1 /***************************************************************************
2 * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
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. *
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. *
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 ***************************************************************************/
21 * PSX memory functions.
24 // TODO: Implement caches & cycle penalty.
26 #include <compat/fopen_utf8.h>
29 #include "psxmem_map.h"
37 #define MAP_ANONYMOUS MAP_ANON
40 void *(*psxMapHook)(unsigned long addr, size_t size, int is_fixed,
42 void (*psxUnmapHook)(void *ptr, size_t size, enum psxMapTag tag);
44 void *psxMap(unsigned long addr, size_t size, int is_fixed,
48 #ifdef MAP_FIXED_NOREPLACE
49 int flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED_NOREPLACE;
51 int flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED;
54 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
62 if (psxMapHook != NULL) {
63 ret = psxMapHook(addr, size, 0, tag);
68 /* avoid MAP_FIXED, it overrides existing mappings.. */
70 flags |= MAP_FIXED; */
73 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
74 if (ret == MAP_FAILED)
78 if (addr != 0 && ret != (void *)addr) {
79 SysMessage("psxMap: warning: wanted to map @%08x, got %p\n",
83 psxUnmap(ret, size, tag);
87 if (((addr ^ (unsigned long)ret) & ~0xff000000l) && try_ < 2)
89 psxUnmap(ret, size, tag);
91 // try to use similarly aligned memory instead
92 // (recompiler needs this)
93 mask = try_ ? 0xffff : 0xffffff;
94 addr = ((unsigned long)ret + mask) & ~mask;
103 void psxUnmap(void *ptr, size_t size, enum psxMapTag tag)
105 if (psxUnmapHook != NULL) {
106 psxUnmapHook(ptr, size, tag);
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)
119 u8 **psxMemWLUT = NULL;
120 u8 **psxMemRLUT = NULL;
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)
126 0x1f00_0000-0x1f00_ffff Parallel Port (64K)
128 0x1f80_0000-0x1f80_03ff Scratch Pad (1024 bytes)
130 0x1f80_1000-0x1f80_2fff Hardware Registers (8K)
132 0x1fc0_0000-0x1fc7_ffff BIOS (512K)
134 0x8000_0000-0x801f_ffff Kernel and User Memory Mirror (2 Meg) Cached
135 0x9fc0_0000-0x9fc7_ffff BIOS Mirror (512K) Cached
137 0xa000_0000-0xa01f_ffff Kernel and User Memory Mirror (2 Meg) Uncached
138 0xbfc0_0000-0xbfc7_ffff BIOS Mirror (512K) Uncached
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 *));
150 psxM = psxMap(0x30000000, 0x00210000, 1, MAP_TAG_RAM);
152 psxM = psxMap(0x70000000, 0x00210000, 1, MAP_TAG_RAM);
155 psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM);
159 psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM);
162 SysMessage(_("mapping main RAM failed"));
166 psxP = &psxM[0x200000];
168 psxH = psxMap(0x4f800000, 0x10000, 0, MAP_TAG_OTHER);
170 psxH = psxMap(0x8f800000, 0x10000, 0, MAP_TAG_OTHER);
172 psxR = psxMap(0x4fc00000, 0x80000, 0, MAP_TAG_OTHER);
174 psxR = psxMap(0x8fc00000, 0x80000, 0, MAP_TAG_OTHER);
176 psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER);
177 psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER);
180 if (psxMemRLUT == NULL || psxMemWLUT == NULL ||
181 psxR == NULL || psxP == NULL || psxH == NULL) {
182 SysMessage(_("Error allocating memory!"));
188 for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];
190 memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *));
191 memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *));
193 psxMemRLUT[0x1f00] = (u8 *)psxP;
194 psxMemRLUT[0x1f80] = (u8 *)psxH;
196 for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16];
198 memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));
199 memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));
202 for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];
