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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" |
ef79bbde P |
31 | #include <sys/mman.h> |
32 | ||
33 | #ifndef MAP_ANONYMOUS | |
34 | #define MAP_ANONYMOUS MAP_ANON | |
35 | #endif | |
36 | ||
87e5b45f | 37 | void *(*psxMapHook)(unsigned long addr, size_t size, int is_fixed, |
38 | enum psxMapTag tag); | |
39 | void (*psxUnmapHook)(void *ptr, size_t size, enum psxMapTag tag); | |
40 | ||
41 | void *psxMap(unsigned long addr, size_t size, int is_fixed, | |
42 | enum psxMapTag tag) | |
43 | { | |
44 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
b0dd9956 | 45 | int tried_to_align = 0; |
46 | unsigned long mask; | |
87e5b45f | 47 | void *req, *ret; |
48 | ||
b0dd9956 | 49 | retry: |
50 | if (psxMapHook != NULL) { | |
51 | ret = psxMapHook(addr, size, is_fixed, tag); | |
52 | goto out; | |
53 | } | |
87e5b45f | 54 | |
0069615f | 55 | /* avoid MAP_FIXED, it overrides existing mappings.. */ |
56 | /* if (is_fixed) | |
57 | flags |= MAP_FIXED; */ | |
87e5b45f | 58 | |
59 | req = (void *)addr; | |
60 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); | |
61 | if (ret == MAP_FAILED) | |
62 | return NULL; | |
63 | ||
b0dd9956 | 64 | out: |
65 | if (addr != 0 && ret != (void *)addr) { | |
66 | SysMessage("psxMap: warning: wanted to map @%08x, got %p\n", | |
67 | addr, ret); | |
68 | ||
0069615f | 69 | if (is_fixed) { |
70 | psxUnmap(ret, size, tag); | |
71 | return NULL; | |
72 | } | |
73 | ||
b0dd9956 | 74 | if (ret != NULL && ((addr ^ (long)ret) & 0x00ffffff) |
75 | && !tried_to_align) | |
76 | { | |
77 | psxUnmap(ret, size, tag); | |
78 | ||
79 | // try to use similarly aligned memory instead | |
80 | // (recompiler needs this) | |
81 | mask = (addr - 1) & ~addr & 0x07ffffff; | |
82 | addr = (unsigned long)(ret + mask) & ~mask; | |
83 | tried_to_align = 1; | |
84 | goto retry; | |
85 | } | |
86 | } | |
87e5b45f | 87 | |
88 | return ret; | |
89 | } | |
90 | ||
91 | void psxUnmap(void *ptr, size_t size, enum psxMapTag tag) | |
92 | { | |
93 | if (psxUnmapHook != NULL) { | |
94 | psxUnmapHook(ptr, size, tag); | |
95 | return; | |
96 | } | |
97 | ||
98 | munmap(ptr, size); | |
99 | } | |
100 | ||
ef79bbde P |
101 | s8 *psxM = NULL; // Kernel & User Memory (2 Meg) |
102 | s8 *psxP = NULL; // Parallel Port (64K) | |
103 | s8 *psxR = NULL; // BIOS ROM (512K) | |
104 | s8 *psxH = NULL; // Scratch Pad (1K) & Hardware Registers (8K) | |
105 | ||
106 | u8 **psxMemWLUT = NULL; | |
107 | u8 **psxMemRLUT = NULL; | |
108 | ||
109 | /* Playstation Memory Map (from Playstation doc by Joshua Walker) | |
110 | 0x0000_0000-0x0000_ffff Kernel (64K) | |
111 | 0x0001_0000-0x001f_ffff User Memory (1.9 Meg) | |
112 | ||
113 | 0x1f00_0000-0x1f00_ffff Parallel Port (64K) | |
114 | ||
115 | 0x1f80_0000-0x1f80_03ff Scratch Pad (1024 bytes) | |
116 | ||
117 | 0x1f80_1000-0x1f80_2fff Hardware Registers (8K) | |
118 | ||
119 | 0x1fc0_0000-0x1fc7_ffff BIOS (512K) | |
120 | ||
121 | 0x8000_0000-0x801f_ffff Kernel and User Memory Mirror (2 Meg) Cached | |
122 | 0x9fc0_0000-0x9fc7_ffff BIOS Mirror (512K) Cached | |
123 | ||
124 | 0xa000_0000-0xa01f_ffff Kernel and User Memory Mirror (2 Meg) Uncached | |
