driver-opencl.c

/*
 * Copyright 2011-2012 Con Kolivas
 * Copyright 2011-2012 Luke Dashjr
 * Copyright 2010 Jeff Garzik
 *
 * 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"

#ifdef HAVE_CURSES
#include <curses.h>
#endif

#include <string.h>
#include <stdbool.h>
#include <stdint.h>
#include <signal.h>
#include <sys/types.h>

#ifndef WIN32
#include <sys/resource.h>
#endif
#include <ccan/opt/opt.h>

#include "compat.h"
#include "miner.h"
#include "config_parser.h"
#include "driver-opencl.h"
#include "findnonce.h"
#include "ocl.h"
#include "adl.h"
#include "util.h"
#include "sysfs-gpu-controls.h"

#include "algorithm/equihash.h"

/* TODO: cleanup externals ********************/

#ifdef HAVE_CURSES
extern WINDOW *mainwin, *statuswin, *logwin;
extern void enable_curses(void);
#endif

extern int mining_threads;
extern double total_secs;
extern int opt_g_threads;
extern bool opt_loginput;
extern char *opt_kernel_path;
extern int gpur_thr_id;
extern bool opt_noadl;

extern void *miner_thread(void *userdata);
extern int dev_from_id(int thr_id);
extern void decay_time(double *f, double fadd);

/**********************************************/

char *set_vector(char *arg)
{
  int i, val = 0, device = 0;
  char *nextptr;

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set vector";
  val = atoi(nextptr);
  if (val != 1 && val != 2 && val != 4)
    return "Invalid value passed to set_vector";

  gpus[device++].vwidth = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);
    if (val != 1 && val != 2 && val != 4)
      return "Invalid value passed to set_vector";

    gpus[device++].vwidth = val;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++)
      gpus[i].vwidth = gpus[0].vwidth;
  }

  return NULL;
}

char *set_worksize(const char *arg)
{
  int i, val = 0, device = 0;
  char *tmpstr = strdup(arg);
  char *nextptr;

  if ((nextptr = strtok(tmpstr, ",")) == NULL) {
    free(tmpstr);
    return "Invalid parameters for set work size";
  }

  do {
    val = atoi(nextptr);

    if (val < 1 || val > 9999) {
      free(tmpstr);
      return "Invalid value passed to set_worksize";
    }

    applog(LOG_DEBUG, "GPU %d Worksize set to %u.", device, val);
    gpus[device++].work_size = val;
  } while ((nextptr = strtok(NULL, ",")) != NULL);

  // if only 1 worksize was passed, assign the same worksize for all remaining GPUs
  if (device == 1) {
    for (i = device; i < total_devices; ++i) {
      gpus[i].work_size = gpus[0].work_size;
      applog(LOG_DEBUG, "GPU %d Worksize set to %u.", i, gpus[i].work_size);
    }
  }

  free(tmpstr);
  return NULL;
}

char *set_shaders(char *arg)
{
  int i, val = 0, device = 0;
  char *nextptr;

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set lookup gap";
  val = atoi(nextptr);

  gpus[device++].shaders = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);

    gpus[device++].shaders = val;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++)
      gpus[i].shaders = gpus[0].shaders;
  }

  return NULL;
}

char *set_lookup_gap(char *arg)
{
  int i, val = 0, device = 0;
  char *nextptr;

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set lookup gap";
  val = atoi(nextptr);

  gpus[device++].opt_lg = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);

    gpus[device++].opt_lg = val;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++)
      gpus[i].opt_lg = gpus[0].opt_lg;
  }

  return NULL;
}

char *set_thread_concurrency(const char *arg)
{
  int i, device = 0;
  size_t val = 0;
  char *tmpstr = strdup(arg);
  char *nextptr;

  // empty string - use 0 and let algo autodetect the TC
  if (empty_string(tmpstr)) {
    applog(LOG_DEBUG, "GPU %d Thread Concurrency set to %lu.", device, val);
    gpus[device++].opt_tc = val;
  }
  // not empty string
  else {
    if ((nextptr = strtok(tmpstr, ",")) == NULL) {
      free(tmpstr);
      return "Invalid parameters for set_thread_concurrency";
    }

    do {
      val = (unsigned long)atol(nextptr);

      applog(LOG_DEBUG, "GPU %d Thread Concurrency set to %lu.", device, val);
      gpus[device++].opt_tc = val;
    } while ((nextptr = strtok(NULL, ",")) != NULL);
  }

  // if only 1 TC was passed, assign the same worksize for all remaining GPUs
  if (device == 1) {
    for (i = device; i < total_devices; ++i) {
      gpus[i].opt_tc = gpus[0].opt_tc;
      applog(LOG_DEBUG, "GPU %d Thread Concurrency set to %lu.", i, gpus[i].opt_tc);
    }
  }

  free(tmpstr);
  return NULL;
}

/* This function allows us to map an adl device to an opencl device for when
 * simple enumeration has failed to match them. */
char *set_gpu_map(char *arg)
{
  int val1 = 0, val2 = 0;
  char *nextptr;

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set gpu map";
  if (sscanf(arg, "%d:%d", &val1, &val2) != 2)
    return "Invalid description for map pair";
  if (val1 < 0 || val1 > MAX_GPUDEVICES || val2 < 0 || val2 > MAX_GPUDEVICES)
    return "Invalid value passed to set_gpu_map";

  gpus[val1].virtual_adl = val2;
  gpus[val1].mapped = true;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    if (sscanf(nextptr, "%d:%d", &val1, &val2) != 2)
      return "Invalid description for map pair";
    if (val1 < 0 || val1 > MAX_GPUDEVICES || val2 < 0 || val2 > MAX_GPUDEVICES)
      return "Invalid value passed to set_gpu_map";
    gpus[val1].virtual_adl = val2;
    gpus[val1].mapped = true;
  }

  return NULL;
}

char *set_gpu_threads(const char *_arg)
{
  int i, val = 1, device = 0;
  char *nextptr;
  char *arg = (char *)alloca(strlen(_arg) + 1);
  strcpy(arg, _arg);

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set_gpu_threads";
  val = atoi(nextptr);
  if (val < 1 || val > 20) // gpu_threads increase max value to 20
    return "Invalid value passed to set_gpu_threads";

  gpus[device++].threads = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);
    if (val < 1 || val > 20) // gpu_threads increase max value to 20
      return "Invalid value passed to set_gpu_threads";

    gpus[device++].threads = val;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++)
      gpus[i].threads = gpus[0].threads;
  }

  return NULL;
}

char *set_gpu_engine(const char *_arg)
{
  int i, val1 = 0, val2 = 0, device = 0;
  char *nextptr;
  char *arg = (char *)alloca(strlen(_arg) + 1);
  strcpy(arg, _arg);

  if (!(nextptr = strtok(arg, ",")))
    return "Invalid parameters for set gpu engine";

  do {
    get_intrange(nextptr, &val1, &val2);
    if (val1 < 0 || val1 > 9999 || val2 < 0 || val2 > 9999)
      return "Invalid value passed to set_gpu_engine";

    gpus[device].min_engine = val1;
    gpus[device].gpu_engine = val2;

