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

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Revision 34 - (show annotations)
Mon Oct 8 16:21:17 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 10379 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1480 2007/02/19 01:34:42 debug Exp $
20061029	Changing usleep(1) calls in the debugger to usleep(10000)
20061107	Adding a new disk image option (-d o...) which sets the ISO9660
		filesystem base offset; also making some other hacks to allow
		NetBSD/dreamcast and homebrew demos/games to boot directly
		from a filesystem image.
		Moving Dreamcast-specific stuff in the documentation to its
		own page (dreamcast.html).
		Adding a border to the Dreamcast PVR framebuffer.
20061108	Adding a -T command line option (again?), for halting the
		emulator on unimplemented memory accesses.
20061109	Continuing on various SH4 and Dreamcast related things.
		The emulator should now halt on more unimplemented device
		accesses, instead of just printing a warning, forcing me to
		actually implement missing stuff :)
20061111	Continuing on SH4 and Dreamcast stuff.
		Adding a bogus Landisk (SH4) machine mode.
20061112	Implementing some parts of the Dreamcast GDROM device. With
		some ugly hacks, NetBSD can (barely) mount an ISO image.
20061113	NetBSD/dreamcast now starts booting from the Live CD image,
		but crashes randomly quite early on in the boot process.
20061122	Beginning on a skeleton interrupt.h and interrupt.c for the
		new interrupt subsystem.
20061124	Continuing on the new interrupt system; taking the first steps
		to attempt to connect CPUs (SuperH and MIPS) and devices
		(dev_cons and SH4 timer interrupts) to it. Many things will
		probably break from now on.
20061125	Converting dev_ns16550, dev_8253 to the new interrupt system.
		Attempting to begin to convert the ISA bus.
20061130	Incorporating a patch from Brian Foley for the configure
		script, which checks for X11 libs in /usr/X11R6/lib64 (which
		is used on some Linux systems).
20061227	Adding a note in the man page about booting from Dreamcast
		CDROM images (i.e. that no external kernel is needed).
20061229	Continuing on the interrupt system rewrite: beginning to
		convert more devices, adding abort() calls for legacy interrupt
		system calls so that everything now _has_ to be rewritten!
		Almost all machine modes are now completely broken.
20061230	More progress on removing old interrupt code, mostly related
		to the ISA bus + devices, the LCA bus (on AlphaBook1), and
		the Footbridge bus (for CATS). And some minor PCI stuff.
		Connecting the ARM cpu to the new interrupt system.
		The CATS, NetWinder, and QEMU_MIPS machine modes now work with
		the new interrupt system :)
20061231	Connecting PowerPC CPUs to the new interrupt system.
		Making PReP machines (IBM 6050) work again.
		Beginning to convert the GT PCI controller (for e.g. Malta
		and Cobalt emulation). Some things work, but not everything.
		Updating Copyright notices for 2007.
20070101	Converting dev_kn02 from legacy style to devinit; the 3max
		machine mode now works with the new interrupt system :-]
20070105	Beginning to convert the SGI O2 machine to the new interrupt
		system; finally converting O2 (IP32) devices to devinit, etc.
20070106	Continuing on the interrupt system redesign/rewrite; KN01
		(PMAX), KN230, and Dreamcast ASIC interrupts should work again,
		moving out stuff from machine.h and devices.h into the
		corresponding devices, beginning the rewrite of i80321
		interrupts, etc.
20070107	Beginning on the rewrite of Eagle interrupt stuff (PReP, etc).
20070117	Beginning the rewrite of Algor (V3) interrupts (finally
		changing dev_v3 into devinit style).
20070118	Removing the "bus" registry concept from machine.h, because
		it was practically meaningless.
		Continuing on the rewrite of Algor V3 ISA interrupts.
20070121	More work on Algor interrupts; they are now working again,
		well enough to run NetBSD/algor. :-)
20070122	Converting VR41xx (HPCmips) interrupts. NetBSD/hpcmips
		can be installed using the new interrupt system :-)
20070123	Making the testmips mode work with the new interrupt system.
20070127	Beginning to convert DEC5800 devices to devinit, and to the
		new interrupt system.
