/[gxemul]/trunk/src/devices/lk201.c
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Contents of /trunk/src/devices/lk201.c

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Revision 42 - (show annotations)
Mon Oct 8 16:22:32 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 10357 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1613 2007/06/15 20:11:26 debug Exp $
20070501	Continuing a little on m88k disassembly (control registers,
		more instructions).
		Adding a dummy mvme88k machine mode.
20070502	Re-adding MIPS load/store alignment exceptions.
20070503	Implementing more of the M88K disassembly code.
20070504	Adding disassembly of some more M88K load/store instructions.
		Implementing some relatively simple M88K instructions (br.n,
		xor[.u] imm, and[.u] imm).
20070505	Implementing M88K three-register and, or, xor, and jmp[.n],
		bsr[.n] including function call trace stuff.
		Applying a patch from Bruce M. Simpson which implements the
		SYSCON_BOARD_CPU_CLOCK_FREQ_ID object of the syscon call in
		the yamon PROM emulation.
20070506	Implementing M88K bb0[.n] and bb1[.n], and skeletons for
		ldcr and stcr (although no control regs are implemented yet).
20070509	Found and fixed the bug which caused Linux for QEMU_MIPS to
		stop working in 0.4.5.1: It was a faulty change to the MIPS
		'sc' and 'scd' instructions I made while going through gcc -W
		warnings on 20070428.
20070510	Updating the Linux/QEMU_MIPS section in guestoses.html to
		use mips-test-0.2.tar.gz instead of 0.1.
		A big thank you to Miod Vallat for sending me M88K manuals.
		Implementing more M88K instructions (addu, subu, div[u], mulu,
		ext[u], clr, set, cmp).
20070511	Fixing bugs in the M88K "and" and "and.u" instructions (found
		by comparing against the manual).
		Implementing more M88K instructions (mask[.u], mak, bcnd (auto-
		generated)) and some more control register details.
		Cleanup: Removing the experimental AVR emulation mode and
		corresponding devices; AVR emulation wasn't really meaningful.
		Implementing autogeneration of most M88K loads/stores. The
		rectangle drawing demo (with -O0) for M88K runs :-)
		Beginning on M88K exception handling.
		More M88K instructions: tb0, tb1, rte, sub, jsr[.n].
		Adding some skeleton MVME PROM ("BUG") emulation.
20070512	Fixing a bug in the M88K cmp instruction.
		Adding the M88K lda (scaled register) instruction.
		Fixing bugs in 64-bit (32-bit pairs) M88K loads/stores.
		Removing the unused tick_hz stuff from the machine struct.
		Implementing the M88K xmem instruction. OpenBSD/mvme88k gets
		far enough to display the Copyright banner :-)
		Implementing subu.co (guess), addu.co, addu.ci, ff0, and ff1.
		Adding a dev_mvme187, for MVME187-specific devices/registers.
		OpenBSD/mvme88k prints more boot messages. :)
20070515	Continuing on MVME187 emulation (adding more devices, beginning
		on the CMMUs, etc).
		Adding the M88K and.c, xor.c, and or.c instructions, and making
		sure that mul, div, etc cause exceptions if executed when SFD1
		is disabled.
20070517	Continuing on M88K and MVME187 emulation in general; moving
		the CMMU registers to the CPU struct, separating dev_pcc2 from
		dev_mvme187, and beginning on memory_m88k.c (BATC and PATC).
		Fixing a bug in 64-bit (32-bit pairs) M88K fast stores.
		Implementing the clock part of dev_mk48txx.
		Implementing the M88K fstcr and xcr instructions.
		Implementing m88k_cpu_tlbdump().
		Beginning on the implementation of a separate address space
		for M88K .usr loads/stores.
20070520	Removing the non-working (skeleton) Sandpoint, SonyNEWS, SHARK
		Dnard, and Zaurus machine modes.
		Experimenting with dyntrans to_be_translated read-ahead. It
		seems to give a very small performance increase for MIPS
		emulation, but a large performance degradation for SuperH. Hm.
20070522	Disabling correct SuperH ITLB emulation; it does not seem to be
		necessary in order to let SH4 guest OSes run, and it slows down
		userspace code.
		Implementing "samepage" branches for SuperH emulation, and some
		other minor speed hacks.
