source: rtems/c/src/lib/libbsp/m68k/mcf5206elite/console/console.c @ 30ef900

5
Last change on this file since 30ef900 was 30ef900, checked in by Joel Sherrill <joel@…>, on 03/29/16 at 18:10:51

m68k/mcf5206elite: Remove include of <rtems/console.h> from <bsp.h> and fix warnings

  • Property mode set to 100644
File size: 10.4 KB
Line 
1/*
2 * Console driver for Motorola MCF5206E UART modules
3 */
4
5/*
6 * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia
7 * Author: Victor V. Vengerov <vvv@oktet.ru>
8 *
9 *  COPYRIGHT (c) 1989-1998.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.rtems.org/license/LICENSE.
15 */
16
17#include <termios.h>
18#include <bsp.h>
19#include <rtems/libio.h>
20#include <rtems/console.h>
21#include "mcf5206/mcf5206e.h"
22#include "mcf5206/mcfuart.h"
23
24/* Descriptor structures for two on-chip UART channels */
25static mcfuart uart[2];
26
27/* Console operations mode:
28 *     0 - raw (non-termios) polled input/output
29 *     1 - termios-based polled input/output
30 *     2 - termios-based interrupt-driven input/output
31 */
32int console_mode = 2;
33#define CONSOLE_MODE_RAW  (0)
34#define CONSOLE_MODE_POLL (1)
35#define CONSOLE_MODE_INT  (2)
36
37/* Wrapper functions for MCF UART generic driver */
38
39/* console_poll_read --
40 *     wrapper for poll read function
41 *
42 * PARAMETERS:
43 *     minor - minor device number
44 *
45 * RETURNS:
46 *     character code readed from UART, or -1 if there is no characters
47 *     available
48 */
49static int
50console_poll_read(int minor)
51{
52  return mcfuart_poll_read(&uart[minor]);
53}
54
55/* console_interrupt_write --
56 *     wrapper for interrupt write function
57 *
58 * PARAMETERS:
59 *     minor - minor device number
60 *     buf - output buffer
61 *     len - output buffer length
62 *
63 * RETURNS:
64 *     result code
65 */
66static ssize_t
67console_interrupt_write(int minor, const char *buf, size_t len)
68{
69  return mcfuart_interrupt_write(&uart[minor], buf, len);
70}
71
72/* console_poll_write --
73 *     wrapper for polling mode write function
74 *
75 * PARAMETERS:
76 *     minor - minor device number
77 *     buf - output buffer
78 *     len - output buffer length
79 *
80 * RETURNS:
81 *     result code
82 */
83static ssize_t
84console_poll_write(int minor, const char *buf, size_t len)
85{
86  return mcfuart_poll_write(&uart[minor], buf, len);
87}
88
89/* console_set_attributes --
90 *     wrapper for hardware-dependent termios attributes setting
91 *
92 * PARAMETERS:
93 *     minor - minor device number
94 *     t - pointer to the termios structure
95 *
96 * RETURNS:
97 *     result code
98 */
99static int
100console_set_attributes(int minor, const struct termios *t)
101{
102  return mcfuart_set_attributes(&uart[minor], t);
103}
104
105/* console_stop_remote_tx --
106 *     wrapper for stopping data flow from remote party.
107 *
108 * PARAMETERS:
109 *     minor - minor device number
110 *
111 * RETURNS:
112 *     result code
113 */
114static int
115console_stop_remote_tx(int minor)
116{
117  if (minor < sizeof(uart)/sizeof(uart[0]))
118    return mcfuart_stop_remote_tx(&uart[minor]);
119  else
120    return RTEMS_INVALID_NUMBER;
121}
122
123/* console_start_remote_tx --
124 *     wrapper for resuming data flow from remote party.
