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oclengine.c
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oclengine.c
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/*
* KoHMiner (based on Vanitygen, vanity bitcoin address generator)
* Copyright (C) 2011 <[email protected]>
* Copyright (C) 2019 Asen Kovachev (@asenski, GitHub: akovachev)
*
* KoHMiner is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* KoHMiner is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with KoHMiner. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <assert.h>
#include <pthread.h>
#include <openssl/ec.h>
#include <openssl/bn.h>
#include <openssl/rand.h>
#include <openssl/evp.h>
#define CL_USE_DEPRECATED_OPENCL_1_2_APIS
#ifdef __APPLE__
#include <OpenCL/cl.h>
#ifndef CL_CALLBACK
#define CL_CALLBACK
#endif
#else
#include <CL/cl.h>
#endif
#include "oclengine.h"
#include "pattern.h"
#include "util.h"
// Unfortunately we need this!
#if OPENSSL_VERSION_NUMBER >= 0x0010100000
#define PPNT_ARROW_X ppnt->X
#define PPNT_ARROW_Y ppnt->Y
#define PPNT_ARROW_Z ppnt->Z
#define PPS_ARROW_X pps->X
#define PPS_ARROW_Y pps->Y
#define PPS_ARROW_Z pps->Z
#define PPT_ARROW_X ppt->X
#define PPT_ARROW_Y ppt->Y
#define PPR_ARROW_X ppr->X
#define PPR_ARROW_Y ppr->Y
#define PPC_ARROW_X ppc->X
#define PPC_ARROW_Y ppc->Y
#else
#define PPNT_ARROW_X &ppnt->X
#define PPNT_ARROW_Y &ppnt->Y
#define PPNT_ARROW_Z &ppnt->Z
#define PPS_ARROW_X &pps->X
#define PPS_ARROW_Y &pps->Y
#define PPS_ARROW_Z &pps->Z
#define PPT_ARROW_X &ppt->X
#define PPT_ARROW_Y &ppt->Y
#define PPR_ARROW_X &ppr->X
#define PPR_ARROW_Y &ppr->Y
#define PPC_ARROW_X &ppc->X
#define PPC_ARROW_Y &ppc->Y
#endif
#define MAX_SLOT 2
#define MAX_ARG 6
#define MAX_KERNEL 3
#define is_pow2(v) (!((v) & ((v)-1)))
#define round_up_pow2(x, a) (((x) + ((a)-1)) & ~((a)-1))
static void vg_ocl_free_args(vg_ocl_context_t *vocp);
static void *vg_opencl_loop(vg_exec_context_t *arg);
/* OpenCL address searching mode */
struct _vg_ocl_context_s;
typedef int (*vg_ocl_init_t)(struct _vg_ocl_context_s *);
typedef int (*vg_ocl_check_t)(struct _vg_ocl_context_s *, int slot);
struct _vg_ocl_context_s {
vg_exec_context_t base;
cl_device_id voc_ocldid;
cl_context voc_oclctx;
cl_command_queue voc_oclcmdq;
cl_program voc_oclprog;
vg_ocl_init_t voc_init_func;
vg_ocl_init_t voc_rekey_func;
vg_ocl_check_t voc_check_func;
int voc_quirks;
int voc_nslots;
cl_kernel voc_oclkernel[MAX_SLOT][MAX_KERNEL];
cl_event voc_oclkrnwait[MAX_SLOT];
cl_mem voc_args[MAX_SLOT][MAX_ARG];
size_t voc_arg_size[MAX_SLOT][MAX_ARG];
int voc_pattern_rewrite;
int voc_pattern_alloc;
vg_ocl_check_t voc_verify_func[MAX_KERNEL];
pthread_t voc_ocl_thread;
pthread_mutex_t voc_lock;
pthread_cond_t voc_wait;
int voc_ocl_slot;
int voc_ocl_rows;
int voc_ocl_cols;
int voc_ocl_invsize;
int voc_halt;
