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driver-cointerra.c
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driver-cointerra.c
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/*
* Copyright 2013-2014 Con Kolivas <[email protected]>
*
* 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-cointerra.h"
#include <math.h>
static const char *cointerra_hdr = "ZZ";
int opt_ps_load;
static void cta_gen_message(char *msg, char type)
{
memset(msg, 0, CTA_MSG_SIZE);
memcpy(msg, cointerra_hdr, 2);
msg[CTA_MSG_TYPE] = type;
}
/* Find the number of leading zero bits in diff */
static uint8_t diff_to_bits(double diff)
{
uint64_t diff64;
uint8_t i;
diff /= 0.9999847412109375;
diff *= (double)2147483648.0;
if (diff > 0x8000000000000000ULL)
diff = 0x8000000000000000ULL;
/* Convert it to an integer */
diff64 = diff;
for (i = 0; diff64; i++, diff64 >>= 1);
return i;
}
static double bits_to_diff(uint8_t bits)
{
double ret = 1.0;
if (likely(bits > 32))
ret *= 1ull << (bits - 32);
else if (unlikely(bits < 32))
ret /= 1ull << (32 - bits);
return ret;
}
static bool cta_reset_init(char *buf)
{
return ((buf[CTA_MSG_TYPE] == CTA_RECV_RDONE) && ((buf[CTA_RESET_TYPE]&0x3) == CTA_RESET_INIT));
}
static char *mystrstr(char *haystack, int size, const char *needle)
{
int loop = 0;
while (loop < (size-1)) {
if ((haystack[loop] == needle[0])&&
(haystack[loop+1] == needle[1]))
return &haystack[loop];
loop++;
}
return NULL;
}
static bool cta_open(struct cgpu_info *cointerra)
{
int err, amount, offset = 0;
char buf[CTA_MSG_SIZE];
cgtimer_t ts_start;
bool ret = false;
if (cointerra->usbinfo.nodev)
return false;
applog(LOG_INFO, "CTA_OPEN");
cta_gen_message(buf, CTA_SEND_RESET);
// set the initial difficulty
buf[CTA_RESET_TYPE] = CTA_RESET_INIT | CTA_RESET_DIFF;
buf[CTA_RESET_DIFF] = diff_to_bits(CTA_INIT_DIFF);
buf[CTA_RESET_LOAD] = opt_cta_load ? opt_cta_load : 255;
buf[CTA_RESET_PSLOAD] = opt_ps_load;
if (cointerra->usbinfo.nodev)
return ret;
err = usb_write(cointerra, buf, CTA_MSG_SIZE, &amount, C_CTA_WRITE);
if (err) {
applog(LOG_INFO, "Write error %d, wrote %d of %d", err, amount, CTA_MSG_SIZE);
return ret;
}
cgtimer_time(&ts_start);
/* Read from the device for up to 2 seconds discarding any data that
* doesn't match a reset complete acknowledgement. */
while (42) {
cgtimer_t ts_now, ts_diff;
char *msg;
cgtimer_time(&ts_now);
cgtimer_sub(&ts_now, &ts_start, &ts_diff);
if (cgtimer_to_ms(&ts_diff) > 2000) {
applog(LOG_DEBUG, "%s %d: Timed out waiting for response to reset init",
cointerra->drv->name, cointerra->device_id);
break;
}
if (cointerra->usbinfo.nodev)
break;
err = usb_read(cointerra, buf + offset, CTA_MSG_SIZE - offset, &amount, C_CTA_READ);
if (err && err != LIBUSB_ERROR_TIMEOUT) {
applog(LOG_INFO, "%s %d: Read error %d, read %d", cointerra->drv->name,
cointerra->device_id, err, amount);
break;
}
if (!amount)
continue;
msg = mystrstr(buf, amount, cointerra_hdr);
if (!msg) {
/* Keep the last byte in case it's the first byte of
* the 2 byte header. */
offset = 1;
memmove(buf, buf + amount - 1, offset);
continue;
}
if (msg > buf) {
/* length of message = offset for next usb_read after moving */
offset = CTA_MSG_SIZE - (msg - buf);
memmove(buf, msg, offset);
continue;
}
/* We have a full sized message starting with the header now */
if (cta_reset_init(buf)) {
/* We can't store any other data returned with this
* reset since we have not allocated any memory for
* a cointerra_info structure yet. */
applog(LOG_INFO, "%s %d: Successful reset init received",
