720ee7f6 |
1 | /**\r |
2 | * All this is mostly based on rlyeh's minimal library.\r |
3 | * Copied here to review all his code and understand what's going on.\r |
4 | **/\r |
5 | \r |
6 | /*\r |
7 | \r |
8 | GP2X minimal library v0.A by rlyeh, (c) 2005. emulnation.info@rlyeh (swap it!)\r |
9 | \r |
10 | Thanks to Squidge, Robster, snaff, Reesy and NK, for the help & previous work! :-)\r |
11 | \r |
12 | License\r |
13 | =======\r |
14 | \r |
15 | Free for non-commercial projects (it would be nice receiving a mail from you).\r |
16 | Other cases, ask me first.\r |
17 | \r |
18 | GamePark Holdings is not allowed to use this library and/or use parts from it.\r |
19 | \r |
20 | */\r |
21 | \r |
22 | \r |
23 | #include <stdio.h>\r |
24 | #include <stdlib.h>\r |
6245d5a0 |
25 | #include <stdarg.h>\r |
720ee7f6 |
26 | #include <string.h>\r |
27 | #include <unistd.h>\r |
28 | #include <sys/mman.h>\r |
29 | #include <sys/types.h>\r |
30 | #include <sys/stat.h>\r |
720ee7f6 |
31 | #include <fcntl.h>\r |
32 | #include <errno.h>\r |
33 | \r |
34 | #include "gp2x.h"\r |
b3972d82 |
35 | #include "../linux/usbjoy.h"\r |
36 | #include "../linux/sndout_oss.h"\r |
c7a4ff64 |
37 | #include "../common/arm_utils.h"\r |
095a240b |
38 | #include "../common/arm_linux.h"\r |
720ee7f6 |
39 | \r |
40 | volatile unsigned short *gp2x_memregs;\r |
41 | //static\r |
42 | volatile unsigned long *gp2x_memregl;\r |
43 | static void *gp2x_screens[4];\r |
44 | static int screensel = 0;\r |
45 | //static\r |
46 | int memdev = 0;\r |
b3972d82 |
47 | static int touchdev = -1;\r |
3f2aaff2 |
48 | static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };\r |
720ee7f6 |
49 | \r |
50 | void *gp2x_screen;\r |
51 | \r |
0805b5b4 |
52 | #define FRAMEBUFF_WHOLESIZE (0x30000*4) // 320*240*2 + some more\r |
53 | #define FRAMEBUFF_ADDR0 (0x4000000-FRAMEBUFF_WHOLESIZE)\r |
54 | #define FRAMEBUFF_ADDR1 (FRAMEBUFF_ADDR0+0x30000)\r |
55 | #define FRAMEBUFF_ADDR2 (FRAMEBUFF_ADDR1+0x30000)\r |
56 | #define FRAMEBUFF_ADDR3 (FRAMEBUFF_ADDR2+0x30000)\r |
720ee7f6 |
57 | \r |
79cad122 |
58 | static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 };\r |
59 | static int gp2x_screenaddrs_use[4];\r |
4dfd9f42 |
60 | static unsigned short gp2x_screenaddr_old[4];\r |
720ee7f6 |
61 | \r |
62 | \r |
63 | /* video stuff */\r |
64 | void gp2x_video_flip(void)\r |
65 | {\r |
79cad122 |
66 | unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3];\r |
67 | unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16);\r |
720ee7f6 |
68 | \r |
0805b5b4 |
69 | gp2x_memregs[0x2910>>1] = msw;\r |
70 | gp2x_memregs[0x2914>>1] = msw;\r |
79cad122 |
71 | gp2x_memregs[0x290E>>1] = lsw;\r |
72 | gp2x_memregs[0x2912>>1] = lsw;\r |
720ee7f6 |
73 | \r |
74 | // jump to other buffer:\r |
75 | gp2x_screen = gp2x_screens[++screensel&3];\r |
76 | }\r |
77 | \r |
e5d315a5 |
78 | /* doulblebuffered flip */\r |
79 | void gp2x_video_flip2(void)\r |
80 | {\r |
79cad122 |
81 | unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16);\r |