int voc_dump_done;
};
/* Thread synchronization stubs */
void
vg_exec_downgrade_lock(vg_exec_context_t *vxcp)
{
}
int
vg_exec_upgrade_lock(vg_exec_context_t *vxcp)
{
return 0;
}
/*
* OpenCL debugging and support
*/
static const char *
vg_ocl_strerror(cl_int ret)
{
#define OCL_STATUS(st) case st: return #st;
switch (ret) {
OCL_STATUS(CL_SUCCESS);
OCL_STATUS(CL_DEVICE_NOT_FOUND);
OCL_STATUS(CL_DEVICE_NOT_AVAILABLE);
OCL_STATUS(CL_COMPILER_NOT_AVAILABLE);
OCL_STATUS(CL_MEM_OBJECT_ALLOCATION_FAILURE);
OCL_STATUS(CL_OUT_OF_RESOURCES);
OCL_STATUS(CL_OUT_OF_HOST_MEMORY);
OCL_STATUS(CL_PROFILING_INFO_NOT_AVAILABLE);
OCL_STATUS(CL_MEM_COPY_OVERLAP);
OCL_STATUS(CL_IMAGE_FORMAT_MISMATCH);
OCL_STATUS(CL_IMAGE_FORMAT_NOT_SUPPORTED);
OCL_STATUS(CL_BUILD_PROGRAM_FAILURE);
OCL_STATUS(CL_MAP_FAILURE);
#if defined(CL_MISALIGNED_SUB_BUFFER_OFFSET)
OCL_STATUS(CL_MISALIGNED_SUB_BUFFER_OFFSET);
#endif /* defined(CL_MISALIGNED_SUB_BUFFER_OFFSET) */
#if defined(CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST)
OCL_STATUS(CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST);
#endif /* defined(CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST) */
OCL_STATUS(CL_INVALID_VALUE);
OCL_STATUS(CL_INVALID_DEVICE_TYPE);
OCL_STATUS(CL_INVALID_PLATFORM);
OCL_STATUS(CL_INVALID_DEVICE);
OCL_STATUS(CL_INVALID_CONTEXT);
OCL_STATUS(CL_INVALID_QUEUE_PROPERTIES);
OCL_STATUS(CL_INVALID_COMMAND_QUEUE);
OCL_STATUS(CL_INVALID_HOST_PTR);
OCL_STATUS(CL_INVALID_MEM_OBJECT);
OCL_STATUS(CL_INVALID_IMAGE_FORMAT_DESCRIPTOR);
OCL_STATUS(CL_INVALID_IMAGE_SIZE);
OCL_STATUS(CL_INVALID_SAMPLER);
OCL_STATUS(CL_INVALID_BINARY);
OCL_STATUS(CL_INVALID_BUILD_OPTIONS);
OCL_STATUS(CL_INVALID_PROGRAM);
OCL_STATUS(CL_INVALID_PROGRAM_EXECUTABLE);
OCL_STATUS(CL_INVALID_KERNEL_NAME);
OCL_STATUS(CL_INVALID_KERNEL_DEFINITION);
OCL_STATUS(CL_INVALID_KERNEL);
OCL_STATUS(CL_INVALID_ARG_INDEX);
OCL_STATUS(CL_INVALID_ARG_VALUE);
OCL_STATUS(CL_INVALID_ARG_SIZE);
OCL_STATUS(CL_INVALID_KERNEL_ARGS);
OCL_STATUS(CL_INVALID_WORK_DIMENSION);
OCL_STATUS(CL_INVALID_WORK_GROUP_SIZE);
OCL_STATUS(CL_INVALID_WORK_ITEM_SIZE);
OCL_STATUS(CL_INVALID_GLOBAL_OFFSET);
OCL_STATUS(CL_INVALID_EVENT_WAIT_LIST);
OCL_STATUS(CL_INVALID_EVENT);
OCL_STATUS(CL_INVALID_OPERATION);
OCL_STATUS(CL_INVALID_GL_OBJECT);
OCL_STATUS(CL_INVALID_BUFFER_SIZE);
OCL_STATUS(CL_INVALID_MIP_LEVEL);
OCL_STATUS(CL_INVALID_GLOBAL_WORK_SIZE);
#if defined(CL_INVALID_PROPERTY)
OCL_STATUS(CL_INVALID_PROPERTY);
#endif /* defined(CL_INVALID_PROPERTY) */
#undef OCL_STATUS
default: {
static char tmp[64];
snprintf(tmp, sizeof(tmp), "Unknown code %d", ret);
return tmp;
}
}
}
/* Get device strings, using a static buffer -- caveat emptor */
static const char *
vg_ocl_platform_getstr(cl_platform_id pid, cl_platform_info param)
{
static char platform_str[1024];
cl_int ret;
size_t size_ret;
