Pre 3.0 branch cleanup sos#1: wcd

Superceded by acd driver...

11 files changed, 15 insertions, 1429 deletions

diff --git a/sys/amd64/conf/GENERIC b/sys/amd64/conf/GENERIC
index 5d16fd1..1d2cc2c 100644
--- a/sys/amd64/conf/GENERIC
+++ b/sys/amd64/conf/GENERIC
@@ -11,7 +11,7 @@
 # device lines is present in the ./LINT configuration file. If you are 
 # in doubt as to the purpose or necessity of a line, check first in LINT.
 #
-#	$Id: GENERIC,v 1.138 1998/12/27 13:12:59 phk Exp $
+#	$Id: GENERIC,v 1.139 1998/12/27 13:40:55 phk Exp $
 
 machine		"i386"
 cpu		"I386_CPU"
@@ -70,7 +70,7 @@ disk		wd3	at wdc1 drive 1
 
 options		ATAPI		#Enable ATAPI support for IDE bus
 options		ATAPI_STATIC	#Don't do it as an LKM
-device		wcd0		#IDE CD-ROM
+device		acd0		#IDE CD-ROM
 device		wfd0		#IDE Floppy (e.g. LS-120)
 
 # A single entry for any of these controllers (ncr, ahb, ahc) is
diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index 01cd637..2781547 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -2,7 +2,7 @@
 # LINT -- config file for checking all the sources, tries to pull in
 #	as much of the source tree as it can.
 #
-#	$Id: LINT,v 1.516 1998/12/27 13:06:40 phk Exp $
+#	$Id: LINT,v 1.517 1998/12/27 13:40:55 phk Exp $
 #
 # NB: You probably don't want to try running a kernel built from this
 # file.  Instead, you should start from GENERIC, and add options from
@@ -982,13 +982,9 @@ options		ATAPI_STATIC	#Don't do it as an LKM
 #
 options		IDE_DELAY=8000	# Be optimistic about Joe IDE device
 
-# Use either the acd or the wcd device, not both!
 # IDE CD-ROM & CD-R/RW  driver - requires wdc controller and ATAPI option
 device          acd0
 
-# IDE CD-ROM driver - requires wdc controller and ATAPI option
-device          wcd0
-
 # IDE floppy driver - requires wdc controller and ATAPI option
 device          wfd0
 
diff --git a/sys/conf/files.i386 b/sys/conf/files.i386
index 9ce5364..0ef6faa 100644
--- a/sys/conf/files.i386
+++ b/sys/conf/files.i386
@@ -1,7 +1,7 @@
 # This file tells config what files go into building a kernel,
 # files marked standard are always included.
 #
-#	$Id: files.i386,v 1.211 1998/12/27 13:06:41 phk Exp $
+#	$Id: files.i386,v 1.212 1998/12/27 13:40:56 phk Exp $
 #
 # The long compile-with and dependency lines are required because of
 # limitations in config: backslash-newline doesn't work in strings, and
@@ -239,7 +239,6 @@ i386/isa/wd.c			optional	wdc	device-driver
 i386/isa/wd.c			optional	wd	device-driver
 i386/isa/atapi.c		optional	atapi	device-driver
 i386/isa/atapi-cd.c		optional	acd	device-driver
-i386/isa/wcd.c			optional	wcd	device-driver
 i386/isa/wfd.c			optional	wfd	device-driver
 i386/isa/wst.c			optional	wst	device-driver
 i386/isa/wt.c			optional	wt	device-driver
diff --git a/sys/conf/majors b/sys/conf/majors
index 963257b..53781ab 100644
--- a/sys/conf/majors
+++ b/sys/conf/majors
@@ -1,4 +1,4 @@
-$Id: majors.i386,v 1.54 1998/12/02 21:26:11 jkh Exp $
+$Id: majors.i386,v 1.55 1998/12/03 08:32:49 jkh Exp $
 
 Hopefully, this list will one day be obsoleted by DEVFS, but for now
 this is the current allocation of device major numbers.
@@ -32,7 +32,7 @@ blkdev	name		comments
 16	scd		Sony CDROM interface
 17	matcd		Matsushita/Panasonic/Creative(SB) CDROM interface
 18	ata		"device independent" ATA/IDE driver
-19	wcdb		ATAPI CDROM client of "ata"
+19	acdb		ATAPI CDROM client of "ata"
 21	ccd		concatenated disk
 22	gd		Geometry disk.
 24	wstb		ATAPI tape client of "ata"
diff --git a/sys/i386/conf/GENERIC b/sys/i386/conf/GENERIC
index 5d16fd1..1d2cc2c 100644
--- a/sys/i386/conf/GENERIC
+++ b/sys/i386/conf/GENERIC
@@ -11,7 +11,7 @@
 # device lines is present in the ./LINT configuration file. If you are 
 # in doubt as to the purpose or necessity of a line, check first in LINT.
 #
-#	$Id: GENERIC,v 1.138 1998/12/27 13:12:59 phk Exp $
+#	$Id: GENERIC,v 1.139 1998/12/27 13:40:55 phk Exp $
 
 machine		"i386"
 cpu		"I386_CPU"
@@ -70,7 +70,7 @@ disk		wd3	at wdc1 drive 1
 
 options		ATAPI		#Enable ATAPI support for IDE bus
 options		ATAPI_STATIC	#Don't do it as an LKM
-device		wcd0		#IDE CD-ROM
+device		acd0		#IDE CD-ROM
 device		wfd0		#IDE Floppy (e.g. LS-120)
 
 # A single entry for any of these controllers (ncr, ahb, ahc) is
diff --git a/sys/i386/conf/LINT b/sys/i386/conf/LINT
index 01cd637..2781547 100644
--- a/sys/i386/conf/LINT
+++ b/sys/i386/conf/LINT
@@ -2,7 +2,7 @@
 # LINT -- config file for checking all the sources, tries to pull in
 #	as much of the source tree as it can.
 #
-#	$Id: LINT,v 1.516 1998/12/27 13:06:40 phk Exp $
+#	$Id: LINT,v 1.517 1998/12/27 13:40:55 phk Exp $
 #
 # NB: You probably don't want to try running a kernel built from this
 # file.  Instead, you should start from GENERIC, and add options from
@@ -982,13 +982,9 @@ options		ATAPI_STATIC	#Don't do it as an LKM
 #
 options		IDE_DELAY=8000	# Be optimistic about Joe IDE device
 
-# Use either the acd or the wcd device, not both!
 # IDE CD-ROM & CD-R/RW  driver - requires wdc controller and ATAPI option
 device          acd0
 
-# IDE CD-ROM driver - requires wdc controller and ATAPI option
-device          wcd0
-
 # IDE floppy driver - requires wdc controller and ATAPI option
 device          wfd0
 
diff --git a/sys/i386/conf/NOTES b/sys/i386/conf/NOTES
index 01cd637..2781547 100644
--- a/sys/i386/conf/NOTES
+++ b/sys/i386/conf/NOTES
@@ -2,7 +2,7 @@
 # LINT -- config file for checking all the sources, tries to pull in
 #	as much of the source tree as it can.
 #
-#	$Id: LINT,v 1.516 1998/12/27 13:06:40 phk Exp $
+#	$Id: LINT,v 1.517 1998/12/27 13:40:55 phk Exp $
 #
 # NB: You probably don't want to try running a kernel built from this
 # file.  Instead, you should start from GENERIC, and add options from
@@ -982,13 +982,9 @@ options		ATAPI_STATIC	#Don't do it as an LKM
 #
 options		IDE_DELAY=8000	# Be optimistic about Joe IDE device
 
