caffdac363
virtio-blk-pci, virtio-blk-s390, and virtio-blk-ccw all duplicate the qdev properties of their VirtIOBlock child. This approach does not work well with string or pointer properties since we must be careful about leaking or double-freeing them. Use the QOM alias property to forward property accesses to the VirtIOBlock child. This way no duplication is necessary. Remember to stop calling virtio_blk_set_conf() so that we don't clobber the values already set on the VirtIOBlock instance. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
1718 lines
53 KiB
C
1718 lines
53 KiB
C
/*
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* virtio ccw target implementation
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*
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* Copyright 2012,2014 IBM Corp.
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* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#include "hw/hw.h"
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#include "block/block.h"
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#include "sysemu/blockdev.h"
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#include "sysemu/sysemu.h"
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#include "net/net.h"
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#include "monitor/monitor.h"
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#include "hw/virtio/virtio.h"
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#include "hw/virtio/virtio-serial.h"
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#include "hw/virtio/virtio-net.h"
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#include "hw/sysbus.h"
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#include "qemu/bitops.h"
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#include "hw/virtio/virtio-bus.h"
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#include "hw/s390x/adapter.h"
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#include "hw/s390x/s390_flic.h"
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#include "ioinst.h"
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#include "css.h"
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#include "virtio-ccw.h"
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#include "trace.h"
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static QTAILQ_HEAD(, IndAddr) indicator_addresses =
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QTAILQ_HEAD_INITIALIZER(indicator_addresses);
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static IndAddr *get_indicator(hwaddr ind_addr, int len)
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{
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IndAddr *indicator;
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QTAILQ_FOREACH(indicator, &indicator_addresses, sibling) {
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if (indicator->addr == ind_addr) {
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indicator->refcnt++;
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return indicator;
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}
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}
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indicator = g_new0(IndAddr, 1);
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indicator->addr = ind_addr;
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indicator->len = len;
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indicator->refcnt = 1;
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QTAILQ_INSERT_TAIL(&indicator_addresses, indicator, sibling);
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return indicator;
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}
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static int s390_io_adapter_map(AdapterInfo *adapter, uint64_t map_addr,
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bool do_map)
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{
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S390FLICState *fs = s390_get_flic();
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S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
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return fsc->io_adapter_map(fs, adapter->adapter_id, map_addr, do_map);
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}
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static void release_indicator(AdapterInfo *adapter, IndAddr *indicator)
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{
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assert(indicator->refcnt > 0);
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indicator->refcnt--;
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if (indicator->refcnt > 0) {
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return;
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}
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QTAILQ_REMOVE(&indicator_addresses, indicator, sibling);
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if (indicator->map) {
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s390_io_adapter_map(adapter, indicator->map, false);
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}
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g_free(indicator);
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}
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static int map_indicator(AdapterInfo *adapter, IndAddr *indicator)
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{
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int ret;
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if (indicator->map) {
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return 0; /* already mapped is not an error */
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}
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indicator->map = indicator->addr;
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ret = s390_io_adapter_map(adapter, indicator->map, true);
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if ((ret != 0) && (ret != -ENOSYS)) {
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goto out_err;
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}
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return 0;
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out_err:
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indicator->map = 0;
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return ret;
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}
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static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
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VirtioCcwDevice *dev);
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static void virtual_css_bus_reset(BusState *qbus)
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{
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/* This should actually be modelled via the generic css */
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css_reset();
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}
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static void virtual_css_bus_class_init(ObjectClass *klass, void *data)
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{
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BusClass *k = BUS_CLASS(klass);
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k->reset = virtual_css_bus_reset;
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}
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static const TypeInfo virtual_css_bus_info = {
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.name = TYPE_VIRTUAL_CSS_BUS,
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.parent = TYPE_BUS,
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.instance_size = sizeof(VirtualCssBus),
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.class_init = virtual_css_bus_class_init,
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};
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VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch)
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{
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VirtIODevice *vdev = NULL;
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VirtioCcwDevice *dev = sch->driver_data;
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if (dev) {
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vdev = virtio_bus_get_device(&dev->bus);
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}
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return vdev;
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}
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static int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n,
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bool assign, bool set_handler)
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{
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VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
