dma: don't generate irqs after aborted DMA
[pcsx_rearmed.git] / libpcsxcore / new_dynarec / pcsxmem.c
CommitLineData
7e605697 1/*
274c4243 2 * (C) GraÅžvydas "notaz" Ignotas, 2010-2011
7e605697 3 *
4 * This work is licensed under the terms of GNU GPL version 2 or later.
5 * See the COPYING file in the top-level directory.
6 */
7
8#include <stdio.h>
9#include "../psxhw.h"
10#include "../cdrom.h"
11#include "../mdec.h"
12#include "emu_if.h"
13#include "pcsxmem.h"
14
15//#define memprintf printf
16#define memprintf(...)
17
274c4243 18int pcsx_ram_is_ro;
7a481d40 19
7e605697 20static void read_mem8()
21{
22 memprintf("ari64_read_mem8 %08x @%08x %u\n", address, psxRegs.pc, psxRegs.cycle);
23 readmem_word = psxMemRead8(address) & 0xff;
24}
25
26static void read_mem16()
27{
28 memprintf("ari64_read_mem16 %08x @%08x %u\n", address, psxRegs.pc, psxRegs.cycle);
29 readmem_word = psxMemRead16(address) & 0xffff;
30}
31
32static void read_mem32()
33{
34 memprintf("ari64_read_mem32 %08x @%08x %u\n", address, psxRegs.pc, psxRegs.cycle);
35 readmem_word = psxMemRead32(address);
36}
37
38static void write_mem8()
39{
40 memprintf("ari64_write_mem8 %08x, %02x @%08x %u\n", address, byte, psxRegs.pc, psxRegs.cycle);
41 psxMemWrite8(address, byte);
42}
43
44static void write_mem16()
45{
46 memprintf("ari64_write_mem16 %08x, %04x @%08x %u\n", address, hword, psxRegs.pc, psxRegs.cycle);
47 psxMemWrite16(address, hword);
48}
49
50static void write_mem32()
51{
52 memprintf("ari64_write_mem32 %08x, %08x @%08x %u\n", address, word, psxRegs.pc, psxRegs.cycle);
53 psxMemWrite32(address, word);
54}
55
56static void read_mem_dummy()
57{
58 readmem_word = 0;
59}
60
61static void write_mem_dummy()
62{
63}
64
65extern void ari_read_ram8();
66extern void ari_read_ram16();
67extern void ari_read_ram32();
68extern void ari_read_ram_mirror8();
69extern void ari_read_ram_mirror16();
70extern void ari_read_ram_mirror32();
71extern void ari_write_ram8();
72extern void ari_write_ram16();
73extern void ari_write_ram32();
74extern void ari_write_ram_mirror8();
75extern void ari_write_ram_mirror16();
76extern void ari_write_ram_mirror32();
274c4243 77extern void ari_write_ram_mirror_ro32();
a06c1d6e 78extern void ari_read_bios8();
79extern void ari_read_bios16();
80extern void ari_read_bios32();
7e605697 81extern void ari_read_io8();
82extern void ari_read_io16();
83extern void ari_read_io32();
84extern void ari_write_io8();
85extern void ari_write_io16();
86extern void ari_write_io32();
87
88void (*readmem[0x10000])();
89void (*readmemb[0x10000])();
90void (*readmemh[0x10000])();
91void (*writemem[0x10000])();
92void (*writememb[0x10000])();
93void (*writememh[0x10000])();
94
7a481d40 95static void write_biu()
96{
97 memprintf("write_biu %08x, %08x @%08x %u\n", address, word, psxRegs.pc, psxRegs.cycle);
98
99 if (address != 0xfffe0130)
100 return;
101
102 switch (word) {
103 case 0x800: case 0x804:
274c4243 104 pcsx_ram_is_ro = 1;
7a481d40 105 break;
106 case 0: case 0x1e988:
274c4243 107 pcsx_ram_is_ro = 0;
7a481d40 108 break;
109 default:
