root / hw / s390x / virtio-ccw.c @ f24a6840
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/*
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* virtio ccw target implementation
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*
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* Copyright 2012 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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|
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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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|
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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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|
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static int 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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/* we dont traverse ourself, return 0 */
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return 0; |
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} |
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|
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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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|
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k->reset = virtual_css_bus_reset; |
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} |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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/* Enable hotplugging */
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bus->allow_hotplug = 1;
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|
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return cbus;
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} |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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if (!dev) {
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return -EINVAL;
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} |
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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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|
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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(ccw.cda); |
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info.align = ldl_phys(ccw.cda + sizeof(info.queue));
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info.index = lduw_phys(ccw.cda + sizeof(info.queue)
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+ sizeof(info.align));
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info.num = lduw_phys(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); |
| 283 |
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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} |
| 291 |
} 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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} |
| 296 |
if (!ccw.cda) {
|
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ret = -EFAULT; |
| 298 |
} else {
|
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features.index = ldub_phys(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]; |
| 302 |
} 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(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:
|
| 312 |
if (check_len) {
|
| 313 |
if (ccw.count != sizeof(features)) { |
| 314 |
ret = -EINVAL; |
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break;
|
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} |
| 317 |
} else if (ccw.count < sizeof(features)) { |
| 318 |
/* Can't execute command. */
|
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ret = -EINVAL; |
| 320 |
break;
|
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} |
| 322 |
if (!ccw.cda) {
|
| 323 |
ret = -EFAULT; |
| 324 |
} else {
|
| 325 |
features.index = ldub_phys(ccw.cda + sizeof(features.features));
|
| 326 |
features.features = ldl_le_phys(ccw.cda); |
| 327 |
if (features.index < ARRAY_SIZE(dev->host_features)) {
|
| 328 |
virtio_bus_set_vdev_features(&dev->bus, features.features); |
| 329 |
vdev->guest_features = features.features; |
| 330 |
} else {
|
| 331 |
/*
|
| 332 |
* If the guest supports more feature bits, assert that it
|
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* passes us zeroes for those we don't support.
|
| 334 |
*/
|
| 335 |
if (features.features) {
|
| 336 |
fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
|
| 337 |
features.index, features.features); |
| 338 |
/* XXX: do a unit check here? */
|
| 339 |
} |
| 340 |
} |
| 341 |
sch->curr_status.scsw.count = ccw.count - sizeof(features);
|
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ret = 0;
|
| 343 |
} |
| 344 |
break;
|
| 345 |
case CCW_CMD_READ_CONF:
|
| 346 |
if (check_len) {
|
| 347 |
if (ccw.count > vdev->config_len) {
|
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ret = -EINVAL; |
| 349 |
break;
|
| 350 |
} |
| 351 |
} |
| 352 |
len = MIN(ccw.count, vdev->config_len); |
| 353 |
if (!ccw.cda) {
|
| 354 |
ret = -EFAULT; |
| 355 |
} else {
|
| 356 |
virtio_bus_get_vdev_config(&dev->bus, vdev->config); |
| 357 |
/* XXX config space endianness */
|
| 358 |
cpu_physical_memory_write(ccw.cda, vdev->config, len); |
| 359 |
sch->curr_status.scsw.count = ccw.count - len; |
| 360 |
ret = 0;
|
| 361 |
} |
| 362 |
break;
|
| 363 |
case CCW_CMD_WRITE_CONF:
|
| 364 |
if (check_len) {
|
| 365 |
if (ccw.count > vdev->config_len) {
|
| 366 |
ret = -EINVAL; |
| 367 |
break;
|
| 368 |
} |
| 369 |
} |
| 370 |
len = MIN(ccw.count, vdev->config_len); |
| 371 |
hw_len = len; |
| 372 |
if (!ccw.cda) {
|
| 373 |
ret = -EFAULT; |
| 374 |
} else {
|
| 375 |
config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
|
| 376 |
if (!config) {
|
| 377 |
ret = -EFAULT; |
| 378 |
} else {
|
| 379 |
len = hw_len; |
| 380 |
/* XXX config space endianness */
|
| 381 |
memcpy(vdev->config, config, len); |
| 382 |
cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
|
| 383 |
virtio_bus_set_vdev_config(&dev->bus, vdev->config); |
| 384 |
sch->curr_status.scsw.count = ccw.count - len; |
| 385 |
ret = 0;
|
| 386 |
} |
| 387 |
} |
| 388 |
break;
|
| 389 |
case CCW_CMD_WRITE_STATUS:
|
| 390 |
if (check_len) {
|
| 391 |
if (ccw.count != sizeof(status)) { |
| 392 |
ret = -EINVAL; |
| 393 |
break;
|
| 394 |
} |
| 395 |
} else if (ccw.count < sizeof(status)) { |
| 396 |
/* Can't execute command. */
|
| 397 |
ret = -EINVAL; |
| 398 |
break;
|
| 399 |
} |
| 400 |
if (!ccw.cda) {
|
| 401 |
ret = -EFAULT; |
| 402 |
} else {
|
| 403 |
status = ldub_phys(ccw.cda); |
| 404 |
if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
|
| 405 |
virtio_ccw_stop_ioeventfd(dev); |
| 406 |
} |
| 407 |
virtio_set_status(vdev, status); |
| 408 |
if (vdev->status == 0) { |
| 409 |
virtio_reset(vdev); |
| 410 |
} |
| 411 |
if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
|
| 412 |
virtio_ccw_start_ioeventfd(dev); |
| 413 |
} |
| 414 |
sch->curr_status.scsw.count = ccw.count - sizeof(status);
|
| 415 |
ret = 0;
|
| 416 |
} |
| 417 |
break;
|
| 418 |
case CCW_CMD_SET_IND:
|
| 419 |
if (check_len) {
|
| 420 |
if (ccw.count != sizeof(indicators)) { |
| 421 |
ret = -EINVAL; |
| 422 |
break;
|
| 423 |
} |
| 424 |
} else if (ccw.count < sizeof(indicators)) { |
| 425 |
/* Can't execute command. */
|
| 426 |
ret = -EINVAL; |
| 427 |
break;
|
| 428 |
} |
| 429 |
if (!ccw.cda) {
|
| 430 |
ret = -EFAULT; |
| 431 |
} else {
|
| 432 |
indicators = ldq_phys(ccw.cda); |
| 433 |
dev->indicators = indicators; |
| 434 |
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
|
| 435 |
ret = 0;
|
| 436 |
} |
| 437 |
break;
|
| 438 |
case CCW_CMD_SET_CONF_IND:
|
| 439 |
if (check_len) {
|
| 440 |
if (ccw.count != sizeof(indicators)) { |
| 441 |
ret = -EINVAL; |
| 442 |
break;
|
| 443 |
} |
| 444 |
} else if (ccw.count < sizeof(indicators)) { |
| 445 |
/* Can't execute command. */
|
| 446 |
ret = -EINVAL; |
| 447 |
break;
|
| 448 |
} |
| 449 |
if (!ccw.cda) {
|
| 450 |
ret = -EFAULT; |
| 451 |
} else {
|
| 452 |
indicators = ldq_phys(ccw.cda); |
| 453 |
dev->indicators2 = indicators; |
| 454 |
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
|
| 455 |
ret = 0;
|
| 456 |
} |
| 457 |
break;
|
| 458 |
case CCW_CMD_READ_VQ_CONF:
|
| 459 |
if (check_len) {
|
| 460 |
if (ccw.count != sizeof(vq_config)) { |
| 461 |
ret = -EINVAL; |
| 462 |
break;
|
| 463 |
} |
| 464 |
} else if (ccw.count < sizeof(vq_config)) { |
| 465 |
/* Can't execute command. */
|
| 466 |
ret = -EINVAL; |
| 467 |
break;
|
| 468 |
} |
| 469 |
if (!ccw.cda) {
|
| 470 |
ret = -EFAULT; |
| 471 |
} else {
|
| 472 |
vq_config.index = lduw_phys(ccw.cda); |
| 473 |
vq_config.num_max = virtio_queue_get_num(vdev, |
| 474 |
vq_config.index); |
| 475 |
stw_phys(ccw.cda + sizeof(vq_config.index), vq_config.num_max);
|
| 476 |
sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
|
| 477 |
ret = 0;
|
| 478 |
} |
| 479 |
break;
|
| 480 |
default:
|
| 481 |
ret = -ENOSYS; |
| 482 |
break;
|
| 483 |
} |
| 484 |
return ret;
|
| 485 |
} |
| 486 |
|
| 487 |
static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev) |
| 488 |
{
|
| 489 |
unsigned int cssid = 0; |
| 490 |
unsigned int ssid = 0; |
| 491 |
unsigned int schid; |
| 492 |
unsigned int devno; |
| 493 |
bool have_devno = false; |
| 494 |
bool found = false; |
| 495 |
SubchDev *sch; |
| 496 |
int ret;
|
| 497 |
int num;
|
| 498 |
DeviceState *parent = DEVICE(dev); |
| 499 |
|
| 500 |
sch = g_malloc0(sizeof(SubchDev));
|
| 501 |
|
| 502 |
sch->driver_data = dev; |
| 503 |
dev->sch = sch; |
| 504 |
|
| 505 |
dev->indicators = 0;
|
| 506 |
|
| 507 |
/* Initialize subchannel structure. */
|
| 508 |
sch->channel_prog = 0x0;
|
| 509 |
sch->last_cmd_valid = false;
|
| 510 |
sch->orb = NULL;
|
| 511 |
/*
|
| 512 |
* Use a device number if provided. Otherwise, fall back to subchannel
|
| 513 |
* number.
|
| 514 |
*/
|
| 515 |
if (dev->bus_id) {
|
| 516 |
num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno);
|
| 517 |
if (num == 3) { |
| 518 |
if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) {
|
| 519 |
ret = -EINVAL; |
| 520 |
error_report("Invalid cssid or ssid: cssid %x, ssid %x",
|
| 521 |
cssid, ssid); |
| 522 |
goto out_err;
|
| 523 |
} |
| 524 |
/* Enforce use of virtual cssid. */
|
| 525 |
if (cssid != VIRTUAL_CSSID) {
|
| 526 |
ret = -EINVAL; |
| 527 |
error_report("cssid %x not valid for virtio devices", cssid);
|
| 528 |
goto out_err;
|
| 529 |
} |
| 530 |
if (css_devno_used(cssid, ssid, devno)) {
|
| 531 |
ret = -EEXIST; |
| 532 |
error_report("Device %x.%x.%04x already exists", cssid, ssid,
|
| 533 |
devno); |
| 534 |
goto out_err;
|
| 535 |
} |
| 536 |
sch->cssid = cssid; |
| 537 |
sch->ssid = ssid; |
| 538 |
sch->devno = devno; |
| 539 |
have_devno = true;
|
| 540 |
} else {
|
| 541 |
ret = -EINVAL; |
| 542 |
error_report("Malformed devno parameter '%s'", dev->bus_id);
|
| 543 |
goto out_err;
|
| 544 |
} |
| 545 |
} |
| 546 |
|
| 547 |
/* Find the next free id. */
|
| 548 |
if (have_devno) {
|
| 549 |
for (schid = 0; schid <= MAX_SCHID; schid++) { |
| 550 |
if (!css_find_subch(1, cssid, ssid, schid)) { |
| 551 |
sch->schid = schid; |
| 552 |
css_subch_assign(cssid, ssid, schid, devno, sch); |
| 553 |
found = true;
|
| 554 |
break;
|
| 555 |
} |
| 556 |
} |
| 557 |
if (!found) {
|
| 558 |
ret = -ENODEV; |
| 559 |
error_report("No free subchannel found for %x.%x.%04x", cssid, ssid,
|
| 560 |
devno); |
| 561 |
goto out_err;
|
| 562 |
} |
| 563 |
trace_virtio_ccw_new_device(cssid, ssid, schid, devno, |
| 564 |
"user-configured");
|
| 565 |
} else {
|
| 566 |
cssid = VIRTUAL_CSSID; |
| 567 |
for (ssid = 0; ssid <= MAX_SSID; ssid++) { |
| 568 |
for (schid = 0; schid <= MAX_SCHID; schid++) { |
| 569 |
if (!css_find_subch(1, cssid, ssid, schid)) { |
| 570 |
sch->cssid = cssid; |
| 571 |
sch->ssid = ssid; |
| 572 |
sch->schid = schid; |
| 573 |
devno = schid; |
| 574 |
/*
|
| 575 |
* If the devno is already taken, look further in this
|
| 576 |
* subchannel set.
