Revert VGA C driver

1 files changed, 0 insertions, 138 deletions

diff --git a/devices/vga.cpp b/devices/vga.cpp
deleted file mode 100644
index 3f83a5f..0000000
--- a/devices/vga.cpp
+++ /dev/null
@@ -1,138 +0,0 @@
-#include "vga.hpp"
-#include <stdint.h>
-#include <sys/io.h>
-
-// FIXME user a Port
-#define cga_idx_port 0x3d4
-#define cga_dat_port 0x3d5
-
-// FIXME make constexpr
-#define cursor_start 0x0a
-#define cursor_end 0x0b
-#define cursor_addr_h 0x0e
-#define cursor_addr_l 0x0f
-#define cursor_hide 0x20
-
-static_assert(sizeof(struct VGA::VGAEntry) == 2, "sizeof VGAEntry");
-
-// FIXME make constexpr
-const int width = 80;
-const int height = 25;
-
-// *** Cursor ***
-// FIXME make VGA members
-void
-vga_enable_cursor(unsigned char start, unsigned char end)
-{
-  outb(cursor_start, cga_idx_port);
-  outb((inb(cga_dat_port) & 0xc0) | start, cga_dat_port);
-
-  outb(cursor_end, cga_idx_port);
-  outb((inb(cga_dat_port) & 0xe0) | end, cga_dat_port);
-}
-
-void
-vga_disable_cursor()
-{
-  outb(cursor_start, cga_idx_port);
-  outb(cursor_hide, cga_dat_port);
-}
-
-void
-VGA::update_cursor()
-{
-  const uint16_t pos = row * width + col;
-
-  outb(cursor_addr_l, cga_idx_port);
-  outb(pos & 0xff, cga_dat_port);
-
-  outb(cursor_addr_h, cga_idx_port);
-  outb((pos >> 8) & 0xff, cga_dat_port);
-}
-
-// *** Text Mode Output ***
-void
-VGA::putc(char a)
-{
-  switch (a) {
-  case '\n':
-    col = 0;
-    ++row;
-    break;
-  case '\r':
-    col = 0;
-    break;
-  case '\b':
-    --col;
-    if (col < 0) col = 0;
-    break;
-  default:
-    buffer[row * width + col].text = a;
-    ++col;
-  }
-
-  if (col == width) {
-    col = 0;
-    ++row;
-  }
-
-  if (row == height) {
-    // scroll up
-    for (int y = 1; y < height; ++y)
-      for (int x = 0; x < width; ++x) {
-        const int prev = (y - 1) * width + x;
-        const int curr = y * width + x;
-        buffer[prev] = buffer[curr];
-      }
-    // blank out last row
-    for (int i = (height - 1) * width; i < height * width; ++i) buffer[i].text = ' ';
-    --row;
-  }
-}
-
-int
-VGA::puts(const char *string, int len)
-{
-  int written = 0;
-  if (len == -1)
-    while (*string != '\0') {
-      putc(*string);
-      ++string;
-      ++written;
-    }
-
-  else
-    for (int i = 0; i < len; ++i) {
-      putc(string[i]);
-      ++written;
-    }
-  return written;
-}
-
-// *** Text Mode ***
-VGA::VGA(void *addr)
-{
-  buffer = (struct VGAEntry *)addr;
-  vga_enable_cursor(14, 15);
-  clear(VGA_COLOR_LIGHT_BLUE, VGA_COLOR_LIGHT_GREY);
-}
-FILE *
-vga_init(void *buffer)
-{
-  static VGA device(buffer);
-  return &device;
-}
-
-void
-VGA::clear(enum vga_color foreground, enum vga_color background)
-{
-  for (int y = 0; y < height; ++y)
-    for (int x = 0; x < width; ++x) {
-      const int index = y * width + x;
-      buffer[index].text = ' ';
-      buffer[index].foreground = foreground;
-      buffer[index].background = background;
-    }
-  col = row = 0;
-  update_cursor();
-}