499bf01c |
1 | /* |
2 | * GINGE - GINGE Is Not Gp2x Emulator |
fea1465c |
3 | * (C) notaz, 2010-2011,2016 |
499bf01c |
4 | * |
5 | * This work is licensed under the MAME license, see COPYING file for details. |
6 | */ |
830ba1bf |
7 | // a "gentle" reminder |
8 | #ifdef __ARM_EABI__ |
9 | #error loader is meant to be OABI! |
10 | #endif |
11913091 |
11 | #include <stdio.h> |
12 | #include <stdlib.h> |
3d295a9f |
13 | #include <string.h> |
c1ffd5ba |
14 | #include <alloca.h> |
158ddd8d |
15 | #include <ctype.h> |
11913091 |
16 | #include <sys/types.h> |
17 | #include <sys/stat.h> |
18 | #include <fcntl.h> |
19 | #include <sys/mman.h> |
20 | #include <sys/types.h> |
21 | #include <unistd.h> |
22 | #include <signal.h> |
23 | #include <asm/ucontext.h> |
c1ffd5ba |
24 | #include <pthread.h> |
25 | #include <errno.h> |
26 | #include <time.h> |
27 | #include <sys/resource.h> |
7fd42181 |
28 | #include <sys/ioctl.h> |
29 | #include <linux/soundcard.h> |
30 | #include <linux/fb.h> |
11913091 |
31 | |
32 | #include "header.h" |
7fd42181 |
33 | #include "../common/host_fb.h" |
34 | #include "../common/cmn.h" |
86418a84 |
35 | #include "sys_cacheflush.h" |
7fd42181 |
36 | #include "realfuncs.h" |
11913091 |
37 | |
3d3fa63b |
38 | #if (DBG & 2) && !(DBG & 4) |
7fd42181 |
39 | #define LOG_IO_UNK |
40 | #endif |
3d3fa63b |
41 | #if (DBG & 4) |
7fd42181 |
42 | #define LOG_IO |
43 | #endif |
6720e4e4 |
44 | //#define LOG_SEGV |
45 | |
46 | #ifdef LOG_IO |
47 | #define iolog log_io |
48 | #else |
86418a84 |
49 | #define iolog(...) |
6720e4e4 |
50 | #endif |
51 | |
c1ffd5ba |
52 | #ifdef LOG_IO_UNK |
6720e4e4 |
53 | #define iolog_unh log_io |
54 | #else |
55 | #define iolog_unh(...) |
56 | #endif |
57 | |
58 | #ifdef LOG_SEGV |
59 | #define segvlog printf |
60 | #else |
0881206b |
61 | #define segvlog(...) |
6720e4e4 |
62 | #endif |
63 | |
c1ffd5ba |
64 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
6720e4e4 |
65 | #include "mmsp2-regs.h" |
66 | #endif |
11913091 |
67 | |
3d3fa63b |
68 | typedef unsigned long long u64; |
11913091 |
69 | typedef unsigned int u32; |
70 | typedef unsigned short u16; |
71 | typedef unsigned char u8; |
72 | |
c1ffd5ba |
73 | static pthread_mutex_t fb_mutex = PTHREAD_MUTEX_INITIALIZER; |
74 | static pthread_cond_t fb_cond = PTHREAD_COND_INITIALIZER; |
75 | |
3d295a9f |
76 | static struct { |
77 | u32 dstctrl; |
78 | u32 dstaddr; |
79 | u32 dststride; |
80 | u32 srcctrl; |
81 | u32 srcaddr; // |
82 | u32 srcstride; |
83 | u32 srcforcolor; |
84 | u32 srcbackcolor; |
85 | u32 patctrl; // |
86 | u32 patforcolor; |
87 | u32 patbackcolor; |
88 | u32 size; |
89 | u32 ctrl; // |
90 | u32 run; |
91 | u32 intc; |
92 | u32 srcfifo; |
93 | } blitter; |
94 | |
0881206b |
95 | #define SRCCTRL_INVIDEO (1 << 8) |
96 | #define SRCCTRL_SRCENB (1 << 7) |
97 | #define CTRL_TRANSPARENCYENB (1 << 11) |
98 | |
3d295a9f |
99 | static struct { |
7000b522 |
100 | // mmsp2 |
6720e4e4 |
101 | u16 mlc_stl_cntl; |
3d295a9f |
102 | union { |
7000b522 |
103 | u32 mlc_stl_adr; // mlcaddress for pollux |
3d295a9f |
104 | struct { |
6720e4e4 |
105 | u16 mlc_stl_adrl; |
106 | u16 mlc_stl_adrh; |
3d295a9f |
107 | }; |
108 | }; |
6720e4e4 |
109 | u16 mlc_stl_pallt_a; |
110 | union { |
111 | u16 mlc_stl_pallt_d[256*2]; |
112 | u32 mlc_stl_pallt_d32[256]; |
113 | }; |
114 | |
7000b522 |
115 | // pollux |
116 | u32 mlccontrol; |
117 | u16 mlcpalette[256]; |
118 | |
6720e4e4 |
119 | // state |
3d3fa63b |
120 | void *umem; |
6720e4e4 |
121 | u32 old_mlc_stl_adr; |
7000b522 |
122 | u32 btn_state; // as seen through /dev/GPIO: 0PVdVu YXBA RLSeSt 0Ri0Dn 0Le0Up |
123 | struct { |
124 | u32 width, height; |
125 | u32 stride; |
126 | u32 bpp; |
127 | u32 dirty_pal:2; |
128 | } v; |
3d295a9f |
129 | } mmsp2; |
7000b522 |
130 | #define pollux mmsp2 // so that code doesn't look that weird |
131 | enum { |
132 | DIRTY_PAL_MMSP2 = 1, |
133 | DIRTY_PAL_POLLUX = 2, |
134 | }; |
3d295a9f |
135 | |
11913091 |
136 | |
c1ffd5ba |
137 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
6720e4e4 |
138 | static void log_io(const char *pfx, u32 a, u32 d, int size) |
139 | { |
140 | const char *fmt, *reg = ""; |
141 | switch (size) { |
c1ffd5ba |
142 | case 8: fmt = "%s %08x %02x %s\n"; d &= 0xff; break; |
143 | case 32: fmt = "%s %08x %08x %s\n"; break; |
144 | default: fmt = "%s %08x %04x %s\n"; d &= 0xffff; break; |
6720e4e4 |
145 | } |
146 | |
147 | if ((a & ~0xffff) == 0x7f000000) |
148 | reg = regnames[a & 0xffff]; |
149 | |
150 | printf(fmt, pfx, a, d, reg); |
151 | } |
152 | #endif |
153 | |
0881206b |
154 | static void memset16(void *dst, u32 pattern, int count) |
155 | { |
156 | u32 *dl; |
157 | u16 *d; |
158 | |
159 | d = (u16 *)((long)dst & ~1); |
160 | if ((long)d & 2) { |
161 | *d++ = pattern; |
162 | count--; |
163 | } |
164 | dl = (void *)d; |
165 | pattern |= pattern << 16; |
166 | |
167 | while (count >= 2) { |
168 | *dl++ = pattern; |
169 | count -= 2; |
170 | } |
171 | if (count) |
172 | *(u16 *)dl = pattern; |
173 | } |
174 | |
175 | static void blt_tr(void *dst, void *src, u32 trc, int w) |
176 | { |
177 | u16 *d = (u16 *)((long)dst & ~1); |
178 | u16 *s = (u16 *)((long)src & ~1); |
179 | |
180 | // XXX: optimize |
181 | for (; w > 0; d++, s++, w--) |
182 | if (*s != trc) |
183 | *d = *s; |
184 | } |
185 | |
186 | #define dump_blitter() \ |
187 | { \ |
188 | u32 *r = &blitter.dstctrl; \ |
189 | int i; \ |
