1 |
/* |
2 |
* Copyright (C) 2004-2006 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_jazz.c,v 1.24 2006/03/04 12:38:47 debug Exp $ |
29 |
* |
30 |
* Microsoft Jazz-related stuff (Acer PICA-61, etc). |
31 |
* |
32 |
* TODO/NOTE: This is mostly a quick hack, it doesn't really implement |
33 |
* much of the Jazz architecture. Also, the a0/20 isa-like stuff is |
34 |
* not supposed to be here. |
35 |
*/ |
36 |
|
37 |
#include <stdio.h> |
38 |
#include <stdlib.h> |
39 |
#include <string.h> |
40 |
|
41 |
#include "cpu.h" |
42 |
#include "device.h" |
43 |
#include "devices.h" |
44 |
#include "machine.h" |
45 |
#include "memory.h" |
46 |
#include "misc.h" |
47 |
|
48 |
#include "jazz_r4030_dma.h" |
49 |
#include "pica.h" |
50 |
|
51 |
|
52 |
#define DEV_JAZZ_TICKSHIFT 14 |
53 |
|
54 |
#define PICA_TIMER_IRQ 15 |
55 |
|
56 |
|
57 |
/* |
58 |
* dev_jazz_dma_controller(): |
59 |
*/ |
60 |
size_t dev_jazz_dma_controller(void *dma_controller_data, |
61 |
unsigned char *data, size_t len, int writeflag) |
62 |
{ |
63 |
struct jazz_data *d = (struct jazz_data *) dma_controller_data; |
64 |
struct cpu *cpu = d->cpu; |
65 |
int i, enab_writeflag; |
66 |
int res, ncpy; |
67 |
uint32_t dma_addr; |
68 |
unsigned char tr[sizeof(uint32_t)]; |
69 |
uint32_t phys_addr; |
70 |
|
71 |
#if 0 |
72 |
fatal("[ dev_jazz_dma_controller(): writeflag=%i, len=%i, data =", |
73 |
writeflag, (int)len); |
74 |
for (i=0; i<len; i++) |
75 |
fatal(" %02x", data[i]); |
76 |
fatal(" mode=%08x enable=%08x count=%08x addr=%08x", |
77 |
d->dma0_mode, d->dma0_enable, d->dma0_count, d->dma0_addr); |
78 |
fatal(" table=%08x", |
79 |
d->dma_translation_table_base); |
80 |
fatal(" ]\n"); |
81 |
#endif |
82 |
|
83 |
if (!(d->dma0_enable & R4030_DMA_ENAB_RUN)) { |
84 |
fatal("[ dev_jazz_dma_controller(): dma not enabled? ]\n"); |
85 |
/* return 0; */ |
86 |
} |
87 |
|
88 |
/* R4030 "write" means write to the device, writeflag as the |
89 |
argument to this function means write to memory. */ |
90 |
enab_writeflag = (d->dma0_enable & R4030_DMA_ENAB_WRITE)? 0 : 1; |
91 |
if (enab_writeflag != writeflag) { |
92 |
fatal("[ dev_jazz_dma_controller(): wrong direction? ]\n"); |
93 |
return 0; |
94 |
} |
95 |
|
96 |
dma_addr = d->dma0_addr; |
97 |
i = 0; |
98 |
while (dma_addr < d->dma0_addr + d->dma0_count && i < (int32_t)len) { |
99 |
|
100 |
res = cpu->memory_rw(cpu, cpu->mem, |
101 |
d->dma_translation_table_base + (dma_addr >> 12) * 8, |
102 |
tr, sizeof(tr), 0, PHYSICAL | NO_EXCEPTIONS); |
103 |
|
104 |
if (cpu->byte_order==EMUL_BIG_ENDIAN) |
105 |
phys_addr = (tr[0] << 24) + (tr[1] << 16) + |
106 |
(tr[2] << 8) + tr[3]; |
107 |
else |
108 |
phys_addr = (tr[3] << 24) + (tr[2] << 16) + |
109 |
(tr[1] << 8) + tr[0]; |
110 |
phys_addr &= ~0xfff; /* just in case */ |
111 |
phys_addr += (dma_addr & 0xfff); |
112 |
|
113 |
/* fatal(" !!! dma_addr = %08x, phys_addr = %08x\n", |
114 |
(int)dma_addr, (int)phys_addr); */ |
115 |
|
116 |
/* Speed up the copying by copying 16 or 256 bytes: */ |
117 |
ncpy = 1; |
118 |
