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qemu-e2k/hw/s390x/virtio-ccw.c
Halil Pasic 8ed179c937 s390x/css: catch section mismatch on load 
Prior to the virtio-ccw-2.7 machine (and commit 2a79eb1a), our virtio
devices residing under the virtual-css bus do not have qdev_path based
migration stream identifiers (because their qdev_path is NULL). The ids
are instead generated when the device is registered as a composition of
the so called idstr, which takes the vmsd name as its value, and an
instance_id, which is which is calculated as a maximal instance_id
registered with the same idstr plus one, or zero (if none was registered
previously).

That means, under certain circumstances, one device might try, and even
succeed, to load the state of a different device. This can lead to
trouble.

Let us fail the migration if the above problem is detected during load.

How to reproduce the problem:
1) start qemu-system-s390x making sure you have the following devices
   defined on your command line:
     -device virtio-rng-ccw,id=rng1,devno=fe.0.0001
     -device virtio-rng-ccw,id=rng2,devno=fe.0.0002
2) detach the devices and reattach in reverse order using the monitor:
     (qemu) device_del rng1
     (qemu) device_del rng2
     (qemu) device_add virtio-rng-ccw,id=rng2,devno=fe.0.0002
     (qemu) device_add virtio-rng-ccw,id=rng1,devno=fe.0.0001
3) save the state of the vm into a temporary file and quit QEMU:
     (qemu) migrate "exec:gzip -c > /tmp/tmp_vmstate.gz"
     (qemu) q
4) use your command line from step 1 with
     -incoming "exec:gzip -c -d /tmp/tmp_vmstate.gz"
   appended to reproduce the problem (while trying to to load the saved vm)

CC: qemu-stable@nongnu.org
Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Message-Id: <20170518111405.56947-1-pasic@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2017-06-06 10:16:46 +02:00

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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 "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/hw.h"
#include "sysemu/block-backend.h"
#include "sysemu/blockdev.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
#include "net/net.h"
#include "hw/virtio/virtio.h"
#include "hw/virtio/virtio-serial.h"
#include "hw/virtio/virtio-net.h"
#include "hw/sysbus.h"
#include "qemu/bitops.h"
#include "qemu/error-report.h"
#include "hw/virtio/virtio-access.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/s390x/adapter.h"
#include "hw/s390x/s390_flic.h"
#include "hw/s390x/ioinst.h"
#include "hw/s390x/css.h"
#include "virtio-ccw.h"
#include "trace.h"
#include "hw/s390x/css-bridge.h"
#define NR_CLASSIC_INDICATOR_BITS 64
static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
VirtioCcwDevice *dev);
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 void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev)
{
virtio_bus_start_ioeventfd(&dev->bus);
}
static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev)
{
virtio_bus_stop_ioeventfd(&dev->bus);
}
static bool virtio_ccw_ioeventfd_enabled(DeviceState *d)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
return (dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) != 0;
}
static int virtio_ccw_ioeventfd_assign(DeviceState *d, EventNotifier *notifier,
int n, bool assign)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
CcwDevice *ccw_dev = CCW_DEVICE(dev);
SubchDev *sch = ccw_dev->sch;
uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid;
return s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
}
/* Communication blocks used by several channel commands. */
typedef struct VqInfoBlockLegacy {
uint64_t queue;
uint32_t align;
uint16_t index;
uint16_t num;
} QEMU_PACKED VqInfoBlockLegacy;
typedef struct VqInfoBlock {
uint64_t desc;
uint32_t res0;
uint16_t index;
uint16_t num;
uint64_t avail;
uint64_t used;
} QEMU_PACKED VqInfoBlock;
typedef struct VqConfigBlock {
uint16_t index;
uint16_t num_max;
} QEMU_PACKED VqConfigBlock;
typedef struct VirtioFeatDesc {
uint32_t features;
uint8_t index;
} QEMU_PACKED VirtioFeatDesc;
typedef struct VirtioThinintInfo {
hwaddr summary_indicator;
hwaddr device_indicator;
uint64_t ind_bit;
uint8_t isc;
} QEMU_PACKED VirtioThinintInfo;
typedef struct VirtioRevInfo {
uint16_t revision;
uint16_t length;
uint8_t data[0];
} QEMU_PACKED VirtioRevInfo;
/* Specify where the virtqueues for the subchannel are in guest memory. */
static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info,
VqInfoBlockLegacy *linfo)
{
VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
uint16_t index = info ? info->index : linfo->index;
uint16_t num = info ? info->num : linfo->num;
uint64_t desc = info ? info->desc : linfo->queue;
if (index >= VIRTIO_QUEUE_MAX) {
return -EINVAL;
}
/* Current code in virtio.c relies on 4K alignment. */
if (linfo && desc && (linfo->align != 4096)) {