-# Use either the acd or the wcd device, not both!
 # IDE CD-ROM & CD-R/RW  driver - requires wdc controller and ATAPI option
 device          acd0
 
-# IDE CD-ROM driver - requires wdc controller and ATAPI option
-device          wcd0
-
 # IDE floppy driver - requires wdc controller and ATAPI option
 device          wfd0
 
diff --git a/sys/i386/conf/devices.i386 b/sys/i386/conf/devices.i386
index ccba4ec..b8d8664 100644
--- a/sys/i386/conf/devices.i386
+++ b/sys/i386/conf/devices.i386
@@ -1,6 +1,6 @@
 # This file tells what major numbers the various possible swap devices have.
 #
-#	$Id: devices.i386,v 1.13 1998/02/17 11:33:31 sos Exp $
+#	$Id: devices.i386,v 1.14 1998/09/15 10:01:13 gibbs Exp $
 #
 wd	0
 wfd	1
@@ -13,5 +13,5 @@ mcd	7
 vn	15
 scd	16
 pcd	17
-wcd	19
+acd	19
 wst	24
diff --git a/sys/i386/conf/files.i386 b/sys/i386/conf/files.i386
index 9ce5364..0ef6faa 100644
--- a/sys/i386/conf/files.i386
+++ b/sys/i386/conf/files.i386
@@ -1,7 +1,7 @@
 # This file tells config what files go into building a kernel,
 # files marked standard are always included.
 #
-#	$Id: files.i386,v 1.211 1998/12/27 13:06:41 phk Exp $
+#	$Id: files.i386,v 1.212 1998/12/27 13:40:56 phk Exp $
 #
 # The long compile-with and dependency lines are required because of
 # limitations in config: backslash-newline doesn't work in strings, and
@@ -239,7 +239,6 @@ i386/isa/wd.c			optional	wdc	device-driver
 i386/isa/wd.c			optional	wd	device-driver
 i386/isa/atapi.c		optional	atapi	device-driver
 i386/isa/atapi-cd.c		optional	acd	device-driver
-i386/isa/wcd.c			optional	wcd	device-driver
 i386/isa/wfd.c			optional	wfd	device-driver
 i386/isa/wst.c			optional	wst	device-driver
 i386/isa/wt.c			optional	wt	device-driver
diff --git a/sys/i386/conf/majors.i386 b/sys/i386/conf/majors.i386
index 963257b..53781ab 100644
--- a/sys/i386/conf/majors.i386
+++ b/sys/i386/conf/majors.i386
@@ -1,4 +1,4 @@
-$Id: majors.i386,v 1.54 1998/12/02 21:26:11 jkh Exp $
+$Id: majors.i386,v 1.55 1998/12/03 08:32:49 jkh Exp $
 
