42ad9a0be4
work now that we have more info (Designing Cards and Drivers for the Macintosh Family Hardware.
718 lines
16 KiB
C
718 lines
16 KiB
C
/*-
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* Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo,
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* Michael L. Finch, Bradley A. Grantham, and
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* Lawrence A. Kesteloot
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Alice Group.
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* 4. The names of the Alice Group or any of its members may not be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: nubus.c,v 1.5 1994/02/22 01:11:33 briggs Exp $
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*
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*/
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/*
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MF 8-24-93 first hack at a real nubus driver
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/cpu.h>
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#include <sys/device.h>
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#include "nubus.h"
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/* TODO:
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be able to do "memcpy"s from the board, then i won't
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have to fill in structures by hand.
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get rid of extra crap calls that are useless
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I think the directory stuff is bogus, I need to find
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that other magic resource that tells me fancy stuff,
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I could be wrong.
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*/
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struct dir *getRsrcByNum(struct slot *Slot,struct dir *p,int num,struct dir *out,int max);
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int print_rsrcinfo(struct slot *Slot,struct dir *p);
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char *GetStringInfo(struct slot *Slot,unsigned char *data1,char *space,int len);
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int printTree(struct slot *Slot,struct dir *root);
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long GetLongInfo(struct slot *,unsigned char *data);
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int FindMagic(unsigned long *data);
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int GetHeader(struct slot *Slot,unsigned long pos);
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unsigned char *IncPtr(struct slot *Slot,unsigned char *p,int size);
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char GetByteInfo(struct slot *Slot,unsigned char *data);
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int GetRsrcs(struct slot *Slot,unsigned char *p,struct dir *Dir,int maxdir);
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unsigned char *getDataAtRsrc(struct slot *Slot,struct dir *p,int num);
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short GetShortInfo(struct slot *Slot,unsigned char *data);
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/* this is the main I used in macos to get stuff out */
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#if 0
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main()
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{
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unsigned long *rawImage;
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struct imagedata image;
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struct dir *Dir;
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struct dir dirSpace[15];
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struct dir dirSpace2[10];
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unsigned long length;
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unsigned long offset;
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unsigned long nextoffset;
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int pos,i;
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unsigned char *data;
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struct slot Slot;
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// firstHeader=(char *)0xbfffff-40;
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data=(char *)SLOTADDR-100;
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for(i=0;i<100;i++)
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if (Slot.size=FindMagic( (long *)(data+i) ) )
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{
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/* printf("magic found at i=%d\n",i); */
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GetHeader(&Slot,SLOTADDR-100+i);
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break;
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}
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printf("main directory\n");
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print_rsrcinfo(&Slot,Slot.mainDir );
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Dir=getRsrcByNum(&Slot,Slot.mainDir,128,dirSpace,15);
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printf("image directory\n");
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print_rsrcinfo(&Slot,Dir);
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printTree(&Slot,Slot.mainDir);
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// get image param stuff
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Dir=getRsrcByNum(&Slot,Dir,128,dirSpace2,10);
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/* hopefully video mode params */
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rawImage=getDataAtRsrc(&Slot,Dir,1);
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image.whatTheHellIsThis=GetLongInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,4);
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image.offset=GetLongInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,4);
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image.rowbytes=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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image.top=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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image.left=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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image.bottom=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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image.right=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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image.version=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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image.packType=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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image.packSize=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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image.hRes=GetLongInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,4);
