/*
* 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/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 "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 *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(OBJECT(&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);
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(OBJECT(&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(OBJECT(&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);
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(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
}
static int virtio_ccw_rng_init(VirtioCcwDevice *dev)
{
VirtIODevice *vdev;
if (dev->rng.rng == NULL) {
dev->rng.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM));
object_property_add_child(OBJECT(dev), "default-backend",
OBJECT(dev->rng.default_backend), NULL);
object_property_set_link(OBJECT(dev), OBJECT(dev->rng.default_backend),
"rng", NULL);
}
vdev = virtio_rng_init((DeviceState *)dev, &dev->rng);
if (!vdev) {
return -1;
}
return virtio_ccw_device_init(dev, vdev);
}
static int virtio_ccw_rng_exit(VirtioCcwDevice *dev)
{
virtio_rng_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_VIRTIO_NET_PROPERTIES(VirtioCcwDevice, net),
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_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkCcw, blk),
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_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_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.conf),
DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]),
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,
};
static void virtio_ccw_rng_initfn(Object *obj)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(obj);
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
(Object **)&dev->rng.rng, NULL);
}
static Property virtio_ccw_rng_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
DEFINE_PROP_UINT64("max-bytes", VirtioCcwDevice, rng.max_bytes, INT64_MAX),
DEFINE_PROP_UINT32("period", VirtioCcwDevice, rng.period_ms, 1 << 16),
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_rng_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_rng_properties;
}
static const TypeInfo virtio_ccw_rng = {
.name = "virtio-rng-ccw",
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtioCcwDevice),
.instance_init = virtio_ccw_rng_initfn,
.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, _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);
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 = 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;
}
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(&virtio_ccw_rng);
type_register_static(&virtual_css_bridge_info);
}
type_init(virtio_ccw_register)
