virtio-ccw: add virtio-crypto-ccw device

[mirror_qemu.git] / hw / s390x / virtio-ccw.c

diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 7d7f8f6e19eebbc4b50e37e5e4236bb819f1613d..613d8c66153fde4c217d4e0aaa1fcde3418671bc 100644 (file)
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -149,7 +149,7 @@ static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info,
     } else {
         if (info) {
             /* virtio-1 allows changing the ring size. */
-            if (virtio_queue_get_num(vdev, index) < num) {
+            if (virtio_queue_get_max_num(vdev, index) < num) {
                 /* Fail if we exceed the maximum number. */
                 return -EINVAL;
             }
@@ -280,6 +280,15 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
                                    ccw.cmd_code);
     check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
 
+    if (dev->force_revision_1 && dev->revision < 0 &&
+        ccw.cmd_code != CCW_CMD_SET_VIRTIO_REV) {
+        /*
+         * virtio-1 drivers must start with negotiating to a revision >= 1,
+         * so post a command reject for all other commands
+         */
+        return -ENOSYS;
+    }
+
     /* Look at the command. */
     switch (ccw.cmd_code) {
     case CCW_CMD_SET_VQ:
@@ -303,6 +312,8 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
         if (!ccw.cda) {
             ret = -EFAULT;
         } else {
+            VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
+
             features.index = address_space_ldub(&address_space_memory,
                                                 ccw.cda
                                                 + sizeof(features.features),
@@ -312,7 +323,7 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
                 if (dev->revision >= 1) {
                     /* Don't offer legacy features for modern devices. */
                     features.features = (uint32_t)
-                        (vdev->host_features & ~VIRTIO_LEGACY_FEATURES);
+                        (vdev->host_features & ~vdc->legacy_features);
                 } else {
                     features.features = (uint32_t)vdev->host_features;
                 }
@@ -636,7 +647,8 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
          * need to fetch it here. Nothing to do for now, though.
          */
         if (dev->revision >= 0 ||
-            revinfo.revision > virtio_ccw_rev_max(dev)) {
+            revinfo.revision > virtio_ccw_rev_max(dev) ||
+            (dev->force_revision_1 && !revinfo.revision)) {
             ret = -ENOSYS;
             break;
         }
@@ -667,6 +679,12 @@ static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
     if (!sch) {
         return;
     }
+    if (!virtio_ccw_rev_max(dev) && dev->force_revision_1) {
+        error_setg(&err, "Invalid value of property max_rev "
+                   "(is %d expected >= 1)", virtio_ccw_rev_max(dev));
+        error_propagate(errp, err);
+        return;
+    }
 
     sch->driver_data = dev;
     sch->ccw_cb = virtio_ccw_cb;
@@ -876,6 +894,24 @@ static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
                              NULL);
 }
 
+static void virtio_ccw_crypto_realize(VirtioCcwDevice *ccw_dev, Error **errp)
+{
+    VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_CCW(ccw_dev);
+    DeviceState *vdev = DEVICE(&dev->vdev);
+    Error *err = NULL;
+
+    qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
+    object_property_set_bool(OBJECT(vdev), true, "realized", &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+
+    object_property_set_link(OBJECT(vdev),
+                             OBJECT(dev->vdev.conf.cryptodev), "cryptodev",
+                             NULL);
+}
+
 /* DeviceState to VirtioCcwDevice. Note: used on datapath,
  * be careful and test performance if you change this.
  */
@@ -1096,7 +1132,7 @@ static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n,
          * We do not support individual masking for channel devices, so we
          * need to manually trigger any guest masking callbacks here.
          */
-        if (k->guest_notifier_mask) {
+        if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) {
             k->guest_notifier_mask(vdev, n, false);
         }
         /* get lost events and re-inject */
@@ -1105,7 +1141,7 @@ static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n,
             event_notifier_set(notifier);
         }
     } else {
-        if (k->guest_notifier_mask) {
+        if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) {
             k->guest_notifier_mask(vdev, n, true);
         }
         if (with_irqfd) {
@@ -1516,6 +1552,48 @@ static const TypeInfo virtio_ccw_rng = {
     .class_init    = virtio_ccw_rng_class_init,
 };
 
+static Property virtio_ccw_crypto_properties[] = {
+    DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
+    DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
+                    VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
+    DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
+                       VIRTIO_CCW_MAX_REV),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void virtio_ccw_crypto_instance_init(Object *obj)
+{
+    VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_CCW(obj);
+    VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
+
+    ccw_dev->force_revision_1 = true;
+    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
+                                TYPE_VIRTIO_CRYPTO);
+
+    object_property_add_alias(obj, "cryptodev", OBJECT(&dev->vdev),
+                              "cryptodev", &error_abort);
+}
+
+static void virtio_ccw_crypto_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
+
+    k->realize = virtio_ccw_crypto_realize;
+    k->exit = virtio_ccw_exit;
+    dc->reset = virtio_ccw_reset;
+    dc->props = virtio_ccw_crypto_properties;
+    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+}
+
+static const TypeInfo virtio_ccw_crypto = {
+    .name          = TYPE_VIRTIO_CRYPTO_CCW,
+    .parent        = TYPE_VIRTIO_CCW_DEVICE,
+    .instance_size = sizeof(VirtIOCryptoCcw),
+    .instance_init = virtio_ccw_crypto_instance_init,
+    .class_init    = virtio_ccw_crypto_class_init,
+};
+
 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp)
 {
     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
@@ -1718,6 +1796,7 @@ static void virtio_ccw_register(void)
 #ifdef CONFIG_VHOST_VSOCK
     type_register_static(&vhost_vsock_ccw_info);
 #endif
+    type_register_static(&virtio_ccw_crypto);
 }
 
 type_init(virtio_ccw_register)