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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 | { | |
45 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
b0dd9956 | 46 | int tried_to_align = 0; |
47 | unsigned long mask; | |
87e5b45f | 48 | void *req, *ret; |
49 | ||
b0dd9956 | 50 | retry: |
51 | if (psxMapHook != NULL) { | |
52 | ret = psxMapHook(addr, size, is_fixed, tag); | |
53 | goto out; | |
54 | } | |
87e5b45f | 55 | |
0069615f | 56 | /* avoid MAP_FIXED, it overrides existing mappings.. */ |
57 | /* if (is_fixed) | |
58 | flags |= MAP_FIXED; */ | |
87e5b45f | 59 | |
60 | req = (void *)addr; | |
61 | ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0); | |
62 | if (ret == MAP_FAILED) | |
63 | return NULL; | |
64 | ||
b0dd9956 | 65 | out: |
66 | if (addr != 0 && ret != (void *)addr) { | |
67 | SysMessage("psxMap: warning: wanted to map @%08x, got %p\n", | |
68 | addr, ret); | |
69 | ||
0069615f | 70 | if (is_fixed) { |
71 | psxUnmap(ret, size, tag); | |
72 | return NULL; | |
73 | } | |
74 | ||
b0dd9956 | 75 | if (ret != NULL && ((addr ^ (long)ret) & 0x00ffffff) |
76 | && !tried_to_align) | |
77 | { | |
78 | psxUnmap(ret, size, tag); | |
79 | ||
80 | // try to use similarly aligned memory instead | |
81 | // (recompiler needs this) | |
82 | mask = (addr - 1) & ~addr & 0x07ffffff; | |
83 | addr = (unsigned long)(ret + mask) & ~mask; | |
84 | tried_to_align = 1; | |
85 | goto retry; | |
86 | } | |
87 | } | |
87e5b45f | 88 | |
89 | return ret; | |
90 | } | |
91 | ||
92 | void psxUnmap(void *ptr, size_t size, enum psxMapTag tag) | |
93 | { | |
94 | if (psxUnmapHook != NULL) { | |
95 | psxUnmapHook(ptr, size, tag); | |
96 | return; | |
97 | } | |
98 | ||
88901dd2 | 99 | if (ptr) |
100 | munmap(ptr, size); | |
87e5b45f | 101 | } |
102 | ||
ef79bbde P |
103 | s8 *psxM = NULL; // Kernel & User Memory (2 Meg) |
104 | s8 *psxP = NULL; // Parallel Port (64K) | |
105 | s8 *psxR = NULL; // BIOS ROM (512K) | |
106 | s8 *psxH = NULL; // Scratch Pad (1K) & Hardware Registers (8K) | |
107 | ||
108 | u8 **psxMemWLUT = NULL; | |
109 | u8 **psxMemRLUT = NULL; | |
110 | ||
111 | /* Playstation Memory Map (from Playstation doc by Joshua Walker) | |
112 | 0x0000_0000-0x0000_ffff Kernel (64K) | |
113 | 0x0001_0000-0x001f_ffff User Memory (1.9 Meg) | |
114 | ||
115 | 0x1f00_0000-0x1f00_ffff Parallel Port (64K) | |
116 | ||
117 | 0x1f80_0000-0x1f80_03ff Scratch Pad (1024 bytes) | |
118 | ||
119 | 0x1f80_1000-0x1f80_2fff Hardware Registers (8K) | |
120 | ||
121 | 0x1fc0_0000-0x1fc7_ffff BIOS (512K) | |
122 | ||
123 | 0x8000_0000-0x801f_ffff Kernel and User Memory Mirror (2 Meg) Cached | |
124 | 0x9fc0_0000-0x9fc7_ffff BIOS Mirror (512K) Cached | |
125 | ||
126 | 0xa000_0000-0xa01f_ffff Kernel and User Memory Mirror (2 Meg) Uncached | |
127 | 0xbfc0_0000-0xbfc7_ffff BIOS Mirror (512K) Uncached | |
128 | */ | |
129 | ||
130 | int psxMemInit() { | |
131 | int i; | |
132 | ||
133 | psxMemRLUT = (u8 **)malloc(0x10000 * sizeof(void *)); | |
134 | psxMemWLUT = (u8 **)malloc(0x10000 * sizeof(void *)); | |
135 | memset(psxMemRLUT, 0, 0x10000 * sizeof(void *)); | |
