serial.h

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/*
 *  This file contains the TTY driver table definition
 *
 *  This driver uses the termios pseudo driver.
 *
 *  COPYRIGHT (c) 1989-1999.
 *  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 __LIBCHIP_SERIAL_h
#define __LIBCHIP_SERIAL_h
 
#include <termios.h>
 
#include <rtems.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*
 *  Types for get and set register routines
 */
 
typedef uint8_t   (*getRegister_f)(uintptr_t port, uint8_t reg);
 
typedef void      (*setRegister_f)(uintptr_t port, uint8_t reg, uint8_t  value);
 
typedef uint8_t   (*getData_f)(uintptr_t port);
 
typedef void      (*setData_f)(uintptr_t port, uint8_t value);
 
typedef struct _console_fns {
  bool    (*deviceProbe)(int minor);
  int     (*deviceFirstOpen)(int major, int minor, void *arg);
  int     (*deviceLastClose)(int major, int minor, void *arg);
  int     (*deviceRead)(int minor);
  ssize_t (*deviceWrite)(int minor, const char *buf, size_t len);
  void    (*deviceInitialize)(int minor);
  void    (*deviceWritePolled)(int minor, char cChar);
  int     (*deviceSetAttributes)(int minor, const struct termios *t);
  bool      deviceOutputUsesInterrupts;
} console_fns;
 
typedef struct _console_flow {
  int (*deviceStopRemoteTx)(int minor);
  int (*deviceStartRemoteTx)(int minor);
} console_flow;
 
 
typedef enum {
  SERIAL_MC68681,              /* Motorola MC68681 or Exar 88681 */
  SERIAL_NS16550,              /* National Semiconductor NS16550 */
  SERIAL_NS16550_WITH_FDR,     /* National Semiconductor NS16550
                                  with Fractional Divider Register (FDR) */
  SERIAL_Z85C30,               /* Zilog Z85C30 */
  SERIAL_CUSTOM                /* BSP specific driver */
} console_devs;
 
typedef struct _console_tbl {
  const char    *sDeviceName;
  console_devs   deviceType;
  const console_fns *pDeviceFns;
  bool         (*deviceProbe)(int minor);
  const console_flow *pDeviceFlow;
  uint32_t       ulMargin;
  uint32_t       ulHysteresis;
  void          *pDeviceParams;
  uint32_t       ulCtrlPort1;
  uint32_t       ulCtrlPort2;
  uint32_t       ulDataPort;
  getRegister_f  getRegister;
  setRegister_f  setRegister;
  getData_f      getData;
  /* This is the routine used to write the data register (TX). */
  setData_f      setData;
  uint32_t       ulClock;
  unsigned int   ulIntVector;
} console_tbl;
 
typedef struct _console_data {
  void                   *termios_data;
  volatile bool           bActive;
  void                   *pDeviceContext;
} console_data;
 
extern console_tbl   **Console_Port_Tbl;
extern unsigned long   Console_Port_Count;
 
extern console_tbl    Console_Configuration_Ports[];
extern unsigned long  Console_Configuration_Count;
 
extern console_data  *Console_Port_Data;
 
extern rtems_device_minor_number Console_Port_Minor;
 
void bsp_console_select(void);
 
#ifdef __cplusplus
}
#endif
 
#endif