Commit | Line | Data |
---|---|---|
1ab64c54 | 1 | /* |
05740673 | 2 | * (C) GraÅžvydas "notaz" Ignotas, 2011-2012 |
1ab64c54 GI |
3 | * |
4 | * This work is licensed under the terms of any of these licenses | |
5 | * (at your option): | |
6 | * - GNU GPL, version 2 or later. | |
7 | * - GNU LGPL, version 2.1 or later. | |
8 | * See the COPYING file in the top-level directory. | |
9 | */ | |
10 | ||
d30279e2 | 11 | #include <stdio.h> |
1ab64c54 | 12 | #include <string.h> |
56f08d83 | 13 | #include "gpu.h" |
1ab64c54 GI |
14 | |
15 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) | |
d30279e2 | 16 | #define unlikely(x) __builtin_expect((x), 0) |
8dd855cd | 17 | #define noinline __attribute__((noinline)) |
1ab64c54 | 18 | |
deb18d24 | 19 | #define gpu_log(fmt, ...) \ |
3ece2f0c | 20 | printf("%d:%03d: " fmt, *gpu.state.frame_count, *gpu.state.hcnt, ##__VA_ARGS__) |
deb18d24 | 21 | |
22 | //#define log_io gpu_log | |
56f08d83 | 23 | #define log_io(...) |
9394ada5 | 24 | //#define log_anomaly gpu_log |
25 | #define log_anomaly(...) | |
56f08d83 | 26 | |
7d993ee2 | 27 | struct psx_gpu gpu __attribute__((aligned(2048))); |
1ab64c54 | 28 | |
48f3d210 | 29 | static noinline int do_cmd_buffer(uint32_t *data, int count); |
05740673 | 30 | static void finish_vram_transfer(int is_read); |
48f3d210 | 31 | |
32 | static noinline void do_cmd_reset(void) | |
33 | { | |
34 | if (unlikely(gpu.cmd_len > 0)) | |
35 | do_cmd_buffer(gpu.cmd_buffer, gpu.cmd_len); | |
48f3d210 | 36 | gpu.cmd_len = 0; |
05740673 | 37 | |
38 | if (unlikely(gpu.dma.h > 0)) | |
39 | finish_vram_transfer(gpu.dma_start.is_read); | |
48f3d210 | 40 | gpu.dma.h = 0; |
41 | } | |
42 | ||
6e9bdaef | 43 | static noinline void do_reset(void) |
1ab64c54 | 44 | { |
7841712d | 45 | unsigned int i; |
48f3d210 | 46 | |
47 | do_cmd_reset(); | |
48 | ||
6e9bdaef | 49 | memset(gpu.regs, 0, sizeof(gpu.regs)); |
48f3d210 | 50 | for (i = 0; i < sizeof(gpu.ex_regs) / sizeof(gpu.ex_regs[0]); i++) |
51 | gpu.ex_regs[i] = (0xe0 + i) << 24; | |
d30279e2 | 52 | gpu.status.reg = 0x14802000; |
6e9bdaef | 53 | gpu.gp0 = 0; |
fc84f618 | 54 | gpu.regs[3] = 1; |
6e9bdaef | 55 | gpu.screen.hres = gpu.screen.w = 256; |
fc84f618 | 56 | gpu.screen.vres = gpu.screen.h = 240; |
1ab64c54 GI |
57 | } |
58 | ||
8dd855cd | 59 | static noinline void update_width(void) |
60 | { | |
61 | int sw = gpu.screen.x2 - gpu.screen.x1; | |
62 | if (sw <= 0 || sw >= 2560) | |
63 | // full width | |
64 | gpu.screen.w = gpu.screen.hres; | |
65 | else | |
66 | gpu.screen.w = sw * gpu.screen.hres / 2560; | |
67 | } | |
68 | ||
69 | static noinline void update_height(void) | |
70 | { | |
71 | int sh = gpu.screen.y2 - gpu.screen.y1; | |
72 | if (gpu.status.dheight) | |
73 | sh *= 2; | |
74 | if (sh <= 0) | |
75 | sh = gpu.screen.vres; | |
76 | ||
77 | gpu.screen.h = sh; | |
78 | } | |
79 | ||
fc84f618 | 80 | static noinline void decide_frameskip(void) |
81 | { | |
9fe27e25 | 82 | if (gpu.frameskip.active) |
83 | gpu.frameskip.cnt++; | |
84 | else { | |
