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_ftdi_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_GETWORKSTATUS);
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, "%s%i: took %dms - 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 %dms - 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, "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, "%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[2], "-", 1))
return bitforce->nonces; /* No valid nonce found */
else if (!strncasecmp(buf, "I", 1))
return 0; /* Device idle */
else if (strncasecmp(buf, "NONCE-FOUND", 11)) {
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 bool bitforce_send_work(struct thr_info *thr, struct work *work)
{
struct cgpu_info *bitforce = thr->cgpu;
unsigned char ob[70];
char buf[BITFORCE_BUFSIZ+1];
int err, amount;
char *s;
char *cmd;
int len;
re_send:
if (bitforce->nonce_range) {
cmd = BITFORCE_SENDRANGE;
len = BITFORCE_SENDRANGE_LEN;
} else {
cmd = BITFORCE_SENDWORK;
len = BITFORCE_SENDWORK_LEN;
}
mutex_lock(&bitforce->device_mutex);
if ((err = usb_write(bitforce, cmd, len, &amount, C_REQUESTSENDWORK)) < 0 || amount != len) {
mutex_unlock(&bitforce->device_mutex);
applog(LOG_ERR, "%s%i: request send work failed (%d:%d)",
bitforce->drv->name, bitforce->device_id, amount, err);
return false;
}
if ((err = usb_ftdi_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_REQUESTSENDWORKSTATUS)) < 0) {
mutex_unlock(&bitforce->device_mutex);
applog(LOG_ERR, "%s%d: read request send work status failed (%d:%d)",
bitforce->drv->name, bitforce->device_id, amount, err);
return false;
}
if (amount == 0 || !buf[0] || !strncasecmp(buf, "B", 1)) {
mutex_unlock(&bitforce->device_mutex);
nmsleep(WORK_CHECK_INTERVAL_MS);
goto re_send;
} else if (unlikely(strncasecmp(buf, "OK", 2))) {
mutex_unlock(&bitforce->device_mutex);
if (bitforce->nonce_range) {
applog(LOG_WARNING, "%s%i: Does not support nonce range, disabling",
bitforce->drv->name, bitforce->device_id);
bitforce->nonce_range = false;
bitforce->sleep_ms *= 5;
bitforce->kname = KNAME_WORK;
goto re_send;
}
applog(LOG_ERR, "%s%i: Error: Send work reports: %s",
bitforce->drv->name, bitforce->device_id, buf);
return false;
}
sprintf((char *)ob, ">>>>>>>>");
memcpy(ob + 8, work->midstate, 32);
memcpy(ob + 8 + 32, work->data + 64, 12);
if (!bitforce->nonce_range) {
sprintf((char *)ob + 8 + 32 + 12, ">>>>>>>>");
work->blk.nonce = bitforce->nonces = 0xffffffff;
len = 60;
} else {
uint32_t *nonce;
nonce = (uint32_t *)(ob + 8 + 32 + 12);
*nonce = htobe32(work->blk.nonce);
nonce = (uint32_t *)(ob + 8 + 32 + 12 + 4);
/* Split work up into 1/5th nonce ranges */
bitforce->nonces = 0x33333332;
*nonce = htobe32(work->blk.nonce + bitforce->nonces);
work->blk.nonce += bitforce->nonces + 1;
sprintf((char *)ob + 8 + 32 + 12 + 8, ">>>>>>>>");
len = 68;
}
if ((err = usb_write(bitforce, (char *)ob, len, &amount, C_SENDWORK)) < 0 || amount != len) {
mutex_unlock(&bitforce->device_mutex);
applog(LOG_ERR, "%s%i: send work failed (%d:%d)",