    //also set adl settings otherwise range will never properly be applied
    //since min_engine/gpu_engine are only called during init_adl() at startup
    gpus[device].adl.minspeed = val1 * 100;
    gpus[device].adl.maxspeed = val2 * 100;

    device++;
  } while ((nextptr = strtok(NULL, ",")) != NULL);

  //if only 1 range passed, apply to all gpus
  if (device == 1) {
    for (i = 1; i < MAX_GPUDEVICES; i++) {
      gpus[i].min_engine = gpus[0].min_engine;
      gpus[i].gpu_engine = gpus[0].gpu_engine;

      //set adl values
      gpus[i].adl.minspeed = val1 * 100;
      gpus[i].adl.maxspeed = val2 * 100;
    }
  }

  return NULL;
}

char *set_gpu_fan(const char *_arg)
{
  int i, val1 = 0, val2 = 0, device = 0;
  char *nextptr;
  char *arg = (char *)alloca(strlen(_arg) + 1);
  strcpy(arg, _arg);

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set gpu fan";
  get_intrange(nextptr, &val1, &val2);
  if (val1 < 0 || val1 > 100 || val2 < 0 || val2 > 100)
    return "Invalid value passed to set_gpu_fan";

  gpus[device].min_fan = val1;
  gpus[device].gpu_fan = val2;
  device++;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    get_intrange(nextptr, &val1, &val2);
    if (val1 < 0 || val1 > 100 || val2 < 0 || val2 > 100)
      return "Invalid value passed to set_gpu_fan";

    gpus[device].min_fan = val1;
    gpus[device].gpu_fan = val2;
    device++;
  }

  if (device == 1) {
    for (i = 1; i < MAX_GPUDEVICES; i++) {
      gpus[i].min_fan = gpus[0].min_fan;
      gpus[i].gpu_fan = gpus[0].gpu_fan;
    }
  }

  return NULL;
}

char *set_gpu_memclock(const char *_arg)
{
  int i, val = 0, device = 0;
  char *nextptr;
  char *arg = (char *)alloca(strlen(_arg) + 1);
  strcpy(arg, _arg);

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set gpu memclock";
  val = atoi(nextptr);
  if (val < 0 || val >= 9999)
    return "Invalid value passed to set_gpu_memclock";

  gpus[device++].gpu_memclock = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);
    if (val < 0 || val >= 9999)
      return "Invalid value passed to set_gpu_memclock";

    gpus[device++].gpu_memclock = val;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++)
      gpus[i].gpu_memclock = gpus[0].gpu_memclock;
  }

  return NULL;
}

char *set_gpu_memdiff(char *arg)
{
  int i, val = 0, device = 0;
  char *nextptr;

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set gpu memdiff";
  val = atoi(nextptr);
  if (val < -9999 || val > 9999)
    return "Invalid value passed to set_gpu_memdiff";

  gpus[device++].gpu_memdiff = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);
    if (val < -9999 || val > 9999)
      return "Invalid value passed to set_gpu_memdiff";

    gpus[device++].gpu_memdiff = val;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++)
      gpus[i].gpu_memdiff = gpus[0].gpu_memdiff;
  }

  return NULL;
}

char *set_gpu_powertune(char *arg)
{
  int i, val = 0, device = 0;
  char *nextptr;

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set gpu powertune";
  val = atoi(nextptr);
  if (val < -99 || val > 499)
    return "Invalid value passed to set_gpu_powertune";

  gpus[device++].gpu_powertune = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    nextptr[-1] = ',';
    val = atoi(nextptr);
    if (val < -99 || val > 499)
      return "Invalid value passed to set_gpu_powertune";

    gpus[device++].gpu_powertune = val;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++)
      gpus[i].gpu_powertune = gpus[0].gpu_powertune;
  }

  return NULL;
}

char *set_gpu_vddc(char *arg)
{
  int i, device = 0;
  float val = 0;
  char *nextptr;

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set gpu vddc";
  val = atof(nextptr);
  if (val < 0 || val >= 9999)
    return "Invalid value passed to set_gpu_vddc";

  gpus[device++].gpu_vddc = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atof(nextptr);
    if (val < 0 || val >= 9999)
      return "Invalid value passed to set_gpu_vddc";

    gpus[device++].gpu_vddc = val;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++)
      gpus[i].gpu_vddc = gpus[0].gpu_vddc;
  }

  return NULL;
}

char *set_temp_overheat(char *arg)
{
  int i, val = 0, device = 0, *to;
  char *nextptr;

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set temp overheat";
  val = atoi(nextptr);
  if (val < 0 || val > 200)
    return "Invalid value passed to set temp overheat";

  gpus[device].adl.overtemp = val;
  gpus[device++].sysfs_info.overheat_temp = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);
    if (val < 0 || val > 200)
      return "Invalid value passed to set temp overheat";

    gpus[device].adl.overtemp = val;
    gpus[device++].sysfs_info.overheat_temp = val;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++) {
      gpus[i].adl.overtemp = val;
      gpus[i].sysfs_info.overheat_temp = val;
    }
  }

  return NULL;
}

char *set_temp_target(char *arg)
{
  int i, val = 0, device = 0, *tt;
  char *nextptr;

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set temp target";
  val = atoi(nextptr);
  if (val < 0 || val > 200)
    return "Invalid value passed to set temp target";

  tt = &gpus[device].adl.targettemp;
  *tt = val;
  tt = &gpus[device++].sysfs_info.target_temp;
  *tt = val;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);
    if (val < 0 || val > 200)
      return "Invalid value passed to set temp target";

    tt = &gpus[device].adl.targettemp;
    *tt = val;
    tt = &gpus[device++].sysfs_info.target_temp;
    *tt = val;    
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++) {
      tt = &gpus[i].adl.targettemp;
      *tt = val;
      tt = &gpus[i].sysfs_info.target_temp;
      *tt = val;
    }
  }

  return NULL;
}

char *set_intensity(const char *_arg)
{
  int i, device = 0, *tt;
  char *nextptr, val = 0;
  char *arg = (char *)alloca(strlen(_arg) + 1);
  strcpy(arg, _arg);

