332 lines
10 KiB
C
332 lines
10 KiB
C
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/*
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* XFree86 vbe module
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* Copyright 2000 Egbert Eich
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*
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* The mode query/save/set/restore functions from the vesa driver
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* have been moved here.
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* Copyright (c) 2000 by Conectiva S.A. (http://www.conectiva.com)
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* Authors: Paulo César Pereira de Andrade <pcpa@conectiva.com.br>
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*/
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#ifndef _VBE_H
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#define _VBE_H
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#include "xf86int10.h"
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#include "xf86DDC.h"
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typedef enum {
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DDC_UNCHECKED,
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DDC_NONE,
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DDC_1,
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DDC_2,
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DDC_1_2
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}
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ddc_lvl;
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typedef struct {
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xf86Int10InfoPtr pInt10;
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int version;
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pointer memory;
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int real_mode_base;
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int num_pages;
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Bool init_int10;
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ddc_lvl ddc;
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Bool ddc_blank;
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} vbeInfoRec, *vbeInfoPtr;
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#define VBE_VERSION_MAJOR(x) *((CARD8*)(&x) + 1)
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#define VBE_VERSION_MINOR(x) (CARD8)(x)
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vbeInfoPtr VBEInit(xf86Int10InfoPtr pInt, int entityIndex);
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vbeInfoPtr VBEExtendedInit(xf86Int10InfoPtr pInt, int entityIndex, int Flags);
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void vbeFree(vbeInfoPtr pVbe);
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xf86MonPtr vbeDoEDID(vbeInfoPtr pVbe, pointer pDDCModule);
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#pragma pack(1)
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typedef struct vbeControllerInfoBlock {
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CARD8 VbeSignature[4];
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CARD16 VbeVersion;
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CARD32 OemStringPtr;
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CARD8 Capabilities[4];
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CARD32 VideoModePtr;
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CARD16 TotalMem;
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CARD16 OemSoftwareRev;
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CARD32 OemVendorNamePtr;
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CARD32 OemProductNamePtr;
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CARD32 OemProductRevPtr;
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CARD8 Scratch[222];
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CARD8 OemData[256];
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} vbeControllerInfoRec, *vbeControllerInfoPtr;
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#if defined(__GNUC__) || defined(__USLC__) || defined(__SUNPRO_C)
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#pragma pack() /* All GCC versions recognise this syntax */
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#else
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#pragma pack(0)
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#endif
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#ifndef __GNUC__
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#define __attribute__(a)
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#endif
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typedef struct _VbeInfoBlock VbeInfoBlock;
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typedef struct _VbeModeInfoBlock VbeModeInfoBlock;
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typedef struct _VbeCRTCInfoBlock VbeCRTCInfoBlock;
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/*
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* INT 0
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*/
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struct _VbeInfoBlock {
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/* VESA 1.2 fields */
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CARD8 VESASignature[4]; /* VESA */
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CARD16 VESAVersion; /* Higher byte major, lower byte minor */
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/*CARD32*/char *OEMStringPtr; /* Pointer to OEM string */
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CARD8 Capabilities[4]; /* Capabilities of the video environment */
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/*CARD32*/CARD16 *VideoModePtr; /* pointer to supported Super VGA modes */
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CARD16 TotalMemory; /* Number of 64kb memory blocks on board */
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/* if not VESA 2, 236 scratch bytes follow (256 bytes total size) */
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/* VESA 2 fields */
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CARD16 OemSoftwareRev; /* VBE implementation Software revision */
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/*CARD32*/char *OemVendorNamePtr; /* Pointer to Vendor Name String */
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/*CARD32*/char *OemProductNamePtr; /* Pointer to Product Name String */
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/*CARD32*/char *OemProductRevPtr; /* Pointer to Product Revision String */
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CARD8 Reserved[222]; /* Reserved for VBE implementation */
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CARD8 OemData[256]; /* Data Area for OEM Strings */
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} __attribute__((packed));
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/* Return Super VGA Information */
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VbeInfoBlock *VBEGetVBEInfo(vbeInfoPtr pVbe);
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void VBEFreeVBEInfo(VbeInfoBlock *block);
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/*
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* INT 1
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*/
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struct _VbeModeInfoBlock {
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CARD16 ModeAttributes; /* mode attributes */
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CARD8 WinAAttributes; /* window A attributes */
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CARD8 WinBAttributes; /* window B attributes */
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CARD16 WinGranularity; /* window granularity */
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CARD16 WinSize; /* window size */
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CARD16 WinASegment; /* window A start segment */
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CARD16 WinBSegment; /* window B start segment */
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CARD32 WinFuncPtr; /* real mode pointer to window function */