 Hopefully, this list will one day be obsoleted by DEVFS, but for now
 this is the current allocation of device major numbers.
@@ -32,7 +32,7 @@ blkdev	name		comments
 16	scd		Sony CDROM interface
 17	matcd		Matsushita/Panasonic/Creative(SB) CDROM interface
 18	ata		"device independent" ATA/IDE driver
-19	wcdb		ATAPI CDROM client of "ata"
+19	acdb		ATAPI CDROM client of "ata"
 21	ccd		concatenated disk
 22	gd		Geometry disk.
 24	wstb		ATAPI tape client of "ata"
diff --git a/sys/i386/isa/wcd.c b/sys/i386/isa/wcd.c
deleted file mode 100644
index 3f4081f..0000000
--- a/sys/i386/isa/wcd.c
+++ /dev/null
@@ -1,1400 +0,0 @@
-/*
- * IDE CD-ROM driver for FreeBSD.
- * Supports ATAPI-compatible drives.
- *
- * Copyright (C) 1995 Cronyx Ltd.
- * Author Serge Vakulenko, <vak@cronyx.ru>
- *
- * This software is distributed with NO WARRANTIES, not even the implied
- * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Authors grant any other persons or organisations permission to use
- * or modify this software as long as this message is kept with the software,
- * all derivative works or modified versions.
- *
- * From: Version 1.9, Mon Oct  9 20:27:42 MSK 1995
- * $Id: wcd.c,v 1.61 1998/12/13 23:30:15 steve Exp $
- */
-
-#include "wdc.h"
-#include "wcd.h"
-#include "opt_atapi.h"
-#include "opt_devfs.h"
-
-#if NWCD > 0 && NWDC > 0 && defined (ATAPI)
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/proc.h>
-#include <sys/malloc.h>
-#include <sys/buf.h>
-#include <sys/devicestat.h>
-#include <sys/disklabel.h>
-#include <sys/cdio.h>
-#include <sys/conf.h>
-#include <sys/stat.h>
-#ifdef DEVFS
-#include <sys/devfsext.h>
-#endif /*DEVFS*/
-
-#include <i386/isa/atapi.h>
-
-static	d_open_t	wcdopen;
-static	d_read_t	wcdread;
-static	d_close_t	wcdclose;
-static	d_ioctl_t	wcdioctl;
-static	d_strategy_t	wcdstrategy;
-
-#define CDEV_MAJOR 69
-#define BDEV_MAJOR 19
-static struct cdevsw wcd_cdevsw = 
-	{ wcdopen,	wcdclose,	wcdread,	nowrite,	/*69*/
-	  wcdioctl,	nostop,		nullreset,	nodevtotty,/* atapi */
-	  seltrue,	nommap,		wcdstrategy,	"wcd",
-	  NULL,		-1,		nodump,		nopsize,
-	  D_DISK,	0,		-1 };
-
-#ifndef ATAPI_STATIC
-static
-#endif
-int  wcdattach(struct atapi*, int, struct atapi_params*, int);
-
-#define NUNIT   16                      /* Max. number of devices */
-#define SECSIZE 2048                    /* CD-ROM sector size in bytes */
-
-#define F_BOPEN         0x0001          /* The block device is opened */
-#define F_MEDIA_CHANGED 0x0002          /* The media have changed since open */
-#define F_DEBUG         0x0004          /* Print debug info */
-#define F_LOCKED        0x0008          /* This unit is locked (or should be) */
-
-/*
- * Disc table of contents.
- */
-#define MAXTRK 99
-struct toc {
-	struct ioc_toc_header hdr;
-	struct cd_toc_entry tab[MAXTRK+1];      /* One extra for the leadout */
-};
-
-/*
- * Volume size info.
- */
-struct volinfo {
-	u_long volsize;         /* Volume size in blocks */
-	u_long blksize;         /* Block size in bytes */
-};
-
-/*
- * Current subchannel status.
- */
-struct subchan {
-	u_char void0;
-	u_char audio_status;
-	u_short data_length;
-	u_char data_format;
-	u_char control;
-	u_char track;
-	u_char indx;
-	u_long abslba;
-	u_long rellba;
-};
-
-/*
- * Audio Control Parameters Page
- */
-struct audiopage {
-	/* Mode data header */
-	u_short data_length;
-	u_char  medium_type;
-	u_char  reserved1[5];
-
-	/* Audio control page */
-	u_char  page_code;
-#define AUDIO_PAGE      0x0e
-#define AUDIO_PAGE_MASK 0x4e            /* changeable values */
-	u_char  param_len;
-	u_char  flags;
-#define CD_PA_SOTC      0x02            /* mandatory */
-#define CD_PA_IMMED     0x04            /* always 1 */
-	u_char  reserved3[3];
-	u_short lb_per_sec;
-	struct port_control {
-		u_char  channels : 4;
-#define CHANNEL_0       1               /* mandatory */
-#define CHANNEL_1       2               /* mandatory */
-#define CHANNEL_2       4               /* optional */
-#define CHANNEL_3       8               /* optional */
-		u_char  volume;
-	} port[4];
-};
-
-/*
- * CD-ROM Capabilities and Mechanical Status Page
- */
-struct cappage {
-	/* Mode data header */
-	u_short data_length;
-	u_char  medium_type;
-#define MDT_UNKNOWN     0x00
-#define MDT_DATA_120    0x01
-#define MDT_AUDIO_120   0x02
-#define MDT_COMB_120    0x03
-#define MDT_PHOTO_120   0x04
-#define MDT_DATA_80     0x05
-#define MDT_AUDIO_80    0x06
-#define MDT_COMB_80     0x07
-#define MDT_PHOTO_80    0x08
-#define MDT_NO_DISC     0x70
-#define MDT_DOOR_OPEN   0x71
-#define MDT_FMT_ERROR   0x72
-	u_char  reserved1[5];
-
-	/* Capabilities page */
-	u_char  page_code;
-#define CAP_PAGE        0x2a
-	u_char  param_len;
-	u_char  reserved2[2];
-
-	u_int   audio_play : 1;         /* audio play supported */
-	u_int   composite : 1;          /* composite audio/video supported */
-	u_int   dport1 : 1;             /* digital audio on port 1 */
-	u_int   dport2 : 1;             /* digital audio on port 2 */
-	u_int   mode2_form1 : 1;        /* mode 2 form 1 (XA) read */
-	u_int   mode2_form2 : 1;        /* mode 2 form 2 format */
-	u_int   multisession : 1;       /* multi-session photo-CD */
-	u_int   : 1;
-	u_int   cd_da : 1;              /* audio-CD read supported */
-	u_int   cd_da_stream : 1;       /* CD-DA streaming */
-	u_int   rw : 1;                 /* combined R-W subchannels */
-	u_int   rw_corr : 1;            /* R-W subchannel data corrected */
-	u_int   c2 : 1;                 /* C2 error pointers supported */
-	u_int   isrc : 1;               /* can return the ISRC info */
-	u_int   upc : 1;                /* can return the catalog number UPC */
-	u_int   : 1;
-	u_int   lock : 1;               /* could be locked */
-	u_int   locked : 1;             /* current lock state */
-	u_int   prevent : 1;            /* prevent jumper installed */
-	u_int   eject : 1;              /* can eject */
-	u_int   : 1;
-	u_int   mech : 3;               /* loading mechanism type */
-#define MECH_CADDY      0
-#define MECH_TRAY       1
-#define MECH_POPUP      2
-#define MECH_CHANGER    4
-#define MECH_CARTRIDGE  5
-	u_int   sep_vol : 1;            /* independent volume of channels */
-	u_int   sep_mute : 1;           /* independent mute of channels */
-	u_int   : 6;
-
-	u_short max_speed;              /* max raw data rate in bytes/1000 */
-	u_short max_vol_levels;         /* number of discrete volume levels */
-	u_short buf_size;               /* internal buffer size in bytes/1024 */
-	u_short cur_speed;              /* current data rate in bytes/1000  */
-
