Edit
thodg/cgminer/ocl.c
Con Kolivas
- ocl.c
-
/* * Copyright 2011-2012 Con Kolivas * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 3 of the License, or (at your option) * any later version. See COPYING for more details. */ #include "config.h" #ifdef HAVE_OPENCL #include <signal.h> #include <stdlib.h> #include <string.h> #include <stdio.h> #include <sys/types.h> #ifdef WIN32 #include <winsock2.h> #else #include <sys/socket.h> #include <netinet/in.h> #include <netdb.h> #endif #include <time.h> #include <sys/time.h> #include <pthread.h> #include <sys/stat.h> #include <unistd.h> #include "findnonce.h" #include "ocl.h" int opt_platform_id = -1; char *file_contents(const char *filename, int *length) { char *fullpath = alloca(PATH_MAX); void *buffer; FILE *f; strcpy(fullpath, opt_kernel_path); strcat(fullpath, filename); /* Try in the optional kernel path or installed prefix first */ f = fopen(fullpath, "rb"); if (!f) { /* Then try from the path cgminer was called */ strcpy(fullpath, cgminer_path); strcat(fullpath, filename); f = fopen(fullpath, "rb"); } /* Finally try opening it directly */ if (!f) f = fopen(filename, "rb"); if (!f) { applog(LOG_ERR, "Unable to open %s or %s for reading", filename, fullpath); 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(void) { cl_int status; char pbuff[256]; cl_uint numDevices; cl_uint numPlatforms; cl_platform_id *platforms; cl_platform_id platform = NULL; unsigned int most_devices = 0, i, mdplatform = 0; status = clGetPlatformIDs(0, NULL, &numPlatforms); /* If this fails, assume no GPUs. */ if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: clGetPlatformsIDs failed (no OpenCL SDK installed?)", status); return -1; } if (numPlatforms == 0) { applog(LOG_ERR, "clGetPlatformsIDs returned no platforms (no OpenCL SDK installed?)"); return -1; } platforms = (cl_platform_id *)alloca(numPlatforms*sizeof(cl_platform_id)); status = clGetPlatformIDs(numPlatforms, platforms, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Platform Ids. (clGetPlatformsIDs)", status); return -1; } for (i = 0; i < numPlatforms; i++) { status = clGetPlatformInfo( platforms[i], CL_PLATFORM_VENDOR, sizeof(pbuff), pbuff, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Platform Info. (clGetPlatformInfo)", status); return -1; } platform = platforms[i]; applog(LOG_INFO, "CL Platform %d vendor: %s", i, pbuff); status = clGetPlatformInfo(platform, CL_PLATFORM_NAME, sizeof(pbuff), pbuff, NULL); if (status == CL_SUCCESS) applog(LOG_INFO, "CL Platform %d name: %s", i, pbuff); status = clGetPlatformInfo(platform, CL_PLATFORM_VERSION, sizeof(pbuff), pbuff, NULL); if (status == CL_SUCCESS) applog(LOG_INFO, "CL Platform %d version: %s", i, pbuff); status = clGetDeviceIDs(platform, CL_DEVICE_TYPE_ALL, 0, NULL, &numDevices); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Device IDs (num)", status); if (i < numPlatforms - 1) continue; return -1; } applog(LOG_INFO, "Platform %d devices: %d", i, numDevices); if (numDevices > most_devices) { most_devices = numDevices; mdplatform = i; } if (numDevices) { unsigned int j; char pbuff[256]; cl_device_id *devices = (cl_device_id *)malloc(numDevices*sizeof(cl_device_id)); clGetDeviceIDs(platform, CL_DEVICE_TYPE_ALL, numDevices, devices, NULL); for (j = 0; j < numDevices; j++) { clGetDeviceInfo(devices[j], CL_DEVICE_NAME, sizeof(pbuff), pbuff, NULL); applog(LOG_INFO, "\t%i\t%s", j, pbuff); } free(devices); } } if (opt_platform_id < 0) opt_platform_id = mdplatform;; return most_devices; } static int advance(char **area, unsigned *remaining, const char *marker) { char *find = memmem(*area, *remaining, marker, strlen(marker)); if (!find) { applog(LOG_DEBUG, "Marker \"%s\" not found", marker); return 0; } *remaining -= find - *area; *area = find; return 