OpenCL GPU miner
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/*
* 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 <limits.h>
#include <pthread.h>
#include <stdio.h>
#include <strings.h>
#include <sys/time.h>
#include <unistd.h>
#include "config.h"
#include "fpgautils.h"
#include "miner.h"
#define BITFORCE_SLEEP_MS 3000
#define BITFORCE_TIMEOUT_MS 7000
#define BITFORCE_LONG_TIMEOUT_MS 15000
#define BITFORCE_CHECK_INTERVAL_MS 10
#define WORK_CHECK_INTERVAL_MS 50
#define MAX_START_DELAY_US 100000
struct device_api bitforce_api;
#define BFopen(devpath) serial_open(devpath, 0, -1, true)
static void BFgets(char *buf, size_t bufLen, int fd)
{
do
--bufLen;
while (likely(bufLen && read(fd, buf, 1) && (buf++)[0] != '\n'));
buf[0] = '\0';
}
static ssize_t BFwrite(int fd, const void *buf, ssize_t bufLen)
{
if ((bufLen) != write(fd, buf, bufLen))
return 0;
else
return bufLen;
}
#define BFclose(fd) close(fd)
static bool bitforce_detect_one(const char *devpath)
{
int fdDev = BFopen(devpath);
struct cgpu_info *bitforce;
char pdevbuf[0x100];
char *s;
applog(LOG_DEBUG, "BFL: Attempting to open %s", devpath);
if (unlikely(fdDev == -1)) {
applog(LOG_ERR, "BFL: Failed to open %s", devpath);
return false;
}
BFwrite(fdDev, "ZGX", 3);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
if (unlikely(!pdevbuf[0])) {
applog(LOG_ERR, "BFL: Error reading (ZGX)");
return 0;
}
BFclose(fdDev);
if (unlikely(!strstr(pdevbuf, "SHA256"))) {
applog(LOG_ERR, "BFL: Didn't recognise BitForce on %s", devpath);
return false;
}
// We have a real BitForce!
bitforce = calloc(1, sizeof(*bitforce));
bitforce->api = &bitforce_api;
bitforce->device_path = strdup(devpath);
bitforce->deven = DEV_ENABLED;
bitforce->threads = 1;
bitforce->sleep_ms = BITFORCE_SLEEP_MS;
if (likely((!memcmp(pdevbuf, ">>>ID: ", 7)) && (s = strstr(pdevbuf + 3, ">>>")))) {
s[0] = '\0';
bitforce->name = strdup(pdevbuf + 7);
}
mutex_init(&bitforce->device_mutex);
return add_cgpu(bitforce);
}
static char bitforce_detect_auto()
{
return (serial_autodetect_udev (bitforce_detect_one, "BitFORCE*SHA256") ?:
serial_autodetect_devserial(bitforce_detect_one, "BitFORCE_SHA256") ?:
0);
}
static void bitforce_detect()
{
serial_detect_auto(bitforce_api.dname, bitforce_detect_one, bitforce_detect_auto);
}
static void get_bitforce_statline_before(char *buf, struct cgpu_info *bitforce)
{
float gt = bitforce->temp;
if (gt > 0)
tailsprintf(buf, "%5.1fC ", gt);
else
tailsprintf(buf, " ", gt);
tailsprintf(buf, " | ");
}
static bool bitforce_thread_prepare(struct thr_info *thr)
{
struct cgpu_info *bitforce = thr->cgpu;
int fdDev = BFopen(bitforce->device_path);
struct timeval now;
if (unlikely(fdDev == -1)) {
applog(LOG_ERR, "BFL%i: Failed to open %s", bitforce->device_id, bitforce->device_path);
return false;
}
bitforce->device_fd = fdDev;
applog(LOG_INFO, "BFL%i: Opened %s", bitforce->device_id, bitforce->device_path);
gettimeofday(&now, NULL);
get_datestamp(bitforce->init, &now);
return true;
}