190 | for (i = 0; i < 4*4; i++, r++) { \ |
191 | printf("%08x ", *r); \ |
192 | if ((i & 3) == 3) \ |
193 | printf("\n"); \ |
194 | } \ |
195 | } |
196 | |
6720e4e4 |
197 | static void *uppermem_lookup(u32 addr, u8 **mem_end) |
11913091 |
198 | { |
3d3fa63b |
199 | // XXX: maybe support mirroring? |
200 | if ((addr & 0xfe000000) != 0x02000000) |
201 | return NULL; |
3d295a9f |
202 | |
3d3fa63b |
203 | *mem_end = (u8 *)mmsp2.umem + 0x02000000; |
204 | return (u8 *)mmsp2.umem - 0x02000000 + addr; |
11913091 |
205 | } |
206 | |
3d295a9f |
207 | static void blitter_do(void) |
11913091 |
208 | { |
0881206b |
209 | u8 *dst, *dste, *src = NULL, *srce = NULL; |
3d295a9f |
210 | int w, h, sstrd, dstrd; |
6720e4e4 |
211 | int to_screen = 0; |
dc90c02d |
212 | u32 bpp, addr; |
3d295a9f |
213 | |
214 | w = blitter.size & 0x7ff; |
215 | h = (blitter.size >> 16) & 0x7ff; |
216 | sstrd = blitter.srcstride; |
217 | dstrd = blitter.dststride; |
218 | |
0881206b |
219 | // XXX: need to confirm this.. |
220 | addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3); |
c1ffd5ba |
221 | |
dc90c02d |
222 | // use dst bpp.. How does it do blits with different src bpp? |
223 | bpp = (blitter.dstctrl & 0x20) ? 16 : 8; |
224 | |
c1ffd5ba |
225 | // maybe the screen? |
dc90c02d |
226 | if (((w == 320 && h == 240) || // blit whole screen |
227 | (w * h >= 320*240/2)) && // ..or at least half of the area |
228 | mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2) |
c1ffd5ba |
229 | to_screen = 1; |
230 | |
231 | dst = uppermem_lookup(addr, &dste); |
0881206b |
232 | |
233 | // XXX: assume fill if no SRCENB, but it could be pattern blit.. |
234 | if (blitter.srcctrl & SRCCTRL_SRCENB) { |
235 | if (!(blitter.srcctrl & SRCCTRL_INVIDEO)) |
236 | goto bad_blit; |
237 | |
238 | addr = (blitter.srcaddr & ~3) | ((blitter.srcctrl & 0x1f) >> 3); |
c1ffd5ba |
239 | src = uppermem_lookup(addr, &srce); |
0881206b |
240 | if (src == NULL) |
241 | goto bad_blit; |
242 | |
243 | if (src + sstrd * h > srce) { |
6720e4e4 |
244 | err("blit %08x->%08x %dx%d did not fit src\n", |
0881206b |
245 | blitter.srcaddr, blitter.dstaddr, w, h); |
246 | h = (srce - src) / sstrd; |
247 | } |
3d295a9f |
248 | } |
249 | |
dc90c02d |
250 | if (dst == NULL) |
251 | goto bad_blit; |
252 | |
3d295a9f |
253 | if (dst + dstrd * h > dste) { |
6720e4e4 |
254 | err("blit %08x->%08x %dx%d did not fit dst\n", |
3d295a9f |
255 | blitter.srcaddr, blitter.dstaddr, w, h); |
256 | h = (dste - dst) / dstrd; |
257 | } |
258 | |
0881206b |
259 | if (src != NULL) { |
260 | // copy |
dc90c02d |
261 | if (bpp == 16 && (blitter.ctrl & CTRL_TRANSPARENCYENB)) { |
0881206b |
262 | u32 trc = blitter.ctrl >> 16; |
263 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
264 | blt_tr(dst, src, trc, w); |
265 | } |
266 | else { |
267 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
dc90c02d |
268 | memcpy(dst, src, w * bpp / 8); |
0881206b |
269 | } |
3d295a9f |
270 | } |
0881206b |
271 | else { |
272 | // fill. Assume the pattern is cleared and bg color is used |
273 | u32 bgc = blitter.patbackcolor & 0xffff; |
dc90c02d |
274 | if (bpp == 16) { |
275 | for (; h > 0; h--, dst += dstrd) |
276 | memset16(dst, bgc, w); |
277 | } |
278 | else { |
279 | for (; h > 0; h--, dst += dstrd) |
280 | memset(dst, bgc, w); // bgc? |
281 | } |
0881206b |
282 | } |
6720e4e4 |
283 | |
284 | if (to_screen) |
c1ffd5ba |
285 | pthread_cond_signal(&fb_cond); |
0881206b |
286 | return; |
3d295a9f |
287 | |
0881206b |
288 | bad_blit: |
6720e4e4 |
289 | err("blit %08x->%08x %dx%d translated to %p->%p\n", |
0881206b |
290 | blitter.srcaddr, blitter.dstaddr, w, h, src, dst); |
291 | dump_blitter(); |
3d295a9f |
292 | } |
293 | |
4d045184 |
294 | // FIXME: pass real dimensions to blitters |
7000b522 |
295 | static void mlc_flip(void *src, int bpp, int stride) |
6720e4e4 |
296 | { |
6ca08393 |
297 | static int old_bpp; |
6720e4e4 |
298 | |
4d045184 |
299 | // only pass pal to host if it's dirty |
7000b522 |
300 | if (bpp <= 8 && mmsp2.v.dirty_pal) { |
301 | if (mmsp2.v.dirty_pal == DIRTY_PAL_MMSP2) |
302 | host_video_update_pal32(mmsp2.mlc_stl_pallt_d32); |
303 | else |
304 | host_video_update_pal16(mmsp2.mlcpalette); |
305 | mmsp2.v.dirty_pal = 0; |
6720e4e4 |
306 | } |
307 | |
6ca08393 |
308 | if (bpp != old_bpp) { |
309 | host_video_change_bpp(bpp); |
310 | old_bpp = bpp; |
311 | } |
312 | |
6720e4e4 |
313 | switch (bpp) { |
314 | case 4: |
7000b522 |
315 | host_video_blit4(src, 320, 240, stride); |
6720e4e4 |
316 | break; |
317 | |
318 | case 8: |
7000b522 |
319 | host_video_blit8(src, 320, 240, stride); |
6720e4e4 |
320 | break; |
321 | |
322 | case 16: |
7000b522 |
323 | host_video_blit16(src, 320, 240, stride); |
6720e4e4 |
324 | break; |
325 | |
326 | case 24: |
327 | // TODO |
328 | break; |
329 | } |
6720e4e4 |
330 | } |
331 | |
c1ffd5ba |
332 | #define ts_add_nsec(ts, ns) { \ |
333 | ts.tv_nsec += ns; \ |
334 | if (ts.tv_nsec >= 1000000000) { \ |
335 | ts.tv_sec++; \ |
336 | ts.tv_nsec -= 1000000000; \ |
337 | } \ |
338 | } |
339 | |
db9191ed |
340 | static int fb_sync_thread_paused; |
341 | |
c1ffd5ba |
342 | static void *fb_sync_thread(void *arg) |
343 | { |
344 | int invalid_fb_addr = 1; |
345 | int manual_refresh = 0; |
7000b522 |
346 | int frame_counter = 0; |
c1ffd5ba |
347 | struct timespec ts; |
348 | int ret, wait_ret; |
349 | |
350 | //ret = pthread_setschedprio(pthread_self(), -1); |