85 | gpu.frameskip.cnt = 0; | |
86 | gpu.frameskip.frame_ready = 1; | |
87 | } | |
fc84f618 | 88 | |
9fe27e25 | 89 | if (!gpu.frameskip.active && *gpu.frameskip.advice) |
90 | gpu.frameskip.active = 1; | |
91 | else if (gpu.frameskip.set > 0 && gpu.frameskip.cnt < gpu.frameskip.set) | |
fc84f618 | 92 | gpu.frameskip.active = 1; |
93 | else | |
94 | gpu.frameskip.active = 0; | |
fbb4bfff | 95 | |
96 | if (!gpu.frameskip.active && gpu.frameskip.pending_fill[0] != 0) { | |
97 | int dummy; | |
98 | do_cmd_list(gpu.frameskip.pending_fill, 3, &dummy); | |
99 | gpu.frameskip.pending_fill[0] = 0; | |
100 | } | |
fc84f618 | 101 | } |
102 | ||
b243416b | 103 | static noinline int decide_frameskip_allow(uint32_t cmd_e3) |
9fe27e25 | 104 | { |
105 | // no frameskip if it decides to draw to display area, | |
106 | // but not for interlace since it'll most likely always do that | |
107 | uint32_t x = cmd_e3 & 0x3ff; | |
108 | uint32_t y = (cmd_e3 >> 10) & 0x3ff; | |
109 | gpu.frameskip.allow = gpu.status.interlace || | |
110 | (uint32_t)(x - gpu.screen.x) >= (uint32_t)gpu.screen.w || | |
111 | (uint32_t)(y - gpu.screen.y) >= (uint32_t)gpu.screen.h; | |
b243416b | 112 | return gpu.frameskip.allow; |
9fe27e25 | 113 | } |
114 | ||
6e9bdaef | 115 | static noinline void get_gpu_info(uint32_t data) |
116 | { | |
117 | switch (data & 0x0f) { | |
118 | case 0x02: | |
119 | case 0x03: | |
120 | case 0x04: | |
121 | case 0x05: | |
122 | gpu.gp0 = gpu.ex_regs[data & 7] & 0xfffff; | |
123 | break; | |
124 | case 0x06: | |
125 | gpu.gp0 = gpu.ex_regs[5] & 0xfffff; | |
126 | break; | |
127 | case 0x07: | |
128 | gpu.gp0 = 2; | |
129 | break; | |
130 | default: | |
131 | gpu.gp0 = 0; | |
132 | break; | |
133 | } | |
134 | } | |
135 | ||
136 | long GPUinit(void) | |
137 | { | |
9394ada5 | 138 | int ret; |
139 | ret = vout_init(); | |
140 | ret |= renderer_init(); | |
141 | ||
3ece2f0c | 142 | gpu.state.frame_count = &gpu.zero; |
deb18d24 | 143 | gpu.state.hcnt = &gpu.zero; |
48f3d210 | 144 | gpu.frameskip.active = 0; |
145 | gpu.cmd_len = 0; | |
9394ada5 | 146 | do_reset(); |
48f3d210 | 147 | |
6e9bdaef | 148 | return ret; |
149 | } | |
150 | ||
151 | long GPUshutdown(void) | |
152 | { | |
153 | return vout_finish(); | |
154 | } | |
155 | ||
1ab64c54 GI |
156 | void GPUwriteStatus(uint32_t data) |
157 | { | |
158 | static const short hres[8] = { 256, 368, 320, 384, 512, 512, 640, 640 }; | |
159 | static const short vres[4] = { 240, 480, 256, 480 }; | |
160 | uint32_t cmd = data >> 24; | |
161 | ||
fc84f618 | 162 | if (cmd < ARRAY_SIZE(gpu.regs)) { |
48f3d210 | 163 | if (cmd > 1 && cmd != 5 && gpu.regs[cmd] == data) |
fc84f618 | 164 | return; |
8dd855cd | 165 | gpu.regs[cmd] = data; |
fc84f618 | 166 | } |
167 | ||
168 | gpu.state.fb_dirty = 1; | |
8dd855cd | 169 | |
170 | switch (cmd) { | |
1ab64c54 | 171 | case 0x00: |
6e9bdaef | 172 | do_reset(); |
1ab64c54 | 173 | break; |
48f3d210 | 174 | case 0x01: |
175 | do_cmd_reset(); | |
176 | break; | |
1ab64c54 | 177 | case 0x03: |
