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authorDavid Hildenbrand <david@redhat.com>2020-06-26 09:22:38 +0200
committerMichael S. Tsirkin <mst@redhat.com>2020-07-03 07:57:04 -0400
commit0b9a2443a48b806c775b47c4a1e9effdab03ddf2 (patch)
tree0552ff8c2031c2bee4e9a3275b3e7dfbd2c453d8 /hw/virtio/virtio-mem-pci.c
parent910b25766b336a94d69f5f6e1b55c10b3aeb4326 (diff)
virtio-pci: Proxy for virtio-mem
Let's add a proxy for virtio-mem, make it a memory device, and pass-through the properties. Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20200626072248.78761-12-david@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/virtio/virtio-mem-pci.c')
-rw-r--r--hw/virtio/virtio-mem-pci.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/hw/virtio/virtio-mem-pci.c b/hw/virtio/virtio-mem-pci.c
new file mode 100644
index 0000000000..b325303b32
--- /dev/null
+++ b/hw/virtio/virtio-mem-pci.c
@@ -0,0 +1,129 @@
+/*
+ * Virtio MEM PCI device
+ *
+ * Copyright (C) 2020 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 "virtio-mem-pci.h"
+#include "hw/mem/memory-device.h"
+#include "qapi/error.h"
+
+static void virtio_mem_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
+{
+ VirtIOMEMPCI *mem_pci = VIRTIO_MEM_PCI(vpci_dev);
+ DeviceState *vdev = DEVICE(&mem_pci->vdev);
+
+ qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
+ object_property_set_bool(OBJECT(vdev), true, "realized", errp);
+}
+
+static void virtio_mem_pci_set_addr(MemoryDeviceState *md, uint64_t addr,
+ Error **errp)
+{
+ object_property_set_uint(OBJECT(md), addr, VIRTIO_MEM_ADDR_PROP, errp);
+}
+
+static uint64_t virtio_mem_pci_get_addr(const MemoryDeviceState *md)
+{
+ return object_property_get_uint(OBJECT(md), VIRTIO_MEM_ADDR_PROP,
+ &error_abort);
+}
+
+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);
+ VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem);
+
+ return vmc->get_memory_region(vmem, errp);
+}
+
+static uint64_t virtio_mem_pci_get_plugged_size(const MemoryDeviceState *md,
+ Error **errp)
+{
+ return object_property_get_uint(OBJECT(md), VIRTIO_MEM_SIZE_PROP,
+ errp);
+}
+
+static void virtio_mem_pci_fill_device_info(const MemoryDeviceState *md,
+ MemoryDeviceInfo *info)
+{
+ VirtioMEMDeviceInfo *vi = g_new0(VirtioMEMDeviceInfo, 1);
+ VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md);
+ VirtIOMEM *vmem = VIRTIO_MEM(&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);
+ }
+
+ /* 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 void virtio_mem_pci_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
+ PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+ MemoryDeviceClass *mdc = MEMORY_DEVICE_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;
+
+ mdc->get_addr = virtio_mem_pci_get_addr;
+ 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->fill_device_info = virtio_mem_pci_fill_device_info;
+}
+
+static void virtio_mem_pci_instance_init(Object *obj)
+{
+ VirtIOMEMPCI *dev = VIRTIO_MEM_PCI(obj);
+
+ virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
+ TYPE_VIRTIO_MEM);
+ 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_alias(obj, VIRTIO_MEM_REQUESTED_SIZE_PROP,
+ OBJECT(&dev->vdev),
+ VIRTIO_MEM_REQUESTED_SIZE_PROP);
+}
+
+static const VirtioPCIDeviceTypeInfo virtio_mem_pci_info = {
+ .base_name = TYPE_VIRTIO_MEM_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)
+{
+ virtio_pci_types_register(&virtio_mem_pci_info);
+}
+type_init(virtio_mem_pci_register_types)