351 | //log("pthread_setschedprio %d\n", ret); |
352 | //ret = setpriority(PRIO_PROCESS, 0, -1); |
353 | //log("setpriority %d\n", ret); |
354 | |
355 | ret = clock_gettime(CLOCK_REALTIME, &ts); |
356 | if (ret != 0) { |
357 | perror(PFX "clock_gettime"); |
358 | exit(1); |
359 | } |
360 | |
361 | while (1) { |
362 | u8 *gp2x_fb, *gp2x_fb_end; |
c1ffd5ba |
363 | |
364 | ret = pthread_mutex_lock(&fb_mutex); |
365 | wait_ret = pthread_cond_timedwait(&fb_cond, &fb_mutex, &ts); |
366 | ret |= pthread_mutex_unlock(&fb_mutex); |
dc90c02d |
367 | |
c1ffd5ba |
368 | if (ret != 0) { |
369 | err("fb_thread: mutex error: %d\n", ret); |
370 | sleep(1); |
7000b522 |
371 | goto check_keys; |
c1ffd5ba |
372 | } |
373 | if (wait_ret != 0 && wait_ret != ETIMEDOUT) { |
374 | err("fb_thread: cond error: %d\n", wait_ret); |
375 | sleep(1); |
7000b522 |
376 | goto check_keys; |
c1ffd5ba |
377 | } |
db9191ed |
378 | if (fb_sync_thread_paused) { |
379 | ts_add_nsec(ts, 100000000); |
7000b522 |
380 | goto check_keys; |
db9191ed |
381 | } |
c1ffd5ba |
382 | |
383 | if (wait_ret != ETIMEDOUT) { |
384 | clock_gettime(CLOCK_REALTIME, &ts); |
385 | ts_add_nsec(ts, 50000000); |
386 | manual_refresh++; |
387 | if (manual_refresh == 2) |
4d045184 |
388 | dbg("fb_thread: switch to manual refresh\n"); |
c1ffd5ba |
389 | } else { |
390 | ts_add_nsec(ts, 16666667); |
391 | if (manual_refresh > 1) |
4d045184 |
392 | dbg("fb_thread: switch to auto refresh\n"); |
c1ffd5ba |
393 | manual_refresh = 0; |
394 | } |
395 | |
c1ffd5ba |
396 | gp2x_fb = uppermem_lookup(mmsp2.mlc_stl_adr, &gp2x_fb_end); |
7000b522 |
397 | if (gp2x_fb == NULL || gp2x_fb + 320*240 * mmsp2.v.bpp / 8 > gp2x_fb_end) { |
c1ffd5ba |
398 | if (!invalid_fb_addr) { |
399 | err("fb_thread: %08x is out of range\n", mmsp2.mlc_stl_adr); |
400 | invalid_fb_addr = 1; |
401 | } |
402 | continue; |
403 | } |
404 | |
7000b522 |
405 | invalid_fb_addr = 0; |
406 | mlc_flip(gp2x_fb, mmsp2.v.bpp, mmsp2.v.stride); |
407 | |
408 | frame_counter++; |
409 | if (frame_counter & 0x0f) |
410 | continue; |
411 | |
412 | check_keys: |
413 | // this is to check for kill key, in case main thread hung |
414 | // or something else went wrong. |
415 | pollux.btn_state = host_read_btns(); |
c1ffd5ba |
416 | } |
417 | } |
418 | |
db9191ed |
419 | static void fb_thread_pause(void) |
420 | { |
421 | fb_sync_thread_paused = 1; |
422 | // wait until it finishes last refresh |
423 | // that it might be doing now |
424 | usleep(10000); |
425 | } |
426 | |
427 | static void fb_thread_resume(void) |
428 | { |
429 | fb_sync_thread_paused = 0; |
430 | } |
431 | |
7000b522 |
432 | static u32 xread32_io_cmn(u32 a, u32 *handled) |
433 | { |
434 | u32 d = 0; |
435 | |
436 | *handled = 1; |
437 | switch (a) { |
438 | // Wiz stuff |
439 | case 0x402c: // MLCVSTRIDE0 |
440 | case 0x4060: // MLCVSTRIDE1 |
441 | d = pollux.v.stride; |
442 | break; |
443 | case 0x4038: // MLCADDRESS0 |
444 | case 0x406c: // MLCADDRESS1 |
445 | d = pollux.mlc_stl_adr; |
446 | break; |
447 | // wiz_lib reads: |
448 | // ???? ???? YXBA DURiLe ???? VdVuMS LR?? ???? |
449 | // | GPIOC[31:16] | GPIOB[31:16] | |
450 | case 0xa058: // GPIOBPAD |
830ba1bf |
451 | d = (pollux.btn_state >> 1) & 0x0100; |
452 | d |= (pollux.btn_state << 1) & 0x0200; |
7000b522 |
453 | d |= (pollux.btn_state >> 3) & 0x0080; |
454 | d |= (pollux.btn_state >> 5) & 0x0040; |
455 | d |= (pollux.btn_state >> 6) & 0x0c00; |
456 | d <<= 16; |
457 | d = ~d; |
458 | break; |
459 | case 0xa098: // GPIOCPAD |
460 | pollux.btn_state = host_read_btns(); |
461 | d = (pollux.btn_state >> 8) & 0x00f0; |
462 | d |= (pollux.btn_state >> 1) & 0x0008; |
463 | d |= (pollux.btn_state << 2) & 0x0004; |
464 | d |= (pollux.btn_state >> 5) & 0x0002; |
465 | d |= (pollux.btn_state >> 2) & 0x0001; |
466 | d <<= 16; |
467 | d = ~d; |
468 | break; |
469 | default: |
470 | *handled = 0; |
471 | break; |
472 | } |
473 | |
474 | return d; |
475 | } |
476 | |
3d295a9f |
477 | static u32 xread8(u32 a) |
478 | { |
6720e4e4 |
479 | iolog("r8 ", a, 0, 8); |
480 | iolog_unh("r8 ", a, 0, 8); |
3d295a9f |
481 | return 0; |
11913091 |
482 | } |
483 | |
484 | static u32 xread16(u32 a) |
485 | { |
6720e4e4 |
486 | static u32 fudge, old_a; |
487 | u32 d = 0, t; |
488 | |
489 | if ((a & 0xffff0000) == 0x7f000000) { |
490 | u32 a_ = a & 0xffff; |
491 | switch (a_) { |
492 | case 0x0910: // FPLL |
493 | case 0x0912: |
494 | d = 0x9407; |
495 | break; |
496 | // minilib reads as: |
7000b522 |
497 | // 0000 P000 VuVd00 0000 YXBA RLSeSt 0Ri0D 0Le0U |
498 | // | GPIOD |GPIOC[8:15]|GPIOM[0:7] | |
6720e4e4 |
499 | // /dev/GPIO: |
500 | // ... 0PVdVu ... |
501 | case 0x1184: // GPIOC |
502 | d = ~mmsp2.btn_state & 0xff00; |
503 | d |= 0x00ff; |
504 | break; |
505 | case 0x1186: // GPIOD |
506 | t = ~mmsp2.btn_state; |
507 | d = (t >> 9) & 0x0080; |
508 | d |= (t >> 11) & 0x0040; |
509 | d |= (t >> 7) & 0x0800; |
510 | d |= 0x373b; |
511 | break; |
512 | case 0x1198: // GPIOM |
513 | mmsp2.btn_state = host_read_btns(); |
514 | d = ~mmsp2.btn_state & 0xff; |
515 | d |= 0x01aa; |
516 | break; |
c1ffd5ba |
517 | case 0x1836: // reserved |
518 | d = 0x2330; |
519 | break; |
520 | case 0x2816: // DPC_X_MAX |
521 | d = 319; |
522 | break; |
523 | case 0x2818: // DPC_Y_MAX |
524 | d = 239; |
525 | break; |
6720e4e4 |
526 | case 0x28da: |
527 | d = mmsp2.mlc_stl_cntl; |
528 | break; |
c1ffd5ba |
529 | case 0x290e: |
530 | case 0x2912: |
531 | d = mmsp2.mlc_stl_adrl; |
