win32: implement a nvapi.dll wrapper like nvml

Allow to get/set missing infos like the power limit on x86

squashed for a better min/max and device mapping

Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>

Algo256/bmw.cu

@@ -6,9 +6,8 @@ extern "C" {
 #include "sph/sph_bmw.h"
 }
 
-#include "miner.h"
-
-#include "cuda_helper.h"
+#include <miner.h>
+#include <cuda_helper.h>
 
 static uint32_t *d_hash[MAX_GPUS];
 

ccminer.cpp

@@ -295,12 +295,15 @@ Options:\n\
       --max-rate=N[KMG] Only mine if net hashrate is less than specified value\n\
       --max-diff=N      Only mine if net difficulty is less than specified value\n\
                         Can be tuned with --resume-diff=N to set a resume value\n"
-#if defined(USE_WRAPNVML) && (defined(__linux) || defined(_WIN64)) /* via nvml */
+#if defined(__linux) || defined(_WIN64) /* via nvml */
 "\
       --mem-clock=3505  Set the gpu memory max clock (346.72+ driver)\n\
       --gpu-clock=1150  Set the gpu engine max clock (346.72+ driver)\n\
       --pstate=0[,2]    Set the gpu power state (352.21+ driver)\n\
       --plimit=100W     Set the gpu power limit (352.21+ driver)\n"
+#else /* via nvapi.dll */
+"\
+      --plimit=100      Set the gpu power limit in percentage\n"
 #endif
 #ifdef HAVE_SYSLOG_H
 "\

ccminer.vcxproj

@@ -230,6 +230,7 @@
       <TreatWChar_tAsBuiltInType>false</TreatWChar_tAsBuiltInType>
       <Optimization Condition="'$(Configuration)'=='Release'">Full</Optimization>
     </ClCompile>
+    <ClCompile Include="nvapi.cpp" />
     <ClCompile Include="pools.cpp" />
     <ClCompile Include="util.cpp" />
     <ClCompile Include="bench.cpp" />
@@ -539,4 +540,4 @@
   <Target Name="AfterClean">
     <Delete Files="@(FilesToCopy->'$(OutDir)%(Filename)%(Extension)')" TreatErrorsAsWarnings="true" />
   </Target>
-</Project>
+</Project>

ccminer.vcxproj.filters

@@ -264,6 +264,9 @@
     <ClCompile Include="sph\blake2s.c">
       <Filter>Source Files\sph</Filter>
     </ClCompile>
+    <ClCompile Include="nvapi.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="algos.h">
@@ -734,4 +737,4 @@
       <Filter>Ressources</Filter>
     </Text>
   </ItemGroup>
-</Project>
+</Project>

compat/nvapi/nvapi_ccminer.h

@@ -1,2 +1,44 @@
-/* todo: stripped version... or not */
-#include "nvapi.h"
+#pragma once
+
+#include "nvapi.h"
+
+NvAPI_Status nvapi_dll_init();
+
+typedef struct {
+	NvU32 version;
+	NvU32 flags;
+	struct
+	{
+		NvU32 pstate; // Assumption
+		NvU32 unknown1[2];
+		NvU32 min_power;
+		NvU32 unknown2[2];
+		NvU32 def_power;
+		NvU32 unknown3[2];
+		NvU32 max_power;
+		NvU32 unknown4; // 0
+	} entries[4];
+} NVAPI_GPU_POWER_INFO;
+
+typedef struct {
+	NvU32 version;
+	NvU32 flags;
+	struct {
+		NvU32 unknown1;
+		NvU32 unknown2;
+		NvU32 power; // percent * 1000
+		NvU32 unknown4;
+	} entries[4];
+} NVAPI_GPU_POWER_STATUS;
+
+#define NVAPI_GPU_POWER_STATUS_VER MAKE_NVAPI_VERSION(NVAPI_GPU_POWER_STATUS, 1)
+#define NVAPI_GPU_POWER_INFO_VER MAKE_NVAPI_VERSION(NVAPI_GPU_POWER_INFO, 1)
+
+NvAPI_Status NvAPI_DLL_GetInterfaceVersionString(NvAPI_ShortString string);
+NvAPI_Status NvAPI_DLL_ClientPowerPoliciesGetInfo(NvPhysicalGpuHandle hPhysicalGpu, NVAPI_GPU_POWER_INFO* pInfo);
+NvAPI_Status NvAPI_DLL_ClientPowerPoliciesGetStatus(NvPhysicalGpuHandle hPhysicalGpu, NVAPI_GPU_POWER_STATUS* pPolicies);
+NvAPI_Status NvAPI_DLL_ClientPowerPoliciesSetStatus(NvPhysicalGpuHandle hPhysicalGpu, NVAPI_GPU_POWER_STATUS* pPolicies);
+
+NvAPI_Status NvAPI_DLL_Unload();
+
+#define NV_ASSERT(x) { NvAPI_Status ret = x; if(ret != NVAPI_OK) return ret; }

