static void *postcalc_hash(void *userdata)
{
struct pc_data *pcd = (struct pc_data *)userdata;
struct thr_info *thr = pcd->thr;
unsigned int entry = 0;
int found = FOUND;
pthread_detach(pthread_self());
/* To prevent corrupt values in FOUND from trying to read beyond the
* end of the res[] array */
if (unlikely(pcd->res[found] & ~found)) {
applog(LOG_WARNING, "%s%d: invalid nonce count - HW error",
thr->cgpu->drv->name, thr->cgpu->device_id);
hw_errors++;
thr->cgpu->hw_errors++;
pcd->res[found] &= found;
}
for (entry = 0; entry < pcd->res[found]; entry++) {
uint32_t nonce = pcd->res[entry];
applog(LOG_DEBUG, "OCL NONCE %u found in slot %d", nonce, entry);
submit_nonce(thr, pcd->work, nonce);
}
discard_work(pcd->work);
free(pcd);
return NULL;
}
static int64_t gridseed_scanhash(struct thr_info *thr, struct work *work, int64_t __maybe_unused max_nonce)
{
struct cgpu_info *gridseed = thr->cgpu;
GRIDSEED_INFO *info = gridseed->device_data;
unsigned char buf[GRIDSEED_READ_SIZE];
int ret = 0;
struct timeval old_scanhash_time = info->scanhash_time;
int elapsed_ms;
while (!thr->work_restart && (ret = gc3355_get_data(gridseed, buf, GRIDSEED_READ_SIZE)) == 0) {
if (buf[0] == 0x55 || buf[1] == 0x20) {
uint32_t nonce = le32toh(*(uint32_t *)(buf+4));
uint32_t chip = nonce / ((uint32_t)0xffffffff / info->chips);
info->nonce_count[chip]++;
if (!submit_nonce(thr, work, nonce))
info->error_count[chip]++;
} else {
applog(LOG_ERR, "Unrecognized response from %i", gridseed->device_id);
return -1;
}
}
if (ret != 0 && ret != LIBUSB_ERROR_TIMEOUT) {
applog(LOG_ERR, "No response from %i", gridseed->device_id);
return -1;
}
cgtime(&info->scanhash_time);
elapsed_ms = ms_tdiff(&info->scanhash_time, &old_scanhash_time);
return GRIDSEED_HASH_SPEED * (double)elapsed_ms * (double)(info->freq * info->chips);
}
int submit_work(struct bitfury_work *w, struct thr_info *thr)
{
int i=0,j;
int *res = w->results;
for (j = w->results_sent; j < w->results_n;j++) {
submit_nonce(thr, w->work, bswap_32(res[j]));
w->results_sent++;
i++;
}
return i;
}
static int64_t cpu_scanhash(struct thr_info *thr, struct work *work, int64_t max_nonce)
{
uint32_t first_nonce = work->blk.nonce;
uint32_t last_nonce;
bool rc;
CPUSearch:
last_nonce = first_nonce;
rc = false;
/* scan nonces for a proof-of-work hash */
{
sha256_func func = scanhash_generic;
switch (work_mining_algorithm(work)->algo)
{
#ifdef USE_SCRYPT
case POW_SCRYPT:
func = scanhash_scrypt;
break;
#endif
#ifdef USE_SHA256D
case POW_SHA256D:
if (work->nonce_diff >= 1.)
func = sha256_funcs[opt_algo];
break;
#endif
default:
break;
}
if (unlikely(!func))
applogr(0, LOG_ERR, "%"PRIpreprv": Unknown mining algorithm", thr->cgpu->proc_repr);
rc = (*func)(
thr,
work,
max_nonce,
&last_nonce,
work->blk.nonce
);
}
/* if nonce found, submit work */
if (unlikely(rc)) {
applog(LOG_DEBUG, "%"PRIpreprv" found something?", thr->cgpu->proc_repr);
submit_nonce(thr, work, le32toh(*(uint32_t*)&work->data[76]));
work->blk.nonce = last_nonce + 1;
goto CPUSearch;
}
else
if (unlikely(last_nonce == first_nonce))
return 0;
work->blk.nonce = last_nonce + 1;
return last_nonce - first_nonce + 1;
}
static int64_t cpu_scanhash(struct thr_info *thr, struct work *work, int64_t max_nonce)
{
unsigned char hash1[64];
uint32_t first_nonce = work->blk.nonce;
uint32_t last_nonce;
bool rc;
memcpy(&hash1[0], &hash1_init[0], sizeof(hash1));
CPUSearch:
last_nonce = first_nonce;
rc = false;
/* scan nonces for a proof-of-work hash */
{
sha256_func func = sha256_funcs[opt_algo];
rc = (*func)(
thr,
work->midstate,
work->data,
hash1,
work->hash,
work->target,
max_nonce,
&last_nonce,
work->blk.nonce
);
}
/* if nonce found, submit work */
if (unlikely(rc)) {
applog(LOG_DEBUG, "%"PRIpreprv" found something?", thr->cgpu->proc_repr);
submit_nonce(thr, work, le32toh(*(uint32_t*)&work->data[76]));
work->blk.nonce = last_nonce + 1;
goto CPUSearch;
}
else
if (unlikely(last_nonce == first_nonce))
return 0;
work->blk.nonce = last_nonce + 1;
return last_nonce - first_nonce + 1;
}
static int64_t bitforce_get_result(struct thr_info *thr, struct work *work)
{
struct cgpu_info *bitforce = thr->cgpu;
int fdDev = bitforce->device_fd;
unsigned int delay_time_ms;
struct timeval elapsed;
struct timeval now;
char pdevbuf[0x100];
char *pnoncebuf;
uint32_t nonce;
if (!fdDev)
return -1;
while (1) {
if (unlikely(thr->work_restart))
return 0;
mutex_lock(&bitforce->device_mutex);
BFwrite(fdDev, "ZFX", 3);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
mutex_unlock(&bitforce->device_mutex);
gettimeofday(&now, NULL);
timersub(&now, &bitforce->work_start_tv, &elapsed);
if (elapsed.tv_sec >= BITFORCE_LONG_TIMEOUT_S) {
applog(LOG_ERR, "BFL%i: took %dms - longer than %dms", bitforce->device_id,
tv_to_ms(elapsed), BITFORCE_LONG_TIMEOUT_MS);
return 0;
}
if (pdevbuf[0] && strncasecmp(pdevbuf, "B", 1)) /* BFL does not respond during throttling */
break;
/* if BFL is throttling, no point checking so quickly */
delay_time_ms = (pdevbuf[0] ? BITFORCE_CHECK_INTERVAL_MS : 2 * WORK_CHECK_INTERVAL_MS);
nmsleep(delay_time_ms);
bitforce->wait_ms += delay_time_ms;
}
if (elapsed.tv_sec > BITFORCE_TIMEOUT_S) {
applog(LOG_ERR, "BFL%i: took %dms - longer than %dms", bitforce->device_id,
tv_to_ms(elapsed), BITFORCE_TIMEOUT_MS);
bitforce->device_last_not_well = time(NULL);
