From 7a1917e0fde95b6da6a4d95111bb0462c072cd5c Mon Sep 17 00:00:00 2001
From: Subv <subv2112@gmail.com>
Date: Tue, 13 Feb 2018 23:14:11 -0500
Subject: [PATCH] nvhost-ctrl: Stub NVHOST_IOCTL_CTRL_EVENT_WAIT.

---
 src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp | 14 ++++++++++++++
 src/core/hle/service/nvdrv/devices/nvhost_ctrl.h   | 11 +++++++++++
 2 files changed, 25 insertions(+)

diff --git a/src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp b/src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp
index ee99ab280..45711d686 100644
--- a/src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp
+++ b/src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp
@@ -17,6 +17,8 @@ u32 nvhost_ctrl::ioctl(Ioctl command, const std::vector<u8>& input, std::vector<
     switch (static_cast<IoctlCommand>(command.raw)) {
     case IoctlCommand::IocGetConfigCommand:
         return NvOsGetConfigU32(input, output);
+    case IoctlCommand::IocCtrlEventWaitCommand:
+        return IocCtrlEventWait(input, output);
     }
     UNIMPLEMENTED();
     return 0;
@@ -45,6 +47,18 @@ u32 nvhost_ctrl::NvOsGetConfigU32(const std::vector<u8>& input, std::vector<u8>&
     return 0;
 }
 
+u32 nvhost_ctrl::IocCtrlEventWait(const std::vector<u8>& input, std::vector<u8>& output) {
+    IocCtrlEventWaitParams params{};
+    std::memcpy(&params, input.data(), sizeof(params));
+    LOG_WARNING(Service_NVDRV, "(STUBBED) called, syncpt_id=%u threshold=%u timeout=%d",
+                params.syncpt_id, params.threshold, params.timeout);
+
+    // TODO(Subv): Implement actual syncpt waiting.
+    params.value = 0;
+    std::memcpy(output.data(), &params, sizeof(params));
+    return 0;
+}
+
 } // namespace Devices
 } // namespace Nvidia
 } // namespace Service
diff --git a/src/core/hle/service/nvdrv/devices/nvhost_ctrl.h b/src/core/hle/service/nvdrv/devices/nvhost_ctrl.h
index fd02a5e45..0ca01aa6d 100644
--- a/src/core/hle/service/nvdrv/devices/nvhost_ctrl.h
+++ b/src/core/hle/service/nvdrv/devices/nvhost_ctrl.h
@@ -31,6 +31,7 @@ private:
         IocModuleRegRDWRCommand = 0xC008010E,
         IocSyncptWaitexCommand = 0xC0100019,
         IocSyncptReadMaxCommand = 0xC008001A,
+        IocCtrlEventWaitCommand = 0xC010001D,
         IocGetConfigCommand = 0xC183001B,
     };
 
@@ -41,7 +42,17 @@ private:
     };
     static_assert(sizeof(IocGetConfigParams) == 387, "IocGetConfigParams is incorrect size");
 
+    struct IocCtrlEventWaitParams {
+        u32_le syncpt_id;
+        u32_le threshold;
+        s32_le timeout;
+        u32_le value;
+    };
+    static_assert(sizeof(IocCtrlEventWaitParams) == 16, "IocCtrlEventWaitParams is incorrect size");
+
     u32 NvOsGetConfigU32(const std::vector<u8>& input, std::vector<u8>& output);
+
+    u32 IocCtrlEventWait(const std::vector<u8>& input, std::vector<u8>& output);
 };
 
 } // namespace Devices