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virtio-ccw.c
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virtio-ccw.c
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/*
* virtio ccw target implementation
*
* Copyright 2012,2015 IBM Corp.
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
* Pierre Morel <pmorel@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#include "hw/hw.h"
#include "sysemu/block-backend.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_CCW_QUEUE_MAX; n++) {
if (!virtio_queue_get_num(vdev, n)) {
continue;
}
r = virtio_ccw_set_guest2host_notifier(dev, n, true, true);
if (r < 0) {
goto assign_error;
}
}
dev->ioeventfd_started = true;
return;
assign_error:
while (--n >= 0) {
if (!virtio_queue_get_num(vdev, n)) {
continue;
}
r = virtio_ccw_set_guest2host_notifier(dev, n, false, false);
assert(r >= 0);
}
dev->ioeventfd_started = false;
/* Disable ioeventfd for this device. */
dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
error_report("%s: failed. Fallback to userspace (slower).", __func__);
}
static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev)
{
VirtIODevice *vdev;
int n, r;
if (!dev->ioeventfd_started) {
return;
}
vdev = virtio_bus_get_device(&dev->bus);
for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) {
if (!virtio_queue_get_num(vdev, n)) {
continue;
}
r = virtio_ccw_set_guest2host_notifier(dev, n, false, false);
assert(r >= 0);
}
dev->ioeventfd_started = false;
}
VirtualCssBus *virtual_css_bus_init(void)
{
VirtualCssBus *cbus;
BusState *bus;
DeviceState *dev;
/* Create bridge device */
dev = qdev_create(NULL, "virtual-css-bridge");
qdev_init_nofail(dev);
/* Create bus on bridge device */
bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css");
cbus = VIRTUAL_CSS_BUS(bus);
/* Enable hotplugging */
qbus_set_hotplug_handler(bus, dev, &error_abort);
return cbus;
}
/* Communication blocks used by several channel commands. */
typedef struct 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_CCW_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, VIRTIO_NO_VECTOR);
} 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_CCW_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 = address_space_ldq(&address_space_memory, ccw.cda,
MEMTXATTRS_UNSPECIFIED, NULL);
info.align = address_space_ldl(&address_space_memory,
ccw.cda + sizeof(info.queue),
MEMTXATTRS_UNSPECIFIED,
NULL);
info.index = address_space_lduw(&address_space_memory,
ccw.cda + sizeof(info.queue)
+ sizeof(info.align),
MEMTXATTRS_UNSPECIFIED,
NULL);
info.num = address_space_lduw(&address_space_memory,
ccw.cda + sizeof(info.queue)
+ sizeof(info.align)
+ sizeof(info.index),
MEMTXATTRS_UNSPECIFIED,
NULL);
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 = address_space_ldub(&address_space_memory,
ccw.cda
+ sizeof(features.features),
MEMTXATTRS_UNSPECIFIED,
NULL);
if (features.index == 0) {
features.features = vdev->host_features;
} else {
/* Return zeroes if the guest supports more feature bits. */
features.features = 0;
}
address_space_stl_le(&address_space_memory, ccw.cda,
features.features, MEMTXATTRS_UNSPECIFIED,
NULL);
sch->curr_status.scsw.count = ccw.count - sizeof(features);
ret = 0;
}
break;
case CCW_CMD_WRITE_FEAT:
if (check_len) {
if (ccw.count != sizeof(features)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(features)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
features.index = address_space_ldub(&address_space_memory,
ccw.cda
+ sizeof(features.features),
MEMTXATTRS_UNSPECIFIED,
NULL);
features.features = address_space_ldl_le(&address_space_memory,
ccw.cda,
MEMTXATTRS_UNSPECIFIED,
NULL);
if (features.index == 0) {
virtio_set_features(vdev, 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 = address_space_ldub(&address_space_memory, ccw.cda,
MEMTXATTRS_UNSPECIFIED, NULL);
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 = address_space_ldq_be(&address_space_memory, ccw.cda,
MEMTXATTRS_UNSPECIFIED, NULL);
dev->indicators = get_indicator(indicators, sizeof(uint64_t));
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
ret = 0;
}
break;
case CCW_CMD_SET_CONF_IND:
if (check_len) {
if (ccw.count != sizeof(indicators)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(indicators)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