bitforce->device_not_well_reason = REASON_DEV_OVER_HEAT;
bitforce->dev_over_heat_count++;
if (!pdevbuf[0]) /* Only return if we got nothing after timeout - there still may be results */
return 0;
} else if (!strncasecmp(pdevbuf, "N", 1)) {/* Hashing complete (NONCE-FOUND or NO-NONCE) */
/* Simple timing adjustment. Allow a few polls to cope with
* OS timer delays being variably reliable. wait_ms will
* always equal sleep_ms when we've waited greater than or
* equal to the result return time.*/
delay_time_ms = bitforce->sleep_ms;
if (bitforce->wait_ms > bitforce->sleep_ms + (WORK_CHECK_INTERVAL_MS * 2))
bitforce->sleep_ms += (bitforce->wait_ms - bitforce->sleep_ms) / 2;
else if (bitforce->wait_ms == bitforce->sleep_ms) {
if (bitforce->sleep_ms > WORK_CHECK_INTERVAL_MS)
bitforce->sleep_ms -= WORK_CHECK_INTERVAL_MS;
else if (bitforce->sleep_ms > BITFORCE_CHECK_INTERVAL_MS)
bitforce->sleep_ms -= BITFORCE_CHECK_INTERVAL_MS;
}
if (delay_time_ms != bitforce->sleep_ms)
applog(LOG_DEBUG, "BFL%i: Wait time changed to: %d, waited %u", bitforce->device_id, bitforce->sleep_ms, bitforce->wait_ms);
/* Work out the average time taken. Float for calculation, uint for display */
bitforce->avg_wait_f += (tv_to_ms(elapsed) - bitforce->avg_wait_f) / TIME_AVG_CONSTANT;
bitforce->avg_wait_d = (unsigned int) (bitforce->avg_wait_f + 0.5);
}
applog(LOG_DEBUG, "BFL%i: waited %dms until %s", bitforce->device_id, bitforce->wait_ms, pdevbuf);
if (!strncasecmp(&pdevbuf[2], "-", 1))
return bitforce->nonces; /* No valid nonce found */
else if (!strncasecmp(pdevbuf, "I", 1))
return 0; /* Device idle */
else if (strncasecmp(pdevbuf, "NONCE-FOUND", 11)) {
bitforce->hw_errors++;
applog(LOG_WARNING, "BFL%i: Error: Get result reports: %s", bitforce->device_id, pdevbuf);
bitforce_clear_buffer(bitforce);
return 0;
}
pnoncebuf = &pdevbuf[12];
while (1) {
hex2bin((void*)&nonce, pnoncebuf, 4);
#ifndef __BIG_ENDIAN__
nonce = swab32(nonce);
#endif
if (unlikely(bitforce->nonce_range && (nonce >= work->blk.nonce ||
(work->blk.nonce > 0 && nonce < work->blk.nonce - bitforce->nonces - 1)))) {
applog(LOG_WARNING, "BFL%i: Disabling broken nonce range support", bitforce->device_id);
bitforce->nonce_range = false;
work->blk.nonce = 0xffffffff;
bitforce->sleep_ms *= 5;
bitforce->kname = KNAME_WORK;
}
submit_nonce(thr, work, nonce);
if (strncmp(&pnoncebuf[8], ",", 1))
break;
pnoncebuf += 9;
}
return bitforce->nonces;
}
static bool ztex_checkNonce(struct libztex_device *ztex,
struct work *work,
struct libztex_hash_data *hdata)
{
uint32_t *data32 = (uint32_t *)(work->data);
unsigned char swap[80];
uint32_t *swap32 = (uint32_t *)swap;
unsigned char hash1[32];
unsigned char hash2[32];
uint32_t *hash2_32 = (uint32_t *)hash2;
int i;
#if defined(__BIGENDIAN__) || defined(MIPSEB)
hdata->nonce = swab32(hdata->nonce);
hdata->hash7 = swab32(hdata->hash7);
#endif
work->data[64 + 12 + 0] = (hdata->nonce >> 0) & 0xff;
work->data[64 + 12 + 1] = (hdata->nonce >> 8) & 0xff;
work->data[64 + 12 + 2] = (hdata->nonce >> 16) & 0xff;
work->data[64 + 12 + 3] = (hdata->nonce >> 24) & 0xff;
for (i = 0; i < 80 / 4; i++)
swap32[i] = swab32(data32[i]);
sha2(swap, 80, hash1, false);
sha2(hash1, 32, hash2, false);
#if defined(__BIGENDIAN__) || defined(MIPSEB)
if (hash2_32[7] != ((hdata->hash7 + 0x5be0cd19) & 0xFFFFFFFF)) {
#else
if (swab32(hash2_32[7]) != ((hdata->hash7 + 0x5be0cd19) & 0xFFFFFFFF)) {
#endif
ztex->errorCount[ztex->freqM] += 1.0 / ztex->numNonces;
applog(LOG_DEBUG, "%s: checkNonce failed for %0.8X", ztex->repr, hdata->nonce);
return false;
}
return true;
}
static int64_t ztex_scanhash(struct thr_info *thr, struct work *work,
__maybe_unused int64_t max_nonce)
{
struct libztex_device *ztex;
unsigned char sendbuf[44];
int i, j, k;
uint32_t *backlog;
int backlog_p = 0, backlog_max;
uint32_t *lastnonce;
uint32_t nonce, noncecnt = 0;
bool overflow, found;
struct libztex_hash_data hdata[GOLDEN_BACKLOG];
if (thr->cgpu->deven == DEV_DISABLED)
return -1;
ztex = thr->cgpu->device_ztex;
memcpy(sendbuf, work->data + 64, 12);
memcpy(sendbuf + 12, work->midstate, 32);
ztex_selectFpga(ztex);
i = libztex_sendHashData(ztex, sendbuf);
if (i < 0) {
// Something wrong happened in send
applog(LOG_ERR, "%s: Failed to send hash data with err %d, retrying", ztex->repr, i);
nmsleep(500);
i = libztex_sendHashData(ztex, sendbuf);
if (i < 0) {
// And there's nothing we can do about it
ztex_disable(thr);
applog(LOG_ERR, "%s: Failed to send hash data with err %d, giving up", ztex->repr, i);
ztex_releaseFpga(ztex);
return -1;
}
}
ztex_releaseFpga(ztex);
applog(LOG_DEBUG, "%s: sent hashdata", ztex->repr);
lastnonce = calloc(1, sizeof(uint32_t)*ztex->numNonces);
if (lastnonce == NULL) {
applog(LOG_ERR, "%s: failed to allocate lastnonce[%d]", ztex->repr, ztex->numNonces);
return -1;
}
/* Add an extra slot for detecting dupes that lie around */
backlog_max = ztex->numNonces * (2 + ztex->extraSolutions);
backlog = calloc(1, sizeof(uint32_t) * backlog_max);
if (backlog == NULL) {
applog(LOG_ERR, "%s: failed to allocate backlog[%d]", ztex->repr, backlog_max);
return -1;
}
overflow = false;
applog(LOG_DEBUG, "%s: entering poll loop", ztex->repr);
while (!(overflow || thr->work_restart)) {
nmsleep(250);
if (thr->work_restart) {
applog(LOG_DEBUG, "%s: New work detected", ztex->repr);
break;
}
ztex_selectFpga(ztex);
