--- /dev/null
-static Property virtio_ccw_mem_properties[] = {
+ /*
+ * virtio-mem CCW implementation
+ *
+ * Copyright (C) 2024 Red Hat, Inc.
+ *
+ * Authors:
+ * David Hildenbrand <david@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ * See the COPYING file in the top-level directory.
+ */
+
+ #include "qemu/osdep.h"
+ #include "hw/qdev-properties.h"
+ #include "qapi/error.h"
+ #include "qemu/module.h"
+ #include "virtio-ccw-mem.h"
+ #include "hw/mem/memory-device.h"
+ #include "qapi/qapi-events-machine.h"
+ #include "qapi/qapi-events-misc.h"
+
+ static void virtio_ccw_mem_realize(VirtioCcwDevice *ccw_dev, Error **errp)
+ {
+ VirtIOMEMCcw *dev = VIRTIO_MEM_CCW(ccw_dev);
+ DeviceState *vdev = DEVICE(&dev->vdev);
+
+ qdev_realize(vdev, BUS(&ccw_dev->bus), errp);
+ }
+
+ static void virtio_ccw_mem_set_addr(MemoryDeviceState *md, uint64_t addr,
+ Error **errp)
+ {
+ object_property_set_uint(OBJECT(md), VIRTIO_MEM_ADDR_PROP, addr, errp);
+ }
+
+ static uint64_t virtio_ccw_mem_get_addr(const MemoryDeviceState *md)
+ {
+ return object_property_get_uint(OBJECT(md), VIRTIO_MEM_ADDR_PROP,
+ &error_abort);
+ }
+
+ static MemoryRegion *virtio_ccw_mem_get_memory_region(MemoryDeviceState *md,
+ Error **errp)
+ {
+ VirtIOMEMCcw *dev = VIRTIO_MEM_CCW(md);
+ VirtIOMEM *vmem = &dev->vdev;
+ VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem);
+
+ return vmc->get_memory_region(vmem, errp);
+ }
+
+ static void virtio_ccw_mem_decide_memslots(MemoryDeviceState *md,
+ unsigned int limit)
+ {
+ VirtIOMEMCcw *dev = VIRTIO_MEM_CCW(md);
+ VirtIOMEM *vmem = VIRTIO_MEM(&dev->vdev);
+ VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem);
+
+ vmc->decide_memslots(vmem, limit);
+ }
+
+ static unsigned int virtio_ccw_mem_get_memslots(MemoryDeviceState *md)
+ {
+ VirtIOMEMCcw *dev = VIRTIO_MEM_CCW(md);
+ VirtIOMEM *vmem = VIRTIO_MEM(&dev->vdev);
+ VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem);
+
+ return vmc->get_memslots(vmem);
+ }
+
+ static uint64_t virtio_ccw_mem_get_plugged_size(const MemoryDeviceState *md,
+ Error **errp)
+ {
+ return object_property_get_uint(OBJECT(md), VIRTIO_MEM_SIZE_PROP,
+ errp);
+ }
+
+ static void virtio_ccw_mem_fill_device_info(const MemoryDeviceState *md,
+ MemoryDeviceInfo *info)
+ {
+ VirtioMEMDeviceInfo *vi = g_new0(VirtioMEMDeviceInfo, 1);
+ VirtIOMEMCcw *dev = VIRTIO_MEM_CCW(md);
+ VirtIOMEM *vmem = &dev->vdev;
+ VirtIOMEMClass *vpc = VIRTIO_MEM_GET_CLASS(vmem);
+ DeviceState *vdev = DEVICE(md);
+
+ if (vdev->id) {
+ vi->id = g_strdup(vdev->id);
+ }
+
+ /* let the real device handle everything else */
+ vpc->fill_device_info(vmem, vi);
+
+ info->u.virtio_mem.data = vi;
+ info->type = MEMORY_DEVICE_INFO_KIND_VIRTIO_MEM;
+ }
+
+ static uint64_t virtio_ccw_mem_get_min_alignment(const MemoryDeviceState *md)
+ {
+ return object_property_get_uint(OBJECT(md), VIRTIO_MEM_BLOCK_SIZE_PROP,
+ &error_abort);
+ }
+
+ static void virtio_ccw_mem_size_change_notify(Notifier *notifier, void *data)
+ {
+ VirtIOMEMCcw *dev = container_of(notifier, VirtIOMEMCcw,
+ size_change_notifier);
+ DeviceState *vdev = DEVICE(dev);
+ char *qom_path = object_get_canonical_path(OBJECT(dev));
+ const uint64_t * const size_p = data;
+
+ qapi_event_send_memory_device_size_change(vdev->id, *size_p, qom_path);
+ g_free(qom_path);
+ }
+
+ static void virtio_ccw_mem_unplug_request_check(VirtIOMDCcw *vmd, Error **errp)
+ {
+ VirtIOMEMCcw *dev = VIRTIO_MEM_CCW(vmd);
+ VirtIOMEM *vmem = &dev->vdev;
+ VirtIOMEMClass *vpc = VIRTIO_MEM_GET_CLASS(vmem);
+
+ vpc->unplug_request_check(vmem, errp);
+ }
+
+ static void virtio_ccw_mem_get_requested_size(Object *obj, Visitor *v,
+ const char *name, void *opaque,
+ Error **errp)
+ {
+ VirtIOMEMCcw *dev = VIRTIO_MEM_CCW(obj);
+
+ object_property_get(OBJECT(&dev->vdev), name, v, errp);
+ }
+
+ static void virtio_ccw_mem_set_requested_size(Object *obj, Visitor *v,
+ const char *name, void *opaque,
+ Error **errp)
+ {
+ VirtIOMEMCcw *dev = VIRTIO_MEM_CCW(obj);
+ DeviceState *vdev = DEVICE(obj);
+
+ /*
+ * If we passed virtio_ccw_mem_unplug_request_check(), making sure that
+ * the requested size is 0, don't allow modifying the requested size
+ * anymore, otherwise the VM might end up hotplugging memory before
+ * handling the unplug request.
