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c906108c SS |
1 | /* This file is part of the program GDB, the GNU debugger. |
2 | ||
9b254dd1 | 3 | Copyright (C) 1998, 2007, 2008 Free Software Foundation, Inc. |
c906108c SS |
4 | Contributed by Cygnus Solutions. |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
4744ac1b | 8 | the Free Software Foundation; either version 3 of the License, or |
c906108c | 9 | (at your option) any later version. |
4744ac1b | 10 | |
c906108c SS |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
4744ac1b | 15 | |
c906108c | 16 | You should have received a copy of the GNU General Public License |
4744ac1b | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
18 | |
19 | */ | |
20 | ||
21 | #include "sim-main.h" | |
22 | #include "hw-main.h" | |
23 | #include "dv-sockser.h" | |
24 | ||
25 | ||
26 | /* DEVICE | |
27 | ||
28 | ||
29 | mn103ser - mn103002 serial devices 0, 1 and 2. | |
30 | ||
31 | ||
32 | DESCRIPTION | |
33 | ||
34 | Implements the mn103002 serial interfaces as described in the | |
35 | mn103002 user guide. | |
36 | ||
37 | ||
38 | PROPERTIES | |
39 | ||
40 | reg = <serial-addr> <serial-size> | |
41 | ||
42 | ||
43 | BUGS | |
44 | ||
45 | */ | |
46 | ||
47 | ||
48 | /* The serial devices' registers' address block */ | |
49 | ||
50 | struct mn103ser_block { | |
51 | unsigned_word base; | |
52 | unsigned_word bound; | |
53 | }; | |
54 | ||
55 | ||
56 | ||
57 | enum serial_register_types { | |
58 | SC0CTR, | |
59 | SC1CTR, | |
60 | SC2CTR, | |
61 | SC0ICR, | |
62 | SC1ICR, | |
63 | SC2ICR, | |
64 | SC0TXB, | |
65 | SC1TXB, | |
66 | SC2TXB, | |
67 | SC0RXB, | |
68 | SC1RXB, | |
69 | SC2RXB, | |
70 | SC0STR, | |
71 | SC1STR, | |
72 | SC2STR, | |
73 | SC2TIM, | |
74 | }; | |
75 | ||
76 | ||
77 | /* Access dv-sockser state */ | |
78 | extern char* sockser_addr; | |
79 | #define USE_SOCKSER_P (sockser_addr != NULL) | |
80 | ||
81 | ||
82 | #define NR_SERIAL_DEVS 3 | |
83 | #define SIO_STAT_RRDY 0x0010 | |
84 | ||
85 | typedef struct _mn10300_serial { | |
86 | unsigned16 status, control; | |
87 | unsigned8 txb, rxb, intmode; | |
88 | struct hw_event *event; | |
89 | } mn10300_serial; | |
90 | ||
91 | ||
92 | ||
93 | struct mn103ser { | |
94 | struct mn103ser_block block; | |
95 | mn10300_serial device[NR_SERIAL_DEVS]; | |
96 | unsigned8 serial2_timer_reg; | |
97 | do_hw_poll_read_method *reader; | |
98 | }; | |
99 | ||
100 | /* output port ID's */ | |
101 | ||
102 | /* for mn103002 */ | |
103 | enum { | |
104 | SERIAL0_RECEIVE, | |
105 | SERIAL1_RECEIVE, | |
106 | SERIAL2_RECEIVE, | |
107 | SERIAL0_SEND, | |
108 | SERIAL1_SEND, | |
109 | SERIAL2_SEND, | |
110 | }; | |
111 | ||
112 | ||
113 | static const struct hw_port_descriptor mn103ser_ports[] = { | |
114 | ||
115 | { "serial-0-receive", SERIAL0_RECEIVE, 0, output_port, }, | |
116 | { "serial-1-receive", SERIAL1_RECEIVE, 0, output_port, }, | |
