static void *hfa_read(void *arg)
{
struct thr_info *thr = (struct thr_info *)arg;
struct cgpu_info *hashfast = thr->cgpu;
struct hashfast_info *info = hashfast->device_data;
char threadname[16];
snprintf(threadname, sizeof(threadname), "%d/%sRead", hashfast->device_id, hashfast->drv->name);
RenameThread(threadname);
while (likely(!hashfast->shutdown)) {
char buf[512];
struct hf_header *h = (struct hf_header *)buf;
bool ret = hfa_get_packet(hashfast, h);
if (unlikely(hashfast->usbinfo.nodev))
break;
if (unlikely(!ret))
continue;
switch (h->operation_code) {
case OP_GWQ_STATUS:
hfa_parse_gwq_status(hashfast, info, h);
break;
case OP_DIE_STATUS:
hfa_update_die_status(hashfast, info, h);
break;
case OP_NONCE:
hfa_parse_nonce(thr, hashfast, info, h);
break;
case OP_STATISTICS:
hfa_update_die_statistics(info, h);
break;
case OP_USB_STATS1:
hfa_update_stats1(hashfast, info, h);
break;
case OP_USB_NOTICE:
hfa_parse_notice(hashfast, h);
break;
case OP_PING:
/* Do nothing */
break;
default:
applog(LOG_WARNING, "%s %d: Unhandled operation code %d",
hashfast->drv->name, hashfast->device_id, h->operation_code);
break;
}
/* Make sure we send something to the device at least every 5
* seconds so it knows the driver is still alive for when we
* run out of work. The read thread never blocks so is the
* best place to do this. */
if (time(NULL) - info->last_send > 5)
hfa_send_frame(hashfast, HF_USB_CMD(OP_PING), 0, NULL, 0);
}
applog(LOG_DEBUG, "%s %d: Shutting down read thread", hashfast->drv->name, hashfast->device_id);
return NULL;
}
static void hfa_dfu_boot(struct cgpu_info *hashfast)
{
bool ret;
ret = hfa_send_frame(hashfast, HF_USB_CMD(OP_DFU), 0, NULL, 0);
applog(LOG_WARNING, "HFA %d %03d:%03d DFU Boot %s", hashfast->device_id, hashfast->usbinfo.bus_number,
hashfast->usbinfo.device_address, ret ? "Succeeded" : "Failed");
}
static void hfa_decrease_clock(struct cgpu_info *hashfast, struct hashfast_info *info,
int die)
{
struct hf_die_data *hdd = &info->die_data[die];
uint32_t diebit = 0x00000001ul << die;
uint16_t hdata, decrease = 10;
if (hdd->hash_clock - decrease < HFA_CLOCK_MIN)
decrease = hdd->hash_clock - HFA_CLOCK_MIN;
hdd->hash_clock -= decrease;
applog(LOG_INFO, "%s %d: Die temp above range %.1f, decreasing die %d clock to %d",
hashfast->drv->name, hashfast->device_id, info->die_data[die].temp, die, hdd->hash_clock);
hdata = (WR_MHZ_DECREASE << 12) | decrease;
hfa_send_frame(hashfast, HF_USB_CMD(OP_WORK_RESTART), hdata, (uint8_t *)&diebit, 4);
}
static void hfa_increase_clock(struct cgpu_info *hashfast, struct hashfast_info *info,
int die)
{
struct hf_die_data *hdd = &info->die_data[die];
uint32_t diebit = 0x00000001ul << die;
uint16_t hdata, increase = 10;
if (hdd->hash_clock + increase > info->hash_clock_rate)
increase = info->hash_clock_rate - hdd->hash_clock;
hdd->hash_clock += increase;
applog(LOG_INFO, "%s %d: Die temp below range %.1f, increasing die %d clock to %d",
hashfast->drv->name, hashfast->device_id, info->die_data[die].temp, die, hdd->hash_clock);
hdata = (WR_MHZ_INCREASE << 12) | increase;
hfa_send_frame(hashfast, HF_USB_CMD(OP_WORK_RESTART), hdata, (uint8_t *)&diebit, 4);
}
static int64_t hfa_scanwork(struct thr_info *thr)
{
struct cgpu_info *hashfast = thr->cgpu;
struct hashfast_info *info = hashfast->device_data;
int64_t hashes;
int jobs, ret;
