diff options
Diffstat (limited to 'hw/virtio/virtio-mem-pci.c')
| -rw-r--r-- | hw/virtio/virtio-mem-pci.c | 89 |
1 files changed, 72 insertions, 17 deletions
diff --git a/hw/virtio/virtio-mem-pci.c b/hw/virtio/virtio-mem-pci.c index fa5395cd88..1b4e9a3284 100644 --- a/hw/virtio/virtio-mem-pci.c +++ b/hw/virtio/virtio-mem-pci.c @@ -42,12 +42,31 @@ static MemoryRegion *virtio_mem_pci_get_memory_region(MemoryDeviceState *md, Error **errp) { VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md); - VirtIOMEM *vmem = VIRTIO_MEM(&pci_mem->vdev); + VirtIOMEM *vmem = &pci_mem->vdev; VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem); return vmc->get_memory_region(vmem, errp); } +static void virtio_mem_pci_decide_memslots(MemoryDeviceState *md, + unsigned int limit) +{ + VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md); + VirtIOMEM *vmem = VIRTIO_MEM(&pci_mem->vdev); + VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem); + + vmc->decide_memslots(vmem, limit); +} + +static unsigned int virtio_mem_pci_get_memslots(MemoryDeviceState *md) +{ + VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md); + VirtIOMEM *vmem = VIRTIO_MEM(&pci_mem->vdev); + VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem); + + return vmc->get_memslots(vmem); +} + static uint64_t virtio_mem_pci_get_plugged_size(const MemoryDeviceState *md, Error **errp) { @@ -60,12 +79,11 @@ static void virtio_mem_pci_fill_device_info(const MemoryDeviceState *md, { VirtioMEMDeviceInfo *vi = g_new0(VirtioMEMDeviceInfo, 1); VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md); - VirtIOMEM *vmem = VIRTIO_MEM(&pci_mem->vdev); + VirtIOMEM *vmem = &pci_mem->vdev; VirtIOMEMClass *vpc = VIRTIO_MEM_GET_CLASS(vmem); DeviceState *dev = DEVICE(md); if (dev->id) { - vi->has_id = true; vi->id = g_strdup(dev->id); } @@ -87,14 +105,51 @@ static void virtio_mem_pci_size_change_notify(Notifier *notifier, void *data) VirtIOMEMPCI *pci_mem = container_of(notifier, VirtIOMEMPCI, size_change_notifier); DeviceState *dev = DEVICE(pci_mem); + char *qom_path = object_get_canonical_path(OBJECT(dev)); const uint64_t * const size_p = data; - const char *id = NULL; - if (dev->id) { - id = g_strdup(dev->id); + qapi_event_send_memory_device_size_change(dev->id, *size_p, qom_path); + g_free(qom_path); +} + +static void virtio_mem_pci_unplug_request_check(VirtIOMDPCI *vmd, Error **errp) +{ + VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(vmd); + VirtIOMEM *vmem = &pci_mem->vdev; + VirtIOMEMClass *vpc = VIRTIO_MEM_GET_CLASS(vmem); + + vpc->unplug_request_check(vmem, errp); +} + +static void virtio_mem_pci_get_requested_size(Object *obj, Visitor *v, + const char *name, void *opaque, + Error **errp) +{ + VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(obj); + + object_property_get(OBJECT(&pci_mem->vdev), name, v, errp); +} + +static void virtio_mem_pci_set_requested_size(Object *obj, Visitor *v, + const char *name, void *opaque, + Error **errp) +{ + VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(obj); + DeviceState *dev = DEVICE(obj); + + /* + * If we passed virtio_mem_pci_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 (dev->pending_deleted_event) { + error_setg(errp, "'%s' cannot be changed if the device is in the" + " process of unplug", name); + return; } - qapi_event_send_memory_device_size_change(!!id, id, *size_p); + object_property_set(OBJECT(&pci_mem->vdev), name, v, errp); } static void virtio_mem_pci_class_init(ObjectClass *klass, void *data) @@ -103,11 +158,10 @@ static void virtio_mem_pci_class_init(ObjectClass *klass, void *data) VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(klass); + VirtIOMDPCIClass *vmdc = VIRTIO_MD_PCI_CLASS(klass); k->realize = virtio_mem_pci_realize; set_bit(DEVICE_CATEGORY_MISC, dc->categories); - pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; - pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_MEM; pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; pcidev_k->class_id = PCI_CLASS_OTHERS; @@ -115,8 +169,12 @@ static void virtio_mem_pci_class_init(ObjectClass *klass, void *data) mdc->set_addr = virtio_mem_pci_set_addr; mdc->get_plugged_size = virtio_mem_pci_get_plugged_size; mdc->get_memory_region = virtio_mem_pci_get_memory_region; + mdc->decide_memslots = virtio_mem_pci_decide_memslots; + mdc->get_memslots = virtio_mem_pci_get_memslots; mdc->fill_device_info = virtio_mem_pci_fill_device_info; mdc->get_min_alignment = virtio_mem_pci_get_min_alignment; + + vmdc->unplug_request_check = virtio_mem_pci_unplug_request_check; } static void virtio_mem_pci_instance_init(Object *obj) @@ -129,7 +187,7 @@ static void virtio_mem_pci_instance_init(Object *obj) TYPE_VIRTIO_MEM); dev->size_change_notifier.notify = virtio_mem_pci_size_change_notify; - vmem = VIRTIO_MEM(&dev->vdev); + vmem = &dev->vdev; vmc = VIRTIO_MEM_GET_CLASS(vmem); /* * We never remove the notifier again, as we expect both devices to @@ -141,21 +199,18 @@ static void virtio_mem_pci_instance_init(Object *obj) 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_alias(obj, VIRTIO_MEM_REQUESTED_SIZE_PROP, - OBJECT(&dev->vdev), - VIRTIO_MEM_REQUESTED_SIZE_PROP); + object_property_add(obj, VIRTIO_MEM_REQUESTED_SIZE_PROP, "size", + virtio_mem_pci_get_requested_size, + virtio_mem_pci_set_requested_size, NULL, NULL); } static const VirtioPCIDeviceTypeInfo virtio_mem_pci_info = { .base_name = TYPE_VIRTIO_MEM_PCI, + .parent = TYPE_VIRTIO_MD_PCI, .generic_name = "virtio-mem-pci", .instance_size = sizeof(VirtIOMEMPCI), .instance_init = virtio_mem_pci_instance_init, .class_init = virtio_mem_pci_class_init, - .interfaces = (InterfaceInfo[]) { - { TYPE_MEMORY_DEVICE }, - { } - }, }; static void virtio_mem_pci_register_types(void) |