| /* |
| * virtio ccw target implementation |
| * |
| * Copyright 2012,2014 IBM Corp. |
| * Author(s): Cornelia Huck <cornelia.huck@de.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 "hw/hw.h" |
| #include "block/block.h" |
| #include "sysemu/blockdev.h" |
| #include "sysemu/sysemu.h" |
| #include "net/net.h" |
| #include "monitor/monitor.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 "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 QTAILQ_HEAD(, IndAddr) indicator_addresses = |
| QTAILQ_HEAD_INITIALIZER(indicator_addresses); |
| |
| static IndAddr *get_indicator(hwaddr ind_addr, int len) |
| { |
| IndAddr *indicator; |
| |
| QTAILQ_FOREACH(indicator, &indicator_addresses, sibling) { |
| if (indicator->addr == ind_addr) { |
| indicator->refcnt++; |
| return indicator; |
| } |
| } |
| indicator = g_new0(IndAddr, 1); |
| indicator->addr = ind_addr; |
| indicator->len = len; |
| indicator->refcnt = 1; |
| QTAILQ_INSERT_TAIL(&indicator_addresses, indicator, sibling); |
| return indicator; |
| } |
| |
| static int s390_io_adapter_map(AdapterInfo *adapter, uint64_t map_addr, |
| bool do_map) |
| { |
| S390FLICState *fs = s390_get_flic(); |
| S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); |
| |
| return fsc->io_adapter_map(fs, adapter->adapter_id, map_addr, do_map); |
| } |
| |
| static void release_indicator(AdapterInfo *adapter, IndAddr *indicator) |
| { |
| assert(indicator->refcnt > 0); |
| indicator->refcnt--; |
| if (indicator->refcnt > 0) { |
| return; |
| } |
| QTAILQ_REMOVE(&indicator_addresses, indicator, sibling); |
| if (indicator->map) { |
| s390_io_adapter_map(adapter, indicator->map, false); |
| } |
| g_free(indicator); |
| } |
| |
| static int map_indicator(AdapterInfo *adapter, IndAddr *indicator) |
| { |
| int ret; |
| |
| if (indicator->map) { |
| return 0; /* already mapped is not an error */ |
| } |
| indicator->map = indicator->addr; |
| ret = s390_io_adapter_map(adapter, indicator->map, true); |
| if ((ret != 0) && (ret != -ENOSYS)) { |
| goto out_err; |
| } |
| return 0; |
| |
| out_err: |
| indicator->map = 0; |
| return ret; |
| } |
| |
| 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_PCI_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_PCI_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 */ |
| bus->allow_hotplug = 1; |
| |
| return cbus; |
| } |
| |
| /* Communication blocks used by several channel commands. */ |
| typedef struct VqInfoBlock { |
| uint64_t queue; |
| uint32_t align; |
| uint16_t index; |
| uint16_t num; |
| } 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; |
| |
| /* Specify where the virtqueues for the subchannel are in guest memory. */ |
| static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align, |
| uint16_t index, uint16_t num) |
| { |
| VirtIODevice *vdev = virtio_ccw_get_vdev(sch); |
| |
| if (index > VIRTIO_PCI_QUEUE_MAX) { |
| return -EINVAL; |
| } |
| |
| /* Current code in virtio.c relies on 4K alignment. */ |
| if (addr && (align != 4096)) { |
| return -EINVAL; |
| } |
| |
| if (!vdev) { |
| return -EINVAL; |
| } |
| |
| virtio_queue_set_addr(vdev, index, addr); |
| if (!addr) { |
| virtio_queue_set_vector(vdev, index, 0); |
| } else { |
| /* Fail if we don't have a big enough queue. */ |
| /* TODO: Add interface to handle vring.num changing */ |
| if (virtio_queue_get_num(vdev, index) > num) { |
| return -EINVAL; |
| } |
| virtio_queue_set_vector(vdev, index, index); |
| } |
| /* tell notify handler in case of config change */ |
| vdev->config_vector = VIRTIO_PCI_QUEUE_MAX; |
| return 0; |
| } |
| |
| static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) |
| { |
| int ret; |
| VqInfoBlock info; |
| 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: |
| if (check_len) { |
| if (ccw.count != sizeof(info)) { |
| ret = -EINVAL; |
| break; |
| } |
| } else if (ccw.count < sizeof(info)) { |
| /* Can't execute command. */ |
| ret = -EINVAL; |
| break; |
| } |
| if (!ccw.cda) { |
| ret = -EFAULT; |
| } else { |
| info.queue = ldq_phys(&address_space_memory, ccw.cda); |
| info.align = ldl_phys(&address_space_memory, |
| ccw.cda + sizeof(info.queue)); |
| info.index = lduw_phys(&address_space_memory, |
| ccw.cda + sizeof(info.queue) |
| + sizeof(info.align)); |
| info.num = lduw_phys(&address_space_memory, |
| ccw.cda + sizeof(info.queue) |
| + sizeof(info.align) |
| + sizeof(info.index)); |