d30279e2 | 178 | gpu.status.blanking = data & 1; |
1ab64c54 GI |
179 | break; |
180 | case 0x04: | |
181 | gpu.status.dma = data & 3; | |
182 | break; | |
183 | case 0x05: | |
184 | gpu.screen.x = data & 0x3ff; | |
185 | gpu.screen.y = (data >> 10) & 0x3ff; | |
9fe27e25 | 186 | if (gpu.frameskip.set) { |
187 | decide_frameskip_allow(gpu.ex_regs[3]); | |
188 | if (gpu.frameskip.last_flip_frame != *gpu.state.frame_count) { | |
189 | decide_frameskip(); | |
190 | gpu.frameskip.last_flip_frame = *gpu.state.frame_count; | |
191 | } | |
fb4c6fba | 192 | } |
1ab64c54 | 193 | break; |
8dd855cd | 194 | case 0x06: |
195 | gpu.screen.x1 = data & 0xfff; | |
196 | gpu.screen.x2 = (data >> 12) & 0xfff; | |
197 | update_width(); | |
198 | break; | |
1ab64c54 GI |
199 | case 0x07: |
200 | gpu.screen.y1 = data & 0x3ff; | |
201 | gpu.screen.y2 = (data >> 10) & 0x3ff; | |
8dd855cd | 202 | update_height(); |
1ab64c54 GI |
203 | break; |
204 | case 0x08: | |
205 | gpu.status.reg = (gpu.status.reg & ~0x7f0000) | ((data & 0x3F) << 17) | ((data & 0x40) << 10); | |
8dd855cd | 206 | gpu.screen.hres = hres[(gpu.status.reg >> 16) & 7]; |
207 | gpu.screen.vres = vres[(gpu.status.reg >> 19) & 3]; | |
208 | update_width(); | |
209 | update_height(); | |
1ab64c54 | 210 | break; |
deb18d24 | 211 | default: |
212 | if ((cmd & 0xf0) == 0x10) | |
213 | get_gpu_info(data); | |
6e9bdaef | 214 | break; |
1ab64c54 | 215 | } |
7890a708 | 216 | |
217 | #ifdef GPUwriteStatus_ext | |
218 | GPUwriteStatus_ext(data); | |
219 | #endif | |
1ab64c54 GI |
220 | } |
221 | ||
56f08d83 | 222 | const unsigned char cmd_lengths[256] = |
1ab64c54 | 223 | { |
d30279e2 GI |
224 | 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
225 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
226 | 3, 3, 3, 3, 6, 6, 6, 6, 4, 4, 4, 4, 8, 8, 8, 8, // 20 | |
227 | 5, 5, 5, 5, 8, 8, 8, 8, 7, 7, 7, 7, 11, 11, 11, 11, | |
652c6b8b | 228 | 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, // 40 |
229 | 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, | |
230 | 2, 2, 2, 2, 3, 3, 3, 3, 1, 1, 1, 1, 0, 0, 0, 0, // 60 | |
d30279e2 GI |
231 | 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, |
232 | 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 80 | |
233 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
234 | 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // a0 | |
235 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
236 | 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // c0 | |
237 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
238 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // e0 | |
239 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 | |
240 | }; | |
241 | ||
d30279e2 GI |
242 | #define VRAM_MEM_XY(x, y) &gpu.vram[(y) * 1024 + (x)] |
243 | ||
244 | static inline void do_vram_line(int x, int y, uint16_t *mem, int l, int is_read) | |
1ab64c54 | 245 | { |
d30279e2 GI |
246 | uint16_t *vram = VRAM_MEM_XY(x, y); |
247 | if (is_read) | |
248 | memcpy(mem, vram, l * 2); | |
249 | else | |
