499bf01c |
1 | /* |
2 | * GINGE - GINGE Is Not Gp2x Emulator |
3 | * (C) notaz, 2010-2011 |
4 | * |
5 | * This work is licensed under the MAME license, see COPYING file for details. |
6 | */ |
3adc9ccb |
7 | #include <stdio.h> |
8 | #include <stdlib.h> |
9 | #include <string.h> |
10 | #include <sys/types.h> |
11 | #include <sys/stat.h> |
12 | #include <fcntl.h> |
13 | #include <sys/ioctl.h> |
14 | #include <sys/mman.h> |
15 | #include <unistd.h> |
16 | #include <linux/fb.h> |
eb058b48 |
17 | #include "warm/warm.h" |
3adc9ccb |
18 | |
19 | static volatile unsigned short *memregs; |
adb79840 |
20 | static volatile unsigned int *memregl; |
2798b18c |
21 | int probably_caanoo; |
4d045184 |
22 | int memdev = -1; |
3adc9ccb |
23 | |
24 | #define FB_BUF_COUNT 4 |
25 | static unsigned int fb_paddr[FB_BUF_COUNT]; |
4d045184 |
26 | static int fb_buf_count = FB_BUF_COUNT; |
3adc9ccb |
27 | static int fb_work_buf; |
28 | static int fbdev = -1; |
29 | |
30 | static void *gp2x_screens[FB_BUF_COUNT]; |
31 | static void *g_screen_ptr; |
32 | |
33 | |
34 | static void vout_gp2x_flip(void) |
35 | { |
36 | memregl[0x406C>>2] = fb_paddr[fb_work_buf]; |
37 | memregl[0x4058>>2] |= 0x10; |
38 | |
39 | fb_work_buf++; |
4d045184 |
40 | if (fb_work_buf >= fb_buf_count) |
3adc9ccb |
41 | fb_work_buf = 0; |
42 | g_screen_ptr = gp2x_screens[fb_work_buf]; |
43 | } |
44 | |
4d045184 |
45 | static int vout_gp2x_init(int no_dblbuf) |
3adc9ccb |
46 | { |
47 | struct fb_fix_screeninfo fbfix; |
48 | int i, ret; |
49 | |
50 | memdev = open("/dev/mem", O_RDWR); |
51 | if (memdev == -1) { |
52 | perror("open(/dev/mem) failed"); |
53 | exit(1); |
54 | } |
55 | |
56 | memregs = mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000); |
57 | if (memregs == MAP_FAILED) { |
58 | perror("mmap(memregs) failed"); |
59 | exit(1); |
60 | } |
61 | memregl = (volatile void *)memregs; |
62 | |
63 | fbdev = open("/dev/fb0", O_RDWR); |
64 | if (fbdev < 0) { |
65 | perror("can't open fbdev"); |
66 | exit(1); |
67 | } |
68 | |
69 | ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix); |
70 | if (ret == -1) { |
71 | perror("ioctl(fbdev) failed"); |
72 | exit(1); |
73 | } |
74 | |
75 | printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start); |
76 | fb_paddr[0] = fbfix.smem_start; |
2798b18c |
77 | probably_caanoo = fb_paddr[0] >= 0x4000000; |
78 | printf("looking like Caanoo? %s.\n", probably_caanoo ? "yes" : "no"); |
3adc9ccb |
79 | |
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) |
83 | { |
84 | perror("mmap(gp2x_screens) failed"); |
85 | exit(1); |
86 | } |
87 | memset(gp2x_screens[0], 0, 320*240*2*FB_BUF_COUNT); |
88 | |
4d045184 |
89 | if (!no_dblbuf) { |
90 | warm_init(); |
91 | ret = warm_change_cb_range(WCB_B_BIT, 1, gp2x_screens[0], 320*240*2*FB_BUF_COUNT); |
92 | if (ret != 0) |
93 | fprintf(stderr, "could not make fb buferable.\n"); |