return -EINVAL;
}
if (!vdev) {
return -EINVAL;
}
if (info) {
virtio_queue_set_rings(vdev, index, desc, info->avail, info->used);
} else {
virtio_queue_set_addr(vdev, index, desc);
}
if (!desc) {
virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR);
} else {
if (info) {
/* virtio-1 allows changing the ring size. */
if (virtio_queue_get_max_num(vdev, index) < num) {
/* Fail if we exceed the maximum number. */
return -EINVAL;
}
virtio_queue_set_num(vdev, index, num);
} else if (virtio_queue_get_num(vdev, index) > num) {
/* Fail if we don't have a big enough queue. */
return -EINVAL;
}
/* We ignore possible increased num for legacy for compatibility. */
virtio_queue_set_vector(vdev, index, index);
}
/* tell notify handler in case of config change */
vdev->config_vector = VIRTIO_QUEUE_MAX;
return 0;
}
static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev)
{
CcwDevice *ccw_dev = CCW_DEVICE(dev);
virtio_ccw_stop_ioeventfd(dev);
virtio_reset(vdev);
if (dev->indicators) {
release_indicator(&dev->routes.adapter, dev->indicators);
dev->indicators = NULL;
}
if (dev->indicators2) {
release_indicator(&dev->routes.adapter, dev->indicators2);
dev->indicators2 = NULL;
}
if (dev->summary_indicator) {
release_indicator(&dev->routes.adapter, dev->summary_indicator);
dev->summary_indicator = NULL;
}
ccw_dev->sch->thinint_active = false;
}
static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len,
bool is_legacy)
{
int ret;
VqInfoBlock info;
VqInfoBlockLegacy linfo;
size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info);
if (check_len) {
if (ccw.count != info_len) {
return -EINVAL;
}
} else if (ccw.count < info_len) {
/* Can't execute command. */
return -EINVAL;
}
if (!ccw.cda) {
return -EFAULT;
}
if (is_legacy) {
linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda,
MEMTXATTRS_UNSPECIFIED, NULL);
linfo.align = address_space_ldl_be(&address_space_memory,
ccw.cda + sizeof(linfo.queue),
MEMTXATTRS_UNSPECIFIED,
NULL);
linfo.index = address_space_lduw_be(&address_space_memory,
ccw.cda + sizeof(linfo.queue)
+ sizeof(linfo.align),
MEMTXATTRS_UNSPECIFIED,
NULL);
linfo.num = address_space_lduw_be(&address_space_memory,
ccw.cda + sizeof(linfo.queue)
+ sizeof(linfo.align)
+ sizeof(linfo.index),
MEMTXATTRS_UNSPECIFIED,
NULL);
ret = virtio_ccw_set_vqs(sch, NULL, &linfo);
} else {
info.desc = address_space_ldq_be(&address_space_memory, ccw.cda,
MEMTXATTRS_UNSPECIFIED, NULL);
info.index = address_space_lduw_be(&address_space_memory,
ccw.cda + sizeof(info.desc)
+ sizeof(info.res0),
MEMTXATTRS_UNSPECIFIED, NULL);
info.num = address_space_lduw_be(&address_space_memory,
ccw.cda + sizeof(info.desc)
+ sizeof(info.res0)
+ sizeof(info.index),
MEMTXATTRS_UNSPECIFIED, NULL);
info.avail = address_space_ldq_be(&address_space_memory,
ccw.cda + sizeof(info.desc)
+ sizeof(info.res0)
+ sizeof(info.index)
+ sizeof(info.num),
MEMTXATTRS_UNSPECIFIED, NULL);
info.used = address_space_ldq_be(&address_space_memory,
ccw.cda + sizeof(info.desc)
+ sizeof(info.res0)
+ sizeof(info.index)
+ sizeof(info.num)
+ sizeof(info.avail),
MEMTXATTRS_UNSPECIFIED, NULL);
ret = virtio_ccw_set_vqs(sch, &info, NULL);
}
sch->curr_status.scsw.count = 0;
return ret;
}
static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
{
int ret;
VirtioRevInfo revinfo;
uint8_t status;
VirtioFeatDesc features;
void *config;
hwaddr indicators;
VqConfigBlock vq_config;
VirtioCcwDevice *dev = sch->driver_data;
VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
bool check_len;
int len;
hwaddr hw_len;
VirtioThinintInfo *thinint;
if (!dev) {
return -EINVAL;
}
trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid,
ccw.cmd_code);
check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
if (dev->force_revision_1 && dev->revision < 0 &&
ccw.cmd_code != CCW_CMD_SET_VIRTIO_REV) {
/*
* virtio-1 drivers must start with negotiating to a revision >= 1,
* so post a command reject for all other commands
*/
return -ENOSYS;
}
/* Look at the command. */
switch (ccw.cmd_code) {
case CCW_CMD_SET_VQ:
ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1);
break;
case CCW_CMD_VDEV_RESET:
virtio_ccw_reset_virtio(dev, vdev);
ret = 0;
break;
case CCW_CMD_READ_FEAT:
if (check_len) {
if (ccw.count != sizeof(features)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(features)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
features.index = address_space_ldub(&address_space_memory,
ccw.cda
+ sizeof(features.features),
MEMTXATTRS_UNSPECIFIED,
NULL);
if (features.index == 0) {
if (dev->revision >= 1) {
/* Don't offer legacy features for modern devices. */
features.features = (uint32_t)
(vdev->host_features & ~vdc->legacy_features);
} else {
features.features = (uint32_t)vdev->host_features;
}
} else if ((features.index == 1) && (dev->revision >= 1)) {
/*
* Only offer feature bits beyond 31 if the guest has
* negotiated at least revision 1.
