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Diffstat (limited to 'osdep/vbelib.h')
| -rw-r--r-- | osdep/vbelib.h | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/osdep/vbelib.h b/osdep/vbelib.h new file mode 100644 index 0000000000..c1ae08beb8 --- /dev/null +++ b/osdep/vbelib.h @@ -0,0 +1,227 @@ +/* + 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 |