ret = clGetPlatformInfo(pid, param,
sizeof(platform_str), platform_str,
&size_ret);
if (ret != CL_SUCCESS) {
snprintf(platform_str, sizeof(platform_str),
"clGetPlatformInfo(%d): %s",
param, vg_ocl_strerror(ret));
}
return platform_str;
}
static cl_platform_id
vg_ocl_device_getplatform(cl_device_id did)
{
cl_int ret;
cl_platform_id val;
size_t size_ret;
ret = clGetDeviceInfo(did, CL_DEVICE_PLATFORM,
sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr, "clGetDeviceInfo(CL_DEVICE_PLATFORM): %s",
vg_ocl_strerror(ret));
}
return val;
}
static cl_device_type
vg_ocl_device_gettype(cl_device_id did)
{
cl_int ret;
cl_device_type val;
size_t size_ret;
ret = clGetDeviceInfo(did, CL_DEVICE_TYPE,
sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr, "clGetDeviceInfo(CL_DEVICE_TYPE): %s",
vg_ocl_strerror(ret));
}
return val;
}
static const char *
vg_ocl_device_getstr(cl_device_id did, cl_device_info param)
{
static char device_str[1024];
cl_int ret;
size_t size_ret;
ret = clGetDeviceInfo(did, param,
sizeof(device_str), device_str,
&size_ret);
if (ret != CL_SUCCESS) {
snprintf(device_str, sizeof(device_str),
"clGetDeviceInfo(%d): %s",
param, vg_ocl_strerror(ret));
}
return device_str;
}
static size_t
vg_ocl_device_getsizet(cl_device_id did, cl_device_info param)
{
cl_int ret;
size_t val;
size_t size_ret;
ret = clGetDeviceInfo(did, param, sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr,
"clGetDeviceInfo(%d): %s", param, vg_ocl_strerror(ret));
}
return val;
}
static cl_ulong
vg_ocl_device_getulong(cl_device_id did, cl_device_info param)
{
cl_int ret;
cl_ulong val;
size_t size_ret;
ret = clGetDeviceInfo(did, param, sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr,
"clGetDeviceInfo(%d): %s", param, vg_ocl_strerror(ret));
}
return val;
}
static cl_uint
vg_ocl_device_getuint(cl_device_id did, cl_device_info param)
{
cl_int ret;
cl_uint val;
size_t size_ret;
ret = clGetDeviceInfo(did, param, sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr,
"clGetDeviceInfo(%d): %s", param, vg_ocl_strerror(ret));
}
return val;
}
void
vg_ocl_dump_info(vg_ocl_context_t *vocp)
{
cl_device_id did;
if (vocp->base.vxc_vc && (vocp->base.vxc_vc->vc_verbose < 1))
return;
if (vocp->voc_dump_done)
return;
did = vocp->voc_ocldid;
fprintf(stderr, "Device: %s\n",
vg_ocl_device_getstr(did, CL_DEVICE_NAME));
fprintf(stderr, "Vendor: %s (%04x)\n",
vg_ocl_device_getstr(did, CL_DEVICE_VENDOR),
vg_ocl_device_getuint(did, CL_DEVICE_VENDOR_ID));
fprintf(stderr, "Driver: %s\n",
vg_ocl_device_getstr(did, CL_DRIVER_VERSION));
fprintf(stderr, "Profile: %s\n",
vg_ocl_device_getstr(did, CL_DEVICE_PROFILE));
fprintf(stderr, "Version: %s\n",
vg_ocl_device_getstr(did, CL_DEVICE_VERSION));
fprintf(stderr, "Max compute units: %" PRSIZET "d\n",
vg_ocl_device_getsizet(did, CL_DEVICE_MAX_COMPUTE_UNITS));
