Unstable: See below.

These changes are related to the current ticket regarding AHCI support.
This commit is just to upstream changes from local.

Signed-off-by: Amlal El Mahrouss <amlal@el-mahrouss-logic.com>

1 files changed, 109 insertions, 0 deletions

diff --git a/Private/Builtins/PS2/PS2MouseInterface.hxx b/Private/Builtins/PS2/PS2MouseInterface.hxx
new file mode 100644
index 00000000..682151e9
--- /dev/null
+++ b/Private/Builtins/PS2/PS2MouseInterface.hxx
@@ -0,0 +1,109 @@
+/* -------------------------------------------
+
+    Copyright Mahrouss Logic
+
+    File: PS2MouseInterface.hxx
+    Purpose: PS/2 mouse.
+
+    Revision History:
+
+    03/02/24: Added file (amlel)
+
+------------------------------------------- */
+
+#pragma once
+
+#include <ArchKit/ArchKit.hpp>
+#include <CompilerKit/CompilerKit.hxx>
+#include <NewKit/Defines.hpp>
+
+namespace HCore {
+/// @brief PS/2 Mouse driver interface
+class PS2MouseInterface final {
+ public:
+  explicit PS2MouseInterface() = default;
+  ~PS2MouseInterface() = default;
+
+  HCORE_COPY_DEFAULT(PS2MouseInterface);
+
+ public:
+  Void Init() noexcept {
+    HCore::kcout << "HCoreKrnl.exe: Enabling PS/2 mouse...\r\n";
+
+    this->Write(0xFF);
+
+    HAL::Out8(0x64, 0xA8);
+
+    this->Wait();
+
+    HAL::Out8(0x64, 0x20);
+
+    this->WaitInput();
+
+    UInt8 dataStatus = HAL::In8(0x60);
+
+    dataStatus |= 0b10;
+
+    this->Wait();
+
+    HAL::Out8(0x60, dataStatus);
+
+    this->Write(0xF6);
+    auto f6Dat = this->Read();
+
+    this->Write(0xF4);
+    auto f4Dat = this->Read();
+
+    HCore::kcout << "HCoreKrnl.exe: PS/2 mouse is OK: " << hex_number(f6Dat);
+    HCore::kcout << ", " << hex_number(f4Dat) << end_line();
+  }
+
+  private:
+  Bool WaitInput() noexcept {
+    UInt64 timeout = 100000;
+
+    while (timeout) {
+      if ((HAL::In8(0x64) & 0x1)) {
+        HCore::kcout << "HCoreKrnl.exe: Wait: OK\r\n";
+        return true;
+      }
+
+      --timeout;
+    }  // wait until we can read
+
+    HCore::kcout << "HCoreKrnl.exe: Wait: Timeout\r\n";
+    // return the ack bit.
+    return false;
+  }
+
+  Bool Wait() noexcept {
+    UInt64 timeout = 100000;
+
+    while (timeout) {
+      if ((HAL::In8(0x64) & 0b10) == 0) {
+        HCore::kcout << "HCoreKrnl.exe: Wait: OK\r\n";
+        return true;
+      }
+
+      --timeout;
+    }  // wait until we can read
+
+    HCore::kcout << "HCoreKrnl.exe: Wait: Timeout\r\n";
+    // return the ack bit.
+    return false;
+  }
+
+  Void Write(UInt8 val) {
+    this->Wait();
+    HAL::Out8(0x64, 0xD4);
+    this->Wait();
+
+    HAL::Out8(0x60, val);
+  }
+
+  UInt8 Read() {
+    this->WaitInput();
+    return HAL::In8(0x60);
+  }
+};
+}  // namespace HCore