250 | memcpy(vram, mem, l * 2); | |
251 | } | |
252 | ||
253 | static int do_vram_io(uint32_t *data, int count, int is_read) | |
254 | { | |
255 | int count_initial = count; | |
256 | uint16_t *sdata = (uint16_t *)data; | |
257 | int x = gpu.dma.x, y = gpu.dma.y; | |
258 | int w = gpu.dma.w, h = gpu.dma.h; | |
ddd56f6e | 259 | int o = gpu.dma.offset; |
d30279e2 GI |
260 | int l; |
261 | count *= 2; // operate in 16bpp pixels | |
262 | ||
263 | if (gpu.dma.offset) { | |
264 | l = w - gpu.dma.offset; | |
ddd56f6e | 265 | if (count < l) |
d30279e2 | 266 | l = count; |
ddd56f6e | 267 | |
268 | do_vram_line(x + o, y, sdata, l, is_read); | |
269 | ||
270 | if (o + l < w) | |
271 | o += l; | |
272 | else { | |
273 | o = 0; | |
274 | y++; | |
275 | h--; | |
276 | } | |
d30279e2 GI |
277 | sdata += l; |
278 | count -= l; | |
d30279e2 GI |
279 | } |
280 | ||
281 | for (; h > 0 && count >= w; sdata += w, count -= w, y++, h--) { | |
282 | y &= 511; | |
283 | do_vram_line(x, y, sdata, w, is_read); | |
284 | } | |
285 | ||
05740673 | 286 | if (h > 0) { |
287 | if (count > 0) { | |
288 | y &= 511; | |
289 | do_vram_line(x, y, sdata, count, is_read); | |
290 | o = count; | |
291 | count = 0; | |
292 | } | |
d30279e2 | 293 | } |
05740673 | 294 | else |
295 | finish_vram_transfer(is_read); | |
d30279e2 GI |
296 | gpu.dma.y = y; |
297 | gpu.dma.h = h; | |
ddd56f6e | 298 | gpu.dma.offset = o; |
d30279e2 | 299 | |
6e9bdaef | 300 | return count_initial - count / 2; |
d30279e2 GI |
301 | } |
302 | ||
303 | static void start_vram_transfer(uint32_t pos_word, uint32_t size_word, int is_read) | |
304 | { | |
ddd56f6e | 305 | if (gpu.dma.h) |
306 | log_anomaly("start_vram_transfer while old unfinished\n"); | |
307 | ||
5440b88e | 308 | gpu.dma.x = pos_word & 0x3ff; |
309 | gpu.dma.y = (pos_word >> 16) & 0x1ff; | |
48f3d210 | 310 | gpu.dma.w = ((size_word - 1) & 0x3ff) + 1; |
311 | gpu.dma.h = (((size_word >> 16) - 1) & 0x1ff) + 1; | |
d30279e2 | 312 | gpu.dma.offset = 0; |
05740673 | 313 | gpu.dma.is_read = is_read; |
314 | gpu.dma_start = gpu.dma; | |
d30279e2 | 315 | |
9e146206 | 316 | renderer_flush_queues(); |
317 | if (is_read) { | |
d30279e2 | 318 | gpu.status.img = 1; |
9e146206 | 319 | // XXX: wrong for width 1 |
320 | memcpy(&gpu.gp0, VRAM_MEM_XY(gpu.dma.x, gpu.dma.y), 4); | |
5440b88e | 321 | gpu.state.last_vram_read_frame = *gpu.state.frame_count; |
9e146206 | 322 | } |
d30279e2 | 323 | |
6e9bdaef | 324 | log_io("start_vram_transfer %c (%d, %d) %dx%d\n", is_read ? 'r' : 'w', |
325 | gpu.dma.x, gpu.dma.y, gpu.dma.w, gpu.dma.h); | |
d30279e2 GI |
326 | } |
327 | ||
05740673 | 328 | static void finish_vram_transfer(int is_read) |
329 | { | |
330 | if (is_read) | |
331 | gpu.status.img = 0; | |
332 | else | |
333 | renderer_update_caches(gpu.dma_start.x, gpu.dma_start.y, | |
334 | gpu.dma_start.w, gpu.dma_start.h); | |
335 | } | |
336 | ||
b243416b | 337 | static noinline int do_cmd_list_skip(uint32_t *data, int count, int *last_cmd) |
338 | { | |
339 | int cmd = 0, pos = 0, len, dummy; | |