117 | { "serial-2-receive", SERIAL2_RECEIVE, 0, output_port, }, | |
118 | { "serial-0-transmit", SERIAL0_SEND, 0, output_port, }, | |
119 | { "serial-1-transmit", SERIAL1_SEND, 0, output_port, }, | |
120 | { "serial-2-transmit", SERIAL2_SEND, 0, output_port, }, | |
121 | ||
122 | { NULL, }, | |
123 | }; | |
124 | ||
125 | ||
126 | ||
127 | /* Finish off the partially created hw device. Attach our local | |
128 | callbacks. Wire up our port names etc */ | |
129 | ||
130 | static hw_io_read_buffer_method mn103ser_io_read_buffer; | |
131 | static hw_io_write_buffer_method mn103ser_io_write_buffer; | |
132 | ||
133 | static void | |
134 | attach_mn103ser_regs (struct hw *me, | |
135 | struct mn103ser *serial) | |
136 | { | |
137 | unsigned_word attach_address; | |
138 | int attach_space; | |
139 | unsigned attach_size; | |
140 | reg_property_spec reg; | |
141 | ||
142 | if (hw_find_property (me, "reg") == NULL) | |
143 | hw_abort (me, "Missing \"reg\" property"); | |
144 | ||
145 | if (!hw_find_reg_array_property (me, "reg", 0, ®)) | |
146 | hw_abort (me, "\"reg\" property must contain three addr/size entries"); | |
147 | hw_unit_address_to_attach_address (hw_parent (me), | |
148 | ®.address, | |
149 | &attach_space, | |
150 | &attach_address, | |
151 | me); | |
152 | serial->block.base = attach_address; | |
153 | hw_unit_size_to_attach_size (hw_parent (me), | |
154 | ®.size, | |
155 | &attach_size, me); | |
156 | serial->block.bound = attach_address + (attach_size - 1); | |
157 | hw_attach_address (hw_parent (me), | |
158 | 0, | |
159 | attach_space, attach_address, attach_size, | |
160 | me); | |
161 | } | |
162 | ||
163 | static void | |
164 | mn103ser_finish (struct hw *me) | |
165 | { | |
166 | struct mn103ser *serial; | |
167 | int i; | |
168 | ||
169 | serial = HW_ZALLOC (me, struct mn103ser); | |
170 | set_hw_data (me, serial); | |
171 | set_hw_io_read_buffer (me, mn103ser_io_read_buffer); | |
172 | set_hw_io_write_buffer (me, mn103ser_io_write_buffer); | |
173 | set_hw_ports (me, mn103ser_ports); | |
174 | ||
175 | /* Attach ourself to our parent bus */ | |
176 | attach_mn103ser_regs (me, serial); | |
177 | ||
178 | /* If so configured, enable polled input */ | |
179 | if (hw_find_property (me, "poll?") != NULL | |
180 | && hw_find_boolean_property (me, "poll?")) | |
181 | { | |
182 | serial->reader = sim_io_poll_read; | |
183 | } | |
184 | else | |
185 | { | |
186 | serial->reader = sim_io_read; | |
187 | } | |
188 | ||
189 | /* Initialize the serial device registers. */ | |
190 | for ( i=0; i<NR_SERIAL_DEVS; ++i ) | |
191 | { | |
192 | serial->device[i].txb = 0; | |
193 | serial->device[i].rxb = 0; | |
194 | serial->device[i].status = 0; | |
195 | serial->device[i].control = 0; | |
196 | serial->device[i].intmode = 0; | |
197 | serial->device[i].event = NULL; | |
198 | } | |
199 | } | |
200 | ||
201 | ||
202 | /* read and write */ | |
203 | ||
204 | static int | |
205 | decode_addr (struct hw *me, | |
