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From: Gerd Hoffmann <kraxel@redhat.com>
To: qemu-devel@nongnu.org
Cc: Juergen Gross <jgross@suse.com>,
	Anthony Perard <anthony.perard@citrix.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Gerd Hoffmann <kraxel@redhat.com>,
	"open list:X86" <xen-devel@lists.xensource.com>
Subject: [PULL 1/4] xen: introduce dummy system device
Date: Mon, 23 May 2016 15:12:00 +0200	[thread overview]
Message-ID: <1464009123-5814-2-git-send-email-kraxel@redhat.com> (raw)
In-Reply-To: <1464009123-5814-1-git-send-email-kraxel@redhat.com>

From: Juergen Gross <jgross@suse.com>

Introduce a new dummy system device serving as parent for virtual
buses. This will enable new pv backends to introduce virtual buses
which are removable again opposed to system buses which are meant
to stay once added.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Message-id: 1463062421-613-2-git-send-email-jgross@suse.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/xenpv/xen_machine_pv.c    | 40 ++++++++++++++++++++++++++++++++++++++++
 include/hw/xen/xen_backend.h |  1 +
 2 files changed, 41 insertions(+)

diff --git a/hw/xenpv/xen_machine_pv.c b/hw/xenpv/xen_machine_pv.c
index fc13535..48d5bc6 100644
--- a/hw/xenpv/xen_machine_pv.c
+++ b/hw/xenpv/xen_machine_pv.c
@@ -25,10 +25,15 @@
 #include "qemu/osdep.h"
 #include "hw/hw.h"
 #include "hw/boards.h"
+#include "hw/sysbus.h"
 #include "hw/xen/xen_backend.h"
 #include "xen_domainbuild.h"
 #include "sysemu/block-backend.h"
 
+#define TYPE_XENSYSDEV "xensysdev"
+
+DeviceState *xen_sysdev;
+
 static void xen_init_pv(MachineState *machine)
 {
     DriveInfo *dinfo;
@@ -67,6 +72,9 @@ static void xen_init_pv(MachineState *machine)
         break;
     }
 
+    xen_sysdev = qdev_create(NULL, TYPE_XENSYSDEV);
+    qdev_init_nofail(xen_sysdev);
+
     xen_be_register("console", &xen_console_ops);
     xen_be_register("vkbd", &xen_kbdmouse_ops);
     xen_be_register("vfb", &xen_framebuffer_ops);
@@ -101,6 +109,38 @@ static void xen_init_pv(MachineState *machine)
     xen_init_display(xen_domid);
 }
 
+static int xen_sysdev_init(SysBusDevice *dev)
+{
+    return 0;
+}
+
+static Property xen_sysdev_properties[] = {
+    {/* end of property list */},
+};
+
+static void xen_sysdev_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+    k->init = xen_sysdev_init;
+    dc->props = xen_sysdev_properties;
+}
+
+static const TypeInfo xensysdev_info = {
+    .name          = TYPE_XENSYSDEV,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(SysBusDevice),
+    .class_init    = xen_sysdev_class_init,
+};
+
+static void xenpv_register_types(void)
+{
+    type_register_static(&xensysdev_info);
+}
+
+type_init(xenpv_register_types);
+
 static void xenpv_machine_init(MachineClass *mc)
 {
     mc->desc = "Xen Para-virtualized PC";
diff --git a/include/hw/xen/xen_backend.h b/include/hw/xen/xen_backend.h
index c839eeb..b4b4ff0 100644
--- a/include/hw/xen/xen_backend.h
+++ b/include/hw/xen/xen_backend.h
@@ -60,6 +60,7 @@ extern xc_interface *xen_xc;
 extern xenforeignmemory_handle *xen_fmem;
 extern struct xs_handle *xenstore;
 extern const char *xen_protocol;
+extern DeviceState *xen_sysdev;
 
 /* xenstore helper functions */
 int xenstore_write_str(const char *base, const char *node, const char *val);
-- 
1.8.3.1


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       reply	other threads:[~2016-05-23 13:12 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1464009123-5814-1-git-send-email-kraxel@redhat.com>
2016-05-23 13:12 ` Gerd Hoffmann [this message]
2016-05-23 13:12 ` [PULL 2/4] xen: write information about supported backends Gerd Hoffmann
2016-05-23 13:12 ` [PULL 3/4] xen: add pvUSB backend Gerd Hoffmann
2016-06-07  8:35   ` [Xen-devel] " Olaf Hering
2016-06-10 10:38     ` Gerd Hoffmann
2016-06-13  7:55       ` [Xen-devel] " Juergen Gross

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