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driver-bitfury.c
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driver-bitfury.c
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/*
* Copyright 2013 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 "miner.h"
#include "driver-bitfury.h"
#include "sha2.h"
#include "mcp2210.h"
#include "libbitfury.h"
int opt_bxf_temp_target = BXF_TEMP_TARGET / 10;
/* Wait longer 1/3 longer than it would take for a full nonce range */
#define BF1WAIT 1600
#define BF1MSGSIZE 7
#define BF1INFOSIZE 14
static void bf1_empty_buffer(struct cgpu_info *bitfury)
{
char buf[512];
int amount;
do {
usb_read_once(bitfury, buf, 512, &amount, C_BF1_FLUSH);
} while (amount);
}
static bool bf1_open(struct cgpu_info *bitfury)
{
uint32_t buf[2];
int err;
bf1_empty_buffer(bitfury);
/* Magic sequence to reset device only really needed for windows but
* harmless on linux. */
buf[0] = 0x80250000;
buf[1] = 0x00000800;
err = usb_transfer(bitfury, 0, 9, 1, 0, C_ATMEL_RESET);
if (!err)
err = usb_transfer(bitfury, 0x21, 0x22, 0, 0, C_ATMEL_OPEN);
if (!err) {
err = usb_transfer_data(bitfury, 0x21, 0x20, 0x0000, 0, buf,
BF1MSGSIZE, C_ATMEL_INIT);
}
if (err < 0) {
applog(LOG_INFO, "%s %d: Failed to open with error %s", bitfury->drv->name,
bitfury->device_id, libusb_error_name(err));
}
return (err == BF1MSGSIZE);
}
static void bf1_close(struct cgpu_info *bitfury)
{
bf1_empty_buffer(bitfury);
}
static void bf1_identify(struct cgpu_info *bitfury)
{
int amount;
usb_write(bitfury, "L", 1, &amount, C_BF1_IDENTIFY);
}
static void bitfury_identify(struct cgpu_info *bitfury)
{
struct bitfury_info *info = bitfury->device_data;
switch(info->ident) {
case IDENT_BF1:
bf1_identify(bitfury);
break;
case IDENT_BXF:
default:
break;
}
}
static bool bf1_getinfo(struct cgpu_info *bitfury, struct bitfury_info *info)
{
int amount, err;
char buf[16];
err = usb_write(bitfury, "I", 1, &amount, C_BF1_REQINFO);
if (err) {
applog(LOG_INFO, "%s %d: Failed to write REQINFO",
bitfury->drv->name, bitfury->device_id);
return false;
}
err = usb_read(bitfury, buf, BF1INFOSIZE, &amount, C_BF1_GETINFO);
if (err) {
applog(LOG_INFO, "%s %d: Failed to read GETINFO",
bitfury->drv->name, bitfury->device_id);
return false;
}
if (amount != BF1INFOSIZE) {
applog(LOG_INFO, "%s %d: Getinfo received %d bytes instead of %d",
bitfury->drv->name, bitfury->device_id, amount, BF1INFOSIZE);
return false;
}
info->version = buf[1];
memcpy(&info->product, buf + 2, 8);
memcpy(&info->serial, buf + 10, 4);
applog(LOG_INFO, "%s %d: Getinfo returned version %d, product %s serial %08x", bitfury->drv->name,
bitfury->device_id, info->version, info->product, info->serial);
bf1_empty_buffer(bitfury);
return true;
}
static bool bf1_reset(struct cgpu_info *bitfury)
{
int amount, err;
char buf[16];
err = usb_write(bitfury, "R", 1, &amount, C_BF1_REQRESET);
if (err) {
applog(LOG_INFO, "%s %d: Failed to write REQRESET",
bitfury->drv->name, bitfury->device_id);
return false;
}
err = usb_read_timeout(bitfury, buf, BF1MSGSIZE, &amount, BF1WAIT,
C_BF1_GETRESET);
if (err) {
applog(LOG_INFO, "%s %d: Failed to read GETRESET",
