GOSTcoin support for ccminer CUDA miner project, compatible with most nvidia cards

108 lines
2.4 KiB

#include <string.h>
#include <stdint.h>
#include <cuda_runtime.h>
#include "sph/sph_fugue.h"
#include "miner.h"
#include "cuda_fugue256.h"
#define SWAP32(x) \
((((x) << 24) & 0xff000000u) | (((x) << 8) & 0x00ff0000u) | \
(((x) >> 8) & 0x0000ff00u) | (((x) >> 24) & 0x000000ffu))
void fugue256_hash(unsigned char* output, const unsigned char* input, int len)
{
sph_fugue256_context ctx;
sph_fugue256_init(&ctx);
sph_fugue256(&ctx, input, len);
sph_fugue256_close(&ctx, (void *)output);
}
static bool init[MAX_GPUS] = { 0 };
int scanhash_fugue256(int thr_id, struct work* work, uint32_t max_nonce, unsigned long *hashes_done)
{
uint32_t _ALIGN(64) endiandata[20];
uint32_t *pdata = work->data;
uint32_t *ptarget = work->target;
uint32_t start_nonce = pdata[19]++;
int intensity = (device_sm[device_map[thr_id]] > 500) ? 22 : 19;
uint32_t throughput = cuda_default_throughput(thr_id, 1U << intensity);
if (init[thr_id]) throughput = min(throughput, max_nonce - start_nonce);
if (opt_benchmark)
ptarget[7] = 0xf;
// init
if(!init[thr_id])
{
cudaSetDevice(device_map[thr_id]);
fugue256_cpu_init(thr_id, throughput);
init[thr_id] = true;
}
// Endian
for (int kk=0; kk < 20; kk++)
be32enc(&endiandata[kk], pdata[kk]);
fugue256_cpu_setBlock(thr_id, endiandata, (void*)ptarget);
do {
// GPU
uint32_t foundNounce = UINT32_MAX;
fugue256_cpu_hash(thr_id, throughput, pdata[19], NULL, &foundNounce);
*hashes_done = pdata[19] - start_nonce + throughput;
if (foundNounce < UINT32_MAX && bench_algo < 0)
{
uint32_t vhash[8];
sph_fugue256_context ctx_fugue;
endiandata[19] = SWAP32(foundNounce);
sph_fugue256_init(&ctx_fugue);
sph_fugue256 (&ctx_fugue, endiandata, 80);
sph_fugue256_close(&ctx_fugue, &vhash);
if (vhash[7] <= ptarget[7] && fulltest(vhash, ptarget))
{
work_set_target_ratio(work, vhash);
pdata[19] = foundNounce;
return 1;
} else {
gpulog(LOG_WARNING, thr_id, "result for %08x does not validate on CPU!", foundNounce);
}
}
if ((uint64_t) throughput + pdata[19] >= max_nonce) {
pdata[19] = max_nonce;
break;
}
pdata[19] += throughput;
} while (!work_restart[thr_id].restart);
*hashes_done = pdata[19] - start_nonce;
return 0;
}
// cleanup
void free_fugue256(int thr_id)
{
if (!init[thr_id])
return;
cudaThreadSynchronize();
fugue256_cpu_free(thr_id);
init[thr_id] = false;
cudaDeviceSynchronize();
}