/*
 * X13 algorithm
 */
extern "C"
{
#include "sph/sph_blake.h"
#include "sph/sph_bmw.h"
#include "sph/sph_groestl.h"
#include "sph/sph_skein.h"
#include "sph/sph_jh.h"
#include "sph/sph_keccak.h"

#include "sph/sph_luffa.h"
#include "sph/sph_cubehash.h"
#include "sph/sph_shavite.h"
#include "sph/sph_simd.h"
#include "sph/sph_echo.h"

#include "sph/sph_hamsi.h"
#include "sph/sph_fugue.h"
}
#include "miner.h"

#include "cuda_helper.h"
#include "x11/cuda_x11.h"

static uint32_t *d_hash[MAX_GPUS];

extern void x13_hamsi512_cpu_init(int thr_id, uint32_t threads);
extern void x13_hamsi512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);

extern void x13_fugue512_cpu_init(int thr_id, uint32_t threads);
extern void x13_fugue512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);
extern void x13_fugue512_cpu_free(int thr_id);

// X13 CPU Hash
extern "C" void x13hash(void *output, const void *input)
{
	// blake1-bmw2-grs3-skein4-jh5-keccak6-luffa7-cubehash8-shavite9-simd10-echo11-hamsi12-fugue13

	sph_blake512_context ctx_blake;
	sph_bmw512_context ctx_bmw;
	sph_groestl512_context ctx_groestl;
	sph_jh512_context ctx_jh;
	sph_keccak512_context ctx_keccak;
	sph_skein512_context ctx_skein;
	sph_luffa512_context ctx_luffa;
	sph_cubehash512_context ctx_cubehash;
	sph_shavite512_context ctx_shavite;
	sph_simd512_context ctx_simd;
	sph_echo512_context ctx_echo;
	sph_hamsi512_context ctx_hamsi;
	sph_fugue512_context ctx_fugue;

	uint32_t hash[32];
	memset(hash, 0, sizeof hash);

	sph_blake512_init(&ctx_blake);
	sph_blake512 (&ctx_blake, input, 80);
	sph_blake512_close(&ctx_blake, (void*) hash);

	sph_bmw512_init(&ctx_bmw);
	sph_bmw512 (&ctx_bmw, (const void*) hash, 64);
	sph_bmw512_close(&ctx_bmw, (void*) hash);

	sph_groestl512_init(&ctx_groestl);
	sph_groestl512 (&ctx_groestl, (const void*) hash, 64);
	sph_groestl512_close(&ctx_groestl, (void*) hash);

	sph_skein512_init(&ctx_skein);
	sph_skein512 (&ctx_skein, (const void*) hash, 64);
	sph_skein512_close(&ctx_skein, (void*) hash);

	sph_jh512_init(&ctx_jh);
	sph_jh512 (&ctx_jh, (const void*) hash, 64);
	sph_jh512_close(&ctx_jh, (void*) hash);

	sph_keccak512_init(&ctx_keccak);
	sph_keccak512 (&ctx_keccak, (const void*) hash, 64);
	sph_keccak512_close(&ctx_keccak, (void*) hash);

	sph_luffa512_init(&ctx_luffa);
	sph_luffa512 (&ctx_luffa, (const void*) hash, 64);
	sph_luffa512_close (&ctx_luffa, (void*) hash);

	sph_cubehash512_init(&ctx_cubehash);
	sph_cubehash512 (&ctx_cubehash, (const void*) hash, 64);
	sph_cubehash512_close(&ctx_cubehash, (void*) hash);

	sph_shavite512_init(&ctx_shavite);
	sph_shavite512 (&ctx_shavite, (const void*) hash, 64);
	sph_shavite512_close(&ctx_shavite, (void*) hash);

	sph_simd512_init(&ctx_simd);
	sph_simd512 (&ctx_simd, (const void*) hash, 64);
	sph_simd512_close(&ctx_simd, (void*) hash);

	sph_echo512_init(&ctx_echo);
	sph_echo512 (&ctx_echo, (const void*) hash, 64);
	sph_echo512_close(&ctx_echo, (void*) hash);

	sph_hamsi512_init(&ctx_hamsi);
	sph_hamsi512 (&ctx_hamsi, (const void*) hash, 64);
	sph_hamsi512_close(&ctx_hamsi, (void*) hash);

	sph_fugue512_init(&ctx_fugue);
	sph_fugue512 (&ctx_fugue, (const void*) hash, 64);
	sph_fugue512_close(&ctx_fugue, (void*) hash);

	memcpy(output, hash, 32);
}

static bool init[MAX_GPUS] = { 0 };

