1 /* This file is part of the program GDB, the GNU debugger.
3 Copyright (C) 1998 Free Software Foundation, Inc.
4 Contributed by Cygnus Solutions.
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
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
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.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #include "dv-sockser.h"
30 mn103ser - mn103002 serial devices 0, 1 and 2.
35 Implements the mn103002 serial interfaces as described in the
41 reg = <serial-addr> <serial-size>
49 /* The serial devices' registers' address block */
51 struct mn103ser_block {
58 enum serial_register_types {
78 /* Access dv-sockser state */
79 extern char* sockser_addr;
80 #define USE_SOCKSER_P (sockser_addr != NULL)
83 #define NR_SERIAL_DEVS 3
84 #define SIO_STAT_RRDY 0x0010
86 typedef struct _mn10300_serial {
87 unsigned16 status, control;
88 unsigned8 txb, rxb, intmode;
89 struct hw_event *event;
95 struct mn103ser_block block;
96 mn10300_serial device[NR_SERIAL_DEVS];
97 unsigned8 serial2_timer_reg;
98 do_hw_poll_read_method *reader;
101 /* output port ID's */
114 static const struct hw_port_descriptor mn103ser_ports[] = {
116 { "serial-0-receive", SERIAL0_RECEIVE, 0, output_port, },
117 { "serial-1-receive", SERIAL1_RECEIVE, 0, output_port, },
118 { "serial-2-receive", SERIAL2_RECEIVE, 0, output_port, },
119 { "serial-0-transmit", SERIAL0_SEND, 0, output_port, },
120 { "serial-1-transmit", SERIAL1_SEND, 0, output_port, },
121 { "serial-2-transmit", SERIAL2_SEND, 0, output_port, },
128 /* Finish off the partially created hw device. Attach our local
129 callbacks. Wire up our port names etc */
131 static hw_io_read_buffer_method mn103ser_io_read_buffer;
132 static hw_io_write_buffer_method mn103ser_io_write_buffer;
135 attach_mn103ser_regs (struct hw *me,
136 struct mn103ser *serial)
138 unsigned_word attach_address;
140 unsigned attach_size;
141 reg_property_spec reg;
143 if (hw_find_property (me, "reg") == NULL)
144 hw_abort (me, "Missing \"reg\" property");
146 if (!hw_find_reg_array_property (me, "reg", 0, ®))
147 hw_abort (me, "\"reg\" property must contain three addr/size entries");
148 hw_unit_address_to_attach_address (hw_parent (me),
153 serial->block.base = attach_address;
154 hw_unit_size_to_attach_size (hw_parent (me),
157 serial->block.bound = attach_address + (attach_size - 1);
158 hw_attach_address (hw_parent (me),
160 attach_space, attach_address, attach_size,
165 mn103ser_finish (struct hw *me)
167 struct mn103ser *serial;
170 serial = HW_ZALLOC (me, struct mn103ser);
171 set_hw_data (me, serial);
172 set_hw_io_read_buffer (me, mn103ser_io_read_buffer);
173 set_hw_io_write_buffer (me, mn103ser_io_write_buffer);
174 set_hw_ports (me, mn103ser_ports);
176 /* Attach ourself to our parent bus */
177 attach_mn103ser_regs (me, serial);
179 /* If so configured, enable polled input */
180 if (hw_find_property (me, "poll?") != NULL
181 && hw_find_boolean_property (me, "poll?"))