bitfury->drv->name, bitfury->device_id);
return false;
}
if (amount != BF1MSGSIZE) {
applog(LOG_INFO, "%s %d: Getreset received %d bytes instead of %d",
bitfury->drv->name, bitfury->device_id, amount, BF1MSGSIZE);
return false;
}
applog(LOG_DEBUG, "%s %d: Getreset returned %s", bitfury->drv->name,
bitfury->device_id, buf);
bf1_empty_buffer(bitfury);
return true;
}
static bool bxf_send_msg(struct cgpu_info *bitfury, char *buf, enum usb_cmds cmd)
{
int err, amount, len;
if (unlikely(bitfury->usbinfo.nodev))
return false;
len = strlen(buf);
applog(LOG_DEBUG, "%s %d: Sending %s", bitfury->drv->name, bitfury->device_id, buf);
err = usb_write(bitfury, buf, len, &amount, cmd);
if (err || amount != len) {
applog(LOG_WARNING, "%s %d: Error %d sending %s sent %d of %d", bitfury->drv->name,
bitfury->device_id, err, usb_cmdname(cmd), amount, len);
return false;
}
return true;
}
/* Returns the amount received only if we receive a full message, otherwise
* it returns the err value. */
static int bxf_recv_msg(struct cgpu_info *bitfury, char *buf)
{
int err, amount;
err = usb_read_nl(bitfury, buf, 512, &amount, C_BXF_READ);
if (amount)
applog(LOG_DEBUG, "%s %d: Received %s", bitfury->drv->name, bitfury->device_id, buf);
if (!err)
return amount;
return err;
}
/* Keep reading till the first timeout or error */
static void bxf_clear_buffer(struct cgpu_info *bitfury)
{
int err, retries = 0;
char buf[512];
do {
err = bxf_recv_msg(bitfury, buf);
usb_buffer_clear(bitfury);
if (err < 0)
break;
} while (retries++ < 10);
}
static bool bxf_send_flush(struct cgpu_info *bitfury)
{
char buf[8];
sprintf(buf, "flush\n");
return bxf_send_msg(bitfury, buf, C_BXF_FLUSH);
}
static bool bxf_detect_one(struct cgpu_info *bitfury, struct bitfury_info *info)
{
int err, retries = 0;
char buf[512];
if (!bxf_send_flush(bitfury))
return false;
bxf_clear_buffer(bitfury);
sprintf(buf, "version\n");
if (!bxf_send_msg(bitfury, buf, C_BXF_VERSION))
return false;
do {
err = bxf_recv_msg(bitfury, buf);
if (err < 0 && err != LIBUSB_ERROR_TIMEOUT)
return false;
if (err > 0 && !strncmp(buf, "version", 7)) {
sscanf(&buf[8], "%d.%d rev %d chips %d", &info->ver_major,
&info->ver_minor, &info->hw_rev, &info->chips);
applog(LOG_INFO, "%s %d: Version %d.%d rev %d chips %d",
bitfury->drv->name, bitfury->device_id, info->ver_major,
info->ver_minor, info->hw_rev, info->chips);
break;
}
/* Keep parsing if the buffer is full without counting it as
* a retry. */
if (usb_buffer_size(bitfury))
continue;
} while (retries++ < 10);
if (!add_cgpu(bitfury))
quit(1, "Failed to add_cgpu in bxf_detect_one");
update_usb_stats(bitfury);
applog(LOG_INFO, "%s %d: Successfully initialised %s",
bitfury->drv->name, bitfury->device_id, bitfury->device_path);
info->total_nonces = 1;
info->temp_target = opt_bxf_temp_target * 10;
/* This unsets it to make sure it gets set on the first pass */
info->maxroll = -1;
return true;
}
static bool bf1_detect_one(struct cgpu_info *bitfury, struct bitfury_info *info)
{
if (!bf1_open(bitfury))
goto out_close;
/* Send getinfo request */
if (!bf1_getinfo(bitfury, info))
