[Qemu-devel] [PATCH v6 10/16] hw/vfio: calxeda xgmac device

[Eric Auger]

The platform device class has become abstract. The device can be be
instantiated on command line using such option.

-device vfio-calxeda-xgmac,host="fff51000.ethernet"
compat string is hardcoded in the code except if user overrides it

Signed-off-by: Eric Auger <address@hidden>

---

v5 -> v6
- back again following Alex Graf advises
- fix a bug related to compat override

v4 -> v5:
removed since device tree was moved to hw/arm/dyn_sysbus_devtree.c

v4: creation for device tree specialization
---
 hw/vfio/Makefile.objs                |  1 +
 hw/vfio/calxeda_xgmac.c              | 57 ++++++++++++++++++++++++++++++++++++
 include/hw/vfio/vfio-calxeda-xgmac.h | 41 ++++++++++++++++++++++++++
 3 files changed, 99 insertions(+)
 create mode 100644 hw/vfio/calxeda_xgmac.c
 create mode 100644 include/hw/vfio/vfio-calxeda-xgmac.h

diff --git a/hw/vfio/Makefile.objs b/hw/vfio/Makefile.objs
index c5c76fe..913ab14 100644
--- a/hw/vfio/Makefile.objs
+++ b/hw/vfio/Makefile.objs
@@ -2,4 +2,5 @@ ifeq ($(CONFIG_LINUX), y)
 obj-$(CONFIG_SOFTMMU) += common.o
 obj-$(CONFIG_PCI) += pci.o
 obj-$(CONFIG_SOFTMMU) += platform.o
+obj-$(CONFIG_SOFTMMU) += calxeda_xgmac.o
 endif
diff --git a/hw/vfio/calxeda_xgmac.c b/hw/vfio/calxeda_xgmac.c
new file mode 100644
index 0000000..5e655ae
--- /dev/null
+++ b/hw/vfio/calxeda_xgmac.c
@@ -0,0 +1,57 @@
+/*
+ * calxeda xgmac example VFIO device
+ *
+ * Copyright Linaro Limited, 2014
+ *
+ * Authors:
+ *  Eric Auger <address@hidden>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "hw/vfio/vfio-calxeda-xgmac.h"
+
+static void calxeda_xgmac_realize(DeviceState *dev, Error **errp)
+{
+    VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(dev);
+    VFIOCalxedaXgmacDeviceClass *k = VFIO_CALXEDA_XGMAC_DEVICE_GET_CLASS(dev);
+    const char compat[] = "calxeda,hb-xgmac";
+
+    if (vdev->compat == NULL) {
+        vdev->compat = g_strdup(compat);
+    } /* else use user-provided compat string */
+
+    k->parent_realize(dev, errp);
+}
+
+static const VMStateDescription vfio_platform_vmstate = {
+    .name = TYPE_VFIO_CALXEDA_XGMAC,
+    .unmigratable = 1,
+};
+
+static void vfio_calxeda_xgmac_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    VFIOCalxedaXgmacDeviceClass *vcxc =
+        VFIO_CALXEDA_XGMAC_DEVICE_CLASS(klass);
+    vcxc->parent_realize = dc->realize;
+    dc->realize = calxeda_xgmac_realize;
+    dc->desc = "VFIO Calxeda XGMAC";
+}
+
+static const TypeInfo vfio_calxeda_xgmac_dev_info = {
+    .name = TYPE_VFIO_CALXEDA_XGMAC,
+    .parent = TYPE_VFIO_PLATFORM,
+    .instance_size = sizeof(VFIOCalxedaXgmacDevice),
+    .class_init = vfio_calxeda_xgmac_class_init,
+    .class_size = sizeof(VFIOCalxedaXgmacDeviceClass),
+};
+
+static void register_calxeda_xgmac_dev_type(void)
+{
+    type_register_static(&vfio_calxeda_xgmac_dev_info);
+}
+
+type_init(register_calxeda_xgmac_dev_type)
diff --git a/include/hw/vfio/vfio-calxeda-xgmac.h 
b/include/hw/vfio/vfio-calxeda-xgmac.h
new file mode 100644
index 0000000..1529cf5
--- /dev/null
+++ b/include/hw/vfio/vfio-calxeda-xgmac.h
@@ -0,0 +1,41 @@
+/*
+ * VFIO calxeda xgmac device
+ *
+ * Copyright Linaro Limited, 2014
+ *
+ * Authors:
+ *  Eric Auger <address@hidden>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef HW_VFIO_VFIO_CALXEDA_XGMAC_H
+#define HW_VFIO_VFIO_CALXEDA_XGMAC_H
+
+#include "hw/vfio/vfio-platform.h"
+
+#define TYPE_VFIO_CALXEDA_XGMAC "vfio-calxeda-xgmac"
+
+typedef struct VFIOCalxedaXgmacDevice {
+    VFIOPlatformDevice vdev;
+} VFIOCalxedaXgmacDevice;
+
+typedef struct VFIOCalxedaXgmacDeviceClass {
+    /*< private >*/
+    VFIOPlatformDeviceClass parent_class;
+    /*< public >*/
+    DeviceRealize parent_realize;
+} VFIOCalxedaXgmacDeviceClass;
+
+#define VFIO_CALXEDA_XGMAC_DEVICE(obj) \
+     OBJECT_CHECK(VFIOCalxedaXgmacDevice, (obj), TYPE_VFIO_CALXEDA_XGMAC)
+#define VFIO_CALXEDA_XGMAC_DEVICE_CLASS(klass) \
+     OBJECT_CLASS_CHECK(VFIOCalxedaXgmacDeviceClass, (klass), \
+                        TYPE_VFIO_CALXEDA_XGMAC)
+#define VFIO_CALXEDA_XGMAC_DEVICE_GET_CLASS(obj) \
+     OBJECT_GET_CLASS(VFIOCalxedaXgmacDeviceClass, (obj), \
+                      TYPE_VFIO_CALXEDA_XGMAC)
+
+#endif
-- 
1.8.3.2