[7f96eef] | 1 | /* |
---|
| 2 | * console.c |
---|
| 3 | * |
---|
| 4 | * This file contains the Sparc Instruction Simulator Console driver. |
---|
| 5 | * |
---|
[03f2154e] | 6 | * COPYRIGHT (c) 1989-1997. |
---|
[7f96eef] | 7 | * On-Line Applications Research Corporation (OAR). |
---|
[03f2154e] | 8 | * Copyright assigned to U.S. Government, 1994. |
---|
[7f96eef] | 9 | * |
---|
[03f2154e] | 10 | * The license and distribution terms for this file may in |
---|
| 11 | * the file LICENSE in this distribution or at |
---|
| 12 | * http://www.OARcorp.com/rtems/license.html. |
---|
[7f96eef] | 13 | * |
---|
| 14 | * Ported to ERC32 implementation of the SPARC by On-Line Applications |
---|
| 15 | * Research Corporation (OAR) under contract to the European Space |
---|
| 16 | * Agency (ESA). |
---|
| 17 | * |
---|
| 18 | * ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995. |
---|
| 19 | * European Space Agency. |
---|
| 20 | * |
---|
| 21 | * $Id$ |
---|
| 22 | */ |
---|
| 23 | |
---|
| 24 | #include <bsp.h> |
---|
| 25 | #include <rtems/libio.h> |
---|
| 26 | #include <stdlib.h> |
---|
| 27 | |
---|
| 28 | /* |
---|
| 29 | * Define RDB_BREAK_IN if you need to be able to break in to the |
---|
| 30 | * program with a ctrl-c during remote target debugging. If so, |
---|
| 31 | * UART B will not be accessible from rtems during remote debugging |
---|
| 32 | * if interrupt driven console is used. Does not affect UART A, polled |
---|
| 33 | * mode or when the program runs without remote debugging. |
---|
| 34 | */ |
---|
| 35 | |
---|
| 36 | #define RDB_BREAK_IN |
---|
| 37 | |
---|
| 38 | /* |
---|
| 39 | * Should we use a polled or interrupt drived console? |
---|
| 40 | * |
---|
| 41 | * NOTE: Define only one of these by default. |
---|
| 42 | * |
---|
| 43 | * WARNING: As of sis 1.6, it did not appear that the UART interrupts |
---|
| 44 | * worked in a desirable fashion. Immediately upon writing |
---|
| 45 | * a character into the TX buffer, an interrupt was generated. |
---|
| 46 | * This did not allow enough time for the program to put more |
---|
| 47 | * characters in the buffer. So every character resulted in |
---|
| 48 | * "priming" the transmitter. This effectively results in |
---|
| 49 | * in a polled console with a useless interrupt per character |
---|
| 50 | * on output. It is reasonable to assume that input does not |
---|
| 51 | * share this problem although it was not investigated. |
---|
| 52 | */ |
---|
| 53 | |
---|
| 54 | #ifdef CONSOLE_USE_POLLED |
---|
| 55 | #define OUTBYTE console_outbyte_polled |
---|
| 56 | #define INBYTE console_inbyte_polled |
---|
| 57 | #else |
---|
| 58 | #define OUTBYTE console_outbyte_interrupts |
---|
| 59 | #define INBYTE console_inbyte_interrupts |
---|
| 60 | #endif |
---|
| 61 | |
---|
| 62 | void console_initialize_interrupts( void ); |
---|
| 63 | |
---|
| 64 | /* console_initialize |
---|
| 65 | * |
---|
| 66 | * This routine initializes the console IO driver. |
---|
| 67 | * |
---|
| 68 | * Input parameters: |
---|
| 69 | * major - console device major number |
---|
| 70 | * minor - console device minor number |