340 | int skip = 1; | |
341 | ||
fbb4bfff | 342 | gpu.frameskip.pending_fill[0] = 0; |
343 | ||
b8d961ef | 344 | // XXX: polylines are not properly handled |
b243416b | 345 | while (pos < count && skip) { |
346 | uint32_t *list = data + pos; | |
347 | cmd = list[0] >> 24; | |
348 | len = 1 + cmd_lengths[cmd]; | |
349 | ||
350 | if (cmd == 0x02) { | |
351 | if ((list[2] & 0x3ff) > gpu.screen.w || ((list[2] >> 16) & 0x1ff) > gpu.screen.h) | |
352 | // clearing something large, don't skip | |
fbb4bfff | 353 | do_cmd_list(list, 3, &dummy); |
354 | else | |
355 | memcpy(gpu.frameskip.pending_fill, list, 3 * 4); | |
b243416b | 356 | } |
357 | else if ((cmd & 0xf4) == 0x24) { | |
358 | // flat textured prim | |
359 | gpu.ex_regs[1] &= ~0x1ff; | |
360 | gpu.ex_regs[1] |= list[4] & 0x1ff; | |
361 | } | |
362 | else if ((cmd & 0xf4) == 0x34) { | |
363 | // shaded textured prim | |
364 | gpu.ex_regs[1] &= ~0x1ff; | |
365 | gpu.ex_regs[1] |= list[5] & 0x1ff; | |
366 | } | |
367 | else if (cmd == 0xe3) | |
368 | skip = decide_frameskip_allow(list[0]); | |
369 | ||
370 | if ((cmd & 0xf8) == 0xe0) | |
371 | gpu.ex_regs[cmd & 7] = list[0]; | |
372 | ||
373 | if (pos + len > count) { | |
374 | cmd = -1; | |
375 | break; // incomplete cmd | |
376 | } | |
377 | if (cmd == 0xa0 || cmd == 0xc0) | |
378 | break; // image i/o | |
379 | pos += len; | |
380 | } | |
381 | ||
382 | renderer_sync_ecmds(gpu.ex_regs); | |
383 | *last_cmd = cmd; | |
384 | return pos; | |
385 | } | |
386 | ||
48f3d210 | 387 | static noinline int do_cmd_buffer(uint32_t *data, int count) |
d30279e2 | 388 | { |
b243416b | 389 | int cmd, pos; |
390 | uint32_t old_e3 = gpu.ex_regs[3]; | |
fc84f618 | 391 | int vram_dirty = 0; |
d30279e2 | 392 | |
d30279e2 | 393 | // process buffer |
b243416b | 394 | for (pos = 0; pos < count; ) |
d30279e2 | 395 | { |
b243416b | 396 | if (gpu.dma.h && !gpu.dma_start.is_read) { // XXX: need to verify |
397 | vram_dirty = 1; | |
d30279e2 | 398 | pos += do_vram_io(data + pos, count - pos, 0); |
ddd56f6e | 399 | if (pos == count) |
400 | break; | |
d30279e2 GI |
401 | } |
402 | ||
b243416b | 403 | cmd = data[pos] >> 24; |
d30279e2 GI |
404 | if (cmd == 0xa0 || cmd == 0xc0) { |
405 | // consume vram write/read cmd | |
406 | start_vram_transfer(data[pos + 1], data[pos + 2], cmd == 0xc0); | |
b243416b | 407 | pos += 3; |
408 | continue; | |
d30279e2 | 409 | } |
b243416b | 410 | |
1e07f71d | 411 | // 0xex cmds might affect frameskip.allow, so pass to do_cmd_list_skip |
412 | if (gpu.frameskip.active && (gpu.frameskip.allow || ((data[pos] >> 24) & 0xf0) == 0xe0)) | |
b243416b | 413 | pos += do_cmd_list_skip(data + pos, count - pos, &cmd); |
414 | else { | |
415 | pos += do_cmd_list(data + pos, count - pos, &cmd); | |
416 | vram_dirty = 1; | |
417 | } | |
418 | ||
419 | if (cmd == -1) | |
420 | // incomplete cmd | |
ddd56f6e | 421 | break; |
d30279e2 | 422 | } |
ddd56f6e | 423 | |
a3a9f519 | 424 | gpu.status.reg &= ~0x1fff; |
425 | gpu.status.reg |= gpu.ex_regs[1] & 0x7ff; | |