bitforce->drv->name, bitforce->device_id, amount, err);
return false;
}
if ((err = usb_ftdi_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_SENDWORKSTATUS)) < 0) {
mutex_unlock(&bitforce->device_mutex);
applog(LOG_ERR, "%s%d: read send work status failed (%d:%d)",
bitforce->drv->name, bitforce->device_id, amount, err);
return false;
}
mutex_unlock(&bitforce->device_mutex);
if (opt_debug) {
s = bin2hex(ob + 8, 44);
applog(LOG_DEBUG, "%s%i: block data: %s",
bitforce->drv->name, bitforce->device_id, s);
free(s);
}
if (amount == 0 || !buf[0]) {
applog(LOG_ERR, "%s%i: Error: Send block data returned empty string/timed out",
bitforce->drv->name, bitforce->device_id);
return false;
}
if (unlikely(strncasecmp(buf, "OK", 2))) {
applog(LOG_ERR, "%s%i: Error: Send block data reports: %s",
bitforce->drv->name, bitforce->device_id, buf);
return false;
}
gettimeofday(&bitforce->work_start_tv, NULL);
return true;
}
static bool bitforce_detect_one(struct libusb_device *dev, struct usb_find_devices *found)
{
char buf[BITFORCE_BUFSIZ+1];
char devpath[20];
int err, amount;
char *s;
struct cgpu_info *bitforce = NULL;
bitforce = calloc(1, sizeof(*bitforce));
bitforce->drv = &bitforce_drv;
bitforce->deven = DEV_ENABLED;
bitforce->threads = 1;
if (!usb_init(bitforce, dev, found)) {
applog(LOG_ERR, "%s detect (%d:%d) failed to initialise (incorrect device?)",
bitforce->drv->dname,
(int)libusb_get_bus_number(dev),
(int)libusb_get_device_address(dev));
goto shin;
}
sprintf(devpath, "%d:%d",
(int)(bitforce->usbdev->bus_number),
(int)(bitforce->usbdev->device_address));
int init_count = 0;
reinit:
bitforce_initialise(bitforce, false);
if ((err = usb_write(bitforce, BITFORCE_IDENTIFY, BITFORCE_IDENTIFY_LEN, &amount, C_REQUESTIDENTIFY)) < 0 || amount != BITFORCE_IDENTIFY_LEN) {
applog(LOG_ERR, "%s detect (%s) send identify request failed (%d:%d)",
bitforce->drv->dname, devpath, amount, err);
goto unshin;
}
if ((err = usb_ftdi_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_GETIDENTIFY)) < 0 || amount < 1) {
// Maybe it was still processing previous work?
if (++init_count <= REINIT_COUNT) {
if (init_count < 2) {
applog(LOG_WARNING, "%s detect (%s) 1st init failed - retrying (%d:%d)",
bitforce->drv->dname, devpath, amount, err);
}
nmsleep(REINIT_TIME_MS);
goto reinit;
}
if (init_count > 0)
applog(LOG_WARNING, "%s detect (%s) init failed %d times",
bitforce->drv->dname, devpath, init_count);
if (err < 0) {
applog(LOG_ERR, "%s detect (%s) error identify reply (%d:%d)",
bitforce->drv->dname, devpath, amount, err);
} else {
applog(LOG_ERR, "%s detect (%s) empty identify reply (%d)",
bitforce->drv->dname, devpath, amount);
}
goto unshin;
}
buf[amount] = '\0';
if (unlikely(!strstr(buf, "SHA256"))) {
applog(LOG_ERR, "%s detect (%s) didn't recognise '%s'",
bitforce->drv->dname, devpath, buf);
goto unshin;
}
if (likely((!memcmp(buf, ">>>ID: ", 7)) && (s = strstr(buf + 3, ">>>")))) {
s[0] = '\0';
bitforce->name = strdup(buf + 7);
} else {
bitforce->name = (char *)blank;
}
// We have a real BitForce!