125 | 0xbfc0_0000-0xbfc7_ffff BIOS Mirror (512K) Uncached | |
126 | */ | |
127 | ||
128 | int psxMemInit() { | |
129 | int i; | |
130 | ||
131 | psxMemRLUT = (u8 **)malloc(0x10000 * sizeof(void *)); | |
132 | psxMemWLUT = (u8 **)malloc(0x10000 * sizeof(void *)); | |
133 | memset(psxMemRLUT, 0, 0x10000 * sizeof(void *)); | |
134 | memset(psxMemWLUT, 0, 0x10000 * sizeof(void *)); | |
135 | ||
87e5b45f | 136 | psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM); |
a327ad27 | 137 | #ifndef RAM_FIXED |
a4874585 C |
138 | #ifdef __BLACKBERRY_QNX__ |
139 | if (psxM == NULL) | |
f23d3386 | 140 | psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM); |
a4874585 | 141 | #else |
87e5b45f | 142 | if (psxM == NULL) |
b0dd9956 | 143 | psxM = psxMap(0x78000000, 0x00210000, 0, MAP_TAG_RAM); |
a4874585 | 144 | #endif |
a327ad27 | 145 | #endif |
87e5b45f | 146 | if (psxM == NULL) { |
a327ad27 | 147 | SysMessage(_("mapping main RAM failed")); |
148 | return -1; | |
149 | } | |
ef79bbde P |
150 | |
151 | psxP = &psxM[0x200000]; | |
87e5b45f | 152 | psxH = psxMap(0x1f800000, 0x10000, 1, MAP_TAG_OTHER); |
153 | psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER); | |
ef79bbde P |
154 | |
155 | if (psxMemRLUT == NULL || psxMemWLUT == NULL || | |
87e5b45f | 156 | psxR == NULL || psxP == NULL || psxH != (void *)0x1f800000) { |
ef79bbde P |
157 | SysMessage(_("Error allocating memory!")); |
158 | return -1; | |
159 | } | |
160 | ||
161 | // MemR | |
162 | for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
163 | ||
164 | memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *)); | |
165 | memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *)); | |
166 | ||
167 | psxMemRLUT[0x1f00] = (u8 *)psxP; | |
168 | psxMemRLUT[0x1f80] = (u8 *)psxH; | |
169 | ||
170 | for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16]; | |
171 | ||
172 | memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
173 | memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
174 | ||
175 | // MemW | |
176 | for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
177 | ||
178 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
179 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
180 | ||
181 | psxMemWLUT[0x1f00] = (u8 *)psxP; | |
182 | psxMemWLUT[0x1f80] = (u8 *)psxH; | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | void psxMemReset() { | |
188 | FILE *f = NULL; | |
189 | char bios[1024]; | |
190 | ||
191 | memset(psxM, 0, 0x00200000); | |
192 | memset(psxP, 0, 0x00010000); | |
193 | ||
194 | if (strcmp(Config.Bios, "HLE") != 0) { | |
195 | sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios); | |
196 | f = fopen(bios, "rb"); | |
197 | ||
198 | if (f == NULL) { | |
199 | SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios); | |
200 | memset(psxR, 0, 0x80000); | |
201 | Config.HLE = TRUE; | |
202 | } else { | |
203 | fread(psxR, 1, 0x80000, f); | |
204 | fclose(f); | |
205 | Config.HLE = FALSE; | |
206 | } | |
207 | } else Config.HLE = TRUE; | |
208 | } | |
209 | ||
210 | void psxMemShutdown() { | |
87e5b45f | 211 | psxUnmap(psxM, 0x00210000, MAP_TAG_RAM); |
30773ad7 | 212 | psxUnmap(psxH, 0x10000, MAP_TAG_OTHER); |