---|
| 71 | * arg - pointer to optional device driver arguments |
---|
| 72 | * |
---|
| 73 | * Output parameters: NONE |
---|
| 74 | * |
---|
| 75 | * Return values: |
---|
| 76 | * rtems_device_driver status code |
---|
| 77 | */ |
---|
| 78 | |
---|
| 79 | rtems_device_driver console_initialize( |
---|
| 80 | rtems_device_major_number major, |
---|
| 81 | rtems_device_minor_number minor, |
---|
| 82 | void *arg |
---|
| 83 | ) |
---|
| 84 | { |
---|
| 85 | rtems_status_code status; |
---|
| 86 | |
---|
| 87 | status = rtems_io_register_name( |
---|
| 88 | "/dev/console", |
---|
| 89 | major, |
---|
| 90 | (rtems_device_minor_number) 0 |
---|
| 91 | ); |
---|
| 92 | |
---|
| 93 | if (status != RTEMS_SUCCESSFUL) |
---|
| 94 | rtems_fatal_error_occurred(status); |
---|
| 95 | |
---|
| 96 | #ifdef CONSOLE_USE_INTERRUPTS |
---|
| 97 | console_initialize_interrupts(); |
---|
| 98 | #endif |
---|
| 99 | |
---|
| 100 | return RTEMS_SUCCESSFUL; |
---|
| 101 | } |
---|
| 102 | |
---|
| 103 | /* console_inbyte_polled |
---|
| 104 | * |
---|
| 105 | * This routine reads a character from the UART. |
---|
| 106 | * |
---|
| 107 | * Input parameters: |
---|
| 108 | * port - port to read character from |
---|
| 109 | * |
---|
| 110 | * Output parameters: NONE |
---|
| 111 | * |
---|
| 112 | * Return values: |
---|
| 113 | * character read from UART |
---|
| 114 | */ |
---|
| 115 | |
---|
| 116 | char console_inbyte_polled( int port ) |
---|
| 117 | { |
---|
| 118 | int UStat; |
---|
| 119 | |
---|
| 120 | if ( port == 0 ) { |
---|
| 121 | while (((UStat = ERC32_MEC.UART_Status) & ERC32_MEC_UART_STATUS_DRA) == 0 ) |
---|
| 122 | if (UStat & ERC32_MEC_UART_STATUS_ERRA) { |
---|
| 123 | ERC32_MEC.UART_Status = ERC32_MEC_UART_STATUS_CLRA; |
---|
| 124 | ERC32_MEC.Control = ERC32_MEC.Control; |
---|
| 125 | } |
---|
| 126 | return (int) ERC32_MEC.UART_Channel_A; |
---|
| 127 | } |
---|
| 128 | |
---|
| 129 | while (((UStat = ERC32_MEC.UART_Status) & ERC32_MEC_UART_STATUS_DRB) == 0 ) |
---|
| 130 | if (UStat & ERC32_MEC_UART_STATUS_ERRB) { |
---|
| 131 | ERC32_MEC.UART_Status = ERC32_MEC_UART_STATUS_CLRB; |
---|
| 132 | ERC32_MEC.Control = ERC32_MEC.Control; |
---|
| 133 | } |
---|
| 134 | return (int) ERC32_MEC.UART_Channel_B; |
---|
| 135 | } |
---|
| 136 | |
---|
| 137 | |
---|
| 138 | /* console_outbyte_polled |
---|
| 139 | * |
---|
| 140 | * This routine transmits a character out. |
---|
| 141 | * |
---|
| 142 | * Input parameters: |
---|
| 143 | * port - port to transmit character to |
---|
| 144 | * ch - character to be transmitted |
---|
| 145 | * |
---|
| 146 | * Output parameters: NONE |
---|
| 147 | * |
---|
| 148 | * Return values: NONE |
---|
| 149 | */ |
---|
| 150 | |
---|
| 151 | void console_outbyte_polled( |
---|
| 152 | int port, |
---|
| 153 | char ch |
---|
| 154 | ) |
---|
| 155 | { |
---|
| 156 | if ( port == 0 ) { |
---|
| 157 | while ( (ERC32_MEC.UART_Status & ERC32_MEC_UART_STATUS_THEA) == 0 ); |
---|
| 158 | ERC32_MEC.UART_Channel_A = (int) ch; |
---|
| 159 | return; |
---|
| 160 | } |
---|
| 161 | |
---|