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for set intensity";
  if (!strncasecmp(nextptr, "d", 1))
    gpus[device].dynamic = true;
  else {
    gpus[device].dynamic = false;
    val = atoi(nextptr);
    if (val == 0) return "disabled";
    if (val < MIN_INTENSITY || val > MAX_INTENSITY)
      return "Invalid value passed to set intensity";
    tt = &gpus[device].intensity;
    *tt = val;
    gpus[device].xintensity = 0; // Disable shader based intensity
    gpus[device].rawintensity = 0; // Disable raw intensity
  }

  device++;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    if (!strncasecmp(nextptr, "d", 1))
      gpus[device].dynamic = true;
    else {
      gpus[device].dynamic = false;
      val = atoi(nextptr);
      if (val == 0) return "disabled";
      if (val < MIN_INTENSITY || val > MAX_INTENSITY)
        return "Invalid value passed to set intensity";

      tt = &gpus[device].intensity;
      *tt = val;
      gpus[device].xintensity = 0; // Disable shader based intensity
      gpus[device].rawintensity = 0; // Disable raw intensity
    }
    device++;
  }
  if (device == 1) {
    for (i = device; i < MAX_GPUDEVICES; i++) {
      gpus[i].dynamic = gpus[0].dynamic;
      gpus[i].intensity = gpus[0].intensity;
      gpus[i].xintensity = 0; // Disable shader based intensity
      gpus[i].rawintensity = 0; // Disable raw intensity
    }
  }

  return NULL;
}

char *set_xintensity(const char *_arg)
{
  int i, device = 0, val = 0;
  char *nextptr;
  char *arg = (char *)alloca(strlen(_arg) + 1);
  strcpy(arg, _arg);

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for shader based intensity";
  val = atoi(nextptr);
  if (val == 0) return "disabled";
  if (val < MIN_XINTENSITY || val > MAX_XINTENSITY)
    return "Invalid value passed to set shader-based intensity";

  gpus[device].dynamic = false; // Disable dynamic intensity
  gpus[device].intensity = 0; // Disable regular intensity
  gpus[device].rawintensity = 0; // Disable raw intensity
  gpus[device].xintensity = val;
  device++;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);
    if (val == 0) return "disabled";
    if (val < MIN_XINTENSITY || val > MAX_XINTENSITY)
      return "Invalid value passed to set shader based intensity";
    gpus[device].dynamic = false; // Disable dynamic intensity
    gpus[device].intensity = 0; // Disable regular intensity
    gpus[device].rawintensity = 0; // Disable raw intensity
    gpus[device].xintensity = val;
    device++;
  }
  if (device == 1)
  for (i = device; i < MAX_GPUDEVICES; i++) {
    gpus[i].dynamic = gpus[0].dynamic;
    gpus[i].intensity = gpus[0].intensity;
    gpus[i].rawintensity = gpus[0].rawintensity;
    gpus[i].xintensity = gpus[0].xintensity;
  }

  return NULL;
}

char *set_rawintensity(const char *_arg)
{
  int i, device = 0, val = 0;
  char *nextptr;
  char *arg = (char *)alloca(strlen(_arg) + 1);
  strcpy(arg, _arg);

  nextptr = strtok(arg, ",");
  if (nextptr == NULL)
    return "Invalid parameters for raw intensity";
  val = atoi(nextptr);
  if (val == 0) return "disabled";
  if (val < MIN_RAWINTENSITY || val > MAX_RAWINTENSITY)
    return "Invalid value passed to set raw intensity";

  gpus[device].dynamic = false; // Disable dynamic intensity
  gpus[device].intensity = 0; // Disable regular intensity
  gpus[device].xintensity = 0; // Disable xintensity
  gpus[device].rawintensity = val;
  device++;

  while ((nextptr = strtok(NULL, ",")) != NULL) {
    val = atoi(nextptr);
    if (val == 0) return "disabled";
    if (val < MIN_RAWINTENSITY || val > MAX_RAWINTENSITY)
      return "Invalid value passed to set raw intensity";
    gpus[device].dynamic = false; // Disable dynamic intensity
    gpus[device].intensity = 0; // Disable regular intensity
    gpus[device].xintensity = 0; // Disable xintensity
    gpus[device].rawintensity = val;
    device++;
  }
  if (device == 1)
  for (i = device; i < MAX_GPUDEVICES; i++) {
    gpus[i].dynamic = gpus[0].dynamic;
    gpus[i].intensity = gpus[0].intensity;
    gpus[i].rawintensity = gpus[0].rawintensity;
    gpus[i].xintensity = gpus[0].xintensity;
  }

  return NULL;
}

void print_ndevs(int *ndevs)
{
  opt_verbose = true;
  opencl_drv.drv_detect();
  clear_adl(*ndevs);
  applog(LOG_INFO, "%i GPU devices max detected", *ndevs);
}

struct cgpu_info gpus[MAX_GPUDEVICES]; /* Maximum number apparently possible */
struct cgpu_info *cpus;

/* In dynamic mode, only the first thread of each device will be in use.
 * This potentially could start a thread that was stopped with the start-stop
 * options if one were to disable dynamic from the menu on a paused GPU */
void pause_dynamic_threads(int gpu)
{
  struct cgpu_info *cgpu = &gpus[gpu];
  int i;

  rd_lock(&mining_thr_lock);
  for (i = 1; i < cgpu->threads; i++) {
    struct thr_info *thr;

    thr = cgpu->thr[i];
    if (!thr->pause && cgpu->dynamic) {
      applog(LOG_WARNING, "Disabling extra threads due to dynamic mode.");
      applog(LOG_WARNING, "Tune dynamic intensity with --gpu-dyninterval");
    }

    thr->pause = cgpu->dynamic;
    if (!cgpu->dynamic && cgpu->deven != DEV_DISABLED)
      cgsem_post(&thr->sem);
  }
  rd_unlock(&mining_thr_lock);
}

#if defined(HAVE_CURSES)
void manage_gpu(void)
{
  struct thr_info *thr;
  int selected, gpu, i;
  char checkin[40];
  char input;

  if (!opt_g_threads) {
    applog(LOG_ERR, "opt_g_threads not set in manage_gpu()");
    return;
  }

  opt_loginput = true;
  immedok(logwin, true);
  clear_logwin();
retry: // TODO: refactor

  for (gpu = 0; gpu < nDevs; gpu++) {
    struct cgpu_info *cgpu = &gpus[gpu];
    double displayed_rolling, displayed_total;
    bool mhash_base = true;

    displayed_rolling = cgpu->rolling;
    displayed_total = cgpu->total_mhashes / total_secs;
    if (displayed_rolling < 1) {
      displayed_rolling *= 1000;
      displayed_total *= 1000;
      mhash_base = false;
    }

    wlog("GPU %d: %.1f / %.1f %sh/s | A:%d  R:%d  HW:%d  U:%.2f/m  I:%d  xI:%d  rI:%d\n",
      gpu, displayed_rolling, displayed_total, mhash_base ? "M" : "K",
      cgpu->accepted, cgpu->rejected, cgpu->hw_errors,
      cgpu->utility, cgpu->intensity, cgpu->xintensity, cgpu->rawintensity);

    if (gpus[gpu].has_adl || gpus[gpu].has_sysfs_hwcontrols) {
      int engineclock = 0, memclock = 0, activity = 0, fanspeed = 0, fanpercent = 0, powertune = 0;
      float temp = 0, vddc = 0;

      if (gpu_stats(gpu, &temp, &engineclock, &memclock, &vddc, &activity, &fanspeed, &fanpercent, &powertune)) {
        char logline[255];

