diff options
Diffstat (limited to 'hw/s390x/virtio-ccw.c')
| -rw-r--r-- | hw/s390x/virtio-ccw.c | 271 |
1 files changed, 53 insertions, 218 deletions
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 8b709e362e..a554a24d06 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; @@ -117,32 +97,13 @@ static int virtio_ccw_ioeventfd_assign(DeviceState *d, EventNotifier *notifier, int n, bool assign) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); - SubchDev *sch = dev->sch; + CcwDevice *ccw_dev = CCW_DEVICE(dev); + SubchDev *sch = ccw_dev->sch; uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid; 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, "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; @@ -234,6 +195,8 @@ static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info, static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev) { + CcwDevice *ccw_dev = CCW_DEVICE(dev); + virtio_ccw_stop_ioeventfd(dev); virtio_reset(vdev); if (dev->indicators) { @@ -248,7 +211,7 @@ static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev) release_indicator(&dev->routes.adapter, dev->summary_indicator); dev->summary_indicator = NULL; } - dev->sch->thinint_active = false; + ccw_dev->sch->thinint_active = false; } static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len, @@ -703,116 +666,28 @@ static void virtio_sch_disable_cb(SubchDev *sch) static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp) { - unsigned int schid; - bool found = false; - SubchDev *sch; - Error *err = NULL; VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev); + CcwDevice *ccw_dev = CCW_DEVICE(dev); + SubchDev *sch = css_create_virtual_sch(ccw_dev->bus_id, errp); + Error *err = NULL; - sch = g_malloc0(sizeof(SubchDev)); - - sch->driver_data = dev; - dev->sch = sch; - - dev->indicators = NULL; - - /* Initialize subchannel structure. */ - sch->channel_prog = 0x0; - sch->last_cmd_valid = false; - sch->thinint_active = false; - /* - * Use a device number if provided. Otherwise, fall back to subchannel - * number. - */ - if (dev->bus_id.valid) { - /* Enforce use of virtual cssid. */ - if (dev->bus_id.cssid != VIRTUAL_CSSID) { - error_setg(errp, "cssid %x not valid for virtio devices", - dev->bus_id.cssid); - goto out_err; - } - if (css_devno_used(dev->bus_id.cssid, dev->bus_id.ssid, - dev->bus_id.devid)) { - error_setg(errp, "Device %x.%x.%04x already exists", - dev->bus_id.cssid, dev->bus_id.ssid, - dev->bus_id.devid); - goto out_err; - } - sch->cssid = dev->bus_id.cssid; - sch->ssid = dev->bus_id.ssid; - sch->devno = dev->bus_id.devid; - - /* Find the next free id. */ - for (schid = 0; schid <= MAX_SCHID; schid++) { - if (!css_find_subch(1, sch->cssid, sch->ssid, schid)) { - sch->schid = schid; - css_subch_assign(sch->cssid, sch->ssid, sch->schid, - sch->devno, sch); - found = true; - break; - } - } - if (!found) { - error_setg(errp, "No free subchannel found for %x.%x.%04x", - sch->cssid, sch->ssid, sch->devno); - goto out_err; - } - trace_virtio_ccw_new_device(sch->cssid, sch->ssid, sch->schid, - sch->devno, "user-configured"); - } else { - unsigned int cssid = VIRTUAL_CSSID, ssid, devno; - - for (ssid = 0; ssid <= MAX_SSID; ssid++) { - for (schid = 0; schid <= MAX_SCHID; schid++) { - if (!css_find_subch(1, cssid, ssid, schid)) { - sch->cssid = cssid; - sch->ssid = ssid; - sch->schid = schid; - devno = schid; - /* - * If the devno is already taken, look further in this - * subchannel set. - */ - while (css_devno_used(cssid, ssid, devno)) { - if (devno == MAX_SCHID) { - devno = 0; - } else if (devno == schid - 1) { - error_setg(errp, "No free devno found"); - goto out_err; - } else { - devno++; - } - } - sch->devno = devno; - css_subch_assign(cssid, ssid, schid, devno, sch); - found = true; - break; - } - } - if (found) { - break; - } - } - if (!found) { - error_setg(errp, "Virtual channel subsystem is full!"); - goto