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1.1 root 1: #ifndef __VGATABLES_H
2: #define __VGATABLES_H
3:
4: #include "types.h" // u8
5: #include "farptr.h" // struct segoff_s
6:
7: /*
8: *
9: * VGA registers
10: *
11: */
12: #define VGAREG_ACTL_ADDRESS 0x3c0
13: #define VGAREG_ACTL_WRITE_DATA 0x3c0
14: #define VGAREG_ACTL_READ_DATA 0x3c1
15:
16: #define VGAREG_INPUT_STATUS 0x3c2
17: #define VGAREG_WRITE_MISC_OUTPUT 0x3c2
18: #define VGAREG_VIDEO_ENABLE 0x3c3
19: #define VGAREG_SEQU_ADDRESS 0x3c4
20: #define VGAREG_SEQU_DATA 0x3c5
21:
22: #define VGAREG_PEL_MASK 0x3c6
23: #define VGAREG_DAC_STATE 0x3c7
24: #define VGAREG_DAC_READ_ADDRESS 0x3c7
25: #define VGAREG_DAC_WRITE_ADDRESS 0x3c8
26: #define VGAREG_DAC_DATA 0x3c9
27:
28: #define VGAREG_READ_FEATURE_CTL 0x3ca
29: #define VGAREG_READ_MISC_OUTPUT 0x3cc
30:
31: #define VGAREG_GRDC_ADDRESS 0x3ce
32: #define VGAREG_GRDC_DATA 0x3cf
33:
34: #define VGAREG_MDA_CRTC_ADDRESS 0x3b4
35: #define VGAREG_MDA_CRTC_DATA 0x3b5
36: #define VGAREG_VGA_CRTC_ADDRESS 0x3d4
37: #define VGAREG_VGA_CRTC_DATA 0x3d5
38:
39: #define VGAREG_MDA_WRITE_FEATURE_CTL 0x3ba
40: #define VGAREG_VGA_WRITE_FEATURE_CTL 0x3da
41: #define VGAREG_ACTL_RESET 0x3da
42:
43: #define VGAREG_MDA_MODECTL 0x3b8
44: #define VGAREG_CGA_MODECTL 0x3d8
45: #define VGAREG_CGA_PALETTE 0x3d9
46:
47: /* Video memory */
48: #define SEG_GRAPH 0xA000
49: #define SEG_CTEXT 0xB800
50: #define SEG_MTEXT 0xB000
51:
52: /*
53: * Tables of default values for each mode
54: */
55: #define TEXT 0x80
56:
57: #define CTEXT (0x00 | TEXT)
58: #define MTEXT (0x01 | TEXT)
59: #define CGA 0x02
60: #define PLANAR1 0x03
61: #define PLANAR4 0x04
62: #define LINEAR8 0x05
63:
64: // for SVGA
65: #define LINEAR15 0x10
66: #define LINEAR16 0x11
67: #define LINEAR24 0x12
68: #define LINEAR32 0x13
69:
70: #define SCREEN_IO_START(x,y,p) (((((x)*(y)) | 0x00ff) + 1) * (p))
71: #define SCREEN_MEM_START(x,y,p) SCREEN_IO_START(((x)*2),(y),(p))
72:
73: /* standard BIOS Video Parameter Table */
74: struct VideoParam_s {
75: u8 twidth;
76: u8 theightm1;
77: u8 cheight;
78: u16 slength;
79: u8 sequ_regs[4];
80: u8 miscreg;
81: u8 crtc_regs[25];
82: u8 actl_regs[20];
83: u8 grdc_regs[9];
84: } PACKED;
85:
86: struct vgamode_s {
87: u8 svgamode;
88: struct VideoParam_s *vparam;
89: u8 memmodel; /* CTEXT,MTEXT,CGA,PL1,PL2,PL4,P8,P15,P16,P24,P32 */
90: u8 pixbits;
91: u16 sstart;
92: u8 pelmask;
93: u8 *dac;
94: u16 dacsize;
95: };
96:
97: struct saveVideoHardware {
98: u8 sequ_index;
99: u8 crtc_index;
100: u8 grdc_index;
101: u8 actl_index;
102: u8 feature;
103: u8 sequ_regs[4];
104: u8 sequ0;
105: u8 crtc_regs[25];
106: u8 actl_regs[20];
107: u8 grdc_regs[9];
108: u16 crtc_addr;
109: u8 plane_latch[4];
110: };
111:
112: struct saveBDAstate {
113: u8 video_mode;
114: u16 video_cols;
115: u16 video_pagesize;
116: u16 crtc_address;
117: u8 video_rows;
118: u16 char_height;
119: u8 video_ctl;
120: u8 video_switches;
121: u8 modeset_ctl;
122: u16 cursor_type;
123: u16 cursor_pos[8];
124: u16 video_pagestart;
125: u8 video_page;
126: /* current font */
127: struct segoff_s font0;
128: struct segoff_s font1;
129: };
130:
131: struct saveDACcolors {
132: u8 rwmode;
133: u8 peladdr;
134: u8 pelmask;
135: u8 dac[768];
136: u8 color_select;
137: };
138:
139: // vgatables.c