206 | struct mn103ser *serial, | |
207 | unsigned_word address) | |
208 | { | |
209 | unsigned_word offset; | |
210 | offset = address - serial->block.base; | |
211 | switch (offset) | |
212 | { | |
213 | case 0x00: return SC0CTR; | |
214 | case 0x04: return SC0ICR; | |
215 | case 0x08: return SC0TXB; | |
216 | case 0x09: return SC0RXB; | |
217 | case 0x0C: return SC0STR; | |
218 | case 0x10: return SC1CTR; | |
219 | case 0x14: return SC1ICR; | |
220 | case 0x18: return SC1TXB; | |
221 | case 0x19: return SC1RXB; | |
222 | case 0x1C: return SC1STR; | |
223 | case 0x20: return SC2CTR; | |
224 | case 0x24: return SC2ICR; | |
225 | case 0x28: return SC2TXB; | |
226 | case 0x29: return SC2RXB; | |
227 | case 0x2C: return SC2STR; | |
228 | case 0x2D: return SC2TIM; | |
229 | default: | |
230 | { | |
231 | hw_abort (me, "bad address"); | |
232 | return -1; | |
233 | } | |
234 | } | |
235 | } | |
236 | ||
237 | static void | |
238 | do_polling_event (struct hw *me, | |
239 | void *data) | |
240 | { | |
241 | struct mn103ser *serial = hw_data(me); | |
e158f0a0 | 242 | long serial_reg = (long) data; |
c906108c SS |
243 | char c; |
244 | int count; | |
245 | ||
246 | if(USE_SOCKSER_P) | |
247 | { | |
248 | int rd; | |
249 | rd = dv_sockser_read (hw_system (me)); | |
250 | if(rd != -1) | |
251 | { | |
252 | c = (char) rd; | |
253 | count = 1; | |
254 | } | |
255 | else | |
256 | { | |
257 | count = HW_IO_NOT_READY; | |
258 | } | |
259 | } | |
260 | else | |
261 | { | |
262 | count = do_hw_poll_read (me, serial->reader, | |
263 | 0/*STDIN*/, &c, sizeof(c)); | |
264 | } | |
265 | ||
266 | ||
267 | switch (count) | |
268 | { | |
269 | case HW_IO_NOT_READY: | |
270 | case HW_IO_EOF: | |
271 | serial->device[serial_reg].rxb = 0; | |
272 | serial->device[serial_reg].status &= ~SIO_STAT_RRDY; | |
273 | break; | |
274 | default: | |
275 | serial->device[serial_reg].rxb = c; | |
276 | serial->device[serial_reg].status |= SIO_STAT_RRDY; | |
277 | hw_port_event (me, serial_reg+SERIAL0_RECEIVE, 1); | |
278 | } | |
279 | ||
280 | /* Schedule next polling event */ | |
281 | serial->device[serial_reg].event | |
282 | = hw_event_queue_schedule (me, 1000, | |
283 | do_polling_event, (void *)serial_reg); | |
284 | ||
285 | } | |
286 | ||
287 | static void | |
288 | read_control_reg (struct hw *me, | |
289 | struct mn103ser *serial, | |
290 | unsigned_word serial_reg, | |
291 | void *dest, | |
292 | unsigned nr_bytes) | |
293 | { | |
294 | /* really allow 1 byte read, too */ | |
295 | if ( nr_bytes == 2 ) | |
296 | { | |
297 | *(unsigned16 *)dest = H2LE_2 (serial->device[serial_reg].control); | |
298 | } | |
299 | else | |
300 | { | |
301 | hw_abort (me, "bad read size of %d bytes from SC%dCTR.", nr_bytes, | |
302 | serial_reg); | |
303 | } | |
304 | } | |
305 | ||
306 | ||
307 | static void | |
308 | read_intmode_reg (struct hw *me, | |
309 | struct mn103ser *serial, | |
310 | unsigned_word serial_reg, | |
