svn merge -r588:HEAD ^/branches/released .

1 files changed, 1145 insertions, 1145 deletions

diff --git a/xorg-server/hw/xfree86/vbe/vbe.c b/xorg-server/hw/xfree86/vbe/vbe.c
index 26f5911d5..bb88b86cf 100644
--- a/xorg-server/hw/xfree86/vbe/vbe.c
+++ b/xorg-server/hw/xfree86/vbe/vbe.c
@@ -1,1145 +1,1145 @@
-
-/*
- *                   XFree86 vbe module
- *               Copyright 2000 Egbert Eich
- *
- * The mode query/save/set/restore functions from the vesa driver 
- * have been moved here.
- * Copyright (c) 2000 by Conectiva S.A. (http://www.conectiva.com)
- * Authors: Paulo César Pereira de Andrade <pcpa@conectiva.com.br> 
- */
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include <string.h>
-
-#include "xf86.h"
-#include "vbe.h"
-#include <X11/Xarch.h>
-#include <X11/extensions/dpmsconst.h>
-
-#define VERSION(x) VBE_VERSION_MAJOR(x),VBE_VERSION_MINOR(x)
-
-#if X_BYTE_ORDER == X_LITTLE_ENDIAN
-#define B_O16(x)  (x) 
-#define B_O32(x)  (x)
-#else
-#define B_O16(x)  ((((x) & 0xff) << 8) | (((x) & 0xff) >> 8))
-#define B_O32(x)  ((((x) & 0xff) << 24) | (((x) & 0xff00) << 8) \
-                  | (((x) & 0xff0000) >> 8) | (((x) & 0xff000000) >> 24))
-#endif
-#define L_ADD(x)  (B_O32(x) & 0xffff) + ((B_O32(x) >> 12) & 0xffff00)
-
-#define FARP(p)		(((unsigned)(p & 0xffff0000) >> 12) | (p & 0xffff))
-#define R16(v)		((v) & 0xffff)
-
-static unsigned char * vbeReadEDID(vbeInfoPtr pVbe);
-static Bool vbeProbeDDC(vbeInfoPtr pVbe);
-
-static const char vbeVersionString[] = "VBE2";
-
-vbeInfoPtr
-VBEInit(xf86Int10InfoPtr pInt, int entityIndex)
-{
-    return VBEExtendedInit(pInt, entityIndex, 0);
-}
-
-vbeInfoPtr
-VBEExtendedInit(xf86Int10InfoPtr pInt, int entityIndex, int Flags)
-{
-    int RealOff;
-    pointer page = NULL;
-    ScrnInfoPtr pScrn = xf86FindScreenForEntity(entityIndex);
-    vbeControllerInfoPtr vbe = NULL;
-    Bool init_int10 = FALSE;
-    vbeInfoPtr vip = NULL;
-    int screen;
-
-    if (!pScrn) return NULL;
-    screen = pScrn->scrnIndex;
-    
-    if (!pInt) {
-	if (!xf86LoadSubModule(pScrn, "int10"))
-	    goto error;
-
-	xf86DrvMsg(screen,X_INFO,"initializing int10\n");
-	pInt = xf86ExtendedInitInt10(entityIndex,Flags);
-	if (!pInt)
-	    goto error;
-	init_int10 = TRUE;
-    }
-    
-    page = xf86Int10AllocPages(pInt,1,&RealOff);
-    if (!page) goto error;
-    vbe = (vbeControllerInfoPtr) page;    
-    memcpy(vbe->VbeSignature,vbeVersionString,4);
-
-    pInt->ax = 0x4F00;
-    pInt->es = SEG_ADDR(RealOff);
-    pInt->di = SEG_OFF(RealOff);
-    pInt->num = 0x10;
-    
-    xf86ExecX86int10(pInt);
-
-    if ((pInt->ax & 0xff) != 0x4f) {
-	xf86DrvMsgVerb(screen,X_INFO,3,"VESA BIOS not detected\n");
-	goto error;
-    }
-    
-    switch (pInt->ax & 0xff00) {
-    case 0:
-	xf86DrvMsg(screen,X_INFO,"VESA BIOS detected\n");
-	break;
-    case 0x100:
-	xf86DrvMsg(screen,X_INFO,"VESA BIOS function failed\n");
-	goto error;
-    case 0x200:
-	xf86DrvMsg(screen,X_INFO,"VESA BIOS not supported\n");
-	goto error;
-    case 0x300:
-	xf86DrvMsg(screen,X_INFO,"VESA BIOS not supported in current mode\n");
-	goto error;
-    default:
-	xf86DrvMsg(screen,X_INFO,"Invalid\n");
-	goto error;
-    }
-    
-    xf86DrvMsgVerb(screen, X_INFO, 4,
-		"VbeVersion is %d, OemStringPtr is 0x%08lx,\n"
-		"\tOemVendorNamePtr is 0x%08lx, OemProductNamePtr is 0x%08lx,\n"
-		"\tOemProductRevPtr is 0x%08lx\n",
-		vbe->VbeVersion, (unsigned long)vbe->OemStringPtr,
-		(unsigned long)vbe->OemVendorNamePtr,
-		(unsigned long)vbe->OemProductNamePtr,
-		(unsigned long)vbe->OemProductRevPtr);
-
-    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE Version %i.%i\n",
-		   VERSION(vbe->VbeVersion));
-    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE Total Mem: %i kB\n",
-		   vbe->TotalMem * 64);
-    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM: %s\n",
-		   (CARD8*)xf86int10Addr(pInt,L_ADD(vbe->OemStringPtr)));
-    
-    if (B_O16(vbe->VbeVersion) >= 0x200) {
-	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM Software Rev: %i.%i\n",
-		    VERSION(vbe->OemSoftwareRev));
-	if (vbe->OemVendorNamePtr)
-	    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM Vendor: %s\n",
-		    (CARD8*)xf86int10Addr(pInt,L_ADD(vbe->OemVendorNamePtr)));
-	if (vbe->OemProductNamePtr)
-	    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM Product: %s\n",
-		    (CARD8*)xf86int10Addr(pInt,L_ADD(vbe->OemProductNamePtr)));
-	if (vbe->OemProductRevPtr)
-	    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM Product Rev: %s\n",
-		    (CARD8*)xf86int10Addr(pInt,L_ADD(vbe->OemProductRevPtr)));
-    }
-    vip = (vbeInfoPtr)xnfalloc(sizeof(vbeInfoRec));
-    vip->version = B_O16(vbe->VbeVersion);
-    vip->pInt10 = pInt;
-    vip->ddc = DDC_UNCHECKED;
-    vip->memory = page;
-    vip->real_mode_base = RealOff;
-    vip->num_pages = 1;
-    vip->init_int10 = init_int10;
-
-    return vip;
-
- error:
-    if (page)
-	xf86Int10FreePages(pInt, page, 1);
-    if (init_int10)
-	xf86FreeInt10(pInt);
-    return NULL;
-}
-
-void
-vbeFree(vbeInfoPtr pVbe)
-{
-    if (!pVbe)
-	return;
-
-    xf86Int10FreePages(pVbe->pInt10,pVbe->memory,pVbe->num_pages);
-    /* If we have initalized int10 we ought to free it, too */
-    if (pVbe->init_int10) 
-	xf86FreeInt10(pVbe->pInt10);
-    xfree(pVbe);
-    return;
-}
-
-static Bool
-vbeProbeDDC(vbeInfoPtr pVbe)
-{
-    char *ddc_level;
-    int screen = pVbe->pInt10->scrnIndex;
-    
-    if (pVbe->ddc == DDC_NONE)
-	return FALSE;
-    if (pVbe->ddc != DDC_UNCHECKED)
-	return TRUE;
-
-    pVbe->pInt10->ax = 0x4F15;
-    pVbe->pInt10->bx = 0;
-    pVbe->pInt10->cx = 0;
-    pVbe->pInt10->es = 0;
-    pVbe->pInt10->di = 0;
-    pVbe->pInt10->num = 0x10;
-
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if ((pVbe->pInt10->ax & 0xff) != 0x4f) {
-        xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC not supported\n");
-	pVbe->ddc = DDC_NONE;
-	return FALSE;
-    }
-
-    switch ((pVbe->pInt10->ax >> 8) & 0xff) {
-    case 0:
-	xf86DrvMsg(screen,X_INFO,"VESA VBE DDC supported\n");
-	switch (pVbe->pInt10->bx & 0x3) {
-	case 0:
-  	    ddc_level = " none"; 
-	    pVbe->ddc = DDC_NONE;
-	    break;
-	case 1:
-  	    ddc_level = " 1";
-	    pVbe->ddc = DDC_1;
-	    break;
-	case 2:
-  	    ddc_level = " 2"; 
-	    pVbe->ddc = DDC_2;
-	    break;
-	case 3:
-  	    ddc_level = " 1 + 2"; 
-	    pVbe->ddc = DDC_1_2;
-	    break;
-	default:
- 	    ddc_level = "";
-	    pVbe->ddc = DDC_NONE;
-	    break;
-	}
-  	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC Level%s\n",ddc_level); 
-  	if (pVbe->pInt10->bx & 0x4) {
-    	    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC Screen blanked" 
-    			"for data transfer\n"); 
-    	    pVbe->ddc_blank = TRUE;
-    	}  else
-    	    pVbe->ddc_blank = FALSE;
-	    
-  	xf86DrvMsgVerb(screen,X_INFO,3,
-		       "VESA VBE DDC transfer in appr. %x sec.\n", 
-		       (pVbe->pInt10->bx >> 8) & 0xff); 
-    }
-    
-    return TRUE; 
-}
-
-typedef enum {
-  VBEOPT_NOVBE,
-    VBEOPT_NODDC
-} VBEOpts;
-
-static const OptionInfoRec VBEOptions[] = {
-    { VBEOPT_NOVBE,	"NoVBE",	OPTV_BOOLEAN,	{0},	FALSE },
-    { VBEOPT_NODDC,	"NoDDC",	OPTV_BOOLEAN,	{0},	FALSE },
-    { -1,		NULL,		OPTV_NONE,	{0},	FALSE },
-};
-
-static unsigned char *
-vbeReadEDID(vbeInfoPtr pVbe)
-{
-    int RealOff = pVbe->real_mode_base;
-    pointer page = pVbe->memory;
-    unsigned char *tmp = NULL;
-    Bool novbe = FALSE;
-    Bool noddc = FALSE;
-    int screen = pVbe->pInt10->scrnIndex;
-    OptionInfoPtr options;
-
-    if (!page) return NULL;
-
-    options = xnfalloc(sizeof(VBEOptions));
-    (void)memcpy(options, VBEOptions, sizeof(VBEOptions));
-    xf86ProcessOptions(screen, xf86Screens[screen]->options, options);
-    xf86GetOptValBool(options, VBEOPT_NOVBE, &novbe);
-    xf86GetOptValBool(options, VBEOPT_NODDC, &noddc);
-    xfree(options);
-    if (novbe || noddc) return NULL;
-    
-    if (!vbeProbeDDC(pVbe)) goto error;
-
