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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.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#ifndef __LIBCHIP_SERIAL_h
#define __LIBCHIP_SERIAL_h
#include <termios.h>
/*
* Types for get and set register routines
*/
typedef unsigned8 (*getRegister_f)(unsigned32 port, unsigned8 register);
typedef void (*setRegister_f)(
unsigned32 port, unsigned8 reg, unsigned8 value);
typedef unsigned8 (*getData_f)(unsigned32 port);
typedef void (*setData_f)(unsigned32 port, unsigned8 value);
typedef struct _console_fns {
boolean (*deviceProbe)(int minor);
int (*deviceFirstOpen)(int major, int minor, void *arg);
int (*deviceLastClose)(int major, int minor, void *arg);
int (*deviceRead)(int minor);
int (*deviceWrite)(int minor, const char *buf, int len);
void (*deviceInitialize)(int minor);
void (*deviceWritePolled)(int minor, char cChar);
int (*deviceSetAttributes)(int minor, const struct termios *t);
int 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_Z85C30, /* Zilog Z85C30 */
SERIAL_CUSTOM /* BSP specific driver */
} console_devs;
/*
* Each field is interpreted thus:
*
* sDeviceName This is the name of the device.
*
* deviceType This indicates the chip type. It is especially important when
* multiple devices share the same interrupt vector and must be
* distinguished.
*
* pDeviceFns This is a pointer to the set of driver routines to use.
*
* pDeviceFlow This is a pointer to the set of flow control routines to
* use. Serial device drivers will typically supply RTSCTS
* and DTRCTS handshake routines for DCE to DCE communication,
* however for DCE to DTE communication, no such routines
* should be necessary as RTS will be driven automatically
* when the transmitter is active.
*
* ulMargin The high water mark in the input buffer is set to the buffer
* size less ulMargin. Once this level is reached, the driver's
* flow control routine used to stop the remote transmitter will
* be called. This figure should be greater than or equal to
* the number of stages of FIFO between the transmitter and
* receiver.
*
* NOTE: At the current time, this parameter is hard coded
* in termios and this number is ignored.
*
* ulHysteresis After the high water mark specified by ulMargin has been
* reached, the driver's routine to re-start the remote
* transmitter will be called once the level in the input
* buffer has fallen by ulHysteresis bytes.
*
* NOTE: At the current time, this parameter is hard coded
* in termios and this number is ignored.
*
* pDeviceParams This contains either device specific data or a pointer to a
* device specific structure containing additional information
* not provided in this table.
*
* ulCtrlPort1 This is the primary control port number for the device. This
* may be used to specify different instances of the same device
* type.
*
* ulCtrlPort2 This is the secondary control port number, of use when a given
* device has more than one available channel.
*
* ulDataPort This is the port number for the data port of the device
*
* getRegister This is the routine used to read register values.
*
* setRegister This is the routine used to write register values.
*
* getData This is the routine used to read the data register (RX).
*
* setData This is the routine used to write the data register (TX).
*
* ulClock This is the baud rate clock speed.
*
* ulIntVector This encodes the interrupt vector of the device.
*/
typedef struct _console_tbl {
char *sDeviceName;
console_devs deviceType;
console_fns *pDeviceFns;
boolean (*deviceProbe)(int minor);
console_flow *pDeviceFlow;
unsigned32 ulMargin;
unsigned32 ulHysteresis;
void *pDeviceParams;
unsigned32 ulCtrlPort1;
unsigned32 ulCtrlPort2;
unsigned32 ulDataPort;
getRegister_f getRegister;
setRegister_f setRegister;
getData_f getData;
setData_f setData;
unsigned32 ulClock;
unsigned int ulIntVector;
} console_tbl;
typedef struct _console_data {
void *termios_data;
volatile boolean bActive;
/*
* This field may be used for any purpose required by the driver
*/
void *pDeviceContext;
} console_data;
extern console_tbl Console_Port_Tbl[];
extern console_data Console_Port_Data[];
extern unsigned long Console_Port_Count;
#endif
/* end of include file */
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