i = libztex_readHashData(ztex, &hdata[0]);
if (i < 0) {
// Something wrong happened in read
applog(LOG_ERR, "%s: Failed to read hash data with err %d, retrying", ztex->repr, i);
nmsleep(500);
i = libztex_readHashData(ztex, &hdata[0]);
if (i < 0) {
// And there's nothing we can do about it
ztex_disable(thr);
applog(LOG_ERR, "%s: Failed to read hash data with err %d, giving up", ztex->repr, i);
free(lastnonce);
free(backlog);
ztex_releaseFpga(ztex);
return -1;
}
}
ztex_releaseFpga(ztex);
if (thr->work_restart) {
applog(LOG_DEBUG, "%s: New work detected", ztex->repr);
break;
}
ztex->errorCount[ztex->freqM] *= 0.995;
ztex->errorWeight[ztex->freqM] = ztex->errorWeight[ztex->freqM] * 0.995 + 1.0;
for (i = 0; i < ztex->numNonces; i++) {
nonce = hdata[i].nonce;
#if defined(__BIGENDIAN__) || defined(MIPSEB)
nonce = swab32(nonce);
#endif
if (nonce > noncecnt)
noncecnt = nonce;
if (((0xffffffff - nonce) < (nonce - lastnonce[i])) || nonce < lastnonce[i]) {
applog(LOG_DEBUG, "%s: overflow nonce=%0.8x lastnonce=%0.8x", ztex->repr, nonce, lastnonce[i]);
overflow = true;
} else
lastnonce[i] = nonce;
#if !(defined(__BIGENDIAN__) || defined(MIPSEB))
nonce = swab32(nonce);
#endif
if (!ztex_checkNonce(ztex, work, &hdata[i])) {
thr->cgpu->hw_errors++;
continue;
}
for (j=0; j<=ztex->extraSolutions; j++) {
nonce = hdata[i].goldenNonce[j];
if (nonce > 0) {
found = false;
for (k = 0; k < backlog_max; k++) {
if (backlog[k] == nonce) {
found = true;
break;
}
}
if (!found) {
applog(LOG_DEBUG, "%s: Share found N%dE%d", ztex->repr, i, j);
backlog[backlog_p++] = nonce;
if (backlog_p >= backlog_max)
backlog_p = 0;
#if defined(__BIGENDIAN__) || defined(MIPSEB)
nonce = swab32(nonce);
#endif
work->blk.nonce = 0xffffffff;
submit_nonce(thr, work, nonce);
applog(LOG_DEBUG, "%s: submitted %0.8x", ztex->repr, nonce);
}
}
}
}
}
ztex->errorRate[ztex->freqM] = ztex->errorCount[ztex->freqM] / ztex->errorWeight[ztex->freqM] * (ztex->errorWeight[ztex->freqM] < 100? ztex->errorWeight[ztex->freqM] * 0.01: 1.0);
if (ztex->errorRate[ztex->freqM] > ztex->maxErrorRate[ztex->freqM])
ztex->maxErrorRate[ztex->freqM] = ztex->errorRate[ztex->freqM];
if (!ztex_updateFreq(ztex)) {
// Something really serious happened, so mark this thread as dead!
free(lastnonce);
free(backlog);
return -1;
}
applog(LOG_DEBUG, "%s: exit %1.8X", ztex->repr, noncecnt);
work->blk.nonce = 0xffffffff;
free(lastnonce);
free(backlog);
return noncecnt;
}
static void ztex_statline_before(char *buf, struct cgpu_info *cgpu)
{
if (cgpu->deven == DEV_ENABLED) {
tailsprintf(buf, "%s-%d | ", cgpu->device_ztex->snString, cgpu->device_ztex->fpgaNum+1);
tailsprintf(buf, "%0.1fMHz | ", cgpu->device_ztex->freqM1 * (cgpu->device_ztex->freqM + 1));
}
}
static bool ztex_prepare(struct thr_info *thr)
{
struct timeval now;
struct cgpu_info *cgpu = thr->cgpu;
struct libztex_device *ztex = cgpu->device_ztex;
gettimeofday(&now, NULL);
get_datestamp(cgpu->init, &now);
ztex_selectFpga(ztex);
if (libztex_configureFpga(ztex) != 0) {
libztex_resetFpga(ztex);
ztex_releaseFpga(ztex);
applog(LOG_ERR, "%s: Disabling!", thr->cgpu->device_ztex->repr);
thr->cgpu->deven = DEV_DISABLED;
return true;
}
ztex->freqM = ztex->freqMaxM+1;;
//ztex_updateFreq(ztex);
libztex_setFreq(ztex, ztex->freqMDefault);
ztex_releaseFpga(ztex);
applog(LOG_DEBUG, "%s: prepare", ztex->repr);
return true;
}
static void ztex_shutdown(struct thr_info *thr)
{
if (thr->cgpu->device_ztex != NULL) {
if (thr->cgpu->device_ztex->fpgaNum == 0)
pthread_mutex_destroy(&thr->cgpu->device_ztex->mutex);
applog(LOG_DEBUG, "%s: shutdown", thr->cgpu->device_ztex->repr);
libztex_destroy_device(thr->cgpu->device_ztex);
thr->cgpu->device_ztex = NULL;
}
}
static void ztex_disable(struct thr_info *thr)
{
applog(LOG_ERR, "%s: Disabling!", thr->cgpu->device_ztex->repr);
devices[thr->cgpu->device_id]->deven = DEV_DISABLED;
ztex_shutdown(thr);
}
static int64_t bitforce_get_result(struct thr_info *thr, struct work *work)
{
struct cgpu_info *bitforce = thr->cgpu;
unsigned int delay_time_ms;
struct timeval elapsed;
struct timeval now;
char buf[BITFORCE_BUFSIZ+1];
int amount;
char *pnoncebuf;
uint32_t nonce;
while (1) {
if (unlikely(thr->work_restart))
return 0;
mutex_lock(&bitforce->device_mutex);
usb_write(bitforce, BITFORCE_WORKSTATUS, BITFORCE_WORKSTATUS_LEN, &amount, C_REQUESTWORKSTATUS);
usb_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_GETWORKSTATUS);
mutex_unlock(&bitforce->device_mutex);
cgtime(&now);
timersub(&now, &bitforce->work_start_tv, &elapsed);
if (elapsed.tv_sec >= BITFORCE_LONG_TIMEOUT_S) {
applog(LOG_ERR, "%s%i: took %ldms - longer than %dms",
bitforce->drv->name, bitforce->device_id,
tv_to_ms(elapsed), BITFORCE_LONG_TIMEOUT_MS);
return 0;
}
if (amount > 0 && buf[0] && strncasecmp(buf, "B", 1)) /* BFL does not respond during throttling */
break;
/* if BFL is throttling, no point checking so quickly */
delay_time_ms = (buf[0] ? BITFORCE_CHECK_INTERVAL_MS : 2 * WORK_CHECK_INTERVAL_MS);
nmsleep(delay_time_ms);
bitforce->wait_ms += delay_time_ms;
}
if (elapsed.tv_sec > BITFORCE_TIMEOUT_S) {
applog(LOG_ERR, "%s%i: took %ldms - longer than %dms",
bitforce->drv->name, bitforce->device_id,
tv_to_ms(elapsed), BITFORCE_TIMEOUT_MS);
dev_error(bitforce, REASON_DEV_OVER_HEAT);
/* Only return if we got nothing after timeout - there still may be results */
if (amount == 0)
return 0;