fprintf(stderr, "Max workgroup size: %" PRSIZET "d\n",
vg_ocl_device_getsizet(did, CL_DEVICE_MAX_WORK_GROUP_SIZE));
fprintf(stderr, "Global memory: %ld\n",
vg_ocl_device_getulong(did, CL_DEVICE_GLOBAL_MEM_SIZE));
fprintf(stderr, "Max allocation: %ld\n",
vg_ocl_device_getulong(did, CL_DEVICE_MAX_MEM_ALLOC_SIZE));
vocp->voc_dump_done = 1;
}
void
vg_ocl_error(vg_ocl_context_t *vocp, int code, const char *desc)
{
const char *err = vg_ocl_strerror(code);
if (desc) {
fprintf(stderr, "%s: %s\n", desc, err);
} else {
fprintf(stderr, "%s\n", err);
}
if (vocp && vocp->voc_ocldid)
vg_ocl_dump_info(vocp);
}
static void
vg_ocl_buildlog(vg_ocl_context_t *vocp, cl_program prog)
{
size_t logbufsize, logsize;
char *log;
int off = 0;
cl_int ret;
ret = clGetProgramBuildInfo(prog,
vocp->voc_ocldid,
CL_PROGRAM_BUILD_LOG,
0, NULL,
&logbufsize);
if (ret != CL_SUCCESS) {
vg_ocl_error(NULL, ret, "clGetProgramBuildInfo");
return;
}
log = (char *) malloc(logbufsize);
if (!log) {
fprintf(stderr, "Could not allocate build log buffer\n");
return;
}
ret = clGetProgramBuildInfo(prog,
vocp->voc_ocldid,
CL_PROGRAM_BUILD_LOG,
logbufsize,
log,
&logsize);
if (ret != CL_SUCCESS) {
vg_ocl_error(NULL, ret, "clGetProgramBuildInfo");
} else {
/* Remove leading newlines and trailing newlines/whitespace */
log[logbufsize-1] = '\0';
for (off = logsize - 1; off >= 0; off--) {
if ((log[off] != '\r') &&
(log[off] != '\n') &&
(log[off] != ' ') &&
(log[off] != '\t') &&
(log[off] != '\0'))
break;
log[off] = '\0';
}
for (off = 0; off < logbufsize; off++) {
if ((log[off] != '\r') &&
(log[off] != '\n'))
break;
}
fprintf(stderr, "Build log:\n%s\n", &log[off]);
}
free(log);
}
/*
* OpenCL per-exec functions
*/
enum {
VG_OCL_DEEP_PREPROC_UNROLL = (1 << 0),
VG_OCL_PRAGMA_UNROLL = (1 << 1),
VG_OCL_EXPENSIVE_BRANCHES = (1 << 2),
VG_OCL_DEEP_VLIW = (1 << 3),
VG_OCL_AMD_BFI_INT = (1 << 4),
VG_OCL_NV_VERBOSE = (1 << 5),
VG_OCL_BROKEN = (1 << 6),
VG_OCL_NO_BINARIES = (1 << 7),
VG_OCL_OPTIMIZATIONS = (VG_OCL_DEEP_PREPROC_UNROLL |
VG_OCL_PRAGMA_UNROLL |
VG_OCL_EXPENSIVE_BRANCHES |
VG_OCL_DEEP_VLIW |
VG_OCL_AMD_BFI_INT),
};
static int
vg_ocl_get_quirks(vg_ocl_context_t *vocp)
{
uint32_t vend;
const char *dvn;
unsigned int quirks = 0;
quirks |= VG_OCL_DEEP_PREPROC_UNROLL;
vend = vg_ocl_device_getuint(vocp->voc_ocldid, CL_DEVICE_VENDOR_ID);
switch (vend) {
case 0x10de: /* NVIDIA */
/*
* NVIDIA's compiler seems to take a really really long
* time when using preprocessor unrolling, but works
* well with pragma unroll.
*/
quirks &= ~VG_OCL_DEEP_PREPROC_UNROLL;
quirks |= VG_OCL_PRAGMA_UNROLL;
quirks |= VG_OCL_NV_VERBOSE;
break;
case 0x1002: /* AMD/ATI */
/*
* AMD's compiler works best with preprocesor unrolling.
* Pragma unroll is unreliable with AMD's compiler and
* seems to crash based on whether the gods were smiling
* when Catalyst was last installed/upgraded.