|
| 577 |
*/
|
| 578 |
while (css_devno_used(cssid, ssid, devno)) {
|
| 579 |
if (devno == MAX_SCHID) {
|
| 580 |
devno = 0;
|
| 581 |
} else if (devno == schid - 1) { |
| 582 |
ret = -ENODEV; |
| 583 |
error_report("No free devno found");
|
| 584 |
goto out_err;
|
| 585 |
} else {
|
| 586 |
devno++; |
| 587 |
} |
| 588 |
} |
| 589 |
sch->devno = devno; |
| 590 |
css_subch_assign(cssid, ssid, schid, devno, sch); |
| 591 |
found = true;
|
| 592 |
break;
|
| 593 |
} |
| 594 |
} |
| 595 |
if (found) {
|
| 596 |
break;
|
| 597 |
} |
| 598 |
} |
| 599 |
if (!found) {
|
| 600 |
ret = -ENODEV; |
| 601 |
error_report("Virtual channel subsystem is full!");
|
| 602 |
goto out_err;
|
| 603 |
} |
| 604 |
trace_virtio_ccw_new_device(cssid, ssid, schid, devno, |
| 605 |
"auto-configured");
|
| 606 |
} |
| 607 |
|
| 608 |
/* Build initial schib. */
|
| 609 |
css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
|
| 610 |
|
| 611 |
sch->ccw_cb = virtio_ccw_cb; |
| 612 |
|
| 613 |
/* Build senseid data. */
|
| 614 |
memset(&sch->id, 0, sizeof(SenseId)); |
| 615 |
sch->id.reserved = 0xff;
|
| 616 |
sch->id.cu_type = VIRTIO_CCW_CU_TYPE; |
| 617 |
sch->id.cu_model = vdev->device_id; |
| 618 |
|
| 619 |
/* Only the first 32 feature bits are used. */
|
| 620 |
dev->host_features[0] = virtio_bus_get_vdev_features(&dev->bus,
|
| 621 |
dev->host_features[0]);
|
| 622 |
|
| 623 |
dev->host_features[0] |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; |
| 624 |
dev->host_features[0] |= 0x1 << VIRTIO_F_BAD_FEATURE; |
| 625 |
|
| 626 |
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, |
| 627 |
parent->hotplugged, 1);
|
| 628 |
return 0; |
| 629 |
|
| 630 |
out_err:
|
| 631 |
dev->sch = NULL;
|
| 632 |
g_free(sch); |
| 633 |
return ret;
|
| 634 |
} |
| 635 |
|
| 636 |
static int virtio_ccw_exit(VirtioCcwDevice *dev) |
| 637 |
{
|
| 638 |
SubchDev *sch = dev->sch; |
| 639 |
|
| 640 |
if (sch) {
|
| 641 |
css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
|
| 642 |
g_free(sch); |
| 643 |
} |
| 644 |
dev->indicators = 0;
|
| 645 |
return 0; |
| 646 |
} |
| 647 |
|
| 648 |
static int virtio_ccw_net_init(VirtioCcwDevice *ccw_dev) |
| 649 |
{
|
| 650 |
DeviceState *qdev = DEVICE(ccw_dev); |
| 651 |
VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); |
| 652 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 653 |
|
| 654 |
virtio_net_set_config_size(&dev->vdev, ccw_dev->host_features[0]);
|
| 655 |
virtio_net_set_netclient_name(&dev->vdev, qdev->id, |
| 656 |
object_get_typename(OBJECT(qdev))); |
| 657 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| 658 |
if (qdev_init(vdev) < 0) { |
| 659 |
return -1; |
| 660 |
} |
| 661 |
|
| 662 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
| 663 |
} |
| 664 |
|
| 665 |
static void virtio_ccw_net_instance_init(Object *obj) |
| 666 |
{
|
| 667 |
VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); |
| 668 |
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET);
|
| 669 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 670 |
} |
| 671 |
|
| 672 |
static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev) |
| 673 |
{
|
| 674 |
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); |
| 675 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 676 |
virtio_blk_set_conf(vdev, &(dev->blk)); |
| 677 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| 678 |
if (qdev_init(vdev) < 0) { |
| 679 |
return -1; |
| 680 |
} |
| 681 |
|
| 682 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
| 683 |
} |
| 684 |
|
| 685 |
static void virtio_ccw_blk_instance_init(Object *obj) |
| 686 |
{
|
| 687 |
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); |
| 688 |
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BLK);
|
| 689 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 690 |
} |
| 691 |
|
| 692 |
static int virtio_ccw_serial_init(VirtioCcwDevice *ccw_dev) |
| 693 |
{
|
| 694 |
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); |
| 695 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 696 |
DeviceState *proxy = DEVICE(ccw_dev); |
| 697 |
char *bus_name;
|
| 698 |
|
| 699 |
/*
|
| 700 |
* For command line compatibility, this sets the virtio-serial-device bus
|
| 701 |
* name as before.
