346 lines
11 KiB
C
346 lines
11 KiB
C
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/******************************************************************************
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* name: cnvinfo.c
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*
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* description: Routines to convert old mga.inf format to the current
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* revision
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*
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* designed: Christian Toutant
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* last modified: $Author:
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*
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* version: $Id:
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*
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*
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* char * mtxConvertMgaInf( char *)
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*
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******************************************************************************/
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#include "switches.h"
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#include <stdlib.h>
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#include <string.h>
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#include "bind.h"
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#include "defbind.h"
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#include "defoldv.h"
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/* Prototypes */
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word findInfoPrec(header *hdr, word i);
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void cnvBrdInfo_101(general_info *dst, general_info_101 *src);
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word sizeOfBoard(header *hdr, word i);
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char *convertRev101(char *dst, char *src);
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char *mtxConvertMgaInf( char *inf );
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#ifdef WINDOWS_NT
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#if defined(ALLOC_PRAGMA)
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#pragma alloc_text(PAGE,findInfoPrec)
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#pragma alloc_text(PAGE,cnvBrdInfo_101)
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#pragma alloc_text(PAGE,sizeOfBoard)
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#pragma alloc_text(PAGE,convertRev101)
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#pragma alloc_text(PAGE,mtxConvertMgaInf)
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#endif
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#endif /* #ifdef WINDOWS_NT */
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extern char DefaultVidset[];
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# define GENERAL_INFO(h, i) ( (general_info *) ( (char *)h + ((header *)h)->BoardPtr[i] ) )
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# define GENERAL_INFO101(h, i) ( (general_info_101 *) ( (char *)h + ((header *)h)->BoardPtr[i] ) )
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#ifdef WINDOWS_NT
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extern ULONG ulNewInfoSize;
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extern PVOID pMgaDeviceExtension;
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PVOID AllocateSystemMemory(ULONG NumberOfBytes);
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#endif /* #ifdef WINDOWS_NT */
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/*----------------------------------------------------------------------------
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| name: findInfoPrec
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| description: check if a previous board pointer have the same offset
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| designed: Christian Toutant, august 26, 1993
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| last modified:
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| parameters: header *hdr header for search
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| word i current board pointer
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| modifies: none
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| calls:
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| returns: word index of previous board whit the same offset
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| or NUMBER_BOARD_MAX if no found.
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-----------------------------------------------------------------------------*/
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word findInfoPrec(header *hdr, word i)
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{
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word j;
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for (j = 0; j < i; j++)
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if (hdr->BoardPtr[i] == hdr->BoardPtr[j]) return j;
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return NUMBER_BOARD_MAX;
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}
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/*----------------------------------------------------------------------------
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| name: cnvBrdInfo_101
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| description: convert general_info ver 101 to general_info ver 102 (current)
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| designed: Christian Toutant, august 26, 1993
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| last modified:
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| parameters: general_info *dst pointer to destination general_info (v.102)
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| general_info_101 *src pointer to source general_info (v.101)
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| modifies: none
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| calls:
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| returns: bool
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|note : This function must be change when we pass to ver 103. The conversion
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| will be from v. 101 to v. 103.