204 memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *));
205 memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *));
207 psxMemWLUT[0x1f00] = (u8 *)psxP;
208 psxMemWLUT[0x1f80] = (u8 *)psxH;
217 memset(psxM, 0, 0x00200000);
218 memset(psxP, 0xff, 0x00010000);
220 if (strcmp(Config.Bios, "HLE") != 0) {
221 sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios);
222 f = fopen_utf8(bios, "rb");
225 SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios);
226 memset(psxR, 0, 0x80000);
229 fread(psxR, 1, 0x80000, f);
233 } else Config.HLE = TRUE;
236 void psxMemShutdown() {
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;
241 free(psxMemRLUT); psxMemRLUT = NULL;
242 free(psxMemWLUT); psxMemWLUT = NULL;
245 static int writeok = 1;
247 u8 psxMemRead8(u32 mem) {
252 if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
253 if ((mem & 0xffff) < 0x400)
256 return psxHwRead8(mem);
258 p = (char *)(psxMemRLUT[t]);
261 DebugCheckBP((mem & 0xffffff) | 0x80000000, R1);
262 return *(u8 *)(p + (mem & 0xffff));
265 PSXMEM_LOG("err lb %8.8lx\n", mem);
272 u16 psxMemRead16(u32 mem) {
277 if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
278 if ((mem & 0xffff) < 0x400)
281 return psxHwRead16(mem);
283 p = (char *)(psxMemRLUT[t]);
286 DebugCheckBP((mem & 0xffffff) | 0x80000000, R2);
287 return SWAPu16(*(u16 *)(p + (mem & 0xffff)));
290 PSXMEM_LOG("err lh %8.8lx\n", mem);
297 u32 psxMemRead32(u32 mem) {
302 if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
303 if ((mem & 0xffff) < 0x400)
306 return psxHwRead32(mem);
308 p = (char *)(psxMemRLUT[t]);
311 DebugCheckBP((mem & 0xffffff) | 0x80000000, R4);
312 return SWAPu32(*(u32 *)(p + (mem & 0xffff)));
315 if (writeok) { PSXMEM_LOG("err lw %8.8lx\n", mem); }
322 void psxMemWrite8(u32 mem, u8 value) {
327 if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
328 if ((mem & 0xffff) < 0x400)
331 psxHwWrite8(mem, value);
333 p = (char *)(psxMemWLUT[t]);
336 DebugCheckBP((mem & 0xffffff) | 0x80000000, W1);
337 *(u8 *)(p + (mem & 0xffff)) = value;
339 psxCpu->Clear((mem & (~3)), 1);
343 PSXMEM_LOG("err sb %8.8lx\n", mem);
349 void psxMemWrite16(u32 mem, u16 value) {
354 if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
355 if ((mem & 0xffff) < 0x400)
356 psxHu16ref(mem) = SWAPu16(value);
358 psxHwWrite16(mem, value);
360 p = (char *)(psxMemWLUT[t]);
363 DebugCheckBP((mem & 0xffffff) | 0x80000000, W2);
364 *(u16 *)(p + (mem & 0xffff)) = SWAPu16(value);
366 psxCpu->Clear((mem & (~3)), 1);
370 PSXMEM_LOG("err sh %8.8lx\n", mem);
376 void psxMemWrite32(u32 mem, u32 value) {
380 // if ((mem&0x1fffff) == 0x71E18 || value == 0x48088800) SysPrintf("t2fix!!\n");
382 if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
383 if ((mem & 0xffff) < 0x400)
384 psxHu32ref(mem) = SWAPu32(value);
386 psxHwWrite32(mem, value);
388 p = (char *)(psxMemWLUT[t]);
391 DebugCheckBP((mem & 0xffffff) | 0x80000000, W4);
392 *(u32 *)(p + (mem & 0xffff)) = SWAPu32(value);
394 psxCpu->Clear(mem, 1);
397 if (mem != 0xfffe0130) {
400 psxCpu->Clear(mem, 1);
404 if (writeok) { PSXMEM_LOG("err sw %8.8lx\n", mem); }
410 case 0x800: case 0x804:
411 if (writeok == 0) break;
413 memset(psxMemWLUT + 0x0000, 0, 0x80 * sizeof(void *));
414 memset(psxMemWLUT + 0x8000, 0, 0x80 * sizeof(void *));
415 memset(psxMemWLUT + 0xa000, 0, 0x80 * sizeof(void *));
417 case 0x00: case 0x1e988:
418 if (writeok == 1) break;
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 *));
426 PSXMEM_LOG("unk %8.8lx = %x\n", mem, value);
435 void *psxMemPointer(u32 mem) {
440 if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
441 if ((mem & 0xffff) < 0x400)
442 return (void *)&psxH[mem];
446 p = (char *)(psxMemWLUT[t]);
448 return (void *)(p + (mem & 0xffff));