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image.vRes=GetLongInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,4);
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image.pixelType=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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image.pixelSize=GetShortInfo(&Slot,rawImage);
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rawImage=IncPtr(&Slot,rawImage,2);
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}
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#endif /* main */
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int GetHeader(struct slot *Slot,unsigned long pos)
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{
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/* the pos passed in is the pos that the magic testvalue was found at */
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unsigned char *p;
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unsigned char *dirBase;
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switch (Slot->size)
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{
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case 1: /* char */
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pos-=14;
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break;
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case 2:
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pos-=28;
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break;
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case 4:
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pos-=56;
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break;
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}
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p=(unsigned char *)pos;
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Slot->head.offset=(0xff000000 | (unsigned long) GetLongInfo(Slot,p));
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p=IncPtr(Slot,p,4);
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Slot->head.length=GetLongInfo(Slot,p);
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p=IncPtr(Slot,p,4);
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Slot->head.crc=GetLongInfo(Slot,p);
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p=IncPtr(Slot,p,4);
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Slot->head.romrev=GetByteInfo(Slot,p);
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p=IncPtr(Slot,p,1);
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Slot->head.format=GetByteInfo(Slot,p);
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p=IncPtr(Slot,p,1);
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Slot->head.tst=GetLongInfo(Slot,p);
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p=IncPtr(Slot,p,4);
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Slot->head.reserved=GetByteInfo(Slot,p);
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p=IncPtr(Slot,p,1);
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/* byte lanes should be used instead of size, this hasn't bitten me yet */
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Slot->head.bytelane=GetByteInfo(Slot,p);
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p=IncPtr(Slot,p,1);
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dirBase=(unsigned char *)(pos+Slot->head.offset*Slot->size);
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GetRsrcs(Slot,dirBase,Slot->mainDir,15);
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return 0;
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}
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printTree(struct slot *Slot,struct dir *root)
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{
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struct dir *b;
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unsigned char *c;
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struct dir *d;
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unsigned char *e;
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struct dir *f;
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unsigned char *g;
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struct dir *h;
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unsigned char *i;
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unsigned char *j;
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unsigned char *k;
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struct dir bSpace[15];
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struct dir cSpace[15];
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struct dir dSpace[15];
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struct dir fSpace[15];
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struct dir hSpace[15];
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char space[40];
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/* to get a good idea of what is happening here you should get the
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"slots" program from apple dts, it is so cool. Its the next
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best thing to actual docs, which i didn't have...
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*/
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b=getRsrcByNum(Slot,root,1,bSpace,15);
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c=getDataAtRsrc(Slot,b,2);
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d=getRsrcByNum(Slot,b,0x24,dSpace,15);
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e=getDataAtRsrc(Slot,d,1);
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f=getRsrcByNum(Slot,root,0x80,fSpace,15);
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g=getDataAtRsrc(Slot,f,2);
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j=getDataAtRsrc(Slot,f,0x0a);
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k=getDataAtRsrc(Slot,f,0x0b);
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h=getRsrcByNum(Slot,root,0xa0,hSpace,15);
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i=getDataAtRsrc(Slot,h,2);
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printf("A\n");
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print_rsrcinfo(Slot,root);
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printf("B\n");
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print_rsrcinfo(Slot,b);
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printf("C\n");
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printf("%s\n",GetStringInfo(Slot,c,space,40));
