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sysfs-gpu-controls.c
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sysfs-gpu-controls.c
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#include <stdint.h>
#include <stdbool.h>
#include <dirent.h>
#include "miner.h"
#include "pptable_v1_0.h"
#include "sysfs-gpu-controls.h"
bool initialized = false;
bool has_sysfs_hwcontrols = false;
bool opt_reorder = false;
int opt_hysteresis = 3;
int opt_targettemp = 80;
int opt_overheattemp = 85;
float sysfs_gpu_vddc(int gpu) { return -1; }
int sysfs_gpu_activity(int gpu) { return -1; }
int sysfs_set_vddc(int gpu, float fVddc) { return 1; }
#ifndef __linux__
static void sysfs_init(gpu_sysfs_info *info, int gpu_idx)
{
memset(info, 0, sizeof(gpu_sysfs_info));
info->fd_pptable = info->fd_fan = info->fd_temp = info->fd_pwm = info->fd_sclk = info->fd_mclk = -1;
}
#else
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
static void sysfs_init(gpu_sysfs_info *info, int gpu_idx)
{
char path[256];
struct dirent *inner_hwmon;
info->fd_pptable = info->fd_fan = info->fd_temp = info->fd_pwm = info->fd_sclk = info->fd_mclk = -1;
snprintf(path, sizeof(path), "/sys/bus/pci/devices/0000:%.2x:%.2x.%.1x/",
info->pcie_index[0], info->pcie_index[1], info->pcie_index[2]);
size_t len = strlen(path);
snprintf(path + len, sizeof(path) - len, "hwmon");
DIR *hwmon = opendir(path);
if (hwmon == NULL) {
applog(LOG_DEBUG, "Failed to open hwmon directory %s for GPU%d", path, gpu_idx);
snprintf(path, sizeof(path), "/sys/class/drm/card%d/device/hwmon", gpu_idx);
len = strlen(path) - 5;
hwmon = opendir(path);
if (hwmon == NULL) {
applog(LOG_DEBUG, "Failed to open hwmon directory %s for GPU%d", path, gpu_idx);
return;
}
}
snprintf(path + len, sizeof(path) - len, "pp_table");
int fd = open(path, O_RDONLY | O_RSYNC);
bool success = false;
if (fd != -1) {
int size = lseek(fd, 0, SEEK_END);
if (size > 0) {
lseek(fd, 0, SEEK_SET);
info->pptable = (uint8_t*) malloc(size);
info->default_pptable = (uint8_t*) malloc(size);
info->pptable_size = read(fd, info->pptable, size);
memcpy(info->default_pptable, info->pptable, info->pptable_size);
info->fd_pptable = open(path, O_WRONLY | O_DSYNC);
success = (info->fd_pptable != -1 && info->pptable_size > 0);
}
close(fd);
}
if (!success) {
if (info->fd_pptable != -1) {
close(info->fd_pptable);
info->fd_pptable = -1;
}
applog(LOG_DEBUG, "Failed to open/read %s", path);
}
else
pthread_mutex_init(&info->rw_lock, NULL);
snprintf(path + len, sizeof(path) - len, "pp_dpm_sclk");
info->fd_sclk = open(path, O_RDONLY | O_RSYNC);
if (info->fd_sclk == -1)
applog(LOG_DEBUG, "Failed to open %s", path);
snprintf(path + len, sizeof(path) - len, "pp_dpm_mclk");
info->fd_mclk = open(path, O_RDONLY | O_RSYNC);
if (info->fd_mclk == -1)
applog(LOG_DEBUG, "Failed to open %s", path);
while (true) {
inner_hwmon = readdir(hwmon);
