[picodrive.git] / platform / gp2x / gp2x.c

/**\r
 * All this is mostly based on rlyeh's minimal library.\r
 * Copied here to review all his code and understand what's going on.\r
**/\r
\r
/*\r
\r
  GP2X minimal library v0.A by rlyeh, (c) 2005. emulnation.info@rlyeh (swap it!)\r
\r
  Thanks to Squidge, Robster, snaff, Reesy and NK, for the help & previous work! :-)\r
\r
  License\r
  =======\r
\r
  Free for non-commercial projects (it would be nice receiving a mail from you).\r
  Other cases, ask me first.\r
\r
  GamePark Holdings is not allowed to use this library and/or use parts from it.\r
\r
*/\r
\r
\r
#include <stdio.h>\r
#include <stdlib.h>\r
#include <stdarg.h>\r
#include <string.h>\r
#include <unistd.h>\r
#include <sys/mman.h>\r
#include <sys/types.h>\r
#include <sys/stat.h>\r
#include <fcntl.h>\r
#include <errno.h>\r
\r
#include "gp2x.h"\r
#include "../linux/usbjoy.h"\r
#include "../linux/sndout_oss.h"\r
#include "../common/arm_utils.h"\r
#include "../common/arm_linux.h"\r
\r
volatile unsigned short *gp2x_memregs;\r
//static\r
volatile unsigned long  *gp2x_memregl;\r
static void *gp2x_screens[4];\r
static int screensel = 0;\r
//static\r
int memdev = 0;\r
static int touchdev = -1;\r
static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };\r
\r
void *gp2x_screen;\r
\r
#define FRAMEBUFF_WHOLESIZE (0x30000*4) // 320*240*2 + some more\r
#define FRAMEBUFF_ADDR0 (0x4000000-FRAMEBUFF_WHOLESIZE)\r
#define FRAMEBUFF_ADDR1 (FRAMEBUFF_ADDR0+0x30000)\r
#define FRAMEBUFF_ADDR2 (FRAMEBUFF_ADDR1+0x30000)\r
#define FRAMEBUFF_ADDR3 (FRAMEBUFF_ADDR2+0x30000)\r
\r
static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 };\r
static int gp2x_screenaddrs_use[4];\r
static unsigned short gp2x_screenaddr_old[4];\r
\r
\r
/* video stuff */\r
void gp2x_video_flip(void)\r
{\r
	unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3];\r
	unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16);\r
\r
  	gp2x_memregs[0x2910>>1] = msw;\r
  	gp2x_memregs[0x2914>>1] = msw;\r
	gp2x_memregs[0x290E>>1] = lsw;\r
  	gp2x_memregs[0x2912>>1] = lsw;\r
\r
	// jump to other buffer:\r
	gp2x_screen = gp2x_screens[++screensel&3];\r
}\r
\r
/* doulblebuffered flip */\r
void gp2x_video_flip2(void)\r
{\r
	unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16);\r
\r
  	gp2x_memregs[0x2910>>1] = msw;\r
  	gp2x_memregs[0x2914>>1] = msw;\r
	gp2x_memregs[0x290E>>1] = 0;\r
  	gp2x_memregs[0x2912>>1] = 0;\r
\r
	// jump to other buffer:\r
	gp2x_screen = gp2x_screens[++screensel&1];\r
}\r
\r
\r
void gp2x_video_changemode2(int bpp)\r
{\r
  	gp2x_memregs[0x28DA>>1]=(((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/\r
  	gp2x_memregs[0x290C>>1]=320*((bpp+1)/8); /*line width in bytes*/\r
}\r
\r
\r
void gp2x_video_changemode(int bpp)\r
{\r
	gp2x_video_changemode2(bpp);\r
\r
  	gp2x_memset_all_buffers(0, 0, 320*240*2);\r
	gp2x_video_flip();\r
}\r
\r
\r
void gp2x_video_setpalette(int *pal, int len)\r
{\r
	unsigned short *g=(unsigned short *)pal;\r
	volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1];\r
	gp2x_memregs[0x2958>>1] = 0;\r
