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Currently, common base layers virtual css bridge and bus are defined in hw/s390x/virtio-ccw.c(h). In order to support multiple types of devices in the virtual channel subsystem, especially non virtio-ccw, refactoring work needs to be done. This work is just a pure code move without any functional change except dropping an empty function virtual_css_bridge_init() and virtio_ccw_busdev_unplug() changing. virtio_ccw_busdev_unplug() is specific to virtio-ccw but gets referenced from the common virtual css bridge code. To keep the functional changes to a minimum we export this function from virtio-ccw.c and continue to reference it inside virtual_css_bridge_class_init() (now living in hw/s390x/css-bridge.c). A follow-up patch will clean this up. Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/*
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* css bridge implementation
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*
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* Copyright 2012,2016 IBM Corp.
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* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
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* Pierre Morel <pmorel@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "virtio-ccw.h"
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#include "hw/hotplug.h"
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#include "hw/sysbus.h"
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#include "qemu/bitops.h"
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#include "hw/s390x/css.h"
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#include "hw/s390x/css-bridge.h"
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static void virtual_css_bus_reset(BusState *qbus)
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{
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/* This should actually be modelled via the generic css */
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css_reset();
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}
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static void virtual_css_bus_class_init(ObjectClass *klass, void *data)
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{
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BusClass *k = BUS_CLASS(klass);
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k->reset = virtual_css_bus_reset;
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}
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static const TypeInfo virtual_css_bus_info = {
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.name = TYPE_VIRTUAL_CSS_BUS,
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.parent = TYPE_BUS,
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.instance_size = sizeof(VirtualCssBus),
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.class_init = virtual_css_bus_class_init,
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};
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VirtualCssBus *virtual_css_bus_init(void)
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{
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VirtualCssBus *cbus;
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BusState *bus;
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DeviceState *dev;
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/* Create bridge device */
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dev = qdev_create(NULL, TYPE_VIRTUAL_CSS_BRIDGE);
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qdev_init_nofail(dev);
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/* Create bus on bridge device */
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bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css");
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cbus = VIRTUAL_CSS_BUS(bus);
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/* Enable hotplugging */
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qbus_set_hotplug_handler(bus, dev, &error_abort);
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return cbus;
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}
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/***************** Virtual-css Bus Bridge Device ********************/
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static void virtual_css_bridge_class_init(ObjectClass *klass, void *data)
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{
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HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
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DeviceClass *dc = DEVICE_CLASS(klass);
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hc->unplug = virtio_ccw_busdev_unplug;
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set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
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}
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static const TypeInfo virtual_css_bridge_info = {
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.name = TYPE_VIRTUAL_CSS_BRIDGE,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(SysBusDevice),
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.class_init = virtual_css_bridge_class_init,
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.interfaces = (InterfaceInfo[]) {
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{ TYPE_HOTPLUG_HANDLER },
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{ }
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}
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};
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static void virtual_css_register(void)
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{
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type_register_static(&virtual_css_bridge_info);
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type_register_static(&virtual_css_bus_info);
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}
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type_init(virtual_css_register)
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