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104 lines
2.2 KiB
104 lines
2.2 KiB
10 years ago
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/*
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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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// in cpu-miner.c
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extern int device_map[8];
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static uint32_t *d_hash[8];
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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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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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if (opt_benchmark)
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((uint32_t*)ptarget)[7] = 0x000f;
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const uint32_t Htarg = ptarget[7];
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const int throughput = 256*256*8*8;
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static bool init[8] = {0,0,0,0,0,0,0,0};
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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, 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, throughput, pdata[19], d_hash[thr_id], order++);
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if (foundNonce != 0xffffffff)
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{
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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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pdata[19] = foundNonce;
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*hashes_done = foundNonce - first_nonce + 1;
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return 1;
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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 > (uint64_t) 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 + 1;
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return 0;
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}
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