/*
* Copyright 2012-2013 Andrew Smith
* Copyright 2012 Luke Dashjr
* Copyright 2012 Con Kolivas
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 3 of the License, or (at your option)
* any later version. See COPYING for more details.
*/
#include "config.h"
#include <limits.h>
#include <pthread.h>
#include <stdint.h>
#include <stdio.h>
#include <strings.h>
#include <sys/time.h>
#include <unistd.h>
#include "compat.h"
#include "miner.h"
#include "usbutils.h"
#include "util.h"
#ifdef WIN32
#include <windows.h>
#endif /* WIN32 */
#define BITFORCE_IDENTIFY "ZGX"
#define BITFORCE_IDENTIFY_LEN (sizeof(BITFORCE_IDENTIFY)-1)
#define BITFORCE_FLASH "ZMX"
#define BITFORCE_FLASH_LEN (sizeof(BITFORCE_FLASH)-1)
#define BITFORCE_TEMPERATURE "ZLX"
#define BITFORCE_TEMPERATURE_LEN (sizeof(BITFORCE_TEMPERATURE)-1)
#define BITFORCE_SENDRANGE "ZPX"
#define BITFORCE_SENDRANGE_LEN (sizeof(BITFORCE_SENDRANGE)-1)
#define BITFORCE_SENDWORK "ZDX"
#define BITFORCE_SENDWORK_LEN (sizeof(BITFORCE_SENDWORK)-1)
#define BITFORCE_WORKSTATUS "ZFX"
#define BITFORCE_WORKSTATUS_LEN (sizeof(BITFORCE_WORKSTATUS)-1)
// Either of Nonce or No-nonce start with:
#define BITFORCE_EITHER "N"
#define BITFORCE_EITHER_LEN 1
#define BITFORCE_NONCE "NONCE-FOUND"
#define BITFORCE_NONCE_LEN (sizeof(BITFORCE_NONCE)-1)
#define BITFORCE_NO_NONCE "NO-NONCE"
#define BITFORCE_NO_NONCE_MATCH 3
#define BITFORCE_IDLE "IDLE"
#define BITFORCE_IDLE_MATCH 1
#define BITFORCE_SLEEP_MS 500
#define BITFORCE_TIMEOUT_S 7
#define BITFORCE_TIMEOUT_MS (BITFORCE_TIMEOUT_S * 1000)
#define BITFORCE_LONG_TIMEOUT_S 30
#define BITFORCE_LONG_TIMEOUT_MS (BITFORCE_LONG_TIMEOUT_S * 1000)
#define BITFORCE_CHECK_INTERVAL_MS 10
#define WORK_CHECK_INTERVAL_MS 50
#define MAX_START_DELAY_MS 100
#define tv_to_ms(tval) (tval.tv_sec * 1000 + tval.tv_usec / 1000)
#define TIME_AVG_CONSTANT 8
#define KNAME_WORK "full work"
#define KNAME_RANGE "nonce range"
#define BITFORCE_BUFSIZ (0x200)
// If initialisation fails the first time,
// sleep this amount (ms) and try again
#define REINIT_TIME_FIRST_MS 100
// Max ms per sleep
#define REINIT_TIME_MAX_MS 800
// Keep trying up to this many us
#define REINIT_TIME_MAX 3000000
static const char *blank = "";
static void bitforce_initialise(struct cgpu_info *bitforce, bool lock)
{
int err, interface;
if (lock)
mutex_lock(&bitforce->device_mutex);
if (bitforce->usbinfo.nodev)
goto failed;
interface = usb_interface(bitforce);
// Reset
err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_RESET,
FTDI_VALUE_RESET, interface, C_RESET);
if (opt_debug)
applog(LOG_DEBUG, "%s%i: reset got err %d",
bitforce->drv->name, bitforce->device_id, err);
if (bitforce->usbinfo.nodev)
goto failed;
// Set data control
err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_DATA,
FTDI_VALUE_DATA_BFL, interface, C_SETDATA);
if (opt_debug)
applog(LOG_DEBUG, "%s%i: setdata got err %d",
bitforce->drv->name, bitforce->device_id, err);
if (bitforce->usbinfo.nodev)
goto failed;
// Set the baud
err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_BAUD, FTDI_VALUE_BAUD_BFL,
(FTDI_INDEX_BAUD_BFL & 0xff00) | interface,
C_SETBAUD);
if (opt_debug)
applog(LOG_DEBUG, "%s%i: setbaud got err %d",
bitforce->drv->name, bitforce->device_id, err);
if (bitforce->usbinfo.nodev)
goto failed;
// Set Flow Control
err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_FLOW,
FTDI_VALUE_FLOW, interface, C_SETFLOW);
if (opt_debug)
applog(LOG_DEBUG, "%s%i: setflowctrl got err %d",
bitforce->drv->name, bitforce->device_id, err);
if (bitforce->usbinfo.nodev)
goto failed;
// Set Modem Control
err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_MODEM,
FTDI_VALUE_MODEM, interface, C_SETMODEM);
if (opt_debug)
applog(LOG_DEBUG, "%s%i: setmodemctrl got err %d",
bitforce->drv->name, bitforce->device_id, err);
if (bitforce->usbinfo.nodev)
goto failed;
// Clear any sent data
