42171343 |
1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | #include <string.h> |
4 | #include <sys/types.h> |
5 | #include <sys/stat.h> |
6 | #include <fcntl.h> |
7 | #include <sys/mman.h> |
8 | #include <unistd.h> |
9 | |
10 | #include "soc.h" |
11 | #include "soc_mmsp2.h" |
12 | #include "gp2x.h" |
13 | #include "../common/emu.h" |
14 | #include "../common/arm_utils.h" |
15 | |
16 | volatile unsigned short *gp2x_memregs; |
17 | volatile unsigned long *gp2x_memregl; |
18 | extern void *gp2x_screens[4]; |
19 | static int screensel = 0; |
20 | |
21 | int memdev = 0; /* used by code940 */ |
22 | static int touchdev = -1; |
23 | static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 }; |
24 | |
25 | #define FRAMEBUFF_SIZE 0x30000 |
26 | #define FRAMEBUFF_WHOLESIZE (FRAMEBUFF_SIZE*4) // 320*240*2 + some more |
27 | #define FRAMEBUFF_ADDR0 (0x4000000 - FRAMEBUFF_WHOLESIZE) |
28 | #define FRAMEBUFF_ADDR1 (FRAMEBUFF_ADDR0 + FRAMEBUFF_SIZE) |
29 | #define FRAMEBUFF_ADDR2 (FRAMEBUFF_ADDR1 + FRAMEBUFF_SIZE) |
30 | #define FRAMEBUFF_ADDR3 (FRAMEBUFF_ADDR2 + FRAMEBUFF_SIZE) |
31 | |
32 | static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 }; |
33 | static int gp2x_screenaddrs_use[4]; |
34 | static unsigned short gp2x_screenaddr_old[4]; |
35 | |
36 | |
37 | /* video stuff */ |
38 | void gp2x_video_flip(void) |
39 | { |
40 | unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3]; |
41 | unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16); |
42 | |
43 | gp2x_memregs[0x2910>>1] = msw; |
44 | gp2x_memregs[0x2914>>1] = msw; |
45 | gp2x_memregs[0x290E>>1] = lsw; |
46 | gp2x_memregs[0x2912>>1] = lsw; |
47 | |
48 | // jump to other buffer: |
49 | g_screen_ptr = gp2x_screens[++screensel&3]; |
50 | } |
51 | |
52 | /* doulblebuffered flip */ |
53 | void gp2x_video_flip2(void) |
54 | { |
55 | unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16); |
56 | |
57 | gp2x_memregs[0x2910>>1] = msw; |
58 | gp2x_memregs[0x2914>>1] = msw; |
59 | gp2x_memregs[0x290E>>1] = 0; |
60 | gp2x_memregs[0x2912>>1] = 0; |
61 | |
62 | // jump to other buffer: |
63 | g_screen_ptr = gp2x_screens[++screensel&1]; |
64 | } |
65 | |
66 | void gp2x_video_changemode_ll(int bpp) |
67 | { |
68 | gp2x_memregs[0x28DA>>1] = (((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/ |
69 | gp2x_memregs[0x290C>>1] = 320*((bpp+1)/8); /*line width in bytes*/ |
70 | } |
71 | |
72 | void gp2x_video_setpalette(int *pal, int len) |
73 | { |
74 | unsigned short *g = (unsigned short *)pal; |
75 | volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1]; |
76 | |
77 | gp2x_memregs[0x2958>>1] = 0; |
78 | |
79 | len *= 2; |
80 | while (len--) |
81 | *memreg = *g++; |
82 | } |
83 | |
84 | // TV Compatible function // |
85 | void gp2x_video_RGB_setscaling(int ln_offs, int W, int H) |
86 | { |
87 | float escalaw, escalah; |
88 | int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3; |
89 | unsigned short scalw; |
90 | |
91 | // set offset |
92 | gp2x_screenaddrs_use[0] = gp2x_screenaddrs[0] + ln_offs * 320 * bpp; |
93 | gp2x_screenaddrs_use[1] = gp2x_screenaddrs[1] + ln_offs * 320 * bpp; |
94 | gp2x_screenaddrs_use[2] = gp2x_screenaddrs[2] + ln_offs * 320 * bpp; |
95 | gp2x_screenaddrs_use[3] = gp2x_screenaddrs[3] + ln_offs * 320 * bpp; |
96 | |
97 | escalaw = 1024.0; // RGB Horiz LCD |
98 | escalah = 320.0; // RGB Vert LCD |
99 | |
100 | if(gp2x_memregs[0x2800>>1]&0x100) //TV-Out |
101 | { |
102 | escalaw=489.0; // RGB Horiz TV (PAL, NTSC) |
103 | if (gp2x_memregs[0x2818>>1] == 287) //PAL |
104 | escalah=274.0; // RGB Vert TV PAL |
105 | else if (gp2x_memregs[0x2818>>1] == 239) //NTSC |
106 | escalah=331.0; // RGB Vert TV NTSC |
107 | } |
108 | |
109 | // scale horizontal |
110 | scalw = (unsigned short)((float)escalaw *(W/320.0)); |
111 | /* if there is no horizontal scaling, vertical doesn't work. Here is a nasty wrokaround... */ |
112 | if (H != 240 && W == 320) scalw--; |
113 | gp2x_memregs[0x2906>>1]=scalw; |
114 | // scale vertical |
115 | gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0)); |
116 | } |
117 | |
118 | void gp2x_video_wait_vsync(void) |
119 | { |
120 | unsigned short v = gp2x_memregs[0x1182>>1]; |
121 | while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10)) |
122 | spend_cycles(1024); |
123 | } |
124 | |
125 | /* 940 */ |
126 | void pause940(int yes) |
127 | { |
128 | if (yes) |
129 | gp2x_memregs[0x0904>>1] &= 0xFFFE; |
130 | else |
