NVDRV: Implement QueryEvent.

src/core/hle/service/nvdrv/devices/nvdevice.h

@@ -11,6 +11,10 @@ namespace Core {
 class System;
 }
 
+namespace Kernel {
+class KEvent;
+}
+
 namespace Service::Nvidia::Devices {
 
 /// Represents an abstract nvidia device node. It is to be subclassed by concrete device nodes to
@@ -64,6 +68,10 @@ public:
      */
     virtual void OnClose(DeviceFD fd) = 0;
 
+    virtual Kernel::KEvent* QueryEvent(u32 event_id) {
+        return nullptr;
+    }
+
 protected:
     Core::System& system;
 };

src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp

@@ -255,4 +255,27 @@ NvResult nvhost_ctrl::IocCtrlClearEventWait(const std::vector<u8>& input, std::v
     return NvResult::Success;
 }
 
+Kernel::KEvent* nvhost_ctrl::QueryEvent(u32 event_id) {
+    const auto event = SyncpointEventValue{.raw = event_id};
+
+    const bool allocated = event.event_allocated.Value() != 0;
+    const u32 slot{allocated ? event.partial_slot.Value() : static_cast<u32>(event.slot)};
+    if (slot >= MaxNvEvents) {
+        ASSERT(false);
+        return nullptr;
+    }
+
+    const u32 syncpoint_id{allocated ? event.syncpoint_id_for_allocation.Value()
+                                     : event.syncpoint_id.Value()};
+
+    auto lock = events_interface.Lock();
+
+    if (events_interface.registered[slot] &&
+        events_interface.assigned_syncpt[slot] == syncpoint_id) {
+        ASSERT(events_interface.events[slot]);
+        return events_interface.events[slot];
+    }
+    return nullptr;
+}
+
 } // namespace Service::Nvidia::Devices

src/core/hle/service/nvdrv/devices/nvhost_ctrl.h

@@ -28,6 +28,8 @@ public:
     void OnOpen(DeviceFD fd) override;
     void OnClose(DeviceFD fd) override;
 
+    Kernel::KEvent* QueryEvent(u32 event_id) override;
+
     union SyncpointEventValue {
         u32 raw;
 

src/core/hle/service/nvdrv/devices/nvhost_ctrl_gpu.cpp

@@ -7,10 +7,15 @@
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/hle/service/nvdrv/devices/nvhost_ctrl_gpu.h"
+#include "core/hle/service/nvdrv/nvdrv.h"
 
 namespace Service::Nvidia::Devices {
 
-nvhost_ctrl_gpu::nvhost_ctrl_gpu(Core::System& system_) : nvdevice{system_} {}
+nvhost_ctrl_gpu::nvhost_ctrl_gpu(Core::System& system_, EventInterface& events_interface_)
+    : nvdevice{system_}, events_interface{events_interface_} {
+    error_notifier_event = events_interface.CreateNonCtrlEvent("CtrlGpuErrorNotifier");
+    unknown_event = events_interface.CreateNonCtrlEvent("CtrlGpuUknownEvent");
+}
 nvhost_ctrl_gpu::~nvhost_ctrl_gpu() = default;
 
 NvResult nvhost_ctrl_gpu::Ioctl1(DeviceFD fd, Ioctl command, const std::vector<u8>& input,
@@ -286,4 +291,17 @@ NvResult nvhost_ctrl_gpu::GetGpuTime(const std::vector<u8>& input, std::vector<u
     return NvResult::Success;
 }
 
+Kernel::KEvent* nvhost_ctrl_gpu::QueryEvent(u32 event_id) {
+    switch (event_id) {
+    case 1:
+        return error_notifier_event;
+    case 2:
+        return unknown_event;
+    default: {
+        LOG_CRITICAL(Service_NVDRV, "Unknown Ctrl GPU Event {}", event_id);
+    }
+    }
+    return nullptr;
+}
+
 } // namespace Service::Nvidia::Devices

src/core/hle/service/nvdrv/devices/nvhost_ctrl_gpu.h

@@ -10,11 +10,15 @@
 #include "common/swap.h"
 #include "core/hle/service/nvdrv/devices/nvdevice.h"
 
+namespace Service::Nvidia {
+class EventInterface;
+}
+
 namespace Service::Nvidia::Devices {
 
 class nvhost_ctrl_gpu final : public nvdevice {
 public:
-    explicit nvhost_ctrl_gpu(Core::System& system_);
+    explicit nvhost_ctrl_gpu(Core::System& system_, EventInterface& events_interface_);
     ~nvhost_ctrl_gpu() override;
 
     NvResult Ioctl1(DeviceFD fd, Ioctl command, const std::vector<u8>& input,
@@ -27,6 +31,8 @@ public:
     void OnOpen(DeviceFD fd) override;
     void OnClose(DeviceFD fd) override;
 