if (inner_hwmon == NULL) {
closedir(hwmon);
applog(LOG_DEBUG, "Failed to parse hwmon directory for GPU%d", gpu_idx);
return;
}
if (inner_hwmon->d_type != DT_DIR)
continue;
if (!memcmp(inner_hwmon->d_name, "hwmon", 5))
break;
}
snprintf(path + len, sizeof(path) - len, "hwmon/%s/", inner_hwmon->d_name);
len = strlen(path);
closedir(hwmon);
snprintf(path + len, sizeof(path) - len, "pwm1");
info->fd_fan = open(path, O_RDWR | O_RSYNC | O_DSYNC);
if (info->fd_fan == -1)
applog(LOG_DEBUG, "Failed to open %s", path);
else
pthread_mutex_init(&info->rw_lock, NULL);
char buf[17] = {0};
snprintf(path + len, sizeof(path) - len, "pwm1_min");
fd = open(path, O_RDONLY | O_RSYNC);
info->min_fanspeed = 0;
if (fd != -1) {
int bytes_read = read(fd, &buf, sizeof(buf) - 1);
if (bytes_read > 0)
info->min_fanspeed = strtoul(buf, NULL, 10);
else
applog(LOG_DEBUG, "Failed to read %s", path);
close(fd);
}
else
applog(LOG_DEBUG, "Failed to open %s", path);
snprintf(path + len, sizeof(path) - len, "pwm1_max");
fd = open(path, O_RDONLY | O_RSYNC);
info->max_fanspeed = 255;
if (fd != -1) {
int bytes_read = read(fd, &buf, sizeof(buf) - 1);
if (bytes_read > 0) {
buf[bytes_read] = '\0';
info->max_fanspeed = strtoul(buf, NULL, 10);
}
else
applog(LOG_DEBUG, "Failed to read %s", path);
close(fd);
}
else
applog(LOG_DEBUG, "Failed to open %s", path);
snprintf(path + len, sizeof(path) - len, "temp1_input");
info->fd_temp = open(path, O_RDONLY | O_RSYNC);
if (info->fd_temp == -1)
applog(LOG_DEBUG, "Failed to open %s", path);
snprintf(path + len, sizeof(path) - len, "fan1_input");
info->fd_pwm = open(path, O_RDONLY | O_RSYNC);
if (info->fd_pwm == -1)
applog(LOG_DEBUG, "Failed to open %s", path);
}
#endif
static int parse_dpm_clk_table(int fd)
{
char buf[1024];
int ret = -1;
#ifdef __linux__
if (has_sysfs_hwcontrols && fd != -1) {
lseek(fd, 0, SEEK_SET);
size_t len = read(fd, buf, sizeof(buf) - 1);
if (len > 0) {
buf[len] = '\0';
char *ptr = strtok(buf, "\n");
while (ptr != NULL) {
int index;
int freq;
char active_str[3] = {0};
sscanf(ptr, "%d: %dMhz%s", &index, &freq, active_str);
if (active_str[0] == '*' || active_str[1] == '*') {
ret = freq;
break;
}
ptr = strtok(NULL, "\n");
}
}
}
#endif
return ret;
}
int sysfs_gpu_engineclock(int gpu)
{
return parse_dpm_clk_table(gpus[gpu].sysfs_info.fd_sclk);
}
int sysfs_gpu_memclock(int gpu)
{
return parse_dpm_clk_table(gpus[gpu].sysfs_info.fd_mclk);
}
float sysfs_gpu_temp(int gpu)
{
gpu_sysfs_info *info = &gpus[gpu].sysfs_info;
char temp_str[17];
float ret = -1.f;
#ifdef __linux__
if (has_sysfs_hwcontrols && info->fd_temp != -1) {
lseek(info->fd_temp, 0, SEEK_SET);
int bytes_read = read(info->fd_temp, &temp_str, sizeof(temp_str) - 1);
if (bytes_read > 0) {
temp_str[bytes_read] = '\0';
ret = strtol(temp_str, NULL, 10) / 1000.f;
}
}
#endif
return ret;
}
static int fanpercent_to_speed(gpu_sysfs_info *info, float fanpercent)
