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rocm-systems/projects/rocm-smi-lib/src/rocm_smi_main.cc
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systems-assistant[bot] 857e5ef3ce chore: unset executable permission (#213) 
Co-authored-by: Eisuke Kawashima <e-kwsm@users.noreply.github.com>
Co-authored-by: systems-assistant[bot] <systems-assistant[bot]@users.noreply.github.com>
Co-authored-by: Maisam Arif <Maisam.Arif@amd.com>
2025-09-16 11:06:54 -05:00

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/*
* The University of Illinois/NCSA
* Open Source License (NCSA)
*
* Copyright (c) 2017-2025, Advanced Micro Devices, Inc.
* All rights reserved.
*
* Developed by:
*
* AMD Research and AMD ROC Software Development
*
* Advanced Micro Devices, Inc.
*
* www.amd.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal with the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimers.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimers in
* the documentation and/or other materials provided with the distribution.
* - Neither the names of <Name of Development Group, Name of Institution>,
* nor the names of its contributors may be used to endorse or promote
* products derived from this Software without specific prior written
* permission.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS WITH THE SOFTWARE.
*
*/
#include <dirent.h>
#include <sys/types.h>
#include <unistd.h>
#include <cassert>
#include <cerrno>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <fstream>
#include <functional>
#include <iostream>
#include <memory>
#include <algorithm>
#include <set>
#include <sstream>
#include <string>
#include <utility>
#include <vector>
#include "rocm_smi/rocm_smi.h"
#include "rocm_smi/rocm_smi_device.h"
#include "rocm_smi/rocm_smi_main.h"
#include "rocm_smi/rocm_smi_exception.h"
#include "rocm_smi/rocm_smi_utils.h"
#include "rocm_smi/rocm_smi_kfd.h"
#include "rocm_smi/rocm_smi_logger.h"
static const char *kPathDRMRoot = "/sys/class/drm";
static const char *kPathHWMonRoot = "/sys/class/hwmon";
static const char *kPathPowerRoot = "/sys/kernel/debug/dri";
static const char *kAMDMonitorTypes[] = {"radeon", "amdgpu", ""};
namespace amd {
namespace smi {
static uint32_t GetDeviceIndex(const std::string s) {
std::string t = s;
size_t tmp = t.find_last_not_of("0123456789");
t.erase(0, tmp+1);
assert(stoi(t) >= 0);
return static_cast<uint32_t>(stoi(t));
}
// Find the drm minor from from sysfs path "/sys/class/drm/cardX/device/drm".
// From the directory renderDN in that sysfs path, the drm minor can be
// computed for cardX.
// On success, return drm_minor which is >= 128 otherwise return 0
static uint32_t GetDrmRenderMinor(const std::string s) {
std::ostringstream ss;
std::string drm_path = s;
int drm_minor = 0;
const std::string render_file_prefix = "renderD";
const uint64_t prefix_size = render_file_prefix.size();
drm_path += "/device/drm";
auto drm_dir = opendir(drm_path.c_str());
if (drm_dir == nullptr)
return 0;
auto dentry = readdir(drm_dir);
while (dentry != nullptr) {
std::string render_file = dentry->d_name;
if (!render_file.compare(0, prefix_size, render_file_prefix)) {
drm_minor = stoi(render_file.substr(prefix_size));
if (drm_minor)
break;
}
dentry = readdir(drm_dir);
}
if (closedir(drm_dir)) {
return 0;
}
ss << __PRETTY_FUNCTION__ << " | Discovered drmRenderMinor = "
<< std::to_string(drm_minor) << " | For drm_path = " << drm_path << " | ";
LOG_DEBUG(ss);
return static_cast<uint32_t>(drm_minor);
}
// Find the drm minor from from sysfs path "/sys/class/drm/renderDX/device/drm".
// From the directory cardN in that sysfs path, the card number can be
// computed for renderDX.
// On success, return drm_minor which is >= 128 otherwise return 0xFFFFFFFF
static uint32_t GetCard(const std::string s) {
std::ostringstream ss;
std::string drm_path = s;
int card_num = -1;
const std::string card_file_prefix = "card";
const uint64_t prefix_size = card_file_prefix.size();
drm_path += "/device/drm";
auto card_dir = opendir(drm_path.c_str());
if (card_dir == nullptr)
return static_cast<uint32_t>(-1);
auto dentry = readdir(card_dir);
while (dentry != nullptr) {
std::string card_file = dentry->d_name;
if (!card_file.compare(0, prefix_size, card_file_prefix)) {
card_num = stoi(card_file.substr(prefix_size));
if (card_num)
break;
}
dentry = readdir(card_dir);
}
if (closedir(card_dir)) {
return static_cast<uint32_t>(-1);
}
ss << __PRETTY_FUNCTION__ << " | Discovered card = "
<< std::to_string(card_num) << " | For drm_path = " << drm_path << " | ";
LOG_DEBUG(ss);
return static_cast<uint32_t>(card_num);
}
// Determine if provided string is a bdfid pci path directory of the form
// XXXX:XX:XX.X,
// domain:bus:device.function
//
// where X is a hex integer (lower case is expected). If so, write the value
// to bdfid
static bool bdfid_from_path(const std::string in_name, uint64_t *bdfid) {
char *p = nullptr;
char *name_start;
char name[13] = {'\0'};
uint64_t tmp;
assert(bdfid != nullptr);
if (in_name.size() != 12) {
return false;
}
tmp = in_name.copy(name, 12);
assert(tmp == 12);
// BDFID = ((<DOMAIN> & 0xffff) << 32) | ((<BUS> & 0xff) << 8) |
// ((device& 0x1f) <<3 ) | (function & 0x7)
*bdfid = 0;
name_start = name;
p = name_start;
// Match this: XXXX:xx:xx.x
tmp = std::strtoul(p, &p, 16);
if (*p != ':' || p - name_start != 4) {
return false;
}
*bdfid |= tmp << 32;
// Match this: xxxx:XX:xx.x
p++; // Skip past ':'
tmp = std::strtoul(p, &p, 16);
if (*p != ':' || p - name_start != 7) {
return false;
}
*bdfid |= tmp << 8;
// Match this: xxxx:xx:XX.x
p++; // Skip past ':'
tmp = std::strtoul(p, &p, 16);
if (*p != '.' || p - name_start != 10) {
return false;
}
*bdfid |= tmp << 3;
// Match this: xxxx:xx:xx.X
p++; // Skip past '.'