		Converting Playstation 2 devices to devinit, and converting
		the interrupt system. Also fixing a severe bug: the interrupt
		mask register on Playstation 2 is bitwise _toggled_ on writes.
20070128	Removing the dummy NetGear machine mode and the 8250 device
		(which was only used by the NetGear machine).
		Beginning to convert the MacPPC GC (Grand Central) interrupt
		controller to the new interrupt system.
		Converting Jazz interrupts (PICA61 etc.) to the new interrupt
		system. NetBSD/arc can be installed again :-)
		Fixing the JAZZ timer (hardcoding it at 100 Hz, works with
		NetBSD and it is better than a completely dummy timer as it
		was before).
		Converting dev_mp to the new interrupt system, although I
		haven't had time to actually test it yet.
		Completely removing src/machines/interrupts.c, cpu_interrupt
		and cpu_interrupt_ack in src/cpu.c, and
		src/include/machine_interrupts.h! Adding fatal error messages
		+ abort() in the few places that are left to fix.
		Converting dev_z8530 to the new interrupt system.
		FINALLY removing the md_int struct completely from the
		machine struct.
		SH4 fixes (adding a PADDR invalidation in the ITLB replacement
		code in memory_sh.c); the NetBSD/dreamcast LiveCD now runs
		all the way to the login prompt, and can be interacted with :-)
		Converting the CPC700 controller (PCI and interrupt controller
		for PM/PPC) to the new interrupt system.
20070129	Fixing MACE ISA interrupts (SGI IP32 emulation). Both NetBSD/
		sgimips' and OpenBSD/sgi's ramdisk kernels can now be
		interacted with again.
20070130	Moving out the MIPS multi_lw and _sw instruction combinations
		so that they are auto-generated at compile time instead.
20070131	Adding detection of amd64/x86_64 hosts in the configure script,
		for doing initial experiments (again :-) with native code
		generation.
		Adding a -k command line option to set the size of the dyntrans
		cache, and a -B command line option to disable native code
		generation, even if GXemul was compiled with support for
		native code generation for the specific host CPU architecture.
20070201	Experimenting with a skeleton for native code generation.
		Changing the default behaviour, so that native code generation
		is now disabled by default, and has to be enabled by using
		-b on the command line.
20070202	Continuing the native code generation experiments.
		Making PCI interrupts work for Footbridge again.
20070203	More native code generation experiments.
		Removing most of the native code generation experimental code,
		it does not make sense to include any quick hacks like this.
		Minor cleanup/removal of some more legacy MIPS interrupt code.
20070204	Making i80321 interrupts work again (for NetBSD/evbarm etc.),
		and fixing the timer at 100 Hz.
20070206	Experimenting with removing the wdc interrupt slowness hack.
20070207	Lowering the number of dyntrans TLB entries for MIPS from
		192 to 128, resulting in a minor speed improvement.
		Minor optimization to the code invalidation routine in
		cpu_dyntrans.c.
20070208	Increasing (experimentally) the nr of dyntrans instructions per
		loop from 60 to 120.
20070210	Commenting out (experimentally) the dyntrans_device_danger
		detection in memory_rw.c.
		Changing the testmips and baremips machines to use a revision 2
		MIPS64 CPU by default, instead of revision 1.
		Removing the dummy i960, IA64, x86, AVR32, and HP PA-RISC
		files, the PC bios emulation, and the Olivetti M700 (ARC) and
		db64360 emulation modes.
20070211	Adding an "mp" demo to the demos directory, which tests the
		SMP functionality of the testmips machine.
		Fixing PReP interrupts some more. NetBSD/prep now boots again.
20070216	Adding a "nop workaround" for booting Mach/PMAX to the
		documentation; thanks to Artur Bujdoso for the values.
		Converting more of the MacPPC interrupt stuff to the new
		system.
		Beginning to convert BeBox interrupts to the new system.
		PPC603e should NOT have the PPC_NO_DEC flag! Removing it.
		Correcting BeBox clock speed (it was set to 100 in the NetBSD
		bootinfo block, but should be 33000000/4), allowing NetBSD
		to start without using the (incorrect) PPC_NO_DEC hack.
