| 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 | |