1; } #define OP3_INST_BFE_UINT 4ULL #define OP3_INST_BFE_INT 5ULL #define OP3_INST_BFI_INT 6ULL #define OP3_INST_BIT_ALIGN_INT 12ULL #define OP3_INST_BYTE_ALIGN_INT 13ULL void patch_opcodes(char *w, unsigned remaining) { uint64_t *opcode = (uint64_t *)w; int patched = 0; int count_bfe_int = 0; int count_bfe_uint = 0; int count_byte_align = 0; while (42) { int clamp = (*opcode >> (32 + 31)) & 0x1; int dest_rel = (*opcode >> (32 + 28)) & 0x1; int alu_inst = (*opcode >> (32 + 13)) & 0x1f; int s2_neg = (*opcode >> (32 + 12)) & 0x1; int s2_rel = (*opcode >> (32 + 9)) & 0x1; int pred_sel = (*opcode >> 29) & 0x3; if (!clamp && !dest_rel && !s2_neg && !s2_rel && !pred_sel) { if (alu_inst == OP3_INST_BFE_INT) { count_bfe_int++; } else if (alu_inst == OP3_INST_BFE_UINT) { count_bfe_uint++; } else if (alu_inst == OP3_INST_BYTE_ALIGN_INT) { count_byte_align++; // patch this instruction to BFI_INT *opcode &= 0xfffc1fffffffffffULL; *opcode |= OP3_INST_BFI_INT << (32 + 13); patched++; } } if (remaining <= 8) break; opcode++; remaining -= 8; } applog(LOG_DEBUG, "Potential OP3 instructions identified: " "%i BFE_INT, %i BFE_UINT, %i BYTE_ALIGN", count_bfe_int, count_bfe_uint, count_byte_align); applog(LOG_DEBUG, "Patched a total of %i BFI_INT instructions", patched); } _clState *initCl(unsigned int gpu, char *name, size_t nameSize) { _clState *clState = calloc(1, sizeof(_clState)); bool patchbfi = false, prog_built = false; cl_platform_id platform = NULL; char pbuff[256], vbuff[255]; cl_platform_id* platforms; cl_uint preferred_vwidth; cl_device_id *devices; cl_uint numPlatforms; cl_uint numDevices; cl_int status; status = clGetPlatformIDs(0, NULL, &numPlatforms); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Platforms. (clGetPlatformsIDs)", status); return NULL; } platforms = (cl_platform_id *)alloca(numPlatforms*sizeof(cl_platform_id)); status = clGetPlatformIDs(numPlatforms, platforms, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Platform Ids. (clGetPlatformsIDs)", status); return NULL; } if (opt_platform_id >= (int)numPlatforms) { applog(LOG_ERR, "Specified platform that does not exist"); return NULL; } status = clGetPlatformInfo(platforms[opt_platform_id], CL_PLATFORM_VENDOR, sizeof(pbuff), pbuff, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Platform Info. (clGetPlatformInfo)", status); return NULL; } platform = platforms[opt_platform_id]; if (platform == NULL) { perror("NULL platform found!\n"); return NULL; } applog(LOG_INFO, "CL Platform vendor: %s", pbuff); status = clGetPlatformInfo(platform, CL_PLATFORM_NAME, sizeof(pbuff), pbuff, NULL); if (status == CL_SUCCESS) applog(LOG_INFO, "CL Platform name: %s", pbuff); status = clGetPlatformInfo(platform, CL_PLATFORM_VERSION, sizeof(vbuff), vbuff, NULL); if (status == CL_SUCCESS) applog(LOG_INFO, "CL Platform version: %s", vbuff); status = clGetDeviceIDs(platform, CL_DEVICE_TYPE_ALL, 0, NULL, &numDevices); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Device IDs (num)", status); return NULL; } 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_ALL, numDevices, devices, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Device IDs (list)", status); return NULL; } applog(LOG_INFO, "List of devices:"); unsigned int i; for (i = 0; i < numDevices; i++) { status = clGetDeviceInfo(devices[i], CL_DEVICE_NAME, sizeof(pbuff), pbuff, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Device Info", status); return NULL; } applog(LOG_INFO, "\t%i\t%s", i, pbuff); } if (gpu < numDevices) { status = clGetDeviceInfo(devices[gpu], CL_DEVICE_NAME, sizeof(pbuff), pbuff, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Getting Device Info", status); return NULL; } applog(LOG_INFO, "Selected %i: %s", gpu, pbuff); strncpy(name, pbuff, nameSize); } else { applog(LOG_ERR, "Invalid GPU %i", 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_ALL, NULL, NULL, &status); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Creating Context. (clCreateContextFromType)", status); return NULL; } ///////////////////////////////////////////////////////////////// // Create an OpenCL command queue ///////////////////////////////////////////////////////////////// clState->commandQueue = clCreateCommandQueue(clState->context, devices[gpu], CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE, &status); if (status != CL_SUCCESS) /* Try again without OOE enable */ clState->commandQueue = clCreateCommandQueue(clState->context, devices[gpu], 0 , &status); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Creating Command Queue. (clCreateCommandQueue)", status); return NULL; } /* Check for BFI INT support. Hopefully people don't mix devices with * and without it! */ char * extensions = malloc(1024); const char * camo = "cl_amd_media_ops"; char *find; status = clGetDeviceInfo(devices[gpu], CL_DEVICE_EXTENSIONS, 1024, (void *)extensions, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_EXTENSIONS", status); return NULL; } find = strstr(extensions, camo); if (find) clState->hasBitAlign = true; /* Check for OpenCL >= 1.0 support, needed for global offset parameter usage. */ char * devoclver = malloc(1024); const char * ocl10 = "OpenCL 1.0"; status = clGetDeviceInfo(devices[gpu], CL_DEVICE_VERSION, 1024, (void *)devoclver, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_VERSION", status); return NULL; } find = strstr(devoclver, ocl10); if (!find) clState->hasOpenCL11plus = true; status = clGetDeviceInfo(devices[gpu], CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT, sizeof(cl_uint), (void *)&preferred_vwidth, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT", status); return NULL; } applog(LOG_DEBUG, "Preferred vector width reported %d", preferred_vwidth); status = clGetDeviceInfo(devices[gpu], CL_DEVICE_MAX_WORK_GROUP_SIZE, sizeof(size_t), (void *)&clState->max_work_size, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_MAX_WORK_GROUP_SIZE", status); return NULL; } applog(LOG_DEBUG, "Max work group size reported %d", clState->max_work_size); /* Create binary filename based on parameters passed to opencl * compiler to ensure we only load a binary that matches what would * have otherwise created. The filename is: * name + kernelname +/- g(offset) + v + vectors + w + work_size + l + sizeof(long) + .bin */ char binaryfilename[255]; char filename[255]; char numbuf[10]; if (gpus[gpu].kernel == KL_NONE) { if (opt_scrypt) { applog(LOG_INFO, "Selecting scrypt kernel"); clState->chosen_kernel = KL_SCRYPT; } else if (!strstr(name, "Tahiti") && /* Detect all 2.6 SDKs not with Tahiti and use diablo kernel */ (strstr(vbuff, "844.4") || // Linux 64 bit ATI 2.6 SDK strstr(vbuff, "851.4") || // Windows 64 bit "" strstr(vbuff, "831.4") || strstr(vbuff, "898.1") || // 12.2 driver SDK strstr(vbuff, "923.1"))) { // 12.4 driver SDK applog(LOG_INFO, "Selecting diablo kernel"); clState->chosen_kernel = KL_DIABLO; /* Detect all 7970s, older ATI and NVIDIA and use poclbm */ } else if (strstr(name, "Tahiti") || !clState->hasBitAlign) { applog(LOG_INFO, "Selecting poclbm kernel"); clState->chosen_kernel = KL_POCLBM; /* Use phatk for the rest R5xxx R6xxx */ } else { applog(LOG_INFO, "Selecting phatk kernel"); clState->chosen_kernel = KL_PHATK; } gpus[gpu].kernel = clState->chosen_kernel; } else { clState->chosen_kernel = gpus[gpu].kernel; if (clState->chosen_kernel == KL_PHATK && (strstr(vbuff, "844.4") || strstr(vbuff, "851.4") || strstr(vbuff, "831.4") || strstr(vbuff, "898.1") || strstr(vbuff, "923.1"))) { applog(LOG_WARNING, "WARNING: You have selected the phatk