532 | break; |
533 | case 0x2910: |
534 | case 0x2914: |
535 | d = mmsp2.mlc_stl_adrh; |
536 | break; |
6720e4e4 |
537 | case 0x2958: |
538 | d = mmsp2.mlc_stl_pallt_a; |
539 | break; |
7000b522 |
540 | |
6720e4e4 |
541 | default: |
7000b522 |
542 | d = xread32_io_cmn(a_, &t); |
543 | if (!t) |
544 | goto unk; |
545 | if (!(a_ & 2)) |
546 | d >>= 16; |
547 | break; |
6720e4e4 |
548 | } |
549 | goto out; |
550 | } |
551 | |
7000b522 |
552 | unk: |
6720e4e4 |
553 | if (a == old_a) { |
554 | d = fudge; |
555 | fudge = ~fudge; |
556 | } |
557 | old_a = a; |
558 | iolog_unh("r16", a, d & 0xffff, 16); |
559 | |
560 | out: |
561 | d &= 0xffff; |
562 | iolog("r16", a, d, 16); |
563 | return d; |
11913091 |
564 | } |
565 | |
566 | static u32 xread32(u32 a) |
567 | { |
3d295a9f |
568 | u32 d = 0; |
dc90c02d |
569 | if ((a & 0xfff00000) == 0x7f000000) { |
570 | u32 a_ = a & 0xffff; |
3d3fa63b |
571 | struct timespec ts; |
572 | u64 t64; |
7000b522 |
573 | u32 t; |
3d3fa63b |
574 | |
dc90c02d |
575 | switch (a_) { |
576 | case 0x0a00: // TCOUNT, 1/7372800s |
3d3fa63b |
577 | clock_gettime(CLOCK_REALTIME, &ts); |
578 | t64 = (u64)ts.tv_sec * 1000000000 + ts.tv_nsec; |
579 | // t * 7372800.0 / 1000000000 * 0x100000000 ~= t * 31665935 |
580 | t64 *= 31665935; |
581 | d = t64 >> 32; |
dc90c02d |
582 | break; |
7000b522 |
583 | |
584 | default: |
585 | d = xread32_io_cmn(a_, &t); |
586 | if (!t) |
587 | goto unh; |
588 | break; |
dc90c02d |
589 | } |
7000b522 |
590 | goto out; |
dc90c02d |
591 | } |
3d295a9f |
592 | if ((a & 0xfff00000) == 0x7f100000) { |
593 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
594 | u32 a_ = a & 0xfff; |
595 | if (a_ < 0x40) { |
596 | d = bl[a_ / 4]; |
597 | if (a_ == 0x34) |
598 | d = 0; // not busy |
599 | goto out; |
600 | } |
3d295a9f |
601 | } |
7000b522 |
602 | |
603 | unh: |
6720e4e4 |
604 | iolog_unh("r32", a, d, 32); |
605 | |
606 | out: |
607 | iolog("r32", a, d, 32); |
3d295a9f |
608 | return d; |
11913091 |
609 | } |
610 | |
611 | static void xwrite8(u32 a, u32 d) |
612 | { |
6720e4e4 |
613 | iolog("w8 ", a, d, 8); |
614 | iolog_unh("w8 ", a, d, 8); |
11913091 |
615 | } |
616 | |
617 | static void xwrite16(u32 a, u32 d) |
618 | { |
6720e4e4 |
619 | iolog("w16", a, d, 16); |
3d295a9f |
620 | if ((a & 0xfff00000) == 0x7f000000) { |
6720e4e4 |
621 | u32 a_ = a & 0xffff; |
622 | switch (a_) { |
7000b522 |
623 | case 0x28da: { |
624 | int mode; |
625 | mmsp2.mlc_stl_cntl = d | 0xaa; |
626 | mode = (d >> 9) & 3; |
627 | mmsp2.v.bpp = mode ? mode * 8 : 4; |
628 | break; |
629 | } |
630 | case 0x290c: |
631 | mmsp2.v.stride = d; |
632 | return; |
633 | case 0x290e: |
634 | case 0x2910: |
635 | // odd addresses don't affect LCD. What about TV? |
636 | return; |
637 | case 0x2912: |
638 | mmsp2.mlc_stl_adrl = d; |
639 | return; |
640 | case 0x2914: |
641 | mmsp2.mlc_stl_adrh = d; |
642 | if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) |
643 | // ask for refresh |
644 | pthread_cond_signal(&fb_cond); |
645 | mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr; |
646 | return; |
647 | case 0x2958: |
648 | mmsp2.mlc_stl_pallt_a = d & 0x1ff; |
649 | return; |
650 | case 0x295a: |
651 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d; |
652 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
653 | mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; |
654 | return; |
3d295a9f |
655 | } |
3d295a9f |
656 | } |
6720e4e4 |
657 | iolog_unh("w16", a, d, 16); |
11913091 |
658 | } |
659 | |
660 | static void xwrite32(u32 a, u32 d) |
661 | { |
6720e4e4 |
662 | iolog("w32", a, d, 32); |
663 | |
7000b522 |
664 | if ((a & 0xfff00000) == 0x7f000000) { |
665 | u32 a_ = a & 0xffff; |
666 | switch (a_) { |
667 | // Wiz |
668 | case 0x4024: // MLCCONTROL0 |
669 | case 0x4058: // MLCCONTROL1 |
670 | pollux.mlccontrol = d; |
671 | if (!(d & 0x20)) |
672 | return; // layer not enabled |
673 | if ((d >> 16) == 0x443A) |
674 | pollux.v.bpp = 8; |
675 | else |
676 | pollux.v.bpp = 16; |
677 | return; |
678 | case 0x402c: // MLCVSTRIDE0 |
679 | case 0x4060: // MLCVSTRIDE1 |
680 | pollux.v.stride = d; |
681 | return; |
682 | case 0x4038: // MLCADDRESS0 |
683 | case 0x406c: // MLCADDRESS1 |
684 | pollux.mlc_stl_adr = d; |
685 | if (d != mmsp2.old_mlc_stl_adr) |
686 | // ask for refresh |
687 | pthread_cond_signal(&fb_cond); |
688 | mmsp2.old_mlc_stl_adr = d; |
689 | return; |
690 | case 0x403c: // MLCPALETTE0 |
691 | case 0x4070: // MLCPALETTE1 |
692 | pollux.mlcpalette[d >> 24] = d; |
693 | pollux.v.dirty_pal = DIRTY_PAL_POLLUX; |
694 | return; |
695 | } |
696 | } |
3d295a9f |
697 | if ((a & 0xfff00000) == 0x7f100000) { |
698 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
699 | u32 a_ = a & 0xfff; |
700 | if (a_ < 0x40) { |
701 | bl[a_ / 4] = d; |
702 | if (a_ == 0x34 && (d & 1)) |
703 | blitter_do(); |
704 | return; |
705 | } |
3d295a9f |
706 | } |
6720e4e4 |
707 | iolog_unh("w32", a, d, 32); |
11913091 |
708 | } |
709 | |
6720e4e4 |
710 | #define LINKPAGE_SIZE 0x1000 |
711 | #define LINKPAGE_COUNT 4 |
712 | #define LINKPAGE_ALLOC (LINKPAGE_SIZE * LINKPAGE_COUNT) |
713 | |
714 | struct op_context { |
715 | u32 pc; |
716 | u32 op; |
717 | u32 code[0]; |
718 | }; |
719 | |
3d3fa63b |
720 | struct op_linkpage { |
6720e4e4 |
721 | void (*handler)(struct op_context *op_ctx); |
722 | u32 code[0]; |
723 | }; |
724 | |
3d3fa63b |
725 | struct op_stackframe { |
