Config support for multi-GPU setups

daemon/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 
 [dependencies]
 bincode = "1.3"
-serde = { version = "1.0", features = ["derive"] }
+serde = { version = "1.0", features = ["derive", "rc"] }
 serde_json = "1.0"
 vulkano = "0.19"
 log = "0.4"

daemon/src/config.rs

@@ -1,5 +1,5 @@
 use serde::{Deserialize, Serialize};
-use std::{collections::BTreeMap, fs, io, path::PathBuf};
+use std::{collections::{BTreeMap, HashMap}, fs, io, path::PathBuf};
 
 #[derive(Debug)]
 pub enum ConfigError {
@@ -19,13 +19,27 @@ impl From<serde_json::Error> for ConfigError {
     }
 }
 
+#[derive(Deserialize, Serialize, Debug, Clone, Hash, Eq)]
+pub struct GpuIdentifier {
+    pub pci_id: String,
+    pub card_model: String,
+    pub gpu_model: String,
+    pub path: PathBuf,
+}
+
+impl PartialEq for GpuIdentifier {
+    fn eq(&self, other: &Self) -> bool {
+        self.pci_id == other.pci_id && self.gpu_model == other.gpu_model && self.card_model == other.card_model
+    }
+}
+
 #[derive(Serialize, Deserialize, Clone, Debug)]
-pub struct Config {
+pub struct GpuConfig {
     pub fan_control_enabled: bool,
     pub fan_curve: BTreeMap<i32, f64>,
 }
 
-impl Config {
+impl GpuConfig {
     pub fn new() -> Self {
         let mut fan_curve: BTreeMap<i32, f64> = BTreeMap::new();
         fan_curve.insert(20, 0f64);
@@ -34,11 +48,28 @@ impl Config {
         fan_curve.insert(80, 80f64);
         fan_curve.insert(100, 100f64);
 
-        Config {
+        GpuConfig {
             fan_curve,
             fan_control_enabled: false,
         }
     }
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct Config {
+    pub gpu_configs: HashMap<u32, (GpuIdentifier, GpuConfig)>,
+    pub config_path: PathBuf,
+}
+
+impl Config {
+    pub fn new(config_path: &PathBuf) -> Self {
+        let gpu_configs: HashMap<u32, (GpuIdentifier, GpuConfig)> = HashMap::new();
+
+        Config {
+            gpu_configs,
+            config_path: config_path.clone(),
+        }
+    }
 
     pub fn read_from_file(path: &PathBuf) -> Result<Self, ConfigError> {
         let json = fs::read_to_string(path)?;
@@ -46,10 +77,11 @@ impl Config {
         Ok(serde_json::from_str::<Config>(&json)?)
     }
 
-    pub fn save(&self, path: &PathBuf) -> Result<(), ConfigError> {
+    pub fn save(&self) -> Result<(), ConfigError> {
         let json = serde_json::json!(self);
+        log::info!("saving {}", json.to_string());
 
-        Ok(fs::write(path, &json.to_string())?)
+        Ok(fs::write(&self.config_path, &json.to_string())?)
     }
 }
 

daemon/src/gpu_controller.rs

@@ -1,4 +1,4 @@
-use crate::config::Config;
+use crate::config::{Config, GpuConfig, GpuIdentifier};
 use crate::hw_mon::{HWMon, HWMonError};
 use serde::{Deserialize, Serialize};
 use std::path::{Path, PathBuf};
@@ -24,13 +24,12 @@ pub struct FanControlInfo {
     pub curve: BTreeMap<i32, f64>,
 }
 
-#[derive(Clone)]
+#[derive(Deserialize, Serialize)]
 pub struct GpuController {
-    hw_path: PathBuf,
+    pub hw_path: PathBuf,
     hw_mon: Option<HWMon>,
     pub gpu_info: GpuInfo,
-    config: Config,
+    config: GpuConfig,
-    config_path: PathBuf,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone, Default)]
@@ -54,10 +53,11 @@ pub struct GpuInfo {
     pub link_speed: String,
     pub link_width: u8,
     pub vulkan_info: VulkanInfo,
+    pub pci_slot: String,
 }
 
 impl GpuController {
-    pub fn new(hw_path: PathBuf, config: Config, config_path: PathBuf) -> Self {
+    pub fn new(hw_path: PathBuf, config: GpuConfig) -> Self {
         let hw_mon = match fs::read_dir(&hw_path.join("hwmon")) {
             Ok(mut path) => {
                 let path = path.next().unwrap().unwrap().path();
@@ -71,19 +71,45 @@ impl GpuController {
             _ => None,
         };
 
