diff options
Diffstat (limited to 'hw/s390x/virtio-ccw.c')
| -rw-r--r-- | hw/s390x/virtio-ccw.c | 961 |
1 files changed, 961 insertions, 0 deletions
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c new file mode 100644 index 0000000..d92e427 --- /dev/null +++ b/hw/s390x/virtio-ccw.c @@ -0,0 +1,961 @@ +/* + * virtio ccw target implementation + * + * Copyright 2012 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.h" +#include "hw/virtio-serial.h" +#include "hw/virtio-net.h" +#include "hw/sysbus.h" +#include "qemu/bitops.h" +#include "hw/virtio-bus.h" + +#include "ioinst.h" +#include "css.h" +#include "virtio-ccw.h" +#include "trace.h" + +static int virtual_css_bus_reset(BusState *qbus) +{ + /* This should actually be modelled via the generic css */ + css_reset(); + + /* we dont traverse ourself, return 0 */ + return 0; +} + + +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, +}; + +static const VirtIOBindings virtio_ccw_bindings; + +VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch) +{ + VirtIODevice *vdev = NULL; + + if (sch->driver_data) { + vdev = ((VirtioCcwDevice *)sch->driver_data)->vdev; + } + return vdev; +} + +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; + +/* 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) +{ + VirtioCcwDevice *dev = sch->driver_data; + + if (index > VIRTIO_PCI_QUEUE_MAX) { + return -EINVAL; + } + + /* Current code in virtio.c relies on 4K alignment. */ + if (addr && (align != 4096)) { + return -EINVAL; + } + + if (!dev) { + return -EINVAL; + } + + virtio_queue_set_addr(dev->vdev, index, addr); + if (!addr) { + virtio_queue_set_vector(dev->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(dev->vdev, index) > num) { + return -EINVAL; + } + virtio_queue_set_vector(dev->vdev, index, index); + } + /* tell notify handler in case of config change */ + dev->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; + bool check_len; + int len; + hwaddr hw_len; + + 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(ccw.cda); + info.align = ldl_phys(ccw.cda + sizeof(info.queue)); + info.index = lduw_phys(ccw.cda + sizeof(info.queue) + + sizeof(info.align)); + info.num = lduw_phys(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_reset(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 = ldub_phys(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(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(ccw.cda + sizeof(features.features)); + features.features = ldl_le_phys(ccw.cda); + if (features.index < ARRAY_SIZE(dev->host_features)) { + if (dev->vdev->set_features) { + dev->vdev->set_features(dev->vdev, features.features); + } + dev->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 > dev->vdev->config_len) { + ret = -EINVAL; + break; + } + } + len = MIN(ccw.count, dev->vdev->config_len); + if (!ccw.cda) { + ret = -EFAULT; + } else { + dev->vdev->get_config(dev->vdev, dev->vdev->config); + /* XXX config space endianness */ + cpu_physical_memory_write(ccw.cda, dev->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 > dev->vdev->config_len) { + ret = -EINVAL; + break; + } + } + len = MIN(ccw.count, dev->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(dev->vdev->config, config, len); + cpu_physical_memory_unmap(config, hw_len, 0, hw_len); + if (dev->vdev->set_config) { + dev->vdev->set_config(dev->vdev, dev->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(ccw.cda); + virtio_set_status(dev->vdev, status); + if (dev->vdev->status == 0) { + virtio_reset(dev->vdev); + } + 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; + } + indicators = ldq_phys(ccw.cda); + if (!indicators) { + ret = -EFAULT; + } else { + dev->indicators = indicators; + 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; + } + indicators = ldq_phys(ccw.cda); + if (!indicators) { + ret = -EFAULT; + } else { + dev->indicators2 = indicators; + 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(ccw.cda); + vq_config.num_max = virtio_queue_get_num(dev->vdev, + vq_config.index); + stw_phys(ccw.cda + sizeof(vq_config.index), vq_config.num_max); + sch->curr_status.scsw.count = ccw.count - sizeof(vq_config); + 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->vdev = vdev; + dev->indicators = 0; + + /* Initialize subchannel structure. */ + sch->channel_prog = 0x0; + sch->last_cmd_valid = false; + sch->orb = NULL; + /* + * 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 = dev->vdev->device_id; + + virtio_bind_device(vdev, &virtio_ccw_bindings, DEVICE(dev)); + /* Only the first 32 feature bits are used. */ + dev->host_features[0] = vdev->get_features(vdev, 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); + } + dev->indicators = 0; + return 0; +} + +static int virtio_ccw_net_init(VirtioCcwDevice *dev) +{ + VirtIODevice *vdev; + + vdev = virtio_net_init((DeviceState *)dev, &dev->nic, &dev->net, + dev->host_features[0]); + if (!vdev) { + return -1; + } + + return virtio_ccw_device_init(dev, vdev); +} + +static int virtio_ccw_net_exit(VirtioCcwDevice *dev) +{ + virtio_net_exit(dev->vdev); + return virtio_ccw_exit(dev); +} + +static int virtio_ccw_blk_init(VirtioCcwDevice *dev) +{ + VirtIODevice *vdev; + + vdev = virtio_blk_init((DeviceState *)dev, &dev->blk); + if (!vdev) { + return -1; + } + + return virtio_ccw_device_init(dev, vdev); +} + +static int virtio_ccw_blk_exit(VirtioCcwDevice *dev) +{ + virtio_blk_exit(dev->vdev); + blockdev_mark_auto_del(dev->blk.conf.bs); + return virtio_ccw_exit(dev); +} + +static