root / hw / s390x / virtio-ccw.c @ cc3ac9c4
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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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#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 void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev); |
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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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/* we dont traverse ourself, return 0 */
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return 0; |
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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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if (sch->driver_data) {
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vdev = ((VirtioCcwDevice *)sch->driver_data)->vdev; |
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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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VirtQueue *vq = virtio_get_queue(dev->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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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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for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
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if (!virtio_queue_get_num(dev->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(dev->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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int n, r;
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if (!dev->ioeventfd_started) {
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return;
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} |
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for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
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if (!virtio_queue_get_num(dev->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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/* 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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VirtioCcwDevice *dev = sch->driver_data; |
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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 (!dev) {
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return -EINVAL;
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} |
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virtio_queue_set_addr(dev->vdev, index, addr); |
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if (!addr) {
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virtio_queue_set_vector(dev->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(dev->vdev, index) > num) {
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return -EINVAL;
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} |
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virtio_queue_set_vector(dev->vdev, index, index); |
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} |
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/* tell notify handler in case of config change */
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dev->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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bool check_len;
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int len;
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hwaddr hw_len; |
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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(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(dev->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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} |
283 |
} 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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} |
288 |
if (!ccw.cda) {
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ret = -EFAULT; |
290 |
} 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]; |
294 |
} 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); |
299 |
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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} |
309 |
} else if (ccw.count < sizeof(features)) { |
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/* Can't execute command. */
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ret = -EINVAL; |
312 |
break;
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} |
314 |
if (!ccw.cda) {
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ret = -EFAULT; |
316 |
} else {
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features.index = ldub_phys(ccw.cda + sizeof(features.features));
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features.features = ldl_le_phys(ccw.cda); |
319 |
if (features.index < ARRAY_SIZE(dev->host_features)) {
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virtio_bus_set_vdev_features(&dev->bus, features.features); |
321 |
dev->vdev->guest_features = features.features; |
322 |
} 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); |
330 |
/* XXX: do a unit check here? */
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} |
332 |
} |
333 |
sch->curr_status.scsw.count = ccw.count - sizeof(features);
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ret = 0;
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} |
336 |
break;
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case CCW_CMD_READ_CONF:
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if (check_len) {
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339 |
if (ccw.count > dev->vdev->config_len) {
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340 |
ret = -EINVAL; |
341 |
break;
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} |
343 |
} |
344 |
len = MIN(ccw.count, dev->vdev->config_len); |
345 |
if (!ccw.cda) {
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ret = -EFAULT; |
347 |
} else {
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348 |
virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config); |
349 |
/* XXX config space endianness */
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350 |
cpu_physical_memory_write(ccw.cda, dev->vdev->config, len); |
351 |
sch->curr_status.scsw.count = ccw.count - len; |
352 |
ret = 0;
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} |
354 |
break;
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355 |
case CCW_CMD_WRITE_CONF:
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356 |
if (check_len) {
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357 |
if (ccw.count > dev->vdev->config_len) {
