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* virtio-pci: implement support for extended featuresPaolo Abeni2025-10-041-1/+1
| | | | | | | | | | | | | | | | | | | | Extend the features configuration space to 128 bits. If the virtio device supports any extended features, allow the common read/write operation to access all of it, otherwise keep exposing only the lower 64 bits. On migration, save the 128 bit version of the features only if the upper bits are non zero. Relay on reset to clear all the feature space before load. Reviewed-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp> Acked-by: Jason Wang <jasowang@redhat.com> Acked-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Tested-by: Lei Yang <leiyang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-ID: <c0b81601f65b41ca8310eba8f05e2dcf3702de89.1758549625.git.pabeni@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* hw/virtio/virtio-pci: Remove VIRTIO_PCI_FLAG_DISABLE_PCIE definitionPhilippe Mathieu-Daudé2025-05-301-4/+0
| | | | | | | | | | | | | | | | VIRTIO_PCI_FLAG_DISABLE_PCIE was only used by the hw_compat_2_4[] array, via the 'x-disable-pcie=false' property. We removed all machines using that array, lets remove all the code around VIRTIO_PCI_FLAG_DISABLE_PCIE (see commit 9a4c0e220d8 for similar VIRTIO_PCI_FLAG_* enum removal). Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com> Message-ID: <20250512083948.39294-9-philmd@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
* hw/virtio/virtio-pci: Remove VIRTIO_PCI_FLAG_MIGRATE_EXTRA definitionPhilippe Mathieu-Daudé2025-05-301-4/+0
| | | | | | | | | | | | | | VIRTIO_PCI_FLAG_MIGRATE_EXTRA was only used by the hw_compat_2_4[] array, via the 'migrate-extra=true' property. We removed all machines using that array, lets remove all the code around VIRTIO_PCI_FLAG_MIGRATE_EXTRA. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Message-ID: <20250512083948.39294-8-philmd@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
* virtio-pci: Implement SR-IOV PFAkihiko Odaki2025-05-141-0/+1
| | | | | | | | | | | Allow user to attach SR-IOV VF to a virtio-pci PF. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-Id: <20250314-sriov-v9-6-57dae8ae3ab5@daynix.com> Tested-by: Yui Washizu <yui.washidu@gmail.com> Tested-by: Pasha Tatashin <pasha.tatashin@soleen.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* qom: Constify TypeInfo::interfacesPhilippe Mathieu-Daudé2025-04-251-1/+1
| | | | | | Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20250424194905.82506-6-philmd@linaro.org>
* qom: Have class_init() take a const data argumentPhilippe Mathieu-Daudé2025-04-251-1/+1
| | | | | | | | | | Mechanical change using gsed, then style manually adapted to pass checkpatch.pl script. Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20250424194905.82506-4-philmd@linaro.org>
* virtio-pci: fix memory_region_find for VirtIOPCIRegion's MRGao Shiyuan2024-11-041-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As shown below, if a virtio PCI device is attached under a pci-bridge, the MR of VirtIOPCIRegion does not belong to any address space. So memory_region_find cannot be used to search for this MR. Introduce the virtio-pci and pci_bridge address spaces to solve this problem. Before: memory-region: pci_bridge_pci 0000000000000000-ffffffffffffffff (prio 0, i/o): pci_bridge_pci 00000000fe840000-00000000fe840fff (prio 1, i/o): virtio-net-pci-msix 00000000fe840000-00000000fe84003f (prio 0, i/o): msix-table 00000000fe840800-00000000fe840807 (prio 0, i/o): msix-pba 0000380000000000-0000380000003fff (prio 1, i/o): virtio-pci 0000380000000000-0000380000000fff (prio 0, i/o): virtio-pci-common-virtio-net 0000380000001000-0000380000001fff (prio 0, i/o): virtio-pci-isr-virtio-net 0000380000002000-0000380000002fff (prio 0, i/o): virtio-pci-device-virtio-net 0000380000003000-0000380000003fff (prio 0, i/o): virtio-pci-notify-virtio-net After: address-space: virtio-pci-cfg-mem-as 0000380000000000-0000380000003fff (prio 1, i/o): virtio-pci 0000380000000000-0000380000000fff (prio 0, i/o): virtio-pci-common-virtio-net 0000380000001000-0000380000001fff (prio 0, i/o): virtio-pci-isr-virtio-net 0000380000002000-0000380000002fff (prio 0, i/o): virtio-pci-device-virtio-net 0000380000003000-0000380000003fff (prio 0, i/o): virtio-pci-notify-virtio-net address-space: pci_bridge_pci_mem 0000000000000000-ffffffffffffffff (prio 0, i/o): pci_bridge_pci 00000000fe840000-00000000fe840fff (prio 1, i/o): virtio-net-pci-msix 00000000fe840000-00000000fe84003f (prio 0, i/o): msix-table 00000000fe840800-00000000fe840807 (prio 0, i/o): msix-pba 0000380000000000-0000380000003fff (prio 1, i/o): virtio-pci 0000380000000000-0000380000000fff (prio 0, i/o): virtio-pci-common-virtio-net 0000380000001000-0000380000001fff (prio 0, i/o): virtio-pci-isr-virtio-net 0000380000002000-0000380000002fff (prio 0, i/o): virtio-pci-device-virtio-net 0000380000003000-0000380000003fff (prio 0, i/o): virtio-pci-notify-virtio-net Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2576 Fixes: ffa8a3e3b2e6 ("virtio-pci: Add lookup subregion of VirtIOPCIRegion MR") Co-developed-by: Zuo Boqun <zuoboqun@baidu.com> Signed-off-by: Zuo Boqun <zuoboqun@baidu.com> Co-developed-by: Wang Liang <wangliang44@baidu.com> Signed-off-by: Wang Liang <wangliang44@baidu.com> Signed-off-by: Gao Shiyuan <gaoshiyuan@baidu.com> Message-Id: <20241030131324.34144-1-gaoshiyuan@baidu.com> Tested-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* Revert "virtio-pci: Implement SR-IOV PF"Michael S. Tsirkin2024-08-011-1/+0