| 162 | while ( (ERC32_MEC.UART_Status & ERC32_MEC_UART_STATUS_THEB) == 0 ); |
---|
| 163 | ERC32_MEC.UART_Channel_B = (int) ch; |
---|
| 164 | } |
---|
| 165 | |
---|
| 166 | /* |
---|
| 167 | * Interrupt driven console IO |
---|
| 168 | */ |
---|
| 169 | |
---|
| 170 | #ifdef CONSOLE_USE_INTERRUPTS |
---|
| 171 | |
---|
| 172 | /* |
---|
| 173 | * Buffers between task and ISRs |
---|
| 174 | */ |
---|
| 175 | |
---|
| 176 | #include <ringbuf.h> |
---|
| 177 | |
---|
| 178 | Ring_buffer_t TX_Buffer[ 2 ]; |
---|
| 179 | Ring_buffer_t RX_Buffer[ 2 ]; |
---|
| 180 | boolean Is_TX_active[ 2 ]; |
---|
| 181 | |
---|
| 182 | /* |
---|
| 183 | * console_isr_a |
---|
| 184 | * |
---|
| 185 | * This routine is the console interrupt handler for Channel A. |
---|
| 186 | * |
---|
| 187 | * Input parameters: |
---|
| 188 | * vector - vector number |
---|
| 189 | * |
---|
| 190 | * Output parameters: NONE |
---|
| 191 | * |
---|
| 192 | * Return values: NONE |
---|
| 193 | */ |
---|
| 194 | |
---|
| 195 | rtems_isr console_isr_a( |
---|
| 196 | rtems_vector_number vector |
---|
| 197 | ) |
---|
| 198 | { |
---|
| 199 | char ch; |
---|
| 200 | int UStat; |
---|
| 201 | |
---|
| 202 | if ( (UStat = ERC32_MEC.UART_Status) & ERC32_MEC_UART_STATUS_DRA ) { |
---|
| 203 | if (UStat & ERC32_MEC_UART_STATUS_ERRA) { |
---|
| 204 | ERC32_MEC.UART_Status = ERC32_MEC_UART_STATUS_CLRA; |
---|
| 205 | ERC32_MEC.Control = ERC32_MEC.Control; |
---|
| 206 | } |
---|
| 207 | ch = ERC32_MEC.UART_Channel_A; |
---|
| 208 | if ( !Ring_buffer_Is_full( &RX_Buffer[ 0 ] ) ) |
---|
| 209 | Ring_buffer_Add_character( &RX_Buffer[ 0 ], ch ); |
---|
| 210 | /* else toss it */ |
---|
| 211 | } |
---|
| 212 | |
---|
| 213 | if ( ERC32_MEC.UART_Status & ERC32_MEC_UART_STATUS_THEA ) { |
---|
| 214 | if ( !Ring_buffer_Is_empty( &TX_Buffer[ 0 ] ) ) { |
---|
| 215 | Ring_buffer_Remove_character( &TX_Buffer[ 0 ], ch ); |
---|
| 216 | ERC32_MEC.UART_Channel_A = (unsigned32) ch; |
---|
| 217 | } else |
---|
| 218 | Is_TX_active[ 0 ] = FALSE; |
---|
| 219 | } |
---|
| 220 | |
---|
| 221 | ERC32_Clear_interrupt( ERC32_INTERRUPT_UART_A_RX_TX ); |
---|
| 222 | } |
---|
| 223 | |
---|
| 224 | /* |
---|
| 225 | * console_isr_b |
---|
| 226 | * |
---|
| 227 | * This routine is the console interrupt handler for Channel B. |
---|
| 228 | * |
---|
| 229 | * Input parameters: |
---|
| 230 | * vector - vector number |
---|
| 231 | * |
---|
| 232 | * Output parameters: NONE |
---|
| 233 | * |
---|
| 234 | * Return values: NONE |
---|
| 235 | */ |
---|
| 236 | |
---|
| 237 | rtems_isr console_isr_b( |
---|
| 238 | rtems_vector_number vector |
---|
| 239 | ) |
---|
| 240 | { |
---|
| 241 | char ch; |
---|
| 242 | int UStat; |
---|
| 243 | |
---|
| 244 | if ( (UStat = ERC32_MEC.UART_Status) & ERC32_MEC_UART_STATUS_DRB ) { |
---|
| 245 | if (UStat & ERC32_MEC_UART_STATUS_ERRB) { |
---|
| 246 | ERC32_MEC.UART_Status = ERC32_MEC_UART_STATUS_CLRB; |
---|
| 247 | ERC32_MEC.Control = ERC32_MEC.Control; |
---|
| 248 | } |
---|
| 249 | ch = ERC32_MEC.UART_Channel_B; |
---|
| 250 | if ( !Ring_buffer_Is_full( &RX_Buffer[ 1 ] ) ) |
---|
| 251 | Ring_buffer_Add_character( &RX_Buffer[ 1 ], ch ); |
