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ef79bbde P |
1 | /*************************************************************************** |
2 | * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team * | |
3 | * * | |
4 | * This program is free software; you can redistribute it and/or modify * | |
5 | * it under the terms of the GNU General Public License as published by * | |
6 | * the Free Software Foundation; either version 2 of the License, or * | |
7 | * (at your option) any later version. * | |
8 | * * | |
9 | * This program is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU General Public License * | |
15 | * along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * | |
18 | ***************************************************************************/ | |
19 | ||
20 | /* | |
21 | * PSX memory functions. | |
22 | */ | |
23 | ||
24 | // TODO: Implement caches & cycle penalty. | |
25 | ||
270c6dd1 | 26 | #include <compat/fopen_utf8.h> |
27 | ||
ef79bbde | 28 | #include "psxmem.h" |
87e5b45f | 29 | #include "psxmem_map.h" |
ef79bbde P |
30 | #include "r3000a.h" |
31 | #include "psxhw.h" | |
fc8145b7 | 32 | #include "debug.h" |
ce0e7ac9 | 33 | |
34 | #include "memmap.h" | |
ef79bbde P |
35 | |
36 | #ifndef MAP_ANONYMOUS | |
37 | #define MAP_ANONYMOUS MAP_ANON | |
38 | #endif | |
39 | ||
87e5b45f | 40 | void *(*psxMapHook)(unsigned long addr, size_t size, int is_fixed, |
41 | enum psxMapTag tag); | |
42 | void (*psxUnmapHook)(void *ptr, size_t size, enum psxMapTag tag); | |
43 | ||
44 | void *psxMap(unsigned long addr, size_t size, int is_fixed, | |
45 | enum psxMapTag tag) | |
46 | { | |
a62012a7 | 47 | #ifdef LIGHTREC |
f12a6e13 ZC |
48 | #ifdef MAP_FIXED_NOREPLACE |
49 | int flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED_NOREPLACE; | |
50 | #else | |
38c19eff | 51 | int flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED; |
f12a6e13 | 52 | #endif |
a62012a7 T |
53 | #else |
54 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
55 | #endif | |
56 | ||
5644b26c | 57 | int try_ = 0; |
b0dd9956 | 58 | unsigned long mask; |
87e5b45f | 59 | void *req, *ret; |
60 | ||
b0dd9956 | 61 | retry: |
62 | if (psxMapHook != NULL) { | |
85f23982 | 63 | ret = psxMapHook(addr, size, 0, tag); |
64 | if (ret == NULL) | |
65 | return NULL; | |
66 | } | |
67 | else { | |
68 | /* avoid MAP_FIXED, it overrides existing mappings.. */ | |
69 | /* if (is_fixed) | |
70 | flags |= MAP_FIXED; */ | |
71 | ||
72 | req = (void *)addr; | |
73 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); | |
74 | if (ret == MAP_FAILED) | |
75 | return NULL; | |
b0dd9956 | 76 | } |
87e5b45f | 77 | |
b0dd9956 | 78 | if (addr != 0 && ret != (void *)addr) { |
79 | SysMessage("psxMap: warning: wanted to map @%08x, got %p\n", | |
80 | addr, ret); | |
81 | ||
0069615f | 82 | if (is_fixed) { |
83 | psxUnmap(ret, size, tag); | |
84 | return NULL; | |
85 | } | |
86 | ||
5644b26c | 87 | if (((addr ^ (unsigned long)ret) & ~0xff000000l) && try_ < 2) |
b0dd9956 | 88 | { |
89 | psxUnmap(ret, size, tag); | |
90 | ||
91 | // try to use similarly aligned memory instead | |
92 | // (recompiler needs this) | |
5644b26c | 93 | mask = try_ ? 0xffff : 0xffffff; |
94 | addr = ((unsigned long)ret + mask) & ~mask; | |
95 | try_++; | |
b0dd9956 | 96 | goto retry; |
97 | } | |
98 | } | |
87e5b45f | 99 | |
100 | return ret; | |
101 | } | |
102 | ||
103 | void psxUnmap(void *ptr, size_t size, enum psxMapTag tag) | |
104 | { | |
105 | if (psxUnmapHook != NULL) { | |
106 | psxUnmapHook(ptr, size, tag); | |
107 | return; | |
108 | } | |
109 | ||
88901dd2 | 110 | if (ptr) |
111 | munmap(ptr, size); | |
87e5b45f | 112 | } |
113 | ||
ef79bbde P |
114 | s8 *psxM = NULL; // Kernel & User Memory (2 Meg) |