426 | gpu.status.reg |= (gpu.ex_regs[6] & 3) << 11; | |
427 | ||
fc84f618 | 428 | gpu.state.fb_dirty |= vram_dirty; |
429 | ||
b243416b | 430 | if (old_e3 != gpu.ex_regs[3]) |
431 | decide_frameskip_allow(gpu.ex_regs[3]); | |
432 | ||
ddd56f6e | 433 | return count - pos; |
d30279e2 GI |
434 | } |
435 | ||
5440b88e | 436 | static void flush_cmd_buffer(void) |
d30279e2 | 437 | { |
48f3d210 | 438 | int left = do_cmd_buffer(gpu.cmd_buffer, gpu.cmd_len); |
d30279e2 GI |
439 | if (left > 0) |
440 | memmove(gpu.cmd_buffer, gpu.cmd_buffer + gpu.cmd_len - left, left * 4); | |
441 | gpu.cmd_len = left; | |
1ab64c54 GI |
442 | } |
443 | ||
444 | void GPUwriteDataMem(uint32_t *mem, int count) | |
445 | { | |
d30279e2 GI |
446 | int left; |
447 | ||
56f08d83 | 448 | log_io("gpu_dma_write %p %d\n", mem, count); |
449 | ||
d30279e2 GI |
450 | if (unlikely(gpu.cmd_len > 0)) |
451 | flush_cmd_buffer(); | |
56f08d83 | 452 | |
48f3d210 | 453 | left = do_cmd_buffer(mem, count); |
d30279e2 | 454 | if (left) |
56f08d83 | 455 | log_anomaly("GPUwriteDataMem: discarded %d/%d words\n", left, count); |
1ab64c54 GI |
456 | } |
457 | ||
d30279e2 | 458 | void GPUwriteData(uint32_t data) |
1ab64c54 | 459 | { |
56f08d83 | 460 | log_io("gpu_write %08x\n", data); |
d30279e2 GI |
461 | gpu.cmd_buffer[gpu.cmd_len++] = data; |
462 | if (gpu.cmd_len >= CMD_BUFFER_LEN) | |
463 | flush_cmd_buffer(); | |
1ab64c54 GI |
464 | } |
465 | ||
ddd56f6e | 466 | long GPUdmaChain(uint32_t *rambase, uint32_t start_addr) |
1ab64c54 | 467 | { |
ddd56f6e | 468 | uint32_t addr, *list; |
deb18d24 | 469 | uint32_t *llist_entry = NULL; |
ddd56f6e | 470 | int len, left, count; |
1c72b1c2 | 471 | long cpu_cycles = 0; |
d30279e2 GI |
472 | |
473 | if (unlikely(gpu.cmd_len > 0)) | |
474 | flush_cmd_buffer(); | |
475 | ||
deb18d24 | 476 | // ff7 sends it's main list twice, detect this |
3ece2f0c | 477 | if (*gpu.state.frame_count == gpu.state.last_list.frame && |
478 | *gpu.state.hcnt - gpu.state.last_list.hcnt <= 1 && | |
1c72b1c2 | 479 | gpu.state.last_list.cycles > 2048) |
deb18d24 | 480 | { |
481 | llist_entry = rambase + (gpu.state.last_list.addr & 0x1fffff) / 4; | |
482 | *llist_entry |= 0x800000; | |
483 | } | |
484 | ||
56f08d83 | 485 | log_io("gpu_dma_chain\n"); |
ddd56f6e | 486 | addr = start_addr & 0xffffff; |
487 | for (count = 0; addr != 0xffffff; count++) | |
488 | { | |
ddd56f6e | 489 | list = rambase + (addr & 0x1fffff) / 4; |
d30279e2 GI |
490 | len = list[0] >> 24; |
491 | addr = list[0] & 0xffffff; | |
1c72b1c2 | 492 | cpu_cycles += 10; |
493 | if (len > 0) | |
494 | cpu_cycles += 5 + len; | |
deb18d24 | 495 | |
496 | log_io(".chain %08x #%d\n", (list - rambase) * 4, len); | |
ddd56f6e | 497 | |
498 | // loop detection marker | |
499 | // (bit23 set causes DMA error on real machine, so | |
500 | // unlikely to be ever set by the game) | |
501 | list[0] |= 0x800000; | |
502 | ||
56f08d83 | 503 | if (len) { |
48f3d210 | 504 | left = do_cmd_buffer(list + 1, len); |
56f08d83 | 505 | if (left) |