*/
features.features = (uint32_t)(vdev->host_features >> 32);
} else {
/* Return zeroes if the guest supports more feature bits. */
features.features = 0;
}
address_space_stl_le(&address_space_memory, ccw.cda,
features.features, MEMTXATTRS_UNSPECIFIED,
NULL);
sch->curr_status.scsw.count = ccw.count - sizeof(features);
ret = 0;
}
break;
case CCW_CMD_WRITE_FEAT:
if (check_len) {
if (ccw.count != sizeof(features)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(features)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
features.index = address_space_ldub(&address_space_memory,
ccw.cda
+ sizeof(features.features),
MEMTXATTRS_UNSPECIFIED,
NULL);
features.features = address_space_ldl_le(&address_space_memory,
ccw.cda,
MEMTXATTRS_UNSPECIFIED,
NULL);
if (features.index == 0) {
virtio_set_features(vdev,
(vdev->guest_features & 0xffffffff00000000ULL) |
features.features);
} else if ((features.index == 1) && (dev->revision >= 1)) {
/*
* If the guest did not negotiate at least revision 1,
* we did not offer it any feature bits beyond 31. Such a
* guest passing us any bit here is therefore buggy.
*/
virtio_set_features(vdev,
(vdev->guest_features & 0x00000000ffffffffULL) |
((uint64_t)features.features << 32));
} else {
/*
* If the guest supports more feature bits, assert that it
* passes us zeroes for those we don't support.
*/
if (features.features) {
fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
features.index, features.features);
/* XXX: do a unit check here? */
}
}
sch->curr_status.scsw.count = ccw.count - sizeof(features);
ret = 0;
}
break;
case CCW_CMD_READ_CONF:
if (check_len) {
if (ccw.count > vdev->config_len) {
ret = -EINVAL;
break;
}
}
len = MIN(ccw.count, vdev->config_len);
if (!ccw.cda) {
ret = -EFAULT;
} else {
virtio_bus_get_vdev_config(&dev->bus, vdev->config);
/* XXX config space endianness */
cpu_physical_memory_write(ccw.cda, vdev->config, len);
sch->curr_status.scsw.count = ccw.count - len;
ret = 0;
}
break;
case CCW_CMD_WRITE_CONF:
if (check_len) {
if (ccw.count > vdev->config_len) {
ret = -EINVAL;
break;
}
}
len = MIN(ccw.count, vdev->config_len);
hw_len = len;
if (!ccw.cda) {
ret = -EFAULT;
} else {
config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
if (!config) {
ret = -EFAULT;
} else {
len = hw_len;
/* XXX config space endianness */
memcpy(vdev->config, config, len);
cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
virtio_bus_set_vdev_config(&dev->bus, vdev->config);
sch->curr_status.scsw.count = ccw.count - len;
ret = 0;
}
}
break;
case CCW_CMD_READ_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 {
address_space_stb(&address_space_memory, ccw.cda, vdev->status,
MEMTXATTRS_UNSPECIFIED, NULL);
sch->curr_status.scsw.count = ccw.count - sizeof(vdev->status);;
ret = 0;
}
break;
case CCW_CMD_WRITE_STATUS:
if (check_len) {
if (ccw.count != sizeof(status)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(status)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
} else {
status = address_space_ldub(&address_space_memory, ccw.cda,
MEMTXATTRS_UNSPECIFIED, NULL);
if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
virtio_ccw_stop_ioeventfd(dev);
}
if (virtio_set_status(vdev, status) == 0) {
if (vdev->status == 0) {
virtio_ccw_reset_virtio(dev, vdev);
}
if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
virtio_ccw_start_ioeventfd(dev);
}
sch->curr_status.scsw.count = ccw.count - sizeof(status);
ret = 0;
} else {
/* Trigger a command reject. */
ret = -ENOSYS;
}
}
break;
case CCW_CMD_SET_IND:
if (check_len) {
if (ccw.count != sizeof(indicators)) {
ret = -EINVAL;
break;
}
} else if (ccw.count < sizeof(indicators)) {
/* Can't execute command. */
ret = -EINVAL;
break;
}
if (sch->thinint_active) {
/* Trigger a command reject. */
ret = -ENOSYS;
break;
}
if (virtio_get_num_queues(vdev) > NR_CLASSIC_INDICATOR_BITS) {
/* More queues than indicator bits --> trigger a 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_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);
dev->routes.adapter.adapter_id = css_get_adapter_id(
CSS_IO_ADAPTER_VIRTIO,
dev->thinint_isc);
sch->thinint_active = ((dev->indicators != NULL) &&
(dev->summary_indicator != NULL));
sch->curr_status.scsw.count = ccw.count - len;
ret = 0;
}
}
break;
case CCW_CMD_SET_VIRTIO_REV:
len = sizeof(revinfo);
if (ccw.count < len) {
ret = -EINVAL;
break;
}
if (!ccw.cda) {
ret = -EFAULT;
break;
}
revinfo.revision =
address_space_lduw_be(&address_space_memory, ccw.cda,
MEMTXATTRS_UNSPECIFIED, NULL);
revinfo.length =
address_space_lduw_be(&address_space_memory,
ccw.cda + sizeof(revinfo.revision),
MEMTXATTRS_UNSPECIFIED, NULL);
if (ccw.count < len + revinfo.length ||
(check_len && ccw.count > len + revinfo.length)) {
ret = -EINVAL;
break;
}
/*
* Once we start to support revisions with additional data, we'll
* need to fetch it here. Nothing to do for now, though.
*/
if (dev->revision >= 0 ||
revinfo.revision > virtio_ccw_rev_max(dev) ||
(dev->force_revision_1 && !revinfo.revision)) {
ret = -ENOSYS;
break;
}
ret = 0;
dev->revision = revinfo.revision;
break;
default:
ret = -ENOSYS;
break;
}
return ret;
}
static void virtio_sch_disable_cb(SubchDev *sch)
{
VirtioCcwDevice *dev = sch->driver_data;
dev->revision = -1;
}
static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
{
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
CcwDevice *ccw_dev = CCW_DEVICE(dev);
CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
DeviceState *parent = DEVICE(ccw_dev);
BusState *qbus = qdev_get_parent_bus(parent);
VirtualCssBus *cbus = VIRTUAL_CSS_BUS(qbus);
SubchDev *sch;
Error *err = NULL;
sch = css_create_sch(ccw_dev->devno, true, cbus->squash_mcss, errp);
if (!sch) {
return;
}
if (!virtio_ccw_rev_max(dev) && dev->force_revision_1) {
error_setg(&err, "Invalid value of property max_rev "
"(is %d expected >= 1)", virtio_ccw_rev_max(dev));
goto out_err;
}
sch->driver_data = dev;
sch->ccw_cb = virtio_ccw_cb;
sch->disable_cb = virtio_sch_disable_cb;
sch->id.reserved = 0xff;
sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
sch->do_subchannel_work = do_subchannel_work_virtual;
ccw_dev->sch = sch;
dev->indicators = NULL;
dev->revision = -1;
css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
trace_virtio_ccw_new_device(
sch->cssid, sch->ssid, sch->schid, sch->devno,
ccw_dev->devno.valid ? "user-configured" : "auto-configured");
if (!kvm_eventfds_enabled()) {
dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
}
if (k->realize) {
k->realize(dev, &err);
if (err) {
goto out_err;
}
}
ck->realize(ccw_dev, &err);
if (err) {
goto out_err;
}
return;
out_err:
error_propagate(errp, err);
css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
ccw_dev->sch = NULL;
g_free(sch);
}
static int virtio_ccw_exit(VirtioCcwDevice *dev)
{
CcwDevice *ccw_dev = CCW_DEVICE(dev);
SubchDev *sch = ccw_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);
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", errp);
}
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);
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", errp);
}
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);
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", errp);
}
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);
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", errp);
}
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);
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", errp);
}
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);
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", errp);
}
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);
}
static void virtio_ccw_crypto_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_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(vdev),
OBJECT(dev->vdev.conf.cryptodev), "cryptodev",
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)
{
CcwDevice *ccw_dev = to_ccw_dev_fast(d);
return container_of(ccw_dev, 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);
trace_virtio_ccw_set_ind(ind_loc, ind_old, ind_new);
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);
CcwDevice *ccw_dev = to_ccw_dev_fast(d);
SubchDev *sch = ccw_dev->sch;
uint64_t indicators;
/* queue indicators + secondary indicators */
if (vector >= VIRTIO_QUEUE_MAX + 64) {
return;
}
if (vector < VIRTIO_QUEUE_MAX) {
if (!dev->indicators) {
return;
}
if (sch->thinint_active) {
/*
* In the adapter interrupt case, indicators points to a
* memory area that may be (way) larger than 64 bit and
* ind_bit indicates the start of the indicators in a big
* endian notation.
*/
uint64_t ind_bit = dev->routes.adapter.ind_offset;
virtio_set_ind_atomic(sch, dev->indicators->addr +
(ind_bit + vector) / 8,
0x80 >> ((ind_bit + vector) % 8));
if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr,
0x01)) {
css_adapter_interrupt(dev->thinint_isc);
}
} else {
indicators = address_space_ldq(&address_space_memory,
dev->indicators->addr,
MEMTXATTRS_UNSPECIFIED,
NULL);
indicators |= 1ULL << vector;
address_space_stq(&address_space_memory, dev->indicators->addr,
indicators, MEMTXATTRS_UNSPECIFIED, NULL);
css_conditional_io_interrupt(sch);
}
} else {
if (!dev->indicators2) {
return;
}
vector = 0;
indicators = address_space_ldq(&address_space_memory,
dev->indicators2->addr,
MEMTXATTRS_UNSPECIFIED,
NULL);
indicators |= 1ULL << vector;
address_space_stq(&address_space_memory, dev->indicators2->addr,
indicators, MEMTXATTRS_UNSPECIFIED, NULL);
css_conditional_io_interrupt(sch);
}
}
static void virtio_ccw_reset(DeviceState *d)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
CcwDevice *ccw_dev = CCW_DEVICE(d);
virtio_ccw_reset_virtio(dev, vdev);
css_reset_sch(ccw_dev->sch);
}
static void virtio_ccw_vmstate_change(DeviceState *d, bool running)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
if (running) {
virtio_ccw_start_ioeventfd(dev);
} else {
virtio_ccw_stop_ioeventfd(dev);
}
}
static bool virtio_ccw_query_guest_notifiers(DeviceState *d)
{
CcwDevice *dev = CCW_DEVICE(d);
return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA);
}
static int virtio_ccw_get_mappings(VirtioCcwDevice *dev)
{
int r;
CcwDevice *ccw_dev = CCW_DEVICE(dev);
if (!ccw_dev->sch->thinint_active) {
return -EINVAL;
}
r = map_indicator(&dev->routes.adapter, dev->summary_indicator);
if (r) {
return r;
}
r = map_indicator(&dev->routes.adapter, dev->indicators);
if (r) {
return r;
}
dev->routes.adapter.summary_addr = dev->summary_indicator->map;
dev->routes.adapter.ind_addr = dev->indicators->map;
return 0;
}
static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs)
{
int i;
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
int ret;
S390FLICState *fs = s390_get_flic();
S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
ret = virtio_ccw_get_mappings(dev);
if (ret) {
return ret;
}
for (i = 0; i < nvqs; i++) {
if (!virtio_queue_get_num(vdev, i)) {
break;
}
}
dev->routes.num_routes = i;
return fsc->add_adapter_routes(fs, &dev->routes);
}
static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs)
{
S390FLICState *fs = s390_get_flic();
S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
fsc->release_adapter_routes(fs, &dev->routes);
}
static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n)
{
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
VirtQueue *vq = virtio_get_queue(vdev, n);
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL,
dev->routes.gsi[n]);
}
static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n)
{
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
VirtQueue *vq = virtio_get_queue(vdev, n);
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
int ret;
ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier,
dev->routes.gsi[n]);
assert(ret == 0);
}
static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n,
bool assign, bool with_irqfd)
{
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
VirtQueue *vq = virtio_get_queue(vdev, n);
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
if (assign) {
int r = event_notifier_init(notifier, 0);
if (r < 0) {
return r;
}
virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
if (with_irqfd) {
r = virtio_ccw_add_irqfd(dev, n);
if (r) {
virtio_queue_set_guest_notifier_fd_handler(vq, false,
with_irqfd);
return r;
}
}
/*
* We do not support individual masking for channel devices, so we
* need to manually trigger any guest masking callbacks here.
*/
if (k->guest_notifier_mask && vdev->use_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 && vdev->use_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);
CcwDevice *ccw_dev = CCW_DEVICE(d);
bool with_irqfd = ccw_dev->sch->thinint_active && kvm_irqfds_enabled();
int r, n;
if (with_irqfd && assigned) {
/* irq routes need to be set up before assigning irqfds */
r = virtio_ccw_setup_irqroutes(dev, nvqs);
if (r < 0) {
goto irqroute_error;
}
}
for (n = 0; n < nvqs; n++) {
if (!virtio_queue_get_num(vdev, n)) {
break;
}
r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd);
if (r < 0) {
goto assign_error;
}
}
if (with_irqfd && !assigned) {
/* release irq routes after irqfds have been released */
virtio_ccw_release_irqroutes(dev, nvqs);
}
return 0;
assign_error:
while (--n >= 0) {
virtio_ccw_set_guest_notifier(dev, n, !assigned, false);
}
irqroute_error:
if (with_irqfd && assigned) {
virtio_ccw_release_irqroutes(dev, nvqs);
}
return r;
}
static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
qemu_put_be16(f, virtio_queue_vector(vdev, n));
}
static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
uint16_t vector;
qemu_get_be16s(f, &vector);
virtio_queue_set_vector(vdev, n , vector);
return 0;
}
static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
CcwDevice *ccw_dev = CCW_DEVICE(d);
SubchDev *s = ccw_dev->sch;
VirtIODevice *vdev = virtio_ccw_get_vdev(s);
subch_device_save(s, f);
if (dev->indicators != NULL) {
qemu_put_be32(f, dev->indicators->len);
qemu_put_be64(f, dev->indicators->addr);
} else {
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
if (dev->indicators2 != NULL) {
qemu_put_be32(f, dev->indicators2->len);
qemu_put_be64(f, dev->indicators2->addr);
} else {
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
if (dev->summary_indicator != NULL) {
qemu_put_be32(f, dev->summary_indicator->len);
qemu_put_be64(f, dev->summary_indicator->addr);
} else {
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
qemu_put_be16(f, vdev->config_vector);
qemu_put_be64(f, dev->routes.adapter.ind_offset);
qemu_put_byte(f, dev->thinint_isc);
qemu_put_be32(f, dev->revision);
}
static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
CcwDevice *ccw_dev = CCW_DEVICE(d);
CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
SubchDev *s = ccw_dev->sch;
VirtIODevice *vdev = virtio_ccw_get_vdev(s);
int len;
int ret;
s->driver_data = dev;
ret = subch_device_load(s, f);
if (ret) {
return ret;
}
/* Re-fill subch_id after loading the subchannel states.*/
if (ck->refill_ids) {
ck->refill_ids(ccw_dev);
}
len = qemu_get_be32(f);
if (len != 0) {
dev->indicators = get_indicator(qemu_get_be64(f), len);
} else {
qemu_get_be64(f);
dev->indicators = NULL;
}
len = qemu_get_be32(f);
if (len != 0) {
dev->indicators2 = get_indicator(qemu_get_be64(f), len);
} else {
qemu_get_be64(f);
dev->indicators2 = NULL;
}
len = qemu_get_be32(f);
if (len != 0) {
dev->summary_indicator = get_indicator(qemu_get_be64(f), len);
} else {
qemu_get_be64(f);
dev->summary_indicator = NULL;
}
qemu_get_be16s(f, &vdev->config_vector);
dev->routes.adapter.ind_offset = qemu_get_be64(f);
dev->thinint_isc = qemu_get_byte(f);
dev->revision = qemu_get_be32(f);
if (s->thinint_active) {
dev->routes.adapter.adapter_id = css_get_adapter_id(
CSS_IO_ADAPTER_VIRTIO,
dev->thinint_isc);
}
return 0;
}
static void virtio_ccw_pre_plugged(DeviceState *d, Error **errp)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
if (dev->max_rev >= 1) {
virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
}
}
/* This is called by virtio-bus just after the device is plugged. */
static void virtio_ccw_device_plugged(DeviceState *d, Error **errp)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
CcwDevice *ccw_dev = CCW_DEVICE(d);
SubchDev *sch = ccw_dev->sch;
int n = virtio_get_num_queues(vdev);
S390FLICState *flic = s390_get_flic();
if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
dev->max_rev = 0;
}
if (virtio_get_num_queues(vdev) > VIRTIO_QUEUE_MAX) {
error_setg(errp, "The number of virtqueues %d "
"exceeds virtio limit %d", n,
VIRTIO_QUEUE_MAX);
return;
}
if (virtio_get_num_queues(vdev) > flic->adapter_routes_max_batch) {
error_setg(errp, "The number of virtqueues %d "
"exceeds flic adapter route limit %d", n,
flic->adapter_routes_max_batch);
return;
}
sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus);
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
d->hotplugged, 1);
}
static void virtio_ccw_device_unplugged(DeviceState *d)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
virtio_ccw_stop_ioeventfd(dev);
}
/**************** Virtio-ccw Bus Device Descriptions *******************/
static Property virtio_ccw_net_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_net_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->realize = virtio_ccw_net_realize;
k->exit = virtio_ccw_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_net_properties;
set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
}
static const TypeInfo virtio_ccw_net = {
.name = TYPE_VIRTIO_NET_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtIONetCcw),
.instance_init = virtio_ccw_net_instance_init,
.class_init = virtio_ccw_net_class_init,
};
static Property virtio_ccw_blk_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->realize = virtio_ccw_blk_realize;
k->exit = virtio_ccw_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_blk_properties;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo virtio_ccw_blk = {
.name = TYPE_VIRTIO_BLK_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtIOBlkCcw),
.instance_init = virtio_ccw_blk_instance_init,
.class_init = virtio_ccw_blk_class_init,
};
static Property virtio_ccw_serial_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->realize = virtio_ccw_serial_realize;
k->exit = virtio_ccw_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_serial_properties;
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
}
static const TypeInfo virtio_ccw_serial = {
.name = TYPE_VIRTIO_SERIAL_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtioSerialCcw),
.instance_init = virtio_ccw_serial_instance_init,
.class_init = virtio_ccw_serial_class_init,
};
static Property virtio_ccw_balloon_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->realize = virtio_ccw_balloon_realize;
k->exit = virtio_ccw_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_balloon_properties;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
}
static const TypeInfo virtio_ccw_balloon = {
.name = TYPE_VIRTIO_BALLOON_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtIOBalloonCcw),
.instance_init = virtio_ccw_balloon_instance_init,
.class_init = virtio_ccw_balloon_class_init,
};
static Property virtio_ccw_scsi_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->realize = virtio_ccw_scsi_realize;
k->exit = virtio_ccw_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_scsi_properties;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo virtio_ccw_scsi = {
.name = TYPE_VIRTIO_SCSI_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtIOSCSICcw),
.instance_init = virtio_ccw_scsi_instance_init,
.class_init = virtio_ccw_scsi_class_init,
};
#ifdef CONFIG_VHOST_SCSI
static Property vhost_ccw_scsi_properties[] = {
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->realize = vhost_ccw_scsi_realize;
k->exit = virtio_ccw_exit;
dc->reset = virtio_ccw_reset;
dc->props = vhost_ccw_scsi_properties;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo vhost_ccw_scsi = {
.name = TYPE_VHOST_SCSI_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VHostSCSICcw),
.instance_init = vhost_ccw_scsi_instance_init,
.class_init = vhost_ccw_scsi_class_init,
};
#endif
static void virtio_ccw_rng_instance_init(Object *obj)
{
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_RNG);
object_property_add_alias(obj, "rng", OBJECT(&dev->vdev),
"rng", &error_abort);
}
static Property virtio_ccw_rng_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->realize = virtio_ccw_rng_realize;
k->exit = virtio_ccw_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_rng_properties;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
}
static const TypeInfo virtio_ccw_rng = {
.name = TYPE_VIRTIO_RNG_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtIORNGCcw),
.instance_init = virtio_ccw_rng_instance_init,
.class_init = virtio_ccw_rng_class_init,
};
static Property virtio_ccw_crypto_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_crypto_instance_init(Object *obj)
{
VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_CCW(obj);
VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
ccw_dev->force_revision_1 = true;
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_CRYPTO);
object_property_add_alias(obj, "cryptodev", OBJECT(&dev->vdev),
"cryptodev", &error_abort);
}
static void virtio_ccw_crypto_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->realize = virtio_ccw_crypto_realize;
k->exit = virtio_ccw_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_crypto_properties;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
}
static const TypeInfo virtio_ccw_crypto = {