if ((phys_addr & 15) == 0 && i + 15 <= (int32_t)len) |
119 |
ncpy = 15; |
120 |
if ((phys_addr & 255) == 0 && i + 255 <= (int32_t)len) |
121 |
ncpy = 255; |
122 |
|
123 |
res = cpu->memory_rw(cpu, cpu->mem, phys_addr, |
124 |
&data[i], ncpy, writeflag, PHYSICAL | NO_EXCEPTIONS); |
125 |
|
126 |
dma_addr += ncpy; |
127 |
i += ncpy; |
128 |
} |
129 |
|
130 |
/* TODO: Is this correct? */ |
131 |
d->dma0_count = 0; |
132 |
|
133 |
return len; |
134 |
} |
135 |
|
136 |
|
137 |
/* |
138 |
* dev_jazz_tick(): |
139 |
*/ |
140 |
void dev_jazz_tick(struct cpu *cpu, void *extra) |
141 |
{ |
142 |
struct jazz_data *d = extra; |
143 |
|
144 |
/* Used by NetBSD/arc and OpenBSD/arc: */ |
145 |
if (d->interval_start > 0 && d->interval > 0 |
146 |
&& (d->int_enable_mask & 2) /* Hm? */ ) { |
147 |
d->interval -= 2; |
148 |
if (d->interval <= 0) { |
149 |
debug("[ jazz: interval timer interrupt ]\n"); |
150 |
cpu_interrupt(cpu, 8 + PICA_TIMER_IRQ); |
151 |
} |
152 |
} |
153 |
|
154 |
/* Linux? */ |
155 |
if (d->jazz_timer_value != 0) { |
156 |
d->jazz_timer_current -= 5; |
157 |
if (d->jazz_timer_current < 1) { |
158 |
d->jazz_timer_current = d->jazz_timer_value; |
159 |
cpu_interrupt(cpu, 6); |
160 |
} |
161 |
} |
162 |
} |
163 |
|
164 |
|
165 |
/* |
166 |
* dev_jazz_access(): |
167 |
*/ |
168 |
DEVICE_ACCESS(jazz) |
169 |
{ |
170 |
struct jazz_data *d = (struct jazz_data *) extra; |
171 |
uint64_t idata = 0, odata = 0; |
172 |
int regnr; |
173 |
|
174 |
if (writeflag == MEM_WRITE) |
175 |
idata = memory_readmax64(cpu, data, len); |
176 |
|
177 |
regnr = relative_addr / sizeof(uint32_t); |
178 |
|
179 |
switch (relative_addr) { |
180 |
case R4030_SYS_CONFIG: |
181 |
if (writeflag == MEM_WRITE) { |
182 |
fatal("[ jazz: unimplemented write to R4030_SYS_CONFIG" |
183 |
", data=0x%08x ]\n", (int)idata); |
184 |
} else { |
185 |
/* Reading the config register should give |
186 |
0x0104 or 0x0410. Why? TODO */ |
187 |
odata = 0x104; |
188 |
} |
189 |
break; |
190 |
case R4030_SYS_TL_BASE: |
191 |
if (writeflag == MEM_WRITE) { |
192 |
d->dma_translation_table_base = idata; |
193 |
} else { |
194 |
odata = d->dma_translation_table_base; |
195 |
} |
196 |
break; |
197 |
case R4030_SYS_TL_LIMIT: |
198 |
if (writeflag == MEM_WRITE) { |
199 |
d->dma_translation_table_limit = idata; |
200 |
} else { |
201 |
odata = d->dma_translation_table_limit; |
202 |
} |
203 |
break; |
204 |
case R4030_SYS_TL_IVALID: |
205 |
/* TODO: Does invalidation actually need to be implemented? */ |
206 |
break; |
207 |
case R4030_SYS_DMA0_REGS: |
208 |
if (writeflag == MEM_WRITE) { |
209 |
d->dma0_mode = idata; |
210 |
} else { |
211 |
odata = d->dma0_mode; |
212 |
} |
213 |
break; |
214 |
case R4030_SYS_DMA0_REGS + 0x8: |
215 |
if (writeflag == MEM_WRITE) { |
216 |
d->dma0_enable = idata; |
217 |
} else { |
218 |
odata = d->dma0_enable; |
219 |
} |
220 |
break; |
221 |
case R4030_SYS_DMA0_REGS + 0x10: |
222 |
if (writeflag == MEM_WRITE) { |
223 |
d->dma0_count = idata; |
224 |
} else { |
225 |
odata = d->dma0_count; |