20070525	Continuing on M88K memory-related stuff: exceptions, memory
		transaction register contents, etc.
		Implementing the M88K subu.ci instruction.
		Removing the non-working (skeleton) Iyonix machine mode.
		OpenBSD/mvme88k reaches userland :-), starts executing
		/sbin/init's instructions, and issues a few syscalls, before
		crashing.
20070526	Fixing bugs in dev_mk48txx, so that OpenBSD/mvme88k detects
		the correct time-of-day.
		Implementing a generic IRQ controller for the test machines
		(dev_irqc), similar to a proposed patch from Petr Stepan.
		Experimenting some more with translation read-ahead.
		Adding an "expect" script for automated OpenBSD/landisk
		install regression/performance tests.
20070527	Adding a dummy mmEye (SH3) machine mode skeleton.
		FINALLY found the strange M88K bug I have been hunting: I had
		not emulated the SNIP value for exceptions occurring in
		branch delay slots correctly.
		Implementing correct exceptions for 64-bit M88K loads/stores.
		Address to symbol lookups are now disabled when M88K is
		running in usermode (because usermode addresses don't have
		anything to do with supervisor addresses).
20070531	Removing the mmEye machine mode skeleton.
20070604	Some minor code cleanup.
20070605	Moving src/useremul.c into a subdir (src/useremul/), and
		cleaning up some more legacy constructs.
		Adding -Wstrict-aliasing and -fstrict-aliasing detection to
		the configure script.
20070606	Adding a check for broken GCC on Solaris to the configure
		script. (GCC 3.4.3 on Solaris cannot handle static variables
		which are initialized to 0 or NULL. :-/)
		Removing the old (non-working) ARC emulation modes: NEC RD94,
		R94, R96, and R98, and the last traces of Olivetti M700 and
		Deskstation Tyne.
		Removing the non-working skeleton WDSC device (dev_wdsc).
20070607	Thinking about how to use the host's cc + ld at runtime to
		generate native code. (See experiments/native_cc_ld_test.i
		for an example.)
20070608	Adding a program counter sampling timer, which could be useful
		for native code generation experiments.
		The KN02_CSR_NRMMOD bit in the DECstation 5000/200 (KN02) CSR
		should always be set, to allow a 5000/200 PROM to boot.
20070609	Moving out breakpoint details from the machine struct into
		a helper struct, and removing the limit on max nr of
		breakpoints.
20070610	Moving out tick functions into a helper struct as well (which
		also gets rid of the max limit).
20070612	FINALLY figured out why Debian/DECstation stopped working when
		translation read-ahead was enabled: in src/memory_rw.c, the
		call to invalidate_code_translation was made also if the
		memory access was an instruction load (if the page was mapped
		as writable); it shouldn't be called in that case.
20070613	Implementing some more MIPS32/64 revision 2 instructions: di,
		ei, ext, dext, dextm, dextu, and ins.
20070614	Implementing an instruction combination for the NetBSD/arm
		idle loop (making the host not use any cpu if NetBSD/arm
		inside the emulator is not using any cpu).
		Increasing the nr of ARM VPH entries from 128 to 384.
20070615	Removing the ENABLE_arch stuff from the configure script, so
		that all included architectures are included in both release
		and development builds.
		Moving memory related helper functions from misc.c to memory.c.
		Adding preliminary instructions for netbooting NetBSD/pmppc to
		guestoses.html; it doesn't work yet, there are weird timeouts.
		Beginning a total rewrite of the userland emulation modes
		(removing all emulation modes, beginning from scratch with
		NetBSD/MIPS and FreeBSD/Alpha only).
20070616	After fixing a bug in the DEC21143 NIC (the TDSTAT_OWN bit was
		only cleared for the last segment when transmitting, not all
		segments), NetBSD/pmppc boots with root-on-nfs without the
		timeouts. Updating guestoses.html.
		Removing the skeleton PSP (Playstation Portable) mode.
		Moving X11-related stuff in the machine struct into a helper
		struct.
		Cleanup of out-of-memory checks, to use a new CHECK_ALLOCATION
		macro (which prints a meaningful error message).
		Adding a COMMENT to each machine and device (for automagic
		.index comment generation).
		Doing regression testing for the next release.