} else if (!strncasecmp(buf, BITFORCE_EITHER, BITFORCE_EITHER_LEN)) {
/* Simple timing adjustment. Allow a few polls to cope with
* OS timer delays being variably reliable. wait_ms will
* always equal sleep_ms when we've waited greater than or
* equal to the result return time.*/
delay_time_ms = bitforce->sleep_ms;
if (bitforce->wait_ms > bitforce->sleep_ms + (WORK_CHECK_INTERVAL_MS * 2))
bitforce->sleep_ms += (bitforce->wait_ms - bitforce->sleep_ms) / 2;
else if (bitforce->wait_ms == bitforce->sleep_ms) {
if (bitforce->sleep_ms > WORK_CHECK_INTERVAL_MS)
bitforce->sleep_ms -= WORK_CHECK_INTERVAL_MS;
else if (bitforce->sleep_ms > BITFORCE_CHECK_INTERVAL_MS)
bitforce->sleep_ms -= BITFORCE_CHECK_INTERVAL_MS;
}
if (delay_time_ms != bitforce->sleep_ms)
applog(LOG_DEBUG, "%s%i: Wait time changed to: %d, waited %u",
bitforce->drv->name, bitforce->device_id,
bitforce->sleep_ms, bitforce->wait_ms);
/* Work out the average time taken. Float for calculation, uint for display */
bitforce->avg_wait_f += (tv_to_ms(elapsed) - bitforce->avg_wait_f) / TIME_AVG_CONSTANT;
bitforce->avg_wait_d = (unsigned int) (bitforce->avg_wait_f + 0.5);
}
applog(LOG_DEBUG, "%s%i: waited %dms until %s",
bitforce->drv->name, bitforce->device_id,
bitforce->wait_ms, buf);
if (!strncasecmp(buf, BITFORCE_NO_NONCE, BITFORCE_NO_NONCE_MATCH))
return bitforce->nonces; /* No valid nonce found */
else if (!strncasecmp(buf, BITFORCE_IDLE, BITFORCE_IDLE_MATCH))
return 0; /* Device idle */
else if (strncasecmp(buf, BITFORCE_NONCE, BITFORCE_NONCE_LEN)) {
bitforce->hw_errors++;
applog(LOG_WARNING, "%s%i: Error: Get result reports: %s",
bitforce->drv->name, bitforce->device_id, buf);
bitforce_initialise(bitforce, true);
return 0;
}
pnoncebuf = &buf[12];
while (1) {
hex2bin((void*)&nonce, pnoncebuf, 4);
#ifndef __BIG_ENDIAN__
nonce = swab32(nonce);
#endif
if (unlikely(bitforce->nonce_range && (nonce >= work->blk.nonce ||
(work->blk.nonce > 0 && nonce < work->blk.nonce - bitforce->nonces - 1)))) {
applog(LOG_WARNING, "%s%i: Disabling broken nonce range support",
bitforce->drv->name, bitforce->device_id);
bitforce->nonce_range = false;
work->blk.nonce = 0xffffffff;
bitforce->sleep_ms *= 5;
bitforce->kname = KNAME_WORK;
}
submit_nonce(thr, work, nonce);
if (strncmp(&pnoncebuf[8], ",", 1))
break;
pnoncebuf += 9;
}
return bitforce->nonces;
}
static int64_t ztex_scanhash(struct thr_info *thr, struct work *work,
__maybe_unused int64_t max_nonce)
{
struct libztex_device *ztex;
unsigned char sendbuf[44];
int i, j, k;
uint32_t *backlog;
int backlog_p = 0, backlog_max;
uint32_t *lastnonce;
uint32_t nonce, noncecnt = 0;
bool overflow, found;
struct libztex_hash_data hdata[GOLDEN_BACKLOG];
if (thr->cgpu->deven == DEV_DISABLED)
return -1;
ztex = thr->cgpu->device_ztex;
memcpy(sendbuf, work->data + 64, 12);
memcpy(sendbuf + 12, work->midstate, 32);
ztex_selectFpga(ztex);
i = libztex_sendHashData(ztex, sendbuf);
if (i < 0) {
// Something wrong happened in send
applog(LOG_ERR, "%s: Failed to send hash data with err %d, retrying", ztex->repr, i);
nmsleep(500);
i = libztex_sendHashData(ztex, sendbuf);
if (i < 0) {
// And there's nothing we can do about it
ztex_disable(thr);
applog(LOG_ERR, "%s: Failed to send hash data with err %d, giving up", ztex->repr, i);
ztex_releaseFpga(ztex);
return -1;
}
}
ztex_releaseFpga(ztex);
applog(LOG_DEBUG, "%s: sent hashdata", ztex->repr);
lastnonce = calloc(1, sizeof(uint32_t)*ztex->numNonces);
if (lastnonce == NULL) {
applog(LOG_ERR, "%s: failed to allocate lastnonce[%d]", ztex->repr, ztex->numNonces);
return -1;
}
/* Add an extra slot for detecting dupes that lie around */
backlog_max = ztex->numNonces * (2 + ztex->extraSolutions);
backlog = calloc(1, sizeof(uint32_t) * backlog_max);
if (backlog == NULL) {
applog(LOG_ERR, "%s: failed to allocate backlog[%d]", ztex->repr, backlog_max);
return -1;
}
overflow = false;
int count = 0;
int validNonces = 0;
double errorCount = 0;
applog(LOG_DEBUG, "%s: entering poll loop", ztex->repr);
while (!(overflow || thr->work_restart)) {
count++;
int sleepcount = 0;
while (thr->work_restart == 0 && sleepcount < 25) {
nmsleep(10);
sleepcount += 1;
}
if (thr->work_restart) {
applog(LOG_DEBUG, "%s: New work detected", ztex->repr);
break;
}
ztex_selectFpga(ztex);
i = libztex_readHashData(ztex, &hdata[0]);
if (i < 0) {
// Something wrong happened in read
applog(LOG_ERR, "%s: Failed to read hash data with err %d, retrying", ztex->repr, i);
nmsleep(500);
i = libztex_readHashData(ztex, &hdata[0]);
if (i < 0) {
// And there's nothing we can do about it
ztex_disable(thr);
applog(LOG_ERR, "%s: Failed to read hash data with err %d, giving up", ztex->repr, i);
free(lastnonce);
free(backlog);
ztex_releaseFpga(ztex);
return -1;
}
}
ztex_releaseFpga(ztex);
if (thr->work_restart) {
applog(LOG_DEBUG, "%s: New work detected", ztex->repr);
break;
}
ztex->errorCount[ztex->freqM] *= 0.995;
ztex->errorWeight[ztex->freqM] = ztex->errorWeight[ztex->freqM] * 0.995 + 1.0;
for (i = 0; i < ztex->numNonces; i++) {
nonce = hdata[i].nonce;
if (nonce > noncecnt)
noncecnt = nonce;
if (((0xffffffff - nonce) < (nonce - lastnonce[i])) || nonce < lastnonce[i]) {
applog(LOG_DEBUG, "%s: overflow nonce=%0.8x lastnonce=%0.8x", ztex->repr, nonce, lastnonce[i]);
overflow = true;
} else
lastnonce[i] = nonce;
if (ztex_checkNonce(work, nonce) != (hdata->hash7 + 0x5be0cd19)) {