-	/* Digital drive output format description (optional?) */
-	u_char  reserved3;
-	u_int   bckf : 1;               /* data valid on failing edge of BCK */
-	u_int   rch : 1;                /* high LRCK indicates left channel */
-	u_int   lsbf : 1;               /* set if LSB first */
-	u_int   dlen: 2;
-#define DLEN_32         0               /* 32 BCKs */
-#define DLEN_16         1               /* 16 BCKs */
-#define DLEN_24         2               /* 24 BCKs */
-#define DLEN_24_I2S     3               /* 24 BCKs (I2S) */
-	u_int   : 3;
-	u_char  reserved4[2];
-};
-
-/*
- * CDROM changer mechanism status structure
- */
-struct changer {
-	u_int	current_slot : 5;	/* active changer slot */
-	u_int	mech_state : 2;		/* current changer state */
-#define CH_READY	0
-#define CH_LOADING	1
-#define CH_UNLOADING	2
-#define CH_INITIALIZING	3
-	u_int	fault : 1;		/* fault in last operation */
-	u_int	reserved0 : 5;
-	u_int	cd_state : 3;		/* current mechanism state */
-#define CD_IDLE		0
-#define CD_AUDIO_ACTIVE	1
-#define CD_AUDIO_SCAN	2
-#define CD_HOST_ACTIVE	3
-#define CD_NO_STATE	7
-	u_char	current_lba[3];		/* current LBA */
-	u_char	slots;			/* number of available slots */
-	u_short	table_length;		/* slot table length */
-	struct {
-		u_int  changed : 1;	/* media has changed in this slot */
-		u_int  unused : 6;
-		u_int  present : 1;	/* slot has a CD present */
-		u_char reserved0;
-		u_char reserved1;
-		u_char reserved2;
-	} slot[32];
-};
-
-struct wcd {
-	struct atapi *ata;              /* Controller structure */
-	int unit;                       /* IDE bus drive unit */
-	int lun;                        /* Logical device unit */
-	int flags;                      /* Device state flags */
-	int refcnt;                     /* The number of raw opens */
-	struct buf_queue_head buf_queue;/* Queue of i/o requests */
-	struct atapi_params *param;     /* Drive parameters table */
-	struct toc toc;                 /* Table of disc contents */
-	struct volinfo info;            /* Volume size info */
-	struct audiopage au;            /* Audio page info */
-	struct cappage cap;             /* Capabilities page info */
-	struct audiopage aumask;        /* Audio page mask */
-	struct subchan subchan;         /* Subchannel info */
-	char description[80];           /* Device description */
-	struct changer *changer_info;	/* changer info */
-	int slot;			/* this lun's slot number */
-	struct devstat device_stats;	/* devstat parameters */
-#ifdef	DEVFS
-	void	*ra_devfs_token;
-	void	*rc_devfs_token;
-	void	*a_devfs_token;
-	void	*c_devfs_token;
-#endif
-};
-
-static struct wcd *wcdtab[NUNIT]; /* Drive info by unit number */
-static int wcdnlun = 0;           /* Number of configured drives */
-
-static struct wcd *wcd_init_lun(struct atapi *ata, int unit, 
-	struct atapi_params *ap, int lun);
-static void wcd_start (struct wcd *t);
-static void wcd_done (struct wcd *t, struct buf *bp, int resid,
-	struct atapires result);
-static void wcd_error (struct wcd *t, struct atapires result);
-static int wcd_read_toc (struct wcd *t);
-static int wcd_request_wait (struct wcd *t, u_char cmd, u_char a1, u_char a2,
-	u_char a3, u_char a4, u_char a5, u_char a6, u_char a7, u_char a8,
-	u_char a9, char *addr, int count);
-static void wcd_describe (struct wcd *t);
-static int wcd_setchan (struct wcd *t,
-	u_char c0, u_char c1, u_char c2, u_char c3);
-static int wcd_eject (struct wcd *t, int closeit);
-static void wcd_select_slot(struct wcd *cdp);
-
-/*
- * Dump the array in hexadecimal format for debugging purposes.
- */
-static void wcd_dump (int lun, char *label, void *data, int len)
-{
-	u_char *p = data;
-
-	printf ("wcd%d: %s %x", lun, label, *p++);
-	while (--len > 0)
-		printf ("-%x", *p++);
-	printf ("\n");
-}
-
-struct wcd *
-wcd_init_lun(struct atapi *ata, int unit, struct atapi_params *ap, int lun)
-{
-	struct wcd *ptr;
-	ptr = malloc(sizeof(struct wcd), M_TEMP, M_NOWAIT);
-	if (!ptr)
-		return NULL;
-	bzero(ptr, sizeof(struct wcd));
-	bufq_init(&ptr->buf_queue);
-	ptr->ata = ata;
-	ptr->unit = unit;
-	ptr->lun = lun;
-	ptr->param = ap;
-	ptr->flags = F_MEDIA_CHANGED;
-	ptr->refcnt = 0;
-	ptr->slot = -1;
-	ptr->changer_info = NULL;
-#ifdef DEVFS
-	ptr->ra_devfs_token = 
-		devfs_add_devswf(&wcd_cdevsw, dkmakeminor(lun, 0, 0),
-				 DV_CHR, UID_ROOT, GID_OPERATOR, 0640,
-				 "rwcd%da", lun);
-	ptr->rc_devfs_token = 
-		devfs_add_devswf(&wcd_cdevsw, dkmakeminor(lun, 0, RAW_PART),
-				 DV_CHR, UID_ROOT, GID_OPERATOR, 0640,
-				 "rwcd%dc", lun);
-	ptr->a_devfs_token = 
-		devfs_add_devswf(&wcd_cdevsw, dkmakeminor(lun, 0, 0),
-				 DV_BLK, UID_ROOT, GID_OPERATOR, 0640,
-				 "wcd%da", lun);
-	ptr->c_devfs_token = 
-		devfs_add_devswf(&wcd_cdevsw, dkmakeminor(lun, 0, RAW_PART),
-				 DV_BLK, UID_ROOT, GID_OPERATOR, 0640,
-				 "wcd%dc", lun);
-#endif
-	/*
-	 * Export the unit to the devstat interface.
-	 */
-	devstat_add_entry(&ptr->device_stats, "wcd", 
-			  lun, SECSIZE,
-			  DEVSTAT_NO_ORDERED_TAGS,
-			  DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_IDE);
-	return ptr;
-}
-
-#ifndef ATAPI_STATIC
-static
-#endif
-int 
-wcdattach (struct atapi *ata, int unit, struct atapi_params *ap, int debug)
-{
-	struct wcd *cdp;
-	struct atapires result;
-	struct changer *chp;
-	int i;
-
-	if (wcdnlun >= NUNIT) {
-		printf ("wcd: too many units\n");
-		return (0);
-	}
-	if (!atapi_request_immediate) {
-		printf("wcd: configuration error, ATAPI core code not present!\n");
-		printf("wcd: check `options ATAPI_STATIC' in your kernel config file!\n");
-		return (0);
-	}
-	if ((cdp = wcd_init_lun(ata, unit, ap, wcdnlun)) == NULL) {
-		printf("wcd: out of memory\n");
-		return 0;
-	}
-        wcdtab[wcdnlun] = cdp;
-
-	if (debug) {
-		cdp->flags |= F_DEBUG;
-		/* Print params. */
-		wcd_dump (cdp->lun, "info", ap, sizeof *ap);
-	}
-
-	/* Get drive capabilities. */
-	result = atapi_request_immediate (ata, unit, ATAPI_MODE_SENSE,
-		0, CAP_PAGE, 0, 0, 0, 0, sizeof (cdp->cap) >> 8, sizeof (cdp->cap),
-		0, 0, 0, 0, 0, 0, 0, (char*) &cdp->cap, sizeof (cdp->cap));
-
-	/* Do it twice to avoid the stale media changed state. */
-	if (result.code == RES_ERR &&
-	    (result.error & AER_SKEY) == AER_SK_UNIT_ATTENTION)
-		result = atapi_request_immediate (ata, unit, ATAPI_MODE_SENSE,
-			0, CAP_PAGE, 0, 0, 0, 0, sizeof (cdp->cap) >> 8,
-			sizeof (cdp->cap), 0, 0, 0, 0, 0, 0, 0,
-			(char*) &cdp->cap, sizeof (cdp->cap));
-
-	/* Some drives have shorter capabilities page. */
-	if (result.code == RES_UNDERRUN)
-		result.code = 0;
-
-	if (result.code == 0) {
-		wcd_describe (cdp);
-		if (cdp->flags & F_DEBUG)