cointerra->drv->name, cointerra->device_id);
ret = true;
break;
}
}
return ret;
}
static void cta_clear_work(struct cgpu_info *cgpu)
{
struct work *work, *tmp;
wr_lock(&cgpu->qlock);
HASH_ITER(hh, cgpu->queued_work, work, tmp) {
__work_completed(cgpu, work);
free_work(work);
}
wr_unlock(&cgpu->qlock);
}
static void cta_close(struct cgpu_info *cointerra)
{
struct cointerra_info *info = cointerra->device_data;
/* Wait for read thread to die */
pthread_join(info->read_thr, NULL);
/* Open does the same reset init followed by response as is required to
* close the device. */
if (!cta_open(cointerra)) {
applog(LOG_INFO, "%s %d: Reset on close failed", cointerra->drv->name,
cointerra->device_id);
}
mutex_destroy(&info->lock);
mutex_destroy(&info->sendlock);
/* Don't free info here to avoid trying to access dereferenced members
* once a device is unplugged. */
cta_clear_work(cointerra);
}
static struct cgpu_info *cta_detect_one(struct libusb_device *dev, struct usb_find_devices *found)
{
struct cgpu_info *cointerra = usb_alloc_cgpu(&cointerra_drv, 1);
int tries = 0;
if (!usb_init(cointerra, dev, found))
goto fail;
applog(LOG_INFO, "%s %d: Found at %s", cointerra->drv->name,
cointerra->device_id, cointerra->device_path);
while (!cta_open(cointerra) && !cointerra->usbinfo.nodev) {
if (tries++ > 3)
goto failed_open;
applog(LOG_INFO, "%s %d: Failed to open %d times, retrying", cointerra->drv->name,
cointerra->device_id, tries);
}
if (!add_cgpu(cointerra))
goto fail_close;
update_usb_stats(cointerra);
applog(LOG_INFO, "%s %d: Successfully set up %s", cointerra->drv->name,
cointerra->device_id, cointerra->device_path);
return cointerra;
fail_close:
cta_close(cointerra);
failed_open:
applog(LOG_INFO, "%s %d: Failed to initialise %s", cointerra->drv->name,
cointerra->device_id, cointerra->device_path);
fail:
usb_free_cgpu(cointerra);
return NULL;
}
static void cta_detect(bool __maybe_unused hotplug)
{
usb_detect(&cointerra_drv, cta_detect_one);
}
/* This function will remove a work item from the hashtable if it matches the
* id in work->subid and return a pointer to the work but it will not free the
* work. It may return NULL if it cannot find matching work. */
static struct work *take_work_by_id(struct cgpu_info *cgpu, uint16_t id)
{
struct work *work, *tmp, *ret = NULL;
wr_lock(&cgpu->qlock);
HASH_ITER(hh, cgpu->queued_work, work, tmp) {
if (work->subid == id) {
ret = work;
break;
}
}
if (ret)
__work_completed(cgpu, ret);
wr_unlock(&cgpu->qlock);
return ret;
}
/* This function will look up a work item in the hashtable if it matches the
* id in work->subid and return a cloned work item if it matches. It may return
* NULL if it cannot find matching work. */
static struct work *clone_work_by_id(struct cgpu_info *cgpu, uint16_t id)
{
struct work *work, *tmp, *ret = NULL;
rd_lock(&cgpu->qlock);
HASH_ITER(hh, cgpu->queued_work, work, tmp) {
if (work->subid == id) {
ret = work;
break;
}
}
if (ret)
ret = copy_work(ret);
rd_unlock(&cgpu->qlock);
return ret;
}
static bool cta_send_msg(struct cgpu_info *cointerra, char *buf);
static uint16_t hu16_from_msg(char *buf, int msg)
{
return le16toh(*(uint16_t *)&buf[msg]);
}
static uint32_t hu32_from_msg(char *buf, int msg)
{
return le32toh(*(uint32_t *)&buf[msg]);
}
static uint64_t hu64_from_msg(char *buf, int msg)
{
return le64toh(*(uint64_t *)&buf[msg]);
}
static uint8_t u8_from_msg(char *buf, int msg)
{
return *(uint8_t *)&buf[msg];
}
static void msg_from_hu16(char *buf, int msg, uint16_t val)
{
*(uint16_t *)&buf[msg] = htole16(val);
}