if (unlikely(hashfast->usbinfo.nodev)) {
applog(LOG_WARNING, "HFA %d: device disappeared, disabling",
hashfast->device_id);
return -1;
}
if (unlikely(thr->work_restart)) {
restart:
thr->work_restart = false;
ret = hfa_send_frame(hashfast, HF_USB_CMD(OP_WORK_RESTART), 0, (uint8_t *)NULL, 0);
if (unlikely(!ret)) {
ret = hfa_reset(hashfast, info);
if (unlikely(!ret)) {
applog(LOG_ERR, "HFA %d: Failed to reset after write failure, disabling",
hashfast->device_id);
return -1;
}
}
}
jobs = hfa_jobs(info);
if (!jobs) {
ret = restart_wait(thr, 100);
if (unlikely(!ret))
goto restart;
jobs = hfa_jobs(info);
}
if (jobs) {
applog(LOG_DEBUG, "HFA %d: Sending %d new jobs", hashfast->device_id,
jobs);
}
while (jobs-- > 0) {
struct hf_hash_usb op_hash_data;
struct work *work;
uint64_t intdiff;
int i, sequence;
uint32_t *p;
/* This is a blocking function if there's no work */
work = get_work(thr, thr->id);
/* Assemble the data frame and send the OP_HASH packet */
memcpy(op_hash_data.midstate, work->midstate, sizeof(op_hash_data.midstate));
memcpy(op_hash_data.merkle_residual, work->data + 64, 4);
p = (uint32_t *)(work->data + 64 + 4);
op_hash_data.timestamp = *p++;
op_hash_data.bits = *p++;
op_hash_data.starting_nonce = 0;
op_hash_data.nonce_loops = 0;
op_hash_data.ntime_loops = 0;
/* Set the number of leading zeroes to look for based on diff.
* Diff 1 = 32, Diff 2 = 33, Diff 4 = 34 etc. */
intdiff = (uint64_t)work->device_diff;
for (i = 31; intdiff; i++, intdiff >>= 1);
op_hash_data.search_difficulty = i;
op_hash_data.group = 0;
if ((sequence = info->hash_sequence_head + 1) >= info->num_sequence)
sequence = 0;
ret = hfa_send_frame(hashfast, OP_HASH, sequence, (uint8_t *)&op_hash_data, sizeof(op_hash_data));
if (unlikely(!ret)) {
ret = hfa_reset(hashfast, info);
if (unlikely(!ret)) {
applog(LOG_ERR, "HFA %d: Failed to reset after write failure, disabling",
hashfast->device_id);
return -1;
}
}
mutex_lock(&info->lock);
info->hash_sequence_head = sequence;
info->works[info->hash_sequence_head] = work;
mutex_unlock(&info->lock);
applog(LOG_DEBUG, "HFA %d: OP_HASH sequence %d search_difficulty %d work_difficulty %g",
hashfast->device_id, info->hash_sequence_head, op_hash_data.search_difficulty, work->work_difficulty);
}
mutex_lock(&info->lock);
hashes = info->hash_count;
info->hash_count = 0;
mutex_unlock(&info->lock);
return hashes;
}
static void hfa_send_shutdown(struct cgpu_info *hashfast)
{
hfa_send_frame(hashfast, HF_USB_CMD(OP_USB_SHUTDOWN), 0, NULL, 0);
}
static void hfa_send_shutdown(struct cgpu_info *hashfast)
{
if (hashfast->usbinfo.nodev)
return;
hfa_send_frame(hashfast, HF_USB_CMD(OP_USB_SHUTDOWN), 0, NULL, 0);
}
static int64_t hfa_scanwork(struct thr_info *thr)
{
struct cgpu_info *hashfast = thr->cgpu;
struct hashfast_info *info = hashfast->device_data;
int jobs, ret, cycles = 0;
int64_t hashes;
if (unlikely(hashfast->usbinfo.nodev)) {
applog(LOG_WARNING, "%s %d: device disappeared, disabling",
hashfast->drv->name, hashfast->device_id);
return -1;
}
if (unlikely(last_getwork - hashfast->last_device_valid_work > 60)) {
applog(LOG_WARNING, "%s %d: No valid hashes for over 1 minute, attempting to reset",
hashfast->drv->name, hashfast->device_id);
if (info->hash_clock_rate > HFA_CLOCK_DEFAULT) {
info->hash_clock_rate -= 5;
if (info->hash_clock_rate < opt_hfa_hash_clock)
opt_hfa_hash_clock = info->hash_clock_rate;