-			wcd_dump (cdp->lun, "cap", &cdp->cap, sizeof(cdp->cap));
-	}
-	
-	/* If this is a changer device, allocate the neeeded lun's */
-	if (cdp->cap.mech == MECH_CHANGER) {
-		chp = malloc(sizeof(struct changer), M_TEMP, M_NOWAIT);
-		if (chp == NULL) {
-		    	printf("wcd: out of memory\n");
-		    	return 0;
-		}
-		bzero(chp, sizeof(struct changer));
-		result = atapi_request_immediate(ata, unit, ATAPI_MECH_STATUS,
-			0, 0, 0, 0, 0, 0, 0,
-			sizeof(struct changer)> 8, sizeof(struct changer),
-			0, 0, 0, 0, 0, 0, 
-			(char*) chp, sizeof(struct changer));
-		if (cdp->flags & F_DEBUG) {
-			printf("result.code=%d curr=%02x slots=%d len=%d\n", 
-				result.code, chp->current_slot, chp->slots, 
-				htons(chp->table_length));
-		}
-		if (result.code == RES_UNDERRUN)
-			result.code = 0;
-		if (result.code == 0) {
-			chp->table_length = htons(chp->table_length);
-		    	for (i=0; i<chp->slots && wcdnlun<NUNIT; i++) {
-				if (i>0) {
-					cdp = wcd_init_lun(ata,unit,ap,wcdnlun);
-					if (cdp == NULL) {
-				    		printf("wcd: out of memory\n");
-				    		return 0;
-		       			}
-				}
-        	    		cdp->slot = i;
-				cdp->changer_info = chp;
-				printf("wcd%d: changer slot %d %s\n",
-				       wcdnlun,
-				       i, (chp->slot[i].present ?
-				       "disk present" : "no disk"));
-        	    		wcdtab[wcdnlun++] = cdp;
-		    	}
-		    	if (wcdnlun >= NUNIT) {
-				printf ("wcd: too many units\n");
-				return (0);
-		    	}
-		}
-	}
-	else
-        	wcdnlun++;
-	return (1);
-}
-
-void wcd_describe (struct wcd *t)
-{
-	char *m;
-
-	t->cap.max_speed      = ntohs (t->cap.max_speed);
-	t->cap.max_vol_levels = ntohs (t->cap.max_vol_levels);
-	t->cap.buf_size       = ntohs (t->cap.buf_size);
-	t->cap.cur_speed      = ntohs (t->cap.cur_speed);
-
-	printf ("wcd%d: ", t->lun);
-	if (t->cap.cur_speed != t->cap.max_speed)
-		printf ("%d/", t->cap.cur_speed * 1000 / 1024);
-	printf ("%dKB/sec", t->cap.max_speed * 1000 / 1024);
-	if (t->cap.buf_size)
-		printf (", %dKB cache", t->cap.buf_size);
-
-	if (t->cap.audio_play)
-		printf (", audio play");
-	if (t->cap.max_vol_levels)
-		printf (", %d volume levels", t->cap.max_vol_levels);
-
-	switch (t->cap.mech) {
-	default:             m = 0;           break;
-	case MECH_CADDY:     m = "caddy";     break;
-	case MECH_TRAY:      m = "tray";      break;
-	case MECH_POPUP:     m = "popup";     break;
-	case MECH_CHANGER:   m = "changer";   break;
-	case MECH_CARTRIDGE: m = "cartridge"; break;
-	}
-	if (m)
-		printf (", %s%s", t->cap.eject ? "ejectable " : "", m);
-	else if (t->cap.eject)
-		printf (", eject");
-	printf ("\n");
-
-	if (t->cap.mech != MECH_CHANGER) {
-		printf ("wcd%d: ", t->lun);
-		switch (t->cap.medium_type) {
-		case MDT_UNKNOWN:
-			printf ("medium type unknown"); break;
-		case MDT_DATA_120:  
-			printf ("120mm data disc loaded"); break;
-		case MDT_AUDIO_120: 
-			printf ("120mm audio disc loaded"); break;
-		case MDT_COMB_120:  
-			printf ("120mm data/audio disc loaded"); break;
-		case MDT_PHOTO_120: 
-			printf ("120mm photo disc loaded"); break;
-		case MDT_DATA_80:   
-			printf ("80mm data disc loaded"); break;
-		case MDT_AUDIO_80:  
-			printf ("80mm audio disc loaded"); break;
-		case MDT_COMB_80:   
-			printf ("80mm data/audio disc loaded"); break;
-		case MDT_PHOTO_80:  
-			printf ("80mm photo disc loaded"); break;
-		case MDT_NO_DISC:   
-			printf ("no disc inside"); break;
-		case MDT_DOOR_OPEN: 
-			printf ("door open"); break;
-		case MDT_FMT_ERROR: 
-			printf ("medium format error"); break;
-		default:    
-			printf ("medium type=0x%x", t->cap.medium_type); break;
-		}
-	}
-	if (t->cap.lock)
-		printf (t->cap.locked ? ", locked" : ", unlocked");
-	if (t->cap.prevent)
-		printf (", lock protected");
-	printf ("\n");
-}
-
-static int 
-wcdopen (dev_t dev, int flags, int fmt, struct proc *p)
-{
-	int lun = dkunit(dev);
-	struct wcd *t;
-
-	/* Check device number is legal and ATAPI driver is loaded. */
-	if (lun >= wcdnlun || ! atapi_request_immediate)
-		return (ENXIO);
-	t = wcdtab[lun];
-	/* On the first open, read the table of contents. */
-	if (! (t->flags & F_BOPEN) && ! t->refcnt) {
-		/* Read table of contents. */
-		if (wcd_read_toc (t) != 0)
-			return (EIO);
-
-		/* Lock the media. */
-		wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
-			0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
-		t->flags |= F_LOCKED;
-	}
-	if (fmt == S_IFCHR)
-		++t->refcnt;
-	else
-		t->flags |= F_BOPEN;
-	return (0);
-}
-
-/*
- * Close the device.  Only called if we are the LAST
- * occurence of an open device.
- */
-static int
-wcdclose (dev_t dev, int flags, int fmt, struct proc *p)
-{
-	int lun = dkunit(dev);
-	struct wcd *t = wcdtab[lun];
-
-	if (fmt == S_IFBLK) {
-		/* If we were the last open of the entire device, release it. */
-		if (! t->refcnt)
-			wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
-				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-		t->flags &= ~(F_BOPEN|F_LOCKED);
-	} else {
-		/* If we were the last open of the entire device, release it. */
-		if (! (t->flags & F_BOPEN) && t->refcnt == 1)
-			wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
-				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-		t->flags &= ~F_LOCKED;
-		--t->refcnt;
-	}
-	return (0);
-}
-
-static int
-wcdread(dev_t dev, struct uio *uio, int ioflag)
-{
-	return (physio(wcdstrategy, NULL, dev, 1, minphys, uio));
-}
-
-/*
- * 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 wcdstrategy (struct buf *bp)
-{
-	int lun = dkunit(bp->b_dev);
-	struct wcd *t = wcdtab[lun];
-	int x;
-
-	/* Can't ever write to a CD. */
-	if (! (bp->b_flags & B_READ)) {
-		bp->b_error = EROFS;
-		bp->b_flags |= B_ERROR;
-		biodone (bp);
-		return;
-	}
-
-	/* If it's a null transfer, return immediatly. */
-	if (bp->b_bcount == 0) {
-		bp->b_resid = 0;
-		biodone (bp);
-		return;
-	}
-
-	/* Process transfer request. */
-	bp->b_pblkno = bp->b_blkno;
-	bp->b_resid = bp->b_bcount;
-	x = splbio();
-
-	/* Place it in the queue of disk activities for this disk. */
-	bufqdisksort (&t->buf_queue, bp);
-
-	/* Tell the device to get going on the transfer if it's
-	 * not doing anything, otherwise just wait for completion. */
-	wcd_start (t);
-	splx(x);
-}
-
-/*
- * Look to see if there is a buf waiting for the device
- * and that the device is not already busy. If both are true,
- * It dequeues the buf and creates an ATAPI command to perform the
- * transfer in the buf.
- * The bufs are queued by the strategy routine (wcdstrategy).
- * Must be called at the correct (splbio) level.
- */
-static void wcd_start (struct wcd *t)