311 | void *dest, | |
312 | unsigned nr_bytes) | |
313 | { | |
314 | if ( nr_bytes == 1 ) | |
315 | { | |
316 | *(unsigned8 *)dest = serial->device[serial_reg].intmode; | |
317 | } | |
318 | else | |
319 | { | |
320 | hw_abort (me, "bad read size of %d bytes from SC%dICR.", nr_bytes, | |
321 | serial_reg); | |
322 | } | |
323 | } | |
324 | ||
325 | ||
326 | static void | |
327 | read_txb (struct hw *me, | |
328 | struct mn103ser *serial, | |
329 | unsigned_word serial_reg, | |
330 | void *dest, | |
331 | unsigned nr_bytes) | |
332 | { | |
333 | if ( nr_bytes == 1 ) | |
334 | { | |
335 | *(unsigned8 *)dest = serial->device[serial_reg].txb; | |
336 | } | |
337 | else | |
338 | { | |
339 | hw_abort (me, "bad read size of %d bytes from SC%dTXB.", nr_bytes, | |
340 | serial_reg); | |
341 | } | |
342 | } | |
343 | ||
344 | ||
345 | static void | |
346 | read_rxb (struct hw *me, | |
347 | struct mn103ser *serial, | |
348 | unsigned_word serial_reg, | |
349 | void *dest, | |
350 | unsigned nr_bytes) | |
351 | { | |
352 | if ( nr_bytes == 1 ) | |
353 | { | |
354 | *(unsigned8 *)dest = serial->device[serial_reg].rxb; | |
355 | /* Reception buffer is now empty. */ | |
356 | serial->device[serial_reg].status &= ~SIO_STAT_RRDY; | |
357 | } | |
358 | else | |
359 | { | |
360 | hw_abort (me, "bad read size of %d bytes from SC%dRXB.", nr_bytes, | |
361 | serial_reg); | |
362 | } | |
363 | } | |
364 | ||
365 | ||
366 | static void | |
367 | read_status_reg (struct hw *me, | |
368 | struct mn103ser *serial, | |
369 | unsigned_word serial_reg, | |
370 | void *dest, | |
371 | unsigned nr_bytes) | |
372 | { | |
373 | char c; | |
374 | int count; | |
375 | ||
376 | if ( (serial->device[serial_reg].status & SIO_STAT_RRDY) == 0 ) | |
377 | { | |
378 | /* FIFO is empty */ | |
379 | /* Kill current poll event */ | |
380 | if ( NULL != serial->device[serial_reg].event ) | |
381 | { | |
382 | hw_event_queue_deschedule (me, serial->device[serial_reg].event); | |
383 | serial->device[serial_reg].event = NULL; | |
384 | } | |
385 | ||
386 | if(USE_SOCKSER_P) | |
387 | { | |
388 | int rd; | |
389 | rd = dv_sockser_read (hw_system (me)); | |
390 | if(rd != -1) | |
391 | { | |
392 | c = (char) rd; | |
393 | count = 1; | |
394 | } | |
395 | else | |
396 | { | |
397 | count = HW_IO_NOT_READY; | |
398 | } | |
399 | } | |
400 | else | |
401 | { | |
402 | count = do_hw_poll_read (me, serial->reader, | |
403 | 0/*STDIN*/, &c, sizeof(c)); | |
404 | } | |
405 | ||
406 | switch (count) | |
407 | { | |
408 | case HW_IO_NOT_READY: | |
409 | case HW_IO_EOF: | |
410 | serial->device[serial_reg].rxb = 0; | |
411 | serial->device[serial_reg].status &= ~SIO_STAT_RRDY; | |
412 | break; | |
413 | default: | |
414 | serial->device[serial_reg].rxb = c; | |
415 | serial->device[serial_reg].status |= SIO_STAT_RRDY; | |
416 | hw_port_event (me, serial_reg+SERIAL0_RECEIVE, 1); | |
417 | } | |
418 | ||