720ee7f6 |
82 | \r |
0805b5b4 |
83 | gp2x_memregs[0x2910>>1] = msw;\r |
84 | gp2x_memregs[0x2914>>1] = msw;\r |
85 | gp2x_memregs[0x290E>>1] = 0;\r |
86 | gp2x_memregs[0x2912>>1] = 0;\r |
e5d315a5 |
87 | \r |
88 | // jump to other buffer:\r |
89 | gp2x_screen = gp2x_screens[++screensel&1];\r |
90 | }\r |
91 | \r |
92 | \r |
93 | void gp2x_video_changemode2(int bpp)\r |
720ee7f6 |
94 | {\r |
95 | gp2x_memregs[0x28DA>>1]=(((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/\r |
96 | gp2x_memregs[0x290C>>1]=320*((bpp+1)/8); /*line width in bytes*/\r |
e5d315a5 |
97 | }\r |
98 | \r |
99 | \r |
100 | void gp2x_video_changemode(int bpp)\r |
101 | {\r |
102 | gp2x_video_changemode2(bpp);\r |
720ee7f6 |
103 | \r |
0805b5b4 |
104 | gp2x_memset_all_buffers(0, 0, 320*240*2);\r |
720ee7f6 |
105 | gp2x_video_flip();\r |
106 | }\r |
107 | \r |
108 | \r |
109 | void gp2x_video_setpalette(int *pal, int len)\r |
110 | {\r |
111 | unsigned short *g=(unsigned short *)pal;\r |
112 | volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1];\r |
113 | gp2x_memregs[0x2958>>1] = 0;\r |
114 | \r |
115 | len *= 2;\r |
116 | while(len--) *memreg=*g++;\r |
117 | }\r |
118 | \r |
119 | \r |
120 | // TV Compatible function //\r |
79cad122 |
121 | void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)\r |
720ee7f6 |
122 | {\r |
123 | float escalaw, escalah;\r |
124 | int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3;\r |
79cad122 |
125 | unsigned short scalw;\r |
126 | \r |
127 | // set offset\r |
128 | gp2x_screenaddrs_use[0] = gp2x_screenaddrs[0] + ln_offs * 320 * bpp;\r |
129 | gp2x_screenaddrs_use[1] = gp2x_screenaddrs[1] + ln_offs * 320 * bpp;\r |
130 | gp2x_screenaddrs_use[2] = gp2x_screenaddrs[2] + ln_offs * 320 * bpp;\r |
131 | gp2x_screenaddrs_use[3] = gp2x_screenaddrs[3] + ln_offs * 320 * bpp;\r |
720ee7f6 |
132 | \r |
133 | escalaw = 1024.0; // RGB Horiz LCD\r |
134 | escalah = 320.0; // RGB Vert LCD\r |
135 | \r |
136 | if(gp2x_memregs[0x2800>>1]&0x100) //TV-Out\r |
137 | {\r |
138 | escalaw=489.0; // RGB Horiz TV (PAL, NTSC)\r |
139 | if (gp2x_memregs[0x2818>>1] == 287) //PAL\r |
140 | escalah=274.0; // RGB Vert TV PAL\r |
141 | else if (gp2x_memregs[0x2818>>1] == 239) //NTSC\r |
142 | escalah=331.0; // RGB Vert TV NTSC\r |
143 | }\r |
144 | \r |
145 | // scale horizontal\r |
79cad122 |
146 | scalw = (unsigned short)((float)escalaw *(W/320.0));\r |
147 | /* if there is no horizontal scaling, vertical doesn't work. Here is a nasty wrokaround... */\r |
148 | if (H != 240 && W == 320) scalw--;\r |
149 | gp2x_memregs[0x2906>>1]=scalw;\r |
720ee7f6 |
150 | // scale vertical\r |
151 | gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0));\r |
152 | }\r |
153 | \r |
154 | \r |
720ee7f6 |
155 | void gp2x_video_wait_vsync(void)\r |
156 | {\r |
59d0f042 |
157 | unsigned short v = gp2x_memregs[0x1182>>1];\r |
158 | while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10)) spend_cycles(1024);\r |
720ee7f6 |
159 | }\r |
160 | \r |
161 | \r |
13059a60 |
