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NetBSD/sys/scsi/cd.c

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/*
* 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 <deraadt@fsa.ca>
*
* 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 1.15 1993/07/19 11:30:49 cgd Exp $
*/
#define SPLCD splbio
#define ESUCCESS 0
#include "cd.h"
#include "sys/types.h"
#include "sys/param.h"
#include "sys/dkbad.h"
#include "sys/systm.h"
#include "sys/conf.h"
#include "sys/file.h"
#include "sys/stat.h"
#include "sys/ioctl.h"
#include "sys/buf.h"
#include "sys/uio.h"
#include "sys/malloc.h"
#include "sys/cdio.h"
#include "sys/errno.h"
#include "sys/disklabel.h"
#include "scsi/scsi_all.h"
#include "scsi/scsi_cd.h"
#include "scsi/cddefs.h"
#include "scsi/scsi_disk.h" /* rw_big and start_stop come from there */
#include "scsi/scsiconf.h"
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();
int 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; i++)
if(cd_data[i]==NULL)
*unit = i;
}
if(*unit >= 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! */
sleep((caddr_t)&cd_free_xfer[unit], PRIBIO+1);
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. *
\*******************************************************/
int 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 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)||
len<sizeof(struct cd_sub_channel_header)) {
error=EINVAL;
break;
}
if(error = cd_read_subchannel(unit,args->address_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) || len<sizeof(struct cd_toc_entry)) {
error=EINVAL;
break;
}
if(error = cd_read_toc(unit,te->address_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;
cd->disklabel.d_partitions[0].p_size = cd->params.disksize;
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 "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<<part)) == 0 ) {
cd_prevent_unit(unit,CD_EJECT,0);
}
bzero((struct scsi_generic *)&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = START_STOP;
scsi_cmd.start = type==CD_START?1:0;
scsi_cmd.loej = type==CD_EJECT?1:0;
if (cd_scsi_cmd(unit,
(struct scsi_generic *)&scsi_cmd,
sizeof(scsi_cmd),
0,
0,
2000,
0) != 0) {
return(ENXIO);
} else
return(0);
}
/*******************************************************\
* Prevent or allow the user to remove the disk *
\*******************************************************/
cd_prevent_unit(unit,type,flags)
int unit,type,flags;
{
struct scsi_prevent scsi_cmd;
if(type==CD_EJECT || type==PR_PREVENT || cd_data[unit]->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))
sleep((caddr_t)xs,PRIBIO+1);
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<num; y += 1)
{
if(!(y % 16))
printf("\n%03d: ",y);
printf("%02x ",*address++);
}
printf("\n------------------------------\n");
}
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