136 | memset(psxMemWLUT, 0, 0x10000 * sizeof(void *)); | |
137 | ||
87e5b45f | 138 | psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM); |
a327ad27 | 139 | #ifndef RAM_FIXED |
a4874585 C |
140 | #ifdef __BLACKBERRY_QNX__ |
141 | if (psxM == NULL) | |
f23d3386 | 142 | psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM); |
a4874585 | 143 | #else |
87e5b45f | 144 | if (psxM == NULL) |
b0dd9956 | 145 | psxM = psxMap(0x78000000, 0x00210000, 0, MAP_TAG_RAM); |
a4874585 | 146 | #endif |
a327ad27 | 147 | #endif |
87e5b45f | 148 | if (psxM == NULL) { |
a327ad27 | 149 | SysMessage(_("mapping main RAM failed")); |
150 | return -1; | |
151 | } | |
ef79bbde P |
152 | |
153 | psxP = &psxM[0x200000]; | |
6d760c92 | 154 | psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER); |
87e5b45f | 155 | psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER); |
ef79bbde P |
156 | |
157 | if (psxMemRLUT == NULL || psxMemWLUT == NULL || | |
6d760c92 | 158 | psxR == NULL || psxP == NULL || psxH == NULL) { |
ef79bbde | 159 | SysMessage(_("Error allocating memory!")); |
88901dd2 | 160 | psxMemShutdown(); |
ef79bbde P |
161 | return -1; |
162 | } | |
163 | ||
164 | // MemR | |
165 | for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
166 | ||
167 | memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *)); | |
168 | memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *)); | |
169 | ||
170 | psxMemRLUT[0x1f00] = (u8 *)psxP; | |
171 | psxMemRLUT[0x1f80] = (u8 *)psxH; | |
172 | ||
173 | for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16]; | |
174 | ||
175 | memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
176 | memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *)); | |
177 | ||
178 | // MemW | |
179 | for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16]; | |
180 | ||
181 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
182 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
183 | ||
184 | psxMemWLUT[0x1f00] = (u8 *)psxP; | |
185 | psxMemWLUT[0x1f80] = (u8 *)psxH; | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | void psxMemReset() { | |
191 | FILE *f = NULL; | |
192 | char bios[1024]; | |
193 | ||
194 | memset(psxM, 0, 0x00200000); | |
195 | memset(psxP, 0, 0x00010000); | |
196 | ||
197 | if (strcmp(Config.Bios, "HLE") != 0) { | |
198 | sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios); | |
199 | f = fopen(bios, "rb"); | |
200 | ||
201 | if (f == NULL) { | |
202 | SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios); | |
203 | memset(psxR, 0, 0x80000); | |
204 | Config.HLE = TRUE; | |
205 | } else { | |
206 | fread(psxR, 1, 0x80000, f); | |
207 | fclose(f); | |
208 | Config.HLE = FALSE; | |
209 | } | |
210 | } else Config.HLE = TRUE; | |
211 | } | |
212 | ||
213 | void psxMemShutdown() { | |
88901dd2 | 214 | psxUnmap(psxM, 0x00210000, MAP_TAG_RAM); psxM = NULL; |
215 | psxUnmap(psxH, 0x10000, MAP_TAG_OTHER); psxH = NULL; | |
216 | psxUnmap(psxR, 0x80000, MAP_TAG_OTHER); psxR = NULL; | |
ef79bbde | 217 | |
88901dd2 | 218 | free(psxMemRLUT); psxMemRLUT = NULL; |
219 | free(psxMemWLUT); psxMemWLUT = NULL; | |
ef79bbde P |
220 | } |
221 | ||
