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driver-icarus.c
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driver-icarus.c
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/*
* Copyright 2012-2013 Luke Dashjr
* Copyright 2012 Xiangfu
* Copyright 2012 Andrew Smith
*
* 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.
*/
/*
* Those code should be works fine with V2 and V3 bitstream of Icarus.
* Operation:
* No detection implement.
* Input: 64B = 32B midstate + 20B fill bytes + last 12 bytes of block head.
* Return: send back 32bits immediately when Icarus found a valid nonce.
* no query protocol implemented here, if no data send back in ~11.3
* seconds (full cover time on 32bit nonce range by 380MH/s speed)
* just send another work.
* Notice:
* 1. Icarus will start calculate when you push a work to them, even they
* are busy.
* 2. The 2 FPGAs on Icarus will distribute the job, one will calculate the
* 0 ~ 7FFFFFFF, another one will cover the 80000000 ~ FFFFFFFF.
* 3. It's possible for 2 FPGAs both find valid nonce in the meantime, the 2
* valid nonce will all be send back.
* 4. Icarus will stop work when: a valid nonce has been found or 32 bits
* nonce range is completely calculated.
*/
#include "config.h"
#include "miner.h"
#include <limits.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <dirent.h>
#include <unistd.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
#ifdef HAVE_SYS_EPOLL_H
#include <sys/epoll.h>
#define HAVE_EPOLL
#endif
#include "compat.h"
#include "dynclock.h"
#include "icarus-common.h"
#include "lowl-vcom.h"
// The serial I/O speed - Linux uses a define 'B115200' in bits/termios.h
#define ICARUS_IO_SPEED 115200
// The size of a successful nonce read
#define ICARUS_READ_SIZE 4
// Ensure the sizes are correct for the Serial read
#if (ICARUS_READ_SIZE != 4)
#error ICARUS_READ_SIZE must be 4
#endif
#define ASSERT1(condition) __maybe_unused static char sizeof_uint32_t_must_be_4[(condition)?1:-1]
ASSERT1(sizeof(uint32_t) == 4);
#define ICARUS_READ_TIME(baud) ((double)ICARUS_READ_SIZE * (double)8.0 / (double)(baud))
// Defined in deciseconds
// There's no need to have this bigger, since the overhead/latency of extra work
// is pretty small once you get beyond a 10s nonce range time and 10s also
// means that nothing slower than 429MH/s can go idle so most icarus devices
// will always mine without idling
#define ICARUS_READ_COUNT_LIMIT_MAX 100
// In timing mode: Default starting value until an estimate can be obtained
// 5 seconds allows for up to a ~840MH/s device
#define ICARUS_READ_COUNT_TIMING (5 * TIME_FACTOR)
// For a standard Icarus REV3
#define ICARUS_REV3_HASH_TIME 0.00000000264083
// Icarus Rev3 doesn't send a completion message when it finishes
// the full nonce range, so to avoid being idle we must abort the
// work (by starting a new work) shortly before it finishes
//
// Thus we need to estimate 2 things:
// 1) How many hashes were done if the work was aborted
// 2) How high can the timeout be before the Icarus is idle,
// to minimise the number of work started
// We set 2) to 'the calculated estimate' - 1