applog(LOG_DEBUG, "%s (%s) identified as: '%s'",
bitforce->drv->dname, devpath, bitforce->name);
/* Initially enable support for nonce range and disable it later if it
* fails */
if (opt_bfl_noncerange) {
bitforce->nonce_range = true;
bitforce->sleep_ms = BITFORCE_SLEEP_MS;
bitforce->kname = KNAME_RANGE;
} else {
bitforce->sleep_ms = BITFORCE_SLEEP_MS * 5;
bitforce->kname = KNAME_WORK;
}
bitforce->device_path = strdup(devpath);
if (!add_cgpu(bitforce))
goto unshin;
update_usb_stats(bitforce);
mutex_init(&bitforce->device_mutex);
return true;
unshin:
usb_uninit(bitforce);
shin:
free(bitforce->device_path);
if (bitforce->name != blank)
free(bitforce->name);
free(bitforce);
return false;
}
static bool bitforce_get_temp(struct cgpu_info *bitforce)
{
char buf[BITFORCE_BUFSIZ+1];
int err, amount;
char *s;
/* Do not try to get the temperature if we're polling for a result to
* minimise the chance of interleaved results */
if (bitforce->polling)
return true;
// Flash instead of Temp - doing both can be too slow
if (bitforce->flash_led) {
bitforce_flash_led(bitforce);
return true;
}
/* It is not critical getting temperature so don't get stuck if we
* can't grab the mutex here */
if (mutex_trylock(&bitforce->device_mutex))
return false;
if ((err = usb_write(bitforce, BITFORCE_TEMPERATURE, BITFORCE_TEMPERATURE_LEN, &amount, C_REQUESTTEMPERATURE)) < 0 || amount != BITFORCE_TEMPERATURE_LEN) {
mutex_unlock(&bitforce->device_mutex);
applog(LOG_ERR, "%s%i: Error: Request temp invalid/timed out (%d:%d)",
bitforce->drv->name, bitforce->device_id, amount, err);
bitforce->hw_errors++;
return false;
}
if ((err = usb_ftdi_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_GETTEMPERATURE)) < 0 || amount < 1) {
mutex_unlock(&bitforce->device_mutex);
if (err < 0) {
applog(LOG_ERR, "%s%i: Error: Get temp return invalid/timed out (%d:%d)",
bitforce->drv->name, bitforce->device_id, amount, err);
} else {
applog(LOG_ERR, "%s%i: Error: Get temp returned nothing (%d:%d)",
bitforce->drv->name, bitforce->device_id, amount, err);
}
bitforce->hw_errors++;
return false;
}
mutex_unlock(&bitforce->device_mutex);
if ((!strncasecmp(buf, "TEMP", 4)) && (s = strchr(buf + 4, ':'))) {
float temp = strtof(s + 1, NULL);
/* Cope with older software that breaks and reads nonsense
* values */
if (temp > 100)
temp = strtod(s + 1, NULL);
if (temp > 0) {
bitforce->temp = temp;
if (unlikely(bitforce->cutofftemp > 0 && temp > bitforce->cutofftemp)) {
applog(LOG_WARNING, "%s%i: Hit thermal cutoff limit, disabling!",
bitforce->drv->name, bitforce->device_id);
bitforce->deven = DEV_RECOVER;
dev_error(bitforce, REASON_DEV_THERMAL_CUTOFF);
}
}
} else {
/* Use the temperature monitor as a kind of watchdog for when
* our responses are out of sync and flush the buffer to
* hopefully recover */
applog(LOG_WARNING, "%s%i: Garbled response probably throttling, clearing buffer",
bitforce->drv->name, bitforce->device_id);
dev_error(bitforce, REASON_DEV_THROTTLE);
/* Count throttling episodes as hardware errors */
bitforce->hw_errors++;
bitforce_initialise(bitforce, true);
return false;
}
return true;
}
static bool bitforce_detect_one(struct libusb_device *dev, struct usb_find_devices *found)
{
char buf[BITFORCE_BUFSIZ+1];
char devpath[20];
int err, amount;