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CARD16 BytesPerScanline; /* bytes per scanline */
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/* Mandatory information for VBE 1.2 and above */
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CARD16 XResolution; /* horizontal resolution in pixels or characters */
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CARD16 YResolution; /* vertical resolution in pixels or characters */
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CARD8 XCharSize; /* character cell width in pixels */
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CARD8 YCharSize; /* character cell height in pixels */
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CARD8 NumberOfPlanes; /* number of memory planes */
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CARD8 BitsPerPixel; /* bits per pixel */
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CARD8 NumberOfBanks; /* number of banks */
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CARD8 MemoryModel; /* memory model type */
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CARD8 BankSize; /* bank size in KB */
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CARD8 NumberOfImages; /* number of images */
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CARD8 Reserved; /* 1 */ /* reserved for page function */
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/* Direct color fields (required for direct/6 and YUV/7 memory models) */
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CARD8 RedMaskSize; /* size of direct color red mask in bits */
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CARD8 RedFieldPosition; /* bit position of lsb of red mask */
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CARD8 GreenMaskSize; /* size of direct color green mask in bits */
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CARD8 GreenFieldPosition; /* bit position of lsb of green mask */
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CARD8 BlueMaskSize; /* size of direct color blue mask in bits */
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CARD8 BlueFieldPosition; /* bit position of lsb of blue mask */
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CARD8 RsvdMaskSize; /* size of direct color reserved mask in bits */
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CARD8 RsvdFieldPosition; /* bit position of lsb of reserved mask */
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CARD8 DirectColorModeInfo; /* direct color mode attributes */
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/* Mandatory information for VBE 2.0 and above */
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CARD32 PhysBasePtr; /* physical address for flat memory frame buffer */
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CARD32 Reserved32; /* 0 */ /* Reserved - always set to 0 */
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CARD16 Reserved16; /* 0 */ /* Reserved - always set to 0 */
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/* Mandatory information for VBE 3.0 and above */
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CARD16 LinBytesPerScanLine; /* bytes per scan line for linear modes */
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CARD8 BnkNumberOfImagePages; /* number of images for banked modes */
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CARD8 LinNumberOfImagePages; /* number of images for linear modes */
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CARD8 LinRedMaskSize; /* size of direct color red mask (linear modes) */
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CARD8 LinRedFieldPosition; /* bit position of lsb of red mask (linear modes) */
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CARD8 LinGreenMaskSize; /* size of direct color green mask (linear modes) */
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CARD8 LinGreenFieldPosition; /* bit position of lsb of green mask (linear modes) */
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CARD8 LinBlueMaskSize; /* size of direct color blue mask (linear modes) */
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CARD8 LinBlueFieldPosition; /* bit position of lsb of blue mask (linear modes) */
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CARD8 LinRsvdMaskSize; /* size of direct color reserved mask (linear modes) */
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CARD8 LinRsvdFieldPosition; /* bit position of lsb of reserved mask (linear modes) */
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CARD32 MaxPixelClock; /* maximum pixel clock (in Hz) for graphics mode */
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CARD8 Reserved2[189]; /* remainder of VbeModeInfoBlock */
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} __attribute__((packed));
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/* Return VBE Mode Information */
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VbeModeInfoBlock *VBEGetModeInfo(vbeInfoPtr pVbe, int mode);
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void VBEFreeModeInfo(VbeModeInfoBlock *block);
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/*
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* INT2
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*/
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#define CRTC_DBLSCAN (1<<0)
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#define CRTC_INTERLACE (1<<1)
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#define CRTC_NHSYNC (1<<2)
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#define CRTC_NVSYNC (1<<3)
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struct _VbeCRTCInfoBlock {
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CARD16 HorizontalTotal; /* Horizontal total in pixels */
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CARD16 HorizontalSyncStart; /* Horizontal sync start in pixels */
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CARD16 HorizontalSyncEnd; /* Horizontal sync end in pixels */
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CARD16 VerticalTotal; /* Vertical total in lines */
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CARD16 VerticalSyncStart; /* Vertical sync start in lines */
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CARD16 VerticalSyncEnd; /* Vertical sync end in lines */
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CARD8 Flags; /* Flags (Interlaced, Double Scan etc) */
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CARD32 PixelClock; /* Pixel clock in units of Hz */
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CARD16 RefreshRate; /* Refresh rate in units of 0.01 Hz */
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CARD8 Reserved[40]; /* remainder of ModeInfoBlock */
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} __attribute__((packed));
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/* VbeCRTCInfoBlock is in the VESA 3.0 specs */
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Bool VBESetVBEMode(vbeInfoPtr pVbe, int mode, VbeCRTCInfoBlock *crtc);
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/*
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* INT 3
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*/
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Bool VBEGetVBEMode(vbeInfoPtr pVbe, int *mode);
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/*
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* INT 4
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*/
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/* Save/Restore Super VGA video state */
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/* function values are (values stored in VESAPtr):
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* 0 := query & allocate amount of memory to save state
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* 1 := save state
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* 2 := restore state
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*
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* function 0 called automatically if function 1 called without
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* a previous call to function 0.