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358 |
ret = -EINVAL; |
359 |
break;
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360 |
} |
361 |
} |
362 |
len = MIN(ccw.count, dev->vdev->config_len); |
363 |
hw_len = len; |
364 |
if (!ccw.cda) {
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365 |
ret = -EFAULT; |
366 |
} else {
|
367 |
config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
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368 |
if (!config) {
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369 |
ret = -EFAULT; |
370 |
} else {
|
371 |
len = hw_len; |
372 |
/* XXX config space endianness */
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373 |
memcpy(dev->vdev->config, config, len); |
374 |
cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
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375 |
virtio_bus_set_vdev_config(&dev->bus, dev->vdev->config); |
376 |
sch->curr_status.scsw.count = ccw.count - len; |
377 |
ret = 0;
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378 |
} |
379 |
} |
380 |
break;
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381 |
case CCW_CMD_WRITE_STATUS:
|
382 |
if (check_len) {
|
383 |
if (ccw.count != sizeof(status)) { |
384 |
ret = -EINVAL; |
385 |
break;
|
386 |
} |
387 |
} else if (ccw.count < sizeof(status)) { |
388 |
/* Can't execute command. */
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389 |
ret = -EINVAL; |
390 |
break;
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391 |
} |
392 |
if (!ccw.cda) {
|
393 |
ret = -EFAULT; |
394 |
} else {
|
395 |
status = ldub_phys(ccw.cda); |
396 |
if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
|
397 |
virtio_ccw_stop_ioeventfd(dev); |
398 |
} |
399 |
virtio_set_status(dev->vdev, status); |
400 |
if (dev->vdev->status == 0) { |
401 |
virtio_reset(dev->vdev); |
402 |
} |
403 |
if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
|
404 |
virtio_ccw_start_ioeventfd(dev); |
405 |
} |
406 |
sch->curr_status.scsw.count = ccw.count - sizeof(status);
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407 |
ret = 0;
|
408 |
} |
409 |
break;
|
410 |
case CCW_CMD_SET_IND:
|
411 |
if (check_len) {
|
412 |
if (ccw.count != sizeof(indicators)) { |
413 |
ret = -EINVAL; |
414 |
break;
|
415 |
} |
416 |
} else if (ccw.count < sizeof(indicators)) { |
417 |
/* Can't execute command. */
|
418 |
ret = -EINVAL; |
419 |
break;
|
420 |
} |
421 |
if (!ccw.cda) {
|
422 |
ret = -EFAULT; |
423 |
} else {
|
424 |
indicators = ldq_phys(ccw.cda); |
425 |
dev->indicators = indicators; |
426 |
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
|
427 |
ret = 0;
|
428 |
} |
429 |
break;
|
430 |
case CCW_CMD_SET_CONF_IND:
|
431 |
if (check_len) {
|
432 |
if (ccw.count != sizeof(indicators)) { |
433 |
ret = -EINVAL; |
434 |
break;
|
435 |
} |
436 |
} else if (ccw.count < sizeof(indicators)) { |
437 |
/* Can't execute command. */
|
438 |
ret = -EINVAL; |
439 |
break;
|
440 |
} |
441 |
if (!ccw.cda) {
|
442 |
ret = -EFAULT; |
443 |
} else {
|
444 |
indicators = ldq_phys(ccw.cda); |
445 |
dev->indicators2 = indicators; |
446 |
sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
|
447 |
ret = 0;
|
448 |
} |
449 |
break;
|
450 |
case CCW_CMD_READ_VQ_CONF:
|
451 |
if (check_len) {
|
452 |
if (ccw.count != sizeof(vq_config)) { |
453 |
ret = -EINVAL; |
454 |
break;
|
455 |
} |
456 |
} else if (ccw.count < sizeof(vq_config)) { |
457 |
/* Can't execute command. */
|
458 |
ret = -EINVAL; |
459 |
break;
|
460 |
} |
461 |
if (!ccw.cda) {
|
462 |
ret = -EFAULT; |
463 |
} else {
|
464 |
vq_config.index = lduw_phys(ccw.cda); |
465 |
vq_config.num_max = virtio_queue_get_num(dev->vdev, |
466 |
vq_config.index); |
467 |
stw_phys(ccw.cda + sizeof(vq_config.index), vq_config.num_max);
|
468 |
sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
|
469 |
ret = 0;
|
470 |
} |
471 |
break;
|
472 |
default:
|
473 |
ret = -ENOSYS; |
474 |
break;
|
475 |
} |
476 |
return ret;
|
477 |
} |
478 |
|
479 |
static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev) |
480 |
{ |
481 |
unsigned int cssid = 0; |
482 |
unsigned int ssid = 0; |
483 |
unsigned int schid; |
484 |
unsigned int devno; |
485 |
bool have_devno = false; |
486 |
bool found = false; |
487 |
SubchDev *sch; |
488 |
int ret;
|
489 |
int num;
|
490 |
DeviceState *parent = DEVICE(dev); |
491 |
|
492 |
sch = g_malloc0(sizeof(SubchDev));
|
493 |
|
494 |
sch->driver_data = dev; |
495 |
dev->sch = sch; |
496 |
|
497 |
dev->vdev = vdev; |
498 |
dev->indicators = 0;
|
499 |
|
500 |
/* Initialize subchannel structure. */
|
501 |
sch->channel_prog = 0x0;
|
502 |
sch->last_cmd_valid = false;
|
503 |
sch->orb = NULL;
|
504 |
/*
|
505 |
* Use a device number if provided. Otherwise, fall back to subchannel
|
506 |
* number.
|
507 |
*/
|
508 |
if (dev->bus_id) {
|
509 |
num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno);
|
510 |
if (num == 3) { |
511 |
if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) {
|
512 |
ret = -EINVAL; |
513 |
error_report("Invalid cssid or ssid: cssid %x, ssid %x",
|
514 |
cssid, ssid); |
515 |
goto out_err;
|
516 |
} |
517 |
/* Enforce use of virtual cssid. */
|
518 |
if (cssid != VIRTUAL_CSSID) {
|
519 |
ret = -EINVAL; |
520 |
error_report("cssid %x not valid for virtio devices", cssid);
|
521 |
goto out_err;
|
522 |
} |
523 |
if (css_devno_used(cssid, ssid, devno)) {
|
524 |
ret = -EEXIST; |
525 |
error_report("Device %x.%x.%04x already exists", cssid, ssid,
|
526 |
devno); |
527 |
goto out_err;
|
528 |
} |
529 |
sch->cssid = cssid; |
530 |
sch->ssid = ssid; |
531 |
sch->devno = devno; |
532 |
have_devno = true;
|
533 |
} else {
|
534 |
ret = -EINVAL; |
535 |
error_report("Malformed devno parameter '%s'", dev->bus_id);
|
536 |
goto out_err;
|
537 |
} |
538 |
} |
539 |
|
540 |
/* Find the next free id. */
|
541 |
if (have_devno) {
|
542 |
for (schid = 0; schid <= MAX_SCHID; schid++) { |
543 |
if (!css_find_subch(1, cssid, ssid, schid)) { |
544 |
sch->schid = schid; |
545 |
css_subch_assign(cssid, ssid, schid, devno, sch); |
546 |
found = true;
|
547 |
break;
|
548 |
} |
549 |
} |
550 |
if (!found) {
|
551 |
ret = -ENODEV; |
552 |
error_report("No free subchannel found for %x.%x.%04x", cssid, ssid,
|
553 |
devno); |
554 |
goto out_err;
|
555 |
} |
556 |
trace_virtio_ccw_new_device(cssid, ssid, schid, devno, |
557 |
"user-configured");
|
558 |
} else {
|
559 |
cssid = VIRTUAL_CSSID; |
560 |
for (ssid = 0; ssid <= MAX_SSID; ssid++) { |
561 |
for (schid = 0; schid <= MAX_SCHID; schid++) { |
562 |
if (!css_find_subch(1, cssid, ssid, schid)) { |
563 |
sch->cssid = cssid; |
564 |
sch->ssid = ssid; |
565 |
sch->schid = schid; |
566 |
devno = schid; |
567 |
/*
|
568 |
* If the devno is already taken, look further in this
|
569 |
* subchannel set.