\r
	len *= 2;\r
	while(len--) *memreg=*g++;\r
}\r
\r
\r
// TV Compatible function //\r
void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)\r
{\r
	float escalaw, escalah;\r
	int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3;\r
	unsigned short scalw;\r
\r
	// set offset\r
	gp2x_screenaddrs_use[0] = gp2x_screenaddrs[0] + ln_offs * 320 * bpp;\r
	gp2x_screenaddrs_use[1] = gp2x_screenaddrs[1] + ln_offs * 320 * bpp;\r
	gp2x_screenaddrs_use[2] = gp2x_screenaddrs[2] + ln_offs * 320 * bpp;\r
	gp2x_screenaddrs_use[3] = gp2x_screenaddrs[3] + ln_offs * 320 * bpp;\r
\r
	escalaw = 1024.0; // RGB Horiz LCD\r
	escalah = 320.0; // RGB Vert LCD\r
\r
	if(gp2x_memregs[0x2800>>1]&0x100) //TV-Out\r
	{\r
		escalaw=489.0; // RGB Horiz TV (PAL, NTSC)\r
		if (gp2x_memregs[0x2818>>1]  == 287) //PAL\r
			escalah=274.0; // RGB Vert TV PAL\r
		else if (gp2x_memregs[0x2818>>1]  == 239) //NTSC\r
			escalah=331.0; // RGB Vert TV NTSC\r
	}\r
\r
	// scale horizontal\r
	scalw = (unsigned short)((float)escalaw *(W/320.0));\r
	/* if there is no horizontal scaling, vertical doesn't work. Here is a nasty wrokaround... */\r
	if (H != 240 && W == 320) scalw--;\r
	gp2x_memregs[0x2906>>1]=scalw;\r
	// scale vertical\r
	gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0));\r
}\r
\r
\r
void gp2x_video_wait_vsync(void)\r
{\r
	unsigned short v = gp2x_memregs[0x1182>>1];\r
	while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10)) spend_cycles(1024);\r
}\r
\r
\r
void gp2x_video_flush_cache(void)\r
{\r
	// since we are using the mmu hack, we must flush the cache first\r
	cache_flush_d_inval_i(gp2x_screen, (char *)gp2x_screen + 320*240*2);\r
}\r
\r
\r
void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)\r
{\r
	char *dst;\r
	if (buffers & (1<<0)) { dst = (char *)gp2x_screens[0] + offset; if (dst != data) memcpy(dst, data, len); }\r
	if (buffers & (1<<1)) { dst = (char *)gp2x_screens[1] + offset; if (dst != data) memcpy(dst, data, len); }\r
	if (buffers & (1<<2)) { dst = (char *)gp2x_screens[2] + offset; if (dst != data) memcpy(dst, data, len); }\r
	if (buffers & (1<<3)) { dst = (char *)gp2x_screens[3] + offset; if (dst != data) memcpy(dst, data, len); }\r
}\r
\r
\r
void gp2x_memcpy_all_buffers(void *data, int offset, int len)\r
{\r
	gp2x_memcpy_buffers(0xf, data, offset, len);\r
}\r
\r
\r
void gp2x_memset_all_buffers(int offset, int byte, int len)\r
{\r
	memset((char *)gp2x_screens[0] + offset, byte, len);\r
	memset((char *)gp2x_screens[1] + offset, byte, len);\r
	memset((char *)gp2x_screens[2] + offset, byte, len);\r
	memset((char *)gp2x_screens[3] + offset, byte, len);\r
}\r
\r
\r
void gp2x_pd_clone_buffer2(void)\r
{\r
	memcpy(gp2x_screen, gp2x_screens[2], 320*240*2);\r
}\r
\r
\r
unsigned long gp2x_joystick_read(int allow_usb_joy)\r
{\r
	int i;\r
  	unsigned long value=(gp2x_memregs[0x1198>>1] & 0x00FF); // GPIO M\r
  	if(value==0xFD) value=0xFA;\r
  	if(value==0xF7) value=0xEB;\r
  	if(value==0xDF) value=0xAF;\r
  	if(value==0x7F) value=0xBE;\r
  	value = ~((gp2x_memregs[0x1184>>1] & 0xFF00) | value | (gp2x_memregs[0x1186>>1] << 16)); // C D\r