87e5b45f | 213 | psxUnmap(psxR, 0x80000, MAP_TAG_OTHER); |
ef79bbde | 214 | |
ef79bbde P |
215 | free(psxMemRLUT); |
216 | free(psxMemWLUT); | |
217 | } | |
218 | ||
219 | static int writeok = 1; | |
220 | ||
221 | u8 psxMemRead8(u32 mem) { | |
222 | char *p; | |
223 | u32 t; | |
224 | ||
225 | t = mem >> 16; | |
9dd7d179 | 226 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
227 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
228 | return psxHu8(mem); |
229 | else | |
230 | return psxHwRead8(mem); | |
231 | } else { | |
232 | p = (char *)(psxMemRLUT[t]); | |
233 | if (p != NULL) { | |
234 | if (Config.Debug) | |
235 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R1); | |
236 | return *(u8 *)(p + (mem & 0xffff)); | |
237 | } else { | |
238 | #ifdef PSXMEM_LOG | |
239 | PSXMEM_LOG("err lb %8.8lx\n", mem); | |
240 | #endif | |
241 | return 0; | |
242 | } | |
243 | } | |
244 | } | |
245 | ||
246 | u16 psxMemRead16(u32 mem) { | |
247 | char *p; | |
248 | u32 t; | |
249 | ||
250 | t = mem >> 16; | |
9dd7d179 | 251 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
252 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
253 | return psxHu16(mem); |
254 | else | |
255 | return psxHwRead16(mem); | |
256 | } else { | |
257 | p = (char *)(psxMemRLUT[t]); | |
258 | if (p != NULL) { | |
259 | if (Config.Debug) | |
260 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R2); | |
261 | return SWAPu16(*(u16 *)(p + (mem & 0xffff))); | |
262 | } else { | |
263 | #ifdef PSXMEM_LOG | |
264 | PSXMEM_LOG("err lh %8.8lx\n", mem); | |
265 | #endif | |
266 | return 0; | |
267 | } | |
268 | } | |
269 | } | |
270 | ||
271 | u32 psxMemRead32(u32 mem) { | |
272 | char *p; | |
273 | u32 t; | |
274 | ||
275 | t = mem >> 16; | |
9dd7d179 | 276 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
277 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
278 | return psxHu32(mem); |
279 | else | |
280 | return psxHwRead32(mem); | |
281 | } else { | |
282 | p = (char *)(psxMemRLUT[t]); | |
283 | if (p != NULL) { | |
284 | if (Config.Debug) | |
285 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R4); | |
286 | return SWAPu32(*(u32 *)(p + (mem & 0xffff))); | |
287 | } else { | |
288 | #ifdef PSXMEM_LOG | |
289 | if (writeok) { PSXMEM_LOG("err lw %8.8lx\n", mem); } | |
290 | #endif | |
291 | return 0; | |
292 | } | |
293 | } | |
294 | } | |
295 | ||
296 | void psxMemWrite8(u32 mem, u8 value) { | |
297 | char *p; | |
298 | u32 t; | |
299 | ||
300 | t = mem >> 16; | |
9dd7d179 | 301 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
302 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
303 | psxHu8(mem) = value; |
304 | else | |
305 | psxHwWrite8(mem, value); | |
306 | } else { | |
307 | p = (char *)(psxMemWLUT[t]); | |
308 | if (p != NULL) { | |
309 | if (Config.Debug) | |
310 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W1); | |
311 | *(u8 *)(p + (mem & 0xffff)) = value; | |
312 | #ifdef PSXREC | |
313 | psxCpu->Clear((mem & (~3)), 1); | |
314 | #endif | |
315 | } else { | |
316 | #ifdef PSXMEM_LOG | |
317 | PSXMEM_LOG("err sb %8.8lx\n", mem); | |
318 | #endif | |
319 | } | |
320 | } | |
321 | } | |
322 | ||
323 | void psxMemWrite16(u32 mem, u16 value) { | |
