diff options
Diffstat (limited to 'qemu/hw/s390x/virtio-ccw.c')
| -rw-r--r-- | qemu/hw/s390x/virtio-ccw.c | 1928 |
1 files changed, 0 insertions, 1928 deletions
diff --git a/qemu/hw/s390x/virtio-ccw.c b/qemu/hw/s390x/virtio-ccw.c deleted file mode 100644 index d51642db0..000000000 --- a/qemu/hw/s390x/virtio-ccw.c +++ /dev/null @@ -1,1928 +0,0 @@ -/* - * virtio ccw target implementation - * - * Copyright 2012,2015 IBM Corp. - * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> - * Pierre Morel <pmorel@linux.vnet.ibm.com> - * - * 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 "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 "ioinst.h" -#include "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 cssid = 0; - unsigned int ssid = 0; - unsigned int schid; - unsigned int devno; - bool have_devno = false; - bool found = false; - SubchDev *sch; - int num; - 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) { - num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno); - if (num == 3) { - if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) { - error_setg(errp, "Invalid cssid or ssid: cssid %x, ssid %x", - cssid, ssid); - goto out_err; - } - /* Enforce use of virtual cssid. */ - if (cssid != VIRTUAL_CSSID) { - error_setg(errp, "cssid %x not valid for virtio devices", - cssid); - goto out_err; - } - if (css_devno_used(cssid, ssid, devno)) { - error_setg(errp, "Device %x.%x.%04x already exists", - cssid, ssid, devno); - goto out_err; - } - sch->cssid = cssid; - sch->ssid = ssid; - sch->devno = devno; - have_devno = true; - } else { - error_setg(errp, "Malformed devno parameter '%s'", dev->bus_id); - goto out_err; - } - } - - /* Find the next free id. */ - if (have_devno) { - for (schid = 0; schid <= MAX_SCHID; schid++) { - if (!css_find_subch(1, cssid, ssid, schid)) { - sch->schid = schid; - css_subch_assign(cssid, ssid, schid, devno, sch); - found = true; - break; - } - } - if (!found) { - error_setg(errp, "No free subchannel found for %x.%x.%04x", - cssid, ssid, devno); - goto out_err; - } - trace_virtio_ccw_new_device(cssid, ssid, schid, devno, - "user-configured"); - } else { - cssid = VIRTUAL_CSSID; - 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(cssid, ssid, schid, 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); - 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 nubmer 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_STRING("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_STRING("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_STRING("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_STRING("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_STRING("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_STRING("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_STRING("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_STRING("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) |