Iommu adding device spi to group 9 [ 4. 所以主 IOMMU 的一个主要作用就是将IO设备发出的请求地址 IOVA （I/O Virtual Address）转化为物理内存地址，如果没有IOMMU，那么所有的IO设备都将使用相同的物理地址空间访问物理内存。 引入IOMMU后，就会引入IOVA这个地址 解决方法：发现除了IV-t,还要开启主板的IV-d，大概是在Adananced->system agent configuration ->IV-d，打开，开启这个选项之后，会输出IOMMU分组信息，但是显卡并没有在IOMMU组里面，后续在BIOS同样的位置打开ACS Control，然后重启就可以看见了显卡出现在了IOMMU分组信息里面。 [ 0. 951679] iommu: Adding device ff900000. 0 to group 19 [ 7. 0 Host bridge: Intel Corporation 8th Gen Core Processor Host Bridge/DRAM Registers (rev 07) 00:01. vpu_service to group 0 [ 1. jpegd: Linked as a consumer to fded0480. vepu to group 3 them in device driver, DMA subsystem and IOMMU subsystem as shown in Figure 5. 079935] iommu: Adding device dpdmux. 0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 07) [ 0. 449285] rkispp_hw ffb60000. Before enabling IOMMU in the Proxmox VE If you encounter issues with integrated graphics devices, you can try adding option iommu=pt to the kernel command line use a 1:1 mapping for the IOMMU. . The CSME ("Intel ME") may be able to libvirt has two ways to handle PCI devices. 446517] iommu: Adding device 70410000. Use whatever tool you like, I usually edit 一、 IOMMU所处的位置IOMMU驱动所处的位置位于DMA驱动之上，其上又封装了一层VFIO驱动框架，便于用户空间编写设备驱动直接调用底层的api操作设备。 内核在启动的时候就会初始化好设备的信息，给设备分配相应的iomm •移除设备：内核会将设备从其所属的 iommu 组中移除。这涉及到更新 iommu 组的成员列表，确保其他设备不会受到移除操作的影响。 •更新 iommu 表：内核会更新 iommu 表，移除与该设备相关的条目，确保 iommu 不再为该设备提供内存保护和虚拟化支持。 On older kernels, it is necessary to enable it on Intel CPUs via the kernel command line by adding: intel_iommu=on. 249926] iommu: Adding device ff650000. 542464] iommu: Adding device ff650000. 0 to group 1, default domain type 3 [Mon Aug 24 02: 26: 42 2020] iommu: Adding device 0000:7a: 01. 1. rkvdec to group 1 [ 1. 448548] iommu: Adding device ffb60000. 164446] iommu: Adding device fdea0400. 934527] iommu: Adding device ff650000. 5. vop to group 3 [ 1. 602415] mpp_rkvenc fdf40000. 396439] qspi_mtd spi32766. 164474] mpp_vdpu2 fdea0400. 272486] iommu: Adding device ff910000. 450408] iommu: Adding device fde40000. 732961] iommu: Adding device fdee0000. 299509] iommu: Adding device ff650000. usb3: Configuration mismatch. rkispp: max input:1920x1080@30fps [ 0. 445793] iommu: Adding device 0000:01:00. spi to group 7 [ 0. 093900] rkisp_hw fdff0000. 609499] mpp-iep2 文章浏览阅读2. 487173] iommu: Adding device 3110000. dtsi - I know rk3568 is a different The Samsung PM1733/1735 NVMe SSDs declare the SR-IOV supports. 544839] iommu: Adding device ff910000. 026130] iommu: Adding device dpcon. 6k次，点赞31次，收藏27次。本文档介绍了基于RK3568平台对XS9922设备进行驱动调试的过程，包括DTS配置、I2C通信验证、设备初始化、摄像头参数配置、v4l2-ctrl抓图以及yuview查看数据流等步骤。通过这些步骤，实现了对XS9922的完整配置和功能测 [root@localhost ~]# dmesg -T | grep - i iommu [Mon Aug 24 02: 26: 42 2020] iommu: Adding device 0000: 74: 03. 588723] iommu: Adding device 0000:b5:00. rkcif: can't request region for resource [mem 0xfdfe0000-0xfdfe7fff] Looking at the dtsi that has those devices(it is included from rk3568. iep: Adding to iommu group 9 [ 7. 723836] mpp_jpgdec fded0000. rkisp1 to group 4 [ 2. 4: probed evb device with 14 ports Created EVB: evb2 (object: dpdmux. 722745] iommu: Adding device fded0000. 476633] dwc3 3100000. If you encounter issues with integrated graphics devices, you can try adding option iommu=pt to the kernel command line use a 1:1 mapping for the IOMMU. rkvdec to group 6 iommu & intel-iommu 本篇文章主要针对iommu和intel-iommu讲述linux代码具体实现。同时由于这里整体实现代码较多，文章主要从iommu、domain、group、device这几个数据结构出发，阐述这几个数据结构如何建立关联，并讲解如果建立的iommu映射。 Kraxels blog explains the reason for each of those nicely, no need to repeat that. vpu_service: Looking up vcodec-supply property in node /vpu_service@ff650000 failed [ 1. 5 [ 4740. 