/[gxemul]/trunk/src/devices/dev_bt459.c
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Contents of /trunk/src/devices/dev_bt459.c

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Revision 22 - (show annotations)
Mon Oct 8 16:19:37 2007 UTC (13 years, 1 month ago) by dpavlin
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File size: 15467 byte(s)
++ 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 /*
2 * Copyright (C) 2003-2006 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: dev_bt459.c,v 1.63 2006/01/01 13:17:16 debug Exp $
29 *
30 * Brooktree 459 vdac, used by TURBOchannel graphics cards.
31 */
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36
37 #include "cpu.h"
38 #include "devices.h"
39 #include "machine.h"
40 #include "memory.h"
41 #include "misc.h"
42 #include "x11.h"
43
44 #include "bt459.h"
45
46
47 #ifdef WITH_X11
48 #include <X11/Xlib.h>
49 #include <X11/Xutil.h>
50 #endif
51
52 extern int quiet_mode;
53
54
55 /* #define BT459_DEBUG */
56 /* #define WITH_CURSOR_DEBUG */
57 #define BT459_TICK_SHIFT 14
58
59 struct bt459_data {
60 uint32_t bt459_reg[DEV_BT459_NREGS];
61
62 unsigned char cur_addr_hi;
63 unsigned char cur_addr_lo;
64
65 int planes;
66 int type;
67
68 int irq_nr;
69 int interrupts_enable;
70 int interrupt_time;
71 int interrupt_time_reset_value;
72
73 int cursor_x_add;
74 int cursor_y_add;
75
76 int need_to_redraw_whole_screen;
77
78 int need_to_update_cursor_shape;
79 int cursor_on;
80 int cursor_x;
81 int cursor_y;
82 int cursor_xsize;
83 int cursor_ysize;
84
85 int palette_sub_offset; /* 0, 1, or 2 */
86
87 struct vfb_data *vfb_data;
88
89 /*
90 * There is one pointer to the framebuffer's RGB palette,
91 * and then a local copy of the palette. 256 * 3 bytes (r,g,b).
92 * The reason for this is that when we need to blank the screen
93 * (ie video_on = 0), we can set the framebuffer's palette to all
94 * zeroes, but keep our own copy intact, to be reused later again
95 * when the screen is unblanked.
96 */
97 int video_on;
98 unsigned char *rgb_palette; /* 256 * 3 (r,g,b) */
99 unsigned char local_rgb_palette[256 * 3];
100 };
101
102
103 /*
104 * bt459_update_X_cursor():
105 *
106 * This routine takes the color values in the cursor RAM area, and put them
107 * in the framebuffer window's cursor_pixels.
108 *
109 * d->cursor_xsize and ysize are also updated.
110 */
111 static void bt459_update_X_cursor(struct cpu *cpu, struct bt459_data *d)
112 {
113 int i, x,y, xmax=0, ymax=0;
114 int bw_only = 1;
115
116 /* First, let's calculate the size of the cursor: */
117 for (y=0; y<64; y++)
118 for (x=0; x<64; x+=4) {
119 int reg = BT459_REG_CRAM_BASE + y*16 + x/4;
120 unsigned char data = d->bt459_reg[reg];
121
122 if (data)
123 ymax = y;
124
125 for (i=0; i<4; i++) {
126 int color = (data >> (6-2*i)) & 3;
127 if (color != 0)
128 xmax = x + i;
129 if (color != 0 && color != 3)
130 bw_only = 0;
131 }
132 }
133
134 d->cursor_xsize = xmax + 1;
135 d->cursor_ysize = ymax + 1;
136
137 /*
138 * The 'bw_only' hack is because it is nicer to have the b/w
139 * text cursor invert whatever it is standing on, not just overwrite
140 * it with a big white box.
141 *
142 * The following seems to work with NetBSD/OpenBSD/Ultrix/Sprite:
143 * 0 = transparent, 1 and 2 = use the color specified by
144 * BT459_REG_CCOLOR_2, 3 = reverse of color 1/2.