419 | /* schedule polling event */ | |
420 | serial->device[serial_reg].event | |
421 | = hw_event_queue_schedule (me, 1000, | |
422 | do_polling_event, | |
e158f0a0 | 423 | (void *) (long) serial_reg); |
c906108c SS |
424 | } |
425 | ||
426 | if ( nr_bytes == 1 ) | |
427 | { | |
428 | *(unsigned8 *)dest = (unsigned8)serial->device[serial_reg].status; | |
429 | } | |
430 | else if ( nr_bytes == 2 && serial_reg != SC2STR ) | |
431 | { | |
432 | *(unsigned16 *)dest = H2LE_2 (serial->device[serial_reg].status); | |
433 | } | |
434 | else | |
435 | { | |
436 | hw_abort (me, "bad read size of %d bytes from SC%dSTR.", nr_bytes, | |
437 | serial_reg); | |
438 | } | |
439 | } | |
440 | ||
441 | ||
442 | static void | |
443 | read_serial2_timer_reg (struct hw *me, | |
444 | struct mn103ser *serial, | |
445 | void *dest, | |
446 | unsigned nr_bytes) | |
447 | { | |
448 | if ( nr_bytes == 1 ) | |
449 | { | |
450 | * (unsigned8 *) dest = (unsigned8) serial->serial2_timer_reg; | |
451 | } | |
452 | else | |
453 | { | |
454 | hw_abort (me, "bad read size of %d bytes to SC2TIM.", nr_bytes); | |
455 | } | |
456 | } | |
457 | ||
458 | ||
459 | static unsigned | |
460 | mn103ser_io_read_buffer (struct hw *me, | |
461 | void *dest, | |
462 | int space, | |
463 | unsigned_word base, | |
464 | unsigned nr_bytes) | |
465 | { | |
466 | struct mn103ser *serial = hw_data (me); | |
467 | enum serial_register_types serial_reg; | |
468 | HW_TRACE ((me, "read 0x%08lx %d", (long) base, (int) nr_bytes)); | |
469 | ||
470 | serial_reg = decode_addr (me, serial, base); | |
471 | switch (serial_reg) | |
472 | { | |
473 | /* control registers */ | |
474 | case SC0CTR: | |
475 | case SC1CTR: | |
476 | case SC2CTR: | |
477 | read_control_reg(me, serial, serial_reg-SC0CTR, dest, nr_bytes); | |
478 | HW_TRACE ((me, "read - ctrl reg%d has 0x%x\n", serial_reg-SC0CTR, | |
479 | *(unsigned8 *)dest)); | |
480 | break; | |
481 | ||
482 | /* interrupt mode registers */ | |
483 | case SC0ICR: | |
484 | case SC1ICR: | |
485 | case SC2ICR: | |
486 | read_intmode_reg(me, serial, serial_reg-SC0ICR, dest, nr_bytes); | |
487 | HW_TRACE ((me, "read - intmode reg%d has 0x%x\n", serial_reg-SC0ICR, | |
488 | *(unsigned8 *)dest)); | |
489 | break; | |
490 | ||
491 | /* transmission buffers */ | |
492 | case SC0TXB: | |
493 | case SC1TXB: | |
494 | case SC2TXB: | |
495 | read_txb(me, serial, serial_reg-SC0TXB, dest, nr_bytes); | |
496 | HW_TRACE ((me, "read - txb%d has %c\n", serial_reg-SC0TXB, | |
497 | *(char *)dest)); | |
498 | break; | |
499 | ||
500 | /* reception buffers */ | |
501 | case SC0RXB: | |
502 | case SC1RXB: | |
503 | case SC2RXB: | |
504 | read_rxb(me, serial, serial_reg-SC0RXB, dest, nr_bytes); | |
505 | HW_TRACE ((me, "read - rxb%d has %c\n", serial_reg-SC0RXB, | |
506 | *(char *)dest)); | |
507 | break; | |
508 | ||
509 | /* status registers */ | |
510 | case SC0STR: | |
511 | case SC1STR: | |
512 | case SC2STR: | |