324 | char *p; | |
325 | u32 t; | |
326 | ||
327 | t = mem >> 16; | |
9dd7d179 | 328 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
329 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
330 | psxHu16ref(mem) = SWAPu16(value); |
331 | else | |
332 | psxHwWrite16(mem, value); | |
333 | } else { | |
334 | p = (char *)(psxMemWLUT[t]); | |
335 | if (p != NULL) { | |
336 | if (Config.Debug) | |
337 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W2); | |
338 | *(u16 *)(p + (mem & 0xffff)) = SWAPu16(value); | |
339 | #ifdef PSXREC | |
3e31e934 | 340 | psxCpu->Clear((mem & (~3)), 1); |
ef79bbde P |
341 | #endif |
342 | } else { | |
343 | #ifdef PSXMEM_LOG | |
344 | PSXMEM_LOG("err sh %8.8lx\n", mem); | |
345 | #endif | |
346 | } | |
347 | } | |
348 | } | |
349 | ||
350 | void psxMemWrite32(u32 mem, u32 value) { | |
351 | char *p; | |
352 | u32 t; | |
353 | ||
354 | // if ((mem&0x1fffff) == 0x71E18 || value == 0x48088800) SysPrintf("t2fix!!\n"); | |
355 | t = mem >> 16; | |
9dd7d179 | 356 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
357 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
358 | psxHu32ref(mem) = SWAPu32(value); |
359 | else | |
360 | psxHwWrite32(mem, value); | |
361 | } else { | |
362 | p = (char *)(psxMemWLUT[t]); | |
363 | if (p != NULL) { | |
364 | if (Config.Debug) | |
365 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W4); | |
366 | *(u32 *)(p + (mem & 0xffff)) = SWAPu32(value); | |
367 | #ifdef PSXREC | |
368 | psxCpu->Clear(mem, 1); | |
369 | #endif | |
370 | } else { | |
371 | if (mem != 0xfffe0130) { | |
372 | #ifdef PSXREC | |
373 | if (!writeok) | |
374 | psxCpu->Clear(mem, 1); | |
375 | #endif | |
376 | ||
377 | #ifdef PSXMEM_LOG | |
378 | if (writeok) { PSXMEM_LOG("err sw %8.8lx\n", mem); } | |
379 | #endif | |
380 | } else { | |
381 | int i; | |
382 | ||
383 | switch (value) { | |
384 | case 0x800: case 0x804: | |
385 | if (writeok == 0) break; | |
386 | writeok = 0; | |
387 | memset(psxMemWLUT + 0x0000, 0, 0x80 * sizeof(void *)); | |
388 | memset(psxMemWLUT + 0x8000, 0, 0x80 * sizeof(void *)); | |
389 | memset(psxMemWLUT + 0xa000, 0, 0x80 * sizeof(void *)); | |
390 | break; | |
391 | case 0x00: case 0x1e988: | |
392 | if (writeok == 1) break; | |
393 | writeok = 1; | |
394 | for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (void *)&psxM[(i & 0x1f) << 16]; | |
395 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
396 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
397 | break; | |
398 | default: | |
399 | #ifdef PSXMEM_LOG | |
400 | PSXMEM_LOG("unk %8.8lx = %x\n", mem, value); | |
401 | #endif | |
402 | break; | |
403 | } | |
404 | } | |
405 | } | |
406 | } | |
407 | } | |
408 | ||
409 | void *psxMemPointer(u32 mem) { | |
410 | char *p; | |
411 | u32 t; | |
412 | ||
413 | t = mem >> 16; | |
9dd7d179 | 414 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
415 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
416 | return (void *)&psxH[mem]; |
417 | else | |
418 | return NULL; | |
419 | } else { | |
420 | p = (char *)(psxMemWLUT[t]); | |
421 | if (p != NULL) { | |
422 | return (void *)(p + (mem & 0xffff)); | |
423 | } | |
424 | return NULL; | |
425 | } | |
426 | } |