Add TEWS TPCI200 IndustryPack emulation

The TPCI200 is a PCI board that supports up to 4 IndustryPack modules.

A new bus type called 'IndustryPack' has been created so any
compatible module can be attached to this board.

Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alberto Garcia <agarcia@igalia.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 115 insertions, 0 deletions

diff --git a/hw/ipack.c b/hw/ipack.c
new file mode 100644
index 0000000000..e15540d5cd
--- /dev/null
+++ b/hw/ipack.c
@@ -0,0 +1,115 @@
+/*
+ * QEMU IndustryPack emulation
+ *
+ * Copyright (C) 2012 Igalia, S.L.
+ * Author: Alberto Garcia <agarcia@igalia.com>
+ *
+ * This code is licensed under the GNU GPL v2 or (at your option) any
+ * later version.
+ */
+
+#include "ipack.h"
+
+IPackDevice *ipack_device_find(IPackBus *bus, int32_t slot)
+{
+    BusChild *kid;
+
+    QTAILQ_FOREACH(kid, &BUS(bus)->children, sibling) {
+        DeviceState *qdev = kid->child;
+        IPackDevice *ip = IPACK_DEVICE(qdev);
+        if (ip->slot == slot) {
+            return ip;
+        }
+    }
+    return NULL;
+}
+
+void ipack_bus_new_inplace(IPackBus *bus, DeviceState *parent,
+                           const char *name, uint8_t n_slots,
+                           qemu_irq_handler handler)
+{
+    qbus_create_inplace(&bus->qbus, TYPE_IPACK_BUS, parent, name);
+    bus->n_slots = n_slots;
+    bus->set_irq = handler;
+}
+
+static int ipack_device_dev_init(DeviceState *qdev)
+{
+    IPackBus *bus = IPACK_BUS(qdev_get_parent_bus(qdev));
+    IPackDevice *dev = IPACK_DEVICE(qdev);
+    IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev);
+
+    if (dev->slot < 0) {
+        dev->slot = bus->free_slot;
+    }
+    if (dev->slot >= bus->n_slots) {
+        return -1;
+    }
+    bus->free_slot = dev->slot + 1;
+
+    dev->irq = qemu_allocate_irqs(bus->set_irq, dev, 2);
+
+    return k->init(dev);
+}
+
+static int ipack_device_dev_exit(DeviceState *qdev)
+{
+    IPackDevice *dev = IPACK_DEVICE(qdev);
+    IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev);
+
+    if (k->exit) {
+        k->exit(dev);
+    }
+
+    qemu_free_irqs(dev->irq);
+
+    return 0;
+}
+
+static Property ipack_device_props[] = {
+    DEFINE_PROP_INT32("slot", IPackDevice, slot, -1),
+    DEFINE_PROP_END_OF_LIST()
+};
+
+static void ipack_device_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *k = DEVICE_CLASS(klass);
+    k->bus_type = TYPE_IPACK_BUS;
+    k->init = ipack_device_dev_init;
+    k->exit = ipack_device_dev_exit;
+    k->props = ipack_device_props;
+}
+
+const VMStateDescription vmstate_ipack_device = {
+    .name = "ipack_device",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .fields      = (VMStateField[]) {
+        VMSTATE_INT32(slot, IPackDevice),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const TypeInfo ipack_device_info = {
+    .name          = TYPE_IPACK_DEVICE,
+    .parent        = TYPE_DEVICE,
+    .instance_size = sizeof(IPackDevice),
+    .class_size    = sizeof(IPackDeviceClass),
+    .class_init    = ipack_device_class_init,
+    .abstract      = true,
+};
+
+static const TypeInfo ipack_bus_info = {
+    .name = TYPE_IPACK_BUS,
+    .parent = TYPE_BUS,
+    .instance_size = sizeof(IPackBus),
+};
+
+static void ipack_register_types(void)
+{
+    type_register_static(&ipack_device_info);
+    type_register_static(&ipack_bus_info);
+}
+
+type_init(ipack_register_types)