static void cta_parse_reqwork(struct cgpu_info *cointerra, struct cointerra_info *info,
char *buf)
{
uint16_t retwork;
retwork = hu16_from_msg(buf, CTA_REQWORK_REQUESTS);
applog(LOG_DEBUG, "%s %d: Request work message for %u items received",
cointerra->drv->name, cointerra->device_id, retwork);
mutex_lock(&info->lock);
info->requested = retwork;
/* Wake up the main scanwork loop since we need more
* work. */
pthread_cond_signal(&info->wake_cond);
mutex_unlock(&info->lock);
}
static void cta_parse_recvmatch(struct thr_info *thr, struct cgpu_info *cointerra,
struct cointerra_info *info, char *buf)
{
uint32_t timestamp_offset, mcu_tag;
uint16_t retwork;
struct work *work;
/* No endian switch needs doing here since it's sent and returned as
* the same 4 bytes */
retwork = *(uint16_t *)(&buf[CTA_DRIVER_TAG]);
mcu_tag = hu32_from_msg(buf, CTA_MCU_TAG);
applog(LOG_DEBUG, "%s %d: Match message for id 0x%04x MCU id 0x%08x received",
cointerra->drv->name, cointerra->device_id, retwork, mcu_tag);
work = clone_work_by_id(cointerra, retwork);
if (likely(work)) {
uint8_t wdiffbits = u8_from_msg(buf, CTA_WORK_DIFFBITS);
uint32_t nonce = hu32_from_msg(buf, CTA_MATCH_NONCE);
unsigned char rhash[32];
char outhash[16];
double wdiff;
bool ret;
timestamp_offset = hu32_from_msg(buf, CTA_MATCH_NOFFSET);
if (timestamp_offset) {
struct work *base_work = work;
work = copy_work_noffset(base_work, timestamp_offset);
free_work(base_work);
}
/* Test against the difficulty we asked for along with the work */
wdiff = bits_to_diff(wdiffbits);
ret = test_nonce_diff(work, nonce, wdiff);
if (opt_debug) {
/* Debugging, remove me */
swab256(rhash, work->hash);
__bin2hex(outhash, rhash, 8);
applog(LOG_DEBUG, "submit work %s 0x%04x 0x%08x %d 0x%08x",
outhash, retwork, mcu_tag, timestamp_offset, nonce);
}
if (likely(ret)) {
uint8_t asic, core, pipe, coreno;
int pipeno, bitchar, bitbit;
uint64_t hashes;
asic = u8_from_msg(buf, CTA_MCU_ASIC);
core = u8_from_msg(buf, CTA_MCU_CORE);
pipe = u8_from_msg(buf, CTA_MCU_PIPE);
pipeno = asic * 512 + core * 128 + pipe;
coreno = asic * 4 + core;
if (unlikely(asic > 1 || core > 3 || pipe > 127 || pipeno > 1023)) {
applog(LOG_WARNING, "%s %d: MCU invalid pipe asic %d core %d pipe %d",
cointerra->drv->name, cointerra->device_id, asic, core, pipe);
coreno = 0;
} else {
info->last_pipe_nonce[pipeno] = time(NULL);
bitchar = pipeno / 8;
bitbit = pipeno % 8;
info->pipe_bitmap[bitchar] |= 0x80 >> bitbit;
}
applog(LOG_DEBUG, "%s %d: Submitting tested work job_id %s work_id %u",
cointerra->drv->name, cointerra->device_id, work->job_id, work->subid);
ret = submit_tested_work(thr, work);
hashes = (uint64_t)wdiff * 0x100000000ull;
mutex_lock(&info->lock);
info->share_hashes += hashes;
info->tot_core_hashes[coreno] += hashes;
info->hashes += nonce;
mutex_unlock(&info->lock);
} else {
char sendbuf[CTA_MSG_SIZE];
applog(LOG_DEBUG, "%s %d: Notify bad match work",
cointerra->drv->name, cointerra->device_id);
if (opt_debug) {
uint64_t sdiff = share_diff(work);
unsigned char midstate[32], wdata[12];
char hexmidstate[68], hexwdata[28];
uint16_t wid;
memcpy(&wid, &info->work_id, 2);
flip32(midstate, work->midstate);
__bin2hex(hexmidstate, midstate, 32);
flip12(wdata, &work->data[64]);
__bin2hex(hexwdata, wdata, 12);
applog(LOG_DEBUG, "False match sent: work id %u midstate %s blkhdr %s",
wid, hexmidstate, hexwdata);
applog(LOG_DEBUG, "False match reports: work id 0x%04x MCU id 0x%08x work diff %.1f",
retwork, mcu_tag, wdiff);
applog(LOG_DEBUG, "False match tested: nonce 0x%08x noffset %d %s",
