Adding command buffer and test command

src/mips/psyqo/cdrom-commandbuffer.hh

@@ -0,0 +1,58 @@
+/*
+
+MIT License
+
+Copyright (c) 2025 PCSX-Redux authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in 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:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+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
+AUTHORS 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 IN THE
+SOFTWARE.
+
+*/
+
+#pragma once
+
+#include <stdint.h>
+
+#include <concepts>
+#include <type_traits>
+
+namespace psyqo::Hardware::CDRom {
+
+template <typename T>
+concept CDRomArgumentType = std::is_integral<T>::value;
+
+struct CDRomCommandBuffer {
+    template <CDRomArgumentType... T>
+    void set(T... values) {
+        size = sizeof...(values);
+        recursiveSet(0, values...);
+    }
+
+    uint8_t buffer[16];
+    uint8_t size = 0;
+
+  private:
+    void recursiveSet(uint8_t pos, uint8_t arg) { buffer[pos] = arg; }
+
+    template <CDRomArgumentType... T>
+    void recursiveSet(uint8_t pos, uint8_t arg, T... args) {
+        buffer[pos] = arg;
+        recursiveSet(pos + 1, args...);
+    }
+};
+} // namespace psyqo::Hardware::CDRom

src/mips/psyqo/cdrom-device.hh

@@ -35,6 +35,7 @@ SOFTWARE.
 #include <cstdint>
 #include <type_traits>
 
+#include "psyqo/cdrom-commandbuffer.hh"
 #include "psyqo/cdrom.hh"
 #include "psyqo/msf.hh"
 #include "psyqo/task.hh"
@@ -412,6 +413,15 @@ class CDRomDevice final : public CDRom {
      */
     void setVolume(uint8_t leftToLeft, uint8_t rightToLeft, uint8_t leftToRight, uint8_t rightToRight);
 
+    /**
+     * @brief Sends a test command to the CDRom mech
+     *
+     * @param callback The callback to call when the command operation is complete.
+     */
+    void test(const psyqo::Hardware::CDRom::CDRomCommandBuffer &commandBuffer, eastl::function<void(bool)> &&callback);
+    TaskQueue::Task scheduleTest(const psyqo::Hardware::CDRom::CDRomCommandBuffer &commandBuffer);
+    void testBlocking(GPU &, const psyqo::Hardware::CDRom::CDRomCommandBuffer &commandBuffer);
+
     /**
      * @brief The action base class for the internal state machine.
      *

src/mips/psyqo/hardware/cdrom.hh

@@ -26,6 +26,12 @@ SOFTWARE.
 
 #pragma once
 
+#include <stdint.h>
+
+#include <concepts>
+#include <type_traits>
+
+#include "psyqo/cdrom-commandbuffer.hh"
 #include "psyqo/hardware/hwregs.hh"
 
 namespace psyqo::Hardware::CDRom {
@@ -78,6 +84,13 @@ struct Access {
 };
 
 struct CommandFifo {
+    void send(CDL cmd, const CDRomCommandBuffer& commandBuffer) {
+        Ctrl = 0;
+        for (unsigned i = 0; i < commandBuffer.size; i++) {
+            Fifo = commandBuffer.buffer[i];
+        }
+        Response = static_cast<uint8_t>(cmd);
+    }
     void send(CDL cmd) {
         Ctrl = 0;
         Response = static_cast<uint8_t>(cmd);

src/mips/psyqo/src/cdrom-device-test.cpp

@@ -0,0 +1,95 @@
+/*
+
+MIT License
+
+Copyright (c) 2025 PCSX-Redux authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in 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:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+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
+AUTHORS 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 IN THE
+SOFTWARE.
+
+*/
+
+#include "psyqo/cdrom-device.hh"
+
+#include <EASTL/atomic.h>
+
+#include "psyqo/cdrom-commandbuffer.hh"
+#include "psyqo/hardware/cdrom.hh"
+#include "psyqo/kernel.hh"
+
+namespace {
+
+enum class TestActionState : uint8_t {
+    IDLE,
+    TEST,
+};
+
+class TestAction : public psyqo::CDRomDevice::Action<TestActionState> {
+  public:
+    TestAction() : Action("TestAction") {}
+
+    void start(psyqo::CDRomDevice *device, const psyqo::Hardware::CDRom::CDRomCommandBuffer &commandBuffer,
+               eastl::function<void(bool)> &&callback) {
+        psyqo::Kernel::assert(device->isIdle(), "CDRomDevice::test() called while another action is in progress");
+        registerMe(device);
+        setCallback(eastl::move(callback));
+        setState(TestActionState::TEST);
+        eastl::atomic_signal_fence(eastl::memory_order_release);
+        psyqo::Hardware::CDRom::Command.send(psyqo::Hardware::CDRom::CDL::TEST, commandBuffer);
+    }
+    void start(psyqo::CDRomDevice *device, eastl::function<void(bool)> &&callback) {
+        start(device, m_commandBuffer, eastl::move(callback));
+    }
+    bool complete(const psyqo::CDRomDevice::Response &) override {
+        setSuccess(true);
+        return true;
+    }
+    bool acknowledge(const psyqo::CDRomDevice::Response &response) override {
+        setSuccess(true);
+        return true;
+    }
+
+    psyqo::Hardware::CDRom::CDRomCommandBuffer m_commandBuffer;
+};
+
+TestAction s_testAction;
+
+}  // namespace
+
+void psyqo::CDRomDevice::test(const psyqo::Hardware::CDRom::CDRomCommandBuffer &commandBuffer,
+                              eastl::function<void(bool)> &&callback) {
+    Kernel::assert(m_callback == nullptr, "CDRomDevice::test called with pending action");
+    s_testAction.start(this, commandBuffer, eastl::move(callback));
+}
+
+psyqo::TaskQueue::Task psyqo::CDRomDevice::scheduleTest(
+    const psyqo::Hardware::CDRom::CDRomCommandBuffer &commandBuffer) {
+    s_testAction.m_commandBuffer = commandBuffer;
+
+    return TaskQueue::Task(
+        [this](auto task) { s_testAction.start(this, [task](bool success) { task->complete(success); }); });
+}
+
+void psyqo::CDRomDevice::testBlocking(GPU &gpu, const psyqo::Hardware::CDRom::CDRomCommandBuffer &commandBuffer) {
+    Kernel::assert(m_callback == nullptr, "CDRomDevice::testBlocking called with pending action");
+    bool success = false;
+    {
+        BlockingAction blocking(this, gpu);
+        s_testAction.start(this, commandBuffer, [&success](bool success_) { success = success_; });
+    }
+}