183 serial->reader = sim_io_poll_read;
187 serial->reader = sim_io_read;
190 /* Initialize the serial device registers. */
191 for ( i=0; i<NR_SERIAL_DEVS; ++i )
193 serial->device[i].txb = 0;
194 serial->device[i].rxb = 0;
195 serial->device[i].status = 0;
196 serial->device[i].control = 0;
197 serial->device[i].intmode = 0;
198 serial->device[i].event = NULL;
206 decode_addr (struct hw *me,
207 struct mn103ser *serial,
208 unsigned_word address)
210 unsigned_word offset;
211 offset = address - serial->block.base;
214 case 0x00: return SC0CTR;
215 case 0x04: return SC0ICR;
216 case 0x08: return SC0TXB;
217 case 0x09: return SC0RXB;
218 case 0x0C: return SC0STR;
219 case 0x10: return SC1CTR;
220 case 0x14: return SC1ICR;
221 case 0x18: return SC1TXB;
222 case 0x19: return SC1RXB;
223 case 0x1C: return SC1STR;
224 case 0x20: return SC2CTR;
225 case 0x24: return SC2ICR;
226 case 0x28: return SC2TXB;
227 case 0x29: return SC2RXB;
228 case 0x2C: return SC2STR;
229 case 0x2D: return SC2TIM;
232 hw_abort (me, "bad address");
239 do_polling_event (struct hw *me,
242 struct mn103ser *serial = hw_data(me);
243 int serial_reg = (int) data;
250 rd = dv_sockser_read (hw_system (me));
258 count = HW_IO_NOT_READY;
263 count = do_hw_poll_read (me, serial->reader,
264 0/*STDIN*/, &c, sizeof(c));
270 case HW_IO_NOT_READY:
272 serial->device[serial_reg].rxb = 0;
273 serial->device[serial_reg].status &= ~SIO_STAT_RRDY;
276 serial->device[serial_reg].rxb = c;
277 serial->device[serial_reg].status |= SIO_STAT_RRDY;
278 hw_port_event (me, serial_reg+SERIAL0_RECEIVE, 1);
281 /* Schedule next polling event */
282 serial->device[serial_reg].event
283 = hw_event_queue_schedule (me, 1000,
284 do_polling_event, (void *)serial_reg);
289 read_control_reg (struct hw *me,
290 struct mn103ser *serial,
291 unsigned_word serial_reg,
295 /* really allow 1 byte read, too */
298 *(unsigned16 *)dest = H2LE_2 (serial->device[serial_reg].control);
302 hw_abort (me, "bad read size of %d bytes from SC%dCTR.", nr_bytes,
309 read_intmode_reg (struct hw *me,
310 struct mn103ser *serial,
311 unsigned_word serial_reg,
317 *(unsigned8 *)dest = serial->device[serial_reg].intmode;
321 hw_abort (me, "bad read size of %d bytes from SC%dICR.", nr_bytes,
328 read_txb (struct hw *me,
329 struct mn103ser *serial,
330 unsigned_word serial_reg,
336 *(unsigned8 *)dest = serial->device[serial_reg].txb;
340 hw_abort (me, "bad read size of %d bytes from SC%dTXB.", nr_bytes,
347 read_rxb (struct hw *me,
348 struct mn103ser *serial,
349 unsigned_word serial_reg,
355 *(unsigned8 *)dest = serial->device[serial_reg].rxb;
356 /* Reception buffer is now empty. */
357 serial->device[serial_reg].status &= ~SIO_STAT_RRDY;
361 hw_abort (me, "bad read size of %d bytes from SC%dRXB.", nr_bytes,
368 read_status_reg (struct hw *me,
369 struct mn103ser *serial,
370 unsigned_word serial_reg,
377 if ( (serial->device[serial_reg].status & SIO_STAT_RRDY) == 0 )
380 /* Kill current poll event */
381 if ( NULL != serial->device[serial_reg].event )
383 hw_event_queue_deschedule (me, serial->device[serial_reg].event);
384 serial->device[serial_reg].event = NULL;
390 rd = dv_sockser_read (hw_system (me));
398 count = HW_IO_NOT_READY;
403 count = do_hw_poll_read (me, serial->reader,
404 0/*STDIN*/, &c, sizeof(c));
409 case HW_IO_NOT_READY:
411 serial->device[serial_reg].rxb = 0;
412 serial->device[serial_reg].status &= ~SIO_STAT_RRDY;
415 serial->device[serial_reg].rxb = c;
416 serial->device[serial_reg].status |= SIO_STAT_RRDY;
417 hw_port_event (me, serial_reg+SERIAL0_RECEIVE, 1);
420 /* schedule polling event */
421 serial->device[serial_reg].event
422 = hw_event_queue_schedule (me, 1000,
429 *(unsigned8 *)dest = (unsigned8)serial->device[serial_reg].status;
431 else if ( nr_bytes == 2 && serial_reg != SC2STR )
433 *(unsigned16 *)dest = H2LE_2 (serial->device[serial_reg].status);
437 hw_abort (me, "bad read size of %d bytes from SC%dSTR.", nr_bytes,
444 read_serial2_timer_reg (struct hw *me,
445 struct mn103ser *serial,
451 * (unsigned8 *) dest = (unsigned8) serial->serial2_timer_reg;
455 hw_abort (me, "bad read size of %d bytes to SC2TIM.", nr_bytes);
461 mn103ser_io_read_buffer (struct hw *me,