20070217	Implementing (slow) AltiVec vector loads and stores, allowing
		NetBSD/macppc to finally boot using the GENERIC kernel :-)
		Updating the documentation with install instructions for
		NetBSD/macppc.
20070218-19	Regression testing for the release.

==============  RELEASE 0.4.4  ==============
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 1.28 2006/12/30 13:31:00 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 "machine.h"
41 #include "misc.h"
42
43 #include "dc7085.h" /* for port names */
44 #include "lk201.h"
45
46
47 /*
48 * lk201_convert_ascii_to_keybcode():
49 *
50 * Converts ascii console input to LK201 keyboard scan codes, and adds
51 * those scancodes using the add_to_rx_queue() function.
52 */
53 void lk201_convert_ascii_to_keybcode(struct lk201_data *d, unsigned char ch)
54 {
55 int i, found=-1, shifted = 0, controlled = 0;
56
57 if (d->keyb_buf_pos > 0 && d->keyb_buf_pos < (int)sizeof(d->keyb_buf)) {
58 /* Escape sequence: */
59 d->keyb_buf[d->keyb_buf_pos] = ch;
60 d->keyb_buf_pos ++;
61
62 if (d->keyb_buf_pos == 2) {
63 if (ch == '[')
64 return;
65 d->keyb_buf_pos = 0;
66 /* not esc+[, output as normal key */
67 } else {
68 /* Inside an esc+[ sequence */
69
70 switch (ch) {
71 case 'A': found = 0xaa; /* Up */ break;
72 case 'B': found = 0xa9; /* Down */ break;
73 case 'C': found = 0xa8; /* Right */ break;
74 case 'D': found = 0xa7; /* Left */ break;
75 /* TODO: pageup, pagedown, ... */
76 default:
77 ;
78 }
79
80 d->keyb_buf_pos = 0;
81 }
82 } else
83 d->keyb_buf_pos = 0;
84
85 if (found == -1) {
86 switch (ch) {
87 case '\b':
88 found = 0xbc;
89 break;
90 case '\n':
91 case '\r':
92 found = 0xbd;
93 break;
94 case '\t':
95 found = 0xbe;
96 break;
97 case 27: /* esc */
98 d->keyb_buf[0] = 27;
99 d->keyb_buf_pos = 1;
100 return;
101 default:
102 if (ch >= 1 && ch <= 26) {
103 ch = 'a' + ch - 1;
104 controlled = 1;
105 }
106
107 shifted = 0;
108 for (i=0; i<256; i++) {
109 /* Skip numeric digits, so that the normal
110 digits are used instead. */
111 if (i >= 0x92 && i<=0xa0)
112 continue;
113
114 if (unshiftedAscii[i] == ch) {
115 found = i;
116 break;
117 }
118 }
119
120 if (found == -1) {
121 /* unshift ch: */
122 if (ch >= 'A' && ch <= 'Z')
123 ch = ch + ('a' - 'A');
124 for (i=0; i<256; i++)
125 if (shiftedAscii[i] == ch) {
126 found = i;
127 shifted = 1;
128 break;
129 }
130 }
131 }
132 }
133
134 if (!shifted)
135 d->add_to_rx_queue(d->add_data, KEY_UP, DCKBD_PORT);
136 else {
137 d->add_to_rx_queue(d->add_data, KEY_UP, DCKBD_PORT);
138 d->add_to_rx_queue(d->add_data, KEY_SHIFT, DCKBD_PORT);
139 }
140
141 if (controlled)
142 d->add_to_rx_queue(d->add_data, KEY_CONTROL, DCKBD_PORT);
143
144 /* Send the actual scan code: */
145 d->add_to_rx_queue(d->add_data, found, DCKBD_PORT);
146
147 /* Release the key: */
148 d->add_to_rx_queue(d->add_data, KEY_UP, DCKBD_PORT);
149 }
150
151
152 /*
153 * lk201_send_mouse_update_sequence():
154 *
155 * mouse_x, _y, _buttons contains the coordinates on the host's display, the
156 * "goal" of where we want to move.
157 *
158 * d->mouse_x, _y, _buttons contain the last values transmitted to the
159 * emulated machine.