110 memprintf("write_biu: unexpected val: %08x\n", word);
111 break;
112 }
113}
114
7e605697 115/* IO handlers */
116static u32 io_read_sio16()
117{
118 return sioRead8() | (sioRead8() << 8);
119}
120
121static u32 io_read_sio32()
122{
123 return sioRead8() | (sioRead8() << 8) | (sioRead8() << 16) | (sioRead8() << 24);
124}
125
126static void io_write_sio16(u32 value)
127{
128 sioWrite8((unsigned char)value);
129 sioWrite8((unsigned char)(value>>8));
130}
131
132static void io_write_sio32(u32 value)
133{
134 sioWrite8((unsigned char)value);
135 sioWrite8((unsigned char)((value&0xff) >> 8));
136 sioWrite8((unsigned char)((value&0xff) >> 16));
137 sioWrite8((unsigned char)((value&0xff) >> 24));
138}
139
140#define make_rcnt_funcs(i) \
141static u32 io_rcnt_read_count##i() { return psxRcntRcount(i); } \
142static u32 io_rcnt_read_mode##i() { return psxRcntRmode(i); } \
143static u32 io_rcnt_read_target##i() { return psxRcntRtarget(i); } \
144static void io_rcnt_write_count##i(u32 val) { psxRcntWcount(i, val & 0xffff); } \
145static void io_rcnt_write_mode##i(u32 val) { psxRcntWmode(i, val); } \
146static void io_rcnt_write_target##i(u32 val) { psxRcntWtarget(i, val & 0xffff); }
147
148make_rcnt_funcs(0)
149make_rcnt_funcs(1)
150make_rcnt_funcs(2)
151
152static void io_write_ireg16(u32 value)
153{
154 if (Config.Sio) psxHu16ref(0x1070) |= 0x80;
155 if (Config.SpuIrq) psxHu16ref(0x1070) |= 0x200;
156 psxHu16ref(0x1070) &= psxHu16(0x1074) & value;
157}
158
159static void io_write_imask16(u32 value)
160{
161 psxHu16ref(0x1074) = value;
162 if (psxHu16ref(0x1070) & value)
d28b54b1 163 new_dyna_set_event(PSXINT_NEWDRC_CHECK, 1);
7e605697 164}
165
166static void io_write_ireg32(u32 value)
167{
168 if (Config.Sio) psxHu32ref(0x1070) |= 0x80;
169 if (Config.SpuIrq) psxHu32ref(0x1070) |= 0x200;
170 psxHu32ref(0x1070) &= psxHu32(0x1074) & value;
171}
172
173static void io_write_imask32(u32 value)
174{
175 psxHu32ref(0x1074) = value;
176 if (psxHu32ref(0x1070) & value)
d28b54b1 177 new_dyna_set_event(PSXINT_NEWDRC_CHECK, 1);
7e605697 178}
179
180static void io_write_dma_icr32(u32 value)
181{
182 u32 tmp = ~value & HW_DMA_ICR;
183 HW_DMA_ICR = ((tmp ^ value) & 0xffffff) ^ tmp;
184}
185
186#define make_dma_func(n) \
187static void io_write_chcr##n(u32 value) \
188{ \
189 HW_DMA##n##_CHCR = value; \
190 if (value & 0x01000000 && HW_DMA_PCR & (8 << (n * 4))) { \
191 psxDma##n(HW_DMA##n##_MADR, HW_DMA##n##_BCR, value); \
192 } \
193}
194
195make_dma_func(0)
196make_dma_func(1)
197make_dma_func(2)
198make_dma_func(3)
199make_dma_func(4)
200make_dma_func(6)
201
202/* IO tables for 1000-1880 */
203#define IOADR8(a) ((a) & 0xfff)
204#define IOADR16(a) (((a) & 0xfff) >> 1)
205#define IOADR32(a) (((a) & 0xfff) >> 2)
206
207static const void *io_read8 [0x880] = {
208 [IOADR8(0x1040)] = sioRead8,
209 [IOADR8(0x1800)] = cdrRead0,
210 [IOADR8(0x1801)] = cdrRead1,
211 [IOADR8(0x1802)] = cdrRead2,
212 [IOADR8(0x1803)] = cdrRead3,
213};
214static const void *io_read16[0x880/2] = {
215 [IOADR16(0x1040)] = io_read_sio16,
216 [IOADR16(0x1044)] = sioReadStat16,
