #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), @@ -385,6 +386,56 @@ void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) nd->instantiated = 1; } +/* --- iothread --- */ + +static char *print_iothread(void *ptr) +{ + return iothread_get_id(ptr); +} + +static int parse_iothread(DeviceState *dev, const char *str, void **ptr) +{ + IOThread *iothread; + + iothread = iothread_find(str); + if (!iothread) { + return -ENOENT; + } + object_ref(OBJECT(iothread)); + *ptr = iothread; + return 0; +} + +static void get_iothread(Object *obj, struct Visitor *v, void *opaque, + const char *name, Error **errp) +{ + get_pointer(obj, v, opaque, print_iothread, name, errp); +} + +static void set_iothread(Object *obj, struct Visitor *v, void *opaque, + const char *name, Error **errp) +{ + set_pointer(obj, v, opaque, parse_iothread, name, errp); +} + +static void release_iothread(Object *obj, const char *name, void *opaque) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + IOThread **ptr = qdev_get_prop_ptr(dev, prop); + + if (*ptr) { + object_unref(OBJECT(*ptr)); + } +} + +PropertyInfo qdev_prop_iothread = { + .name = "iothread", + .get = get_iothread, + .set = set_iothread, + .release = release_iothread, +}; + static int qdev_add_one_global(QemuOpts *opts, void *opaque) { GlobalProperty *g; diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index 0c0babf..3c000ee 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -22,6 +22,7 @@ extern PropertyInfo qdev_prop_bios_chs_trans; extern PropertyInfo qdev_prop_drive; extern PropertyInfo qdev_prop_netdev; extern PropertyInfo qdev_prop_vlan; +extern PropertyInfo qdev_prop_iothread; extern PropertyInfo qdev_prop_pci_devfn; extern PropertyInfo qdev_prop_blocksize; extern PropertyInfo qdev_prop_pci_host_devaddr; @@ -142,6 +143,8 @@ extern PropertyInfo qdev_prop_arraylen; DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, NICPeers) #define DEFINE_PROP_DRIVE(_n, _s, _f) \ DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockDriverState *) +#define DEFINE_PROP_IOTHREAD(_n, _s, _f) \ + DEFINE_PROP(_n, _s, _f, qdev_prop_iothread, IOThread *) #define DEFINE_PROP_MACADDR(_n, _s, _f) \ DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr) #define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \