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qemu/hw/s390x/virtio-ccw.c
QingFeng Hao cda3c19ff5 virtio-scsi-ccw: use ioeventfd even when KVM is disabled 
This patch is based on a similar patch from Stefan Hajnoczi -
commit c324fd0a39 ("virtio-pci: use ioeventfd even when KVM is disabled")

Do not check kvm_eventfds_enabled() when KVM is disabled since it
always returns 0.  Since commit 8c56c1a592
("memory: emulate ioeventfd") it has been possible to use ioeventfds in
qtest or TCG mode.

This patch makes -device virtio-scsi-ccw,iothread=iothread0 work even
when KVM is disabled.
Currently we don't have an equivalent to "memory: emulate ioeventfd"
for ccw yet, but that this doesn't hurt and qemu-iotests 068 can pass with
skipping iothread arguments.

I have tested that virtio-scsi-ccw works under tcg both with and without
iothread.

This patch fixes qemu-iotests 068, which was accidentally merged early
despite the dependency on ioeventfd.

Signed-off-by: QingFeng Hao <haoqf@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20170704132350.11874-2-haoqf@linux.vnet.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2017-07-05 19:45:02 +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"
#include "hw/s390x/s390-virtio-ccw.h"
#define NR_CLASSIC_INDICATOR_BITS 64
static int virtio_ccw_dev_post_load(void *opaque, int version_id)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(opaque);
CcwDevice *ccw_dev = CCW_DEVICE(dev);
CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
ccw_dev->sch->driver_data = dev;
if (ccw_dev->sch->thinint_active) {
dev->routes.adapter.adapter_id = css_get_adapter_id(
CSS_IO_ADAPTER_VIRTIO,
dev->thinint_isc);
}
/* Re-fill subch_id after loading the subchannel states.*/
if (ck->refill_ids) {
ck->refill_ids(ccw_dev);
}
return 0;
}
typedef struct VirtioCcwDeviceTmp {
VirtioCcwDevice *parent;
uint16_t config_vector;
} VirtioCcwDeviceTmp;
static void virtio_ccw_dev_tmp_pre_save(void *opaque)
{
VirtioCcwDeviceTmp *tmp = opaque;
VirtioCcwDevice *dev = tmp->parent;
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
tmp->config_vector = vdev->config_vector;
}
static int virtio_ccw_dev_tmp_post_load(void *opaque, int version_id)
{
VirtioCcwDeviceTmp *tmp = opaque;
VirtioCcwDevice *dev = tmp->parent;
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
vdev->config_vector = tmp->config_vector;
return 0;
}
const VMStateDescription vmstate_virtio_ccw_dev_tmp = {
.name = "s390_virtio_ccw_dev_tmp",
.pre_save = virtio_ccw_dev_tmp_pre_save,
.post_load = virtio_ccw_dev_tmp_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT16(config_vector, VirtioCcwDeviceTmp),
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_virtio_ccw_dev = {
.name = "s390_virtio_ccw_dev",
.version_id = 1,
.minimum_version_id = 1,
.post_load = virtio_ccw_dev_post_load,
.fields = (VMStateField[]) {
VMSTATE_CCW_DEVICE(parent_obj, VirtioCcwDevice),
VMSTATE_PTR_TO_IND_ADDR(indicators, VirtioCcwDevice),
VMSTATE_PTR_TO_IND_ADDR(indicators2, VirtioCcwDevice),
VMSTATE_PTR_TO_IND_ADDR(summary_indicator, VirtioCcwDevice),
/*
* Ugly hack because VirtIODevice does not migrate itself.
* This also makes legacy via vmstate_save_state possible.
*/
VMSTATE_WITH_TMP(VirtioCcwDevice, VirtioCcwDeviceTmp,
vmstate_virtio_ccw_dev_tmp),
VMSTATE_STRUCT(routes, VirtioCcwDevice, 1, vmstate_adapter_routes,
AdapterRoutes),
VMSTATE_UINT8(thinint_isc, VirtioCcwDevice),
VMSTATE_INT32(revision, VirtioCcwDevice),
VMSTATE_END_OF_LIST()
}
};
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_enabled() && !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);
vmstate_save_state(f, &vmstate_virtio_ccw_dev, dev, NULL);
}
static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
return vmstate_load_state(f, &vmstate_virtio_ccw_dev, dev, 1);
}
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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