*/
if (vg_ocl_device_gettype(vocp->voc_ocldid) &
CL_DEVICE_TYPE_GPU) {
quirks |= VG_OCL_EXPENSIVE_BRANCHES;
quirks |= VG_OCL_DEEP_VLIW;
dvn = vg_ocl_device_getstr(vocp->voc_ocldid,
CL_DEVICE_EXTENSIONS);
if (dvn && strstr(dvn, "cl_amd_media_ops"))
quirks |= VG_OCL_AMD_BFI_INT;
dvn = vg_ocl_device_getstr(vocp->voc_ocldid,
CL_DEVICE_NAME);
if (!strcmp(dvn, "Tahiti") || !strcmp(dvn, "Barts") || !strcmp(dvn, "Pitcairn"))
quirks &= ~VG_OCL_AMD_BFI_INT;
if (!strcmp(dvn, "ATI RV710")) {
quirks &= ~VG_OCL_OPTIMIZATIONS;
quirks |= VG_OCL_NO_BINARIES;
}
}
break;
default:
break;
}
return (quirks & ~VG_OCL_AMD_BFI_INT);
}
static int
vg_ocl_create_kernel(vg_ocl_context_t *vocp, int knum, const char *func)
{
int i;
cl_kernel krn;
cl_int ret;
for (i = 0; i < MAX_SLOT; i++) {
krn = clCreateKernel(vocp->voc_oclprog, func, &ret);
if (!krn) {
fprintf(stderr, "clCreateKernel(%d): ", i);
vg_ocl_error(vocp, ret, NULL);
while (--i >= 0) {
clReleaseKernel(vocp->voc_oclkernel[i][knum]);
vocp->voc_oclkernel[i][knum] = NULL;
}
return 0;
}
vocp->voc_oclkernel[i][knum] = krn;
vocp->voc_oclkrnwait[i] = NULL;
}
return 1;
}
static void
vg_ocl_hash_program(vg_ocl_context_t *vocp, const char *opts,
const char *program, size_t size,
unsigned char *hash_out)
{
EVP_MD_CTX *mdctx;
cl_platform_id pid;
const char *str;
mdctx = EVP_MD_CTX_create();
EVP_DigestInit_ex(mdctx, EVP_md5(), NULL);
pid = vg_ocl_device_getplatform(vocp->voc_ocldid);
str = vg_ocl_platform_getstr(pid, CL_PLATFORM_NAME);
EVP_DigestUpdate(mdctx, str, strlen(str) + 1);
str = vg_ocl_platform_getstr(pid, CL_PLATFORM_VERSION);
EVP_DigestUpdate(mdctx, str, strlen(str) + 1);
str = vg_ocl_device_getstr(vocp->voc_ocldid, CL_DEVICE_NAME);
EVP_DigestUpdate(mdctx, str, strlen(str) + 1);
if (opts)
EVP_DigestUpdate(mdctx, opts, strlen(opts) + 1);
if (size)
EVP_DigestUpdate(mdctx, program, size);
EVP_DigestFinal_ex(mdctx, hash_out, NULL);
EVP_MD_CTX_destroy(mdctx);
}
typedef struct {
unsigned char e_ident[16];
uint16_t e_type;
uint16_t e_machine;
uint32_t e_version;
uint32_t e_entry;
uint32_t e_phoff;
uint32_t e_shoff;
uint32_t e_flags;
uint16_t e_ehsize;
uint16_t e_phentsize;
uint16_t e_phnum;
uint16_t e_shentsize;
uint16_t e_shnum;
uint16_t e_shstrndx;
} vg_elf32_header_t;
typedef struct {
uint32_t sh_name;
uint32_t sh_type;
uint32_t sh_flags;
uint32_t sh_addr;
uint32_t sh_offset;
uint32_t sh_size;
uint32_t sh_link;
uint32_t sh_info;
uint32_t sh_addralign;
uint32_t sh_entsize;
} vg_elf32_shdr_t;
static int
vg_ocl_amd_patch_inner(unsigned char *binary, size_t size)
{
vg_elf32_header_t *ehp;
vg_elf32_shdr_t *shp, *nshp;
uint32_t *instr;
size_t off;
int i, n, txt2idx, patched;
ehp = (vg_elf32_header_t *) binary;
if ((size < sizeof(*ehp)) ||
memcmp(ehp->e_ident, "\x7f" "ELF\1\1\1\x64", 8) ||
!ehp->e_shoff)
return 0;
off = ehp->e_shoff + (ehp->e_shstrndx * ehp->e_shentsize);
nshp = (vg_elf32_shdr_t *) (binary + off);
if ((off + sizeof(*nshp)) > size)
