GOSTcoin support for ccminer CUDA miner project, compatible with most nvidia cards
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/* Based on djm code */
#include <stdint.h>
#include "miner.h"
#include "cuda_helper.h"
#include <openssl/sha.h>
static uint32_t *d_hash[MAX_GPUS] ;
extern void pluck_setBlockTarget(const void* data, const void *ptarget);
extern void pluck_cpu_init(int thr_id, uint32_t threads, uint32_t *d_outputHash);
extern uint32_t pluck_cpu_hash(int thr_id, uint32_t threads, uint32_t startNounce, int order);
extern float tp_coef[MAX_GPUS];
#define ROTL(a, b) (((a) << (b)) | ((a) >> (32 - (b))))
//note, this is 64 bytes
static inline void xor_salsa8(uint32_t B[16], const uint32_t Bx[16])
{
#define ROTL(a, b) (((a) << (b)) | ((a) >> (32 - (b))))
uint32_t x00, x01, x02, x03, x04, x05, x06, x07, x08, x09, x10, x11, x12, x13, x14, x15;
int i;
x00 = (B[0] ^= Bx[0]);
x01 = (B[1] ^= Bx[1]);
x02 = (B[2] ^= Bx[2]);
x03 = (B[3] ^= Bx[3]);
x04 = (B[4] ^= Bx[4]);
x05 = (B[5] ^= Bx[5]);
x06 = (B[6] ^= Bx[6]);
x07 = (B[7] ^= Bx[7]);
x08 = (B[8] ^= Bx[8]);
x09 = (B[9] ^= Bx[9]);
x10 = (B[10] ^= Bx[10]);
x11 = (B[11] ^= Bx[11]);
x12 = (B[12] ^= Bx[12]);
x13 = (B[13] ^= Bx[13]);
x14 = (B[14] ^= Bx[14]);
x15 = (B[15] ^= Bx[15]);
for (i = 0; i < 8; i += 2) {
/* Operate on columns. */
x04 ^= ROTL(x00 + x12, 7); x09 ^= ROTL(x05 + x01, 7);
x14 ^= ROTL(x10 + x06, 7); x03 ^= ROTL(x15 + x11, 7);
x08 ^= ROTL(x04 + x00, 9); x13 ^= ROTL(x09 + x05, 9);
x02 ^= ROTL(x14 + x10, 9); x07 ^= ROTL(x03 + x15, 9);
x12 ^= ROTL(x08 + x04, 13); x01 ^= ROTL(x13 + x09, 13);
x06 ^= ROTL(x02 + x14, 13); x11 ^= ROTL(x07 + x03, 13);
x00 ^= ROTL(x12 + x08, 18); x05 ^= ROTL(x01 + x13, 18);
x10 ^= ROTL(x06 + x02, 18); x15 ^= ROTL(x11 + x07, 18);
/* Operate on rows. */
x01 ^= ROTL(x00 + x03, 7); x06 ^= ROTL(x05 + x04, 7);
x11 ^= ROTL(x10 + x09, 7); x12 ^= ROTL(x15 + x14, 7);
x02 ^= ROTL(x01 + x00, 9); x07 ^= ROTL(x06 + x05, 9);
x08 ^= ROTL(x11 + x10, 9); x13 ^= ROTL(x12 + x15, 9);
x03 ^= ROTL(x02 + x01, 13); x04 ^= ROTL(x07 + x06, 13);
x09 ^= ROTL(x08 + x11, 13); x14 ^= ROTL(x13 + x12, 13);
x00 ^= ROTL(x03 + x02, 18); x05 ^= ROTL(x04 + x07, 18);
x10 ^= ROTL(x09 + x08, 18); x15 ^= ROTL(x14 + x13, 18);
}
B[0] += x00;
B[1] += x01;
B[2] += x02;
B[3] += x03;
B[4] += x04;
B[5] += x05;
B[6] += x06;
B[7] += x07;
B[8] += x08;
B[9] += x09;
B[10] += x10;
B[11] += x11;
B[12] += x12;
B[13] += x13;
B[14] += x14;
B[15] += x15;
#undef ROTL
}
static void sha256_hash(uchar *hash, const uchar *data, int len)
{
SHA256_CTX ctx;
SHA256_Init(&ctx);
SHA256_Update(&ctx, data, len);
SHA256_Final(hash, &ctx);
}
// hash exactly 64 bytes (ie, sha256 block size)
static void sha256_hash512(uint32_t *hash, const uint32_t *data)
{
uint32_t _ALIGN(64) S[16];
uint32_t _ALIGN(64) T[16];
uchar _ALIGN(64) E[64] = { 0 };
int i;
sha256_init(S);
for (i = 0; i < 16; i++)
T[i] = be32dec(&data[i]);
sha256_transform(S, T, 0);
E[3] = 0x80;
E[61] = 0x02; // T[15] = 8 * 64 => 0x200;
sha256_transform(S, (uint32_t*)E, 0);
for (i = 0; i < 8; i++)
be32enc(&hash[i], S[i]);
}
#define BLOCK_HEADER_SIZE 80
void pluckhash(uint32_t *hash, const uint32_t *data, uchar *hashbuffer, const int N)
{
int size = N * 1024;
sha256_hash(hashbuffer, (uchar*)data, BLOCK_HEADER_SIZE);
memset(&hashbuffer[32], 0, 32);
for (int i = 64; i < size - 32; i += 32)
{
