1 files changed, 0 insertions, 117 deletions
diff --git a/devices/uart_16550.c b/devices/uart_16550.c
deleted file mode 100644
index 1adcf38..0000000
--- a/devices/uart_16550.c
+++ /dev/null
@@ -1,117 +0,0 @@
-#include "uart.h"
-#include <stddef.h>
-#include <sys/io.h>
-
-enum uart_16550_offset {
-  Data = 0,             // read from receive buffer / write to transmit buffer | BaudDiv_l
-  InterruptControl = 1, // interrupt enable | BaudDiv_h
-  FifoControl = 2,      // interrupt ID and FIFO control
-  LineControl = 3,      // most significant bit is the DLAB
-  ModemControl = 4,
-  LineStatus = 5,
-  ModemStatus = 6,
-  Scratch = 7,
-};
-// Line Control
-// | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-// |dla|   | parity    | s | data  |
-
-enum LineControl {
-  d5bit = 0x00, // 0000 0000  data bits
-  d6bit = 0x01, // 0000 0001
-  d7bit = 0x02, // 0000 0010
-  d8bit = 0x03, // 0000 0011
-  // none = 0b00000000, // parity bits
-  odd = 0x08,   // 0000 1000
-  even = 0x18,  // 0001 1000
-  mark = 0x28,  // 0010 1000
-  space = 0x38, // 0011 1000
-  // s1bit = 0b00000000, // stop bits
-  s2bit = 0x04, // 0000 0100  1.5 for 5bit data; 2 otherwise
-  dlab = 0x80   // 1000 0000  divisor latch access bit
-};
-
-// Line Status Register
-enum LineStatus {
-  DR = (1 << 0),   // data ready: see if there is data to read
-  OE = (1 << 1),   // overrun error: see if there has been data lost
-  PE = (1 << 2),   // parity error: see if there was error in transmission
-  FE = (1 << 3),   // framing error: see if a stop bit was missing
-  BI = (1 << 4),   // break indicator: see if there is a break in data input
-  THRE = (1 << 5), // transmitter holding register empty: see if transmission buffer is empty
-  TEMT = (1 << 6), // transmitter empty: see if transmitter is not doing anything
-  ERRO = (1 << 7), // impending error: see if there is an error with a word in the input buffer
-};
-
-int
-uart_thre(enum UART port)
-{
-  return inb(port + LineStatus) & THRE;
-}
-
-void
-uart_write(const FILE *self, char a)
-{
-  while (uart_thre(self->id) == 0) {}
-  outb(a, self->id);
-
-  if (a == '\n') {
-    while (uart_thre(self->id) == 0) {}
-    outb('\r', self->id);
-  }
-}
-
-int
-uart_puts(const FILE *self, const char *string, int length)
-{
-  int written = 0;
-
-  if (length == -1)
-    while (*string != '\0') {
-      uart_write(self, *string);
-      ++string;
-      ++written;
-    }
-
-  else
-    for (int i = 0; i < length; ++i) {
-      uart_write(self, string[i]);
-      ++written;
-    }
-
-  return written;
-}
-
-void
-uart_flush(__attribute__((unused)) const FILE *self)
-{
-}
-
-FILE uart_stream;
-
-FILE *
-uart_init(enum UART port)
-{
-  outb(0x00, port + 1); // Disable all interrupts
-  outb(0x80, port + 3); // Enable DLAB (set baud rate divisor)
-  outb(0x03, port + 0); // Set divisor to 3 (lo byte) 38400 baud
-  outb(0x00, port + 1); //                  (hi byte)
-  outb(0x03, port + 3); // 8 bits, no parity, one stop bit
-  outb(0xc7, port + 2); // Enable FIFO, clear them, with 14-byte threshold
-  outb(0x0b, port + 4); // IRQs enabled, RTS/DSR set
-  outb(0x1e, port + 4); // Set in loopback mode, test the serial chip
-  outb(0xae, port + 0); // Test serial chip (send byte 0xAE and check if serial
-                        // returns same byte)
-
-  // Check if serial is faulty (i.e: not same byte as sent)
-  if (inb(port + 0) != 0xae) { return NULL; }
-
-  // If serial is not faulty set it in normal operation mode
-  // (not-loopback with IRQs enabled and OUT#1 and OUT#2 bits enabled)
-  outb(0x0f, port + 4);
-  uart_stream.id = port;
-  uart_stream.putc = &uart_write;
-  uart_stream.puts = &uart_puts;
-  uart_stream.flush = &uart_flush;
-  return &uart_stream;
-}