467 struct mn103ser *serial = hw_data (me);
468 enum serial_register_types serial_reg;
469 HW_TRACE ((me, "read 0x%08lx %d", (long) base, (int) nr_bytes));
471 serial_reg = decode_addr (me, serial, base);
474 /* control registers */
478 read_control_reg(me, serial, serial_reg-SC0CTR, dest, nr_bytes);
479 HW_TRACE ((me, "read - ctrl reg%d has 0x%x\n", serial_reg-SC0CTR,
480 *(unsigned8 *)dest));
483 /* interrupt mode registers */
487 read_intmode_reg(me, serial, serial_reg-SC0ICR, dest, nr_bytes);
488 HW_TRACE ((me, "read - intmode reg%d has 0x%x\n", serial_reg-SC0ICR,
489 *(unsigned8 *)dest));
492 /* transmission buffers */
496 read_txb(me, serial, serial_reg-SC0TXB, dest, nr_bytes);
497 HW_TRACE ((me, "read - txb%d has %c\n", serial_reg-SC0TXB,
501 /* reception buffers */
505 read_rxb(me, serial, serial_reg-SC0RXB, dest, nr_bytes);
506 HW_TRACE ((me, "read - rxb%d has %c\n", serial_reg-SC0RXB,
510 /* status registers */
514 read_status_reg(me, serial, serial_reg-SC0STR, dest, nr_bytes);
515 HW_TRACE ((me, "read - status reg%d has 0x%x\n", serial_reg-SC0STR,
516 *(unsigned8 *)dest));
520 read_serial2_timer_reg(me, serial, dest, nr_bytes);
521 HW_TRACE ((me, "read - serial2 timer reg %d\n", *(unsigned8 *)dest));
525 hw_abort(me, "invalid address");
533 write_control_reg (struct hw *me,
534 struct mn103ser *serial,
535 unsigned_word serial_reg,
539 unsigned16 val = LE2H_2 (*(unsigned16 *)source);
541 /* really allow 1 byte write, too */
544 if ( serial_reg == 2 && (val & 0x0C04) != 0 )
546 hw_abort(me, "Cannot write to read-only bits of SC2CTR.");
550 serial->device[serial_reg].control = val;
555 hw_abort (me, "bad read size of %d bytes from SC%dSTR.", nr_bytes,
562 write_intmode_reg (struct hw *me,
563 struct mn103ser *serial,
564 unsigned_word serial_reg,
568 unsigned8 val = *(unsigned8 *)source;
572 /* Check for attempt to write to read-only bits of register. */
573 if ( ( serial_reg == 2 && (val & 0xCA) != 0 )
574 || ( serial_reg != 2 && (val & 0x4A) != 0 ) )
576 hw_abort(me, "Cannot write to read-only bits of SC%dICR.",
581 serial->device[serial_reg].intmode = val;
586 hw_abort (me, "bad write size of %d bytes to SC%dICR.", nr_bytes,
593 write_txb (struct hw *me,
594 struct mn103ser *serial,
595 unsigned_word serial_reg,
601 serial->device[serial_reg].txb = *(unsigned8 *)source;
605 dv_sockser_write(hw_system (me), * (char*) source);
609 sim_io_write_stdout(hw_system (me), (char *)source, 1);
610 sim_io_flush_stdout(hw_system (me));
613 hw_port_event (me, serial_reg+SERIAL0_SEND, 1);
617 hw_abort (me, "bad write size of %d bytes to SC%dTXB.", nr_bytes,
624 write_serial2_timer_reg (struct hw *me,
625 struct mn103ser *serial,
631 serial->serial2_timer_reg = *(unsigned8 *)source;
635 hw_abort (me, "bad write size of %d bytes to SC2TIM.", nr_bytes);
641 mn103ser_io_write_buffer (struct hw *me,
647 struct mn103ser *serial = hw_data (me);
648 enum serial_register_types serial_reg;
649 HW_TRACE ((me, "write 0x%08lx %d", (long) base, (int) nr_bytes));
651 serial_reg = decode_addr (me, serial, base);
654 /* control registers */
658 HW_TRACE ((me, "write - ctrl reg%d has 0x%x, nrbytes=%d.\n",
659 serial_reg-SC0CTR, *(unsigned8 *)source, nr_bytes));
660 write_control_reg(me, serial, serial_reg-SC0CTR, source, nr_bytes);
663 /* interrupt mode registers */
667 HW_TRACE ((me, "write - intmode reg%d has 0x%x, nrbytes=%d.\n",
668 serial_reg-SC0ICR, *(unsigned8 *)source, nr_bytes));
669 write_intmode_reg(me, serial, serial_reg-SC0ICR, source, nr_bytes);
672 /* transmission buffers */
676 HW_TRACE ((me, "write - txb%d has %c, nrbytes=%d.\n",
677 serial_reg-SC0TXB, *(char *)source, nr_bytes));
678 write_txb(me, serial, serial_reg-SC0TXB, source, nr_bytes);
681 /* reception buffers */
685 hw_abort(me, "Cannot write to reception buffer.");
688 /* status registers */
692 hw_abort(me, "Cannot write to status register.");
696 HW_TRACE ((me, "read - serial2 timer reg %d (nrbytes=%d)\n",
697 *(unsigned8 *)source, nr_bytes));
698 write_serial2_timer_reg(me, serial, source, nr_bytes);
702 hw_abort(me, "invalid address");
709 const struct hw_descriptor dv_mn103ser_descriptor[] = {
710 { "mn103ser", mn103ser_finish, },