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_shutdown(struct thr_info *thr)
{
struct cgpu_info *cgpu = thr->cgpu;
struct libztex_device *ztex = cgpu->device_ztex;
if (!ztex)
return;
cgpu->device_ztex = NULL;
applog(LOG_DEBUG, "%"PRIpreprv": shutdown", cgpu->proc_repr);
if (--ztex->handles)
return;
applog(LOG_DEBUG, "%s: No handles remaining, destroying libztex device", cgpu->dev_repr);
if (ztex->root->numberOfFpgas > 1)
pthread_mutex_destroy(&ztex->mutex);
libztex_destroy_device(ztex);
}
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);
}