tmp = std::strtoul(p, &p, 16);
if (*p != '\0' || p - name_start != 12) {
return false;
}
*bdfid |= tmp;
return true;
}
// 0 = successful bdfid found
// 1 = not a good bdfid found
[[maybe_unused]] static uint32_t ConstructBDFID(std::string path, uint64_t *bdfid) {
std::ostringstream ss;
assert(bdfid != nullptr);
const unsigned int MAX_BDF_LENGTH = 512;
char tpath[MAX_BDF_LENGTH] = {'\0'};
ssize_t ret;
memset(tpath, 0, MAX_BDF_LENGTH);
ret = readlink(path.c_str(), tpath, MAX_BDF_LENGTH);
assert(ret > 0);
assert(ret < MAX_BDF_LENGTH);
if (ret <= 0 || ret >= MAX_BDF_LENGTH) {
ss << __PRETTY_FUNCTION__ << " | readlink failed for path = "
<< path << " | ret = " << ret
<< " | errno = " << errno
<< " | error = " << strerror(errno);
// std::cout << ss.str() << std::endl;
LOG_ERROR(ss);
return 1;
}
// We are looking for the last element in the path that has the form
// XXXX:XX:XX.X, where X is a hex integer (lower case is expected)
std::size_t slash_i;
std::size_t end_i;
std::string tmp;
std::string tpath_str(tpath);
end_i = tpath_str.size() - 1;
while (end_i > 0) {
slash_i = tpath_str.find_last_of('/', end_i);
tmp = tpath_str.substr(slash_i + 1, end_i - slash_i);
if (bdfid_from_path(tmp, bdfid)) {
ss << __PRETTY_FUNCTION__ << " | Found bdfid = "
<< print_int_as_hex(*bdfid, true, 8) << " | from path = "
<< path << " | tmp = " << tmp << std::endl;
LOG_INFO(ss);
return 0;
}
end_i = slash_i - 1;
}
ss << __PRETTY_FUNCTION__ << " | No valid bdfid found in path = "
<< path << " | tpath = " << tpath
<< " | errno = " << errno
<< " | error = " << strerror(errno) << std::endl;
LOG_ERROR(ss);
return 1;
}
void
RocmSMI::Initialize(uint64_t flags) {
auto i = 0;
uint32_t ret;
int i_ret;
std::ostringstream ss;
assert(ref_count_ == 1);
if (ref_count_ != 1) {
throw amd::smi::rsmi_exception(RSMI_INITIALIZATION_ERROR,
"Unexpected: RocmSMI ref_count_ != 1");
}
init_options_ = flags;
euid_ = geteuid();
GetEnvVariables();
// To help debug env variable issues
// debugRSMIEnvVarInfo();
if (ROCmLogging::Logger::getInstance()->isLoggerEnabled()) {
ROCmLogging::Logger::getInstance()->enableAllLogLevels();
LOG_ALWAYS("=============== ROCM SMI initialize ================");
logSystemDetails();
}
// Leaving below to allow developers to check current log settings
// std::string logSettings = ROCmLogging::Logger::getInstance()->getLogSettings();
// std::cout << "Current log settings:\n" << logSettings << std::endl;
while (!std::string(kAMDMonitorTypes[i]).empty()) {
amd_monitor_types_.insert(kAMDMonitorTypes[i]);
++i;
}
// DiscoverAmdgpuDevices() will search for devices and monitors and update
// internal data structures.
ret = DiscoverAmdgpuDevices();
if (ret != 0) {
throw amd::smi::rsmi_exception(RSMI_INITIALIZATION_ERROR,
"DiscoverAmdgpuDevices() failed.");
}
ss << __PRETTY_FUNCTION__ << " | about to sort by BDF..." << std::endl;
LOG_DEBUG(ss);
std::shared_ptr<amd::smi::Device> dev;
// Sort index based on the BDF, collect BDF id firstly.
std::vector<std::pair<uint64_t, std::shared_ptr<amd::smi::Device>>> dv_to_id;
dv_to_id.reserve(devices_.size());
for (uint32_t dv_ind = 0; dv_ind < devices_.size(); ++dv_ind) {
dev = devices_[dv_ind];
uint64_t bdfid = dev->bdfid();
bdfid = bdfid & 0xFFFFFFFF0FFFFFFF; // clear out partition id in bdf
// NOTE: partition_id is not part of bdf (but is part of pci_id)
// which is why it is removed in sorting
dv_to_id.push_back({bdfid, dev});
}
ss << __PRETTY_FUNCTION__ << " Sort index based on BDF.";
LOG_DEBUG(ss);
// Stable sort to keep the order if bdf is equal.