| | | | | | This reverts commit 3f868ffb0bae0c4feafabe34a371cded57fe3806. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* virtio-pci: Implement SR-IOV PFAkihiko Odaki2024-07-221-0/+1
| | | | | | | | | Allow user to attach SR-IOV VF to a virtio-pci PF. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-Id: <20240715-sriov-v5-6-3f5539093ffc@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* virtio-pci: implement No_Soft_Reset bitJiqian Chen2024-07-011-0/+5
| | | | | | | | | | | | | | | | | | | | | In current code, when guest does S3, virtio-gpu are reset due to the bit No_Soft_Reset is not set. After resetting, the display resources of virtio-gpu are destroyed, then the display can't come back and only show blank after resuming. Implement No_Soft_Reset bit of PCI_PM_CTRL register, then guest can check this bit, if this bit is set, the devices resetting will not be done, and then the display can work after resuming. No_Soft_Reset bit is implemented for all virtio devices, and was tested only on virtio-gpu device. Set it false by default for safety. Signed-off-by: Jiqian Chen <Jiqian.Chen@amd.com> Message-Id: <20240606102205.114671-3-Jiqian.Chen@amd.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* Revert "hw/virtio: Add support for VDPA network simulation devices"Michael S. Tsirkin2024-04-091-5/+0
| | | | | | | | | | | | | | | This reverts commit cd341fd1ffded978b2aa0b5309b00be7c42e347c. The patch adds non-upstream code in include/standard-headers/linux/virtio_pci.h which would make maintainance harder. Revert for now. Suggested-by: Jason Wang <jasowang@redhat.com> Message-Id: <df6b6b465753e754a19459e8cd61416548f89a42.1712569644.git.mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* hw/virtio: Add support for VDPA network simulation devicesHao Chen2024-03-121-0/+5
| | | | | | | | | | | | | This patch adds support for VDPA network simulation devices. The device is developed based on virtio-net and tap backend, and supports hardware live migration function. For more details, please refer to "docs/system/devices/vdpa-net.rst" Signed-off-by: Hao Chen <chenh@yusur.tech> Message-Id: <20240221073802.2888022-1-chenh@yusur.tech> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* hw/virtio: Add VirtioPCIDeviceTypeInfo::instance_finalize fieldPhilippe Mathieu-Daudé2023-11-271-0/+1
| | | | | | | | | | | | The VirtioPCIDeviceTypeInfo structure, added in commit a4ee4c8baa ("virtio: Helper for registering virtio device types") got extended in commit 8ea90ee690 ("virtio: add class_size") with the @class_size field. Do similarly with the @instance_finalize field. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20231121174051.63038-2-philmd@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* virtio: Add shared memory capabilityDr. David Alan Gilbert2023-10-161-0/+4
| | | | | | | | | | | | | | | | | Define a new capability type 'VIRTIO_PCI_CAP_SHARED_MEMORY_CFG' to allow defining shared memory regions with sizes and offsets of 2^32 and more. Multiple instances of the capability are allowed and distinguished by a device-specific 'id'. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Antonio Caggiano <antonio.caggiano@collabora.com> Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org> Tested-by: Alyssa Ross <hi@alyssa.is> Tested-by: Huang Rui <ray.huang@amd.com> Tested-by: Akihiko Odaki <akihiko.odaki@daynix.com> Acked-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
* virtio-pci: add support for configure interruptCindy Lu2023-01-081-1/+3
| | | | | | | | | | | | Add process to handle the configure interrupt, The function's logic is the same with vq interrupt.Add extra process to check the configure interrupt Signed-off-by: Cindy Lu <lulu@redhat.com> Message-Id: <20221222070451.936503-11-lulu@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* virtio: get class_id and pci device id by the virtio idLongpeng2022-12-211-0/+5
| | | | | | | | | | | | | Add helpers to get the "Transitional PCI Device ID" and "class_id" of the device specified by the "Virtio Device ID". These helpers will be used to build the generic vDPA device later. Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Longpeng <longpeng2@huawei.com> Message-Id: <20221215134944.2809-2-longpeng2@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* virtio-pci: support queue resetXuan Zhuo2022-11-071-0/+5
| | | | | | | | | | | | | | | | | | | | PCI devices support vq reset. Based on this function, the driver can adjust the size of the ring, and quickly recycle the buffer in the ring. The migration of the virtio devices will not happen during a reset operation. This is becuase the global iothread lock is held. Migration thread also needs the lock. As a result, when migration of virtio devices starts, the 'reset' status of VirtIOPCIQueue will always be 0. Thus, we do not need to add it in vmstate_virtio_pci_modern_queue_state. Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20221017092558.111082-6-xuanzhuo@linux.alibaba.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* hw/virtio: move virtio-pci.h into shared include spaceAlex Bennée2022-05-161-0/+255
This allows other device classes that will be exposed via PCI to be able to do so in the appropriate hw/ directory. I resisted the temptation to re-order headers to be more aesthetically pleasing. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200925125147.26943-4-alex.bennee@linaro.org> Message-Id: <20220321153037.3622127-2-alex.bennee@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>