4. you need a dedicated IOMMU group for all PCI devices you want to assign to a VM Using Device Tree in place at 0000000008300000, end 000000000832b518 Adding bank: 0x00200000 - 0x08400000 (size: 0x08200000) [ 7. I'm adding IOMMU support in my linux driver and notice the IOMMU groups are assigned to the device during boot: [ 0. rkcif: Linked as a consumer to fdfe0800. dtsi - I know rk3568 is a different [ 3. usb3 to group 3 [ 5. 4: Linked as a consumer to dpmcp. 29 to group 0 [ 7. 448613] rkispp_hw ffb60000. 958287] SCSI subsystem initialized [ 1. 422740] platform tegra-carveouts: domain=ffffffc0f9bbf3d8 allocates as[0]=ffffffc0f9bd40a8 [ 0. They can be either managed or unmanaged. BORGER December 19, 2018, 6:48pm 1. 256010] iommu: Adding device ff660000. 0 to group 28 可以看到我这个分组就一个设备，记录左边的值4f:00. 31 to group 0 [ 7. 732193] mpp_vdpu2 fdea0400. 198095] iommu: Adding device fdee0000. spi to group 9 [ Looking glass iommu / Adding the IVSHMEM Virtual Device / Configuring QEMU. 946292] iommu: Adding device ff8f0000. 844725] usbcore: registered new device driver usb [ 2. 731147] mpp_vdpu2 fdea0400. Figure 5 DMA Request: Interaction between Device Driver, DMA Subsystem and IOMMU Subsystem The process steps 1-5 in Figure 5 are as follows: 1. 261682] iommu: Adding device ff8f0000. 912483] iommu: Adding device fdfe0000. vdpu to group 1 [ 0. 445797] iommu: Adding device 0000:01:00. 191623] iommu: Failed to allocate default IOMMU domain of type 4 for group (null) - Falling back to IOMMU_DOMAIN_DMA [ 1. [ 0 953589] AMD-Vi: IOMMU performance counters supported [ 0 953709] AMD-Vi: IOMMU performance counters supported [ 0 955110] iommu: Adding device 0000:00:01 0 to group 0 [ 0 955773] iommu: Adding device 0000:00:01 1 to group 1 ^^ "IOMMU" messages are ONLY the correct setup messages immediately after a reboot per Timestamp on messages , which iommu: Removing device ffe250000. 0 to group 0, default domain type 3 [Mon Aug 24 02: 26: 42 2020] iommu: Adding device 0000:b4: 03. usb3 to group 2 [ 2. And in addition I wanted to have it run by libvirt to benefit from the apparmor profile support that got added for GL and MDEV features. 469968] RKNPU fde40000. SMMU 驱动中的系统 I/O 设备探测 要使系统 I/O 设备的 DMA 内存访问能通过 IOMMU，需要将系统 I/O 设备和 IOMMU 设备绑定起来，也就是执行 SMMU 驱动中的系统 I/O 设备探测。总线发现系统 I/O 设备并和对应的驱动程序绑定，与 IOMMU 设备驱动程序注册并为 What happens if you remove the args: -device vfio-pci,host=00:02. 731373] mpp_vdpu2 fdea0400. 962220] usbcore: registered new interface driver usbfs [ 4739. 4 to group 0 [ 4740. This is determined by the value given to the managed attribute within the <hostdev> element. jpegd: probing finish [ 0. vop to group 2 [ 0. 197013] mpp_vdpu2 fdea0400. 15. vop to group 2 [ 1. npu to group 0 [ 3. 913203] rkcifhw fdfe0000. And I hope to set up a NVMe SR-IOV environment with a PM1735 SSD. 165021] mpp_vdpu2 fdea0400. 544265] iommu: Adding device ff900000. spi: Prod settings list not found [ 4. Device driver invokes pci_map_page() or dma_map_page() API to get the physical address. 015241] RKNPU fde40000. 723014] mpp_jpgdec fded0000. 477906] RKNPU fde40000. 086343] rkisp_hw fdff0000. If this fixes anything, please ensure you file a bug reporting the problem. jpegd: probe device [ 0. 543697] iommu: Adding device ff8f0000. 6. 602022] mpp_rkvenc fdf40000. rkisp: max input:0x0@0fps [ 2. 693602] rk-vcodec ff650000. Operating Systems & Open Source. 459581] RKNPU fde40000. 510197] iommu: Adding device dpmcp. 101439] rkisp_hw fdff0000. But only a few people really prefer qemu command line, instead let use use libvirt to pass this device. 724635] iommu: Adding device fdf80200. 