115 | s8 *psxP = NULL; // Parallel Port (64K) | |
116 | s8 *psxR = NULL; // BIOS ROM (512K) | |
117 | s8 *psxH = NULL; // Scratch Pad (1K) & Hardware Registers (8K) | |
118 | ||
119 | u8 **psxMemWLUT = NULL; | |
120 | u8 **psxMemRLUT = NULL; | |
121 | ||
122 | /* Playstation Memory Map (from Playstation doc by Joshua Walker) | |
123 | 0x0000_0000-0x0000_ffff Kernel (64K) | |
124 | 0x0001_0000-0x001f_ffff User Memory (1.9 Meg) | |
125 | ||
126 | 0x1f00_0000-0x1f00_ffff Parallel Port (64K) | |
127 | ||
128 | 0x1f80_0000-0x1f80_03ff Scratch Pad (1024 bytes) | |
129 | ||
130 | 0x1f80_1000-0x1f80_2fff Hardware Registers (8K) | |
131 | ||
132 | 0x1fc0_0000-0x1fc7_ffff BIOS (512K) | |
133 | ||
134 | 0x8000_0000-0x801f_ffff Kernel and User Memory Mirror (2 Meg) Cached | |
135 | 0x9fc0_0000-0x9fc7_ffff BIOS Mirror (512K) Cached | |
136 | ||
137 | 0xa000_0000-0xa01f_ffff Kernel and User Memory Mirror (2 Meg) Uncached | |
138 | 0xbfc0_0000-0xbfc7_ffff BIOS Mirror (512K) Uncached | |
139 | */ | |
140 | ||
141 | int psxMemInit() { | |
142 | int i; | |
143 | ||
144 | psxMemRLUT = (u8 **)malloc(0x10000 * sizeof(void *)); | |
145 | psxMemWLUT = (u8 **)malloc(0x10000 * sizeof(void *)); | |
146 | memset(psxMemRLUT, 0, 0x10000 * sizeof(void *)); | |
147 | memset(psxMemWLUT, 0, 0x10000 * sizeof(void *)); | |
148 | ||
a62012a7 | 149 | #ifdef LIGHTREC |
38c19eff | 150 | psxM = psxMap(0x30000000, 0x00210000, 1, MAP_TAG_RAM); |
f12a6e13 ZC |
151 | if (psxM == NULL) |
152 | psxM = psxMap(0x70000000, 0x00210000, 1, MAP_TAG_RAM); | |
153 | ||
a62012a7 T |
154 | #else |
155 | psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM); | |
156 | #endif | |
a327ad27 | 157 | #ifndef RAM_FIXED |
a4874585 | 158 | if (psxM == NULL) |
f23d3386 | 159 | psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM); |
a327ad27 | 160 | #endif |
87e5b45f | 161 | if (psxM == NULL) { |
a327ad27 | 162 | SysMessage(_("mapping main RAM failed")); |
163 | return -1; | |
164 | } | |
ef79bbde P |
165 | |
166 | psxP = &psxM[0x200000]; | |
a62012a7 | 167 | #ifdef LIGHTREC |
38c19eff | 168 | psxH = psxMap(0x4f800000, 0x10000, 0, MAP_TAG_OTHER); |
f12a6e13 ZC |
169 | if (psxH == NULL) |
170 | psxH = psxMap(0x8f800000, 0x10000, 0, MAP_TAG_OTHER); | |
171 | ||
38c19eff | 172 | psxR = psxMap(0x4fc00000, 0x80000, 0, MAP_TAG_OTHER); |
f12a6e13 ZC |
173 | if (psxR == NULL) |
174 | psxR = psxMap(0x8fc00000, 0x80000, 0, MAP_TAG_OTHER); | |
a62012a7 T |
175 | #else |
176 | psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER); | |
177 | psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER); | |
178 | #endif | |
ef79bbde P |
179 | |
180 | if (psxMemRLUT == NULL || psxMemWLUT == NULL || | |
6d760c92 | 181 | psxR == NULL || psxP == NULL || psxH == NULL) { |
ef79bbde | 182 | SysMessage(_("Error allocating memory!")); |
88901dd2 | 183 | psxMemShutdown(); |
ef79bbde P |
184 | return -1; |
185 | } | |
186 | ||
187 | // MemR | |
188 | for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
189 | ||
190 | memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *)); | |
191 | memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *)); | |
192 | ||
193 | psxMemRLUT[0x1f00] = (u8 *)psxP; | |
194 | psxMemRLUT[0x1f80] = (u8 *)psxH; | |
195 | ||
196 | for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16]; | |
197 | ||
198 | memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
199 | memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
200 | ||
201 | // MemW | |
202 | for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
203 | ||
204 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
205 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
206 | ||
207 | psxMemWLUT[0x1f00] = (u8 *)psxP; | |