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VirtQueue *vq = virtio_get_queue(vdev, n);
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EventNotifier *notifier = virtio_queue_get_host_notifier(vq);
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int r = 0;
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SubchDev *sch = dev->sch;
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uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid;
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if (assign) {
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r = event_notifier_init(notifier, 1);
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if (r < 0) {
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error_report("%s: unable to init event notifier: %d", __func__, r);
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return r;
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}
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virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler);
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r = s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
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if (r < 0) {
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error_report("%s: unable to assign ioeventfd: %d", __func__, r);
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virtio_queue_set_host_notifier_fd_handler(vq, false, false);
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event_notifier_cleanup(notifier);
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return r;
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}
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} else {
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virtio_queue_set_host_notifier_fd_handler(vq, false, false);
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s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
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event_notifier_cleanup(notifier);
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}
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return r;
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}
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static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev)
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{
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VirtIODevice *vdev;
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int n, r;
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if (!(dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) ||
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dev->ioeventfd_disabled ||
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dev->ioeventfd_started) {
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return;
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}
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vdev = virtio_bus_get_device(&dev->bus);
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for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) {
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if (!virtio_queue_get_num(vdev, n)) {
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continue;
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}
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r = virtio_ccw_set_guest2host_notifier(dev, n, true, true);
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if (r < 0) {
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goto assign_error;
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}
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}
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dev->ioeventfd_started = true;
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return;
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assign_error:
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while (--n >= 0) {
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if (!virtio_queue_get_num(vdev, n)) {
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continue;
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}
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r = virtio_ccw_set_guest2host_notifier(dev, n, false, false);
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assert(r >= 0);
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}
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dev->ioeventfd_started = false;
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/* Disable ioeventfd for this device. */
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dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
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error_report("%s: failed. Fallback to userspace (slower).", __func__);
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}
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static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev)
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{
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VirtIODevice *vdev;
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int n, r;
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if (!dev->ioeventfd_started) {
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return;
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}
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vdev = virtio_bus_get_device(&dev->bus);
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for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) {
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if (!virtio_queue_get_num(vdev, n)) {
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continue;
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}
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r = virtio_ccw_set_guest2host_notifier(dev, n, false, false);
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assert(r >= 0);
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}
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dev->ioeventfd_started = false;
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}
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VirtualCssBus *virtual_css_bus_init(void)
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{
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VirtualCssBus *cbus;
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BusState *bus;
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DeviceState *dev;
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/* Create bridge device */
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dev = qdev_create(NULL, "virtual-css-bridge");
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qdev_init_nofail(dev);
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/* Create bus on bridge device */
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bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css");
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cbus = VIRTUAL_CSS_BUS(bus);
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/* Enable hotplugging */
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bus->allow_hotplug = 1;
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return cbus;
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}
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/* Communication blocks used by several channel commands. */
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typedef struct VqInfoBlock {
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uint64_t queue;
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uint32_t align;
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uint16_t index;
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uint16_t num;
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} QEMU_PACKED VqInfoBlock;
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typedef struct VqConfigBlock {
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uint16_t index;
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uint16_t num_max;
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} QEMU_PACKED VqConfigBlock;
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typedef struct VirtioFeatDesc {
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uint32_t features;
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uint8_t index;
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} QEMU_PACKED VirtioFeatDesc;
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typedef struct VirtioThinintInfo {
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hwaddr summary_indicator;
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hwaddr device_indicator;
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uint64_t ind_bit;
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uint8_t isc;
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} QEMU_PACKED VirtioThinintInfo;