162 | void gp2x_video_flush_cache(void)\r |
163 | {\r |
164 | // since we are using the mmu hack, we must flush the cache first\r |
095a240b |
165 | cache_flush_d_inval_i(gp2x_screen, (char *)gp2x_screen + 320*240*2);\r |
13059a60 |
166 | }\r |
167 | \r |
168 | \r |
4ffd2858 |
169 | void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)\r |
170 | {\r |
b9f8cb3d |
171 | char *dst;\r |
172 | if (buffers & (1<<0)) { dst = (char *)gp2x_screens[0] + offset; if (dst != data) memcpy(dst, data, len); }\r |
173 | if (buffers & (1<<1)) { dst = (char *)gp2x_screens[1] + offset; if (dst != data) memcpy(dst, data, len); }\r |
174 | if (buffers & (1<<2)) { dst = (char *)gp2x_screens[2] + offset; if (dst != data) memcpy(dst, data, len); }\r |
175 | if (buffers & (1<<3)) { dst = (char *)gp2x_screens[3] + offset; if (dst != data) memcpy(dst, data, len); }\r |
4ffd2858 |
176 | }\r |
177 | \r |
178 | \r |
720ee7f6 |
179 | void gp2x_memcpy_all_buffers(void *data, int offset, int len)\r |
180 | {\r |
4ffd2858 |
181 | gp2x_memcpy_buffers(0xf, data, offset, len);\r |
720ee7f6 |
182 | }\r |
183 | \r |
184 | \r |
185 | void gp2x_memset_all_buffers(int offset, int byte, int len)\r |
186 | {\r |
187 | memset((char *)gp2x_screens[0] + offset, byte, len);\r |
188 | memset((char *)gp2x_screens[1] + offset, byte, len);\r |
189 | memset((char *)gp2x_screens[2] + offset, byte, len);\r |
190 | memset((char *)gp2x_screens[3] + offset, byte, len);\r |
191 | }\r |
192 | \r |
193 | \r |
e5d315a5 |
194 | void gp2x_pd_clone_buffer2(void)\r |
195 | {\r |
13059a60 |
196 | memcpy(gp2x_screen, gp2x_screens[2], 320*240*2);\r |
e5d315a5 |
197 | }\r |
198 | \r |
199 | \r |
720ee7f6 |
200 | unsigned long gp2x_joystick_read(int allow_usb_joy)\r |
201 | {\r |
202 | int i;\r |
838a5b02 |
203 | unsigned long value=(gp2x_memregs[0x1198>>1] & 0x00FF); // GPIO M\r |
720ee7f6 |
204 | if(value==0xFD) value=0xFA;\r |
205 | if(value==0xF7) value=0xEB;\r |
206 | if(value==0xDF) value=0xAF;\r |
207 | if(value==0x7F) value=0xBE;\r |
838a5b02 |
208 | value = ~((gp2x_memregs[0x1184>>1] & 0xFF00) | value | (gp2x_memregs[0x1186>>1] << 16)); // C D\r |
720ee7f6 |
209 | \r |
210 | if (allow_usb_joy && num_of_joys > 0) {\r |
211 | // check the usb joy as well..\r |
b3972d82 |
212 | usbjoy_update();\r |
720ee7f6 |
213 | for (i = 0; i < num_of_joys; i++)\r |
b3972d82 |
214 | value |= usbjoy_check(i);\r |
720ee7f6 |
215 | }\r |
216 | \r |
217 | return value;\r |
218 | }\r |
219 | \r |
3f2aaff2 |
220 | typedef struct ucb1x00_ts_event\r |
221 | {\r |
222 | unsigned short pressure;\r |
223 | unsigned short x;\r |
224 | unsigned short y;\r |
225 | unsigned short pad;\r |
226 | struct timeval stamp;\r |
227 | } UCB1X00_TS_EVENT;\r |
228 | \r |
229 | int gp2x_touchpad_read(int *x, int *y)\r |
230 | {\r |
231 | UCB1X00_TS_EVENT event;\r |
6589c840 |
232 | static int zero_seen = 0;\r |
3f2aaff2 |
233 | int retval;\r |
234 | \r |
235 | if (touchdev < 0) return -1;\r |
236 | \r |
237 | retval = read(touchdev, &event, sizeof(event));\r |