nonce, timestamp_offset, outhash);
applog(LOG_DEBUG, "False match devdiff set to %.1f share diff calc %"PRIu64,
work->device_diff, sdiff);
}
/* Tell the device we got a false match */
cta_gen_message(sendbuf, CTA_SEND_FMATCH);
memcpy(sendbuf + 3, buf, CTA_MSG_SIZE - 3);
cta_send_msg(cointerra, sendbuf);
}
free_work(work);
} else {
applog(LOG_INFO, "%s %d: Matching work id 0x%X %d not found", cointerra->drv->name,
cointerra->device_id, retwork, __LINE__);
inc_hw_errors(thr);
mutex_lock(&info->lock);
info->no_matching_work++;
mutex_unlock(&info->lock);
}
}
static void cta_parse_wdone(struct thr_info *thr, struct cgpu_info *cointerra,
struct cointerra_info *info, char *buf)
{
uint16_t retwork = *(uint16_t *)(&buf[CTA_DRIVER_TAG]);
struct work *work = take_work_by_id(cointerra, retwork);
uint64_t hashes;
if (likely(work))
free_work(work);
else {
applog(LOG_INFO, "%s %d: Done work not found id 0x%X %d",
cointerra->drv->name, cointerra->device_id, retwork, __LINE__);
inc_hw_errors(thr);
}
/* Removing hashes from work done message */
hashes = hu64_from_msg(buf, CTA_WDONE_NONCES);
if (unlikely(hashes > (61 * 0x100000000ull))) {
applog(LOG_INFO, "%s Invalid hash returned %"PRIu64"x %"PRIu64"x %"PRIu64"X",
__func__, info->hashes, hashes, hashes);
hashes = 0;
}
mutex_lock(&info->lock);
info->hashes += hashes;
mutex_unlock(&info->lock);
}
static void u16array_from_msg(uint16_t *u16, int entries, int var, char *buf)
{
int i, j;
for (i = 0, j = 0; i < entries; i++, j += sizeof(uint16_t))
u16[i] = hu16_from_msg(buf, var + j);
}
static void cta_parse_statread(struct cgpu_info *cointerra, struct cointerra_info *info,
char *buf)
{
float max_temp = 0;
int i;
mutex_lock(&info->lock);
u16array_from_msg(info->coretemp, CTA_CORES, CTA_STAT_CORETEMPS, buf);
info->ambtemp_low = hu16_from_msg(buf, CTA_STAT_AMBTEMP_LOW);
info->ambtemp_avg = hu16_from_msg(buf, CTA_STAT_AMBTEMP_AVG);
info->ambtemp_high = hu16_from_msg(buf, CTA_STAT_AMBTEMP_HIGH);
u16array_from_msg(info->pump_tachs, CTA_PUMPS, CTA_STAT_PUMP_TACHS, buf);
u16array_from_msg(info->fan_tachs, CTA_FANS, CTA_STAT_FAN_TACHS, buf);
u16array_from_msg(info->corevolts, CTA_CORES, CTA_STAT_CORE_VOLTS, buf);
info->volts33 = hu16_from_msg(buf, CTA_STAT_VOLTS33);
info->volts12 = hu16_from_msg(buf, CTA_STAT_VOLTS12);
info->inactive = hu16_from_msg(buf, CTA_STAT_INACTIVE);
info->active = hu16_from_msg(buf, CTA_STAT_ACTIVE);
mutex_unlock(&info->lock);
for (i = 0; i < CTA_CORES; i++) {
if (info->coretemp[i] > max_temp)
max_temp = info->coretemp[i];
}
max_temp /= 100.0;
/* Store the max temperature in the cgpu struct as an exponentially
* changing value. */
cointerra->temp = cointerra->temp * 0.63 + max_temp * 0.37;
}
static void u8array_from_msg(uint8_t *u8, int entries, int var, char *buf)
{
int i;
for (i = 0; i < entries; i++)
u8[i] = u8_from_msg(buf, var + i);
}
static void cta_parse_statset(struct cointerra_info *info, char *buf)
{
mutex_lock(&info->lock);
u8array_from_msg(info->coreperf, CTA_CORES, CTA_STAT_PERFMODE, buf);
u8array_from_msg(info->fanspeed, CTA_FANS, CTA_STAT_FANSPEEDS, buf);
info->dies_active = u8_from_msg(buf, CTA_STAT_DIES_ACTIVE);
u8array_from_msg(info->pipes_enabled, CTA_CORES, CTA_STAT_PIPES_ENABLED, buf);
u16array_from_msg(info->corefreqs, CTA_CORES, CTA_STAT_CORE_FREQS, buf);
info->uptime = hu32_from_msg(buf,CTA_STAT_UPTIME);
mutex_unlock(&info->lock);
}
static void cta_parse_info(struct cgpu_info *cointerra, struct cointerra_info *info,
char *buf)
{
mutex_lock(&info->lock);
info->hwrev = hu64_from_msg(buf, CTA_INFO_HWREV);