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-----------------------------------------------------------------------------*/
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void cnvBrdInfo_101(general_info *dst, general_info_101 *src)
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{
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word i, j;
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Vidparm_101 *srcVidParm;
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Vidparm *dstVidParm;
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dst->MapAddress = src->MapAddress ;
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dst->BitOperation8_16 = src->BitOperation8_16 ;
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dst->DmaEnable = src->DmaEnable ;
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dst->DmaChannel = src->DmaChannel ;
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dst->DmaType = src->DmaType ;
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dst->DmaXferWidth = src->DmaXferWidth ;
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dst->NumVidparm = src->NumVidparm ;
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strncpy(dst->MonitorName, src->MonitorName, 64);
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for (i = 0; i < NUMBER_OF_RES; i++)
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dst->MonitorSupport[i] = src->MonitorSupport[i];
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srcVidParm = (Vidparm_101 *)(((char *)src) + sizeof(general_info_101));
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dstVidParm = (Vidparm*)(((char *)dst) + sizeof(general_info));
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for (i = 0; i < src->NumVidparm; i++)
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{
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dstVidParm[i].Resolution = srcVidParm[i].Resolution;
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dstVidParm[i].PixWidth = srcVidParm[i].PixWidth;
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for (j = 0; j < 3; j++)
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{
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dstVidParm[i].VidsetPar[j].PixClock = srcVidParm[i].VidsetPar[j].PixClock;
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dstVidParm[i].VidsetPar[j].HDisp = srcVidParm[i].VidsetPar[j].HDisp ;
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dstVidParm[i].VidsetPar[j].HFPorch = srcVidParm[i].VidsetPar[j].HFPorch ;
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dstVidParm[i].VidsetPar[j].HSync = srcVidParm[i].VidsetPar[j].HSync ;
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dstVidParm[i].VidsetPar[j].HBPorch = srcVidParm[i].VidsetPar[j].HBPorch ;
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dstVidParm[i].VidsetPar[j].HOvscan = srcVidParm[i].VidsetPar[j].HOvscan ;
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dstVidParm[i].VidsetPar[j].VDisp = srcVidParm[i].VidsetPar[j].VDisp ;
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dstVidParm[i].VidsetPar[j].VFPorch = srcVidParm[i].VidsetPar[j].VFPorch ;
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dstVidParm[i].VidsetPar[j].VSync = srcVidParm[i].VidsetPar[j].VSync ;
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dstVidParm[i].VidsetPar[j].VBPorch = srcVidParm[i].VidsetPar[j].VBPorch ;
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dstVidParm[i].VidsetPar[j].VOvscan = srcVidParm[i].VidsetPar[j].VOvscan ;
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dstVidParm[i].VidsetPar[j].OvscanEnable = srcVidParm[i].VidsetPar[j].OvscanEnable;
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dstVidParm[i].VidsetPar[j].InterlaceEnable= srcVidParm[i].VidsetPar[j].InterlaceEnable;
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dstVidParm[i].VidsetPar[j].HsyncPol = 0;
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dstVidParm[i].VidsetPar[j].VsyncPol = 0;
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}
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}
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}
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/*----------------------------------------------------------------------------
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| name: sizeOfBoard
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| description: calculate the size of memory for one board (without the
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| size of the header).
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| designed: Christian Toutant, august 26, 1993
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| last modified:
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| parameters: header *hdr header info
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| word index of the board to calculate.
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| modifies: none
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| calls:
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| returns: word size needed for the ith board or 0 if no
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| board.
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|note : This function must be change when we pass to ver 103. The size
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| will be for v. 103.
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-----------------------------------------------------------------------------*/
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word sizeOfBoard(header *hdr, word i)
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{
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word sizeBoard, j;
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/* if no board, return size of 0 */
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if ( hdr->BoardPtr[i] == (short)-1 ) return 0;
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/* if a board farther have the same address data, return the
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good size only for the last one and 0 for the other
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*/
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for (j = i + 1 ; j < NUMBER_BOARD_MAX; j++)
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if (hdr->BoardPtr[i] == hdr->BoardPtr[j]) return 0;
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/* calculate the size of this board */
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sizeBoard = sizeof(general_info);
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sizeBoard += sizeof(Vidparm) * GENERAL_INFO101(hdr, i)->NumVidparm;
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return sizeBoard;
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}
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/*----------------------------------------------------------------------------
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| name: convertRev101
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| description: convert from mga.inf v.101 to mga.inf v.102
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| designed: Christian Toutant, august 26, 1993
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| last modified:
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| parameters: char *dst pointer to memory destination for new mga.inf
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| enough must be allocated.
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| char *src pointer to the mga.inf v.101
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| modifies: none
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| calls:
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| returns: pointer to the destination mga.inf pointer
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|note : This function must be change when we pass to ver 103. The conversion
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| will be from v. 101 to v. 103.