-{
-	struct buf *bp = bufq_first(&t->buf_queue);
-	u_long blkno, nblk;
-
-	/* See if there is a buf to do and we are not already doing one. */
-	if (! bp)
-		return;
-
-	/* Unqueue the request. */
-	bufq_remove(&t->buf_queue, bp);
-
-	/* Should reject all queued entries if media have changed. */
-	if (t->flags & F_MEDIA_CHANGED) {
-		bp->b_error = EIO;
-		bp->b_flags |= B_ERROR;
-		biodone (bp);
-		return;
-	}
-
-	/* Tell devstat we are starting on the transaction */
-	devstat_start_transaction(&t->device_stats);
-
-	wcd_select_slot(t);
-
-	/* We have a buf, now we should make a command
-	 * First, translate the block to absolute and put it in terms of the
-	 * logical blocksize of the device.
-	 * What if something asks for 512 bytes not on a 2k boundary? */
-	blkno = bp->b_blkno / (SECSIZE / 512);
-	nblk = (bp->b_bcount + (SECSIZE - 1)) / SECSIZE;
-
-	atapi_request_callback (t->ata, t->unit, ATAPI_READ_BIG, 0,
-		blkno>>24, blkno>>16, blkno>>8, blkno, 0, nblk>>8, nblk, 0, 0,
-		0, 0, 0, 0, 0, (u_char*) bp->b_data, bp->b_bcount,
-		wcd_done, t, bp);
-}
-
-static void wcd_done (struct wcd *t, struct buf *bp, int resid,
-	struct atapires result)
-{
-	if (result.code) {
-		wcd_error (t, result);
-		bp->b_error = EIO;
-		bp->b_flags |= B_ERROR;
-	} else
-		bp->b_resid = resid;
-
-	/* Tell devstat we have finished with the transaction */
-	devstat_end_transaction(&t->device_stats,
-				bp->b_bcount - bp->b_resid,
-				DEVSTAT_TAG_NONE,
-				(bp->b_flags & B_READ) ? DEVSTAT_READ : DEVSTAT_WRITE);
-	biodone (bp);
-	wcd_start (t);
-}
-
-static void wcd_error (struct wcd *t, struct atapires result)
-{
-	if (result.code != RES_ERR)
-		return;
-	switch (result.error & AER_SKEY) {
-	case AER_SK_NOT_READY:
-		if (result.error & ~AER_SKEY) {
-			/* Audio disc. */
-			printf ("wcd%d: cannot read audio disc\n", t->lun);
-			t->flags &= ~F_LOCKED;
-			return;
-		}
-		/* Tray open. */
-		if (! (t->flags & F_MEDIA_CHANGED))
-			printf ("wcd%d: tray open\n", t->lun);
-		t->flags |= F_MEDIA_CHANGED;
-		return;
-
-	case AER_SK_UNIT_ATTENTION:
-		/* Media changed. */
-		if (! (t->flags & F_MEDIA_CHANGED))
-			printf ("wcd%d: media changed\n", t->lun);
-		t->flags |= F_MEDIA_CHANGED;
-		return;
-
-	case AER_SK_ILLEGAL_REQUEST:
-		/* Unknown command or invalid command arguments. */
-		if (t->flags & F_DEBUG)
-			printf ("wcd%d: invalid command\n", t->lun);
-		return;
-	}
-	printf ("wcd%d: i/o error, status=%b, error=%b\n", t->lun,
-		result.status, ARS_BITS, result.error, AER_BITS);
-}
-
-static int wcd_request_wait (struct wcd *t, u_char cmd, u_char a1, u_char a2,
-	u_char a3, u_char a4, u_char a5, u_char a6, u_char a7, u_char a8,
-	u_char a9, char *addr, int count)
-{
-	struct atapires result;
-
-	result = atapi_request_wait (t->ata, t->unit, cmd,
-		a1, a2, a3, a4, a5, a6, a7, a8, a9, 0, 0, 0, 0, 0, 0,
-		addr, count);
-	if (result.code) {
-		wcd_error (t, result);
-		return (EIO);
-	}
-	return (0);
-}
-
-static __inline void lba2msf (int lba, u_char *m, u_char *s, u_char *f)
-{
-	lba += 150;             /* offset of first logical frame */
-	lba &= 0xffffff;        /* negative lbas use only 24 bits */
-	*m = lba / (60 * 75);
-	lba %= (60 * 75);
-	*s = lba / 75;
-	*f = lba % 75;
-}
-
-/*
- * Perform special action on behalf of the user.
- * Knows about the internals of this device
- */
-int wcdioctl (dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
-{
-	int lun = dkunit(dev);
-	struct wcd *t = wcdtab[lun];
-	int error = 0;
-
-	if (t->flags & F_MEDIA_CHANGED)
-		switch (cmd) {
-		case CDIOCSETDEBUG:
-		case CDIOCCLRDEBUG:
-		case CDIOCRESET:
-			/* These ops are media change transparent. */
-			break;
-		default:
-			/* Read table of contents. */
-			wcd_read_toc (t);
-
-			/* Lock the media. */
-			wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
-				0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
-			t->flags |= F_LOCKED;
-			break;
-		}
-	switch (cmd) {
-	default:
-		return (ENOTTY);
-
-	case CDIOCSETDEBUG:
-		if (p->p_cred->pc_ucred->cr_uid)
-			return (EPERM);
-		t->flags |= F_DEBUG;
-		atapi_debug (t->ata, 1);
-		return 0;
-
-	case CDIOCCLRDEBUG:
-		if (p->p_cred->pc_ucred->cr_uid)
-			return (EPERM);
-		t->flags &= ~F_DEBUG;
-		atapi_debug (t->ata, 0);
-		return 0;
-
-	case CDIOCRESUME:
-		return wcd_request_wait (t, ATAPI_PAUSE,
-			0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0);
-
-	case CDIOCPAUSE:
-		return wcd_request_wait (t, ATAPI_PAUSE,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-
-	case CDIOCSTART:
-		return wcd_request_wait (t, ATAPI_START_STOP,
-			1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
-
-	case CDIOCSTOP:
-		return wcd_request_wait (t, ATAPI_START_STOP,
-			1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-
-	case CDIOCALLOW:
-		wcd_select_slot(t);
-		t->flags &= ~F_LOCKED;
-		return wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-
-	case CDIOCPREVENT:
-		wcd_select_slot(t);
-		t->flags |= F_LOCKED;
-		return wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
-			0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
-
-	case CDIOCRESET:
-		if (p->p_cred->pc_ucred->cr_uid)
-			return (EPERM);
-		return wcd_request_wait (t, ATAPI_TEST_UNIT_READY,
-			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-
-	case CDIOCEJECT:
-		/* Don't allow eject if the device is opened
-		 * by somebody (not us) in block mode. */
-		if ((t->flags & F_BOPEN) && t->refcnt)
-			return (EBUSY);
-		return wcd_eject (t, 0);
-
-	case CDIOCCLOSE:
-		if ((t->flags & F_BOPEN) && t->refcnt)
-			return (0);
-		return wcd_eject (t, 1);
-
-	case CDIOREADTOCHEADER:
-		if (! t->toc.hdr.ending_track)
-			return (EIO);
-		bcopy (&t->toc.hdr, addr, sizeof t->toc.hdr);
-		break;
-
-	case CDIOREADTOCENTRYS: {
-		struct ioc_read_toc_entry *te =
-			(struct ioc_read_toc_entry*) addr;
-		struct toc *toc = &t->toc;
-		struct toc buf;
-		u_long len;
-		u_char starting_track = te->starting_track;
-
-		if (! t->toc.hdr.ending_track)
-			return (EIO);
-
-		if (   te->data_len < sizeof(toc->tab[0])
-		    || (te->data_len % sizeof(toc->tab[0])) != 0
-		    || te->address_format != CD_MSF_FORMAT
-		    && te->address_format != CD_LBA_FORMAT
-		   )
-			return EINVAL;
-
-		if (starting_track == 0)
-			starting_track = toc->hdr.starting_track;
-		else if (starting_track == 170) /* Handle leadout request */
-			starting_track = toc->hdr.ending_track + 1;
-		else if (starting_track < toc->hdr.starting_track ||
-			 starting_track > toc->hdr.ending_track + 1)
-                        return (EINVAL);
-
