s390x/css: ccw translation infrastructure

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

diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 613d8c66153fde4c217d4e0aaa1fcde3418671bc..e6a6f74be3f3fdd8964352ad60e5b60cdd946f4d 100644 (file)
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -35,6 +35,8 @@
 #include "trace.h"
 #include "hw/s390x/css-bridge.h"
 
+#define NR_CLASSIC_INDICATOR_BITS 64
+
 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
                                VirtioCcwDevice *dev);
 
@@ -126,7 +128,7 @@ static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info,
     uint16_t num = info ? info->num : linfo->num;
     uint64_t desc = info ? info->desc : linfo->queue;
 
-    if (index >= VIRTIO_CCW_QUEUE_MAX) {
+    if (index >= VIRTIO_QUEUE_MAX) {
         return -EINVAL;
     }
 
@@ -162,7 +164,7 @@ static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info,
         virtio_queue_set_vector(vdev, index, index);
     }
     /* tell notify handler in case of config change */
-    vdev->config_vector = VIRTIO_CCW_QUEUE_MAX;
+    vdev->config_vector = VIRTIO_QUEUE_MAX;
     return 0;
 }
 
@@ -509,6 +511,11 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
             ret = -ENOSYS;
             break;
         }
+        if (virtio_get_num_queues(vdev) > NR_CLASSIC_INDICATOR_BITS) {
+            /* More queues than indicator bits --> trigger a reject */
+            ret = -ENOSYS;
+            break;
+        }
         if (!ccw.cda) {
             ret = -EFAULT;
         } else {
@@ -558,7 +565,7 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
                                                     ccw.cda,
                                                     MEMTXATTRS_UNSPECIFIED,
                                                     NULL);
-            if (vq_config.index >= VIRTIO_CCW_QUEUE_MAX) {
+            if (vq_config.index >= VIRTIO_QUEUE_MAX) {
                 ret = -EINVAL;
                 break;
             }
@@ -609,10 +616,9 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
                 dev->routes.adapter.ind_offset = ind_bit;
                 dev->routes.adapter.summary_offset = 7;
                 cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len);
-                ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
-                                              dev->thinint_isc, true, false,
-                                              &dev->routes.adapter.adapter_id);
-                assert(ret == 0);
+                dev->routes.adapter.adapter_id = css_get_adapter_id(
+                                                 CSS_IO_ADAPTER_VIRTIO,
+                                                 dev->thinint_isc);
                 sch->thinint_active = ((dev->indicators != NULL) &&
                                        (dev->summary_indicator != NULL));
                 sch->curr_status.scsw.count = ccw.count - len;
@@ -673,17 +679,21 @@ static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
 {
     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
     CcwDevice *ccw_dev = CCW_DEVICE(dev);
-    SubchDev *sch = css_create_virtual_sch(ccw_dev->bus_id, errp);
+    CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
+    DeviceState *parent = DEVICE(ccw_dev);
+    BusState *qbus = qdev_get_parent_bus(parent);
+    VirtualCssBus *cbus = VIRTUAL_CSS_BUS(qbus);
+    SubchDev *sch;
     Error *err = NULL;
 
+    sch = css_create_sch(ccw_dev->devno, true, cbus->squash_mcss, errp);
     if (!sch) {
         return;
     }
     if (!virtio_ccw_rev_max(dev) && dev->force_revision_1) {
         error_setg(&err, "Invalid value of property max_rev "
                    "(is %d expected >= 1)", virtio_ccw_rev_max(dev));
-        error_propagate(errp, err);
-        return;
+        goto out_err;
     }
 
     sch->driver_data = dev;
@@ -691,6 +701,7 @@ static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
     sch->disable_cb = virtio_sch_disable_cb;
     sch->id.reserved = 0xff;
     sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
+    sch->do_subchannel_work = do_subchannel_work_virtual;
     ccw_dev->sch = sch;
     dev->indicators = NULL;
     dev->revision = -1;
@@ -698,7 +709,7 @@ static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
 
     trace_virtio_ccw_new_device(
         sch->cssid, sch->ssid, sch->schid, sch->devno,
-        ccw_dev->bus_id.valid ? "user-configured" : "auto-configured");
+        ccw_dev->devno.valid ? "user-configured" : "auto-configured");
 
     if (!kvm_eventfds_enabled()) {
         dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
@@ -706,13 +717,23 @@ static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
 
     if (k->realize) {
         k->realize(dev, &err);
+        if (err) {
+            goto out_err;
+        }
     }
+
+    ck->realize(ccw_dev, &err);
     if (err) {
-        error_propagate(errp, err);
-        css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
-        ccw_dev->sch = NULL;
-        g_free(sch);
+        goto out_err;
     }
+
+    return;
+
+out_err:
+    error_propagate(errp, err);
+    css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
+    ccw_dev->sch = NULL;
+    g_free(sch);
 }
 
 static int virtio_ccw_exit(VirtioCcwDevice *dev)
@@ -953,11 +974,11 @@ static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
     uint64_t indicators;
 
