/* * virtio ccw target implementation * * Copyright 2012,2015 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 "hw/hw.h" #include "sysemu/block-backend.h" #include "sysemu/blockdev.h" #include "sysemu/sysemu.h" #include "sysemu/kvm.h" #include "net/net.h" #include "hw/virtio/virtio.h" #include "hw/virtio/virtio-serial.h" #include "hw/virtio/virtio-net.h" #include "hw/sysbus.h" #include "qemu/bitops.h" #include "qemu/error-report.h" #include "hw/virtio/virtio-access.h" #include "hw/virtio/virtio-bus.h" #include "hw/s390x/adapter.h" #include "hw/s390x/s390_flic.h" #include "hw/s390x/ioinst.h" #include "hw/s390x/css.h" #include "virtio-ccw.h" #include "trace.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; VirtioCcwDevice *dev = sch->driver_data; if (dev) { vdev = virtio_bus_get_device(&dev->bus); } return vdev; } static int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n, bool assign, bool set_handler) { VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); VirtQueue *vq = virtio_get_queue(vdev, n); EventNotifier *notifier = virtio_queue_get_host_notifier(vq); int r = 0; SubchDev *sch = dev->sch; uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid; if (assign) { r = event_notifier_init(notifier, 1); if (r < 0) { error_report("%s: unable to init event notifier: %d", __func__, r); return r; } virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler); r = s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); if (r < 0) { error_report("%s: unable to assign ioeventfd: %d", __func__, r); virtio_queue_set_host_notifier_fd_handler(vq, false, false); event_notifier_cleanup(notifier); return r; } } else { virtio_queue_set_host_notifier_fd_handler(vq, false, false); s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); event_notifier_cleanup(notifier); } return r; } static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev) { VirtIODevice *vdev; int n, r; if (!(dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) || dev->ioeventfd_disabled || dev->ioeventfd_started) { return; } vdev = virtio_bus_get_device(&dev->bus); for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { if (!virtio_queue_get_num(vdev, n)) { continue; } r = virtio_ccw_set_guest2host_notifier(dev, n, true, true); if (r < 0) { goto assign_error; } } dev->ioeventfd_started = true; return; assign_error: while (--n >= 0) { if (!virtio_queue_get_num(vdev, n)) { continue; } r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); assert(r >= 0); } dev->ioeventfd_started = false; /* Disable ioeventfd for this device. */ dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; error_report("%s: failed. Fallback to userspace (slower).", __func__); } static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev) { VirtIODevice *vdev; int n, r; if (!dev->ioeventfd_started) { return; } vdev = virtio_bus_get_device(&dev->bus); for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { if (!virtio_queue_get_num(vdev, n)) { continue; } r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); assert(r >= 0); } dev->ioeventfd_started = false; } 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; uint32_t align; uint16_t index; uint16_t num; } QEMU_PACKED VqInfoBlockLegacy; typedef struct VqInfoBlock { uint64_t desc; uint32_t res0; uint16_t index; uint16_t num; uint64_t avail; uint64_t used; } QEMU_PACKED VqInfoBlock; typedef struct VqConfigBlock { uint16_t index; uint16_t num_max; } QEMU_PACKED VqConfigBlock; typedef struct VirtioFeatDesc { uint32_t features; uint8_t index; } QEMU_PACKED VirtioFeatDesc; typedef struct VirtioThinintInfo { hwaddr summary_indicator; hwaddr device_indicator; uint64_t ind_bit; uint8_t isc; } QEMU_PACKED VirtioThinintInfo; typedef struct VirtioRevInfo { uint16_t revision; uint16_t length; uint8_t data[0]; } QEMU_PACKED VirtioRevInfo; /* Specify where the virtqueues for the subchannel are in guest memory. */ static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info, VqInfoBlockLegacy *linfo) { VirtIODevice *vdev = virtio_ccw_get_vdev(sch); uint16_t index = info ? info->index : linfo->index; uint16_t num = info ? info->num : linfo->num; uint64_t desc = info ? info->desc : linfo->queue; if (index >= VIRTIO_CCW_QUEUE_MAX) { return -EINVAL; } /* Current code in virtio.c relies on 4K alignment. */ if (linfo && desc && (linfo->align != 4096)) { return -EINVAL; } if (!vdev) { return -EINVAL; } if (info) { virtio_queue_set_rings(vdev, index, desc, info->avail, info->used); } else { virtio_queue_set_addr(vdev, index, desc); } if (!desc) { virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR); } else { if (info) { /* virtio-1 allows changing the ring size. */ if (virtio_queue_get_num(vdev, index) < num) { /* Fail if we exceed the maximum number. */ return -EINVAL; } virtio_queue_set_num(vdev, index, num); } else if (virtio_queue_get_num(vdev, index) > num) { /* Fail if we don't have a