|
| 702 |
*/
|
| 703 |
if (proxy->id) {
|
| 704 |
bus_name = g_strdup_printf("%s.0", proxy->id);
|
| 705 |
virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); |
| 706 |
g_free(bus_name); |
| 707 |
} |
| 708 |
|
| 709 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| 710 |
if (qdev_init(vdev) < 0) { |
| 711 |
return -1; |
| 712 |
} |
| 713 |
|
| 714 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
| 715 |
} |
| 716 |
|
| 717 |
|
| 718 |
static void virtio_ccw_serial_instance_init(Object *obj) |
| 719 |
{
|
| 720 |
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); |
| 721 |
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL);
|
| 722 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 723 |
} |
| 724 |
|
| 725 |
static int virtio_ccw_balloon_init(VirtioCcwDevice *ccw_dev) |
| 726 |
{
|
| 727 |
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); |
| 728 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 729 |
|
| 730 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| 731 |
if (qdev_init(vdev) < 0) { |
| 732 |
return -1; |
| 733 |
} |
| 734 |
|
| 735 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
| 736 |
} |
| 737 |
|
| 738 |
static void balloon_ccw_stats_get_all(Object *obj, struct Visitor *v, |
| 739 |
void *opaque, const char *name, |
| 740 |
Error **errp) |
| 741 |
{
|
| 742 |
VirtIOBalloonCcw *dev = opaque; |
| 743 |
object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp);
|
| 744 |
} |
| 745 |
|
| 746 |
static void balloon_ccw_stats_get_poll_interval(Object *obj, struct Visitor *v, |
| 747 |
void *opaque, const char *name, |
| 748 |
Error **errp) |
| 749 |
{
|
| 750 |
VirtIOBalloonCcw *dev = opaque; |
| 751 |
object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
| 752 |
errp); |
| 753 |
} |
| 754 |
|
| 755 |
static void balloon_ccw_stats_set_poll_interval(Object *obj, struct Visitor *v, |
| 756 |
void *opaque, const char *name, |
| 757 |
Error **errp) |
| 758 |
{
|
| 759 |
VirtIOBalloonCcw *dev = opaque; |
| 760 |
object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
| 761 |
errp); |
| 762 |
} |
| 763 |
|
| 764 |
static void virtio_ccw_balloon_instance_init(Object *obj) |
| 765 |
{
|
| 766 |
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); |
| 767 |
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BALLOON);
|
| 768 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 769 |
|
| 770 |
object_property_add(obj, "guest-stats", "guest statistics", |
| 771 |
balloon_ccw_stats_get_all, NULL, NULL, dev, NULL); |
| 772 |
|
| 773 |
object_property_add(obj, "guest-stats-polling-interval", "int", |
| 774 |
balloon_ccw_stats_get_poll_interval, |
| 775 |
balloon_ccw_stats_set_poll_interval, |
| 776 |
NULL, dev, NULL); |
| 777 |
} |
| 778 |
|
| 779 |
static int virtio_ccw_scsi_init(VirtioCcwDevice *ccw_dev) |
| 780 |
{
|
| 781 |
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); |
| 782 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 783 |
DeviceState *qdev = DEVICE(ccw_dev); |
| 784 |
char *bus_name;
|
| 785 |
|
| 786 |
/*
|
| 787 |
* For command line compatibility, this sets the virtio-scsi-device bus
|
| 788 |
* name as before.
|
| 789 |
*/
|
| 790 |
if (qdev->id) {
|
| 791 |
bus_name = g_strdup_printf("%s.0", qdev->id);
|
| 792 |
virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); |
| 793 |
g_free(bus_name); |
| 794 |
} |
| 795 |
|
| 796 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| 797 |
if (qdev_init(vdev) < 0) { |
| 798 |
return -1; |
| 799 |
} |
| 800 |
|
| 801 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
| 802 |
} |
| 803 |
|
| 804 |
static void virtio_ccw_scsi_instance_init(Object *obj) |
| 805 |
{
|
| 806 |
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); |
| 807 |
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SCSI);
|
| 808 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 809 |
} |
| 810 |
|
| 811 |
#ifdef CONFIG_VHOST_SCSI
|
| 812 |
static int vhost_ccw_scsi_init(VirtioCcwDevice *ccw_dev) |
| 813 |
{
|
| 814 |
VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); |
| 815 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 816 |
|
| 817 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| 818 |
if (qdev_init(vdev) < 0) { |
| 819 |
return -1; |
| 820 |
} |
| 821 |
|
| 822 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
| 823 |
} |
| 824 |
|
| 825 |
static void vhost_ccw_scsi_instance_init(Object *obj) |
| 826 |
{
|
| 827 |
VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); |
| 828 |
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VHOST_SCSI);
|
| 829 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 830 |
} |
| 831 |
#endif
|
| 832 |
|
| 833 |
static int virtio_ccw_rng_init(VirtioCcwDevice *ccw_dev) |
| 834 |
{
|
| 835 |
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); |
| 836 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 837 |
|
| 838 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
| 839 |
if (qdev_init(vdev) < 0) { |
| 840 |
return -1; |
| 841 |
} |
| 842 |
|
| 843 |
object_property_set_link(OBJECT(dev), |
| 844 |
OBJECT(dev->vdev.conf.rng), "rng",
|
| 845 |
NULL);
|
| 846 |
|
| 847 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
| 848 |
} |
| 849 |
|
| 850 |
/* DeviceState to VirtioCcwDevice. Note: used on datapath,
|
| 851 |
* be careful and test performance if you change this.