applog(LOG_DEBUG, "%s: checkNonce failed for %0.8X", ztex->repr, nonce);
// do not count errors in the first 500ms after sendHashData (2x250 wait time)
if (count > 2) {
thr->cgpu->hw_errors++;
errorCount += (1.0 / ztex->numNonces);
}
}
else
validNonces++;
for (j=0; j<=ztex->extraSolutions; j++) {
nonce = hdata[i].goldenNonce[j];
if (nonce == ztex->offsNonces) {
continue;
}
// precheck the extraSolutions since they often fail
if (j > 0 && ztex_checkNonce(work, nonce) != 0) {
continue;
}
found = false;
for (k = 0; k < backlog_max; k++) {
if (backlog[k] == nonce) {
found = true;
break;
}
}
if (!found) {
applog(LOG_DEBUG, "%s: Share found N%dE%d", ztex->repr, i, j);
backlog[backlog_p++] = nonce;
if (backlog_p >= backlog_max)
backlog_p = 0;
work->blk.nonce = 0xffffffff;
submit_nonce(thr, work, nonce);
applog(LOG_DEBUG, "%s: submitted %0.8x", ztex->repr, nonce);
}
}
}
}
// only add the errorCount if we had at least some valid nonces or
// had no valid nonces in the last round
if (errorCount > 0.0) {
if (ztex->nonceCheckValid > 0 && validNonces == 0) {
applog(LOG_ERR, "%s: resetting %.1f errors", ztex->repr, errorCount);
}
else {
ztex->errorCount[ztex->freqM] += errorCount;
}
}
// remember the number of valid nonces for the check in the next round
ztex->nonceCheckValid = validNonces;
ztex->errorRate[ztex->freqM] = ztex->errorCount[ztex->freqM] / ztex->errorWeight[ztex->freqM] * (ztex->errorWeight[ztex->freqM] < 100? ztex->errorWeight[ztex->freqM] * 0.01: 1.0);
if (ztex->errorRate[ztex->freqM] > ztex->maxErrorRate[ztex->freqM])
ztex->maxErrorRate[ztex->freqM] = ztex->errorRate[ztex->freqM];
if (!ztex_updateFreq(ztex)) {
// Something really serious happened, so mark this thread as dead!
free(lastnonce);
free(backlog);
return -1;
}
applog(LOG_DEBUG, "%s: exit %1.8X", ztex->repr, noncecnt);
work->blk.nonce = 0xffffffff;
free(lastnonce);
free(backlog);
return noncecnt;
}
static int64_t bitfury_scanHash(struct thr_info *thr)
{
static struct bitfury_device *devices; // TODO Move somewhere to appropriate place
int chip_n;
int chip;
uint64_t hashes = 0;
struct timeval now;
unsigned char line[2048];
int short_stat = 10;
static time_t short_out_t;
int long_stat = 1800;
static time_t long_out_t;
int long_long_stat = 60 * 30;
static time_t long_long_out_t;
static first = 0; //TODO Move to detect()
int i;
devices = thr->cgpu->devices;
chip_n = thr->cgpu->chip_n;
if (!first) {
for (i = 0; i < chip_n; i++) {
devices[i].osc6_bits = 54;
}
for (i = 0; i < chip_n; i++) {
send_reinit(devices[i].slot, devices[i].fasync, devices[i].osc6_bits);
}
}
first = 1;
for (chip = 0; chip < chip_n; chip++) {
devices[chip].job_switched = 0;
if(!devices[chip].work) {
devices[chip].work = get_queued(thr->cgpu);
if (devices[chip].work == NULL) {
return 0;
}
work_to_payload(&(devices[chip].payload), devices[chip].work);
}
}
libbitfury_sendHashData(devices, chip_n);
nmsleep(5);
cgtime(&now);
chip = 0;
for (;chip < chip_n; chip++) {
if (devices[chip].job_switched) {
int i,j;
int *res = devices[chip].results;
struct work *work = devices[chip].work;
struct work *owork = devices[chip].owork;
struct work *o2work = devices[chip].o2work;
i = devices[chip].results_n;
for (j = i - 1; j >= 0; j--) {
if (owork) {
submit_nonce(thr, owork, bswap_32(res[j]));
devices[chip].stat_ts[devices[chip].stat_counter++] =
now.tv_sec;
if (devices[chip].stat_counter == BITFURY_STAT_N) {
devices[chip].stat_counter = 0;
}
}
if (o2work) {
// TEST
//submit_nonce(thr, owork, bswap_32(res[j]));
}
}
devices[chip].results_n = 0;
devices[chip].job_switched = 0;
if (devices[chip].old_nonce && o2work) {
submit_nonce(thr, o2work, bswap_32(devices[chip].old_nonce));
i++;
}
if (devices[chip].future_nonce) {
submit_nonce(thr, work, bswap_32(devices[chip].future_nonce));
i++;
}
if (o2work)
work_completed(thr->cgpu, o2work);
devices[chip].o2work = devices[chip].owork;
devices[chip].owork = devices[chip].work;
devices[chip].work = NULL;
hashes += 0xffffffffull * i;
}
}
if (now.tv_sec - short_out_t > short_stat) {
int shares_first = 0, shares_last = 0, shares_total = 0;
char stat_lines[32][256] = {0};
int len, k;
double gh[32][8] = {0};
double ghsum = 0, gh1h = 0, gh2h = 0;
unsigned strange_counter = 0;
for (chip = 0; chip < chip_n; chip++) {
int shares_found = calc_stat(devices[chip].stat_ts, short_stat, now);
double ghash;
len = strlen(stat_lines[devices[chip].slot]);
ghash = shares_to_ghashes(shares_found, short_stat);
gh[devices[chip].slot][chip & 0x07] = ghash;
snprintf(stat_lines[devices[chip].slot] + len, 256 - len, "%.1f-%3.0f ", ghash, devices[chip].mhz);
if(short_out_t && ghash < 0.5) {
applog(LOG_WARNING, "Chip_id %d FREQ CHANGE\n", chip);
send_freq(devices[chip].slot, devices[chip].fasync, devices[chip].osc6_bits - 1);
nmsleep(1);
send_freq(devices[chip].slot, devices[chip].fasync, devices[chip].osc6_bits);
}
shares_total += shares_found;
shares_first += chip < 4 ? shares_found : 0;
shares_last += chip > 3 ? shares_found : 0;
strange_counter += devices[chip].strange_counter;
devices[chip].strange_counter = 0;
}
sprintf(line, "vvvvwww SHORT stat %ds: wwwvvvv", short_stat);
applog(LOG_WARNING, line);
sprintf(line, "stranges: %u", strange_counter);
applog(LOG_WARNING, line);
for(i = 0; i < 32; i++)
if(strlen(stat_lines[i])) {
len = strlen(stat_lines[i]);