     /* queue indicators + secondary indicators */
-    if (vector >= VIRTIO_CCW_QUEUE_MAX + 64) {
+    if (vector >= VIRTIO_QUEUE_MAX + 64) {
         return;
     }
 
-    if (vector < VIRTIO_CCW_QUEUE_MAX) {
+    if (vector < VIRTIO_QUEUE_MAX) {
         if (!dev->indicators) {
             return;
         }
@@ -1254,12 +1275,17 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
 {
     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
     CcwDevice *ccw_dev = CCW_DEVICE(d);
+    CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
     SubchDev *s = ccw_dev->sch;
     VirtIODevice *vdev = virtio_ccw_get_vdev(s);
     int len;
 
     s->driver_data = dev;
     subch_device_load(s, f);
+    /* Re-fill subch_id after loading the subchannel states.*/
+    if (ck->refill_ids) {
+        ck->refill_ids(ccw_dev);
+    }
     len = qemu_get_be32(f);
     if (len != 0) {
         dev->indicators = get_indicator(qemu_get_be64(f), len);
@@ -1286,9 +1312,9 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
     dev->thinint_isc = qemu_get_byte(f);
     dev->revision = qemu_get_be32(f);
     if (s->thinint_active) {
-        return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
-                                       dev->thinint_isc, true, false,
-                                       &dev->routes.adapter.adapter_id);
+        dev->routes.adapter.adapter_id = css_get_adapter_id(
+                                         CSS_IO_ADAPTER_VIRTIO,
+                                         dev->thinint_isc);
     }
 
     return 0;
@@ -1312,15 +1338,22 @@ static void virtio_ccw_device_plugged(DeviceState *d, Error **errp)
     CcwDevice *ccw_dev = CCW_DEVICE(d);
     SubchDev *sch = ccw_dev->sch;
     int n = virtio_get_num_queues(vdev);
+    S390FLICState *flic = s390_get_flic();
 
     if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
         dev->max_rev = 0;
     }
 
-    if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) {
+    if (virtio_get_num_queues(vdev) > VIRTIO_QUEUE_MAX) {
+        error_setg(errp, "The number of virtqueues %d "
+                   "exceeds virtio limit %d", n,
+                   VIRTIO_QUEUE_MAX);
+        return;
+    }
+    if (virtio_get_num_queues(vdev) > flic->adapter_routes_max_batch) {
         error_setg(errp, "The number of virtqueues %d "
-                   "exceeds ccw limit %d", n,
-                   VIRTIO_CCW_QUEUE_MAX);
+                   "exceeds flic adapter route limit %d", n,
+                   flic->adapter_routes_max_batch);
         return;
     }
 
@@ -1340,7 +1373,6 @@ static void virtio_ccw_device_unplugged(DeviceState *d)
 /**************** Virtio-ccw Bus Device Descriptions *******************/
 
 static Property virtio_ccw_net_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,
@@ -1369,7 +1401,6 @@ static const TypeInfo virtio_ccw_net = {
 };
 
 static Property virtio_ccw_blk_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,
@@ -1398,7 +1429,6 @@ static const TypeInfo virtio_ccw_blk = {
 };
 
 static Property virtio_ccw_serial_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,
@@ -1427,7 +1457,6 @@ static const TypeInfo virtio_ccw_serial = {
 };
 
 static Property virtio_ccw_balloon_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,
@@ -1456,7 +1485,6 @@ static const TypeInfo virtio_ccw_balloon = {
 };
 
 static Property virtio_ccw_scsi_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,
@@ -1486,7 +1514,6 @@ static const TypeInfo virtio_ccw_scsi = {
 
 #ifdef CONFIG_VHOST_SCSI
 static Property vhost_ccw_scsi_properties[] = {
-    DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
                        VIRTIO_CCW_MAX_REV),
     DEFINE_PROP_END_OF_LIST(),
@@ -1524,7 +1551,6 @@ static void virtio_ccw_rng_instance_init(Object *obj)
 }
 
 static Property virtio_ccw_rng_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,
@@ -1553,7 +1579,6 @@ static const TypeInfo virtio_ccw_rng = {
 };
 
 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,
@@ -1680,7 +1705,6 @@ static const TypeInfo virtio_ccw_bus_info = {
 
 #ifdef CONFIG_VIRTFS
 static Property virtio_ccw_9p_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,
@@ -1729,7 +1753,6 @@ static const TypeInfo virtio_ccw_9p_info = {
 #ifdef CONFIG_VHOST_VSOCK
 
 static Property vhost_vsock_ccw_properties[] = {
-    DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
                        VIRTIO_CCW_MAX_REV),
     DEFINE_PROP_END_OF_LIST(),
@@ -1743,9 +1766,7 @@ static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 
     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
-    if (err) {
-        error_propagate(errp, err);
-    }
+    error_propagate(errp, err);
 }
 
 static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)