nvapi.cpp

@@ -0,0 +1,128 @@
+/**
+ * Wrapper to nvapi.dll to query informations missing for x86 binaries (there is no nvml x86)
+ * based on the work of https://github.com/ircubic/lib_gpu
+ *
+ * tpruvot@ccminer.org 06-2016
+ */
+
+#ifdef _WIN32
+
+#include <windows.h>
+#include <memory>
+#include <stdexcept>
+
+#include "compat/nvapi/nvapi_ccminer.h"
+
+class NvAPILibraryHandle
+{
+	typedef void *(*QueryPtr)(uint32_t);
+
+private:
+	HMODULE library;
+	QueryPtr nvidia_query;
+
+public:
+	NvAPILibraryHandle()
+	{
+		bool success = false;
+		library = LoadLibrary("nvapi.dll");
+		if (library != NULL) {
+			nvidia_query = reinterpret_cast<QueryPtr>(GetProcAddress(library, "nvapi_QueryInterface"));
+			if (nvidia_query != NULL) {
+				const uint32_t NVAPI_ID_INIT = 0x0150E828;
+				auto init = static_cast<NvAPI_Status(*)()>(nvidia_query(NVAPI_ID_INIT));
+				NvAPI_Status ret = init();
+				success = (ret == NVAPI_OK);
+			}
+		}
+
+		if (!success) {
+			throw std::runtime_error("Unable to locate NVAPI library!");
+		}
+	}
+
+	~NvAPILibraryHandle()
+	{
+		NvAPI_DLL_Unload();
+		FreeLibrary(library);
+	}
+
+	void *query(uint32_t ID)
+	{
+		return nvidia_query(ID);
+	}
+
+};
+
+static std::unique_ptr<NvAPILibraryHandle> nvidia_handle;
+bool nvapi_dll_loaded = false;
+
+NvAPI_Status nvapi_dll_init()
+{
+	try {
+		if (!nvapi_dll_loaded) {
+			nvidia_handle = std::make_unique<NvAPILibraryHandle>();
+			nvapi_dll_loaded = true;
+		}
+	}
+	catch (std::runtime_error) {
+		nvapi_dll_loaded = false;
+		return NVAPI_ERROR;
+	}
+
+	return NVAPI_OK;
+}
+
+// Hidden nvapi.dll functions
+
+#define NVAPI_ID_IFVERSION 0x01053FA5
+NvAPI_Status NvAPI_DLL_GetInterfaceVersionString(NvAPI_ShortString string) {
+	static NvAPI_Status (*pointer)(NvAPI_ShortString string) = NULL;
+	if(!nvapi_dll_loaded) return NVAPI_API_NOT_INITIALIZED;
+	if(!pointer) {
+		pointer = (NvAPI_Status (*)(NvAPI_ShortString))nvidia_handle->query(NVAPI_ID_IFVERSION);
+	}
+	return (*pointer)(string);
+}
+
+#define NVAPI_ID_POWER_INFO 0x34206D86
+NvAPI_Status NvAPI_DLL_ClientPowerPoliciesGetInfo(NvPhysicalGpuHandle handle, NVAPI_GPU_POWER_INFO* pInfo) {
+	static NvAPI_Status (*pointer)(NvPhysicalGpuHandle, NVAPI_GPU_POWER_INFO*) = NULL;
+	if(!nvapi_dll_loaded) return NVAPI_API_NOT_INITIALIZED;
+	if(!pointer) {
+		pointer = (NvAPI_Status (*)(NvPhysicalGpuHandle, NVAPI_GPU_POWER_INFO*))nvidia_handle->query(NVAPI_ID_POWER_INFO);
+	}
+	return (*pointer)(handle, pInfo);
+}
+
+#define NVAPI_ID_POWERPOL_GET 0x70916171
+NvAPI_Status NvAPI_DLL_ClientPowerPoliciesGetStatus(NvPhysicalGpuHandle handle, NVAPI_GPU_POWER_STATUS* pPolicies) {
+	static NvAPI_Status (*pointer)(NvPhysicalGpuHandle, NVAPI_GPU_POWER_STATUS*) = NULL;
+	if(!nvapi_dll_loaded) return NVAPI_API_NOT_INITIALIZED;
+	if(!pointer) {
+		pointer = (NvAPI_Status (*)(NvPhysicalGpuHandle, NVAPI_GPU_POWER_STATUS*))nvidia_handle->query(NVAPI_ID_POWERPOL_GET);
+	}
+	return (*pointer)(handle, pPolicies);
+}
+
+#define NVAPI_ID_POWERPOL_SET 0x0AD95F5ED
+NvAPI_Status NvAPI_DLL_ClientPowerPoliciesSetStatus(NvPhysicalGpuHandle handle, NVAPI_GPU_POWER_STATUS* pPolicies) {
+	static NvAPI_Status (*pointer)(NvPhysicalGpuHandle, NVAPI_GPU_POWER_STATUS*) = NULL;
+	if(!nvapi_dll_loaded) return NVAPI_API_NOT_INITIALIZED;
+	if(!pointer) {
+		pointer = (NvAPI_Status (*)(NvPhysicalGpuHandle, NVAPI_GPU_POWER_STATUS*))nvidia_handle->query(NVAPI_ID_POWERPOL_SET);
+	}
+	return (*pointer)(handle, pPolicies);
+}
+
+#define NVAPI_ID_UNLOAD 0xD22BDD7E
+NvAPI_Status NvAPI_DLL_Unload() {
+	static NvAPI_Status (*pointer)() = NULL;
+	if(!nvapi_dll_loaded) return NVAPI_API_NOT_INITIALIZED;
+	if(!pointer) {
+		pointer = (NvAPI_Status (*)())nvidia_handle->query(NVAPI_ID_UNLOAD);
+	}
+	return (*pointer)();
+}
+
+#endif