        strcpy(logline, ""); // In case it has no data
        if (temp != -1)
          sprintf(logline, "%.1f C  ", temp);
        if (fanspeed != -1 || fanpercent != -1) {
          tailsprintf(logline, sizeof(logline), "F: ");
          if (fanpercent != -1)
            tailsprintf(logline, sizeof(logline), "%d%% ", fanpercent);
          if (fanspeed != -1)
            tailsprintf(logline, sizeof(logline), "(%d RPM) ", fanspeed);
          tailsprintf(logline, sizeof(logline), " ");
        }
        if (engineclock != -1)
          tailsprintf(logline, sizeof(logline), "E: %d MHz  ", engineclock);
        if (memclock != -1)
          tailsprintf(logline, sizeof(logline), "M: %d Mhz  ", memclock);
        if (vddc != -1)
          tailsprintf(logline, sizeof(logline), "V: %.3fV  ", vddc);
        if (activity != -1)
          tailsprintf(logline, sizeof(logline), "A: %d%%  ", activity);
        if (powertune != -1)
          tailsprintf(logline, sizeof(logline), "P: %d%%", powertune);
        tailsprintf(logline, sizeof(logline), "\n");
        _wlog(logline);
      }
    }
    wlog("Last initialised: %s\n", cgpu->init);

    rd_lock(&mining_thr_lock);
    for (i = 0; i < mining_threads; i++) {
      thr = mining_thr[i];
      if (thr->cgpu != cgpu)
        continue;
      get_datestamp(checkin, sizeof(checkin), &thr->last);
      displayed_rolling = thr->rolling;
      if (!mhash_base)
        displayed_rolling *= 1000;
      wlog("Thread %d: %.1f %sh/s %s ", i, displayed_rolling, mhash_base ? "M" : "K", cgpu->deven != DEV_DISABLED ? "Enabled" : "Disabled");
      switch (cgpu->status) {
      default:
      case LIFE_WELL:
        wlog("ALIVE");
        break;
      case LIFE_SICK:
        wlog("SICK reported in %s", checkin);
        break;
      case LIFE_DEAD:
        wlog("DEAD reported in %s", checkin);
        break;
      case LIFE_INIT:
      case LIFE_NOSTART:
        wlog("Never started");
        break;
      }
      if (thr->pause)
        wlog(" paused");
      wlog("\n");
    }
    rd_unlock(&mining_thr_lock);

    wlog("\n");
  }

  wlogprint("[E]nable  [D]isable  [R]estart GPU  %s\n", adl_active ? "[C]hange settings" : "");
  wlogprint("[I]ntensity  E[x]perimental intensity  R[a]w Intensity\n");

  wlogprint("Or press any other key to continue\n");
  logwin_update();
  input = getch();

  if (nDevs == 1)
    selected = 0;
  else
    selected = -1;
  if (!strncasecmp(&input, "e", 1)) {
    struct cgpu_info *cgpu;

    if (selected)
      selected = curses_int("Select GPU to enable");
    if (selected < 0 || selected >= nDevs) {
      wlogprint("Invalid selection\n");
      goto retry;
    }
    if (gpus[selected].deven != DEV_DISABLED) {
      wlogprint("Device already enabled\n");
      goto retry;
    }
    gpus[selected].deven = DEV_ENABLED;
    rd_lock(&mining_thr_lock);
    for (i = 0; i < mining_threads; ++i) {
      thr = mining_thr[i];
      cgpu = thr->cgpu;
      if (cgpu->drv->drv_id != DRIVER_opencl)
        continue;
      if (dev_from_id(i) != selected)
        continue;
      if (cgpu->status != LIFE_WELL) {
        wlogprint("Must restart device before enabling it");
        goto retry;
      }
      applog(LOG_DEBUG, "Pushing sem post to thread %d", thr->id);

      cgsem_post(&thr->sem);
    }
    rd_unlock(&mining_thr_lock);
    goto retry;
  }
  else if (!strncasecmp(&input, "d", 1)) {
    if (selected)
      selected = curses_int("Select GPU to disable");
    if (selected < 0 || selected >= nDevs) {
      wlogprint("Invalid selection\n");
      goto retry;
    }
    if (gpus[selected].deven == DEV_DISABLED) {
      wlogprint("Device already disabled\n");
      goto retry;
    }
    gpus[selected].deven = DEV_DISABLED;
    goto retry;
  }
  else if (!strncasecmp(&input, "i", 1)) {
    int intensity;
    char *intvar;

    if (selected)
      selected = curses_int("Select GPU to change intensity on");
    if (selected < 0 || selected >= nDevs) {
      wlogprint("Invalid selection\n");
      goto retry;
    }

    intvar = curses_input("Set GPU scan intensity (d or "
      MIN_INTENSITY_STR " -> "
      MAX_INTENSITY_STR ")");
    if (!intvar) {
      wlogprint("Invalid input\n");
      goto retry;
    }
    if (!strncasecmp(intvar, "d", 1)) {
      wlogprint("Dynamic mode enabled on gpu %d\n", selected);
      gpus[selected].dynamic = true;

      // fix config with new settings so that we can save them
      update_config_intensity(get_gpu_profile(selected));

      pause_dynamic_threads(selected);
      free(intvar);
      goto retry;
    }
    intensity = atoi(intvar);
    free(intvar);
    if (intensity < MIN_INTENSITY || intensity > MAX_INTENSITY) {
      wlogprint("Invalid selection\n");
      goto retry;
    }
    gpus[selected].dynamic = false;
    gpus[selected].intensity = intensity;
    gpus[selected].xintensity = 0; // Disable xintensity when enabling intensity
    gpus[selected].rawintensity = 0; // Disable raw intensity when enabling intensity
    wlogprint("Intensity on gpu %d set to %d\n", selected, intensity);

    // fix config with new settings so that we can save them
    update_config_intensity(get_gpu_profile(selected));

    pause_dynamic_threads(selected);
    goto retry;
  }
  else if (!strncasecmp(&input, "x", 1)) {
    int xintensity;
    char *intvar;

    if (selected)
      selected = curses_int("Select GPU to change experimental intensity on");
    if (selected < 0 || selected >= nDevs) {
      wlogprint("Invalid selection\n");
      goto retry;
    }

    intvar = curses_input("Set experimental GPU scan intensity (" MIN_XINTENSITY_STR " -> " MAX_XINTENSITY_STR ")");
    if (!intvar) {
      wlogprint("Invalid input\n");
      goto retry;
    }
    xintensity = atoi(intvar);
    free(intvar);
    if (xintensity < MIN_XINTENSITY || xintensity > MAX_XINTENSITY) {
      wlogprint("Invalid selection\n");
      goto retry;
    }
    gpus[selected].dynamic = false;
    gpus[selected].intensity = 0; // Disable intensity when enabling xintensity
    gpus[selected].rawintensity = 0; // Disable raw intensity when enabling xintensity
    gpus[selected].xintensity = xintensity;
    wlogprint("Experimental intensity on gpu %d set to %d\n", selected, xintensity);

