thodg/cgminer/driver-cointerra.c

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• Hash : e95e25a4
  Author :
  Date : 2014-03-29T10:05:25
  

  Frequency only needs 3 digits for cointerra statline

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• driver-cointerra.c

• /*
   * Copyright 2013-2014 Con Kolivas <kernel@kolivas.org>
   *
   * 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
  		 * a safety precaution backup in case the hardware failed to
  		 * return a work done message for some work items. */
  		age_queued_work(cointerra, 300.0);
  
  		/* Each core should be 1.7MH so at max diff of 32 should
  		 * average a share every ~80 seconds.Use this opportunity to
  		 * unset the bits in any pipes that have not returned a valid
  		 * nonce for over 30 full nonce ranges or 2400s. */
  		now_t = time(NULL);
  		for (i = 0; i < 1024; i++) {
  			if (unlikely(now_t > info->last_pipe_nonce[i] + 2400)) {
  				int bitchar = i / 8, bitbit = i % 8;
  
  				info->pipe_bitmap[bitchar] &= ~(0x80 >> bitbit);
  			}
  		}
  
  		/* Sleep for up to 0.5 seconds, waking if we need work or
  		 * have received a restart message. */
  		mutex_lock(&info->lock);
  		pthread_cond_timedwait(&info->wake_cond, &info->lock, &abstime);
  		mutex_unlock(&info->lock);
  
  		if (thr->work_restart) {
  			applog(LOG_INFO, "%s %d: Flush work line %d",
  			       cointerra->drv->name, cointerra->device_id,__LINE__);
  			cta_flush_work(cointerra);
  		}
  	}
  
  	corehash_time = tdiff(&now, &info->core_hash_start);
  	if (corehash_time > 300) {
  		cta_send_corehashes(cointerra, info, corehash_time);
  		cta_zero_corehashes(info);
  	}
  
  	mutex_lock(&info->lock);
  	hashes = info->share_hashes;
  	info->tot_share_hashes += info->share_hashes;
  	info->tot_calc_hashes += info->hashes;
  	info->hashes = info->share_hashes = 0;
  	mutex_unlock(&info->lock);
  
  	if (unlikely(cointerra->usbinfo.nodev))
  		hashes = -1;
  out:
  	return hashes;
  }
  
  /* This is used for a work restart. We don't actually perform the work restart
   * here but wake up the scanwork loop if it's waiting on the conditional so
   * that it can test for the restart message. */
  static void cta_wake(struct cgpu_info *cointerra)
  {
  	struct cointerra_info *info = cointerra->device_data;
  
  	mutex_lock(&info->lock);
  	pthread_cond_signal(&info->wake_cond);
  	mutex_unlock(&info->lock);
  }
  
  static void cta_shutdown(struct thr_info *thr)
  {
  	struct cgpu_info *cointerra = thr->cgpu;
  
  	cta_close(cointerra);
  }
  
  static void cta_zero_stats(struct cgpu_info *cointerra)
  {
  	struct cointerra_info *info = cointerra->device_data;
  
  	info->tot_calc_hashes = 0;
  	info->tot_reset_hashes = info->tot_hashes;
  	info->tot_share_hashes = 0;
  	cta_zero_corehashes(info);
  }
  
  static int bits_set(char v)
  {
  	int c;
  
  	for (c = 0; v; c++)
  		v &= v - 1;
  	return c;
  }
  
  static struct api_data *cta_api_stats(struct cgpu_info *cgpu)
  {
  	struct api_data *root = NULL;
  	struct cointerra_info *info = cgpu->device_data;
  	double dev_runtime = cgpu_runtime(cgpu);
  	int i, asic, core, coreno = 0;
  	struct timeval now;
  	char bitmaphex[36];
  	uint64_t ghs, val;
  	char buf[64];
  