145 */
146
147 #ifdef WITH_X11
148 if (cpu->machine->use_x11 && d->vfb_data->fb_window != NULL) {
149 for (y=0; y<=ymax; y++) {
150 for (x=0; x<=xmax; x+=4) {
151 struct fb_window *win = d->vfb_data->fb_window;
152 int reg = BT459_REG_CRAM_BASE + y*16 + x/4;
153 unsigned char data = d->bt459_reg[reg];
154
155 for (i=0; i<4; i++) {
156 int color = (data >> (6-2*i)) & 3;
157 int pixelvalue;
158
159 if (bw_only) {
160 if (color)
161 pixelvalue =
162 CURSOR_COLOR_INVERT;
163 else
164 pixelvalue = 0;
165 } else {
166 pixelvalue =
167 CURSOR_COLOR_TRANSPARENT;
168 switch (color) {
169 case 1:
170 case 2: pixelvalue = (d->
171 bt459_reg[
172 BT459_REG_CCOLOR_2]
173 >> 4) & 0xf;
174 break;
175 case 3: pixelvalue = 15 -
176 ((d->bt459_reg[
177 BT459_REG_CCOLOR_2]
178 >> 4) & 0xf);
179 break;
180 }
181 }
182
183 win->cursor_pixels[y][x+i] =
184 pixelvalue;
185 #ifdef WITH_CURSOR_DEBUG
186 printf("%i", color);
187 #endif
188 }
189 }
190 #ifdef WITH_CURSOR_DEBUG
191 printf("\n");
192 #endif
193 }
194 #ifdef WITH_CURSOR_DEBUG
195 printf("color 1,2,3 = 0x%02x, 0x%02x, 0x%02x\n",
196 d->bt459_reg[BT459_REG_CCOLOR_1],
197 d->bt459_reg[BT459_REG_CCOLOR_2],
198 d->bt459_reg[BT459_REG_CCOLOR_3]);
199 printf("\n");
200 #endif
201 /*
202 * Make sure the cursor is redrawn, if it is on:
203 *
204 * How does this work? Well, 0 is off, and non-zero is on,
205 * but if the old and new differ, the cursor is redrawn.
206 * (Hopefully this will "never" overflow.)
207 */
208 if (d->cursor_on)
209 d->cursor_on ++;
210 }
211 #endif
212 }
213
214
215 /*
216 * bt459_update_cursor_position():
217 */
218 static void bt459_update_cursor_position(struct bt459_data *d,
219 int old_cursor_on)
220 {
221 int new_cursor_x = (d->bt459_reg[BT459_REG_CXLO] & 255) +
222 ((d->bt459_reg[BT459_REG_CXHI] & 255) << 8) - d->cursor_x_add;
223 int new_cursor_y = (d->bt459_reg[BT459_REG_CYLO] & 255) +
224 ((d->bt459_reg[BT459_REG_CYHI] & 255) << 8) - d->cursor_y_add;
225
226 if (new_cursor_x != d->cursor_x || new_cursor_y != d->cursor_y ||
227 d->cursor_on != old_cursor_on) {
228 int on;
229
230 d->cursor_x = new_cursor_x;
231 d->cursor_y = new_cursor_y;
232
233 if (!quiet_mode)
234 debug("[ bt459: cursor = %03i,%03i ]\n",
235 d->cursor_x, d->cursor_y);
236
237 on = d->cursor_on;
238 if (d->cursor_xsize == 0 || d->cursor_ysize == 0)
239 on = 0;
240
241 dev_fb_setcursor(d->vfb_data, d->cursor_x, d->cursor_y,
242 on, d->cursor_xsize, d->cursor_ysize);
243 }
244 }
245
246
247 /*
248 * dev_bt459_tick():
249 */
250 void dev_bt459_tick(struct cpu *cpu, void *extra)
251 {
252 struct bt459_data *d = extra;
253 int old_cursor_on = d->cursor_on;
254
255 if (d->need_to_update_cursor_shape) {
256 d->need_to_update_cursor_shape = 0;
257 bt459_update_X_cursor(cpu, d);
258 bt459_update_cursor_position(d, old_cursor_on);
259 }
260
261 if (d->need_to_redraw_whole_screen) {
262 d->vfb_data->update_x1 = 0;
263 d->vfb_data->update_x2 = d->vfb_data->xsize - 1;
264 d->vfb_data->update_y1 = 0;
265 d->vfb_data->update_y2 = d->vfb_data->ysize - 1;
266 d->need_to_redraw_whole_screen = 0;
267 }
268
269 /*
270 * Vertical retrace interrupts. (This hack is kind of ugly.)