125 *
126 * PARAMETERS:
127 *     minor - minor device number
128 *
129 */
130static int
131console_start_remote_tx(int minor)
132{
133  if (minor < sizeof(uart)/sizeof(uart[0]))
134    return mcfuart_start_remote_tx(&uart[minor]);
135  else
136    return RTEMS_INVALID_NUMBER;
137}
138
139/* console_first_open --
140 *     wrapper for UART controller initialization functions
141 *
142 * PARAMETERS:
143 *     major - major device number
144 *     minor - minor device number
145 *     arg - libio device open argument
146 *
147 * RETURNS:
148 *     error code
149 */
150static int
151console_first_open(int major, int minor, void *arg)
152{
153  rtems_libio_open_close_args_t *args = arg;
154  rtems_status_code sc;
155  uint8_t         intvec;
156
157  switch (minor) {
158    case 0: intvec = BSP_INTVEC_UART1; break;
159    case 1: intvec = BSP_INTVEC_UART2; break;
160    default:
161      return RTEMS_INVALID_NUMBER;
162  }
163
164  if (console_mode != CONSOLE_MODE_INT) {
165    intvec = 0;
166  }
167
168  sc = mcfuart_init(
169    &uart[minor],          /* uart */
170    args->iop->data1,      /* tty */
171    intvec,                /* interrupt vector number */
172    minor+1);
173
174  if (sc == RTEMS_SUCCESSFUL)
175    sc = mcfuart_reset(&uart[minor]);
176
177  return sc;
178}
179
180/* console_last_close --
181 *     wrapper for UART controller close function
182 *
183 * PARAMETERS:
184 *     major - major device number
185 *     minor - minor device number
186 *     arg - libio device close argument
187 *
188 * RETURNS:
189 *     error code
190 */
191static int
192console_last_close(int major, int minor, void *arg)
193{
194  return mcfuart_disable(&uart[minor]);
195}
196
197/* console_initialize --
198 *     This routine initializes the console IO drivers and register devices
199 *     in RTEMS I/O system.
200 *
201 * PARAMETERS:
202 *     major - major console device number
203 *     minor - minor console device number (not used)
204 *     arg - device initialize argument
205 *
206 * RETURNS:
207 *     RTEMS error code (RTEMS_SUCCESSFUL if device initialized successfuly)
208 */
209rtems_device_driver console_initialize(
210  rtems_device_major_number major,
211  rtems_device_minor_number minor,
212  void *arg)
213{
214  rtems_status_code status;
215
216  /*
217   * Set up TERMIOS
218   */
219  if (console_mode != CONSOLE_MODE_RAW)
220      rtems_termios_initialize ();
221
222  /*
223   * Register the devices
224   */
225  status = rtems_io_register_name ("/dev/console", major, 0);
226  if (status != RTEMS_SUCCESSFUL)
227    rtems_fatal_error_occurred (status);
228
229  status = rtems_io_register_name ("/dev/aux", major, 1);
230  if (status != RTEMS_SUCCESSFUL)
231    rtems_fatal_error_occurred (status);
232
233  if (console_mode == CONSOLE_MODE_RAW) {
234    rtems_status_code sc;
235    sc = mcfuart_init(&uart[0],              /* uart */
236                      NULL,                  /* tty */
237                      0,                     /* interrupt vector number */
238                      1);                    /* UART channel number */
239
240    if (sc == RTEMS_SUCCESSFUL)
241        sc = mcfuart_reset(&uart[0]);
242
243    sc = mcfuart_init(&uart[1],              /* uart */
244                      NULL,                  /* tty */
245                      0,                     /* interrupt vector number */
246                      2);                    /* UART channel number */
247
248    if (sc == RTEMS_SUCCESSFUL)
249      sc = mcfuart_reset(&uart[1]);
250    return sc;
251  }
252
253  return RTEMS_SUCCESSFUL;
254}
255
256/* console_open --
257 *     Open console device driver. Pass appropriate termios callback
258 *     functions to termios library.