-    memset(page,0,sizeof(vbeInfoPtr));
-    strcpy(page,vbeVersionString);
-
-    pVbe->pInt10->ax = 0x4F15;
-    pVbe->pInt10->bx = 0x01;
-    pVbe->pInt10->cx = 0;
-    pVbe->pInt10->dx = 0;
-    pVbe->pInt10->es = SEG_ADDR(RealOff);
-    pVbe->pInt10->di = SEG_OFF(RealOff);
-    pVbe->pInt10->num = 0x10;
-
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if ((pVbe->pInt10->ax & 0xff) != 0x4f) {
-        xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC invalid\n");
-	goto error;
-    }
-    switch (pVbe->pInt10->ax & 0xff00) {
-    case 0x0:
-	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC read successfully\n");
-  	tmp = (unsigned char *)xnfalloc(128); 
-  	memcpy(tmp,page,128); 
-	break;
-    case 0x100:
-	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC read failed\n");	
-	break;
-    default:
-	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC unkown failure %i\n",
-		       pVbe->pInt10->ax & 0xff00);
-	break;
-    }
-    
- error:
-    return tmp;
-}
-
-xf86MonPtr
-vbeDoEDID(vbeInfoPtr pVbe, pointer pDDCModule)
-{
-    xf86MonPtr    pMonitor;
-    pointer       pModule;
-    unsigned char *DDC_data = NULL;
-    
-    if (!pVbe) return NULL;
-    if (pVbe->version < 0x200)
-	return NULL;
-
-    if (!(pModule = pDDCModule)) {
-	pModule =
-	    xf86LoadSubModule(xf86Screens[pVbe->pInt10->scrnIndex], "ddc");
-	if (!pModule)
-	    return NULL;
-    }
-        
-    DDC_data = vbeReadEDID(pVbe);
-
-    if (!DDC_data) 
-	return NULL;
-    
-    pMonitor = xf86InterpretEDID(pVbe->pInt10->scrnIndex, DDC_data);
-
-    if (!pDDCModule)
-        xf86UnloadSubModule(pModule);
-    return pMonitor;
-}
-
-#define GET_UNALIGNED2(x) \
-            ((*(CARD16*)(x)) | (*(((CARD16*)(x) + 1))) << 16)
-
-VbeInfoBlock *
-VBEGetVBEInfo(vbeInfoPtr pVbe)
-{
-    VbeInfoBlock *block = NULL;
-    int i, pStr, pModes;
-    char *str;
-    CARD16 major, *modes;
-
-    bzero(pVbe->memory, sizeof(VbeInfoBlock));
-
-    /*
-    Input:
-	AH    := 4Fh	Super VGA support
-	AL    := 00h	Return Super VGA information
-	ES:DI := Pointer to buffer
-
-    Output:
-	AX    := status
-	(All other registers are preserved)
-     */
-
-    ((char*)pVbe->memory)[0] = 'V';
-    ((char*)pVbe->memory)[1] = 'B';
-    ((char*)pVbe->memory)[2] = 'E';
-    ((char*)pVbe->memory)[3] = '2';
-
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f00;
-    pVbe->pInt10->es = SEG_ADDR(pVbe->real_mode_base);
-    pVbe->pInt10->di = SEG_OFF(pVbe->real_mode_base);
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (NULL);
-
-    block = xcalloc(sizeof(VbeInfoBlock), 1);
-    block->VESASignature[0] = ((char*)pVbe->memory)[0];
-    block->VESASignature[1] = ((char*)pVbe->memory)[1];
-    block->VESASignature[2] = ((char*)pVbe->memory)[2];
-    block->VESASignature[3] = ((char*)pVbe->memory)[3];
-
-    block->VESAVersion = *(CARD16*)(((char*)pVbe->memory) + 4);
-    major = (unsigned)block->VESAVersion >> 8;
-
-    pStr = GET_UNALIGNED2((((char*)pVbe->memory) + 6));
-    str = xf86int10Addr(pVbe->pInt10, FARP(pStr));
-    block->OEMStringPtr = strdup(str);
-
-    block->Capabilities[0] = ((char*)pVbe->memory)[10];
-    block->Capabilities[1] = ((char*)pVbe->memory)[11];
-    block->Capabilities[2] = ((char*)pVbe->memory)[12];
-    block->Capabilities[3] = ((char*)pVbe->memory)[13];
-
-    pModes = GET_UNALIGNED2((((char*)pVbe->memory) + 14));
-    modes = xf86int10Addr(pVbe->pInt10, FARP(pModes));
-    i = 0;
-    while (modes[i] != 0xffff)
-	i++;
-    block->VideoModePtr = xalloc(sizeof(CARD16) * i + 1);
-    memcpy(block->VideoModePtr, modes, sizeof(CARD16) * i);
-    block->VideoModePtr[i] = 0xffff;
-
-    block->TotalMemory = *(CARD16*)(((char*)pVbe->memory) + 18);
-
-    if (major < 2)
-	memcpy(&block->OemSoftwareRev, ((char*)pVbe->memory) + 20, 236);
-    else {
-	block->OemSoftwareRev = *(CARD16*)(((char*)pVbe->memory) + 20);
-	pStr = GET_UNALIGNED2((((char*)pVbe->memory) + 22));
-	str = xf86int10Addr(pVbe->pInt10, FARP(pStr));
-	block->OemVendorNamePtr = strdup(str);
-	pStr = GET_UNALIGNED2((((char*)pVbe->memory) + 26));
-	str = xf86int10Addr(pVbe->pInt10, FARP(pStr));
-	block->OemProductNamePtr = strdup(str);
-	pStr = GET_UNALIGNED2((((char*)pVbe->memory) + 30));
-	str = xf86int10Addr(pVbe->pInt10, FARP(pStr));
-	block->OemProductRevPtr = strdup(str);
-	memcpy(&block->Reserved, ((char*)pVbe->memory) + 34, 222);
-	memcpy(&block->OemData, ((char*)pVbe->memory) + 256, 256);
-    }
-
-    return (block);
-}
-
-void
-VBEFreeVBEInfo(VbeInfoBlock *block)
-{
-    xfree(block->OEMStringPtr);
-    xfree(block->VideoModePtr);
-    if (((unsigned)block->VESAVersion >> 8) >= 2) {
-	xfree(block->OemVendorNamePtr);
-	xfree(block->OemProductNamePtr);
-	xfree(block->OemProductRevPtr);
-    }
-    xfree(block);
-}
-
-Bool
-VBESetVBEMode(vbeInfoPtr pVbe, int mode, VbeCRTCInfoBlock *block)
-{
-    /*
-    Input:
-	AH    := 4Fh	Super VGA support
-	AL    := 02h	Set Super VGA video mode
-	BX    := Video mode
-	    D0-D8  := Mode number
-	    D9-D10 := Reserved (must be 0)
-	    D11    := 0 Use current default refresh rate
-		   := 1 Use user specified CRTC values for refresh rate
-	    D12-13	Reserved for VBE/AF (must be 0)
-	    D14    := 0 Use windowed frame buffer model
-		   := 1 Use linear/flat frame buffer model
-	    D15    := 0 Clear video memory
-		   := 1 Don't clear video memory
-	ES:DI := Pointer to VbeCRTCInfoBlock structure
-
-    Output: AX = Status
-	(All other registers are preserved)
-    */
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f02;
-    pVbe->pInt10->bx = mode;
-    if (block) {
-	pVbe->pInt10->bx |= 1 << 11;
-	memcpy(pVbe->memory, block, sizeof(VbeCRTCInfoBlock));
-	pVbe->pInt10->es = SEG_ADDR(pVbe->real_mode_base);
-	pVbe->pInt10->di = SEG_OFF(pVbe->real_mode_base);
-    } else
-	pVbe->pInt10->bx &= ~(1 << 11);
-
-    xf86ExecX86int10(pVbe->pInt10);
-
-    return (R16(pVbe->pInt10->ax) == 0x4f);
-}
-
-Bool
-VBEGetVBEMode(vbeInfoPtr pVbe, int *mode)
-{
-    /*
-    Input:
-	AH := 4Fh	Super VGA support
-	AL := 03h	Return current video mode
-
-    Output:
-	AX := Status
-	BX := Current video mode
-	(All other registers are preserved)
-    */
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f03;
-
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) == 0x4f) {
-	*mode = R16(pVbe->pInt10->bx);
-
-	return (TRUE);
-    }
-
-    return (FALSE);
-}
-
-VbeModeInfoBlock *
-VBEGetModeInfo(vbeInfoPtr pVbe, int mode)
-{
-    VbeModeInfoBlock *block = NULL;
-
-    bzero(pVbe->memory, sizeof(VbeModeInfoBlock));
-
-    /*
-    Input:
-	AH    := 4Fh	Super VGA support
-	AL    := 01h	Return Super VGA mode information
-	CX    := 	Super VGA video mode
-			(mode number must be one of those returned by Function 0)
-	ES:DI := Pointer to buffer
-
-    Output:
-	AX    := status
-	(All other registers are preserved)
-     */
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f01;
-    pVbe->pInt10->cx = mode;
-    pVbe->pInt10->es = SEG_ADDR(pVbe->real_mode_base);
-    pVbe->pInt10->di = SEG_OFF(pVbe->real_mode_base);
-    xf86ExecX86int10(pVbe->pInt10);
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (NULL);
-
-    block = xcalloc(sizeof(VbeModeInfoBlock), 1);
-
-    block->ModeAttributes = *(CARD16*)pVbe->memory;
-    block->WinAAttributes = ((char*)pVbe->memory)[2];
-    block->WinBAttributes = ((char*)pVbe->memory)[3];
-    block->WinGranularity = *(CARD16*)(((char*)pVbe->memory) + 4);
-    block->WinSize = *(CARD16*)(((char*)pVbe->memory) + 6);
-    block->WinASegment = *(CARD16*)(((char*)pVbe->memory) + 8);
-    block->WinBSegment = *(CARD16*)(((char*)pVbe->memory) + 10);
-    block->WinFuncPtr = *(CARD32*)(((char*)pVbe->memory) + 12);
-    block->BytesPerScanline = *(CARD16*)(((char*)pVbe->memory) + 16);
-
-    /* mandatory information for VBE 1.2 and above */
-    block->XResolution = *(CARD16*)(((char*)pVbe->memory) + 18);
-    block->YResolution = *(CARD16*)(((char*)pVbe->memory) + 20);
-    block->XCharSize = ((char*)pVbe->memory)[22];
