[FFmpeg-devel] [PATCH] Add functions to identify devices in more ways

[rcombs <rcombs@rcombs.me>]

- cuDeviceGetUuid_v2, giving distinct IDs for different MIG instances
- cuDeviceGetLuid, giving a Win32 LUID to match with DXGI and other APIs
- cuDeviceGetByPCIBusId, retrieving a device that matches a PCI bus ID string
- cuDeviceGetPCIBusId, giving a PCI bus ID string for a device
---
 include/ffnvcodec/dynlink_cuda.h   | 4 ++++
 include/ffnvcodec/dynlink_loader.h | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/ffnvcodec/dynlink_cuda.h b/include/ffnvcodec/dynlink_cuda.h
index baafa49..d52d793 100644
--- a/include/ffnvcodec/dynlink_cuda.h
+++ b/include/ffnvcodec/dynlink_cuda.h
@@ -355,6 +355,10 @@ typedef CUresult CUDAAPI tcuDeviceGet(CUdevice *device, int ordinal);
 typedef CUresult CUDAAPI tcuDeviceGetAttribute(int *pi, CUdevice_attribute attrib, CUdevice dev);
 typedef CUresult CUDAAPI tcuDeviceGetName(char *name, int len, CUdevice dev);
 typedef CUresult CUDAAPI tcuDeviceGetUuid(CUuuid *uuid, CUdevice dev);
+typedef CUresult CUDAAPI tcuDeviceGetUuid_v2(CUuuid *uuid, CUdevice dev);
+typedef CUresult CUDAAPI tcuDeviceGetLuid(char* luid, unsigned int* deviceNodeMask, CUdevice dev);
+typedef CUresult CUDAAPI tcuDeviceGetByPCIBusId(CUdevice* dev, const char* pciBusId);
+typedef CUresult CUDAAPI tcuDeviceGetPCIBusId(char* pciBusId, int len, CUdevice dev);
 typedef CUresult CUDAAPI tcuDeviceComputeCapability(int *major, int *minor, CUdevice dev);
 typedef CUresult CUDAAPI tcuCtxCreate_v2(CUcontext *pctx, unsigned int flags, CUdevice dev);
 typedef CUresult CUDAAPI tcuCtxSetLimit(CUlimit limit, size_t value);
diff --git a/include/ffnvcodec/dynlink_loader.h b/include/ffnvcodec/dynlink_loader.h
index 85aebf4..14d17e3 100644
--- a/include/ffnvcodec/dynlink_loader.h
+++ b/include/ffnvcodec/dynlink_loader.h
@@ -142,6 +142,10 @@ typedef struct CudaFunctions {
     tcuDeviceGetAttribute *cuDeviceGetAttribute;
     tcuDeviceGetName *cuDeviceGetName;
     tcuDeviceGetUuid *cuDeviceGetUuid;
+    tcuDeviceGetUuid_v2 *cuDeviceGetUuid_v2;
+    tcuDeviceGetLuid *cuDeviceGetLuid;
+    tcuDeviceGetByPCIBusId *cuDeviceGetByPCIBusId;
+    tcuDeviceGetPCIBusId *cuDeviceGetPCIBusId;
     tcuDeviceComputeCapability *cuDeviceComputeCapability;
     tcuCtxCreate_v2 *cuCtxCreate;
     tcuCtxSetLimit *cuCtxSetLimit;
@@ -337,6 +341,10 @@ static inline int cuda_load_functions(CudaFunctions **functions, void *logctx)
     LOAD_SYMBOL(cuGraphicsSubResourceGetMappedArray, tcuGraphicsSubResourceGetMappedArray, "cuGraphicsSubResourceGetMappedArray");
 
     LOAD_SYMBOL_OPT(cuDeviceGetUuid, tcuDeviceGetUuid, "cuDeviceGetUuid");
+    LOAD_SYMBOL_OPT(cuDeviceGetUuid_v2, tcuDeviceGetUuid_v2, "cuDeviceGetUuid_v2");
+    LOAD_SYMBOL_OPT(cuDeviceGetLuid, tcuDeviceGetLuid, "cuDeviceGetLuid");
+    LOAD_SYMBOL_OPT(cuDeviceGetByPCIBusId, tcuDeviceGetByPCIBusId, "cuDeviceGetByPCIBusId");
+    LOAD_SYMBOL_OPT(cuDeviceGetPCIBusId, tcuDeviceGetPCIBusId, "cuDeviceGetPCIBusId");
     LOAD_SYMBOL_OPT(cuImportExternalMemory, tcuImportExternalMemory, "cuImportExternalMemory");
     LOAD_SYMBOL_OPT(cuDestroyExternalMemory, tcuDestroyExternalMemory, "cuDestroyExternalMemory");
     LOAD_SYMBOL_OPT(cuExternalMemoryGetMappedBuffer, tcuExternalMemoryGetMappedBuffer, "cuExternalMemoryGetMappedBuffer");
-- 
2.39.1

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