    // fix config with new settings so that we can save them
    update_config_xintensity(get_gpu_profile(selected));

    pause_dynamic_threads(selected);
    goto retry;
  }
  else if (!strncasecmp(&input, "a", 1)) {
    int rawintensity;
    char *intvar;

    if (selected)
      selected = curses_int("Select GPU to change raw intensity on");
    if (selected < 0 || selected >= nDevs) {
      wlogprint("Invalid selection\n");
      goto retry;
    }

    intvar = curses_input("Set raw GPU scan intensity (" MIN_RAWINTENSITY_STR " -> " MAX_RAWINTENSITY_STR ")");
    if (!intvar) {
      wlogprint("Invalid input\n");
      goto retry;
    }
    rawintensity = atoi(intvar);
    free(intvar);
    if (rawintensity < MIN_RAWINTENSITY || rawintensity > MAX_RAWINTENSITY) {
      wlogprint("Invalid selection\n");
      goto retry;
    }
    gpus[selected].dynamic = false;
    gpus[selected].intensity = 0; // Disable intensity when enabling raw intensity
    gpus[selected].xintensity = 0; // Disable xintensity when enabling raw intensity
    gpus[selected].rawintensity = rawintensity;
    wlogprint("Raw intensity on gpu %d set to %d\n", selected, rawintensity);

    // fix config with new settings so that we can save them
    update_config_rawintensity(get_gpu_profile(selected));

    pause_dynamic_threads(selected);
    goto retry;
  }
  else if (!strncasecmp(&input, "r", 1)) {
    if (selected)
      selected = curses_int("Select GPU to attempt to restart");
    if (selected < 0 || selected >= nDevs) {
      wlogprint("Invalid selection\n");
      goto retry;
    }
    wlogprint("Attempting to restart threads of GPU %d\n", selected);
    reinit_device(&gpus[selected]);
    goto retry;
  }
  else if (adl_active && (!strncasecmp(&input, "c", 1))) {
    if (selected)
      selected = curses_int("Select GPU to change settings on");
    if (selected < 0 || selected >= nDevs) {
      wlogprint("Invalid selection\n");
      goto retry;
    }
    change_gpusettings(selected);
    goto retry;
  }
  else
    clear_logwin();

  immedok(logwin, false);
  opt_loginput = false;
}
#else
void manage_gpu(void)
{
}
#endif

static _clState *clStates[MAX_GPUDEVICES];

static void set_threads_hashes(unsigned int vectors, unsigned int compute_shaders, int64_t *hashes, size_t *globalThreads,
  unsigned int minthreads, __maybe_unused int *intensity, __maybe_unused int *xintensity,
  __maybe_unused int *rawintensity, algorithm_t *algorithm)
{
  unsigned int threads = 0;
  while (threads < minthreads) {

    if (*rawintensity > 0) {
      threads = *rawintensity;
    }
    else if (*xintensity > 0) {
      threads = compute_shaders * ((algorithm->xintensity_shift) ? (1 << (algorithm->xintensity_shift + *xintensity)) : *xintensity);
    }
    else {
      threads = 1 << (algorithm->intensity_shift + *intensity);
    }

    if (threads < minthreads) {
      if (likely(*intensity < MAX_INTENSITY)) {
        (*intensity)++;
      }
      else {
        threads = minthreads;
      }
    }
  }

  *globalThreads = threads;
  *hashes = threads * vectors;
}

/* We have only one thread that ever re-initialises GPUs, thus if any GPU
 * init command fails due to a completely wedged GPU, the thread will never
 * return, unable to harm other GPUs. If it does return, it means we only had
 * a soft failure and then the reinit_gpu thread is ready to tackle another
 * GPU */
void *reinit_gpu(void *userdata)
{
  struct thr_info *mythr = (struct thr_info *)userdata;
  struct cgpu_info *cgpu;
  struct thr_info *thr;
  struct timeval now;
  char name[256];
  int thr_id;
  int gpu;

  pthread_detach(pthread_self());

select_cgpu:
  cgpu = (struct cgpu_info *)tq_pop(mythr->q, NULL);
  if (!cgpu)
    goto out;

  if (clDevicesNum() != nDevs) {
    applog(LOG_WARNING, "Hardware not reporting same number of active devices, will not attempt to restart GPU");
    goto out;
  }

  gpu = cgpu->device_id;

  rd_lock(&mining_thr_lock);
  for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
    thr = mining_thr[thr_id];
    cgpu = thr->cgpu;
    if (cgpu->drv->drv_id != DRIVER_opencl)
      continue;
    if (dev_from_id(thr_id) != gpu)
      continue;

    thr->rolling = thr->cgpu->rolling = 0;
    /* Reports the last time we tried to revive a sick GPU */
    cgtime(&thr->sick);
    if (!pthread_kill(thr->pth, 0)) {
      applog(LOG_WARNING, "Thread %d still exists, killing it off", thr_id);
      cg_completion_timeout(&thr_info_cancel_join, thr, 5000);
      thr->cgpu->drv->thread_shutdown(thr);
    }
    else
      applog(LOG_WARNING, "Thread %d no longer exists", thr_id);
  }
  rd_unlock(&mining_thr_lock);

  rd_lock(&mining_thr_lock);
  for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
    int virtual_gpu;

    thr = mining_thr[thr_id];
    cgpu = thr->cgpu;
    if (cgpu->drv->drv_id != DRIVER_opencl)
      continue;
    if (dev_from_id(thr_id) != gpu)
      continue;

    virtual_gpu = cgpu->virtual_gpu;
    /* Lose this ram cause we may get stuck here! */
    //tq_freeze(thr->q);

    thr->q = tq_new();
    if (!thr->q)
      quit(1, "Failed to tq_new in reinit_gpu");

    /* Lose this ram cause we may dereference in the dying thread! */
    //free(clState);

    applog(LOG_INFO, "Reinit GPU thread %d", thr_id);
    clStates[thr_id] = initCl(virtual_gpu, name, sizeof(name), &cgpu->algorithm);
    if (!clStates[thr_id]) {
      applog(LOG_ERR, "Failed to reinit GPU thread %d", thr_id);
      goto select_cgpu;
    }
    applog(LOG_INFO, "initCl() finished. Found %s", name);

    if (unlikely(thr_info_create(thr, NULL, miner_thread, thr))) {
      applog(LOG_ERR, "thread %d create failed", thr_id);
      return NULL;
    }
    applog(LOG_WARNING, "Thread %d restarted", thr_id);
  }
  rd_unlock(&mining_thr_lock);

  cgtime(&now);
  get_datestamp(cgpu->init, sizeof(cgpu->init), &now);

  rd_lock(&mining_thr_lock);
  for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
    thr = mining_thr[thr_id];
    cgpu = thr->cgpu;
    if (cgpu->drv->drv_id != DRIVER_opencl)
      continue;
    if (dev_from_id(thr_id) != gpu)
      continue;

    cgsem_post(&thr->sem);
  }
  rd_unlock(&mining_thr_lock);

  goto select_cgpu;
out:
  return NULL;
}

static void opencl_detect(void)
{
  int i;

  nDevs = clDevicesNum();
  if (nDevs < 0) {
    applog(LOG_ERR, "clDevicesNum returned error, no GPUs usable");
    nDevs = 0;
  }

  if (!nDevs)
    return;