---|
| 252 | /* else toss it */ |
---|
| 253 | } |
---|
| 254 | |
---|
| 255 | if ( ERC32_MEC.UART_Status & ERC32_MEC_UART_STATUS_THEB ) { |
---|
| 256 | if ( !Ring_buffer_Is_empty( &TX_Buffer[ 1 ] ) ) { |
---|
| 257 | Ring_buffer_Remove_character( &TX_Buffer[ 1 ], ch ); |
---|
| 258 | ERC32_MEC.UART_Channel_B = (unsigned32) ch; |
---|
| 259 | } else |
---|
| 260 | Is_TX_active[ 1 ] = FALSE; |
---|
| 261 | } |
---|
| 262 | |
---|
| 263 | ERC32_Clear_interrupt( ERC32_INTERRUPT_UART_B_RX_TX ); |
---|
| 264 | } |
---|
| 265 | |
---|
| 266 | /* |
---|
| 267 | * console_exit |
---|
| 268 | * |
---|
| 269 | * This routine allows the console to exit by masking its associated interrupt |
---|
| 270 | * vectors. |
---|
| 271 | * |
---|
| 272 | * Input parameters: NONE |
---|
| 273 | * |
---|
| 274 | * Output parameters: NONE |
---|
| 275 | * |
---|
| 276 | * Return values: NONE |
---|
| 277 | */ |
---|
| 278 | |
---|
| 279 | void console_exit() |
---|
| 280 | { |
---|
| 281 | rtems_unsigned32 port; |
---|
| 282 | rtems_unsigned32 ch; |
---|
| 283 | |
---|
| 284 | /* |
---|
| 285 | * Although the interrupts for the UART are unmasked, the PIL is set to |
---|
| 286 | * disable all external interrupts. So we might as well do this first. |
---|
| 287 | */ |
---|
| 288 | |
---|
| 289 | ERC32_Mask_interrupt( ERC32_INTERRUPT_UART_A_RX_TX ); |
---|
| 290 | ERC32_Mask_interrupt( ERC32_INTERRUPT_UART_B_RX_TX ); |
---|
| 291 | |
---|
| 292 | for ( port=0 ; port <= 1 ; port++ ) { |
---|
| 293 | while ( !Ring_buffer_Is_empty( &TX_Buffer[ port ] ) ) { |
---|
| 294 | Ring_buffer_Remove_character( &TX_Buffer[ port ], ch ); |
---|
| 295 | console_outbyte_polled( port, ch ); |
---|
| 296 | } |
---|
| 297 | } |
---|
| 298 | |
---|
| 299 | /* |
---|
| 300 | * Now wait for all the data to actually get out ... the send register |
---|
| 301 | * should be empty. |
---|
| 302 | */ |
---|
| 303 | |
---|
| 304 | while ( (ERC32_MEC.UART_Status & ERC32_MEC_UART_STATUS_THEA) != |
---|
| 305 | ERC32_MEC_UART_STATUS_THEA ); |
---|
| 306 | |
---|
| 307 | while ( (ERC32_MEC.UART_Status & ERC32_MEC_UART_STATUS_THEB) != |
---|
| 308 | ERC32_MEC_UART_STATUS_THEB ); |
---|
| 309 | |
---|
| 310 | } |
---|
| 311 | |
---|
| 312 | #define CONSOLE_UART_A_TRAP ERC32_TRAP_TYPE( ERC32_INTERRUPT_UART_A_RX_TX ) |
---|
| 313 | #define CONSOLE_UART_B_TRAP ERC32_TRAP_TYPE( ERC32_INTERRUPT_UART_B_RX_TX ) |
---|
| 314 | |
---|
| 315 | /* |
---|
| 316 | * console_initialize_interrupts |
---|
| 317 | * |
---|
| 318 | * This routine initializes the console's receive and transmit |
---|
| 319 | * ring buffers and loads the appropriate vectors to handle the interrupts. |
---|
| 320 | * |
---|
| 321 | * Input parameters: NONE |
---|
| 322 | * |
---|
| 323 | * Output parameters: NONE |
---|
| 324 | * |
---|
| 325 | * Return values: NONE |
---|
| 326 | */ |
---|
| 327 | |
---|
| 328 | #ifdef RDB_BREAK_IN |
---|
[2f93371] | 329 | extern unsigned32 trap_table[]; |
---|
[7f96eef] | 330 | #endif |
---|
| 331 | |
---|
| 332 | void console_initialize_interrupts() |
---|
| 333 | { |
---|