dfa8d77a |
238 | if (retval <= 0) {\r |
3f2aaff2 |
239 | printf("touch read failed %i %i\n", retval, errno);\r |
240 | return -1;\r |
241 | }\r |
6589c840 |
242 | // this is to ignore the messed-up 4.1.x driver\r |
dfa8d77a |
243 | if (event.pressure == 0) zero_seen = 1;\r |
3f2aaff2 |
244 | \r |
245 | if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16;\r |
246 | if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16;\r |
247 | // printf("read %i %i %i\n", event.pressure, *x, *y);\r |
248 | \r |
6589c840 |
249 | return zero_seen ? event.pressure : 0;\r |
3f2aaff2 |
250 | }\r |
251 | \r |
252 | \r |
720ee7f6 |
253 | /* 940 */\r |
254 | void Pause940(int yes)\r |
255 | {\r |
256 | if(yes)\r |
257 | gp2x_memregs[0x0904>>1] &= 0xFFFE;\r |
258 | else\r |
259 | gp2x_memregs[0x0904>>1] |= 1;\r |
260 | }\r |
261 | \r |
262 | \r |
8dfb9fd5 |
263 | void Reset940(int yes, int bank)\r |
720ee7f6 |
264 | {\r |
0805b5b4 |
265 | gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03);\r |
720ee7f6 |
266 | }\r |
267 | \r |
88bfc63d |
268 | static void proc_set(const char *path, const char *val)\r |
269 | {\r |
270 | FILE *f;\r |
271 | char tmp[16];\r |
272 | \r |
273 | f = fopen(path, "w");\r |
274 | if (f == NULL) {\r |
275 | printf("failed to open: %s\n", path);\r |
276 | return;\r |
277 | }\r |
278 | \r |
279 | fprintf(f, "0\n");\r |
280 | fclose(f);\r |
281 | \r |
282 | printf("\"%s\" is set to: ", path);\r |
283 | f = fopen(path, "r");\r |
284 | if (f == NULL) {\r |
285 | printf("(open failed)\n");\r |
286 | return;\r |
287 | }\r |
288 | \r |
289 | fgets(tmp, sizeof(tmp), f);\r |
290 | printf("%s", tmp);\r |
291 | fclose(f);\r |
292 | }\r |
720ee7f6 |
293 | \r |
294 | \r |
295 | /* common */\r |
296 | void gp2x_init(void)\r |
297 | {\r |
298 | printf("entering init()\n"); fflush(stdout);\r |
299 | \r |
300 | memdev = open("/dev/mem", O_RDWR);\r |
301 | if (memdev == -1)\r |
302 | {\r |
b3972d82 |
303 | perror("open(\"/dev/mem\")");\r |
720ee7f6 |
304 | exit(1);\r |
305 | }\r |
306 | \r |
307 | gp2x_memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);\r |
308 | printf("memregs are @ %p\n", gp2x_memregs);\r |
309 | if(gp2x_memregs == MAP_FAILED)\r |
310 | {\r |
b3972d82 |
311 | perror("mmap(memregs)");\r |
720ee7f6 |
312 | exit(1);\r |
313 | }\r |
314 | gp2x_memregl = (unsigned long *) gp2x_memregs;\r |
315 | \r |
06796143 |
316 | gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers\r |
317 | \r |
0805b5b4 |
318 | gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED, memdev, FRAMEBUFF_ADDR0);\r |
319 | if(gp2x_screens[0] == MAP_FAILED)\r |
720ee7f6 |
320 | {\r |
b3972d82 |
321 | perror("mmap(gp2x_screen)");\r |
720ee7f6 |
322 | exit(1);\r |
323 | }\r |
0805b5b4 |
324 | printf("framebuffers point to %p\n", gp2x_screens[0]);\r |
325 | gp2x_screens[1] = (char *) gp2x_screens[0]+0x30000;\r |
326 | gp2x_screens[2] = (char *) gp2x_screens[1]+0x30000;\r |
327 | gp2x_screens[3] = (char *) gp2x_screens[2]+0x30000;\r |
720ee7f6 |
328 | \r |