  /* If opt_g_threads is not set, use default 1 thread */
  if (opt_g_threads == -1)
    opt_g_threads = 1;

  opencl_drv.max_diff = 65536;

  for (i = 0; i < nDevs; ++i) {
    struct cgpu_info *cgpu;

    cgpu = &gpus[i];
    cgpu->deven = DEV_ENABLED;
    cgpu->drv = &opencl_drv;
    cgpu->thr = NULL;
    cgpu->device_id = i;
#ifndef HAVE_ADL
    cgpu->threads = opt_g_threads;
#else
    if (cgpu->threads < 1)
      cgpu->threads = 1;
#endif
    cgpu->virtual_gpu = i;
    cgpu->algorithm = default_profile.algorithm;
    add_cgpu(cgpu);
  }
  
  if(!init_sysfs_hwcontrols(nDevs) && !opt_noadl) {
    init_adl(nDevs);
  }
}

static void reinit_opencl_device(struct cgpu_info *gpu)
{
  tq_push(control_thr[gpur_thr_id].q, gpu);
}

static void get_opencl_statline_before(char *buf, size_t bufsiz, struct cgpu_info *gpu)
{
  if (gpu->has_adl || gpu->has_sysfs_hwcontrols) {
    int gpuid = gpu->device_id;
    float gt = gpu_temp(gpuid);
    int gf = gpu_fanspeed(gpuid);
    int gp;

    if (gt != -1)
      tailsprintf(buf, bufsiz, "%5.1fC ", gt);
    else
      tailsprintf(buf, bufsiz, "       ");
    if (gf != -1)
      // show invalid as 9999
      tailsprintf(buf, bufsiz, "%4dRPM ", gf > 9999 ? 9999 : gf);
    else if ((gp = gpu_fanpercent(gpuid)) != -1)
      tailsprintf(buf, bufsiz, "%3d%%    ", gp);
    else
      tailsprintf(buf, bufsiz, "        ");
    tailsprintf(buf, bufsiz, "| ");
  }
  else
    gpu->drv->get_statline_before = &blank_get_statline_before;
}

static void get_opencl_statline(char *buf, size_t bufsiz, struct cgpu_info *gpu)
{
  if (gpu->rawintensity > 0)
    tailsprintf(buf, bufsiz, " rI:%3d", gpu->rawintensity);
  else if (gpu->xintensity > 0)
    tailsprintf(buf, bufsiz, " xI:%3d", gpu->xintensity);
  else
    tailsprintf(buf, bufsiz, " I:%2d", gpu->intensity);
}

struct opencl_thread_data {
  cl_int(*queue_kernel_parameters)(_clState *, dev_blk_ctx *, cl_uint);
  uint32_t *res;
};

static uint32_t *blank_res;

static bool opencl_thread_prepare(struct thr_info *thr)
{
  char name[256];
  struct timeval now;
  struct cgpu_info *cgpu = thr->cgpu;
  int gpu = cgpu->device_id;
  int virtual_gpu = cgpu->virtual_gpu;
  int i = thr->id;
  static bool failmessage = false;
  int buffersize = BUFFERSIZE;

  if (!blank_res)
    blank_res = (uint32_t *)calloc(buffersize, 1);
  if (!blank_res) {
    applog(LOG_ERR, "Failed to calloc in opencl_thread_init");
    return false;
  }

  strcpy(name, "");
  applog(LOG_INFO, "Init GPU thread %i GPU %i virtual GPU %i", i, gpu, virtual_gpu);

  clStates[i] = initCl(virtual_gpu, name, sizeof(name), &cgpu->algorithm);
  if (!clStates[i]) {
#ifdef HAVE_CURSES
    if (use_curses)
      enable_curses();
#endif
    applog(LOG_ERR, "Failed to init GPU thread %d, disabling device %d", i, gpu);
    if (!failmessage) {
      applog(LOG_ERR, "Restarting the GPU from the menu will not fix this.");
      applog(LOG_ERR, "Re-check your configuration and try restarting.");
      failmessage = true;
#ifdef HAVE_CURSES
      char *buf;
      if (use_curses) {
        buf = curses_input("Press enter to continue");
        if (buf)
          free(buf);
      }
#endif
    }
    cgpu->deven = DEV_DISABLED;
    cgpu->status = LIFE_NOSTART;

    dev_error(cgpu, REASON_DEV_NOSTART);

    return false;
  }
  if (!cgpu->name)
    cgpu->name = strdup(name);

  applog(LOG_INFO, "initCl() finished. Found %s", name);
  cgtime(&now);
  get_datestamp(cgpu->init, sizeof(cgpu->init), &now);

  return true;
}

static bool opencl_thread_init(struct thr_info *thr)
{
  const int thr_id = thr->id;
  struct cgpu_info *gpu = thr->cgpu;
  struct opencl_thread_data *thrdata;
  _clState *clState = clStates[thr_id];
  cl_int status = 0;
  thrdata = (struct opencl_thread_data *)calloc(1, sizeof(*thrdata));
  thr->cgpu_data = thrdata;

  if (!thrdata) {
    applog(LOG_ERR, "Failed to calloc in opencl_thread_init");
    return false;
  }

  thrdata->queue_kernel_parameters = gpu->algorithm.queue_kernel;
  thrdata->res = (uint32_t *)calloc(BUFFERSIZE, 1);

  if (!thrdata->res) {
    free(thrdata);
    applog(LOG_ERR, "Failed to calloc in opencl_thread_init");
    return false;
  }

  status |= clEnqueueWriteBuffer(clState->commandQueue, clState->outputBuffer, CL_TRUE, 0,
    BUFFERSIZE, blank_res, 0, NULL, NULL);
  if (unlikely(status != CL_SUCCESS)) {
    free(thrdata->res);
    free(thrdata);
    applog(LOG_ERR, "Error: clEnqueueWriteBuffer failed (opencl_thread_init) (status = %d).", status);
    return false;
  }

  gpu->status = LIFE_WELL;

  gpu->device_last_well = time(NULL);

  return true;
}

static bool opencl_prepare_work(struct thr_info __maybe_unused *thr, struct work *work)
{
  work->blk.work = work;
  if (work->pool->algorithm.precalc_hash)
    work->pool->algorithm.precalc_hash(&work->blk, 0, (uint32_t *)(work->data));
  thr->pool_no = work->pool->pool_no;

  return true;
}


extern int opt_dynamic_interval;

static int64_t opencl_scanhash(struct thr_info *thr, struct work *work,
  int64_t __maybe_unused max_nonce)
{
  const int thr_id = thr->id;
  struct opencl_thread_data *thrdata = (struct opencl_thread_data *)thr->cgpu_data;
  struct cgpu_info *gpu = thr->cgpu;
  _clState *clState = clStates[thr_id];
  const int dynamic_us = opt_dynamic_interval * 1000;

  cl_int status;
  size_t globalThreads[1];
  size_t localThreads[1] = { clState->wsize };
  size_t *p_global_work_offset = NULL;
  int64_t hashes;
  int found = gpu->algorithm.found_idx;
  int buffersize = BUFFERSIZE;
  unsigned int i;