indicators = address_space_ldq_be(&address_space_memory, ccw.cda,
MEMTXATTRS_UNSPECIFIED, NULL);
dev->indicators2 = get_indicator(indicators, sizeof(uint64_t));
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
ret = 0;
}
break;
case CCW_CMD_READ_VQ_CONF:
if (check_len) {
if (ccw.count != sizeof(vq_config)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(vq_config)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
vq_config.index = address_space_lduw_be(&address_space_memory,
ccw.cda,
MEMTXATTRS_UNSPECIFIED,
NULL);
if (vq_config.index >= VIRTIO_CCW_QUEUE_MAX) {
ret = -EINVAL;
break;
}
vq_config.num_max = virtio_queue_get_num(vdev,
vq_config.index);
address_space_stw_be(&address_space_memory,
ccw.cda + sizeof(vq_config.index),
vq_config.num_max,
MEMTXATTRS_UNSPECIFIED,
NULL);
sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
ret = 0;
}
break;
case CCW_CMD_SET_IND_ADAPTER:
if (check_len) {
if (ccw.count != sizeof(*thinint)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(*thinint)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
len = sizeof(*thinint);
hw_len = len;
if (!ccw.cda) {
ret = -EFAULT;
} else if (dev->indicators && !sch->thinint_active) {
/* Trigger a command reject. */
ret = -ENOSYS;
} else {
thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
if (!thinint) {
ret = -EFAULT;
} else {
uint64_t ind_bit = ldq_be_p(&thinint->ind_bit);
len = hw_len;
dev->summary_indicator =
get_indicator(ldq_be_p(&thinint->summary_indicator),
sizeof(uint8_t));
dev->indicators =
get_indicator(ldq_be_p(&thinint->device_indicator),
ind_bit / 8 + 1);
dev->thinint_isc = thinint->isc;
dev->routes.adapter.ind_offset = ind_bit;
dev->routes.adapter.summary_offset = 7;
cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len);
ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
dev->thinint_isc, true, false,
&dev->routes.adapter.adapter_id);
assert(ret == 0);
sch->thinint_active = ((dev->indicators != NULL) &&
(dev->summary_indicator != NULL));
sch->curr_status.scsw.count = ccw.count - len;
ret = 0;
}
}
break;
default:
ret = -ENOSYS;
break;
}
return ret;
}
static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
{
unsigned int cssid = 0;
unsigned int ssid = 0;
unsigned int schid;
unsigned int devno;
bool have_devno = false;
bool found = false;
SubchDev *sch;
int num;
Error *err = NULL;
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
sch = g_malloc0(sizeof(SubchDev));
sch->driver_data = dev;
dev->sch = sch;
dev->indicators = NULL;
/* Initialize subchannel structure. */
sch->channel_prog = 0x0;
sch->last_cmd_valid = false;
sch->thinint_active = false;
/*
* Use a device number if provided. Otherwise, fall back to subchannel
* number.
*/
if (dev->bus_id) {
num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno);
if (num == 3) {
if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) {
error_setg(errp, "Invalid cssid or ssid: cssid %x, ssid %x",
cssid, ssid);
goto out_err;
}
/* Enforce use of virtual cssid. */
if (cssid != VIRTUAL_CSSID) {
error_setg(errp, "cssid %x not valid for virtio devices",
cssid);
goto out_err;
}
if (css_devno_used(cssid, ssid, devno)) {
error_setg(errp, "Device %x.%x.%04x already exists",
cssid, ssid, devno);
goto out_err;
}
sch->cssid = cssid;
sch->ssid = ssid;
sch->devno = devno;
have_devno = true;
} else {
error_setg(errp, "Malformed devno parameter '%s'", dev->bus_id);
goto out_err;
}
}
/* Find the next free id. */
if (have_devno) {
for (schid = 0; schid <= MAX_SCHID; schid++) {
if (!css_find_subch(1, cssid, ssid, schid)) {
sch->schid = schid;
css_subch_assign(cssid, ssid, schid, devno, sch);
found = true;
break;
}
}
if (!found) {
error_setg(errp, "No free subchannel found for %x.%x.%04x",
cssid, ssid, devno);
goto out_err;
}
trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
"user-configured");
} else {
cssid = VIRTUAL_CSSID;
for (ssid = 0; ssid <= MAX_SSID; ssid++) {
for (schid = 0; schid <= MAX_SCHID; schid++) {
if (!css_find_subch(1, cssid, ssid, schid)) {
sch->cssid = cssid;
sch->ssid = ssid;
sch->schid = schid;
devno = schid;
/*
* If the devno is already taken, look further in this
* subchannel set.