|
| 852 |
*/
|
| 853 |
static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) |
| 854 |
{
|
| 855 |
return container_of(d, VirtioCcwDevice, parent_obj);
|
| 856 |
} |
| 857 |
|
| 858 |
static void virtio_ccw_notify(DeviceState *d, uint16_t vector) |
| 859 |
{
|
| 860 |
VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); |
| 861 |
SubchDev *sch = dev->sch; |
| 862 |
uint64_t indicators; |
| 863 |
|
| 864 |
if (vector >= 128) { |
| 865 |
return;
|
| 866 |
} |
| 867 |
|
| 868 |
if (vector < VIRTIO_PCI_QUEUE_MAX) {
|
| 869 |
if (!dev->indicators) {
|
| 870 |
return;
|
| 871 |
} |
| 872 |
indicators = ldq_phys(dev->indicators); |
| 873 |
indicators |= 1ULL << vector;
|
| 874 |
stq_phys(dev->indicators, indicators); |
| 875 |
} else {
|
| 876 |
if (!dev->indicators2) {
|
| 877 |
return;
|
| 878 |
} |
| 879 |
vector = 0;
|
| 880 |
indicators = ldq_phys(dev->indicators2); |
| 881 |
indicators |= 1ULL << vector;
|
| 882 |
stq_phys(dev->indicators2, indicators); |
| 883 |
} |
| 884 |
|
| 885 |
css_conditional_io_interrupt(sch); |
| 886 |
|
| 887 |
} |
| 888 |
|
| 889 |
static unsigned virtio_ccw_get_features(DeviceState *d) |
| 890 |
{
|
| 891 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
| 892 |
|
| 893 |
/* Only the first 32 feature bits are used. */
|
| 894 |
return dev->host_features[0]; |
| 895 |
} |
| 896 |
|
| 897 |
static void virtio_ccw_reset(DeviceState *d) |
| 898 |
{
|
| 899 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
| 900 |
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); |
| 901 |
|
| 902 |
virtio_ccw_stop_ioeventfd(dev); |
| 903 |
virtio_reset(vdev); |
| 904 |
css_reset_sch(dev->sch); |
| 905 |
dev->indicators = 0;
|
| 906 |
dev->indicators2 = 0;
|
| 907 |
} |
| 908 |
|
| 909 |
static void virtio_ccw_vmstate_change(DeviceState *d, bool running) |
| 910 |
{
|
| 911 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
| 912 |
|
| 913 |
if (running) {
|
| 914 |
virtio_ccw_start_ioeventfd(dev); |
| 915 |
} else {
|
| 916 |
virtio_ccw_stop_ioeventfd(dev); |
| 917 |
} |
| 918 |
} |
| 919 |
|
| 920 |
static bool virtio_ccw_query_guest_notifiers(DeviceState *d) |
| 921 |
{
|
| 922 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
| 923 |
|
| 924 |
return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA);
|
| 925 |
} |
| 926 |
|
| 927 |
static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign) |
| 928 |
{
|
| 929 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
| 930 |
|
| 931 |
/* Stop using the generic ioeventfd, we are doing eventfd handling
|
| 932 |
* ourselves below */
|
| 933 |
dev->ioeventfd_disabled = assign; |
| 934 |
if (assign) {
|
| 935 |
virtio_ccw_stop_ioeventfd(dev); |
| 936 |
} |
| 937 |
return virtio_ccw_set_guest2host_notifier(dev, n, assign, false); |
| 938 |
} |
| 939 |
|
| 940 |
static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, |
| 941 |
bool assign, bool with_irqfd) |
| 942 |
{
|
| 943 |
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); |
| 944 |
VirtQueue *vq = virtio_get_queue(vdev, n); |
| 945 |
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); |
| 946 |
VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); |
| 947 |
|
| 948 |
if (assign) {
|
| 949 |
int r = event_notifier_init(notifier, 0); |
| 950 |
|
| 951 |
if (r < 0) { |
| 952 |
return r;
|
| 953 |
} |
| 954 |
virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
|
| 955 |
/* We do not support irqfd for classic I/O interrupts, because the
|
| 956 |
* classic interrupts are intermixed with the subchannel status, that
|
| 957 |
* is queried with test subchannel. We want to use vhost, though.
|
| 958 |
* Lets make sure to have vhost running and wire up the irq fd to
|
| 959 |
* land in qemu (and only the irq fd) in this code.