  /* Windows' timer resolution is only 15ms so oversample 5x */
  if (gpu->dynamic && (++gpu->intervals * dynamic_us) > 70000) {
    struct timeval tv_gpuend;
    double gpu_us;

    cgtime(&tv_gpuend);
    gpu_us = us_tdiff(&tv_gpuend, &gpu->tv_gpustart) / gpu->intervals;
    if (gpu_us > dynamic_us) {
      if (gpu->intensity > MIN_INTENSITY)
        --gpu->intensity;
    }
    else if (gpu_us < dynamic_us / 2) {
      if (gpu->intensity < MAX_INTENSITY)
        ++gpu->intensity;
    }
    memcpy(&(gpu->tv_gpustart), &tv_gpuend, sizeof(struct timeval));
    gpu->intervals = 0;
  }

  set_threads_hashes(clState->vwidth, clState->compute_shaders, &hashes, globalThreads, localThreads[0],
    &gpu->intensity, &gpu->xintensity, &gpu->rawintensity, &gpu->algorithm);
  if (hashes > gpu->max_hashes)
    gpu->max_hashes = hashes;

  if (gpu->algorithm.type == ALGO_EQUIHASH) {
    int64_t ret = 0;
    size_t length = sizeof(sols_t);
    uint64_t t0 = time(NULL);
    uint8_t prev_hash[32];
    size_t txns;
    bool stale = true;
    
    if (work->getwork_mode != GETWORK_MODE_STRATUM) {
      cg_rlock(&work->pool->gbt_lock);
      txns = work->pool->gbt_txns;
      memcpy(prev_hash, work->pool->previousblockhash, 32);
      cg_runlock(&work->pool->gbt_lock);
    }
    
    thrdata->res = realloc(thrdata->res, length);
    sols_t *sols = (sols_t*) thrdata->res;
    work->thr = thr;
    do {
      status = thrdata->queue_kernel_parameters(clState, &work->blk, globalThreads[0]);
      status |= clEnqueueReadBuffer(clState->commandQueue, clState->outputBuffer, CL_TRUE, 0, length, thrdata->res, 0, NULL,  NULL);
      if (status == CL_SUCCESS) {
        if (sols->nr > MAX_SOLS) {
          applog(LOG_DEBUG, "equihash: %d (probably invalid) solutions were dropped!", sols->nr - MAX_SOLS);
          sols->nr = MAX_SOLS;
        }
        for (int sol_i = 0; sol_i < sols->nr; sol_i++)
          ret += equihash_verify_sol(work, sols, sol_i);
      }
      else {
        applog(LOG_ERR, "Error %d: Reading result buffer for ALGO_EQUIHASH failed. (clEnqueueReadBuffer)", status);
        return -1;
      }
      
      // increase nonce
      work->blk.nonce++;
      if (work->getwork_mode == GETWORK_MODE_STRATUM)
        *(uint16_t*)(work->equihash_data + 108 + strlen(work->nonce1) / 2) += 1;
      else {
        *(uint64_t*)(work->equihash_data + 108) += 1;
        
        cg_rlock(&work->pool->gbt_lock);
        stale = (work->pool->gbt_txns != txns) || (memcmp(prev_hash, work->pool->previousblockhash, 32) != 0);
        cg_runlock(&work->pool->gbt_lock);
      }
    } while (!stale && (time(NULL) - t0) < 2); 
    return ret;
  }
  
  status = thrdata->queue_kernel_parameters(clState, &work->blk, globalThreads[0]);
  if (unlikely(status != CL_SUCCESS)) {
    if (status > 0)
      return 0;
    applog(LOG_ERR, "Error: clSetKernelArg of all params failed.");
    return -1;
  }
  // if (algorithm.type == ALGO_ETHASH) read lock gpu->eth_dag.lock has to be released
  
  if(gpu->algorithm.type == ALGO_CRYPTONIGHT) {
    mutex_lock(&work->pool->XMRGlobalNonceLock);
    work->blk.nonce = work->pool->XMRGlobalNonce;
    work->pool->XMRGlobalNonce += gpu->max_hashes;
    mutex_unlock(&work->pool->XMRGlobalNonceLock);
  }
  
  size_t global_work_offset = work->blk.nonce;
  if (clState->goffset)
    p_global_work_offset = &global_work_offset;
  
  if (gpu->algorithm.type == ALGO_CRYPTONIGHT) {
    size_t GlobalThreads = *globalThreads, Nonce[2] = { (size_t)work->blk.nonce, 1}, gthreads[2] = { *globalThreads, 8 }, lthreads[2] = { *localThreads, 8 };
    size_t BranchBufCount[4] = { 0, 0, 0, 0 };
    
    for (int i = 0; i < 4; ++i) {
      cl_uint zero = 0;

      status = clEnqueueWriteBuffer(clState->commandQueue, clState->BranchBuffer[i], CL_FALSE, sizeof(cl_uint) * GlobalThreads, sizeof(cl_uint), &zero, 0, NULL, NULL);

      if(status != CL_SUCCESS) {
        applog(LOG_ERR, "Error %d while resetting branch buffer counter %d.\n", status, i);
        return -1;
      }
    }
    
    clFinish(clState->commandQueue);
    
    // Main CN P0
    status = clEnqueueNDRangeKernel(clState->commandQueue, clState->kernel, 2, Nonce, gthreads, lthreads, 0, NULL, NULL);
    
    if (status != CL_SUCCESS) {
      applog(LOG_ERR, "Error %d while attempting to enqueue kernel 0.", status);
      return -1;
    }
    
    // Main CN P1
    status = clEnqueueNDRangeKernel(clState->commandQueue, clState->extra_kernels[0], 1, p_global_work_offset, globalThreads, localThreads, 0, NULL, NULL);
    
    if (status != CL_SUCCESS) {
      applog(LOG_ERR, "Error %d while attempting to enqueue kernel 1.", status);
      return -1;
    }
    
    // Main CN P2
    status = clEnqueueNDRangeKernel(clState->commandQueue, clState->extra_kernels[1], 2, Nonce, gthreads, lthreads, 0, NULL, NULL);
    
    if (status != CL_SUCCESS) {
      applog(LOG_ERR, "Error %d while attempting to enqueue kernel 2.", status);
      return -1;
    }
    
    // Read BranchBuf counters
    
    for (int i = 0; i < 4; ++i) {
      status = clEnqueueReadBuffer(clState->commandQueue, clState->BranchBuffer[i], CL_FALSE, sizeof(cl_uint) * GlobalThreads, sizeof(cl_uint), BranchBufCount + i, 0, NULL, NULL);
      
      if(status != CL_SUCCESS) {
        applog(LOG_ERR, "Error %d while attempting to read branch buffer counter %d.", status, i);
        return(-1);
      }
    }
    
    clFinish(clState->commandQueue);
    
    for (int i = 0; i < 4; ++i) {
      if(BranchBufCount[i]) {
        cl_ulong tmp = BranchBufCount[i];
        
