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| author | Open-IOV <dev@open-iov.org> | 2026-09-23 05:44:08 -0400 |
|---|---|---|
| committer | Open-IOV <dev@open-iov.org> | 2026-09-23 05:46:43 -0400 |
| commit | 2302fc09080bad51c73f293294e19fd4db464eb0 (patch) | |
| tree | c722d186347fdef5a34131e9e143b1549b1daf8e /wiki/open-iov.org/index.php?title=OpenRM&action=edit.html | |
| download | open-iov-2302fc09080bad51c73f293294e19fd4db464eb0.tar.gz open-iov-2302fc09080bad51c73f293294e19fd4db464eb0.zip | |
Open-IOV: initial public release
Open-IOV virtualizes NVIDIA GPUs so that unmodified guest drivers run with
real GPU functionality - CUDA first, 3D and video to follow - on unmodified
hosts, without a proprietary vGPU license and without patching any driver,
firmware or hypervisor.
Core principle: emulate the interface, pass through the work.
kernel/ open-iov-vfio.ko - host VFIO mdev driver: virtual GPU device
(PCI config space, BAR shadows, MSI-X), GSP boot emulation,
GSP-RM message-queue/RPC emulation, memory model (GPU-VA to
guest-PA discovery) and the semaphore-completion service that
advances guest UVM progress.
userspace/ libiov.so management API and examples.
tools/ guest diagnostics, firmware analysis wrappers, RM probes.
scripts/ stack manager, VM harness, build/load/test automation.
config/ hardware/version profiles (the portability surface).
docs/ documentation tree - start at docs/README.md.
wiki/ long-form firmware and protocol deep dives.
Status: initialization works end to end for a stock 570.144 Linux guest on
Turing (TU104): driver probe, nvidia-smi, the full GSP-RM control battery,
object creation and the early CUDA/UVM start-up path. GPU work forwarding -
the step that makes CUDA kernels execute on real hardware - is the active
work item; see docs/04-implementation/01-known-knowns-and-unknowns.md.
License: BSD-3-Clause for the project; GPL-2.0 for kernel modules that link
GPL-only kernel interfaces. See LICENSE and docs/09-reference/legal-and-licensing.md.
Diffstat (limited to 'wiki/open-iov.org/index.php?title=OpenRM&action=edit.html')
| -rw-r--r-- | wiki/open-iov.org/index.php?title=OpenRM&action=edit.html | 484 |
1 files changed, 484 insertions, 0 deletions
diff --git a/wiki/open-iov.org/index.php?title=OpenRM&action=edit.html b/wiki/open-iov.org/index.php?title=OpenRM&action=edit.html new file mode 100644 index 0000000..29eb827 --- /dev/null +++ b/wiki/open-iov.org/index.php?title=OpenRM&action=edit.html @@ -0,0 +1,484 @@ +<!DOCTYPE html> +<html class="client-nojs" lang="en" dir="ltr"> +<head> +<meta charset="UTF-8"/> +<title>View source for OpenRM - Open-IOV</title> +<script>document.documentElement.className="client-js";RLCONF={"wgBreakFrames":!0,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"f5476a3376cc898f3e3470d4","wgCSPNonce":!1,"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":!1,"wgNamespaceNumber":0,"wgPageName":"OpenRM","wgTitle":"OpenRM","wgCurRevisionId":23739,"wgRevisionId":0,"wgArticleId":40,"wgIsArticle":!1,"wgIsRedirect":!1,"wgAction":"edit","wgUserName":null,"wgUserGroups":["*"],"wgCategories":[],"wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"OpenRM","wgRelevantArticleId":40,"wgIsProbablyEditable":!1,"wgRelevantPageIsProbablyEditable":!1,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"}, +"wgEditSubmitButtonLabelPublish":!1};RLSTATE={"site.styles":"ready","noscript":"ready","user.styles":"ready","user":"ready","user.options":"loading","skins.vector.styles.legacy":"ready","jquery.tablesorter.styles":"ready","jquery.makeCollapsible.