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96 lines
2.3 KiB
96 lines
2.3 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, int threads); |
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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, int 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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sph_keccak_context ctx_keccak; |
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uint32_t hash[16]; |
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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, uint32_t *pdata, |
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const uint32_t *ptarget, uint32_t max_nonce, |
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unsigned long *hashes_done) |
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{ |
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const uint32_t first_nonce = pdata[19]; |
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uint32_t throughput = opt_work_size ? opt_work_size : (1 << 21); // 256*256*8*4 |
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throughput = min(throughput, (max_nonce - first_nonce)); |
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if (opt_benchmark) |
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((uint32_t*)ptarget)[7] = 0x0005; |
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if (!init[thr_id]) { |
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cudaSetDevice(device_map[thr_id]); |
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CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], 16 * sizeof(uint32_t) * throughput)); |
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keccak256_cpu_init(thr_id, (int) throughput); |
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init[thr_id] = true; |
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} |
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uint32_t endiandata[20]; |
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for (int k=0; k < 20; k++) { |
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be32enc(&endiandata[k], ((uint32_t*)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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uint32_t foundNonce = keccak256_cpu_hash_80(thr_id, (int) throughput, pdata[19], d_hash[thr_id], order++); |
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if (foundNonce != UINT32_MAX) |
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{ |
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uint32_t Htarg = ptarget[7]; |
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uint32_t vhash64[8]; |
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be32enc(&endiandata[19], foundNonce); |
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keccak256_hash(vhash64, endiandata); |
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if (vhash64[7] <= Htarg && fulltest(vhash64, ptarget)) { |
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*hashes_done = foundNonce - first_nonce + 1; |
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pdata[19] = foundNonce; |
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return 1; |
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} |
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else { |
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applog(LOG_DEBUG, "GPU #%d: result for nounce %08x does not validate on CPU!", thr_id, foundNonce); |
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} |
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} |
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if ((uint64_t) pdata[19] + throughput > 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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