/*
* Copyright 2012 Luke Dashjr
*
* 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 2 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 <sys/time.h>
#include <sys/types.h>
#include <dirent.h>
#ifndef WIN32
#include <termios.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifndef O_CLOEXEC
#define O_CLOEXEC 0
#endif
#else
#include <windows.h>
#include <io.h>
#endif
#include <unistd.h>
#include "elist.h"
#include "miner.h"
struct device_api bitforce_api;
#ifdef WIN32
static int BFopen(const char *devpath)
{
HANDLE hSerial = CreateFile(devpath, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (unlikely(hSerial == INVALID_HANDLE_VALUE))
return -1;
return _open_osfhandle((LONG)hSerial, 0);
}
#else
static int BFopen(const char *devpath)
{
return open(devpath, O_CLOEXEC | O_NOCTTY);
}
#endif
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 void BFwrite(int fd, const void *buf, size_t bufLen)
{
ssize_t ret = write(fd, buf, bufLen);
if (unlikely(ret != bufLen))
quit(1, "BFwrite failed");
}
#define BFclose(fd) close(fd)
static bool bitforce_detect_one(const char *devpath)
{
char pdevbuf[0x100];
int i = 0;
if (total_devices == MAX_DEVICES)
return false;
int fdDev = BFopen(devpath);
if (unlikely(fdDev == -1))
{
applog(LOG_DEBUG, "BitForce Detect: Failed to open %s", devpath);
return false;
}
BFwrite(fdDev, "ZGX", 3);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
if (unlikely(!pdevbuf[0]))
{
applog(LOG_ERR, "Error reading from BitForce (ZGX)");
return 0;
}
BFclose(fdDev);
if (unlikely(!strstr(pdevbuf, "SHA256")))
{
applog(LOG_DEBUG, "BitForce Detect: Didn't recognise BitForce on %s", devpath);
return false;
}
// We have a real BitForce!
struct cgpu_info *bitforce;
bitforce = calloc(1, sizeof(*bitforce));
devices[total_devices++] = bitforce;
bitforce->api = &bitforce_api;
bitforce->device_id = i++;
bitforce->device_path = strdup(devpath);
bitforce->enabled = true;
bitforce->threads = 1;
return true;
}
static void bitforce_detect_auto()
{
#ifndef WIN32
DIR *D;
struct dirent *de;
const char udevdir[] = "/dev/serial/by-id";
char devpath[sizeof(udevdir) + 1 + NAME_MAX];
char *devfile = devpath + sizeof(udevdir);
D = opendir(udevdir);
if (!D)
return;
memcpy(devpath, udevdir, sizeof(udevdir) - 1);
devpath[sizeof(udevdir) - 1] = '/';
while ( (de = readdir(D)) ) {
if (!strstr(de->d_name, "BitFORCE_SHA256"))
continue;
strcpy(devfile, de->d_name);
bitforce_detect_one(devpath);
}
closedir(D);
#endif
}
static void bitforce_detect()
{
struct string_elist *iter, *tmp;
list_for_each_entry_safe(iter, tmp, &scan_devices, list) {
if (bitforce_detect_one(iter->string))
string_elist_del(iter);
}
bitforce_detect_auto();
}
static bool bitforce_thread_prepare(struct thr_info *thr)
{
struct cgpu_info *bitforce = thr->cgpu;
struct timeval now;
int fdDev = BFopen(bitforce->device_path);
if (unlikely(-1 == fdDev))
{
applog(LOG_ERR, "Failed to open BitForce on %s", bitforce->device_path);
return false;
}
#ifndef WIN32
{
struct termios pattr;
tcgetattr(fdDev, &pattr);
pattr.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
pattr.c_oflag &= ~OPOST;
pattr.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
pattr.c_cflag &= ~(CSIZE | PARENB);
pattr.c_cflag |= CS8;
tcsetattr(fdDev, TCSANOW, &pattr);
}
#endif
bitforce->device_fd = fdDev;
applog(LOG_INFO, "Opened BitForce on %s", bitforce->device_path);
gettimeofday(&now, NULL);
get_datestamp(bitforce->init, &now);
return true;
}
static uint64_t bitforce_scanhash(struct thr_info *thr, struct work *work, uint64_t max_nonce)
{
struct cgpu_info *bitforce = thr->cgpu;
int fdDev = bitforce->device_fd;
char pdevbuf[0x100];
unsigned char ob[61] = ">>>>>>>>12345678901234567890123456789012123456789012>>>>>>>>";
int i;
char *pnoncebuf;
uint32_t nonce;
BFwrite(fdDev, "ZDX", 3);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
if (unlikely(!pdevbuf[0])) {
applog(LOG_ERR, "Error reading from BitForce (ZDX)");
return 0;
}
if (unlikely(pdevbuf[0] != 'O' || pdevbuf[1] != 'K'))
{
applog(LOG_ERR, "BitForce ZDX reports: %s", pdevbuf);
return 0;
}
memcpy(ob + 8, work->midstate, 32);
memcpy(ob + 8 + 32, work->data + 64, 12);
BFwrite(fdDev, ob, 60);
applog(LOG_DEBUG, "BitForce block data: %s", bin2hex(ob + 8, 44));
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
if (unlikely(!pdevbuf[0]))
{
applog(LOG_ERR, "Error reading from BitForce (block data)");
return 0;
}
if (unlikely(pdevbuf[0] != 'O' || pdevbuf[1] != 'K'))
{
applog(LOG_ERR, "BitForce block data reports: %s", pdevbuf);
return 0;
}
usleep(4500000);
i = 4500;
while (1) {
BFwrite(fdDev, "ZFX", 3);
BFgets(pdevbuf, sizeof(pdevbuf), fdDev);
if (unlikely(!pdevbuf[0]))
{
applog(LOG_ERR, "Error reading from BitForce (ZFX)");
return 0;
}
if (pdevbuf[0] != 'B')
break;
usleep(10000);
i += 10;
}
applog(LOG_DEBUG, "BitForce waited %dms until %s\n", i, pdevbuf);
work->blk.nonce = 0xffffffff;
if (pdevbuf[2] == '-')
return 0xffffffff;
else
if (strncasecmp(pdevbuf, "NONCE-FOUND", 11)) {
applog(LOG_ERR, "BitForce result reports: %s", pdevbuf);
return 0;
}
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;
}
struct device_api bitforce_api = {
.name = "BFL",
.api_detect = bitforce_detect,
// .reinit_device = TODO
.thread_prepare = bitforce_thread_prepare,
.scanhash = bitforce_scanhash,
};