extern "C" int scanhash_x13(int thr_id, struct work* work, uint32_t max_nonce, unsigned long *hashes_done)
{
	uint32_t *pdata = work->data;
	uint32_t *ptarget = work->target;
	const uint32_t first_nonce = pdata[19];
	int intensity = 19; // (device_sm[device_map[thr_id]] > 500 && !is_windows()) ? 20 : 19;
	uint32_t throughput =  cuda_default_throughput(thr_id, 1 << intensity); // 19=256*256*8;
	//if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce);

	if (opt_benchmark)
		((uint32_t*)ptarget)[7] = 0x000f;

	if (!init[thr_id])
	{
		cudaSetDevice(device_map[thr_id]);
		if (opt_cudaschedule == -1 && gpu_threads == 1) {
			cudaDeviceReset();
			// reduce cpu usage
			cudaSetDeviceFlags(cudaDeviceScheduleBlockingSync);
			CUDA_LOG_ERROR();
		}
		gpulog(LOG_INFO, thr_id, "Intensity set to %g, %u cuda threads", throughput2intensity(throughput), throughput);

		quark_blake512_cpu_init(thr_id, throughput);
		quark_groestl512_cpu_init(thr_id, throughput);
		quark_skein512_cpu_init(thr_id, throughput);
		quark_bmw512_cpu_init(thr_id, throughput);
		quark_keccak512_cpu_init(thr_id, throughput);
		quark_jh512_cpu_init(thr_id, throughput);
		x11_luffaCubehash512_cpu_init(thr_id, throughput);
		x11_shavite512_cpu_init(thr_id, throughput);
		if (x11_simd512_cpu_init(thr_id, throughput) != 0) {
			return 0;
		}
		x11_echo512_cpu_init(thr_id, throughput);
		x13_hamsi512_cpu_init(thr_id, throughput);
		x13_fugue512_cpu_init(thr_id, throughput);

		CUDA_CALL_OR_RET_X(cudaMalloc(&d_hash[thr_id], 16 * sizeof(uint32_t) * throughput), 0);

		cuda_check_cpu_init(thr_id, throughput);

		init[thr_id] = true;
	}

	uint32_t endiandata[20];
	for (int k=0; k < 20; k++)
		be32enc(&endiandata[k], pdata[k]);

	quark_blake512_cpu_setBlock_80(thr_id, endiandata);
	cuda_check_cpu_setTarget(ptarget);

	do {
		uint32_t foundNonce;
		int order = 0;

		quark_blake512_cpu_hash_80(thr_id, throughput, pdata[19], d_hash[thr_id]); order++;
		quark_bmw512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
		quark_groestl512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
		quark_skein512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
		quark_jh512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
		quark_keccak512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
		x11_luffaCubehash512_cpu_hash_64(thr_id, throughput, d_hash[thr_id], order++);
		x11_shavite512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
		x11_simd512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
		x11_echo512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
		x13_hamsi512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
		x13_fugue512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);

		*hashes_done = pdata[19] - first_nonce + throughput;

		CUDA_LOG_ERROR();

		foundNonce = cuda_check_hash(thr_id, throughput, pdata[19], d_hash[thr_id]);
		if (foundNonce != UINT32_MAX)
		{
			uint32_t vhash[8];
			be32enc(&endiandata[19], foundNonce);
			x13hash(vhash, endiandata);

			if (vhash[7] <= ptarget[7] && fulltest(vhash, ptarget)) {
				int res = 1;
				uint32_t secNonce = cuda_check_hash_suppl(thr_id, throughput, pdata[19], d_hash[thr_id], 1);
				work_set_target_ratio(work, vhash);
				pdata[19] = foundNonce;
				if (secNonce != 0) {
					be32enc(&endiandata[19], secNonce);
					x13hash(vhash, endiandata);
					pdata[21] = secNonce;
					if (bn_hash_target_ratio(vhash, ptarget) > work->shareratio) {
						work_set_target_ratio(work, vhash);
						xchg(pdata[19], pdata[21]);
					}
					res++;
				}
				return res;
			} else {
				gpulog(LOG_WARNING, thr_id, "result for %08x does not validate on CPU!", 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;

	CUDA_LOG_ERROR();

	return 0;
}

// cleanup
extern "C" void free_x13(int thr_id)
{
	if (!init[thr_id])
		return;

	cudaThreadSynchronize();

	cudaFree(d_hash[thr_id]);

	quark_blake512_cpu_free(thr_id);
	quark_groestl512_cpu_free(thr_id);
	x11_simd512_cpu_free(thr_id);
	x13_fugue512_cpu_free(thr_id);

	cuda_check_cpu_free(thr_id);
	CUDA_LOG_ERROR();

	cudaDeviceSynchronize();
	init[thr_id] = false;
}