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printf("D\n");
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print_rsrcinfo(Slot,d);
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printf("E\n");
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printf("%s\n",GetStringInfo(Slot,e,space,40));
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printf("F\n");
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print_rsrcinfo(Slot,f);
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printf("g\n");
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printf("%s\n",GetStringInfo(Slot,g,space,40));
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printf("Video RAM Base %lx\n", GetLongInfo(Slot,j) );
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printf("Video RAM Length %lx\n", GetLongInfo(Slot,k) );
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printf("H\n");
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print_rsrcinfo(Slot,h);
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printf("I\n");
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printf("%s\n",GetStringInfo(Slot,i,space,40));
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}
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print_rsrcinfo(struct slot *Slot,struct dir *p)
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{
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int i=0;
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int failsafe=20;
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if (p==NULL) return 1;
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while(failsafe--)
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{
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printf("RSRC %02x :%06lx\n",p[i].rsrc,p[i].offset);
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if (p[i].rsrc == 0xff) break;
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i++;
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}
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}
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struct dir *getRsrcByNum(struct slot *Slot,struct dir *p,int num,struct dir *out,int max)
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{
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int i=0;
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int failsafe=20;
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long nextoffset=0;
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unsigned char *base;
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if (p==NULL) return NULL;
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base=getDataAtRsrc(Slot,p,num);
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if (NULL==base) return NULL;
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GetRsrcs(Slot,base,out,max);
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return out;
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}
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char *GetStringInfo(struct slot *Slot,unsigned char *data,char *space,int len)
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{
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int i;
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char *p=space;
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if (NULL==data) return "";
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for(i=0;(i<len) && *data;i++,p++)
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{
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*p=GetByteInfo(Slot,data);
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data=IncPtr(Slot,data,1);
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}
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*p='\0';
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return space;
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}
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long GetLongInfo(struct slot *Slot,unsigned char *data)
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{
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long ret=0;
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switch (Slot->size)
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{
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case 1:
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ret= (unsigned long)data[0]<<24 | (unsigned long)data[1]<<16 | (unsigned long)data[2]<<8 |data[3] ;
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break;
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case 2:
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ret= (unsigned long)data[0]<<24 | (unsigned long)data[2]<<16 | (unsigned long)data[4]<<8 |data[6] ;
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break;
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case 4:
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ret= (unsigned long)data[0]<<24 | (unsigned long)data[4]<<16 | (unsigned long)data[8]<<8 |data[12] ;
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break;
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}
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return ret;
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}
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short GetShortInfo(struct slot *Slot,unsigned char *data)
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{
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short ret;
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switch (Slot->size)
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{
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case 1:
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ret= (unsigned long)data[0]<<8 |data[1] ;
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break;
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case 2:
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ret= (unsigned long)data[0]<<8 |data[2] ;
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break;
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case 4:
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ret= (unsigned long)data[0]<<8 |data[4] ;
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break;
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}
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return ret;
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}
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char GetByteInfo(struct slot *Slot,unsigned char *data)
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{
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/* boring .... */
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return data[0];
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}
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int FindMagic(unsigned long data[])
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{