goto out_close;
/* Send reset request */
if (!bf1_reset(bitfury))
goto out_close;
bf1_identify(bitfury);
bf1_empty_buffer(bitfury);
if (!add_cgpu(bitfury))
quit(1, "Failed to add_cgpu in bf1_detect_one");
update_usb_stats(bitfury);
applog(LOG_INFO, "%s %d: Successfully initialised %s",
bitfury->drv->name, bitfury->device_id, bitfury->device_path);
/* This does not artificially raise hashrate, it simply allows the
* hashrate to adapt quickly on starting. */
info->total_nonces = 1;
return true;
out_close:
bf1_close(bitfury);
return false;
}
static void nf1_close(struct cgpu_info *bitfury)
{
struct bitfury_info *info = bitfury->device_data;
struct mcp_settings *mcp = &info->mcp;
int i;
mcp2210_spi_cancel(bitfury);
/* Set all pins to input mode, ignoring return code */
for (i = 0; i < 9; i++) {
mcp->direction.pin[i] = MCP2210_GPIO_INPUT;
mcp->value.pin[i] = MCP2210_GPIO_PIN_LOW;
}
mcp2210_set_gpio_settings(bitfury, mcp);
}
static bool nf1_reinit(struct cgpu_info *bitfury, struct bitfury_info *info)
{
spi_clear_buf(info);
spi_add_break(info);
spi_set_freq(info);
spi_send_conf(info);
spi_send_init(info);
spi_reset(bitfury, info);
return spi_txrx(bitfury, info);
}
static bool nf1_set_spi_settings(struct cgpu_info *bitfury, struct bitfury_info *info)
{
struct mcp_settings *mcp = &info->mcp;
return mcp2210_set_spi_transfer_settings(bitfury, mcp->bitrate, mcp->icsv,
mcp->acsv, mcp->cstdd, mcp->ldbtcsd, mcp->sdbd, mcp->bpst, mcp->spimode);
}
static bool nf1_detect_one(struct cgpu_info *bitfury, struct bitfury_info *info)
{
struct mcp_settings *mcp = &info->mcp;
char buf[MCP2210_BUFFER_LENGTH];
unsigned int length;
bool ret = false;
int i, val;
mcp2210_get_gpio_settings(bitfury, mcp);
for (i = 0; i < 9; i++) {
/* Set all pins to GPIO mode */
mcp->designation.pin[i] = MCP2210_PIN_GPIO;
/* Set all pins to input mode */
mcp->direction.pin[i] = MCP2210_GPIO_INPUT;
mcp->value.pin[i] = MCP2210_GPIO_PIN_LOW;
}
/* Set LED and PWR pins to output and high */
mcp->direction.pin[NF1_PIN_LED] = mcp->direction.pin[NF1_PIN_PWR_EN] = MCP2210_GPIO_OUTPUT;
mcp->value.pin[NF1_PIN_LED] = mcp->value.pin[NF1_PIN_PWR_EN] = MCP2210_GPIO_PIN_HIGH;
mcp->direction.pin[4] = MCP2210_GPIO_OUTPUT;
mcp->designation.pin[4] = MCP2210_PIN_CS;
if (!mcp2210_set_gpio_settings(bitfury, mcp))
goto out;
if (opt_debug) {
struct gpio_pin gp;
mcp2210_get_gpio_pindirs(bitfury, &gp);
for (i = 0; i < 9; i++) {
applog(LOG_DEBUG, "%s %d: Pin dir %d %d", bitfury->drv->name,
bitfury->device_id, i, gp.pin[i]);
}
mcp2210_get_gpio_pinvals(bitfury, &gp);
for (i = 0; i < 9; i++) {
applog(LOG_DEBUG, "%s %d: Pin val %d %d", bitfury->drv->name,
bitfury->device_id, i, gp.pin[i]);
}
mcp2210_get_gpio_pindes(bitfury, &gp);
for (i = 0; i < 9; i++) {
applog(LOG_DEBUG, "%s %d: Pin des %d %d", bitfury->drv->name,
bitfury->device_id, i, gp.pin[i]);
}
}
/* Cancel any transfers in progress */
if (!mcp2210_spi_cancel(bitfury))
goto out;
if (!mcp2210_get_spi_transfer_settings(bitfury, &mcp->bitrate, &mcp->icsv,
&mcp->acsv, &mcp->cstdd, &mcp->ldbtcsd, &mcp->sdbd, &mcp->bpst, &mcp->spimode))
goto out;
mcp->bitrate = 200000; // default to 200kHz
