[ac7d5ef0] | 1 | /* |
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| 2 | * This file contains the MVME162 console IO package. |
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| 3 | * |
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[08311cc3] | 4 | * COPYRIGHT (c) 1989-1999. |
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[ac7d5ef0] | 5 | * On-Line Applications Research Corporation (OAR). |
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| 6 | * |
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[98e4ebf5] | 7 | * The license and distribution terms for this file may be |
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| 8 | * found in the file LICENSE in this distribution or at |
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[f4fe0092] | 9 | * http://www.rtems.com/license/LICENSE. |
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[ac7d5ef0] | 10 | * |
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| 11 | * Modifications of respective RTEMS file: COPYRIGHT (c) 1994. |
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| 12 | * EISCAT Scientific Association. M.Savitski |
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| 13 | * |
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| 14 | * This material is a part of the MVME162 Board Support Package |
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| 15 | * for the RTEMS executive. Its licensing policies are those of the |
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| 16 | * RTEMS above. |
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| 17 | * |
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| 18 | * $Id$ |
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| 19 | */ |
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| 20 | |
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| 21 | #define M162_INIT |
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| 22 | |
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[3a4ae6c] | 23 | #include <bsp.h> |
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| 24 | #include <rtems/libio.h> |
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[a9a27b5] | 25 | #include <rtems/ringbuf.h> |
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[ac7d5ef0] | 26 | |
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[98100d2] | 27 | Ring_buffer_t Console_Buffer[2]; |
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[c6fb8e90] | 28 | |
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| 29 | /* |
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| 30 | * Interrupt handler for receiver interrupts |
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[ac7d5ef0] | 31 | */ |
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| 32 | |
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[c6fb8e90] | 33 | rtems_isr C_Receive_ISR(rtems_vector_number vector) |
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| 34 | { |
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| 35 | register int ipend, port; |
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| 36 | |
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| 37 | ZWRITE0(1, 0x38); /* reset highest IUS */ |
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| 38 | |
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| 39 | ipend = ZREAD(1, 3); /* read int pending from A side */ |
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| 40 | |
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| 41 | if (ipend == 0x04) port = 0; /* channel B intr pending */ |
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| 42 | else if (ipend == 0x20) port = 1; /* channel A intr pending */ |
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| 43 | else return; |
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| 44 | |
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[98100d2] | 45 | Ring_buffer_Add_character(&Console_Buffer[port], ZREADD(port)); |
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[c6fb8e90] | 46 | |
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| 47 | if (ZREAD(port, 1) & 0x70) { /* check error stat */ |
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| 48 | ZWRITE0(port, 0x30); /* reset error */ |
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| 49 | } |
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| 50 | } |
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| 51 | |
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[ac7d5ef0] | 52 | rtems_device_driver console_initialize( |
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| 53 | rtems_device_major_number major, |
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| 54 | rtems_device_minor_number minor, |
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[3a4ae6c] | 55 | void *arg |
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[ac7d5ef0] | 56 | ) |
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| 57 | { |
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[c6fb8e90] | 58 | int i; |
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[3a4ae6c] | 59 | rtems_status_code status; |
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[c6fb8e90] | 60 | |
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| 61 | /* |
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| 62 | * Initialise receiver interrupts on both ports |
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| 63 | */ |
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| 64 | |
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| 65 | for (i = 0; i <= 1; i++) { |
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[98100d2] | 66 | Ring_buffer_Initialize( &Console_Buffer[i] ); |
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[c6fb8e90] | 67 | ZWRITE(i, 2, SCC_VECTOR); |
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| 68 | ZWRITE(i, 10, 0); |
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| 69 | ZWRITE(i, 1, 0x10); /* int on all Rx chars or special condition */ |
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| 70 | ZWRITE(i, 9, 8); /* master interrupt enable */ |
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| 71 | } |
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| 72 | |
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| 73 | set_vector(C_Receive_ISR, SCC_VECTOR, 1); /* install ISR for ports A and B */ |
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| 74 | |
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| 75 | mcchip->vector_base = 0; |
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| 76 | mcchip->gen_control = 2; /* MIEN */ |
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| 77 | mcchip->SCC_int_ctl = 0x13; /* SCC IEN, IPL3 */ |
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| 78 | |
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[3a4ae6c] | 79 | status = rtems_io_register_name( |
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| 80 | "/dev/console", |
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| 81 | major, |