726 | u32 saved_regs[15]; |
727 | u32 cpsr; |
728 | }; |
729 | |
730 | static struct op_linkpage *g_linkpage; |
6720e4e4 |
731 | static u32 *g_code_ptr; |
732 | static int g_linkpage_count; |
733 | |
11913091 |
734 | #define BIT_SET(v, b) (v & (1 << (b))) |
735 | |
3d3fa63b |
736 | void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe) |
11913091 |
737 | { |
3d3fa63b |
738 | u32 *regs = sframe->saved_regs; |
6720e4e4 |
739 | u32 op = op_ctx->op; |
11913091 |
740 | u32 t, shift, ret, addr; |
fea1465c |
741 | int rn, rd, cond; |
11913091 |
742 | |
fea1465c |
743 | cond = (op & 0xf0000000) >> 28; |
11913091 |
744 | rd = (op & 0x0000f000) >> 12; |
745 | rn = (op & 0x000f0000) >> 16; |
746 | |
fea1465c |
747 | if (cond != 0x0e) |
748 | goto unhandled; // TODO |
749 | |
11913091 |
750 | if ((op & 0x0f200090) == 0x01000090) { // AM3: LDRH, STRH |
86418a84 |
751 | if (!BIT_SET(op, 5)) // !H |
752 | goto unhandled; |
753 | if (BIT_SET(op, 6) && !BIT_SET(op, 20)) // S && !L |
11913091 |
754 | goto unhandled; |
755 | |
756 | if (BIT_SET(op, 22)) // imm offset |
757 | t = ((op & 0xf00) >> 4) | (op & 0x0f); |
758 | else // reg offset |
759 | t = regs[op & 0x000f]; |
760 | |
761 | if (!BIT_SET(op, 23)) |
762 | t = -t; |
763 | addr = regs[rn] + t; |
764 | |
765 | if (BIT_SET(op, 20)) { // Load |
766 | ret = xread16(addr); |
86418a84 |
767 | if (BIT_SET(op, 6)) { // S |
768 | ret <<= 16; |
769 | ret = (signed int)ret >> 16; |
770 | } |
11913091 |
771 | regs[rd] = ret; |
772 | } |
773 | else |
774 | xwrite16(addr, regs[rd]); |
775 | } |
fea1465c |
776 | else if ((op & 0x0c000000) == 0x04000000) { // load/store word/byte |
777 | if (BIT_SET(op, 21)) |
778 | goto unhandled; // unprivileged |
11913091 |
779 | if (BIT_SET(op, 25)) { // reg offs |
780 | if (BIT_SET(op, 4)) |
fea1465c |
781 | goto unhandled; // nah it's media |
11913091 |
782 | |
783 | t = regs[op & 0x000f]; |
784 | shift = (op & 0x0f80) >> 7; |
785 | switch ((op & 0x0060) >> 5) { |
786 | case 0: t = t << shift; break; |
787 | case 1: t = t >> (shift + 1); break; |
788 | case 2: t = (signed int)t >> (shift + 1); break; |
789 | case 3: goto unhandled; // I'm just lazy |
790 | } |
791 | } |
792 | else // imm offs |
793 | t = op & 0x0fff; |
794 | |
795 | if (!BIT_SET(op, 23)) |
796 | t = -t; |
fea1465c |
797 | |
798 | addr = regs[rn]; |
799 | if (BIT_SET(op, 24)) // pre-indexed |
800 | addr += t; |
801 | if (!BIT_SET(op, 24) || BIT_SET(op, 21)) |
802 | regs[rn] += t; // writeback |
11913091 |
803 | |
804 | if (BIT_SET(op, 20)) { // Load |
805 | if (BIT_SET(op, 22)) // Byte |
806 | ret = xread8(addr); |
807 | else |
808 | ret = xread32(addr); |
809 | regs[rd] = ret; |
810 | } |
811 | else { |
812 | if (BIT_SET(op, 22)) // Byte |
813 | xwrite8(addr, regs[rd]); |
814 | else |
815 | xwrite32(addr, regs[rd]); |
816 | } |
817 | } |
818 | else |
819 | goto unhandled; |
820 | |
86418a84 |
821 | #if 0 |
11913091 |
822 | if (addr != addr_check) { |
823 | fprintf(stderr, "bad calculated addr: %08x vs %08x\n", addr, addr_check); |
824 | abort(); |
825 | } |
86418a84 |
826 | #endif |
11913091 |
827 | return; |
828 | |
829 | unhandled: |
6720e4e4 |
830 | err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc); |
fea1465c |
831 | abort(); |
86418a84 |
832 | } |
833 | |
834 | static u32 make_offset12(u32 *pc, u32 *target) |
835 | { |
836 | int lp_offs, u = 1; |
837 | |
838 | lp_offs = (char *)target - (char *)pc - 2*4; |
839 | if (lp_offs < 0) { |
840 | lp_offs = -lp_offs; |
841 | u = 0; |
842 | } |
843 | if (lp_offs >= LINKPAGE_SIZE) { |
6720e4e4 |
844 | err("linkpage too far: %d\n", lp_offs); |
86418a84 |
845 | abort(); |
846 | } |
847 | |
848 | return (u << 23) | lp_offs; |
849 | } |
850 | |
6720e4e4 |
851 | static u32 make_jmp(u32 *pc, u32 *target, int bl) |
86418a84 |
852 | { |
853 | int jmp_val; |
854 | |
855 | jmp_val = target - pc - 2; |
856 | if (jmp_val < (int)0xff000000 || jmp_val > 0x00ffffff) { |
6720e4e4 |
857 | err("jump out of range (%p -> %p)\n", pc, target); |
86418a84 |
858 | abort(); |
859 | } |
860 | |
6720e4e4 |
861 | return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff); |
86418a84 |
862 | } |
863 | |
864 | static void emit_op(u32 op) |
865 | { |
866 | *g_code_ptr++ = op; |
867 | } |
868 | |
869 | static void emit_op_io(u32 op, u32 *target) |
870 | { |
871 | op |= make_offset12(g_code_ptr, target); |
872 | emit_op(op); |
873 | } |
874 | |
6720e4e4 |
875 | static void init_linkpage(void) |
876 | { |
3d3fa63b |
877 | g_linkpage->handler = emu_call_handle_op; |
6720e4e4 |
878 | g_code_ptr = g_linkpage->code; |
6720e4e4 |
879 | } |
880 | |
86418a84 |
881 | static void segv_sigaction(int num, siginfo_t *info, void *ctx) |
882 | { |
883 | struct ucontext *context = ctx; |
884 | u32 *regs = (u32 *)&context->uc_mcontext.arm_r0; |
885 | u32 *pc = (u32 *)regs[15]; |
6720e4e4 |
886 | struct op_context *op_ctx; |
7fd42181 |
887 | int i, lp_size; |
86418a84 |
888 | |
6720e4e4 |
889 | if (((regs[15] ^ (u32)&segv_sigaction) & 0xff000000) == 0 || // PC is in our segment or |
890 | (((regs[15] ^ (u32)g_linkpage) & ~(LINKPAGE_ALLOC - 1)) == 0) || // .. in linkpage |
891 | ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected |
86418a84 |
892 | { |
893 | // real crash - time to die |
6720e4e4 |
894 | err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
7fd42181 |
895 | for (i = 0; i < 8; i++) |
4d045184 |
896 | dbg(" r%d=%08x r%2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