271 * Once every 'interrupt_time_reset_value', the interrupt is
272 * asserted. It is acked either manually (by someone reading
273 * a normal BT459 register or the Interrupt ack register),
274 * or after another tick has passed. (This is to prevent
275 * lockups from unhandled interrupts.)
276 */
277 if (d->type != BT459_PX && d->interrupts_enable && d->irq_nr > 0) {
278 d->interrupt_time --;
279 if (d->interrupt_time < 0) {
280 d->interrupt_time = d->interrupt_time_reset_value;
281 cpu_interrupt(cpu, d->irq_nr);
282 } else
283 cpu_interrupt_ack(cpu, d->irq_nr);
284 }
285 }
286
287
288 /*
289 * dev_bt459_irq_access():
290 */
291 DEVICE_ACCESS(bt459_irq)
292 {
293 struct bt459_data *d = (struct bt459_data *) extra;
294 uint64_t idata = 0, odata = 0;
295
296 if (writeflag == MEM_WRITE)
297 idata = memory_readmax64(cpu, data, len);
298
299 #ifdef BT459_DEBUG
300 fatal("[ bt459: IRQ ack ]\n");
301 #endif
302
303 d->interrupts_enable = 1;
304 if (d->irq_nr > 0)
305 cpu_interrupt_ack(cpu, d->irq_nr);
306
307 if (writeflag == MEM_READ)
308 memory_writemax64(cpu, data, len, odata);
309
310 return 1;
311 }
312
313
314 /*
315 * dev_bt459_access():
316 */
317 DEVICE_ACCESS(bt459)
318 {
319 struct bt459_data *d = (struct bt459_data *) extra;
320 uint64_t idata = 0, odata = 0;
321 int btaddr, old_cursor_on = d->cursor_on, modified;
322
323 idata = memory_readmax64(cpu, data, len);
324
325 #ifdef BT459_DEBUG
326 if (writeflag == MEM_WRITE)
327 fatal("[ bt459: write to addr 0x%02x: %08x ]\n",
328 (int)relative_addr, (int)idata);
329 #endif
330
331 /*
332 * Vertical retrace interrupts are acked either by
333 * accessing a normal BT459 register, or the irq register,
334 * or by simply "missing" it.
335 */
336 if (d->irq_nr > 0)
337 cpu_interrupt_ack(cpu, d->irq_nr);
338
339 /* ID register is read-only, should always be 0x4a or 0x4a4a4a: */
340 if (d->planes == 24)
341 d->bt459_reg[BT459_REG_ID] = 0x4a4a4a;
342 else {
343 /*
344 * TODO: Is it really 0x4a, or 0x4a0000?
345 * Ultrix panics with a "bad VDAC ID" message if 0x4a
346 * is returned.
