[PATCH v3 23/28] xen/xen-hvm.c: introduce TYPE_XEN_I8259_PIC device

[Mark Cave-Ayland <mark.caveayland@xxxxxxxxxxx>]

This device represents the Xen PIC for an x86 machine.

Signed-off-by: Mark Cave-Ayland <mark.caveayland@xxxxxxxxxxx>
---
 hw/i386/xen/xen-hvm.c | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index af3a90987c..b2378fe3f0 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -13,6 +13,7 @@
 #include "qemu/error-report.h"
 #include "qapi/error.h"
 #include "qapi/qapi-commands-migration.h"
+#include "qom/object.h"
 #include "trace.h"
 
 #include "hw/core/hw-error.h"
@@ -69,6 +70,12 @@ static unsigned long *dirty_bitmap;
 static Notifier suspend;
 static Notifier wakeup;
 
+#define TYPE_XEN_I8259_PIC "xen-i8259-pic"
+
+DECLARE_OBJ_CHECKERS(DeviceState, DeviceClass, XEN_I8259_PIC,
+                     TYPE_XEN_I8259_PIC)
+
+
 /* Xen specific function for piix pci */
 
 int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
@@ -114,9 +121,28 @@ static void xen_set_irq(void *opaque, int irq, int level)
 
 qemu_irq *xen_i8259_init(void)
 {
-    return qemu_allocate_irqs(xen_set_irq, NULL, 16);
+    qemu_irq *irq_set;
+    DeviceState *dev;
+    int i;
+
+    irq_set = g_new0(qemu_irq, 16);
+
+    dev = qdev_new(TYPE_XEN_I8259_PIC);
+    qdev_realize_and_unref(dev, NULL, &error_fatal);
+
+    for (i = 0 ; i < 16; i++) {
+        irq_set[i] = qdev_get_gpio_in(dev, i);
+    }
+
+    return irq_set;
 }
 
+static void xen_i8259_pic_init(Object *obj)
+{
+    qdev_init_gpio_in(DEVICE(obj), xen_set_irq, 16);
+}
+
+
 /* Memory Ops */
 
 static void xen_ram_init(PCMachineState *pcms,
@@ -760,3 +786,13 @@ void arch_handle_ioreq(XenIOState *state, ioreq_t *req)
         hw_error("Invalid ioreq type 0x%x\n", req->type);
     }
 }
+
+static const TypeInfo xen_i8259_type_infos[] = {
+    {
+        .name = TYPE_XEN_I8259_PIC,
+        .parent = TYPE_DEVICE,
+        .instance_init = xen_i8259_pic_init,
+    },
+};
+
+DEFINE_TYPES(xen_i8259_type_infos)
-- 
2.43.0