std::stable_sort(dv_to_id.begin(), dv_to_id.end(), []
(const std::pair<uint64_t, std::shared_ptr<amd::smi::Device>>& p1,
const std::pair<uint64_t, std::shared_ptr<amd::smi::Device>>& p2) {
return p1.first < p2.first;
});
devices_.clear();
for (uint32_t dv_ind = 0; dv_ind < dv_to_id.size(); ++dv_ind) {
devices_.push_back(dv_to_id[dv_ind].second);
}
std::map<uint64_t, std::shared_ptr<KFDNode>> tmp_map;
i_ret = DiscoverKFDNodes(&tmp_map);
if (i_ret != 0) {
throw amd::smi::rsmi_exception(RSMI_INITIALIZATION_ERROR,
"Failed to initialize rocm_smi library (KFD node discovery).");
}
std::map<std::pair<uint32_t, uint32_t>, std::shared_ptr<IOLink>>
io_link_map_tmp;
i_ret = DiscoverIOLinks(&io_link_map_tmp);
if (i_ret != 0) {
throw amd::smi::rsmi_exception(RSMI_INITIALIZATION_ERROR,
"Failed to initialize rocm_smi library (IO Links discovery).");
}
std::map<std::pair<uint32_t, uint32_t>, std::shared_ptr<IOLink>>::iterator it;
for (it = io_link_map_tmp.begin(); it != io_link_map_tmp.end(); it++)
io_link_map_[it->first] = it->second;
// Remove any drm nodes that don't have a corresponding readable kfd node.
// kfd nodes will not be added if their properties file is not readable.
auto dev_iter = devices_.begin();
while (dev_iter != devices_.end()) {
uint64_t bdfid = (*dev_iter)->bdfid();
if (tmp_map.find(bdfid) == tmp_map.end()) {
ss << __PRETTY_FUNCTION__ << " | removing device = "
<< (*dev_iter)->path() << "; bdfid = " << std::to_string(bdfid);
dev_iter = devices_.erase(dev_iter);
LOG_DEBUG(ss);
continue;
}
dev_iter++;
}
// 1. construct kfd_node_map_ with gpu_id as key and *Device as value
// 2. for each kfd node, write the corresponding dv_ind
// 3. for each amdgpu device, write the corresponding gpu_id
// 4. for each amdgpu device, attempt to store it's boot partition
for (uint32_t dv_ind = 0; dv_ind < devices_.size(); ++dv_ind) {
dev = devices_[dv_ind];
uint64_t bdfid = dev->bdfid();
assert(tmp_map.find(bdfid) != tmp_map.end());
if (tmp_map.find(bdfid) == tmp_map.end()) {
throw amd::smi::rsmi_exception(RSMI_INITIALIZATION_ERROR,
"amdgpu device bdfid has no KFD matching node");
}
tmp_map[bdfid]->set_amdgpu_dev_index(dv_ind);
dev_ind_to_node_ind_map_[dv_ind] = tmp_map[bdfid]->node_index();
uint64_t gpu_id = tmp_map[bdfid]->gpu_id();
dev->set_kfd_gpu_id(gpu_id);
kfd_node_map_[gpu_id] = tmp_map[bdfid];
// store each device boot partition state, if file doesn't exist
dev->storeDevicePartitions(dv_ind);
}
// Assists displaying GPU information after device enumeration
// Otherwise GPU related info will not be discoverable
if (ROCmLogging::Logger::getInstance()->isLoggerEnabled()) {
logSystemDetails();
}
// Leaving below to help debug temp file issues
// displayAppTmpFilesContent();
std::string amdGPUDeviceList = displayAllDevicePaths(devices_);
ss << __PRETTY_FUNCTION__ << " | current device paths = " << amdGPUDeviceList;
// std::cout << ss.str() << std::endl;
LOG_DEBUG(ss);
}
void
RocmSMI::Cleanup() {
devices_.clear();
monitors_.clear();
if (kfd_notif_evt_fh() >= 0) {
int ret = close(kfd_notif_evt_fh());
if (ret < 0) {
throw amd::smi::rsmi_exception(RSMI_STATUS_FILE_ERROR,
"Failed to close kfd file handle on shutdown.");
}
}
}
RocmSMI::RocmSMI(uint64_t flags) : init_options_(flags),
kfd_notif_evt_fh_(-1), kfd_notif_evt_fh_refcnt_(0) {
}
RocmSMI::~RocmSMI() = default;
RocmSMI& RocmSMI::getInstance(uint64_t flags) {
// Assume c++11 or greater. static objects will be created by only 1 thread
// and creation will be thread-safe.
