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[79.178.2.214]) by smtp.gmail.com with ESMTPSA id y197sm7412603qka.65.2020.02.25.07.14.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Feb 2020 07:14:04 -0800 (PST) Date: Tue, 25 Feb 2020 10:14:00 -0500 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Subject: [PULL 19/32] virtio-iommu-pci: Add virtio iommu pci support Message-ID: <20200225151210.647797-20-mst@redhat.com> References: <20200225151210.647797-1-mst@redhat.com> MIME-Version: 1.0 In-Reply-To: <20200225151210.647797-1-mst@redhat.com> X-Mailer: git-send-email 2.24.1.751.gd10ce2899c X-Mutt-Fcc: =sent X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= , Eduardo Habkost , Jean-Philippe Brucker , Eric Auger , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Eric Auger This patch adds virtio-iommu-pci, which is the pci proxy for the virtio-iommu device. Currently non DT integration is not yet supported by the kernel. So the machine must implement a hotplug handler for the virtio-iommu-pci device that creates the device tree iommu-map bindings as documented in kernel documentation: Documentation/devicetree/bindings/virtio/iommu.txt Signed-off-by: Eric Auger Reviewed-by: Jean-Philippe Brucker Reviewed-by: Michael S. Tsirkin Message-Id: <20200214132745.23392-9-eric.auger@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/pci/pci.h | 1 + include/hw/virtio/virtio-iommu.h | 1 + hw/virtio/virtio-iommu-pci.c | 104 +++++++++++++++++++++++++++++++ qdev-monitor.c | 1 + hw/virtio/Makefile.objs | 1 + 5 files changed, 108 insertions(+) create mode 100644 hw/virtio/virtio-iommu-pci.c diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index 2acd8321af..cfedf5a995 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -86,6 +86,7 @@ extern bool pci_available; #define PCI_DEVICE_ID_VIRTIO_9P 0x1009 #define PCI_DEVICE_ID_VIRTIO_VSOCK 0x1012 #define PCI_DEVICE_ID_VIRTIO_PMEM 0x1013 +#define PCI_DEVICE_ID_VIRTIO_IOMMU 0x1014 =20 #define PCI_VENDOR_ID_REDHAT 0x1b36 #define PCI_DEVICE_ID_REDHAT_BRIDGE 0x0001 diff --git a/include/hw/virtio/virtio-iommu.h b/include/hw/virtio/virtio-io= mmu.h index ae88f730cf..6f67f1020a 100644 --- a/include/hw/virtio/virtio-iommu.h +++ b/include/hw/virtio/virtio-iommu.h @@ -25,6 +25,7 @@ #include "hw/pci/pci.h" =20 #define TYPE_VIRTIO_IOMMU "virtio-iommu-device" +#define TYPE_VIRTIO_IOMMU_PCI "virtio-iommu-device-base" #define VIRTIO_IOMMU(obj) \ OBJECT_CHECK(VirtIOIOMMU, (obj), TYPE_VIRTIO_IOMMU) =20 diff --git a/hw/virtio/virtio-iommu-pci.c b/hw/virtio/virtio-iommu-pci.c new file mode 100644 index 0000000000..3dfbf55b47 --- /dev/null +++ b/hw/virtio/virtio-iommu-pci.c @@ -0,0 +1,104 @@ +/* + * Virtio IOMMU PCI Bindings + * + * Copyright (c) 2019 Red Hat, Inc. + * Written by Eric Auger + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 or + * (at your option) any later version. + */ + +#include "qemu/osdep.h" + +#include "virtio-pci.h" +#include "hw/virtio/virtio-iommu.h" +#include "hw/qdev-properties.h" +#include "qapi/error.h" +#include "hw/boards.h" + +typedef struct VirtIOIOMMUPCI VirtIOIOMMUPCI; + +/* + * virtio-iommu-pci: This extends VirtioPCIProxy. + * + */ +#define VIRTIO_IOMMU_PCI(obj) \ + OBJECT_CHECK(VirtIOIOMMUPCI, (obj), TYPE_VIRTIO_IOMMU_PCI) + +struct VirtIOIOMMUPCI { + VirtIOPCIProxy parent_obj; + VirtIOIOMMU vdev; +}; + +static Property virtio_iommu_pci_properties[] =3D { + DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **err= p) +{ + VirtIOIOMMUPCI *dev =3D VIRTIO_IOMMU_PCI(vpci_dev); + DeviceState *vdev =3D DEVICE(&dev->vdev); + + if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev))) { + MachineClass *mc =3D MACHINE_GET_CLASS(qdev_get_machine()); + + error_setg(errp, + "%s machine fails to create iommu-map device tree bindi= ngs", + mc->name); + error_append_hint(errp, + "Check you machine implements a hotplug handler = " + "for the virtio-iommu-pci device\n"); + error_append_hint(errp, "Check the guest is booted without FW or w= ith " + "-no-acpi\n"); + return; + } + qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); + object_property_set_link(OBJECT(dev), + OBJECT(pci_get_bus(&vpci_dev->pci_dev)), + "primary-bus", errp); + object_property_set_bool(OBJECT(vdev), true, "realized", errp); +} + +static void virtio_iommu_pci_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc =3D DEVICE_CLASS(klass); + VirtioPCIClass *k =3D VIRTIO_PCI_CLASS(klass); + PCIDeviceClass *pcidev_k =3D PCI_DEVICE_CLASS(klass); + k->realize =3D virtio_iommu_pci_realize; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + device_class_set_props(dc, virtio_iommu_pci_properties); + pcidev_k->vendor_id =3D PCI_VENDOR_ID_REDHAT_QUMRANET; + pcidev_k->device_id =3D PCI_DEVICE_ID_VIRTIO_IOMMU; + pcidev_k->revision =3D VIRTIO_PCI_ABI_VERSION; + pcidev_k->class_id =3D PCI_CLASS_OTHERS; + dc->hotpluggable =3D false; +} + +static void virtio_iommu_pci_instance_init(Object *obj) +{ + VirtIOIOMMUPCI *dev =3D VIRTIO_IOMMU_PCI(obj); + + virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), + TYPE_VIRTIO_IOMMU); +} + +static const VirtioPCIDeviceTypeInfo virtio_iommu_pci_info =3D { + .base_name =3D TYPE_VIRTIO_IOMMU_PCI, + .generic_name =3D "virtio-iommu-pci", + .transitional_name =3D "virtio-iommu-pci-transitional", + .non_transitional_name =3D "virtio-iommu-pci-non-transitional", + .instance_size =3D sizeof(VirtIOIOMMUPCI), + .instance_init =3D virtio_iommu_pci_instance_init, + .class_init =3D virtio_iommu_pci_class_init, +}; + +static void virtio_iommu_pci_register(void) +{ + virtio_pci_types_register(&virtio_iommu_pci_info); +} + +type_init(virtio_iommu_pci_register) + + diff --git a/qdev-monitor.c b/qdev-monitor.c index 8ce71a206b..dbbe92dfa1 100644 --- a/qdev-monitor.c +++ b/qdev-monitor.c @@ -67,6 +67,7 @@ static const QDevAlias qdev_alias_table[] =3D { { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_S390X }, { "virtio-input-host-pci", "virtio-input-host", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, + { "virtio-iommu-pci", "virtio-iommu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X= }, { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_S390X }, { "virtio-keyboard-pci", "virtio-keyboard", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, diff --git a/hw/virtio/Makefile.objs b/hw/virtio/Makefile.objs index 2fd9da7410..4e4d39a0a4 100644 --- a/hw/virtio/Makefile.objs +++ b/hw/virtio/Makefile.objs @@ -29,6 +29,7 @@ obj-$(CONFIG_VIRTIO_INPUT_HOST) +=3D virtio-input-host-pc= i.o obj-$(CONFIG_VIRTIO_INPUT) +=3D virtio-input-pci.o obj-$(CONFIG_VIRTIO_RNG) +=3D virtio-rng-pci.o obj-$(CONFIG_VIRTIO_BALLOON) +=3D virtio-balloon-pci.o +obj-$(CONFIG_VIRTIO_IOMMU) +=3D virtio-iommu-pci.o obj-$(CONFIG_VIRTIO_9P) +=3D virtio-9p-pci.o obj-$(CONFIG_VIRTIO_SCSI) +=3D virtio-scsi-pci.o obj-$(CONFIG_VIRTIO_BLK) +=3D virtio-blk-pci.o --=20 MST