/[gxemul]/trunk/src/devices/lk201.c
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Mon Oct 8 16:19:37 2007 UTC (16 years, 6 months ago) by dpavlin
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++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1121 2006/02/18 21:03:08 debug Exp $
20051126	Cobalt and PReP now work with the 21143 NIC.
		Continuing on Alpha dyntrans things.
		Fixing some more left-shift-by-24 to unsigned.
20051127	Working on OpenFirmware emulation; major cleanup/redesign.
		Progress on MacPPC emulation: NetBSD detects two CPUs (when
		running with -n 2), framebuffer output (for text) works.
		Adding quick-hack Bandit PCI controller and "gc" interrupt
		controller for MacPPC.
20051128	Changing from a Bandit to a Uni-North controller for macppc.
		Continuing on OpenFirmware and MacPPC emulation in general
		(obio controller, and wdc attached to the obio seems to work).
20051129	More work on MacPPC emulation (adding a dummy ADB controller).
		Continuing the PCI bus cleanup (endianness and tag composition)
		and rewriting all PCI controllers' access functions.
20051130	Various minor PPC dyntrans optimizations.
		Manually inlining some parts of the framebuffer redraw routine.
		Slowly beginning the conversion of the old MIPS emulation into
		dyntrans (but this will take quite some time to get right).
		Generalizing quick_pc_to_pointers.
20051201	Documentation update (David Muse has made available a kernel
		which simplifies Debian/DECstation installation).
		Continuing on the ADB bus controller.
20051202	Beginning a rewrite of the Zilog serial controller (dev_zs).
20051203	Continuing on the zs rewrite (now called dev_z8530); conversion
		to devinit style.
		Reworking some of the input-only vs output-only vs input-output
		details of src/console.c, better warning messages, and adding
		a debug dump.
		Removing the concept of "device state"; it wasn't really used.
		Changing some debug output (-vv should now be used to show all
		details about devices and busses; not shown during normal
		startup anymore).
		Beginning on some SPARC instruction disassembly support.
20051204	Minor PPC updates (WALNUT skeleton stuff).
		Continuing on the MIPS dyntrans rewrite.
		More progress on the ADB controller (a keyboard is "detected"
		by NetBSD and OpenBSD).
		Downgrading OpenBSD/arc as a guest OS from "working" to
		"almost working" in the documentation.
		Progress on Algor emulation ("v3" PCI controller).
20051205	Minor updates.
20051207	Sorting devices according to address; this reduces complexity
		of device lookups from O(n) to O(log n) in memory_rw (but no
		real performance increase (yet) in experiments).
20051210	Beginning the work on native dyntrans backends (by making a
		simple skeleton; so far only for Alpha hosts).
20051211	Some very minor SPARC updates.
20051215	Fixing a bug in the MIPS mul (note: not mult) instruction,
		so it also works with non-64-bit emulation. (Thanks to Alec
		Voropay for noticing the problem.)
20051216	More work on the fake/empty/simple/skeleton/whatever backend;
		performance doesn't increase, so this isn't really worth it,
		but it was probably worth it to prepare for a real backend
		later.
20051219	More instr call statistics gathering and analysis stuff.
20051220	Another fix for MIPS 'mul'. Also converting mul and {d,}cl{o,z}
		to dyntrans.
		memory_ppc.c syntax error fix (noticed by Peter Valchev).
		Beginning to move out machines from src/machine.c into
		individual files in src/machines (in a way similar to the
		autodev system for devices).
20051222	Updating the documentation regarding NetBSD/pmax 3.0.
20051223	- " - NetBSD/cats 3.0.
20051225	- " - NetBSD/hpcmips 3.0.
20051226	Continuing on the machine registry redesign.
		Adding support for ARM rrx (33-bit rotate).
		Fixing some signed/unsigned issues (exposed by gcc -W).
20051227	Fixing the bug which prevented a NetBSD/prep 3.0 install kernel
		from starting (triggered when an mtmsr was the last instruction
		on a page). Unfortunately not enough to get the kernel to run
		as well as the 2.1 kernels did.
20051230	Some dyntrans refactoring.
20051231	Continuing on the machine registry redesign.
20060101-10	Continuing... moving more machines. Moving MD interrupt stuff
		from machine.c into a new src/machines/interrupts.c.
20060114	Adding various mvmeppc machine skeletons.
20060115	Continuing on mvme* stuff. NetBSD/mvmeppc prints boot messages
		(for MVME1600) and reaches the root device prompt, but no
		specific hardware devices are emulated yet.
20060116	Minor updates to the mvme1600 emulation mode; the Eagle PCI bus
		seems to work without much modification, and a 21143 can be
		detected, interrupts might work (but untested so far).
		Adding a fake MK48Txx (mkclock) device, for NetBSD/mvmeppc.
20060121	Adding an aux control register for ARM. (A BIG thank you to
		Olivier Houchard for tracking down this bug.)
20060122	Adding more ARM instructions (smulXY), and dev_iq80321_7seg.
20060124	Adding disassembly of more ARM instructions (mia*, mra/mar),
		and some semi-bogus XScale and i80321 registers.
20060201-02	Various minor updates. Moving the last machines out of
		machine.c.
20060204	Adding a -c command line option, for running debugger commands
		before the simulation starts, but after all files have been
		loaded.
		Minor iq80321-related updates.
20060209	Minor hacks (DEVINIT macro, etc).
		Preparing for the generalization of the 64-bit dyntrans address
		translation subsystem.
20060216	Adding ARM ldrd (double-register load).
20060217	Continuing on various ARM-related stuff.
20060218	More progress on the ATA/wdc emulation for NetBSD/iq80321.
		NetBSD/evbarm can now be installed :-)  Updating the docs, etc.
		Continuing on Algor emulation.

==============  RELEASE 0.3.8  ==============
1 dpavlin 4 /*
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 dpavlin 22 * $Id: lk201.c,v 1.25 2005/12/26 14:14:38 debug Exp $
29 dpavlin 4 *
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 dpavlin 22 if (d->keyb_buf_pos > 0 && d->keyb_buf_pos < (int)sizeof(d->keyb_buf)) {
57 dpavlin 4 /* 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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