// to ensure the estimate ends before idle
//
// The simple calculation used is:
// Tn = Total time in seconds to calculate n hashes
// Hs = seconds per hash
// Xn = number of hashes
// W = code overhead per work
//
// Rough but reasonable estimate:
// Tn = Hs * Xn + W (of the form y = mx + b)
//
// Thus:
// Line of best fit (using least squares)
//
// Hs = (n*Sum(XiTi)-Sum(Xi)*Sum(Ti))/(n*Sum(Xi^2)-Sum(Xi)^2)
// W = Sum(Ti)/n - (Hs*Sum(Xi))/n
//
// N.B. W is less when aborting work since we aren't waiting for the reply
// to be transferred back (ICARUS_READ_TIME)
// Calculating the hashes aborted at n seconds is thus just n/Hs
// (though this is still a slight overestimate due to code delays)
//
// Both below must be exceeded to complete a set of data
// Minimum how long after the first, the last data point must be
#define HISTORY_SEC 60
// Minimum how many points a single ICARUS_HISTORY should have
#define MIN_DATA_COUNT 5
// The value above used is doubled each history until it exceeds:
#define MAX_MIN_DATA_COUNT 100
#if (TIME_FACTOR != 10)
#error TIME_FACTOR must be 10
#endif
static struct timeval history_sec = { HISTORY_SEC, 0 };
static const char *MODE_DEFAULT_STR = "default";
static const char *MODE_SHORT_STR = "short";
static const char *MODE_SHORT_STREQ = "short=";
static const char *MODE_LONG_STR = "long";
static const char *MODE_LONG_STREQ = "long=";
static const char *MODE_VALUE_STR = "value";
static const char *MODE_UNKNOWN_STR = "unknown";
#define END_CONDITION 0x0000ffff
#define DEFAULT_DETECT_THRESHOLD 1
// Looking for options in --icarus-timing and --icarus-options:
//
// Code increments this each time we start to look at a device
// However, this means that if other devices are checked by
// the Icarus code (e.g. BFL) they will count in the option offset
//
// This, however, is deterministic so that's OK
//
// If we were to increment after successfully finding an Icarus
// that would be random since an Icarus may fail and thus we'd
// not be able to predict the option order
//
// This also assumes that serial_detect() checks them sequentially
// and in the order specified on the command line
//
static int option_offset = -1;
BFG_REGISTER_DRIVER(icarus_drv)
extern void convert_icarus_to_cairnsmore(struct cgpu_info *);
static void rev(unsigned char *s, size_t l)
{
size_t i, j;
unsigned char t;
for (i = 0, j = l - 1; i < j; i++, j--) {
t = s[i];
s[i] = s[j];
s[j] = t;
}
}
#define icarus_open2(devpath, baud, purge) serial_open(devpath, baud, ICARUS_READ_FAULT_DECISECONDS, purge)
#define icarus_open(devpath, baud) icarus_open2(devpath, baud, false)
#define ICA_GETS_ERROR -1
#define ICA_GETS_OK 0
#define ICA_GETS_RESTART 1
#define ICA_GETS_TIMEOUT 2
int icarus_gets(unsigned char *buf, int fd, struct timeval *tv_finish, struct thr_info *thr, int read_count)
{
ssize_t ret = 0;
int rc = 0;
int epollfd = -1;
int epoll_timeout = ICARUS_READ_FAULT_DECISECONDS * 100;
int read_amount = ICARUS_READ_SIZE;
bool first = true;
#ifdef HAVE_EPOLL
struct epoll_event ev = {
.events = EPOLLIN,
.data.fd = fd,
};
struct epoll_event evr[2];
if (thr && thr->work_restart_notifier[1] != -1) {