kernel."); applog(LOG_WARNING, "You are running SDK 2.6 which performs poorly with this kernel."); applog(LOG_WARNING, "Downgrade your SDK and delete any .bin files before starting again."); applog(LOG_WARNING, "Or allow cgminer to automatically choose a more suitable kernel."); } } /* For some reason 2 vectors is still better even if the card says * otherwise, and many cards lie about their max so use 256 as max * unless explicitly set on the command line. Tahiti prefers 1 */ if (strstr(name, "Tahiti")) preferred_vwidth = 1; else if (preferred_vwidth > 2) preferred_vwidth = 2; switch (clState->chosen_kernel) { case KL_POCLBM: strcpy(filename, POCLBM_KERNNAME".cl"); strcpy(binaryfilename, POCLBM_KERNNAME); break; case KL_PHATK: strcpy(filename, PHATK_KERNNAME".cl"); strcpy(binaryfilename, PHATK_KERNNAME); break; case KL_DIAKGCN: strcpy(filename, DIAKGCN_KERNNAME".cl"); strcpy(binaryfilename, DIAKGCN_KERNNAME); break; case KL_SCRYPT: strcpy(filename, SCRYPT_KERNNAME".cl"); strcpy(binaryfilename, SCRYPT_KERNNAME); /* Scrypt only supports vector 1 */ gpus[gpu].vwidth = 1; break; case KL_NONE: /* Shouldn't happen */ case KL_DIABLO: strcpy(filename, DIABLO_KERNNAME".cl"); strcpy(binaryfilename, DIABLO_KERNNAME); break; } if (gpus[gpu].vwidth) clState->vwidth = gpus[gpu].vwidth; else { clState->vwidth = preferred_vwidth; gpus[gpu].vwidth = preferred_vwidth; } if (((clState->chosen_kernel == KL_POCLBM || clState->chosen_kernel == KL_DIABLO || clState->chosen_kernel == KL_DIAKGCN) && clState->vwidth == 1 && clState->hasOpenCL11plus) || opt_scrypt) clState->goffset = true; if (gpus[gpu].work_size && gpus[gpu].work_size <= clState->max_work_size) clState->wsize = gpus[gpu].work_size; else if (strstr(name, "Tahiti")) clState->wsize = 64; else clState->wsize = (clState->max_work_size <= 256 ? clState->max_work_size : 256) / clState->vwidth; gpus[gpu].work_size = clState->wsize; FILE *binaryfile; size_t *binary_sizes; char **binaries; int pl; char *source = file_contents(filename, &pl); size_t sourceSize[] = {(size_t)pl}; cl_uint slot, cpnd; slot = cpnd = 0; if (!source) return NULL; binary_sizes = calloc(sizeof(size_t) * MAX_GPUDEVICES * 4, 1); if (unlikely(!binary_sizes)) { applog(LOG_ERR, "Unable to calloc binary_sizes"); return NULL; } binaries = calloc(sizeof(char *) * MAX_GPUDEVICES * 4, 1); if (unlikely(!binaries)) { applog(LOG_ERR, "Unable to calloc binaries"); return NULL; } #ifdef USE_SCRYPT if (opt_scrypt) { clState->lookup_gap = 2; clState->thread_concurrency = 6144; } #endif strcat(binaryfilename, name); if (clState->goffset) strcat(binaryfilename, "g"); strcat(binaryfilename, "v"); sprintf(numbuf, "%d", clState->vwidth); strcat(binaryfilename, numbuf); strcat(binaryfilename, "w"); sprintf(numbuf, "%d", (int)clState->wsize); strcat(binaryfilename, numbuf); strcat(binaryfilename, "l"); sprintf(numbuf, "%d", (int)sizeof(long)); strcat(binaryfilename, numbuf); strcat(binaryfilename, ".bin"); binaryfile = fopen(binaryfilename, "rb"); if (!binaryfile) { applog(LOG_DEBUG, "No binary found, generating from source"); } else { struct stat binary_stat; if (unlikely(stat(binaryfilename, &binary_stat))) { applog(LOG_DEBUG, "Unable to stat binary, generating from source"); fclose(binaryfile); goto build; } if (!binary_stat.st_size) goto build; binary_sizes[slot] = binary_stat.st_size; binaries[slot] = (char *)calloc(binary_sizes[slot], 1); if (unlikely(!binaries[slot])) { applog(LOG_ERR, "Unable to calloc binaries"); fclose(binaryfile); return NULL; } if (fread(binaries[slot], 1, binary_sizes[slot], binaryfile) != binary_sizes[slot]) { applog(LOG_ERR, "Unable to fread binaries"); fclose(binaryfile); free(binaries[slot]); goto build; } clState->program = clCreateProgramWithBinary(clState->context, 1, &devices[gpu], &binary_sizes[slot], (const