|
| 960 |
*/
|
| 961 |
if (k->guest_notifier_mask) {
|
| 962 |
k->guest_notifier_mask(vdev, n, false);
|
| 963 |
} |
| 964 |
/* get lost events and re-inject */
|
| 965 |
if (k->guest_notifier_pending &&
|
| 966 |
k->guest_notifier_pending(vdev, n)) {
|
| 967 |
event_notifier_set(notifier); |
| 968 |
} |
| 969 |
} else {
|
| 970 |
if (k->guest_notifier_mask) {
|
| 971 |
k->guest_notifier_mask(vdev, n, true);
|
| 972 |
} |
| 973 |
virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
|
| 974 |
event_notifier_cleanup(notifier); |
| 975 |
} |
| 976 |
return 0; |
| 977 |
} |
| 978 |
|
| 979 |
static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, |
| 980 |
bool assigned)
|
| 981 |
{
|
| 982 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
| 983 |
VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); |
| 984 |
int r, n;
|
| 985 |
|
| 986 |
for (n = 0; n < nvqs; n++) { |
| 987 |
if (!virtio_queue_get_num(vdev, n)) {
|
| 988 |
break;
|
| 989 |
} |
| 990 |
/* false -> true, as soon as irqfd works */
|
| 991 |
r = virtio_ccw_set_guest_notifier(dev, n, assigned, false);
|
| 992 |
if (r < 0) { |
| 993 |
goto assign_error;
|
| 994 |
} |
| 995 |
} |
| 996 |
return 0; |
| 997 |
|
| 998 |
assign_error:
|
| 999 |
while (--n >= 0) { |
| 1000 |
virtio_ccw_set_guest_notifier(dev, n, !assigned, false);
|
| 1001 |
} |
| 1002 |
return r;
|
| 1003 |
} |
| 1004 |
|
| 1005 |
/**************** Virtio-ccw Bus Device Descriptions *******************/
|
| 1006 |
|
| 1007 |
static Property virtio_ccw_net_properties[] = {
|
| 1008 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
| 1009 |
DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]),
|
| 1010 |
DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetCcw, vdev.net_conf), |
| 1011 |
DEFINE_NIC_PROPERTIES(VirtIONetCcw, vdev.nic_conf), |
| 1012 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
| 1013 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
| 1014 |
DEFINE_PROP_END_OF_LIST(), |
| 1015 |
}; |
| 1016 |
|
| 1017 |
static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) |
| 1018 |
{
|
| 1019 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1020 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
| 1021 |
|
| 1022 |
k->init = virtio_ccw_net_init; |
| 1023 |
k->exit = virtio_ccw_exit; |
| 1024 |
dc->reset = virtio_ccw_reset; |
| 1025 |
dc->props = virtio_ccw_net_properties; |
| 1026 |
} |
| 1027 |
|
| 1028 |
static const TypeInfo virtio_ccw_net = { |
| 1029 |
.name = TYPE_VIRTIO_NET_CCW, |
| 1030 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
| 1031 |
.instance_size = sizeof(VirtIONetCcw),
|
| 1032 |
.instance_init = virtio_ccw_net_instance_init, |
| 1033 |
.class_init = virtio_ccw_net_class_init, |
| 1034 |
}; |
| 1035 |
|
| 1036 |
static Property virtio_ccw_blk_properties[] = {
|
| 1037 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
| 1038 |
DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
|
| 1039 |
DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkCcw, blk), |
| 1040 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
| 1041 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
| 1042 |
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
|
| 1043 |
DEFINE_PROP_BIT("x-data-plane", VirtIOBlkCcw, blk.data_plane, 0, false), |
| 1044 |
#endif
|
| 1045 |
DEFINE_PROP_END_OF_LIST(), |
| 1046 |
}; |
| 1047 |
|
| 1048 |
static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) |
| 1049 |
{
|
| 1050 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1051 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
| 1052 |
|
| 1053 |
k->init = virtio_ccw_blk_init; |
| 1054 |
k->exit = virtio_ccw_exit; |
| 1055 |
dc->reset = virtio_ccw_reset; |
| 1056 |
dc->props = virtio_ccw_blk_properties; |
| 1057 |
} |
| 1058 |
|
| 1059 |
static const TypeInfo virtio_ccw_blk = { |
| 1060 |
.name = TYPE_VIRTIO_BLK_CCW, |
| 1061 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
| 1062 |
.instance_size = sizeof(VirtIOBlkCcw),
|
| 1063 |
.instance_init = virtio_ccw_blk_instance_init, |
| 1064 |
.class_init = virtio_ccw_blk_class_init, |
| 1065 |
}; |
| 1066 |
|
| 1067 |
static Property virtio_ccw_serial_properties[] = {
|
| 1068 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
| 1069 |
DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtioSerialCcw, vdev.serial), |
| 1070 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
| 1071 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
| 1072 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
| 1073 |
DEFINE_PROP_END_OF_LIST(), |
| 1074 |
}; |
| 1075 |
|
| 1076 |
static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) |
| 1077 |
{
|
| 1078 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1079 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
| 1080 |
|
| 1081 |
k->init = virtio_ccw_serial_init; |
| 1082 |
k->exit = virtio_ccw_exit; |
| 1083 |
dc->reset = virtio_ccw_reset; |
| 1084 |
dc->props = virtio_ccw_serial_properties; |
| 1085 |
} |
| 1086 |
|
| 1087 |
static const TypeInfo virtio_ccw_serial = { |
| 1088 |
.name = TYPE_VIRTIO_SERIAL_CCW, |
| 1089 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
| 1090 |
.instance_size = sizeof(VirtioSerialCcw),
|
| 1091 |
.instance_init = virtio_ccw_serial_instance_init, |
| 1092 |
.class_init = virtio_ccw_serial_class_init, |
| 1093 |
}; |
| 1094 |
|
| 1095 |
static Property virtio_ccw_balloon_properties[] = {
|
| 1096 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
| 1097 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
| 1098 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
| 1099 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
| 1100 |
DEFINE_PROP_END_OF_LIST(), |
| 1101 |
}; |
| 1102 |
|
| 1103 |