131 | gp2x_memregs[0x0904>>1] |= 1; |
132 | } |
133 | |
134 | void reset940(int yes, int bank) |
135 | { |
136 | gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03); |
137 | } |
138 | |
139 | |
140 | /* these are not quite MMSP2 related, |
141 | * more to GP2X F100/F200 consoles themselves. */ |
142 | typedef struct ucb1x00_ts_event |
143 | { |
144 | unsigned short pressure; |
145 | unsigned short x; |
146 | unsigned short y; |
147 | unsigned short pad; |
148 | struct timeval stamp; |
149 | } UCB1X00_TS_EVENT; |
150 | |
151 | int gp2x_touchpad_read(int *x, int *y) |
152 | { |
153 | UCB1X00_TS_EVENT event; |
154 | static int zero_seen = 0; |
155 | int retval; |
156 | |
157 | if (touchdev < 0) return -1; |
158 | |
159 | retval = read(touchdev, &event, sizeof(event)); |
160 | if (retval <= 0) { |
161 | perror("touch read failed"); |
162 | return -1; |
163 | } |
164 | // this is to ignore the messed-up 4.1.x driver |
165 | if (event.pressure == 0) zero_seen = 1; |
166 | |
167 | if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16; |
168 | if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16; |
169 | // printf("read %i %i %i\n", event.pressure, *x, *y); |
170 | |
171 | return zero_seen ? event.pressure : 0; |
172 | } |
173 | |
174 | static void proc_set(const char *path, const char *val) |
175 | { |
176 | FILE *f; |
177 | char tmp[16]; |
178 | |
179 | f = fopen(path, "w"); |
180 | if (f == NULL) { |
181 | printf("failed to open: %s\n", path); |
182 | return; |
183 | } |
184 | |
185 | fprintf(f, "0\n"); |
186 | fclose(f); |
187 | |
188 | printf("\"%s\" is set to: ", path); |
189 | f = fopen(path, "r"); |
190 | if (f == NULL) { |
191 | printf("(open failed)\n"); |
192 | return; |
193 | } |
194 | |
195 | fgets(tmp, sizeof(tmp), f); |
196 | printf("%s", tmp); |
197 | fclose(f); |
198 | } |
199 | |
200 | |
201 | void mmsp2_init(void) |
202 | { |
203 | int i; |
204 | |
205 | memdev = open("/dev/mem", O_RDWR); |
206 | if (memdev == -1) |
207 | { |
208 | perror("open(\"/dev/mem\")"); |
209 | exit(1); |
210 | } |
211 | |
212 | gp2x_memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000); |
213 | if (gp2x_memregs == MAP_FAILED) |
214 | { |
215 | perror("mmap(memregs)"); |
216 | exit(1); |
217 | } |
218 | gp2x_memregl = (unsigned long *) gp2x_memregs; |
219 | |
220 | gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers |
221 | |
222 | gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED, |
223 | memdev, gp2x_screenaddrs[0]); |
224 | if (gp2x_screens[0] == MAP_FAILED) |
225 | { |
226 | perror("mmap(g_screen_ptr)"); |
227 | exit(1); |
228 | } |
229 | printf("framebuffers:\n"); |
230 | printf(" %08x -> %p\n", gp2x_screenaddrs[0], gp2x_screens[0]); |
231 | for (i = 1; i < 4; i++) |
232 | { |
233 | gp2x_screens[i] = (char *) gp2x_screens[i - 1] + FRAMEBUFF_SIZE; |
234 | printf(" %08x -> %p\n", gp2x_screenaddrs[i], gp2x_screens[i]); |
235 | } |
236 | |
237 | g_screen_ptr = gp2x_screens[0]; |
238 | screensel = 0; |
239 | |
240 | gp2x_screenaddr_old[0] = gp2x_memregs[0x290E>>1]; |
241 | gp2x_screenaddr_old[1] = gp2x_memregs[0x2910>>1]; |
242 | gp2x_screenaddr_old[2] = gp2x_memregs[0x2912>>1]; |
243 | gp2x_screenaddr_old[3] = gp2x_memregs[0x2914>>1]; |
244 | |
245 | memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs)); |
246 | |
247 | // touchscreen |
248 | touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY); |
249 | if (touchdev >= 0) { |
250 | FILE *pcf = fopen("/etc/pointercal", "r"); |
251 | if (pcf) { |
252 | fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1], |
253 | &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]); |
254 | fclose(pcf); |
255 | } |
256 | printf("found touchscreen/wm97xx\n"); |
257 | } |
258 | |
259 | /* disable Linux read-ahead */ |
260 | proc_set("/proc/sys/vm/max-readahead", "0\n"); |
261 | proc_set("/proc/sys/vm/min-readahead", "0\n"); |
262 | } |
263 | |
264 | void mmsp2_finish(void) |
265 | { |
266 | reset940(1, 3); |
267 | pause940(1); |
268 | |
269 | gp2x_memregs[0x290E>>1] = gp2x_screenaddr_old[0]; |
270 | gp2x_memregs[0x2910>>1] = gp2x_screenaddr_old[1]; |
271 | gp2x_memregs[0x2912>>1] = gp2x_screenaddr_old[2]; |
272 | gp2x_memregs[0x2914>>1] = gp2x_screenaddr_old[3]; |
273 | |
274 | munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE); |
275 | munmap((void *)gp2x_memregs, 0x10000); |
276 | close(memdev); |
277 | if (touchdev >= 0) |
278 | close(touchdev); |
279 | } |
280 | |