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https://github.com/freebsd/freebsd-src.git
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First pass fixes to start using malloc structures for all per unit
data. cd_data is now malloced on a per unit basis.
Protected all if ({scsi,cd}_debug).... with #ifdef CDDEBUG to reduce the
the size of the kernel when not debugging.
This commit is contained in:
Rodney W. Grimes
parent
62da7cbc8b
commit
65119574e4
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=417
105
sys/scsi/cd.c
105
sys/scsi/cd.c
@ -14,7 +14,7 @@
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*
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* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
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*
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* $Id: cd.c,v 1.6 93/08/26 21:09:07 julian Exp Locker: julian $
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* $Id: cd.c,v 1.6 1993/08/28 03:08:49 rgrimes Exp $
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*/
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#define SPLCD splbio
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@ -94,7 +94,7 @@ struct cd_data
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int partflags[MAXPARTITIONS]; /* per partition flags */
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#define CDOPEN 0x01
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int openparts; /* one bit for each open partition */
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}cd_data[NCD];
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}*cd_data[NCD];
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#define CD_STOP 0
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#define CD_START 1
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@ -114,18 +114,31 @@ struct scsi_switch *scsi_switch;
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struct cd_data *cd;
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struct cd_parms *dp;
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unit = next_cd_unit++;
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#ifdef CDDEBUG
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if(scsi_debug & PRINTROUTINES) printf("cdattach: ");
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#endif /*CDDEBUG*/
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/*******************************************************\
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* Check we have the resources for another drive *
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\*******************************************************/
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unit = next_cd_unit++;
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if( unit >= NCD)
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{
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printf("Too many scsi CDs..(%d > %d) reconfigure kernel\n",
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(unit + 1),NCD);
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return(0);
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}
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cd = cd_data + unit;
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cd = cd_data[unit];
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if(cd_data[unit])
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{
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printf("cd%d: Already has storage!\n",unit);
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return(0);
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}
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cd = cd_data[unit] = malloc(sizeof(struct cd_data),M_DEVBUF,M_NOWAIT);
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if(!cd)
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{
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printf("cd%d: malloc failed in cd.c\n",unit);
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return(0);
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}
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dp = &(cd->params);
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/*******************************************************\
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* Store information needed to contact our base driver *
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@ -136,7 +149,6 @@ struct scsi_switch *scsi_switch;
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cd->lu = lu;
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cd->cmdscount = CDOUTSTANDING; /* XXX (ask the board) */
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i = cd->cmdscount;
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while(i-- )
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{
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@ -173,14 +185,16 @@ cdopen(dev)
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int errcode = 0;
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int unit, part;
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struct cd_parms cd_parms;
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struct cd_data *cd ;
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struct cd_data *cd;
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unit = UNIT(dev);
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part = PARTITION(dev);
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cd = cd_data + unit;
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#ifdef CDDEBUG
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if(scsi_debug & (PRINTROUTINES | TRACEOPENS))
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printf("cdopen: dev=0x%x (unit %d (of %d),partition %d)\n"
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, dev, unit, NCD, part);
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#endif /*CDDEBUG*/
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/*******************************************************\
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* Check the unit is legal *
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\*******************************************************/
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@ -188,12 +202,11 @@ cdopen(dev)
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{
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return(ENXIO);
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}
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cd = cd_data[unit];
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/*******************************************************\
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* Make sure the disk has been initialised *
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* At some point in the future, get the scsi driver *
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* to look for a new device if we are not initted *
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* Make sure the device has been initialised *
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\*******************************************************/
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if (! (cd->flags & CDINIT))
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if ((cd == NULL) || (!(cd->flags & CDINIT)))
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return(ENXIO);
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/*******************************************************\
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@ -211,41 +224,53 @@ cdopen(dev)
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* disregard because the CDVALID flag is not yet set *
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\*******************************************************/
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if (cd_req_sense(unit, SCSI_SILENT) != 0) {
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#ifdef CDDEBUG
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if(scsi_debug & TRACEOPENS)
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printf("not reponding\n");
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#endif /*CDDEBUG*/
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return(ENXIO);
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}
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#ifdef CDDEBUG
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if(scsi_debug & TRACEOPENS)
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printf("Device present\n");
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#endif /*CDDEBUG*/
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/*******************************************************\
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* In case it is a funny one, tell it to start *
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* not needed for hard drives *