static void biforce_clear_buffer(struct cgpu_info *bitforce)
{
int fdDev = bitforce->device_fd;
char pdevbuf[0x100];
int count = 0;
if (!fdDev)
return;
applog(LOG_DEBUG, "BFL%i: Clearing read buffer", bitforce->device_id);
mutex_lock(&bitforce->device_mutex);
do {
pdevbuf[0] = '\0';
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
} while (pdevbuf[0] && (++count < 10));
mutex_unlock(&bitforce->device_mutex);
}
void bitforce_init(struct cgpu_info *bitforce)
{
char *devpath = bitforce->device_path;
int fdDev = bitforce->device_fd;
char pdevbuf[0x100];
char *s;
applog(LOG_WARNING, "BFL%i: Re-initalizing", bitforce->device_id);
biforce_clear_buffer(bitforce);
mutex_lock(&bitforce->device_mutex);
if (fdDev)
BFclose(fdDev);
bitforce->device_fd = 0;
fdDev = BFopen(devpath);
if (unlikely(fdDev == -1)) {
mutex_unlock(&bitforce->device_mutex);
applog(LOG_ERR, "BFL%i: Failed to open %s", bitforce->device_id, devpath);
return;
}
BFwrite(fdDev, "ZGX", 3);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
if (unlikely(!pdevbuf[0])) {
mutex_unlock(&bitforce->device_mutex);
applog(LOG_ERR, "BFL%i: Error reading (ZGX)", bitforce->device_id);
return;
}
if (unlikely(!strstr(pdevbuf, "SHA256"))) {
mutex_unlock(&bitforce->device_mutex);
applog(LOG_ERR, "BFL%i: Didn't recognise BitForce on %s returned: %s", bitforce->device_id, devpath, pdevbuf);
return;
}
if (likely((!memcmp(pdevbuf, ">>>ID: ", 7)) && (s = strstr(pdevbuf + 3, ">>>")))) {
s[0] = '\0';
bitforce->name = strdup(pdevbuf + 7);
}
bitforce->device_fd = fdDev;
bitforce->sleep_ms = BITFORCE_SLEEP_MS;
mutex_unlock(&bitforce->device_mutex);
}
static bool bitforce_get_temp(struct cgpu_info *bitforce)
{
int fdDev = bitforce->device_fd;
char pdevbuf[0x100];
char *s;
if (!fdDev)
return false;
mutex_lock(&bitforce->device_mutex);
BFwrite(fdDev, "ZLX", 3);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
mutex_unlock(&bitforce->device_mutex);
if (unlikely(!pdevbuf[0])) {
applog(LOG_ERR, "BFL%i: Error: Get temp returned empty string", bitforce->device_id);
bitforce->temp = 0;
return false;
}
if ((!strncasecmp(pdevbuf, "TEMP", 4)) && (s = strchr(pdevbuf + 4, ':'))) {
float temp = strtof(s + 1, NULL);
if (temp > 0) {
bitforce->temp = temp;
if (temp > bitforce->cutofftemp) {
applog(LOG_WARNING, "BFL%i: Hit thermal cutoff limit, disabling!", bitforce->device_id);
bitforce->deven = DEV_RECOVER;
bitforce->device_last_not_well = time(NULL);
bitforce->device_not_well_reason = REASON_DEV_THERMAL_CUTOFF;
bitforce->dev_thermal_cutoff_count++;
}
}
}
return true;
}
static bool bitforce_send_work(struct thr_info *thr, struct work *work)
{
unsigned char ob[61] = ">>>>>>>>12345678901234567890123456789012123456789012>>>>>>>>";
struct cgpu_info *bitforce = thr->cgpu;
int fdDev = bitforce->device_fd;
char pdevbuf[0x100];
char *s;
if (!fdDev)
return false;
re_send:
mutex_lock(&bitforce->device_mutex);
BFwrite(fdDev, "ZDX", 3);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
if (!pdevbuf[0] || (pdevbuf[0] == 'B')) {
