You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
122 lines
3.0 KiB
122 lines
3.0 KiB
/** |
|
* bmw-256 MDT |
|
* tpruvot - 2015 |
|
*/ |
|
extern "C" { |
|
#include "sph/sph_bmw.h" |
|
} |
|
|
|
#include "miner.h" |
|
|
|
#include "cuda_helper.h" |
|
|
|
static uint32_t *d_hash[MAX_GPUS]; |
|
|
|
extern void bmw256_midstate_init(int thr_id, uint32_t threads); |
|
extern void bmw256_midstate_free(int thr_id); |
|
extern void bmw256_setBlock_80(int thr_id, void *pdata); |
|
extern void bmw256_cpu_hash_80(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_outputHash, int swap); |
|
|
|
extern uint32_t cuda_check_hash_32(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_inputHash); |
|
|
|
// CPU Hash |
|
extern "C" void bmw_hash(void *state, const void *input) |
|
{ |
|
uint32_t _ALIGN(64) hash[16]; |
|
sph_bmw256_context ctx; |
|
|
|
sph_bmw256_init(&ctx); |
|
sph_bmw256(&ctx, input, 80); |
|
sph_bmw256_close(&ctx, (void*) hash); |
|
|
|
memcpy(state, hash, 32); |
|
} |
|
|
|
static bool init[MAX_GPUS] = { 0 }; |
|
|
|
static __inline uint32_t swab32_if(uint32_t val, bool iftrue) { |
|
return iftrue ? swab32(val) : val; |
|
} |
|
|
|
extern "C" int scanhash_bmw(int thr_id, struct work* work, uint32_t max_nonce, unsigned long *hashes_done) |
|
{ |
|
uint32_t _ALIGN(64) endiandata[20]; |
|
uint32_t *pdata = work->data; |
|
uint32_t *ptarget = work->target; |
|
const uint32_t first_nonce = pdata[19]; |
|
bool swapnonce = true; |
|
uint32_t throughput = cuda_default_throughput(thr_id, 1U << 21); |
|
if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce); |
|
|
|
if (opt_benchmark) |
|
ptarget[7] = 0x0005; |
|
|
|
if (!init[thr_id]) { |
|
cudaSetDevice(device_map[thr_id]); |
|
|
|
cuda_check_cpu_init(thr_id, throughput); |
|
bmw256_midstate_init(thr_id, throughput); |
|
|
|
CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], (size_t)32 * throughput)); |
|
|
|
init[thr_id] = true; |
|
} |
|
|
|
for (int k=0; k < 20; k++) { |
|
be32enc(&endiandata[k], ((uint32_t*)pdata)[k]); |
|
} |
|
|
|
cudaGetLastError(); |
|
bmw256_setBlock_80(thr_id, (void*)endiandata); |
|
|
|
cuda_check_cpu_setTarget(ptarget); |
|
|
|
do { |
|
bmw256_cpu_hash_80(thr_id, (int) throughput, pdata[19], d_hash[thr_id], (int) swapnonce); |
|
uint32_t foundNonce = cuda_check_hash_32(thr_id, throughput, pdata[19], d_hash[thr_id]); |
|
if (foundNonce != UINT32_MAX) |
|
{ |
|
uint32_t _ALIGN(64) vhash64[8]; |
|
endiandata[19] = swab32_if(foundNonce, swapnonce); |
|
bmw_hash(vhash64, endiandata); |
|
|
|
if (vhash64[7] <= ptarget[7] && fulltest(vhash64, ptarget)) { |
|
*hashes_done = foundNonce - first_nonce + 1; |
|
pdata[19] = swab32_if(foundNonce,!swapnonce); |
|
work_set_target_ratio(work, vhash64); |
|
return 1; |
|
} |
|
else { |
|
applog(LOG_DEBUG, "GPU #%d: result for nounce %08x does not validate on CPU!", thr_id, foundNonce); |
|
} |
|
} |
|
|
|
if ((uint64_t) throughput + pdata[19] > max_nonce) { |
|
pdata[19] = max_nonce; |
|
break; |
|
} |
|
|
|
pdata[19] += throughput; |
|
|
|
} while (!work_restart[thr_id].restart); |
|
|
|
*hashes_done = pdata[19] - first_nonce; |
|
return 0; |
|
} |
|
|
|
// cleanup |
|
extern "C" void free_bmw(int thr_id) |
|
{ |
|
if (!init[thr_id]) |
|
return; |
|
|
|
cudaSetDevice(device_map[thr_id]); |
|
|
|
cudaFree(d_hash[thr_id]); |
|
bmw256_midstate_free(thr_id); |
|
cuda_check_cpu_free(thr_id); |
|
|
|
init[thr_id] = false; |
|
|
|
cudaDeviceSynchronize(); |
|
} |