==============  RELEASE 0.4.6  ==============
1 /*
2 * Copyright (C) 2003-2007 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: lk201.c,v 1.29 2007/06/15 20:11:27 debug Exp $
29 *
30 * COMMENT: LK201 keyboard and mouse, used by the dc7085 and scc controllers
31 */
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36
37 #include "console.h"
38 #include "devices.h"
39 #include "machine.h"
40 #include "misc.h"
41
42 #include "dc7085.h" /* for port names */
43 #include "lk201.h"
44
45
46 /*
47 * lk201_convert_ascii_to_keybcode():
48 *
49 * Converts ascii console input to LK201 keyboard scan codes, and adds
50 * those scancodes using the add_to_rx_queue() function.
51 */
52 void lk201_convert_ascii_to_keybcode(struct lk201_data *d, unsigned char ch)
53 {
54 int i, found=-1, shifted = 0, controlled = 0;
55
56 if (d->keyb_buf_pos > 0 && d->keyb_buf_pos < (int)sizeof(d->keyb_buf)) {
57 /* Escape sequence: */
58 d->keyb_buf[d->keyb_buf_pos] = ch;
59 d->keyb_buf_pos ++;
60
61 if (d->keyb_buf_pos == 2) {
62 if (ch == '[')
63 return;
64 d->keyb_buf_pos = 0;
65 /* not esc+[, output as normal key */
66 } else {
67 /* Inside an esc+[ sequence */
68
69 switch (ch) {
70 case 'A': found = 0xaa; /* Up */ break;
71 case 'B': found = 0xa9; /* Down */ break;
72 case 'C': found = 0xa8; /* Right */ break;
73 case 'D': found = 0xa7; /* Left */ break;
74 /* TODO: pageup, pagedown, ... */
75 default:
76 ;
77 }
78
79 d->keyb_buf_pos = 0;
80 }
81 } else
82 d->keyb_buf_pos = 0;
83
84 if (found == -1) {
85 switch (ch) {
86 case '\b':
87 found = 0xbc;
88 break;
89 case '\n':
90 case '\r':
91 found = 0xbd;
92 break;
93 case '\t':
94 found = 0xbe;
95 break;
96 case 27: /* esc */
97 d->keyb_buf[0] = 27;
98 d->keyb_buf_pos = 1;
99 return;
100 default:
101 if (ch >= 1 && ch <= 26) {
102 ch = 'a' + ch - 1;
103 controlled = 1;
104 }
105
106 shifted = 0;
107 for (i=0; i<256; i++) {
108 /* Skip numeric digits, so that the normal
109 digits are used instead. */
110 if (i >= 0x92 && i<=0xa0)
111 continue;
112
113 if (unshiftedAscii[i] == ch) {
114 found = i;
115 break;
116 }
117 }
118
119 if (found == -1) {
120 /* unshift ch: */
121 if (ch >= 'A' && ch <= 'Z')
122 ch = ch + ('a' - 'A');
123 for (i=0; i<256; i++)
124 if (shiftedAscii[i] == ch) {
125 found = i;
126 shifted = 1;
127 break;
128 }
129 }
130 }
131 }
132
133 if (!shifted)
134 d->add_to_rx_queue(d->add_data, KEY_UP, DCKBD_PORT);
135 else {
136 d->add_to_rx_queue(d->add_data, KEY_UP, DCKBD_PORT);
137 d->add_to_rx_queue(d->add_data, KEY_SHIFT, DCKBD_PORT);
138 }
139
140 if (controlled)
141 d->add_to_rx_queue(d->add_data, KEY_CONTROL, DCKBD_PORT);
142
143 /* Send the actual scan code: */
144 d->add_to_rx_queue(d->add_data, found, DCKBD_PORT);
145
146 /* Release the key: */
147 d->add_to_rx_queue(d->add_data, KEY_UP, DCKBD_PORT);
148 }
149
150
151 /*
152 * lk201_send_mouse_update_sequence():
153 *
154 * mouse_x, _y, _buttons contains the coordinates on the host's display, the
155 * "goal" of where we want to move.
156 *
157 * d->mouse_x, _y, _buttons contain the last values transmitted to the
158 * emulated machine.