-    block->YCharSize = ((char*)pVbe->memory)[23];
-    block->NumberOfPlanes = ((char*)pVbe->memory)[24];
-    block->BitsPerPixel = ((char*)pVbe->memory)[25];
-    block->NumberOfBanks = ((char*)pVbe->memory)[26];
-    block->MemoryModel = ((char*)pVbe->memory)[27];
-    block->BankSize = ((char*)pVbe->memory)[28];
-    block->NumberOfImages = ((char*)pVbe->memory)[29];
-    block->Reserved = ((char*)pVbe->memory)[30];
-
-    /* Direct color fields (required for direct/6 and YUV/7 memory models) */
-    block->RedMaskSize = ((char*)pVbe->memory)[31];
-    block->RedFieldPosition = ((char*)pVbe->memory)[32];
-    block->GreenMaskSize = ((char*)pVbe->memory)[33];
-    block->GreenFieldPosition = ((char*)pVbe->memory)[34];
-    block->BlueMaskSize = ((char*)pVbe->memory)[35];
-    block->BlueFieldPosition = ((char*)pVbe->memory)[36];
-    block->RsvdMaskSize = ((char*)pVbe->memory)[37];
-    block->RsvdFieldPosition = ((char*)pVbe->memory)[38];
-    block->DirectColorModeInfo = ((char*)pVbe->memory)[39];
-
-    /* Mandatory information for VBE 2.0 and above */
-    if (pVbe->version >= 0x200) {
-	block->PhysBasePtr = *(CARD32*)(((char*)pVbe->memory) + 40);
-	block->Reserved32 = *(CARD32*)(((char*)pVbe->memory) + 44);
-	block->Reserved16 = *(CARD16*)(((char*)pVbe->memory) + 48);
-
-	/* Mandatory information for VBE 3.0 and above */
-	if (pVbe->version >= 0x300) {
-	    block->LinBytesPerScanLine = *(CARD16*)(((char*)pVbe->memory) + 50);
-	    block->BnkNumberOfImagePages = ((char*)pVbe->memory)[52];
-	    block->LinNumberOfImagePages = ((char*)pVbe->memory)[53];
-	    block->LinRedMaskSize = ((char*)pVbe->memory)[54];
-	    block->LinRedFieldPosition = ((char*)pVbe->memory)[55];
-	    block->LinGreenMaskSize = ((char*)pVbe->memory)[56];
-	    block->LinGreenFieldPosition = ((char*)pVbe->memory)[57];
-	    block->LinBlueMaskSize = ((char*)pVbe->memory)[58];
-	    block->LinBlueFieldPosition = ((char*)pVbe->memory)[59];
-	    block->LinRsvdMaskSize = ((char*)pVbe->memory)[60];
-	    block->LinRsvdFieldPosition = ((char*)pVbe->memory)[61];
-	    block->MaxPixelClock = *(CARD32*)(((char*)pVbe->memory) + 62);
-	    memcpy(&block->Reserved2, ((char*)pVbe->memory) + 66, 188);
-	}
-	else
-	memcpy(&block->LinBytesPerScanLine, ((char*)pVbe->memory) + 50, 206);
-    }
-    else
-	memcpy(&block->PhysBasePtr, ((char*)pVbe->memory) + 40, 216);
-
-    return (block);
-}
-
-void
-VBEFreeModeInfo(VbeModeInfoBlock *block)
-{
-    xfree(block);
-}
-
-Bool
-VBESaveRestore(vbeInfoPtr pVbe, vbeSaveRestoreFunction function, 
-	       pointer *memory, int *size, int *real_mode_pages)
-{
-    /*
-    Input:
-	AH    := 4Fh	Super VGA support
-	AL    := 04h	Save/restore Super VGA video state
-	DL    := 00h	Return save/restore state buffer size
-	CX    := Requested states
-		D0 = Save/restore video hardware state
-		D1 = Save/restore video BIOS data state
-		D2 = Save/restore video DAC state
-		D3 = Save/restore Super VGA state
-
-    Output:
-	AX = Status
-	BX = Number of 64-byte blocks to hold the state buffer
-	(All other registers are preserved)
-
-
-    Input:
-	AH    := 4Fh	Super VGA support
-	AL    := 04h	Save/restore Super VGA video state
-	DL    := 01h	Save Super VGA video state
-	CX    := Requested states (see above)
-	ES:BX := Pointer to buffer
-
-    Output:
-	AX    := Status
-	(All other registers are preserved)
-
-
-    Input:
-	AH    := 4Fh	Super VGA support
-	AL    := 04h	Save/restore Super VGA video state
-	DL    := 02h	Restore Super VGA video state
-	CX    := Requested states (see above)
-	ES:BX := Pointer to buffer
-
-    Output:
-	AX     := Status
-	(All other registers are preserved)
-     */
-
-    if ((pVbe->version & 0xff00) > 0x100) {
-        int screen = pVbe->pInt10->scrnIndex;
-        if (function == MODE_QUERY ||
-	    (function == MODE_SAVE && !*memory)) {
-	    /* Query amount of memory to save state */
-
-	    pVbe->pInt10->num = 0x10;
-	    pVbe->pInt10->ax = 0x4f04;
-	    pVbe->pInt10->dx = 0;
-	    pVbe->pInt10->cx = 0x000f;
-	    xf86ExecX86int10(pVbe->pInt10);
-	    if (R16(pVbe->pInt10->ax) != 0x4f)
-	        return (FALSE);
-
-	    if (function == MODE_SAVE) {
-	        int npages = (R16(pVbe->pInt10->bx) * 64) / 4096 + 1;
-		if ((*memory = xf86Int10AllocPages(pVbe->pInt10, npages,
-						   real_mode_pages)) == NULL) {
-		    xf86DrvMsg(screen, X_ERROR,
-			       "Cannot allocate memory to save SVGA state.\n");
-		    return (FALSE);
-		}
-	    }
-	    *size = pVbe->pInt10->bx * 64;
-	}
-
-	/* Save/Restore Super VGA state */
-	if (function != MODE_QUERY) {
-	    
-	    if (!*memory) return FALSE;
-	    pVbe->pInt10->num = 0x10;
-	    pVbe->pInt10->ax = 0x4f04;
-	    switch (function) {
-	    case MODE_SAVE:
-	      pVbe->pInt10->dx = 1;
-	      break;
-	    case MODE_RESTORE:
-	      pVbe->pInt10->dx = 2;
-	      break;
-	    case MODE_QUERY:
-	      return FALSE;
-	    }
-	    pVbe->pInt10->cx = 0x000f;
-	    
-	    pVbe->pInt10->es = SEG_ADDR(*real_mode_pages);
-	    pVbe->pInt10->bx = SEG_OFF(*real_mode_pages);
-	    xf86ExecX86int10(pVbe->pInt10);
-	    return (R16(pVbe->pInt10->ax) == 0x4f);
-
-	}
-    }
-    return TRUE;
-}
-
-Bool
-VBEBankSwitch(vbeInfoPtr pVbe, unsigned int iBank, int window)
-{
-    /*
-    Input:
-	AH    := 4Fh	Super VGA support
-	AL    := 05h
-
-    Output:
-     */
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f05;
-    pVbe->pInt10->bx = window;
-    pVbe->pInt10->dx = iBank;
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (FALSE);
-
-    return (TRUE);
-}
-
-Bool
-VBESetGetLogicalScanlineLength(vbeInfoPtr pVbe, vbeScanwidthCommand command,
-				int width, int *pixels, int *bytes, int *max)
-{
-    if (command < SCANWID_SET || command > SCANWID_GET_MAX)
-	return (FALSE);
-
-    /*
-    Input:
-	AX := 4F06h VBE Set/Get Logical Scan Line Length
-	BL := 00h Set Scan Line Length in Pixels
-	   := 01h Get Scan Line Length
-	   := 02h Set Scan Line Length in Bytes
-	   := 03h Get Maximum Scan Line Length
-	CX := If BL=00h Desired Width in Pixels
-	      If BL=02h Desired Width in Bytes
-	      (Ignored for Get Functions)
-
-    Output:
-	AX := VBE Return Status
-	BX := Bytes Per Scan Line
-	CX := Actual Pixels Per Scan Line
-	      (truncated to nearest complete pixel)
-	DX := Maximum Number of Scan Lines
-     */
-
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f06;
-    pVbe->pInt10->bx = command;
-    if (command == SCANWID_SET || command == SCANWID_SET_BYTES)
-	pVbe->pInt10->cx = width;
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (FALSE);
-
-    if (command == SCANWID_GET || command == SCANWID_GET_MAX) {
-	if (pixels)
-	    *pixels = R16(pVbe->pInt10->cx);
-	if (bytes)
-	    *bytes = R16(pVbe->pInt10->bx);
-	if (max)
-	    *max = R16(pVbe->pInt10->dx);
-    }
-
-    return (TRUE);
-}
-
-Bool
-VBESetDisplayStart(vbeInfoPtr pVbe, int x, int y, Bool wait_retrace)
-{
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f07;
-    pVbe->pInt10->bx = wait_retrace ? 0x80 : 0x00;
-    pVbe->pInt10->cx = x;
-    pVbe->pInt10->dx = y;
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (FALSE);
-
-    return (TRUE);
-}
-
-Bool
-VBEGetDisplayStart(vbeInfoPtr pVbe, int *x, int *y)
-{
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f07;
-    pVbe->pInt10->bx = 0x01;
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (FALSE);
-
-    *x = pVbe->pInt10->cx;
-    *y = pVbe->pInt10->dx;
-
-    return (TRUE);
-}
-
-int
-VBESetGetDACPaletteFormat(vbeInfoPtr pVbe, int bits)
-{
-    /*
-    Input:
-	AX := 4F08h VBE Set/Get Palette Format
-	BL := 00h Set DAC Palette Format
-	   := 01h Get DAC Palette Format
-	BH := Desired bits of color per primary
-	      (Set DAC Palette Format only)
-
-    Output:
-	AX := VBE Return Status
-	BH := Current number of bits of color per primary
-     */
-
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f08;
-    if (!bits)
-	pVbe->pInt10->bx = 0x01;
-    else 
-	pVbe->pInt10->bx = (bits & 0x00ff) << 8;