208 | psxMemWLUT[0x1f80] = (u8 *)psxH; | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | void psxMemReset() { | |
214 | FILE *f = NULL; | |
215 | char bios[1024]; | |
216 | ||
217 | memset(psxM, 0, 0x00200000); | |
23643ee7 | 218 | memset(psxP, 0xff, 0x00010000); |
ef79bbde P |
219 | |
220 | if (strcmp(Config.Bios, "HLE") != 0) { | |
221 | sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios); | |
270c6dd1 | 222 | f = fopen_utf8(bios, "rb"); |
ef79bbde P |
223 | |
224 | if (f == NULL) { | |
225 | SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios); | |
226 | memset(psxR, 0, 0x80000); | |
227 | Config.HLE = TRUE; | |
228 | } else { | |
229 | fread(psxR, 1, 0x80000, f); | |
230 | fclose(f); | |
231 | Config.HLE = FALSE; | |
232 | } | |
233 | } else Config.HLE = TRUE; | |
234 | } | |
235 | ||
236 | void psxMemShutdown() { | |
88901dd2 | 237 | psxUnmap(psxM, 0x00210000, MAP_TAG_RAM); psxM = NULL; |
238 | psxUnmap(psxH, 0x10000, MAP_TAG_OTHER); psxH = NULL; | |
239 | psxUnmap(psxR, 0x80000, MAP_TAG_OTHER); psxR = NULL; | |
ef79bbde | 240 | |
88901dd2 | 241 | free(psxMemRLUT); psxMemRLUT = NULL; |
242 | free(psxMemWLUT); psxMemWLUT = NULL; | |
ef79bbde P |
243 | } |
244 | ||
245 | static int writeok = 1; | |
246 | ||
247 | u8 psxMemRead8(u32 mem) { | |
248 | char *p; | |
249 | u32 t; | |
250 | ||
251 | t = mem >> 16; | |
9dd7d179 | 252 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
253 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
254 | return psxHu8(mem); |
255 | else | |
256 | return psxHwRead8(mem); | |
257 | } else { | |
258 | p = (char *)(psxMemRLUT[t]); | |
259 | if (p != NULL) { | |
260 | if (Config.Debug) | |
261 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R1); | |
262 | return *(u8 *)(p + (mem & 0xffff)); | |
263 | } else { | |
264 | #ifdef PSXMEM_LOG | |
265 | PSXMEM_LOG("err lb %8.8lx\n", mem); | |
266 | #endif | |
267 | return 0; | |
268 | } | |
269 | } | |
270 | } | |
271 | ||
272 | u16 psxMemRead16(u32 mem) { | |
273 | char *p; | |
274 | u32 t; | |
275 | ||
276 | t = mem >> 16; | |
9dd7d179 | 277 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
278 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
279 | return psxHu16(mem); |
280 | else | |
281 | return psxHwRead16(mem); | |
282 | } else { | |
283 | p = (char *)(psxMemRLUT[t]); | |
284 | if (p != NULL) { | |
285 | if (Config.Debug) | |
286 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R2); | |
287 | return SWAPu16(*(u16 *)(p + (mem & 0xffff))); | |
288 | } else { | |
289 | #ifdef PSXMEM_LOG | |
290 | PSXMEM_LOG("err lh %8.8lx\n", mem); | |
291 | #endif | |
292 | return 0; | |
293 | } | |
294 | } | |
295 | } | |
296 | ||
297 | u32 psxMemRead32(u32 mem) { | |
298 | char *p; | |
299 | u32 t; | |
300 | ||
301 | t = mem >> 16; | |
9dd7d179 | 302 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
303 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
304 | return psxHu32(mem); |
305 | else | |
306 | return psxHwRead32(mem); | |
307 | } else { | |
308 | p = (char *)(psxMemRLUT[t]); | |
309 | if (p != NULL) { | |
310 | if (Config.Debug) | |
311 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R4); | |
312 | return SWAPu32(*(u32 *)(p + (mem & 0xffff))); | |
313 | } else { | |
314 | #ifdef PSXMEM_LOG | |
315 | if (writeok) { PSXMEM_LOG("err lw %8.8lx\n", mem); } | |
316 | #endif | |
317 | return 0; | |
318 | } | |
319 | } | |
320 | } | |
321 | ||
322 | void psxMemWrite8(u32 mem, u8 value) { | |
323 | char *p; | |
324 | u32 t; | |
325 | ||
326 | t = mem >> 16; | |
9dd7d179 | 327 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
328 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
329 | psxHu8(mem) = value; |
330 | else | |
331 | psxHwWrite8(mem, value); | |
