/*
* Copyright 2011 Con Kolivas
*/
#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"
extern int opt_vectors;
extern int opt_worksize;
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() {
cl_int status = 0;
cl_uint numPlatforms;
cl_platform_id platform = NULL;
status = clGetPlatformIDs(0, NULL, &numPlatforms);
/* If this fails, assume no GPUs. */
if (status != CL_SUCCESS) {
applog(LOG_INFO, "clGetPlatformsIDs failed (no GPU?)");
return 0;
}
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)
{
applog(LOG_ERR, "Error: Getting Platform Ids. (clGetPlatformsIDs)");
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)
{
applog(LOG_ERR, "Error: Getting Platform Info. (clGetPlatformInfo)");
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) {
applog(LOG_ERR, "Error: Getting Device IDs (num)");
return -1;
}
return numDevices;
}
static int advance(char **area, unsigned *remaining, const char *marker)
{
char *find = memmem(*area, *remaining, marker, strlen(marker));
if (!find) {
if (opt_debug)
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;
}
if (opt_debug) {
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)
{
int patchbfi = 0;
cl_int status = 0;
unsigned int i;
_clState *clState = calloc(1, sizeof(_clState));
cl_uint numPlatforms;
cl_platform_id platform = NULL;
status = clGetPlatformIDs(0, NULL, &numPlatforms);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: Getting Platforms. (clGetPlatformsIDs)");
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)
{
applog(LOG_ERR, "Error: Getting Platform Ids. (clGetPlatformsIDs)");
return NULL;
}
for(i = 0; i < numPlatforms; ++i) {
char pbuff[100];
status = clGetPlatformInfo( platforms[i], CL_PLATFORM_VENDOR, sizeof(pbuff), pbuff, NULL);
if (status != CL_SUCCESS)
{
applog(LOG_ERR, "Error: Getting Platform Info. (clGetPlatformInfo)");
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) {
applog(LOG_ERR, "Error: Getting Device IDs (num)");
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) {
applog(LOG_ERR, "Error: Getting Device IDs (list)");
return NULL;
}
applog(LOG_INFO, "List of devices:");
unsigned 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) {
applog(LOG_ERR, "Error: Getting Device Info");
return NULL;
}
applog(LOG_INFO, "\t%i\t%s", i, pbuff);
}
if (gpu < numDevices) {
char pbuff[100];
status = clGetDeviceInfo(devices[gpu], CL_DEVICE_NAME, sizeof(pbuff), pbuff, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: Getting Device Info");
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_GPU, NULL, NULL, &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: Creating Context. (clCreateContextFromType)");
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: Failed to clGetDeviceInfo when trying to get CL_DEVICE_EXTENSIONS");
return NULL;
}
find = strstr(extensions, camo);
if (find)
clState->hasBitAlign = patchbfi = 1;
status = clGetDeviceInfo(devices[gpu], CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT, sizeof(cl_uint), (void *)&clState->preferred_vwidth, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: Failed to clGetDeviceInfo when trying to get CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT");
return NULL;
}
if (opt_debug)
applog(LOG_DEBUG, "Preferred vector width reported %d", clState->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: Failed to clGetDeviceInfo when trying to get CL_DEVICE_MAX_WORK_GROUP_SIZE");
return NULL;
}
if (opt_debug)
applog(LOG_DEBUG, "Max work group size reported %d", clState->max_work_size);
/* 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 */
if (clState->preferred_vwidth > 1)
clState->preferred_vwidth = 2;
if (opt_vectors)
clState->preferred_vwidth = opt_vectors;
if (opt_worksize && opt_worksize <= clState->max_work_size)