|
570 |
*/
|
571 |
while (css_devno_used(cssid, ssid, devno)) {
|
572 |
if (devno == MAX_SCHID) {
|
573 |
devno = 0;
|
574 |
} else if (devno == schid - 1) { |
575 |
ret = -ENODEV; |
576 |
error_report("No free devno found");
|
577 |
goto out_err;
|
578 |
} else {
|
579 |
devno++; |
580 |
} |
581 |
} |
582 |
sch->devno = devno; |
583 |
css_subch_assign(cssid, ssid, schid, devno, sch); |
584 |
found = true;
|
585 |
break;
|
586 |
} |
587 |
} |
588 |
if (found) {
|
589 |
break;
|
590 |
} |
591 |
} |
592 |
if (!found) {
|
593 |
ret = -ENODEV; |
594 |
error_report("Virtual channel subsystem is full!");
|
595 |
goto out_err;
|
596 |
} |
597 |
trace_virtio_ccw_new_device(cssid, ssid, schid, devno, |
598 |
"auto-configured");
|
599 |
} |
600 |
|
601 |
/* Build initial schib. */
|
602 |
css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
|
603 |
|
604 |
sch->ccw_cb = virtio_ccw_cb; |
605 |
|
606 |
/* Build senseid data. */
|
607 |
memset(&sch->id, 0, sizeof(SenseId)); |
608 |
sch->id.reserved = 0xff;
|
609 |
sch->id.cu_type = VIRTIO_CCW_CU_TYPE; |
610 |
sch->id.cu_model = dev->vdev->device_id; |
611 |
|
612 |
/* Only the first 32 feature bits are used. */
|
613 |
dev->host_features[0] = virtio_bus_get_vdev_features(&dev->bus,
|
614 |
dev->host_features[0]);
|
615 |
|
616 |
dev->host_features[0] |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; |
617 |
dev->host_features[0] |= 0x1 << VIRTIO_F_BAD_FEATURE; |
618 |
|
619 |
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, |
620 |
parent->hotplugged, 1);
|
621 |
return 0; |
622 |
|
623 |
out_err:
|
624 |
dev->sch = NULL;
|
625 |
g_free(sch); |
626 |
return ret;
|
627 |
} |
628 |
|
629 |
static int virtio_ccw_exit(VirtioCcwDevice *dev) |
630 |
{ |
631 |
SubchDev *sch = dev->sch; |
632 |
|
633 |
virtio_ccw_stop_ioeventfd(dev); |
634 |
if (sch) {
|
635 |
css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
|
636 |
g_free(sch); |
637 |
} |
638 |
dev->indicators = 0;
|
639 |
return 0; |
640 |
} |
641 |
|
642 |
static int virtio_ccw_net_init(VirtioCcwDevice *ccw_dev) |
643 |
{ |
644 |
DeviceState *qdev = DEVICE(ccw_dev); |
645 |
VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); |
646 |
DeviceState *vdev = DEVICE(&dev->vdev); |
647 |
|
648 |
virtio_net_set_config_size(&dev->vdev, ccw_dev->host_features[0]);
|
649 |
virtio_net_set_netclient_name(&dev->vdev, qdev->id, |
650 |
object_get_typename(OBJECT(qdev))); |
651 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
652 |
if (qdev_init(vdev) < 0) { |
653 |
return -1; |
654 |
} |
655 |
|
656 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
657 |
} |
658 |
|
659 |
static void virtio_ccw_net_instance_init(Object *obj) |
660 |
{ |
661 |
VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); |
662 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_NET); |
663 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
664 |
} |
665 |
|
666 |
static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev) |
667 |
{ |
668 |
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); |
669 |
DeviceState *vdev = DEVICE(&dev->vdev); |
670 |
virtio_blk_set_conf(vdev, &(dev->blk)); |
671 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
672 |
if (qdev_init(vdev) < 0) { |
673 |
return -1; |
674 |
} |
675 |
|
676 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
677 |
} |
678 |
|
679 |
static void virtio_ccw_blk_instance_init(Object *obj) |
680 |
{ |
681 |
VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); |
682 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK); |
683 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
684 |
} |
685 |
|
686 |
static int virtio_ccw_serial_init(VirtioCcwDevice *ccw_dev) |
687 |
{ |
688 |
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); |
689 |
DeviceState *vdev = DEVICE(&dev->vdev); |
690 |
DeviceState *proxy = DEVICE(ccw_dev); |
691 |
char *bus_name;
|
692 |
|
693 |
/*
|
694 |
* For command line compatibility, this sets the virtio-serial-device bus
|
695 |
* name as before.
