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98 lines
2.5 KiB
98 lines
2.5 KiB
9 years ago
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/*
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* whirlpool routine (djm)
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* whirlpoolx routine (provos alexis, tpruvot)
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*/
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extern "C" {
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#include "sph/sph_whirlpool.h"
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}
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#include "miner.h"
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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 whirlpoolx_cpu_init(int thr_id, uint32_t threads);
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extern void whirlpoolx_setBlock_80(void *pdata, const void *ptarget);
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extern uint32_t whirlpoolx_cpu_hash(int thr_id, uint32_t threads, uint32_t startNounce);
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extern void whirlpoolx_precompute(int thr_id);
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// CPU Hash function
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extern "C" void whirlxHash(void *state, const void *input)
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{
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sph_whirlpool_context ctx_whirlpool;
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unsigned char hash[64];
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unsigned char hash_xored[32];
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sph_whirlpool_init(&ctx_whirlpool);
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sph_whirlpool(&ctx_whirlpool, input, 80);
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sph_whirlpool_close(&ctx_whirlpool, hash);
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// compress the 48 first bytes of the hash to 32
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for (int i = 0; i < 32; i++) {
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hash_xored[i] = hash[i] ^ hash[i + 16];
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}
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memcpy(state, hash_xored, 32);
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}
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static bool init[MAX_GPUS] = { 0 };
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extern "C" int scanhash_whirlpoolx(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
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uint32_t max_nonce, 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 endiandata[20];
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int intensity = is_windows() ? 20 : 22;
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uint32_t throughput = device_intensity(thr_id, __func__, 1U << intensity);
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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] = 0x0000ff;
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if (!init[thr_id]) {
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cudaSetDevice(device_map[thr_id]);
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CUDA_CALL_OR_RET_X(cudaMalloc(&d_hash[thr_id], 64 * throughput), 0);
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whirlpoolx_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 < 20; k++) {
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be32enc(&endiandata[k], pdata[k]);
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}
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whirlpoolx_setBlock_80((void*)endiandata, ptarget);
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whirlpoolx_precompute(thr_id);
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do {
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uint32_t foundNonce = whirlpoolx_cpu_hash(thr_id, throughput, pdata[19]);
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if (foundNonce != UINT32_MAX)
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{
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const 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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whirlxHash(vhash64, endiandata);
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if (vhash64[7] <= Htarg && fulltest(vhash64, ptarget)) {
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*hashes_done = pdata[19] - first_nonce + throughput;
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pdata[19] = foundNonce;
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return 1;
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} else {
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applog(LOG_WARNING, "GPU #%d: result for %08x does not validate on CPU!", device_map[thr_id], foundNonce);
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}
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}
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pdata[19] += throughput;
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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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} 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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