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/* Specify where the virtqueues for the subchannel are in guest memory. */
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static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
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uint16_t index, uint16_t num)
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{
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VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
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if (index > VIRTIO_PCI_QUEUE_MAX) {
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return -EINVAL;
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}
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/* Current code in virtio.c relies on 4K alignment. */
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if (addr && (align != 4096)) {
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return -EINVAL;
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}
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if (!vdev) {
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return -EINVAL;
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}
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virtio_queue_set_addr(vdev, index, addr);
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if (!addr) {
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virtio_queue_set_vector(vdev, index, 0);
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} else {
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/* Fail if we don't have a big enough queue. */
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/* TODO: Add interface to handle vring.num changing */
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if (virtio_queue_get_num(vdev, index) > num) {
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return -EINVAL;
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}
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virtio_queue_set_vector(vdev, index, index);
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}
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/* tell notify handler in case of config change */
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vdev->config_vector = VIRTIO_PCI_QUEUE_MAX;
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return 0;
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}
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static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
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{
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int ret;
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VqInfoBlock info;
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uint8_t status;
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VirtioFeatDesc features;
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void *config;
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hwaddr indicators;
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VqConfigBlock vq_config;
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VirtioCcwDevice *dev = sch->driver_data;
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VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
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bool check_len;
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int len;
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hwaddr hw_len;
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VirtioThinintInfo *thinint;
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if (!dev) {
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return -EINVAL;
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}
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trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid,
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ccw.cmd_code);
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check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
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/* Look at the command. */
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switch (ccw.cmd_code) {
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case CCW_CMD_SET_VQ:
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if (check_len) {
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if (ccw.count != sizeof(info)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(info)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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info.queue = ldq_phys(&address_space_memory, ccw.cda);
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info.align = ldl_phys(&address_space_memory,
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ccw.cda + sizeof(info.queue));
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info.index = lduw_phys(&address_space_memory,
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ccw.cda + sizeof(info.queue)
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+ sizeof(info.align));
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info.num = lduw_phys(&address_space_memory,
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ccw.cda + sizeof(info.queue)
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+ sizeof(info.align)
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+ sizeof(info.index));
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ret = virtio_ccw_set_vqs(sch, info.queue, info.align, info.index,
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info.num);
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sch->curr_status.scsw.count = 0;
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}
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break;
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case CCW_CMD_VDEV_RESET:
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virtio_ccw_stop_ioeventfd(dev);
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virtio_reset(vdev);
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ret = 0;
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break;
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case CCW_CMD_READ_FEAT:
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if (check_len) {
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if (ccw.count != sizeof(features)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(features)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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features.index = ldub_phys(&address_space_memory,
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ccw.cda + sizeof(features.features));
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if (features.index < ARRAY_SIZE(dev->host_features)) {
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features.features = dev->host_features[features.index];
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} else {
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/* Return zeroes if the guest supports more feature bits. */
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features.features = 0;
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}
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stl_le_phys(&address_space_memory, ccw.cda, features.features);
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sch->curr_status.scsw.count = ccw.count - sizeof(features);
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ret = 0;
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}
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break;
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case CCW_CMD_WRITE_FEAT:
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if (check_len) {
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if (ccw.count != sizeof(features)) {
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ret = -EINVAL;
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break;
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}
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} else if (ccw.count < sizeof(features)) {
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/* Can't execute command. */
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ret = -EINVAL;
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break;
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}
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if (!ccw.cda) {
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ret = -EFAULT;
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} else {
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features.index = ldub_phys(&address_space_memory,
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ccw.cda + sizeof(features.features));
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features.features = ldl_le_phys(&address_space_memory, ccw.cda);
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if (features.index < ARRAY_SIZE(dev->host_features)) {
