From 9e7fba5959bc91ad549809551c99756e34f245db Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Wed, 11 Oct 2023 20:16:55 +0200
Subject: x86_64: vga: implement basic cursor configuration

---
 source/arch/x86_64/include/arch/video/vga/io.hpp   | 27 ++++++++++++++++++++++
 source/arch/x86_64/include/arch/video/vga/text.hpp | 13 ++++++++---
 2 files changed, 37 insertions(+), 3 deletions(-)
 create mode 100644 source/arch/x86_64/include/arch/video/vga/io.hpp

(limited to 'source/arch/x86_64/include')

diff --git a/source/arch/x86_64/include/arch/video/vga/io.hpp b/source/arch/x86_64/include/arch/video/vga/io.hpp
new file mode 100644
index 0000000..af77998
--- /dev/null
+++ b/source/arch/x86_64/include/arch/video/vga/io.hpp
@@ -0,0 +1,27 @@
+#ifndef TEACHOS_ARCH_X86_64_VIDEO_VGA_IO_HPP
+#define TEACHOS_ARCH_X86_64_VIDEO_VGA_IO_HPP
+
+#include "arch/io/port_io.hpp"
+
+#include <cstddef>
+
+namespace teachos::arch::video::vga
+{
+
+  namespace crtc
+  {
+
+    using address_port = arch::io::port<0x3d4, 1>;
+    using data_port = arch::io::port<0x3d5, 1>;
+
+    namespace registers
+    {
+      [[maybe_unused]] auto constexpr cursor_start = std::byte{0x0a};
+      [[maybe_unused]] auto constexpr curser_end = std::byte{0x0b};
+    }  // namespace registers
+
+  };  // namespace crtc
+
+}  // namespace teachos::arch::video::vga
+
+#endif
\ No newline at end of file
diff --git a/source/arch/x86_64/include/arch/video/vga/text.hpp b/source/arch/x86_64/include/arch/video/vga/text.hpp
index c8ff162..e615eba 100644
--- a/source/arch/x86_64/include/arch/video/vga/text.hpp
+++ b/source/arch/x86_64/include/arch/video/vga/text.hpp
@@ -77,16 +77,23 @@ namespace teachos::arch::video::vga::text
    * @brief Clear the VGA text mode buffer.
    *
    * @note This function also resets the text mode buffer pointer.
-   * 
+   *
    * @param attribute The attribute to "clear" the screen with.
    */
   auto clear(attribute attribute = common_attributes::gray_on_black) -> void;
 
+  /**
+   * @brief Enable or disable the VGA text mode cursor.
+   *
+   * @param enabled Whether or not to enable the cursors.
+   */
+  auto cursor(bool enabled) -> void;
+
   /**
    * @brief Write a string of code points to the VGA text buffer.
-   * 
+   *
    * @note This function also updates the text mode buffer pointer.
-   * 
+   *
    * @param code_points A string of (8-bit) code points to write to the VGA text mode buffer.
    * @param attribute The attribute to apply to the written sequence of code points.
    * @see vga::text::attribute
-- 
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