-		len = ((toc->hdr.ending_track + 1 - starting_track) + 1) *
-			sizeof(toc->tab[0]);
-		if (te->data_len < len)
-			len = te->data_len;
-		if (len > sizeof(toc->tab))
-			return EINVAL;
-
-		/* Convert to MSF format, if needed. */
-		if (te->address_format == CD_MSF_FORMAT) {
-			struct cd_toc_entry *e;
-
-			buf = t->toc;
-			toc = &buf;
-			e = toc->tab + (toc->hdr.ending_track + 1 -
-					toc->hdr.starting_track) + 1;
-			while (--e >= toc->tab)
-				lba2msf (ntohl(e->addr.lba), &e->addr.msf.minute,
-				    &e->addr.msf.second, &e->addr.msf.frame);
-		}
-		return copyout (toc->tab + starting_track -
-				toc->hdr.starting_track, te->data, len);
-	}
-	case CDIOREADTOCENTRY: {
-		struct ioc_read_toc_single_entry *te =
-			(struct ioc_read_toc_single_entry*) addr;
-		struct toc *toc = &t->toc;
-		struct toc buf;
-		u_char track = te->track;
-
-		if (! t->toc.hdr.ending_track)
-			return (EIO);
-
-		if (te->address_format != CD_MSF_FORMAT
-		    && te->address_format != CD_LBA_FORMAT)
-			return EINVAL;
-
-		if (track == 0)
-			track = toc->hdr.starting_track;
-		else if (track == 170) /* Handle leadout request */
-			track = toc->hdr.ending_track + 1;
-		else if (track < toc->hdr.starting_track ||
-			 track > toc->hdr.ending_track + 1)
-                        return (EINVAL);
-
-		/* Convert to MSF format, if needed. */
-		if (te->address_format == CD_MSF_FORMAT) {
-			struct cd_toc_entry *e;
-
-			buf = t->toc;
-			toc = &buf;
-			e = toc->tab + (track - toc->hdr.starting_track);
-			lba2msf (ntohl(e->addr.lba), &e->addr.msf.minute,
-				 &e->addr.msf.second, &e->addr.msf.frame);
-		}
-		bcopy(toc->tab + track - toc->hdr.starting_track,
-		      &te->entry, sizeof(struct cd_toc_entry));
-	}
-	case CDIOCREADSUBCHANNEL: {
-		struct ioc_read_subchannel *args =
-			(struct ioc_read_subchannel*) addr;
-		struct cd_sub_channel_info data;
-		u_long len = args->data_len;
-		int abslba, rellba;
-
-		if (len > sizeof(data) ||
-		    len < sizeof(struct cd_sub_channel_header))
-			return (EINVAL);
-
-		if (wcd_request_wait (t, ATAPI_READ_SUBCHANNEL, 0, 0x40, 1, 0,
-		    0, 0, sizeof (t->subchan) >> 8, sizeof (t->subchan),
-		    0, (char*)&t->subchan, sizeof (t->subchan)) != 0)
-			return (EIO);
-		if (t->flags & F_DEBUG)
-			wcd_dump (t->lun, "subchan", &t->subchan, sizeof t->subchan);
-
-		abslba = t->subchan.abslba;
-		rellba = t->subchan.rellba;
-		if (args->address_format == CD_MSF_FORMAT) {
-			lba2msf (ntohl(abslba),
-				&data.what.position.absaddr.msf.minute,
-				&data.what.position.absaddr.msf.second,
-				&data.what.position.absaddr.msf.frame);
-			lba2msf (ntohl(rellba),
-				&data.what.position.reladdr.msf.minute,
-				&data.what.position.reladdr.msf.second,
-				&data.what.position.reladdr.msf.frame);
-		} else {
-			data.what.position.absaddr.lba = abslba;
-			data.what.position.reladdr.lba = rellba;
-		}
-		data.header.audio_status = t->subchan.audio_status;
-		data.what.position.control = t->subchan.control & 0xf;
-		data.what.position.addr_type = t->subchan.control >> 4;
-		data.what.position.track_number = t->subchan.track;
-		data.what.position.index_number = t->subchan.indx;
-
-		return copyout (&data, args->data, len);
-	}
-	case CDIOCPLAYMSF: {
-		struct ioc_play_msf *args = (struct ioc_play_msf*) addr;
-
-		return wcd_request_wait (t, ATAPI_PLAY_MSF, 0, 0,
-			args->start_m, args->start_s, args->start_f,
-			args->end_m, args->end_s, args->end_f, 0, 0, 0);
-	}
-	case CDIOCPLAYBLOCKS: {
-		struct ioc_play_blocks *args = (struct ioc_play_blocks*) addr;
-
-		return wcd_request_wait (t, ATAPI_PLAY_BIG, 0,
-			args->blk >> 24 & 0xff, args->blk >> 16 & 0xff,
-			args->blk >> 8 & 0xff, args->blk & 0xff,
-			args->len >> 24 & 0xff, args->len >> 16 & 0xff,
-			args->len >> 8 & 0xff, args->len & 0xff, 0, 0);
-	}
-	case CDIOCPLAYTRACKS: {
-		struct ioc_play_track *args = (struct ioc_play_track*) addr;
-		u_long start, len;
-		int t1, t2;
-
-		if (! t->toc.hdr.ending_track)
-			return (EIO);
-
-		/* Ignore index fields,
-		 * play from start_track to end_track inclusive. */
-		if (args->end_track < t->toc.hdr.ending_track+1)
-			++args->end_track;
-		if (args->end_track > t->toc.hdr.ending_track+1)
-			args->end_track = t->toc.hdr.ending_track+1;
-		t1 = args->start_track - t->toc.hdr.starting_track;
-		t2 = args->end_track - t->toc.hdr.starting_track;
-		if (t1 < 0 || t2 < 0)
-			return (EINVAL);
-		start = ntohl(t->toc.tab[t1].addr.lba);
-		len = ntohl(t->toc.tab[t2].addr.lba) - start;
-
-		return wcd_request_wait (t, ATAPI_PLAY_BIG, 0,
-			start >> 24 & 0xff, start >> 16 & 0xff,
-			start >> 8 & 0xff, start & 0xff,
-			len >> 24 & 0xff, len >> 16 & 0xff,
-			len >> 8 & 0xff, len & 0xff, 0, 0);
-	}
-	case CDIOCGETVOL: {
-		struct ioc_vol *arg = (struct ioc_vol*) addr;
-
-		error = wcd_request_wait (t, ATAPI_MODE_SENSE, 0, AUDIO_PAGE,
-			0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au), 0,
-			(char*) &t->au, sizeof (t->au));
-		if (error)
-			return (error);
-		if (t->flags & F_DEBUG)
-			wcd_dump (t->lun, "au", &t->au, sizeof t->au);
-		if (t->au.page_code != AUDIO_PAGE)
-			return (EIO);
-		arg->vol[0] = t->au.port[0].volume;
-		arg->vol[1] = t->au.port[1].volume;
-		arg->vol[2] = t->au.port[2].volume;
-		arg->vol[3] = t->au.port[3].volume;
-		break;
-	}
-	case CDIOCSETVOL: {
-		struct ioc_vol *arg = (struct ioc_vol*) addr;
-
-		error = wcd_request_wait (t, ATAPI_MODE_SENSE, 0, AUDIO_PAGE,
-			0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au), 0,
-			(char*) &t->au, sizeof (t->au));
-		if (error)
-			return (error);
-		if (t->flags & F_DEBUG)
-			wcd_dump (t->lun, "au", &t->au, sizeof t->au);
-		if (t->au.page_code != AUDIO_PAGE)
-			return (EIO);
-
-		error = wcd_request_wait (t, ATAPI_MODE_SENSE, 0,
-			AUDIO_PAGE_MASK, 0, 0, 0, 0, sizeof (t->aumask) >> 8,
-			sizeof (t->aumask), 0, (char*) &t->aumask,
-			sizeof (t->aumask));
-		if (error)
-			return (error);
-		if (t->flags & F_DEBUG)
-			wcd_dump (t->lun, "mask", &t->aumask, sizeof t->aumask);
-
-		/* Sony-55E requires the data length field to be zeroed. */
-		t->au.data_length = 0;
-
-		t->au.port[0].channels = CHANNEL_0;
-		t->au.port[1].channels = CHANNEL_1;
-		t->au.port[0].volume = arg->vol[0] & t->aumask.port[0].volume;
-		t->au.port[1].volume = arg->vol[1] & t->aumask.port[1].volume;
-		t->au.port[2].volume = arg->vol[2] & t->aumask.port[2].volume;
-		t->au.port[3].volume = arg->vol[3] & t->aumask.port[3].volume;
-		return wcd_request_wait (t, ATAPI_MODE_SELECT, 0x10,
-			0, 0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au),
-			0, (char*) &t->au, - sizeof (t->au));
-	}
