1 | /* |
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2 | * |
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3 | * COPYRIGHT (c) 1989-1999. |
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4 | * On-Line Applications Research Corporation (OAR). |
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5 | * |
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6 | * The license and distribution terms for this file may be |
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7 | * found in the file LICENSE in this distribution or at |
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8 | * http://www.rtems.com/license/LICENSE. |
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9 | */ |
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10 | |
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11 | #ifndef _MC68681_H_ |
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12 | #define _MC68681_H_ |
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13 | |
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14 | #ifdef __cplusplus |
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15 | extern "C" { |
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16 | #endif |
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17 | |
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18 | /* |
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19 | * These are just used in the interface between this driver and |
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20 | * the read/write register routines when accessing the first |
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21 | * control port. |
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22 | */ |
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23 | |
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24 | #define MC68681_STATUS 1 |
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25 | #define MC68681_RX_BUFFER 3 |
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26 | |
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27 | #define MC68681_MODE 0 |
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28 | #define MC68681_CLOCK_SELECT 1 |
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29 | #define MC68681_COMMAND 2 |
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30 | #define MC68681_TX_BUFFER 3 |
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31 | |
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32 | /* |
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33 | * Data Port bit map configuration |
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34 | * |
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35 | * D0 : Baud Rate Set Selection |
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36 | * D1 - D2 : Extended Baud Rate Setting |
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37 | */ |
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38 | |
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39 | #define MC68681_DATA_BAUD_RATE_SET_1 0 /* ACR[7] = 0 */ |
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40 | #define MC68681_DATA_BAUD_RATE_SET_2 1 /* ACR[7] = 1 */ |
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41 | |
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42 | #define MC68681_XBRG_IGNORED (0 << 1) |
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43 | #define MC68681_XBRG_ENABLED (1 << 1) |
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44 | #define MC68681_XBRG_DISABLED (2 << 1) |
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45 | #define MC68681_XBRG_MASK (3 << 1) |
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46 | |
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47 | /* |
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48 | * Custom baud rate table information |
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49 | */ |
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50 | |
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51 | typedef unsigned char mc68681_baud_t; |
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52 | typedef mc68681_baud_t mc68681_baud_table_t[RTEMS_TERMIOS_NUMBER_BAUD_RATES]; |
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53 | |
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54 | #define MC68681_BAUD_NOT_VALID 0xFF |
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55 | |
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56 | extern mc68681_baud_t |
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57 | mc68681_baud_rate_table[4][RTEMS_TERMIOS_NUMBER_BAUD_RATES]; |
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58 | |
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59 | |
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60 | /* |
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61 | * Driver function table |
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62 | */ |
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63 | |
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64 | extern const console_fns mc68681_fns; |
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65 | extern const console_fns mc68681_fns_polled; |
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66 | |
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67 | /* |
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68 | * Default register access routines |
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69 | */ |
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70 | |
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71 | uint8_t mc68681_get_register( /* registers are at 1 byte boundaries */ |
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72 | uintptr_t ulCtrlPort, /* and accessed as bytes */ |
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73 | uint8_t ucRegNum |
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74 | ); |
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75 | |
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76 | void mc68681_set_register( |
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77 | uintptr_t ulCtrlPort, |
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78 | uint8_t ucRegNum, |
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79 | uint8_t ucData |
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80 | ); |
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81 | |
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82 | uint8_t mc68681_get_register_2( /* registers are at 2 byte boundaries */ |
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83 | uintptr_t ulCtrlPort, /* and accessed as bytes */ |
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84 | uint8_t ucRegNum |
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85 | ); |
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86 | |
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87 | void mc68681_set_register_2( |
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88 | uintptr_t ulCtrlPort, |
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89 | uint8_t ucRegNum, |
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90 | uint8_t ucData |
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91 | ); |
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92 | |
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93 | uint8_t mc68681_get_register_4( /* registers are at 4 byte boundaries */ |
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94 | uintptr_t ulCtrlPort, /* and accessed as bytes */ |
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95 | uint8_t ucRegNum |
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96 | ); |
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97 | |
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98 | void mc68681_set_register_4( |
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99 | uintptr_t ulCtrlPort, |
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100 | uint8_t ucRegNum, |
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101 | uint8_t ucData |
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102 | ); |
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103 | |
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104 | uint8_t mc68681_get_register_8( /* registers are at 8 byte boundaries */ |
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105 | uintptr_t ulCtrlPort, /* and accessed as bytes */ |
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106 | uint8_t ucRegNum |
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107 | ); |
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108 | |
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109 | void mc68681_set_register_8( |
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110 | uintptr_t ulCtrlPort, |
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111 | uint8_t ucRegNum, |
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112 | uint8_t ucData |
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113 | ); |
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114 | |
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115 | |
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116 | #ifdef __cplusplus |
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117 | } |
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118 | #endif |
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119 | |
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120 | #endif /* _MC68681_H_ */ |
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