epollfd = epoll_create(2);
if (epollfd != -1) {
if (-1 == epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev)) {
close(epollfd);
epollfd = -1;
}
{
ev.data.fd = thr->work_restart_notifier[0];
if (-1 == epoll_ctl(epollfd, EPOLL_CTL_ADD, thr->work_restart_notifier[0], &ev))
applog(LOG_ERR, "Icarus: Error adding work restart fd to epoll");
else
{
epoll_timeout *= read_count;
read_count = 1;
}
}
}
else
applog(LOG_ERR, "Icarus: Error creating epoll");
}
#endif
// Read reply 1 byte at a time to get earliest tv_finish
while (true) {
#ifdef HAVE_EPOLL
if (epollfd != -1 && (ret = epoll_wait(epollfd, evr, 2, epoll_timeout)) != -1)
{
if (ret == 1 && evr[0].data.fd == fd)
ret = read(fd, buf, 1);
else
{
if (ret)
notifier_read(thr->work_restart_notifier);
ret = 0;
}
}
else
#endif
ret = read(fd, buf, 1);
if (ret < 0)
return ICA_GETS_ERROR;
if (first)
cgtime(tv_finish);
if (ret >= read_amount)
{
if (epollfd != -1)
close(epollfd);
return ICA_GETS_OK;
}
if (ret > 0) {
buf += ret;
read_amount -= ret;
first = false;
continue;
}
if (thr && thr->work_restart) {
if (epollfd != -1)
close(epollfd);
applog(LOG_DEBUG, "Icarus Read: Interrupted by work restart");
return ICA_GETS_RESTART;
}
rc++;
if (rc >= read_count) {
if (epollfd != -1)
close(epollfd);
applog(LOG_DEBUG, "Icarus Read: No data in %.2f seconds",
(float)rc * epoll_timeout / 1000.);
return ICA_GETS_TIMEOUT;
}
}
}
static int icarus_write(int fd, const void *buf, size_t bufLen)
{
size_t ret;
if (unlikely(fd == -1))
return 1;
ret = write(fd, buf, bufLen);
if (unlikely(ret != bufLen))
return 1;
return 0;
}
#define icarus_close(fd) serial_close(fd)
static void do_icarus_close(struct thr_info *thr)
{
struct cgpu_info *icarus = thr->cgpu;
const int fd = icarus->device_fd;
if (fd == -1)
return;
icarus_close(fd);
icarus->device_fd = -1;
}
static const char *timing_mode_str(enum timing_mode timing_mode)
{
switch(timing_mode) {
case MODE_DEFAULT:
return MODE_DEFAULT_STR;
case MODE_SHORT:
return MODE_SHORT_STR;
case MODE_LONG:
return MODE_LONG_STR;
case MODE_VALUE:
return MODE_VALUE_STR;
default:
return MODE_UNKNOWN_STR;
}
}
static void set_timing_mode(int this_option_offset, struct cgpu_info *icarus)
{
struct ICARUS_INFO *info = icarus->device_data;
double Hs;
char buf[BUFSIZ+1];
char *ptr, *comma, *eq;
size_t max;
int i;
if (opt_icarus_timing == NULL)
buf[0] = '\0';
else {
ptr = opt_icarus_timing;
for (i = 0; i < this_option_offset; i++) {
comma = strchr(ptr, ',');
if (comma == NULL)
break;
ptr = comma + 1;
}
comma = strchr(ptr, ',');
if (comma == NULL)
max = strlen(ptr);
else
max = comma - ptr;
if (max > BUFSIZ)
max = BUFSIZ;
strncpy(buf, ptr, max);
buf[max] = '\0';
}
info->read_count = 0;
info->read_count_limit = 0; // 0 = no limit
if (strcasecmp(buf, MODE_SHORT_STR) == 0) {
// short
info->read_count = ICARUS_READ_COUNT_TIMING;
info->timing_mode = MODE_SHORT;
info->do_icarus_timing = true;
} else if (strncasecmp(buf, MODE_SHORT_STREQ, strlen(MODE_SHORT_STREQ)) == 0) {
// short=limit
info->read_count = ICARUS_READ_COUNT_TIMING;
info->timing_mode = MODE_SHORT;
info->do_icarus_timing = true;