{
int min = info->min_fanspeed;
int max = info->max_fanspeed;
float range = max - min;
float speed = fanpercent / 100.f * range + min + 0.5f;
return speed;
}
static float fanspeed_to_percent(gpu_sysfs_info *info, int speed)
{
int min = info->min_fanspeed;
int max = info->max_fanspeed;
float range = max - min;
float fanpercent = (speed - min) / range * 100.f;
return fanpercent;
}
int sysfs_gpu_fanspeed(int gpu)
{
gpu_sysfs_info *info = &gpus[gpu].sysfs_info;
char speed_str[17];
int ret = -1;
#ifdef __linux__
if (has_sysfs_hwcontrols && info->fd_pwm != -1) {
lseek(info->fd_pwm, 0, SEEK_SET);
int bytes_read = read(info->fd_pwm, speed_str, sizeof(speed_str) - 1);
if (bytes_read > 0) {
speed_str[bytes_read] = '\0';
ret = strtoul(speed_str, NULL, 10);
}
}
#endif
return ret;
}
float sysfs_gpu_fanpercent(int gpu)
{
gpu_sysfs_info *info = &gpus[gpu].sysfs_info;
char speed_str[17];
float ret = -1.f;
#ifdef __linux__
if (has_sysfs_hwcontrols && info->fd_fan != -1) {
pthread_mutex_lock(&info->rw_lock);
lseek(info->fd_fan, 0, SEEK_SET);
int bytes_read = read(info->fd_fan, speed_str, sizeof(speed_str) - 1);
pthread_mutex_unlock(&info->rw_lock);
if (bytes_read > 0) {
speed_str[bytes_read] = '\0';
unsigned long speed = strtoul(speed_str, NULL, 10);
ret = fanspeed_to_percent(info, speed);
}
}
#endif
return ret;
}
static int __set_fanspeed(gpu_sysfs_info *info, float fanpercent)
{
char speed_str[17];
int speed = fanpercent_to_speed(info, fanpercent);
int ret = 1;
snprintf(speed_str, sizeof(speed_str), "%d", speed);
#ifdef __linux__
if (info->fd_fan != -1 && fanpercent >= 0.f) {
lseek(info->fd_fan, 0, SEEK_SET);
ret = (write(info->fd_fan, speed_str, strlen(speed_str)) <= 0);
if (!ret)
info->target_fanpercent = fanpercent;
}
#endif
return ret;
}
int sysfs_set_fanspeed(int gpu, float fanpercent)
{
int ret = 1;
if (has_sysfs_hwcontrols && gpus[gpu].has_sysfs_hwcontrols) {
gpu_sysfs_info *info = &gpus[gpu].sysfs_info;
applog(LOG_DEBUG, "GPU%d: set fanpercent to %.3g%%", gpu, fanpercent);
pthread_mutex_lock(&info->rw_lock);
ret = __set_fanspeed(info, fanpercent);
pthread_mutex_unlock(&info->rw_lock);
}
return ret;
}
static Tonga_State_Array *get_state_array(uint8_t *pptable)
{
Tonga_POWERPLAYTABLE *header = (Tonga_POWERPLAYTABLE*) pptable;
return (Tonga_State_Array*) (pptable + header->usStateArrayOffset);
}
static Tonga_MCLK_Dependency_Table *get_mclk_table(uint8_t *pptable)
{
Tonga_POWERPLAYTABLE *header = (Tonga_POWERPLAYTABLE*) pptable;
return (Tonga_MCLK_Dependency_Table*) (pptable + header->usMclkDependencyTableOffset);
}
static Tonga_SCLK_Dependency_Table *get_sclk_table(uint8_t *pptable)
{
Tonga_POWERPLAYTABLE *header = (Tonga_POWERPLAYTABLE*) pptable;
return (Tonga_SCLK_Dependency_Table*) (pptable + header->usSclkDependencyTableOffset);
}
static Tonga_SCLK_Dependency_Record *get_sclk_record(Tonga_SCLK_Dependency_Table *sclk_tbl, int idx)