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (0);
-
-    return (bits != 0 ? bits : (pVbe->pInt10->bx >> 8) & 0x00ff);
-}
-
-CARD32 *
-VBESetGetPaletteData(vbeInfoPtr pVbe, Bool set, int first, int num,
-		      CARD32 *data, Bool secondary, Bool wait_retrace)
-{
-    /*
-    Input:
-    (16-bit)
-	AX    := 4F09h VBE Load/Unload Palette Data
-	BL    := 00h Set Palette Data
-	      := 01h Get Palette Data
-	      := 02h Set Secondary Palette Data
-	      := 03h Get Secondary Palette Data
-	      := 80h Set Palette Data during Vertical Retrace
-	CX    := Number of palette registers to update (to a maximum of 256)
-	DX    := First of the palette registers to update (start)
-	ES:DI := Table of palette values (see below for format)
-
-    Output:
-	AX    := VBE Return Status
-
-
-    Input:
-    (32-bit)
-	BL     := 00h Set Palette Data
-	       := 80h Set Palette Data during Vertical Retrace
-	CX     := Number of palette registers to update (to a maximum of 256)
-	DX     := First of the palette registers to update (start)
-	ES:EDI := Table of palette values (see below for format)
-	DS     := Selector for memory mapped registers
-     */
-
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f09;
-    if (!secondary)
-	pVbe->pInt10->bx = set && wait_retrace ? 0x80 : set ? 0 : 1;
-    else
-	pVbe->pInt10->bx = set ? 2 : 3;
-    pVbe->pInt10->cx = num;
-    pVbe->pInt10->dx = first;
-    pVbe->pInt10->es = SEG_ADDR(pVbe->real_mode_base);
-    pVbe->pInt10->di = SEG_OFF(pVbe->real_mode_base);
-    if (set)
-	memcpy(pVbe->memory, data, num * sizeof(CARD32));
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (NULL);
-
-    if (set)
-	return (data);
-
-    data = xalloc(num * sizeof(CARD32));
-    memcpy(data, pVbe->memory, num * sizeof(CARD32));
-
-    return (data);
-}
-
-VBEpmi *
-VBEGetVBEpmi(vbeInfoPtr pVbe)
-{
-    VBEpmi *pmi;
-
-    /*
-    Input:
-	AH    := 4Fh	Super VGA support
-	AL    := 0Ah	Protected Mode Interface
-	BL    := 00h	Return Protected Mode Table
-
-    Output:
-	AX    := Status
-	ES    := Real Mode Segment of Table
-	DI    := Offset of Table
-	CX    := Lenght of Table including protected mode code in bytes (for copying purposes)
-	(All other registers are preserved)
-     */
-
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f0a;
-    pVbe->pInt10->bx = 0;
-    pVbe->pInt10->di = 0;
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (NULL);
-
-    pmi = xalloc(sizeof(VBEpmi));
-    pmi->seg_tbl = R16(pVbe->pInt10->es);
-    pmi->tbl_off = R16(pVbe->pInt10->di);
-    pmi->tbl_len = R16(pVbe->pInt10->cx);
-
-    return (pmi);
-}
-
-#if 0
-vbeModeInfoPtr
-VBEBuildVbeModeList(vbeInfoPtr pVbe, VbeInfoBlock *vbe)
-{
-    vbeModeInfoPtr ModeList = NULL;
-
-    int i = 0;
-    while (vbe->VideoModePtr[i] != 0xffff) {
-	vbeModeInfoPtr m;
-	VbeModeInfoBlock *mode;
-	int id = vbe->VideoModePtr[i++];
-	int bpp;
-
-	if ((mode = VBEGetModeInfo(pVbe, id)) == NULL)
-	    continue;
-
- 	bpp = mode->BitsPerPixel;
-
-	m = xnfcalloc(sizeof(vbeModeInfoRec),1);
-	m->width = mode->XResolution;
-	m->height = mode->YResolution;
-	m->bpp = bpp;
-	m->n = id;
-	m->next = ModeList;
-
-	xf86DrvMsgVerb(pVbe->pInt10->scrnIndex, X_PROBED, 3,
-		       "BIOS reported VESA mode 0x%x: x:%i y:%i bpp:%i\n",
-		       m->n, m->width, m->height, m->bpp);
-
-	ModeList = m;
-
-	VBEFreeModeInfo(mode);
-    }
-    return ModeList;
-}
-
-unsigned short 
-VBECalcVbeModeIndex(vbeModeInfoPtr m, DisplayModePtr mode, int bpp)
-{
-    while (m) {
-	if (bpp == m->bpp 
-	    && mode->HDisplay == m->width 
-	    && mode->VDisplay == m->height)
-	    return m->n;
-	m = m->next;
-    }
-    return 0;
-}
-#endif
-
-void
-VBEVesaSaveRestore(vbeInfoPtr pVbe, vbeSaveRestorePtr vbe_sr,
-		  vbeSaveRestoreFunction function)
-{
-    Bool SaveSucc = FALSE;
-
-    if (VBE_VERSION_MAJOR(pVbe->version) > 1
-	&& (function == MODE_SAVE || vbe_sr->pstate)) {
-	if (function == MODE_RESTORE)
-	    memcpy(vbe_sr->state, vbe_sr->pstate, vbe_sr->stateSize);
-	ErrorF("VBESaveRestore\n");
-	if ((VBESaveRestore(pVbe,function,
-			    (pointer)&vbe_sr->state,
-			    &vbe_sr->stateSize,&vbe_sr->statePage))) {
-	    if (function == MODE_SAVE) {
-		SaveSucc = TRUE;
-		vbe_sr->stateMode = -1; /* invalidate */
-		/* don't rely on the memory not being touched */
-		if (vbe_sr->pstate == NULL)
-		    vbe_sr->pstate = xalloc(vbe_sr->stateSize);
-		memcpy(vbe_sr->pstate, vbe_sr->state, vbe_sr->stateSize);
-	    }
-	    ErrorF("VBESaveRestore done with success\n");
-	    return;
-	}
-	ErrorF("VBESaveRestore done\n");
-    } 
-    
-    if (function == MODE_SAVE && !SaveSucc)
-	    (void)VBEGetVBEMode(pVbe, &vbe_sr->stateMode);
-	
-    if (function == MODE_RESTORE && vbe_sr->stateMode != -1)
-	    VBESetVBEMode(pVbe, vbe_sr->stateMode, NULL);
-
-}
-
-int
-VBEGetPixelClock(vbeInfoPtr pVbe, int mode, int clock)
-{
-    /*
-    Input:
-	AX := 4F0Bh VBE Get Pixel Clock
-	BL := 00h Get Pixel Clock
-	ECX := pixel clock in units of Hz
-        DX := mode number
-     
-    Output:
-	AX := VBE Return Status
-	ECX := Closest pixel clock
-     */
-
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f0b;
-    pVbe->pInt10->bx = 0x00;
-    pVbe->pInt10->cx = clock;
-    pVbe->pInt10->dx = mode;
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if (R16(pVbe->pInt10->ax) != 0x4f)
-	return (0);
-
-    return (pVbe->pInt10->cx);
-}
-
-Bool
-VBEDPMSSet(vbeInfoPtr pVbe, int mode)
-{
-    /*
-    Input:
-	AX := 4F10h DPMS
-	BL := 01h Set Display Power State
-	BH := requested power state
-     
-    Output:
-	AX := VBE Return Status
-     */
-
-    pVbe->pInt10->num = 0x10;
-    pVbe->pInt10->ax = 0x4f10;
-    pVbe->pInt10->bx = 0x01;
-    switch (mode) {
-    case DPMSModeOn:
-	break;
-    case DPMSModeStandby:
-	pVbe->pInt10->bx |= 0x100;
-	break;
-    case DPMSModeSuspend:
-	pVbe->pInt10->bx |= 0x200;
-	break;
-    case DPMSModeOff:
-	pVbe->pInt10->bx |= 0x400;
-	break;
-    }
-    xf86ExecX86int10(pVbe->pInt10);
-    return (R16(pVbe->pInt10->ax) == 0x4f);
-}
-
-void
-VBEInterpretPanelID(int scrnIndex, struct vbePanelID *data)
-{
-    ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
-    DisplayModePtr mode;
-    const float PANEL_HZ = 60.0;
-
-    if (!data)
-	return;
-
-    xf86DrvMsg(scrnIndex, X_INFO, "PanelID returned panel resolution %dx%d\n",
-	    data->hsize, data->vsize);
-
-    if (pScrn->monitor->nHsync || pScrn->monitor->nVrefresh)
-	return;
-
-    mode = xf86CVTMode(data->hsize, data->vsize, PANEL_HZ, 1, 0);
-
-    pScrn->monitor->nHsync = 1;
-    pScrn->monitor->hsync[0].lo = 31.5;
-    pScrn->monitor->hsync[0].hi = (float)mode->Clock / (float)mode->HTotal;
-    pScrn->monitor->nVrefresh = 1;
-    pScrn->monitor->vrefresh[0].lo = 56.0;
-    pScrn->monitor->vrefresh[0].hi =
-	(float)mode->Clock*1000.0 / (float)mode->HTotal / (float)mode->VTotal;
-
-    xfree(mode);
-}
-
-struct vbePanelID *
-VBEReadPanelID(vbeInfoPtr pVbe)
-{
-    int RealOff = pVbe->real_mode_base;
-    pointer page = pVbe->memory;
-    void *tmp = NULL;
-    int screen = pVbe->pInt10->scrnIndex;
-
-    pVbe->pInt10->ax = 0x4F11;
-    pVbe->pInt10->bx = 0x01;
-    pVbe->pInt10->cx = 0;
-    pVbe->pInt10->dx = 0;
-    pVbe->pInt10->es = SEG_ADDR(RealOff);
-    pVbe->pInt10->di = SEG_OFF(RealOff);
-    pVbe->pInt10->num = 0x10;
-
-    xf86ExecX86int10(pVbe->pInt10);
-
-    if ((pVbe->pInt10->ax & 0xff) != 0x4f) {
-	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE PanelID invalid\n");
-	goto error;
-    }
-
-    switch (pVbe->pInt10->ax & 0xff00) {
-    case 0x0:
-	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE PanelID read successfully\n");
-	tmp = xnfalloc(32); 
-	memcpy(tmp, page, 32); 
-	break;
-    case 0x100:
-	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE PanelID read failed\n");       
-	break;
-    default:
-	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE PanelID unknown failure %i\n",
-		       pVbe->pInt10->ax & 0xff00);
-	break;
-    }
-
-error:
-    return tmp;
-}
+