| 334 | Ring_buffer_Initialize( &RX_Buffer[ 0 ] ); |
---|
| 335 | Ring_buffer_Initialize( &RX_Buffer[ 1 ] ); |
---|
| 336 | |
---|
| 337 | Ring_buffer_Initialize( &TX_Buffer[ 0 ] ); |
---|
| 338 | Ring_buffer_Initialize( &TX_Buffer[ 1 ] ); |
---|
| 339 | |
---|
| 340 | Is_TX_active[ 0 ] = FALSE; |
---|
| 341 | Is_TX_active[ 1 ] = FALSE; |
---|
| 342 | |
---|
| 343 | atexit( console_exit ); |
---|
| 344 | |
---|
| 345 | set_vector( console_isr_a, CONSOLE_UART_A_TRAP, 1 ); |
---|
| 346 | #ifdef RDB_BREAK_IN |
---|
| 347 | if (trap_table[0x150/4] == 0x91d02000) |
---|
| 348 | #endif |
---|
| 349 | set_vector( console_isr_b, CONSOLE_UART_B_TRAP, 1 ); |
---|
| 350 | } |
---|
| 351 | |
---|
| 352 | /* |
---|
| 353 | * console_inbyte_interrupts |
---|
| 354 | * |
---|
| 355 | * This routine reads a character from the UART. |
---|
| 356 | * |
---|
| 357 | * Input parameters: NONE |
---|
| 358 | * |
---|
| 359 | * Output parameters: NONE |
---|
| 360 | * |
---|
| 361 | * Return values: |
---|
| 362 | * character read from UART |
---|
| 363 | */ |
---|
| 364 | |
---|
| 365 | char console_inbyte_interrupts( int port ) |
---|
| 366 | { |
---|
| 367 | char ch; |
---|
| 368 | |
---|
| 369 | while ( Ring_buffer_Is_empty( &RX_Buffer[ port ] ) ); |
---|
| 370 | |
---|
| 371 | Ring_buffer_Remove_character( &RX_Buffer[ port ], ch ); |
---|
| 372 | return ch; |
---|
| 373 | } |
---|
| 374 | |
---|
| 375 | /* |
---|
| 376 | * console_outbyte_interrupts |
---|
| 377 | * |
---|
| 378 | * This routine transmits a character out. |
---|
| 379 | * |
---|
| 380 | * Input parameters: |
---|
| 381 | * port - port to transmit character to |
---|
| 382 | * ch - character to be transmitted |
---|
| 383 | * |
---|
| 384 | * Output parameters: NONE |
---|
| 385 | * |
---|
| 386 | * Return values: NONE |
---|
| 387 | */ |
---|
| 388 | |
---|
| 389 | void console_outbyte_interrupts( |
---|
| 390 | int port, |
---|
| 391 | char ch |
---|
| 392 | ) |
---|
| 393 | { |
---|
| 394 | /* |
---|
| 395 | * If this is the first character then we need to prime the pump |
---|
| 396 | */ |
---|
| 397 | |
---|
| 398 | if ( Is_TX_active[ port ] == FALSE ) { |
---|
| 399 | Is_TX_active[ port ] = TRUE; |
---|
| 400 | console_outbyte_polled( port, ch ); |
---|
| 401 | return; |
---|
| 402 | } |
---|
| 403 | |
---|
| 404 | while ( Ring_buffer_Is_full( &TX_Buffer[ port ] ) ); |
---|
| 405 | |
---|
| 406 | Ring_buffer_Add_character( &TX_Buffer[ port ], ch ); |
---|
| 407 | } |
---|
| 408 | |
---|
| 409 | #endif /* CONSOLE_USE_INTERRUPTS */ |
---|
| 410 | |
---|
| 411 | /* |
---|
| 412 | * DEBUG_puts |
---|
| 413 | * |
---|
| 414 | * This should be safe in the event of an error. It attempts to insure |
---|
| 415 | * that no TX empty interrupts occur while it is doing polled IO. Then |
---|
| 416 | * it restores the state of that external interrupt. |
---|
| 417 | * |
---|
| 418 | * Input parameters: |
---|
| 419 | * string - pointer to debug output string |
---|
| 420 | * |
---|
| 421 | * Output parameters: NONE |
---|
| 422 | * |
---|
| 423 | * Return values: NONE |
---|
| 424 | */ |
---|
| 425 | |
---|
| 426 | void DEBUG_puts( |
---|