{
Tonga_SCLK_Dependency_Record *record = NULL;
if (/*idx < sclk_tbl->ucNumEntries &&*/ sclk_tbl->ucRevId <= 1) {
int entry_size = (sclk_tbl->ucRevId == 0 ? sizeof(Tonga_SCLK_Dependency_Record) : sizeof(Polaris_SCLK_Dependency_Record));
record = (Tonga_SCLK_Dependency_Record*) ((uint8_t*) sclk_tbl->entries + idx * entry_size);
}
return record;
}
static int __apply_pptable(gpu_sysfs_info *info)
{
#ifdef __linux__
lseek(info->fd_pptable, 0, SEEK_SET);
int bytes_written = write(info->fd_pptable, info->pptable, info->pptable_size);
if (opt_autofan && info->target_fanpercent >= 0)
__set_fanspeed(info, info->target_fanpercent); // restore fan settings
return (bytes_written != info->pptable_size);
#else
return 0;
#endif
}
int sysfs_set_powertune(int gpu, int power_limit)
{
gpu_sysfs_info *info = &gpus[gpu].sysfs_info;
int ret = 1;
if (has_sysfs_hwcontrols && power_limit > 0 && info->fd_pptable != -1) {
applog(LOG_DEBUG, "GPU%d: set power limit to %dW", gpu, power_limit);
pthread_mutex_lock(&info->rw_lock);
Tonga_POWERPLAYTABLE *header = (Tonga_POWERPLAYTABLE*) info->pptable;
Tonga_PowerTune_Table *power_tbl = (Tonga_PowerTune_Table*) (info->pptable + header->usPowerTuneTableOffset);
Tonga_PowerTune_Table *default_power_tbl = (Tonga_PowerTune_Table*) (info->default_pptable + header->usPowerTuneTableOffset);
power_tbl->usTDC = (float) default_power_tbl->usTDC * power_limit / default_power_tbl->usMaximumPowerDeliveryLimit;
power_tbl->usMaximumPowerDeliveryLimit = power_limit;
ret = __apply_pptable(info);
pthread_mutex_unlock(&info->rw_lock);
}
return ret;
}
static int gpu_powertune(int gpu)
{
int ret = 0;
gpu_sysfs_info *info = &gpus[gpu].sysfs_info;
if (has_sysfs_hwcontrols && info->fd_pptable != -1) {
Tonga_POWERPLAYTABLE *header = (Tonga_POWERPLAYTABLE*) info->pptable;
Tonga_PowerTune_Table *power_tbl = (Tonga_PowerTune_Table*) (info->pptable + header->usPowerTuneTableOffset);
ret = power_tbl->usMaximumPowerDeliveryLimit;
}
return ret;
}
static bool __set_engineclock(struct cgpu_info *cgpu, int iEngineClock)
{
gpu_sysfs_info *info = &cgpu->sysfs_info;
int engineclock = info->engineclock;
if (iEngineClock <= 0)
return false;
if (cgpu->min_engine > 0)
iEngineClock = MAX(iEngineClock, cgpu->min_engine);
if (cgpu->gpu_engine > 0)
iEngineClock = MIN(iEngineClock, cgpu->gpu_engine);
applog(LOG_DEBUG, "GPU%d: set engineclock to %dMHz", cgpu->device_id, iEngineClock);
iEngineClock *= 100;
Tonga_SCLK_Dependency_Table *sclk_tbl = get_sclk_table(info->pptable);
//replace current sclk table with default table
size_t sclk_tbl_size = (uintptr_t) get_sclk_record(sclk_tbl, sclk_tbl->ucNumEntries) - (uintptr_t) sclk_tbl;
memcpy(sclk_tbl, get_sclk_table(info->default_pptable), sclk_tbl_size);
//parse pp_table
Tonga_SCLK_Dependency_Record *prev_record = NULL, *record;
int idx = sclk_tbl->ucNumEntries - 1;
for (; idx >= 0; idx--) {