err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_RESET,
FTDI_VALUE_PURGE_TX, interface, C_PURGETX);
if (opt_debug)
applog(LOG_DEBUG, "%s%i: purgetx got err %d",
bitforce->drv->name, bitforce->device_id, err);
if (bitforce->usbinfo.nodev)
goto failed;
// Clear any received data
err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_RESET,
FTDI_VALUE_PURGE_RX, interface, C_PURGERX);
if (opt_debug)
applog(LOG_DEBUG, "%s%i: purgerx got err %d",
bitforce->drv->name, bitforce->device_id, err);
failed:
if (lock)
mutex_unlock(&bitforce->device_mutex);
}
static bool bitforce_detect_one(struct libusb_device *dev, struct usb_find_devices *found)
{
char buf[BITFORCE_BUFSIZ+1];
int err, amount;
char *s;
struct timeval init_start, init_now;
int init_sleep, init_count;
bool ident_first;
struct cgpu_info *bitforce = usb_alloc_cgpu(&bitforce_drv, 1);
if (!usb_init(bitforce, dev, found))
goto shin;
// 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;
cgtime(&init_start);
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, bitforce->device_path, amount, err);
goto unshin;
}
if ((err = usb_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_GETIDENTIFY)) < 0 || amount < 1) {
init_count++;
cgtime(&init_now);
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, bitforce->device_path, amount, err);
}
cgsleep_ms(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, bitforce->device_path, init_count, tdiff(&init_now, &init_start));
if (err < 0) {
applog(LOG_ERR, "%s detect (%s) error identify reply (%d:%d)",
bitforce->drv->dname, bitforce->device_path, amount, err);
} else {
applog(LOG_ERR, "%s detect (%s) empty identify reply (%d)",
bitforce->drv->dname, bitforce->device_path, 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, bitforce->device_path, buf);
ident_first = false;
goto retry;
}
applog(LOG_ERR, "%s detect (%s) didn't recognise '%s' on 2nd attempt",
bitforce->drv->dname, bitforce->device_path, buf);
goto unshin;
}
if (strstr(buf, "SHA256 SC")) {
#ifdef USE_BFLSC
applog(LOG_DEBUG, "SC device detected, will defer to BFLSC driver");
#else
applog(LOG_WARNING, "SC device detected but no BFLSC support compiled in!");
#endif
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, bitforce->device_path, 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;
}
if (!add_cgpu(bitforce))
goto unshin;
update_usb_stats(bitforce);
mutex_init(&bitforce->device_mutex);
return true;
unshin:
usb_uninit(bitforce);
shin:
if (bitforce->name != blank) {
free(bitforce->name);
bitforce->name = NULL;
}
bitforce = usb_free_cgpu(bitforce);
return false;
}
static void bitforce_detect(bool __maybe_unused hotplug)
{
usb_detect(&bitforce_drv, bitforce_detect_one);
}
static void get_bitforce_statline_before(char *buf, size_t bufsiz, struct cgpu_info *bitforce)
{
float gt = bitforce->temp;
if (gt > 0)
tailsprintf(buf, bufsiz, "%5.1fC ", gt);
else
tailsprintf(buf, bufsiz, " ");
tailsprintf(buf, bufsiz, " | ");
}
static bool bitforce_thread_prepare(__maybe_unused struct thr_info *thr)
{
// struct cgpu_info *bitforce = thr->cgpu;
return true;
}
static void bitforce_flash_led(struct cgpu_info *bitforce)
{
int err, amount;
/* Do not try to flash the led if we're polling for a result to
* minimise the chance of interleaved results */
if (bitforce->polling)
return;
/* It is not critical flashing the led so don't get stuck if we
* can't grab the mutex now */
if (mutex_trylock(&bitforce->device_mutex))
return;
if ((err = usb_write(bitforce, BITFORCE_FLASH, BITFORCE_FLASH_LEN, &amount, C_REQUESTFLASH)) < 0 || amount != BITFORCE_FLASH_LEN) {
applog(LOG_ERR, "%s%i: flash request failed (%d:%d)",
bitforce->drv->name, bitforce->device_id, amount, err);
} else {
/* However, this stops anything else getting a reply
* So best to delay any other access to the BFL */
cgsleep_ms(4000);
}
/* Once we've tried - don't do it until told to again */
bitforce->flash_led = false;