\r
	if (allow_usb_joy && num_of_joys > 0) {\r
		// check the usb joy as well..\r
		usbjoy_update();\r
		for (i = 0; i < num_of_joys; i++)\r
			value |= usbjoy_check(i);\r
	}\r
\r
	return value;\r
}\r
\r
typedef struct ucb1x00_ts_event\r
{\r
	unsigned short pressure;\r
	unsigned short x;\r
	unsigned short y;\r
	unsigned short pad;\r
	struct timeval stamp;\r
} UCB1X00_TS_EVENT;\r
\r
int gp2x_touchpad_read(int *x, int *y)\r
{\r
	UCB1X00_TS_EVENT event;\r
	static int zero_seen = 0;\r
	int retval;\r
\r
	if (touchdev < 0) return -1;\r
\r
	retval = read(touchdev, &event, sizeof(event));\r
	if (retval <= 0) {\r
		printf("touch read failed %i %i\n", retval, errno);\r
		return -1;\r
	}\r
	// this is to ignore the messed-up 4.1.x driver\r
	if (event.pressure == 0) zero_seen = 1;\r
\r
	if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16;\r
	if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16;\r
	// printf("read %i %i %i\n", event.pressure, *x, *y);\r
\r
	return zero_seen ? event.pressure : 0;\r
}\r
\r
\r
/* 940 */\r
void Pause940(int yes)\r
{\r
	if(yes)\r
		gp2x_memregs[0x0904>>1] &= 0xFFFE;\r
	else\r
		gp2x_memregs[0x0904>>1] |= 1;\r
}\r
\r
\r
void Reset940(int yes, int bank)\r
{\r
	gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03);\r
}\r
\r
static void proc_set(const char *path, const char *val)\r
{\r
	FILE *f;\r
	char tmp[16];\r
\r
	f = fopen(path, "w");\r
	if (f == NULL) {\r
		printf("failed to open: %s\n", path);\r
		return;\r
	}\r
\r
	fprintf(f, "0\n");\r
	fclose(f);\r
\r
	printf("\"%s\" is set to: ", path);\r
	f = fopen(path, "r");\r
	if (f == NULL) {\r
		printf("(open failed)\n");\r
		return;\r
	}\r
\r
	fgets(tmp, sizeof(tmp), f);\r
	printf("%s", tmp);\r
	fclose(f);\r
}\r
\r
\r
/* common */\r
void gp2x_init(void)\r
{\r
	printf("entering init()\n"); fflush(stdout);\r
\r
  	memdev = open("/dev/mem", O_RDWR);\r
	if (memdev == -1)\r
	{\r
		perror("open(\"/dev/mem\")");\r
		exit(1);\r
	}\r
\r
	gp2x_memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);\r
	printf("memregs are @ %p\n", gp2x_memregs);\r
	if(gp2x_memregs == MAP_FAILED)\r
	{\r
		perror("mmap(memregs)");\r
		exit(1);\r
	}\r
	gp2x_memregl = (unsigned long *) gp2x_memregs;\r
\r
	gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers\r
\r
  	gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED, memdev, FRAMEBUFF_ADDR0);\r
	if(gp2x_screens[0] == MAP_FAILED)\r
	{\r
		perror("mmap(gp2x_screen)");\r
		exit(1);\r
	}\r
	printf("framebuffers point to %p\n", gp2x_screens[0]);\r
	gp2x_screens[1] = (char *) gp2x_screens[0]+0x30000;\r
	gp2x_screens[2] = (char *) gp2x_screens[1]+0x30000;\r
	gp2x_screens[3] = (char *) gp2x_screens[2]+0x30000;\r
\r
	gp2x_screen = gp2x_screens[0];\r
	screensel = 0;\r
\r
	gp2x_screenaddr_old[0] = gp2x_memregs[0x290E>>1];\r
	gp2x_screenaddr_old[1] = gp2x_memregs[0x2910>>1];\r
	gp2x_screenaddr_old[2] = gp2x_memregs[0x2912>>1];\r
	gp2x_screenaddr_old[3] = gp2x_memregs[0x2914>>1];\r
\r
	memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs));\r
	gp2x_memset_all_buffers(0, 0, 320*240*2);\r
