1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/*
VESA VBE 2.0 compatible structures and definitions.
You can redistribute this file under terms and conditions
of GNU General Public licence v2.
Written by Nick Kurshev <nickols_k@mail.ru>
*/
#ifndef __VESA_VBELIB_INCLUDED__
#define __VESA_VBELIB_INCLUDED__ 1
/* Note: every pointer within structures is 32-bit protected mode pointer.
So you don't need to convert it from real mode. */
typedef struct tagFarPtr
{
unsigned short off;
unsigned short seg;
}FarPtr;
#define VBE_DAC_8BIT (1 << 0)
#define VBE_NONVGA_CRTC (1 << 1)
#define VBE_SNOWED_RAMDAC (1 << 2)
#define VBE_STEREOSCOPIC (1 << 3)
#define VBE_STEREO_EVC (1 << 4)
struct VbeInfoBlock {
char VESASignature[4]; /* 'VESA' 4 byte signature */
short VESAVersion; /* VBE version number */
char * OemStringPtr; /* Pointer to OEM string */
long Capabilities; /* Capabilities of video card */
unsigned short* VideoModePtr; /* Pointer to supported modes */
short TotalMemory; /* Number of 64kb memory blocks */
/* VBE 2.0 and above */
short OemSoftwareRev;
char * OemVendorNamePtr;
char * OemProductNamePtr;
char * OemProductRevPtr;
char reserved[222];
char OemData[256]; /* Pad to 512 byte block size */
}__attribute__ ((packed));
static inline FarPtr VirtToPhys(void *ptr)
{
FarPtr retval;
retval.seg = ((unsigned long)ptr) >> 4;
retval.off = ((unsigned long)ptr) & 0x0f;
return retval;
}
static inline unsigned short VirtToPhysSeg(void *ptr)
{
return ((unsigned long)ptr) >> 4;
}
static inline unsigned short VirtToPhysOff(void *ptr)
{
return ((unsigned long)ptr) & 0x0f;
}
static inline void * PhysToVirt(FarPtr ptr)
{
return (void *)((ptr.seg << 4) | ptr.off);
}
static inline void * PhysToVirtSO(unsigned short seg,unsigned short off)
{
return (void *)((seg << 4) | off);
}
#define MODE_ATTR_MODE_SUPPORTED (1 << 0)
#define MODE_ATTR_TTY (1 << 2)
#define MODE_ATTR_COLOR (1 << 3)
#define MODE_ATTR_GRAPHICS (1 << 4)
#define MODE_ATTR_NOT_VGA (1 << 5)
#define MODE_ATTR_NOT_WINDOWED (1 << 6)
#define MODE_ATTR_LINEAR (1 << 7)
#define MODE_ATTR_DOUBLESCAN (1 << 8)
#define MODE_ATTR_INTERLACE (1 << 9)
#define MODE_ATTR_TRIPLEBUFFER (1 << 10)
#define MODE_ATTR_STEREOSCOPIC (1 << 11)
#define MODE_ATTR_DUALDISPLAY (1 << 12)
#define MODE_WIN_RELOCATABLE (1 << 0)
#define MODE_WIN_READABLE (1 << 1)
#define MODE_WIN_WRITEABLE (1 << 2)
/* SuperVGA mode information block */
struct VesaModeInfoBlock {
unsigned short ModeAttributes; /* 00: Mode attributes */
unsigned char WinAAttributes; /* 02: Window A attributes */
unsigned char WinBAttributes; /* 03: Window B attributes */
unsigned short WinGranularity; /* 04: Window granularity in k */
unsigned short WinSize; /* 06: Window size in k */
unsigned short WinASegment; /* 08: Window A segment */
unsigned short WinBSegment; /* 0A: Window B segment */
FarPtr WinFuncPtr; /* 0C: 16-bit far pointer to window function */
unsigned short BytesPerScanLine; /* 10: Bytes per scanline */
/* VBE 1.2 and above */
unsigned short XResolution; /* 12: Horizontal resolution */
unsigned short YResolution; /* 14: Vertical resolution */
unsigned char XCharSize; /* 16: Character cell width */
unsigned char YCharSize; /* 17: Character cell height */
unsigned char NumberOfPlanes; /* 18: Number of memory planes */
unsigned char BitsPerPixel; /* 19: Bits per pixel */
unsigned char NumberOfBanks; /* 1A: Number of CGA style banks */
unsigned char MemoryModel; /* 1B: Memory model type */
unsigned char BankSize; /* 1C: Size of CGA style banks */
unsigned char NumberOfImagePages; /* 1D: Number of images pages */
unsigned char res1; /* 1E: Reserved */
/* Direct Color fields (required for direct/6 and YUV/7 memory models) */
unsigned char RedMaskSize; /* 1F: Size of direct color red mask */
unsigned char RedFieldPosition; /* 20: Bit posn of lsb of red mask */
unsigned char GreenMaskSize; /* 21: Size of direct color green mask */
unsigned char GreenFieldPosition; /* 22: Bit posn of lsb of green mask */
unsigned char BlueMaskSize; /* 23: Size of direct color blue mask */
unsigned char BlueFieldPosition; /* 24: Bit posn of lsb of blue mask */
unsigned char RsvdMaskSize; /* 25: Size of direct color res mask */
unsigned char RsvdFieldPosition; /* 26: Bit posn of lsb of res mask */
unsigned char DirectColorModeInfo; /* 27: Direct color mode attributes */
/* VBE 2.0 and above */
unsigned long PhysBasePtr; /* 28: physical address for flat memory frame buffer. (Should be converted to linear before using) */
