/* * Written by Julian Elischer (julian@tfs.com) * for TRW Financial Systems for use under the MACH(2.5) operating system. * Hacked by Theo de Raadt * * TRW Financial Systems, in accordance with their agreement with Carnegie * Mellon University, makes this software available to CMU to distribute * or use in any manner that they see fit as long as this message is kept with * the software. For this reason TFS also grants any other persons or * organisations permission to use or modify this software. * * TFS supplies this software to be publicly redistributed * on the understanding that TFS is not responsible for the correct * functioning of this software in any circumstances. * * $Id: cd.c,v 1.21 1994/01/11 17:21:57 mycroft Exp $ */ #define SPLCD splbio #define ESUCCESS 0 #include "cd.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* rw_big and start_stop come from there */ #include long int cdstrats,cdqueues; #ifdef DDB int Debugger(); #else #define Debugger() #endif #define PAGESIZ 4096 #define SECSIZE 2048 /* XXX */ /* default only */ #define CDOUTSTANDING 2 #define CDQSIZE 4 #define CD_RETRIES 4 #define UNITSHIFT 3 #define PARTITION(z) (minor(z) & 0x07) #define RAW_PART 3 #define UNIT(z) ( (minor(z) >> UNITSHIFT) ) #undef NCD #define NCD ( makedev(1,0) >> UNITSHIFT) extern int hz; int cd_done(); void cdstrategy(); int cd_debug = 0; struct buf cd_buf_queue[NCD]; struct scsi_xfer cd_scsi_xfer[NCD][CDOUTSTANDING]; /* XXX */ struct scsi_xfer *cd_free_xfer[NCD]; int cd_xfer_block_wait[NCD]; struct cd_data *cd_data[NCD]; #define CD_STOP 0 #define CD_START 1 #define CD_EJECT -2 /* * The routine called by the low level scsi routine when it discovers * A device suitable for this driver */ int cdattach(int masunit, struct scsi_switch *sw, int physid, int *unit) { unsigned char *tbl; struct cd_data *cd; struct cd_parms *dp; int targ, lun, i; targ = physid >> 3; lun = physid & 7; if(*unit == -1) { for(i=0; i= NCD || *unit == -1) return 0; if(cd_data[*unit]) return 0; cd = cd_data[*unit] = (struct cd_data *)malloc(sizeof *cd, M_TEMP, M_NOWAIT); if(!cd) return 0; bzero(cd, sizeof *cd); dp = &(cd->params); if(scsi_debug & PRINTROUTINES) printf("cdattach: "); /*******************************************************\ * Store information needed to contact our base driver * \*******************************************************/ cd->sc_sw = sw; cd->ctlr = masunit; cd->targ = targ; cd->lu = lun; cd->cmdscount = CDOUTSTANDING; /* XXX (ask the board) */ i = cd->cmdscount; while(i--) { cd_scsi_xfer[*unit][i].next = cd_free_xfer[*unit]; cd_free_xfer[*unit] = &cd_scsi_xfer[*unit][i]; } /*******************************************************\ * Use the subdriver to request information regarding * * the drive. We cannot use interrupts yet, so the * * request must specify this. * \*******************************************************/ cd_get_parms(*unit, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT); printf("cd%d at %s%d targ %d lun %d: %s\n", *unit, sw->name, masunit, targ, lun, dp->disksize ? "loaded" : "empty"); cd->flags |= CDINIT; return 1; } /*******************************************************\ * open the device. Make sure the partition info * * is a up-to-date as can be. * \*******************************************************/ cdopen(dev_t dev) { int errcode = 0; int unit, part; struct cd_parms cd_parms; struct cd_data *cd; unit = UNIT(dev); part = PARTITION(dev); if(scsi_debug & (PRINTROUTINES | TRACEOPENS)) printf("cd%d: open dev=0x%x partition %d)\n", unit, dev, part); /*******************************************************\ * Check the unit is legal * \*******************************************************/ if( unit >= NCD ) return(ENXIO); cd = cd_data[unit]; if(!cd) return ENXIO; if (! (cd->flags & CDINIT)) return(ENXIO); /*******************************************************\ * If it's been invalidated, and not everybody has * * closed it then forbid re-entry. * * (may have changed media) * \*******************************************************/ if ((! (cd->flags & CDVALID)) && ( cd->openparts)) return(ENXIO); /*******************************************************\ * Check that it is still responding and ok. * * if the media has been changed this will result in a * * "unit attention" error which the error code will * * disregard because the CDVALID flag is not yet set * \*******************************************************/ if (cd_req_sense(unit, SCSI_SILENT) != 0) { if(scsi_debug & TRACEOPENS) printf("not reponding\n"); return(ENXIO); } if(scsi_debug & TRACEOPENS) printf("Device present\n"); /*******************************************************\ * In case it is a funny one, tell it to start * * not needed for hard drives * \*******************************************************/ cd_start_unit(unit,part,CD_START); cd_prevent_unit(unit,PR_PREVENT,SCSI_SILENT); if(scsi_debug & TRACEOPENS) printf("started "); /*******************************************************\ * Load the physical device parameters * \*******************************************************/ cd_get_parms(unit, 0); if(scsi_debug & TRACEOPENS) printf("Params