mcp->icsv = 0xffff;
mcp->acsv = 0xffef;
mcp->cstdd = mcp->ldbtcsd = mcp->sdbd = mcp->spimode = 0;
mcp->bpst = 1;
if (!nf1_set_spi_settings(bitfury, info))
goto out;
buf[0] = 0;
length = 1;
if (!mcp2210_spi_transfer(bitfury, mcp, buf, &length))
goto out;
/* after this command SCK_OVRRIDE should read the same as current SCK
* value (which for mode 0 should be 0) */
if (!mcp2210_get_gpio_pinval(bitfury, NF1_PIN_SCK_OVR, &val))
goto out;
if (val != MCP2210_GPIO_PIN_LOW)
goto out;
/* switch SCK to polarity (default SCK=1 in mode 2) */
mcp->spimode = 2;
if (!nf1_set_spi_settings(bitfury, info))
goto out;
buf[0] = 0;
length = 1;
if (!mcp2210_spi_transfer(bitfury, mcp, buf, &length))
goto out;
/* after this command SCK_OVRRIDE should read the same as current SCK
* value (which for mode 2 should be 1) */
if (!mcp2210_get_gpio_pinval(bitfury, NF1_PIN_SCK_OVR, &val))
goto out;
if (val != MCP2210_GPIO_PIN_HIGH)
goto out;
/* switch SCK to polarity (default SCK=0 in mode 0) */
mcp->spimode = 0;
if (!nf1_set_spi_settings(bitfury, info))
goto out;
buf[0] = 0;
length = 1;
if (!mcp2210_spi_transfer(bitfury, mcp, buf, &length))
goto out;
if (!mcp2210_get_gpio_pinval(bitfury, NF1_PIN_SCK_OVR, &val))
goto out;
if (val != MCP2210_GPIO_PIN_LOW)
goto out;
info->osc6_bits = 54;
if (!nf1_reinit(bitfury, info))
goto out;
ret = true;
if (!add_cgpu(bitfury))
quit(1, "Failed to add_cgpu in nf1_detect_one");
update_usb_stats(bitfury);
applog(LOG_INFO, "%s %d: Successfully initialised %s",
bitfury->drv->name, bitfury->device_id, bitfury->device_path);
spi_clear_buf(info);
info->total_nonces = 1;
out:
if (!ret)
nf1_close(bitfury);
return ret;
}
static struct cgpu_info *bitfury_detect_one(struct libusb_device *dev, struct usb_find_devices *found)
{
struct cgpu_info *bitfury;
struct bitfury_info *info;
enum sub_ident ident;
bool ret = false;
bitfury = usb_alloc_cgpu(&bitfury_drv, 1);
if (!usb_init(bitfury, dev, found))
goto out;
applog(LOG_INFO, "%s %d: Found at %s", bitfury->drv->name,
bitfury->device_id, bitfury->device_path);
info = calloc(sizeof(struct bitfury_info), 1);
if (!info)
quit(1, "Failed to calloc info in bitfury_detect_one");
bitfury->device_data = info;
info->ident = ident = usb_ident(bitfury);
switch (ident) {
case IDENT_BF1:
ret = bf1_detect_one(bitfury, info);
break;
case IDENT_BXF:
ret = bxf_detect_one(bitfury, info);
break;
case IDENT_NF1:
ret = nf1_detect_one(bitfury, info);
break;
default:
applog(LOG_INFO, "%s %d: Unrecognised bitfury device",
bitfury->drv->name, bitfury->device_id);
break;
}
if (!ret) {
free(info);
usb_uninit(bitfury);
out:
bitfury = usb_free_cgpu(bitfury);
}
return bitfury;
}
static void bitfury_detect(bool __maybe_unused hotplug)
{
usb_detect(&bitfury_drv, bitfury_detect_one);
}
static void parse_bxf_submit(struct cgpu_info *bitfury, struct bitfury_info *info, char *buf)
{
struct work *match_work, *tmp, *work = NULL;
struct thr_info *thr = info->thr;
uint32_t nonce, timestamp;
int workid, chip = -1;
if (!sscanf(&buf[7], "%x %x %x %d", &nonce, &workid, ×tamp, &chip)) {
applog(LOG_WARNING, "%s %d: Failed to parse submit response",