mutex_unlock(&bitforce->device_mutex);
return; // nothing is returned by the BFL
}
static bool bitforce_get_temp(struct cgpu_info *bitforce)
{
char buf[BITFORCE_BUFSIZ+1];
int err, amount;
char *s;
// Device is gone
if (bitforce->usbinfo.nodev)
return false;
/* 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_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_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_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);
cgsleep_ms(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->nonce = bitforce->nonces = 0xffffffff;
len = 60;
} else {
uint32_t *nonce;
nonce = (uint32_t *)(ob + 8 + 32 + 12);
*nonce = htobe32(work->nonce);
nonce = (uint32_t *)(ob + 8 + 32 + 12 + 4);
/* Split work up into 1/5th nonce ranges */
bitforce->nonces = 0x33333332;
*nonce = htobe32(work->nonce + bitforce->nonces);
work->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_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;
}
cgtime(&bitforce->work_start_tv);
return true;
}
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);
cgsleep_ms(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->nonce ||
(work->nonce > 0 && nonce < work->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->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 void bitforce_shutdown(__maybe_unused struct thr_info *thr)
{
// struct cgpu_info *bitforce = thr->cgpu;
}
static void biforce_thread_enable(struct thr_info *thr)
{
struct cgpu_info *bitforce = thr->cgpu;
bitforce_initialise(bitforce, true);
}
static int64_t bitforce_scanhash(struct thr_info *thr, struct work *work, int64_t __maybe_unused max_nonce)
{
struct cgpu_info *bitforce = thr->cgpu;
bool send_ret;
int64_t ret;
// Device is gone
if (bitforce->usbinfo.nodev)
return -1;
send_ret = bitforce_send_work(thr, work);
if (!restart_wait(thr, bitforce->sleep_ms))
return 0;
bitforce->wait_ms = bitforce->sleep_ms;
if (send_ret) {
bitforce->polling = true;
ret = bitforce_get_result(thr, work);
bitforce->polling = false;
} else
ret = -1;
if (ret == -1) {
ret = 0;
applog(LOG_ERR, "%s%i: Comms error", bitforce->drv->name, bitforce->device_id);
dev_error(bitforce, REASON_DEV_COMMS_ERROR);
bitforce->hw_errors++;
/* empty read buffer */
bitforce_initialise(bitforce, true);
}
return ret;
}
static bool bitforce_get_stats(struct cgpu_info *bitforce)
{
return bitforce_get_temp(bitforce);
}
static void bitforce_identify(struct cgpu_info *bitforce)
{
bitforce->flash_led = true;
}
static bool bitforce_thread_init(struct thr_info *thr)
{
struct cgpu_info *bitforce = thr->cgpu;
unsigned int wait;
/* Pause each new thread at least 100ms between initialising
* so the devices aren't making calls all at the same time. */
wait = thr->id * MAX_START_DELAY_MS;
applog(LOG_DEBUG, "%s%d: Delaying start by %dms",
bitforce->drv->name, bitforce->device_id, wait / 1000);
cgsleep_ms(wait);
return true;
}
static struct api_data *bitforce_api_stats(struct cgpu_info *cgpu)
{
struct api_data *root = NULL;
// Warning, access to these is not locked - but we don't really
// care since hashing performance is way more important than
// locking access to displaying API debug 'stats'
// If locking becomes an issue for any of them, use copy_data=true also
root = api_add_uint(root, "Sleep Time", &(cgpu->sleep_ms), false);
root = api_add_uint(root, "Avg Wait", &(cgpu->avg_wait_d), false);
return root;
}
struct device_drv bitforce_drv = {
.drv_id = DRIVER_bitforce,
.dname = "BitForce",
.name = "BFL",
.drv_detect = bitforce_detect,
.get_api_stats = bitforce_api_stats,
.get_statline_before = get_bitforce_statline_before,
.get_stats = bitforce_get_stats,
.identify_device = bitforce_identify,
.thread_prepare = bitforce_thread_prepare,
.thread_init = bitforce_thread_init,
.scanhash = bitforce_scanhash,
.thread_shutdown = bitforce_shutdown,
.thread_enable = biforce_thread_enable
};
