static bool hfa_get_header(struct cgpu_info *hashfast, struct hf_header *h, uint8_t *computed_crc)
{
int amount, ret, orig_len, len, ofs = 0;
cgtimer_t ts_start;
char buf[512];
char *header;
orig_len = len = sizeof(*h);
/* Read for up to 200ms till we find the first occurrence of HF_PREAMBLE
* though it should be the first byte unless we get woefully out of
* sync. */
cgtimer_time(&ts_start);
do {
cgtimer_t ts_now, ts_diff;
cgtimer_time(&ts_now);
cgtimer_sub(&ts_now, &ts_start, &ts_diff);
if (cgtimer_to_ms(&ts_diff) > 200)
return false;
ret = usb_read(hashfast, buf + ofs, len, &amount, C_HF_GETHEADER);
if (unlikely(ret && ret != LIBUSB_ERROR_TIMEOUT))
return false;
ofs += amount;
header = memchr(buf, HF_PREAMBLE, ofs);
if (header)
len -= ofs - (header - buf);
} while (len);
memcpy(h, header, orig_len);
*computed_crc = hfa_crc8((uint8_t *)h);
return true;
}
static bool gridseed_prepare(struct thr_info *thr)
{
struct cgpu_info *gridseed = thr->cgpu;
GRIDSEED_INFO *info = gridseed->device_data;
info->thr = thr;
mutex_init(&info->lock);
mutex_init(&info->qlock);
info->queued = 0;
info->dev_queue_len = GRIDSEED_MCU_QUEUE_LEN;
info->soft_queue_len = 0;
info->query_qlen = false;
info->needworks = 0;
memset(&info->workqueue, 0, sizeof(struct work *)*GRIDSEED_SOFT_QUEUE_LEN);
cgtimer_time(&info->query_ts);
info->workdone = 0;
if (info->sockltc > 0)
close(info->sockltc);
info->sockltc = -1;
if (pthread_create(&info->th_read, NULL, gridseed_get_results, (void*)gridseed))
quit(1, "Failed to create GridSeed read thread");
if (pthread_create(&info->th_send, NULL, gridseed_send_command, (void*)gridseed))
quit(1, "Failed to create GridSeed send thread");
gridseed_create_proxy(gridseed, info);
gridseed_request_ltc_task(gridseed, info);
applog(LOG_NOTICE, "GridSeed device opened on %s", gridseed->device_path);
return true;
}
static void gridseed_get_queue_length(struct cgpu_info *gridseed, GRIDSEED_INFO *info,
unsigned char *data)
{
uint32_t qlen;
memcpy(&qlen, data+8, 4);
qlen = htole32(qlen);
mutex_lock(&info->qlock);
info->query_qlen = false;
info->dev_queue_len = GRIDSEED_MCU_QUEUE_LEN - qlen;
info->needworks = qlen;
cgtimer_time(&info->query_ts);
mutex_unlock(&info->qlock);
return;
}
static bool gridseed_send_query_cmd(struct cgpu_info *gridseed, GRIDSEED_INFO *info)
{
unsigned char *cmd = "\x55\xaa\xc0\x00\xa0\xa0\xa0\xa0\x00\x00\x00\x00\x01\x00\x00\x00";
cgtimer_t ts_now, ts_res;
bool ret = false;
cgtimer_time(&ts_now);
mutex_lock(&info->qlock);
if (!info->query_qlen) {
cgtimer_sub(&ts_now, &info->query_ts, &ts_res);
#ifndef WIN32
if (ts_res.tv_sec > 0) {
#else
if (ts_res.QuadPart > 10000000) {
#endif
if (gc3355_write_data(gridseed, cmd, 16) == 0) {
info->query_qlen = true;
ret = true;
}
}
}
mutex_unlock(&info->qlock);
return ret;
}
static bool gridseed_send_task(struct cgpu_info *gridseed, GRIDSEED_INFO *info,
struct work *work)
{
unsigned char cmd[52];
memcpy(cmd, "\x55\xaa\x0f\x01", 4);
memcpy(cmd+4, work->midstate, 32);
memcpy(cmd+36, work->data+64, 12);
memcpy(cmd+48, &(work->id), 4);
