1 files changed, 97 insertions, 0 deletions
diff --git a/include/libchip/ns16550.h b/include/libchip/ns16550.h
new file mode 100644
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+++ b/include/libchip/ns16550.h
@@ -0,0 +1,97 @@
+/**
+ *  @file
+ *  
+ */
+
+/*
+ *  COPYRIGHT (c) 1998 by Radstone Technology
+ *
+ *  THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY
+ *  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK
+ *  AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU.
+ *
+ *  You are hereby granted permission to use, copy, modify, and distribute
+ *  this file, provided that this notice, plus the above copyright notice
+ *  and disclaimer, appears in all copies. Radstone Technology will provide
+ *  no support for this code.
+ *
+ *  COPYRIGHT (c) 1989-2012.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _NS16550_H_
+#define _NS16550_H_
+
+#include <rtems/termiostypes.h>
+#include <libchip/serial.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Driver function table
+ */
+
+extern const console_fns ns16550_fns;
+extern const console_fns ns16550_fns_polled;
+
+/*
+ * Flow control function tables
+ */
+
+extern const console_flow ns16550_flow_RTSCTS;
+extern const console_flow ns16550_flow_DTRCTS;
+
+/*
+ *  Helpers for printk
+ */
+void ns16550_outch_polled(console_tbl *c, char out);
+int ns16550_inch_polled(console_tbl *c);
+
+/* Alternative NS16550 driver using the Termios device context */
+
+typedef uint8_t (*ns16550_get_reg)(uintptr_t port, uint8_t reg);
+
+typedef void (*ns16550_set_reg)(uintptr_t port, uint8_t reg, uint8_t value);
+
+typedef struct {
+  rtems_termios_device_context base;
+  ns16550_get_reg get_reg;
+  ns16550_set_reg set_reg;
+  uintptr_t port;
+  rtems_vector_number irq;
+  uint32_t clock;
+  uint32_t initial_baud;
+  bool has_fractional_divider_register;
+  uint8_t modem_control;
+  size_t out_total;
+  size_t out_remaining;
+  size_t out_current;
+  const char *out_buf;
+  rtems_termios_tty *tty;
+} ns16550_context;
+
+extern const rtems_termios_device_handler ns16550_handler_interrupt;
+extern const rtems_termios_device_handler ns16550_handler_polled;
+extern const rtems_termios_device_handler ns16550_handler_task;
+
+extern const rtems_termios_device_flow ns16550_flow_rtscts;
+extern const rtems_termios_device_flow ns16550_flow_dtrcts;
+
+void ns16550_polled_putchar(rtems_termios_device_context *base, char out);
+
+int ns16550_polled_getchar(rtems_termios_device_context *base);
+
+bool ns16550_probe(rtems_termios_device_context *base);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _NS16550_H_ */