  	/* Info data */
  	root = api_add_uint16(root, "HW Revision", &info->hwrev, false);
  	root = api_add_uint32(root, "Serial", &info->serial, false);
  	root = api_add_uint8(root, "Asics", &info->asics, false);
  	root = api_add_uint8(root, "Dies", &info->dies, false);
  	root = api_add_uint16(root, "Cores", &info->cores, false);
  	root = api_add_uint8(root, "Board number", &info->board_number, false);
  	sprintf(buf, "%u.%u.%u", info->fwrev[0], info->fwrev[1], info->fwrev[2]);
  	root = api_add_string(root, "FW Revision", buf, true);
  	sprintf(buf, "%04u-%02u-%02u", info->fw_year, info->fw_month, info->fw_day);
  	root = api_add_string(root, "FW Date", buf, true);
  	root = api_add_uint8(root, "Init diffbits", &info->init_diffbits, false);
  	root = api_add_uint8(root, "Min diffbits", &info->min_diffbits, false);
  	root = api_add_uint8(root, "Max diffbits", &info->max_diffbits, false);
  
  	/* Status readings */
  	for (i = 0; i < CTA_CORES; i++) {
  		sprintf(buf, "CoreTemp%d", i);
  		root = api_add_int16(root, buf, &info->coretemp[i], false);
  	}
  	root = api_add_int16(root, "Ambient Low", &info->ambtemp_low, false);
  	root = api_add_int16(root, "Ambient Avg", &info->ambtemp_avg, false);
  	root = api_add_int16(root, "Ambient High", &info->ambtemp_high, false);
  	for (i = 0; i < CTA_PUMPS; i++) {
  		sprintf(buf, "PumpRPM%d", i);
  		root = api_add_uint16(root, buf, &info->pump_tachs[i], false);
  	}
  	for (i = 0; i < CTA_FANS; i++) {
  		sprintf(buf, "FanRPM%d", i);
  		root = api_add_uint16(root, buf, &info->fan_tachs[i], false);
  	}
  	for (i = 0; i < CTA_CORES; i++) {
  		sprintf(buf, "CoreFreqs%d", i);
  		root = api_add_uint16(root, buf, &info->corefreqs[i], false);
  	}
  
  	for (i = 0; i < CTA_CORES; i++) {
  		sprintf(buf, "CoreVolts%d", i);
  		root = api_add_uint16(root, buf, &info->corevolts[i], false);
  	}
  	root = api_add_uint16(root, "Volts3.3", &info->volts33, false);
  	root = api_add_uint16(root, "Volts12", &info->volts12, false);
  	root = api_add_uint16(root, "Inactive", &info->inactive, false);
  	root = api_add_uint16(root, "Active", &info->active, false);
  
  	/* Status settings */
  	for (i = 0; i < CTA_CORES; i++) {
  		sprintf(buf, "CorePerfMode%d", i);
  		root = api_add_uint8(root, buf, &info->coreperf[i], false);
  	}
  	for (i = 0; i < CTA_FANS; i++) {
  		sprintf(buf, "FanSpeed%d", i);
  		root = api_add_uint8(root, buf, &info->fanspeed[i], false);
  	}
  	root = api_add_uint8(root, "DiesActive", &info->dies_active, false);
  	for (i = 0; i < CTA_CORES; i++) {
  		sprintf(buf, "PipesEnabled%d", i);
  		root = api_add_uint8(root, buf, &info->pipes_enabled[i], false);
  	}
  
  	/* Status debug */
  	root = api_add_int(root, "Underruns", &info->tot_underruns, false);
  	for (i = 0; i < CTA_CORES; i++) {
  		sprintf(buf, "HWErrors%d", i);
  		root = api_add_uint16(root, buf, &info->tot_hw_errors[i], false);
  	}
  	ghs = info->tot_calc_hashes / dev_runtime;
  	root = api_add_uint64(root, "Calc hashrate", &ghs, true);
  	ghs = (info->tot_hashes - info->tot_reset_hashes) / dev_runtime;
  	root = api_add_uint64(root, "Hashrate", &ghs, true);
  	ghs = info->tot_share_hashes / dev_runtime;
  	root = api_add_uint64(root, "Share hashrate", &ghs, true);
  	root = api_add_uint64(root, "Total calc hashes", &info->tot_calc_hashes, false);
  	ghs = info->tot_hashes - info->tot_reset_hashes;
  	root = api_add_uint64(root, "Total hashes", &ghs, true);
  	root = api_add_uint64(root, "Total raw hashes", &info->tot_hashes, false);
  	root = api_add_uint64(root, "Total share hashes", &info->tot_share_hashes, false);
  	root = api_add_uint64(root, "Total flushed hashes", &info->tot_flushed_hashes, false);
  	val = cgpu->diff_accepted * 0x100000000ull;
  	root = api_add_uint64(root, "Accepted hashes", &val, true);
  	ghs = val / dev_runtime;
  	root = api_add_uint64(root, "Accepted hashrate", &ghs, true);
  	val = cgpu->diff_rejected * 0x100000000ull;
  	root = api_add_uint64(root, "Rejected hashes", &val, true);
  	ghs = val / dev_runtime;
  	root = api_add_uint64(root, "Rejected hashrate", &ghs, true);
  