|
696 |
*/
|
697 |
if (proxy->id) {
|
698 |
bus_name = g_strdup_printf("%s.0", proxy->id);
|
699 |
virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); |
700 |
g_free(bus_name); |
701 |
} |
702 |
|
703 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
704 |
if (qdev_init(vdev) < 0) { |
705 |
return -1; |
706 |
} |
707 |
|
708 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
709 |
} |
710 |
|
711 |
|
712 |
static void virtio_ccw_serial_instance_init(Object *obj) |
713 |
{ |
714 |
VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); |
715 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL); |
716 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
717 |
} |
718 |
|
719 |
static int virtio_ccw_balloon_init(VirtioCcwDevice *ccw_dev) |
720 |
{ |
721 |
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); |
722 |
DeviceState *vdev = DEVICE(&dev->vdev); |
723 |
|
724 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
725 |
if (qdev_init(vdev) < 0) { |
726 |
return -1; |
727 |
} |
728 |
|
729 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
730 |
} |
731 |
|
732 |
static void balloon_ccw_stats_get_all(Object *obj, struct Visitor *v, |
733 |
void *opaque, const char *name, |
734 |
Error **errp) |
735 |
{ |
736 |
VirtIOBalloonCcw *dev = opaque; |
737 |
object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp);
|
738 |
} |
739 |
|
740 |
static void balloon_ccw_stats_get_poll_interval(Object *obj, struct Visitor *v, |
741 |
void *opaque, const char *name, |
742 |
Error **errp) |
743 |
{ |
744 |
VirtIOBalloonCcw *dev = opaque; |
745 |
object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
746 |
errp); |
747 |
} |
748 |
|
749 |
static void balloon_ccw_stats_set_poll_interval(Object *obj, struct Visitor *v, |
750 |
void *opaque, const char *name, |
751 |
Error **errp) |
752 |
{ |
753 |
VirtIOBalloonCcw *dev = opaque; |
754 |
object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
755 |
errp); |
756 |
} |
757 |
|
758 |
static void virtio_ccw_balloon_instance_init(Object *obj) |
759 |
{ |
760 |
VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); |
761 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BALLOON); |
762 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
763 |
|
764 |
object_property_add(obj, "guest-stats", "guest statistics", |
765 |
balloon_ccw_stats_get_all, NULL, NULL, dev, NULL); |
766 |
|
767 |
object_property_add(obj, "guest-stats-polling-interval", "int", |
768 |
balloon_ccw_stats_get_poll_interval, |
769 |
balloon_ccw_stats_set_poll_interval, |
770 |
NULL, dev, NULL); |
771 |
} |
772 |
|
773 |
static int virtio_ccw_scsi_init(VirtioCcwDevice *ccw_dev) |
774 |
{ |
775 |
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); |
776 |
DeviceState *vdev = DEVICE(&dev->vdev); |
777 |
DeviceState *qdev = DEVICE(ccw_dev); |
778 |
char *bus_name;
|
779 |
|
780 |
/*
|
781 |
* For command line compatibility, this sets the virtio-scsi-device bus
|
782 |
* name as before.
|
783 |
*/
|
784 |
if (qdev->id) {
|
785 |
bus_name = g_strdup_printf("%s.0", qdev->id);
|
786 |
virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); |
787 |
g_free(bus_name); |
788 |
} |
789 |
|
790 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
791 |
if (qdev_init(vdev) < 0) { |
792 |
return -1; |
793 |
} |
794 |
|
795 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
796 |
} |
797 |
|
798 |
static void virtio_ccw_scsi_instance_init(Object *obj) |
799 |
{ |
800 |
VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); |
801 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI); |
802 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
803 |
} |
804 |
|
805 |
#ifdef CONFIG_VHOST_SCSI
|
806 |
static int vhost_ccw_scsi_init(VirtioCcwDevice *ccw_dev) |
807 |
{ |
808 |
VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); |
809 |
DeviceState *vdev = DEVICE(&dev->vdev); |
810 |
|
811 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
812 |
if (qdev_init(vdev) < 0) { |
813 |
return -1; |
814 |
} |
815 |
|
816 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
817 |
} |
818 |
|
819 |
static void vhost_ccw_scsi_instance_init(Object *obj) |
820 |
{ |
821 |
VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); |
822 |
object_initialize(OBJECT(&dev->vdev), TYPE_VHOST_SCSI); |
823 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
824 |
} |
825 |
#endif
|
826 |
|
827 |
static int virtio_ccw_rng_init(VirtioCcwDevice *ccw_dev) |
828 |
{ |
829 |
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); |
830 |
DeviceState *vdev = DEVICE(&dev->vdev); |
831 |
|
832 |
qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); |
833 |
if (qdev_init(vdev) < 0) { |
834 |
return -1; |
835 |
} |
836 |
|
837 |
object_property_set_link(OBJECT(dev), |
838 |
OBJECT(dev->vdev.conf.rng), "rng",
|
839 |
NULL);
|
840 |
|
841 |
return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
|
842 |
} |
843 |
|
844 |
/* DeviceState to VirtioCcwDevice. Note: used on datapath,
|
845 |
* be careful and test performance if you change this.