loaded "); /*******************************************************\ * Load the partition info if not already loaded * \*******************************************************/ cdgetdisklabel(unit); if(scsi_debug & TRACEOPENS) printf("Disklabel fabricated "); /*******************************************************\ * Check the partition is legal * \*******************************************************/ if (( part >= cd->disklabel.d_npartitions ) && (part != RAW_PART)) { if(scsi_debug & TRACEOPENS) printf("partition %d > %d\n",part ,cd->disklabel.d_npartitions); cd_prevent_unit(unit,PR_ALLOW,SCSI_SILENT); return(ENXIO); } /*******************************************************\ * Check that the partition exists * \*******************************************************/ if (( cd->disklabel.d_partitions[part].p_fstype != FS_UNUSED ) || (part == RAW_PART)) { cd->partflags[part] |= CDOPEN; cd->openparts |= (1 << part); if(scsi_debug & TRACEOPENS) printf("open complete\n"); cd->flags |= CDVALID; } else { if(scsi_debug & TRACEOPENS) printf("part %d type UNUSED\n",part); cd_prevent_unit(unit,PR_ALLOW,SCSI_SILENT); return(ENXIO); } return(0); } /*******************************************************\ * Get ownership of a scsi_xfer structure * * If need be, sleep on it, until it comes free * \*******************************************************/ struct scsi_xfer *cd_get_xs(unit,flags) int flags; int unit; { struct scsi_xfer *xs; int s; if(flags & (SCSI_NOSLEEP | SCSI_NOMASK)) { if (xs = cd_free_xfer[unit]) { cd_free_xfer[unit] = xs->next; xs->flags = 0; } } else { s = SPLCD(); while (!(xs = cd_free_xfer[unit])) { cd_xfer_block_wait[unit]++; /* someone waiting! */ tsleep((caddr_t)&cd_free_xfer[unit], PRIBIO+1, "cd_get_xs", 0); cd_xfer_block_wait[unit]--; } cd_free_xfer[unit] = xs->next; splx(s); xs->flags = 0; } return(xs); } /*******************************************************\ * Free a scsi_xfer, wake processes waiting for it * \*******************************************************/ void cd_free_xs(int unit, struct scsi_xfer *xs, int flags) { int s; if(flags & SCSI_NOMASK) { if (cd_xfer_block_wait[unit]) { printf("cd%d: doing a wakeup from NOMASK mode\n", unit); wakeup((caddr_t)&cd_free_xfer[unit]); } xs->next = cd_free_xfer[unit]; cd_free_xfer[unit] = xs; } else { s = SPLCD(); if (cd_xfer_block_wait[unit]) wakeup((caddr_t)&cd_free_xfer[unit]); xs->next = cd_free_xfer[unit]; cd_free_xfer[unit] = xs; splx(s); } } /*******************************************************\ * trim the size of the transfer if needed, * * called by physio * * basically the smaller of our max and the scsi driver's* * minphys (note we have no max ourselves) * \*******************************************************/ /* Trim buffer length if buffer-size is bigger than page size */ void cdminphys(bp) struct buf *bp; { (*(cd_data[UNIT(bp->b_dev)]->sc_sw->scsi_minphys))(bp); } /*******************************************************\ * Actually translate the requested transfer into * * one the physical driver can understand * * The transfer is described by a buf and will include * * only one physical transfer. * \*******************************************************/ void cdstrategy(bp) struct buf *bp; { struct buf *dp; unsigned int opri; struct cd_data *cd ; int unit; cdstrats++; unit = UNIT((bp->b_dev)); cd = cd_data[unit]; if(scsi_debug & PRINTROUTINES) printf("\ncdstrategy "); if(scsi_debug & SHOWREQUESTS) printf("cd%d: %d bytes @ blk%d\n", unit,bp->b_bcount,bp->b_blkno); if(!cd) { bp->b_error = EIO; goto bad; } if(!(cd->flags & CDVALID)) { bp->b_error = EIO; goto bad; } cdminphys(bp); /*******************************************************\ * If the device has been made invalid, error out * * maybe the media changed * \*******************************************************/ /*******************************************************\ * can't ever write to a CD * \*******************************************************/ if ((bp->b_flags & B_READ) == 0) { bp->b_error = EROFS; goto bad; } /*******************************************************\ * If it's a null transfer, return immediatly * \*******************************************************/ if (bp->b_bcount == 0) { goto done; } /*******************************************************\ * Decide which unit and partition we are talking about * \*******************************************************/ if(PARTITION(bp->b_dev) != RAW_PART) { if (!