nvml.cpp

@@ -460,7 +460,7 @@ int nvml_set_pstate(nvml_handle *nvmlh, int dev_id)
 	nclocks = min(nclocks, 32);
 	if (nclocks)
 		nvmlh->nvmlDeviceGetSupportedMemoryClocks(nvmlh->devs[n], &nclocks, mem_clocks);
-	if (wanted_pstate+1 > nclocks) {
+	if ((uint32_t) wanted_pstate+1 > nclocks) {
 		applog(LOG_WARNING, "GPU #%d: only %u mem clocks available (p-states)", dev_id, nclocks);
 	}
 	for (uint8_t u=0; u < nclocks; u++) {
@@ -789,6 +789,8 @@ int nvml_destroy(nvml_handle *nvmlh)
 	return 0;
 }
 
+// ----------------------------------------------------------------------------
+
 /**
  * nvapi alternative for windows x86 binaries
  * nvml api doesn't exists as 32bit dll :///
@@ -800,6 +802,7 @@ static int nvapi_dev_map[MAX_GPUS] = { 0 };
 static NvDisplayHandle hDisplay_a[NVAPI_MAX_PHYSICAL_GPUS * 2] = { 0 };
 static NvPhysicalGpuHandle phys[NVAPI_MAX_PHYSICAL_GPUS] = { 0 };
 static NvU32 nvapi_dev_cnt = 0;
+extern bool nvapi_dll_loaded;
 
 int nvapi_temperature(unsigned int devNum, unsigned int *temperature)
 {
@@ -967,6 +970,52 @@ int nvapi_getbios(unsigned int devNum, char *desc, unsigned int maxlen)
 	return 0;
 }
 