return 0;
shp = (vg_elf32_shdr_t *) (binary + ehp->e_shoff);
n = 0;
txt2idx = 0;
for (i = 0; i < ehp->e_shnum; i++) {
off = nshp->sh_offset + shp[i].sh_name;
if (((off + 6) >= size) ||
memcmp(binary + off, ".text", 6))
continue;
n++;
if (n == 2)
txt2idx = i;
}
if (n != 2)
return 0;
off = shp[txt2idx].sh_offset;
instr = (uint32_t *) (binary + off);
n = shp[txt2idx].sh_size / 4;
patched = 0;
for (i = 0; i < n; i += 2) {
if (((instr[i] & 0x02001000) == 0) &&
((instr[i+1] & 0x9003f000) == 0x0001a000)) {
instr[i+1] ^= (0x0001a000 ^ 0x0000c000);
patched++;
}
}
return patched;
}
static int
vg_ocl_amd_patch(vg_ocl_context_t *vocp, unsigned char *binary, size_t size)
{
vg_context_t *vcp = vocp->base.vxc_vc;
vg_elf32_header_t *ehp;
unsigned char *ptr;
size_t offset = 1;
int ninner = 0, nrun, npatched = 0;
ehp = (vg_elf32_header_t *) binary;
if ((size < sizeof(*ehp)) ||
memcmp(ehp->e_ident, "\x7f" "ELF\1\1\1\0", 8) ||
!ehp->e_shoff)
return 0;
offset = 1;
while (offset < (size - 8)) {
ptr = (unsigned char *) memchr(binary + offset,
0x7f,
size - offset);
if (!ptr)
return npatched;
offset = ptr - binary;
ehp = (vg_elf32_header_t *) ptr;
if (((size - offset) < sizeof(*ehp)) ||
memcmp(ehp->e_ident, "\x7f" "ELF\1\1\1\x64", 8) ||
!ehp->e_shoff) {
offset += 1;
continue;
}
ninner++;
nrun = vg_ocl_amd_patch_inner(ptr, size - offset);
npatched += nrun;
if (vcp->vc_verbose > 1)
fprintf(stderr, "AMD BFI_INT: patched %d instructions "
"in kernel %d\n",
nrun, ninner);
npatched++;
offset += 1;
}
return npatched;
}
static int
vg_ocl_load_program(vg_context_t *vcp, vg_ocl_context_t *vocp,
const char *filename, const char *opts)
{
FILE *kfp;
char *buf, *tbuf;
int len, fromsource = 0, patched = 0;
size_t sz, szr;
cl_program prog;
cl_int ret, sts;
unsigned char prog_hash[16];
char bin_name[64];
if (vcp->vc_verbose > 1)
fprintf(stderr,
"OpenCL compiler flags: %s\n", opts ? opts : "");
sz = 128 * 1024;
buf = (char *) malloc(sz);
if (!buf) {
fprintf(stderr, "Could not allocate program buffer\n");
return 0;
}
kfp = fopen(filename, "r");
if (!kfp) {
fprintf(stderr, "Error loading kernel file '%s': %s\n",
filename, strerror(errno));
free(buf);
return 0;
}
len = fread(buf, 1, sz, kfp);
fclose(kfp);
if (!len) {
fprintf(stderr, "Short read on CL kernel\n");
free(buf);
return 0;
}
vg_ocl_hash_program(vocp, opts, buf, len, prog_hash);
snprintf(bin_name, sizeof(bin_name),
"%02x%02x%02x%02x%02x%02x%02x%02x"
"%02x%02x%02x%02x%02x%02x%02x%02x.oclbin",
prog_hash[0], prog_hash[1], prog_hash[2], prog_hash[3],
prog_hash[4], prog_hash[5], prog_hash[6], prog_hash[7],
prog_hash[8], prog_hash[9], prog_hash[10], prog_hash[11],
prog_hash[12], prog_hash[13], prog_hash[14], prog_hash[15]);
if (vocp->voc_quirks & VG_OCL_NO_BINARIES) {
kfp = NULL;
if (vcp->vc_verbose > 1)
fprintf(stderr, "Binary OpenCL programs disabled\n");
} else {
kfp = fopen(bin_name, "rb");
}
if (!kfp) {
/* No binary available, create with source */