140: struct vgamode_s *find_vga_entry(u8 mode);
141: extern u16 video_save_pointer_table[];
142: extern struct VideoParam_s video_param_table[];
143: extern u8 static_functionality[];
144:
145: // vgafonts.c
146: extern u8 vgafont8[];
147: extern u8 vgafont14[];
148: extern u8 vgafont16[];
149: extern u8 vgafont14alt[];
150: extern u8 vgafont16alt[];
151:
152: // vga.c
153: struct carattr {
154: u8 car, attr, use_attr;
155: };
156: struct cursorpos {
157: u8 x, y, page;
158: };
159:
160: // vgafb.c
161: void clear_screen(struct vgamode_s *vmode_g);
162: void vgafb_scroll(int nblines, int attr
163: , struct cursorpos ul, struct cursorpos lr);
164: void vgafb_write_char(struct cursorpos cp, struct carattr ca);
165: struct carattr vgafb_read_char(struct cursorpos cp);
166: void vgafb_write_pixel(u8 color, u16 x, u16 y);
167: u8 vgafb_read_pixel(u16 x, u16 y);
168: void vgafb_load_font(u16 seg, void *src_far, u16 count
169: , u16 start, u8 destflags, u8 fontsize);
170:
171: // vgaio.c
1.1.1.2 ! root 172: void vgahw_screen_disable(void);
! 173: void vgahw_screen_enable(void);
1.1 root 174: void vgahw_set_border_color(u8 color);
175: void vgahw_set_overscan_border_color(u8 color);
1.1.1.2 ! root 176: u8 vgahw_get_overscan_border_color(void);
1.1 root 177: void vgahw_set_palette(u8 palid);
178: void vgahw_set_single_palette_reg(u8 reg, u8 val);
179: u8 vgahw_get_single_palette_reg(u8 reg);
180: void vgahw_set_all_palette_reg(u16 seg, u8 *data_far);
181: void vgahw_get_all_palette_reg(u16 seg, u8 *data_far);
182: void vgahw_toggle_intensity(u8 flag);
183: void vgahw_select_video_dac_color_page(u8 flag, u8 data);
184: void vgahw_read_video_dac_state(u8 *pmode, u8 *curpage);
185: void vgahw_set_dac_regs(u16 seg, u8 *data_far, u8 start, int count);
186: void vgahw_get_dac_regs(u16 seg, u8 *data_far, u8 start, int count);
187: void vgahw_set_pel_mask(u8 val);
1.1.1.2 ! root 188: u8 vgahw_get_pel_mask(void);
1.1 root 189: void vgahw_save_dac_state(u16 seg, struct saveDACcolors *info);
190: void vgahw_restore_dac_state(u16 seg, struct saveDACcolors *info);
191: void vgahw_sequ_write(u8 index, u8 value);
192: void vgahw_grdc_write(u8 index, u8 value);
193: void vgahw_set_text_block_specifier(u8 spec);
1.1.1.2 ! root 194: void get_font_access(void);
! 195: void release_font_access(void);
1.1 root 196: void vgahw_set_cursor_shape(u8 start, u8 end);
197: void vgahw_set_active_page(u16 address);
198: void vgahw_set_cursor_pos(u16 address);
199: void vgahw_set_scan_lines(u8 lines);
1.1.1.2 ! root 200: u16 vgahw_get_vde(void);
1.1 root 201: void vgahw_save_state(u16 seg, struct saveVideoHardware *info);
202: void vgahw_restore_state(u16 seg, struct saveVideoHardware *info);
203: void vgahw_set_mode(struct VideoParam_s *vparam_g);
204: void vgahw_enable_video_addressing(u8 disable);
1.1.1.2 ! root 205: void vgahw_init(void);
1.1 root 206:
207: // clext.c
208: void cirrus_set_video_mode(u8 mode);
1.1.1.2 ! root 209: void cirrus_init(void);
1.1 root 210:
211: // vbe.c -- not implemented yet.
212: #define VBE_DISPI_DISABLED 0x00
213: void dispi_set_enable(int enable);
1.1.1.2 ! root 214: void vbe_init(void);
! 215: int vbe_has_vbe_display(void);
1.1 root 216:
217: #endif // vgatables.h
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