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[da646dd] | 82 | (rtems_device_minor_number) 1 |
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[3a4ae6c] | 83 | ); |
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| 84 | |
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| 85 | if (status != RTEMS_SUCCESSFUL) |
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| 86 | rtems_fatal_error_occurred(status); |
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| 87 | |
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| 88 | status = rtems_io_register_name( |
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| 89 | "/dev/tty00", |
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| 90 | major, |
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| 91 | (rtems_device_minor_number) 0 |
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| 92 | ); |
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| 93 | |
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| 94 | if (status != RTEMS_SUCCESSFUL) |
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| 95 | rtems_fatal_error_occurred(status); |
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| 96 | |
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| 97 | status = rtems_io_register_name( |
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| 98 | "/dev/tty01", |
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| 99 | major, |
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[da646dd] | 100 | (rtems_device_minor_number) 1 |
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[3a4ae6c] | 101 | ); |
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| 102 | |
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| 103 | if (status != RTEMS_SUCCESSFUL) |
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| 104 | rtems_fatal_error_occurred(status); |
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| 105 | |
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| 106 | return RTEMS_SUCCESSFUL; |
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[ac7d5ef0] | 107 | } |
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| 108 | |
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[c6fb8e90] | 109 | /* |
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| 110 | * Non-blocking char input |
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[ac7d5ef0] | 111 | */ |
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| 112 | |
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[c6fb8e90] | 113 | rtems_boolean char_ready(int port, char *ch) |
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[ac7d5ef0] | 114 | { |
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[98100d2] | 115 | if ( Ring_buffer_Is_empty( &Console_Buffer[port] ) ) |
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[c6fb8e90] | 116 | return FALSE; |
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[ac7d5ef0] | 117 | |
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[98100d2] | 118 | Ring_buffer_Remove_character( &Console_Buffer[port], *ch ); |
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[c6fb8e90] | 119 | |
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| 120 | return TRUE; |
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[ac7d5ef0] | 121 | } |
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| 122 | |
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[c6fb8e90] | 123 | /* |
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| 124 | * Block on char input |
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[ac7d5ef0] | 125 | */ |
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| 126 | |
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[3a4ae6c] | 127 | char inbyte(int port) |
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[ac7d5ef0] | 128 | { |
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[c6fb8e90] | 129 | unsigned char tmp_char; |
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| 130 | |
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| 131 | while ( !char_ready(port, &tmp_char) ); |
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| 132 | return tmp_char; |
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[ac7d5ef0] | 133 | } |
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| 134 | |
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[c6fb8e90] | 135 | /* |
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| 136 | * This routine transmits a character out the SCC. It no longer supports |
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| 137 | * XON/XOFF flow control. |
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[ac7d5ef0] | 138 | */ |
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| 139 | |
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[da646dd] | 140 | void outbyte(char ch, int port) |
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[ac7d5ef0] | 141 | { |
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[c6fb8e90] | 142 | while (1) { |
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| 143 | if (ZREAD0(port) & TX_BUFFER_EMPTY) break; |
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[ac7d5ef0] | 144 | } |
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[c6fb8e90] | 145 | ZWRITED(port, ch); |
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[ac7d5ef0] | 146 | } |
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| 147 | |
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| 148 | /* |
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[3a4ae6c] | 149 | * Open entry point |
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| 150 | */ |
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| 151 | |
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| 152 | rtems_device_driver console_open( |
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| 153 | rtems_device_major_number major, |
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| 154 | rtems_device_minor_number minor, |
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| 155 | void * arg |
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| 156 | ) |
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| 157 | { |
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| 158 | return RTEMS_SUCCESSFUL; |
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| 159 | } |
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| 160 | |
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| 161 | /* |
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| 162 | * Close entry point |
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| 163 | */ |
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| 164 | |
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| 165 | rtems_device_driver console_close( |
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| 166 | rtems_device_major_number major, |
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| 167 | rtems_device_minor_number minor, |
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| 168 | void * arg |
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| 169 | ) |