bitfury->drv->name, bitfury->device_id);
return;
}
if (chip > -1 && chip < 2)
info->submits[chip]++;
applog(LOG_DEBUG, "%s %d: Parsed nonce %u workid %d timestamp %u",
bitfury->drv->name, bitfury->device_id, nonce, workid, timestamp);
rd_lock(&bitfury->qlock);
HASH_ITER(hh, bitfury->queued_work, match_work, tmp) {
if (match_work->subid == workid) {
work = copy_work(match_work);
break;
}
}
rd_unlock(&bitfury->qlock);
if (!work) {
/* Discard first results from any previous run */
if (unlikely(!info->valid))
return;
applog(LOG_INFO, "%s %d: No matching work", bitfury->drv->name, bitfury->device_id);
mutex_lock(&info->lock);
info->no_matching_work++;
mutex_unlock(&info->lock);
inc_hw_errors(thr);
return;
}
/* Set the device start time from when we first get valid results */
if (unlikely(!info->valid)) {
info->valid = true;
cgtime(&bitfury->dev_start_tv);
}
set_work_ntime(work, timestamp);
if (submit_nonce(thr, work, nonce)) {
mutex_lock(&info->lock);
info->nonces++;
mutex_unlock(&info->lock);
}
free_work(work);
}
static bool bxf_send_clock(struct cgpu_info *bitfury, struct bitfury_info *info,
uint8_t clockspeed)
{
char buf[64];
info->clocks = clockspeed;
sprintf(buf, "clock %d %d\n", clockspeed, clockspeed);
return bxf_send_msg(bitfury, buf, C_BXF_CLOCK);
}
static void parse_bxf_temp(struct cgpu_info *bitfury, struct bitfury_info *info, char *buf)
{
uint8_t clockspeed = info->clocks;
int decitemp;
if (!sscanf(&buf[5], "%d", &decitemp)) {
applog(LOG_INFO, "%s %d: Failed to parse temperature",
bitfury->drv->name, bitfury->device_id);
return;
}
mutex_lock(&info->lock);
info->temperature = (double)decitemp / 10;
if (decitemp > info->max_decitemp) {
info->max_decitemp = decitemp;
applog(LOG_DEBUG, "%s %d: New max decitemp %d", bitfury->drv->name,
bitfury->device_id, decitemp);
}
mutex_unlock(&info->lock);
if (decitemp > info->temp_target + BXF_TEMP_HYSTERESIS) {
if (info->clocks <= BXF_CLOCK_MIN)
goto out;
applog(LOG_WARNING, "%s %d: Hit overheat temperature of %d, throttling!",
bitfury->drv->name, bitfury->device_id, decitemp);
clockspeed = BXF_CLOCK_MIN;
goto out;
}
if (decitemp > info->temp_target) {
if (info->clocks <= BXF_CLOCK_MIN)
goto out;
if (decitemp < info->last_decitemp)
goto out;
applog(LOG_INFO, "%s %d: Temp %d over target and not falling, decreasing clock",
bitfury->drv->name, bitfury->device_id, decitemp);
clockspeed = info->clocks - 1;
goto out;
}
if (decitemp <= info->temp_target && decitemp >= info->temp_target - BXF_TEMP_HYSTERESIS) {
if (decitemp == info->last_decitemp)
goto out;
if (decitemp > info->last_decitemp) {
if (info->clocks <= BXF_CLOCK_MIN)
goto out;
applog(LOG_DEBUG, "%s %d: Temp %d in target and rising, decreasing clock",
bitfury->drv->name, bitfury->device_id, decitemp);
clockspeed = info->clocks - 1;
goto out;
}
/* implies: decitemp < info->last_decitemp */
if (info->clocks >= BXF_CLOCK_DEFAULT)
goto out;
applog(LOG_DEBUG, "%s %d: Temp %d in target and falling, increasing clock",
bitfury->drv->name, bitfury->device_id, decitemp);
clockspeed = info->clocks + 1;
goto out;
}
/* implies: decitemp < info->temp_target - BXF_TEMP_HYSTERESIS */