deb18d24 | 506 | log_anomaly("GPUdmaChain: discarded %d/%d words\n", left, len); |
56f08d83 | 507 | } |
ddd56f6e | 508 | |
509 | if (addr & 0x800000) | |
510 | break; | |
511 | } | |
512 | ||
513 | // remove loop detection markers | |
514 | addr = start_addr & 0x1fffff; | |
515 | while (count-- > 0) { | |
516 | list = rambase + addr / 4; | |
517 | addr = list[0] & 0x1fffff; | |
518 | list[0] &= ~0x800000; | |
d30279e2 | 519 | } |
deb18d24 | 520 | if (llist_entry) |
521 | *llist_entry &= ~0x800000; | |
d30279e2 | 522 | |
3ece2f0c | 523 | gpu.state.last_list.frame = *gpu.state.frame_count; |
deb18d24 | 524 | gpu.state.last_list.hcnt = *gpu.state.hcnt; |
1c72b1c2 | 525 | gpu.state.last_list.cycles = cpu_cycles; |
deb18d24 | 526 | gpu.state.last_list.addr = start_addr; |
527 | ||
1c72b1c2 | 528 | return cpu_cycles; |
1ab64c54 GI |
529 | } |
530 | ||
d30279e2 GI |
531 | void GPUreadDataMem(uint32_t *mem, int count) |
532 | { | |
56f08d83 | 533 | log_io("gpu_dma_read %p %d\n", mem, count); |
534 | ||
d30279e2 GI |
535 | if (unlikely(gpu.cmd_len > 0)) |
536 | flush_cmd_buffer(); | |
56f08d83 | 537 | |
d30279e2 GI |
538 | if (gpu.dma.h) |
539 | do_vram_io(mem, count, 1); | |
540 | } | |
541 | ||
542 | uint32_t GPUreadData(void) | |
543 | { | |
9e146206 | 544 | uint32_t ret; |
56f08d83 | 545 | |
546 | if (unlikely(gpu.cmd_len > 0)) | |
547 | flush_cmd_buffer(); | |
548 | ||
9e146206 | 549 | ret = gpu.gp0; |
56f08d83 | 550 | if (gpu.dma.h) |
9e146206 | 551 | do_vram_io(&ret, 1, 1); |
56f08d83 | 552 | |
9e146206 | 553 | log_io("gpu_read %08x\n", ret); |
554 | return ret; | |
d30279e2 GI |
555 | } |
556 | ||
557 | uint32_t GPUreadStatus(void) | |
558 | { | |
ddd56f6e | 559 | uint32_t ret; |
56f08d83 | 560 | |
d30279e2 GI |
561 | if (unlikely(gpu.cmd_len > 0)) |
562 | flush_cmd_buffer(); | |
563 | ||
24de2dd4 | 564 | ret = gpu.status.reg; |
ddd56f6e | 565 | log_io("gpu_read_status %08x\n", ret); |
566 | return ret; | |
d30279e2 GI |
567 | } |
568 | ||
096ec49b | 569 | struct GPUFreeze |
1ab64c54 GI |
570 | { |
571 | uint32_t ulFreezeVersion; // should be always 1 for now (set by main emu) | |
572 | uint32_t ulStatus; // current gpu status | |
573 | uint32_t ulControl[256]; // latest control register values | |
574 | unsigned char psxVRam[1024*1024*2]; // current VRam image (full 2 MB for ZN) | |
096ec49b | 575 | }; |
1ab64c54 | 576 | |
096ec49b | 577 | long GPUfreeze(uint32_t type, struct GPUFreeze *freeze) |
1ab64c54 | 578 | { |
fc84f618 | 579 | int i; |
580 | ||
1ab64c54 GI |
581 | switch (type) { |
582 | case 1: // save | |
d30279e2 GI |
583 | if (gpu.cmd_len > 0) |
584 | flush_cmd_buffer(); | |
1ab64c54 GI |
585 | memcpy(freeze->psxVRam, gpu.vram, sizeof(gpu.vram)); |
586 | memcpy(freeze->ulControl, gpu.regs, sizeof(gpu.regs)); | |
6e9bdaef | 587 | memcpy(freeze->ulControl + 0xe0, gpu.ex_regs, sizeof(gpu.ex_regs)); |
1ab64c54 | 588 | freeze->ulStatus = gpu.status.reg; |
1ab64c54 GI |
589 | break; |
590 | case 0: // load | |
591 | memcpy(gpu.vram, freeze->psxVRam, sizeof(gpu.vram)); | |