record = get_sclk_record(sclk_tbl, idx);
if (iEngineClock > record->ulSclk)
break;
prev_record = record;
}
if (prev_record != NULL)
record = prev_record;
//set new values
if (idx >= 0) {
record->ulSclk = iEngineClock;
info->engineclock = iEngineClock / 100;
}
else
info->engineclock = record->ulSclk / 100;
idx = MIN(idx + 1, sclk_tbl->ucNumEntries - 1);
get_state_array(info->pptable)->entries[1].ucEngineClockIndexHigh = idx;
info->sclk_ind = idx;
return (engineclock != info->engineclock);
}
int sysfs_set_engineclock(int gpu, int iEngineClock)
{
struct cgpu_info *cgpu = &gpus[gpu];
gpu_sysfs_info *info = &cgpu->sysfs_info;
int ret = !has_sysfs_hwcontrols || info->fd_pptable == -1;
if (!ret) {
pthread_mutex_lock(&info->rw_lock);
bool updated = __set_engineclock(cgpu, iEngineClock);
if (updated)
ret = __apply_pptable(info);
pthread_mutex_unlock(&info->rw_lock);
}
return ret;
}
static bool __change_engineclock(struct cgpu_info *cgpu, bool increase)
{
gpu_sysfs_info *info = &cgpu->sysfs_info;
Tonga_SCLK_Dependency_Table *sclk_tbl = get_sclk_table(info->default_pptable);
Tonga_SCLK_Dependency_Record *record = get_sclk_record(sclk_tbl, info->sclk_ind);
bool updated = false;
if (increase) {
//check whether the power state can be increased
if (info->sclk_ind + 1 < sclk_tbl->ucNumEntries) {
record = get_sclk_record(sclk_tbl, ++info->sclk_ind);
updated = __set_engineclock(cgpu, record->ulSclk / 100);
}
else if (cgpu->gpu_engine > 0)
updated = __set_engineclock(cgpu, cgpu->gpu_engine);
}
else {
//check whether the power state can be decreased
if (info->sclk_ind - 1 >= 0) {
record = get_sclk_record(sclk_tbl, --info->sclk_ind);
updated = __set_engineclock(cgpu, record->ulSclk / 100);
}
else if (cgpu->min_engine > 0)
updated = __set_engineclock(cgpu, cgpu->min_engine);
}
return updated;
}
static bool __set_memoryclock(struct cgpu_info *cgpu, int iMemoryClock)
{
if (iMemoryClock <= 0)
return false;
gpu_sysfs_info *info = &cgpu->sysfs_info;
applog(LOG_DEBUG, "GPU%d: set memoryclock %dMHz", cgpu->device_id, iMemoryClock);
int memclock = info->memclock;
Tonga_MCLK_Dependency_Table* mclk_tbl = get_mclk_table(info->pptable);
Tonga_MCLK_Dependency_Record *record = &mclk_tbl->entries[1];
record->ulMclk = iMemoryClock * 100;
info->memclock = iMemoryClock;
return (memclock != info->memclock);
}
int sysfs_set_memoryclock(int gpu, int iMemoryClock)
{
struct cgpu_info *cgpu = &gpus[gpu];
gpu_sysfs_info *info = &cgpu->sysfs_info;
int ret = !has_sysfs_hwcontrols || info->fd_pptable == -1;
if (!ret) {
pthread_mutex_lock(&info->rw_lock);
bool updated = __set_memoryclock(cgpu, iMemoryClock);
if (updated)
ret = __apply_pptable(info);
pthread_mutex_unlock(&info->rw_lock);
}
return ret;
}
/* Returns whether the fanspeed is optimal already or not. The fan_window bool
* tells us whether the current fanspeed is in the target range for fanspeeds.