+/*

+ *                   XFree86 vbe module

+ *               Copyright 2000 Egbert Eich

+ *

+ * The mode query/save/set/restore functions from the vesa driver 

+ * have been moved here.

+ * Copyright (c) 2000 by Conectiva S.A. (http://www.conectiva.com)

+ * Authors: Paulo César Pereira de Andrade <pcpa@conectiva.com.br> 

+ */

+

+#ifdef HAVE_XORG_CONFIG_H

+#include <xorg-config.h>

+#endif

+

+#include <string.h>

+

+#include "xf86.h"

+#include "vbe.h"

+#include <X11/Xarch.h>

+#include <X11/extensions/dpmsconst.h>

+

+#define VERSION(x) VBE_VERSION_MAJOR(x),VBE_VERSION_MINOR(x)

+

+#if X_BYTE_ORDER == X_LITTLE_ENDIAN

+#define B_O16(x)  (x) 

+#define B_O32(x)  (x)

+#else

+#define B_O16(x)  ((((x) & 0xff) << 8) | (((x) & 0xff) >> 8))

+#define B_O32(x)  ((((x) & 0xff) << 24) | (((x) & 0xff00) << 8) \

+                  | (((x) & 0xff0000) >> 8) | (((x) & 0xff000000) >> 24))

+#endif

+#define L_ADD(x)  (B_O32(x) & 0xffff) + ((B_O32(x) >> 12) & 0xffff00)

+

+#define FARP(p)		(((unsigned)(p & 0xffff0000) >> 12) | (p & 0xffff))

+#define R16(v)		((v) & 0xffff)

+

+static unsigned char * vbeReadEDID(vbeInfoPtr pVbe);

+static Bool vbeProbeDDC(vbeInfoPtr pVbe);

+

+static const char vbeVersionString[] = "VBE2";

+

+vbeInfoPtr

+VBEInit(xf86Int10InfoPtr pInt, int entityIndex)

+{

+    return VBEExtendedInit(pInt, entityIndex, 0);

+}

+

+vbeInfoPtr

+VBEExtendedInit(xf86Int10InfoPtr pInt, int entityIndex, int Flags)

+{

+    int RealOff;

+    pointer page = NULL;

+    ScrnInfoPtr pScrn = xf86FindScreenForEntity(entityIndex);

+    vbeControllerInfoPtr vbe = NULL;

+    Bool init_int10 = FALSE;

+    vbeInfoPtr vip = NULL;

+    int screen;

+

+    if (!pScrn) return NULL;

+    screen = pScrn->scrnIndex;

+    

+    if (!pInt) {

+	if (!xf86LoadSubModule(pScrn, "int10"))

+	    goto error;

+

+	xf86DrvMsg(screen,X_INFO,"initializing int10\n");

+	pInt = xf86ExtendedInitInt10(entityIndex,Flags);

+	if (!pInt)

+	    goto error;

+	init_int10 = TRUE;

+    }

+    

+    page = xf86Int10AllocPages(pInt,1,&RealOff);

+    if (!page) goto error;

+    vbe = (vbeControllerInfoPtr) page;    

+    memcpy(vbe->VbeSignature,vbeVersionString,4);

+

+    pInt->ax = 0x4F00;

+    pInt->es = SEG_ADDR(RealOff);

+    pInt->di = SEG_OFF(RealOff);

+    pInt->num = 0x10;

+    

+    xf86ExecX86int10(pInt);

+

+    if ((pInt->ax & 0xff) != 0x4f) {

+	xf86DrvMsgVerb(screen,X_INFO,3,"VESA BIOS not detected\n");

+	goto error;

+    }

+    

+    switch (pInt->ax & 0xff00) {

+    case 0:

+	xf86DrvMsg(screen,X_INFO,"VESA BIOS detected\n");

+	break;

+    case 0x100:

+	xf86DrvMsg(screen,X_INFO,"VESA BIOS function failed\n");

+	goto error;

+    case 0x200:

+	xf86DrvMsg(screen,X_INFO,"VESA BIOS not supported\n");

+	goto error;

+    case 0x300:

+	xf86DrvMsg(screen,X_INFO,"VESA BIOS not supported in current mode\n");

+	goto error;

+    default:

+	xf86DrvMsg(screen,X_INFO,"Invalid\n");

+	goto error;

+    }

+    

+    xf86DrvMsgVerb(screen, X_INFO, 4,

+		"VbeVersion is %d, OemStringPtr is 0x%08lx,\n"

+		"\tOemVendorNamePtr is 0x%08lx, OemProductNamePtr is 0x%08lx,\n"

+		"\tOemProductRevPtr is 0x%08lx\n",

+		vbe->VbeVersion, (unsigned long)vbe->OemStringPtr,

+		(unsigned long)vbe->OemVendorNamePtr,

+		(unsigned long)vbe->OemProductNamePtr,

+		(unsigned long)vbe->OemProductRevPtr);

+

+    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE Version %i.%i\n",

+		   VERSION(vbe->VbeVersion));

+    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE Total Mem: %i kB\n",

+		   vbe->TotalMem * 64);

+    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM: %s\n",

+		   (CARD8*)xf86int10Addr(pInt,L_ADD(vbe->OemStringPtr)));

+    

+    if (B_O16(vbe->VbeVersion) >= 0x200) {

+	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM Software Rev: %i.%i\n",

+		    VERSION(vbe->OemSoftwareRev));

+	if (vbe->OemVendorNamePtr)

+	    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM Vendor: %s\n",

+		    (CARD8*)xf86int10Addr(pInt,L_ADD(vbe->OemVendorNamePtr)));

+	if (vbe->OemProductNamePtr)

+	    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM Product: %s\n",

+		    (CARD8*)xf86int10Addr(pInt,L_ADD(vbe->OemProductNamePtr)));

+	if (vbe->OemProductRevPtr)

+	    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE OEM Product Rev: %s\n",

+		    (CARD8*)xf86int10Addr(pInt,L_ADD(vbe->OemProductRevPtr)));

+    }

+    vip = (vbeInfoPtr)xnfalloc(sizeof(vbeInfoRec));

+    vip->version = B_O16(vbe->VbeVersion);

+    vip->pInt10 = pInt;

+    vip->ddc = DDC_UNCHECKED;

+    vip->memory = page;

+    vip->real_mode_base = RealOff;

+    vip->num_pages = 1;

+    vip->init_int10 = init_int10;

+

+    return vip;

+

+ error:

+    if (page)

+	xf86Int10FreePages(pInt, page, 1);

+    if (init_int10)

+	xf86FreeInt10(pInt);

+    return NULL;

+}

+

+void

+vbeFree(vbeInfoPtr pVbe)

+{

+    if (!pVbe)

+	return;

+

+    xf86Int10FreePages(pVbe->pInt10,pVbe->memory,pVbe->num_pages);

+    /* If we have initalized int10 we ought to free it, too */

+    if (pVbe->init_int10) 

+	xf86FreeInt10(pVbe->pInt10);

+    free(pVbe);

+    return;

+}

+

+static Bool

+vbeProbeDDC(vbeInfoPtr pVbe)

+{

+    char *ddc_level;

+    int screen = pVbe->pInt10->scrnIndex;

+    

+    if (pVbe->ddc == DDC_NONE)

+	return FALSE;

+    if (pVbe->ddc != DDC_UNCHECKED)

+	return TRUE;

+

+    pVbe->pInt10->ax = 0x4F15;

+    pVbe->pInt10->bx = 0;

+    pVbe->pInt10->cx = 0;

+    pVbe->pInt10->es = 0;

+    pVbe->pInt10->di = 0;

+    pVbe->pInt10->num = 0x10;

+

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if ((pVbe->pInt10->ax & 0xff) != 0x4f) {

+        xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC not supported\n");

+	pVbe->ddc = DDC_NONE;

+	return FALSE;

+    }

+

+    switch ((pVbe->pInt10->ax >> 8) & 0xff) {

+    case 0:

+	xf86DrvMsg(screen,X_INFO,"VESA VBE DDC supported\n");

+	switch (pVbe->pInt10->bx & 0x3) {

+	case 0:

+  	    ddc_level = " none"; 

+	    pVbe->ddc = DDC_NONE;

+	    break;

+	case 1:

+  	    ddc_level = " 1";

+	    pVbe->ddc = DDC_1;

+	    break;

+	case 2:

+  	    ddc_level = " 2"; 

+	    pVbe->ddc = DDC_2;

+	    break;

+	case 3:

+  	    ddc_level = " 1 + 2"; 

+	    pVbe->ddc = DDC_1_2;

+	    break;

+	default:

+ 	    ddc_level = "";

+	    pVbe->ddc = DDC_NONE;

+	    break;

+	}

+  	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC Level%s\n",ddc_level); 

+  	if (pVbe->pInt10->bx & 0x4) {

+    	    xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC Screen blanked" 

+    			"for data transfer\n"); 

+    	    pVbe->ddc_blank = TRUE;

+    	}  else

+    	    pVbe->ddc_blank = FALSE;

+	    

+  	xf86DrvMsgVerb(screen,X_INFO,3,

+		       "VESA VBE DDC transfer in appr. %x sec.\n", 

+		       (pVbe->pInt10->bx >> 8) & 0xff); 

+    }

+    

+    return TRUE; 

+}

+

+typedef enum {

+  VBEOPT_NOVBE,

+    VBEOPT_NODDC

+} VBEOpts;

+

+static const OptionInfoRec VBEOptions[] = {

+    { VBEOPT_NOVBE,	"NoVBE",	OPTV_BOOLEAN,	{0},	FALSE },

+    { VBEOPT_NODDC,	"NoDDC",	OPTV_BOOLEAN,	{0},	FALSE },

+    { -1,		NULL,		OPTV_NONE,	{0},	FALSE },

+};

+

+static unsigned char *

+vbeReadEDID(vbeInfoPtr pVbe)

+{

+    int RealOff = pVbe->real_mode_base;

+    pointer page = pVbe->memory;

+    unsigned char *tmp = NULL;

+    Bool novbe = FALSE;

+    Bool noddc = FALSE;

+    int screen = pVbe->pInt10->scrnIndex;

+    OptionInfoPtr options;

+

+    if (!page) return NULL;

+

+    options = xnfalloc(sizeof(VBEOptions));

+    (void)memcpy(options, VBEOptions, sizeof(VBEOptions));

