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127 lines
3.2 KiB
127 lines
3.2 KiB
/** |
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* SHA256d |
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* by tpruvot@github - 2017 |
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*/ |
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#include <miner.h> |
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#include <cuda_helper.h> |
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#include <openssl/sha.h> |
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// CPU Check |
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extern "C" void sha256d_hash(void *output, const void *input) |
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{ |
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unsigned char _ALIGN(64) hash[64]; |
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SHA256_CTX sha256; |
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SHA256_Init(&sha256); |
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SHA256_Update(&sha256, (unsigned char *)input, 80); |
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SHA256_Final(hash, &sha256); |
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SHA256_Init(&sha256); |
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SHA256_Update(&sha256, hash, 32); |
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SHA256_Final((unsigned char *)output, &sha256); |
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} |
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static bool init[MAX_GPUS] = { 0 }; |
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extern void sha256d_init(int thr_id); |
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extern void sha256d_free(int thr_id); |
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extern void sha256d_setBlock_80(uint32_t *pdata, uint32_t *ptarget); |
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extern void sha256d_hash_80(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *resNonces); |
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extern "C" int scanhash_sha256d(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 << 25); |
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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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((uint32_t*)ptarget)[7] = 0x03; |
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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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sha256d_init(thr_id); |
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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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sha256d_setBlock_80(endiandata, ptarget); |
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do { |
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// Hash with CUDA |
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*hashes_done = pdata[19] - first_nonce + throughput; |
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sha256d_hash_80(thr_id, throughput, pdata[19], work->nonces); |
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if (work->nonces[0] != UINT32_MAX) |
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{ |
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uint32_t _ALIGN(64) vhash[8]; |
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endiandata[19] = swab32(work->nonces[0]); |
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sha256d_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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if (work->nonces[1] != UINT32_MAX) { |
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endiandata[19] = swab32(work->nonces[1]); |
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sha256d_hash(vhash, endiandata); |
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if (vhash[7] <= ptarget[7] && fulltest(vhash, ptarget)) { |
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work->valid_nonces++; |
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bn_set_target_ratio(work, vhash, 1); |
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} |
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pdata[19] = max(work->nonces[0], work->nonces[1]) + 1; |
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} else { |
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pdata[19] = work->nonces[0] + 1; |
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} |
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return work->valid_nonces; |
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} |
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else if (vhash[7] > ptarget[7]) { |
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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_sha256d(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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sha256d_free(thr_id); |
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init[thr_id] = false; |
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cudaDeviceSynchronize(); |
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}
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