  	cgtime(&now);
  	dev_runtime = tdiff(&now, &info->core_hash_start);
  	if (dev_runtime < 1)
  		dev_runtime = 1;
  	for (i = 0; i < CTA_CORES; i++) {
  		sprintf(buf, "Core%d hashrate", i);
  		ghs = info->tot_core_hashes[i] / dev_runtime;
  		root = api_add_uint64(root, buf, &ghs, true);
  	}
  	root = api_add_uint32(root, "Uptime",&info->uptime,false);
  	for (asic = 0; asic < 2; asic++) {
  		for (core = 0; core < 4; core++) {
  			char bitmapcount[40], asiccore[12];
  			int count = 0;
  
  			sprintf(asiccore, "Asic%dCore%d", asic, core);
  			__bin2hex(bitmaphex, &info->pipe_bitmap[coreno], 16);
  			for (i = coreno; i < coreno + 16; i++)
  				count += bits_set(info->pipe_bitmap[i]);
  			snprintf(bitmapcount, 40, "%d:%s", count, bitmaphex);
  			root = api_add_string(root, asiccore, bitmapcount, true);
  			coreno += 16;
  		}
  	}
  	root = api_add_uint8(root, "AV", &info->autovoltage, false);
  	root = api_add_uint8(root, "Power Supply Percent", &info->current_ps_percent, false);
  	root = api_add_uint16(root, "Power Used", &info->power_used, false);
  	root = api_add_uint16(root, "IOUT", &info->power_used, false);
  	root = api_add_uint16(root, "VOUT", &info->power_voltage, false);
  	root = api_add_uint16(root, "IIN", &info->ipower_used, false);
  	root = api_add_uint16(root, "VIN", &info->ipower_voltage, false);
  	root = api_add_uint16(root, "PSTemp1", &info->power_temps[0], false);
  	root = api_add_uint16(root, "PSTemp2", &info->power_temps[1], false);
  
  	return root;
  }
  
  static void cta_statline_before(char *buf, size_t bufsiz, struct cgpu_info *cointerra)
  {
  	struct cointerra_info *info = cointerra->device_data;
  	double max_volt = 0;
  	int freq = 0, i;
  
  	for (i = 0; i < CTA_CORES; i++) {
  		if (info->corevolts[i] > max_volt)
  			max_volt = info->corevolts[i];
  		if (info->corefreqs[i] > freq)
  			freq = info->corefreqs[i];
  	}
  	max_volt /= 1000;
  
  	tailsprintf(buf, bufsiz, "%3dMHz %3.1fC %3.2fV", freq, cointerra->temp, max_volt);
  }
  
  struct device_drv cointerra_drv = {
  	.drv_id = DRIVER_cointerra,
  	.dname = "cointerra",
  	.name = "CTA",
  	.drv_detect = cta_detect,
  	.thread_prepare = cta_prepare,
  	.hash_work = hash_queued_work,
  	.queue_full = cta_fill,
  	.update_work = cta_update_work,
  	.scanwork = cta_scanwork,
  	.flush_work = cta_wake,
  	.get_api_stats = cta_api_stats,
  	.get_statline_before = cta_statline_before,
  	.thread_shutdown = cta_shutdown,
  	.zero_stats = cta_zero_stats,
  	.max_diff = 32, // Set it below the actual limit to check nonces
  };
  

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