217 [IOADR16(0x1048)] = sioReadMode16,
218 [IOADR16(0x104a)] = sioReadCtrl16,
219 [IOADR16(0x104e)] = sioReadBaud16,
220 [IOADR16(0x1100)] = io_rcnt_read_count0,
221 [IOADR16(0x1104)] = io_rcnt_read_mode0,
222 [IOADR16(0x1108)] = io_rcnt_read_target0,
223 [IOADR16(0x1110)] = io_rcnt_read_count1,
224 [IOADR16(0x1114)] = io_rcnt_read_mode1,
225 [IOADR16(0x1118)] = io_rcnt_read_target1,
226 [IOADR16(0x1120)] = io_rcnt_read_count2,
227 [IOADR16(0x1124)] = io_rcnt_read_mode2,
228 [IOADR16(0x1128)] = io_rcnt_read_target2,
229};
230static const void *io_read32[0x880/4] = {
231 [IOADR32(0x1040)] = io_read_sio32,
232 [IOADR32(0x1100)] = io_rcnt_read_count0,
233 [IOADR32(0x1104)] = io_rcnt_read_mode0,
234 [IOADR32(0x1108)] = io_rcnt_read_target0,
235 [IOADR32(0x1110)] = io_rcnt_read_count1,
236 [IOADR32(0x1114)] = io_rcnt_read_mode1,
237 [IOADR32(0x1118)] = io_rcnt_read_target1,
238 [IOADR32(0x1120)] = io_rcnt_read_count2,
239 [IOADR32(0x1124)] = io_rcnt_read_mode2,
240 [IOADR32(0x1128)] = io_rcnt_read_target2,
241// [IOADR32(0x1810)] = GPU_readData,
242// [IOADR32(0x1814)] = GPU_readStatus,
243 [IOADR32(0x1820)] = mdecRead0,
244 [IOADR32(0x1824)] = mdecRead1,
245};
246// write(u32 val)
247static const void *io_write8 [0x880] = {
248 [IOADR8(0x1040)] = sioWrite8,
249 [IOADR8(0x1800)] = cdrWrite0,
250 [IOADR8(0x1801)] = cdrWrite1,
251 [IOADR8(0x1802)] = cdrWrite2,
252 [IOADR8(0x1803)] = cdrWrite3,
253};
254static const void *io_write16[0x880/2] = {
255 [IOADR16(0x1040)] = io_write_sio16,
256 [IOADR16(0x1044)] = sioWriteStat16,
257 [IOADR16(0x1048)] = sioWriteMode16,
258 [IOADR16(0x104a)] = sioWriteCtrl16,
259 [IOADR16(0x104e)] = sioWriteBaud16,
260 [IOADR16(0x1070)] = io_write_ireg16,
261 [IOADR16(0x1074)] = io_write_imask16,
262 [IOADR16(0x1100)] = io_rcnt_write_count0,
263 [IOADR16(0x1104)] = io_rcnt_write_mode0,
264 [IOADR16(0x1108)] = io_rcnt_write_target0,
265 [IOADR16(0x1110)] = io_rcnt_write_count1,
266 [IOADR16(0x1114)] = io_rcnt_write_mode1,
267 [IOADR16(0x1118)] = io_rcnt_write_target1,
268 [IOADR16(0x1120)] = io_rcnt_write_count2,
269 [IOADR16(0x1124)] = io_rcnt_write_mode2,
270 [IOADR16(0x1128)] = io_rcnt_write_target2,
271};
272static const void *io_write32[0x880/4] = {
273 [IOADR32(0x1040)] = io_write_sio32,
274 [IOADR32(0x1070)] = io_write_ireg32,
275 [IOADR32(0x1074)] = io_write_imask32,
276 [IOADR32(0x1088)] = io_write_chcr0,
277 [IOADR32(0x1098)] = io_write_chcr1,
278 [IOADR32(0x10a8)] = io_write_chcr2,
279 [IOADR32(0x10b8)] = io_write_chcr3,
280 [IOADR32(0x10c8)] = io_write_chcr4,
281 [IOADR32(0x10e8)] = io_write_chcr6,
282 [IOADR32(0x10f4)] = io_write_dma_icr32,
283 [IOADR32(0x1100)] = io_rcnt_write_count0,
284 [IOADR32(0x1104)] = io_rcnt_write_mode0,
285 [IOADR32(0x1108)] = io_rcnt_write_target0,
286 [IOADR32(0x1110)] = io_rcnt_write_count1,
287 [IOADR32(0x1114)] = io_rcnt_write_mode1,
288 [IOADR32(0x1118)] = io_rcnt_write_target1,
289 [IOADR32(0x1120)] = io_rcnt_write_count2,
290 [IOADR32(0x1124)] = io_rcnt_write_mode2,
291 [IOADR32(0x1128)] = io_rcnt_write_target2,
292// [IOADR32(0x1810)] = GPU_writeData,
