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