+    xf86ProcessOptions(screen, xf86Screens[screen]->options, options);

+    xf86GetOptValBool(options, VBEOPT_NOVBE, &novbe);

+    xf86GetOptValBool(options, VBEOPT_NODDC, &noddc);

+    free(options);

+    if (novbe || noddc) return NULL;

+    

+    if (!vbeProbeDDC(pVbe)) goto error;

+

+    memset(page,0,sizeof(vbeInfoPtr));

+    strcpy(page,vbeVersionString);

+

+    pVbe->pInt10->ax = 0x4F15;

+    pVbe->pInt10->bx = 0x01;

+    pVbe->pInt10->cx = 0;

+    pVbe->pInt10->dx = 0;

+    pVbe->pInt10->es = SEG_ADDR(RealOff);

+    pVbe->pInt10->di = SEG_OFF(RealOff);

+    pVbe->pInt10->num = 0x10;

+

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if ((pVbe->pInt10->ax & 0xff) != 0x4f) {

+        xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC invalid\n");

+	goto error;

+    }

+    switch (pVbe->pInt10->ax & 0xff00) {

+    case 0x0:

+	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC read successfully\n");

+  	tmp = (unsigned char *)xnfalloc(128); 

+  	memcpy(tmp,page,128); 

+	break;

+    case 0x100:

+	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC read failed\n");	

+	break;

+    default:

+	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC unkown failure %i\n",

+		       pVbe->pInt10->ax & 0xff00);

+	break;

+    }

+    

+ error:

+    return tmp;

+}

+

+xf86MonPtr

+vbeDoEDID(vbeInfoPtr pVbe, pointer pDDCModule)

+{

+    xf86MonPtr    pMonitor;

+    pointer       pModule;

+    unsigned char *DDC_data = NULL;

+    

+    if (!pVbe) return NULL;

+    if (pVbe->version < 0x200)

+	return NULL;

+

+    if (!(pModule = pDDCModule)) {

+	pModule =

+	    xf86LoadSubModule(xf86Screens[pVbe->pInt10->scrnIndex], "ddc");

+	if (!pModule)

+	    return NULL;

+    }

+        

+    DDC_data = vbeReadEDID(pVbe);

+

+    if (!DDC_data) 

+	return NULL;

+    

+    pMonitor = xf86InterpretEDID(pVbe->pInt10->scrnIndex, DDC_data);

+

+    if (!pDDCModule)

+        xf86UnloadSubModule(pModule);

+    return pMonitor;

+}

+

+#define GET_UNALIGNED2(x) \

+            ((*(CARD16*)(x)) | (*(((CARD16*)(x) + 1))) << 16)

+

+VbeInfoBlock *

+VBEGetVBEInfo(vbeInfoPtr pVbe)

+{

+    VbeInfoBlock *block = NULL;

+    int i, pStr, pModes;

+    char *str;

+    CARD16 major, *modes;

+

+    bzero(pVbe->memory, sizeof(VbeInfoBlock));

+

+    /*

+    Input:

+	AH    := 4Fh	Super VGA support

+	AL    := 00h	Return Super VGA information

+	ES:DI := Pointer to buffer

+

+    Output:

+	AX    := status

+	(All other registers are preserved)

+     */

+

+    ((char*)pVbe->memory)[0] = 'V';

+    ((char*)pVbe->memory)[1] = 'B';

+    ((char*)pVbe->memory)[2] = 'E';

+    ((char*)pVbe->memory)[3] = '2';

+

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f00;

+    pVbe->pInt10->es = SEG_ADDR(pVbe->real_mode_base);

+    pVbe->pInt10->di = SEG_OFF(pVbe->real_mode_base);

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (NULL);

+

+    block = calloc(sizeof(VbeInfoBlock), 1);

+    block->VESASignature[0] = ((char*)pVbe->memory)[0];

+    block->VESASignature[1] = ((char*)pVbe->memory)[1];

+    block->VESASignature[2] = ((char*)pVbe->memory)[2];

+    block->VESASignature[3] = ((char*)pVbe->memory)[3];

+

+    block->VESAVersion = *(CARD16*)(((char*)pVbe->memory) + 4);

+    major = (unsigned)block->VESAVersion >> 8;

+

+    pStr = GET_UNALIGNED2((((char*)pVbe->memory) + 6));

+    str = xf86int10Addr(pVbe->pInt10, FARP(pStr));

+    block->OEMStringPtr = strdup(str);

+

+    block->Capabilities[0] = ((char*)pVbe->memory)[10];

+    block->Capabilities[1] = ((char*)pVbe->memory)[11];

+    block->Capabilities[2] = ((char*)pVbe->memory)[12];

+    block->Capabilities[3] = ((char*)pVbe->memory)[13];

+

+    pModes = GET_UNALIGNED2((((char*)pVbe->memory) + 14));

+    modes = xf86int10Addr(pVbe->pInt10, FARP(pModes));

+    i = 0;

+    while (modes[i] != 0xffff)

+	i++;

+    block->VideoModePtr = malloc(sizeof(CARD16) * i + 1);

+    memcpy(block->VideoModePtr, modes, sizeof(CARD16) * i);

+    block->VideoModePtr[i] = 0xffff;

+

+    block->TotalMemory = *(CARD16*)(((char*)pVbe->memory) + 18);

+

+    if (major < 2)

+	memcpy(&block->OemSoftwareRev, ((char*)pVbe->memory) + 20, 236);

+    else {

+	block->OemSoftwareRev = *(CARD16*)(((char*)pVbe->memory) + 20);

+	pStr = GET_UNALIGNED2((((char*)pVbe->memory) + 22));

+	str = xf86int10Addr(pVbe->pInt10, FARP(pStr));

+	block->OemVendorNamePtr = strdup(str);

+	pStr = GET_UNALIGNED2((((char*)pVbe->memory) + 26));

+	str = xf86int10Addr(pVbe->pInt10, FARP(pStr));

+	block->OemProductNamePtr = strdup(str);

+	pStr = GET_UNALIGNED2((((char*)pVbe->memory) + 30));

+	str = xf86int10Addr(pVbe->pInt10, FARP(pStr));

+	block->OemProductRevPtr = strdup(str);

+	memcpy(&block->Reserved, ((char*)pVbe->memory) + 34, 222);

+	memcpy(&block->OemData, ((char*)pVbe->memory) + 256, 256);

+    }

+

+    return (block);

+}

+

+void

+VBEFreeVBEInfo(VbeInfoBlock *block)

+{

+    free(block->OEMStringPtr);

+    free(block->VideoModePtr);

+    if (((unsigned)block->VESAVersion >> 8) >= 2) {

+	free(block->OemVendorNamePtr);

+	free(block->OemProductNamePtr);

+	free(block->OemProductRevPtr);

+    }

+    free(block);

+}

+

+Bool

+VBESetVBEMode(vbeInfoPtr pVbe, int mode, VbeCRTCInfoBlock *block)

+{

+    /*

+    Input:

+	AH    := 4Fh	Super VGA support

+	AL    := 02h	Set Super VGA video mode

+	BX    := Video mode

+	    D0-D8  := Mode number

+	    D9-D10 := Reserved (must be 0)

+	    D11    := 0 Use current default refresh rate

+		   := 1 Use user specified CRTC values for refresh rate

+	    D12-13	Reserved for VBE/AF (must be 0)

+	    D14    := 0 Use windowed frame buffer model

+		   := 1 Use linear/flat frame buffer model

+	    D15    := 0 Clear video memory

+		   := 1 Don't clear video memory

+	ES:DI := Pointer to VbeCRTCInfoBlock structure

+

+    Output: AX = Status

+	(All other registers are preserved)

+    */

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f02;

+    pVbe->pInt10->bx = mode;

+    if (block) {

+	pVbe->pInt10->bx |= 1 << 11;

+	memcpy(pVbe->memory, block, sizeof(VbeCRTCInfoBlock));

+	pVbe->pInt10->es = SEG_ADDR(pVbe->real_mode_base);

+	pVbe->pInt10->di = SEG_OFF(pVbe->real_mode_base);

+    } else

+	pVbe->pInt10->bx &= ~(1 << 11);

+

+    xf86ExecX86int10(pVbe->pInt10);

+

+    return (R16(pVbe->pInt10->ax) == 0x4f);

+}

+

+Bool

+VBEGetVBEMode(vbeInfoPtr pVbe, int *mode)

+{

+    /*

+    Input:

+	AH := 4Fh	Super VGA support

+	AL := 03h	Return current video mode

+

+    Output:

+	AX := Status

+	BX := Current video mode

+	(All other registers are preserved)

+    */

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f03;

+

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) == 0x4f) {

+	*mode = R16(pVbe->pInt10->bx);

+

+	return (TRUE);

+    }

+

+    return (FALSE);

+}

+

+VbeModeInfoBlock *

+VBEGetModeInfo(vbeInfoPtr pVbe, int mode)

+{

+    VbeModeInfoBlock *block = NULL;

+

+    bzero(pVbe->memory, sizeof(VbeModeInfoBlock));

+

+    /*

+    Input:

+	AH    := 4Fh	Super VGA support

+	AL    := 01h	Return Super VGA mode information

+	CX    := 	Super VGA video mode

+			(mode number must be one of those returned by Function 0)

+	ES:DI := Pointer to buffer

+

+    Output:

+	AX    := status

+	(All other registers are preserved)

+     */

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f01;

+    pVbe->pInt10->cx = mode;

+    pVbe->pInt10->es = SEG_ADDR(pVbe->real_mode_base);

+    pVbe->pInt10->di = SEG_OFF(pVbe->real_mode_base);

+    xf86ExecX86int10(pVbe->pInt10);

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (NULL);

+

+    block = calloc(sizeof(VbeModeInfoBlock), 1);

+

+    block->ModeAttributes = *(CARD16*)pVbe->memory;

+    block->WinAAttributes = ((char*)pVbe->memory)[2];

+    block->WinBAttributes = ((char*)pVbe->memory)[3];

+    block->WinGranularity = *(CARD16*)(((char*)pVbe->memory) + 4);

+    block->WinSize = *(CARD16*)(((char*)pVbe->memory) + 6);

+    block->WinASegment = *(CARD16*)(((char*)pVbe->memory) + 8);

+    block->WinBSegment = *(CARD16*)(((char*)pVbe->memory) + 10);

+    block->WinFuncPtr = *(CARD32*)(((char*)pVbe->memory) + 12);

+    block->BytesPerScanline = *(CARD16*)(((char*)pVbe->memory) + 16);