static RocmSMI singleton(flags);
return singleton;
}
static uint32_t GetEnvVarUInteger(const char *ev_str) {
#ifndef DEBUG
(void)ev_str;
#else
ev_str = getenv(ev_str);
if (ev_str) {
int ret = atoi(ev_str);
assert(ret >= 0);
return static_cast<uint32_t>(ret);
}
#endif
return 0;
}
// provides a way to get env variable detail in both debug & release
// helps enable full logging
// RSMI_LOGGING = 1, output to logs only
// RSMI_LOGGING = 2, output to console only
// RSMI_LOGGING = 3, output to logs and console
static uint32_t getRSMIEnvVar_LoggingEnabled(const char *ev_str) {
uint32_t ret = 0;
ev_str = getenv(ev_str);
if (ev_str != nullptr) {
int ev_ret = atoi(ev_str);
ret = static_cast<uint32_t>(ev_ret);
}
return ret;
}
static inline std::unordered_set<uint32_t> GetEnvVarUIntegerSets(
const char *ev_str) {
std::unordered_set<uint32_t> returnSet;
#ifndef DEBUG
(void)ev_str;
#else
ev_str = getenv(ev_str);
if(ev_str == nullptr) { return returnSet; }
std::string stringEnv = ev_str;
if (!stringEnv.empty()) {
// parse out values by commas
std::string parsedVal;
std::istringstream ev_str_ss(stringEnv);
while (std::getline(ev_str_ss, parsedVal, ',')) {
int parsedInt = std::stoi(parsedVal);
assert(parsedInt >= 0);
uint32_t parsedUInt = static_cast<uint32_t>(parsedInt);
returnSet.insert(parsedUInt);
}
}
#endif
return returnSet;
}
// Get and store env. variables in this method
void RocmSMI::GetEnvVariables(void) {
env_vars_.logging_on = getRSMIEnvVar_LoggingEnabled("RSMI_LOGGING");
#ifndef DEBUG
(void)GetEnvVarUInteger(nullptr); // This is to quiet release build warning.
env_vars_.debug_output_bitfield = 0;
env_vars_.path_DRM_root_override = nullptr;
env_vars_.path_HWMon_root_override = nullptr;
env_vars_.path_power_root_override = nullptr;
env_vars_.debug_inf_loop = 0;
env_vars_.enum_overrides.clear();
#else
env_vars_.debug_output_bitfield = GetEnvVarUInteger("RSMI_DEBUG_BITFIELD");
env_vars_.path_DRM_root_override = getenv("RSMI_DEBUG_DRM_ROOT_OVERRIDE");
env_vars_.path_HWMon_root_override = getenv("RSMI_DEBUG_HWMON_ROOT_OVERRIDE");
env_vars_.path_power_root_override = getenv("RSMI_DEBUG_PP_ROOT_OVERRIDE");
env_vars_.debug_inf_loop = GetEnvVarUInteger("RSMI_DEBUG_INFINITE_LOOP");
env_vars_.enum_overrides = GetEnvVarUIntegerSets("RSMI_DEBUG_ENUM_OVERRIDE");
#endif
}
const RocmSMI_env_vars& RocmSMI::getEnv(void) {
return env_vars_;
}
bool RocmSMI::isLoggingOn(void) {
bool isLoggingOn = false;
GetEnvVariables();
if (this->env_vars_.logging_on > 0
&& this->env_vars_.logging_on <= 3) {
isLoggingOn = true;
}
return isLoggingOn;
}
uint32_t RocmSMI::getLogSetting() {
return this->env_vars_.logging_on;
}
void RocmSMI::debugRSMIEnvVarInfo(void) {
std::cout << __PRETTY_FUNCTION__
<< RocmSMI::getInstance().getRSMIEnvVarInfo();
}
std::string RocmSMI::getRSMIEnvVarInfo(void) {
std::ostringstream ss;
ss << "\n\tRSMI_DEBUG_BITFIELD = "
<< ((env_vars_.debug_output_bitfield == 0) ? "<undefined>"
: std::to_string(env_vars_.debug_output_bitfield))
<< std::endl;
ss << "\tRSMI_DEBUG_DRM_ROOT_OVERRIDE = "
<< ((env_vars_.path_DRM_root_override == nullptr)
? "<undefined>" : env_vars_.path_DRM_root_override)
<< std::endl;
ss << "\tRSMI_DEBUG_HWMON_ROOT_OVERRIDE = "
<< ((env_vars_.path_HWMon_root_override == nullptr)
? "<undefined>" : env_vars_.path_HWMon_root_override)
<< std::endl;
ss << "\tRSMI_DEBUG_PP_ROOT_OVERRIDE = "
<< ((env_vars_.path_power_root_override == nullptr)
? "<undefined>" : env_vars_.path_power_root_override)
<< std::endl;
ss << "\tRSMI_DEBUG_INFINITE_LOOP = "
<< ((env_vars_.debug_inf_loop == 0) ? "<undefined>"
: std::to_string(env_vars_.debug_inf_loop))
<< std::endl;
ss << "\tRSMI_LOGGING = "
<< getLogSetting() << std::endl;
bool isLoggingOn = RocmSMI::isLoggingOn() ? true : false;
ss << "\tRSMI_LOGGING (are logs on) = "
<< (isLoggingOn ? "TRUE" : "FALSE") << std::endl;
ss << "\tRSMI_DEBUG_ENUM_OVERRIDE = {";
if (env_vars_.enum_overrides.empty()) {
ss << "}" << std::endl;
return ss.str();
}
for (auto it=env_vars_.enum_overrides.begin();
it != env_vars_.enum_overrides.end(); ++it) {
DevInfoTypes type = static_cast<DevInfoTypes>(*it);
ss << (std::to_string(*it) + " (" + Device::get_type_string(type) + ")");
auto temp_it = it;
if (++temp_it != env_vars_.enum_overrides.end()) {