-
         let mut controller = GpuController {
             hw_path: hw_path.clone(),
             hw_mon,
             gpu_info: Default::default(),
             config,
-            config_path,
         };
         controller.gpu_info = controller.get_info();
         log::trace!("{:?}", controller.gpu_info);
         controller
     }
 
+    pub fn load_config(&mut self, config: GpuConfig) {
+        self.hw_mon = match fs::read_dir(self.hw_path.join("hwmon")) {
+            Ok(mut path) => {
+                let path = path.next().unwrap().unwrap().path();
+                let hw_mon = HWMon::new(
+                    &path,
+                    config.fan_control_enabled,
+                    config.fan_curve.clone(),
+                );
+                Some(hw_mon)
+            },
+            _ => None,
+        };
+
+    }
+
+    pub fn get_config(&self) -> GpuConfig {
+        self.config.clone()
+    }
+
+    pub fn get_identifier(&self) -> GpuIdentifier {
+        GpuIdentifier { pci_id: self.gpu_info.pci_slot.clone(),
+                        card_model: self.gpu_info.card_model.clone(),
+                        gpu_model: self.gpu_info.gpu_model.clone(), 
+                        path: self.hw_path.clone() }
+
+    }
+
     fn get_info(&self) -> GpuInfo {
         let uevent =
             fs::read_to_string(self.hw_path.join("uevent")).expect("Failed to read uevent");
@@ -93,6 +119,7 @@ impl GpuController {
         let mut model_id = String::new();
         let mut card_vendor_id = String::new();
         let mut card_model_id = String::new();
+        let mut pci_slot = String::new();
 
         for line in uevent.split('\n') {
             let split = line.split('=').collect::<Vec<&str>>();
@@ -102,12 +129,13 @@ impl GpuController {
                     let ids = split.last().expect("failed to get split").split(':').collect::<Vec<&str>>();
                     vendor_id = ids.get(0).unwrap().to_string();
                     model_id = ids.get(0).unwrap().to_string();
-                }
+                },
                 &"PCI_SUBSYS_ID" => {
                     let ids = split.last().expect("failed to get split").split(':').collect::<Vec<&str>>();
                     card_vendor_id = ids.get(0).unwrap().to_string();
                     card_model_id = ids.get(1).unwrap().to_string();
-                }
+                },
+                &"PCI_SLOT_NAME" => pci_slot = split.get(1).unwrap().to_string(),
                 _ => (),
             }
         }
@@ -194,6 +222,7 @@ impl GpuController {
             link_speed,
             link_width,
             vulkan_info,
+            pci_slot,
         }
     }
 
@@ -233,9 +262,6 @@ impl GpuController {
                 match hw_mon.start_fan_control() {
                     Ok(_) => {
                         self.config.fan_control_enabled = true;
-                        self.config
-                            .save(&self.config_path)
-                            .expect("Failed to save config");
                         Ok(())
                     }
                     Err(e) => Err(e),
@@ -251,9 +277,6 @@ impl GpuController {
                 match hw_mon.stop_fan_control() {
                     Ok(_) => {
                         self.config.fan_control_enabled = false;
-                        self.config
-                            .save(&self.config_path)
-                            .expect("Failed to save config");
                         Ok(())
                     }
                     Err(e) => Err(e),
@@ -282,9 +305,6 @@ impl GpuController {
             Some(hw_mon) => {
                 hw_mon.set_fan_curve(curve.clone());
                 self.config.fan_curve = curve;
-                self.config
-                    .save(&self.config_path)
-                    .expect("Failed to save config");
                 Ok(())
             },
             None => Err(HWMonError::NoHWMon),

daemon/src/hw_mon.rs

@@ -18,7 +18,7 @@ pub enum HWMonError {
     NoHWMon,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct HWMon {
     hwmon_path: PathBuf,
     pub fan_max_speed: i32,

daemon/src/lib.rs

@@ -3,7 +3,7 @@ pub mod daemon_connection;
 pub mod gpu_controller;
 pub mod hw_mon;
 