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unsigned short *data2=(unsigned short *)data;
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unsigned char *data3=(unsigned char *)data;
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/* char data */
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if (((data3[0] )== 0x5a) &&
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((data3[1] )== 0x93) &&
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((data3[2] )== 0x2b) &&
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((data3[3] )== 0xc7) )
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return 1;
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/* short data */
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if (((data3[0] )== 0x5a) &&
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((data3[2] )== 0x93) &&
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((data3[4] )== 0x2b) &&
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((data3[6] )== 0xc7) )
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return 2;
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/* long data */
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if (((data3[0] )== 0x5a) &&
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((data3[4] )== 0x93) &&
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((data3[8] )== 0x2b) &&
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((data3[12] )== 0xc7) )
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return 4;
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return 0;
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}
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unsigned char *IncPtr(struct slot *Slot,unsigned char *p,int size)
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{
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/* MF make this a macro someday */
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unsigned char *tmp=p;
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tmp=tmp+size*Slot->size;
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return tmp;
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}
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int GetRsrcs(struct slot *Slot,unsigned char *p,struct dir *Dir,int maxdir)
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{
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int i=0;
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/* MF if you alias memory here you will be fucked. */
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if (p==NULL) return;
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while(maxdir--)
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{
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long entry;
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entry=GetLongInfo(Slot,p);
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Dir[i].rsrc=(entry & 0xff000000) >> 24;
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Dir[i].offset=entry & 0x00ffffff;
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Dir[i].base=(unsigned long)p;
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p=IncPtr(Slot,p,4);
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if (Dir[i].rsrc==0xff)
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break;
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i++;
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}
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return 0;
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}
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unsigned char *getDataAtRsrc(struct slot *Slot,struct dir *p,int num)
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{
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int i=0;
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int failsafe=num;
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long nextoffset=0;
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unsigned char *base;
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if (p==NULL) return NULL;
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while(failsafe--)
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{
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if (p[i].rsrc==num)
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{
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base= (unsigned char *)( (unsigned long)Slot->size*p[i].offset+
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(unsigned long)p[i].base );
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return base;
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}
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if (p[i].rsrc==0xff) return NULL;
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i++;
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}
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return NULL;
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}
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int InitNubusSlot(unsigned long slotaddr,struct slot *newSlot)
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{
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int i=0;
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struct slot Slot;
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struct dir *b;
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struct dir bSpace[5];
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struct dir *d;
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struct dir dSpace[5];
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struct dir *f;
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struct dir fSpace[5];
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unsigned char *c;
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unsigned char *e;
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unsigned char *g;
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unsigned char *data;
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unsigned long slotend;
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slotend=slotaddr+NBMEMSIZE-1;
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data=(unsigned char *)slotend-100;
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for(i=0;i<100;i++)
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{
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/* lets be quite clear here, if magic is not on the card, then
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we will quite likely bus error, because we will read a long
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word when there are only 3 bytes left on the card, unless
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there is a card in the next slot that has readable memory starting
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at 0, so more than likely we crash, ohh well.