347 */
348 d->bt459_reg[BT459_REG_ID] = 0x4a0000;
349 }
350
351 btaddr = ((d->cur_addr_hi << 8) + d->cur_addr_lo) % DEV_BT459_NREGS;
352
353 /* Read from/write to the bt459: */
354 switch (relative_addr) {
355 case 0x00: /* Low byte of address: */
356 if (writeflag == MEM_WRITE) {
357 if (!quiet_mode)
358 debug("[ bt459: write to Low Address Byte, "
359 "0x%02x ]\n", (int)idata);
360 d->cur_addr_lo = idata;
361 d->palette_sub_offset = 0;
362 } else {
363 odata = d->cur_addr_lo;
364 if (!quiet_mode)
365 debug("[ bt459: read from Low Address Byte: "
366 "0x%0x ]\n", (int)odata);
367 }
368 break;
369 case 0x04: /* High byte of address: */
370 if (writeflag == MEM_WRITE) {
371 if (!quiet_mode)
372 debug("[ bt459: write to High Address Byte, "
373 "0x%02x ]\n", (int)idata);
374 d->cur_addr_hi = idata;
375 d->palette_sub_offset = 0;
376 } else {
377 odata = d->cur_addr_hi;
378 if (!quiet_mode)
379 debug("[ bt459: read from High Address Byte: "
380 "0x%0x ]\n", (int)odata);
381 }
382 break;
383 case 0x08: /* Register access: */
384 if (writeflag == MEM_WRITE) {
385 if (!quiet_mode)
386 debug("[ bt459: write to BT459 register "
387 "0x%04x, value 0x%02x ]\n", btaddr,
388 (int)idata);
389 modified = (d->bt459_reg[btaddr] != idata);
390 d->bt459_reg[btaddr] = idata;
391
392 switch (btaddr) {
393 case BT459_REG_CCOLOR_1:
394 case BT459_REG_CCOLOR_2:
395 case BT459_REG_CCOLOR_3:
396 if (modified)
397 d->need_to_update_cursor_shape = 1;
398 break;
399 case BT459_REG_PRM:
400 /*
401 * NetBSD writes 0x00 to this register to
402 * blank the screen (video off), and 0xff
403 * to turn the screen on.
404 */
405 switch (idata & 0xff) {
406 case 0: d->video_on = 0;
407 memset(d->rgb_palette, 0, 256*3);
408 d->need_to_redraw_whole_screen = 1;
409 debug("[ bt459: video OFF ]\n");
410 break;
411 default:d->video_on = 1;
412 memcpy(d->rgb_palette,
413 d->local_rgb_palette, 256*3);
414 d->need_to_redraw_whole_screen = 1;
415 debug("[ bt459: video ON ]\n");
416 }
417 break;
418 case BT459_REG_CCR:
419 /* Cursor control register: */
420 switch (idata & 0xff) {
421 case 0x00: d->cursor_on = 0; break;
422 case 0xc0:
423 case 0xc1: d->cursor_on = 1; break;
424 default:
425 fatal("[ bt459: unimplemented CCR "
426 "value 0x%08x ]\n", (int)idata);
427 }
428 if (modified)
429 d->need_to_update_cursor_shape = 1;
430 break;
431 default:
432 if (btaddr < 0x100)
433 fatal("[ bt459: write to BT459 "
434 "register 0x%04x, value 0x%02x ]\n",
435 btaddr, (int)idata);
436 }
437
438 /* Write to cursor bitmap: */
439 if (btaddr >= BT459_REG_CRAM_BASE && modified)
440 d->need_to_update_cursor_shape = 1;
441 } else {
442 odata = d->bt459_reg[btaddr];
443
444 /* Perhaps this hack is not necessary: */
445 if (btaddr == BT459_REG_ID && len==1)
446 odata = (odata >> 16) & 255;
447
448 if (!quiet_mode)
449 debug("[ bt459: read from BT459 register "
450 "0x%04x, value 0x%02x ]\n", btaddr,
451 (int)odata);
452 }
453
454 /* Go to next register: */
455 d->cur_addr_lo ++;
456 if (d->cur_addr_lo == 0)
457 d->cur_addr_hi ++;
458 break;
459 case 0xc: /* Color map: */
460 if (writeflag == MEM_WRITE) {
461 idata &= 255;
462 if (!quiet_mode)
463 debug("[ bt459: write to BT459 colormap "
464 "0x%04x subaddr %i, value 0x%02x ]\n",
465 btaddr, d->palette_sub_offset, (int)idata);
466
467 if (btaddr < 0x100) {
