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

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Revision 4 - (show annotations)
Mon Oct 8 16:18:00 2007 UTC (16 years, 5 months ago) by dpavlin
File MIME type: text/plain
File size: 11062 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.707 2005/04/27 16:37:33 debug Exp $
20050408	Some minor updates to the wdc. Linux now doesn't complain
		anymore if a disk is non-present.
20050409	Various minor fixes (a bintrans bug, and some other things).
		The wdc seems to work with Playstation2 emulation, but there
		is a _long_ annoying delay when disks are detected.
		Fixing a really important bintrans bug (when devices and RAM
		are mixed within 4KB pages), which was triggered with
		NetBSD/playstation2 kernels.
20050410	Adding a dummy dev_ps2_ether (just so that NetBSD doesn't
		complain as much during bootup).
		Symbols starting with '$' are now ignored.
		Renaming dev_ps2_ohci.c to dev_ohci.c, etc.
20050411	Moving the bintrans-cache-isolation check from cpu_mips.c to
		cpu_mips_coproc.c. (I thought this would give a speedup, but
		it's not noticable.)
		Better playstation2 sbus interrupt code.
		Skip ahead many ticks if the count register is read manually.
		(This increases the speed of delay-loops that simply read
		the count register.)
20050412	Updates to the playstation2 timer/interrupt code.
		Some other minor updates.
20050413	NetBSD/cobalt runs from a disk image :-) including userland;
		updating the documentation on how to install NetBSD/cobalt
		using NetBSD/pmax (!).
		Some minor bintrans updates (no real speed improvement) and
		other minor updates (playstation2 now uses the -o options).
20050414	Adding a dummy x86 (and AMD64) mode.
20050415	Adding some (32-bit and 16-bit) x86 instructions.
		Adding some initial support for non-SCSI, non-IDE floppy
		images. (The x86 mode can boot from these, more or less.)
		Moving the devices/ and include/ directories to src/devices/
		and src/include/, respectively.
20050416	Continuing on the x86 stuff. (Adding pc_bios.c and some simple
		support for software interrupts in 16-bit mode.)
20050417	Ripping out most of the x86 instruction decoding stuff, trying
		to rewrite it in a cleaner way.
		Disabling some of the least working CPU families in the
		configure script (sparc, x86, alpha, hppa), so that they are
		not enabled by default.
20050418	Trying to fix the bug which caused problems when turning on
		and off bintrans interactively, by flushing the bintrans cache
		whenever bintrans is manually (re)enabled.
20050419	Adding the 'lswi' ppc instruction.
		Minor updates to the x86 instruction decoding.
20050420	Renaming x86 register name indices from R_xx to X86_R_xx (this
		makes building on Tru64 nicer).
20050422	Adding a check for duplicate MIPS TLB entries on tlbwr/tlbwi.
20050427	Adding screenshots to guestoses.html.
		Some minor fixes and testing for the next release.

==============  RELEASE 0.3.2  ==============


1 /*
2 * Copyright (C) 2003-2005 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 1.24 2005/02/13 11:40:58 debug Exp $
29 *
30 * LK201 keyboard and mouse specifics, used by the dc7085 and scc serial
31 * controller devices.
32 */
33
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37
38 #include "console.h"
39 #include "devices.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 < 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. d->mouse_* contains the current state.
156 *
157 * TODO: Comment this better.