159 */
160 static int lk201_send_mouse_update_sequence(struct lk201_data *d, int mouse_x,
161 int mouse_y, int mouse_buttons, int mouse_fb_nr)
162 {
163 int xsign, xdelta, ysign, ydelta, m;
164
165 xdelta = mouse_x - d->mouse_x;
166 ydelta = mouse_y - d->mouse_y;
167
168 /* If no change, then don't send any update! */
169 if (xdelta == 0 && ydelta == 0 && d->mouse_buttons == mouse_buttons)
170 return 0;
171
172 m = 20;
173
174 if (xdelta > m)
175 xdelta = m;
176 if (xdelta < -m)
177 xdelta = -m;
178 if (ydelta > m)
179 ydelta = m;
180 if (ydelta < -m)
181 ydelta = -m;
182
183 d->mouse_x += xdelta;
184 d->mouse_y += ydelta;
185 d->mouse_buttons = mouse_buttons;
186
187 /*
188 * TODO: Update d->mouse_framebuffer_nr some way!
189 */
190
191 xsign = xdelta < 0? 1 : 0;
192 ysign = ydelta < 0? 1 : 0;
193
194 switch (d->mouse_mode) {
195
196 case 0:
197 /* Do nothing (before the mouse is initialized) */
198 return 0;
199
200 case MOUSE_INCREMENTAL:
201 if (xdelta < 0)
202 xdelta = -xdelta;
203 if (ydelta < 0)
204 ydelta = -ydelta;
205
206 /* Reverse sign of x: (this is needed for some reason) */
207 xsign ^= 1;
208
209 d->add_to_rx_queue(d->add_data, MOUSE_START_FRAME +
210 MOUSE_X_SIGN*xsign + MOUSE_Y_SIGN*ysign +
211 (mouse_buttons & 7), DCMOUSE_PORT);
212 d->add_to_rx_queue(d->add_data, xdelta, DCMOUSE_PORT);
213 d->add_to_rx_queue(d->add_data, ydelta, DCMOUSE_PORT);
214 break;
215
216 default:
217 /* TODO: prompt mode and perhaps more stuff */
218 fatal("[ lk201: mouse mode 0x%02x unknown: TODO ]\n",
219 d->mouse_mode);
220 exit(1);
221 }
222
223 return 1;
224 }
225
226
227 /*
228 * lk201_tick():
229 *
230 * This function should be called "every now and then".
231 * If a key is available from the keyboard, add it to the rx queue.
232 * If other bits are set, an interrupt might need to be caused.
233 */
234 void lk201_tick(struct machine *machine, struct lk201_data *d)
235 {
236 int mouse_x, mouse_y, mouse_buttons, mouse_fb_nr;
237
238 if (console_charavail(d->console_handle)) {
239 unsigned char ch = console_readchar(d->console_handle);
240 if (d->use_fb)
241 lk201_convert_ascii_to_keybcode(d, ch);
242 else {
243 /*
244 * This is ugly, but necessary because different
245 * machines seem to use different ports for their
246 * serial console:
247 *
248 * DEC MIPSMATE 5100 uses the keyboard port.
249 * DECstation 3100 (PMAX) and 5000/2000 (3MAX) use
250 * the printer port.
251 * Others seem to use the comm port.