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\*******************************************************/
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cd_start_unit(unit,part,CD_START);
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cd_prevent_unit(unit,PR_PREVENT,SCSI_SILENT);
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#ifdef CDDEBUG
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if(scsi_debug & TRACEOPENS)
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printf("started ");
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#endif /*CDDEBUG*/
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/*******************************************************\
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* Load the physical device parameters *
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\*******************************************************/
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cd_get_parms(unit, 0);
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#ifdef CDDEBUG
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if(scsi_debug & TRACEOPENS)
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printf("Params loaded ");
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#endif /*CDDEBUG*/
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/*******************************************************\
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* Load the partition info if not already loaded *
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\*******************************************************/
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cdgetdisklabel(unit);
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#ifdef CDDEBUG
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if(scsi_debug & TRACEOPENS)
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printf("Disklabel fabricated ");
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#endif /*CDDEBUG*/
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/*******************************************************\
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* Check the partition is legal *
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\*******************************************************/
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if (( part >= cd->disklabel.d_npartitions )
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&& (part != RAW_PART))
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{
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#ifdef CDDEBUG
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if(scsi_debug & TRACEOPENS)
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printf("partition %d > %d\n",part
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,cd->disklabel.d_npartitions);
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#endif /*CDDEBUG*/
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cd_prevent_unit(unit,PR_ALLOW,SCSI_SILENT);
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return(ENXIO);
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}
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@ -257,14 +282,18 @@ cdopen(dev)
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{
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cd->partflags[part] |= CDOPEN;
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cd->openparts |= (1 << part);
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#ifdef CDDEBUG
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if(scsi_debug & TRACEOPENS)
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printf("open complete\n");
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#endif /*CDDEBUG*/
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cd->flags |= CDVALID;
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}
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else
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{
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#ifdef CDDEBUG
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if(scsi_debug & TRACEOPENS)
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printf("part %d type UNUSED\n",part);
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#endif /*CDDEBUG*/
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cd_prevent_unit(unit,PR_ALLOW,SCSI_SILENT);
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return(ENXIO);
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}
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@ -347,7 +376,7 @@ int flags;
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void cdminphys(bp)
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struct buf *bp;
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{
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(*(cd_data[UNIT(bp->b_dev)].sc_sw->scsi_minphys))(bp);
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(*(cd_data[UNIT(bp->b_dev)]->sc_sw->scsi_minphys))(bp);
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}
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/*******************************************************\
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@ -362,15 +391,17 @@ struct buf *bp;
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{
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struct buf *dp;
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unsigned int opri;
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struct cd_data *cd ;
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struct cd_data *cd;
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int unit;
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cdstrats++;
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unit = UNIT((bp->b_dev));
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cd = cd_data + unit;
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cd = cd_data[unit];
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#ifdef CDDEBUG
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if(scsi_debug & PRINTROUTINES) printf("\ncdstrategy ");
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if(scsi_debug & SHOWREQUESTS) printf("cd%d: %d bytes @ blk%d\n",
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unit,bp->b_bcount,bp->b_blkno);
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#endif /*CDDEBUG*/
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cdminphys(bp);
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/*******************************************************\
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* If the device has been made invalid, error out *
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@ -466,10 +497,12 @@ int unit;
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struct scsi_xfer *xs;
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struct scsi_rw_big cmd;
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int blkno, nblk;
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struct cd_data *cd = cd_data + unit;
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struct cd_data *cd = cd_data[unit];
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struct partition *p ;
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#ifdef CDDEBUG
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if(scsi_debug & PRINTROUTINES) printf("cdstart%d ",unit);
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#endif /*CDDEBUG*/
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/*******************************************************\
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* See if there is a buf to do and we are not already *
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* doing one *
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@ -575,7 +608,9 @@ struct scsi_xfer *xs;
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struct buf *bp;
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int retval;
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#ifdef CDDEBUG
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if(scsi_debug & PRINTROUTINES) printf("cd_done%d ",unit);
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#endif /*CDDEBUG*/
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if (! (xs->flags & INUSE)) /* paranoia always pays off */
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panic("scsi_xfer not in use!");
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if(bp = xs->bp)
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@ -608,7 +643,7 @@ struct scsi_xfer *xs;
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{
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xs->error = XS_NOERROR;
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xs->flags &= ~ITSDONE;
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if ( (*(cd_data[unit].sc_sw->scsi_cmd))(xs)
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if ( (*(cd_data[unit]->sc_sw->scsi_cmd))(xs)