293// [IOADR32(0x1814)] = GPU_writeStatus,
294 [IOADR32(0x1820)] = mdecWrite0,
295 [IOADR32(0x1824)] = mdecWrite1,
296};
297
298// this has to be in .bss to link into dynarec_local
299struct {
300 void *tab_read8;
301 void *tab_read16;
302 void *tab_read32;
303 void *tab_write8;
304 void *tab_write16;
305 void *tab_write32;
306 void *spu_readf;
307 void *spu_writef;
308} nd_pcsx_io;
309
310void new_dyna_pcsx_mem_init(void)
311{
312 int i;
313
314 // default/unmapped handlers
315 for (i = 0; i < 0x10000; i++) {
316 readmemb[i] = read_mem8;
317 readmemh[i] = read_mem16;
318 readmem[i] = read_mem32;
319 writememb[i] = write_mem8;
320 writememh[i] = write_mem16;
321 writemem[i] = write_mem32;
322#if 1
323 readmemb[i] = readmemh[i] = readmem[i] = read_mem_dummy;
a06c1d6e 324 writememb[i] = writememh[i] = writemem[i] = write_mem_dummy;
7e605697 325#endif
326 }
327
328#if 1
329 // RAM mirrors
330 for (i = 0; i < 0x80; i++) {
331 readmemb[i] = readmemb[0x8000|i] = readmemb[0xa000|i] = ari_read_ram_mirror8;
332 readmemh[i] = readmemh[0x8000|i] = readmemh[0xa000|i] = ari_read_ram_mirror16;
333 readmem[i] = readmem [0x8000|i] = readmem [0xa000|i] = ari_read_ram_mirror32;
334 writememb[i] = writememb[0x8000|i] = writememb[0xa000|i] = ari_write_ram_mirror8;
335 writememh[i] = writememh[0x8000|i] = writememh[0xa000|i] = ari_write_ram_mirror16;
336 writemem[i] = writemem [0x8000|i] = writemem [0xa000|i] = ari_write_ram_mirror32;
337 }
338
7a481d40 339 // stupid BIOS RAM check
274c4243 340 writemem[0] = ari_write_ram_mirror_ro32;
341 pcsx_ram_is_ro = 0;
7a481d40 342
7e605697 343 // RAM direct
344 for (i = 0x8000; i < 0x8020; i++) {
345 readmemb[i] = ari_read_ram8;
346 readmemh[i] = ari_read_ram16;
347 readmem[i] = ari_read_ram32;
7e605697 348 }
349
a06c1d6e 350 // BIOS and it's mirrors
351 for (i = 0x1fc0; i < 0x1fc8; i++) {
352 readmemb[i] = readmemb[0x8000|i] = readmemb[0xa000|i] = ari_read_bios8;
353 readmemh[i] = readmemh[0x8000|i] = readmemh[0xa000|i] = ari_read_bios16;
354 readmem[i] = readmem[0x8000|i] = readmem[0xa000|i] = ari_read_bios32;
355 }
356
7e605697 357 // I/O
358 readmemb[0x1f80] = ari_read_io8;
359 readmemh[0x1f80] = ari_read_io16;
360 readmem[0x1f80] = ari_read_io32;
361 writememb[0x1f80] = ari_write_io8;
362 writememh[0x1f80] = ari_write_io16;
363 writemem[0x1f80] = ari_write_io32;
364
7a481d40 365 writemem[0xfffe] = write_biu;
7e605697 366#endif
367
368 // fill IO tables
369 nd_pcsx_io.tab_read8 = io_read8;
370 nd_pcsx_io.tab_read16 = io_read16;
371 nd_pcsx_io.tab_read32 = io_read32;
372 nd_pcsx_io.tab_write8 = io_write8;
373 nd_pcsx_io.tab_write16 = io_write16;
374 nd_pcsx_io.tab_write32 = io_write32;
375}
376
377void new_dyna_pcsx_mem_reset(void)
378{
379 // plugins might change so update the pointers
380 nd_pcsx_io.spu_readf = SPU_readRegister;
381 nd_pcsx_io.spu_writef = SPU_writeRegister;
382
383 io_read32[IOADR32(0x1810)] = GPU_readData;
384 io_read32[IOADR32(0x1814)] = GPU_readStatus;
385 io_write32[IOADR32(0x1810)] = GPU_writeData;
386 io_write32[IOADR32(0x1814)] = GPU_writeStatus;
387}
388