fromsource = 1;
sz = len;
prog = clCreateProgramWithSource(vocp->voc_oclctx,
1, (const char **) &buf, &sz,
&ret);
} else {
if (vcp->vc_verbose > 1)
fprintf(stderr, "Loading kernel binary %s\n", bin_name);
szr = 0;
while (!feof(kfp)) {
len = fread(buf + szr, 1, sz - szr, kfp);
if (!len) {
fprintf(stderr,
"Short read on CL kernel binary\n");
fclose(kfp);
free(buf);
return 0;
}
szr += len;
if (szr == sz) {
tbuf = (char *) realloc(buf, sz*2);
if (!tbuf) {
fprintf(stderr,
"Could not expand CL kernel "
"binary buffer\n");
fclose(kfp);
free(buf);
return 0;
}
buf = tbuf;
sz *= 2;
}
}
fclose(kfp);
rebuild:
prog = clCreateProgramWithBinary(vocp->voc_oclctx,
1, &vocp->voc_ocldid,
&szr,
(const unsigned char **) &buf,
&sts,
&ret);
}
free(buf);
if (!prog) {
vg_ocl_error(vocp, ret, "clCreateProgramWithSource");
return 0;
}
if (vcp->vc_verbose > 0) {
if (fromsource && !patched) {
fprintf(stderr,
"Compiling kernel, can take minutes...");
fflush(stderr);
}
}
ret = clBuildProgram(prog, 1, &vocp->voc_ocldid, opts, NULL, NULL);
if (ret != CL_SUCCESS) {
if ((vcp->vc_verbose > 0) && fromsource && !patched)
fprintf(stderr, "failure.\n");
vg_ocl_error(NULL, ret, "clBuildProgram");
} else if ((vcp->vc_verbose > 0) && fromsource && !patched) {
fprintf(stderr, "done!\n");
}
if ((ret != CL_SUCCESS) ||
((vcp->vc_verbose > 1) && fromsource && !patched)) {
vg_ocl_buildlog(vocp, prog);
}
if (ret != CL_SUCCESS) {
vg_ocl_dump_info(vocp);
clReleaseProgram(prog);
return 0;
}
if (fromsource && !(vocp->voc_quirks & VG_OCL_NO_BINARIES)) {
ret = clGetProgramInfo(prog,
CL_PROGRAM_BINARY_SIZES,
sizeof(szr), &szr,
&sz);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret,
"WARNING: clGetProgramInfo(BINARY_SIZES)");
goto out;
}
if (sz == 0) {
fprintf(stderr,
"WARNING: zero-length CL kernel binary\n");
goto out;
}
buf = (char *) malloc(szr);
if (!buf) {
fprintf(stderr,
"WARNING: Could not allocate %" PRSIZET "d bytes "
"for CL binary\n",
szr);
goto out;
}
ret = clGetProgramInfo(prog,
CL_PROGRAM_BINARIES,
sizeof(buf), &buf,
&sz);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret,
"WARNING: clGetProgramInfo(BINARIES)");
free(buf);
goto out;
}
if ((vocp->voc_quirks & VG_OCL_AMD_BFI_INT) && !patched) {
patched = vg_ocl_amd_patch(vocp,
(unsigned char *) buf, szr);
if (patched > 0) {
if (vcp->vc_verbose > 1)
fprintf(stderr,
"AMD BFI_INT patch complete\n");
clReleaseProgram(prog);
goto rebuild;
}
fprintf(stderr,
"WARNING: AMD BFI_INT patching failed\n");
if (patched < 0) {
/* Program was incompletely modified */
free(buf);
goto out;
}
}
kfp = fopen(bin_name, "wb");
if (!kfp) {
fprintf(stderr, "WARNING: "
"could not save CL kernel binary: %s\n",
strerror(errno));
} else {
sz = fwrite(buf, 1, szr, kfp);
fclose(kfp);
if (sz != szr) {
fprintf(stderr,
"WARNING: short write on CL kernel "
"binary file: expected "
"%" PRSIZET "d, got %" PRSIZET "d\n",
szr, sz);
unlink(bin_name);
}
}