uint32_t _ALIGN(64) randseed[16];
uint32_t _ALIGN(64) randbuffer[16];
uint32_t _ALIGN(64) joint[16];
//i-4 because we use integers for all references against this, and we don't want to go 3 bytes over the defined area
//we could use size here, but then it's probable to use 0 as the value in most cases
int randmax = i - 4;
//setup randbuffer to be an array of random indexes
memcpy(randseed, &hashbuffer[i - 64], 64);
if (i > 128) memcpy(randbuffer, &hashbuffer[i - 128], 64);
else memset(randbuffer, 0, 64);
xor_salsa8((uint32_t*)randbuffer, (uint32_t*)randseed);
memcpy(joint, &hashbuffer[i - 32], 32);
//use the last hash value as the seed
for (int j = 32; j < 64; j += 4)
{
//every other time, change to next random index
//randmax - 32 as otherwise we go beyond memory that's already been written to
uint32_t rand = randbuffer[(j - 32) >> 2] % (randmax - 32);
joint[j >> 2] = *((uint32_t *)&hashbuffer[rand]);
}
sha256_hash512((uint32_t*)&hashbuffer[i], joint);
//setup randbuffer to be an array of random indexes
//use last hash value and previous hash value(post-mixing)
memcpy(randseed, &hashbuffer[i - 32], 64);
if (i > 128) memcpy(randbuffer, &hashbuffer[i - 128], 64);
else memset(randbuffer, 0, 64);
xor_salsa8((uint32_t*)randbuffer, (uint32_t*)randseed);
//use the last hash value as the seed
for (int j = 0; j < 32; j += 2)
{
uint32_t rand = randbuffer[j >> 1] % randmax;
*((uint32_t *)(hashbuffer + rand)) = *((uint32_t *)(hashbuffer + j + randmax));
}
}
memcpy(hash, hashbuffer, 32);
}
static bool init[MAX_GPUS] = { 0 };
static uchar* scratchbuf = NULL;
extern "C" int scanhash_pluck(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
uint32_t max_nonce, unsigned long *hashes_done)
{
const uint32_t first_nonce = pdata[19];
uint32_t endiandata[20];
int opt_pluck_n = 128;
int intensity = is_windows() ? 17 : 19; /* beware > 20 could work and create diff problems later */
uint32_t throughput = device_intensity(thr_id, __func__, 1U << intensity);
// divide by 128 for this algo which require a lot of memory
throughput = throughput / 128 - 256;
throughput = min(throughput, max_nonce - first_nonce + 1);
if (opt_benchmark)
((uint32_t*)ptarget)[7] = 0x0000ff;
if (!init[thr_id])
{
cudaSetDevice(device_map[thr_id]);
//cudaDeviceReset();
//cudaSetDeviceFlags(cudaDeviceScheduleBlockingSync);
//cudaDeviceSetCacheConfig(cudaFuncCachePreferL1);
cudaMalloc(&d_hash[thr_id], opt_pluck_n * 1024 * throughput);
if (!scratchbuf)
scratchbuf = (uchar*) calloc(opt_pluck_n, 1024);
pluck_cpu_init(thr_id, throughput, d_hash[thr_id]);
init[thr_id] = true;
}
for (int k = 0; k < 20; k++)
be32enc(&endiandata[k], ((uint32_t*)pdata)[k]);
pluck_setBlockTarget(endiandata,ptarget);
do {
uint32_t foundNonce = pluck_cpu_hash(thr_id, throughput, pdata[19], 0);
if (foundNonce != UINT32_MAX)
{
const uint32_t Htarg = ptarget[7];
uint32_t vhash64[8];
be32enc(&endiandata[19], foundNonce);
pluckhash(vhash64, endiandata, scratchbuf, opt_pluck_n);
if (vhash64[7] <= Htarg && fulltest(vhash64, ptarget)) {
*hashes_done = pdata[19] - first_nonce + throughput;
pdata[19] = foundNonce;
return 1;
} else {
applog(LOG_INFO, "GPU #%d: result for %08x does not validate on CPU!", thr_id, foundNonce);
}
}
pdata[19] += throughput;
} while (pdata[19] < max_nonce && !work_restart[thr_id].restart);
*hashes_done = pdata[19] - first_nonce;
return 0;
}