mutex_unlock(&bitforce->device_mutex);
bitforce->wait_ms += WORK_CHECK_INTERVAL_MS;
usleep(WORK_CHECK_INTERVAL_MS * 1000);
goto re_send;
} else if (unlikely(pdevbuf[0] != 'O' || pdevbuf[1] != 'K')) {
mutex_unlock(&bitforce->device_mutex);
applog(LOG_ERR, "BFL%i: Error: Send work reports: %s", bitforce->device_id, pdevbuf);
return false;
}
memcpy(ob + 8, work->midstate, 32);
memcpy(ob + 8 + 32, work->data + 64, 12);
BFwrite(fdDev, ob, 60);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
mutex_unlock(&bitforce->device_mutex);
if (opt_debug) {
s = bin2hex(ob + 8, 44);
applog(LOG_DEBUG, "BFL%i: block data: %s", bitforce->device_id, s);
free(s);
}
if (unlikely(!pdevbuf[0])) {
applog(LOG_ERR, "BFL%i: Error: Send block data returned empty string", bitforce->device_id);
return false;
}
if (unlikely(pdevbuf[0] != 'O' || pdevbuf[1] != 'K')) {
applog(LOG_ERR, "BFL%i: Error: Send block data reports: %s", bitforce->device_id, pdevbuf);
return false;
}
return true;
}
static uint64_t bitforce_get_result(struct thr_info *thr, struct work *work)
{
unsigned int delay_time_ms = BITFORCE_CHECK_INTERVAL_MS;
struct cgpu_info *bitforce = thr->cgpu;
int fdDev = bitforce->device_fd;
char pdevbuf[0x100];
char *pnoncebuf;
uint32_t nonce;
if (!fdDev)
return 0;
while (bitforce->wait_ms < BITFORCE_LONG_TIMEOUT_MS) {
if (unlikely(thr->work_restart))
return 1;
mutex_lock(&bitforce->device_mutex);
BFwrite(fdDev, "ZFX", 3);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
mutex_unlock(&bitforce->device_mutex);
if (pdevbuf[0] && pdevbuf[0] != 'B') /* BFL does not respond during throttling */
break;
/* if BFL is throttling, no point checking so quickly */
delay_time_ms = (pdevbuf[0] ? BITFORCE_CHECK_INTERVAL_MS : 2*WORK_CHECK_INTERVAL_MS);
usleep(delay_time_ms * 1000);
bitforce->wait_ms += delay_time_ms;
}
if (bitforce->wait_ms >= BITFORCE_TIMEOUT_MS) {
applog(LOG_ERR, "BFL%i: took longer than %dms", bitforce->device_id, BITFORCE_TIMEOUT_MS);
bitforce->device_last_not_well = time(NULL);
bitforce->device_not_well_reason = REASON_DEV_OVER_HEAT;
bitforce->dev_over_heat_count++;
if (!pdevbuf[0]) /* Only return if we got nothing after timeout - there still may be results */
return 1;
} else if (pdevbuf[0] == 'N') {/* Hashing complete (NONCE-FOUND or NO-NONCE) */
/* Simple timing adjustment */
delay_time_ms = bitforce->sleep_ms;
if (bitforce->wait_ms > (bitforce->sleep_ms + BITFORCE_CHECK_INTERVAL_MS))
bitforce->sleep_ms += (unsigned int) ((double) (bitforce->wait_ms - bitforce->sleep_ms) / 1.6);
else if (bitforce->wait_ms == bitforce->sleep_ms)
bitforce->sleep_ms -= WORK_CHECK_INTERVAL_MS;
if (delay_time_ms != bitforce->sleep_ms)
applog(LOG_DEBUG, "BFL%i: Wait time changed to: %d", bitforce->device_id, bitforce->sleep_ms, bitforce->wait_ms);
}
applog(LOG_DEBUG, "BFL%i: waited %dms until %s", bitforce->device_id, bitforce->wait_ms, pdevbuf);
work->blk.nonce = 0xffffffff;
if (pdevbuf[2] == '-')
return 0xffffffff; /* No valid nonce found */