513 | read_status_reg(me, serial, serial_reg-SC0STR, dest, nr_bytes); | |
514 | HW_TRACE ((me, "read - status reg%d has 0x%x\n", serial_reg-SC0STR, | |
515 | *(unsigned8 *)dest)); | |
516 | break; | |
517 | ||
518 | case SC2TIM: | |
519 | read_serial2_timer_reg(me, serial, dest, nr_bytes); | |
520 | HW_TRACE ((me, "read - serial2 timer reg %d\n", *(unsigned8 *)dest)); | |
521 | break; | |
522 | ||
523 | default: | |
524 | hw_abort(me, "invalid address"); | |
525 | } | |
526 | ||
527 | return nr_bytes; | |
528 | } | |
529 | ||
530 | ||
531 | static void | |
532 | write_control_reg (struct hw *me, | |
533 | struct mn103ser *serial, | |
534 | unsigned_word serial_reg, | |
535 | const void *source, | |
536 | unsigned nr_bytes) | |
537 | { | |
538 | unsigned16 val = LE2H_2 (*(unsigned16 *)source); | |
539 | ||
540 | /* really allow 1 byte write, too */ | |
541 | if ( nr_bytes == 2 ) | |
542 | { | |
543 | if ( serial_reg == 2 && (val & 0x0C04) != 0 ) | |
544 | { | |
545 | hw_abort(me, "Cannot write to read-only bits of SC2CTR."); | |
546 | } | |
547 | else | |
548 | { | |
549 | serial->device[serial_reg].control = val; | |
550 | } | |
551 | } | |
552 | else | |
553 | { | |
554 | hw_abort (me, "bad read size of %d bytes from SC%dSTR.", nr_bytes, | |
555 | serial_reg); | |
556 | } | |
557 | } | |
558 | ||
559 | ||
560 | static void | |
561 | write_intmode_reg (struct hw *me, | |
562 | struct mn103ser *serial, | |
563 | unsigned_word serial_reg, | |
564 | const void *source, | |
565 | unsigned nr_bytes) | |
566 | { | |
567 | unsigned8 val = *(unsigned8 *)source; | |
568 | ||
569 | if ( nr_bytes == 1 ) | |
570 | { | |
571 | /* Check for attempt to write to read-only bits of register. */ | |
572 | if ( ( serial_reg == 2 && (val & 0xCA) != 0 ) | |
573 | || ( serial_reg != 2 && (val & 0x4A) != 0 ) ) | |
574 | { | |
575 | hw_abort(me, "Cannot write to read-only bits of SC%dICR.", | |
576 | serial_reg); | |
577 | } | |
578 | else | |
579 | { | |
580 | serial->device[serial_reg].intmode = val; | |
581 | } | |
582 | } | |
583 | else | |
584 | { | |
585 | hw_abort (me, "bad write size of %d bytes to SC%dICR.", nr_bytes, | |
586 | serial_reg); | |
587 | } | |
588 | } | |
589 | ||
590 | ||
591 | static void | |
592 | write_txb (struct hw *me, | |
593 | struct mn103ser *serial, | |
594 | unsigned_word serial_reg, | |
595 | const void *source, | |
596 | unsigned nr_bytes) | |
597 | { | |
598 | if ( nr_bytes == 1 ) | |
599 | { | |
600 | serial->device[serial_reg].txb = *(unsigned8 *)source; | |
601 | ||
602 | if(USE_SOCKSER_P) | |
603 | { | |
604 | dv_sockser_write(hw_system (me), * (char*) source); | |
605 | } | |
606 | else | |
607 | { | |
608 | sim_io_write_stdout(hw_system (me), (char *)source, 1); | |
609 | sim_io_flush_stdout(hw_system (me)); | |
610 | } | |
611 | ||
612 | hw_port_event (me, serial_reg+SERIAL0_SEND, 1); | |
613 | } | |
614 | else | |
615 | { | |