\r
	// snd\r
	sndout_oss_init();\r
\r
	/* init usb joys -GnoStiC */\r
	usbjoy_init();\r
\r
	// touchscreen\r
	touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY);\r
	if (touchdev >= 0) {\r
		FILE *pcf = fopen("/etc/pointercal", "r");\r
		if (pcf) {\r
			fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1],\r
				&touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]);\r
			fclose(pcf);\r
		}\r
		printf("found touchscreen/wm97xx\n");\r
	}\r
\r
	/* disable Linux read-ahead */\r
	proc_set("/proc/sys/vm/max-readahead", "0\n");\r
	proc_set("/proc/sys/vm/min-readahead", "0\n");\r
\r
	printf("exitting init()\n"); fflush(stdout);\r
}\r
\r
char *ext_menu = 0, *ext_state = 0;\r
\r
void gp2x_deinit(void)\r
{\r
	Reset940(1, 3);\r
	Pause940(1);\r
\r
	gp2x_video_changemode(15);\r
	gp2x_memregs[0x290E>>1] = gp2x_screenaddr_old[0];\r
	gp2x_memregs[0x2910>>1] = gp2x_screenaddr_old[1];\r
	gp2x_memregs[0x2912>>1] = gp2x_screenaddr_old[2];\r
	gp2x_memregs[0x2914>>1] = gp2x_screenaddr_old[3];\r
\r
	munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE);\r
	munmap((void *)gp2x_memregs, 0x10000);\r
	close(memdev);\r
	if (touchdev >= 0) close(touchdev);\r
\r
	sndout_oss_exit();\r
	usbjoy_deinit();\r
\r
	printf("all done, running ");\r
\r
	// Zaq121's alternative frontend support from MAME\r
	if (ext_menu && ext_state) {\r
		printf("%s -state %s\n", ext_menu, ext_state);\r
		execl(ext_menu, ext_menu, "-state", ext_state, NULL);\r
	} else if(ext_menu) {\r
		printf("%s\n", ext_menu);\r
		execl(ext_menu, ext_menu, NULL);\r
	} else {\r
		printf("gp2xmenu\n");\r
		chdir("/usr/gp2x");\r
		execl("gp2xmenu", "gp2xmenu", NULL);\r
	}\r
}\r
\r
/* lprintf */\r
void lprintf(const char *fmt, ...)\r
{\r
	va_list vl;\r
\r
	va_start(vl, fmt);\r
	vprintf(fmt, vl);\r
	va_end(vl);\r
}\r
\r
Commit	Line	Data
cc68a136	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
ca61ee42	25	#include <stdarg.h>\r
cc68a136	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
cc68a136	31	#include <fcntl.h>\r
	32	#include <errno.h>\r
	33	\r
	34	#include "gp2x.h"\r
e5ab6faf	35	#include "../linux/usbjoy.h"\r
e5ab6faf	36	#include "../linux/sndout_oss.h"\r
e5f426aa	37	#include "../common/arm_utils.h"\r
16b0afd0	38	#include "../common/arm_linux.h"\r
cc68a136	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
e5ab6faf	47	static int touchdev = -1;\r
85a4b5a4	48	static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };\r
cc68a136	49	\r
	50	void *gp2x_screen;\r
	51	\r
76276b0b	52	#define FRAMEBUFF_WHOLESIZE (0x300004) // 320240*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
cc68a136	57	\r
2433f409	58	static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 };\r
2433f409	59	static int gp2x_screenaddrs_use[4];\r
85f8e929	60	static unsigned short gp2x_screenaddr_old[4];\r
cc68a136	61	\r
	62	\r
	63	/* video stuff */\r
	64	void gp2x_video_flip(void)\r
	65	{\r
2433f409	66	unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3];\r
2433f409	67	unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16);\r
cc68a136	68	\r