332 | } else { | |
333 | p = (char *)(psxMemWLUT[t]); | |
334 | if (p != NULL) { | |
335 | if (Config.Debug) | |
336 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W1); | |
337 | *(u8 *)(p + (mem & 0xffff)) = value; | |
338 | #ifdef PSXREC | |
339 | psxCpu->Clear((mem & (~3)), 1); | |
340 | #endif | |
341 | } else { | |
342 | #ifdef PSXMEM_LOG | |
343 | PSXMEM_LOG("err sb %8.8lx\n", mem); | |
344 | #endif | |
345 | } | |
346 | } | |
347 | } | |
348 | ||
349 | void psxMemWrite16(u32 mem, u16 value) { | |
350 | char *p; | |
351 | u32 t; | |
352 | ||
353 | t = mem >> 16; | |
9dd7d179 | 354 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
355 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
356 | psxHu16ref(mem) = SWAPu16(value); |
357 | else | |
358 | psxHwWrite16(mem, value); | |
359 | } else { | |
360 | p = (char *)(psxMemWLUT[t]); | |
361 | if (p != NULL) { | |
362 | if (Config.Debug) | |
363 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W2); | |
364 | *(u16 *)(p + (mem & 0xffff)) = SWAPu16(value); | |
365 | #ifdef PSXREC | |
3e31e934 | 366 | psxCpu->Clear((mem & (~3)), 1); |
ef79bbde P |
367 | #endif |
368 | } else { | |
369 | #ifdef PSXMEM_LOG | |
370 | PSXMEM_LOG("err sh %8.8lx\n", mem); | |
371 | #endif | |
372 | } | |
373 | } | |
374 | } | |
375 | ||
376 | void psxMemWrite32(u32 mem, u32 value) { | |
377 | char *p; | |
378 | u32 t; | |
379 | ||
380 | // if ((mem&0x1fffff) == 0x71E18 || value == 0x48088800) SysPrintf("t2fix!!\n"); | |
381 | t = mem >> 16; | |
9dd7d179 | 382 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
383 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
384 | psxHu32ref(mem) = SWAPu32(value); |
385 | else | |
386 | psxHwWrite32(mem, value); | |
387 | } else { | |
388 | p = (char *)(psxMemWLUT[t]); | |
389 | if (p != NULL) { | |
390 | if (Config.Debug) | |
391 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W4); | |
392 | *(u32 *)(p + (mem & 0xffff)) = SWAPu32(value); | |
393 | #ifdef PSXREC | |
394 | psxCpu->Clear(mem, 1); | |
395 | #endif | |
396 | } else { | |
397 | if (mem != 0xfffe0130) { | |
398 | #ifdef PSXREC | |
399 | if (!writeok) | |
400 | psxCpu->Clear(mem, 1); | |
401 | #endif | |
402 | ||
403 | #ifdef PSXMEM_LOG | |
404 | if (writeok) { PSXMEM_LOG("err sw %8.8lx\n", mem); } | |
405 | #endif | |
406 | } else { | |
407 | int i; | |
408 | ||
409 | switch (value) { | |
410 | case 0x800: case 0x804: | |
411 | if (writeok == 0) break; | |
412 | writeok = 0; | |
413 | memset(psxMemWLUT + 0x0000, 0, 0x80 * sizeof(void *)); | |
414 | memset(psxMemWLUT + 0x8000, 0, 0x80 * sizeof(void *)); | |
415 | memset(psxMemWLUT + 0xa000, 0, 0x80 * sizeof(void *)); | |
416 | break; | |
417 | case 0x00: case 0x1e988: | |
418 | if (writeok == 1) break; | |
419 | writeok = 1; | |
420 | for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (void *)&psxM[(i & 0x1f) << 16]; | |
421 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
422 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
423 | break; | |
424 | default: | |
425 | #ifdef PSXMEM_LOG | |
426 | PSXMEM_LOG("unk %8.8lx = %x\n", mem, value); | |
427 | #endif | |
428 | break; | |
429 | } | |
430 | } | |
431 | } | |
432 | } | |
433 | } | |
434 | ||
435 | void *psxMemPointer(u32 mem) { | |
436 | char *p; | |
437 | u32 t; | |
438 | ||
439 | t = mem >> 16; | |
9dd7d179 | 440 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
441 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
442 | return (void *)&psxH[mem]; |
443 | else | |
444 | return NULL; | |
445 | } else { | |
446 | p = (char *)(psxMemWLUT[t]); | |
447 | if (p != NULL) { | |
448 | return (void *)(p + (mem & 0xffff)); | |
449 | } | |
450 | return NULL; | |
451 | } | |
452 | } |