-use config::Config;
+use config::{Config, GpuConfig, GpuIdentifier};
 use serde::{Deserialize, Serialize};
 use std::{collections::{BTreeMap, HashMap}, fs};
 use std::os::unix::net::{UnixListener, UnixStream};
@@ -22,6 +22,7 @@ pub const SOCK_PATH: &str = "/tmp/amdgpu-configurator.sock";
 pub struct Daemon {
     gpu_controllers: HashMap<u32, GpuController>,
     listener: UnixListener,
+    config: Config,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -38,7 +39,7 @@ pub enum Action {
 }
 
 impl Daemon {
-    pub fn new(unpriveleged: bool) -> Daemon {
+    pub fn new(unprivileged: bool) -> Daemon {
         if fs::metadata(SOCK_PATH).is_ok() {
             fs::remove_file(SOCK_PATH).expect("Failed to take control over socket");
         }
@@ -52,14 +53,14 @@ impl Daemon {
             .expect("Failed to chmod");
 
         let config_path = PathBuf::from("/etc/lact.json");
-        let config = if unpriveleged {
+        let mut config = if unprivileged {
-            Config::new()
+            Config::new(&config_path)
         } else {
             match Config::read_from_file(&config_path) {
                 Ok(c) => c,
                 Err(_) => {
-                    let c = Config::new();
+                    let c = Config::new(&config_path);
-                    c.save(&config_path).expect("Failed to save config");
+                    //c.save().unwrap();
                     c
                 }
             }
@@ -69,35 +70,58 @@ impl Daemon {
 
         let mut gpu_controllers: HashMap<u32, GpuController> = HashMap::new();
 
-        for entry in fs::read_dir("/sys/class/drm").expect("Could not open /sys/class/drm") {
+        /*for (gpu_identifier, gpu_config) in &config.gpu_configs {
+            let mut controller = GpuController::new(gpu_identifier.path.clone(), GpuConfig::new());
+            if controller.gpu_info.pci_slot == gpu_identifier.pci_id && controller.gpu_info.card_model == gpu_identifier.card_model && controller.gpu_info.gpu_model == gpu_identifier.gpu_model {
+                controller.load_config(gpu_config.clone());
+                gpu_controllers.insert(gpu_identifier.id, controller);
+            }
+        }*/
+
+        'entries: for entry in fs::read_dir("/sys/class/drm").expect("Could not open /sys/class/drm") {
             let entry = entry.unwrap();
             if entry.file_name().len() == 5 {
                 if entry.file_name().to_str().unwrap().split_at(4).0 == "card" {
                     log::info!("Initializing {:?}", entry.path());
-                    loop {
+
+                    let mut controller = GpuController::new(entry.path().join("device"), GpuConfig::new());
+
+                        for (id, (gpu_identifier, gpu_config)) in &config.gpu_configs {
+                        if controller.gpu_info.pci_slot == gpu_identifier.pci_id && controller.gpu_info.card_model == gpu_identifier.card_model && controller.gpu_info.gpu_model == gpu_identifier.gpu_model {
+                            controller.load_config(gpu_config.clone());
+                            gpu_controllers.insert(id.clone(), controller);
+                            log::info!("already known");
+                            continue 'entries;
+                        }
+                    }
+
+                    log::info!("initializing for the first time");
+
                     let id: u32 = random();
-                        if !gpu_controllers.contains_key(&id) {
+
-                            gpu_controllers.insert(id, GpuController::new(entry.path().join("device"), config.clone(), config_path.clone()));
+                    config.gpu_configs.insert(id, (controller.get_identifier(), controller.get_config()));
-                            break;
+                    gpu_controllers.insert(id, controller);
-                        }
-                    }
                 }
             }
         }
+        config.save().unwrap();
 
         Daemon {
             listener,
             gpu_controllers,
+            config,
         }
     }
 
     pub fn listen(mut self) {
-        for stream in self.listener.incoming() {
+        let listener = self.listener.try_clone().expect("couldn't try_clone");
+        for stream in listener.incoming() {
             match stream {
                 Ok(stream) => {
                     //let mut controller = self.gpu_controller.clone();
                     //thread::spawn(move || Daemon::handle_connection(&mut controller, stream));
-                    Daemon::handle_connection(&mut self.gpu_controllers, stream);
+                    //Daemon::handle_connection(&mut self.gpu_controllers, stream);
+                    Daemon::handle_connection(&mut self, stream);
                 }
                 Err(err) => {
                     log::error!("Error: {}", err);
@@ -107,7 +131,8 @@ impl Daemon {
         }
     }
 