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| 170 | { |
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| 171 | return RTEMS_SUCCESSFUL; |
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| 172 | } |
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| 173 | |
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| 174 | /* |
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| 175 | * read bytes from the serial port. We only have stdin. |
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[ac7d5ef0] | 176 | */ |
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| 177 | |
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[3a4ae6c] | 178 | rtems_device_driver console_read( |
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| 179 | rtems_device_major_number major, |
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| 180 | rtems_device_minor_number minor, |
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| 181 | void * arg |
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| 182 | ) |
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[ac7d5ef0] | 183 | { |
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[3a4ae6c] | 184 | rtems_libio_rw_args_t *rw_args; |
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| 185 | char *buffer; |
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| 186 | int maximum; |
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| 187 | int count = 0; |
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| 188 | |
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| 189 | rw_args = (rtems_libio_rw_args_t *) arg; |
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[c6fb8e90] | 190 | |
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[3a4ae6c] | 191 | buffer = rw_args->buffer; |
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| 192 | maximum = rw_args->count; |
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[ac7d5ef0] | 193 | |
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[3a4ae6c] | 194 | if ( minor > 1 ) |
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| 195 | return RTEMS_INVALID_NUMBER; |
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| 196 | |
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| 197 | for (count = 0; count < maximum; count++) { |
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| 198 | buffer[ count ] = inbyte( minor ); |
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| 199 | if (buffer[ count ] == '\n' || buffer[ count ] == '\r') { |
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| 200 | buffer[ count++ ] = '\n'; |
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[ac7d5ef0] | 201 | break; |
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| 202 | } |
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| 203 | } |
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[3a4ae6c] | 204 | |
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| 205 | rw_args->bytes_moved = count; |
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| 206 | return (count >= 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED; |
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[ac7d5ef0] | 207 | } |
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| 208 | |
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| 209 | /* |
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[3a4ae6c] | 210 | * write bytes to the serial port. Stdout and stderr are the same. |
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[ac7d5ef0] | 211 | */ |
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| 212 | |
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[3a4ae6c] | 213 | rtems_device_driver console_write( |
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| 214 | rtems_device_major_number major, |
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| 215 | rtems_device_minor_number minor, |
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| 216 | void * arg |
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| 217 | ) |
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[ac7d5ef0] | 218 | { |
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[3a4ae6c] | 219 | int count; |
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| 220 | int maximum; |
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| 221 | rtems_libio_rw_args_t *rw_args; |
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| 222 | char *buffer; |
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| 223 | |
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| 224 | rw_args = (rtems_libio_rw_args_t *) arg; |
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| 225 | |
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| 226 | buffer = rw_args->buffer; |
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| 227 | maximum = rw_args->count; |
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| 228 | |
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| 229 | if ( minor > 1 ) |
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| 230 | return RTEMS_INVALID_NUMBER; |
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| 231 | |
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| 232 | for (count = 0; count < maximum; count++) { |
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| 233 | if ( buffer[ count ] == '\n') { |
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| 234 | outbyte('\r', minor ); |
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[ac7d5ef0] | 235 | } |
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[3a4ae6c] | 236 | outbyte( buffer[ count ], minor ); |
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[ac7d5ef0] | 237 | } |
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[3652ad35] | 238 | |
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| 239 | rw_args->bytes_moved = maximum; |
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| 240 | return 0; |
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[3a4ae6c] | 241 | } |
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| 242 | |
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| 243 | /* |
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| 244 | * IO Control entry point |
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| 245 | */ |
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| 246 | |
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| 247 | rtems_device_driver console_control( |
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| 248 | rtems_device_major_number major, |
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| 249 | rtems_device_minor_number minor, |
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| 250 | void * arg |
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| 251 | ) |
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| 252 | { |
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| 253 | return RTEMS_SUCCESSFUL; |
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[ac7d5ef0] | 254 | } |
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