Merge branch 'dev' into evo

src/backend/opencl/wrappers/AdlLib_linux.cpp

@@ -36,27 +36,29 @@ bool AdlLib::m_ready                = false;
 static const std::string kPrefix    = "/sys/bus/pci/drivers/amdgpu/";
 
 
-static inline bool sysfs_is_file(const char *path)
+static inline bool sysfs_is_file(const std::string &path)
 {
     struct stat sb;
 
-    return stat(path, &sb) == 0 && ((sb.st_mode & S_IFMT) == S_IFREG);
+    return stat(path.c_str(), &sb) == 0 && ((sb.st_mode & S_IFMT) == S_IFREG);
 }
 
 
-static inline std::string sysfs_prefix(const PciTopology &topology)
+static inline bool sysfs_is_amdgpu(const std::string &path)
 {
-    std::string path = kPrefix + "0000:" + topology.toString().data() + "/hwmon/hwmon";
-
-    if (sysfs_is_file((path + "2/name").c_str())) {
-        return path + "2/";
+    if (!sysfs_is_file(path)) {
+        return false;
     }
 
-    if (sysfs_is_file((path + "3/name").c_str())) {
-        return path + "3/";
+    std::ifstream file(path);
+    if (!file.is_open()) {
+        return false;
     }
 
-    return {};
+    std::string name;
+    std::getline(file, name);
+
+    return name == "amdgpu";
 }
 
 
@@ -74,6 +76,21 @@ uint32_t sysfs_read(const std::string &path)
 }
 
 
+static inline std::string sysfs_prefix(const PciTopology &topology)
+{
+    const std::string path = kPrefix + "0000:" + topology.toString().data() + "/hwmon/hwmon";
+
+    for (uint32_t i = 1; i < 10; ++i) {
+        const std::string prefix = path + std::to_string(i) + "/";
+        if (sysfs_is_amdgpu(prefix + "name") && sysfs_read(prefix + "freq1_input")) {
+            return prefix;
+        }
+    }
+
+    return {};
+}
+
+
 } // namespace xmrig