ghsum = 0;
gh1h = 0;
gh2h = 0;
for(k = 0; k < 4; k++) {
gh1h += gh[i][k];
gh2h += gh[i][k+4];
ghsum += gh[i][k] + gh[i][k+4];
}
snprintf(stat_lines[i] + len, 256 - len, "- %2.1f + %2.1f = %2.1f slot %i ", gh1h, gh2h, ghsum, i);
applog(LOG_WARNING, stat_lines[i]);
}
short_out_t = now.tv_sec;
}
if (now.tv_sec - long_out_t > long_stat) {
int shares_first = 0, shares_last = 0, shares_total = 0;
char stat_lines[32][256] = {0};
int len, k;
double gh[32][8] = {0};
double ghsum = 0, gh1h = 0, gh2h = 0;
for (chip = 0; chip < chip_n; chip++) {
int shares_found = calc_stat(devices[chip].stat_ts, long_stat, now);
double ghash;
len = strlen(stat_lines[devices[chip].slot]);
ghash = shares_to_ghashes(shares_found, long_stat);
gh[devices[chip].slot][chip & 0x07] = ghash;
snprintf(stat_lines[devices[chip].slot] + len, 256 - len, "%.1f-%3.0f ", ghash, devices[chip].mhz);
shares_total += shares_found;
shares_first += chip < 4 ? shares_found : 0;
shares_last += chip > 3 ? shares_found : 0;
}
sprintf(line, "!!!_________ LONG stat %ds: ___________!!!", long_stat);
applog(LOG_WARNING, line);
for(i = 0; i < 32; i++)
if(strlen(stat_lines[i])) {
len = strlen(stat_lines[i]);
ghsum = 0;
gh1h = 0;
gh2h = 0;
for(k = 0; k < 4; k++) {
gh1h += gh[i][k];
gh2h += gh[i][k+4];
ghsum += gh[i][k] + gh[i][k+4];
}
snprintf(stat_lines[i] + len, 256 - len, "- %2.1f + %2.1f = %2.1f slot %i ", gh1h, gh2h, ghsum, i);
applog(LOG_WARNING, stat_lines[i]);
}
long_out_t = now.tv_sec;
}
return hashes;
}
static int64_t ztex_scanhash(struct thr_info *thr, struct work *work,
__maybe_unused int64_t max_nonce)
{
struct cgpu_info *cgpu = thr->cgpu;
struct libztex_device *ztex;
unsigned char sendbuf[44];
int i, j, k;
uint32_t *backlog;
int backlog_p = 0, backlog_max;
uint32_t *lastnonce;
uint32_t nonce, noncecnt = 0;
bool overflow, found;
struct libztex_hash_data hdata[GOLDEN_BACKLOG];
if (thr->cgpu->deven == DEV_DISABLED)
return -1;
ztex = thr->cgpu->device_ztex;
memcpy(sendbuf, work->data + 64, 12);
memcpy(sendbuf + 12, work->midstate, 32);
ztex_selectFpga(ztex, cgpu->proc_id);
i = libztex_sendHashData(ztex, sendbuf);
if (i < 0) {
// Something wrong happened in send
applog(LOG_ERR, "%"PRIpreprv": Failed to send hash data with err %d, retrying", cgpu->proc_repr, i);
cgsleep_ms(500);
i = libztex_sendHashData(ztex, sendbuf);
if (i < 0) {
// And there's nothing we can do about it
ztex_disable(thr);
applog(LOG_ERR, "%"PRIpreprv": Failed to send hash data with err %d, giving up", cgpu->proc_repr, i);
ztex_releaseFpga(ztex);
return -1;
}
}
ztex_releaseFpga(ztex);
applog(LOG_DEBUG, "%"PRIpreprv": sent hashdata", cgpu->proc_repr);
lastnonce = calloc(1, sizeof(uint32_t)*ztex->numNonces);
if (lastnonce == NULL) {
applog(LOG_ERR, "%"PRIpreprv": failed to allocate lastnonce[%d]", cgpu->proc_repr, ztex->numNonces);
return -1;
}
/* Add an extra slot for detecting dupes that lie around */
backlog_max = ztex->numNonces * (2 + ztex->extraSolutions);
backlog = calloc(1, sizeof(uint32_t) * backlog_max);
if (backlog == NULL) {
applog(LOG_ERR, "%"PRIpreprv": failed to allocate backlog[%d]", cgpu->proc_repr, backlog_max);
free(lastnonce);
return -1;
}
overflow = false;
int count = 0;
applog(LOG_DEBUG, "%"PRIpreprv": entering poll loop", cgpu->proc_repr);
while (!(overflow || thr->work_restart)) {
count++;
if (!restart_wait(thr, 250))
{
applog(LOG_DEBUG, "%"PRIpreprv": New work detected", cgpu->proc_repr);
break;
}
ztex_selectFpga(ztex, cgpu->proc_id);
i = libztex_readHashData(ztex, &hdata[0]);
if (i < 0) {
// Something wrong happened in read
applog(LOG_ERR, "%"PRIpreprv": Failed to read hash data with err %d, retrying", cgpu->proc_repr, i);
cgsleep_ms(500);
i = libztex_readHashData(ztex, &hdata[0]);
if (i < 0) {
// And there's nothing we can do about it
ztex_disable(thr);
applog(LOG_ERR, "%"PRIpreprv": Failed to read hash data with err %d, giving up", cgpu->proc_repr, i);
free(lastnonce);
free(backlog);
ztex_releaseFpga(ztex);
return -1;
}
}
ztex_releaseFpga(ztex);
if (thr->work_restart) {
applog(LOG_DEBUG, "%"PRIpreprv": New work detected", cgpu->proc_repr);
break;
}
dclk_gotNonces(&ztex->dclk);
for (i = 0; i < ztex->numNonces; i++) {
nonce = hdata[i].nonce;
if (nonce > noncecnt)
noncecnt = nonce;
if (((0xffffffff - nonce) < (nonce - lastnonce[i])) || nonce < lastnonce[i]) {
applog(LOG_DEBUG, "%"PRIpreprv": overflow nonce=%08x lastnonce=%08x", cgpu->proc_repr, nonce, lastnonce[i]);
overflow = true;
} else
lastnonce[i] = nonce;
if (!ztex_checkNonce(cgpu, work, &hdata[i])) {
// do not count errors in the first 500ms after sendHashData (2x250 wait time)
if (count > 2)
dclk_errorCount(&ztex->dclk, 1.0 / ztex->numNonces);
inc_hw_errors_only(thr);
}
for (j=0; j<=ztex->extraSolutions; j++) {
nonce = hdata[i].goldenNonce[j];
if (nonce == ztex->offsNonces) {
continue;
}
found = false;
for (k = 0; k < backlog_max; k++) {
if (backlog[k] == nonce) {
found = true;
break;
}
}
if (!found) {
backlog[backlog_p++] = nonce;
if (backlog_p >= backlog_max)
backlog_p = 0;
work->blk.nonce = 0xffffffff;
if (!j || test_nonce(work, nonce, false))
submit_nonce(thr, work, nonce);
applog(LOG_DEBUG, "%"PRIpreprv": submitted %08x (from N%dE%d)", cgpu->proc_repr, nonce, i, j);
}
}
}
}
dclk_preUpdate(&ztex->dclk);
if (!ztex_updateFreq(thr)) {
// Something really serious happened, so mark this thread as dead!