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virtio_bus_set_vdev_features(&dev->bus, features.features);
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vdev->guest_features = features.features;
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} else {
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/*
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* If the guest supports more feature bits, assert that it
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* passes us zeroes for those we don't support.
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*/
|
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if (features.features) {
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fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
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features.index, features.features);
|
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/* XXX: do a unit check here? */
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}
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}
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sch->curr_status.scsw.count = ccw.count - sizeof(features);
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ret = 0;
|
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}
|
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break;
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case CCW_CMD_READ_CONF:
|
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if (check_len) {
|
|
if (ccw.count > vdev->config_len) {
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ret = -EINVAL;
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break;
|
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}
|
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}
|
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len = MIN(ccw.count, vdev->config_len);
|
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if (!ccw.cda) {
|
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ret = -EFAULT;
|
|
} else {
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virtio_bus_get_vdev_config(&dev->bus, vdev->config);
|
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/* XXX config space endianness */
|
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cpu_physical_memory_write(ccw.cda, vdev->config, len);
|
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sch->curr_status.scsw.count = ccw.count - len;
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ret = 0;
|
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}
|
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break;
|
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case CCW_CMD_WRITE_CONF:
|
|
if (check_len) {
|
|
if (ccw.count > vdev->config_len) {
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ret = -EINVAL;
|
|
break;
|
|
}
|
|
}
|
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len = MIN(ccw.count, vdev->config_len);
|
|
hw_len = len;
|
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if (!ccw.cda) {
|
|
ret = -EFAULT;
|
|
} else {
|
|
config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
|
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if (!config) {
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ret = -EFAULT;
|
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} else {
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len = hw_len;
|
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/* XXX config space endianness */
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memcpy(vdev->config, config, len);
|
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cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
|
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virtio_bus_set_vdev_config(&dev->bus, vdev->config);
|
|
sch->curr_status.scsw.count = ccw.count - len;
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|
ret = 0;
|
|
}
|
|
}
|
|
break;
|
|
case CCW_CMD_WRITE_STATUS:
|
|
if (check_len) {
|
|
if (ccw.count != sizeof(status)) {
|
|
ret = -EINVAL;
|
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break;
|
|
}
|
|
} else if (ccw.count < sizeof(status)) {
|
|
/* Can't execute command. */
|
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ret = -EINVAL;
|
|
break;
|
|
}
|
|
if (!ccw.cda) {
|
|
ret = -EFAULT;
|
|
} else {
|
|
status = ldub_phys(&address_space_memory, ccw.cda);
|
|
if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
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virtio_ccw_stop_ioeventfd(dev);
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|
}
|
|
virtio_set_status(vdev, status);
|
|
if (vdev->status == 0) {
|
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virtio_reset(vdev);
|
|
}
|
|
if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
|
|
virtio_ccw_start_ioeventfd(dev);
|
|
}
|
|
sch->curr_status.scsw.count = ccw.count - sizeof(status);
|
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ret = 0;
|
|
}
|
|
break;
|
|
case CCW_CMD_SET_IND:
|
|
if (check_len) {
|
|
if (ccw.count != sizeof(indicators)) {
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
} else if (ccw.count < sizeof(indicators)) {
|
|
/* Can't execute command. */
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
if (sch->thinint_active) {
|
|
/* Trigger a command reject. */
|
|
ret = -ENOSYS;
|
|
break;
|
|
}
|
|
if (!ccw.cda) {
|
|
ret = -EFAULT;
|
|
} else {
|
|
indicators = ldq_phys(&address_space_memory, ccw.cda);
|
|
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 = ldq_phys(&address_space_memory, ccw.cda);
|
|
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 = lduw_phys(&address_space_memory, ccw.cda);
|
|
vq_config.num_max = virtio_queue_get_num(vdev,
|
|
vq_config.index);
|
|
stw_phys(&address_space_memory,
|
|
ccw.cda + sizeof(vq_config.index), vq_config.num_max);
|
|
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 {
|
|
len = hw_len;
|
|
dev->summary_indicator =
|
|
get_indicator(thinint->summary_indicator, sizeof(uint8_t));
|
|
dev->indicators = get_indicator(thinint->device_indicator,
|
|
thinint->ind_bit / 8 + 1);
|
|
dev->thinint_isc = thinint->isc;
|
|
dev->routes.adapter.ind_offset = thinint->ind_bit;
|
|
dev->routes.adapter.summary_offset = 7;
|
|
cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len);
|
|
ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
|
|
dev->thinint_isc, true, false,
|
|
&dev->routes.adapter.adapter_id);
|
|
assert(ret == 0);
|
|
sch->thinint_active = ((dev->indicators != NULL) &&
|
|
(dev->summary_indicator != NULL));
|
|
sch->curr_status.scsw.count = ccw.count - len;
|
|
ret = 0;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
ret = -ENOSYS;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev)
|
|
{
|
|
unsigned int cssid = 0;
|
|
unsigned int ssid = 0;
|
|
unsigned int schid;
|
|
unsigned int devno;
|
|
bool have_devno = false;
|
|
bool found = false;
|
|
SubchDev *sch;
|
|
int ret;
|
|
int num;
|
|
DeviceState *parent = DEVICE(dev);
|
|
|
|
sch = g_malloc0(sizeof(SubchDev));
|
|
|
|
sch->driver_data = dev;
|
|
dev->sch = sch;
|
|
|
|
dev->indicators = NULL;
|
|
|
|
/* Initialize subchannel structure. */
|
|
sch->channel_prog = 0x0;
|
|
sch->last_cmd_valid = false;
|
|
sch->thinint_active = false;
|
|
/*
|
|
* Use a device number if provided. Otherwise, fall back to subchannel
|
|
* number.
|
|
*/
|
|
if (dev->bus_id) {
|
|
num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno);
|
|
if (num == 3) {
|
|
if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) {
|
|
ret = -EINVAL;
|
|
error_report("Invalid cssid or ssid: cssid %x, ssid %x",
|
|
cssid, ssid);
|
|
goto out_err;
|
|
}
|
|
/* Enforce use of virtual cssid. */
|
|
if (cssid != VIRTUAL_CSSID) {
|
|
ret = -EINVAL;
|
|
error_report("cssid %x not valid for virtio devices", cssid);
|
|
goto out_err;
|
|
}
|
|
if (css_devno_used(cssid, ssid, devno)) {
|
|
ret = -EEXIST;
|
|
error_report("Device %x.%x.%04x already exists", cssid, ssid,
|
|
devno);
|
|
goto out_err;
|
|
}
|
|
sch->cssid = cssid;
|
|
sch->ssid = ssid;
|
|
sch->devno = devno;
|
|
have_devno = true;
|
|
} else {
|
|
ret = -EINVAL;
|
|
error_report("Malformed devno parameter '%s'", dev->bus_id);
|
|
goto out_err;
|
|
}
|
|
}
|
|
|
|
/* Find the next free id. */
|
|
if (have_devno) {
|
|
for (schid = 0; schid <= MAX_SCHID; schid++) {
|
|
if (!css_find_subch(1, cssid, ssid, schid)) {
|
|
sch->schid = schid;
|
|
css_subch_assign(cssid, ssid, schid, devno, sch);
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!found) {
|
|
ret = -ENODEV;
|
|
error_report("No free subchannel found for %x.%x.%04x", cssid, ssid,
|
|
devno);
|
|
goto out_err;
|
|
}
|
|
trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
|
|
"user-configured");
|
|
} else {
|
|
cssid = VIRTUAL_CSSID;
|
|
for (ssid = 0; ssid <= MAX_SSID; ssid++) {
|
|
for (schid = 0; schid <= MAX_SCHID; schid++) {
|
|
if (!css_find_subch(1, cssid, ssid, schid)) {
|
|
sch->cssid = cssid;
|
|
sch->ssid = ssid;
|
|
sch->schid = schid;
|
|
devno = schid;
|
|
/*
|
|
* If the devno is already taken, look further in this
|
|
* subchannel set.