info->read_count_limit = atoi(&buf[strlen(MODE_SHORT_STREQ)]);
if (info->read_count_limit < 0)
info->read_count_limit = 0;
if (info->read_count_limit > ICARUS_READ_COUNT_LIMIT_MAX)
info->read_count_limit = ICARUS_READ_COUNT_LIMIT_MAX;
} else if (strcasecmp(buf, MODE_LONG_STR) == 0) {
// long
info->read_count = ICARUS_READ_COUNT_TIMING;
info->timing_mode = MODE_LONG;
info->do_icarus_timing = true;
} else if (strncasecmp(buf, MODE_LONG_STREQ, strlen(MODE_LONG_STREQ)) == 0) {
// long=limit
info->read_count = ICARUS_READ_COUNT_TIMING;
info->timing_mode = MODE_LONG;
info->do_icarus_timing = true;
info->read_count_limit = atoi(&buf[strlen(MODE_LONG_STREQ)]);
if (info->read_count_limit < 0)
info->read_count_limit = 0;
if (info->read_count_limit > ICARUS_READ_COUNT_LIMIT_MAX)
info->read_count_limit = ICARUS_READ_COUNT_LIMIT_MAX;
} else if ((Hs = atof(buf)) != 0) {
// ns[=read_count]
info->Hs = Hs / NANOSEC;
info->fullnonce = info->Hs * (((double)0xffffffff) + 1);
if ((eq = strchr(buf, '=')) != NULL)
info->read_count = atoi(eq+1);
if (info->read_count < 1)
info->read_count = (int)(info->fullnonce * TIME_FACTOR) - 1;
if (unlikely(info->read_count < 1))
info->read_count = 1;
info->timing_mode = MODE_VALUE;
info->do_icarus_timing = false;
} else {
// Anything else in buf just uses DEFAULT mode
info->fullnonce = info->Hs * (((double)0xffffffff) + 1);
if ((eq = strchr(buf, '=')) != NULL)
info->read_count = atoi(eq+1);
int def_read_count = ICARUS_READ_COUNT_TIMING;
if (info->timing_mode == MODE_DEFAULT) {
if (icarus->drv == &icarus_drv) {
info->do_default_detection = 0x10;
} else {
def_read_count = (int)(info->fullnonce * TIME_FACTOR) - 1;
}
info->do_icarus_timing = false;
}
if (info->read_count < 1)
info->read_count = def_read_count;
}
info->min_data_count = MIN_DATA_COUNT;
applog(LOG_DEBUG, "%"PRIpreprv": Init: mode=%s read_count=%d limit=%dms Hs=%e",
icarus->proc_repr,
timing_mode_str(info->timing_mode),
info->read_count, info->read_count_limit, info->Hs);
}
static uint32_t mask(int work_division)
{
uint32_t nonce_mask = 0x7fffffff;
// yes we can calculate these, but this way it's easy to see what they are
switch (work_division) {
case 1:
nonce_mask = 0xffffffff;
break;
case 2:
nonce_mask = 0x7fffffff;
break;
case 4:
nonce_mask = 0x3fffffff;
break;
case 8:
nonce_mask = 0x1fffffff;
break;
default:
quit(1, "Invalid2 icarus-options for work_division (%d) must be 1, 2, 4 or 8", work_division);
}
return nonce_mask;
}
static void get_options(int this_option_offset, struct ICARUS_INFO *info)
{
int *baud = &info->baud;
int *work_division = &info->work_division;
int *fpga_count = &info->fpga_count;
char buf[BUFSIZ+1];
char *ptr, *comma, *colon, *colon2;
size_t max;
int i, tmp;
if (opt_icarus_options == NULL)
buf[0] = '\0';
else {
ptr = opt_icarus_options;
for (i = 0; i < this_option_offset; i++) {
comma = strchr(ptr, ',');
if (comma == NULL)
break;
ptr = comma + 1;
}
comma = strchr(ptr, ',');
if (comma == NULL)
max = strlen(ptr);
else
max = comma - ptr;
if (max > BUFSIZ)
max = BUFSIZ;
strncpy(buf, ptr, max);
buf[max] = '\0';
}
if (*buf) {
colon = strchr(buf, ':');
if (colon)
*(colon++) = '\0';
if (*buf) {