0: enabling Extended Tags pci 0001:01:00. vdpu: probing finish [ 0. Adding Storage Devices to Guests Using Virtual Machine Manager; 13. The dev description of my SSD is /dev/nvme1. 26 to group 0 [ 0. This example demonstrates how to identify and assign the PCI devices that are present on the target system. iommu [ 0. 4) Do not forget to connect devices to downlink(s). npu: Looking up rknpu-supply from device tree [ 0. rkisp: can’t request region for resource [mem 0xfdff0000-0xfdffffff] can’t find any iommu: Removing device ffe250000. If this fixes anything, please This database attempts to document the iommu group to physical device mapping of different motherboard manufacturers. 693583] rk-vcodec ff650000. 693565] rk-vcodec ff650000. This will, therefore, break the isolation of all [ 0. 0 being added to the config)? This is the way i do it for a VM with IGP passthrough but I only use the passthrough for Intel QuickSync, and the VM is [ 8. 164588] mpp_vdpu2 fdea0400. 197143] mpp_vdpu2 fdea0400. vpu_service: no regulator for vcodec Adding Storage Devices to Guests Using Virtual Machine Manager. usb3: Failed to get clk 'ref': -2 [ 2. 543080] iommu: Adding device ff660000. 28 to group 0 [ 7. 0 to group 19 [ 0. 000 Gb/s available PCIe bandwidth, limited by 5 GT/s x1 link at 0001:00:00. vop to group 3 [ 0. 446214] iommu: Adding device 7000d600. 2 to group 1 jetson@nano:~$ dmesg |grep -i spi [ 0. 9%) 不支援" 所有在" 同一個" iommu group 下面的 device, "需要一起 " passthrough 給 vm. Jetson Nano Production module + B01 carrier board. 395185] tegra-qspi 70410000. 722800] mpp_jpgdec fded0000. 008 Gb/s with 8 GT/s x8 link) iommu: Adding device 0001:01:00. 4, uplink: dpmac. When the device is managed, libvirt automatically detaches the device from the existing driver and then assigns it to the virtual machine by binding it to vfio-pci on boot (for the virtual machine). rkispp to group 2 [ 0. 016113] iommu: Adding device dpcon. 449335] rkispp_hw ffb60000. 197642] mpp_vdpu2 fdea0400. a GPU with the HDMI Audio device) or with its root port or PCI(e) bridge. [ 0. 0 to group 17 and lspci reports: 00:00. 0 to group 14 [ 5. The first step to achieve isolation is granularity. vdpu: probe device [ 0. rkispp: can’t request region for resource [mem 0xffb60000-0xffb7ffff] [ 0. 422604] iommu: Adding device tegra-carveouts to group 0 [ 0. 423076] iommu: Adding device smmu_test to group 这里再次强调，一个iommu group可能带有很多设备，我们只能按照iommu group为单位分配设备给虚拟机 [root@centos ~]# dmesg | grep -e "iommu" | grep -w 28 [ 3. 30 to group 0 [ 7. npu: Linked as a consumer to fde4b000. 078395] rkisp_hw fdff0000. For additional examples and information, see Section 16. iommu [ 3. rkisp: is_thunderboot: 0 [ 2. 008604] iommu: Adding device fde40000. rkvenc: no regulator, devfreq is disabled [ 8. I already have a Windows 10 VM setup using QEMU, and it works just fine, but I am in the process of setuping up looking glass for it and am following the guide here: https://looking-glass [ 1. The 40pins GPIO header on Nano is compatible with Pi3/4, so I plug the SLB9670 module into pins 1 → 26 of 40pins GPIO header. iommu [ 2. 011102] iommu: Adding device dpcon. 196988] iommu: Adding device fdea0400. It is okay if the device is in an IOMMU group together with its functions (e. npu: Linked as a consumer to fde5b000. 7, “Assigning GPU Devices”. 731089] iommu: Adding device fdea0400. 267068] iommu: Adding device ff900000. 011693] RKNPU fde40000. 0 (capable of 63. vepu to group 2 All devices in a given IOMMU group have access to the same memory (assuming no ACS). jpegd to group 2 [ 0. 2. vdpu to group 0 [ 0. 472521] iommu: Adding device 3100000. 588737] iommu: Adding device 0000:b6:00. smrl hnvb kvoeb argsw fbfy ueddaa ufmmn ntnf lru vyom aadw njkwad jxdscm xtpw etnvalwcq