259 *
260 * PARAMETERS:
261 *     major - major device number for console devices
262 *     minor - minor device number for console
263 *     arg - device opening argument
264 *
265 * RETURNS:
266 *     RTEMS error code
267 */
268rtems_device_driver
269console_open(rtems_device_major_number major,
270             rtems_device_minor_number minor,
271             void *arg)
272{
273  static const rtems_termios_callbacks intr_callbacks = {
274    console_first_open,        /* firstOpen */
275    console_last_close,        /* lastClose */
276    NULL,                      /* pollRead */
277    console_interrupt_write,   /* write */
278    console_set_attributes,    /* setAttributes */
279    console_stop_remote_tx,    /* stopRemoteTx */
280    console_start_remote_tx,   /* startRemoteTx */
281    1                          /* outputUsesInterrupts */
282  };
283  static const rtems_termios_callbacks poll_callbacks = {
284    console_first_open,        /* firstOpen */
285    console_last_close,        /* lastClose */
286    console_poll_read,         /* pollRead */
287    console_poll_write,        /* write */
288    console_set_attributes,    /* setAttributes */
289    console_stop_remote_tx,    /* stopRemoteTx */
290    console_start_remote_tx,   /* startRemoteTx */
291    0                          /* outputUsesInterrupts */
292  };
293
294  switch (console_mode) {
295    case CONSOLE_MODE_RAW:
296      return RTEMS_SUCCESSFUL;
297
298    case CONSOLE_MODE_INT:
299      return rtems_termios_open(major, minor, arg, &intr_callbacks);
300
301      case CONSOLE_MODE_POLL:
302        return rtems_termios_open(major, minor, arg, &poll_callbacks);
303
304      default:
305        rtems_fatal_error_occurred(0xC07A1310);
306  }
307  return RTEMS_INTERNAL_ERROR;
308}
309
310/* console_close --
311 *     Close console device.
312 *
313 * PARAMETERS:
314 *     major - major device number for console devices
315 *     minor - minor device number for console
316 *     arg - device close argument
317 *
318 * RETURNS:
319 *     RTEMS error code
320 */
321rtems_device_driver
322console_close(rtems_device_major_number major,
323              rtems_device_minor_number minor,
324              void *arg)
325{
326  if (console_mode != CONSOLE_MODE_RAW)
327    return rtems_termios_close (arg);
328  else
329    return RTEMS_SUCCESSFUL;
330}
331
332/* console_read --
333 *     Read from the console device
334 *
335 * PARAMETERS:
336 *     major - major device number for console devices
337 *     minor - minor device number for console
338 *     arg - device read argument
339 *
340 * RETURNS:
341 *     RTEMS error code
342 */
343rtems_device_driver
344console_read(rtems_device_major_number major,
345             rtems_device_minor_number minor,
346             void *arg)
347{
348  if (console_mode != CONSOLE_MODE_RAW) {
349    return rtems_termios_read (arg);
350  } else {
351    rtems_libio_rw_args_t *argp = arg;
352    char *buf = argp->buffer;
353    int count = argp->count;
354    int n = 0;
355    int c;
356
357    while (n < count) {
358      do {
359        c = mcfuart_poll_read(&uart[minor]);
360      } while (c == -1);
361      if (c == '\r')
362        c = '\n';
363      *(buf++) = c;
364      n++;
365      if (c == '\n')
366        break;
367    }
368    argp->bytes_moved = n;
369    return RTEMS_SUCCESSFUL;
370  }
371}
372
373/* console_write --
374 *     Write to the console device
375 *
376 * PARAMETERS:
377 *     major - major device number for console devices
378 *     minor - minor device number for console
379 *     arg - device write argument
380 *
381 * RETURNS:
382 *     RTEMS error code
383 */
384rtems_device_driver
385console_write(rtems_device_major_number major,
386              rtems_device_minor_number minor,
387              void *arg
388)
389{
390  if (console_mode != CONSOLE_MODE_RAW) {
391    return rtems_termios_write (arg);
392  } else {
393    rtems_libio_rw_args_t *argp = arg;
394    char cr = '\r';
395    char *buf = argp->buffer;
396    int count = argp->count;
397    int i;
398
399    for (i = 0; i < count; i++) {
400        if (*buf == '\n')
401            mcfuart_poll_write(&uart[minor], &cr, 1);
402        mcfuart_poll_write(&uart[minor], buf, 1);
403        buf++;
404    }
405    argp->bytes_moved = count;
406    return RTEMS_SUCCESSFUL;
407  }
408}
409
410/* console_control --
411 *     Handle console device I/O control (IOCTL)
412 *
413 * PARAMETERS:
414 *     major - major device number for console devices
415 *     minor - minor device number for console
416 *     arg - device ioctl argument
417 *
418 * RETURNS:
419 *     RTEMS error code
420 */
421rtems_device_driver
422console_control(rtems_device_major_number major,
423                rtems_device_minor_number minor,
424                void *arg)
425{
426  if (console_mode != CONSOLE_MODE_RAW) {
427    return rtems_termios_ioctl (arg);
428  } else {
429    return RTEMS_SUCCESSFUL;
430  }
431}
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