info->serial = hu32_from_msg(buf, CTA_INFO_SERNO);
info->asics = u8_from_msg(buf, CTA_INFO_NUMASICS);
info->dies = u8_from_msg(buf, CTA_INFO_NUMDIES);
info->cores = hu16_from_msg(buf, CTA_INFO_NUMCORES);
info->board_number = u8_from_msg(buf, CTA_INFO_BOARDNUMBER);
info->fwrev[0] = u8_from_msg(buf, CTA_INFO_FWREV_MAJ);
info->fwrev[1] = u8_from_msg(buf, CTA_INFO_FWREV_MIN);
info->fwrev[2] = u8_from_msg(buf, CTA_INFO_FWREV_MIC);
info->fw_year = hu16_from_msg(buf, CTA_INFO_FWDATE_YEAR);
info->fw_month = u8_from_msg(buf, CTA_INFO_FWDATE_MONTH);
info->fw_day = u8_from_msg(buf, CTA_INFO_FWDATE_DAY);
info->init_diffbits = u8_from_msg(buf, CTA_INFO_INITDIFFBITS);
info->min_diffbits = u8_from_msg(buf, CTA_INFO_MINDIFFBITS);
info->max_diffbits = u8_from_msg(buf, CTA_INFO_MAXDIFFBITS);
mutex_unlock(&info->lock);
if (!cointerra->unique_id) {
uint32_t b32 = htobe32(info->serial);
cointerra->unique_id = bin2hex((unsigned char *)&b32, 4);
}
}
static void cta_parse_rdone(struct cgpu_info *cointerra, struct cointerra_info *info,
char *buf)
{
uint8_t reset_type, diffbits;
uint64_t wdone;
reset_type = buf[CTA_RESET_TYPE];
diffbits = buf[CTA_RESET_DIFF];
wdone = hu64_from_msg(buf, CTA_WDONE_NONCES);
applog(LOG_INFO, "%s %d: Reset done type %u message %u diffbits %"PRIu64" done received",
cointerra->drv->name, cointerra->device_id, reset_type, diffbits, wdone);
if (wdone) {
applog(LOG_INFO, "%s %d: Reset done type %u message %u diffbits %"PRIu64" done received",
cointerra->drv->name, cointerra->device_id, reset_type, diffbits, wdone);
mutex_lock(&info->lock);
info->hashes += wdone;
mutex_unlock(&info->lock);
}
/* Note that the cgsem that is posted here must not be waited on while
* holding the info->lock to not get into a livelock since this
* function also grabs the lock first and it's always best to not sleep
* while holding a lock. */
if (reset_type == CTA_RESET_NEW) {
cta_clear_work(cointerra);
/* Tell reset sender that the reset is complete
* and it may resume. */
cgsem_post(&info->reset_sem);
}
}
static void cta_zero_stats(struct cgpu_info *cointerra);
static void cta_parse_debug(struct cointerra_info *info, char *buf)
{
mutex_lock(&info->lock);
info->tot_underruns = hu16_from_msg(buf, CTA_STAT_UNDERRUNS);
u16array_from_msg(info->tot_hw_errors, CTA_CORES, CTA_STAT_HW_ERRORS, buf);
info->tot_hashes = hu64_from_msg(buf, CTA_STAT_HASHES);
info->tot_flushed_hashes = hu64_from_msg(buf, CTA_STAT_FLUSHED_HASHES);
info->autovoltage = u8_from_msg(buf, CTA_STAT_AUTOVOLTAGE);
info->current_ps_percent = u8_from_msg(buf, CTA_STAT_POWER_PERCENT);
info->power_used = hu16_from_msg(buf,CTA_STAT_POWER_USED);
info->power_voltage = hu16_from_msg(buf,CTA_STAT_VOLTAGE);
info->ipower_used = hu16_from_msg(buf,CTA_STAT_IPOWER_USED);
info->ipower_voltage = hu16_from_msg(buf,CTA_STAT_IVOLTAGE);
info->power_temps[0] = hu16_from_msg(buf,CTA_STAT_PS_TEMP1);
info->power_temps[1] = hu16_from_msg(buf,CTA_STAT_PS_TEMP2);
mutex_unlock(&info->lock);
/* Autovoltage is positive only once at startup and eventually drops
* to zero. After that time we reset the stats since they're unreliable
* till then. */
if (unlikely(!info->autovoltage_complete && !info->autovoltage)) {
struct cgpu_info *cointerra = info->thr->cgpu;
info->autovoltage_complete = true;
cgtime(&cointerra->dev_start_tv);
cta_zero_stats(cointerra);
cointerra->total_mhashes = 0;
cointerra->accepted = 0;
cointerra->rejected = 0;
cointerra->hw_errors = 0;
cointerra->utility = 0.0;
cointerra->last_share_pool_time = 0;
cointerra->diff1 = 0;