        // Threads
        status = clSetKernelArg(clState->extra_kernels[i + 2], 4, sizeof(cl_ulong), &tmp);
        
        if (status != CL_SUCCESS) {
          applog(LOG_ERR, "Error %d while attempting to set argument 4 for kernel %d.", status, i + 2);
          return -1;
        }
        
        // Make it a multiple of the local worksize (some drivers will otherwise shit a brick)
        BranchBufCount[i] += (clState->wsize - (BranchBufCount[i] & (clState->wsize - 1)));
        
        status = clEnqueueNDRangeKernel(clState->commandQueue, clState->extra_kernels[i + 2], 1, p_global_work_offset, BranchBufCount + i, localThreads, 0, NULL, NULL);
        
        if (status != CL_SUCCESS) {
          applog(LOG_ERR, "Error %d while attempting to enqueue kernel %d.", status, i + 2);
          return -1;
        }
      }
    }
  }
  else {
    status = clEnqueueNDRangeKernel(clState->commandQueue, clState->kernel, 1, p_global_work_offset,
      globalThreads, localThreads, 0, NULL, NULL);

    if (unlikely(status != CL_SUCCESS)) {
      if (work->pool->algorithm.type == ALGO_ETHASH)
        cg_runlock(&gpu->eth_dag.lock);
      applog(LOG_ERR, "Error %d: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)", status);
      return -1;
    }

    for (i = 0; i < clState->n_extra_kernels; i++) {
      status = clEnqueueNDRangeKernel(clState->commandQueue, clState->extra_kernels[i], 1, p_global_work_offset,
      globalThreads, localThreads, 0, NULL, NULL);
      if (unlikely(status != CL_SUCCESS)) {
        applog(LOG_ERR, "Error %d: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)", status);
        return -1;
      }
    }
  }
  
  status = clEnqueueReadBuffer(clState->commandQueue, clState->outputBuffer, CL_FALSE, 0,
    buffersize, thrdata->res, 0, NULL, NULL);
  if (unlikely(status != CL_SUCCESS)) {
    if (work->pool->algorithm.type == ALGO_ETHASH)
      cg_runlock(&gpu->eth_dag.lock);
    applog(LOG_ERR, "Error: clEnqueueReadBuffer failed error %d. (clEnqueueReadBuffer)", status);
    return -1;
  }

  /* The amount of work scanned can fluctuate when intensity changes
   * and since we do this one cycle behind, we increment the work more
   * than enough to prevent repeating work */
  work->blk.nonce += gpu->max_hashes;

  /* This finish flushes the readbuffer set with CL_FALSE in clEnqueueReadBuffer */
  clFinish(clState->commandQueue);
  if (work->pool->algorithm.type == ALGO_ETHASH)
    cg_runlock(&gpu->eth_dag.lock);

  /* found entry is used as a counter to say how many nonces exist */
  if (thrdata->res[found]) {
    /* Clear the buffer again */
    status = clEnqueueWriteBuffer(clState->commandQueue, clState->outputBuffer, CL_FALSE, 0,
      buffersize, blank_res, 0, NULL, NULL);
    if (unlikely(status != CL_SUCCESS)) {
      applog(LOG_ERR, "Error: clEnqueueWriteBuffer failed (opencl_scanhash).");
      return -1;
    }
    applog(LOG_DEBUG, "GPU %d found something?", gpu->device_id);
    postcalc_hash_async(thr, work, thrdata->res);
//  postcalc_hash(thr);
//  submit_tested_work(thr, work);
//  submit_work_async(work);
    memset(thrdata->res, 0, buffersize);
    /* This finish flushes the writebuffer set with CL_FALSE in clEnqueueWriteBuffer */
//  clFinish(clState->commandQueue);
  }

  return hashes;
}

// Cleanup OpenCL memory on the GPU
// Note: This function is not thread-safe (clStates modification not atomic)
static void opencl_thread_shutdown(struct thr_info *thr)
{
  const int thr_id = thr->id;
  _clState *clState = clStates[thr_id];
  clStates[thr_id] = NULL;
  unsigned int i;

  if (clState) {
    clFinish(clState->commandQueue);
    clReleaseMemObject(clState->outputBuffer);
    clReleaseMemObject(clState->CLbuffer0);
    if (clState->buffer1)
      clReleaseMemObject(clState->buffer1);
    if (clState->buffer2)
      clReleaseMemObject(clState->buffer2);
    if (clState->buffer3)
      clReleaseMemObject(clState->buffer3);
    if (clState->padbuffer8)
      clReleaseMemObject(clState->padbuffer8);
    for (i = 0; i < 9; i++)
      if (clState->index_buf[i])
        clReleaseMemObject(clState->index_buf[i]);
    for (i = 0; i < 4; i++)
      if (clState->BranchBuffer[i])
        clReleaseMemObject(clState->BranchBuffer[i]);
    if (clState->Scratchpads)
      clReleaseMemObject(clState->Scratchpads);
    if (clState->States)
      clReleaseMemObject(clState->States);
    clReleaseKernel(clState->kernel);
    for (i = 0; i < clState->n_extra_kernels; i++)
      clReleaseKernel(clState->extra_kernels[i]);
    clReleaseProgram(clState->program);
    clReleaseCommandQueue(clState->commandQueue);
    clReleaseContext(clState->context);
    if (clState->extra_kernels)
      free(clState->extra_kernels);
    free(clState);
  }
  // Causes invalid free crashes in some cases.
  //free(((struct opencl_thread_data *)thr->cgpu_data)->res);
  //free(thr->cgpu_data);
  thr->cgpu_data = NULL;
}

struct device_drv opencl_drv = {
  /*.drv_id = */      DRIVER_opencl,
  /*.dname = */     "opencl",
  /*.name = */      "GPU",
  /*.drv_detect = */    opencl_detect,
  /*.reinit_device = */   reinit_opencl_device,
#if (defined HAVE_ADL) || (defined __linux__)
  /*.get_statline_before = */ get_opencl_statline_before,
#else
  NULL,
#endif
  /*.get_statline = */    get_opencl_statline,
  /*.api_data = */    NULL,
  /*.get_stats = */   NULL,
  /*.identify_device = */   NULL,
  /*.set_device = */    NULL,

  /*.thread_prepare = */    opencl_thread_prepare,
  /*.can_limit_work = */    NULL,
  /*.thread_init = */   opencl_thread_init,
  /*.prepare_work = */    opencl_prepare_work,
  /*.hash_work = */   NULL,
  /*.scanhash = */    opencl_scanhash,
  /*.scanwork = */    NULL,
  /*.queue_full = */    NULL,
  /*.flush_work = */    NULL,
  /*.update_work = */   NULL,
  /*.hw_error = */    NULL,
  /*.thread_shutdown = */   opencl_thread_shutdown,
  /*.thread_enable =*/    NULL,
  false,
  0,
  0
};