226 |
} |
227 |
break; |
228 |
case R4030_SYS_DMA0_REGS + 0x18: |
229 |
if (writeflag == MEM_WRITE) { |
230 |
d->dma0_addr = idata; |
231 |
} else { |
232 |
odata = d->dma0_addr; |
233 |
} |
234 |
break; |
235 |
case R4030_SYS_DMA1_REGS: |
236 |
if (writeflag == MEM_WRITE) { |
237 |
d->dma1_mode = idata; |
238 |
} else { |
239 |
odata = d->dma1_mode; |
240 |
} |
241 |
break; |
242 |
case R4030_SYS_ISA_VECTOR: |
243 |
/* ? */ |
244 |
printf("R4030_SYS_ISA_VECTOR: w=%i\n", writeflag); |
245 |
{ |
246 |
uint32_t x = d->isa_int_asserted |
247 |
& d->isa_int_enable_mask; |
248 |
odata = 0; |
249 |
while (odata < 16) { |
250 |
if (x & (1 << odata)) |
251 |
break; |
252 |
odata ++; |
253 |
} |
254 |
if (odata >= 16) |
255 |
odata = 0; |
256 |
} |
257 |
break; |
258 |
case R4030_SYS_IT_VALUE: /* Interval timer reload value */ |
259 |
if (writeflag == MEM_WRITE) { |
260 |
d->interval_start = idata; |
261 |
d->interval = d->interval_start; |
262 |
} else |
263 |
odata = d->interval_start; |
264 |
break; |
265 |
case R4030_SYS_IT_STAT: |
266 |
/* Accessing this word seems to acknowledge interrupts? */ |
267 |
cpu_interrupt_ack(cpu, 8 + PICA_TIMER_IRQ); |
268 |
if (writeflag == MEM_WRITE) |
269 |
d->interval = idata; |
270 |
else |
271 |
odata = d->interval; |
272 |
d->interval = d->interval_start; |
273 |
break; |
274 |
case R4030_SYS_EXT_IMASK: |
275 |
if (writeflag == MEM_WRITE) { |
276 |
d->int_enable_mask = idata; |
277 |
/* Do a "nonsense" interrupt recalibration: */ |
278 |
cpu_interrupt_ack(cpu, 8); |
279 |
} else |
280 |
odata = d->int_enable_mask; |
281 |
break; |
282 |
default: |
283 |
if (writeflag == MEM_WRITE) { |
284 |
fatal("[ jazz: unimplemented write to address 0x%x" |
285 |
", data=0x%02x ]\n", (int)relative_addr, |
286 |
(int)idata); |
287 |
} else { |
288 |
fatal("[ jazz: unimplemented read from address 0x%x" |
289 |
" ]\n", (int)relative_addr); |
290 |
} |
291 |
} |
292 |
|
293 |
if (writeflag == MEM_READ) |
294 |
memory_writemax64(cpu, data, len, odata); |
295 |
|
296 |
return 1; |
297 |
} |
298 |
|
299 |
|
300 |
/* |
301 |
* dev_jazz_led_access(): |
302 |
*/ |
303 |
DEVICE_ACCESS(jazz_led) |
304 |
{ |
305 |
struct jazz_data *d = (struct jazz_data *) extra; |
306 |
uint64_t idata = 0, odata = 0; |
307 |
int regnr; |
308 |
|
309 |
if (writeflag == MEM_WRITE) |
310 |
idata = memory_readmax64(cpu, data, len); |
311 |
|
312 |
regnr = relative_addr / sizeof(uint32_t); |
313 |
|
314 |
switch (relative_addr) { |
315 |
case 0: |
316 |
if (writeflag == MEM_WRITE) { |
317 |
d->led = idata; |
318 |
debug("[ jazz_led: write to LED: 0x%02x ]\n", |
319 |
(int)idata); |
320 |
} else { |
321 |
odata = d->led; |
322 |
} |
323 |
break; |
324 |
default: |
325 |
if (writeflag == MEM_WRITE) { |
326 |
fatal("[ jazz_led: unimplemented write to address 0x%x" |
327 |
", data=0x%02x ]\n", (int)relative_addr, |
328 |
(int)idata); |
329 |
} else { |
330 |
fatal("[ jazz_led: unimplemented read from address 0x%x" |
331 |
" ]\n", (int)relative_addr); |
332 |
} |
333 |
} |
334 |
|
335 |