ss << ", ";
}
}
ss << "}" << std::endl;
return ss.str();
}
std::shared_ptr<Monitor>
RocmSMI::FindMonitor(std::string monitor_path) {
std::string tmp;
std::string err_msg;
std::string mon_name;
std::shared_ptr<Monitor> m;
if (!FileExists(monitor_path.c_str())) {
return nullptr;
}
auto mon_dir = opendir(monitor_path.c_str());
if (mon_dir == nullptr) {
return nullptr;
}
auto dentry = readdir(mon_dir);
while (dentry != nullptr) {
if (dentry->d_name[0] == '.') {
dentry = readdir(mon_dir);
continue;
}
mon_name = monitor_path;
mon_name += "/";
mon_name += dentry->d_name;
tmp = mon_name + "/name";
if (FileExists(tmp.c_str())) {
std::ifstream fs;
fs.open(tmp);
if (!fs.is_open()) {
err_msg = "Failed to open monitor file ";
err_msg += tmp;
err_msg += ".";
perror(err_msg.c_str());
return nullptr;
}
std::string mon_type;
fs >> mon_type;
fs.close();
if (amd_monitor_types_.find(mon_type) != amd_monitor_types_.end()) {
m = std::make_shared<Monitor>(mon_name, &env_vars_);
m->setTempSensorLabelMap();
m->setVoltSensorLabelMap();
break;
}
}
dentry = readdir(mon_dir);
}
if (closedir(mon_dir)) {
err_msg = "Failed to close monitor directory ";
err_msg += kPathHWMonRoot;
err_msg += ".";
perror(err_msg.c_str());
return nullptr;
}
return m;
}
void RocmSMI::AddToDeviceList(std::string dev_name, uint64_t bdfid) {
static const int BYTE = 8;
std::ostringstream ss;
ss << __PRETTY_FUNCTION__ << " | ======= start =======";
LOG_TRACE(ss);
auto dev_path = std::string(kPathDRMRoot);
dev_path += "/";
dev_path += dev_name;
auto dev = std::make_shared<Device>(dev_path, &env_vars_);
std::shared_ptr<Monitor> m = FindMonitor(dev_path + "/device/hwmon");
dev->set_monitor(m);
const std::string& d_name = dev_name;
uint32_t card_indx = GetDeviceIndex(d_name);
uint32_t drmRenderMinor = GetDrmRenderMinor(dev_path);
dev->set_drm_render_minor(drmRenderMinor);
dev->set_card_index(card_indx);
GetSupportedEventGroups(card_indx, dev->supported_event_groups());
if (bdfid != 0) {
dev->set_bdfid(bdfid);
}
devices_.push_back(dev);
ss << __PRETTY_FUNCTION__
<< " | Adding to device list dev_name = " << dev_name << "\n"
<< " | path = " << dev_path << "\n"
<< " | dName = " << d_name << "\n"
<< " | bdfid = " << (bdfid == UINT64_MAX ?
"N/A" : print_int_as_hex(bdfid, true, 2*BYTE)) << "\n"
<< " | card index = " << std::to_string(card_indx) << "\n"
<< " | drmRenderMinor = " << std::to_string(drmRenderMinor) << "\n"
<< " | supported_event_groups = " << dev->supported_event_groups() << "\n";
// std::cout << ss.str() << std::endl;
LOG_DEBUG(ss);
}
// AddToDeviceList2 is used to add a device to the device list.
// [precondition] a. Iterate through KFD to find all accessible devices.
// [precondition] b. Provide BDFID of the device & the device path (card or render path)
// 1. Provide to function:
// [optional; Will populate] rsmi_device_enumeration_t->card_index
// [optional; Will populate
// if card or render path provided] rsmi_device_enumeration_t->dev_name
// [optional; Will populate] rsmi_device_enumeration_t->drm_render_path
// [optional; Will populate] rsmi_device_enumeration_t->drm_card_path
// [optional; Will populate] rsmi_device_enumeration_t->drm_render_minor
// [Required] rsmi_device_enumeration_t->bdfid
rsmi_status_t RocmSMI::AddToDeviceList2(RocmSMI::rsmi_device_enumeration_t device) {
static const int BYTE = 8;
std::ostringstream ss;
ss << __PRETTY_FUNCTION__ << " | ======= start ======="
<< "\n | card index = [" << std::to_string(device.card_index) << "]\n"
<< " | dev_name = [" << device.dev_name << "]\n"
<< " | drm_render_path = [" << device.drm_render_path << "]\n"
<< " | drm_card_path = [" << device.drm_card_path << "]\n"
<< " | drm_render_minor = [" << std::to_string(device.drm_render_minor)
<< "]\n | bdfid (value) = [" << (device.bdfid == UINT64_MAX ?
"N/A" : print_int_as_hex(device.bdfid, true, 4*BYTE)) << "]\n"
<< " | bdfid (str) = ["
<< std::hex << std::setfill('0') << std::setw(4)
<< ((device.bdfid >> 32) & static_cast<uint64_t>(0xFFFFFFFF)) << ":"
<< std::hex << std::setfill('0') << std::setw(2) << ((device.bdfid >> 8)
& static_cast<uint64_t>(0xFF)) << ":"
<< std::hex << std::setfill('0') << std::setw(2) << ((device.bdfid >> 3)
& static_cast<uint64_t>(0x1F)) << "."