static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) |
| 1104 |
{
|
| 1105 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1106 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
| 1107 |
|
| 1108 |
k->init = virtio_ccw_balloon_init; |
| 1109 |
k->exit = virtio_ccw_exit; |
| 1110 |
dc->reset = virtio_ccw_reset; |
| 1111 |
dc->props = virtio_ccw_balloon_properties; |
| 1112 |
} |
| 1113 |
|
| 1114 |
static const TypeInfo virtio_ccw_balloon = { |
| 1115 |
.name = TYPE_VIRTIO_BALLOON_CCW, |
| 1116 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
| 1117 |
.instance_size = sizeof(VirtIOBalloonCcw),
|
| 1118 |
.instance_init = virtio_ccw_balloon_instance_init, |
| 1119 |
.class_init = virtio_ccw_balloon_class_init, |
| 1120 |
}; |
| 1121 |
|
| 1122 |
static Property virtio_ccw_scsi_properties[] = {
|
| 1123 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
| 1124 |
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), |
| 1125 |
DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]),
|
| 1126 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
| 1127 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
| 1128 |
DEFINE_PROP_END_OF_LIST(), |
| 1129 |
}; |
| 1130 |
|
| 1131 |
static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) |
| 1132 |
{
|
| 1133 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1134 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
| 1135 |
|
| 1136 |
k->init = virtio_ccw_scsi_init; |
| 1137 |
k->exit = virtio_ccw_exit; |
| 1138 |
dc->reset = virtio_ccw_reset; |
| 1139 |
dc->props = virtio_ccw_scsi_properties; |
| 1140 |
} |
| 1141 |
|
| 1142 |
static const TypeInfo virtio_ccw_scsi = { |
| 1143 |
.name = TYPE_VIRTIO_SCSI_CCW, |
| 1144 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
| 1145 |
.instance_size = sizeof(VirtIOSCSICcw),
|
| 1146 |
.instance_init = virtio_ccw_scsi_instance_init, |
| 1147 |
.class_init = virtio_ccw_scsi_class_init, |
| 1148 |
}; |
| 1149 |
|
| 1150 |
#ifdef CONFIG_VHOST_SCSI
|
| 1151 |
static Property vhost_ccw_scsi_properties[] = {
|
| 1152 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
| 1153 |
DEFINE_VHOST_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), |
| 1154 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
| 1155 |
DEFINE_PROP_END_OF_LIST(), |
| 1156 |
}; |
| 1157 |
|
| 1158 |
static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) |
| 1159 |
{
|
| 1160 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1161 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
| 1162 |
|
| 1163 |
k->init = vhost_ccw_scsi_init; |
| 1164 |
k->exit = virtio_ccw_exit; |
| 1165 |
dc->reset = virtio_ccw_reset; |
| 1166 |
dc->props = vhost_ccw_scsi_properties; |
| 1167 |
} |
| 1168 |
|
| 1169 |
static const TypeInfo vhost_ccw_scsi = { |
| 1170 |
.name = TYPE_VHOST_SCSI_CCW, |
| 1171 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
| 1172 |
.instance_size = sizeof(VirtIOSCSICcw),
|
| 1173 |
.instance_init = vhost_ccw_scsi_instance_init, |
| 1174 |
.class_init = vhost_ccw_scsi_class_init, |
| 1175 |
}; |
| 1176 |
#endif
|
| 1177 |
|
| 1178 |
static void virtio_ccw_rng_instance_init(Object *obj) |
| 1179 |
{
|
| 1180 |
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); |
| 1181 |
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG);
|
| 1182 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 1183 |
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
|
| 1184 |
(Object **)&dev->vdev.conf.rng, NULL);
|
| 1185 |
} |
| 1186 |
|
| 1187 |
static Property virtio_ccw_rng_properties[] = {
|
| 1188 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
| 1189 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
| 1190 |
DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGCcw, vdev.conf), |
| 1191 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
| 1192 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
| 1193 |
DEFINE_PROP_END_OF_LIST(), |
| 1194 |
}; |
| 1195 |
|
| 1196 |
static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) |
| 1197 |
{
|
| 1198 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1199 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
| 1200 |
|
| 1201 |
k->init = virtio_ccw_rng_init; |
| 1202 |
k->exit = virtio_ccw_exit; |
| 1203 |
dc->reset = virtio_ccw_reset; |
| 1204 |
dc->props = virtio_ccw_rng_properties; |
| 1205 |
} |
| 1206 |
|
| 1207 |
static const TypeInfo virtio_ccw_rng = { |
| 1208 |
.name = TYPE_VIRTIO_RNG_CCW, |
| 1209 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
| 1210 |
.instance_size = sizeof(VirtIORNGCcw),
|
| 1211 |
.instance_init = virtio_ccw_rng_instance_init, |
| 1212 |
.class_init = virtio_ccw_rng_class_init, |
| 1213 |
}; |
| 1214 |
|
| 1215 |
static int virtio_ccw_busdev_init(DeviceState *dev) |
| 1216 |
{
|
| 1217 |
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
| 1218 |
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); |
| 1219 |
|
| 1220 |
virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
|
| 1221 |
|
| 1222 |
return _info->init(_dev);
|
| 1223 |
} |
| 1224 |
|
| 1225 |
static int virtio_ccw_busdev_exit(DeviceState *dev) |
| 1226 |
{
|
| 1227 |
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
| 1228 |
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); |
| 1229 |
|
| 1230 |
return _info->exit(_dev);
|
| 1231 |
} |
| 1232 |
|
| 1233 |
static int virtio_ccw_busdev_unplug(DeviceState *dev) |
| 1234 |
{
|
| 1235 |
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
| 1236 |
SubchDev *sch = _dev->sch; |
| 1237 |
|
| 1238 |
virtio_ccw_stop_ioeventfd(_dev); |
| 1239 |
|
| 1240 |
/*
|
| 1241 |
* We should arrive here only for device_del, since we don't support
|
| 1242 |
* direct hot(un)plug of channels, but only through virtio.
