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129 lines
3.1 KiB
129 lines
3.1 KiB
/* |
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* Keccak 256 |
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* |
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*/ |
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extern "C" |
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{ |
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#include "sph/sph_shavite.h" |
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#include "sph/sph_simd.h" |
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#include "sph/sph_keccak.h" |
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#include "miner.h" |
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} |
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#include "cuda_helper.h" |
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static uint32_t *d_hash[MAX_GPUS]; |
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extern void keccak256_cpu_init(int thr_id, uint32_t threads); |
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extern void keccak256_cpu_free(int thr_id); |
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extern void keccak256_setBlock_80(void *pdata,const void *ptarget); |
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extern uint32_t keccak256_cpu_hash_80(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_hash, int order); |
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// CPU Hash |
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extern "C" void keccak256_hash(void *state, const void *input) |
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{ |
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uint32_t _ALIGN(64) hash[16]; |
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sph_keccak_context ctx_keccak; |
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sph_keccak256_init(&ctx_keccak); |
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sph_keccak256 (&ctx_keccak, input, 80); |
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sph_keccak256_close(&ctx_keccak, (void*) hash); |
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memcpy(state, hash, 32); |
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} |
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static bool init[MAX_GPUS] = { 0 }; |
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extern "C" int scanhash_keccak256(int thr_id, struct work* work, uint32_t max_nonce, unsigned long *hashes_done) |
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{ |
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uint32_t _ALIGN(64) endiandata[20]; |
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uint32_t *pdata = work->data; |
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uint32_t *ptarget = work->target; |
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const uint32_t first_nonce = pdata[19]; |
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uint32_t throughput = cuda_default_throughput(thr_id, 1U << 21); // 256*256*8*4 |
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if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce); |
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if (opt_benchmark) |
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ptarget[7] = 0x000f; |
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if (!init[thr_id]) |
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{ |
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cudaSetDevice(device_map[thr_id]); |
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if (opt_cudaschedule == -1 && gpu_threads == 1) { |
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cudaDeviceReset(); |
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// reduce cpu usage |
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cudaSetDeviceFlags(cudaDeviceScheduleBlockingSync); |
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CUDA_LOG_ERROR(); |
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} |
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gpulog(LOG_INFO, thr_id, "Intensity set to %g, %u cuda threads", throughput2intensity(throughput), throughput); |
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CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], throughput * 64)); |
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keccak256_cpu_init(thr_id, throughput); |
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init[thr_id] = true; |
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} |
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for (int k=0; k < 19; k++) { |
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be32enc(&endiandata[k], pdata[k]); |
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} |
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keccak256_setBlock_80((void*)endiandata, ptarget); |
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do { |
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int order = 0; |
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*hashes_done = pdata[19] - first_nonce + throughput; |
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work->nonces[0] = keccak256_cpu_hash_80(thr_id, throughput, pdata[19], d_hash[thr_id], order++); |
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if (work->nonces[0] != UINT32_MAX && bench_algo < 0) |
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{ |
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const uint32_t Htarg = ptarget[7]; |
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uint32_t _ALIGN(64) vhash[8]; |
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be32enc(&endiandata[19], work->nonces[0]); |
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keccak256_hash(vhash, endiandata); |
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if (vhash[7] <= ptarget[7] && fulltest(vhash, ptarget)) { |
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work->valid_nonces = 1; |
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work_set_target_ratio(work, vhash); |
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pdata[19] = work->nonces[0] + 1; |
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return work->valid_nonces; |
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} |
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else if (vhash[7] > Htarg) { |
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gpu_increment_reject(thr_id); |
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if (!opt_quiet) |
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gpulog(LOG_WARNING, thr_id, "result for %08x does not validate on CPU!", work->nonces[0]); |
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pdata[19] = work->nonces[0] + 1; |
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continue; |
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} |
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} |
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if ((uint64_t) throughput + pdata[19] >= max_nonce) { |
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pdata[19] = max_nonce; |
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break; |
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} |
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pdata[19] += throughput; |
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} while (!work_restart[thr_id].restart); |
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*hashes_done = pdata[19] - first_nonce; |
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return 0; |
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} |
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// cleanup |
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extern "C" void free_keccak256(int thr_id) |
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{ |
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if (!init[thr_id]) |
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return; |
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cudaThreadSynchronize(); |
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cudaFree(d_hash[thr_id]); |
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keccak256_cpu_free(thr_id); |
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cudaDeviceSynchronize(); |
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init[thr_id] = false; |
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}
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