kernel: Move video console code

This commit introduces a video console driver to Hyra and replaces
that weird tty.c file used only for video console logic

Signed-off-by: Ian Moffett <ian@osmora.org>

2 files changed, 108 insertions, 0 deletions

diff --git a/sys/include/dev/vcons/vcons.h b/sys/include/dev/vcons/vcons.h
new file mode 100644
index 0000000..fc59f6e
--- /dev/null
+++ b/sys/include/dev/vcons/vcons.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _DEV_VCONS_H_
+#define _DEV_VCONS_H_
+
+#include <sys/types.h>
+#include <sys/termios.h>
+#include <dev/video/fbdev.h>
+#include <sysfont.h>
+
+#define VCONS_TAB_WIDTH 4
+#define VCONS_CURSOR_WIDTH FONT_WIDTH
+#define VCONS_CURSOR_HEIGHT FONT_HEIGHT
+
+struct vcons_cursor {
+    size_t xpos, ypos;
+    uint32_t rgb;
+
+    /* Internal */
+    uint32_t old_xpos, old_ypos;
+    volatile bool is_drawing;
+    volatile bool is_drawn;     /* If it has been drawn before */
+};
+
+struct vcons_screen {
+    size_t nrows, ncols;
+    size_t cpy_x, cpy_y;    /* In chars */
+    size_t cpy_len;
+
+    uint32_t bg;
+    uint32_t fg;
+    void *fbdev_mem;
+
+    struct fbdev fbdev;
+    struct vcons_cursor cursor;
+    struct termios termios;
+};
+
+#define is_cursor_drawing(screenptr) (screenptr)->cursor.is_drawing
+
+void vcons_attach(struct vcons_screen *scr);
+int vcons_putch(struct vcons_screen *scr, char c);
+
+#endif  /* !_DEV_VCONS_H_ */
diff --git a/sys/include/dev/vcons/vcons_io.h b/sys/include/dev/vcons/vcons_io.h
new file mode 100644
index 0000000..a75d811
--- /dev/null
+++ b/sys/include/dev/vcons/vcons_io.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _VCONS_IO_H_
+#define _VCONS_IO_H_
+
+#include <dev/vcons/vcons.h>
+
+int vcons_process_output(struct vcons_screen *scr, int c);
+
+#endif  /* !_VCONS_IO_H_ */