|
846 |
*/
|
847 |
static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) |
848 |
{ |
849 |
return container_of(d, VirtioCcwDevice, parent_obj);
|
850 |
} |
851 |
|
852 |
static void virtio_ccw_notify(DeviceState *d, uint16_t vector) |
853 |
{ |
854 |
VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); |
855 |
SubchDev *sch = dev->sch; |
856 |
uint64_t indicators; |
857 |
|
858 |
if (vector >= 128) { |
859 |
return;
|
860 |
} |
861 |
|
862 |
if (vector < VIRTIO_PCI_QUEUE_MAX) {
|
863 |
if (!dev->indicators) {
|
864 |
return;
|
865 |
} |
866 |
indicators = ldq_phys(dev->indicators); |
867 |
indicators |= 1ULL << vector;
|
868 |
stq_phys(dev->indicators, indicators); |
869 |
} else {
|
870 |
if (!dev->indicators2) {
|
871 |
return;
|
872 |
} |
873 |
vector = 0;
|
874 |
indicators = ldq_phys(dev->indicators2); |
875 |
indicators |= 1ULL << vector;
|
876 |
stq_phys(dev->indicators2, indicators); |
877 |
} |
878 |
|
879 |
css_conditional_io_interrupt(sch); |
880 |
|
881 |
} |
882 |
|
883 |
static unsigned virtio_ccw_get_features(DeviceState *d) |
884 |
{ |
885 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
886 |
|
887 |
/* Only the first 32 feature bits are used. */
|
888 |
return dev->host_features[0]; |
889 |
} |
890 |
|
891 |
static void virtio_ccw_reset(DeviceState *d) |
892 |
{ |
893 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
894 |
|
895 |
virtio_ccw_stop_ioeventfd(dev); |
896 |
virtio_reset(dev->vdev); |
897 |
css_reset_sch(dev->sch); |
898 |
dev->indicators = 0;
|
899 |
dev->indicators2 = 0;
|
900 |
} |
901 |
|
902 |
static void virtio_ccw_vmstate_change(DeviceState *d, bool running) |
903 |
{ |
904 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
905 |
|
906 |
if (running) {
|
907 |
virtio_ccw_start_ioeventfd(dev); |
908 |
} else {
|
909 |
virtio_ccw_stop_ioeventfd(dev); |
910 |
} |
911 |
} |
912 |
|
913 |
static bool virtio_ccw_query_guest_notifiers(DeviceState *d) |
914 |
{ |
915 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
916 |
|
917 |
return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA);
|
918 |
} |
919 |
|
920 |
static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign) |
921 |
{ |
922 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
923 |
|
924 |
/* Stop using the generic ioeventfd, we are doing eventfd handling
|
925 |
* ourselves below */
|
926 |
dev->ioeventfd_disabled = assign; |
927 |
if (assign) {
|
928 |
virtio_ccw_stop_ioeventfd(dev); |
929 |
} |
930 |
return virtio_ccw_set_guest2host_notifier(dev, n, assign, false); |
931 |
} |
932 |
|
933 |
static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, |
934 |
bool assign, bool with_irqfd) |
935 |
{ |
936 |
VirtQueue *vq = virtio_get_queue(dev->vdev, n); |
937 |
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); |
938 |
VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(dev->vdev); |
939 |
|
940 |
if (assign) {
|
941 |
int r = event_notifier_init(notifier, 0); |
942 |
|
943 |
if (r < 0) { |
944 |
return r;
|
945 |
} |
946 |
virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
|
947 |
/* We do not support irqfd for classic I/O interrupts, because the
|
948 |
* classic interrupts are intermixed with the subchannel status, that
|
949 |
* is queried with test subchannel. We want to use vhost, though.
|
950 |
* Lets make sure to have vhost running and wire up the irq fd to
|
951 |
* land in qemu (and only the irq fd) in this code.