free(lastnonce);
free(backlog);
return -1;
}
applog(LOG_DEBUG, "%"PRIpreprv": exit %1.8X", cgpu->proc_repr, noncecnt);
work->blk.nonce = 0xffffffff;
free(lastnonce);
free(backlog);
return noncecnt;
}
static int64_t serial_fpga_scanwork(struct thr_info *thr)
{
struct cgpu_info *serial_fpga;
int fd;
int ret;
struct FPGA_INFO *info;
unsigned char ob_bin[44], nonce_buf[SERIAL_READ_SIZE];
char *ob_hex;
uint32_t nonce;
int64_t hash_count;
struct timeval tv_start, tv_finish, elapsed, tv_end, diff;
int curr_hw_errors, i, j;
uint32_t * ob;
ob = (uint32_t *)ob_bin;
int count;
double Hs, W, fullnonce;
int read_count;
int64_t estimate_hashes;
uint32_t values;
int64_t hash_count_range;
struct work *work;
applog(LOG_DEBUG, "serial_fpga_scanwork...");
if (thr->cgpu->deven == DEV_DISABLED)
return -1;
serial_fpga = thr->cgpu;
info = serial_fpga->device_data;
work = get_work(thr, thr->id);
if (info->device_fd == -1) {
applog(LOG_INFO, "Attemping to Reopen Serial FPGA on %s", serial_fpga->device_path);
fd = serial_open(serial_fpga->device_path, SERIAL_IO_SPEED, SERIAL_READ_TIMEOUT, false);
if (unlikely(-1 == fd)) {
applog(LOG_ERR, "Failed to open Serial FPGA on %s",
serial_fpga->device_path);
return -1;
}
else
info->device_fd = fd;
}
fd = info->device_fd;
memset(ob_bin, 0, sizeof(ob_bin));
// Currently, extra nonces are not supported
//
memset((unsigned char*)work->data + 144, 0, 12);
//
//
calc_midstate(work);
memcpy(ob_bin, work->midstate, 32); // Midstate
memcpy(ob_bin + 32, work->data + 128, 12); // Remaining Bytes From Block Header
// Send Bytes To FPGA In Reverse Order
unsigned char swap[44];
uint32_t * sw;
sw = (uint32_t *)swap;
for (j=0; j<8; j++) {
sw[j] = swab32(ob[j]);
}
memcpy(swap + 32, ob_bin + 32, 12);
for (j=0; j<44; j++) {
ob_bin[j] = swap[j];
}
//unsigned char* b = (unsigned char*)(ob_bin);
//applog(LOG_WARNING, "swap: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", b[28],b[29],b[30],b[31],b[32],b[33],b[34],b[35],b[36],b[37],b[38],b[39],b[40],b[41],b[42],b[43]);
//applog(LOG_WARNING, "swap: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", b[0],b[1],b[2],b[3],b[4],b[5],b[6],b[7],b[8],b[9],b[10],b[11],b[12],b[13],b[14],b[15],b[16],b[17],b[18],b[19],b[20],b[21],b[22],b[23],b[24],b[25],b[26],b[27],b[28],b[29],b[30],b[31],b[32],b[33],b[34],b[35],b[36],b[37],b[38],b[39],b[40],b[41],b[42],b[43]);
//#ifndef WIN32
// tcflush(fd, TCOFLUSH);
//#endif
// Send Data To FPGA
ret = write(fd, ob_bin, sizeof(ob_bin));
if (ret != sizeof(ob_bin)) {
applog(LOG_ERR, "%s%i: Serial Send Error (ret=%d)", serial_fpga->drv->name, serial_fpga->device_id, ret);
serial_fpga_close(thr);
dev_error(serial_fpga, REASON_DEV_COMMS_ERROR);
return 0;
}
if (opt_debug) {
ob_hex = bin2hex(ob_bin, sizeof(ob_bin));
applog(LOG_DEBUG, "Serial FPGA %d sent: %s",
serial_fpga->device_id, ob_hex);
free(ob_hex);
}
elapsed.tv_sec = 0;
elapsed.tv_usec = 0;
cgtime(&tv_start);
applog(LOG_DEBUG, "%s%i: Begin Scan For Nonces", serial_fpga->drv->name, serial_fpga->device_id);
while (thr && !thr->work_restart) {
memset(nonce_buf,0,4);
// Check Serial Port For 1/10 Sec For Nonce
ret = read(fd, nonce_buf, SERIAL_READ_SIZE);
// Calculate Elapsed Time
cgtime(&tv_end);
timersub(&tv_end, &tv_start, &elapsed);
if (ret == 0) { // No Nonce Found
if (elapsed.tv_sec > info->timeout) {
applog(LOG_DEBUG, "%s%i: End Scan For Nonces - Time = %d sec", serial_fpga->drv->name, serial_fpga->device_id, elapsed.tv_sec);
break;
}
continue;
}
else if (ret < SERIAL_READ_SIZE) {
applog(LOG_ERR, "%s%i: Serial Read Error (ret=%d)", serial_fpga->drv->name, serial_fpga->device_id, ret);
serial_fpga_close(thr);
dev_error(serial_fpga, REASON_DEV_COMMS_ERROR);
break;
}
memcpy((char *)&nonce, nonce_buf, SERIAL_READ_SIZE);
#if !defined (__BIG_ENDIAN__) && !defined(MIPSEB)
nonce = swab32(nonce);
#endif
curr_hw_errors = serial_fpga->hw_errors;
applog(LOG_INFO, "%s%i: Nonce Found - %08X (%5.1fMhz)", serial_fpga->drv->name, serial_fpga->device_id, nonce, (double)(1/(info->Hs * 1000000)));
submit_nonce(thr, work, nonce);
// Update Hashrate
if (serial_fpga->hw_errors == curr_hw_errors)
info->Hs = ((double)(elapsed.tv_sec) + ((double)(elapsed.tv_usec))/((double)1000000)) / (double)nonce;
}
// Estimate Number Of Hashes
hash_count = ((double)(elapsed.tv_sec) + ((double)(elapsed.tv_usec))/((double)1000000)) / info->Hs;
free_work(work);
return hash_count;
}
static int64_t ztex_scanhash(struct thr_info *thr, struct work *work,
__maybe_unused int64_t max_nonce)
{
// int numbytes = 80; // KRAMBLE 80 byte protocol
int numbytes = 76; // KRAMBLE 76 byte protocol
struct libztex_device *ztex;
unsigned char sendbuf[80]; // KRAMBLE
int i, j, k;
uint32_t *backlog;
int backlog_p = 0, backlog_max;
uint32_t *lastnonce;
uint32_t nonce, noncecnt = 0;
bool overflow, found;
struct libztex_hash_data hdata[GOLDEN_BACKLOG];
if (thr->cgpu->deven == DEV_DISABLED)
return -1;
ztex = thr->cgpu->device_ztex;
// memcpy(sendbuf, work->data + 64, 12);
// memcpy(sendbuf + 12, work->midstate, 32);
memcpy(sendbuf, work->data, numbytes); // KRAMBLE
ztex_selectFpga(ztex);
i = libztex_sendHashData(ztex, sendbuf, numbytes);
if (i < 0) {
// Something wrong happened in send
applog(LOG_ERR, "%s: Failed to send hash data with err %d, retrying", ztex->repr, i);
nmsleep(500);
i = libztex_sendHashData(ztex, sendbuf, numbytes);
if (i < 0) {
// And there's nothing we can do about it
ztex_disable(thr);
applog(LOG_ERR, "%s: Failed to send hash data with err %d, giving up", ztex->repr, i);