cointerra->diff_accepted = 0;
cointerra->diff_rejected = 0;
cointerra->last_share_diff = 0;
}
}
static void cta_parse_msg(struct thr_info *thr, struct cgpu_info *cointerra,
struct cointerra_info *info, char *buf)
{
switch (buf[CTA_MSG_TYPE]) {
default:
case CTA_RECV_UNUSED:
applog(LOG_INFO, "%s %d: Unidentified message type %u",
cointerra->drv->name, cointerra->device_id, buf[CTA_MSG_TYPE]);
break;
case CTA_RECV_REQWORK:
cta_parse_reqwork(cointerra, info, buf);
break;
case CTA_RECV_MATCH:
cta_parse_recvmatch(thr, cointerra, info, buf);
break;
case CTA_RECV_WDONE:
applog(LOG_DEBUG, "%s %d: Work done message received",
cointerra->drv->name, cointerra->device_id);
cta_parse_wdone(thr, cointerra, info, buf);
break;
case CTA_RECV_STATREAD:
applog(LOG_DEBUG, "%s %d: Status readings message received",
cointerra->drv->name, cointerra->device_id);
cta_parse_statread(cointerra, info, buf);
break;
case CTA_RECV_STATSET:
applog(LOG_DEBUG, "%s %d: Status settings message received",
cointerra->drv->name, cointerra->device_id);
cta_parse_statset(info, buf);
break;
case CTA_RECV_INFO:
applog(LOG_DEBUG, "%s %d: Info message received",
cointerra->drv->name, cointerra->device_id);
cta_parse_info(cointerra, info, buf);
break;
case CTA_RECV_MSG:
applog(LOG_NOTICE, "%s %d: MSG: %s",
cointerra->drv->name, cointerra->device_id, &buf[CTA_MSG_RECVD]);
break;
case CTA_RECV_RDONE:
cta_parse_rdone(cointerra, info, buf);
break;
case CTA_RECV_STATDEBUG:
cta_parse_debug(info, buf);
break;
}
}
static void *cta_recv_thread(void *arg)
{
struct thr_info *thr = (struct thr_info *)arg;
struct cgpu_info *cointerra = thr->cgpu;
struct cointerra_info *info = cointerra->device_data;
char threadname[24];
int offset = 0;
snprintf(threadname, 24, "cta_recv/%d", cointerra->device_id);
RenameThread(threadname);
while (likely(!cointerra->shutdown)) {
char buf[CTA_READBUF_SIZE];
int amount, err;
if (unlikely(cointerra->usbinfo.nodev)) {
applog(LOG_DEBUG, "%s %d: Device disappeared, disabling recv thread",
cointerra->drv->name, cointerra->device_id);
break;
}
err = usb_read(cointerra, buf + offset, CTA_MSG_SIZE, &amount, C_CTA_READ);
if (err && err != LIBUSB_ERROR_TIMEOUT) {
applog(LOG_ERR, "%s %d: Read error %d, read %d", cointerra->drv->name,
cointerra->device_id, err, amount);
break;
}
offset += amount;
while (offset >= CTA_MSG_SIZE) {
char *msg = mystrstr(buf, offset, cointerra_hdr);
int begin;
if (unlikely(!msg)) {
applog(LOG_WARNING, "%s %d: No message header found, discarding buffer",
cointerra->drv->name, cointerra->device_id);
inc_hw_errors(thr);
/* Save the last byte in case it's the fist
* byte of a header. */
begin = CTA_MSG_SIZE - 1;
offset -= begin;
memmove(buf, buf + begin, offset);
continue;
}
if (unlikely(msg != buf)) {
begin = msg - buf;
applog(LOG_WARNING, "%s %d: Reads out of sync, discarding %d bytes",
cointerra->drv->name, cointerra->device_id, begin);
inc_hw_errors(thr);
offset -= begin;
memmove(buf, msg, offset);
if (offset < CTA_MSG_SIZE)
break;
}
/* We have enough buffer for a full message, parse now */
cta_parse_msg(thr, cointerra, info, msg);
offset -= CTA_MSG_SIZE;
if (offset > 0)
memmove(buf, buf + CTA_MSG_SIZE, offset);
}
}
return NULL;
}
static bool cta_send_msg(struct cgpu_info *cointerra, char *buf)
{
struct cointerra_info *info = cointerra->device_data;
int amount, err;
if (unlikely(cointerra->usbinfo.nodev))
return false;
/* Serialise usb writes to prevent overlap in case multiple threads
* send messages */
mutex_lock(&info->sendlock);
err = usb_write(cointerra, buf, CTA_MSG_SIZE, &amount, C_CTA_WRITE);
