1 /* This file is part of the program GDB, the GNU debugger.
3 Copyright (C) 1998, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
5 Contributed by Cygnus Solutions.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
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18 along with this program. If not, see <http://www.gnu.org/licenses/>.
28 mn103iop - mn103002 I/O ports 0-3.
33 Implements the mn103002 i/o ports as described in the mn103002 user guide.
38 reg = <ioport-addr> <ioport-size> ...
46 /* The I/O ports' registers' address block */
48 struct mn103iop_block {
55 enum io_port_register_types {
87 typedef struct _mn10300_ioport {
88 unsigned8 output, output_mode, control, pin;
89 struct hw_event *event;
95 struct mn103iop_block block[NR_BLOCKS];
96 mn10300_ioport port[NR_PORTS];
101 /* Finish off the partially created hw device. Attach our local
102 callbacks. Wire up our port names etc */
104 static hw_io_read_buffer_method mn103iop_io_read_buffer;
105 static hw_io_write_buffer_method mn103iop_io_write_buffer;
108 attach_mn103iop_regs (struct hw *me,
109 struct mn103iop *io_port)
112 unsigned_word attach_address;
114 unsigned attach_size;
115 reg_property_spec reg;
117 if (hw_find_property (me, "reg") == NULL)
118 hw_abort (me, "Missing \"reg\" property");
120 for (i=0; i < NR_BLOCKS; ++i )
122 if (!hw_find_reg_array_property (me, "reg", i, ®))
123 hw_abort (me, "\"reg\" property must contain five addr/size entries");
124 hw_unit_address_to_attach_address (hw_parent (me),
129 io_port->block[i].base = attach_address;
130 hw_unit_size_to_attach_size (hw_parent (me),
133 io_port->block[i].bound = attach_address + (attach_size - 1);
134 hw_attach_address (hw_parent (me),
136 attach_space, attach_address, attach_size,
142 mn103iop_finish (struct hw *me)
144 struct mn103iop *io_port;
147 io_port = HW_ZALLOC (me, struct mn103iop);
148 set_hw_data (me, io_port);
149 set_hw_io_read_buffer (me, mn103iop_io_read_buffer);
150 set_hw_io_write_buffer (me, mn103iop_io_write_buffer);
152 /* Attach ourself to our parent bus */
153 attach_mn103iop_regs (me, io_port);
155 /* Initialize the i/o port registers. */
156 for ( i=0; i<NR_PORTS; ++i )
158 io_port->port[i].output = 0;
159 io_port->port[i].output_mode = 0;
160 io_port->port[i].control = 0;
161 io_port->port[i].pin = 0;
163 io_port->port[2].output_mode = 0xff;
165 io_port->p4ss = 0x0f;
172 decode_addr (struct hw *me,
173 struct mn103iop *io_port,
174 unsigned_word address)
176 unsigned_word offset;
177 offset = address - io_port->block[0].base;
180 case 0x00: return P0OUT;
181 case 0x01: return P1OUT;
182 case 0x04: return P2OUT;
183 case 0x05: return P3OUT;
184 case 0x20: return P0MD;
185 case 0x21: return P1MD;
186 case 0x24: return P2MD;
187 case 0x25: return P3MD;
188 case 0x44: return P2SS;
189 case 0x48: return P4SS;
190 case 0x60: return P0DIR;
191 case 0x61: return P1DIR;
192 case 0x64: return P2DIR;
193 case 0x65: return P3DIR;
194 case 0x80: return P0IN;
195 case 0x81: return P1IN;
196 case 0x84: return P2IN;
197 case 0x85: return P3IN;
200 hw_abort (me, "bad address");
208 read_output_reg (struct hw *me,
209 struct mn103iop *io_port,
210 unsigned_word io_port_reg,
216 *(unsigned8 *)dest = io_port->port[io_port_reg].output;
220 hw_abort (me, "bad read size of %d bytes from P%dOUT.", nr_bytes,
227 read_output_mode_reg (struct hw *me,
228 struct mn103iop *io_port,
229 unsigned_word io_port_reg,
235 /* check if there are fields which can't be written and
236 take appropriate action depending what bits are set */
237 *(unsigned8 *)dest = io_port->port[io_port_reg].output_mode;
241 hw_abort (me, "bad read size of %d bytes to P%dMD.", nr_bytes,
248 read_control_reg (struct hw *me,
249 struct mn103iop *io_port,
250 unsigned_word io_port_reg,
256 *(unsigned8 *)dest = io_port->port[io_port_reg].control;
260 hw_abort (me, "bad read size of %d bytes to P%dDIR.", nr_bytes,
267 read_pin_reg (struct hw *me,