unsigned char **)binaries, &status, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Loading Binary into cl_program (clCreateProgramWithBinary)", status); fclose(binaryfile); free(binaries[slot]); goto build; } fclose(binaryfile); applog(LOG_DEBUG, "Loaded binary image %s", binaryfilename); goto built; } ///////////////////////////////////////////////////////////////// // Load CL file, build CL program object, create CL kernel object ///////////////////////////////////////////////////////////////// build: clState->program = clCreateProgramWithSource(clState->context, 1, (const char **)&source, sourceSize, &status); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Loading Binary into cl_program (clCreateProgramWithSource)", status); return NULL; } /* create a cl program executable for all the devices specified */ char *CompilerOptions = calloc(1, 256); #ifdef USE_SCRYPT if (opt_scrypt) sprintf(CompilerOptions, "-D LOOKUP_GAP=%d -D CONCURRENT_THREADS=%d -D WORKSIZE=%d", (int)clState->lookup_gap, (int)clState->thread_concurrency, (int)clState->wsize); else #endif { sprintf(CompilerOptions, "-D WORKSIZE=%d -D VECTORS%d -D WORKVEC=%d", (int)clState->wsize, clState->vwidth, (int)clState->wsize * clState->vwidth); } applog(LOG_DEBUG, "Setting worksize to %d", clState->wsize); if (clState->vwidth > 1) applog(LOG_DEBUG, "Patched source to suit %d vectors", clState->vwidth); if (clState->hasBitAlign) { strcat(CompilerOptions, " -D BITALIGN"); applog(LOG_DEBUG, "cl_amd_media_ops found, setting BITALIGN"); if (strstr(name, "Cedar") || strstr(name, "Redwood") || strstr(name, "Juniper") || strstr(name, "Cypress" ) || strstr(name, "Hemlock" ) || strstr(name, "Caicos" ) || strstr(name, "Turks" ) || strstr(name, "Barts" ) || strstr(name, "Cayman" ) || strstr(name, "Antilles" ) || strstr(name, "Wrestler" ) || strstr(name, "Zacate" ) || strstr(name, "WinterPark" ) || strstr(name, "BeaverCreek" )) patchbfi = true; } else applog(LOG_DEBUG, "cl_amd_media_ops not found, will not set BITALIGN"); if (patchbfi) { strcat(CompilerOptions, " -D BFI_INT"); applog(LOG_DEBUG, "BFI_INT patch requiring device found, patched source with BFI_INT"); } else applog(LOG_DEBUG, "BFI_INT patch requiring device not found, will not BFI_INT patch"); if (clState->goffset) strcat(CompilerOptions, " -D GOFFSET"); applog(LOG_DEBUG, "CompilerOptions: %s", CompilerOptions); status = clBuildProgram(clState->program, 1, &devices[gpu], CompilerOptions , NULL, NULL); free(CompilerOptions); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Building Program (clBuildProgram)", status); 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); applog(LOG_ERR, "%s", log); return NULL; } prog_built = true; status = clGetProgramInfo(clState->program, CL_PROGRAM_NUM_DEVICES, sizeof(cl_uint), &cpnd, NULL); if (unlikely(status != CL_SUCCESS)) { applog(LOG_ERR, "Error %d: Getting program info CL_PROGRAM_NUM_DEVICES. (clGetProgramInfo)", status); return NULL; } status = clGetProgramInfo(clState->program, CL_PROGRAM_BINARY_SIZES, sizeof(size_t)*cpnd, binary_sizes, NULL); if (unlikely(status != CL_SUCCESS)) { applog(LOG_ERR, "Error %d: Getting program info CL_PROGRAM_BINARY_SIZES. (clGetProgramInfo)", status); return NULL; } /* The actual compiled binary ends up in a RANDOM slot! Grr, so we have * to iterate over all the binary slots and find where the real program * is. What the heck is this!? */ for (slot = 0; slot < cpnd; slot++) if (binary_sizes[slot]) break; /* copy over all of the generated binaries. */ applog(LOG_DEBUG, "Binary size for gpu %d found in binary slot %d: %d", gpu, slot, binary_sizes[slot]); if (!binary_sizes[slot]) { applog(LOG_ERR, "OpenCL compiler generated a zero sized binary, FAIL!"); return NULL; } binaries[slot] = calloc(sizeof(char) * binary_sizes[slot], 1); status = clGetProgramInfo(clState->program, CL_PROGRAM_BINARIES, sizeof(char *) * cpnd, binaries, NULL ); if (unlikely(status != CL_SUCCESS)) { applog(LOG_ERR, "Error %d: Getting program info. CL_PROGRAM_BINARIES (clGetProgramInfo)", status); return NULL; } /* Patch the kernel if the hardware supports BFI_INT but it needs to * be hacked in */ if (patchbfi) { unsigned remaining = binary_sizes[slot]; char *w = binaries[slot]; unsigned int start, length; /* Find 2nd incidence of .text, and copy the program's * position and length at a fixed offset from that. Then go * back and find the 2nd incidence of \x7ELF (rewind by one * from ELF) and then patch the opcocdes */ if (!advance(&w, &remaining, ".text")) goto build; w++; remaining--; if (!advance(&w, &remaining, ".text")) { /* 32 bit builds only one ELF */ w--; remaining++; } memcpy(&start, w + 285, 4); memcpy(&length, w + 289, 4); w = binaries[slot]; remaining = binary_sizes[slot]; if (!advance(&w, &remaining, "ELF")) goto build; w++; remaining--; if (!advance(&w, &remaining, "ELF")) { /* 32 bit builds only one ELF */ w--; remaining++; } w--; remaining++; w += start; remaining -= start; applog(LOG_DEBUG, "At %p (%u rem. bytes), to begin patching", w, remaining); patch_opcodes(w, length); status = clReleaseProgram(clState->program); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Releasing program. (clReleaseProgram)", status); return NULL; } clState->program = clCreateProgramWithBinary(clState->context, 1, &devices[gpu], &binary_sizes[slot], (const unsigned char **)&binaries[slot], &status, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Loading Binary into cl_program (clCreateProgramWithBinary)", status); return NULL; } /* Program needs to be rebuilt */ prog_built = false; } free(source); /* Save the binary to be loaded next time */ binaryfile = fopen(binaryfilename, "wb"); if (!binaryfile) { /* Not a fatal problem, just means we build it again next time */ applog(LOG_DEBUG, "Unable to create file %s", binaryfilename); } else { if (unlikely(fwrite(binaries[slot], 1, binary_sizes[slot], binaryfile) != binary_sizes[slot])) { applog(LOG_ERR, "Unable to fwrite to binaryfile"); return NULL; } fclose(binaryfile); } built: if (binaries[slot]) free(binaries[slot]); free(binaries); free(binary_sizes); applog(LOG_INFO, "Initialising kernel %s with%s bitalign, %d vectors and worksize %d", filename, clState->hasBitAlign ? "" : "out", clState->vwidth, clState->wsize); if (!prog_built) { /* create a cl program executable for all the devices specified */ status = clBuildProgram(clState->program, 1, &devices[gpu], NULL, NULL, NULL); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Building Program (clBuildProgram)", status); 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); applog(LOG_ERR, "%s", log); return NULL; } } /* get a kernel object handle for a kernel with the given name */ clState->kernel = clCreateKernel(clState->program, "search", &status); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: Creating Kernel from program. (clCreateKernel)", status); return NULL; } #ifdef USE_SCRYPT if (opt_scrypt) { size_t ipt = (1024 / clState->lookup_gap + (1024 % clState->lookup_gap > 0)); size_t bufsize = 128 * ipt * clState->thread_concurrency; clState->CLbuffer0 = clCreateBuffer(clState->context, CL_MEM_READ_ONLY, 80, NULL, &status); clState->padbuffer8 = clCreateBuffer(clState->context, CL_MEM_READ_WRITE, bufsize, NULL, &status); clState->padbufsize = bufsize; } #endif clState->outputBuffer = clCreateBuffer(clState->context, CL_MEM_WRITE_ONLY, BUFFERSIZE, NULL, &status); if (status != CL_SUCCESS) { applog(LOG_ERR, "Error %d: clCreateBuffer (outputBuffer)", status); return NULL; } return clState; } #endif /* HAVE_OPENCL */