*/
static bool sysfs_fan_autotune(int gpu, int temp, float fanpercent, int lasttemp, bool *fan_window)
{
struct cgpu_info *cgpu = &gpus[gpu];
gpu_sysfs_info *info = &gpus[gpu].sysfs_info;
int tdiff = temp - lasttemp;
int top = gpus[gpu].gpu_fan;
int bot = gpus[gpu].min_fan;
float newpercent = info->target_fanpercent;//fanpercent;
float iMin = 0, iMax = 100;
if (!opt_autoengine && temp > info->overheat_temp && fanpercent < iMax) {
applog(LOG_WARNING, "Overheat detected on GPU %d, increasing fan to 100%% (temp was %d, overtemp is %d)\n", gpu, temp, info->overheat_temp);
newpercent = iMax;
dev_error(cgpu, REASON_DEV_OVER_HEAT);
}
else if (temp > info->target_temp && fanpercent < top && tdiff >= 0) {
applog(LOG_DEBUG, "Temperature over target, increasing fanspeed");
if (temp > info->target_temp + opt_hysteresis)
newpercent = info->target_fanpercent + 10;
else
newpercent = info->target_fanpercent + 5;
if (newpercent > top)
newpercent = top;
}
else if (fanpercent > bot && temp < info->target_temp - opt_hysteresis) {
/* Detect large swings of 5 degrees or more and change fan by
* a proportion more */
if (tdiff <= 0) {
applog(LOG_DEBUG, "Temperature %d degrees below target, decreasing fanspeed", opt_hysteresis);
newpercent = info->target_fanpercent - 1 + tdiff / 5;
}
else if (tdiff >= 5) {
applog(LOG_DEBUG, "Temperature climbed %d while below target, increasing fanspeed", tdiff);
newpercent = info->target_fanpercent + tdiff / 5;
}
}
else {
/* We're in the optimal range, make minor adjustments if the
* temp is still drifting */
if (fanpercent > bot && tdiff < 0 && lasttemp < info->target_temp) {
applog(LOG_DEBUG, "Temperature dropping while in target range, decreasing fanspeed");
newpercent = info->target_fanpercent + tdiff;
}
else if (fanpercent < top && tdiff > 0 && temp > info->target_temp - opt_hysteresis) {
applog(LOG_DEBUG, "Temperature rising while in target range, increasing fanspeed");
newpercent = info->target_fanpercent + tdiff;
}
}
if (newpercent > iMax)
newpercent = iMax;
else if (newpercent < iMin)
newpercent = iMin;
if (newpercent < top)
*fan_window = true;
else
*fan_window = false;
if (newpercent != fanpercent) {
applog(LOG_INFO, "Setting GPU %d fan percentage to %g", gpu, newpercent);
set_fanspeed(gpu, newpercent);
/* If the fanspeed is going down and we're below the top speed,
* consider the fan optimal to prevent minute changes in
* fanspeed delaying GPU engine speed changes */
if (newpercent < fanpercent && *fan_window)
return true;
return false;
}
return true;
}
void sysfs_gpu_autotune(int gpu, enum dev_enable *denable)
{
struct cgpu_info *cgpu = &gpus[gpu];
if (!has_sysfs_hwcontrols || !cgpu->has_sysfs_hwcontrols)
return;
gpu_sysfs_info *info = &cgpu->sysfs_info;
bool fan_window = true;
int temp = sysfs_gpu_temp(gpu);
int fanpercent = sysfs_gpu_fanpercent(gpu) + 0.5f;
if (temp && fanpercent >= 0 && opt_autofan)
sysfs_fan_autotune(gpu, temp, info->target_fanpercent, info->last_temp, &fan_window);
info->last_temp = temp;
uint32_t ctr_diff = info->ctr++ - info->last_ctr;
if (opt_autoengine && info->fd_pptable != 1) {
bool updated = false;
pthread_mutex_lock(&info->rw_lock);
if (temp > cgpu->cutofftemp && *denable == DEV_ENABLED) {
applog(LOG_WARNING, "Hit thermal cutoff limit on GPU %d, disabling!", gpu);
updated = __set_engineclock(cgpu, cgpu->min_engine);
*denable = DEV_RECOVER;
dev_error(cgpu, REASON_DEV_THERMAL_CUTOFF);
}
else if (temp > info->overheat_temp && *denable == DEV_ENABLED) {
applog(LOG_WARNING, "Overheat detected, decreasing GPU %d clock speed", gpu);
updated = __change_engineclock(cgpu, false);