clState->work_size = opt_worksize;
else
clState->work_size = (clState->max_work_size <= 256 ? clState->max_work_size : 256) /
clState->preferred_vwidth;
/* 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 +/i bitalign + v + vectors + w + work_size + sizeof(long) + .bin
*/
char binaryfilename[255];
char numbuf[10];
char filename[16];
if (chosen_kernel == KL_NONE) {
if (clState->hasBitAlign)
chosen_kernel = KL_PHATK;
else
chosen_kernel = KL_POCLBM;
}
switch (chosen_kernel) {
case KL_POCLBM:
strcpy(filename, "poclbm110817.cl");
strcpy(binaryfilename, "poclbm110817");
break;
case KL_NONE: /* Shouldn't happen */
case KL_PHATK:
strcpy(filename, "phatk110817.cl");
strcpy(binaryfilename, "phatk110817");
break;
}
FILE *binaryfile;
size_t *binary_sizes;
char **binaries;
int pl;
char *source = file_contents(filename, &pl);
size_t sourceSize[] = {(size_t)pl};
if (!source)
return NULL;
binary_sizes = (size_t *)malloc(sizeof(size_t)*numDevices);
if (unlikely(!binary_sizes)) {
applog(LOG_ERR, "Unable to malloc binary_sizes");
return NULL;
}
binaries = (char **)malloc(sizeof(char *)*numDevices);
if (unlikely(!binaries)) {
applog(LOG_ERR, "Unable to malloc binaries");
return NULL;
}
strcat(binaryfilename, name);
if (clState->hasBitAlign)
strcat(binaryfilename, "bitalign");
strcat(binaryfilename, "v");
sprintf(numbuf, "%d", clState->preferred_vwidth);
strcat(binaryfilename, numbuf);
strcat(binaryfilename, "w");
sprintf(numbuf, "%d", (int)clState->work_size);
strcat(binaryfilename, numbuf);
strcat(binaryfilename, "long");
sprintf(numbuf, "%d", (int)sizeof(long));
strcat(binaryfilename, numbuf);
strcat(binaryfilename, ".bin");
binaryfile = fopen(binaryfilename, "rb");
if (!binaryfile) {
if (opt_debug)
applog(LOG_DEBUG, "No binary found, generating from source");
} else {
struct stat binary_stat;
if (unlikely(stat(binaryfilename, &binary_stat))) {
if (opt_debug)
applog(LOG_DEBUG, "Unable to stat binary, generating from source");
fclose(binaryfile);
goto build;
}
if (!binary_stat.st_size)
goto build;
binary_sizes[gpu] = binary_stat.st_size;
binaries[gpu] = (char *)malloc(binary_sizes[gpu]);
if (unlikely(!binaries[gpu])) {
applog(LOG_ERR, "Unable to malloc binaries");
fclose(binaryfile);
return NULL;
}
if (fread(binaries[gpu], 1, binary_sizes[gpu], binaryfile) != binary_sizes[gpu]) {
applog(LOG_ERR, "Unable to fread binaries[gpu]");
fclose(binaryfile);
free(binaries[gpu]);
goto build;
}
clState->program = clCreateProgramWithBinary(clState->context, 1, &devices[gpu], &binary_sizes[gpu], (const unsigned char **)&binaries[gpu], &status, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: Loading Binary into cl_program (clCreateProgramWithBinary)");
fclose(binaryfile);
free(binaries[gpu]);
goto build;
}
fclose(binaryfile);
if (opt_debug)
applog(LOG_DEBUG, "Loaded binary image %s", binaryfilename);
free(binaries[gpu]);
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: Loading Binary into cl_program (clCreateProgramWithSource)");
return NULL;
}
clRetainProgram(clState->program);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: Retaining Program (clRetainProgram)");
return NULL;
}
/* create a cl program executable for all the devices specified */
char CompilerOptions[256];
sprintf(CompilerOptions, "-DWORKSIZE=%d -DVECTORS%d",
(int)clState->work_size, clState->preferred_vwidth);
if (opt_debug)
applog(LOG_DEBUG, "Setting worksize to %d", clState->work_size);
if (clState->preferred_vwidth > 1 && opt_debug)
applog(LOG_DEBUG, "Patched source to suit %d vectors", clState->preferred_vwidth);
if (clState->hasBitAlign) {
strcat(CompilerOptions, " -DBITALIGN");
if (opt_debug)
applog(LOG_DEBUG, "cl_amd_media_ops found, patched source with BITALIGN");
} else if (opt_debug)