mutex_unlock(&info->sendlock);
if (unlikely(err || amount != CTA_MSG_SIZE)) {
applog(LOG_ERR, "%s %d: Write error %d, wrote %d of %d", cointerra->drv->name,
cointerra->device_id, err, amount, CTA_MSG_SIZE);
return false;
}
return true;
}
static bool cta_prepare(struct thr_info *thr)
{
struct cgpu_info *cointerra = thr->cgpu;
struct cointerra_info *info = calloc(sizeof(struct cointerra_info), 1);
char buf[CTA_MSG_SIZE];
if (unlikely(cointerra->usbinfo.nodev))
return false;
if (unlikely(!info))
quit(1, "Failed to calloc info in cta_detect_one");
cointerra->device_data = info;
/* Nominally set a requested value when starting, preempting the need
* for a req-work message. */
info->requested = CTA_MAX_QUEUE;
info->thr = thr;
mutex_init(&info->lock);
mutex_init(&info->sendlock);
if (unlikely(pthread_cond_init(&info->wake_cond, NULL)))
quit(1, "Failed to create cta pthread cond");
cgsem_init(&info->reset_sem);
if (pthread_create(&info->read_thr, NULL, cta_recv_thread, (void *)thr))
quit(1, "Failed to create cta_recv_thread");
/* Request a single status setting message */
cta_gen_message(buf, CTA_SEND_REQUEST);
msg_from_hu16(buf, CTA_REQ_MSGTYPE, CTA_RECV_STATSET);
msg_from_hu16(buf, CTA_REQ_INTERVAL, 0);
if (!cta_send_msg(cointerra, buf))
return false;
/* Request status debug messages every 60 seconds */
cta_gen_message(buf, CTA_SEND_REQUEST);
msg_from_hu16(buf, CTA_REQ_MSGTYPE, CTA_RECV_STATDEBUG);
msg_from_hu16(buf, CTA_REQ_INTERVAL, 6000);
if (!cta_send_msg(cointerra, buf))
return false;
cgtime(&info->core_hash_start);
return true;
}
static void cta_send_reset(struct cgpu_info *cointerra, struct cointerra_info *info,
uint8_t reset_type, uint8_t diffbits);
static void cta_flush_work(struct cgpu_info *cointerra);
/* *_fill and *_scanwork are serialised wrt to each other */
static bool cta_fill(struct cgpu_info *cointerra)
{
struct cointerra_info *info = cointerra->device_data;
bool ret = true;
char buf[CTA_MSG_SIZE];
struct work *work = NULL;
unsigned short nroll_limit;
uint32_t swab[8];
uint8_t diffbits;
//applog(LOG_WARNING, "%s %d: cta_fill %d", cointerra->drv->name, cointerra->device_id,__LINE__);
if (unlikely(info->thr->work_restart))
cta_flush_work(cointerra);
mutex_lock(&info->lock);
if (!info->requested)
goto out_unlock;
work = get_queued(cointerra);
if (unlikely(!work)) {
ret = false;
goto out_unlock;
}
if (--info->requested > 0)
ret = false;
/* It does not matter what endian this uint16_t is since it will be
* the same value on sending to the MC as returning in match/done. This
* will automatically wrap as a uint16_t. It cannot be zero for the MCU
* though. */
if (unlikely(++info->work_id == 0))
info->work_id = 1;
work->subid = info->work_id;
diffbits = diff_to_bits(work->device_diff);
cta_gen_message(buf, CTA_SEND_WORK);
memcpy(buf + CTA_DRIVER_TAG, &info->work_id, 2);
flip32(swab, work->midstate);
memcpy(buf + CTA_WORK_MIDSTATE, swab, 32);
flip12(swab, &work->data[64]);
memcpy(buf + CTA_WORK_DATA, swab, 12);
nroll_limit = htole16(work->drv_rolllimit);
memcpy(buf + CTA_WORK_NROLL, &nroll_limit, 2);
memcpy(buf + CTA_WORK_DIFFBITS, &diffbits, 1);
out_unlock:
mutex_unlock(&info->lock);
if (work) {
cgtime(&work->tv_work_start);
applog(LOG_DEBUG, "%s %d: Sending work job_id %s work_id %u", cointerra->drv->name,
cointerra->device_id, work->job_id, work->subid);
if (unlikely(!cta_send_msg(cointerra, buf))) {
work_completed(cointerra, work);
applog(LOG_INFO, "%s %d: Failed to send work",
cointerra->drv->name, cointerra->device_id);