222 | static int writeok = 1; | |
223 | ||
224 | u8 psxMemRead8(u32 mem) { | |
225 | char *p; | |
226 | u32 t; | |
227 | ||
228 | t = mem >> 16; | |
9dd7d179 | 229 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
230 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
231 | return psxHu8(mem); |
232 | else | |
233 | return psxHwRead8(mem); | |
234 | } else { | |
235 | p = (char *)(psxMemRLUT[t]); | |
236 | if (p != NULL) { | |
237 | if (Config.Debug) | |
238 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R1); | |
239 | return *(u8 *)(p + (mem & 0xffff)); | |
240 | } else { | |
241 | #ifdef PSXMEM_LOG | |
242 | PSXMEM_LOG("err lb %8.8lx\n", mem); | |
243 | #endif | |
244 | return 0; | |
245 | } | |
246 | } | |
247 | } | |
248 | ||
249 | u16 psxMemRead16(u32 mem) { | |
250 | char *p; | |
251 | u32 t; | |
252 | ||
253 | t = mem >> 16; | |
9dd7d179 | 254 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
255 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
256 | return psxHu16(mem); |
257 | else | |
258 | return psxHwRead16(mem); | |
259 | } else { | |
260 | p = (char *)(psxMemRLUT[t]); | |
261 | if (p != NULL) { | |
262 | if (Config.Debug) | |
263 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R2); | |
264 | return SWAPu16(*(u16 *)(p + (mem & 0xffff))); | |
265 | } else { | |
266 | #ifdef PSXMEM_LOG | |
267 | PSXMEM_LOG("err lh %8.8lx\n", mem); | |
268 | #endif | |
269 | return 0; | |
270 | } | |
271 | } | |
272 | } | |
273 | ||
274 | u32 psxMemRead32(u32 mem) { | |
275 | char *p; | |
276 | u32 t; | |
277 | ||
278 | t = mem >> 16; | |
9dd7d179 | 279 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
280 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
281 | return psxHu32(mem); |
282 | else | |
283 | return psxHwRead32(mem); | |
284 | } else { | |
285 | p = (char *)(psxMemRLUT[t]); | |
286 | if (p != NULL) { | |
287 | if (Config.Debug) | |
288 | DebugCheckBP((mem & 0xffffff) | 0x80000000, R4); | |
289 | return SWAPu32(*(u32 *)(p + (mem & 0xffff))); | |
290 | } else { | |
291 | #ifdef PSXMEM_LOG | |
292 | if (writeok) { PSXMEM_LOG("err lw %8.8lx\n", mem); } | |
293 | #endif | |
294 | return 0; | |
295 | } | |
296 | } | |
297 | } | |
298 | ||
299 | void psxMemWrite8(u32 mem, u8 value) { | |
300 | char *p; | |
301 | u32 t; | |
302 | ||
303 | t = mem >> 16; | |
9dd7d179 | 304 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
305 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
306 | psxHu8(mem) = value; |
307 | else | |
308 | psxHwWrite8(mem, value); | |
309 | } else { | |
310 | p = (char *)(psxMemWLUT[t]); | |
311 | if (p != NULL) { | |
312 | if (Config.Debug) | |
313 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W1); | |
314 | *(u8 *)(p + (mem & 0xffff)) = value; | |
315 | #ifdef PSXREC | |
316 | psxCpu->Clear((mem & (~3)), 1); | |
317 | #endif | |
318 | } else { | |
319 | #ifdef PSXMEM_LOG | |
320 | PSXMEM_LOG("err sb %8.8lx\n", mem); | |
321 | #endif | |
322 | } | |
323 | } | |
324 | } | |
325 | ||
326 | void psxMemWrite16(u32 mem, u16 value) { | |
327 | char *p; | |
328 | u32 t; | |
329 | ||
330 | t = mem >> 16; | |