big enough queue. */ return -EINVAL; } /* We ignore possible increased num for legacy for compatibility. */ virtio_queue_set_vector(vdev, index, index); } /* tell notify handler in case of config change */ vdev->config_vector = VIRTIO_CCW_QUEUE_MAX; return 0; } static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev) { virtio_ccw_stop_ioeventfd(dev); virtio_reset(vdev); if (dev->indicators) { release_indicator(&dev->routes.adapter, dev->indicators); dev->indicators = NULL; } if (dev->indicators2) { release_indicator(&dev->routes.adapter, dev->indicators2); dev->indicators2 = NULL; } if (dev->summary_indicator) { release_indicator(&dev->routes.adapter, dev->summary_indicator); dev->summary_indicator = NULL; } dev->sch->thinint_active = false; } static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len, bool is_legacy) { int ret; VqInfoBlock info; VqInfoBlockLegacy linfo; size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info); if (check_len) { if (ccw.count != info_len) { return -EINVAL; } } else if (ccw.count < info_len) { /* Can't execute command. */ return -EINVAL; } if (!ccw.cda) { return -EFAULT; } if (is_legacy) { linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda, MEMTXATTRS_UNSPECIFIED, NULL); linfo.align = address_space_ldl_be(&address_space_memory, ccw.cda + sizeof(linfo.queue), MEMTXATTRS_UNSPECIFIED, NULL); linfo.index = address_space_lduw_be(&address_space_memory, ccw.cda + sizeof(linfo.queue) + sizeof(linfo.align), MEMTXATTRS_UNSPECIFIED, NULL); linfo.num = address_space_lduw_be(&address_space_memory, ccw.cda + sizeof(linfo.queue) + sizeof(linfo.align) + sizeof(linfo.index), MEMTXATTRS_UNSPECIFIED, NULL); ret = virtio_ccw_set_vqs(sch, NULL, &linfo); } else { info.desc = address_space_ldq_be(&address_space_memory, ccw.cda, MEMTXATTRS_UNSPECIFIED, NULL); info.index = address_space_lduw_be(&address_space_memory, ccw.cda + sizeof(info.desc) + sizeof(info.res0), MEMTXATTRS_UNSPECIFIED, NULL); info.num = address_space_lduw_be(&address_space_memory, ccw.cda + sizeof(info.desc) + sizeof(info.res0) + sizeof(info.index), MEMTXATTRS_UNSPECIFIED, NULL); info.avail = address_space_ldq_be(&address_space_memory, ccw.cda + sizeof(info.desc) + sizeof(info.res0) + sizeof(info.index) + sizeof(info.num), MEMTXATTRS_UNSPECIFIED, NULL); info.used = address_space_ldq_be(&address_space_memory, ccw.cda + sizeof(info.desc) + sizeof(info.res0) + sizeof(info.index) + sizeof(info.num) + sizeof(info.avail), MEMTXATTRS_UNSPECIFIED, NULL); ret = virtio_ccw_set_vqs(sch, &info, NULL); } sch->curr_status.scsw.count = 0; return ret; } static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) { int ret; VirtioRevInfo revinfo; uint8_t status; VirtioFeatDesc features; void *config; hwaddr indicators; VqConfigBlock vq_config; VirtioCcwDevice *dev = sch->driver_data; VirtIODevice *vdev = virtio_ccw_get_vdev(sch); bool check_len; int len; hwaddr hw_len; VirtioThinintInfo *thinint; if (!dev) { return -EINVAL; } trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid, ccw.cmd_code); check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC)); /* Look at the command. */ switch (ccw.cmd_code) { case CCW_CMD_SET_VQ: ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1); break; case CCW_CMD_VDEV_RESET: virtio_ccw_reset_virtio(dev, vdev); ret = 0; break; case CCW_CMD_READ_FEAT: if (check_len) { if (ccw.count != sizeof(features)) { ret = -EINVAL; break; } } else if (ccw.count < sizeof(features)) { /* Can't execute command. */ ret = -EINVAL; break; } if (!ccw.cda) { ret = -EFAULT; } else { features.index = address_space_ldub(&address_space_memory, ccw.cda + sizeof(features.features), MEMTXATTRS_UNSPECIFIED, NULL); if (features.index == 0) { if (dev->revision >= 1) { /* Don't offer legacy features for modern devices. */ features.features = (uint32_t) (vdev->host_features & ~VIRTIO_LEGACY_FEATURES); } else { features.features = (uint32_t)vdev->host_features; } } else if ((features.index == 1) && (dev->revision >= 1)) { /* * Only offer feature bits beyond 31 if the guest has * negotiated at least revision 1. */ features.features = (uint32_t)(vdev->host_features >> 32); } else { /* Return zeroes if the guest supports more feature bits. */ features.features = 0; } address_space_stl_le(&address_space_memory, ccw.cda, features.features, MEMTXATTRS_UNSPECIFIED, NULL); sch->curr_status.scsw.count = ccw.count - sizeof(features); ret = 0; } break; case CCW_CMD_WRITE_FEAT: if (check_len) { if (ccw.count != sizeof(features)) { ret = -EINVAL; break; } } else if (ccw.count < sizeof(features)) { /* Can't execute command. */ ret = -EINVAL; break; } if (!ccw.cda) { ret = -EFAULT; } else { features.index = address_space_ldub(&address_space_memory, ccw.cda + sizeof(features.features), MEMTXATTRS_UNSPECIFIED, NULL); features.features = address_space_ldl_le(&address_space_memory, ccw.cda, MEMTXATTRS_UNSPECIFIED, NULL); if (features.index == 0) { virtio_set_features(vdev, (vdev->guest_features & 0xffffffff00000000ULL) | features.features); } else if ((features.index == 1) && (dev->revision >= 1)) { /* * If the guest did not negotiate at least revision 1, * we did not offer it any feature bits beyond 31. Such a * guest passing us any bit here is therefore buggy. */ virtio_set_features(vdev, (vdev->guest_features & 0x00000000ffffffffULL) | ((uint64_t)features.features << 32)); } else { /* * If the guest supports more feature bits, assert that it * passes us zeroes for those we don't support. */ if (features.features) { fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n", features.index, features.features); /* XXX: do a unit check here? */ } } sch->curr_status.scsw.count = ccw.count - sizeof(features); ret = 0; } break; case CCW_CMD_READ_CONF: if (check_len) { if (ccw.count > vdev->config_len) { ret = -EINVAL; break; } } len = MIN(ccw.count, vdev->config_len); if (!ccw.cda) { ret = -EFAULT; } else { virtio_bus_get_vdev_config(&dev->bus, vdev->config); /* XXX config space endianness */ cpu_physical_memory_write(ccw.cda, vdev->config, len); sch->curr_status.scsw.count = ccw.count - len; ret = 0; } break; case CCW_CMD_WRITE_CONF: if (check_len) { if (ccw.count > vdev->config_len) { ret = -EINVAL; break; } } len = MIN(ccw.count, vdev->config_len); hw_len = len; if (!ccw.cda) { ret = -EFAULT; } else { config = cpu_physical_memory_map(ccw.cda, &hw_len, 0); if (!config) { ret = -EFAULT; } else { len = hw_len; /* XXX config space endianness */ memcpy(vdev->config, config, len); cpu_physical_memory_unmap(config, hw_len, 0, hw_len); virtio_bus_set_vdev_config(&dev->bus, vdev->config); sch->curr_status.scsw.count = ccw.count - len; ret = 0; } } break; case CCW_CMD_WRITE_STATUS: if (check_len) { if (ccw.count != sizeof(status)) { ret = -EINVAL; break; } } else if (ccw.count < sizeof(status)) { /* Can't execute command. */ ret = -EINVAL; break; } if (!ccw.cda) { ret = -EFAULT; } else { status = address_space_ldub(&address_space_memory, ccw.cda, MEMTXATTRS_UNSPECIFIED, NULL); if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) { virtio_ccw_stop_ioeventfd(dev); } if (virtio_set_status(vdev, status) == 0) { if (vdev->status == 0) { virtio_ccw_reset_virtio(dev, vdev); } if (status & VIRTIO_CONFIG_S_DRIVER_OK) { virtio_ccw_start_ioeventfd(dev); } sch->curr_status.scsw.count = ccw.count - sizeof(status); ret = 0; } else { /* Trigger a command reject. */ ret = -ENOSYS; } } break; case CCW_CMD_SET_IND: if (check_len) { if (ccw.count != sizeof(indicators)) { ret = -EINVAL; break; } } else if (ccw.count < sizeof(indicators)) { /* Can't execute command. */ ret = -EINVAL; break; } if (sch->thinint_active) { /* Trigger a command reject. */ ret = -ENOSYS; break; } if (!ccw.cda) { ret = -EFAULT; } else { indicators = address_space_ldq_be(&address_space_memory, ccw.cda, MEMTXATTRS_UNSPECIFIED, NULL); dev->indicators = get_indicator(indicators, sizeof(uint64_t)); sch->curr_status.scsw.count = ccw.count - sizeof(indicators); ret = 0; } break; case CCW_CMD_SET_CONF_IND: if (check_len) { if (ccw.count != sizeof(indicators)) { ret = -EINVAL; break; } } else if (ccw.count < sizeof(indicators)) { /* Can't execute command. */ ret = -EINVAL; break; } if (!ccw.cda) { ret = -EFAULT; } else { indicators = address_space_ldq_be(&address_space_memory, ccw.cda, MEMTXATTRS_UNSPECIFIED, NULL); dev->indicators2 = get_indicator(indicators, sizeof(uint64_t)); sch->curr_status.scsw.count = ccw.count - sizeof(indicators); ret = 0; } break; case CCW_CMD_READ_VQ_CONF: if (check_len) { if (ccw.count != sizeof(vq_config)) { ret = -EINVAL; break; } } else if (ccw.count < sizeof(vq_config)) { /* Can't execute command. */ ret = -EINVAL; break; } if (!ccw.cda) { ret = -EFAULT; } else { vq_config.index = address_space_lduw_be(&address_space_memory, ccw.cda, MEMTXATTRS_UNSPECIFIED, NULL); if (vq_config.index >= VIRTIO_CCW_QUEUE_MAX) { ret = -EINVAL; break; } vq_config.num_max = virtio_queue_get_num(vdev, vq_config.index); address_space_stw_be(&address_space_memory, ccw.cda + sizeof(vq_config.index), vq_config.num_max, MEMTXATTRS_UNSPECIFIED, NULL); sch->curr_status.scsw.count = ccw.count - sizeof(vq_config); ret = 0; } break; case CCW_CMD_SET_IND_ADAPTER: if (check_len) { if (ccw.count != sizeof(*thinint)) { ret = -EINVAL; break; } } else if (ccw.count < sizeof(*thinint)) { /* Can't execute command. */ ret = -EINVAL; break; } len = sizeof(*thinint); hw_len = len; if (!ccw.cda) { ret = -EFAULT; } else if (dev->indicators && !sch->thinint_active) { /* Trigger a command reject. */ ret = -ENOSYS; } else { thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0); if (!thinint) { ret = -EFAULT; } else { uint64_t ind_bit = ldq_be_p(&thinint->ind_bit); len = hw_len; dev->summary_indicator = get_indicator(ldq_be_p(&thinint->summary_indicator), sizeof(uint8_t)); dev->indicators = get_indicator(ldq_be_p(&thinint->device_indicator), ind_bit / 8 + 1); dev->thinint_isc = thinint->isc; dev->routes.adapter.ind_offset = ind_bit; dev->routes.adapter.summary_offset = 7; cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len); ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, dev->thinint_isc, true, false, &dev->routes.adapter.adapter_id); assert(ret == 0); sch->thinint_active = ((dev->indicators != NULL) && (dev->summary_indicator != NULL)); sch->curr_status.scsw.count = ccw.count - len; ret = 0; } } break; case CCW_CMD_SET_VIRTIO_REV: len = sizeof(revinfo); if (ccw.count < len) { ret = -EINVAL; break; } if (!ccw.cda) { ret = -EFAULT; break; } revinfo.revision = address_space_lduw_be(&address_space_memory, ccw.cda, MEMTXATTRS_UNSPECIFIED, NULL); revinfo.length = address_space_lduw_be(&address_space_memory, ccw.cda + sizeof(revinfo.revision), MEMTXATTRS_UNSPECIFIED, NULL); if (ccw.count < len + revinfo.length || (check_len && ccw.count > len + revinfo.length)) { ret = -EINVAL; break; } /* * Once we start to support revisions with additional data, we'll * need to fetch it here. Nothing to do for now, though. */ if (dev->revision >= 0 || revinfo.revision > virtio_ccw_rev_max(dev)) { ret = -ENOSYS; break; } ret = 0; dev->revision = revinfo.revision; break; default: ret = -ENOSYS; break; } return ret; } static void virtio_sch_disable_cb(SubchDev *sch) { VirtioCcwDevice *dev = sch->driver_data; dev->revision = -1; } 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); 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"); } /* Build initial schib. */ css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); 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; dev->revision = -1; if (k->realize) { k->realize(dev, &err); } if (err) { error_propagate(errp, err); css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); goto out_err; } return; out_err: dev->sch = NULL; g_free(sch); } static int virtio_ccw_exit(VirtioCcwDevice *dev) { SubchDev *sch = dev->sch; if (sch) { css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); g_free(sch); } if (dev->indicators) { release_indicator(&dev->routes.adapter, dev->indicators); dev->indicators = NULL; } return 0; } static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp) { DeviceState *qdev = DEVICE(ccw_dev); VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); Error *err = NULL; virtio_net_set_netclient_name(&dev->vdev, qdev->id, object_get_typename(OBJECT(qdev))); qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); object_property_set_bool(OBJECT(vdev), true, "realized", &err); if (err) { error_propagate(errp, err); } } static void virtio_ccw_net_instance_init(Object *obj) { VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET); object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), "bootindex", &error_abort); } static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp) { VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); Error *err = NULL; qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); object_property_set_bool(OBJECT(vdev), true, "realized", &err); if (err) { error_propagate(errp, err); } } static void virtio_ccw_blk_instance_init(Object *obj) { VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BLK); object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread", &error_abort); object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), "bootindex", &error_abort); } static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp) { VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); DeviceState *proxy = DEVICE(ccw_dev); Error *err = NULL; char *bus_name; /* * For command line compatibility, this sets the virtio-serial-device bus * name as before. */ if (proxy->id) { bus_name = g_strdup_printf("%s.0", proxy->id); virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); g_free(bus_name); } qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); object_property_set_bool(OBJECT(vdev), true, "realized", &err); if (err) { error_propagate(errp, err); } } static void virtio_ccw_serial_instance_init(Object *obj) { VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL); } static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp) { VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); Error *err = NULL; qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); object_property_set_bool(OBJECT(vdev), true, "realized", &err); if (err) { error_propagate(errp, err); } } static void virtio_ccw_balloon_instance_init(Object *obj) { VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BALLOON); object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev), "guest-stats", &error_abort); object_property_add_alias(obj, "guest-stats-polling-interval", OBJECT(&dev->vdev), "guest-stats-polling-interval", &error_abort); } static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) { VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); DeviceState *qdev = DEVICE(ccw_dev); Error *err = NULL; char *bus_name; /* * For command line compatibility, this sets the virtio-scsi-device bus * name as before. */ if (qdev->id) { bus_name = g_strdup_printf("%s.0", qdev->id); virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); g_free(bus_name); } qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); object_property_set_bool(OBJECT(vdev), true, "realized", &err); if (err) { error_propagate(errp, err); } } static void virtio_ccw_scsi_instance_init(Object *obj) { VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SCSI); object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread", &error_abort); } #ifdef CONFIG_VHOST_SCSI static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) { VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); Error *err = NULL; qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); object_property_set_bool(OBJECT(vdev), true, "realized", &err); if (err) { error_propagate(errp, err); } } static void vhost_ccw_scsi_instance_init(Object *obj) { VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), TYPE_VHOST_SCSI); } #endif static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp) { VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); Error *err = NULL; qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); object_property_set_bool(OBJECT(vdev), true, "realized", &err); if (err) { error_propagate(errp, err); return; } object_property_set_link(OBJECT(dev), OBJECT(dev->vdev.conf.rng), "rng", NULL); } /* DeviceState to VirtioCcwDevice. Note: used on datapath, * be careful and test performance if you change this. */ static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) { return container_of(d, VirtioCcwDevice, parent_obj); } static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc, uint8_t to_be_set) { uint8_t ind_old, ind_new; hwaddr len = 1; uint8_t *ind_addr; ind_addr = cpu_physical_memory_map(ind_loc, &len, 1); if (!ind_addr) { error_report("%s(%x.%x.%04x): unable to access indicator", __func__, sch->cssid, sch->ssid, sch->schid); return -1; } do { ind_old = *ind_addr; ind_new = ind_old | to_be_set; } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old); trace_virtio_ccw_set_ind(ind_loc, ind_old, ind_new); cpu_physical_memory_unmap(ind_addr, len, 1, len); return ind_old; } static void virtio_ccw_notify(DeviceState *d, uint16_t vector) { VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); SubchDev *sch = dev->sch; uint64_t indicators; /* queue indicators + secondary indicators */ if (vector >= VIRTIO_CCW_QUEUE_MAX + 64) { return; } if (vector < VIRTIO_CCW_QUEUE_MAX) { if (!dev->indicators) { return; } if (sch->thinint_active) { /* * In the adapter interrupt case, indicators points to a * memory area that may be (way) larger than 64 bit and * ind_bit indicates the start of the indicators in a big * endian notation. */ uint64_t ind_bit = dev->routes.adapter.ind_offset; virtio_set_ind_atomic(sch, dev->indicators->addr + (ind_bit + vector) / 8, 0x80 >> ((ind_bit + vector) % 8)); if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr, 0x01)) { css_adapter_interrupt(dev->thinint_isc); } } else { indicators = address_space_ldq(&address_space_memory, dev->indicators->addr, MEMTXATTRS_UNSPECIFIED, NULL); indicators |= 1ULL << vector; address_space_stq(&address_space_memory, dev->indicators->addr, indicators, MEMTXATTRS_UNSPECIFIED, NULL); css_conditional_io_interrupt(sch); } } else { if (!dev->indicators2) { return; } vector = 0; indicators = address_space_ldq(&address_space_memory, dev->indicators2->addr, MEMTXATTRS_UNSPECIFIED, NULL); indicators |= 1ULL << vector; address_space_stq(&address_space_memory, dev->indicators2->addr, indicators, MEMTXATTRS_UNSPECIFIED, NULL); css_conditional_io_interrupt(sch); } } static void virtio_ccw_reset(DeviceState *d) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); virtio_ccw_reset_virtio(dev, vdev); css_reset_sch(dev->sch); } static void virtio_ccw_vmstate_change(DeviceState *d, bool running) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); if (running) { virtio_ccw_start_ioeventfd(dev); } else { virtio_ccw_stop_ioeventfd(dev); } } static bool virtio_ccw_query_guest_notifiers(DeviceState *d) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA); } static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); /* Stop using the generic ioeventfd, we are doing eventfd handling * ourselves below */ dev->ioeventfd_disabled = assign; if (assign) { virtio_ccw_stop_ioeventfd(dev); } return virtio_ccw_set_guest2host_notifier(dev, n, assign, false); } static int virtio_ccw_get_mappings(VirtioCcwDevice *dev) { int r; if (!dev->sch->thinint_active) { return -EINVAL; } r = map_indicator(&dev->routes.adapter, dev->summary_indicator); if (r) { return r; } r = map_indicator(&dev->routes.adapter, dev->indicators); if (r) { return r; } dev->routes.adapter.summary_addr = dev->summary_indicator->map; dev->routes.adapter.ind_addr = dev->indicators->map; return 0; } static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs) { int i; VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); int ret; S390FLICState *fs = s390_get_flic(); S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); ret = virtio_ccw_get_mappings(dev); if (ret) { return ret; } for (i = 0; i < nvqs; i++) { if (!virtio_queue_get_num(vdev, i)) { break; } } dev->routes.num_routes = i; return fsc->add_adapter_routes(fs, &dev->routes); } static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs) { S390FLICState *fs = s390_get_flic(); S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); fsc->release_adapter_routes(fs, &dev->routes); } static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n) { VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); VirtQueue *vq = virtio_get_queue(vdev, n); EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL, dev->routes.gsi[n]); } static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n) { VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); VirtQueue *vq = virtio_get_queue(vdev, n); EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); int ret; ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier, dev->routes.gsi[n]); assert(ret == 0); } static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, bool assign, bool with_irqfd) { VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); VirtQueue *vq = virtio_get_queue(vdev, n); EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); if (assign) { int r = event_notifier_init(notifier, 0); if (r < 0) { return r; } virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); if (with_irqfd) { r = virtio_ccw_add_irqfd(dev, n); if (r) { virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); return r; } } /* * We do not support individual masking for channel devices, so we * need to manually trigger any guest masking callbacks here. */ if (k->guest_notifier_mask) { k->guest_notifier_mask(vdev, n, false); } /* get lost events and re-inject */ if (k->guest_notifier_pending && k->guest_notifier_pending(vdev, n)) { event_notifier_set(notifier); } } else { if (k->guest_notifier_mask) { k->guest_notifier_mask(vdev, n, true); } if (with_irqfd) { virtio_ccw_remove_irqfd(dev, n); } virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); event_notifier_cleanup(notifier); } return 0; } static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, bool assigned) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); bool with_irqfd = dev->sch->thinint_active && kvm_irqfds_enabled(); int r, n; if (with_irqfd && assigned) { /* irq routes need to be set up before assigning irqfds */ r = virtio_ccw_setup_irqroutes(dev, nvqs); if (r < 0) { goto irqroute_error; } } for (n = 0; n < nvqs; n++) { if (!virtio_queue_get_num(vdev, n)) { break; } r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd); if (r < 0) { goto assign_error; } } if (with_irqfd && !assigned) { /* release irq routes after irqfds have been released */ virtio_ccw_release_irqroutes(dev, nvqs); } return 0; assign_error: while (--n >= 0) { virtio_ccw_set_guest_notifier(dev, n, !assigned, false); } irqroute_error: if (with_irqfd && assigned) { virtio_ccw_release_irqroutes(dev, nvqs); } return r; } static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); qemu_put_be16(f, virtio_queue_vector(vdev, n)); } static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); uint16_t vector; qemu_get_be16s(f, &vector); virtio_queue_set_vector(vdev, n , vector); return 0; } static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); SubchDev *s = dev->sch; VirtIODevice *vdev = virtio_ccw_get_vdev(s); subch_device_save(s, f); if (dev->indicators != NULL) { qemu_put_be32(f, dev->indicators->len); qemu_put_be64(f, dev->indicators->addr); } else { qemu_put_be32(f, 0); qemu_put_be64(f, 0UL); } if (dev->indicators2 != NULL) { qemu_put_be32(f, dev->indicators2->len); qemu_put_be64(f, dev->indicators2->addr); } else { qemu_put_be32(f, 0); qemu_put_be64(f, 0UL); } if (dev->summary_indicator != NULL) { qemu_put_be32(f, dev->summary_indicator->len); qemu_put_be64(f, dev->summary_indicator->addr); } else { qemu_put_be32(f, 0); qemu_put_be64(f, 0UL); } qemu_put_be16(f, vdev->config_vector); qemu_put_be64(f, dev->routes.adapter.ind_offset); qemu_put_byte(f, dev->thinint_isc); qemu_put_be32(f, dev->revision); } static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); SubchDev *s = dev->sch; VirtIODevice *vdev = virtio_ccw_get_vdev(s); int len; s->driver_data = dev; subch_device_load(s, f); len = qemu_get_be32(f); if (len != 0) { dev->indicators = get_indicator(qemu_get_be64(f), len); } else { qemu_get_be64(f); dev->indicators = NULL; } len = qemu_get_be32(f); if (len != 0) { dev->indicators2 = get_indicator(qemu_get_be64(f), len); } else { qemu_get_be64(f); dev->indicators2 = NULL; } len = qemu_get_be32(f); if (len != 0) { dev->summary_indicator = get_indicator(qemu_get_be64(f), len); } else { qemu_get_be64(f); dev->summary_indicator = NULL; } qemu_get_be16s(f, &vdev->config_vector); dev->routes.adapter.ind_offset = qemu_get_be64(f); dev->thinint_isc = qemu_get_byte(f); dev->revision = qemu_get_be32(f); if (s->thinint_active) { return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, dev->thinint_isc, true, false, &dev->routes.adapter.adapter_id); } return 0; } /* This is called by virtio-bus just after the device is plugged. */ 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; int n = virtio_get_num_queues(vdev); if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) { error_setg(errp, "The number of virtqueues %d " "exceeds ccw limit %d", n, VIRTIO_CCW_QUEUE_MAX); return; } if (!kvm_eventfds_enabled()) { dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; } sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus); if (dev->max_rev >= 1) { virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1); } css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, d->hotplugged, 1); } static void virtio_ccw_post_plugged(DeviceState *d, Error **errp) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); if (!virtio_host_has_feature(vdev, VIRTIO_F_VERSION_1)) { /* A backend didn't support modern virtio. */ dev->max_rev = 0; } } static void virtio_ccw_device_unplugged(DeviceState *d) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); virtio_ccw_stop_ioeventfd(dev); } /**************** Virtio-ccw Bus Device Descriptions *******************/ static Property virtio_ccw_net_properties[] = { DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, VIRTIO_CCW_MAX_REV), DEFINE_PROP_END_OF_LIST(), }; static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); k->realize = virtio_ccw_net_realize; k->exit = virtio_ccw_exit; dc->reset = virtio_ccw_reset; dc->props = virtio_ccw_net_properties; set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); } static const TypeInfo virtio_ccw_net = { .name = TYPE_VIRTIO_NET_CCW, .parent = TYPE_VIRTIO_CCW_DEVICE, .instance_size = sizeof(VirtIONetCcw), .instance_init = virtio_ccw_net_instance_init, .class_init = virtio_ccw_net_class_init, }; static Property virtio_ccw_blk_properties[] = { DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, VIRTIO_CCW_MAX_REV), DEFINE_PROP_END_OF_LIST(), }; static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); k->realize = virtio_ccw_blk_realize; k->exit = virtio_ccw_exit; dc->reset = virtio_ccw_reset; dc->props = virtio_ccw_blk_properties; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); } static const TypeInfo virtio_ccw_blk = { .name = TYPE_VIRTIO_BLK_CCW, .parent = TYPE_VIRTIO_CCW_DEVICE, .instance_size = sizeof(VirtIOBlkCcw), .instance_init = virtio_ccw_blk_instance_init, .class_init = virtio_ccw_blk_class_init, }; static Property virtio_ccw_serial_properties[] = { DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, VIRTIO_CCW_MAX_REV), DEFINE_PROP_END_OF_LIST(), }; static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); k->realize = virtio_ccw_serial_realize; k->exit = virtio_ccw_exit; dc->reset = virtio_ccw_reset; dc->props = virtio_ccw_serial_properties; set_bit(DEVICE_CATEGORY_INPUT, dc->categories); } static const TypeInfo virtio_ccw_serial = { .name = TYPE_VIRTIO_SERIAL_CCW, .parent = TYPE_VIRTIO_CCW_DEVICE, .instance_size = sizeof(VirtioSerialCcw), .instance_init = virtio_ccw_serial_instance_init, .class_init = virtio_ccw_serial_class_init, }; static Property virtio_ccw_balloon_properties[] = { DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, VIRTIO_CCW_MAX_REV), DEFINE_PROP_END_OF_LIST(), }; static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); k->realize = virtio_ccw_balloon_realize; k->exit = virtio_ccw_exit; dc->reset = virtio_ccw_reset; dc->props = virtio_ccw_balloon_properties; set_bit(DEVICE_CATEGORY_MISC, dc->categories); } static const TypeInfo virtio_ccw_balloon = { .name = TYPE_VIRTIO_BALLOON_CCW, .parent = TYPE_VIRTIO_CCW_DEVICE, .instance_size = sizeof(VirtIOBalloonCcw), .instance_init = virtio_ccw_balloon_instance_init, .class_init = virtio_ccw_balloon_class_init, }; static Property virtio_ccw_scsi_properties[] = { DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, VIRTIO_CCW_MAX_REV), DEFINE_PROP_END_OF_LIST(), }; static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); k->realize = virtio_ccw_scsi_realize; k->exit = virtio_ccw_exit; dc->reset = virtio_ccw_reset; dc->props = virtio_ccw_scsi_properties; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); } static const TypeInfo virtio_ccw_scsi = { .name = TYPE_VIRTIO_SCSI_CCW, .parent = TYPE_VIRTIO_CCW_DEVICE, .instance_size = sizeof(VirtIOSCSICcw), .instance_init = virtio_ccw_scsi_instance_init, .class_init = virtio_ccw_scsi_class_init, }; #ifdef CONFIG_VHOST_SCSI static Property vhost_ccw_scsi_properties[] = { DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, VIRTIO_CCW_MAX_REV), DEFINE_PROP_END_OF_LIST(), }; static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); k->realize = vhost_ccw_scsi_realize; k->exit = virtio_ccw_exit; dc->reset = virtio_ccw_reset; dc->props = vhost_ccw_scsi_properties; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); } static const TypeInfo vhost_ccw_scsi = { .name = TYPE_VHOST_SCSI_CCW, .parent = TYPE_VIRTIO_CCW_DEVICE, .instance_size = sizeof(VHostSCSICcw), .instance_init = vhost_ccw_scsi_instance_init, .class_init = vhost_ccw_scsi_class_init, }; #endif static void virtio_ccw_rng_instance_init(Object *obj) { VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG); object_property_add_alias(obj, "rng", OBJECT(&dev->vdev), "rng", &error_abort); } static Property virtio_ccw_rng_properties[] = { DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, VIRTIO_CCW_MAX_REV), DEFINE_PROP_END_OF_LIST(), }; static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); k->realize = virtio_ccw_rng_realize; k->exit = virtio_ccw_exit; dc->reset = virtio_ccw_reset; dc->props = virtio_ccw_rng_properties; set_bit(DEVICE_CATEGORY_MISC, dc->categories); } static const TypeInfo virtio_ccw_rng = { .name = TYPE_VIRTIO_RNG_CCW, .parent = TYPE_VIRTIO_CCW_DEVICE, .instance_size = sizeof(VirtIORNGCcw), .instance_init = virtio_ccw_rng_instance_init, .class_init = virtio_ccw_rng_class_init, }; static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp) { VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev); virtio_ccw_device_realize(_dev, errp); } static int virtio_ccw_busdev_exit(DeviceState *dev) { VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); return _info->exit(_dev); } static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; SubchDev *sch = _dev->sch; 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); dc->realize = virtio_ccw_busdev_realize; dc->exit = virtio_ccw_busdev_exit; dc->bus_type = TYPE_VIRTUAL_CSS_BUS; } static const TypeInfo virtio_ccw_device_info = { .name = TYPE_VIRTIO_CCW_DEVICE, .parent = TYPE_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, VirtioCcwDevice *dev) { DeviceState *qdev = DEVICE(dev); char virtio_bus_name[] = "virtio-bus"; qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS, qdev, virtio_bus_name); } static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) { VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); BusClass *bus_class = BUS_CLASS(klass); bus_class->max_dev = 1; k->notify = virtio_ccw_notify; k->vmstate_change = virtio_ccw_vmstate_change; k->query_guest_notifiers = virtio_ccw_query_guest_notifiers; k->set_host_notifier = virtio_ccw_set_host_notifier; k->set_guest_notifiers = virtio_ccw_set_guest_notifiers; k->save_queue = virtio_ccw_save_queue; k->load_queue = virtio_ccw_load_queue; k->save_config = virtio_ccw_save_config; k->load_config = virtio_ccw_load_config; k->device_plugged = virtio_ccw_device_plugged; k->post_plugged = virtio_ccw_post_plugged; k->device_unplugged = virtio_ccw_device_unplugged; } static const TypeInfo virtio_ccw_bus_info = { .name = TYPE_VIRTIO_CCW_BUS, .parent = TYPE_VIRTIO_BUS, .instance_size = sizeof(VirtioCcwBusState), .class_init = virtio_ccw_bus_class_init, }; #ifdef CONFIG_VIRTFS static Property virtio_ccw_9p_properties[] = { DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, VIRTIO_CCW_MAX_REV), DEFINE_PROP_END_OF_LIST(), }; static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp) { V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev); DeviceState *vdev = DEVICE(&dev->vdev); Error *err = NULL; qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); object_property_set_bool(OBJECT(vdev), true, "realized", &err); if (err) { error_propagate(errp, err); } } static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); k->exit = virtio_ccw_exit; k->realize = virtio_ccw_9p_realize; dc->reset = virtio_ccw_reset; dc->props = virtio_ccw_9p_properties; set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); } static void virtio_ccw_9p_instance_init(Object *obj) { V9fsCCWState *dev = VIRTIO_9P_CCW(obj); virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_9P); } static const TypeInfo virtio_ccw_9p_info = { .name = TYPE_VIRTIO_9P_CCW, .parent = TYPE_VIRTIO_CCW_DEVICE, .instance_size = sizeof(V9fsCCWState), .instance_init = virtio_ccw_9p_instance_init, .class_init = virtio_ccw_9p_class_init, }; #endif 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); type_register_static(&virtio_ccw_net); type_register_static(&virtio_ccw_balloon); type_register_static(&virtio_ccw_scsi); #ifdef CONFIG_VHOST_SCSI 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 } type_init(virtio_ccw_register)