+

+    /* mandatory information for VBE 1.2 and above */

+    block->XResolution = *(CARD16*)(((char*)pVbe->memory) + 18);

+    block->YResolution = *(CARD16*)(((char*)pVbe->memory) + 20);

+    block->XCharSize = ((char*)pVbe->memory)[22];

+    block->YCharSize = ((char*)pVbe->memory)[23];

+    block->NumberOfPlanes = ((char*)pVbe->memory)[24];

+    block->BitsPerPixel = ((char*)pVbe->memory)[25];

+    block->NumberOfBanks = ((char*)pVbe->memory)[26];

+    block->MemoryModel = ((char*)pVbe->memory)[27];

+    block->BankSize = ((char*)pVbe->memory)[28];

+    block->NumberOfImages = ((char*)pVbe->memory)[29];

+    block->Reserved = ((char*)pVbe->memory)[30];

+

+    /* Direct color fields (required for direct/6 and YUV/7 memory models) */

+    block->RedMaskSize = ((char*)pVbe->memory)[31];

+    block->RedFieldPosition = ((char*)pVbe->memory)[32];

+    block->GreenMaskSize = ((char*)pVbe->memory)[33];

+    block->GreenFieldPosition = ((char*)pVbe->memory)[34];

+    block->BlueMaskSize = ((char*)pVbe->memory)[35];

+    block->BlueFieldPosition = ((char*)pVbe->memory)[36];

+    block->RsvdMaskSize = ((char*)pVbe->memory)[37];

+    block->RsvdFieldPosition = ((char*)pVbe->memory)[38];

+    block->DirectColorModeInfo = ((char*)pVbe->memory)[39];

+

+    /* Mandatory information for VBE 2.0 and above */

+    if (pVbe->version >= 0x200) {

+	block->PhysBasePtr = *(CARD32*)(((char*)pVbe->memory) + 40);

+	block->Reserved32 = *(CARD32*)(((char*)pVbe->memory) + 44);

+	block->Reserved16 = *(CARD16*)(((char*)pVbe->memory) + 48);

+

+	/* Mandatory information for VBE 3.0 and above */

+	if (pVbe->version >= 0x300) {

+	    block->LinBytesPerScanLine = *(CARD16*)(((char*)pVbe->memory) + 50);

+	    block->BnkNumberOfImagePages = ((char*)pVbe->memory)[52];

+	    block->LinNumberOfImagePages = ((char*)pVbe->memory)[53];

+	    block->LinRedMaskSize = ((char*)pVbe->memory)[54];

+	    block->LinRedFieldPosition = ((char*)pVbe->memory)[55];

+	    block->LinGreenMaskSize = ((char*)pVbe->memory)[56];

+	    block->LinGreenFieldPosition = ((char*)pVbe->memory)[57];

+	    block->LinBlueMaskSize = ((char*)pVbe->memory)[58];

+	    block->LinBlueFieldPosition = ((char*)pVbe->memory)[59];

+	    block->LinRsvdMaskSize = ((char*)pVbe->memory)[60];

+	    block->LinRsvdFieldPosition = ((char*)pVbe->memory)[61];

+	    block->MaxPixelClock = *(CARD32*)(((char*)pVbe->memory) + 62);

+	    memcpy(&block->Reserved2, ((char*)pVbe->memory) + 66, 188);

+	}

+	else

+	memcpy(&block->LinBytesPerScanLine, ((char*)pVbe->memory) + 50, 206);

+    }

+    else

+	memcpy(&block->PhysBasePtr, ((char*)pVbe->memory) + 40, 216);

+

+    return (block);

+}

+

+void

+VBEFreeModeInfo(VbeModeInfoBlock *block)

+{

+    free(block);

+}

+

+Bool

+VBESaveRestore(vbeInfoPtr pVbe, vbeSaveRestoreFunction function, 

+	       pointer *memory, int *size, int *real_mode_pages)

+{

+    /*

+    Input:

+	AH    := 4Fh	Super VGA support

+	AL    := 04h	Save/restore Super VGA video state

+	DL    := 00h	Return save/restore state buffer size

+	CX    := Requested states

+		D0 = Save/restore video hardware state

+		D1 = Save/restore video BIOS data state

+		D2 = Save/restore video DAC state

+		D3 = Save/restore Super VGA state

+

+    Output:

+	AX = Status

+	BX = Number of 64-byte blocks to hold the state buffer

+	(All other registers are preserved)

+

+

+    Input:

+	AH    := 4Fh	Super VGA support

+	AL    := 04h	Save/restore Super VGA video state

+	DL    := 01h	Save Super VGA video state

+	CX    := Requested states (see above)

+	ES:BX := Pointer to buffer

+

+    Output:

+	AX    := Status

+	(All other registers are preserved)

+

+

+    Input:

+	AH    := 4Fh	Super VGA support

+	AL    := 04h	Save/restore Super VGA video state

+	DL    := 02h	Restore Super VGA video state

+	CX    := Requested states (see above)

+	ES:BX := Pointer to buffer

+

+    Output:

+	AX     := Status

+	(All other registers are preserved)

+     */

+

+    if ((pVbe->version & 0xff00) > 0x100) {

+        int screen = pVbe->pInt10->scrnIndex;

+        if (function == MODE_QUERY ||

+	    (function == MODE_SAVE && !*memory)) {

+	    /* Query amount of memory to save state */

+

+	    pVbe->pInt10->num = 0x10;

+	    pVbe->pInt10->ax = 0x4f04;

+	    pVbe->pInt10->dx = 0;

+	    pVbe->pInt10->cx = 0x000f;

+	    xf86ExecX86int10(pVbe->pInt10);

+	    if (R16(pVbe->pInt10->ax) != 0x4f)

+	        return (FALSE);

+

+	    if (function == MODE_SAVE) {

+	        int npages = (R16(pVbe->pInt10->bx) * 64) / 4096 + 1;

+		if ((*memory = xf86Int10AllocPages(pVbe->pInt10, npages,

+						   real_mode_pages)) == NULL) {

+		    xf86DrvMsg(screen, X_ERROR,

+			       "Cannot allocate memory to save SVGA state.\n");

+		    return (FALSE);

+		}

+	    }

+	    *size = pVbe->pInt10->bx * 64;

+	}

+

+	/* Save/Restore Super VGA state */

+	if (function != MODE_QUERY) {

+	    

+	    if (!*memory) return FALSE;

+	    pVbe->pInt10->num = 0x10;

+	    pVbe->pInt10->ax = 0x4f04;

+	    switch (function) {

+	    case MODE_SAVE:

+	      pVbe->pInt10->dx = 1;

+	      break;

+	    case MODE_RESTORE:

+	      pVbe->pInt10->dx = 2;

+	      break;

+	    case MODE_QUERY:

+	      return FALSE;

+	    }

+	    pVbe->pInt10->cx = 0x000f;

+	    

+	    pVbe->pInt10->es = SEG_ADDR(*real_mode_pages);

+	    pVbe->pInt10->bx = SEG_OFF(*real_mode_pages);

+	    xf86ExecX86int10(pVbe->pInt10);

+	    return (R16(pVbe->pInt10->ax) == 0x4f);

+

+	}

+    }

+    return TRUE;

+}

+

+Bool

+VBEBankSwitch(vbeInfoPtr pVbe, unsigned int iBank, int window)

+{

+    /*

+    Input:

+	AH    := 4Fh	Super VGA support

+	AL    := 05h

+

+    Output:

+     */

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f05;

+    pVbe->pInt10->bx = window;

+    pVbe->pInt10->dx = iBank;

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (FALSE);

+

+    return (TRUE);

+}

+

+Bool

+VBESetGetLogicalScanlineLength(vbeInfoPtr pVbe, vbeScanwidthCommand command,

+				int width, int *pixels, int *bytes, int *max)

+{

+    if (command < SCANWID_SET || command > SCANWID_GET_MAX)

+	return (FALSE);

+

+    /*

+    Input:

+	AX := 4F06h VBE Set/Get Logical Scan Line Length

+	BL := 00h Set Scan Line Length in Pixels

+	   := 01h Get Scan Line Length

+	   := 02h Set Scan Line Length in Bytes

+	   := 03h Get Maximum Scan Line Length

+	CX := If BL=00h Desired Width in Pixels

+	      If BL=02h Desired Width in Bytes

+	      (Ignored for Get Functions)

+

+    Output:

+	AX := VBE Return Status

+	BX := Bytes Per Scan Line

+	CX := Actual Pixels Per Scan Line

+	      (truncated to nearest complete pixel)

+	DX := Maximum Number of Scan Lines

+     */

+

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f06;

+    pVbe->pInt10->bx = command;

+    if (command == SCANWID_SET || command == SCANWID_SET_BYTES)

+	pVbe->pInt10->cx = width;

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (FALSE);

+

+    if (command == SCANWID_GET || command == SCANWID_GET_MAX) {

+	if (pixels)

+	    *pixels = R16(pVbe->pInt10->cx);

+	if (bytes)

+	    *bytes = R16(pVbe->pInt10->bx);

+	if (max)

+	    *max = R16(pVbe->pInt10->dx);

+    }

+

+    return (TRUE);

+}

+

+Bool

+VBESetDisplayStart(vbeInfoPtr pVbe, int x, int y, Bool wait_retrace)

+{

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f07;

+    pVbe->pInt10->bx = wait_retrace ? 0x80 : 0x00;

+    pVbe->pInt10->cx = x;

+    pVbe->pInt10->dx = y;

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (FALSE);

+

+    return (TRUE);

+}

+

+Bool

+VBEGetDisplayStart(vbeInfoPtr pVbe, int *x, int *y)

+{

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f07;

+    pVbe->pInt10->bx = 0x01;

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (FALSE);

+

+    *x = pVbe->pInt10->cx;

+    *y = pVbe->pInt10->dx;

+

+    return (TRUE);

+}

+

+int

+VBESetGetDACPaletteFormat(vbeInfoPtr pVbe, int bits)

+{

+    /*

+    Input:

+	AX := 4F08h VBE Set/Get Palette Format

+	BL := 00h Set DAC Palette Format

+	   := 01h Get DAC Palette Format

+	BH := Desired bits of color per primary

+	      (Set DAC Palette Format only)

+

+    Output:

+	AX := VBE Return Status

+	BH := Current number of bits of color per primary

+     */

+

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f08;

+    if (!bits)

+	pVbe->pInt10->bx = 0x01;

+    else 

+	pVbe->pInt10->bx = (bits & 0x00ff) << 8;

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (0);

+

+    return (bits != 0 ? bits : (pVbe->pInt10->bx >> 8) & 0x00ff);