|
|
*/
|
|
while (css_devno_used(cssid, ssid, devno)) {
|
|
if (devno == MAX_SCHID) {
|
|
devno = 0;
|
|
} else if (devno == schid - 1) {
|
|
ret = -ENODEV;
|
|
error_report("No free devno found");
|
|
goto out_err;
|
|
} else {
|
|
devno++;
|
|
}
|
|
}
|
|
sch->devno = devno;
|
|
css_subch_assign(cssid, ssid, schid, devno, sch);
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (found) {
|
|
break;
|
|
}
|
|
}
|
|
if (!found) {
|
|
ret = -ENODEV;
|
|
error_report("Virtual channel subsystem is full!");
|
|
goto out_err;
|
|
}
|
|
trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
|
|
"auto-configured");
|
|
}
|
|
|
|
/* Build initial schib. */
|
|
css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
|
|
|
|
sch->ccw_cb = virtio_ccw_cb;
|
|
|
|
/* Build senseid data. */
|
|
memset(&sch->id, 0, sizeof(SenseId));
|
|
sch->id.reserved = 0xff;
|
|
sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
|
|
sch->id.cu_model = vdev->device_id;
|
|
|
|
/* Only the first 32 feature bits are used. */
|
|
dev->host_features[0] = virtio_bus_get_vdev_features(&dev->bus,
|
|
dev->host_features[0]);
|
|
|
|
dev->host_features[0] |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
|
dev->host_features[0] |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
|
|
|
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
|
|
parent->hotplugged, 1);
|
|
return 0;
|
|
|
|
out_err:
|
|
dev->sch = NULL;
|
|
g_free(sch);
|
|
return ret;
|
|
}
|
|
|
|
static int virtio_ccw_exit(VirtioCcwDevice *dev)
|
|
{
|
|
SubchDev *sch = dev->sch;
|
|
|
|
if (sch) {
|
|
css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
|
|
g_free(sch);
|
|
}
|
|
if (dev->indicators) {
|
|
release_indicator(&dev->routes.adapter, dev->indicators);
|
|
dev->indicators = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int virtio_ccw_net_init(VirtioCcwDevice *ccw_dev)
|
|
{
|
|
DeviceState *qdev = DEVICE(ccw_dev);
|
|
VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev);
|
|
DeviceState *vdev = DEVICE(&dev->vdev);
|
|
|
|
virtio_net_set_config_size(&dev->vdev, ccw_dev->host_features[0]);
|
|
virtio_net_set_netclient_name(&dev->vdev, qdev->id,
|
|
object_get_typename(OBJECT(qdev)));
|
|
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
|
|
if (qdev_init(vdev) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
|
}
|
|
|
|
static void virtio_ccw_net_instance_init(Object *obj)
|
|
{
|
|
VirtIONetCcw *dev = VIRTIO_NET_CCW(obj);
|
|
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET);
|
|
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
|
|
}
|
|
|
|
static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev)
|
|
{
|
|
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
|
|
DeviceState *vdev = DEVICE(&dev->vdev);
|
|
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
|
|
if (qdev_init(vdev) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
|
}
|
|
|
|
static void virtio_ccw_blk_instance_init(Object *obj)
|
|
{
|
|
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
|
|
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BLK);
|
|
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
|
|
qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
|
|
}
|
|
|
|
static int virtio_ccw_serial_init(VirtioCcwDevice *ccw_dev)
|
|
{
|
|
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));
|
|
if (qdev_init(vdev) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
|
}
|
|
|
|
|
|
static void virtio_ccw_serial_instance_init(Object *obj)
|
|
{
|
|
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
|
|
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL);
|
|
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
|
|
}
|
|
|
|
static int virtio_ccw_balloon_init(VirtioCcwDevice *ccw_dev)
|
|
{
|
|
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
|
|
DeviceState *vdev = DEVICE(&dev->vdev);
|
|
|
|
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
|
|
if (qdev_init(vdev) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
|
}
|
|
|
|
static void balloon_ccw_stats_get_all(Object *obj, struct Visitor *v,
|
|
void *opaque, const char *name,
|
|
Error **errp)
|
|
{
|
|
VirtIOBalloonCcw *dev = opaque;
|
|
object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp);
|
|
}
|
|
|
|
static void balloon_ccw_stats_get_poll_interval(Object *obj, struct Visitor *v,
|
|
void *opaque, const char *name,
|
|
Error **errp)
|
|
{
|
|
VirtIOBalloonCcw *dev = opaque;
|
|
object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
|
errp);
|
|
}
|
|
|
|
static void balloon_ccw_stats_set_poll_interval(Object *obj, struct Visitor *v,
|
|
void *opaque, const char *name,
|
|
Error **errp)
|
|
{
|
|
VirtIOBalloonCcw *dev = opaque;
|
|
object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
|
errp);
|
|
}
|
|
|
|
static void virtio_ccw_balloon_instance_init(Object *obj)
|
|
{
|
|
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
|
|
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BALLOON);
|
|
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
|
|
|
|
object_property_add(obj, "guest-stats", "guest statistics",
|
|
balloon_ccw_stats_get_all, NULL, NULL, dev, NULL);
|
|
|
|
object_property_add(obj, "guest-stats-polling-interval", "int",
|
|
balloon_ccw_stats_get_poll_interval,
|
|
balloon_ccw_stats_set_poll_interval,
|
|
NULL, dev, NULL);
|
|
}
|
|
|
|
static int virtio_ccw_scsi_init(VirtioCcwDevice *ccw_dev)
|
|
{
|
|
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
|
|
DeviceState *vdev = DEVICE(&dev->vdev);
|
|
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));
|
|
if (qdev_init(vdev) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