|
| 1243 |
*/
|
| 1244 |
assert(sch != NULL);
|
| 1245 |
/* Subchannel is now disabled and no longer valid. */
|
| 1246 |
sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | |
| 1247 |
PMCW_FLAGS_MASK_DNV); |
| 1248 |
|
| 1249 |
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); |
| 1250 |
|
| 1251 |
object_unparent(OBJECT(dev)); |
| 1252 |
return 0; |
| 1253 |
} |
| 1254 |
|
| 1255 |
static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) |
| 1256 |
{
|
| 1257 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1258 |
|
| 1259 |
dc->init = virtio_ccw_busdev_init; |
| 1260 |
dc->exit = virtio_ccw_busdev_exit; |
| 1261 |
dc->unplug = virtio_ccw_busdev_unplug; |
| 1262 |
dc->bus_type = TYPE_VIRTUAL_CSS_BUS; |
| 1263 |
|
| 1264 |
} |
| 1265 |
|
| 1266 |
static const TypeInfo virtio_ccw_device_info = { |
| 1267 |
.name = TYPE_VIRTIO_CCW_DEVICE, |
| 1268 |
.parent = TYPE_DEVICE, |
| 1269 |
.instance_size = sizeof(VirtioCcwDevice),
|
| 1270 |
.class_init = virtio_ccw_device_class_init, |
| 1271 |
.class_size = sizeof(VirtIOCCWDeviceClass),
|
| 1272 |
.abstract = true,
|
| 1273 |
}; |
| 1274 |
|
| 1275 |
/***************** Virtual-css Bus Bridge Device ********************/
|
| 1276 |
/* Only required to have the virtio bus as child in the system bus */
|
| 1277 |
|
| 1278 |
static int virtual_css_bridge_init(SysBusDevice *dev) |
| 1279 |
{
|
| 1280 |
/* nothing */
|
| 1281 |
return 0; |
| 1282 |
} |
| 1283 |
|
| 1284 |
static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) |
| 1285 |
{
|
| 1286 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1287 |
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
| 1288 |
|
| 1289 |
k->init = virtual_css_bridge_init; |
| 1290 |
dc->no_user = 1;
|
| 1291 |
} |
| 1292 |
|
| 1293 |
static const TypeInfo virtual_css_bridge_info = { |
| 1294 |
.name = "virtual-css-bridge",
|
| 1295 |
.parent = TYPE_SYS_BUS_DEVICE, |
| 1296 |
.instance_size = sizeof(SysBusDevice),
|
| 1297 |
.class_init = virtual_css_bridge_class_init, |
| 1298 |
}; |
| 1299 |
|
| 1300 |
/* virtio-ccw-bus */
|
| 1301 |
|
| 1302 |
static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, |
| 1303 |
VirtioCcwDevice *dev) |
| 1304 |
{
|
| 1305 |
DeviceState *qdev = DEVICE(dev); |
| 1306 |
BusState *qbus; |
| 1307 |
char virtio_bus_name[] = "virtio-bus"; |
| 1308 |
|
| 1309 |
qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS, |
| 1310 |
qdev, virtio_bus_name); |
| 1311 |
qbus = BUS(bus); |
| 1312 |
qbus->allow_hotplug = 1;
|
| 1313 |
} |
| 1314 |
|
| 1315 |
static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) |
| 1316 |
{
|
| 1317 |
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); |
| 1318 |
BusClass *bus_class = BUS_CLASS(klass); |
| 1319 |
|
| 1320 |
bus_class->max_dev = 1;
|
| 1321 |
k->notify = virtio_ccw_notify; |
| 1322 |
k->get_features = virtio_ccw_get_features; |
| 1323 |
k->vmstate_change = virtio_ccw_vmstate_change; |
| 1324 |
k->query_guest_notifiers = virtio_ccw_query_guest_notifiers; |
| 1325 |
k->set_host_notifier = virtio_ccw_set_host_notifier; |
| 1326 |
k->set_guest_notifiers = virtio_ccw_set_guest_notifiers; |
| 1327 |
} |
| 1328 |
|
| 1329 |
static const TypeInfo virtio_ccw_bus_info = { |
| 1330 |
.name = TYPE_VIRTIO_CCW_BUS, |
| 1331 |
.parent = TYPE_VIRTIO_BUS, |
| 1332 |
.instance_size = sizeof(VirtioCcwBusState),
|
| 1333 |
.class_init = virtio_ccw_bus_class_init, |
| 1334 |
}; |
| 1335 |
|
| 1336 |
static void virtio_ccw_register(void) |
| 1337 |
{
|
| 1338 |
type_register_static(&virtio_ccw_bus_info); |
| 1339 |
type_register_static(&virtual_css_bus_info); |
| 1340 |
type_register_static(&virtio_ccw_device_info); |
| 1341 |
type_register_static(&virtio_ccw_serial); |
| 1342 |
type_register_static(&virtio_ccw_blk); |
| 1343 |
type_register_static(&virtio_ccw_net); |
| 1344 |
type_register_static(&virtio_ccw_balloon); |
| 1345 |
type_register_static(&virtio_ccw_scsi); |
| 1346 |
#ifdef CONFIG_VHOST_SCSI
|
| 1347 |
type_register_static(&vhost_ccw_scsi); |
| 1348 |
#endif
|
| 1349 |
type_register_static(&virtio_ccw_rng); |
| 1350 |
type_register_static(&virtual_css_bridge_info); |
| 1351 |
} |
| 1352 |
|
| 1353 |
type_init(virtio_ccw_register) |