252 */
253 if (machine->machine_type == MACHINE_PMAX) {
254 switch (machine->machine_subtype) {
255 case MACHINE_DEC_MIPSMATE_5100:
256 d->add_to_rx_queue(d->add_data,
257 ch, DCKBD_PORT);
258 break;
259 case MACHINE_DEC_PMAX_3100:
260 case MACHINE_DEC_3MAX_5000:
261 d->add_to_rx_queue(d->add_data,
262 ch, DCPRINTER_PORT);
263 break;
264 default:
265 d->add_to_rx_queue(d->add_data,
266 ch, DCCOMM_PORT);
267 }
268 } else {
269 d->add_to_rx_queue(d->add_data,
270 ch, DCCOMM_PORT);
271 }
272 }
273 }
274
275 /* Don't do mouse updates if we're running in serial console mode: */
276 if (!d->use_fb)
277 return;
278
279 console_getmouse(&mouse_x, &mouse_y, &mouse_buttons,
280 &mouse_fb_nr);
281
282 lk201_send_mouse_update_sequence(d, mouse_x, mouse_y,
283 mouse_buttons, mouse_fb_nr);
284 }
285
286
287 void lk201_tx_data(struct lk201_data *d, int port, int idata)
288 {
289 switch (port) {
290 case DCKBD_PORT: /* port 0 */
291 if (!d->use_fb) {
292 /* Simply print the character to stdout: */
293 console_putchar(d->console_handle, idata);
294 } else {
295 switch (idata) {
296 case LK_LED_DISABLE: /* 0x11 */
297 break;
298 case LK_LED_ENABLE: /* 0x13 */
299 break;
300 case LK_BELL_ENABLE: /* 0x23 */
301 break;
302 case LED_1:
303 case LED_2:
304 break;
305 case LED_3:
306 break;
307 case LED_4:
308 break;
309 case LK_KBD_ENABLE: /* 0x8b */
310 break;
311 case LED_ALL: /* 0x8f */
312 break;
313 case LK_RING_BELL: /* 0xa7 */
314 break;
315 case 0xab: /* Get Keyboard ID: */
316 /*
317 * First byte:
318 * 1 = LK201
319 * 2 = LK401
320 * 3 = LK443
321 * 4 = LK421
322 *
323 * TODO: What about the second byte?
324 */
325 d->add_to_rx_queue(d->add_data,
326 0x01, DCKBD_PORT);
327 d->add_to_rx_queue(d->add_data,
328 0x22, DCKBD_PORT);
329 break;
330 case LK_DEFAULTS: /* 0xd3 */
331 /* TODO? */
332 break;
333 case 0xfd: /* Keyboard self-test: */
334 /* Suitable return values according to
335 Mach/PMAX source code: */
336 d->add_to_rx_queue(d->add_data,
337 0x01, DCKBD_PORT);
338 d->add_to_rx_queue(d->add_data,
339 0x00, DCKBD_PORT);
340 d->add_to_rx_queue(d->add_data,
341 0x00, DCKBD_PORT);
342 d->add_to_rx_queue(d->add_data,
343 0x00, DCKBD_PORT);
344 break;
345 default:
346 debug("[ lk201: keyboard control: 0x%x ]\n",
347 idata);
348 }
349 }
350 break;
351 case DCMOUSE_PORT: /* port 1 */
352 debug("[ lk201: writing data to MOUSE: 0x%x", idata);
353 if (idata == MOUSE_INCREMENTAL) {
354 d->mouse_mode = MOUSE_INCREMENTAL;
355 } else if (idata == MOUSE_SELF_TEST) {
356 /*
357 * Mouse self-test:
358 *
359 * TODO: Find out if this is correct. The lowest
360 * four bits of the second byte should be
361 * 0x2, according to NetBSD/pmax. But the
362 * other bits and bytes?
363 */
364 debug(" (mouse self-test request)");
365 d->add_to_rx_queue(d->add_data,
366 0xa0 | d->mouse_revision, DCMOUSE_PORT);
367 d->add_to_rx_queue(d->add_data, 0x02, DCMOUSE_PORT);
368 d->add_to_rx_queue(d->add_data, 0x00, DCMOUSE_PORT);
369 d->add_to_rx_queue(d->add_data, 0x00, DCMOUSE_PORT);
370 } else
371 debug(" UNKNOWN byte; TODO");
372 debug(" ]\n");
373 break;
374 case DCCOMM_PORT: /* port 2 */
375 case DCPRINTER_PORT: /* port 3 */
376 /* Simply print the character to stdout: */
377 console_putchar(d->console_handle, idata);
378 }
379 }
380
381
382 /*
383 * lk201_init():
384 *
385 * Initialize lk201 keyboard/mouse settings.
386 */
387 void lk201_init(struct lk201_data *d, int use_fb,
388 void (*add_to_rx_queue)(void *,int,int),
389 int console_handle, void *add_data)
390 {
391 memset(d, 0, sizeof(struct lk201_data));
392
393 d->add_to_rx_queue = add_to_rx_queue;
394 d->add_data = add_data;
395
396 d->use_fb = use_fb;
397 d->mouse_mode = 0;
398 d->mouse_revision = 0; /* 0..15 */
399 d->console_handle = console_handle;
400 }
401
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