86418a84 |
897 | signal(num, SIG_DFL); |
898 | raise(num); |
c1ffd5ba |
899 | return; |
86418a84 |
900 | } |
0881206b |
901 | segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
86418a84 |
902 | |
903 | // spit PC and op |
6720e4e4 |
904 | op_ctx = (void *)g_code_ptr; |
905 | op_ctx->pc = (u32)pc; |
906 | op_ctx->op = *pc; |
907 | g_code_ptr = &op_ctx->code[0]; |
86418a84 |
908 | |
909 | // emit jump to code ptr |
6720e4e4 |
910 | *pc = make_jmp(pc, g_code_ptr, 0); |
86418a84 |
911 | |
912 | // generate code: |
3d3fa63b |
913 | emit_op (0xe50d0000 + 0xf00 - 4 * 0); // str r0, [sp, #(-0xf00 + r0_offs)] |
914 | emit_op (0xe50de000 + 0xf00 - 4 * 14); // str lr, [sp, #(-0xf00 + lr_offs)] |
6720e4e4 |
915 | emit_op (0xe24f0000 + (g_code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx |
3d3fa63b |
916 | emit_op (0xe1a0e00f); // mov lr, pc |
917 | emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op |
918 | emit_op (0xe51de000 + 0xf00 - 4 * 14); // ldr lr, [sp, #(-0xf00 + lr_offs)] |
6720e4e4 |
919 | emit_op (make_jmp(g_code_ptr, pc + 1, 0)); // jmp <back> |
86418a84 |
920 | |
921 | // sync caches |
922 | sys_cacheflush(pc, pc + 1); |
923 | sys_cacheflush(g_linkpage, g_code_ptr); |
924 | |
925 | lp_size = (char *)g_code_ptr - (char *)g_linkpage; |
0881206b |
926 | segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); |
86418a84 |
927 | |
928 | if (lp_size + 13*4 > LINKPAGE_SIZE) { |
929 | g_linkpage_count++; |
930 | if (g_linkpage_count >= LINKPAGE_COUNT) { |
6720e4e4 |
931 | err("too many linkpages needed\n"); |
86418a84 |
932 | abort(); |
933 | } |
934 | g_linkpage = (void *)((char *)g_linkpage + LINKPAGE_SIZE); |
935 | init_linkpage(); |
936 | } |
937 | //handle_op(regs[15], op, regs, (u32)info->si_addr); |
938 | //regs[15] += 4; |
939 | } |
11913091 |
940 | |
941 | void emu_init(void *map_bottom) |
942 | { |
7fd42181 |
943 | sigaction_t segv_action = { |
11913091 |
944 | .sa_sigaction = segv_sigaction, |
945 | .sa_flags = SA_SIGINFO, |
946 | }; |
c1ffd5ba |
947 | pthread_t tid; |
6720e4e4 |
948 | void *pret; |
949 | int ret; |
11913091 |
950 | |
830ba1bf |
951 | #ifdef PND |
952 | if (geteuid() == 0) { |
953 | fprintf(stderr, "don't try to run as root, device registers or memory " |
954 | "might get trashed crashing the OS or even damaging the device.\n"); |
955 | exit(1); |
956 | } |
957 | #endif |
958 | |
86418a84 |
959 | g_linkpage = (void *)(((u32)map_bottom - LINKPAGE_ALLOC) & ~0xfff); |
7fd42181 |
960 | pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, |
4d045184 |
961 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); |
6720e4e4 |
962 | if (pret != g_linkpage) { |
963 | perror(PFX "mmap linkpage"); |
11913091 |
964 | exit(1); |
965 | } |
c1ffd5ba |
966 | log("linkpages @ %p\n", g_linkpage); |
86418a84 |
967 | init_linkpage(); |
11913091 |
968 | |
4d045184 |
969 | // host stuff |
970 | ret = host_init(); |
971 | if (ret != 0) { |
972 | err("can't init host\n"); |
3d3fa63b |
973 | exit(1); |
974 | } |
975 | |
4d045184 |
976 | ret = host_video_init(NULL, 0); |
2ce69bdf |
977 | if (ret != 0) { |
4d045184 |
978 | err("can't init host video\n"); |
979 | exit(1); |
980 | } |
981 | |
5853ddbd |
982 | // TODO: check if this really fails on Wiz.. |
4d045184 |
983 | mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC, |
984 | MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
5853ddbd |
985 | #ifdef WIZ |
986 | if (mmsp2.umem == MAP_FAILED) { |
987 | // we are short on memmory on Wiz, need special handling |
988 | extern void *host_mmap_upper(void); |
989 | mmsp2.umem = host_mmap_upper(); |
990 | } |
4d045184 |
991 | #endif |
992 | if (mmsp2.umem == MAP_FAILED) { |
993 | perror(PFX "mmap upper mem"); |
3d295a9f |
994 | exit(1); |
995 | } |
c1ffd5ba |
996 | |
997 | ret = pthread_create(&tid, NULL, fb_sync_thread, NULL); |
998 | if (ret != 0) { |
999 | err("failed to create fb_sync_thread: %d\n", ret); |
1000 | exit(1); |
1001 | } |
1002 | pthread_detach(tid); |
1003 | |
7000b522 |
1004 | // defaults |
c1ffd5ba |
1005 | mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000 |
7fd42181 |
1006 | mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active |
7000b522 |
1007 | mmsp2.v.width = 320; |
1008 | mmsp2.v.height = 240; |
1009 | mmsp2.v.stride = 320*2; |
1010 | mmsp2.v.bpp = 16; |
1011 | mmsp2.v.dirty_pal = 1; |
c1ffd5ba |
1012 | |
1013 | sigemptyset(&segv_action.sa_mask); |
1014 | sigaction(SIGSEGV, &segv_action, NULL); |
3d295a9f |
1015 | } |
1016 | |
1017 | int emu_read_gpiodev(void *buf, int count) |
1018 | { |
4d045184 |
1019 | if (count <= 0) { |
6720e4e4 |
1020 | err("gpiodev read %d?\n", count); |
3d295a9f |
1021 | return -1; |
1022 | } |
4d045184 |
1023 | if (count > 4) |
1024 | count = 4; |
3d295a9f |
1025 | |
4d045184 |
1026 | mmsp2.btn_state = host_read_btns(); |
1027 | memcpy(buf, &mmsp2.btn_state, count); |
1028 | return count; |
11913091 |
1029 | } |
1030 | |
dc90c02d |
1031 | static void *emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) |
11913091 |
1032 | { |
3d3fa63b |
1033 | u8 *umem, *umem_end; |
11913091 |
1034 | |
3d295a9f |
1035 | // SoC regs |
7000b522 |
1036 | if ((offset & ~0x1ffff) == 0xc0000000) { |
11913091 |
1037 | return mmap((void *)0x7f000000, length, PROT_NONE, |
1038 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1039 | } |
7000b522 |
1040 | // MMSP2 blitter |
11913091 |