|
952 |
*/
|
953 |
if (k->guest_notifier_mask) {
|
954 |
k->guest_notifier_mask(dev->vdev, n, false);
|
955 |
} |
956 |
/* get lost events and re-inject */
|
957 |
if (k->guest_notifier_pending &&
|
958 |
k->guest_notifier_pending(dev->vdev, n)) { |
959 |
event_notifier_set(notifier); |
960 |
} |
961 |
} else {
|
962 |
if (k->guest_notifier_mask) {
|
963 |
k->guest_notifier_mask(dev->vdev, n, true);
|
964 |
} |
965 |
virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
|
966 |
event_notifier_cleanup(notifier); |
967 |
} |
968 |
return 0; |
969 |
} |
970 |
|
971 |
static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, |
972 |
bool assigned)
|
973 |
{ |
974 |
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); |
975 |
VirtIODevice *vdev = dev->vdev; |
976 |
int r, n;
|
977 |
|
978 |
for (n = 0; n < nvqs; n++) { |
979 |
if (!virtio_queue_get_num(vdev, n)) {
|
980 |
break;
|
981 |
} |
982 |
/* false -> true, as soon as irqfd works */
|
983 |
r = virtio_ccw_set_guest_notifier(dev, n, assigned, false);
|
984 |
if (r < 0) { |
985 |
goto assign_error;
|
986 |
} |
987 |
} |
988 |
return 0; |
989 |
|
990 |
assign_error:
|
991 |
while (--n >= 0) { |
992 |
virtio_ccw_set_guest_notifier(dev, n, !assigned, false);
|
993 |
} |
994 |
return r;
|
995 |
} |
996 |
|
997 |
/**************** Virtio-ccw Bus Device Descriptions *******************/
|
998 |
|
999 |
static Property virtio_ccw_net_properties[] = {
|
1000 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
1001 |
DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]),
|
1002 |
DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetCcw, vdev.net_conf), |
1003 |
DEFINE_NIC_PROPERTIES(VirtIONetCcw, vdev.nic_conf), |
1004 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
1005 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
1006 |
DEFINE_PROP_END_OF_LIST(), |
1007 |
}; |
1008 |
|
1009 |
static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) |
1010 |
{ |
1011 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1012 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
1013 |
|
1014 |
k->init = virtio_ccw_net_init; |
1015 |
k->exit = virtio_ccw_exit; |
1016 |
dc->reset = virtio_ccw_reset; |
1017 |
dc->props = virtio_ccw_net_properties; |
1018 |
} |
1019 |
|
1020 |
static const TypeInfo virtio_ccw_net = { |
1021 |
.name = TYPE_VIRTIO_NET_CCW, |
1022 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
1023 |
.instance_size = sizeof(VirtIONetCcw),
|
1024 |
.instance_init = virtio_ccw_net_instance_init, |
1025 |
.class_init = virtio_ccw_net_class_init, |
1026 |
}; |
1027 |
|
1028 |
static Property virtio_ccw_blk_properties[] = {
|
1029 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
1030 |
DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
|
1031 |
DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkCcw, blk), |
1032 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
1033 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
1034 |
DEFINE_PROP_END_OF_LIST(), |
1035 |
}; |
1036 |
|
1037 |
static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) |
1038 |
{ |
1039 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1040 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
1041 |
|
1042 |
k->init = virtio_ccw_blk_init; |
1043 |
k->exit = virtio_ccw_exit; |
1044 |
dc->reset = virtio_ccw_reset; |
1045 |
dc->props = virtio_ccw_blk_properties; |
1046 |
} |
1047 |
|
1048 |
static const TypeInfo virtio_ccw_blk = { |
1049 |
.name = TYPE_VIRTIO_BLK_CCW, |
1050 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
1051 |
.instance_size = sizeof(VirtIOBlkCcw),
|
1052 |
.instance_init = virtio_ccw_blk_instance_init, |
1053 |
.class_init = virtio_ccw_blk_class_init, |
1054 |
}; |
1055 |
|
1056 |
static Property virtio_ccw_serial_properties[] = {
|
1057 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
1058 |
DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtioSerialCcw, vdev.serial), |
1059 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
1060 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
1061 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
1062 |
DEFINE_PROP_END_OF_LIST(), |
1063 |
}; |
1064 |
|
1065 |
static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) |
1066 |
{ |
1067 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1068 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
1069 |
|
1070 |
k->init = virtio_ccw_serial_init; |
1071 |
k->exit = virtio_ccw_exit; |
1072 |
dc->reset = virtio_ccw_reset; |
1073 |
dc->props = virtio_ccw_serial_properties; |
1074 |
} |
1075 |
|
1076 |
static const TypeInfo virtio_ccw_serial = { |
1077 |
.name = TYPE_VIRTIO_SERIAL_CCW, |
1078 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
1079 |
.instance_size = sizeof(VirtioSerialCcw),
|
1080 |
.instance_init = virtio_ccw_serial_instance_init, |
1081 |
.class_init = virtio_ccw_serial_class_init, |
1082 |
}; |
1083 |
|
1084 |
static Property virtio_ccw_balloon_properties[] = {
|
1085 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
1086 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
1087 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
1088 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
1089 |
DEFINE_PROP_END_OF_LIST(), |
1090 |
}; |
1091 |
|
1092 |
static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) |
1093 |
{ |
