2 * GINGE - GINGE Is Not Gp2x Emulator
5 * This work is licensed under the MAME license, see COPYING file for details.
10 #include <sys/types.h>
13 #include <sys/ioctl.h>
17 #include "warm/warm.h"
19 static volatile unsigned short *memregs;
20 static volatile unsigned int *memregl;
24 #define FB_BUF_COUNT 4
25 static unsigned int fb_paddr[FB_BUF_COUNT];
26 static int fb_buf_count = FB_BUF_COUNT;
27 static int fb_work_buf;
28 static int fbdev = -1;
30 static void *gp2x_screens[FB_BUF_COUNT];
31 static void *g_screen_ptr;
34 static void vout_gp2x_flip(void)
36 memregl[0x406C>>2] = fb_paddr[fb_work_buf];
37 memregl[0x4058>>2] |= 0x10;
40 if (fb_work_buf >= fb_buf_count)
42 g_screen_ptr = gp2x_screens[fb_work_buf];
45 static int vout_gp2x_init(int no_dblbuf)
47 struct fb_fix_screeninfo fbfix;
50 memdev = open("/dev/mem", O_RDWR);
52 perror("open(/dev/mem) failed");
56 memregs = mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
57 if (memregs == MAP_FAILED) {
58 perror("mmap(memregs) failed");
61 memregl = (volatile void *)memregs;
63 fbdev = open("/dev/fb0", O_RDWR);
65 perror("can't open fbdev");
69 ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
71 perror("ioctl(fbdev) failed");
75 printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
76 fb_paddr[0] = fbfix.smem_start;
77 probably_caanoo = fb_paddr[0] >= 0x4000000;
78 printf("looking like Caanoo? %s.\n", probably_caanoo ? "yes" : "no");
80 gp2x_screens[0] = mmap(0, 320*240*2*FB_BUF_COUNT, PROT_READ|PROT_WRITE,
81 MAP_SHARED, memdev, fb_paddr[0]);
82 if (gp2x_screens[0] == MAP_FAILED)
84 perror("mmap(gp2x_screens) failed");
87 memset(gp2x_screens[0], 0, 320*240*2*FB_BUF_COUNT);
91 ret = warm_change_cb_range(WCB_B_BIT, 1, gp2x_screens[0], 320*240*2*FB_BUF_COUNT);
93 fprintf(stderr, "could not make fb buferable.\n");
96 // printf(" %p -> %08x\n", gp2x_screens[0], fb_paddr[0]);
97 for (i = 1; i < FB_BUF_COUNT; i++)
99 fb_paddr[i] = fb_paddr[i-1] + 320*240*2;
100 gp2x_screens[i] = (char *)gp2x_screens[i-1] + 320*240*2;
101 // printf(" %p -> %08x\n", gp2x_screens[i], fb_paddr[i]);
104 g_screen_ptr = gp2x_screens[0];
112 static void vout_gp2x_set_mode(int bpp, int rot)
114 int rot_cmd[2] = { 0, 0 };
115 int code = 0, bytes = 2;
122 rot_cmd[0] = rot ? 6 : 5;
123 ret = ioctl(fbdev, _IOW('D', 90, int[2]), rot_cmd);
125 perror("rot ioctl failed");
127 memregl[0x4004>>2] = rot ? 0x013f00ef : 0x00ef013f;
128 memregl[0x4000>>2] |= 1 << 3;
144 fprintf(stderr, "unhandled bpp request: %d\n", abs(bpp));
148 memregl[0x405c>>2] = bytes;
149 memregl[0x4060>>2] = bytes * (rot ? 240 : 320);
151 r = memregl[0x4058>>2];
152 r = (r & 0xffff) | (code << 16) | 0x10;
153 memregl[0x4058>>2] = r;
156 static void vout_gp2x_set_palette16(unsigned short *pal, int len)
159 for (i = 0; i < len; i++)
160 memregl[0x4070>>2] = (i << 24) | pal[i];
163 static void vout_gp2x_set_palette32(unsigned int *pal, int len)
165 /* pollux palette is 16bpp only.. */
167 for (i = 0; i < len; i++)
170 c = ((c >> 8) & 0xf800) | ((c >> 5) & 0x07c0) | ((c >> 3) & 0x001f);
171 memregl[0x4070>>2] = (i << 24) | c;
175 void vout_gp2x_finish(void)
177 if (memregl != NULL) {
178 if (memregl[0x4058>>2] & 0x10)
180 if (memregl[0x4058>>2] & 0x10)
181 printf("MLCCONTROL1 dirty? %08x %08x\n",
182 memregl[0x406C>>2], memregl[0x4058>>2]);
184 memregl[0x406C>>2] = fb_paddr[0];
185 memregl[0x4058>>2] |= 0x10;
186 munmap((void *)memregs, 0x20000);