if (info->clocks >= BXF_CLOCK_DEFAULT)
goto out;
applog(LOG_DEBUG, "%s %d: Temp %d below target, increasing clock",
bitfury->drv->name, bitfury->device_id, decitemp);
clockspeed = info->clocks + 1;
out:
bxf_send_clock(bitfury, info, clockspeed);
info->last_decitemp = decitemp;
}
static void bxf_update_work(struct cgpu_info *bitfury, struct bitfury_info *info);
static void parse_bxf_needwork(struct cgpu_info *bitfury, struct bitfury_info *info,
char *buf)
{
int needed;
if (!sscanf(&buf[9], "%d", &needed)) {
applog(LOG_INFO, "%s %d: Failed to parse needwork",
bitfury->drv->name, bitfury->device_id);
return;
}
while (needed-- > 0)
bxf_update_work(bitfury, info);
}
static void parse_bxf_job(struct cgpu_info *bitfury, struct bitfury_info *info, char *buf)
{
int job_id, timestamp, chip;
if (sscanf(&buf[4], "%x %x %x", &job_id, ×tamp, &chip) != 3) {
applog(LOG_INFO, "%s %d: Failed to parse job",
bitfury->drv->name, bitfury->device_id);
return;
}
if (chip > 1) {
applog(LOG_INFO, "%s %d: Invalid job chip number %d",
bitfury->drv->name, bitfury->device_id, chip);
return;
}
++info->job[chip];
}
static void parse_bxf_hwerror(struct cgpu_info *bitfury, struct bitfury_info *info, char *buf)
{
int chip;
if (!sscanf(&buf[8], "%d", &chip)) {
applog(LOG_INFO, "%s %d: Failed to parse hwerror",
bitfury->drv->name, bitfury->device_id);
return;
}
if (chip > 1) {
applog(LOG_INFO, "%s %d: Invalid hwerror chip number %d",
bitfury->drv->name, bitfury->device_id, chip);
return;
}
++info->filtered_hw[chip];
}
#define PARSE_BXF_MSG(MSG) \
msg = strstr(buf, #MSG); \
if (msg) { \
parse_bxf_##MSG(bitfury, info, msg); \
continue; \
}
static void *bxf_get_results(void *userdata)
{
struct cgpu_info *bitfury = userdata;
struct bitfury_info *info = bitfury->device_data;
char threadname[24], buf[512];
snprintf(threadname, 24, "bxf_recv/%d", bitfury->device_id);
/* We operate the device at lowest diff since it's not a lot of results
* to process and gives us a better indicator of the nonce return rate
* and hardware errors. */
sprintf(buf, "target ffffffff\n");
if (!bxf_send_msg(bitfury, buf, C_BXF_TARGET))
goto out;
/* Read thread sends the first work item to get the device started
* since it will roll ntime and make work itself from there on. */
bxf_update_work(bitfury, info);
bxf_update_work(bitfury, info);
while (likely(!bitfury->shutdown)) {
char *msg;
int err;
if (unlikely(bitfury->usbinfo.nodev))
break;
err = bxf_recv_msg(bitfury, buf);
if (err < 0) {
if (err != LIBUSB_ERROR_TIMEOUT)
break;
continue;
}
if (!err)
continue;
PARSE_BXF_MSG(submit);
PARSE_BXF_MSG(temp);
PARSE_BXF_MSG(needwork);
PARSE_BXF_MSG(job);
PARSE_BXF_MSG(hwerror);
applog(LOG_DEBUG, "%s %d: Unrecognised string %s",
bitfury->drv->name, bitfury->device_id, buf);
}
out:
return NULL;
}
static bool bxf_prepare(struct cgpu_info *bitfury, struct bitfury_info *info)
{
mutex_init(&info->lock);
if (pthread_create(&info->read_thr, NULL, bxf_get_results, (void *)bitfury))
quit(1, "Failed to create bxf read_thr");
return bxf_send_clock(bitfury, info, BXF_CLOCK_DEFAULT);
}