unsigned short res3[3]; /* 2C: Reserved - always set to 0 */
/* VBE 3.0 and above */
unsigned short LinBytesPerScanLine; /* 32: bytes per scan line for linear modes */
unsigned char BnkNumberOfImagePages;/* 34: number of images for banked modes */
unsigned char LinNumberOfImagePages;/* 35: number of images for linear modes */
unsigned char LinRedMaskSize; /* 36: size of direct color red mask (linear modes) */
unsigned char LinRedFieldPosition; /* 37: bit position of lsb of red mask (linear modes) */
unsigned char LinGreenMaskSize; /* 38: size of direct color green mask (linear modes) */
unsigned char LinGreenFieldPosition;/* 39: bit position of lsb of green mask (linear modes) */
unsigned char LinBlueMaskSize; /* 40: size of direct color blue mask (linear modes) */
unsigned char LinBlueFieldPosition; /* 41: bit position of lsb of blue mask (linear modes) */
unsigned char LinRsvdMaskSize; /* 42: size of direct color reserved mask (linear modes) */
unsigned char LinRsvdFieldPosition; /* 43: bit position of lsb of reserved mask (linear modes) */
unsigned long MaxPixelClock; /* 44: maximum pixel clock (in Hz) for graphics mode */
char res4[189]; /* 48: remainder of ModeInfoBlock */
}__attribute__ ((packed));
typedef enum {
memText= 0,
memCGA = 1,
memHercules = 2,
memPL = 3, /* Planar memory model */
memPK = 4, /* Packed pixel memory model */
mem256 = 5,
memRGB = 6, /* Direct color RGB memory model */
memYUV = 7, /* Direct color YUV memory model */
} memModels;
struct VesaCRTCInfoBlock {
unsigned short hTotal; /* Horizontal total in pixels */
unsigned short hSyncStart; /* Horizontal sync start in pixels */
unsigned short hSyncEnd; /* Horizontal sync end in pixels */
unsigned short vTotal; /* Vertical total in lines */
unsigned short vSyncStart; /* Vertical sync start in lines */
unsigned short vSyncEnd; /* Vertical sync end in lines */
unsigned char Flags; /* Flags (Interlaced, Double Scan etc) */
unsigned long PixelClock; /* Pixel clock in units of Hz */
unsigned short RefreshRate;/* Refresh rate in units of 0.01 Hz*/
unsigned char Reserved[40];/* remainder of CRTCInfoBlock*/
}__attribute__ ((packed));
#define VESA_CRTC_DOUBLESCAN 0x01
#define VESA_CRTC_INTERLACED 0x02
#define VESA_CRTC_HSYNC_NEG 0x04
#define VESA_CRTC_VSYNC_NEG 0x08
#define VESA_MODE_CRTC_REFRESH (1 << 11)
#define VESA_MODE_USE_LINEAR (1 << 14)
#define VESA_MODE_NOT_CLEAR (1 << 15)
/* This will contain accesible 32-bit protmode pointers */
struct VesaProtModeInterface
{
void (*SetWindowCall)(void);
void (*SetDisplayStart)(void);
void (*SetPaletteData)(void);
unsigned short * iopl_ports;
};
/*
All functions below return:
0 if succesful
0xffff if vm86 syscall error occurs
0x4fxx if VESA error occurs
*/
#define VBE_OK 0
#define VBE_VM86_FAIL -1
#define VBE_OUT_OF_DOS_MEM -2
#define VBE_OUT_OF_MEM -3
#define VBE_BROKEN_BIOS -4
#define VBE_VESA_ERROR_MASK 0x004f
#define VBE_VESA_ERRCODE_MASK 0xff00
extern int vbeInit( void );
extern int vbeDestroy( void );
extern int vbeGetControllerInfo(struct VbeInfoBlock *);
extern int vbeGetModeInfo(unsigned mode,struct VesaModeInfoBlock *);
extern int vbeSetMode(unsigned mode,struct VesaCRTCInfoBlock *);
extern int vbeGetMode(unsigned *mode);
extern int vbeGetPixelClock(unsigned *mode,unsigned *pixel_clock);
extern int vbeSaveState(void **data); /* note never copy this data */
extern int vbeRestoreState(void *data);
extern int vbeGetWindow(unsigned *win_num); /* win_A=0 or win_B=1 */
extern int vbeSetWindow(unsigned win_num,unsigned win_gran);
extern int vbeGetScanLineLength(unsigned *num_pixels,unsigned *num_bytes);
extern int vbeGetMaxScanLines(unsigned *num_pixels,unsigned *num_bytes, unsigned *num_lines);
extern int vbeSetScanLineLength(unsigned num_pixels);
extern int vbeSetScanLineLengthB(unsigned num_bytes);
extern int vbeGetDisplayStart(unsigned *pixel_num,unsigned *scan_line);
extern int vbeSetDisplayStart(unsigned long offset, int vsync);
extern int vbeSetScheduledDisplayStart(unsigned long offset, int vsync);
/*
Func 0x08-0x09:
Support of palette currently is not implemented.
*/
extern int vbeGetProtModeInfo(struct VesaProtModeInterface *);
/* Standard VGA stuff */
int vbeWriteString(int x, int y, int attr, char *str);
/* Misc stuff (For portability only) */
void * vbeMapVideoBuffer(unsigned long phys_addr,unsigned long size);
void vbeUnmapVideoBuffer(unsigned long linear_addr,unsigned long size);
#endif
|