|
}
|
|
|
|
static void virtio_ccw_scsi_instance_init(Object *obj)
|
|
{
|
|
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
|
|
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SCSI);
|
|
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
|
|
}
|
|
|
|
#ifdef CONFIG_VHOST_SCSI
|
|
static int vhost_ccw_scsi_init(VirtioCcwDevice *ccw_dev)
|
|
{
|
|
VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
|
|
DeviceState *vdev = DEVICE(&dev->vdev);
|
|
|
|
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
|
|
if (qdev_init(vdev) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
|
}
|
|
|
|
static void vhost_ccw_scsi_instance_init(Object *obj)
|
|
{
|
|
VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
|
|
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VHOST_SCSI);
|
|
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
|
|
}
|
|
#endif
|
|
|
|
static int virtio_ccw_rng_init(VirtioCcwDevice *ccw_dev)
|
|
{
|
|
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
|
|
DeviceState *vdev = DEVICE(&dev->vdev);
|
|
|
|
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
|
|
if (qdev_init(vdev) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
object_property_set_link(OBJECT(dev),
|
|
OBJECT(dev->vdev.conf.rng), "rng",
|
|
NULL);
|
|
|
|
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
|
}
|
|
|
|
/* DeviceState to VirtioCcwDevice. Note: used on datapath,
|
|
* be careful and test performance if you change this.
|
|
*/
|
|
static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
|
|
{
|
|
return container_of(d, VirtioCcwDevice, parent_obj);
|
|
}
|
|
|
|
static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc,
|
|
uint8_t to_be_set)
|
|
{
|
|
uint8_t ind_old, ind_new;
|
|
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);
|
|
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);
|
|
SubchDev *sch = dev->sch;
|
|
uint64_t indicators;
|
|
|
|
if (vector >= 128) {
|
|
return;
|
|
}
|
|
|
|
if (vector < VIRTIO_PCI_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 = ldq_phys(&address_space_memory, dev->indicators->addr);
|
|
indicators |= 1ULL << vector;
|
|
stq_phys(&address_space_memory, dev->indicators->addr, indicators);
|
|
css_conditional_io_interrupt(sch);
|
|
}
|
|
} else {
|
|
if (!dev->indicators2) {
|
|
return;
|
|
}
|
|
vector = 0;
|
|
indicators = ldq_phys(&address_space_memory, dev->indicators2->addr);
|
|
indicators |= 1ULL << vector;
|
|
stq_phys(&address_space_memory, dev->indicators2->addr, indicators);
|
|
css_conditional_io_interrupt(sch);
|
|
}
|
|
}
|
|
|
|
static unsigned virtio_ccw_get_features(DeviceState *d)
|
|
{
|
|
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
|
|
|
|
/* Only the first 32 feature bits are used. */
|
|
return dev->host_features[0];
|
|
}
|
|
|
|
static void virtio_ccw_reset(DeviceState *d)
|
|
{
|
|
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
|
|
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
|
|
|
|
virtio_ccw_stop_ioeventfd(dev);
|
|
virtio_reset(vdev);
|
|
css_reset_sch(dev->sch);
|
|
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;
|
|
}
|
|
}
|
|
|
|
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)
|
|
{
|
|
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
|
|
|
|
return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA);
|
|
}
|
|
|
|
static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign)
|
|
{
|
|
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
|
|
|
|
/* Stop using the generic ioeventfd, we are doing eventfd handling
|
|
* ourselves below */
|
|
dev->ioeventfd_disabled = assign;
|
|
if (assign) {
|
|
virtio_ccw_stop_ioeventfd(dev);
|
|
}
|
|
return virtio_ccw_set_guest2host_notifier(dev, n, assign, false);
|
|
}
|
|
|
|
static int virtio_ccw_get_mappings(VirtioCcwDevice *dev)
|
|
{
|
|
int r;
|
|
|
|
if (!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(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(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) {
|
|
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) {
|
|
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);
|
|
bool with_irqfd = 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);
|
|
SubchDev *s = dev->sch;
|
|
|
|
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_be64(f, dev->routes.adapter.ind_offset);
|
|
qemu_put_byte(f, dev->thinint_isc);
|
|
}
|
|
|
|
static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
|
|
{
|
|
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
|
|
SubchDev *s = dev->sch;
|
|
int len;
|
|
|
|
s->driver_data = dev;
|
|
subch_device_load(s, f);
|
|
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;
|
|
}
|
|
dev->routes.adapter.ind_offset = qemu_get_be64(f);
|
|
dev->thinint_isc = qemu_get_byte(f);
|
|
if (s->thinint_active) {
|
|
return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
|
|
dev->thinint_isc, true, false,
|
|
&dev->routes.adapter.adapter_id);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**************** Virtio-ccw Bus Device Descriptions *******************/
|
|
|
|
static Property virtio_ccw_net_properties[] = {
|
|
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
|
DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]),
|
|
DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetCcw, vdev.net_conf),
|
|
DEFINE_NIC_PROPERTIES(VirtIONetCcw, vdev.nic_conf),
|
|
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
|
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void virtio_ccw_net_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
|
|
|
k->init = virtio_ccw_net_init;