<< std::hex << std::setfill('0') << std::setw(1) << +(device.bdfid
& static_cast<uint64_t>(0x7)) << "]\n";
// std::cout << ss.str() << std::endl;
LOG_TRACE(ss);
auto dev_path = std::string(kPathDRMRoot);
if (device.dev_name.empty()) {
ss << __PRETTY_FUNCTION__ << " | dev_name is empty";
// std::cout << ss.str() << std::endl;
LOG_DEBUG(ss);
dev_path += "/";
dev_path += ("renderD" + std::to_string(device.drm_render_minor));
uint32_t card_num = GetCard(dev_path);
device.dev_name = "card" + std::to_string(card_num);
device.drm_render_path = dev_path;
device.drm_card_path = std::string(kPathDRMRoot) + "/card" +
std::to_string(card_num);
device.card_index = card_num;
}
auto dev = std::make_shared<Device>(dev_path, &env_vars_);
std::shared_ptr<Monitor> m = FindMonitor(dev_path + "/device/hwmon");
dev->set_monitor(m);
const std::string& d_name = device.dev_name;
uint32_t card_indx = GetDeviceIndex(d_name);
uint32_t drmRenderMinor = GetDrmRenderMinor(dev_path);
dev->set_drm_render_minor(drmRenderMinor);
dev->set_card_index(card_indx);
GetSupportedEventGroups(card_indx, dev->supported_event_groups());
if (device.bdfid != 0) {
dev->set_bdfid(device.bdfid);
}
devices_.push_back(dev);
ss << __PRETTY_FUNCTION__
<< " | Adding to device list dev_name = " << device.dev_name << "\n"
<< " | path = " << dev_path << "\n"
<< " | dName = " << d_name << "\n"
<< " | bdfid = " << (device.bdfid == UINT64_MAX ?
"N/A" : print_int_as_hex(device.bdfid, true, 8*BYTE)) << "\n"
<< " | card index = " << std::to_string(card_indx) << "\n"
<< " | drmRenderMinor = " << std::to_string(drmRenderMinor) << "\n"
<< " | supported_event_groups = " << dev->supported_event_groups() << "\n";
ss << " | ======= rsmi_device_enumeration_t details =======\n"
<< " | card index = [" << std::to_string(device.card_index) << "]\n"
<< " | dev_name = [" << device.dev_name << "]\n"
<< " | drm_render_path = [" << device.drm_render_path << "]\n"
<< " | drm_card_path = [" << device.drm_card_path << "]\n"
<< " | drm_render_minor = [" << std::to_string(device.drm_render_minor)
<< "]\n | bdfid (value) = [" << (device.bdfid == UINT64_MAX ?
"N/A" : print_int_as_hex(device.bdfid, true, 8*BYTE)) << "]\n"
<< " | bdfid (str) = ["
<< std::hex << std::setfill('0') << std::setw(4)
<< ((device.bdfid >> 32) & static_cast<uint64_t>(0xFFFFFFFF)) << ":"
<< std::hex << std::setfill('0') << std::setw(2) << ((device.bdfid >> 8)
& static_cast<uint64_t>(0xFF)) << ":"
<< std::hex << std::setfill('0') << std::setw(2) << ((device.bdfid >> 3)
& static_cast<uint64_t>(0x1F)) << "."
<< std::hex << std::setfill('0') << std::setw(1) << +(device.bdfid
& static_cast<uint64_t>(0x7)) << "]\n"
<< " | END";
// std::cout << ss.str() << std::endl;
LOG_DEBUG(ss);
return RSMI_STATUS_SUCCESS;
}
static const uint32_t kAmdGpuId = 0x1002;
[[maybe_unused]] static bool isAMDGPU(std::string dev_path) {
bool isAmdGpu = false;
std::ostringstream ss;
std::string vend_path = dev_path + "/device/vendor";
if (!FileExists(vend_path.c_str())) {
ss << __PRETTY_FUNCTION__ << " | device_path = " << dev_path
<< " is an amdgpu device - " << (isAmdGpu ? "TRUE": " FALSE");
LOG_DEBUG(ss);
return isAmdGpu;
}
std::ifstream fs;
fs.open(vend_path);
if (!fs.is_open()) {
ss << __PRETTY_FUNCTION__ << " | device_path = " << dev_path
<< " is an amdgpu device - " << (isAmdGpu ? "TRUE": " FALSE");
LOG_DEBUG(ss);
return isAmdGpu;
}
uint32_t vendor_id;
fs >> std::hex >> vendor_id;
fs.close();
if (vendor_id == kAmdGpuId) {
isAmdGpu = true;
}
ss << __PRETTY_FUNCTION__ << " | device_path = " << dev_path
<< " is an amdgpu device - " << (isAmdGpu ? "TRUE": " FALSE");
LOG_DEBUG(ss);
return isAmdGpu;
}
uint32_t GetLargestNodeNumber(const std::string& path = "/sys/class/kfd/kfd/topology/nodes/") {
std::ostringstream ss;
uint32_t largest_node_number = 0;
// Open the directory
DIR* dir = opendir(path.c_str());
if (!dir) {
// Return UINT32_MAX on error
ss << __PRETTY_FUNCTION__ << " | Failed to open directory: " << path
<< " | errno = " << errno
<< " | error = " << strerror(errno);
// std::cout << ss.str() << std::endl;
LOG_ERROR(ss);
return UINT32_MAX;
}
struct dirent* entry;
while ((entry = readdir(dir)) != nullptr) {
// Skip "." and ".."