tmp = atoi(buf);
if (!valid_baud(*baud = tmp))
quit(1, "Invalid icarus-options for baud (%s)", buf);
}
if (colon && *colon) {
colon2 = strchr(colon, ':');
if (colon2)
*(colon2++) = '\0';
if (*colon) {
info->user_set |= 1;
tmp = atoi(colon);
if (tmp == 1 || tmp == 2 || tmp == 4 || tmp == 8) {
*work_division = tmp;
*fpga_count = tmp; // default to the same
} else {
quit(1, "Invalid icarus-options for work_division (%s) must be 1, 2, 4 or 8", colon);
}
}
if (colon2 && *colon2) {
colon = strchr(colon2, ':');
if (colon)
*(colon++) = '\0';
if (*colon2) {
info->user_set |= 2;
tmp = atoi(colon2);
if (tmp > 0 && tmp <= *work_division)
*fpga_count = tmp;
else {
quit(1, "Invalid icarus-options for fpga_count (%s) must be >0 and <=work_division (%d)", colon2, *work_division);
}
}
if (colon && *colon) {
colon2 = strchr(colon, '-') ?: "";
if (*colon2)
*(colon2++) = '\0';
if (strchr(colon, 'r'))
info->quirk_reopen = 2;
if (strchr(colon2, 'r'))
info->quirk_reopen = 0;
}
}
}
}
}
bool icarus_detect_custom(const char *devpath, struct device_drv *api, struct ICARUS_INFO *info)
{
int this_option_offset = ++option_offset;
struct timeval tv_start, tv_finish;
int fd;
// Block 171874 nonce = (0xa2870100) = 0x000187a2
// N.B. golden_ob MUST take less time to calculate
// than the timeout set in icarus_open()
// This one takes ~0.53ms on Rev3 Icarus
const char golden_ob[] =
"4679ba4ec99876bf4bfe086082b40025"
"4df6c356451471139a3afa71e48f544a"
"00000000000000000000000000000000"
"0000000087320b1a1426674f2fa722ce";
/* NOTE: This gets sent to basically every port specified in --scan-serial,
* even ones that aren't Icarus; be sure they can all handle it, when
* this is changed...
* BitForce: Ignores entirely
* ModMiner: Starts (useless) work, gets back to clean state
*/
const char golden_nonce[] = "000187a2";
unsigned char ob_bin[64], nonce_bin[ICARUS_READ_SIZE];
char nonce_hex[(sizeof(nonce_bin) * 2) + 1];
get_options(this_option_offset, info);
int baud = info->baud;
int work_division = info->work_division;
int fpga_count = info->fpga_count;
applog(LOG_DEBUG, "Icarus Detect: Attempting to open %s", devpath);
fd = icarus_open2(devpath, baud, true);
if (unlikely(fd == -1)) {
applog(LOG_DEBUG, "Icarus Detect: Failed to open %s", devpath);
return false;
}
hex2bin(ob_bin, golden_ob, sizeof(ob_bin));
icarus_write(fd, ob_bin, sizeof(ob_bin));
cgtime(&tv_start);
memset(nonce_bin, 0, sizeof(nonce_bin));
icarus_gets(nonce_bin, fd, &tv_finish, NULL, 1);
icarus_close(fd);
bin2hex(nonce_hex, nonce_bin, sizeof(nonce_bin));
if (strncmp(nonce_hex, golden_nonce, 8)) {
applog(LOG_DEBUG,
"Icarus Detect: "
"Test failed at %s: get %s, should: %s",
devpath, nonce_hex, golden_nonce);
return false;
}
applog(LOG_DEBUG,
"Icarus Detect: "
"Test succeeded at %s: got %s",
devpath, nonce_hex);
if (serial_claim_v(devpath, api))
return false;
/* We have a real Icarus! */
struct cgpu_info *icarus;
icarus = calloc(1, sizeof(struct cgpu_info));
icarus->drv = api;
icarus->device_path = strdup(devpath);
icarus->device_fd = -1;
icarus->threads = 1;
add_cgpu(icarus);
applog(LOG_INFO, "Found %"PRIpreprv" at %s",
icarus->proc_repr,