616 | hw_abort (me, "bad write size of %d bytes to SC%dTXB.", nr_bytes, | |
617 | serial_reg); | |
618 | } | |
619 | } | |
620 | ||
621 | ||
622 | static void | |
623 | write_serial2_timer_reg (struct hw *me, | |
624 | struct mn103ser *serial, | |
625 | const void *source, | |
626 | unsigned nr_bytes) | |
627 | { | |
628 | if ( nr_bytes == 1 ) | |
629 | { | |
630 | serial->serial2_timer_reg = *(unsigned8 *)source; | |
631 | } | |
632 | else | |
633 | { | |
634 | hw_abort (me, "bad write size of %d bytes to SC2TIM.", nr_bytes); | |
635 | } | |
636 | } | |
637 | ||
638 | ||
639 | static unsigned | |
640 | mn103ser_io_write_buffer (struct hw *me, | |
641 | const void *source, | |
642 | int space, | |
643 | unsigned_word base, | |
644 | unsigned nr_bytes) | |
645 | { | |
646 | struct mn103ser *serial = hw_data (me); | |
647 | enum serial_register_types serial_reg; | |
648 | HW_TRACE ((me, "write 0x%08lx %d", (long) base, (int) nr_bytes)); | |
649 | ||
650 | serial_reg = decode_addr (me, serial, base); | |
651 | switch (serial_reg) | |
652 | { | |
653 | /* control registers */ | |
654 | case SC0CTR: | |
655 | case SC1CTR: | |
656 | case SC2CTR: | |
657 | HW_TRACE ((me, "write - ctrl reg%d has 0x%x, nrbytes=%d.\n", | |
658 | serial_reg-SC0CTR, *(unsigned8 *)source, nr_bytes)); | |
659 | write_control_reg(me, serial, serial_reg-SC0CTR, source, nr_bytes); | |
660 | break; | |
661 | ||
662 | /* interrupt mode registers */ | |
663 | case SC0ICR: | |
664 | case SC1ICR: | |
665 | case SC2ICR: | |
666 | HW_TRACE ((me, "write - intmode reg%d has 0x%x, nrbytes=%d.\n", | |
667 | serial_reg-SC0ICR, *(unsigned8 *)source, nr_bytes)); | |
668 | write_intmode_reg(me, serial, serial_reg-SC0ICR, source, nr_bytes); | |
669 | break; | |
670 | ||
671 | /* transmission buffers */ | |
672 | case SC0TXB: | |
673 | case SC1TXB: | |
674 | case SC2TXB: | |
675 | HW_TRACE ((me, "write - txb%d has %c, nrbytes=%d.\n", | |
676 | serial_reg-SC0TXB, *(char *)source, nr_bytes)); | |
677 | write_txb(me, serial, serial_reg-SC0TXB, source, nr_bytes); | |
678 | break; | |
679 | ||
680 | /* reception buffers */ | |
681 | case SC0RXB: | |
682 | case SC1RXB: | |
683 | case SC2RXB: | |
684 | hw_abort(me, "Cannot write to reception buffer."); | |
685 | break; | |
686 | ||
687 | /* status registers */ | |
688 | case SC0STR: | |
689 | case SC1STR: | |
690 | case SC2STR: | |
691 | hw_abort(me, "Cannot write to status register."); | |
692 | break; | |
693 | ||
694 | case SC2TIM: | |
695 | HW_TRACE ((me, "read - serial2 timer reg %d (nrbytes=%d)\n", | |
696 | *(unsigned8 *)source, nr_bytes)); | |
697 | write_serial2_timer_reg(me, serial, source, nr_bytes); | |
698 | break; | |
699 | ||
700 | default: | |
701 | hw_abort(me, "invalid address"); | |
702 | } | |
703 | ||
704 | return nr_bytes; | |
705 | } | |
706 | ||
707 | ||
708 | const struct hw_descriptor dv_mn103ser_descriptor[] = { | |
709 | { "mn103ser", mn103ser_finish, }, | |
710 | { NULL }, | |
711 | }; |