static bool bitfury_prepare(struct thr_info *thr)
{
struct cgpu_info *bitfury = thr->cgpu;
struct bitfury_info *info = bitfury->device_data;
info->thr = thr;
switch(info->ident) {
case IDENT_BXF:
return bxf_prepare(bitfury, info);
break;
case IDENT_BF1:
default:
return true;
}
}
static int64_t bitfury_rate(struct bitfury_info *info)
{
double nonce_rate;
int64_t ret = 0;
info->cycles++;
info->total_nonces += info->nonces;
info->saved_nonces += info->nonces;
info->nonces = 0;
nonce_rate = (double)info->total_nonces / (double)info->cycles;
if (info->saved_nonces >= nonce_rate) {
info->saved_nonces -= nonce_rate;
ret = (double)0xffffffff * nonce_rate;
}
return ret;
}
static int64_t bf1_scan(struct thr_info *thr, struct cgpu_info *bitfury,
struct bitfury_info *info)
{
int amount, i, aged, total = 0, ms_diff;
char readbuf[512], buf[45];
struct work *work, *tmp;
struct timeval tv_now;
int64_t ret = 0;
work = get_queue_work(thr, bitfury, thr->id);
if (unlikely(thr->work_restart)) {
work_completed(bitfury, work);
goto out;
}
buf[0] = 'W';
memcpy(buf + 1, work->midstate, 32);
memcpy(buf + 33, work->data + 64, 12);
/* New results may spill out from the latest work, making us drop out
* too early so read whatever we get for the first half nonce and then
* look for the results to prev work. */
cgtime(&tv_now);
ms_diff = 600 - ms_tdiff(&tv_now, &info->tv_start);
if (ms_diff > 0) {
usb_read_timeout_cancellable(bitfury, readbuf, 512, &amount, ms_diff,
C_BF1_GETRES);
total += amount;
}
/* Now look for the bulk of the previous work results, they will come
* in a batch following the first data. */
cgtime(&tv_now);
ms_diff = BF1WAIT - ms_tdiff(&tv_now, &info->tv_start);
/* If a work restart was sent, just empty the buffer. */
if (unlikely(ms_diff < 10 || thr->work_restart))
ms_diff = 10;
usb_read_once_timeout_cancellable(bitfury, readbuf + total, BF1MSGSIZE,
&amount, ms_diff, C_BF1_GETRES);
total += amount;
while (amount) {
usb_read_once_timeout(bitfury, readbuf + total, 512 - total, &amount, 10,
C_BF1_GETRES);
total += amount;
};
/* Don't send whatever work we've stored if we got a restart */
if (unlikely(thr->work_restart))
goto out;
/* Send work */
cgtime(&work->tv_work_start);
usb_write(bitfury, buf, 45, &amount, C_BF1_REQWORK);
cgtime(&info->tv_start);
/* Get response acknowledging work */
usb_read(bitfury, buf, BF1MSGSIZE, &amount, C_BF1_GETWORK);
out:
/* Search for what work the nonce matches in order of likelihood. Last
* entry is end of result marker. */
for (i = 0; i < total - BF1MSGSIZE; i += BF1MSGSIZE) {
bool found = false;
uint32_t nonce;
/* Ignore state & switched data in results for now. */
memcpy(&nonce, readbuf + i + 3, 4);
nonce = decnonce(nonce);
rd_lock(&bitfury->qlock);
HASH_ITER(hh, bitfury->queued_work, work, tmp) {
if (bitfury_checkresults(thr, work, nonce)) {
info->nonces++;
found = true;
break;
}
}
rd_unlock(&bitfury->qlock);
if (!found) {
if (likely(info->valid))
inc_hw_errors(thr);
} else if (unlikely(!info->valid)) {
info->valid = true;
cgtime(&bitfury->dev_start_tv);
}
}
cgtime(&tv_now);
/* This iterates over the hashlist finding work started more than 6