| ret = virtio_ccw_set_vqs(sch, info.queue, info.align, info.index, |
| info.num); |
| sch->curr_status.scsw.count = 0; |
| } |
| break; |
| case CCW_CMD_VDEV_RESET: |
| virtio_ccw_stop_ioeventfd(dev); |
| virtio_reset(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 = ldub_phys(&address_space_memory, |
| ccw.cda + sizeof(features.features)); |
| if (features.index < ARRAY_SIZE(dev->host_features)) { |
| features.features = dev->host_features[features.index]; |
| } else { |
| /* Return zeroes if the guest supports more feature bits. */ |
| features.features = 0; |
| } |
| stl_le_phys(&address_space_memory, ccw.cda, features.features); |
| 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 = ldub_phys(&address_space_memory, |
| ccw.cda + sizeof(features.features)); |
| features.features = ldl_le_phys(&address_space_memory, ccw.cda); |
| if (features.index < ARRAY_SIZE(dev->host_features)) { |
| virtio_bus_set_vdev_features(&dev->bus, features.features); |
| vdev->guest_features = features.features; |
| } 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 = ldub_phys(&address_space_memory, ccw.cda); |
| if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
| virtio_ccw_stop_ioeventfd(dev); |
| } |
| virtio_set_status(vdev, status); |
| if (vdev->status == 0) { |
| virtio_reset(vdev); |
| } |
| if (status & VIRTIO_CONFIG_S_DRIVER_OK) { |
| virtio_ccw_start_ioeventfd(dev); |
| } |
| sch->curr_status.scsw.count = ccw.count - sizeof(status); |
| ret = 0; |
| } |
| 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 = ldq_phys(&address_space_memory, ccw.cda); |
| 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 = ldq_phys(&address_space_memory, ccw.cda); |
| 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 = lduw_phys(&address_space_memory, ccw.cda); |
| vq_config.num_max = virtio_queue_get_num(vdev, |
| vq_config.index); |
| stw_phys(&address_space_memory, |
| ccw.cda + sizeof(vq_config.index), vq_config.num_max); |
| 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 { |
| len = hw_len; |
| dev->summary_indicator = |
| get_indicator(thinint->summary_indicator, sizeof(uint8_t)); |
| dev->indicators = get_indicator(thinint->device_indicator, |
| thinint->ind_bit / 8 + 1); |
| dev->thinint_isc = thinint->isc; |
| dev->routes.adapter.ind_offset = thinint->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; |
| default: |
| ret = -ENOSYS; |
| break; |
| } |
| return ret; |
| } |
| |
| static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev) |
| { |
| unsigned int cssid = 0; |
| unsigned int ssid = 0; |
| unsigned int schid; |
| unsigned int devno; |
| bool have_devno = false; |
| bool found = false; |
| SubchDev *sch; |
| int ret; |
| int num; |
| DeviceState *parent = DEVICE(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)) { |
| ret = -EINVAL; |
| error_report("Invalid cssid or ssid: cssid %x, ssid %x", |
| cssid, ssid); |
| goto out_err; |
| } |
| /* Enforce use of virtual cssid. */ |
| if (cssid != VIRTUAL_CSSID) { |
| ret = -EINVAL; |
| error_report("cssid %x not valid for virtio devices", cssid); |
| goto out_err; |
| } |
| if (css_devno_used(cssid, ssid, devno)) { |
| ret = -EEXIST; |
| error_report("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 { |
| ret = -EINVAL; |
| error_report("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) { |
| ret = -ENODEV; |
| error_report("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) { |
| ret = -ENODEV; |
| error_report("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) { |
| ret = -ENODEV; |
| error_report("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; |
| |
| /* Build senseid data. */ |
| memset(&sch->id, 0, sizeof(SenseId)); |
| sch->id.reserved = 0xff; |
| sch->id.cu_type = VIRTIO_CCW_CU_TYPE; |
| sch->id.cu_model = vdev->device_id; |
| |
| /* Only the first 32 feature bits are used. */ |
| dev->host_features[0] = virtio_bus_get_vdev_features(&dev->bus, |
| dev->host_features[0]); |
| |
| dev->host_features[0] |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; |
| dev->host_features[0] |= 0x1 << VIRTIO_F_BAD_FEATURE; |
| |
| css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, |
| parent->hotplugged, 1); |
| return 0; |
| |
| out_err: |
| dev->sch = NULL; |
| g_free(sch); |
| return ret; |
| } |
| |
| 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 int virtio_ccw_net_init(VirtioCcwDevice *ccw_dev) |
