thodg/cgminer/ocl.c

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• Hash : dde70397
  Author :
  Date : 2011-06-14T10:32:54
  

  Merge gpumining from oclmine. Unstable.

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• ocl.c

• #include <signal.h>
  #include <stdlib.h>
  #include <string.h>
  #include <stdio.h>
  #include <sys/types.h>
  #include <sys/socket.h>
  #include <netinet/in.h>
  #include <netdb.h> 
  #include <time.h>
  #include <sys/time.h>
  #include <pthread.h>
  
  #include "findnonce.h"
  #include "ocl.h"
  
  char *file_contents(const char *filename, int *length)
  {
  	FILE *f = fopen(filename, "r");
  	void *buffer;
  
  	if (!f) {
  		fprintf(stderr, "Unable to open %s for reading\n", filename);
  		return NULL;
  	}
  
  	fseek(f, 0, SEEK_END);
  	*length = ftell(f);
  	fseek(f, 0, SEEK_SET);
  
  	buffer = malloc(*length+1);
  	*length = fread(buffer, 1, *length, f);
  	fclose(f);
  	((char*)buffer)[*length] = '\0';
  
  	return (char*)buffer;
  }
  
  int clDevicesNum() {
  	cl_int status = 0;
  
  	cl_uint numPlatforms;
  	cl_platform_id platform = NULL;
  	status = clGetPlatformIDs(0, NULL, &numPlatforms);
  	if(status != CL_SUCCESS)
  	{   
  		printf("Error: Getting Platforms. (clGetPlatformsIDs)\n");
  		return -1;
  	}   
  
  	if(numPlatforms > 0)
  	{   
  		cl_platform_id* platforms = (cl_platform_id *)malloc(numPlatforms*sizeof(cl_platform_id));
  		status = clGetPlatformIDs(numPlatforms, platforms, NULL);
  		if(status != CL_SUCCESS)
  		{   
  			printf("Error: Getting Platform Ids. (clGetPlatformsIDs)\n");
  			return -1;
  		}   
  
  		unsigned int i;
  		for(i=0; i < numPlatforms; ++i)
  		{   
  			char pbuff[100];
  			status = clGetPlatformInfo( platforms[i], CL_PLATFORM_VENDOR, sizeof(pbuff), pbuff, NULL);
  			if(status != CL_SUCCESS)
  			{   
  				printf("Error: Getting Platform Info. (clGetPlatformInfo)\n");
  				free(platforms);
  				return -1;
  			}   
  			platform = platforms[i];
  			if(!strcmp(pbuff, "Advanced Micro Devices, Inc."))
  			{   
  				break;
  			}  
  		}   
  		free(platforms);
  	}   
  
  	if(platform == NULL) {
  		perror("NULL platform found!\n");
  		return -1;
  	}
  
  	cl_uint numDevices;
  	status = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 0, NULL, &numDevices);
  	if(status != CL_SUCCESS)
  	{
  		printf("Error: Getting Device IDs (num)\n");
  		return -1;
  	}
  
  	return numDevices;
  }
  
  _clState *initCl(int gpu, char *name, size_t nameSize) {
  	cl_int status = 0;
  
  	_clState *clState = malloc(sizeof(_clState));;
  
  	cl_uint numPlatforms;
  	cl_platform_id platform = NULL;
  	status = clGetPlatformIDs(0, NULL, &numPlatforms);
  	if(status != CL_SUCCESS)
  	{   
  		printf("Error: Getting Platforms. (clGetPlatformsIDs)\n");
  		return NULL;
  	}   
  
  	if(numPlatforms > 0)
  	{   
  		cl_platform_id* platforms = (cl_platform_id *)malloc(numPlatforms*sizeof(cl_platform_id));
  		status = clGetPlatformIDs(numPlatforms, platforms, NULL);
  		if(status != CL_SUCCESS)
  		{   
  			printf("Error: Getting Platform Ids. (clGetPlatformsIDs)\n");
  			return NULL;
  		}   
  
  		unsigned int i;
  		for(i=0; i < numPlatforms; ++i)
  		{   
  			char pbuff[100];
  			status = clGetPlatformInfo( platforms[i], CL_PLATFORM_VENDOR, sizeof(pbuff), pbuff, NULL);
  			if(status != CL_SUCCESS)
  			{   
  				printf("Error: Getting Platform Info. (clGetPlatformInfo)\n");
  				free(platforms);
  				return NULL;
  			}   
  			platform = platforms[i];
  			if(!strcmp(pbuff, "Advanced Micro Devices, Inc."))
  			{   
  				break;
  			}  
  		}   
  		free(platforms);
  	}   
  
  	if(platform == NULL) {
  		perror("NULL platform found!\n");
  		return NULL;
  	}
  
  	cl_uint numDevices;
  	status = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 0, NULL, &numDevices);
  	if(status != CL_SUCCESS)
  	{
  		printf("Error: Getting Device IDs (num)\n");
  		return NULL;
  	}
  
  	cl_device_id *devices;
  	if(numDevices > 0 ) {
  		devices = (cl_device_id *)malloc(numDevices*sizeof(cl_device_id));
  