applog(LOG_WARNING, "%s %d: Decreasing clock speed to %d with reset",
hashfast->drv->name, hashfast->device_id, info->hash_clock_rate);
}
ret = hfa_reset(hashfast, info);
if (!ret) {
applog(LOG_ERR, "%s %d: Failed to reset after hash failure, disabling",
hashfast->drv->name, hashfast->device_id);
return -1;
}
applog(LOG_NOTICE, "%s %d: Reset successful", hashfast->drv->name,
hashfast->device_id);
}
if (unlikely(thr->work_restart)) {
restart:
info->last_restart = time(NULL);
thr->work_restart = false;
ret = hfa_send_frame(hashfast, HF_USB_CMD(OP_WORK_RESTART), 0, (uint8_t *)NULL, 0);
if (unlikely(!ret)) {
ret = hfa_reset(hashfast, info);
if (unlikely(!ret)) {
applog(LOG_ERR, "%s %d: Failed to reset after write failure, disabling",
hashfast->drv->name, hashfast->device_id);
return -1;
}
}
/* Give a full allotment of jobs after a restart, not waiting
* for the status update telling us how much to give. */
jobs = info->usb_init_base.inflight_target;
} else {
/* Only adjust die clocks if there's no restart since two
* restarts back to back get ignored. */
hfa_temp_clock(hashfast, info);
jobs = hfa_jobs(hashfast, info);
}
/* Wait on restart_wait for up to 0.5 seconds or submit jobs as soon as
* they're required. */
while (!jobs && ++cycles < 5) {
ret = restart_wait(thr, 100);
if (unlikely(!ret))
goto restart;
jobs = hfa_jobs(hashfast, info);
}
if (jobs) {
applog(LOG_DEBUG, "%s %d: Sending %d new jobs", hashfast->drv->name, hashfast->device_id,
jobs);
}
while (jobs-- > 0) {
struct hf_hash_usb op_hash_data;
struct work *work;
uint64_t intdiff;
int i, sequence;
uint32_t *p;
/* This is a blocking function if there's no work */
work = get_work(thr, thr->id);
/* Assemble the data frame and send the OP_HASH packet */
memcpy(op_hash_data.midstate, work->midstate, sizeof(op_hash_data.midstate));
memcpy(op_hash_data.merkle_residual, work->data + 64, 4);
p = (uint32_t *)(work->data + 64 + 4);
op_hash_data.timestamp = *p++;
op_hash_data.bits = *p++;
op_hash_data.starting_nonce = 0;
op_hash_data.nonce_loops = 0;
op_hash_data.ntime_loops = 0;
/* Set the number of leading zeroes to look for based on diff.
* Diff 1 = 32, Diff 2 = 33, Diff 4 = 34 etc. */
intdiff = (uint64_t)work->device_diff;
for (i = 31; intdiff; i++, intdiff >>= 1);
op_hash_data.search_difficulty = i;
op_hash_data.group = 0;
if ((sequence = info->hash_sequence_head + 1) >= info->num_sequence)
sequence = 0;
ret = hfa_send_frame(hashfast, OP_HASH, sequence, (uint8_t *)&op_hash_data, sizeof(op_hash_data));
if (unlikely(!ret)) {
ret = hfa_reset(hashfast, info);
if (unlikely(!ret)) {
applog(LOG_ERR, "%s %d: Failed to reset after write failure, disabling",
hashfast->drv->name, hashfast->device_id);
return -1;
}
}
mutex_lock(&info->lock);
info->hash_sequence_head = sequence;
info->works[info->hash_sequence_head] = work;
mutex_unlock(&info->lock);
applog(LOG_DEBUG, "%s %d: OP_HASH sequence %d search_difficulty %d work_difficulty %g",
hashfast->drv->name, hashfast->device_id, info->hash_sequence_head,
op_hash_data.search_difficulty, work->work_difficulty);
}
/* Only count 2/3 of the hashes to smooth out the hashrate for cycles
* that have no hashes added. */
mutex_lock(&info->lock);
hashes = info->hash_count / 3 * 2;
info->calc_hashes += hashes;
info->hash_count -= hashes;
mutex_unlock(&info->lock);
return hashes;
}