devpath);
applog(LOG_DEBUG, "%"PRIpreprv": Init: baud=%d work_division=%d fpga_count=%d",
icarus->proc_repr,
baud, work_division, fpga_count);
icarus->device_data = info;
timersub(&tv_finish, &tv_start, &(info->golden_tv));
set_timing_mode(this_option_offset, icarus);
return true;
}
static bool icarus_detect_one(const char *devpath)
{
struct ICARUS_INFO *info = calloc(1, sizeof(struct ICARUS_INFO));
if (unlikely(!info))
quit(1, "Failed to malloc ICARUS_INFO");
// TODO: try some higher speeds with the Icarus and BFL to see
// if they support them and if setting them makes any difference
// N.B. B3000000 doesn't work on Icarus
info->baud = ICARUS_IO_SPEED;
info->quirk_reopen = 1;
info->Hs = ICARUS_REV3_HASH_TIME;
info->timing_mode = MODE_DEFAULT;
if (!icarus_detect_custom(devpath, &icarus_drv, info)) {
free(info);
return false;
}
return true;
}
static
bool icarus_lowl_probe(const struct lowlevel_device_info * const info)
{
return vcom_lowl_probe_wrapper(info, icarus_detect_one);
}
static bool icarus_prepare(struct thr_info *thr)
{
struct cgpu_info *icarus = thr->cgpu;
struct ICARUS_INFO *info = icarus->device_data;
icarus->device_fd = -1;
int fd = icarus_open2(icarus->device_path, info->baud, true);
if (unlikely(-1 == fd)) {
applog(LOG_ERR, "Failed to open Icarus on %s",
icarus->device_path);
return false;
}
icarus->device_fd = fd;
applog(LOG_INFO, "Opened Icarus on %s", icarus->device_path);
struct icarus_state *state;
thr->cgpu_data = state = calloc(1, sizeof(*state));
state->firstrun = true;
#ifdef HAVE_EPOLL
int epollfd = epoll_create(2);
if (epollfd != -1)
{
close(epollfd);
notifier_init(thr->work_restart_notifier);
}
#endif
icarus->status = LIFE_INIT2;
return true;
}
static bool icarus_init(struct thr_info *thr)
{
struct cgpu_info *icarus = thr->cgpu;
struct ICARUS_INFO *info = icarus->device_data;
int fd = icarus->device_fd;
if (!info->work_division)
{
struct timeval tv_finish;
uint32_t res;
applog(LOG_DEBUG, "%"PRIpreprv": Work division not specified - autodetecting", icarus->proc_repr);
// Special packet to probe work_division
unsigned char pkt[64] =
"\x2e\x4c\x8f\x91\xfd\x59\x5d\x2d\x7e\xa2\x0a\xaa\xcb\x64\xa2\xa0"
"\x43\x82\x86\x02\x77\xcf\x26\xb6\xa1\xee\x04\xc5\x6a\x5b\x50\x4a"
"BFGMiner Probe\0\0"
"BFG\0\x64\x61\x01\x1a\xc9\x06\xa9\x51\xfb\x9b\x3c\x73";
icarus_write(fd, pkt, sizeof(pkt));
if (ICA_GETS_OK == icarus_gets((unsigned char*)&res, fd, &tv_finish, NULL, info->read_count))
res = be32toh(res);
else
res = 0;
switch (res) {
case 0x04C0FDB4:
info->work_division = 1;
break;
case 0x82540E46:
info->work_division = 2;
break;
case 0x417C0F36:
info->work_division = 4;
break;
case 0x60C994D5:
info->work_division = 8;
break;
default:
applog(LOG_ERR, "%"PRIpreprv": Work division autodetection failed (assuming 2): got %08x", icarus->proc_repr, res);
info->work_division = 2;
}
applog(LOG_DEBUG, "%"PRIpreprv": Work division autodetection got %08x (=%d)", icarus->proc_repr, res, info->work_division);
}
if (!info->fpga_count)
info->fpga_count = info->work_division;
info->nonce_mask = mask(info->work_division);
return true;
}