+}

+

+CARD32 *

+VBESetGetPaletteData(vbeInfoPtr pVbe, Bool set, int first, int num,

+		      CARD32 *data, Bool secondary, Bool wait_retrace)

+{

+    /*

+    Input:

+    (16-bit)

+	AX    := 4F09h VBE Load/Unload Palette Data

+	BL    := 00h Set Palette Data

+	      := 01h Get Palette Data

+	      := 02h Set Secondary Palette Data

+	      := 03h Get Secondary Palette Data

+	      := 80h Set Palette Data during Vertical Retrace

+	CX    := Number of palette registers to update (to a maximum of 256)

+	DX    := First of the palette registers to update (start)

+	ES:DI := Table of palette values (see below for format)

+

+    Output:

+	AX    := VBE Return Status

+

+

+    Input:

+    (32-bit)

+	BL     := 00h Set Palette Data

+	       := 80h Set Palette Data during Vertical Retrace

+	CX     := Number of palette registers to update (to a maximum of 256)

+	DX     := First of the palette registers to update (start)

+	ES:EDI := Table of palette values (see below for format)

+	DS     := Selector for memory mapped registers

+     */

+

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f09;

+    if (!secondary)

+	pVbe->pInt10->bx = set && wait_retrace ? 0x80 : set ? 0 : 1;

+    else

+	pVbe->pInt10->bx = set ? 2 : 3;

+    pVbe->pInt10->cx = num;

+    pVbe->pInt10->dx = first;

+    pVbe->pInt10->es = SEG_ADDR(pVbe->real_mode_base);

+    pVbe->pInt10->di = SEG_OFF(pVbe->real_mode_base);

+    if (set)

+	memcpy(pVbe->memory, data, num * sizeof(CARD32));

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (NULL);

+

+    if (set)

+	return (data);

+

+    data = malloc(num * sizeof(CARD32));

+    memcpy(data, pVbe->memory, num * sizeof(CARD32));

+

+    return (data);

+}

+

+VBEpmi *

+VBEGetVBEpmi(vbeInfoPtr pVbe)

+{

+    VBEpmi *pmi;

+

+    /*

+    Input:

+	AH    := 4Fh	Super VGA support

+	AL    := 0Ah	Protected Mode Interface

+	BL    := 00h	Return Protected Mode Table

+

+    Output:

+	AX    := Status

+	ES    := Real Mode Segment of Table

+	DI    := Offset of Table

+	CX    := Lenght of Table including protected mode code in bytes (for copying purposes)

+	(All other registers are preserved)

+     */

+

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f0a;

+    pVbe->pInt10->bx = 0;

+    pVbe->pInt10->di = 0;

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (NULL);

+

+    pmi = malloc(sizeof(VBEpmi));

+    pmi->seg_tbl = R16(pVbe->pInt10->es);

+    pmi->tbl_off = R16(pVbe->pInt10->di);

+    pmi->tbl_len = R16(pVbe->pInt10->cx);

+

+    return (pmi);

+}

+

+#if 0

+vbeModeInfoPtr

+VBEBuildVbeModeList(vbeInfoPtr pVbe, VbeInfoBlock *vbe)

+{

+    vbeModeInfoPtr ModeList = NULL;

+

+    int i = 0;

+    while (vbe->VideoModePtr[i] != 0xffff) {

+	vbeModeInfoPtr m;

+	VbeModeInfoBlock *mode;

+	int id = vbe->VideoModePtr[i++];

+	int bpp;

+

+	if ((mode = VBEGetModeInfo(pVbe, id)) == NULL)

+	    continue;

+

+ 	bpp = mode->BitsPerPixel;

+

+	m = xnfcalloc(sizeof(vbeModeInfoRec),1);

+	m->width = mode->XResolution;

+	m->height = mode->YResolution;

+	m->bpp = bpp;

+	m->n = id;

+	m->next = ModeList;

+

+	xf86DrvMsgVerb(pVbe->pInt10->scrnIndex, X_PROBED, 3,

+		       "BIOS reported VESA mode 0x%x: x:%i y:%i bpp:%i\n",

+		       m->n, m->width, m->height, m->bpp);

+

+	ModeList = m;

+

+	VBEFreeModeInfo(mode);

+    }

+    return ModeList;

+}

+

+unsigned short 

+VBECalcVbeModeIndex(vbeModeInfoPtr m, DisplayModePtr mode, int bpp)

+{

+    while (m) {

+	if (bpp == m->bpp 

+	    && mode->HDisplay == m->width 

+	    && mode->VDisplay == m->height)

+	    return m->n;

+	m = m->next;

+    }

+    return 0;

+}

+#endif

+

+void

+VBEVesaSaveRestore(vbeInfoPtr pVbe, vbeSaveRestorePtr vbe_sr,

+		  vbeSaveRestoreFunction function)

+{

+    Bool SaveSucc = FALSE;

+

+    if (VBE_VERSION_MAJOR(pVbe->version) > 1

+	&& (function == MODE_SAVE || vbe_sr->pstate)) {

+	if (function == MODE_RESTORE)

+	    memcpy(vbe_sr->state, vbe_sr->pstate, vbe_sr->stateSize);

+	ErrorF("VBESaveRestore\n");

+	if ((VBESaveRestore(pVbe,function,

+			    (pointer)&vbe_sr->state,

+			    &vbe_sr->stateSize,&vbe_sr->statePage))) {

+	    if (function == MODE_SAVE) {

+		SaveSucc = TRUE;

+		vbe_sr->stateMode = -1; /* invalidate */

+		/* don't rely on the memory not being touched */

+		if (vbe_sr->pstate == NULL)

+		    vbe_sr->pstate = malloc(vbe_sr->stateSize);

+		memcpy(vbe_sr->pstate, vbe_sr->state, vbe_sr->stateSize);

+	    }

+	    ErrorF("VBESaveRestore done with success\n");

+	    return;

+	}

+	ErrorF("VBESaveRestore done\n");

+    } 

+    

+    if (function == MODE_SAVE && !SaveSucc)

+	    (void)VBEGetVBEMode(pVbe, &vbe_sr->stateMode);

+	

+    if (function == MODE_RESTORE && vbe_sr->stateMode != -1)

+	    VBESetVBEMode(pVbe, vbe_sr->stateMode, NULL);

+

+}

+

+int

+VBEGetPixelClock(vbeInfoPtr pVbe, int mode, int clock)

+{

+    /*

+    Input:

+	AX := 4F0Bh VBE Get Pixel Clock

+	BL := 00h Get Pixel Clock

+	ECX := pixel clock in units of Hz

+        DX := mode number

+     

+    Output:

+	AX := VBE Return Status

+	ECX := Closest pixel clock

+     */

+

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f0b;

+    pVbe->pInt10->bx = 0x00;

+    pVbe->pInt10->cx = clock;

+    pVbe->pInt10->dx = mode;

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if (R16(pVbe->pInt10->ax) != 0x4f)

+	return (0);

+

+    return (pVbe->pInt10->cx);

+}

+

+Bool

+VBEDPMSSet(vbeInfoPtr pVbe, int mode)

+{

+    /*

+    Input:

+	AX := 4F10h DPMS

+	BL := 01h Set Display Power State

+	BH := requested power state

+     

+    Output:

+	AX := VBE Return Status

+     */

+

+    pVbe->pInt10->num = 0x10;

+    pVbe->pInt10->ax = 0x4f10;

+    pVbe->pInt10->bx = 0x01;

+    switch (mode) {

+    case DPMSModeOn:

+	break;

+    case DPMSModeStandby:

+	pVbe->pInt10->bx |= 0x100;

+	break;

+    case DPMSModeSuspend:

+	pVbe->pInt10->bx |= 0x200;

+	break;

+    case DPMSModeOff:

+	pVbe->pInt10->bx |= 0x400;

+	break;

+    }

+    xf86ExecX86int10(pVbe->pInt10);

+    return (R16(pVbe->pInt10->ax) == 0x4f);

+}

+

+void

+VBEInterpretPanelID(int scrnIndex, struct vbePanelID *data)

+{

+    ScrnInfoPtr pScrn = xf86Screens[scrnIndex];

+    DisplayModePtr mode;

+    const float PANEL_HZ = 60.0;

+

+    if (!data)

+	return;

+

+    xf86DrvMsg(scrnIndex, X_INFO, "PanelID returned panel resolution %dx%d\n",

+	    data->hsize, data->vsize);

+

+    if (pScrn->monitor->nHsync || pScrn->monitor->nVrefresh)

+	return;

+

+    mode = xf86CVTMode(data->hsize, data->vsize, PANEL_HZ, 1, 0);

+

+    pScrn->monitor->nHsync = 1;

+    pScrn->monitor->hsync[0].lo = 31.5;

+    pScrn->monitor->hsync[0].hi = (float)mode->Clock / (float)mode->HTotal;

+    pScrn->monitor->nVrefresh = 1;

+    pScrn->monitor->vrefresh[0].lo = 56.0;

+    pScrn->monitor->vrefresh[0].hi =

+	(float)mode->Clock*1000.0 / (float)mode->HTotal / (float)mode->VTotal;

+

+    free(mode);

+}

+

+struct vbePanelID *

+VBEReadPanelID(vbeInfoPtr pVbe)

+{

+    int RealOff = pVbe->real_mode_base;

+    pointer page = pVbe->memory;

+    void *tmp = NULL;

+    int screen = pVbe->pInt10->scrnIndex;

+

+    pVbe->pInt10->ax = 0x4F11;

+    pVbe->pInt10->bx = 0x01;

+    pVbe->pInt10->cx = 0;

+    pVbe->pInt10->dx = 0;

+    pVbe->pInt10->es = SEG_ADDR(RealOff);

+    pVbe->pInt10->di = SEG_OFF(RealOff);

+    pVbe->pInt10->num = 0x10;

+

+    xf86ExecX86int10(pVbe->pInt10);

+

+    if ((pVbe->pInt10->ax & 0xff) != 0x4f) {

+	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE PanelID invalid\n");

+	goto error;

+    }

+

+    switch (pVbe->pInt10->ax & 0xff00) {

+    case 0x0:

+	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE PanelID read successfully\n");

+	tmp = xnfalloc(32); 

+	memcpy(tmp, page, 32); 

+	break;

+    case 0x100:

+	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE PanelID read failed\n");       

+	break;

+    default:

+	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE PanelID unknown failure %i\n",

+		       pVbe->pInt10->ax & 0xff00);

+	break;

+    }

+

+error:

+    return tmp;

+}