dev_error(cgpu, REASON_DEV_OVER_HEAT);
/* Only try to tune engine speed up if this GPU is not disabled */
}
else if (temp < info->overheat_temp - opt_hysteresis && fan_window && ctr_diff >= 6 && *denable == DEV_ENABLED) {
applog(LOG_DEBUG, "Temperature below overheat, increasing clock speed");
updated = __change_engineclock(cgpu, true);
info->last_ctr = info->ctr;
}
else if (temp < info->target_temp && *denable == DEV_RECOVER && opt_restart) {
applog(LOG_NOTICE, "Device recovered to temperature below target, re-enabling");
*denable = DEV_ENABLED;
for (int i = 0; i < cgpu->threads; i++)
cgsem_post(&cgpu->thr[i]->sem);
}
if (updated)
__apply_pptable(info);
pthread_mutex_unlock(&info->rw_lock);
}
}
bool sysfs_gpu_stats(int gpu, float *temp, int *engineclock, int *memclock, float *vddc,
int *activity, int *fanspeed, int *fanpercent, int *powertune)
{
if (!has_sysfs_hwcontrols || !gpus[gpu].has_sysfs_hwcontrols)
return false;
*temp = gpu_temp(gpu);
*fanspeed = gpu_fanspeed(gpu);
*fanpercent = gpu_fanpercent(gpu) + 0.5f;
*engineclock = gpu_engineclock(gpu);
*memclock = gpu_memclock(gpu);
*vddc = 0;
*activity = 0;
*powertune = gpu_powertune(gpu);
return true;
}
void sysfs_cleanup(int nDevs)
{
#ifdef __linux__
if (!has_sysfs_hwcontrols)
return;
has_sysfs_hwcontrols = false;
for (int i = 0; i < nDevs; i++) {
gpus[i].has_sysfs_hwcontrols = false;
gpu_sysfs_info *info = &gpus[i].sysfs_info;
// only overwrite pptable to default -> fd and memory are not released
if (info->pptable != NULL && info->fd_pptable != -1) {
pthread_mutex_lock(&info->rw_lock);
memcpy(info->pptable, info->default_pptable, info->pptable_size);
lseek(info->fd_pptable, 0, SEEK_SET);
write(info->fd_pptable, info->pptable, info->pptable_size);
pthread_mutex_unlock(&info->rw_lock);
}
}
#endif
}
bool init_sysfs_hwcontrols(int nDevs)
{
gpu_temp = &sysfs_gpu_temp;
gpu_engineclock = &sysfs_gpu_engineclock;
gpu_memclock = &sysfs_gpu_memclock;
gpu_vddc = &sysfs_gpu_vddc;
gpu_activity = &sysfs_gpu_activity;
gpu_fanspeed = &sysfs_gpu_fanspeed;
gpu_fanpercent = &sysfs_gpu_fanpercent;
set_powertune = &sysfs_set_powertune;
set_vddc = &sysfs_set_vddc;
set_fanspeed = &sysfs_set_fanspeed;
set_engineclock = &sysfs_set_engineclock;
set_memoryclock = &sysfs_set_memoryclock;
gpu_stats = &sysfs_gpu_stats;
gpu_autotune = &sysfs_gpu_autotune;
extern bool opt_noadl;
if (opt_noadl) {
extern bool adl_active;
adl_active = false;
has_sysfs_hwcontrols = false;
for (int i = 0; i < nDevs; i++) {
gpus[i].has_adl = false;
gpus[i].has_sysfs_hwcontrols = false;
}
return false;
}
for (int i = 0; i < nDevs; ++i) {
gpu_sysfs_info *info = &gpus[i].sysfs_info;
if (!initialized)
sysfs_init(info, i);
info->target_fanpercent = sysfs_gpu_fanpercent(i);
info->last_temp = sysfs_gpu_temp(i);
if (!info->overheat_temp)
info->overheat_temp = opt_overheattemp;
if (!info->target_temp)
info->target_temp = opt_targettemp;
gpus[i].has_sysfs_hwcontrols = (info->fd_temp != -1) & (info->fd_fan != -1);
Tonga_POWERPLAYTABLE *header = (Tonga_POWERPLAYTABLE*) info->pptable;
COMMON_TABLE_HEADER *common_hdr = (COMMON_TABLE_HEADER*) &header->sHeader;
//enable pptable support only for Tonga, Polaris and Fiji (?)
if (info->fd_pptable != -1 &&
(common_hdr->ucTableFormatRevision != 7 || common_hdr->ucTableContentRevision != 1 || header->ucTableRevision != 0)) {
close(info->fd_pptable);
info->fd_pptable = -1;
applog(LOG_WARNING, "No sysfs pptable support for GPU%d (%s)", i, gpus[i].name);
}
if (gpus[i].has_sysfs_hwcontrols)
has_sysfs_hwcontrols = true;
}
initialized = true;
return has_sysfs_hwcontrols;
}