static bool icarus_reopen(struct cgpu_info *icarus, struct icarus_state *state, int *fdp)
{
struct ICARUS_INFO *info = icarus->device_data;
// Reopen the serial port to workaround a USB-host-chipset-specific issue with the Icarus's buggy USB-UART
do_icarus_close(icarus->thr[0]);
*fdp = icarus->device_fd = icarus_open(icarus->device_path, info->baud);
if (unlikely(-1 == *fdp)) {
applog(LOG_ERR, "%"PRIpreprv": Failed to reopen on %s", icarus->proc_repr, icarus->device_path);
dev_error(icarus, REASON_DEV_COMMS_ERROR);
state->firstrun = true;
return false;
}
return true;
}
static
bool icarus_job_prepare(struct thr_info *thr, struct work *work, __maybe_unused uint64_t max_nonce)
{
struct cgpu_info * const icarus = thr->cgpu;
struct icarus_state * const state = thr->cgpu_data;
uint8_t * const ob_bin = state->ob_bin;
memcpy(ob_bin, work->midstate, 32);
memcpy(ob_bin + 52, work->data + 64, 12);
if (!(memcmp(&ob_bin[56], "\xff\xff\xff\xff", 4)
|| memcmp(&ob_bin, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 32))) {
// This sequence is used on cairnsmore bitstreams for commands, NEVER send it otherwise
applog(LOG_WARNING, "%"PRIpreprv": Received job attempting to send a command, corrupting it!",
icarus->proc_repr);
ob_bin[56] = 0;
}
rev(ob_bin, 32);
rev(ob_bin + 52, 12);
return true;
}
static bool icarus_job_start(struct thr_info *thr)
{
struct cgpu_info *icarus = thr->cgpu;
struct ICARUS_INFO *info = icarus->device_data;
struct icarus_state *state = thr->cgpu_data;
const uint8_t * const ob_bin = state->ob_bin;
int fd = icarus->device_fd;
int ret;
// Handle dynamic clocking for "subclass" devices
// This needs to run before sending next job, since it hashes the command too
if (info->dclk.freqM && likely(!state->firstrun)) {
dclk_preUpdate(&info->dclk);
dclk_updateFreq(&info->dclk, info->dclk_change_clock_func, thr);
}
cgtime(&state->tv_workstart);
ret = icarus_write(fd, ob_bin, 64);
if (ret) {
do_icarus_close(thr);
applog(LOG_ERR, "%"PRIpreprv": Comms error (werr=%d)", icarus->proc_repr, ret);
dev_error(icarus, REASON_DEV_COMMS_ERROR);
return false; /* This should never happen */
}
if (opt_debug) {
char ob_hex[129];
bin2hex(ob_hex, ob_bin, 64);
applog(LOG_DEBUG, "%"PRIpreprv" sent: %s",
icarus->proc_repr,
ob_hex);
}
return true;
}
static
struct work *icarus_process_worknonce(struct icarus_state *state, uint32_t *nonce)
{
*nonce = be32toh(*nonce);
if (test_nonce(state->last_work, *nonce, false))
return state->last_work;
if (likely(state->last2_work && test_nonce(state->last2_work, *nonce, false)))
return state->last2_work;
return NULL;
}
static
void handle_identify(struct thr_info * const thr, int ret, const bool was_first_run)
{
const struct cgpu_info * const icarus = thr->cgpu;
const struct ICARUS_INFO * const info = icarus->device_data;
struct icarus_state * const state = thr->cgpu_data;
int fd = icarus->device_fd;
struct timeval tv_now;
double delapsed;
uint32_t nonce;
if (fd == -1)
return;
// If identify is requested (block erupters):
// 1. Don't start the next job right away (above)
// 2. Wait for the current job to complete 100%
if (!was_first_run)
{