160 */
161 static int lk201_send_mouse_update_sequence(struct lk201_data *d, int mouse_x,
162 int mouse_y, int mouse_buttons, int mouse_fb_nr)
163 {
164 int xsign, xdelta, ysign, ydelta, m;
165
166 xdelta = mouse_x - d->mouse_x;
167 ydelta = mouse_y - d->mouse_y;
168
169 /* If no change, then don't send any update! */
170 if (xdelta == 0 && ydelta == 0 && d->mouse_buttons == mouse_buttons)
171 return 0;
172
173 m = 20;
174
175 if (xdelta > m)
176 xdelta = m;
177 if (xdelta < -m)
178 xdelta = -m;
179 if (ydelta > m)
180 ydelta = m;
181 if (ydelta < -m)
182 ydelta = -m;
183
184 d->mouse_x += xdelta;
185 d->mouse_y += ydelta;
186 d->mouse_buttons = mouse_buttons;
187
188 /*
189 * TODO: Update d->mouse_framebuffer_nr some way!
190 */
191
192 xsign = xdelta < 0? 1 : 0;
193 ysign = ydelta < 0? 1 : 0;
194
195 switch (d->mouse_mode) {
196
197 case 0:
198 /* Do nothing (before the mouse is initialized) */
199 return 0;
200
201 case MOUSE_INCREMENTAL:
202 if (xdelta < 0)
203 xdelta = -xdelta;
204 if (ydelta < 0)
205 ydelta = -ydelta;
206
207 /* Reverse sign of x: (this is needed for some reason) */
208 xsign ^= 1;
209
210 d->add_to_rx_queue(d->add_data, MOUSE_START_FRAME +
211 MOUSE_X_SIGN*xsign + MOUSE_Y_SIGN*ysign +
212 (mouse_buttons & 7), DCMOUSE_PORT);
213 d->add_to_rx_queue(d->add_data, xdelta, DCMOUSE_PORT);
214 d->add_to_rx_queue(d->add_data, ydelta, DCMOUSE_PORT);
215 break;
216
217 default:
218 /* TODO: prompt mode and perhaps more stuff */
219 fatal("[ lk201: mouse mode 0x%02x unknown: TODO ]\n",
220 d->mouse_mode);
221 exit(1);
222 }
223
224 return 1;
225 }
226
227
228 /*
229 * lk201_tick():
230 *
231 * This function should be called "every now and then".
232 * If a key is available from the keyboard, add it to the rx queue.
233 * If other bits are set, an interrupt might need to be caused.
234 */
235 void lk201_tick(struct machine *machine, struct lk201_data *d)
236 {
237 int mouse_x, mouse_y, mouse_buttons, mouse_fb_nr;
238
239 if (console_charavail(d->console_handle)) {
240 unsigned char ch = console_readchar(d->console_handle);
241 if (d->use_fb)
242 lk201_convert_ascii_to_keybcode(d, ch);
243 else {
244 /*
245 * This is ugly, but necessary because different
246 * machines seem to use different ports for their
247 * serial console:
248 *
249 * DEC MIPSMATE 5100 uses the keyboard port.
250 * DECstation 3100 (PMAX) and 5000/2000 (3MAX) use
251 * the printer port.
252 * Others seem to use the comm port.
253 */
254 if (machine->machine_type == MACHINE_PMAX) {
255 switch (machine->machine_subtype) {
256 case MACHINE_DEC_MIPSMATE_5100:
257 d->add_to_rx_queue(d->add_data,
258 ch, DCKBD_PORT);
259 break;
260 case MACHINE_DEC_PMAX_3100:
261 case MACHINE_DEC_3MAX_5000:
262 d->add_to_rx_queue(d->add_data,
263 ch, DCPRINTER_PORT);
264 break;
265 default:
266 d->add_to_rx_queue(d->add_data,
267 ch, DCCOMM_PORT);
268 }
269 } else {
270 d->add_to_rx_queue(d->add_data,
271 ch, DCCOMM_PORT);
272 }
273 }
274 }
275
276 /* Don't do mouse updates if we're running in serial console mode: */
277 if (!d->use_fb)
278 return;
279
280 console_getmouse(&mouse_x, &mouse_y, &mouse_buttons,
281 &mouse_fb_nr);
282
283 lk201_send_mouse_update_sequence(d, mouse_x, mouse_y,
284 mouse_buttons, mouse_fb_nr);
285 }
286
287
288 void lk201_tx_data(struct lk201_data *d, int port, int idata)
289 {
290 switch (port) {
291 case DCKBD_PORT: /* port 0 */
292 if (!d->use_fb) {
293 /* Simply print the character to stdout: */
294 console_putchar(d->console_handle, idata);
295 } else {
296 switch (idata) {
297 case LK_LED_DISABLE: /* 0x11 */
298 break;
299 case LK_LED_ENABLE: /* 0x13 */
300 break;
301 case LK_BELL_ENABLE: /* 0x23 */
302 break;
303 case LED_1:
304 case LED_2:
305 break;
306 case LED_3:
307 break;
308 case LED_4:
309 break;
310 case LK_KBD_ENABLE: /* 0x8b */
311 break;
312 case LED_ALL: /* 0x8f */
313 break;
314 case LK_RING_BELL: /* 0xa7 */
315 break;
316 case 0xab: /* Get Keyboard ID: */
317 /*
318 * First byte:
319 * 1 = LK201
320 * 2 = LK401
321 * 3 = LK443
322 * 4 = LK421
323 *
324 * TODO: What about the second byte?
325 */
326 d->add_to_rx_queue(d->add_data,
327 0x01, DCKBD_PORT);
328 d->add_to_rx_queue(d->add_data,
329 0x22, DCKBD_PORT);
330 break;
331 case LK_DEFAULTS: /* 0xd3 */
332 /* TODO? */
333 break;
334 case 0xfd: /* Keyboard self-test: */
335 /* Suitable return values according to
336 Mach/PMAX source code: */
337 d->add_to_rx_queue(d->add_data,
338 0x01, DCKBD_PORT);
339 d->add_to_rx_queue(d->add_data,
340 0x00, DCKBD_PORT);
341 d->add_to_rx_queue(d->add_data,
342 0x00, DCKBD_PORT);
343 d->add_to_rx_queue(d->add_data,
344 0x00, DCKBD_PORT);
345 break;
346 default:
347 debug("[ lk201: keyboard control: 0x%x ]\n",
348 idata);
349 }
350 }
351 break;
352 case DCMOUSE_PORT: /* port 1 */
353 debug("[ lk201: writing data to MOUSE: 0x%x", idata);
354 if (idata == MOUSE_INCREMENTAL) {
355 d->mouse_mode = MOUSE_INCREMENTAL;
356 } else if (idata == MOUSE_SELF_TEST) {
357 /*
358 * Mouse self-test:
359 *
360 * TODO: Find out if this is correct. The lowest
361 * four bits of the second byte should be
362 * 0x2, according to NetBSD/pmax. But the
363 * other bits and bytes?
364 */
365 debug(" (mouse self-test request)");
366 d->add_to_rx_queue(d->add_data,
367 0xa0 | d->mouse_revision, DCMOUSE_PORT);
368 d->add_to_rx_queue(d->add_data, 0x02, DCMOUSE_PORT);
369 d->add_to_rx_queue(d->add_data, 0x00, DCMOUSE_PORT);
370 d->add_to_rx_queue(d->add_data, 0x00, DCMOUSE_PORT);
371 } else
372 debug(" UNKNOWN byte; TODO");
373 debug(" ]\n");
374 break;
375 case DCCOMM_PORT: /* port 2 */
376 case DCPRINTER_PORT: /* port 3 */
377 /* Simply print the character to stdout: */
378 console_putchar(d->console_handle, idata);
379 }
380 }
381
382
383 /*
384 * lk201_init():
385 *
386 * Initialize lk201 keyboard/mouse settings.
387 */
388 void lk201_init(struct lk201_data *d, int use_fb,
389 void (*add_to_rx_queue)(void *,int,int),
390 int console_handle, void *add_data)
391 {
392 memset(d, 0, sizeof(struct lk201_data));
393
394 d->add_to_rx_queue = add_to_rx_queue;
395 d->add_data = add_data;
396
397 d->use_fb = use_fb;
398 d->mouse_mode = 0;
399 d->mouse_revision = 0; /* 0..15 */
400 d->console_handle = console_handle;
401 }
402
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