*/
while (css_devno_used(cssid, ssid, devno)) {
if (devno == MAX_SCHID) {
devno = 0;
} else if (devno == schid - 1) {
error_setg(errp, "No free devno found");
goto out_err;
} else {
devno++;
}
}
sch->devno = devno;
css_subch_assign(cssid, ssid, schid, devno, sch);
found = true;
break;
}
}
if (found) {
break;
}
}
if (!found) {
error_setg(errp, "Virtual channel subsystem is full!");
goto out_err;
}
trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
"auto-configured");
}
/* Build initial schib. */
css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
sch->ccw_cb = virtio_ccw_cb;
/* Build senseid data. */
memset(&sch->id, 0, sizeof(SenseId));
sch->id.reserved = 0xff;
sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
if (k->realize) {
k->realize(dev, &err);
}
if (err) {
error_propagate(errp, err);
css_subch_assign(cssid, ssid, schid, devno, NULL);
goto out_err;
}
return;
out_err:
dev->sch = NULL;
g_free(sch);
}
static int virtio_ccw_exit(VirtioCcwDevice *dev)
{
SubchDev *sch = dev->sch;
if (sch) {
css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
g_free(sch);
}
if (dev->indicators) {
release_indicator(&dev->routes.adapter, dev->indicators);
dev->indicators = NULL;
}
return 0;
}
static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
DeviceState *qdev = DEVICE(ccw_dev);
VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
Error *err = NULL;
virtio_net_set_netclient_name(&dev->vdev, qdev->id,
object_get_typename(OBJECT(qdev)));
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
}
}
static void virtio_ccw_net_instance_init(Object *obj)
{
VirtIONetCcw *dev = VIRTIO_NET_CCW(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_NET);
object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
"bootindex", &error_abort);
}
static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
Error *err = NULL;
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
}
}
static void virtio_ccw_blk_instance_init(Object *obj)
{
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_BLK);
object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
&error_abort);
object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
"bootindex", &error_abort);
}
static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
DeviceState *proxy = DEVICE(ccw_dev);
Error *err = NULL;
char *bus_name;
/*
* For command line compatibility, this sets the virtio-serial-device bus
* name as before.
*/
if (proxy->id) {
bus_name = g_strdup_printf("%s.0", proxy->id);
virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
g_free(bus_name);
}
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
}
}
static void virtio_ccw_serial_instance_init(Object *obj)
{
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_SERIAL);
}
static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
Error *err = NULL;
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
}
}
static void virtio_ccw_balloon_instance_init(Object *obj)
{
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_BALLOON);
object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
"guest-stats", &error_abort);
object_property_add_alias(obj, "guest-stats-polling-interval",
OBJECT(&dev->vdev),
"guest-stats-polling-interval", &error_abort);
}
static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
DeviceState *qdev = DEVICE(ccw_dev);
Error *err = NULL;
char *bus_name;
/*
* For command line compatibility, this sets the virtio-scsi-device bus
* name as before.
*/
if (qdev->id) {
bus_name = g_strdup_printf("%s.0", qdev->id);
virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
g_free(bus_name);
}
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
}
}
static void virtio_ccw_scsi_instance_init(Object *obj)
{
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_SCSI);
object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread",
&error_abort);
}
#ifdef CONFIG_VHOST_SCSI
static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
Error *err = NULL;
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
}
}
static void vhost_ccw_scsi_instance_init(Object *obj)
{
VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_SCSI);
}
#endif
static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
Error *err = NULL;
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
object_property_set_link(OBJECT(dev),
OBJECT(dev->vdev.conf.rng), "rng",
NULL);
}
/* DeviceState to VirtioCcwDevice. Note: used on datapath,
* be careful and test performance if you change this.
*/
static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
{
return container_of(d, VirtioCcwDevice, parent_obj);
}
static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc,
uint8_t to_be_set)
{
uint8_t ind_old, ind_new;