|
|
k->exit = virtio_ccw_exit;
|
|
dc->reset = virtio_ccw_reset;
|
|
dc->props = virtio_ccw_net_properties;
|
|
}
|
|
|
|
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_STRING("devno", VirtioCcwDevice, bus_id),
|
|
DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
|
|
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
|
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
|
|
|
k->init = virtio_ccw_blk_init;
|
|
k->exit = virtio_ccw_exit;
|
|
dc->reset = virtio_ccw_reset;
|
|
dc->props = virtio_ccw_blk_properties;
|
|
}
|
|
|
|
static const TypeInfo virtio_ccw_blk = {
|
|
.name = TYPE_VIRTIO_BLK_CCW,
|
|
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
|
.instance_size = sizeof(VirtIOBlkCcw),
|
|
.instance_init = virtio_ccw_blk_instance_init,
|
|
.class_init = virtio_ccw_blk_class_init,
|
|
};
|
|
|
|
static Property virtio_ccw_serial_properties[] = {
|
|
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
|
DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtioSerialCcw, vdev.serial),
|
|
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
|
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
|
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
|
|
|
k->init = virtio_ccw_serial_init;
|
|
k->exit = virtio_ccw_exit;
|
|
dc->reset = virtio_ccw_reset;
|
|
dc->props = virtio_ccw_serial_properties;
|
|
}
|
|
|
|
static const TypeInfo virtio_ccw_serial = {
|
|
.name = TYPE_VIRTIO_SERIAL_CCW,
|
|
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
|
.instance_size = sizeof(VirtioSerialCcw),
|
|
.instance_init = virtio_ccw_serial_instance_init,
|
|
.class_init = virtio_ccw_serial_class_init,
|
|
};
|
|
|
|
static Property virtio_ccw_balloon_properties[] = {
|
|
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
|
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
|
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
|
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
|
|
|
k->init = virtio_ccw_balloon_init;
|
|
k->exit = virtio_ccw_exit;
|
|
dc->reset = virtio_ccw_reset;
|
|
dc->props = virtio_ccw_balloon_properties;
|
|
}
|
|
|
|
static const TypeInfo virtio_ccw_balloon = {
|
|
.name = TYPE_VIRTIO_BALLOON_CCW,
|
|
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
|
.instance_size = sizeof(VirtIOBalloonCcw),
|
|
.instance_init = virtio_ccw_balloon_instance_init,
|
|
.class_init = virtio_ccw_balloon_class_init,
|
|
};
|
|
|
|
static Property virtio_ccw_scsi_properties[] = {
|
|
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
|
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf),
|
|
DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]),
|
|
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
|
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
|
|
|
k->init = virtio_ccw_scsi_init;
|
|
k->exit = virtio_ccw_exit;
|
|
dc->reset = virtio_ccw_reset;
|
|
dc->props = virtio_ccw_scsi_properties;
|
|
}
|
|
|
|
static const TypeInfo virtio_ccw_scsi = {
|
|
.name = TYPE_VIRTIO_SCSI_CCW,
|
|
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
|
.instance_size = sizeof(VirtIOSCSICcw),
|
|
.instance_init = virtio_ccw_scsi_instance_init,
|
|
.class_init = virtio_ccw_scsi_class_init,
|
|
};
|
|
|
|
#ifdef CONFIG_VHOST_SCSI
|
|
static Property vhost_ccw_scsi_properties[] = {
|
|
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
|
DEFINE_VHOST_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf),
|
|
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
|
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->init = vhost_ccw_scsi_init;
|
|
k->exit = virtio_ccw_exit;
|
|
dc->reset = virtio_ccw_reset;
|
|
dc->props = vhost_ccw_scsi_properties;
|
|
}
|
|
|
|
static const TypeInfo vhost_ccw_scsi = {
|
|
.name = TYPE_VHOST_SCSI_CCW,
|
|
.parent = TYPE_VIRTIO_CCW_DEVICE,
|
|
.instance_size = sizeof(VirtIOSCSICcw),
|
|
.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);
|
|
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG);
|
|
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
|
|
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
|
|
(Object **)&dev->vdev.conf.rng,
|
|
qdev_prop_allow_set_link_before_realize,
|
|
OBJ_PROP_LINK_UNREF_ON_RELEASE, NULL);
|
|
}
|
|
|
|
static Property virtio_ccw_rng_properties[] = {
|
|
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
|
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
|
DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGCcw, vdev.conf),
|
|
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
|
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
|
|
|
|
k->init = virtio_ccw_rng_init;
|
|
k->exit = virtio_ccw_exit;
|
|
dc->reset = virtio_ccw_reset;
|
|
dc->props = virtio_ccw_rng_properties;
|
|
}
|
|
|
|
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 int virtio_ccw_busdev_init(DeviceState *dev)
|
|
{
|
|
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
|
|
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
|
|
|
|
virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
|
|
|
|
return _info->init(_dev);
|
|
}
|
|
|
|
static int virtio_ccw_busdev_exit(DeviceState *dev)
|
|
{
|
|
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
|
|
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
|
|
|
|
return _info->exit(_dev);
|
|
}
|
|
|
|
static int virtio_ccw_busdev_unplug(DeviceState *dev)
|
|
{
|
|
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
|
|
SubchDev *sch = _dev->sch;
|
|
|
|
virtio_ccw_stop_ioeventfd(_dev);
|
|
|
|
/*
|
|
* We should arrive here only for device_del, since we don't support
|
|
* direct hot(un)plug of channels, but only through virtio.