return (gc3355_write_data(gridseed, cmd, sizeof(cmd)) == 0);
}
static bool gridseed_check_new_task(struct cgpu_info *gridseed, GRIDSEED_INFO *info)
{
cgtimer_t ts_now, ts_res;
bool ret = false;
cgtimer_time(&ts_now);
mutex_lock(&info->qlock);
cgtimer_sub(&ts_now, &info->query_ts, &ts_res);
#ifndef WIN32
if (ts_res.tv_sec > 0 || ts_res.tv_nsec > 350000000) {
#else
if (ts_res.QuadPart > 3500000) {
#endif
info->query_qlen = false;
info->dev_queue_len = 1;
info->needworks = 1;
cgtimer_time(&info->query_ts);
}
mutex_unlock(&info->qlock);
}
/*
* Thread to read response from Miner device
*/
static void *gridseed_get_results(void *userdata)
{
struct cgpu_info *gridseed = (struct cgpu_info *)userdata;
GRIDSEED_INFO *info = gridseed->device_data;
struct thr_info *thr = info->thr;
char threadname[24];
unsigned char readbuf[GRIDSEED_READBUF_SIZE];
int offset = 0, ret;
snprintf(threadname, sizeof(threadname), "GridSeed_Recv/%d", gridseed->device_id);
RenameThread(threadname);
applog(LOG_NOTICE, "GridSeed: recv thread running, %s", threadname);
while(likely(!gridseed->shutdown)) {
unsigned char buf[GRIDSEED_READ_SIZE];
if (offset >= GRIDSEED_READ_SIZE)
gridseed_parse_results(gridseed, info, thr, readbuf, &offset);
if (unlikely(offset + GRIDSEED_READ_SIZE >= GRIDSEED_READBUF_SIZE)) {
applog(LOG_ERR, "Read buffer overflow, resetting %d", gridseed->device_id);
offset = 0;
}
ret = gc3355_get_data(gridseed, buf, sizeof(buf));
if (ret == LIBUSB_ERROR_NO_DEVICE)
gridseed->shutdown = true;
if (unlikely(ret != 0))
continue;
if (opt_debug) {
applog(LOG_DEBUG, "GridSeed: get %d bytes", GRIDSEED_READ_SIZE);
hexdump((uint8_t *)buf, GRIDSEED_READ_SIZE);
}
memcpy(readbuf + offset, buf, GRIDSEED_READ_SIZE);
offset += GRIDSEED_READ_SIZE;
}
return NULL;
}
/*
* Thread to send task and queue length query command to device
*/
static void *gridseed_send_command(void *userdata)
{
struct cgpu_info *gridseed = (struct cgpu_info *)userdata;
GRIDSEED_INFO *info = gridseed->device_data;
char threadname[24];
int i;
snprintf(threadname, sizeof(threadname), "GridSeed_Send/%d", gridseed->device_id);
RenameThread(threadname);
applog(LOG_NOTICE, "GridSeed: send thread running, %s", threadname);
while(likely(!gridseed->shutdown)) {
cgsleep_ms(10);
if (info->usefifo == 0) {
/* mark the first work in queue as complete after several ms */
if (gridseed_check_new_task(gridseed, info))
continue;
} else {
/* send query command to device */
if (gridseed_send_query_cmd(gridseed, info))
continue;
}
/* send task to device */
mutex_lock(&info->qlock);
for(i=0; i<info->soft_queue_len; i++) {
if (info->workqueue[i] && info->workqueue[i]->devflag == false) {
if (gridseed_send_task(gridseed, info, info->workqueue[i])) {
info->workqueue[i]->devflag = true;
break;
}
}
}
mutex_unlock(&info->qlock);
/* recv LTC task and send to device */
gridseed_recv_ltc(gridseed, info);
}
return NULL;
}
/*========== functions for struct device_drv ===========*/
static void gridseed_detect(bool __maybe_unused hotplug)
{
usb_detect(&gridseed_drv, gridseed_detect_one);
}