char *s;
struct timeval init_start, init_now;
int init_sleep, init_count;
bool ident_first;
struct cgpu_info *bitforce = NULL;
bitforce = calloc(1, sizeof(*bitforce));
bitforce->drv = &bitforce_drv;
bitforce->deven = DEV_ENABLED;
bitforce->threads = 1;
if (!usb_init(bitforce, dev, found)) {
applog(LOG_ERR, "%s detect (%d:%d) failed to initialise (incorrect device?)",
bitforce->drv->dname,
(int)(bitforce->usbinfo.bus_number),
(int)(bitforce->usbinfo.device_address));
goto shin;
}
sprintf(devpath, "%d:%d",
(int)(bitforce->usbinfo.bus_number),
(int)(bitforce->usbinfo.device_address));
// Allow 2 complete attempts if the 1st time returns an unrecognised reply
ident_first = true;
retry:
init_count = 0;
init_sleep = REINIT_TIME_FIRST_MS;
gettimeofday(&init_start, NULL);
reinit:
bitforce_initialise(bitforce, false);
if ((err = usb_write(bitforce, BITFORCE_IDENTIFY, BITFORCE_IDENTIFY_LEN, &amount, C_REQUESTIDENTIFY)) < 0 || amount != BITFORCE_IDENTIFY_LEN) {
applog(LOG_ERR, "%s detect (%s) send identify request failed (%d:%d)",
bitforce->drv->dname, devpath, amount, err);
goto unshin;
}
if ((err = usb_ftdi_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_GETIDENTIFY)) < 0 || amount < 1) {
init_count++;
gettimeofday(&init_now, NULL);
if (us_tdiff(&init_now, &init_start) <= REINIT_TIME_MAX) {
if (init_count == 2) {
applog(LOG_WARNING, "%s detect (%s) 2nd init failed (%d:%d) - retrying",
bitforce->drv->dname, devpath, amount, err);
}
nmsleep(init_sleep);
if ((init_sleep * 2) <= REINIT_TIME_MAX_MS)
init_sleep *= 2;
goto reinit;
}
if (init_count > 0)
applog(LOG_WARNING, "%s detect (%s) init failed %d times %.2fs",
bitforce->drv->dname, devpath, init_count, tdiff(&init_now, &init_start));
if (err < 0) {
applog(LOG_ERR, "%s detect (%s) error identify reply (%d:%d)",
bitforce->drv->dname, devpath, amount, err);
} else {
applog(LOG_ERR, "%s detect (%s) empty identify reply (%d)",
bitforce->drv->dname, devpath, amount);
}
goto unshin;
}
buf[amount] = '\0';
if (unlikely(!strstr(buf, "SHA256"))) {
if (ident_first) {
applog(LOG_WARNING, "%s detect (%s) didn't recognise '%s' trying again ...",
bitforce->drv->dname, devpath, buf);
ident_first = false;
goto retry;
}
applog(LOG_ERR, "%s detect (%s) didn't recognise '%s' on 2nd attempt",
bitforce->drv->dname, devpath, buf);
goto unshin;
}
if (likely((!memcmp(buf, ">>>ID: ", 7)) && (s = strstr(buf + 3, ">>>")))) {
s[0] = '\0';
bitforce->name = strdup(buf + 7);
} else {
bitforce->name = (char *)blank;
}
// We have a real BitForce!
applog(LOG_DEBUG, "%s (%s) identified as: '%s'",
bitforce->drv->dname, devpath, bitforce->name);
/* Initially enable support for nonce range and disable it later if it
* fails */
if (opt_bfl_noncerange) {
bitforce->nonce_range = true;
bitforce->sleep_ms = BITFORCE_SLEEP_MS;
bitforce->kname = KNAME_RANGE;
} else {
bitforce->sleep_ms = BITFORCE_SLEEP_MS * 5;
bitforce->kname = KNAME_WORK;
}
bitforce->device_path = strdup(devpath);
if (!add_cgpu(bitforce))
goto unshin;
update_usb_stats(bitforce);
mutex_init(&bitforce->device_mutex);
return true;
unshin:
usb_uninit(bitforce);
shin:
free(bitforce->device_path);
if (bitforce->name != blank)
free(bitforce->name);
if (bitforce->drv->copy)
free(bitforce->drv);
free(bitforce);
return false;
}