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98 lines
2.6 KiB
98 lines
2.6 KiB
#include <cuda_runtime.h> |
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#include "miner.h" |
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#include "neoscrypt/neoscrypt.h" |
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extern void neoscrypt_setBlockTarget(uint32_t * data, const void *ptarget); |
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extern void neoscrypt_cpu_init(int thr_id, uint32_t threads); |
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extern void neoscrypt_cpu_free(int thr_id); |
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extern uint32_t neoscrypt_cpu_hash_k4(int thr_id, uint32_t threads, uint32_t startNounce, int have_stratum, int order); |
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static bool init[MAX_GPUS] = { 0 }; |
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int scanhash_neoscrypt(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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int intensity = is_windows() ? 18 : 19; |
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uint32_t throughput = device_intensity(thr_id, __func__, 1U << intensity); |
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throughput = throughput / 32; /* set for max intensity ~= 20 */ |
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throughput = min(throughput, max_nonce - first_nonce + 1); |
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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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{ |
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int dev_id = device_map[thr_id]; |
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cudaSetDevice(dev_id); |
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cudaDeviceSetCacheConfig(cudaFuncCachePreferL1); |
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if (device_sm[dev_id] <= 300) { |
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applog(LOG_ERR, "Sorry neoscrypt is not supported on SM 3.0 devices"); |
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proper_exit(EXIT_CODE_CUDA_ERROR); |
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} |
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applog(LOG_INFO, "Using %d cuda threads", throughput); |
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neoscrypt_cpu_init(thr_id, throughput); |
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init[thr_id] = true; |
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} |
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if (have_stratum) { |
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for (int k = 0; k < 20; k++) |
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be32enc(&endiandata[k], pdata[k]); |
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} else { |
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for (int k = 0; k < 20; k++) |
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endiandata[k] = pdata[k]; |
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} |
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neoscrypt_setBlockTarget(endiandata,ptarget); |
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do { |
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uint32_t foundNonce = neoscrypt_cpu_hash_k4(thr_id, throughput, pdata[19], have_stratum, 0); |
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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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*hashes_done = pdata[19] - first_nonce + 1; |
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if (have_stratum) { |
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be32enc(&endiandata[19], foundNonce); |
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} else { |
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endiandata[19] = foundNonce; |
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} |
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neoscrypt((uchar*)vhash64, (uchar*) endiandata, 0x80000620U); |
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if (vhash64[7] <= ptarget[7] && fulltest(vhash64, ptarget)) { |
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bn_store_hash_target_ratio(vhash64, ptarget, work); |
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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 nonce %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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} while (!work_restart[thr_id].restart && (max_nonce > ((uint64_t)(pdata[19]) + throughput))); |
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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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// cleanup |
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void free_neoscrypt(int thr_id) |
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{ |
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if (!init[thr_id]) |
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return; |
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cudaSetDevice(device_map[thr_id]); |
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neoscrypt_cpu_free(thr_id); |
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init[thr_id] = false; |
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cudaDeviceSynchronize(); |
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} |