applog(LOG_DEBUG, "cl_amd_media_ops not found, will not BITALIGN patch");
if (patchbfi) {
strcat(CompilerOptions, " -DBFI_INT");
if (opt_debug)
applog(LOG_DEBUG, "cl_amd_media_ops found, patched source with BFI_INT");
} else if (opt_debug)
applog(LOG_DEBUG, "cl_amd_media_ops not found, will not BFI_INT patch");
//int n = 1000;
//while(n--)
// printf("%s", CompilerOptions);
//return 1;
status = clBuildProgram(clState->program, 1, &devices[gpu], CompilerOptions , NULL, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: Building Program (clBuildProgram)");
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_INFO, "%s", log);
return NULL;
}
status = clGetProgramInfo( clState->program, CL_PROGRAM_BINARY_SIZES, sizeof(size_t)*numDevices, binary_sizes, NULL );
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error: Getting program info CL_PROGRAM_BINARY_SIZES. (clGetPlatformInfo)");
return NULL;
}
/* copy over all of the generated binaries. */
if (opt_debug)
applog(LOG_DEBUG, "binary size %d : %d", gpu, binary_sizes[gpu]);
if (!binary_sizes[gpu]) {
applog(LOG_ERR, "OpenCL compiler generated a zero sized binary, may need to reboot!");
return NULL;
}
binaries[gpu] = (char *)malloc( sizeof(char)*binary_sizes[gpu]);
status = clGetProgramInfo( clState->program, CL_PROGRAM_BINARIES, sizeof(char *)*numDevices, binaries, NULL );
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error: Getting program info. (clGetPlatformInfo)");
return NULL;
}
/* Patch the kernel if the hardware supports BFI_INT */
if (patchbfi) {
unsigned remaining = binary_sizes[gpu];
char *w = binaries[gpu];
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"))
{patchbfi = 0; 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[gpu]; remaining = binary_sizes[gpu];
if (!advance(&w, &remaining, "ELF"))
{patchbfi = 0; goto build;}
w++; remaining--;
if (!advance(&w, &remaining, "ELF")) {
/* 32 bit builds only one ELF */
w--; remaining++;
}
w--; remaining++;
w += start; remaining -= start;
if (opt_debug)
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: Releasing program. (clReleaseProgram)");
return NULL;
}
clState->program = clCreateProgramWithBinary(clState->context, 1, &devices[gpu], &binary_sizes[gpu], (const unsigned char **)&binaries[gpu], &status, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: Loading Binary into cl_program (clCreateProgramWithBinary)");
return NULL;
}
clRetainProgram(clState->program);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: Retaining Program (clRetainProgram)");
return NULL;
}
}
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 */
if (opt_debug)
applog(LOG_DEBUG, "Unable to create file %s", binaryfilename);
} else {
if (unlikely(fwrite(binaries[gpu], 1, binary_sizes[gpu], binaryfile) != binary_sizes[gpu])) {
applog(LOG_ERR, "Unable to fwrite to binaryfile");
return NULL;
}
fclose(binaryfile);
}
if (binaries[gpu])
free(binaries[gpu]);
built:
free(binaries);
free(binary_sizes);
applog(LOG_INFO, "Initialising kernel %s with%s BFI_INT patching, %d vectors and worksize %d",
filename, patchbfi ? "" : "out", clState->preferred_vwidth, clState->work_size);
/* 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: Building Program (clBuildProgram)");
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_INFO, "%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: Creating Kernel from program. (clCreateKernel)");
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, "Creating Command Queue. (clCreateCommandQueue)");
return NULL;
}
clState->outputBuffer = clCreateBuffer(clState->context, CL_MEM_READ_WRITE, BUFFERSIZE, NULL, &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error: clCreateBuffer (outputBuffer)");
return NULL;
}
return clState;
}
#endif /* HAVE_OPENCL */