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready"};RLPAGEMODULES=["mediawiki.action.edit.collapsibleFooter","site","mediawiki.page.ready","jquery.tablesorter","jquery.makeCollapsible","skins.vector.legacy.js","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader"];</script> +<script>(RLQ=window.RLQ||[]).push(function(){mw.loader.implement("user.options@1hzgi",function($,jQuery,require,module){/*@nomin*/mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); 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These classes can also represent physical resources or engines. + +===Alloc (Client)=== +This is analogous to calling an object constructor in a higher level programming language, such as C#. + +The data for this call requires the following components: + +#hRoot - RM Client Id (given by the kernel module for an individual process that is interacting with the kernel module). +#hObjectParent - Parent of the resource we are allocating. +#hObjectNew - New object to allocate. +#hClass - Class of the object we are dealing with. +#pAllocParams - Pointer to values passed into the constructor call. +#status - Status of the constructor call (did it succeed or fail) + +===Alloc Memory 64=== +This creates a CPU's mapping to a resource. + +The data for this call requires the following components: + +#hRoot - RM Client Id (given by the kernel module for an individual process that is interacting with the kernel module). +#hObjectParent - Parent of the resource we create the CPU mapping to. +#hObjectNew - Mapping object resource id. +#hClass - Class of the mapped object. +#flags - Flags to use on the mapped object. +#pMemory - pointer for the memory to map. +#pLimit - Edge of memory map. +#status - Status of the constructor call. + +NOTE: Seems to be deprecated. + +===Control=== +This is a control command which is analogous to calling a method on a class. + +The data for this call requires the following components: + +#hClient - RM Client Id. +#hObject - Object id. +#cmd - Method to call. +#params - Parameters into this method. +#paramsSize - Size of the params. +#status - Status of the control call. + +NOTE: The control will overwrite the object we pass in over the params pointer. + +===Dup Object=== +Duplicates the object, or clones the object, which is a deep copy. This procedure can be used across processes in order to produce shared memory. + +The data for this call requires the following components: + +#hClient - RM Client Id. +#hParent - Parent of the object. +#hObject - Object destination for duplicating. +#hClientSrc - Client source id. +#hObjectSrc - Object source. +#flags - Flags to use. +#status - Status of the duplication. + +===Free=== +Frees an object from the object tree. + +The data for this call requires the following components: + +#hRoot - Client Id. +#hObjectParent - Parent of the object. +#hObjectOld - Object to call the destructor on. +#status - Status of the free. + +===Vid Heap Control=== +TODO: Figure out what this does. + +NOTE: Seems to be deprecated. + +===Map Memory=== +This seems to be the same as alloc memory but seems to be used more often. + +The data for this call requires the following components: + +#hClient - Client Id. +#hDevice - Device id. +#hMemory - Memory resource. +#offset - Offset of the memory. +#length - Length of the memory. +#pLinearAddress - Pointer for returned address. +#status - Status of the map memory. +#flags - Flags to use. + +===Unmap Memory=== +This unmaps the CPU memory mapping from the resource. + +The data for this call requires the following components: + +#hClient - Client Id. +#hDevice - Device Id. +#hMemory - Memory Id. +#pLinearAddress - pointer to virtual address. +#status - Status of the unmap command. +#flags - Flags to use. + +===Alloc Context DMA 2=== +Allocates a context for DMA. + +The data for this call requires the following components: + +#hObjectParent - Object parent. +#hSubDevice - Sub device to allocate on. +#hObjectNew - Context id. +#hClass - Type of class. +#flags - Flags to use. +#selector - UNKNOWN. +#hMemory - Handle for Memory resource to DMA map. +#offset - Offset for the DMA mapping. +#limit - Limit of the DMA map. +#status - Status of the allocation. + +NOTE: Seems to be deprecated. + +===Map Memory DMA=== +Map a region