(cd->flags & CDHAVELABEL)) { bp->b_error = EIO; goto bad; } /* * do bounds checking, adjust transfer. if error, process. * if end of partition, just return */ if (bounds_check_with_label(bp,&cd->disklabel,1) <= 0) goto done; /* otherwise, process transfer request */ } opri = SPLCD(); dp = &cd_buf_queue[unit]; /*******************************************************\ * Place it in the queue of disk activities for this disk* \*******************************************************/ disksort(dp, bp); /*******************************************************\ * Tell the device to get going on the transfer if it's * * not doing anything, otherwise just wait for completion* \*******************************************************/ cdstart(unit); splx(opri); return; bad: bp->b_flags |= B_ERROR; done: /*******************************************************\ * Correctly set the buf to indicate a completed xfer * \*******************************************************/ bp->b_resid = bp->b_bcount; biodone(bp); return; } /***************************************************************\ * cdstart looks to see if there is a buf waiting for the device * * and that the device is not already busy. If both are true, * * It deques the buf and creates a scsi command to perform the * * transfer in the buf. The transfer request will call cd_done * * on completion, which will in turn call this routine again * * so that the next queued transfer is performed. * * The bufs are queued by the strategy routine (cdstrategy) * * * * This routine is also called after other non-queued requests * * have been made of the scsi driver, to ensure that the queue * * continues to be drained. * * * * must be called at the correct (highish) spl level * \***************************************************************/ /* cdstart() is called at SPLCD from cdstrategy and cd_done*/ void cdstart(int unit) { register struct buf *bp = 0; register struct buf *dp; struct scsi_xfer *xs; struct scsi_rw_big cmd; int blkno, nblk; struct cd_data *cd = cd_data[unit]; struct partition *p ; if(scsi_debug & PRINTROUTINES) printf("cdstart%d ",unit); /*******************************************************\ * See if there is a buf to do and we are not already * * doing one * \*******************************************************/ if(!cd_free_xfer[unit]) { return; /* none for us, unit already underway */ } if(cd_xfer_block_wait[unit]) /* there is one, but a special waits */ { return; /* give the special that's waiting a chance to run */ } dp = &cd_buf_queue[unit]; if ((bp = dp->b_actf) != NULL) /* yes, an assign */ { dp->b_actf = bp->av_forw; } else { return; } xs=cd_get_xs(unit,0); /* ok we can grab it */ xs->flags = INUSE; /* Now ours */ /***************************************************************\ * Should reject all queued entries if CDVALID is not true * \***************************************************************/ if(!(cd->flags & CDVALID)) { goto bad; /* no I/O.. media changed or something */ } /*******************************************************\ * We have a buf, now we should move the data into * * a scsi_xfer definition and try start it * \*******************************************************/ /*******************************************************\ * First, translate the block to absolute * * and put it in terms of the logical blocksize of the * * device.. * \*******************************************************/ p = cd->disklabel.d_partitions + PARTITION(bp->b_dev); blkno = ((bp->b_blkno / (cd->params.blksize/512)) + p->p_offset); nblk = (bp->b_bcount + (cd->params.blksize - 1)) / (cd->params.blksize); /*******************************************************\ * Fill out the scsi command * \*******************************************************/ bzero(&cmd, sizeof(cmd)); cmd.op_code = READ_BIG; cmd.addr_3 = (blkno & 0xff000000) >> 24; cmd.addr_2 = (blkno & 0xff0000) >> 16; cmd.addr_1 = (blkno & 0xff00) >> 8; cmd.addr_0 = blkno & 0xff; cmd.length2 = (nblk & 0xff00) >> 8; cmd.length1 = (nblk & 0xff); /*******************************************************\ * Fill out the scsi_xfer structure * * Note: we cannot sleep as we may be an interrupt * \*******************************************************/ xs->flags |= SCSI_NOSLEEP; xs->adapter = cd->ctlr; xs->targ = cd->targ; xs->lu = cd->lu; xs->retries = CD_RETRIES; xs->timeout = 10000;/* 10000 millisecs for a disk !*/ xs->cmd = (struct scsi_generic *)&cmd; xs->cmdlen = sizeof(cmd); xs->resid = bp->b_bcount; xs->when_done = cd_done; xs->done_arg = unit; xs->done_arg2 = (int)xs; xs->error = XS_NOERROR; xs->bp = bp; xs->data = (u_char *)bp->b_un.b_addr; xs->datalen = bp->b_bcount; /*******************************************************\ * Pass all this info to the scsi driver. * \*******************************************************/ if ( (*(cd->sc_sw->scsi_cmd))(xs) != SUCCESSFULLY_QUEUED) { printf("cd%d: oops not queued",unit); goto bad; } cdqueues++; return; bad: xs->error = XS_DRIVER_STUFFUP; cd_done(unit,xs); } /*******************************************************\ * This routine is called by the scsi interrupt when * * the transfer is complete. (or failed) * \*******************************************************/ int cd_done(unit,xs) int unit; struct scsi_xfer *xs; { struct buf *bp; int retval; if(scsi_debug & PRINTROUTINES) printf("cd_done%d ",unit); if (! (xs->flags & INUSE)) /* paranoia always pays off */ panic("scsi_xfer not in use!"); if(bp = xs->bp) { switch(xs->error) { case XS_NOERROR: bp->b_error = 0; bp->b_resid = 0; break; case XS_SENSE: retval = (cd_interpret_sense(unit,xs)); if(retval) { bp->b_flags |= B_ERROR; bp->b_error = retval; } break; case XS_TIMEOUT: printf("cd%d: timeout\n",unit); case XS_BUSY: /***********************************\ * Just resubmit it straight back to * * the SCSI driver to try it again * \***********************************/ if(xs->retries--) { xs->error = XS_NOERROR; xs->flags &= ~ITSDONE; if ( (*(cd_data[unit]->sc_sw->scsi_cmd))(xs) == SUCCESSFULLY_QUEUED) { /* shhh! don't wake the job, ok? */ /* don't tell cdstart either, */ return; } /* xs->error is set by the scsi driver */ } /* Fall through */ case XS_DRIVER_STUFFUP: bp->b_flags |= B_ERROR; bp->b_error = EIO; break; default: printf("cd%d: unknown error category from scsi driver\n" ,unit); } biodone(bp); cd_free_xs(unit,xs,0); cdstart(unit); /* If there's anything waiting.. do it */ } else /* special has finished */ { wakeup((caddr_t)xs); } } /*******************************************************\ * Perform special action on behalf of the user * * Knows about the internals of this device * \*******************************************************/ cdioctl(dev_t dev, int cmd, caddr_t addr, int flag) { int error = 0; unsigned int opri; unsigned char unit, part; register struct cd_data *cd; /*******************************************************\ * Find the device that the user is talking about * \*******************************************************/ unit = UNIT(dev); part = PARTITION(dev); cd = cd_data[unit]; if(scsi_debug & PRINTROUTINES) printf("cdioctl%d ",unit); /*******************************************************\ * If the device is not valid.. abandon ship * \*******************************************************/ if(!cd) return ENXIO; if (!(cd_data[unit]->flags & CDVALID)) return ENXIO; switch(cmd) { case DIOCSBAD: error = EINVAL; break; case DIOCGDINFO: *(struct disklabel *)addr = cd->disklabel; break; case DIOCGPART: ((struct partinfo *)addr)->disklab = &cd->disklabel; ((struct partinfo *)addr)->part = &cd->disklabel.d_partitions[PARTITION(dev)]; break; case DIOCWDINFO: case DIOCSDINFO: if ((flag & FWRITE) == 0) error = EBADF; else error = setdisklabel(&cd->disklabel, (struct disklabel *)addr, /*(cd->flags & DKFL_BSDLABEL) ? cd->openparts : */0, 0); if (error == 0) { cd->flags |= CDHAVELABEL; } break; case DIOCWLABEL: error = EBADF; break; case CDIOCPLAYTRACKS: { struct ioc_play_track *args = (struct ioc_play_track *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.sotc = 0; data.page.audio.immed = 1; if(error = cd_set_mode(unit,&data)) break; return(cd_play_tracks(unit ,args->start_track ,args->start_index ,args->end_track ,args->end_index )); } break; case CDIOCPLAYMSF: { struct ioc_play_msf *args = (struct ioc_play_msf *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.sotc = 0; data.page.audio.immed = 1; if(error = cd_set_mode(unit,&data)) break; return(cd_play_msf(unit ,args->start_m ,args->start_s ,args->start_f ,args->end_m ,args->end_s ,args->end_f )); } break; case CDIOCPLAYBLOCKS: { struct ioc_play_blocks *args = (struct ioc_play_blocks *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.sotc = 0; data.page.audio.immed = 1; if(error = cd_set_mode(unit,&data)) break; return(cd_play(unit,args->blk,args->len)); } break; case CDIOCREADSUBCHANNEL: { struct ioc_read_subchannel *args = (struct ioc_read_subchannel *)addr; struct cd_sub_channel_info data; int len=args->data_len; if(len>sizeof(data)|| lenaddress_format, args->data_format,args->track,&data,len)) { break; } len=MIN(len,((data.header.data_len[0]<<8)+data.header.data_len[1]+ sizeof(struct cd_sub_channel_header))); if(copyout(&data,args->data,len)!=0) { error=EFAULT; } } break; case CDIOREADTOCHEADER: { struct ioc_toc_header th; if( error = cd_read_toc(unit, 0, 0, (struct cd_toc_entry *)&th,sizeof(th))) break; th.len=(th.len&0xff)<<8+((th.len>>8)&0xff); bcopy(&th,addr,sizeof(th)); } break; case CDIOREADTOCENTRYS: { struct ioc_read_toc_entry *te= (struct ioc_read_toc_entry *)addr; struct cd_toc_entry data[65]; struct ioc_toc_header *th; int len=te->data_len; th=(struct ioc_toc_header *)data; if(len>sizeof(data) || lenaddress_format, te->starting_track, (struct cd_toc_entry *)data, len)) break; len=MIN(len,((((th->len&0xff)<<8)+((th->len>>8)))+ sizeof(*th))); if(copyout(th,te->data,len)!=0) { error=EFAULT; } } break; case CDIOCSETPATCH: { struct ioc_patch *arg = (struct ioc_patch *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.port[LEFT_PORT].channels = arg->patch[0]; data.page.audio.port[RIGHT_PORT].channels = arg->patch[1]; data.page.audio.port[2].channels = arg->patch[2]; data.page.audio.port[3].channels = arg->patch[3]; if(error = cd_set_mode(unit,&data)) break; } break; case CDIOCGETVOL: { struct ioc_vol *arg = (struct ioc_vol *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; arg->vol[LEFT_PORT] = data.page.audio.port[LEFT_PORT].volume; arg->vol[RIGHT_PORT] = data.page.audio.port[RIGHT_PORT].volume; arg->vol[2] = data.page.audio.port[2].volume; arg->vol[3] = data.page.audio.port[3].volume; } break; case CDIOCSETVOL: { struct ioc_vol *arg = (struct ioc_vol *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.port[LEFT_PORT].volume = arg->vol[LEFT_PORT]; data.page.audio.port[RIGHT_PORT].volume = arg->vol[RIGHT_PORT]; data.page.audio.port[2].volume = arg->vol[2]; data.page.audio.port[3].volume = arg->vol[3]; if(error = cd_set_mode(unit,&data)) break; } break; case CDIOCSETMONO: { struct ioc_vol *arg = (struct ioc_vol *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.port[LEFT_PORT].channels = LEFT_CHANNEL|RIGHT_CHANNEL|4|8; data.page.audio.port[RIGHT_PORT].channels = LEFT_CHANNEL|RIGHT_CHANNEL; data.page.audio.port[2].channels = 0; data.page.audio.port[3].channels = 0; if(error = cd_set_mode(unit,&data)) break; } break; case CDIOCSETSTERIO: { struct ioc_vol *arg = (struct ioc_vol *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.port[LEFT_PORT].channels = LEFT_CHANNEL; data.page.audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL; data.page.audio.port[2].channels = 0; data.page.audio.port[3].channels = 0; if(error = cd_set_mode(unit,&data)) break; } break; case CDIOCSETMUTE: { struct ioc_vol *arg = (struct ioc_vol *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.port[LEFT_PORT].channels = 0; data.page.audio.port[RIGHT_PORT].channels = 0; data.page.audio.port[2].channels = 0; data.page.audio.port[3].channels = 0; if(error = cd_set_mode(unit,&data)) break; } break; case CDIOCSETLEFT: { struct ioc_vol *arg = (struct ioc_vol *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.port[LEFT_PORT].channels = 15; data.page.audio.port[RIGHT_PORT].channels = 15; data.page.audio.port[2].channels = 15; data.page.audio.port[3].channels = 15; if(error = cd_set_mode(unit,&data)) break; } break; case CDIOCSETRIGHT: { struct ioc_vol *arg = (struct ioc_vol *)addr; struct cd_mode_data data; if(error = cd_get_mode(unit,&data,AUDIO_PAGE)) break; data.page.audio.port[LEFT_PORT].channels = RIGHT_CHANNEL; data.page.audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL; data.page.audio.port[2].channels = 0; data.page.audio.port[3].channels = 0; if(error = cd_set_mode(unit,&data)) break; } break; case CDIOCRESUME: error = cd_pause(unit,1); break; case CDIOCPAUSE: error = cd_pause(unit,0); break; case CDIOCSTART: error = cd_start_unit(unit,part,CD_START); break; case CDIOCSTOP: error = cd_start_unit(unit,part,CD_STOP); break; case CDIOCEJECT: error = cd_start_unit(unit,part,CD_EJECT); break; case CDIOCSETDEBUG: scsi_debug = 0xfff; cd_debug = 0xfff; break; case CDIOCCLRDEBUG: scsi_debug = 0; cd_debug = 0; break; case CDIOCRESET: return(cd_reset(unit)); break; default: error = ENOTTY; break; } return (error); } /*******************************************************\ * Load the label information on the named device * * * * EVENTUALLY take information about different * * data tracks from the TOC and put it in the disklabel * \*******************************************************/ int cdgetdisklabel(unit) unsigned char unit; { /*unsigned int n, m;*/ char *errstring; struct cd_data *cd = cd_data[unit]; /*******************************************************\ * If the inflo is already loaded, use it * \*******************************************************/ if(cd->flags & CDHAVELABEL) return; bzero(&cd->disklabel,sizeof(struct disklabel)); /*******************************************************\ * make partition 3 the whole disk in case of failure * * then get pdinfo * \*******************************************************/ strncpy(cd->disklabel.d_typename,"scsi cd_rom",16); strncpy(cd->disklabel.d_packname,"ficticious",16); cd->disklabel.d_secsize = cd->params.blksize; /* as long as it's not 0 */ cd->disklabel.d_nsectors = 100; cd->disklabel.d_ntracks = 1; cd->disklabel.d_ncylinders = (cd->params.disksize / 100) + 1; cd->disklabel.d_secpercyl = 100; cd->disklabel.d_secperunit = cd->params.disksize; cd->disklabel.d_rpm = 300; cd->disklabel.d_interleave = 1; cd->disklabel.d_flags = D_REMOVABLE; cd->disklabel.d_npartitions = 1; cd->disklabel.d_partitions[0].p_offset = 0; /* * remember that comparisons with the partition are done * assuming the blocks are DEV_BSIZE each, so fudge it. */ cd->disklabel.d_partitions[0].p_size = cd->params.disksize * (cd->params.blksize / DEV_BSIZE); cd->disklabel.d_partitions[0].p_fstype = 9; cd->disklabel.d_magic = DISKMAGIC; cd->disklabel.d_magic2 = DISKMAGIC; cd->disklabel.d_checksum = dkcksum(&(cd->disklabel)); /*******************************************************\ * Signal to other users and routines that we now have a * * disklabel that represents the media (maybe) * \*******************************************************/ cd->flags |= CDHAVELABEL; return(ESUCCESS); } /*******************************************************\ * Find out form the device what it's capacity is * \*******************************************************/ cd_size(unit, flags) { struct scsi_read_cd_cap_data rdcap; struct scsi_read_cd_capacity scsi_cmd; int size; int blksize; /*******************************************************\ * make up a scsi command and ask the scsi driver to do * * it for you. * \*******************************************************/ bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.op_code = READ_CD_CAPACITY; /*******************************************************\ * If the command works, interpret the result as a 4 byte* * number of blocks * \*******************************************************/ if (cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), (u_char *)&rdcap, sizeof(rdcap), 2000, flags) != 0) { if(!