From dd70bd0d4cf2e10b0437fc75da50423612871101 Mon Sep 17 00:00:00 2001 From: Jing Liu Date: Fri, 6 Nov 2015 12:32:40 +0100 Subject: s390x/css: Factor out virtual css bridge and bus 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 Reviewed-by: Sascha Silbe Reviewed-by: Dong Jia Shi Signed-off-by: Cornelia Huck --- hw/s390x/Makefile.objs | 1 + hw/s390x/css-bridge.c | 89 +++++++++++++++++++++++++++++++++++++++++++ hw/s390x/s390-virtio-ccw.c | 1 + hw/s390x/virtio-ccw.c | 79 ++------------------------------------ hw/s390x/virtio-ccw.h | 14 +------ include/hw/s390x/css-bridge.h | 31 +++++++++++++++ 6 files changed, 127 insertions(+), 88 deletions(-) create mode 100644 hw/s390x/css-bridge.c create mode 100644 include/hw/s390x/css-bridge.h diff --git a/hw/s390x/Makefile.objs b/hw/s390x/Makefile.objs index 220361782d..141ce1a710 100644 --- a/hw/s390x/Makefile.objs +++ b/hw/s390x/Makefile.objs @@ -8,6 +8,7 @@ obj-y += ipl.o obj-y += css.o obj-y += s390-virtio-ccw.o obj-y += virtio-ccw.o +obj-y += css-bridge.o obj-y += s390-pci-bus.o s390-pci-inst.o obj-y += s390-skeys.o obj-$(CONFIG_KVM) += s390-skeys-kvm.o diff --git a/hw/s390x/css-bridge.c b/hw/s390x/css-bridge.c new file mode 100644 index 0000000000..e74cc1cfda --- /dev/null +++ b/hw/s390x/css-bridge.c @@ -0,0 +1,89 @@ +/* + * css bridge implementation + * + * Copyright 2012,2016 IBM Corp. + * Author(s): Cornelia Huck + * Pierre Morel + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "virtio-ccw.h" +#include "hw/hotplug.h" +#include "hw/sysbus.h" +#include "qemu/bitops.h" +#include "hw/s390x/css.h" +#include "hw/s390x/css-bridge.h" + +static void virtual_css_bus_reset(BusState *qbus) +{ + /* This should actually be modelled via the generic css */ + css_reset(); +} + +static void virtual_css_bus_class_init(ObjectClass *klass, void *data) +{ + BusClass *k = BUS_CLASS(klass); + + k->reset = virtual_css_bus_reset; +} + +static const TypeInfo virtual_css_bus_info = { + .name = TYPE_VIRTUAL_CSS_BUS, + .parent = TYPE_BUS, + .instance_size = sizeof(VirtualCssBus), + .class_init = virtual_css_bus_class_init, +}; + +VirtualCssBus *virtual_css_bus_init(void) +{ + VirtualCssBus *cbus; + BusState *bus; + DeviceState *dev; + + /* Create bridge device */ + dev = qdev_create(NULL, TYPE_VIRTUAL_CSS_BRIDGE); + qdev_init_nofail(dev); + + /* Create bus on bridge device */ + bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css"); + cbus = VIRTUAL_CSS_BUS(bus); + + /* Enable hotplugging */ + qbus_set_hotplug_handler(bus, dev, &error_abort); + + return cbus; + } + +/***************** Virtual-css Bus Bridge Device ********************/ + +static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) +{ + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + hc->unplug = virtio_ccw_busdev_unplug; + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); +} + +static const TypeInfo virtual_css_bridge_info = { + .name = TYPE_VIRTUAL_CSS_BRIDGE, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(SysBusDevice), + .class_init = virtual_css_bridge_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { } + } +}; + +static void virtual_css_register(void) +{ + type_register_static(&virtual_css_bridge_info); + type_register_static(&virtual_css_bus_info); +} + +type_init(virtual_css_register) diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 3b79e96b09..caf0a682a7 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -27,6 +27,7 @@ #include "hw/compat.h" #include "ipl.h" #include "hw/s390x/s390-virtio-ccw.h" +#include "hw/s390x/css-bridge.h" static const char *const reset_dev_types[] = { TYPE_VIRTUAL_CSS_BRIDGE, diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 0afc0d36a6..8f1a0e824f 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -33,31 +33,11 @@ #include "hw/s390x/css.h" #include "virtio-ccw.h" #include "trace.h" +#include "hw/s390x/css-bridge.h" static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, VirtioCcwDevice *dev); -static void virtual_css_bus_reset(BusState *qbus) -{ - /* This should actually be modelled via the generic css */ - css_reset(); -} - - -static void virtual_css_bus_class_init(ObjectClass *klass, void *data) -{ - BusClass *k = BUS_CLASS(klass); - - k->reset = virtual_css_bus_reset; -} - -static const TypeInfo virtual_css_bus_info = { - .name = TYPE_VIRTUAL_CSS_BUS, - .parent = TYPE_BUS, - .instance_size = sizeof(VirtualCssBus), - .class_init = virtual_css_bus_class_init, -}; - VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch) { VirtIODevice *vdev = NULL; @@ -123,26 +103,6 @@ static int virtio_ccw_ioeventfd_assign(DeviceState *d, EventNotifier *notifier, return s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); } -VirtualCssBus *virtual_css_bus_init(void) -{ - VirtualCssBus *cbus; - BusState *bus; - DeviceState *dev; - - /* Create bridge device */ - dev = qdev_create(NULL, TYPE_VIRTUAL_CSS_BRIDGE); - qdev_init_nofail(dev); - - /* Create bus on bridge device */ - bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css"); - cbus = VIRTUAL_CSS_BUS(bus); - - /* Enable hotplugging */ - qbus_set_hotplug_handler(bus, dev, &error_abort); - - return cbus; -} - /* Communication blocks used by several channel commands. */ typedef struct VqInfoBlockLegacy { uint64_t queue; @@ -1565,8 +1525,8 @@ static int virtio_ccw_busdev_exit(DeviceState *dev) return _info->exit(_dev); } -static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, - DeviceState *dev, Error **errp) +void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) { VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; SubchDev *sch = _dev->sch; @@ -1605,37 +1565,6 @@ static const TypeInfo virtio_ccw_device_info = { .abstract = true, }; -/***************** Virtual-css Bus Bridge Device ********************/ -/* Only required to have the virtio bus as child in the system bus */ - -static int virtual_css_bridge_init(SysBusDevice *dev) -{ - /* nothing */ - return 0; -} - -static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) -{ - SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); - HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); - DeviceClass *dc = DEVICE_CLASS(klass); - - k->init = virtual_css_bridge_init; - hc->unplug = virtio_ccw_busdev_unplug; - set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); -} - -static const TypeInfo virtual_css_bridge_info = { - .name = TYPE_VIRTUAL_CSS_BRIDGE, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(SysBusDevice), - .class_init = virtual_css_bridge_class_init, - .interfaces = (InterfaceInfo[]) { - { TYPE_HOTPLUG_HANDLER }, - { } - } -}; - /* virtio-ccw-bus */ static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, @@ -1730,7 +1659,6 @@ static const TypeInfo virtio_ccw_9p_info = { static void virtio_ccw_register(void) { type_register_static(&virtio_ccw_bus_info); - type_register_static(&virtual_css_bus_info); type_register_static(&virtio_ccw_device_info); type_register_static(&virtio_ccw_serial); type_register_static(&virtio_ccw_blk); @@ -1741,7 +1669,6 @@ static void virtio_ccw_register(void) type_register_static(&vhost_ccw_scsi); #endif type_register_static(&virtio_ccw_rng); - type_register_static(&virtual_css_bridge_info); #ifdef CONFIG_VIRTFS type_register_static(&virtio_ccw_9p_info); #endif diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h index 6144625416..11023aabb7 100644 --- a/hw/s390x/virtio-ccw.h +++ b/hw/s390x/virtio-ccw.h @@ -101,17 +101,8 @@ static inline int virtio_ccw_rev_max(VirtioCcwDevice *dev) return dev->max_rev; } -/* virtual css bridge type */ -#define TYPE_VIRTUAL_CSS_BRIDGE "virtual-css-bridge" - -/* virtual css bus type */ -typedef struct VirtualCssBus { - BusState parent_obj; -} VirtualCssBus; - -#define TYPE_VIRTUAL_CSS_BUS "virtual-css-bus" -#define VIRTUAL_CSS_BUS(obj) \ - OBJECT_CHECK(VirtualCssBus, (obj), TYPE_VIRTUAL_CSS_BUS) +void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp); /* virtio-scsi-ccw */ @@ -192,7 +183,6 @@ typedef struct VirtIORNGCcw { VirtIORNG vdev; } VirtIORNGCcw; -VirtualCssBus *virtual_css_bus_init(void); void virtio_ccw_device_update_status(SubchDev *sch); VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch); diff --git a/include/hw/s390x/css-bridge.h b/include/hw/s390x/css-bridge.h new file mode 100644 index 0000000000..ad73c1faf6 --- /dev/null +++ b/include/hw/s390x/css-bridge.h @@ -0,0 +1,31 @@ +/* + * virtual css bridge definition + * + * Copyright 2012,2016 IBM Corp. + * Author(s): Cornelia Huck + * Pierre Morel + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + +#ifndef HW_S390X_CSS_BRIDGE_H +#define HW_S390X_CSS_BRIDGE_H +#include "qom/object.h" +#include "hw/qdev-core.h" + +/* virtual css bridge */ +#define TYPE_VIRTUAL_CSS_BRIDGE "virtual-css-bridge" + +/* virtual css bus type */ +typedef struct VirtualCssBus { + BusState parent_obj; +} VirtualCssBus; + +#define TYPE_VIRTUAL_CSS_BUS "virtual-css-bus" +#define VIRTUAL_CSS_BUS(obj) \ + OBJECT_CHECK(VirtualCssBus, (obj), TYPE_VIRTUAL_CSS_BUS) +VirtualCssBus *virtual_css_bus_init(void); + +#endif -- cgit v1.2.3