+uint8_t nvapi_getplimit(unsigned int devNum)
+{
+	NvAPI_Status ret = NVAPI_OK;
+	NVAPI_GPU_POWER_STATUS pol = { 0 };
+	pol.version = NVAPI_GPU_POWER_STATUS_VER;
+	if ((ret = NvAPI_DLL_ClientPowerPoliciesGetStatus(phys[devNum], &pol)) != NVAPI_OK) {
+		NvAPI_ShortString string;
+		NvAPI_GetErrorMessage(ret, string);
+		if (opt_debug)
+			applog(LOG_DEBUG, "NVAPI GetPowerPoliciesStatus: %s", string);
+		return 0;
+	}
+	return (uint8_t) (pol.entries[0].power / 1000); // in percent
+}
+
+int nvapi_setplimit(unsigned int devNum, uint16_t percent)
+{
+	NvAPI_Status ret = NVAPI_OK;
+	uint32_t val = percent * 1000;
+
+	NVAPI_GPU_POWER_INFO nfo = { 0 };
+	nfo.version = NVAPI_GPU_POWER_INFO_VER;
+	ret = NvAPI_DLL_ClientPowerPoliciesGetInfo(phys[devNum], &nfo);
+	if (ret == NVAPI_OK) {
+		if (val == 0)
+			val = nfo.entries[0].def_power;
+		else if (val < nfo.entries[0].min_power)
+			val = nfo.entries[0].min_power;
+		else if (val > nfo.entries[0].max_power)
+			val = nfo.entries[0].max_power;
+	}
+
+	NVAPI_GPU_POWER_STATUS pol = { 0 };
+	pol.version = NVAPI_GPU_POWER_STATUS_VER;
+	pol.flags = 1;
+	pol.entries[0].power = val;
+	if ((ret = NvAPI_DLL_ClientPowerPoliciesSetStatus(phys[devNum], &pol)) != NVAPI_OK) {
+		NvAPI_ShortString string;
+		NvAPI_GetErrorMessage(ret, string);
+		if (opt_debug)
+			applog(LOG_DEBUG, "NVAPI SetPowerPoliciesStatus: %s", string);
+		return -1;
+	}
+	return ret;
+}
+
 int nvapi_init()
 {
 	int num_gpus = cuda_num_devices();
@@ -1017,11 +1066,12 @@ int nvapi_init()
 			applog(LOG_DEBUG, "NVAPI NvAPI_GPU_GetFullName: %s", string);
 		}
 	}
-
 #if 0
-	NvAPI_ShortString ver;
-	NvAPI_GetInterfaceVersionString(ver);
-	applog(LOG_DEBUG, "NVAPI Version: %s", ver);
+	if (opt_debug) {
+		NvAPI_ShortString ver;
+		NvAPI_GetInterfaceVersionString(ver);
+		applog(LOG_DEBUG, "%s", ver);
+	}
 #endif
 
 	NvU32 udv;
@@ -1031,6 +1081,19 @@ int nvapi_init()
 		sprintf(driver_version,"%d.%02d", udv / 100, udv % 100);
 	}
 
+	// nvapi.dll
+	ret = nvapi_dll_init();
+	if (ret == NVAPI_OK) {
+		for (int n=0; n < opt_n_threads; n++) {
+			int dev_id = device_map[n % MAX_GPUS];
+			if (device_plimit[dev_id]) {
+				nvapi_setplimit(nvapi_dev_map[dev_id], device_plimit[dev_id]); // 0=default
+				uint32_t res = nvapi_getplimit(nvapi_dev_map[dev_id]);
+				gpulog(LOG_INFO, n, "NVAPI power limit is set to %u%%", res);
+			}
+		}
+	}
+
 	return 0;
 }
 #endif