329 | gp2x_screen = gp2x_screens[0];\r |
330 | screensel = 0;\r |
331 | \r |
4dfd9f42 |
332 | gp2x_screenaddr_old[0] = gp2x_memregs[0x290E>>1];\r |
333 | gp2x_screenaddr_old[1] = gp2x_memregs[0x2910>>1];\r |
334 | gp2x_screenaddr_old[2] = gp2x_memregs[0x2912>>1];\r |
335 | gp2x_screenaddr_old[3] = gp2x_memregs[0x2914>>1];\r |
336 | \r |
79cad122 |
337 | memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs));\r |
0805b5b4 |
338 | gp2x_memset_all_buffers(0, 0, 320*240*2);\r |
339 | \r |
720ee7f6 |
340 | // snd\r |
b3972d82 |
341 | sndout_oss_init();\r |
720ee7f6 |
342 | \r |
343 | /* init usb joys -GnoStiC */\r |
b3972d82 |
344 | usbjoy_init();\r |
720ee7f6 |
345 | \r |
3f2aaff2 |
346 | // touchscreen\r |
347 | touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY);\r |
348 | if (touchdev >= 0) {\r |
349 | FILE *pcf = fopen("/etc/pointercal", "r");\r |
350 | if (pcf) {\r |
351 | fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1],\r |
352 | &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]);\r |
353 | fclose(pcf);\r |
354 | }\r |
355 | printf("found touchscreen/wm97xx\n");\r |
356 | }\r |
357 | \r |
88bfc63d |
358 | /* disable Linux read-ahead */\r |
359 | proc_set("/proc/sys/vm/max-readahead", "0\n");\r |
360 | proc_set("/proc/sys/vm/min-readahead", "0\n");\r |
361 | \r |
720ee7f6 |
362 | printf("exitting init()\n"); fflush(stdout);\r |
363 | }\r |
364 | \r |
365 | char *ext_menu = 0, *ext_state = 0;\r |
366 | \r |
367 | void gp2x_deinit(void)\r |
368 | {\r |
8dfb9fd5 |
369 | Reset940(1, 3);\r |
720ee7f6 |
370 | Pause940(1);\r |
371 | \r |
372 | gp2x_video_changemode(15);\r |
4dfd9f42 |
373 | gp2x_memregs[0x290E>>1] = gp2x_screenaddr_old[0];\r |
374 | gp2x_memregs[0x2910>>1] = gp2x_screenaddr_old[1];\r |
375 | gp2x_memregs[0x2912>>1] = gp2x_screenaddr_old[2];\r |
376 | gp2x_memregs[0x2914>>1] = gp2x_screenaddr_old[3];\r |
377 | \r |
0805b5b4 |
378 | munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE);\r |
720ee7f6 |
379 | munmap((void *)gp2x_memregs, 0x10000);\r |
380 | close(memdev);\r |
3f2aaff2 |
381 | if (touchdev >= 0) close(touchdev);\r |
720ee7f6 |
382 | \r |
b3972d82 |
383 | sndout_oss_exit();\r |
384 | usbjoy_deinit();\r |
720ee7f6 |
385 | \r |
386 | printf("all done, running ");\r |
387 | \r |
388 | // Zaq121's alternative frontend support from MAME\r |
b3972d82 |
389 | if (ext_menu && ext_state) {\r |
720ee7f6 |
390 | printf("%s -state %s\n", ext_menu, ext_state);\r |
391 | execl(ext_menu, ext_menu, "-state", ext_state, NULL);\r |
392 | } else if(ext_menu) {\r |
393 | printf("%s\n", ext_menu);\r |
394 | execl(ext_menu, ext_menu, NULL);\r |
395 | } else {\r |
396 | printf("gp2xmenu\n");\r |
397 | chdir("/usr/gp2x");\r |
398 | execl("gp2xmenu", "gp2xmenu", NULL);\r |
399 | }\r |
400 | }\r |
401 | \r |
6245d5a0 |
402 | /* lprintf */\r |
403 | void lprintf(const char *fmt, ...)\r |
404 | {\r |
405 | va_list vl;\r |
406 | \r |
407 | va_start(vl, fmt);\r |
408 | vprintf(fmt, vl);\r |
409 | va_end(vl);\r |
410 | }\r |
720ee7f6 |
411 | \r |