of memory for DMA access. + +The data for this call requires the following components: + +#hClient - Client Id. +#hDevice - Device Id. +#hDma - DMA Id. +#hMemory - Memory Id. +#offset - Offset of the region. +#limit - Limit of the region. +#flags - flags to use. +#dmaOffset - Offset of the mapping. +#status - Status of the map Memory DMA. + +===Un-map Memory DMA=== +Unmaps a region of memory for DMA access. + +The data for this call requires the following components: + +#hClient - Client Id. +#hDevice - Device Id. +#hDma - DMA handle. +#hMemory - Memory handle. +#flags - Flags to use. +#dmaOffset - DMA Offset to unmap. +#status - Status of the unmap Memory DMA. + +===Bind Context DMA=== +Binds a context for DMA interaction to a channel. + +The data for this call requires the following components: + +#hClient - Client Id. +#hChannel - Channel Id. +#hCtxDma - Context for DMA Id. +#status - Status of the bind context DMA. + +NOTE: Seems to be deprecated. + +===Share=== +Sharing of a resource between multiple clients. + +TODO: Understand this sharing more. + +The data for this call requires the following components: + +#hClient - Client Id. +#hObject - Resource Id. +#sharePolicy - Share policy. +#status - Status of sharing. + +===Add VBlank Callback=== +TODO: Figure out what this does. + +NOTE: Seems to be deprecated. + +==Engines== +There are engines which internally act as classes inside the OpenRM driver. + +These classes have a few key components that make them unique. + +===Table of Engines=== +{| class="wikitable sortable mw-collapsible" +|+Engines +!Engine +!Description +|- +|Invalid +|Does not exist. +|- +|Software +|Abstraction layer for software processes inside the OS Software. +|- +|GPU +|Interaction layer with the GPU. +|- +|Falcon +|Interaction with the Falcon on the GPU. +|- +|Master Control +|Unknown. +|- +|Kernel Master Control +|Interaction with the PMC.[https://github.com/NVIDIA/open-gpu-kernel-modules/blob/d8f3bcff924776518f1e63286537c3cf365289ac/src/nvidia/generated/g_kernel_mc_nvoc.h] +|- +|Private Ring +|Interaction with a private messaging ring. +|- +|Software Interrupt +|Interaction with software interrupts. +|- +|Memory System +|Interaction with the memory system. +|- +|Kernel Memory System +|Interaction with the kernel memory system. +|- +|Memory Manager +|Interaction with the memory management system. +|- +|FBFlcn +|Interaction with the FBFlcn subsystem. +|- +|TMR +|Interaction with the TMR on specific chips. +|- +|DMA +|Interaction with a GPU's DMA access. +|- +|Kernel FIFO +|First in First out queue in the GPU driver. +|- +|FIFO +|Interaction with a generic FIFO. +|- +|OS +|Interaction with the OS. +|- +|BUS +|PCI Bus interaction +|- +|Kernel BUS +|Internal module BUS. +|- +|INFOROM +|Interaction with the INFOROM Region on the GPU. +|- +|PERF +|Unknown. +|- +|Kernel PERF +|Unknown. +|- +|BIF +|Unknown. +|- +|Kernel BIF +|Unknown. +|- +|SF +|Unknown. +|- +|GPIO +|Interaction with GPIO. +|- +|CLK +|Clock manager system. +|- +|Kernel Display +|Kernel Display system. +|- +|DISP +|Display system. +|- +|DPU +|Data Processing Unit. +|- +| +| +|- +| +| +|} +</textarea><div class="templatesUsed"></div><p id="mw-returnto">Return to <a href="index.php/OpenRM.html" title="OpenRM">OpenRM</a>.</p> + +<div class="printfooter">Retrieved from "<a dir="ltr" href="index.php/OpenRM.html">https://open-iov.org/index.php/OpenRM</a>"</div></div> + <div id="catlinks" class="catlinks catlinks-allhidden" data-mw="interface"></div> + </div> +</div> + +<div id="mw-navigation"> + <h2>Navigation menu</h2> + <div id="mw-head"> + <nav id="p-personal" class="mw-portlet mw-portlet-personal vector-user-menu-legacy vector-menu" aria-labelledby="p-personal-label" role="navigation" + > + <h3 id="p-personal-label" class="vector-menu-heading"> <span>Personal tools</span> + </h3> + <div class="vector-menu-content"> + + <ul 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