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-----------------------------------------------------------------------------*/
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char *convertRev101(char *dst, char *src)
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{
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word i, j, brdPtr;
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header *srcHdr, *dstHdr;
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srcHdr = (header *)src;
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dstHdr = (header *)dst;
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brdPtr = sizeof(header);
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for (i = 0; i < NUMBER_BOARD_MAX; i ++)
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{
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if (srcHdr->BoardPtr[i] == (short)-1)
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dstHdr->BoardPtr[i] = -1;
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else
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{
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if ( (j = findInfoPrec(srcHdr, i)) < NUMBER_BOARD_MAX )
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dstHdr->BoardPtr[i] = dstHdr->BoardPtr[j];
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else
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{
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dstHdr->BoardPtr[i] = brdPtr;
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cnvBrdInfo_101( GENERAL_INFO(dstHdr, i),GENERAL_INFO101(srcHdr, i) );
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brdPtr += sizeOfBoard(srcHdr, i);
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}
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}
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}
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return dst;
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}
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/*----------------------------------------------------------------------------
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| name: mtxConvertMgaInf
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| description: convert a old mga.inf definition to the current one.
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| this function allocate memory for the new mga.inf and
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| free the memory of the old one.
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| designed: Christian Toutant, august 26, 1993
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| last modified:
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| parameters: char *inf pointer to the old mga.inf
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| modifies: free memory pointed by inf.
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| calls:
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| returns: pointer to the new mga.inf or 0 if error in conversion.
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| note: the memory pointer by inf is free also if an error
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-----------------------------------------------------------------------------*/
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char *mtxConvertMgaInf( char *inf )
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{
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char *newInfo;
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word size_newInfo, i;
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word rev;
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header *hdr = (header *)inf;
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rev = hdr->Revision;
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size_newInfo = sizeof(header);
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for (i = 0; i < NUMBER_BOARD_MAX; i ++)
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{
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switch(rev)
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{
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case 101:
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if (
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(hdr->BoardPtr[i] != -1) &&
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(GENERAL_INFO101(hdr, i)->NumVidparm < 0)
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)
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{
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#ifndef WINDOWS_NT
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/* In Windows NT, inf points to RequestPacket.InputBuffer:
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don't free it! */
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free ( inf );
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#endif
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return DefaultVidset;
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}
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size_newInfo += sizeOfBoard(hdr, i);
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break;
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default:
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#ifndef WINDOWS_NT
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/* In Windows NT, inf points to RequestPacket.InputBuffer:
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don't free it! */
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free( inf );
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#endif
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return DefaultVidset;
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}
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}
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#ifdef WINDOWS_NT
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if ((newInfo = (PUCHAR)AllocateSystemMemory(size_newInfo)) == (PUCHAR)NULL)
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{
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/* Not enough memory */
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return DefaultVidset;
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}
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#else
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if ( (newInfo = (char *)malloc(size_newInfo)) == (char *)0 )
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{
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/* Not enough memory */
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free( inf );
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return DefaultVidset;
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}
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#endif /* #ifdef WINDOWS_NT */
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hdr = (header *)newInfo;
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hdr->Revision = (short)VERSION_NUMBER;
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strncpy(hdr->IdString, ((header *)inf)->IdString, 32);
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switch(rev)
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{
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case 101:
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newInfo = convertRev101(newInfo, inf);
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break;
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default:
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#ifdef WINDOWS_NT
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VideoPortReleaseBuffer(pMgaDeviceExtension, newInfo);
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#else
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free(newInfo);
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#endif
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return DefaultVidset;
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break;
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}
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#ifdef WINDOWS_NT
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/* We want to know the size of our new buffer in IOCTL_VIDEO_MTX_INITIALIZE_MGA */
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ulNewInfoSize = (ULONG) size_newInfo;
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#endif
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#ifndef WINDOWS_NT
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/* In Windows NT, inf points to RequestPacket.InputBuffer: don't free it! */
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free ( inf );
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#endif
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return newInfo;
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}
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