* seconds ago. */
aged = age_queued_work(bitfury, 6.0);
if (aged) {
applog(LOG_DEBUG, "%s %d: Aged %d work items", bitfury->drv->name,
bitfury->device_id, aged);
}
ret = bitfury_rate(info);
if (unlikely(bitfury->usbinfo.nodev)) {
applog(LOG_WARNING, "%s %d: Device disappeared, disabling thread",
bitfury->drv->name, bitfury->device_id);
ret = -1;
}
return ret;
}
static int64_t bxf_scan(struct cgpu_info *bitfury, struct bitfury_info *info)
{
int64_t ret;
int aged;
bxf_update_work(bitfury, info);
cgsleep_ms(600);
mutex_lock(&info->lock);
ret = bitfury_rate(info);
mutex_unlock(&info->lock);
/* Keep no more than the last 90 seconds worth of work items in the
* hashlist */
aged = age_queued_work(bitfury, 90.0);
if (aged) {
applog(LOG_DEBUG, "%s %d: Aged %d work items", bitfury->drv->name,
bitfury->device_id, aged);
}
if (unlikely(bitfury->usbinfo.nodev)) {
applog(LOG_WARNING, "%s %d: Device disappeared, disabling thread",
bitfury->drv->name, bitfury->device_id);
ret = -1;
}
return ret;
}
static int64_t nf1_scan(struct thr_info *thr, struct cgpu_info *bitfury,
struct bitfury_info *info)
{
int64_t ret = 0;
if (!info->work) {
info->work = get_work(thr, thr->id);
if (unlikely(thr->work_restart)) {
free_work(info->work);
return 0;
}
bitfury_work_to_payload(&info->payload, info->work);
}
if (!libbitfury_sendHashData(thr, bitfury, info))
return -1;
if (info->job_switched) {
if (likely(info->owork))
free_work(info->owork);
info->owork = info->work;
info->work = NULL;
}
ret = bitfury_rate(info);
if (unlikely(bitfury->usbinfo.nodev)) {
applog(LOG_WARNING, "%s %d: Device disappeared, disabling thread",
bitfury->drv->name, bitfury->device_id);
ret = -1;
}
return ret;
}
static int64_t bitfury_scanwork(struct thr_info *thr)
{
struct cgpu_info *bitfury = thr->cgpu;
struct bitfury_info *info = bitfury->device_data;
switch(info->ident) {
case IDENT_BF1:
return bf1_scan(thr, bitfury, info);
case IDENT_BXF:
return bxf_scan(bitfury, info);
case IDENT_NF1:
return nf1_scan(thr, bitfury, info);
default:
return 0;
}
}
static void bxf_send_maxroll(struct cgpu_info *bitfury, int maxroll)
{
char buf[20];
sprintf(buf, "maxroll %d\n", maxroll);
bxf_send_msg(bitfury, buf, C_BXF_MAXROLL);
}
static bool bxf_send_work(struct cgpu_info *bitfury, struct work *work)
{
char buf[512], hexwork[156];
__bin2hex(hexwork, work->data, 76);
sprintf(buf, "work %s %x\n", hexwork, work->subid);
return bxf_send_msg(bitfury, buf, C_BXF_WORK);
}
static void bxf_update_work(struct cgpu_info *bitfury, struct bitfury_info *info)
{
struct thr_info *thr = info->thr;
struct work *work;
if (unlikely(bitfury->usbinfo.nodev))
return;
work = get_queue_work(thr, bitfury, thr->id);
if (work->drv_rolllimit != info->maxroll) {
info->maxroll = work->drv_rolllimit;
bxf_send_maxroll(bitfury, info->maxroll);
}
mutex_lock(&info->lock);
work->subid = ++info->work_id;
mutex_unlock(&info->lock);
cgtime(&work->tv_work_start);
bxf_send_work(bitfury, work);
}
static void bitfury_flush_work(struct cgpu_info *bitfury)
{
struct bitfury_info *info = bitfury->device_data;
switch(info->ident) {
case IDENT_BXF:
bxf_send_flush(bitfury);