free(buf);
}
out:
vocp->voc_oclprog = prog;
if (!vg_ocl_create_kernel(vocp, 0, "ec_add_grid") ||
!vg_ocl_create_kernel(vocp, 1, "heap_invert")) {
clReleaseProgram(vocp->voc_oclprog);
vocp->voc_oclprog = NULL;
return 0;
}
return 1;
}
static void CL_CALLBACK
vg_ocl_context_callback(const char *errinfo,
const void *private_info,
size_t cb,
void *user_data)
{
fprintf(stderr, "vg_ocl_context_callback error: %s\n", errinfo);
}
static int
vg_ocl_init(vg_context_t *vcp, vg_ocl_context_t *vocp, cl_device_id did,
int safe_mode)
{
cl_int ret;
char optbuf[128];
int end = 0;
memset(vocp, 0, sizeof(*vocp));
vg_exec_context_init(vcp, &vocp->base);
vocp->base.vxc_threadfunc = vg_opencl_loop;
pthread_mutex_init(&vocp->voc_lock, NULL);
pthread_cond_init(&vocp->voc_wait, NULL);
vocp->voc_ocl_slot = -1;
vocp->voc_ocldid = did;
if (vcp->vc_verbose > 1)
vg_ocl_dump_info(vocp);
vocp->voc_quirks = vg_ocl_get_quirks(vocp);
if ((vocp->voc_quirks & VG_OCL_BROKEN) && (vcp->vc_verbose > 0)) {
char yesbuf[16];
printf("Type 'yes' to continue: ");
fflush(stdout);
if (!fgets(yesbuf, sizeof(yesbuf), stdin) ||
strncmp(yesbuf, "yes", 3))
exit(1);
}
vocp->voc_oclctx = clCreateContext(NULL,
1, &did,
vg_ocl_context_callback,
NULL,
&ret);
if (!vocp->voc_oclctx) {
vg_ocl_error(vocp, ret, "clCreateContext");
return 0;
}
vocp->voc_oclcmdq = clCreateCommandQueue(vocp->voc_oclctx,
vocp->voc_ocldid,
0, &ret);
if (!vocp->voc_oclcmdq) {
vg_ocl_error(vocp, ret, "clCreateCommandQueue");
return 0;
}
if (safe_mode)
vocp->voc_quirks &= ~VG_OCL_OPTIMIZATIONS;
end = 0;
optbuf[end] = '\0';
if (vocp->voc_quirks & VG_OCL_DEEP_PREPROC_UNROLL)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DDEEP_PREPROC_UNROLL ");
if (vocp->voc_quirks & VG_OCL_PRAGMA_UNROLL)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DPRAGMA_UNROLL ");
if (vocp->voc_quirks & VG_OCL_EXPENSIVE_BRANCHES)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DVERY_EXPENSIVE_BRANCHES ");
if (vocp->voc_quirks & VG_OCL_DEEP_VLIW)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DDEEP_VLIW ");
if (vocp->voc_quirks & VG_OCL_AMD_BFI_INT)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DAMD_BFI_INT ");
if (vcp->vc_compressed)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DCOMPRESSED_ADDRESS");
if (vocp->voc_quirks & VG_OCL_NV_VERBOSE)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-cl-nv-verbose ");
if (!vg_ocl_load_program(vcp, vocp, "calc_addrs.cl", optbuf))
return 0;
return 1;
}
static void
vg_ocl_del(vg_ocl_context_t *vocp)
{
vg_ocl_free_args(vocp);
if (vocp->voc_oclprog) {
clReleaseProgram(vocp->voc_oclprog);
vocp->voc_oclprog = NULL;
}
if (vocp->voc_oclcmdq) {
clReleaseCommandQueue(vocp->voc_oclcmdq);
vocp->voc_oclcmdq = NULL;
}
if (vocp->voc_oclctx) {
clReleaseContext(vocp->voc_oclctx);
vocp->voc_oclctx = NULL;
}
pthread_cond_destroy(&vocp->voc_wait);
pthread_mutex_destroy(&vocp->voc_lock);
vg_exec_context_del(&vocp->base);
}