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bitcoin.cu
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#include "miner.h"
#include "cuda_helper.h"
static uint32_t *h_nounce[MAX_GPUS];
extern void bitcoin_cpu_init(int thr_id);
extern void bitcoin_cpu_hash(int thr_id, uint32_t threads, uint32_t startNounce, const uint32_t *const ms, uint32_t merkle, uint32_t time, uint32_t compacttarget, uint32_t *const h_nounce);
extern void bitcoin_midstate(const uint32_t *data, uint32_t *midstate);
uint32_t rrot(uint32_t x, unsigned int n)
{
return (x >> n) | (x << (32 - n));
}
void bitcoin_hash(uint32_t *output, const uint32_t *data, uint32_t nonce, const uint32_t *midstate)
{
int i;
uint32_t s0, s1, t1, t2, maj, ch, a, b, c, d, e, f, g, h;
uint32_t w[64];
const uint32_t k[64] = {
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
};
const uint32_t hc[8] = {
0x6a09e667U, 0xbb67ae85U, 0x3c6ef372U, 0xa54ff53aU,
0x510e527fU, 0x9b05688cU, 0x1f83d9abU, 0x5be0cd19U
};
for (i = 0; i <= 15; i++)
{
w[i] = data[i + 16];
}
w[3] = nonce;
for (i = 16; i <= 63; i++)
{
s0 = rrot(w[i - 15], 7) ^ rrot(w[i - 15], 18) ^ (w[i - 15] >> 3);
s1 = rrot(w[i - 2], 17) ^ rrot(w[i - 2], 19) ^ (w[i - 2] >> 10);
w[i] = w[i - 16] + s0 + w[i - 7] + s1;
}
a = midstate[0];
b = midstate[1];
c = midstate[2];
d = midstate[3];
e = midstate[4];
f = midstate[5];
g = midstate[6];
h = midstate[7];
for (i = 0; i <= 63; i++)
{
s0 = rrot(a, 2) ^ rrot(a, 13) ^ rrot(a, 22);
maj = (a & b) ^ (a & c) ^ (b & c);
t2 = s0 + maj;
s1 = rrot(e, 6) ^ rrot(e, 11) ^ rrot(e, 25);
ch = (e & f) ^ ((~e) & g);
t1 = h + s1 + ch + k[i] + w[i];
h = g;
g = f;
f = e;
e = d + t1;
d = c;
c = b;
b = a;
a = t1 + t2;
}
w[0] = a + midstate[0];
w[1] = b + midstate[1];
w[2] = c + midstate[2];
w[3] = d + midstate[3];
w[4] = e + midstate[4];
w[5] = f + midstate[5];
w[6] = g + midstate[6];
w[7] = h + midstate[7];
w[8] = 0x80000000U;
for (i = 9; i <= 14; i++)
w[i] = 0U;
w[15] = 0x100U;
for (i = 16; i <= 63; i++)
{
s0 = rrot(w[i - 15], 7) ^ rrot(w[i - 15], 18) ^ (w[i - 15] >> 3);
s1 = rrot(w[i - 2], 17) ^ rrot(w[i - 2], 19) ^ (w[i - 2] >> 10);
w[i] = w[i - 16] + s0 + w[i - 7] + s1;
}
a = hc[0];
b = hc[1];
c = hc[2];
d = hc[3];
e = hc[4];
f = hc[5];
g = hc[6];
h = hc[7];
for (i = 0; i <= 63; i++)
{
s0 = rrot(a, 2) ^ rrot(a, 13) ^ rrot(a, 22);
maj = (a & b) ^ (a & c) ^ (b & c);
t2 = s0 + maj;
s1 = rrot(e, 6) ^ rrot(e, 11) ^ rrot(e, 25);
ch = (e & f) ^ ((~e) & g);
t1 = h + s1 + ch + k[i] + w[i];
h = g;
g = f;
f = e;
e = d + t1;
d = c;
c = b;
b = a;
a = t1 + t2;
}
be32enc(&output[0], a + hc[0]);
be32enc(&output[1], b + hc[1]);
be32enc(&output[2], c + hc[2]);
be32enc(&output[3], d + hc[3]);
be32enc(&output[4], e + hc[4]);
be32enc(&output[5], f + hc[5]);
be32enc(&output[6], g + hc[6]);
be32enc(&output[7], h + hc[7]);
}
static bool init[MAX_GPUS] = { 0 };
int scanhash_bitcoin(int thr_id, uint32_t *pdata,
const uint32_t *ptarget, uint32_t max_nonce,
unsigned long *hashes_done)
{
const uint32_t first_nonce = pdata[19];
uint32_t throughput = device_intensity(device_map[thr_id], __func__, 1U << 28);
throughput = min(throughput, (max_nonce - first_nonce));
if (opt_benchmark)
((uint32_t*)ptarget)[7] = 0x0005;
if (!init[thr_id])
{
cudaSetDevice(device_map[thr_id]);
cudaSetDeviceFlags(cudaDeviceScheduleBlockingSync);
cudaDeviceSetCacheConfig(cudaFuncCachePreferL1);
bitcoin_cpu_init(thr_id);
CUDA_SAFE_CALL(cudaMallocHost(&h_nounce[thr_id], 2 * sizeof(uint32_t)));
init[thr_id] = true;
}
uint32_t ms[8];
bitcoin_midstate(pdata, ms);
do
{
bitcoin_cpu_hash(thr_id, (int)throughput, pdata[19], ms, pdata[16], pdata[17], pdata[18], h_nounce[thr_id]);
if (h_nounce[thr_id][0] != UINT32_MAX)
{
uint32_t vhash64[8];
bitcoin_hash(vhash64, pdata, h_nounce[thr_id][0], ms);
if (vhash64[7] == 0 && fulltest(vhash64, ptarget))
{
int res = 1;
// check if there was some other ones...
*hashes_done = pdata[19] - first_nonce + throughput;
if (h_nounce[thr_id][1] != 0xffffffff)
{
pdata[21] = h_nounce[thr_id][1];
res++;
if (opt_benchmark)
applog(LOG_INFO, "GPU #%d Found second nounce %08x", thr_id, h_nounce[thr_id][1]);
}
pdata[19] = h_nounce[thr_id][0];
if (opt_benchmark)
applog(LOG_INFO, "GPU #%d Found nounce %08x", thr_id, h_nounce[thr_id][0]);
return res;
}
else
{
if (vhash64[7] > 0)
{
applog(LOG_INFO, "GPU #%d: result for %08x does not validate on CPU!", thr_id, h_nounce[thr_id][0]);
}
}
}
pdata[19] += throughput;
} while (!work_restart[thr_id].restart && ((uint64_t)max_nonce > ((uint64_t)(pdata[19]) + (uint64_t)throughput)));
*hashes_done = pdata[19] - first_nonce;
return 0;
}