if (entry->d_name[0] == '.') {
continue;
}
// Check if the directory name is a number
std::string dir_name(entry->d_name);
if (std::all_of(dir_name.begin(), dir_name.end(), ::isdigit)) {
uint32_t node_number = static_cast<uint32_t>(std::stoul(dir_name));
largest_node_number = std::max(largest_node_number, node_number);
}
}
if (closedir(dir)) {
// Return UINT32_MAX on error
ss << __PRETTY_FUNCTION__ << " | Failed to close directory: " << path
<< " | errno = " << errno
<< " | error = " << strerror(errno);
// std::cout << ss.str() << std::endl;
LOG_ERROR(ss);
return UINT32_MAX;
}
return largest_node_number;
}
uint32_t RocmSMI::DiscoverAmdgpuDevices(void) {
std::string err_msg;
std::ostringstream ss;
// If this gets called more than once, clear previous findings.
devices_.clear();
monitors_.clear();
uint32_t max_nodes = GetLargestNodeNumber();
ss << __PRETTY_FUNCTION__ << " | Discovered a potential of "
<< std::to_string(max_nodes) << " kfd nodes";
// std::cout << ss.str() << std::endl;
LOG_DEBUG(ss);
if (max_nodes == UINT32_MAX) {
ss << __PRETTY_FUNCTION__ << " | Failed to get largest node number";
// std::cout << ss.str() << std::endl;
LOG_ERROR(ss);
return 1;
}
// Iterate through all nodes
// and read all properties
// under /sys/class/kfd/kfd/topology/nodes/
// and add to systemNodes vector
struct systemNode {
uint32_t s_node_id = 0;
uint64_t s_gpu_id = 0;
uint64_t s_unique_id = 0;
uint64_t s_location_id = 0;
uint64_t s_bdf = 0;
uint64_t s_domain = 0;
uint8_t s_bus = 0;
uint8_t s_device = 0;
uint8_t s_function = 0;
uint8_t s_partition_id = 0;
uint32_t s_drm_render_minor = 0;
uint64_t padding = 0; // padding added in case new changes in future
};
std::multimap<uint64_t, systemNode> allSystemNodes;
std::set<uint32_t> gpuNodeIdsFound;
std::vector<systemNode> systemNodes;
uint32_t node_id = 0;
static const int BYTE = 8;
while (node_id <= max_nodes) {
ss << __PRETTY_FUNCTION__ << " | node_id = " << std::to_string(node_id);
// std::cout << ss.str() << std::endl;
LOG_DEBUG(ss);
uint64_t gpu_id = 0, unique_id = 0, location_id = 0, domain = 0, render_d = 0;
int ret_gpu_id = get_gpu_id(node_id, &gpu_id);
int ret_unique_id = read_node_properties(node_id, "unique_id", &unique_id);
int ret_loc_id =
read_node_properties(node_id, "location_id", &location_id);
int ret_domain = read_node_properties(node_id, "domain", &domain);
int ret_renderd = read_node_properties(node_id, "drm_render_minor", &render_d);
bool isANode = (ret_gpu_id == 0 &&
(ret_domain == 0 && ret_loc_id == 0 && ret_renderd == 0));
ss << __PRETTY_FUNCTION__ << " | isAGpuNode: "
<< (isANode ? "TRUE" : "FALSE") << "; is_vm_guest(): "
<< (is_vm_guest() ? "TRUE" : "FALSE")
<< "\nret_gpu_id: " << ret_gpu_id
<< "; ret_domain: " << ret_domain
<< "; ret_loc_id: " << ret_loc_id
<< "; ret_unique_id: " << ret_unique_id
<< "\nret_renderd: " << ret_renderd
<< "\n[node_id = " << print_unsigned_hex_and_int(node_id) << "\n"
<< "; gpu_id = " << print_unsigned_hex_and_int(gpu_id) << "\n"
<< "; unique_id = " << print_unsigned_hex_and_int(unique_id) << "\n"
<< "; location_id = " << print_unsigned_hex_and_int(location_id) << "\n"
<< "; domain = " << print_unsigned_hex_and_int(domain) << "\n"
<< "; drm_render_minor = " << print_unsigned_hex_and_int(render_d)
<< "]\n";
LOG_DEBUG(ss);
if (isANode || (is_vm_guest() && ret_gpu_id == 0)) {
// Do not try to build a node if one of these fields
// do not exist in KFD (0 as values okay)
systemNode myNode;
myNode.s_node_id = node_id;
myNode.s_gpu_id = gpu_id;
myNode.s_unique_id = unique_id;
myNode.s_location_id = location_id;
myNode.s_domain = domain & 0xFFFFFFFF;
myNode.s_bdf = (myNode.s_domain << 32) | (myNode.s_location_id);
myNode.s_bus = ((myNode.s_location_id >> 8) & 0xFF);
myNode.s_device = ((myNode.s_location_id >> 3) & 0x1F);
myNode.s_function = myNode.s_location_id & 0x7;
myNode.s_partition_id = ((myNode.s_location_id >> 28) & 0xF);
myNode.s_drm_render_minor = static_cast<uint32_t>((ret_renderd == 0) ? render_d : 0);
if (gpu_id != 0) { // only add gpu nodes, 0 = CPU
auto ret = gpuNodeIdsFound.insert(node_id);
if (ret.second != false) {
// only print out nodes which do not already exist
ss << __PRETTY_FUNCTION__ << " | isAGpuNode: "
<< (isANode ? "TRUE" : "FALSE") << "; is_vm_guest(): "
<< (is_vm_guest() ? "TRUE" : "FALSE")