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*/
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typedef enum {
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MODE_QUERY,
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MODE_SAVE,
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MODE_RESTORE
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} vbeSaveRestoreFunction;
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Bool
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VBESaveRestore(vbeInfoPtr pVbe, vbeSaveRestoreFunction fuction,
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pointer *memory, int *size, int *real_mode_pages);
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/*
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* INT 5
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*/
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Bool
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VBEBankSwitch(vbeInfoPtr pVbe, unsigned int iBank, int window);
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/*
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* INT 6
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*/
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typedef enum {
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SCANWID_SET,
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SCANWID_GET,
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SCANWID_SET_BYTES,
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SCANWID_GET_MAX
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} vbeScanwidthCommand;
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#define VBESetLogicalScanline(pVbe, width) \
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VBESetGetLogicalScanlineLength(pVbe, SCANWID_SET, width, \
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NULL, NULL, NULL)
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#define VBESetLogicalScanlineBytes(pVbe, width) \
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VBESetGetLogicalScanlineLength(pVbe, SCANWID_SET_BYTES, width, \
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NULL, NULL, NULL)
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#define VBEGetLogicalScanline(pVbe, pixels, bytes, max) \
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VBESetGetLogicalScanlineLength(pVbe, SCANWID_GET, 0, \
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pixels, bytes, max)
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#define VBEGetMaxLogicalScanline(pVbe, pixels, bytes, max) \
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VBESetGetLogicalScanlineLength(pVbe, SCANWID_GET_MAX, 0, \
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pixels, bytes, max)
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Bool VBESetGetLogicalScanlineLength(vbeInfoPtr pVbe,
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vbeScanwidthCommand command, int width,
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int *pixels, int *bytes, int *max);
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/*
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* INT 7
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*/
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/* 16 bit code */
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Bool VBESetDisplayStart(vbeInfoPtr pVbe, int x, int y, Bool wait_retrace);
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Bool VBEGetDisplayStart(vbeInfoPtr pVbe, int *x, int *y);
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/*
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* INT 8
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*/
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/* if bits is 0, then it is a GET */
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int VBESetGetDACPaletteFormat(vbeInfoPtr pVbe, int bits);
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/*
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* INT 9
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*/
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/*
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* If getting a palette, the data argument is not used. It will return
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* the data.
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* If setting a palette, it will return the pointer received on success,
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* NULL on failure.
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*/
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CARD32 *VBESetGetPaletteData(vbeInfoPtr pVbe, Bool set, int first, int num,
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CARD32 *data, Bool secondary, Bool wait_retrace);
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#define VBEFreePaletteData(data) xfree(data)
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/*
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* INT A
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*/
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typedef struct _VBEpmi {
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int seg_tbl;
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int tbl_off;
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int tbl_len;
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} VBEpmi;
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VBEpmi *VBEGetVBEpmi(vbeInfoPtr pVbe);
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#define VESAFreeVBEpmi(pmi) xfree(pmi)
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/* high level helper functions */
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typedef struct _vbeModeInfoRec {
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int width;
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int height;
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int bpp;
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int n;
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struct _vbeModeInfoRec *next;
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} vbeModeInfoRec, *vbeModeInfoPtr;
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vbeModeInfoPtr VBEBuildVbeModeList(vbeInfoPtr pVbe,
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VbeInfoBlock *vbe);
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unsigned short VBECalcVbeModeIndex(vbeModeInfoPtr m,
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DisplayModePtr mode, int bpp);
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typedef struct {
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CARD8 *state;
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CARD8 *pstate;
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int statePage;
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int stateSize;
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int stateMode;
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} vbeSaveRestoreRec, *vbeSaveRestorePtr;
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void
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VBEVesaSaveRestore(vbeInfoPtr pVbe, vbeSaveRestorePtr vbe_sr,
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vbeSaveRestoreFunction function);
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int VBEGetPixelClock(vbeInfoPtr pVbe, int mode, int Clock);
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Bool VBEDPMSSet(vbeInfoPtr pVbe, int mode);
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#endif
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