-    fn handle_connection(gpu_controllers: &mut HashMap<u32, GpuController>, mut stream: UnixStream) {
+    //fn handle_connection(gpu_controllers: &mut HashMap<u32, GpuController>, mut stream: UnixStream) {
+    fn handle_connection(&mut self, mut stream: UnixStream) {
         log::trace!("Reading buffer");
         let mut buffer = Vec::<u8>::new();
         stream.read_to_end(&mut buffer).unwrap();
@@ -122,48 +147,60 @@ impl Daemon {
                     Action::CheckAlive => Ok(DaemonResponse::OK),
                     Action::GetGpus => {
                         let mut gpus: HashMap<u32, String> = HashMap::new();
-                        for controller in gpu_controllers {
+                        for controller in &self.gpu_controllers {
                             gpus.insert(*controller.0, controller.1.gpu_info.gpu_model.clone());
                         }
                         Ok(DaemonResponse::Gpus(gpus))
                     },
-                    Action::GetStats(i) => match gpu_controllers.get(&i) {
+                    Action::GetStats(i) => match self.gpu_controllers.get(&i) {
                         Some(controller) => Ok(DaemonResponse::GpuStats(controller.get_stats())),
                         None => Err(DaemonError::InvalidID),
                     },
-                    Action::GetInfo(i) => match gpu_controllers.get(&i) {
+                    Action::GetInfo(i) => match self.gpu_controllers.get(&i) {
                         Some(controller) => Ok(DaemonResponse::GpuInfo(controller.gpu_info.clone())),
                         None => Err(DaemonError::InvalidID),
                     },
-                    Action::StartFanControl(i) => match gpu_controllers.get_mut(&i) {
+                    Action::StartFanControl(i) => match self.gpu_controllers.get_mut(&i) {
                         Some(controller) => match controller.start_fan_control() {
-                            Ok(_) => Ok(DaemonResponse::OK),
+                            Ok(_) => {
+                                self.config.gpu_configs.insert(i, (controller.get_identifier(), controller.get_config()));
+                                self.config.save().unwrap();
+                                Ok(DaemonResponse::OK)
+                            },
                             Err(_) => Err(DaemonError::HWMonError),
                         }
                         None => Err(DaemonError::InvalidID),
                     },
-                    Action::StopFanControl(i) => match gpu_controllers.get_mut(&i) {
+                    Action::StopFanControl(i) => match self.gpu_controllers.get_mut(&i) {
                         Some(controller) => match controller.stop_fan_control() {
-                            Ok(_) => Ok(DaemonResponse::OK),
+                            Ok(_) => {
+                                self.config.gpu_configs.insert(i, (controller.get_identifier(), controller.get_config()));
+                                self.config.save().unwrap();
+                                Ok(DaemonResponse::OK)
+                            },
                             Err(_) => Err(DaemonError::HWMonError),
                         },
                         None => Err(DaemonError::InvalidID),
                     },
-                    Action::GetFanControl(i) => match gpu_controllers.get(&i) {
+                    Action::GetFanControl(i) => match self.gpu_controllers.get(&i) {
                         Some(controller) => match controller.get_fan_control() {
                             Ok(info) => Ok(DaemonResponse::FanControlInfo(info)),
                             Err(_) => Err(DaemonError::HWMonError),
                         }
                         None => Err(DaemonError::InvalidID),
                     }
-                    Action::SetFanCurve(i, curve) => match gpu_controllers.get_mut(&i) {
+                    Action::SetFanCurve(i, curve) => match self.gpu_controllers.get_mut(&i) {
                         Some(controller) => {
 
                             let mut buffer = Vec::new();
                             stream.read_to_end(&mut buffer).unwrap();
                             
                             match controller.set_fan_curve(curve) {
-                                Ok(_) => Ok(DaemonResponse::OK),
+                                Ok(_) => {
+                                    self.config.gpu_configs.insert(i, (controller.get_identifier(), controller.get_config()));
+                                    self.config.save().unwrap();
+                                    Ok(DaemonResponse::OK)
+                                },
                                 Err(_) => Err(DaemonError::HWMonError),
                             }