[Qemu-devel] [RFC PATCH 3/3] hw/vfio: add pl330 device support

[Baptiste Reynal <b.reynal@virtualopensystems.com>]

Create a meta-device for PL330 DMA.

Signed-off-by: Baptiste Reynal <b.reynal@virtualopensystems.com>
---
 hw/arm/sysbus-fdt.c          |  2 ++
 hw/vfio/Makefile.objs        |  1 +
 hw/vfio/pl330.c              | 41 +++++++++++++++++++++++++++++++++++++++++
 include/hw/vfio/vfio-pl330.h | 26 ++++++++++++++++++++++++++
 4 files changed, 70 insertions(+)
 create mode 100644 hw/vfio/pl330.c
 create mode 100644 include/hw/vfio/vfio-pl330.h

diff --git a/hw/arm/sysbus-fdt.c b/hw/arm/sysbus-fdt.c
index 41b4c87..1141185 100644
--- a/hw/arm/sysbus-fdt.c
+++ b/hw/arm/sysbus-fdt.c
@@ -28,6 +28,7 @@
 #include "sysemu/sysemu.h"
 #include "hw/vfio/vfio-platform.h"
 #include "hw/vfio/vfio-calxeda-xgmac.h"
+#include "hw/vfio/vfio-pl330.h"
 
 /*
  * internal struct that contains the information to create dynamic
@@ -163,6 +164,7 @@ fail:
 /* list of supported dynamic sysbus devices */
 static const NodeCreationPair add_fdt_node_functions[] = {
 {TYPE_VFIO_CALXEDA_XGMAC, add_generic_fdt_node},
+{TYPE_VFIO_PL330, add_generic_fdt_node},
 {"", NULL}, /*last element*/
 };
 
diff --git a/hw/vfio/Makefile.objs b/hw/vfio/Makefile.objs
index 913ab14..be3023b 100644
--- a/hw/vfio/Makefile.objs
+++ b/hw/vfio/Makefile.objs
@@ -3,4 +3,5 @@ obj-$(CONFIG_SOFTMMU) += common.o
 obj-$(CONFIG_PCI) += pci.o
 obj-$(CONFIG_SOFTMMU) += platform.o
 obj-$(CONFIG_SOFTMMU) += calxeda_xgmac.o
+obj-$(CONFIG_SOFTMMU) += pl330.o
 endif
diff --git a/hw/vfio/pl330.c b/hw/vfio/pl330.c
new file mode 100644
index 0000000..a409024
--- /dev/null
+++ b/hw/vfio/pl330.c
@@ -0,0 +1,41 @@
+#include "hw/vfio/vfio-pl330.h"
+
+static void pl330_realize(DeviceState *dev, Error **errp)
+{
+    VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(dev);
+    VFIOPl330DeviceClass *k = VFIO_PL330_DEVICE_GET_CLASS(dev);
+
+    vdev->compat = g_strdup("arm,pl330;arm,primecell");
+
+    k->parent_realize(dev, errp);
+}
+
+static const VMStateDescription vfio_platform_vmstate = {
+    .name = TYPE_VFIO_PL330,
+    .unmigratable = 1,
+};
+
+static void vfio_pl330_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    VFIOPl330DeviceClass *vpc =
+        VFIO_PL330_DEVICE_CLASS(klass);
+    vpc->parent_realize = dc->realize;
+    dc->realize = pl330_realize;
+    dc->desc = "VFIO PL330";
+}
+
+static const TypeInfo vfio_pl330_dev_info = {
+    .name = TYPE_VFIO_PL330,
+    .parent = TYPE_VFIO_PLATFORM,
+    .instance_size = sizeof(VFIOPl330Device),
+    .class_init = vfio_pl330_class_init,
+    .class_size = sizeof(VFIOPl330DeviceClass),
+};
+
+static void register_pl330_dev_type(void)
+{
+    type_register_static(&vfio_pl330_dev_info);
+}
+
+type_init(register_pl330_dev_type)
diff --git a/include/hw/vfio/vfio-pl330.h b/include/hw/vfio/vfio-pl330.h
new file mode 100644
index 0000000..1cdf039
--- /dev/null
+++ b/include/hw/vfio/vfio-pl330.h
@@ -0,0 +1,26 @@
+#ifndef HW_VFIO_VFIO_PL330
+#define HW_VFIO_VFIO_PL330
+
+#include "hw/vfio/vfio-platform.h"
+
+#define TYPE_VFIO_PL330 "vfio-pl330"
+
+typedef struct VFIOPl330Device {
+    VFIOPlatformDevice vdev;
+} VFIOPl330Device;
+
+typedef struct VFIOPl330DeviceClass {
+    VFIOPlatformDeviceClass parent_class;
+    DeviceRealize parent_realize;
+} VFIOPl330DeviceClass;
+
+#define VFIO_PL330_DEVICE(obj) \
+     OBJECT_CHECK(VFIOPl330Device, (obj), TYPE_VFIO_PL330)
+#define VFIO_PL330_DEVICE_CLASS(klass) \
+     OBJECT_CLASS_CHECK(VFIOPl330DeviceClass, (klass), \
+                        TYPE_VFIO_PL330)
+#define VFIO_PL330_DEVICE_GET_CLASS(obj) \
+     OBJECT_GET_CLASS(VFIOPl330DeviceClass, (obj), \
+                        TYPE_VFIO_PL330)
+
+#endif
-- 
2.1.3