| { |
| DeviceState *qdev = DEVICE(ccw_dev); |
| VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); |
| DeviceState *vdev = DEVICE(&dev->vdev); |
| |
| virtio_net_set_config_size(&dev->vdev, ccw_dev->host_features[0]); |
| virtio_net_set_netclient_name(&dev->vdev, qdev->id, |
| object_get_typename(OBJECT(qdev))); |
| qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| if (qdev_init(vdev) < 0) { |
| return -1; |
| } |
| |
| return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); |
| } |
| |
| static void virtio_ccw_net_instance_init(Object *obj) |
| { |
| VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); |
| object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET); |
| object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| } |
| |
| static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev) |
| { |
| VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); |
| DeviceState *vdev = DEVICE(&dev->vdev); |
| virtio_blk_set_conf(vdev, &(dev->blk)); |
| qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| if (qdev_init(vdev) < 0) { |
| return -1; |
| } |
| |
| return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); |
| } |
| |
| static void virtio_ccw_blk_instance_init(Object *obj) |
| { |
| VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); |
| object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BLK); |
| object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| } |
| |
| static int virtio_ccw_serial_init(VirtioCcwDevice *ccw_dev) |
| { |
| VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); |
| DeviceState *vdev = DEVICE(&dev->vdev); |
| DeviceState *proxy = DEVICE(ccw_dev); |
| 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)); |
| if (qdev_init(vdev) < 0) { |
| return -1; |
| } |
| |
| return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); |
| } |
| |
| |
| static void virtio_ccw_serial_instance_init(Object *obj) |
| { |
| VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); |
| object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL); |
| object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| } |
| |
| static int virtio_ccw_balloon_init(VirtioCcwDevice *ccw_dev) |
| { |
| VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); |
| DeviceState *vdev = DEVICE(&dev->vdev); |
| |
| qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| if (qdev_init(vdev) < 0) { |
| return -1; |
| } |
| |
| return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); |
| } |
| |
| static void balloon_ccw_stats_get_all(Object *obj, struct Visitor *v, |
| void *opaque, const char *name, |
| Error **errp) |
| { |
| VirtIOBalloonCcw *dev = opaque; |
| object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp); |
| } |
| |
| static void balloon_ccw_stats_get_poll_interval(Object *obj, struct Visitor *v, |
| void *opaque, const char *name, |
| Error **errp) |
| { |
| VirtIOBalloonCcw *dev = opaque; |
| object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval", |
| errp); |
| } |
| |
| static void balloon_ccw_stats_set_poll_interval(Object *obj, struct Visitor *v, |
| void *opaque, const char *name, |
| Error **errp) |
| { |
| VirtIOBalloonCcw *dev = opaque; |
| object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval", |
| errp); |
| } |
| |
| static void virtio_ccw_balloon_instance_init(Object *obj) |
| { |
| VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); |
| object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BALLOON); |
| object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| |
| object_property_add(obj, "guest-stats", "guest statistics", |
| balloon_ccw_stats_get_all, NULL, NULL, dev, NULL); |
| |
| object_property_add(obj, "guest-stats-polling-interval", "int", |
| balloon_ccw_stats_get_poll_interval, |
| balloon_ccw_stats_set_poll_interval, |
| NULL, dev, NULL); |
| } |
| |
| static int virtio_ccw_scsi_init(VirtioCcwDevice *ccw_dev) |
| { |
| VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); |
| DeviceState *vdev = DEVICE(&dev->vdev); |
| DeviceState *qdev = DEVICE(ccw_dev); |
| 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)); |
| if (qdev_init(vdev) < 0) { |
| return -1; |
| } |
| |
| return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); |
| } |
| |
| static void virtio_ccw_scsi_instance_init(Object *obj) |
| { |
| VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); |
| object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SCSI); |
| object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| } |
| |
| #ifdef CONFIG_VHOST_SCSI |
| static int vhost_ccw_scsi_init(VirtioCcwDevice *ccw_dev) |
| { |
| VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); |
| DeviceState *vdev = DEVICE(&dev->vdev); |
| |
| qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| if (qdev_init(vdev) < 0) { |
| return -1; |
| } |
| |
| return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); |
| } |
| |
| static void vhost_ccw_scsi_instance_init(Object *obj) |
| { |
| VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); |
| object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VHOST_SCSI); |
| object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| } |
| #endif |
| |
| static int virtio_ccw_rng_init(VirtioCcwDevice *ccw_dev) |
| { |
| VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); |
| DeviceState *vdev = DEVICE(&dev->vdev); |
| |
| qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| if (qdev_init(vdev) < 0) { |
| return -1; |
| } |
| |
| object_property_set_link(OBJECT(dev), |
| OBJECT(dev->vdev.conf.rng), "rng", |
| NULL); |
| |
| return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); |
| } |
| |
| /* 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; |
| |
| if (vector >= 128) { |
| return; |
| } |
| |
| if (vector < VIRTIO_PCI_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 = ldq_phys(&address_space_memory, dev->indicators->addr); |
| indicators |= 1ULL << vector; |
| stq_phys(&address_space_memory, dev->indicators->addr, indicators); |
| css_conditional_io_interrupt(sch); |
| } |
| } else { |
| if (!dev->indicators2) { |
| return; |
| } |
| vector = 0; |
| indicators = ldq_phys(&address_space_memory, dev->indicators2->addr); |
| indicators |= 1ULL << vector; |
| stq_phys(&address_space_memory, dev->indicators2->addr, indicators); |
| css_conditional_io_interrupt(sch); |
| } |
| } |
| |
| static unsigned virtio_ccw_get_features(DeviceState *d) |
| { |
| VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
| |
| /* Only the first 32 feature bits are used. */ |
| return dev->host_features[0]; |
| } |
| |
| static void virtio_ccw_reset(DeviceState *d) |
| { |
| VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
| VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); |
| |
| virtio_ccw_stop_ioeventfd(dev); |
| virtio_reset(vdev); |
| css_reset_sch(dev->sch); |
| 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; |
| } |
| } |
| |
| 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(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(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; |
| } |
| |
| /**************** Virtio-ccw Bus Device Descriptions *******************/ |
| |
| static Property virtio_ccw_net_properties[] = { |
| DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), |
| DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]), |
| DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetCcw, vdev.net_conf), |
| DEFINE_NIC_PROPERTIES(VirtIONetCcw, vdev.nic_conf), |
| DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, |
| VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), |
| 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->init = virtio_ccw_net_init; |
| k->exit = virtio_ccw_exit; |
| dc->reset = virtio_ccw_reset; |
| dc->props = virtio_ccw_net_properties; |
| } |
| |
| 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_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]), |
| DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkCcw, blk), |
| DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, |
| VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), |
| #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE |
| DEFINE_PROP_BIT("x-data-plane", VirtIOBlkCcw, blk.data_plane, 0, false), |
| #endif |
| 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->init = virtio_ccw_blk_init; |
| k->exit = virtio_ccw_exit; |
| dc->reset = virtio_ccw_reset; |
| dc->props = virtio_ccw_blk_properties; |
| } |
| |
| 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_VIRTIO_SERIAL_PROPERTIES(VirtioSerialCcw, vdev.serial), |
| DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), |
| DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, |
| VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), |
| 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->init = virtio_ccw_serial_init; |
| k->exit = virtio_ccw_exit; |
| dc->reset = virtio_ccw_reset; |
| dc->props = virtio_ccw_serial_properties; |
| } |
| |
| 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_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), |
| DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, |
| VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), |
| 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->init = virtio_ccw_balloon_init; |
| k->exit = virtio_ccw_exit; |
| dc->reset = virtio_ccw_reset; |
| dc->props = virtio_ccw_balloon_properties; |
| } |
| |
| 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_VIRTIO_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), |
| DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]), |
| DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, |
| VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), |
| 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->init = virtio_ccw_scsi_init; |
| k->exit = virtio_ccw_exit; |
| dc->reset = virtio_ccw_reset; |
| dc->props = virtio_ccw_scsi_properties; |
| } |
| |
| 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_VHOST_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), |
| DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), |
| 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->init = vhost_ccw_scsi_init; |
| k->exit = virtio_ccw_exit; |
| dc->reset = virtio_ccw_reset; |
| dc->props = vhost_ccw_scsi_properties; |
| } |
| |
| static const TypeInfo vhost_ccw_scsi = { |
| .name = TYPE_VHOST_SCSI_CCW, |
| .parent = TYPE_VIRTIO_CCW_DEVICE, |
| .instance_size = sizeof(VirtIOSCSICcw), |
| .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); |
| object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG); |
| object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| object_property_add_link(obj, "rng", TYPE_RNG_BACKEND, |
| (Object **)&dev->vdev.conf.rng, |
| qdev_prop_allow_set_link_before_realize, |
| OBJ_PROP_LINK_UNREF_ON_RELEASE, NULL); |
| } |
| |
| static Property virtio_ccw_rng_properties[] = { |
| DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), |
| DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), |
| DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGCcw, vdev.conf), |
| DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, |
| VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), |
| 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->init = virtio_ccw_rng_init; |
| k->exit = virtio_ccw_exit; |
| dc->reset = virtio_ccw_reset; |
| dc->props = virtio_ccw_rng_properties; |
| } |
| |
| 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 int virtio_ccw_busdev_init(DeviceState *dev) |
| { |
| VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
| VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); |
| |
| virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev); |
| |
| return _info->init(_dev); |
| } |
| |
| 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 int virtio_ccw_busdev_unplug(DeviceState *dev) |
| { |
| 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)); |
| return 0; |
| } |
| |
| static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| dc->init = virtio_ccw_busdev_init; |
| dc->exit = virtio_ccw_busdev_exit; |
| dc->unplug = virtio_ccw_busdev_unplug; |
| 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); |
| |
| k->init = virtual_css_bridge_init; |
| } |
| |
| 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, |
| }; |
| |
| /* virtio-ccw-bus */ |
| |
| static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, |
| VirtioCcwDevice *dev) |
| { |
| DeviceState *qdev = DEVICE(dev); |
| BusState *qbus; |
| char virtio_bus_name[] = "virtio-bus"; |
| |
| qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS, |
| qdev, virtio_bus_name); |
| qbus = BUS(bus); |
| qbus->allow_hotplug = 1; |
| } |
| |
| 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->get_features = virtio_ccw_get_features; |
| 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; |
| } |
| |
| 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, |
| }; |
| |
| 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); |
| } |
| |
| type_init(virtio_ccw_register) |