76276b0b	69	gp2x_memregs[0x2910>>1] = msw;\r
76276b0b	70	gp2x_memregs[0x2914>>1] = msw;\r
2433f409	71	gp2x_memregs[0x290E>>1] = lsw;\r
2433f409	72	gp2x_memregs[0x2912>>1] = lsw;\r
cc68a136	73	\r
	74	// jump to other buffer:\r
	75	gp2x_screen = gp2x_screens[++screensel&3];\r
	76	}\r
	77	\r
e11c5548	78	/* doulblebuffered flip */\r
	79	void gp2x_video_flip2(void)\r
	80	{\r
2433f409	81	unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16);\r
cc68a136	82	\r
76276b0b	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
e11c5548	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
cc68a136	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
e11c5548	97	}\r
	98	\r
	99	\r
	100	void gp2x_video_changemode(int bpp)\r
	101	{\r
	102	gp2x_video_changemode2(bpp);\r
cc68a136	103	\r
76276b0b	104	gp2x_memset_all_buffers(0, 0, 3202402);\r
cc68a136	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
2433f409	121	void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)\r
cc68a136	122	{\r
	123	float escalaw, escalah;\r
	124	int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3;\r
2433f409	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
cc68a136	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
2433f409	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
cc68a136	150	// scale vertical\r
	151	gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah bpp (H/240.0));\r
	152	}\r
	153	\r
	154	\r
cc68a136	155	void gp2x_video_wait_vsync(void)\r
cc68a136	156	{\r
aae35e84	157	unsigned short v = gp2x_memregs[0x1182>>1];\r
aae35e84	158	while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10)) spend_cycles(1024);\r
cc68a136	159	}\r
	160	\r
	161	\r
a12e0116	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
16b0afd0	165	cache_flush_d_inval_i(gp2x_screen, (char )gp2x_screen + 320240*2);\r
a12e0116	166	}\r
	167	\r
	168	\r
860c6322	169	void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)\r
860c6322	170	{\r
a9b3ffd3	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
860c6322	176	}\r
	177	\r
	178	\r
cc68a136	179	void gp2x_memcpy_all_buffers(void *data, int offset, int len)\r
cc68a136	180	{\r
860c6322	181	gp2x_memcpy_buffers(0xf, data, offset, len);\r
cc68a136	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
e11c5548	194	void gp2x_pd_clone_buffer2(void)\r
e11c5548	195	{\r
a12e0116	196	memcpy(gp2x_screen, gp2x_screens[2], 3202402);\r
e11c5548	197	}\r
	198	\r
	199	\r
cc68a136	200	unsigned long gp2x_joystick_read(int allow_usb_joy)\r
	201	{\r
	202	int i;\r
07abbab1	203	unsigned long value=(gp2x_memregs[0x1198>>1] & 0x00FF); // GPIO M\r
cc68a136	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
07abbab1	208	value = ~((gp2x_memregs[0x1184>>1] & 0xFF00) \| value \| (gp2x_memregs[0x1186>>1] << 16)); // C D\r
cc68a136	209	\r
	210	if (allow_usb_joy && num_of_joys > 0) {\r
	211	// check the usb joy as well..\r
e5ab6faf	212	usbjoy_update();\r
cc68a136	213	for (i = 0; i < num_of_joys; i++)\r
e5ab6faf	214	value \|= usbjoy_check(i);\r
cc68a136	215	}\r
	216	\r
	217	return value;\r
	218	}\r
	219	\r