+ */
+ if (vdev->pending_deleted_event) {
+ error_setg(errp, "'%s' cannot be changed if the device is in the"
+ " process of unplug", name);
+ return;
+ }
+
+ object_property_set(OBJECT(&dev->vdev), name, v, errp);
+ }
+
- DEFINE_PROP_END_OF_LIST(),
++static const Property virtio_ccw_mem_properties[] = {
+ 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),
+ };
+
+ static void virtio_ccw_mem_class_init(ObjectClass *klass, void *data)
+ {
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
+ MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(klass);
+ VirtIOMDCcwClass *vmdc = VIRTIO_MD_CCW_CLASS(klass);
+
+ k->realize = virtio_ccw_mem_realize;
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ device_class_set_props(dc, virtio_ccw_mem_properties);
+
+ mdc->get_addr = virtio_ccw_mem_get_addr;
+ mdc->set_addr = virtio_ccw_mem_set_addr;
+ mdc->get_plugged_size = virtio_ccw_mem_get_plugged_size;
+ mdc->get_memory_region = virtio_ccw_mem_get_memory_region;
+ mdc->decide_memslots = virtio_ccw_mem_decide_memslots;
+ mdc->get_memslots = virtio_ccw_mem_get_memslots;
+ mdc->fill_device_info = virtio_ccw_mem_fill_device_info;
+ mdc->get_min_alignment = virtio_ccw_mem_get_min_alignment;
+
+ vmdc->unplug_request_check = virtio_ccw_mem_unplug_request_check;
+ }
+
+ static void virtio_ccw_mem_instance_init(Object *obj)
+ {
+ VirtIOMEMCcw *dev = VIRTIO_MEM_CCW(obj);
+ VirtIOMEMClass *vmc;
+ VirtIOMEM *vmem;
+
+ virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
+ TYPE_VIRTIO_MEM);
+
+ dev->size_change_notifier.notify = virtio_ccw_mem_size_change_notify;
+ vmem = &dev->vdev;
+ vmc = VIRTIO_MEM_GET_CLASS(vmem);
+ /*
+ * We never remove the notifier again, as we expect both devices to
+ * disappear at the same time.
+ */
+ vmc->add_size_change_notifier(vmem, &dev->size_change_notifier);
+
+ object_property_add_alias(obj, VIRTIO_MEM_BLOCK_SIZE_PROP,
+ OBJECT(&dev->vdev), VIRTIO_MEM_BLOCK_SIZE_PROP);
+ object_property_add_alias(obj, VIRTIO_MEM_SIZE_PROP, OBJECT(&dev->vdev),
+ VIRTIO_MEM_SIZE_PROP);
+ object_property_add(obj, VIRTIO_MEM_REQUESTED_SIZE_PROP, "size",
+ virtio_ccw_mem_get_requested_size,
+ virtio_ccw_mem_set_requested_size, NULL, NULL);
+ }
+
+ static const TypeInfo virtio_ccw_mem = {
+ .name = TYPE_VIRTIO_MEM_CCW,
+ .parent = TYPE_VIRTIO_MD_CCW,
+ .instance_size = sizeof(VirtIOMEMCcw),
+ .instance_init = virtio_ccw_mem_instance_init,
+ .class_init = virtio_ccw_mem_class_init,
+ };
+
+ static void virtio_ccw_mem_register_types(void)
+ {
+ type_register_static(&virtio_ccw_mem);
+ }
+ type_init(virtio_ccw_mem_register_types)
projects / thirdparty / qemu.git / commitdiff