out_err; - } - trace_virtio_ccw_new_device(cssid, ssid, schid, devno, - "auto-configured"); + if (!sch) { + return; } - /* Build initial schib. */ - css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); - + sch->driver_data = dev; sch->ccw_cb = virtio_ccw_cb; sch->disable_cb = virtio_sch_disable_cb; - - /* Build senseid data. */ - memset(&sch->id, 0, sizeof(SenseId)); sch->id.reserved = 0xff; sch->id.cu_type = VIRTIO_CCW_CU_TYPE; - + ccw_dev->sch = sch; + dev->indicators = NULL; dev->revision = -1; + css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); + + trace_virtio_ccw_new_device( + sch->cssid, sch->ssid, sch->schid, sch->devno, + ccw_dev->bus_id.valid ? "user-configured" : "auto-configured"); if (k->realize) { k->realize(dev, &err); @@ -820,19 +695,15 @@ static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp) if (err) { error_propagate(errp, err); css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); - goto out_err; + ccw_dev->sch = NULL; + g_free(sch); } - - return; - -out_err: - dev->sch = NULL; - g_free(sch); } static int virtio_ccw_exit(VirtioCcwDevice *dev) { - SubchDev *sch = dev->sch; + CcwDevice *ccw_dev = CCW_DEVICE(dev); + SubchDev *sch = ccw_dev->sch; if (sch) { css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); @@ -1013,7 +884,9 @@ static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp) */ static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) { - return container_of(d, VirtioCcwDevice, parent_obj); + CcwDevice *ccw_dev = to_ccw_dev_fast(d); + + return container_of(ccw_dev, VirtioCcwDevice, parent_obj); } static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc, @@ -1042,7 +915,8 @@ static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc, static void virtio_ccw_notify(DeviceState *d, uint16_t vector) { VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); - SubchDev *sch = dev->sch; + CcwDevice *ccw_dev = to_ccw_dev_fast(d); + SubchDev *sch = ccw_dev->sch; uint64_t indicators; /* queue indicators + secondary indicators */ @@ -1100,9 +974,10 @@ static void virtio_ccw_reset(DeviceState *d) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); + CcwDevice *ccw_dev = CCW_DEVICE(d); virtio_ccw_reset_virtio(dev, vdev); - css_reset_sch(dev->sch); + css_reset_sch(ccw_dev->sch); } static void virtio_ccw_vmstate_change(DeviceState *d, bool running) @@ -1118,7 +993,7 @@ static void virtio_ccw_vmstate_change(DeviceState *d, bool running) static bool virtio_ccw_query_guest_notifiers(DeviceState *d) { - VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); + CcwDevice *dev = CCW_DEVICE(d); return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA); } @@ -1126,8 +1001,9 @@ static bool virtio_ccw_query_guest_notifiers(DeviceState *d) static int virtio_ccw_get_mappings(VirtioCcwDevice *dev) { int r; + CcwDevice *ccw_dev = CCW_DEVICE(dev); - if (!dev->sch->thinint_active) { + if (!ccw_dev->sch->thinint_active) { return -EINVAL; } @@ -1249,7 +1125,8 @@ static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); - bool with_irqfd = dev->sch->thinint_active && kvm_irqfds_enabled(); + CcwDevice *ccw_dev = CCW_DEVICE(d); + bool with_irqfd = ccw_dev->sch->thinint_active && kvm_irqfds_enabled(); int r, n; if (with_irqfd && assigned) { @@ -1308,7 +1185,8 @@ static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f) static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); - SubchDev *s = dev->sch; + CcwDevice *ccw_dev = CCW_DEVICE(d); + SubchDev *s = ccw_dev->sch; VirtIODevice *vdev = virtio_ccw_get_vdev(s); subch_device_save(s, f); @@ -1342,7 +1220,8 @@ static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f) static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); - SubchDev *s = dev->sch; + CcwDevice *ccw_dev = CCW_DEVICE(d); + SubchDev *s = ccw_dev->sch; VirtIODevice *vdev = virtio_ccw_get_vdev(s); int len; @@ -1387,7 +1266,8 @@ static void virtio_ccw_device_plugged(DeviceState *d, Error **errp) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); - SubchDev *sch = dev->sch; + CcwDevice *ccw_dev = CCW_DEVICE(d); + SubchDev *sch = ccw_dev->sch; int n = virtio_get_num_queues(vdev); if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) { @@ -1431,7 +1311,7 @@ static void virtio_ccw_device_unplugged(DeviceState *d) /**************** Virtio-ccw Bus Device Descriptions *******************/ static Property virtio_ccw_net_properties[] = { - DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), + DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, @@ -1460,7 +1340,7 @@ static const TypeInfo virtio_ccw_net = { }; static Property virtio_ccw_blk_properties[] = { - DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), + DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, @@ -1489,7 +1369,7 @@ static const TypeInfo virtio_ccw_blk = { }; static Property virtio_ccw_serial_properties[] = { - DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), + DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, @@ -1518,7 +1398,7 @@ static const TypeInfo virtio_ccw_serial = { }; static Property virtio_ccw_balloon_properties[] = { - DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), + DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, @@ -1547,7 +1427,7 @@ static const TypeInfo virtio_ccw_balloon = { }; static Property virtio_ccw_scsi_properties[] = { - DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), + DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, @@ -1577,7 +1457,7 @@ static const TypeInfo virtio_ccw_scsi = { #ifdef CONFIG_VHOST_SCSI static Property vhost_ccw_scsi_properties[] = { - DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), + DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, VIRTIO_CCW_MAX_REV), DEFINE_PROP_END_OF_LIST(), @@ -1615,7 +1495,7 @@ static void virtio_ccw_rng_instance_init(Object *obj) } static Property virtio_ccw_rng_properties[] = { - DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), + DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, @@ -1662,29 +1542,17 @@ static int virtio_ccw_busdev_exit(DeviceState *dev) static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { - VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; - SubchDev *sch = _dev->sch; + VirtioCcwDevice *_dev = to_virtio_ccw_dev_fast(dev); virtio_ccw_stop_ioeventfd(_dev); - - /* - * We should arrive here only for device_del, since we don't support - * direct hot(un)plug of channels, but only through virtio. - */ - assert(sch != NULL); - /* Subchannel is now disabled and no longer valid. */ - sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | - PMCW_FLAGS_MASK_DNV); - - css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); - - object_unparent(OBJECT(dev)); } static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); + CCWDeviceClass *k = CCW_DEVICE_CLASS(dc); + k->unplug = virtio_ccw_busdev_unplug; dc->realize = virtio_ccw_busdev_realize; dc->exit = virtio_ccw_busdev_exit; dc->bus_type = TYPE_VIRTUAL_CSS_BUS; @@ -1692,44 +1560,13 @@ static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) static const TypeInfo virtio_ccw_device_info = { .name = TYPE_VIRTIO_CCW_DEVICE, - .parent = TYPE_DEVICE, + .parent = TYPE_CCW_DEVICE, .instance_size = sizeof(VirtioCcwDevice), .class_init = virtio_ccw_device_class_init, .class_size = sizeof(VirtIOCCWDeviceClass), .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 = "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, @@ -1775,7 +1612,7 @@ static const TypeInfo virtio_ccw_bus_info = { #ifdef CONFIG_VIRTFS static Property virtio_ccw_9p_properties[] = { - DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), + DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, @@ -1824,7 +1661,6 @@ 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); @@ -1835,7 +1671,6 @@ 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 |