else if (pdevbuf[0] == 'I')
return 1; /* Device idle */
else if (strncasecmp(pdevbuf, "NONCE-FOUND", 11)) {
applog(LOG_WARNING, "BFL%i: Error: Get result reports: %s", bitforce->device_id, pdevbuf);
return 1;
}
pnoncebuf = &pdevbuf[12];
while (1) {
hex2bin((void*)&nonce, pnoncebuf, 4);
#ifndef __BIG_ENDIAN__
nonce = swab32(nonce);
#endif
submit_nonce(thr, work, nonce);
if (pnoncebuf[8] != ',')
break;
pnoncebuf += 9;
}
return 0xffffffff;
}
static void bitforce_shutdown(struct thr_info *thr)
{
struct cgpu_info *bitforce = thr->cgpu;
BFclose(bitforce->device_fd);
bitforce->device_fd = 0;
}
static void biforce_thread_enable(struct thr_info *thr)
{
struct cgpu_info *bitforce = thr->cgpu;
bitforce_init(bitforce);
}
static void ms_to_timeval(unsigned int mstime, struct timeval *ttime)
{
ttime->tv_sec = mstime / 1000;
ttime->tv_usec = mstime * 1000 - (ttime->tv_sec * 1000000);
}
static uint64_t bitforce_scanhash(struct thr_info *thr, struct work *work, uint64_t __maybe_unused max_nonce)
{
struct cgpu_info *bitforce = thr->cgpu;
unsigned int sleep_time;
struct timeval tdiff;
uint64_t ret;
bitforce->wait_ms = 0;
ret = bitforce_send_work(thr, work);
/* Initially wait 2/3 of the average cycle time so we can request more
work before full scan is up */
sleep_time = (2 * bitforce->sleep_ms) / 3;
ms_to_timeval(sleep_time, &tdiff);
if (!restart_wait(&tdiff))
return 1;
bitforce->wait_ms += sleep_time;
queue_request(thr, false);
/* Now wait athe final 1/3rd; no bitforce should be finished by now */
sleep_time = bitforce->sleep_ms - sleep_time;
ms_to_timeval(sleep_time, &tdiff);
if (!restart_wait(&tdiff))
return 1;
bitforce->wait_ms += sleep_time;
if (ret)
ret = bitforce_get_result(thr, work);
if (!ret) {
ret = 1;
applog(LOG_ERR, "BFL%i: Comms error", bitforce->device_id);
bitforce->device_last_not_well = time(NULL);
bitforce->device_not_well_reason = REASON_DEV_COMMS_ERROR;
bitforce->dev_comms_error_count++;
/* empty read buffer */
biforce_clear_buffer(bitforce);
}
return ret;
}
static bool bitforce_get_stats(struct cgpu_info *bitforce)
{
return bitforce_get_temp(bitforce);
}
static bool bitforce_thread_init(struct thr_info *thr)
{
struct cgpu_info *bitforce = thr->cgpu;
unsigned int wait;
/* Pause each new thread a random time between 0-100ms
so the devices aren't making calls all at the same time. */
wait = (rand() * MAX_START_DELAY_US)/RAND_MAX;
applog(LOG_DEBUG, "BFL%i: Delaying start by %dms", bitforce->device_id, wait / 1000);
usleep(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);
return root;
}
struct device_api bitforce_api = {
.dname = "bitforce",
.name = "BFL",
.api_detect = bitforce_detect,
.get_api_stats = bitforce_api_stats,
.reinit_device = bitforce_init,
.get_statline_before = get_bitforce_statline_before,
.get_stats = bitforce_get_stats,
.thread_prepare = bitforce_thread_prepare,
.thread_init = bitforce_thread_init,
.scanhash = bitforce_scanhash,
.thread_shutdown = bitforce_shutdown,
.thread_enable = biforce_thread_enable
};