/* The device will fail after this */
}
}
return ret;
}
static void cta_send_reset(struct cgpu_info *cointerra, struct cointerra_info *info,
uint8_t reset_type, uint8_t diffbits)
{
char buf[CTA_MSG_SIZE];
int ret, retries = 0;
/* Clear any accumulated messages in case we've gotten out of sync. */
cgsem_reset(&info->reset_sem);
resend:
cta_gen_message(buf, CTA_SEND_RESET);
buf[CTA_RESET_TYPE] = reset_type;
buf[CTA_RESET_LOAD] = opt_cta_load ? opt_cta_load : 255;
buf[CTA_RESET_PSLOAD] = opt_ps_load;
applog(LOG_INFO, "%s %d: Sending Reset type %u with diffbits %u", cointerra->drv->name,
cointerra->device_id, reset_type, diffbits);
cta_send_msg(cointerra, buf);
/* Wait for read thread to parse a reset message and signal us we may
* return to submitting other messages. Use a timeout in case we have
* a problem and the reset done message never returns. */
if (reset_type == CTA_RESET_NEW) {
ret = cgsem_mswait(&info->reset_sem, CTA_RESET_TIMEOUT);
if (ret) {
if (++retries < 3) {
applog(LOG_INFO, "%s %d: Timed out waiting for reset done msg, retrying",
cointerra->drv->name, cointerra->device_id);
goto resend;
}
applog(LOG_WARNING, "%s %d: Timed out waiting for reset done msg",
cointerra->drv->name, cointerra->device_id);
}
/* Good place to flush any work we have */
flush_queue(cointerra);
}
}
static void cta_flush_work(struct cgpu_info *cointerra)
{
struct cointerra_info *info = cointerra->device_data;
applog(LOG_INFO, "%s %d: cta_flush_work %d", cointerra->drv->name, cointerra->device_id,
__LINE__);
cta_send_reset(cointerra, info, CTA_RESET_NEW, 0);
info->thr->work_restart = false;
}
static void cta_update_work(struct cgpu_info *cointerra)
{
struct cointerra_info *info = cointerra->device_data;
applog(LOG_INFO, "%s %d: Update work", cointerra->drv->name, cointerra->device_id);
cta_send_reset(cointerra, info, CTA_RESET_UPDATE, 0);
}
static void cta_zero_corehashes(struct cointerra_info *info)
{
int i;
for (i = 0; i < CTA_CORES; i++)
info->tot_core_hashes[i] = 0;
cgtime(&info->core_hash_start);
}
/* Send per core hashrate calculations at regular intervals ~every 5 minutes */
static void cta_send_corehashes(struct cgpu_info *cointerra, struct cointerra_info *info,
double corehash_time)
{
uint16_t core_ghs[CTA_CORES];
double k[CTA_CORES];
char buf[CTA_MSG_SIZE];
int i, offset;
for (i = 0; i < CTA_CORES; i++) {
k[i] = (double)info->tot_core_hashes[i] / ((double)32 * (double)0x100000000ull);
k[i] = sqrt(k[i]) + 1;
k[i] *= k[i];
k[i] = k[i] * 32 * ((double)0x100000000ull / (double)1000000000) / corehash_time;
core_ghs[i] = k[i];
}
cta_gen_message(buf, CTA_SEND_COREHASHRATE);
offset = CTA_CORE_HASHRATES;
for (i = 0; i < CTA_CORES; i++) {
msg_from_hu16(buf, offset, core_ghs[i]);
offset += 2; // uint16_t
}
cta_send_msg(cointerra, buf);
}
static int64_t cta_scanwork(struct thr_info *thr)
{
struct cgpu_info *cointerra = thr->cgpu;
struct cointerra_info *info = cointerra->device_data;
double corehash_time;
struct timeval now;
int64_t hashes;
applog(LOG_DEBUG, "%s %d: cta_scanwork %d", cointerra->drv->name, cointerra->device_id,__LINE__);
if (unlikely(cointerra->usbinfo.nodev)) {
hashes = -1;
goto out;
}
cgtime(&now);
if (unlikely(thr->work_restart)) {
applog(LOG_INFO, "%s %d: Flush work line %d",
cointerra->drv->name, cointerra->device_id,__LINE__);
cta_flush_work(cointerra);
} else {
struct timespec abstime, tsdiff = {0, 500000000};
time_t now_t;
int i;
timeval_to_spec(&abstime, &now);
timeraddspec(&abstime, &tsdiff);
/* Discard work that was started more than 5 minutes ago as