  		/* Now, get the device list data */
  
  		status = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, numDevices, devices, NULL);
  		if(status != CL_SUCCESS)
  		{
  			printf("Error: Getting Device IDs (list)\n");
  			return NULL;
  		}
  
  		printf("List of devices:\n");
  
  		int i;
  		for(i=0; i<numDevices; i++) {
  			char pbuff[100];
  			status = clGetDeviceInfo(devices[i], CL_DEVICE_NAME, sizeof(pbuff), pbuff, NULL);
  			if(status != CL_SUCCESS)
  			{
  				printf("Error: Getting Device Info\n");
  				return NULL;
  			}
  
  			printf("\t%i\t%s\n", i, pbuff);
  		}
  
  		if (gpu >= 0 && gpu < numDevices) {
  			char pbuff[100];
  			status = clGetDeviceInfo(devices[gpu], CL_DEVICE_NAME, sizeof(pbuff), pbuff, NULL);
  			if(status != CL_SUCCESS)
  			{
  				printf("Error: Getting Device Info\n");
  				return NULL;
  			}
  
  			printf("Selected %i: %s\n", gpu, pbuff);
  			strncpy(name, pbuff, nameSize);
  		} else {
  			printf("Invalid GPU %i\n", gpu);
  			return NULL;
  		}
  
  	} else return NULL;
  
  	cl_context_properties cps[3] = { CL_CONTEXT_PLATFORM, (cl_context_properties)platform, 0 };
  
  	clState->context = clCreateContextFromType(cps, CL_DEVICE_TYPE_GPU, NULL, NULL, &status);
  	if(status != CL_SUCCESS) 
  	{   
  		printf("Error: Creating Context. (clCreateContextFromType)\n");
  		return NULL; 
  	}
  
  
  	/////////////////////////////////////////////////////////////////
  	// Load CL file, build CL program object, create CL kernel object
  	/////////////////////////////////////////////////////////////////
  	//
  	const char * filename  = "oclminer.cl";
  	int pl;
  	char *source = file_contents(filename, &pl);
  	size_t sourceSize[] = {(size_t)pl};
  
  	clState->program = clCreateProgramWithSource(clState->context, 1, (const char **)&source, sourceSize, &status);
  	if(status != CL_SUCCESS) 
  	{   
  		printf("Error: Loading Binary into cl_program (clCreateProgramWithBinary)\n");
  		return NULL;
  	}
  
  	/* create a cl program executable for all the devices specified */
  	status = clBuildProgram(clState->program, 1, &devices[gpu], NULL, NULL, NULL);
  	if(status != CL_SUCCESS) 
  	{   
  		printf("Error: Building Program (clBuildProgram)\n");
  		size_t logSize;
  		status = clGetProgramBuildInfo(clState->program, devices[gpu], CL_PROGRAM_BUILD_LOG, 0, NULL, &logSize);
  
  		char *log = malloc(logSize);
  		status = clGetProgramBuildInfo(clState->program, devices[gpu], CL_PROGRAM_BUILD_LOG, logSize, log, NULL);
  		printf("%s\n", log);
  		return NULL; 
  	}
  
  	/* get a kernel object handle for a kernel with the given name */
  	clState->kernel = clCreateKernel(clState->program, "oclminer", &status);
  	if(status != CL_SUCCESS)
  	{
  		printf("Error: Creating Kernel from program. (clCreateKernel)\n");
  		return NULL;
  	}
  
  	/////////////////////////////////////////////////////////////////
  	// Create an OpenCL command queue
  	/////////////////////////////////////////////////////////////////
  	clState->commandQueue = clCreateCommandQueue( clState->context, devices[gpu], 0, &status);
  	if(status != CL_SUCCESS)
  	{
  		printf("Creating Command Queue. (clCreateCommandQueue)\n");
  		return NULL;
  	}
  
      clState->inputBuffer = clCreateBuffer(clState->context, CL_MEM_READ_WRITE, sizeof(dev_blk_ctx), NULL, &status);
      if(status != CL_SUCCESS) {
          printf("Error: clCreateBuffer (inputBuffer)\n");
          return NULL;
      }   
  
  	clState->outputBuffer = clCreateBuffer(clState->context, CL_MEM_READ_WRITE, sizeof(uint32_t) * MAXTHREADS, NULL, &status);
  	if(status != CL_SUCCESS) {
  		printf("Error: clCreateBuffer (outputBuffer)\n");
  		return NULL;
  	}
  
  	return clState;
  }
  
  

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