| 427 | char *string |
---|
| 428 | ) |
---|
| 429 | { |
---|
| 430 | char *s; |
---|
| 431 | unsigned32 old_level; |
---|
| 432 | |
---|
| 433 | ERC32_Disable_interrupt( ERC32_INTERRUPT_UART_A_RX_TX, old_level ); |
---|
| 434 | for ( s = string ; *s ; s++ ) |
---|
| 435 | console_outbyte_polled( 0, *s ); |
---|
| 436 | |
---|
| 437 | console_outbyte_polled( 0, '\r' ); |
---|
| 438 | console_outbyte_polled( 0, '\n' ); |
---|
| 439 | ERC32_Restore_interrupt( ERC32_INTERRUPT_UART_A_RX_TX, old_level ); |
---|
| 440 | } |
---|
| 441 | |
---|
| 442 | |
---|
| 443 | /* |
---|
| 444 | * console_open |
---|
| 445 | * |
---|
| 446 | * This routine is the console device driver open entry point. |
---|
| 447 | * |
---|
| 448 | * Input parameters: |
---|
| 449 | * major - console device major number |
---|
| 450 | * minor - console device minor number |
---|
| 451 | * arg - pointer to optional device driver arguments |
---|
| 452 | * |
---|
| 453 | * Output parameters: NONE |
---|
| 454 | * |
---|
| 455 | * Return values: |
---|
| 456 | * rtems_device_driver status code |
---|
| 457 | */ |
---|
| 458 | |
---|
| 459 | rtems_device_driver console_open( |
---|
| 460 | rtems_device_major_number major, |
---|
| 461 | rtems_device_minor_number minor, |
---|
| 462 | void * arg |
---|
| 463 | ) |
---|
| 464 | { |
---|
| 465 | return RTEMS_SUCCESSFUL; |
---|
| 466 | } |
---|
| 467 | |
---|
| 468 | /* |
---|
| 469 | * console_close |
---|
| 470 | * |
---|
| 471 | * This routine is the console device driver close entry point. |
---|
| 472 | * |
---|
| 473 | * Input parameters: |
---|
| 474 | * major - console device major number |
---|
| 475 | * minor - console device minor number |
---|
| 476 | * arg - pointer to optional device driver arguments |
---|
| 477 | * |
---|
| 478 | * Output parameters: NONE |
---|
| 479 | * |
---|
| 480 | * Return values: |
---|
| 481 | * rtems_device_driver status code |
---|
| 482 | */ |
---|
| 483 | |
---|
| 484 | rtems_device_driver console_close( |
---|
| 485 | rtems_device_major_number major, |
---|
| 486 | rtems_device_minor_number minor, |
---|
| 487 | void * arg |
---|
| 488 | ) |
---|
| 489 | { |
---|
| 490 | return RTEMS_SUCCESSFUL; |
---|
| 491 | } |
---|
| 492 | |
---|
| 493 | /* |
---|
| 494 | * console_read |
---|
| 495 | * |
---|
| 496 | * This routine is the console device driver read entry point. |
---|
| 497 | * |
---|
| 498 | * Input parameters: |
---|
| 499 | * major - console device major number |
---|
| 500 | * minor - console device minor number |
---|
| 501 | * arg - pointer to optional device driver arguments |
---|
| 502 | * |
---|
| 503 | * Output parameters: NONE |
---|
| 504 | * |
---|
| 505 | * Return values: |
---|
| 506 | * rtems_device_driver status code |
---|
| 507 | * |
---|
| 508 | * NOTE: Read bytes from the serial port. We only have stdin. |
---|
| 509 | */ |
---|
| 510 | |
---|
| 511 | rtems_device_driver console_read( |
---|
| 512 | rtems_device_major_number major, |
---|
| 513 | rtems_device_minor_number minor, |
---|
| 514 | void * arg |
---|
| 515 | ) |
---|
| 516 | { |
---|
| 517 | rtems_libio_rw_args_t *rw_args; |