(flags & SCSI_SILENT)) printf("cd%d: could not get size\n", unit); return(0); } else { size = rdcap.addr_0 + 1 ; size += rdcap.addr_1 << 8; size += rdcap.addr_2 << 16; size += rdcap.addr_3 << 24; blksize = rdcap.length_0 ; blksize += rdcap.length_1 << 8; blksize += rdcap.length_2 << 16; blksize += rdcap.length_3 << 24; } if(cd_debug)printf("cd%d: %d %d byte blocks\n",unit,size,blksize); cd_data[unit]->params.disksize = size; cd_data[unit]->params.blksize = blksize; return(size); } /*******************************************************\ * Check with the device that it is ok, (via scsi driver)* \*******************************************************/ cd_req_sense(unit, flags) { struct scsi_sense_data sense_data; struct scsi_sense scsi_cmd; bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.op_code = REQUEST_SENSE; scsi_cmd.length = sizeof(sense_data); if (cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), (u_char *)&sense_data, sizeof(sense_data), 2000, flags) != 0) { return(ENXIO); } else return(0); } /*******************************************************\ * Get the requested page into the buffer given * \*******************************************************/ cd_get_mode(unit,data,page) int unit; struct cd_mode_data *data; int page; { struct scsi_mode_sense scsi_cmd; int retval; bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); bzero(data,sizeof(*data)); scsi_cmd.op_code = MODE_SENSE; scsi_cmd.page_code = page; scsi_cmd.length = sizeof(*data) & 0xff; retval = cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), (u_char *)data, sizeof(*data), 20000, /* should be immed */ 0); return (retval); } /*******************************************************\ * Get the requested page into the buffer given * \*******************************************************/ cd_set_mode(unit,data) int unit; struct cd_mode_data *data; { struct scsi_mode_select scsi_cmd; bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.op_code = MODE_SELECT; scsi_cmd.pf = 1; scsi_cmd.length = sizeof(*data) & 0xff; data->header.data_length = 0; /*show_mem(data,sizeof(*data));/**/ return (cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), (u_char *)data, sizeof(*data), 20000, /* should be immed */ 0) ); } /*******************************************************\ * Get scsi driver to send a "start playing" command * \*******************************************************/ cd_play(unit,blk,len) int unit,blk,len; { struct scsi_play scsi_cmd; int retval; bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.op_code = PLAY; scsi_cmd.blk_addr[0] = (blk >> 24) & 0xff; scsi_cmd.blk_addr[1] = (blk >> 16) & 0xff; scsi_cmd.blk_addr[2] = (blk >> 8) & 0xff; scsi_cmd.blk_addr[3] = blk & 0xff; scsi_cmd.xfer_len[0] = (len >> 8) & 0xff; scsi_cmd.xfer_len[1] = len & 0xff; retval = cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), 0, 0, 200000, /* should be immed */ 0); return(retval); } /*******************************************************\ * Get scsi driver to send a "start playing" command * \*******************************************************/ cd_play_big(unit,blk,len) int unit,blk,len; { struct scsi_play_big scsi_cmd; int retval; bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.op_code = PLAY_BIG; scsi_cmd.blk_addr[0] = (blk >> 24) & 0xff; scsi_cmd.blk_addr[1] = (blk >> 16) & 0xff; scsi_cmd.blk_addr[2] = (blk >> 8) & 0xff; scsi_cmd.blk_addr[3] = blk & 0xff; scsi_cmd.xfer_len[0] = (len >> 24) & 0xff; scsi_cmd.xfer_len[1] = (len >> 16) & 0xff; scsi_cmd.xfer_len[2] = (len >> 8) & 0xff; scsi_cmd.xfer_len[3] = len & 0xff; retval = cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), 0, 0, 20000, /* should be immed */ 0); return(retval); } /*******************************************************\ * Get scsi driver to send a "start playing" command * \*******************************************************/ cd_play_tracks(unit,strack,sindex,etrack,eindex) int unit,strack,sindex,etrack,eindex; { struct scsi_play_track scsi_cmd; int retval; bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.op_code = PLAY_TRACK; scsi_cmd.start_track = strack; scsi_cmd.start_index = sindex; scsi_cmd.end_track = etrack; scsi_cmd.end_index = eindex; retval = cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), 0, 0, 20000, /* should be immed */ 0); return(retval); } /*******************************************************\ * Get scsi driver to send a "play msf" command * \*******************************************************/ cd_play_msf(unit,sm,ss,sf,em,es,ef) int unit; u_char sm,ss,sf,em,es,ef; { struct scsi_play_msf scsi_cmd; int retval; bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.op_code = PLAY_MSF; scsi_cmd.start_m = sm; scsi_cmd.start_s = ss; scsi_cmd.start_f = sf; scsi_cmd.end_m = em; scsi_cmd.end_s = es; scsi_cmd.end_f = ef; retval = cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), 0, 0, 20000, /* should be immed */ 0); return(retval); } /*******************************************************\ * Get scsi driver to send a "start up" command * \*******************************************************/ cd_pause(unit,go) int unit,go; { struct scsi_pause scsi_cmd; bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.op_code = PAUSE; scsi_cmd.resume = go; return (cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd), 0, 0, 2000, 0)); } /*******************************************************\ * Get scsi driver to send a "start up" command * \*******************************************************/ cd_reset(unit) int unit; { return(cd_scsi_cmd(unit,0,0,0,0,2000,SCSI_RESET)); } /*******************************************************\ * Get scsi driver to send a "start up" command * \*******************************************************/ cd_start_unit(unit,part,type) { struct scsi_start_stop scsi_cmd; if(type==CD_EJECT && (cd_data[unit]->openparts&~(1<openparts == 0 ) { bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd)); scsi_cmd.op_code = PREVENT_ALLOW; scsi_cmd.prevent=type==CD_EJECT?PR_ALLOW:type; if (cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(struct scsi_prevent), 0, 0, 5000, 0) != 0) { if(!(flags & SCSI_SILENT)) printf("cannot prevent/allow on cd%d\n", unit); return(0); } } return(1); } /******************************************************\ * Read Subchannel * \******************************************************/ cd_read_subchannel(unit,mode,format,track,data,len) int unit,mode,format,len; struct cd_sub_channel_info *data; { struct scsi_read_subchannel scsi_cmd; int error; bzero((struct scsi_generic *)&scsi_cmd,sizeof(scsi_cmd)); scsi_cmd.op_code=READ_SUBCHANNEL; if(mode==CD_MSF_FORMAT) scsi_cmd.msf=1; scsi_cmd.subQ=1; scsi_cmd.subchan_format=format; scsi_cmd.track=track; scsi_cmd.data_len[0]=(len)>>8; scsi_cmd.data_len[1]=(len)&0xff; return cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(struct scsi_read_subchannel), (u_char *)data, len, 5000, 0); } /*******************************************************\ * Read Table of contents * \*******************************************************/ cd_read_toc(unit,mode,start,data,len) int unit,mode,start,len; struct cd_toc_entry *data; { struct scsi_read_toc scsi_cmd; int error; int ntoc; bzero((struct scsi_generic *)&scsi_cmd,sizeof(scsi_cmd)); /*if(len!=sizeof(struct ioc_toc_header)) ntoc=((len)-sizeof(struct ioc_toc_header))/sizeof(struct cd_toc_entry); else*/ ntoc=len; scsi_cmd.op_code=READ_TOC; if(mode==CD_MSF_FORMAT) scsi_cmd.msf=1; scsi_cmd.from_track=start; scsi_cmd.data_len[0]=(ntoc)>>8; scsi_cmd.data_len[1]=(ntoc)&0xff; return cd_scsi_cmd(unit, (struct scsi_generic *)&scsi_cmd, sizeof(struct scsi_read_toc), (u_char *)data, len, 5000, 0); } #define b2tol(a) (((unsigned)(a##_1) << 8) + (unsigned)a##_0 ) /*******************************************************\ * Get the scsi driver to send a full inquiry to the * * device and use the results to fill out the disk * * parameter structure. * \*******************************************************/ int cd_get_parms(unit, flags) { struct cd_data *cd = cd_data[unit]; if(!cd) return 0; if(cd->flags & CDVALID) return 0; /*******************************************************\ * give a number of sectors so that sec * trks * cyls * * is <= disk_size * \*******************************************************/ if(cd_size(unit, flags)) { cd->flags |= CDVALID; return(0); } else { return(ENXIO); } } /*******************************************************\ * close the device.. only called if we are the LAST * * occurence of an open device * \*******************************************************/ int cdclose(dev_t dev) { unsigned char unit, part; unsigned int old_priority; unit = UNIT(dev); part = PARTITION(dev); if(scsi_debug & TRACEOPENS) printf("closing cd%d part %d\n",unit,part); cd_data[unit]->partflags[part] &= ~CDOPEN; cd_data[unit]->openparts &= ~(1 << part); cd_prevent_unit(unit,PR_ALLOW,SCSI_SILENT); return(0); } /*******************************************************\ * ask the scsi driver to perform a command for us. * * Call it through the switch table, and tell it which * * sub-unit we want, and what target and lu we wish to * * talk to. Also tell it where to find the command * * how long int is. * * Also tell it where to read/write the data, and how * * long the data is supposed to be * \*******************************************************/ int cd_scsi_cmd(unit,scsi_cmd,cmdlen,data_addr,datalen,timeout,flags) int unit,flags; struct scsi_generic *scsi_cmd; int cmdlen; int timeout; u_char *data_addr; int datalen; { struct scsi_xfer *xs; int retval; int s; struct cd_data *cd = cd_data[unit]; if(scsi_debug & PRINTROUTINES) printf("\ncd_scsi_cmd%d ",unit); if(cd->sc_sw) /* If we have a scsi driver */ { xs = cd_get_xs(unit,flags); /* should wait unless booting */ if(!xs) { printf("cd%d: cd_scsi_cmd: controller busy" " (this should never happen)\n",unit); return(EBUSY); } xs->flags |= INUSE; /*******************************************************\ * Fill out the scsi_xfer structure * \*******************************************************/ xs->flags |= flags; xs->adapter = cd->ctlr; xs->targ = cd->targ; xs->lu = cd->lu; xs->retries = CD_RETRIES; xs->timeout = timeout; xs->cmd = scsi_cmd; xs->cmdlen = cmdlen; xs->data = data_addr; xs->datalen = datalen; xs->resid = datalen; xs->when_done = (flags & SCSI_NOMASK) ?