1041 | if ((offset & ~0xffff) == 0xe0020000) { |
1042 | return mmap((void *)0x7f100000, length, PROT_NONE, |
1043 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1044 | } |
3d295a9f |
1045 | // upper mem |
3d3fa63b |
1046 | if ((offset & 0xfe000000) != 0x02000000) { |
6720e4e4 |
1047 | err("unexpected devmem mmap @ %08x\n", offset); |
dc90c02d |
1048 | errno = EINVAL; |
3d295a9f |
1049 | return MAP_FAILED; |
1050 | } |
1051 | |
3d3fa63b |
1052 | umem = uppermem_lookup(offset, &umem_end); |
1053 | if (umem + length > umem_end) |
1054 | err("warning: uppermem @ %08x overflows by %d bytes\n", |
1055 | offset, umem + length - umem_end); |
1056 | |
1057 | dbg("upper mem @ %08x %d\n", offset, length); |
1058 | return umem; |
11913091 |
1059 | } |
1060 | |
dc90c02d |
1061 | void *emu_do_mmap(unsigned int length, int prot, int flags, int fd, unsigned int offset) |
1062 | { |
1063 | if (fd == FAKEDEV_MEM) |
1064 | return emu_mmap_dev(length, prot, flags, offset); |
1065 | |
1066 | if (fd == FAKEDEV_FB0) |
1067 | return emu_mmap_dev(length, prot, flags, offset + 0x03101000); |
1068 | |
1069 | if (fd == FAKEDEV_FB1) |
1070 | return emu_mmap_dev(length, prot, flags, offset + 0x03381000); |
1071 | |
7fd42181 |
1072 | err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset); |
dc90c02d |
1073 | errno = EINVAL; |
1074 | return MAP_FAILED; |
1075 | } |
1076 | |
7000b522 |
1077 | static void emu_sound_open(int fd) |
1078 | { |
1079 | #ifdef PND |
1080 | int ret, frag; |
1081 | |
1082 | // set default buffer size to 16 * 1K |
1083 | frag = (16<<16) | 10; // 16K |
1084 | ret = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
1085 | if (ret != 0) { |
1086 | err("snd ioctl SETFRAGMENT %08x: ", frag); |
1087 | perror(NULL); |
1088 | } |
1089 | #endif |
1090 | } |
1091 | |
dc90c02d |
1092 | static int emu_sound_ioctl(int fd, int request, void *argp) |
1093 | { |
1094 | int *arg = argp; |
1095 | |
1096 | #if 0 |
1097 | dbg("snd ioctl(%d, %08x, %p)", fd, request, argp); |
1098 | if (arg != NULL) |
1099 | dbg_c(" [%d]", *arg); |
1100 | dbg_c("\n"); |
1101 | #endif |
1102 | |
1103 | /* People set strange frag settings on GP2X, which even manage |
1104 | * to break audio on pandora (causes writes to fail). |
1105 | * Catch this and set to something that works. */ |
7000b522 |
1106 | switch(request) { |
1107 | case SNDCTL_DSP_SETFRAGMENT: { |
1108 | int ret, bsize, frag, frag_cnt; |
1109 | if (arg == NULL) |
1110 | break; |
dc90c02d |
1111 | |
7000b522 |
1112 | frag = *arg & 0xffff; |
1113 | frag_cnt = *arg >> 16; |
1114 | bsize = frag_cnt << frag; |
1115 | if (frag < 10 || bsize < 4096*4 || bsize > 4096*4*2) { |
1116 | /* |
1117 | * ~4ms. gpSP wants small buffers or else it stutters |
1118 | * because of it's audio thread sync stuff |
1119 | * XXX: hardcoding, as low samplerates will result in small fragment size, |
1120 | * which itself causes ALSA stall and hangs the program. |
1121 | * Also some apps change samplerate without reopening /dev/dsp, |
1122 | * which causes ALSA to reject SNDCTL_DSP_SETFRAGMENT. |
1123 | */ |
1124 | bsize = 44100 / 250 * 4; |
1125 | |
1126 | for (frag = 0; bsize; bsize >>= 1, frag++) |
1127 | ; |
1128 | |
1129 | frag_cnt = 16; |
1130 | } |
dc90c02d |
1131 | |
7000b522 |
1132 | frag |= frag_cnt << 16; |
1133 | ret = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
1134 | if (ret != 0) { |
1135 | err("snd ioctl SETFRAGMENT %08x: ", frag); |
1136 | perror(NULL); |
1137 | } |
1138 | // indicate success even if we fail (because of ALSA mostly), |
1139 | // things like MikMod will bail out otherwise. |
1140 | return 0; |
dc90c02d |
1141 | } |
7000b522 |
1142 | case SNDCTL_DSP_SYNC: |
1143 | // Franxis tends to use sync/write loops, bad idea under ALSA |
1144 | return 0; |
1145 | default: |
1146 | break; |
dc90c02d |
1147 | } |
dc90c02d |
1148 | |
1149 | return ioctl(fd, request, argp); |
1150 | } |
1151 | |
dc90c02d |
1152 | int emu_do_ioctl(int fd, int request, void *argp) |
1153 | { |
1154 | if (fd == emu_interesting_fds[IFD_SOUND].fd) |
1155 | return emu_sound_ioctl(fd, request, argp); |
1156 | |
7fd42181 |
1157 | switch (fd) { |
1158 | /* *********************** */ |
1159 | case FAKEDEV_FB0: |
1160 | case FAKEDEV_FB1: |
1161 | if (argp == NULL) |
1162 | goto fail; |
dc90c02d |
1163 | |
dc90c02d |
1164 | switch (request) { |
1165 | case FBIOGET_FSCREENINFO: { |
1166 | struct fb_fix_screeninfo *fix = argp; |
1167 | |
1168 | memset(fix, 0, sizeof(*fix)); |
1169 | strcpy(fix->id, "mmsp2_RGB0"); |
1170 | fix->type = FB_TYPE_PACKED_PIXELS; |
1171 | fix->accel = FB_ACCEL_NONE; |
7fd42181 |
1172 | fix->visual = FB_VISUAL_TRUECOLOR; |
1173 | fix->line_length = 320*2; |
dc90c02d |
1174 | fix->smem_start = (fd == FAKEDEV_FB0) ? 0x03101000 : 0x03381000; |
1175 | fix->smem_len = 320*240*2; |
1176 | return 0; |
1177 | } |
1178 | case FBIOGET_VSCREENINFO: { |
1179 | struct fb_var_screeninfo *var = argp; |
7fd42181 |
1180 | static const struct fb_bitfield fbb_red = { offset: 11, length: 5, }; |
1181 | static const struct fb_bitfield fbb_green = { offset: 5, length: 6, }; |
1182 | static const struct fb_bitfield fbb_blue = { offset: 0, length: 5, }; |
dc90c02d |
1183 | |
1184 | memset(var, 0, sizeof(*var)); |
1185 | var->activate = FB_ACTIVATE_NOW; |
1186 | var->xres = |
1187 | var->xres_virtual = 320; |
1188 | var->yres = |
1189 | var->yres_virtual = 240; |
1190 | var->width = |
1191 | var->height = -1; |