94 | } |
95 | |
adb79840 |
96 | // printf(" %p -> %08x\n", gp2x_screens[0], fb_paddr[0]); |
3adc9ccb |
97 | for (i = 1; i < FB_BUF_COUNT; i++) |
98 | { |
99 | fb_paddr[i] = fb_paddr[i-1] + 320*240*2; |
100 | gp2x_screens[i] = (char *)gp2x_screens[i-1] + 320*240*2; |
adb79840 |
101 | // printf(" %p -> %08x\n", gp2x_screens[i], fb_paddr[i]); |
3adc9ccb |
102 | } |
103 | fb_work_buf = 0; |
104 | g_screen_ptr = gp2x_screens[0]; |
105 | |
4d045184 |
106 | if (no_dblbuf) |
107 | fb_buf_count = 1; |
108 | |
3adc9ccb |
109 | return 0; |
110 | } |
111 | |
6ca08393 |
112 | static void vout_gp2x_set_mode(int bpp, int rot) |
113 | { |
114 | int rot_cmd[2] = { 0, 0 }; |
115 | int code = 0, bytes = 2; |
116 | unsigned int r; |
117 | int ret; |
118 | |
2798b18c |
119 | if (probably_caanoo) |
120 | rot = 0; |
121 | |
6ca08393 |
122 | rot_cmd[0] = rot ? 6 : 5; |
123 | ret = ioctl(fbdev, _IOW('D', 90, int[2]), rot_cmd); |
124 | if (ret < 0) |
125 | perror("rot ioctl failed"); |
126 | |
127 | memregl[0x4004>>2] = rot ? 0x013f00ef : 0x00ef013f; |
128 | memregl[0x4000>>2] |= 1 << 3; |
129 | |
130 | switch (bpp) |
131 | { |
132 | case 8: |
133 | code = 0x443a; |
134 | bytes = 1; |
135 | break; |
136 | |
137 | case 15: |
138 | case 16: |
139 | code = 0x4432; |
140 | bytes = 2; |
141 | break; |
142 | |
143 | default: |
144 | fprintf(stderr, "unhandled bpp request: %d\n", abs(bpp)); |
145 | return; |
146 | } |
147 | |
148 | memregl[0x405c>>2] = bytes; |
149 | memregl[0x4060>>2] = bytes * (rot ? 240 : 320); |
150 | |
151 | r = memregl[0x4058>>2]; |
152 | r = (r & 0xffff) | (code << 16) | 0x10; |
153 | memregl[0x4058>>2] = r; |
154 | } |
155 | |
7000b522 |
156 | static void vout_gp2x_set_palette16(unsigned short *pal, int len) |
157 | { |
158 | int i; |
159 | for (i = 0; i < len; i++) |
160 | memregl[0x4070>>2] = (i << 24) | pal[i]; |
161 | } |
162 | |
163 | static void vout_gp2x_set_palette32(unsigned int *pal, int len) |
6ca08393 |
164 | { |
165 | /* pollux palette is 16bpp only.. */ |
166 | int i; |
167 | for (i = 0; i < len; i++) |
168 | { |
169 | int c = pal[i]; |
170 | c = ((c >> 8) & 0xf800) | ((c >> 5) & 0x07c0) | ((c >> 3) & 0x001f); |
171 | memregl[0x4070>>2] = (i << 24) | c; |
172 | } |
173 | } |
174 | |
3adc9ccb |
175 | void vout_gp2x_finish(void) |
176 | { |
adb79840 |
177 | if (memregl != NULL) { |
178 | if (memregl[0x4058>>2] & 0x10) |
179 | usleep(100000); |
180 | if (memregl[0x4058>>2] & 0x10) |
181 | printf("MLCCONTROL1 dirty? %08x %08x\n", |
182 | memregl[0x406C>>2], memregl[0x4058>>2]); |
183 | |
184 | memregl[0x406C>>2] = fb_paddr[0]; |
185 | memregl[0x4058>>2] |= 0x10; |
186 | munmap((void *)memregs, 0x20000); |
187 | memregs = NULL; |
188 | memregl = NULL; |
189 | } |
3adc9ccb |
190 | |
adb79840 |
191 | close(fbdev); |
3adc9ccb |
192 | close(memdev); |
4d045184 |
193 | |
194 | warm_finish(); |
3adc9ccb |
195 | } |
196 | |