<< "\nret_gpu_id: " << ret_gpu_id
<< "; ret_domain: " << ret_domain
<< "; ret_loc_id: " << ret_loc_id
<< "; ret_unique_id: " << ret_unique_id
<< "\n[node_id = " << print_unsigned_hex_and_int(node_id) << "\n"
<< "; gpu_id = " << print_unsigned_hex_and_int(gpu_id) << "\n"
<< "; unique_id = " << print_unsigned_hex_and_int(unique_id) << "\n"
<< "; location_id = " << print_unsigned_hex_and_int(location_id) << "\n"
<< "; domain = " << print_unsigned_hex_and_int(domain) << "\n"
<< "; bus = " << print_unsigned_hex_and_int(myNode.s_bus) << "\n"
<< "; device = " << print_unsigned_hex_and_int(myNode.s_device) << "\n"
<< "; function = " << print_unsigned_hex_and_int(myNode.s_function) << "\n"
<< "; partition_id = " << print_unsigned_hex_and_int(myNode.s_partition_id) << "\n"
<< "; bdf = " << print_unsigned_hex_and_int(myNode.s_bdf) << "\n"
<< "; drm_render_minor = " << print_unsigned_hex_and_int(myNode.s_drm_render_minor)
<< "]\n";
LOG_DEBUG(ss);
}
systemNodes.push_back(myNode);
}
}
node_id++;
}
ss << __PRETTY_FUNCTION__ << " | Ordered system nodes found = {";
for (auto i : systemNodes) {
ss << "\n[node_id = " << std::to_string(i.s_node_id) << "\n"
<< "; gpu_id = " << std::to_string(i.s_gpu_id) << "\n"
<< "; unique_id = " << std::to_string(i.s_unique_id) << "\n"
<< "; location_id = " << std::to_string(i.s_location_id) << "\n"
<< "; bdf = " << print_int_as_hex(i.s_bdf) << "\n"
<< "; domain = " << print_int_as_hex(i.s_domain, true, 2*BYTE) << "\n"
<< "; bus = " << print_int_as_hex(i.s_bus, true, BYTE) << "\n"
<< "; device = " << print_int_as_hex(i.s_device, true, BYTE) << "\n"
<< "; function = " << std::to_string(i.s_function) << "\n"
<< "; partition_id = " << std::to_string(i.s_partition_id) << "\n"
<< "; drm_render_minor = " << std::to_string(i.s_drm_render_minor)
<< "], \n";
rsmi_device_enumeration_t rsmi_device;
rsmi_device.dev_name = "";
rsmi_device.bdfid = i.s_bdf;
rsmi_device.drm_render_minor = i.s_drm_render_minor;
AddToDeviceList2(rsmi_device);
}
ss << "}";
// std::cout << ss.str() << std::endl;
LOG_DEBUG(ss);
return 0;
}
// Since these sysfs files require sudo access, we won't discover them
// with rsmi_init() (and thus always require the user to use "sudo".
// Instead, we will discover() all the power monitors the first time
// they are needed and then check for previous discovery on each subsequent
// call.
int RocmSMI::DiscoverAMDPowerMonitors(bool force_update) {
if (force_update) {
power_mons_.clear();
}
if (!power_mons_.empty()) {
return 0;
}
errno = 0;
auto dri_dir = opendir(kPathPowerRoot);
if (dri_dir == nullptr) {
return errno;
}
auto dentry = readdir(dri_dir);
std::string mon_name;
std::string tmp;
while (dentry != nullptr) {
if (dentry->d_name[0] == '.') {
dentry = readdir(dri_dir);
continue;
}
mon_name = kPathPowerRoot;
mon_name += "/";
mon_name += dentry->d_name;
tmp = mon_name + "/amdgpu_pm_info";
if (FileExists(tmp.c_str())) {
std::shared_ptr<PowerMon> mon =
std::make_shared<PowerMon>(mon_name, &env_vars_);
power_mons_.push_back(mon);
mon->set_dev_index(GetDeviceIndex(dentry->d_name));
}
dentry = readdir(dri_dir);
}
errno = 0;
if (closedir(dri_dir)) {
power_mons_.clear();
return errno;
}
for (const auto& m : power_mons_) {
for (const auto& d : devices_) {
if (m->dev_index() == d->index()) {
d->set_power_monitor(m);
break;
}
}
}
return 0;
}
uint32_t RocmSMI::IterateSMIDevices(
std::function<uint32_t(std::shared_ptr<Device>&, void *)> func, void *p) {
if (func == nullptr) {
return 1;
}
auto d = devices_.begin();
uint32_t ret;
while (d != devices_.end()) {
ret = func(*d, p);
if (ret != 0) {
return ret;
}
++d;
}
return 0;
}
int RocmSMI::get_node_index(uint32_t dv_ind, uint32_t *node_ind) {
if (dev_ind_to_node_ind_map_.find(dv_ind) == dev_ind_to_node_ind_map_.end()) {
return EINVAL;
}
*node_ind = dev_ind_to_node_ind_map_[dv_ind];
return 0;
}
int RocmSMI::get_io_link_weight(uint32_t node_from, uint32_t node_to,
uint64_t *weight) {
assert(weight != nullptr);
if (weight == nullptr) {
return EINVAL;
}
if (io_link_map_.find(std::make_pair(node_from, node_to)) ==
io_link_map_.end()) {
return EINVAL;
}
*weight = io_link_map_[std::make_pair(node_from, node_to)]->weight();
return 0;
}
} // namespace smi
} // namespace amd
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