592 | memcpy(gpu.regs, freeze->ulControl, sizeof(gpu.regs)); | |
6e9bdaef | 593 | memcpy(gpu.ex_regs, freeze->ulControl + 0xe0, sizeof(gpu.ex_regs)); |
1ab64c54 | 594 | gpu.status.reg = freeze->ulStatus; |
3d47ef17 | 595 | gpu.cmd_len = 0; |
fc84f618 | 596 | for (i = 8; i > 0; i--) { |
597 | gpu.regs[i] ^= 1; // avoid reg change detection | |
598 | GPUwriteStatus((i << 24) | (gpu.regs[i] ^ 1)); | |
599 | } | |
5b745e5b | 600 | renderer_sync_ecmds(gpu.ex_regs); |
05740673 | 601 | renderer_update_caches(0, 0, 1024, 512); |
1ab64c54 GI |
602 | break; |
603 | } | |
604 | ||
605 | return 1; | |
606 | } | |
607 | ||
5440b88e | 608 | void GPUupdateLace(void) |
609 | { | |
610 | if (gpu.cmd_len > 0) | |
611 | flush_cmd_buffer(); | |
612 | renderer_flush_queues(); | |
613 | ||
aafcb4dd | 614 | if (gpu.status.blanking) { |
615 | if (!gpu.state.blanked) { | |
616 | vout_blank(); | |
617 | gpu.state.blanked = 1; | |
618 | gpu.state.fb_dirty = 1; | |
619 | } | |
620 | return; | |
621 | } | |
622 | ||
623 | if (!gpu.state.fb_dirty) | |
5440b88e | 624 | return; |
625 | ||
626 | if (gpu.frameskip.set) { | |
627 | if (!gpu.frameskip.frame_ready) { | |
628 | if (*gpu.state.frame_count - gpu.frameskip.last_flip_frame < 9) | |
629 | return; | |
630 | gpu.frameskip.active = 0; | |
631 | } | |
632 | gpu.frameskip.frame_ready = 0; | |
633 | } | |
634 | ||
635 | vout_update(); | |
636 | gpu.state.fb_dirty = 0; | |
aafcb4dd | 637 | gpu.state.blanked = 0; |
5440b88e | 638 | } |
639 | ||
72e5023f | 640 | void GPUvBlank(int is_vblank, int lcf) |
641 | { | |
5440b88e | 642 | int interlace = gpu.state.allow_interlace |
643 | && gpu.status.interlace && gpu.status.dheight; | |
644 | // interlace doesn't look nice on progressive displays, | |
645 | // so we have this "auto" mode here for games that don't read vram | |
646 | if (gpu.state.allow_interlace == 2 | |
647 | && *gpu.state.frame_count - gpu.state.last_vram_read_frame > 1) | |
648 | { | |
649 | interlace = 0; | |
650 | } | |
651 | if (interlace || interlace != gpu.state.old_interlace) { | |
652 | gpu.state.old_interlace = interlace; | |
653 | ||
654 | if (gpu.cmd_len > 0) | |
655 | flush_cmd_buffer(); | |
656 | renderer_flush_queues(); | |
657 | renderer_set_interlace(interlace, !lcf); | |
658 | } | |
659 | } | |
660 | ||
661 | #include "../../frontend/plugin_lib.h" | |
662 | ||
663 | void GPUrearmedCallbacks(const struct rearmed_cbs *cbs) | |
664 | { | |
665 | gpu.frameskip.set = cbs->frameskip; | |
666 | gpu.frameskip.advice = &cbs->fskip_advice; | |
667 | gpu.frameskip.active = 0; | |
668 | gpu.frameskip.frame_ready = 1; | |
669 | gpu.state.hcnt = cbs->gpu_hcnt; | |
670 | gpu.state.frame_count = cbs->gpu_frame_count; | |
671 | gpu.state.allow_interlace = cbs->gpu_neon.allow_interlace; | |
672 | ||
673 | if (cbs->pl_vout_set_raw_vram) | |
674 | cbs->pl_vout_set_raw_vram(gpu.vram); | |
675 | renderer_set_config(cbs); | |
676 | vout_set_config(cbs); | |
72e5023f | 677 | } |
678 | ||
1ab64c54 | 679 | // vim:shiftwidth=2:expandtab |