1 | /* |
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2 | * This file contains the TTY driver table definition |
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3 | * |
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4 | * This driver uses the termios pseudo driver. |
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5 | * |
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6 | * COPYRIGHT (c) 1989-1999. |
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7 | * On-Line Applications Research Corporation (OAR). |
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8 | * |
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9 | * The license and distribution terms for this file may be |
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10 | * found in the file LICENSE in this distribution or at |
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11 | * http://www.OARcorp.com/rtems/license.html. |
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12 | * |
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13 | * $Id$ |
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14 | */ |
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15 | |
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16 | #ifndef __LIBCHIP_SERIAL_h |
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17 | #define __LIBCHIP_SERIAL_h |
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18 | |
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19 | #include <termios.h> |
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20 | |
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21 | /* |
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22 | * Types for get and set register routines |
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23 | */ |
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24 | |
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25 | typedef unsigned8 (*getRegister_f)(unsigned32 port, unsigned8 register); |
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26 | typedef void (*setRegister_f)( |
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27 | unsigned32 port, unsigned8 reg, unsigned8 value); |
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28 | typedef unsigned8 (*getData_f)(unsigned32 port); |
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29 | typedef void (*setData_f)(unsigned32 port, unsigned8 value); |
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30 | |
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31 | typedef struct _console_fns { |
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32 | boolean (*deviceProbe)(int minor); |
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33 | int (*deviceFirstOpen)(int major, int minor, void *arg); |
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34 | int (*deviceLastClose)(int major, int minor, void *arg); |
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35 | int (*deviceRead)(int minor); |
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36 | int (*deviceWrite)(int minor, const char *buf, int len); |
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37 | void (*deviceInitialize)(int minor); |
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38 | void (*deviceWritePolled)(int minor, char cChar); |
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39 | int (*deviceSetAttributes)(int minor, const struct termios *t); |
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40 | int deviceOutputUsesInterrupts; |
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41 | } console_fns; |
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42 | |
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43 | typedef struct _console_flow { |
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44 | int (*deviceStopRemoteTx)(int minor); |
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45 | int (*deviceStartRemoteTx)(int minor); |
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46 | } console_flow; |
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47 | |
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48 | typedef enum { |
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49 | SERIAL_MC68681, /* Motorola MC68681 or Exar 88681 */ |
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50 | SERIAL_NS16550, /* National Semiconductor NS16550 */ |
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51 | SERIAL_Z85C30, /* Zilog Z85C30 */ |
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52 | SERIAL_CUSTOM /* BSP specific driver */ |
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53 | } console_devs; |
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54 | |
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55 | /* |
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56 | * Each field is interpreted thus: |
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57 | * |
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58 | * sDeviceName This is the name of the device. |
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59 | * |
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60 | * deviceType This indicates the chip type. It is especially important when |
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61 | * multiple devices share the same interrupt vector and must be |
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62 | * distinguished. |
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63 | * |
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64 | * pDeviceFns This is a pointer to the set of driver routines to use. |
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65 | * |
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66 | * pDeviceFlow This is a pointer to the set of flow control routines to |
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67 | * use. Serial device drivers will typically supply RTSCTS |
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68 | * and DTRCTS handshake routines for DCE to DCE communication, |
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69 | * however for DCE to DTE communication, no such routines |
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70 | * should be necessary as RTS will be driven automatically |
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71 | * when the transmitter is active. |
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72 | * |
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73 | * ulMargin The high water mark in the input buffer is set to the buffer |
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74 | * size less ulMargin. Once this level is reached, the driver's |
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75 | * flow control routine used to stop the remote transmitter will |
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76 | * be called. This figure should be greater than or equal to |
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77 | * the number of stages of FIFO between the transmitter and |
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78 | * receiver. |
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79 | * |
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80 | * NOTE: At the current time, this parameter is hard coded |
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81 | * in termios and this number is ignored. |
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82 | * |
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83 | * ulHysteresis After the high water mark specified by ulMargin has been |
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84 | * reached, the driver's routine to re-start the remote |
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85 | * transmitter will be called once the level in the input |
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86 | * buffer has fallen by ulHysteresis bytes. |
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87 | * |
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88 | * NOTE: At the current time, this parameter is hard coded |
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89 | * in termios and this number is ignored. |
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90 | * |
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91 | * pDeviceParams This contains either device specific data or a pointer to a |
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92 | * device specific structure containing additional information |
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93 | * not provided in this table. |
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94 | * |
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95 | * ulCtrlPort1 This is the primary control port number for the device. This |
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96 | * may be used to specify different instances of the same device |
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97 | * type. |
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98 | * |
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99 | * ulCtrlPort2 This is the secondary control port number, of use when a given |
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100 | * device has more than one available channel. |
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101 | * |
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102 | * ulDataPort This is the port number for the data port of the device |
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103 | * |
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104 | * getRegister This is the routine used to read register values. |
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105 | * |
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106 | * setRegister This is the routine used to write register values. |
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107 | * |
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108 | * getData This is the routine used to read the data register (RX). |
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109 | * |
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110 | * setData This is the routine used to write the data register (TX). |
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111 | * |
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112 | * ulClock This is the baud rate clock speed. |
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113 | * |
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114 | * ulIntVector This encodes the interrupt vector of the device. |
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115 | */ |
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116 | |
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117 | typedef struct _console_tbl { |
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118 | char *sDeviceName; |
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119 | console_devs deviceType; |
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120 | console_fns *pDeviceFns; |
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121 | boolean (*deviceProbe)(int minor); |
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122 | console_flow *pDeviceFlow; |
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123 | unsigned32 ulMargin; |
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124 | unsigned32 ulHysteresis; |
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125 | void *pDeviceParams; |
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126 | unsigned32 ulCtrlPort1; |
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127 | unsigned32 ulCtrlPort2; |
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128 | unsigned32 ulDataPort; |
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129 | getRegister_f getRegister; |
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130 | setRegister_f setRegister; |
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131 | getData_f getData; |
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132 | setData_f setData; |
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133 | unsigned32 ulClock; |
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134 | unsigned int ulIntVector; |
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135 | } console_tbl; |
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136 | |
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137 | typedef struct _console_data { |
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138 | void *termios_data; |
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139 | volatile boolean bActive; |
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140 | /* |
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141 | * This field may be used for any purpose required by the driver |
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142 | */ |
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143 | void *pDeviceContext; |
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144 | } console_data; |
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145 | |
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146 | extern console_tbl Console_Port_Tbl[]; |
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147 | extern console_data Console_Port_Data[]; |
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148 | extern unsigned long Console_Port_Count; |
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149 | |
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150 | #endif |
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151 | /* end of include file */ |
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