if (writeflag == MEM_READ) |
336 |
memory_writemax64(cpu, data, len, odata); |
337 |
|
338 |
return 1; |
339 |
} |
340 |
|
341 |
|
342 |
/* |
343 |
* dev_jazz_a0_access(): |
344 |
* |
345 |
* ISA interrupt stuff, high 8 interrupts. |
346 |
* |
347 |
* TODO: use isa8 stuff instead! |
348 |
*/ |
349 |
DEVICE_ACCESS(jazz_a0) |
350 |
{ |
351 |
struct jazz_data *d = (struct jazz_data *) extra; |
352 |
uint64_t idata = 0, odata = 0; |
353 |
|
354 |
if (writeflag == MEM_WRITE) |
355 |
idata = memory_readmax64(cpu, data, len); |
356 |
|
357 |
switch (relative_addr) { |
358 |
case 0: |
359 |
if (writeflag == MEM_WRITE) { |
360 |
/* TODO: only if idata == 0x20? */ |
361 |
d->isa_int_asserted &= 0xff; |
362 |
cpu_interrupt_ack(cpu, 8 + 0); |
363 |
} |
364 |
break; |
365 |
case 1: |
366 |
if (writeflag == MEM_WRITE) { |
367 |
idata = ((idata ^ 0xff) & 0xff) << 8; |
368 |
d->isa_int_enable_mask = |
369 |
(d->isa_int_enable_mask & 0xff) | idata; |
370 |
debug("[ jazz_isa_a0: setting isa_int_enable_mask " |
371 |
"to 0x%04x ]\n", (int)d->isa_int_enable_mask); |
372 |
/* Recompute interrupt stuff: */ |
373 |
cpu_interrupt_ack(cpu, 8 + 0); |
374 |
} else |
375 |
odata = d->isa_int_enable_mask; |
376 |
break; |
377 |
default: |
378 |
if (writeflag == MEM_WRITE) { |
379 |
fatal("[ jazz_isa_a0: unimplemented write to " |
380 |
"address 0x%x, data=0x%02x ]\n", |
381 |
(int)relative_addr, (int)idata); |
382 |
} else { |
383 |
fatal("[ jazz_isa_a0: unimplemented read from " |
384 |
"address 0x%x ]\n", (int)relative_addr); |
385 |
} |
386 |
} |
387 |
|
388 |
if (writeflag == MEM_READ) |
389 |
memory_writemax64(cpu, data, len, odata); |
390 |
|
391 |
return 1; |
392 |
} |
393 |
|
394 |
|
395 |
/* |
396 |
* dev_jazz_20_access(): |
397 |
* |
398 |
* ISA interrupt stuff, low 8 interrupts. |
399 |
*/ |
400 |
DEVICE_ACCESS(jazz_20) |
401 |
{ |
402 |
struct jazz_data *d = (struct jazz_data *) extra; |
403 |
uint64_t idata = 0, odata = 0; |
404 |
|
405 |
if (writeflag == MEM_WRITE) |
406 |
idata = memory_readmax64(cpu, data, len); |
407 |
|
408 |
switch (relative_addr) { |
409 |
case 0: |
410 |
if (writeflag == MEM_WRITE) { |
411 |
/* TODO: only if idata == 0x20? */ |
412 |
d->isa_int_asserted &= 0xff00; |
413 |
cpu_interrupt_ack(cpu, 8 + 0); |
414 |
} |
415 |
break; |
416 |
case 1: |
417 |
if (writeflag == MEM_WRITE) { |
418 |
idata = (idata ^ 0xff) & 0xff; |
419 |
d->isa_int_enable_mask = |
420 |
(d->isa_int_enable_mask & 0xff00) | idata; |
421 |
debug("[ jazz_isa_20: setting isa_int_enable_mask " |
422 |
"to 0x%04x ]\n", (int)d->isa_int_enable_mask); |
423 |
/* Recompute interrupt stuff: */ |
424 |
cpu_interrupt_ack(cpu, 8 + 0); |
425 |
} else |
426 |
odata = d->isa_int_enable_mask; |
427 |
break; |
428 |
default: |
429 |
if (writeflag == MEM_WRITE) { |
430 |
fatal("[ jazz_isa_20: unimplemented write to " |
431 |
"address 0x%x, data=0x%02x ]\n", |
432 |
(int)relative_addr, (int)idata); |
433 |
} else { |
434 |
fatal("[ jazz_isa_20: unimplemented read from " |
435 |
"address 0x%x ]\n", (int)relative_addr); |