468 if (d->video_on &&
469 d->local_rgb_palette[(btaddr & 0xff) * 3
470 + d->palette_sub_offset] != idata)
471 d->need_to_redraw_whole_screen = 1;
472
473 /*
474 * Actually, the palette should only be
475 * updated after the third write,
476 * but this should probably work fine too:
477 */
478 d->local_rgb_palette[(btaddr & 0xff) * 3
479 + d->palette_sub_offset] = idata;
480
481 if (d->video_on)
482 d->rgb_palette[(btaddr & 0xff) * 3
483 + d->palette_sub_offset] = idata;
484 }
485 } else {
486 if (btaddr < 0x100)
487 odata = d->local_rgb_palette[(btaddr & 0xff)
488 * 3 + d->palette_sub_offset];
489 if (!quiet_mode)
490 debug("[ bt459: read from BT459 colormap "
491 "0x%04x subaddr %i, value 0x%02x ]\n",
492 btaddr, d->palette_sub_offset, (int)odata);
493 }
494
495 d->palette_sub_offset ++;
496 if (d->palette_sub_offset >= 3) {
497 d->palette_sub_offset = 0;
498
499 d->cur_addr_lo ++;
500 if (d->cur_addr_lo == 0)
501 d->cur_addr_hi ++;
502 }
503
504 break;
505 default:
506 if (writeflag == MEM_WRITE) {
507 debug("[ bt459: unimplemented write to address 0x%x, "
508 "data=0x%02x ]\n", (int)relative_addr, (int)idata);
509 } else {
510 debug("[ bt459: unimplemented read from address "
511 "0x%x ]\n", (int)relative_addr);
512 }
513 }
514
515
516 bt459_update_cursor_position(d, old_cursor_on);
517
518 if (writeflag == MEM_READ)
519 memory_writemax64(cpu, data, len, odata);
520
521 #ifdef BT459_DEBUG
522 if (writeflag == MEM_READ)
523 fatal("[ bt459: read from addr 0x%02x: %08x ]\n",
524 (int)relative_addr, (int)idata);
525 #endif
526
527 return 1;
528 }
529
530
531 /*
532 * dev_bt459_init():
533 */
534 void dev_bt459_init(struct machine *machine, struct memory *mem,
535 uint64_t baseaddr, uint64_t baseaddr_irq, struct vfb_data *vfb_data,
536 int planes, int irq_nr, int type)
537 {
538 struct bt459_data *d = malloc(sizeof(struct bt459_data));
539 if (d == NULL) {
540 fprintf(stderr, "out of memory\n");
541 exit(1);
542 }
543
544 memset(d, 0, sizeof(struct bt459_data));
545
546 d->vfb_data = vfb_data;
547 d->rgb_palette = vfb_data->rgb_palette;
548 d->planes = planes;
549 d->irq_nr = irq_nr;
550 d->type = type;
551 d->cursor_x = -1;
552 d->cursor_y = -1;
553 d->cursor_xsize = d->cursor_ysize = 0; /* anything */
554 d->video_on = 1;
555
556 /*
557 * These offsets are based on those mentioned in NetBSD,
558 * and then adjusted to look good with both NetBSD and
559 * Ultrix:
560 */
561 switch (d->type) {
562 case BT459_PX:
563 d->cursor_x_add = 370;
564 d->cursor_y_add = 37;
565 break;
566 case BT459_BA:
567 d->cursor_x_add = 220;
568 d->cursor_y_add = 35;
569 break;
570 case BT459_BBA:
571 if (vfb_data->xsize == 1280) {
572 /* 1280x1024: */
573 d->cursor_x_add = 368;
574 d->cursor_y_add = 38;
575 } else {
576 /* 1024x864: */
577 d->cursor_x_add = 220;
578 d->cursor_y_add = 35;
579 }
580 break;
581 }
582
583 d->interrupt_time_reset_value = 500;
584
585 memory_device_register(mem, "bt459", baseaddr, DEV_BT459_LENGTH,
586 dev_bt459_access, (void *)d, DM_DEFAULT, NULL);
587
588 if (baseaddr_irq != 0)
589 memory_device_register(mem, "bt459_irq", baseaddr_irq, 0x10000,
590 dev_bt459_irq_access, (void *)d, DM_DEFAULT, NULL);
591
592 machine_add_tickfunction(machine, dev_bt459_tick, d, BT459_TICK_SHIFT);
593 }
594

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