ztex_releaseFpga(ztex);
return -1;
}
}
ztex_releaseFpga(ztex);
#if 0 // KRAMBLE
char *data = bin2hex(work->data, sizeof(work->data));
applog(LOG_INFO, "%s: sent data %s", ztex->repr, data);
#endif
lastnonce = calloc(1, sizeof(uint32_t)*ztex->numNonces);
if (lastnonce == NULL) {
applog(LOG_ERR, "%s: failed to allocate lastnonce[%d]", ztex->repr, ztex->numNonces);
return -1;
}
/* Add an extra slot for detecting dupes that lie around */
backlog_max = ztex->numNonces * (2 + ztex->extraSolutions);
backlog = calloc(1, sizeof(uint32_t) * backlog_max);
if (backlog == NULL) {
applog(LOG_ERR, "%s: failed to allocate backlog[%d]", ztex->repr, backlog_max);
return -1;
}
overflow = false;
int count = 0;
int validNonces = 0;
double errorCount = 0;
applog(LOG_DEBUG, "%s: entering poll loop", ztex->repr);
while (!(overflow || thr->work_restart)) {
count++;
int sleepcount = 0;
while (thr->work_restart == 0 && sleepcount < 25) {
nmsleep(10);
sleepcount += 1;
}
if (thr->work_restart) {
applog(LOG_DEBUG, "%s: New work detected", ztex->repr);
break;
}
ztex_selectFpga(ztex);
i = libztex_readHashData(ztex, &hdata[0]);
if (i < 0) {
// Something wrong happened in read
applog(LOG_ERR, "%s: Failed to read hash data with err %d, retrying", ztex->repr, i);
nmsleep(500);
i = libztex_readHashData(ztex, &hdata[0]);
if (i < 0) {
// And there's nothing we can do about it
ztex_disable(thr);
applog(LOG_ERR, "%s: Failed to read hash data with err %d, giving up", ztex->repr, i);
free(lastnonce);
free(backlog);
ztex_releaseFpga(ztex);
return -1;
}
}
ztex_releaseFpga(ztex);
if (thr->work_restart) {
applog(LOG_DEBUG, "%s: New work detected", ztex->repr);
break;
}
ztex->errorCount[ztex->freqM] *= 0.995;
ztex->errorWeight[ztex->freqM] = ztex->errorWeight[ztex->freqM] * 0.995 + 1.0;
for (i = 0; i < ztex->numNonces; i++) {
nonce = hdata[i].nonce;
//if (nonce > noncecnt) by smartbitcoin
// fix the verilog bug which send INT_MAX as nonce sometime.
// NB: cgminer , nonce counter was int64, but ztex driver was int32.
if( nonce > noncecnt && nonce < 1<<28 )
noncecnt = nonce;
// KRAMBLE don't overflow if nonce == 0 (eg if fpga is not hashing)
if ( (((0xffffffff - nonce) < (nonce - lastnonce[i])) || nonce < lastnonce[i]) && nonce ) {
applog(LOG_INFO, "%s: overflow nonce=%08x lastnonce=%08x", ztex->repr, nonce, lastnonce[i]); // KRAMBLE not in production ??
// applog(LOG_DEBUG, "%s: overflow nonce=%08x lastnonce=%08x", ztex->repr, nonce, lastnonce[i]);
// overflow = true; // KRAMBLE disabled as it should not happen at litecoin hash rates (except when broken
// so leave warning message enabled)
} else
lastnonce[i] = nonce;
// KRAMBLE try forcing overflow every so often to see if this fixes DIFF & SICK problems
// if (nonce > 0x00040000) // Overflow every 256k nonces (a few times a minute, depending on hash rate)
if (nonce > 0x00100000) // Overflow every 1M nonces (single core needs larger range to avoid duplicates)
{
// applog(LOG_INFO, "%s: force overflow nonce=%08x lastnonce=%08x", ztex->repr, nonce, lastnonce[i]); // KRAMBLE not in production
overflow = true;
}
if (ztex_checkNonce(work, nonce) != (hdata->hash7)) {
applog(LOG_INFO, "%s: checkNonce failed for %08X hash7 %08X", ztex->repr, nonce, hdata->hash7); // KRAMBLE not in production ??
// applog(LOG_DEBUG, "%s: checkNonce failed for %08X", ztex->repr, nonce);
// do not count errors in the first 500ms after sendHashData (2x250 wait time)
if (count > 2) {
thr->cgpu->hw_errors++;
errorCount += (1.0 / ztex->numNonces);
}
}
else
validNonces++;
for (j=0; j<=ztex->extraSolutions; j++) {
nonce = hdata[i].goldenNonce[j];
if (nonce == ztex->offsNonces) {
continue;
}
// precheck the extraSolutions since they often fail
if (j > 0 && ztex_checkNonce(work, nonce) != 0) {
continue;
}
found = false;
for (k = 0; k < backlog_max; k++) {
if (backlog[k] == nonce) {
found = true;
break;
}
}
if (!found) {
applog(LOG_INFO, "%s: Share found %08x", ztex->repr, nonce); // KRAMBLE useful to show its working
// applog(LOG_DEBUG, "%s: Share found N%dE%d", ztex->repr, i, j);
backlog[backlog_p++] = nonce;
if (backlog_p >= backlog_max)
backlog_p = 0;
work->blk.nonce = 0xffffffff;
submit_nonce(thr, work, nonce);
applog(LOG_DEBUG, "%s: submitted %08x", ztex->repr, nonce);
}
}
}
}
// only add the errorCount if we had at least some valid nonces or
// had no valid nonces in the last round
if (errorCount > 0.0) {
if (ztex->nonceCheckValid > 0 && validNonces == 0) {
applog(LOG_ERR, "%s: resetting %.1f errors", ztex->repr, errorCount);
}
else {
ztex->errorCount[ztex->freqM] += errorCount;
}
}
// remember the number of valid nonces for the check in the next round
ztex->nonceCheckValid = validNonces;
ztex->errorRate[ztex->freqM] = ztex->errorCount[ztex->freqM] / ztex->errorWeight[ztex->freqM] * (ztex->errorWeight[ztex->freqM] < 100? ztex->errorWeight[ztex->freqM] * 0.01: 1.0);
if (ztex->errorRate[ztex->freqM] > ztex->maxErrorRate[ztex->freqM])
ztex->maxErrorRate[ztex->freqM] = ztex->errorRate[ztex->freqM];
// KRAMBLE Disable ztex_updateFreq if lockClock flag set (ie --ztex-clock set initial and max freq to the same value)
if (!ztex->lockClock) {
if (!ztex_updateFreq(ztex)) {
// Something really serious happened, so mark this thread as dead!
free(lastnonce);
free(backlog);
return -1;
}
}
applog(LOG_DEBUG, "%s: exit %1.8X", ztex->repr, noncecnt);
work->blk.nonce = 0xffffffff;
free(lastnonce);
free(backlog);
return noncecnt;
}