---|
| 518 | char *buffer; |
---|
| 519 | int maximum; |
---|
| 520 | int count = 0; |
---|
| 521 | |
---|
| 522 | rw_args = (rtems_libio_rw_args_t *) arg; |
---|
| 523 | |
---|
| 524 | buffer = rw_args->buffer; |
---|
| 525 | maximum = rw_args->count; |
---|
| 526 | |
---|
| 527 | for (count = 0; count < maximum; count++) { |
---|
| 528 | buffer[ count ] = INBYTE( minor ); |
---|
| 529 | if (buffer[ count ] == '\n' || buffer[ count ] == '\r') { |
---|
| 530 | buffer[ count++ ] = '\n'; |
---|
| 531 | break; |
---|
| 532 | } |
---|
| 533 | } |
---|
| 534 | |
---|
| 535 | rw_args->bytes_moved = count; |
---|
| 536 | return (count >= 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED; |
---|
| 537 | } |
---|
| 538 | |
---|
| 539 | /* |
---|
| 540 | * console_write |
---|
| 541 | * |
---|
| 542 | * This routine is the console device driver write entry point. |
---|
| 543 | * |
---|
| 544 | * Input parameters: |
---|
| 545 | * major - console device major number |
---|
| 546 | * minor - console device minor number |
---|
| 547 | * arg - pointer to optional device driver arguments |
---|
| 548 | * |
---|
| 549 | * Output parameters: NONE |
---|
| 550 | * |
---|
| 551 | * Return values: |
---|
| 552 | * rtems_device_driver status code |
---|
| 553 | * |
---|
| 554 | * NOTE: Write bytes to the serial port. Stdout and stderr are the same. |
---|
| 555 | */ |
---|
| 556 | |
---|
| 557 | rtems_device_driver console_write( |
---|
| 558 | rtems_device_major_number major, |
---|
| 559 | rtems_device_minor_number minor, |
---|
| 560 | void * arg |
---|
| 561 | ) |
---|
| 562 | { |
---|
| 563 | int count; |
---|
| 564 | int maximum; |
---|
| 565 | rtems_libio_rw_args_t *rw_args; |
---|
| 566 | char *buffer; |
---|
| 567 | |
---|
| 568 | rw_args = (rtems_libio_rw_args_t *) arg; |
---|
| 569 | |
---|
| 570 | buffer = rw_args->buffer; |
---|
| 571 | maximum = rw_args->count; |
---|
| 572 | |
---|
| 573 | for (count = 0; count < maximum; count++) { |
---|
| 574 | OUTBYTE( minor, buffer[ count ] ); |
---|
| 575 | if ( buffer[ count ] == '\n') { |
---|
| 576 | OUTBYTE( minor, '\r'); |
---|
| 577 | } |
---|
| 578 | } |
---|
| 579 | |
---|
| 580 | rw_args->bytes_moved = maximum; |
---|
| 581 | return RTEMS_SUCCESSFUL; |
---|
| 582 | } |
---|
| 583 | |
---|
| 584 | /* |
---|
| 585 | * console_control |
---|
| 586 | * |
---|
| 587 | * This routine is the console device driver control entry point. |
---|
| 588 | * |
---|
| 589 | * Input parameters: |
---|
| 590 | * major - console device major number |
---|
| 591 | * minor - console device minor number |
---|
| 592 | * arg - pointer to optional device driver arguments |
---|
| 593 | * |
---|
| 594 | * Output parameters: NONE |
---|
| 595 | * |
---|
| 596 | * Return values: |
---|
| 597 | * rtems_device_driver status code |
---|
| 598 | */ |
---|
| 599 | |
---|
| 600 | rtems_device_driver console_control( |
---|
| 601 | rtems_device_major_number major, |
---|
| 602 | rtems_device_minor_number minor, |
---|
| 603 | void * arg |
---|
| 604 | ) |
---|
| 605 | { |
---|
| 606 | return RTEMS_SUCCESSFUL; |
---|
| 607 | } |
---|
| 608 | |
---|