.name = TYPE_VIRTIO_CRYPTO_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VirtIOCryptoCcw),
.instance_init = virtio_ccw_crypto_instance_init,
.class_init = virtio_ccw_crypto_class_init,
};
static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp)
{
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
virtio_ccw_device_realize(_dev, errp);
}
static int virtio_ccw_busdev_exit(DeviceState *dev)
{
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
return _info->exit(_dev);
}
static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
VirtioCcwDevice *_dev = to_virtio_ccw_dev_fast(dev);
virtio_ccw_stop_ioeventfd(_dev);
}
static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
CCWDeviceClass *k = CCW_DEVICE_CLASS(dc);
k->unplug = virtio_ccw_busdev_unplug;
dc->realize = virtio_ccw_busdev_realize;
dc->exit = virtio_ccw_busdev_exit;
dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
}
static const TypeInfo virtio_ccw_device_info = {
.name = TYPE_VIRTIO_CCW_DEVICE,
.parent = TYPE_CCW_DEVICE,
.instance_size = sizeof(VirtioCcwDevice),
.class_init = virtio_ccw_device_class_init,
.class_size = sizeof(VirtIOCCWDeviceClass),
.abstract = true,
};
/* virtio-ccw-bus */
static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
VirtioCcwDevice *dev)
{
DeviceState *qdev = DEVICE(dev);
char virtio_bus_name[] = "virtio-bus";
qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS,
qdev, virtio_bus_name);
}
static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
{
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
BusClass *bus_class = BUS_CLASS(klass);
bus_class->max_dev = 1;
k->notify = virtio_ccw_notify;
k->vmstate_change = virtio_ccw_vmstate_change;
k->query_guest_notifiers = virtio_ccw_query_guest_notifiers;
k->set_guest_notifiers = virtio_ccw_set_guest_notifiers;
k->save_queue = virtio_ccw_save_queue;
k->load_queue = virtio_ccw_load_queue;
k->save_config = virtio_ccw_save_config;
k->load_config = virtio_ccw_load_config;
k->pre_plugged = virtio_ccw_pre_plugged;
k->device_plugged = virtio_ccw_device_plugged;
k->device_unplugged = virtio_ccw_device_unplugged;
k->ioeventfd_enabled = virtio_ccw_ioeventfd_enabled;
k->ioeventfd_assign = virtio_ccw_ioeventfd_assign;
}
static const TypeInfo virtio_ccw_bus_info = {
.name = TYPE_VIRTIO_CCW_BUS,
.parent = TYPE_VIRTIO_BUS,
.instance_size = sizeof(VirtioCcwBusState),
.class_init = virtio_ccw_bus_class_init,
};
#ifdef CONFIG_VIRTFS
static Property virtio_ccw_9p_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", errp);
}
static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->exit = virtio_ccw_exit;
k->realize = virtio_ccw_9p_realize;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_9p_properties;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static void virtio_ccw_9p_instance_init(Object *obj)
{
V9fsCCWState *dev = VIRTIO_9P_CCW(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_9P);
}
static const TypeInfo virtio_ccw_9p_info = {
.name = TYPE_VIRTIO_9P_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(V9fsCCWState),
.instance_init = virtio_ccw_9p_instance_init,
.class_init = virtio_ccw_9p_class_init,
};
#endif
#ifdef CONFIG_VHOST_VSOCK
static Property vhost_vsock_ccw_properties[] = {
DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
VIRTIO_CCW_MAX_REV),
DEFINE_PROP_END_OF_LIST(),
};
static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
{
VHostVSockCCWState *dev = VHOST_VSOCK_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);
error_propagate(errp, err);
}
static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->realize = vhost_vsock_ccw_realize;
k->exit = virtio_ccw_exit;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
dc->props = vhost_vsock_ccw_properties;
dc->reset = virtio_ccw_reset;
}
static void vhost_vsock_ccw_instance_init(Object *obj)
{
VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_VSOCK);
}
static const TypeInfo vhost_vsock_ccw_info = {
.name = TYPE_VHOST_VSOCK_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
.instance_size = sizeof(VHostVSockCCWState),
.instance_init = vhost_vsock_ccw_instance_init,
.class_init = vhost_vsock_ccw_class_init,
};
#endif
static void virtio_ccw_register(void)
{
type_register_static(&virtio_ccw_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);
#ifdef CONFIG_VIRTFS
type_register_static(&virtio_ccw_9p_info);
#endif
#ifdef CONFIG_VHOST_VSOCK
type_register_static(&vhost_vsock_ccw_info);
#endif
type_register_static(&virtio_ccw_crypto);
}
type_init(virtio_ccw_register)
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