9dd7d179 | 331 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
332 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
333 | psxHu16ref(mem) = SWAPu16(value); |
334 | else | |
335 | psxHwWrite16(mem, value); | |
336 | } else { | |
337 | p = (char *)(psxMemWLUT[t]); | |
338 | if (p != NULL) { | |
339 | if (Config.Debug) | |
340 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W2); | |
341 | *(u16 *)(p + (mem & 0xffff)) = SWAPu16(value); | |
342 | #ifdef PSXREC | |
3e31e934 | 343 | psxCpu->Clear((mem & (~3)), 1); |
ef79bbde P |
344 | #endif |
345 | } else { | |
346 | #ifdef PSXMEM_LOG | |
347 | PSXMEM_LOG("err sh %8.8lx\n", mem); | |
348 | #endif | |
349 | } | |
350 | } | |
351 | } | |
352 | ||
353 | void psxMemWrite32(u32 mem, u32 value) { | |
354 | char *p; | |
355 | u32 t; | |
356 | ||
357 | // if ((mem&0x1fffff) == 0x71E18 || value == 0x48088800) SysPrintf("t2fix!!\n"); | |
358 | t = mem >> 16; | |
9dd7d179 | 359 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
360 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
361 | psxHu32ref(mem) = SWAPu32(value); |
362 | else | |
363 | psxHwWrite32(mem, value); | |
364 | } else { | |
365 | p = (char *)(psxMemWLUT[t]); | |
366 | if (p != NULL) { | |
367 | if (Config.Debug) | |
368 | DebugCheckBP((mem & 0xffffff) | 0x80000000, W4); | |
369 | *(u32 *)(p + (mem & 0xffff)) = SWAPu32(value); | |
370 | #ifdef PSXREC | |
371 | psxCpu->Clear(mem, 1); | |
372 | #endif | |
373 | } else { | |
374 | if (mem != 0xfffe0130) { | |
375 | #ifdef PSXREC | |
376 | if (!writeok) | |
377 | psxCpu->Clear(mem, 1); | |
378 | #endif | |
379 | ||
380 | #ifdef PSXMEM_LOG | |
381 | if (writeok) { PSXMEM_LOG("err sw %8.8lx\n", mem); } | |
382 | #endif | |
383 | } else { | |
384 | int i; | |
385 | ||
386 | switch (value) { | |
387 | case 0x800: case 0x804: | |
388 | if (writeok == 0) break; | |
389 | writeok = 0; | |
390 | memset(psxMemWLUT + 0x0000, 0, 0x80 * sizeof(void *)); | |
391 | memset(psxMemWLUT + 0x8000, 0, 0x80 * sizeof(void *)); | |
392 | memset(psxMemWLUT + 0xa000, 0, 0x80 * sizeof(void *)); | |
393 | break; | |
394 | case 0x00: case 0x1e988: | |
395 | if (writeok == 1) break; | |
396 | writeok = 1; | |
397 | for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (void *)&psxM[(i & 0x1f) << 16]; | |
398 | memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *)); | |
399 | memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *)); | |
400 | break; | |
401 | default: | |
402 | #ifdef PSXMEM_LOG | |
403 | PSXMEM_LOG("unk %8.8lx = %x\n", mem, value); | |
404 | #endif | |
405 | break; | |
406 | } | |
407 | } | |
408 | } | |
409 | } | |
410 | } | |
411 | ||
412 | void *psxMemPointer(u32 mem) { | |
413 | char *p; | |
414 | u32 t; | |
415 | ||
416 | t = mem >> 16; | |
9dd7d179 | 417 | if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) { |
418 | if ((mem & 0xffff) < 0x400) | |
ef79bbde P |
419 | return (void *)&psxH[mem]; |
420 | else | |
421 | return NULL; | |
422 | } else { | |
423 | p = (char *)(psxMemWLUT[t]); | |
424 | if (p != NULL) { | |
425 | return (void *)(p + (mem & 0xffff)); | |
426 | } | |
427 | return NULL; | |
428 | } | |
429 | } |