1094 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1095 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
1096 |
|
1097 |
k->init = virtio_ccw_balloon_init; |
1098 |
k->exit = virtio_ccw_exit; |
1099 |
dc->reset = virtio_ccw_reset; |
1100 |
dc->props = virtio_ccw_balloon_properties; |
1101 |
} |
1102 |
|
1103 |
static const TypeInfo virtio_ccw_balloon = { |
1104 |
.name = TYPE_VIRTIO_BALLOON_CCW, |
1105 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
1106 |
.instance_size = sizeof(VirtIOBalloonCcw),
|
1107 |
.instance_init = virtio_ccw_balloon_instance_init, |
1108 |
.class_init = virtio_ccw_balloon_class_init, |
1109 |
}; |
1110 |
|
1111 |
static Property virtio_ccw_scsi_properties[] = {
|
1112 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
1113 |
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), |
1114 |
DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]),
|
1115 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
1116 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
1117 |
DEFINE_PROP_END_OF_LIST(), |
1118 |
}; |
1119 |
|
1120 |
static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) |
1121 |
{ |
1122 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1123 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
1124 |
|
1125 |
k->init = virtio_ccw_scsi_init; |
1126 |
k->exit = virtio_ccw_exit; |
1127 |
dc->reset = virtio_ccw_reset; |
1128 |
dc->props = virtio_ccw_scsi_properties; |
1129 |
} |
1130 |
|
1131 |
static const TypeInfo virtio_ccw_scsi = { |
1132 |
.name = TYPE_VIRTIO_SCSI_CCW, |
1133 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
1134 |
.instance_size = sizeof(VirtIOSCSICcw),
|
1135 |
.instance_init = virtio_ccw_scsi_instance_init, |
1136 |
.class_init = virtio_ccw_scsi_class_init, |
1137 |
}; |
1138 |
|
1139 |
#ifdef CONFIG_VHOST_SCSI
|
1140 |
static Property vhost_ccw_scsi_properties[] = {
|
1141 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
1142 |
DEFINE_VHOST_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), |
1143 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
1144 |
DEFINE_PROP_END_OF_LIST(), |
1145 |
}; |
1146 |
|
1147 |
static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) |
1148 |
{ |
1149 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1150 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
1151 |
|
1152 |
k->init = vhost_ccw_scsi_init; |
1153 |
k->exit = virtio_ccw_exit; |
1154 |
dc->reset = virtio_ccw_reset; |
1155 |
dc->props = vhost_ccw_scsi_properties; |
1156 |
} |
1157 |
|
1158 |
static const TypeInfo vhost_ccw_scsi = { |
1159 |
.name = TYPE_VHOST_SCSI_CCW, |
1160 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
1161 |
.instance_size = sizeof(VirtIOSCSICcw),
|
1162 |
.instance_init = vhost_ccw_scsi_instance_init, |
1163 |
.class_init = vhost_ccw_scsi_class_init, |
1164 |
}; |
1165 |
#endif
|
1166 |
|
1167 |
static void virtio_ccw_rng_instance_init(Object *obj) |
1168 |
{ |
1169 |
VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); |
1170 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_RNG); |
1171 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1172 |
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
|
1173 |
(Object **)&dev->vdev.conf.rng, NULL);
|
1174 |
} |
1175 |
|
1176 |
static Property virtio_ccw_rng_properties[] = {
|
1177 |
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
|
1178 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
|
1179 |
DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGCcw, vdev.conf), |
1180 |
DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
|
1181 |
VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
|
1182 |
DEFINE_PROP_END_OF_LIST(), |
1183 |
}; |
1184 |
|
1185 |
static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) |
1186 |
{ |
1187 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1188 |
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); |
1189 |
|
1190 |
k->init = virtio_ccw_rng_init; |
1191 |
k->exit = virtio_ccw_exit; |
1192 |
dc->reset = virtio_ccw_reset; |
1193 |
dc->props = virtio_ccw_rng_properties; |
1194 |
} |
1195 |
|
1196 |
static const TypeInfo virtio_ccw_rng = { |
1197 |
.name = TYPE_VIRTIO_RNG_CCW, |
1198 |
.parent = TYPE_VIRTIO_CCW_DEVICE, |
1199 |
.instance_size = sizeof(VirtIORNGCcw),
|
1200 |
.instance_init = virtio_ccw_rng_instance_init, |
1201 |
.class_init = virtio_ccw_rng_class_init, |
1202 |
}; |
1203 |
|
1204 |
static int virtio_ccw_busdev_init(DeviceState *dev) |
1205 |
{ |
1206 |
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
1207 |
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); |
1208 |
|
1209 |
virtio_ccw_bus_new(&_dev->bus, _dev); |
1210 |
|
1211 |
return _info->init(_dev);
|
1212 |
} |
1213 |
|
1214 |
static int virtio_ccw_busdev_exit(DeviceState *dev) |
1215 |
{ |
1216 |
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
1217 |
VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); |
1218 |
|
1219 |
return _info->exit(_dev);
|
1220 |
} |
1221 |
|
1222 |
static int virtio_ccw_busdev_unplug(DeviceState *dev) |
1223 |
{ |
1224 |
VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; |
1225 |
SubchDev *sch = _dev->sch; |
1226 |
|
1227 |
/*
|
1228 |
* We should arrive here only for device_del, since we don't support
|
1229 |
* direct hot(un)plug of channels, but only through virtio.