85a4b5a4	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
f0f0d2df	232	static int zero_seen = 0;\r
85a4b5a4	233	int retval;\r
	234	\r
	235	if (touchdev < 0) return -1;\r
	236	\r
	237	retval = read(touchdev, &event, sizeof(event));\r
2b02d6e5	238	if (retval <= 0) {\r
85a4b5a4	239	printf("touch read failed %i %i\n", retval, errno);\r
	240	return -1;\r
	241	}\r
f0f0d2df	242	// this is to ignore the messed-up 4.1.x driver\r
2b02d6e5	243	if (event.pressure == 0) zero_seen = 1;\r
85a4b5a4	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
f0f0d2df	249	return zero_seen ? event.pressure : 0;\r
85a4b5a4	250	}\r
	251	\r
	252	\r
cc68a136	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
b837b69b	263	void Reset940(int yes, int bank)\r
cc68a136	264	{\r
76276b0b	265	gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) \| (bank & 0x03);\r
cc68a136	266	}\r
cc68a136	267	\r
2d2247c2	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
cc68a136	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
e5ab6faf	303	perror("open(\"/dev/mem\")");\r
cc68a136	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
e5ab6faf	311	perror("mmap(memregs)");\r
cc68a136	312	exit(1);\r
	313	}\r
	314	gp2x_memregl = (unsigned long *) gp2x_memregs;\r
	315	\r
2100fc9b	316	gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers\r
2100fc9b	317	\r
76276b0b	318	gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED, memdev, FRAMEBUFF_ADDR0);\r
76276b0b	319	if(gp2x_screens[0] == MAP_FAILED)\r
cc68a136	320	{\r
e5ab6faf	321	perror("mmap(gp2x_screen)");\r
cc68a136	322	exit(1);\r
cc68a136	323	}\r
76276b0b	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
cc68a136	328	\r
	329	gp2x_screen = gp2x_screens[0];\r
	330	screensel = 0;\r
	331	\r
85f8e929	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
2433f409	337	memcpy(gp2x_screenaddrs_use, gp2x_screenaddrs, sizeof(gp2x_screenaddrs));\r
76276b0b	338	gp2x_memset_all_buffers(0, 0, 3202402);\r
76276b0b	339	\r
cc68a136	340	// snd\r
e5ab6faf	341	sndout_oss_init();\r
cc68a136	342	\r
cc68a136	343	/* init usb joys -GnoStiC */\r
e5ab6faf	344	usbjoy_init();\r
cc68a136	345	\r
85a4b5a4	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
2d2247c2	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
cc68a136	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
b837b69b	369	Reset940(1, 3);\r
cc68a136	370	Pause940(1);\r
	371	\r
	372	gp2x_video_changemode(15);\r
85f8e929	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
76276b0b	378	munmap(gp2x_screens[0], FRAMEBUFF_WHOLESIZE);\r
cc68a136	379	munmap((void *)gp2x_memregs, 0x10000);\r
cc68a136	380	close(memdev);\r
85a4b5a4	381	if (touchdev >= 0) close(touchdev);\r
cc68a136	382	\r
e5ab6faf	383	sndout_oss_exit();\r
e5ab6faf	384	usbjoy_deinit();\r
cc68a136	385	\r
	386	printf("all done, running ");\r
	387	\r
	388	// Zaq121's alternative frontend support from MAME\r
e5ab6faf	389	if (ext_menu && ext_state) {\r
cc68a136	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
ca61ee42	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
cc68a136	411	\r