/[gxemul]/trunk/src/devices/lk201.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
ViewVC logotype

Annotation of /trunk/src/devices/lk201.c

Parent Directory Parent Directory | Revision Log Revision Log

Revision 42 - (hide 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 dpavlin 4 /*
2 dpavlin 34 * Copyright (C) 2003-2007 Anders Gavare. All rights reserved.
3 dpavlin 4 *
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 42 * $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 dpavlin 4 */
32    
33     #include <stdio.h>
34     #include <stdlib.h>
35     #include <string.h>
36    
37     #include "console.h"
38     #include "devices.h"
39 dpavlin 32 #include "machine.h"
40 dpavlin 4 #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 dpavlin 32 * mouse_x, _y, _buttons contains the coordinates on the host's display, the
155     * "goal" of where we want to move.
156 dpavlin 4 *
157 dpavlin 32 * d->mouse_x, _y, _buttons contain the last values transmitted to the
158     * emulated machine.
159 dpavlin 4 */
160 dpavlin 32 static int lk201_send_mouse_update_sequence(struct lk201_data *d, int mouse_x,
161 dpavlin 4 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 dpavlin 32 return 0;
171 dpavlin 4
172 dpavlin 32 m = 20;
173 dpavlin 4
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 dpavlin 32 /*
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 dpavlin 4 switch (d->mouse_mode) {
195 dpavlin 32
196 dpavlin 4 case 0:
197     /* Do nothing (before the mouse is initialized) */
198 dpavlin 32 return 0;
199    
200 dpavlin 4 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 dpavlin 32
216 dpavlin 4 default:
217     /* TODO: prompt mode and perhaps more stuff */
218     fatal("[ lk201: mouse mode 0x%02x unknown: TODO ]\n",
219     d->mouse_mode);
220 dpavlin 32 exit(1);
221 dpavlin 4 }
222 dpavlin 32
223     return 1;
224 dpavlin 4 }
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 dpavlin 32 void lk201_tick(struct machine *machine, struct lk201_data *d)
235 dpavlin 4 {
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 dpavlin 32 * DECstation 3100 (PMAX) and 5000/2000 (3MAX) use
250     * the printer port.
251     * Others seem to use the comm port.
252 dpavlin 4 */
253 dpavlin 32 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 dpavlin 4 }
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 dpavlin 32 console_getmouse(&mouse_x, &mouse_y, &mouse_buttons,
280     &mouse_fb_nr);
281 dpavlin 4
282 dpavlin 32 lk201_send_mouse_update_sequence(d, mouse_x, mouse_y,
283     mouse_buttons, mouse_fb_nr);
284 dpavlin 4 }
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    
  ViewVC Help
Powered by ViewVC 1.1.26