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103 lines
2.7 KiB
103 lines
2.7 KiB
/** |
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* bmw-256 MDT |
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* tpruvot - 2015 |
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*/ |
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extern "C" { |
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#include "sph/sph_bmw.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 bmw256_midstate_init(int thr_id, uint32_t threads); |
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extern void bmw256_setBlock_80(int thr_id, void *pdata); |
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extern void bmw256_cpu_hash_80(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_outputHash, int swap); |
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extern uint32_t cuda_check_hash_32(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_inputHash); |
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// CPU Hash |
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extern "C" void bmw_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_bmw256_context ctx; |
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sph_bmw256_init(&ctx); |
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sph_bmw256(&ctx, input, 80); |
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sph_bmw256_close(&ctx, (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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static __inline uint32_t swab32_if(uint32_t val, bool iftrue) { |
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return iftrue ? swab32(val) : val; |
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} |
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extern "C" int scanhash_bmw(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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bool swapnonce = true; |
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uint32_t throughput = device_intensity(thr_id, __func__, 1U << 21); |
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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_check_cpu_init(thr_id, throughput); |
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bmw256_midstate_init(thr_id, throughput); |
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CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], (size_t)32 * 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], ((uint32_t*)pdata)[k]); |
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} |
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bmw256_setBlock_80(thr_id, (void*)endiandata); |
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cuda_check_cpu_setTarget(ptarget); |
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do { |
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bmw256_cpu_hash_80(thr_id, (int) throughput, pdata[19], d_hash[thr_id], (int) swapnonce); |
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uint32_t foundNonce = cuda_check_hash_32(thr_id, throughput, pdata[19], d_hash[thr_id]); |
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if (foundNonce != UINT32_MAX) |
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{ |
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uint32_t _ALIGN(64) vhash64[8]; |
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endiandata[19] = swab32_if(foundNonce, swapnonce); |
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bmw_hash(vhash64, endiandata); |
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if (vhash64[7] <= ptarget[7] && fulltest(vhash64, ptarget)) { |
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*hashes_done = foundNonce - first_nonce + 1; |
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pdata[19] = swab32_if(foundNonce,!swapnonce); |
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bn_store_hash_target_ratio(vhash64, ptarget, work); |
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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) 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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