applog(LOG_DEBUG, "%"PRIpreprv": Identify: Waiting for current job to finish", icarus->proc_repr);
while (true)
{
cgtime(&tv_now);
delapsed = tdiff(&tv_now, &state->tv_workstart);
if (delapsed + 0.1 > info->fullnonce)
break;
// Try to get more nonces (ignoring work restart)
ret = icarus_gets((void *)&nonce, fd, &tv_now, NULL, (info->fullnonce - delapsed) * 10);
if (ret == ICA_GETS_OK)
{
nonce = be32toh(nonce);
submit_nonce(thr, state->last_work, nonce);
}
}
}
else
applog(LOG_DEBUG, "%"PRIpreprv": Identify: Current job should already be finished", icarus->proc_repr);
// 3. Delay 3 more seconds
applog(LOG_DEBUG, "%"PRIpreprv": Identify: Leaving idle for 3 seconds", icarus->proc_repr);
cgsleep_ms(3000);
// Check for work restart in the meantime
if (thr->work_restart)
{
applog(LOG_DEBUG, "%"PRIpreprv": Identify: Work restart requested during delay", icarus->proc_repr);
goto no_job_start;
}
// 4. Start next job
if (!state->firstrun)
{
applog(LOG_DEBUG, "%"PRIpreprv": Identify: Starting next job", icarus->proc_repr);
if (!icarus_job_start(thr))
no_job_start:
state->firstrun = true;
}
state->identify = false;
}
static
void icarus_transition_work(struct icarus_state *state, struct work *work)
{
if (state->last2_work)
free_work(state->last2_work);
state->last2_work = state->last_work;
state->last_work = copy_work(work);
}
static int64_t icarus_scanhash(struct thr_info *thr, struct work *work,
__maybe_unused int64_t max_nonce)
{
struct cgpu_info *icarus;
int fd;
int ret;
struct ICARUS_INFO *info;
uint32_t nonce;
struct work *nonce_work;
int64_t hash_count;
struct timeval tv_start = {.tv_sec=0}, elapsed;
struct timeval tv_history_start, tv_history_finish;
double Ti, Xi;
int i;
bool was_hw_error = false;
bool was_first_run;
struct ICARUS_HISTORY *history0, *history;
int count;
double Hs, W, fullnonce;
int read_count;
bool limited;
int64_t estimate_hashes;
uint32_t values;
int64_t hash_count_range;
elapsed.tv_sec = elapsed.tv_usec = 0;
icarus = thr->cgpu;
struct icarus_state *state = thr->cgpu_data;
was_first_run = state->firstrun;
icarus_job_prepare(thr, work, max_nonce);
// Wait for the previous run's result
fd = icarus->device_fd;
info = icarus->device_data;
if (unlikely(fd == -1) && !icarus_reopen(icarus, state, &fd))
return -1;
if (!state->firstrun) {
if (state->changework)
{
state->changework = false;
ret = ICA_GETS_RESTART;
}
else
{
read_count = info->read_count;
keepwaiting:
/* Icarus will return 4 bytes (ICARUS_READ_SIZE) nonces or nothing */
ret = icarus_gets((void*)&nonce, fd, &state->tv_workfinish, thr, read_count);
switch (ret) {
case ICA_GETS_RESTART:
// The prepared work is invalid, and the current work is abandoned
// Go back to the main loop to get the next work, and stuff
// Returning to the main loop will clear work_restart, so use a flag...
state->changework = true;
return 0;
case ICA_GETS_ERROR:
do_icarus_close(thr);
applog(LOG_ERR, "%"PRIpreprv": Comms error (rerr)", icarus->proc_repr);
dev_error(icarus, REASON_DEV_COMMS_ERROR);
if (!icarus_reopen(icarus, state, &fd))
return -1;
break;
case ICA_GETS_TIMEOUT:
if (info->quirk_reopen == 1 && !icarus_reopen(icarus, state, &fd))
return -1;
case ICA_GETS_OK: