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feat(nvapi): implement NvAPI_EnumPhysicalGPUs, NvAPI_EnumLogicalGPUs, NvAPI_GetPhysicalGPUsFromDisplay #120

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feat(nvapi): implement NvAPI_EnumPhysicalGPUs, NvAPI_EnumLogicalGPUs, NvAPI_GetPhysicalGPUsFromDisplay #120

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57 changes: 40 additions & 17 deletions src/nvapi/nvapi.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -265,35 +265,59 @@ NVAPI_INTERFACE
NvAPI_EnumPhysicalGPUs(NvPhysicalGpuHandle nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS], NvU32 *pGpuCount) {
if (!nvGPUHandle || !pGpuCount)
return NVAPI_INVALID_ARGUMENT;
/*
* reasonable to report one fake gpu handle
*/
*pGpuCount = 1;
nvGPUHandle[0] = (NvPhysicalGpuHandle)0xdeadbeef;

auto devices = WMT::CopyAllDevices();
auto adapter_count = devices.count();
if (adapter_count == 0)
return NVAPI_NVIDIA_DEVICE_NOT_FOUND;

*pGpuCount = adapter_count;
for (unsigned i = 0; i < adapter_count; i++) {
nvGPUHandle[i] = (NvPhysicalGpuHandle)devices.object(i).registryID();
}

return NVAPI_OK;
}

NVAPI_INTERFACE
NvAPI_EnumLogicalGPUs(NvLogicalGpuHandle nvGPUHandle[NVAPI_MAX_LOGICAL_GPUS], NvU32 *pGpuCount) {
if (!nvGPUHandle || !pGpuCount)
return NVAPI_INVALID_ARGUMENT;
/*
* reasonable to report one fake gpu handle
*/
*pGpuCount = 1;
nvGPUHandle[0] = (NvLogicalGpuHandle)0xdeadbeef;

auto devices = WMT::CopyAllDevices();
auto adapter_count = devices.count();
if (adapter_count == 0)
return NVAPI_NVIDIA_DEVICE_NOT_FOUND;

*pGpuCount = adapter_count;
for (unsigned i = 0; i < adapter_count; i++) {
nvGPUHandle[i] = (NvLogicalGpuHandle)devices.object(i).registryID();
}

return NVAPI_OK;
}

NVAPI_INTERFACE
NvAPI_GetPhysicalGPUsFromDisplay(NvDisplayHandle hNvDisp, NvPhysicalGpuHandle nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS], NvU32 *pGpuCount) {
if (!nvGPUHandle || !pGpuCount)
if (!hNvDisp || !nvGPUHandle || !pGpuCount)
return NVAPI_INVALID_ARGUMENT;
/*
* reasonable to report one fake gpu handle
*/
*pGpuCount = 1;
nvGPUHandle[0] = (NvPhysicalGpuHandle)0xdeadbeef;

HMONITOR monitor = (HMONITOR)hNvDisp;
if (!monitor)
return NVAPI_NVIDIA_DEVICE_NOT_FOUND;

auto devices = WMT::CopyAllDevices();
auto adapter_count = devices.count();
if (adapter_count == 0)
return NVAPI_NVIDIA_DEVICE_NOT_FOUND;

unsigned count_devices = 0;
for (unsigned i = 0; i < adapter_count; i++) {
// TODO: Currently assuming all GPU instances are connected to specific monitor
nvGPUHandle[count_devices++] = (NvPhysicalGpuHandle)devices.object(i).registryID();
}
*pGpuCount = count_devices;

return NVAPI_OK;
}

Expand Down Expand Up @@ -427,7 +451,6 @@ NvAPI_Disp_HdrColorControl(NvU32 displayId, NV_HDR_COLOR_DATA *pHdrColorData) {

NVAPI_INTERFACE
NvAPI_EnumNvidiaDisplayHandle(NvU32 thisEnum, NvDisplayHandle *pNvDispHandle) {

if (!pNvDispHandle)
return NVAPI_INVALID_ARGUMENT;

Expand Down