int virtio_ccw_serial_init(VirtioCcwDevice *dev) +{ + VirtIODevice *vdev; + + vdev = virtio_serial_init((DeviceState *)dev, &dev->serial); + if (!vdev) { + return -1; + } + + return virtio_ccw_device_init(dev, vdev); +} + +static int virtio_ccw_serial_exit(VirtioCcwDevice *dev) +{ + virtio_serial_exit(dev->vdev); + return virtio_ccw_exit(dev); +} + +static int virtio_ccw_balloon_init(VirtioCcwDevice *dev) +{ + VirtIODevice *vdev; + + vdev = virtio_balloon_init((DeviceState *)dev); + if (!vdev) { + return -1; + } + + return virtio_ccw_device_init(dev, vdev); +} + +static int virtio_ccw_balloon_exit(VirtioCcwDevice *dev) +{ + virtio_balloon_exit(dev->vdev); + return virtio_ccw_exit(dev); +} + +static int virtio_ccw_scsi_init(VirtioCcwDevice *dev) +{ + VirtIODevice *vdev; + + vdev = virtio_scsi_init((DeviceState *)dev, &dev->scsi); + if (!vdev) { + return -1; + } + + return virtio_ccw_device_init(dev, vdev); +} + +static int virtio_ccw_scsi_exit(VirtioCcwDevice *dev) +{ + virtio_scsi_exit(dev->vdev); + return virtio_ccw_exit(dev); +} + +/* 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 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) { + indicators = ldq_phys(dev->indicators); + indicators |= 1ULL << vector; + stq_phys(dev->indicators, indicators); + } else { + vector = 0; + indicators = ldq_phys(dev->indicators2); + indicators |= 1ULL << vector; + stq_phys(dev->indicators2, 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); + + virtio_reset(dev->vdev); + css_reset_sch(dev->sch); +} + +/**************** Virtio-ccw Bus Device Descriptions *******************/ + +static const VirtIOBindings virtio_ccw_bindings = { + .notify = virtio_ccw_notify, + .get_features = virtio_ccw_get_features, +}; + +static Property virtio_ccw_net_properties[] = { + DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), + DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]), + DEFINE_NIC_PROPERTIES(VirtioCcwDevice, nic), + DEFINE_PROP_UINT32("x-txtimer", VirtioCcwDevice, + net.txtimer, TX_TIMER_INTERVAL), + DEFINE_PROP_INT32("x-txburst", VirtioCcwDevice, + net.txburst, TX_BURST), + DEFINE_PROP_STRING("tx", VirtioCcwDevice, net.tx), + 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_net_exit; + dc->reset = virtio_ccw_reset; + dc->props = virtio_ccw_net_properties; +} + +static const TypeInfo virtio_ccw_net = { + .name = "virtio-net-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwDevice), + .class_init = virtio_ccw_net_class_init, +}; + +static Property virtio_ccw_blk_properties[] = { + DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), + DEFINE_BLOCK_PROPERTIES(VirtioCcwDevice, blk.conf), + DEFINE_PROP_STRING("serial", VirtioCcwDevice, blk.serial), +#ifdef __linux__ + DEFINE_PROP_BIT("scsi", VirtioCcwDevice, blk.scsi, 0, true), +#endif + DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]), + 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_blk_exit; + dc->reset = virtio_ccw_reset; + dc->props = virtio_ccw_blk_properties; +} + +static const TypeInfo virtio_ccw_blk = { + .name = "virtio-blk-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwDevice), + .class_init = virtio_ccw_blk_class_init, +}; + +static Property virtio_ccw_serial_properties[] = { + DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), + DEFINE_PROP_UINT32("max_ports", VirtioCcwDevice, + serial.max_virtserial_ports, 31), + DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), + 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_serial_exit; + dc->reset = virtio_ccw_reset; + dc->props = virtio_ccw_serial_properties; +} + +static const TypeInfo virtio_ccw_serial = { + .name = "virtio-serial-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwDevice), + .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_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_balloon_exit; + dc->reset = virtio_ccw_reset; + dc->props = virtio_ccw_balloon_properties; +} + +static const TypeInfo virtio_ccw_balloon = { + .name = "virtio-balloon-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwDevice), + .class_init = virtio_ccw_balloon_class_init, +}; + +static Property virtio_ccw_scsi_properties[] = { + DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), + DEFINE_VIRTIO_SCSI_PROPERTIES(VirtioCcwDevice, host_features[0], scsi), + 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_scsi_exit; + dc->reset = virtio_ccw_reset; + dc->props = virtio_ccw_scsi_properties; +} + +static const TypeInfo virtio_ccw_scsi = { + .name = "virtio-scsi-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwDevice), + .class_init = virtio_ccw_scsi_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, _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; + + /* + * 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)); + qdev_free(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) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + + k->init = virtual_css_bridge_init; + dc->no_user = 1; +} + +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 */ + +void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev) +{ + DeviceState *qdev = DEVICE(dev); + BusState *qbus; + + qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_CCW_BUS, qdev, NULL); + qbus = BUS(bus); + qbus->allow_hotplug = 0; +} + +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; +} + +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); + type_register_static(&virtual_css_bridge_info); +} + +type_init(virtio_ccw_register) |