1192 | var->vmode = FB_VMODE_NONINTERLACED; |
1193 | var->bits_per_pixel = 16; |
1194 | var->red = fbb_red; |
1195 | var->green = fbb_green; |
1196 | var->blue = fbb_blue; |
1197 | return 0; |
1198 | } |
7fd42181 |
1199 | case FBIOPUT_VSCREENINFO: { |
1200 | struct fb_var_screeninfo *var = argp; |
1201 | dbg(" put vscreen: %dx%d@%d\n", var->xres, var->yres, var->bits_per_pixel); |
1202 | if (var->xres != 320 || var->yres != 240 || var->bits_per_pixel != 16) |
1203 | return -1; |
1204 | return 0; |
1205 | } |
dc90c02d |
1206 | } |
7fd42181 |
1207 | |
1208 | /* *********************** */ |
1209 | case FAKEDEV_TTY0: |
1210 | // fake tty0 to make GPH SDL happy |
1211 | if (request == 0x4b46) // KDGKBENT |
1212 | return -1; |
1213 | return 0; |
dc90c02d |
1214 | } |
1215 | |
1216 | fail: |
7fd42181 |
1217 | err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp); |
dc90c02d |
1218 | errno = EINVAL; |
1219 | return -1; |
1220 | } |
1221 | |
7000b522 |
1222 | struct dev_fd_t emu_interesting_fds[] = { |
1223 | [IFD_SOUND] = { "/dev/dsp", -1, emu_sound_open }, |
1224 | { NULL, 0, NULL }, |
1225 | }; |
1226 | |
7fd42181 |
1227 | static const struct { |
1228 | const char *from; |
1229 | const char *to; |
1230 | } path_map[] = { |
158ddd8d |
1231 | { "/mnt/tmp", "./tmp" }, |
7fd42181 |
1232 | }; |
1233 | |
7fd42181 |
1234 | static const char *wrap_path(const char *path) |
1235 | { |
158ddd8d |
1236 | char *buff, *p; |
3d3fa63b |
1237 | size_t size; |
7fd42181 |
1238 | int i, len; |
1239 | |
1240 | // do only path mapping for now |
1241 | for (i = 0; i < ARRAY_SIZE(path_map); i++) { |
158ddd8d |
1242 | p = strstr(path, path_map[i].from); |
1243 | if (p != NULL) { |
3d3fa63b |
1244 | size = strlen(path) + strlen(path_map[i].to) + 1; |
1245 | buff = malloc(size); |
1246 | if (buff == NULL) |
1247 | break; |
158ddd8d |
1248 | len = p - path; |
1249 | strncpy(buff, path, len); |
1250 | snprintf(buff + len, size - len, "%s%s", path_map[i].to, |
1251 | path + len + strlen(path_map[i].from)); |
3d3fa63b |
1252 | dbg("mapped path \"%s\" -> \"%s\"\n", path, buff); |
1253 | return buff; |
7fd42181 |
1254 | } |
1255 | } |
1256 | |
1257 | return path; |
1258 | } |
1259 | |
7000b522 |
1260 | static void wrap_path_free(const char *w_path, const char *old_path) |
1261 | { |
1262 | if (w_path != old_path) |
1263 | free((void *)w_path); |
1264 | } |
1265 | |
7fd42181 |
1266 | void *emu_do_fopen(const char *path, const char *mode) |
1267 | { |
7000b522 |
1268 | const char *w_path; |
3d3fa63b |
1269 | FILE *ret; |
7000b522 |
1270 | |
1271 | w_path = wrap_path(path); |
3d3fa63b |
1272 | ret = fopen(w_path, mode); |
7000b522 |
1273 | wrap_path_free(w_path, path); |
1274 | |
3d3fa63b |
1275 | return ret; |
7fd42181 |
1276 | } |
1277 | |
3d3fa63b |
1278 | // FIXME: threads.. |
7fd42181 |
1279 | int emu_do_system(const char *command) |
1280 | { |
1281 | static char tmp_path[512]; |
158ddd8d |
1282 | int need_ginge = 0; |
3d3fa63b |
1283 | const char *p2; |
1284 | char *p; |
db9191ed |
1285 | int ret; |
7fd42181 |
1286 | |
1287 | if (command == NULL) |
1288 | return -1; |
1289 | |
158ddd8d |
1290 | for (p2 = command; *p2 && isspace(*p2); p2++) |
1291 | ; |
7fd42181 |
1292 | |
158ddd8d |
1293 | if (*p2 == '.') // relative path? |
1294 | need_ginge = 1; |
1295 | else if (*p2 == '/' && strncmp(p2, "/bin", 4) && strncmp(p2, "/lib", 4) |
1296 | && strncmp(p2, "/sbin", 4) && strncmp(p2, "/usr", 4)) |
1297 | // absolute path, but not a system command |
1298 | need_ginge = 1; |
7fd42181 |
1299 | |
3d3fa63b |
1300 | p2 = wrap_path(command); |
158ddd8d |
1301 | if (need_ginge) { |
1302 | make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep"); |
1303 | p = tmp_path + strlen(tmp_path); |
1304 | |
1305 | snprintf(p, sizeof(tmp_path) - (p - tmp_path), " --nomenu %s", p2); |
1306 | } |
1307 | else |
1308 | snprintf(tmp_path, sizeof(tmp_path), "%s", p2); |
7000b522 |
1309 | wrap_path_free(p2, command); |
3d3fa63b |
1310 | |
7fd42181 |
1311 | dbg("system: \"%s\"\n", tmp_path); |
db9191ed |
1312 | |
1313 | // the app might want the screen too.. |
1314 | fb_thread_pause(); |
1315 | ret = system(tmp_path); |
1316 | fb_thread_resume(); |
1317 | return ret; |
7fd42181 |
1318 | } |
1319 | |
7000b522 |
1320 | int emu_do_execve(const char *filename, char *const argv[], char *const envp[]) |
1321 | { |
1322 | const char **new_argv; |
1323 | char *prep_path; |
1324 | int i, ret, argc; |
1325 | |
1326 | if (filename == NULL) |
1327 | return -1; |
1328 | |
1329 | if (strstr(filename, "/gp2xmenu") != NULL) |
1330 | exit(0); |
1331 | |
1332 | for (i = 0; argv[i] != NULL; i++) |
1333 | ; |
1334 | argc = i + 1; |
1335 | |
1336 | new_argv = calloc(argc + 2, sizeof(new_argv[0])); |
1337 | if (new_argv == NULL) |
1338 | return -1; |
1339 | |
1340 | prep_path = malloc(512); |
1341 | if (prep_path == NULL) |
1342 | return -1; |
1343 | |
1344 | make_local_path(prep_path, 512, "ginge_prep"); |
1345 | new_argv[0] = prep_path; |
1346 | new_argv[1] = "--nomenu"; |
1347 | new_argv[2] = wrap_path(filename); |
1348 | |
1349 | if (argv[0] != NULL) |
1350 | for (i = 1; argv[i] != NULL; i++) |
1351 | new_argv[i + 2] = argv[i]; |
1352 | |
1353 | dbg("execve \"%s\" %s \"%s\"\n", new_argv[0], new_argv[1], new_argv[2]); |
1354 | ret = execve(new_argv[0], (char **)new_argv, envp); |
1355 | perror("execve"); |
1356 | return ret; |
1357 | } |
1358 | |
499bf01c |
1359 | // vim:shiftwidth=2:expandtab |