(int (*)())0 :cd_done; xs->done_arg = unit; xs->done_arg2 = (int)xs; retry: xs->error = XS_NOERROR; xs->bp = 0; retval = (*(cd->sc_sw->scsi_cmd))(xs); switch(retval) { case SUCCESSFULLY_QUEUED: s = splbio(); while(!(xs->flags & ITSDONE)) tsleep((caddr_t)xs,PRIBIO+1, "cd_cmd", 0); splx(s); case HAD_ERROR: /*printf("err = %d ",xs->error);*/ switch(xs->error) { case XS_NOERROR: retval = ESUCCESS; break; case XS_SENSE: retval = (cd_interpret_sense(unit,xs)); break; case XS_DRIVER_STUFFUP: retval = EIO; break; case XS_BUSY: case XS_TIMEOUT: if(xs->retries-- ) { xs->flags &= ~ITSDONE; goto retry; } retval = EIO; break; default: retval = EIO; printf("cd%d: unknown error category from scsi driver\n" ,unit); } break; case COMPLETE: retval = ESUCCESS; break; case TRY_AGAIN_LATER: if(xs->retries-- ) { if(tsleep( 0,PRIBIO + 2,"retry",hz * 2)) { xs->flags &= ~ITSDONE; goto retry; } } retval = EIO; break; default: retval = EIO; } cd_free_xs(unit,xs,flags); cdstart(unit); /* check if anything is waiting fr the xs */ } else { printf("cd%d: not set up\n",unit); return(EINVAL); } return(retval); } /***************************************************************\ * Look at the returned sense and act on the error and detirmine * * The unix error number to pass back... (0 = report no error) * \***************************************************************/ int cd_interpret_sense(unit,xs) int unit; struct scsi_xfer *xs; { struct scsi_sense_data *sense; int key; int silent; /***************************************************************\ * If the flags say errs are ok, then always return ok. * \***************************************************************/ if (xs->flags & SCSI_ERR_OK) return(ESUCCESS); silent = (xs->flags & SCSI_SILENT); sense = &(xs->sense); switch(sense->error_class) { case 7: { key=sense->ext.extended.sense_key; switch(key) { case 0x0: return(ESUCCESS); case 0x1: if(!silent) { printf("cd%d: soft error(corrected) ", unit); if(sense->valid) { printf("block no. %d (decimal)", (sense->ext.extended.info[0] <<24) | (sense->ext.extended.info[1] <<16) | (sense->ext.extended.info[2] <<8) | (sense->ext.extended.info[3] )); } printf("\n"); } return(ESUCCESS); case 0x2: if(!silent)printf("cd%d: not ready\n", unit); return(ENODEV); case 0x3: if(!silent) { printf("cd%d: medium error ", unit); if(sense->valid) { printf("block no. %d (decimal)", (sense->ext.extended.info[0] <<24) | (sense->ext.extended.info[1] <<16) | (sense->ext.extended.info[2] <<8) | (sense->ext.extended.info[3] )); } printf("\n"); } return(EIO); case 0x4: if(!silent)printf("cd%d: non-media hardware failure\n", unit); return(EIO); case 0x5: if(!silent)printf("cd%d: illegal request\n", unit); return(EINVAL); case 0x6: if(!silent)printf("cd%d: media change\n", unit); cd_data[unit]->flags &= ~(CDVALID | CDHAVELABEL); if (cd_data[unit]->openparts) { return(EIO); } return(ESUCCESS); case 0x7: if(!silent) { printf("cd%d: attempted protection violation ", unit); if(sense->valid) { printf("block no. %d (decimal)\n", (sense->ext.extended.info[0] <<24) | (sense->ext.extended.info[1] <<16) | (sense->ext.extended.info[2] <<8) | (sense->ext.extended.info[3] )); } printf("\n"); } return(EACCES); case 0x8: if(!silent) { printf("cd%d: block wrong state (worm)\n", unit); if(sense->valid) { printf("block no. %d (decimal)\n", (sense->ext.extended.info[0] <<24) | (sense->ext.extended.info[1] <<16) | (sense->ext.extended.info[2] <<8) | (sense->ext.extended.info[3] )); } printf("\n"); } return(EIO); case 0x9: if(!silent)printf("cd%d: vendor unique\n", unit); return(EIO); case 0xa: if(!silent)printf("cd%d: copy aborted\n", unit); return(EIO); case 0xb: if(!silent)printf("cd%d: command aborted\n", unit); return(EIO); case 0xc: if(!silent) { printf("cd%d: search returned\n", unit); if(sense->valid) { printf("block no. %d (decimal)\n", (sense->ext.extended.info[0] <<24) | (sense->ext.extended.info[1] <<16) | (sense->ext.extended.info[2] <<8) | (sense->ext.extended.info[3] )); } printf("\n"); } return(ESUCCESS); case 0xd: if(!silent)printf("cd%d: volume overflow\n", unit); return(ENOSPC); case 0xe: if(!silent) { printf("cd%d: verify miscompare\n", unit); if(sense->valid) { printf("block no. %d (decimal)\n", (sense->ext.extended.info[0] <<24) | (sense->ext.extended.info[1] <<16) | (sense->ext.extended.info[2] <<8) | (sense->ext.extended.info[3] )); } printf("\n"); } return(EIO); case 0xf: if(!silent)printf("cd%d: unknown error key\n", unit); return(EIO); } break; } case 0: case 1: case 2: case 3: case 4: case 5: case 6: { if(!silent)printf("cd%d: error class %d code %d\n", unit, sense->error_class, sense->error_code); if(sense->valid) if(!silent)printf("block no. %d (decimal)\n", (sense->ext.unextended.blockhi <<16) + (sense->ext.unextended.blockmed <<8) + (sense->ext.unextended.blocklow )); } return(EIO); } } int cdsize(dev_t dev) { return (-1); } show_mem(address,num) unsigned char *address; int num; { int x,y; printf("------------------------------"); for (y = 0; y