You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
2.3 KiB
98 lines
2.3 KiB
/* |
|
* Keccak 256 |
|
* |
|
*/ |
|
|
|
extern "C" |
|
{ |
|
#include "sph/sph_shavite.h" |
|
#include "sph/sph_simd.h" |
|
#include "sph/sph_keccak.h" |
|
|
|
#include "miner.h" |
|
} |
|
|
|
#include "cuda_helper.h" |
|
|
|
static uint32_t *d_hash[8]; |
|
|
|
extern void keccak256_cpu_init(int thr_id, int threads); |
|
extern void keccak256_setBlock_80(void *pdata,const void *ptarget); |
|
extern uint32_t keccak256_cpu_hash_80(int thr_id, int threads, uint32_t startNounce, uint32_t *d_hash, int order); |
|
|
|
// CPU Hash |
|
extern "C" void keccak256_hash(void *state, const void *input) |
|
{ |
|
sph_keccak_context ctx_keccak; |
|
|
|
uint32_t hash[16]; |
|
|
|
sph_keccak256_init(&ctx_keccak); |
|
sph_keccak256 (&ctx_keccak, input, 80); |
|
sph_keccak256_close(&ctx_keccak, (void*) hash); |
|
|
|
memcpy(state, hash, 32); |
|
} |
|
|
|
extern "C" int scanhash_keccak256(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]; |
|
|
|
if (opt_benchmark) |
|
((uint32_t*)ptarget)[7] = 0x0005; |
|
|
|
int throughput = opt_work_size ? opt_work_size : (1 << 21); // 256*256*8*4 |
|
throughput = min(throughput, max_nonce - first_nonce); |
|
|
|
static bool init[8] = {0,0,0,0,0,0,0,0}; |
|
if (!init[thr_id]) { |
|
cudaSetDevice(device_map[thr_id]); |
|
|
|
CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], 16 * sizeof(uint32_t) * throughput)); |
|
keccak256_cpu_init(thr_id, throughput); |
|
|
|
init[thr_id] = true; |
|
} |
|
|
|
uint32_t endiandata[20]; |
|
for (int k=0; k < 20; k++) { |
|
be32enc(&endiandata[k], ((uint32_t*)pdata)[k]); |
|
} |
|
|
|
keccak256_setBlock_80((void*)endiandata, ptarget); |
|
do { |
|
int order = 0; |
|
|
|
uint32_t foundNonce = keccak256_cpu_hash_80(thr_id, throughput, pdata[19], d_hash[thr_id], order++); |
|
if (foundNonce != 0xffffffff) |
|
{ |
|
uint32_t vhash64[8]; |
|
uint32_t Htarg = ptarget[7]; |
|
be32enc(&endiandata[19], foundNonce); |
|
keccak256_hash(vhash64, endiandata); |
|
|
|
if (vhash64[7] <= Htarg && fulltest(vhash64, ptarget)) { |
|
|
|
pdata[19] = foundNonce; |
|
*hashes_done = foundNonce - first_nonce + 1; |
|
return 1; |
|
|
|
} else { |
|
applog(LOG_DEBUG, "GPU #%d: result for nounce %08x does not validate on CPU!", thr_id, foundNonce); |
|
} |
|
} |
|
|
|
if ((uint64_t) pdata[19] + throughput > (uint64_t) max_nonce) { |
|
pdata[19] = max_nonce; |
|
break; |
|
} |
|
|
|
pdata[19] += throughput; |
|
|
|
} while (!work_restart[thr_id].restart); |
|
|
|
*hashes_done = pdata[19] - first_nonce + 1; |
|
return 0; |
|
}
|
|
|