268 struct mn103iop *io_port,
269 unsigned_word io_port_reg,
275 *(unsigned8 *)dest = io_port->port[io_port_reg].pin;
279 hw_abort (me, "bad read size of %d bytes to P%dIN.", nr_bytes,
286 read_dedicated_control_reg (struct hw *me,
287 struct mn103iop *io_port,
288 unsigned_word io_port_reg,
294 /* select on io_port_reg: */
295 if ( io_port_reg == P2SS )
297 *(unsigned8 *)dest = io_port->p2ss;
301 *(unsigned8 *)dest = io_port->p4ss;
306 hw_abort (me, "bad read size of %d bytes to PSS.", nr_bytes);
312 mn103iop_io_read_buffer (struct hw *me,
318 struct mn103iop *io_port = hw_data (me);
319 enum io_port_register_types io_port_reg;
320 HW_TRACE ((me, "read 0x%08lx %d", (long) base, (int) nr_bytes));
322 io_port_reg = decode_addr (me, io_port, base);
325 /* Port output registers */
330 read_output_reg(me, io_port, io_port_reg-P0OUT, dest, nr_bytes);
333 /* Port output mode registers */
338 read_output_mode_reg(me, io_port, io_port_reg-P0MD, dest, nr_bytes);
341 /* Port control registers */
346 read_control_reg(me, io_port, io_port_reg-P0DIR, dest, nr_bytes);
349 /* Port pin registers */
353 read_pin_reg(me, io_port, io_port_reg-P0IN, dest, nr_bytes);
358 read_dedicated_control_reg(me, io_port, io_port_reg, dest, nr_bytes);
362 hw_abort(me, "invalid address");
370 write_output_reg (struct hw *me,
371 struct mn103iop *io_port,
372 unsigned_word io_port_reg,
376 unsigned8 buf = *(unsigned8 *)source;
379 if ( io_port_reg == 3 && (buf & 0xfc) != 0 )
381 hw_abort(me, "Cannot write to read-only bits of P3OUT.");
385 io_port->port[io_port_reg].output = buf;
390 hw_abort (me, "bad read size of %d bytes from P%dOUT.", nr_bytes,
397 write_output_mode_reg (struct hw *me,
398 struct mn103iop *io_port,
399 unsigned_word io_port_reg,
403 unsigned8 buf = *(unsigned8 *)source;
406 /* check if there are fields which can't be written and
407 take appropriate action depending what bits are set */
408 if ( ( io_port_reg == 3 && (buf & 0xfc) != 0 )
409 || ( (io_port_reg == 0 || io_port_reg == 1) && (buf & 0xfe) != 0 ) )
411 hw_abort(me, "Cannot write to read-only bits of output mode register.");
415 io_port->port[io_port_reg].output_mode = buf;
420 hw_abort (me, "bad write size of %d bytes to P%dMD.", nr_bytes,
427 write_control_reg (struct hw *me,
428 struct mn103iop *io_port,
429 unsigned_word io_port_reg,
433 unsigned8 buf = *(unsigned8 *)source;
436 if ( io_port_reg == 3 && (buf & 0xfc) != 0 )
438 hw_abort(me, "Cannot write to read-only bits of P3DIR.");
442 io_port->port[io_port_reg].control = buf;
447 hw_abort (me, "bad write size of %d bytes to P%dDIR.", nr_bytes,
454 write_dedicated_control_reg (struct hw *me,
455 struct mn103iop *io_port,
456 unsigned_word io_port_reg,
460 unsigned8 buf = *(unsigned8 *)source;
463 /* select on io_port_reg: */
464 if ( io_port_reg == P2SS )
466 if ( (buf & 0xfc) != 0 )
468 hw_abort(me, "Cannot write to read-only bits in p2ss.");
477 if ( (buf & 0xf0) != 0 )
479 hw_abort(me, "Cannot write to read-only bits in p4ss.");
489 hw_abort (me, "bad write size of %d bytes to PSS.", nr_bytes);
495 mn103iop_io_write_buffer (struct hw *me,
501 struct mn103iop *io_port = hw_data (me);
502 enum io_port_register_types io_port_reg;
503 HW_TRACE ((me, "write 0x%08lx %d", (long) base, (int) nr_bytes));
505 io_port_reg = decode_addr (me, io_port, base);
508 /* Port output registers */
513 write_output_reg(me, io_port, io_port_reg-P0OUT, source, nr_bytes);
516 /* Port output mode registers */
521 write_output_mode_reg(me, io_port, io_port_reg-P0MD, source, nr_bytes);
524 /* Port control registers */
529 write_control_reg(me, io_port, io_port_reg-P0DIR, source, nr_bytes);
532 /* Port pin registers */
536 hw_abort(me, "Cannot write to pin register.");
541 write_dedicated_control_reg(me, io_port, io_port_reg, source, nr_bytes);
545 hw_abort(me, "invalid address");
552 const struct hw_descriptor dv_mn103iop_descriptor[] = {
553 { "mn103iop", mn103iop_finish, },