436 |
} |
437 |
} |
438 |
|
439 |
if (writeflag == MEM_READ) |
440 |
memory_writemax64(cpu, data, len, odata); |
441 |
|
442 |
return 1; |
443 |
} |
444 |
|
445 |
|
446 |
/* |
447 |
* dev_jazz_jazzio_access(): |
448 |
* |
449 |
* See jazzio_intr() in NetBSD's |
450 |
* /usr/src/sys/arch/arc/jazz/jazzio.c for more info. |
451 |
*/ |
452 |
DEVICE_ACCESS(jazz_jazzio) |
453 |
{ |
454 |
struct jazz_data *d = (struct jazz_data *) extra; |
455 |
uint64_t idata = 0, odata = 0; |
456 |
int i, v; |
457 |
|
458 |
if (writeflag == MEM_WRITE) |
459 |
idata = memory_readmax64(cpu, data, len); |
460 |
|
461 |
switch (relative_addr) { |
462 |
case 0: |
463 |
v = 0; |
464 |
for (i=0; i<15; i++) { |
465 |
if (d->int_asserted & (1<<i)) { |
466 |
v = i+1; |
467 |
break; |
468 |
} |
469 |
} |
470 |
odata = v << 2; |
471 |
break; |
472 |
case 2: |
473 |
/* TODO: Should this be here?! */ |
474 |
|
475 |
if (writeflag == MEM_WRITE) |
476 |
d->jazz_timer_value = idata; |
477 |
else |
478 |
odata = d->jazz_timer_value; |
479 |
break; |
480 |
default: |
481 |
if (writeflag == MEM_WRITE) { |
482 |
fatal("[ jazzio: unimplemented write to address 0x%x" |
483 |
", data=0x%02x ]\n", (int)relative_addr, |
484 |
(int)idata); |
485 |
} else { |
486 |
fatal("[ jazzio: unimplemented read from address 0x%x" |
487 |
" ]\n", (int)relative_addr); |
488 |
} |
489 |
} |
490 |
|
491 |
/* This is needed by Windows NT during startup: */ |
492 |
cpu_interrupt_ack(cpu, 3); |
493 |
|
494 |
if (writeflag == MEM_READ) |
495 |
memory_writemax64(cpu, data, len, odata); |
496 |
|
497 |
return 1; |
498 |
} |
499 |
|
500 |
|
501 |
DEVINIT(jazz) |
502 |
{ |
503 |
struct jazz_data *d = malloc(sizeof(struct jazz_data)); |
504 |
if (d == NULL) { |
505 |
fprintf(stderr, "out of memory\n"); |
506 |
exit(1); |
507 |
} |
508 |
memset(d, 0, sizeof(struct jazz_data)); |
509 |
|
510 |
d->cpu = devinit->machine->cpus[0]; /* TODO */ |
511 |
|
512 |
d->isa_int_enable_mask = 0xffff; |
513 |
|
514 |
memory_device_register(devinit->machine->memory, "jazz", |
515 |
devinit->addr, DEV_JAZZ_LENGTH, |
516 |
dev_jazz_access, (void *)d, DM_DEFAULT, NULL); |
517 |
|
518 |
/* At least for Magnum and Pica-61: */ |
519 |
memory_device_register(devinit->machine->memory, "jazz_led", |
520 |
0x08000f000ULL, 4, dev_jazz_led_access, (void *)d, |
521 |
DM_DEFAULT, NULL); |
522 |
|
523 |
memory_device_register(devinit->machine->memory, "jazz_isa_20", |
524 |
0x90000020ULL, 2, dev_jazz_20_access, (void *)d, DM_DEFAULT, NULL); |
525 |
|
526 |
memory_device_register(devinit->machine->memory, "jazz_isa_a0", |
527 |
0x900000a0ULL, 2, dev_jazz_a0_access, (void *)d, DM_DEFAULT, NULL); |
528 |
|
529 |
memory_device_register(devinit->machine->memory, "pica_jazzio", |
530 |
0xf0000000ULL, 4, dev_jazz_jazzio_access, (void *)d, |
531 |
DM_DEFAULT, NULL); |
532 |
|
533 |
machine_add_tickfunction(devinit->machine, dev_jazz_tick, |
534 |
d, DEV_JAZZ_TICKSHIFT, 0.0); |
535 |
|
536 |
devinit->return_ptr = d; |
537 |
|
538 |
return 1; |
539 |
} |
540 |
|