+    Kernel::KEvent* QueryEvent(u32 event_id) override;
+
 private:
     struct IoctlGpuCharacteristics {
         u32_le arch;                       // 0x120 (NVGPU_GPU_ARCH_GM200)
@@ -160,6 +166,12 @@ private:
     NvResult ZBCQueryTable(const std::vector<u8>& input, std::vector<u8>& output);
     NvResult FlushL2(const std::vector<u8>& input, std::vector<u8>& output);
     NvResult GetGpuTime(const std::vector<u8>& input, std::vector<u8>& output);
+
+    EventInterface& events_interface;
+
+    // Events
+    Kernel::KEvent* error_notifier_event;
+    Kernel::KEvent* unknown_event;
 };
 
 } // namespace Service::Nvidia::Devices

src/core/hle/service/nvdrv/devices/nvhost_gpu.cpp

@@ -6,6 +6,7 @@
 #include "common/logging/log.h"
 #include "core/core.h"
 #include "core/hle/service/nvdrv/devices/nvhost_gpu.h"
+#include "core/hle/service/nvdrv/nvdrv.h"
 #include "core/hle/service/nvdrv/syncpoint_manager.h"
 #include "core/memory.h"
 #include "video_core/gpu.h"
@@ -21,10 +22,16 @@ Tegra::CommandHeader BuildFenceAction(Tegra::GPU::FenceOperation op, u32 syncpoi
 } // namespace
 
 nvhost_gpu::nvhost_gpu(Core::System& system_, std::shared_ptr<nvmap> nvmap_dev_,
-                       SyncpointManager& syncpoint_manager_)
-    : nvdevice{system_}, nvmap_dev{std::move(nvmap_dev_)}, syncpoint_manager{syncpoint_manager_} {
+                       EventInterface& events_interface_, SyncpointManager& syncpoint_manager_)
+    : nvdevice{system_}, nvmap_dev{std::move(nvmap_dev_)}, events_interface{events_interface_},
+      syncpoint_manager{syncpoint_manager_} {
     channel_fence.id = syncpoint_manager_.AllocateSyncpoint();
     channel_fence.value = system_.GPU().GetSyncpointValue(channel_fence.id);
+    sm_exception_breakpoint_int_report_event =
+        events_interface.CreateNonCtrlEvent("GpuChannelSMExceptionBreakpointInt");
+    sm_exception_breakpoint_pause_report_event =
+        events_interface.CreateNonCtrlEvent("GpuChannelSMExceptionBreakpointPause");
+    error_notifier_event = events_interface.CreateNonCtrlEvent("GpuChannelErrorNotifier");
 }
 
 nvhost_gpu::~nvhost_gpu() = default;
@@ -328,4 +335,19 @@ NvResult nvhost_gpu::ChannelSetTimeslice(const std::vector<u8>& input, std::vect
     return NvResult::Success;
 }
 
+Kernel::KEvent* nvhost_gpu::QueryEvent(u32 event_id) {
+    switch (event_id) {
+    case 1:
+        return sm_exception_breakpoint_int_report_event;
+    case 2:
+        return sm_exception_breakpoint_pause_report_event;
+    case 3:
+        return error_notifier_event;
+    default: {
+        LOG_CRITICAL(Service_NVDRV, "Unknown Ctrl GPU Event {}", event_id);
+    }
+    }
+    return nullptr;
+}
+
 } // namespace Service::Nvidia::Devices

src/core/hle/service/nvdrv/devices/nvhost_gpu.h

@@ -15,7 +15,8 @@
 
 namespace Service::Nvidia {
 class SyncpointManager;
-}
+class EventInterface;
+} // namespace Service::Nvidia
 
 namespace Service::Nvidia::Devices {
 
@@ -23,7 +24,7 @@ class nvmap;
 class nvhost_gpu final : public nvdevice {
 public:
     explicit nvhost_gpu(Core::System& system_, std::shared_ptr<nvmap> nvmap_dev_,
-                        SyncpointManager& syncpoint_manager_);
+                        EventInterface& events_interface_, SyncpointManager& syncpoint_manager_);
     ~nvhost_gpu() override;
 
     NvResult Ioctl1(DeviceFD fd, Ioctl command, const std::vector<u8>& input,
@@ -36,6 +37,8 @@ public:
     void OnOpen(DeviceFD fd) override;
     void OnClose(DeviceFD fd) override;
 
+    Kernel::KEvent* QueryEvent(u32 event_id) override;
+
 private:
     enum class CtxObjects : u32_le {
         Ctx2D = 0x902D,
@@ -192,8 +195,14 @@ private:
     NvResult ChannelSetTimeslice(const std::vector<u8>& input, std::vector<u8>& output);
 
     std::shared_ptr<nvmap> nvmap_dev;
+    EventInterface& events_interface;
     SyncpointManager& syncpoint_manager;
     NvFence channel_fence;
+
+    // Events
+    Kernel::KEvent* sm_exception_breakpoint_int_report_event;
+    Kernel::KEvent* sm_exception_breakpoint_pause_report_event;
+    Kernel::KEvent* error_notifier_event;
 };
 
 } // namespace Service::Nvidia::Devices