GOSTcoin support for ccminer CUDA miner project, compatible with most nvidia cards
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/*
* qubit algorithm
*
*/
extern "C" {
#include "sph/sph_luffa.h"
}
#include "miner.h"
#include "cuda_helper.h"
extern int device_map[8];
static uint32_t *d_hash[8];
extern void qubit_luffa512_cpu_init(int thr_id, int threads);
extern void qubit_luffa512_cpu_setBlock_80(void *pdata);
extern void qubit_luffa512_cpu_hash_80(int thr_id, int threads, uint32_t startNounce, uint32_t *d_hash, int order);
extern void qubit_luffa512_cpufinal_setBlock_80(void *pdata, const void *ptarget);
extern uint32_t qubit_luffa512_cpu_finalhash_80(int thr_id, int threads, uint32_t startNounce, uint32_t *d_hash, int order);
extern void doomhash(void *state, const void *input)
{
// luffa512
sph_luffa512_context ctx_luffa;
uint8_t hash[64];
sph_luffa512_init(&ctx_luffa);
sph_luffa512 (&ctx_luffa, input, 80);
sph_luffa512_close(&ctx_luffa, (void*) hash);
memcpy(state, hash, 32);
}
extern "C" int scanhash_doom(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];
static bool init[8] = {0,0,0,0,0,0,0,0};
uint32_t endiandata[20];
int throughput = opt_work_size ? opt_work_size : (1 << 22); // 256*256*8*8
throughput = min(throughput, max_nonce - first_nonce);
if (opt_benchmark)
((uint32_t*)ptarget)[7] = 0x0000f;
if (!init[thr_id])
{
cudaSetDevice(device_map[thr_id]);
CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], 16 * sizeof(uint32_t) * throughput));
qubit_luffa512_cpu_init(thr_id, throughput);
init[thr_id] = true;
}
for (int k=0; k < 20; k++)
be32enc(&endiandata[k], ((uint32_t*)pdata)[k]);
qubit_luffa512_cpufinal_setBlock_80((void*)endiandata,ptarget);
do {
const uint32_t Htarg = ptarget[7];
int order = 0;
uint32_t foundNonce = qubit_luffa512_cpu_finalhash_80(thr_id, throughput, pdata[19], d_hash[thr_id], order++);
if (foundNonce != 0xffffffff)
{
uint32_t vhash64[8];
be32enc(&endiandata[19], foundNonce);
doomhash(vhash64, endiandata);
if (vhash64[7] <= Htarg && fulltest(vhash64, ptarget) )
{
pdata[19] = foundNonce;
*hashes_done = foundNonce - first_nonce + 1;
return 1;
} else {
applog(LOG_INFO, "GPU #%d: result for nonce $%08X does not validate on CPU!", thr_id, foundNonce);
}
}
pdata[19] += throughput;
if ((uint64_t) pdata[19] + throughput > max_nonce) {
pdata[19] = max_nonce;
break;
}
} while (!work_restart[thr_id].restart);
*hashes_done = pdata[19] - first_nonce + 1;
return 0;
}