|
1230 |
*/
|
1231 |
assert(sch != NULL);
|
1232 |
/* Subchannel is now disabled and no longer valid. */
|
1233 |
sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | |
1234 |
PMCW_FLAGS_MASK_DNV); |
1235 |
|
1236 |
css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); |
1237 |
|
1238 |
qdev_free(dev); |
1239 |
return 0; |
1240 |
} |
1241 |
|
1242 |
static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) |
1243 |
{ |
1244 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1245 |
|
1246 |
dc->init = virtio_ccw_busdev_init; |
1247 |
dc->exit = virtio_ccw_busdev_exit; |
1248 |
dc->unplug = virtio_ccw_busdev_unplug; |
1249 |
dc->bus_type = TYPE_VIRTUAL_CSS_BUS; |
1250 |
|
1251 |
} |
1252 |
|
1253 |
static const TypeInfo virtio_ccw_device_info = { |
1254 |
.name = TYPE_VIRTIO_CCW_DEVICE, |
1255 |
.parent = TYPE_DEVICE, |
1256 |
.instance_size = sizeof(VirtioCcwDevice),
|
1257 |
.class_init = virtio_ccw_device_class_init, |
1258 |
.class_size = sizeof(VirtIOCCWDeviceClass),
|
1259 |
.abstract = true,
|
1260 |
}; |
1261 |
|
1262 |
/***************** Virtual-css Bus Bridge Device ********************/
|
1263 |
/* Only required to have the virtio bus as child in the system bus */
|
1264 |
|
1265 |
static int virtual_css_bridge_init(SysBusDevice *dev) |
1266 |
{ |
1267 |
/* nothing */
|
1268 |
return 0; |
1269 |
} |
1270 |
|
1271 |
static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) |
1272 |
{ |
1273 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1274 |
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
1275 |
|
1276 |
k->init = virtual_css_bridge_init; |
1277 |
dc->no_user = 1;
|
1278 |
} |
1279 |
|
1280 |
static const TypeInfo virtual_css_bridge_info = { |
1281 |
.name = "virtual-css-bridge",
|
1282 |
.parent = TYPE_SYS_BUS_DEVICE, |
1283 |
.instance_size = sizeof(SysBusDevice),
|
1284 |
.class_init = virtual_css_bridge_class_init, |
1285 |
}; |
1286 |
|
1287 |
/* virtio-ccw-bus */
|
1288 |
|
1289 |
static void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev) |
1290 |
{ |
1291 |
DeviceState *qdev = DEVICE(dev); |
1292 |
BusState *qbus; |
1293 |
char virtio_bus_name[] = "virtio-bus"; |
1294 |
|
1295 |
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_CCW_BUS, qdev, |
1296 |
virtio_bus_name); |
1297 |
qbus = BUS(bus); |
1298 |
qbus->allow_hotplug = 1;
|
1299 |
} |
1300 |
|
1301 |
static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) |
1302 |
{ |
1303 |
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); |
1304 |
BusClass *bus_class = BUS_CLASS(klass); |
1305 |
|
1306 |
bus_class->max_dev = 1;
|
1307 |
k->notify = virtio_ccw_notify; |
1308 |
k->get_features = virtio_ccw_get_features; |
1309 |
k->vmstate_change = virtio_ccw_vmstate_change; |
1310 |
k->query_guest_notifiers = virtio_ccw_query_guest_notifiers; |
1311 |
k->set_host_notifier = virtio_ccw_set_host_notifier; |
1312 |
k->set_guest_notifiers = virtio_ccw_set_guest_notifiers; |
1313 |
} |
1314 |
|
1315 |
static const TypeInfo virtio_ccw_bus_info = { |
1316 |
.name = TYPE_VIRTIO_CCW_BUS, |
1317 |
.parent = TYPE_VIRTIO_BUS, |
1318 |
.instance_size = sizeof(VirtioCcwBusState),
|
1319 |
.class_init = virtio_ccw_bus_class_init, |
1320 |
}; |
1321 |
|
1322 |
static void virtio_ccw_register(void) |
1323 |
{ |
1324 |
type_register_static(&virtio_ccw_bus_info); |
1325 |
type_register_static(&virtual_css_bus_info); |
1326 |
type_register_static(&virtio_ccw_device_info); |
1327 |
type_register_static(&virtio_ccw_serial); |
1328 |
type_register_static(&virtio_ccw_blk); |
1329 |
type_register_static(&virtio_ccw_net); |
1330 |
type_register_static(&virtio_ccw_balloon); |
1331 |
type_register_static(&virtio_ccw_scsi); |
1332 |
#ifdef CONFIG_VHOST_SCSI
|
1333 |
type_register_static(&vhost_ccw_scsi); |
1334 |
#endif
|
1335 |
type_register_static(&virtio_ccw_rng); |
1336 |
type_register_static(&virtual_css_bridge_info); |
1337 |
} |
1338 |
|
1339 |
type_init(virtio_ccw_register) |