158 */
159 void lk201_send_mouse_update_sequence(struct lk201_data *d, int mouse_x,
160 int mouse_y, int mouse_buttons, int mouse_fb_nr)
161 {
162 int xsign, xdelta, ysign, ydelta, m;
163 int framebuffer_nr;
164
165 if (d->old_host_mouse_x == mouse_x &&
166 d->old_host_mouse_y == mouse_y)
167 d->old_host_mouse_stays_put ++;
168 else
169 d->old_host_mouse_stays_put = 0;
170
171 d->old_host_mouse_x = mouse_x;
172 d->old_host_mouse_y = mouse_y;
173
174 if (d->old_host_mouse_stays_put > 400 &&
175 d->mouse_buttons == mouse_buttons)
176 return;
177
178 console_get_framebuffer_mouse(&d->mouse_x, &d->mouse_y,
179 &framebuffer_nr);
180
181 xdelta = mouse_x - d->mouse_x;
182 ydelta = mouse_y - d->mouse_y;
183
184 /*
185 * If the last framebuffer cursor placement was not in the
186 * same window as the last host cursor movement, then we
187 * we have to move to the leftmost extreme or rightmost
188 * extreme:
189 */
190 if (framebuffer_nr != mouse_fb_nr) {
191 if (mouse_fb_nr > framebuffer_nr)
192 xdelta = 2000;
193 if (mouse_fb_nr < framebuffer_nr)
194 xdelta = -2000;
195 }
196
197 /* If no change, then don't send any update! */
198 if (xdelta == 0 && ydelta == 0 && d->mouse_buttons == mouse_buttons)
199 return;
200
201 m = 4 >> (d->old_host_mouse_stays_put / 30);
202 if (m < 1)
203 m = 1;
204
205 if (xdelta > m)
206 xdelta = m;
207 if (xdelta < -m)
208 xdelta = -m;
209 if (ydelta > m)
210 ydelta = m;
211 if (ydelta < -m)
212 ydelta = -m;
213
214 xsign = xdelta < 0? 1 : 0;
215 ysign = ydelta < 0? 1 : 0;
216
217 d->mouse_x += xdelta;
218 d->mouse_y += ydelta;
219 d->mouse_buttons = mouse_buttons;
220
221 switch (d->mouse_mode) {
222 case 0:
223 /* Do nothing (before the mouse is initialized) */
224 break;
225 case MOUSE_INCREMENTAL:
226 if (xdelta < 0)
227 xdelta = -xdelta;
228 if (ydelta < 0)
229 ydelta = -ydelta;
230
231 /* Reverse sign of x: (this is needed for some reason) */
232 xsign ^= 1;
233
234 d->add_to_rx_queue(d->add_data, MOUSE_START_FRAME +
235 MOUSE_X_SIGN*xsign + MOUSE_Y_SIGN*ysign +
236 (mouse_buttons & 7), DCMOUSE_PORT);
237 d->add_to_rx_queue(d->add_data, xdelta, DCMOUSE_PORT);
238 d->add_to_rx_queue(d->add_data, ydelta, DCMOUSE_PORT);
239 break;
240 default:
241 /* TODO: prompt mode and perhaps more stuff */
242 fatal("[ lk201: mouse mode 0x%02x unknown: TODO ]\n",
243 d->mouse_mode);
244 }
245 }
246
247
248 /*
249 * lk201_tick():
250 *
251 * This function should be called "every now and then".
252 * If a key is available from the keyboard, add it to the rx queue.
253 * If other bits are set, an interrupt might need to be caused.
254 */
255 void lk201_tick(struct lk201_data *d)
256 {
257 int mouse_x, mouse_y, mouse_buttons, mouse_fb_nr;
258
259 if (console_charavail(d->console_handle)) {
260 unsigned char ch = console_readchar(d->console_handle);
261 if (d->use_fb)
262 lk201_convert_ascii_to_keybcode(d, ch);
263 else {
264 /*
265 * This is ugly, but necessary because different
266 * machines seem to use different ports for their
267 * serial console:
268 *
269 * DEC MIPSMATE 5100 uses the keyboard port.
270 * DECstation 3100 (PMAX) uses the printer port.
271 * All others seem to use the comm port.
272 */
273 d->add_to_rx_queue(d->add_data, ch, DCKBD_PORT);
274 d->add_to_rx_queue(d->add_data, ch, DCCOMM_PORT);
275 d->add_to_rx_queue(d->add_data, ch, DCPRINTER_PORT);
276 }
277 }
278
279 /* Don't do mouse updates if we're running in serial console mode: */
280 if (!d->use_fb)
281 return;
282
283 d->mouse_check_interval --;
284 if (d->mouse_check_interval <= 0) {
285 d->mouse_check_interval =
286 d->mouse_check_interval_reset;
287
288 /*
289 * Check for mouse updates:
290 *
291 * Note: mouse_{x,y} are where the mouse is
292 * on the host's display.