|
|
*/
|
|
assert(sch != NULL);
|
|
/* Subchannel is now disabled and no longer valid. */
|
|
sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA |
|
|
PMCW_FLAGS_MASK_DNV);
|
|
|
|
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0);
|
|
|
|
object_unparent(OBJECT(dev));
|
|
return 0;
|
|
}
|
|
|
|
static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->init = virtio_ccw_busdev_init;
|
|
dc->exit = virtio_ccw_busdev_exit;
|
|
dc->unplug = virtio_ccw_busdev_unplug;
|
|
dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
|
|
|
|
}
|
|
|
|
static const TypeInfo virtio_ccw_device_info = {
|
|
.name = TYPE_VIRTIO_CCW_DEVICE,
|
|
.parent = TYPE_DEVICE,
|
|
.instance_size = sizeof(VirtioCcwDevice),
|
|
.class_init = virtio_ccw_device_class_init,
|
|
.class_size = sizeof(VirtIOCCWDeviceClass),
|
|
.abstract = true,
|
|
};
|
|
|
|
/***************** Virtual-css Bus Bridge Device ********************/
|
|
/* Only required to have the virtio bus as child in the system bus */
|
|
|
|
static int virtual_css_bridge_init(SysBusDevice *dev)
|
|
{
|
|
/* nothing */
|
|
return 0;
|
|
}
|
|
|
|
static void virtual_css_bridge_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
|
|
|
|
k->init = virtual_css_bridge_init;
|
|
}
|
|
|
|
static const TypeInfo virtual_css_bridge_info = {
|
|
.name = "virtual-css-bridge",
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(SysBusDevice),
|
|
.class_init = virtual_css_bridge_class_init,
|
|
};
|
|
|
|
/* virtio-ccw-bus */
|
|
|
|
static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
|
|
VirtioCcwDevice *dev)
|
|
{
|
|
DeviceState *qdev = DEVICE(dev);
|
|
BusState *qbus;
|
|
char virtio_bus_name[] = "virtio-bus";
|
|
|
|
qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS,
|
|
qdev, virtio_bus_name);
|
|
qbus = BUS(bus);
|
|
qbus->allow_hotplug = 1;
|
|
}
|
|
|
|
static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
|
|
BusClass *bus_class = BUS_CLASS(klass);
|
|
|
|
bus_class->max_dev = 1;
|
|
k->notify = virtio_ccw_notify;
|
|
k->get_features = virtio_ccw_get_features;
|
|
k->vmstate_change = virtio_ccw_vmstate_change;
|
|
k->query_guest_notifiers = virtio_ccw_query_guest_notifiers;
|
|
k->set_host_notifier = virtio_ccw_set_host_notifier;
|
|
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;
|
|
}
|
|
|
|
static const TypeInfo virtio_ccw_bus_info = {
|
|
.name = TYPE_VIRTIO_CCW_BUS,
|
|
.parent = TYPE_VIRTIO_BUS,
|
|
.instance_size = sizeof(VirtioCcwBusState),
|
|
.class_init = virtio_ccw_bus_class_init,
|
|
};
|
|
|
|
static void virtio_ccw_register(void)
|
|
{
|
|
type_register_static(&virtio_ccw_bus_info);
|
|
type_register_static(&virtual_css_bus_info);
|
|
type_register_static(&virtio_ccw_device_info);
|
|
type_register_static(&virtio_ccw_serial);
|
|
type_register_static(&virtio_ccw_blk);
|
|
type_register_static(&virtio_ccw_net);
|
|
type_register_static(&virtio_ccw_balloon);
|
|
type_register_static(&virtio_ccw_scsi);
|
|
#ifdef CONFIG_VHOST_SCSI
|
|
type_register_static(&vhost_ccw_scsi);
|
|
#endif
|
|
type_register_static(&virtio_ccw_rng);
|
|
type_register_static(&virtual_css_bridge_info);
|
|
}
|
|
|
|
type_init(virtio_ccw_register)
|