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== SUCCESSFULLY_QUEUED)
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{ /* shhh! don't wake the job, ok? */
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/* don't tell cdstart either, */
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@ -651,13 +686,15 @@ cdioctl(dev_t dev, int cmd, caddr_t addr, int flag)
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\*******************************************************/
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unit = UNIT(dev);
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part = PARTITION(dev);
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cd = &cd_data[unit];
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cd = cd_data[unit];
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#ifdef CDDEBUG
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if(scsi_debug & PRINTROUTINES) printf("cdioctl%d ",unit);
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#endif /*CDDEBUG*/
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/*******************************************************\
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* If the device is not valid.. abandon ship *
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\*******************************************************/
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if (!(cd_data[unit].flags & CDVALID))
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if (!(cd_data[unit]->flags & CDVALID))
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return(EIO);
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switch(cmd)
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{
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@ -961,10 +998,10 @@ unsigned char unit;
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/*unsigned int n, m;*/
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char *errstring;
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struct dos_partition *dos_partition_p;
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struct cd_data *cd = cd_data + unit;
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struct cd_data *cd = cd_data[unit];
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/*******************************************************\
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* If the inflo is already loaded, use it *
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* If the info is already loaded, use it *
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\*******************************************************/
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if(cd->flags & CDHAVELABEL) return;
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@ -1043,9 +1080,11 @@ cd_size(unit, flags)
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blksize += rdcap.length_2 << 16;
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blksize += rdcap.length_3 << 24;
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}
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#ifdef CDDEBUG
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if(cd_debug)printf("cd%d: %d %d byte blocks\n",unit,size,blksize);
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cd_data[unit].params.disksize = size;
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cd_data[unit].params.blksize = blksize;
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#endif /*CDDEBUG*/
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cd_data[unit]->params.disksize = size;
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cd_data[unit]->params.blksize = blksize;
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return(size);
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}
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@ -1262,7 +1301,7 @@ cd_start_unit(unit,part,type)
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{
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struct scsi_start_stop scsi_cmd;
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if(type==CD_EJECT && (cd_data[unit].openparts&~(1<<part)) == 0 ) {
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if(type==CD_EJECT && (cd_data[unit]->openparts&~(1<<part)) == 0 ) {
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cd_prevent_unit(unit,CD_EJECT,0);
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}
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@ -1290,7 +1329,7 @@ int unit,type,flags;
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{
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struct scsi_prevent scsi_cmd;
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if(type==CD_EJECT || type==PR_PREVENT || cd_data[unit].openparts == 0 ) {
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if(type==CD_EJECT || type==PR_PREVENT || cd_data[unit]->openparts == 0 ) {
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bzero(&scsi_cmd, sizeof(scsi_cmd));
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scsi_cmd.op_code = PREVENT_ALLOW;
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scsi_cmd.how = (type==CD_EJECT)?PR_ALLOW:type;
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@ -1383,7 +1422,7 @@ struct cd_toc_entry *data;
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int cd_get_parms(unit, flags)
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{
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struct cd_data *cd = cd_data + unit;
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struct cd_data *cd = cd_data[unit];
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/*******************************************************\
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* First check if we have it all loaded *
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@ -1416,10 +1455,12 @@ dev_t dev;
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unit = UNIT(dev);
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part = PARTITION(dev);
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#ifdef CDDEBUG
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if(scsi_debug & TRACEOPENS)
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printf("closing cd%d part %d\n",unit,part);
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cd_data[unit].partflags[part] &= ~CDOPEN;
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cd_data[unit].openparts &= ~(1 << part);
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printf("cd%d: closing part %d\n",unit,part);
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#endif
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cd_data[unit]->partflags[part] &= ~CDOPEN;
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cd_data[unit]->openparts &= ~(1 << part);
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cd_prevent_unit(unit,PR_ALLOW,SCSI_SILENT);
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return(0);
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}
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@ -1445,9 +1486,11 @@ int datalen;
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struct scsi_xfer *xs;
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int retval;
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int s;
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struct cd_data *cd = cd_data + unit;
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struct cd_data *cd = cd_data[unit];
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#ifdef CDDEBUG
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if(scsi_debug & PRINTROUTINES) printf("\ncd_scsi_cmd%d ",unit);
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#endif /*CDDEBUG*/
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if(cd->sc_sw) /* If we have a scsi driver */
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{
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xs = cd_get_xs(unit,flags); /* should wait unless booting */
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@ -1617,8 +1660,8 @@ struct scsi_xfer *xs;
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return(EINVAL);
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case 0x6:
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if(!silent)printf("cd%d: Unit attention\n", unit);
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if (cd_data[unit].openparts)
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cd_data[unit].flags &= ~(CDVALID | CDHAVELABEL);
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if (cd_data[unit]->openparts)
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cd_data[unit]->flags &= ~(CDVALID | CDHAVELABEL);
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{
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return(EIO);
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}
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