293 */
294 console_getmouse(&mouse_x, &mouse_y, &mouse_buttons,
295 &mouse_fb_nr);
296
297 if (mouse_x != d->mouse_x || mouse_y != d->mouse_y ||
298 mouse_buttons != d->mouse_buttons)
299 lk201_send_mouse_update_sequence(d, mouse_x, mouse_y,
300 mouse_buttons, mouse_fb_nr);
301 }
302 }
303
304
305 void lk201_tx_data(struct lk201_data *d, int port, int idata)
306 {
307 switch (port) {
308 case DCKBD_PORT: /* port 0 */
309 if (!d->use_fb) {
310 /* Simply print the character to stdout: */
311 console_putchar(d->console_handle, idata);
312 } else {
313 switch (idata) {
314 case LK_LED_DISABLE: /* 0x11 */
315 break;
316 case LK_LED_ENABLE: /* 0x13 */
317 break;
318 case LK_BELL_ENABLE: /* 0x23 */
319 break;
320 case LED_1:
321 case LED_2:
322 break;
323 case LED_3:
324 break;
325 case LED_4:
326 break;
327 case LK_KBD_ENABLE: /* 0x8b */
328 break;
329 case LED_ALL: /* 0x8f */
330 break;
331 case LK_RING_BELL: /* 0xa7 */
332 break;
333 case 0xab: /* Get Keyboard ID: */
334 /*
335 * First byte:
336 * 1 = LK201
337 * 2 = LK401
338 * 3 = LK443
339 * 4 = LK421
340 *
341 * TODO: What about the second byte?
342 */
343 d->add_to_rx_queue(d->add_data,
344 0x01, DCKBD_PORT);
345 d->add_to_rx_queue(d->add_data,
346 0x22, DCKBD_PORT);
347 break;
348 case LK_DEFAULTS: /* 0xd3 */
349 /* TODO? */
350 break;
351 case 0xfd: /* Keyboard self-test: */
352 /* Suitable return values according to
353 Mach/PMAX source code: */
354 d->add_to_rx_queue(d->add_data,
355 0x01, DCKBD_PORT);
356 d->add_to_rx_queue(d->add_data,
357 0x00, DCKBD_PORT);
358 d->add_to_rx_queue(d->add_data,
359 0x00, DCKBD_PORT);
360 d->add_to_rx_queue(d->add_data,
361 0x00, DCKBD_PORT);
362 break;
363 default:
364 debug("[ lk201: keyboard control: 0x%x ]\n",
365 idata);
366 }
367 }
368 break;
369 case DCMOUSE_PORT: /* port 1 */
370 debug("[ lk201: writing data to MOUSE: 0x%x", idata);
371 if (idata == MOUSE_INCREMENTAL) {
372 d->mouse_mode = MOUSE_INCREMENTAL;
373 } else if (idata == MOUSE_SELF_TEST) {
374 /*
375 * Mouse self-test:
376 *
377 * TODO: Find out if this is correct. The lowest
378 * four bits of the second byte should be
379 * 0x2, according to NetBSD/pmax. But the
380 * other bits and bytes?
381 */
382 debug(" (mouse self-test request)");
383 d->add_to_rx_queue(d->add_data,
384 0xa0 | d->mouse_revision, DCMOUSE_PORT);
385 d->add_to_rx_queue(d->add_data, 0x02, DCMOUSE_PORT);
386 d->add_to_rx_queue(d->add_data, 0x00, DCMOUSE_PORT);
387 d->add_to_rx_queue(d->add_data, 0x00, DCMOUSE_PORT);
388 } else
389 debug(" UNKNOWN byte; TODO");
390 debug(" ]\n");
391 break;
392 case DCCOMM_PORT: /* port 2 */
393 case DCPRINTER_PORT: /* port 3 */
394 /* Simply print the character to stdout: */
395 console_putchar(d->console_handle, idata);
396 }
397 }
398
399
400 /*
401 * lk201_init():
402 *
403 * Initialize lk201 keyboard/mouse settings.
404 */
405 void lk201_init(struct lk201_data *d, int use_fb,
406 void (*add_to_rx_queue)(void *,int,int),
407 int console_handle, void *add_data)
408 {
409 memset(d, 0, sizeof(struct lk201_data));
410
411 d->add_to_rx_queue = add_to_rx_queue;
412 d->add_data = add_data;
413
414 d->use_fb = use_fb;
415 d->mouse_mode = 0;
416 d->mouse_revision = 0; /* 0..15 */
417 d->console_handle = console_handle;
418
419 d->mouse_check_interval_reset = 1 << 3;
420 }
421

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