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The other day I heard (read) that the directory and the rest of
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the card can be in different formats, to this I say FUCK! So
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for the time being I will just assume the whole card is in the
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same format, and let it crash most heiniously on bizzare cards
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from hell, which I hear has lots of luke warm fresca on tap.
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*/
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if (Slot.size=FindMagic( (unsigned long *)(data+i) ) )
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{
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GetHeader(&Slot,slotend-100+i);
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break;
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}
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}
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/* ohh ohh Mexico, i've never really been, but I'd sure like to go */
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if (Slot.size)
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{
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b=getRsrcByNum(&Slot,Slot.mainDir,1,bSpace,5);
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c=getDataAtRsrc(&Slot,b,2);
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d=getRsrcByNum(&Slot,b,0x24,dSpace,5);
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e=getDataAtRsrc(&Slot,d,1);
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f=getRsrcByNum(&Slot,Slot.mainDir,0x80,fSpace,5);
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g=getDataAtRsrc(&Slot,f,1);
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GetStringInfo(&Slot,c,Slot.name,40);
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/* printf("card is %s, ",Slot.name); */
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GetStringInfo(&Slot,e,Slot.manufacturer,40);
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/* printf("%s\n",Slot.manufacturer); */
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/* info here is two long words (cat,type,drvrsw,drvrhw) */
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Slot.type=(GetLongInfo(&Slot,g) & 0xffff0000) >> 16;
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/* printf("type is %x\n",Slot.type); */
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/* sounds so simple with the sun sinking low */
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}
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else
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|
return 1;
|
|
/* this comment intentionally left meaningless */
|
|
|
|
*newSlot=Slot;
|
|
return 0;
|
|
}
|
|
|
|
struct imagedata *NUBUS_GetImageData(struct slot *Slot,
|
|
struct imagedata *Rimage)
|
|
{
|
|
struct imagedata image;
|
|
struct dir *Dir;
|
|
struct dir dirSpace[10];
|
|
struct dir dirSpace2[10];
|
|
unsigned char *rawImage;
|
|
|
|
|
|
Dir=getRsrcByNum(Slot,Slot->mainDir,128,dirSpace,10);
|
|
Dir=getRsrcByNum(Slot,Dir,128,dirSpace2,10);
|
|
|
|
rawImage=getDataAtRsrc(Slot,Dir,1);
|
|
|
|
/* this is self documenting code, WHAT THE HELL IS THIS? */
|
|
image.whatTheHellIsThis=GetLongInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,4);
|
|
|
|
image.offset=GetLongInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,4);
|
|
|
|
image.rowbytes=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
image.top=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
image.left=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
image.bottom=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
image.right=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
image.version=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
image.packType=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
image.packSize=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
image.hRes=GetLongInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,4);
|
|
|
|
image.vRes=GetLongInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,4);
|
|
|
|
image.pixelType=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
image.pixelSize=GetShortInfo(Slot,rawImage);
|
|
rawImage=IncPtr(Slot,rawImage,2);
|
|
|
|
*Rimage=image;
|
|
|
|
return Rimage;
|
|
}
|
|
|
|
struct nubus_hw nubus_table[NUBUS_MAXSLOTS];
|
|
|
|
extern int
|
|
nubus_addr_to_slot(caddr_t addr)
|
|
{
|
|
int nubus_num;
|
|
|
|
for (nubus_num = 0 ; nubus_num < NUBUS_MAXSLOTS ; nubus_num++)
|
|
if (nubus_table[nubus_num].addr == addr)
|
|
return nubus_num;
|
|
return -1;
|
|
}
|
|
|
|
static void
|
|
find_nubus(void)
|
|
{
|
|
/* This functions sets up the array "nubus_table" which contains the
|
|
basic information about each card in the Nubus slot. When device
|
|
drivers are initialized later, they can look through this array to
|
|
see if their hardware is present and claim it. */
|
|
|
|
register struct nubus_hw *nu;
|
|
int nubus_num;
|
|
|
|
for (nubus_num = 0; nubus_num < NUBUS_MAXSLOTS; nubus_num++)
|
|
nubus_table[nubus_num].found = 0; /* Empty */
|
|
|
|
/* LAK: For now we can only check 9..F because that's all we map
|
|
in locore.s. Eventually (i.e. near future) we should put THIS
|
|
function in locore.s before enabling the MMU and only map the
|
|
slots that have a card in them. Also, the next loop should go from
|
|
1 to 0xF inclusive (0 is "reserved") to cover all possible hardware.
|
|
Even if the MacII only has 9..F, it won't hurt us to probe 1..8 also. */
|
|
for (nubus_num = 0; nubus_num < 6; nubus_num++)
|
|
{
|
|
nu = nubus_table + nubus_num + 9;
|
|
nu->addr = (caddr_t)(NBBASE + nubus_num * NBMEMSIZE);
|
|
nu->rom = nu->addr + NBROMOFFSET;
|
|
|
|
if(!badbaddr(nu->rom))
|
|
{
|
|
InitNubusSlot((unsigned long) nu->addr, &(nu->Slot));
|
|
|
|
nu->found = 1;
|
|
nu->claimed = 0; /* No driver has claimed this slot yet */
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
nubus_print(aux, name)
|
|
void *aux;
|
|
char *name;
|
|
{
|
|
struct nubus_hw *nu = (struct nubus_hw *) aux;
|
|
int i;
|
|
|
|
if (name) {
|
|
i = nu - nubus_table;
|
|
printf ("%s: s:%d t:%d \"",
|
|
name, i, nu->Slot.type);
|
|
printf ("%s, ",nu->Slot.name);
|
|
printf ("%s\"",nu->Slot.manufacturer);
|
|
}
|
|
return(UNCONF);
|
|
}
|
|
|
|
static void
|
|
nubus_attach(parent, dev, aux)
|
|
struct device *parent, *dev;
|
|
void *aux;
|
|
{
|
|
struct cfdriver *cf;
|
|
register struct nubus_hw *nu;
|
|
int i;
|
|
|
|
printf("\n");
|
|
|
|
find_nubus();
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
nu = nubus_table + i + 9;
|
|
|
|
if (!nu->found)
|
|
continue;
|
|
|
|
if (config_found(dev, nu, nubus_print))
|
|
nu->claimed = 1;
|
|
}
|
|
|
|
}
|
|
|
|
extern int matchbyname();
|
|
|
|
struct cfdriver nubuscd =
|
|
{ NULL, "nubus", matchbyname, nubus_attach,
|
|
DV_DULL, sizeof(struct device), NULL, 0 };
|