-	case CDIOCSETPATCH: {
-		struct ioc_patch *arg = (struct ioc_patch*) addr;
-
-		return wcd_setchan (t, arg->patch[0], arg->patch[1],
-			arg->patch[2], arg->patch[3]);
-	}
-	case CDIOCSETMONO:
-		return wcd_setchan (t, CHANNEL_0 | CHANNEL_1,
-			CHANNEL_0 | CHANNEL_1, 0, 0);
-
-	case CDIOCSETSTERIO:
-		return wcd_setchan (t, CHANNEL_0, CHANNEL_1, 0, 0);
-
-	case CDIOCSETMUTE:
-		return wcd_setchan (t, 0, 0, 0, 0);
-
-	case CDIOCSETLEFT:
-		return wcd_setchan (t, CHANNEL_0, CHANNEL_0, 0, 0);
-
-	case CDIOCSETRIGHT:
-		return wcd_setchan (t, CHANNEL_1, CHANNEL_1, 0, 0);
-	}
-	return (error);
-}
-
-/*
- * Read the entire TOC for the disc into our internal buffer.
- */
-static int wcd_read_toc (struct wcd *t)
-{
-	int ntracks, len;
-	struct atapires result;
-
-	bzero (&t->toc, sizeof (t->toc));
-	bzero (&t->info, sizeof (t->info));
-
-	wcd_select_slot(t);
-
-	/* Check for the media.
-	 * Do it twice to avoid the stale media changed state. */
-	result = atapi_request_wait (t->ata, t->unit, ATAPI_TEST_UNIT_READY,
-		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-
-	if (result.code == RES_ERR &&
-	    (result.error & AER_SKEY) == AER_SK_UNIT_ATTENTION) {
-		t->flags |= F_MEDIA_CHANGED;
-		result = atapi_request_wait (t->ata, t->unit,
-			ATAPI_TEST_UNIT_READY, 0, 0, 0, 0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0, 0, 0, 0, 0);
-	}
-	if (result.code) {
-		wcd_error (t, result);
-		return (EIO);
-	}
-	t->flags &= ~F_MEDIA_CHANGED;
-
-	/* First read just the header, so we know how long the TOC is. */
-	len = sizeof(struct ioc_toc_header) + sizeof(struct cd_toc_entry);
-	if (wcd_request_wait (t, ATAPI_READ_TOC, 0, 0, 0, 0, 0, 0,
-	    len >> 8, len & 0xff, 0, (char*)&t->toc, len) != 0) {
-err:            bzero (&t->toc, sizeof (t->toc));
-		return (0);
-	}
-
-	ntracks = t->toc.hdr.ending_track - t->toc.hdr.starting_track + 1;
-	if (ntracks <= 0 || ntracks > MAXTRK)
-		goto err;
-
-	/* Now read the whole schmeer. */
-	len = sizeof(struct ioc_toc_header) +
-		ntracks * sizeof(struct cd_toc_entry);
-	if (wcd_request_wait (t, ATAPI_READ_TOC, 0, 0, 0, 0, 0, 0,
-	    len >> 8, len & 0xff, 0, (char*)&t->toc, len) & 0xff)
-		goto err;
-
-	NTOHS(t->toc.hdr.len);
-
-	/* Read disc capacity. */
-	if (wcd_request_wait (t, ATAPI_READ_CAPACITY, 0, 0, 0, 0, 0, 0,
-	    0, sizeof(t->info), 0, (char*)&t->info, sizeof(t->info)) != 0)
-		bzero (&t->info, sizeof (t->info));
-
-	/* make fake leadout entry */
-	t->toc.tab[ntracks].control = t->toc.tab[ntracks-1].control;
-	t->toc.tab[ntracks].addr_type = t->toc.tab[ntracks-1].addr_type;
-	t->toc.tab[ntracks].track = 170; /* magic */
-	t->toc.tab[ntracks].addr.lba = t->info.volsize;
-
-	NTOHL(t->info.volsize);
-	NTOHL(t->info.blksize);
-
-	/* Print the disc description string on every disc change.
-	 * It would help to track the history of disc changes. */
-	if (t->info.volsize && t->toc.hdr.ending_track &&
-	    (t->flags & F_MEDIA_CHANGED) && (t->flags & F_DEBUG)) {
-		printf ("wcd%d: ", t->lun);
-		if (t->toc.tab[0].control & 4)
-			printf ("%ldMB ", t->info.volsize / 512);
-		else
-			printf ("%ld:%ld audio ", t->info.volsize/75/60,
-				t->info.volsize/75%60);
-		printf ("(%ld sectors), %d tracks\n", t->info.volsize,
-			t->toc.hdr.ending_track - t->toc.hdr.starting_track + 1);
-	}
-	return (0);
-}
-
-/*
- * Set up the audio channel masks.
- */
-static int wcd_setchan (struct wcd *t,
-	u_char c0, u_char c1, u_char c2, u_char c3)
-{
-	int error;
-
-	error = wcd_request_wait (t, ATAPI_MODE_SENSE, 0, AUDIO_PAGE,
-		0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au), 0,
-		(char*) &t->au, sizeof (t->au));
-	if (error)
-		return (error);
-	if (t->flags & F_DEBUG)
-		wcd_dump (t->lun, "au", &t->au, sizeof t->au);
-	if (t->au.page_code != AUDIO_PAGE)
-		return (EIO);
-
-	/* Sony-55E requires the data length field to be zeroed. */
-	t->au.data_length = 0;
-
-	t->au.port[0].channels = c0;
-	t->au.port[1].channels = c1;
-	t->au.port[2].channels = c2;
-	t->au.port[3].channels = c3;
-	return wcd_request_wait (t, ATAPI_MODE_SELECT, 0x10,
-		0, 0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au),
-		0, (char*) &t->au, - sizeof (t->au));
-}
-
-static int wcd_eject (struct wcd *t, int closeit)
-{
-	struct atapires result;
-	
-	wcd_select_slot(t);
-
-	/* Try to stop the disc. */
-	result = atapi_request_wait (t->ata, t->unit, ATAPI_START_STOP,
-		1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-
-	if (result.code == RES_ERR &&
-	    ((result.error & AER_SKEY) == AER_SK_NOT_READY ||
-	    (result.error & AER_SKEY) == AER_SK_UNIT_ATTENTION)) {
-		int err;
-
-		if (!closeit)
-			return (0);
-		/*
-		 * The disc was unloaded.
-		 * Load it (close tray).
-		 * Read the table of contents.
-		 */
-		err = wcd_request_wait (t, ATAPI_START_STOP,
-			0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0);
-		if (err)
-			return (err);
-
-		/* Read table of contents. */
-		wcd_read_toc (t);
-
-		/* Lock the media. */
-		wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
-			0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
-		t->flags |= F_LOCKED;
-		return (0);
-	}
-
-	if (result.code) {
-		wcd_error (t, result);
-		return (EIO);
-	}
-
-	if (closeit)
-		return (0);
-
-	/* Give it some time to stop spinning. */
-	tsleep ((caddr_t)&lbolt, PRIBIO, "wcdej1", 0);
-	tsleep ((caddr_t)&lbolt, PRIBIO, "wcdej2", 0);
-
-	/* Unlock. */
-	wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
-		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-	t->flags &= ~F_LOCKED;
-
-	/* Eject. */
-	t->flags |= F_MEDIA_CHANGED;
-	return wcd_request_wait (t, ATAPI_START_STOP,
-		0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0);
-}
-
-static void
-wcd_select_slot(struct wcd *cdp)
-{
-	if (cdp->slot < 0 || cdp->changer_info->current_slot == cdp->slot)
-		return;
-
-	/* Unlock (might not be needed but its cheaper than asking) */
-       	wcd_request_wait (cdp, ATAPI_PREVENT_ALLOW,
-		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-
-	/* Unload the current media from player */
-       	wcd_request_wait (cdp, ATAPI_LOAD_UNLOAD,
-		0, 0, 0, 2, 0, 0, 0, cdp->changer_info->current_slot, 0, 0, 0);
-
-	/* load the wanted slot */
-       	wcd_request_wait (cdp, ATAPI_LOAD_UNLOAD,
-		0, 0, 0, 3, 0, 0, 0, cdp->slot, 0, 0, 0);
-
-	cdp->changer_info->current_slot = cdp->slot;
-
-	/* Lock the media if needed */
-	if (cdp->flags & F_LOCKED) {
-		wcd_request_wait (cdp, ATAPI_PREVENT_ALLOW,
-			0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
-	}
-}
-
-#ifdef WCD_MODULE
-/*
- * Loadable ATAPI CD-ROM driver stubs.
- */
-#include <sys/exec.h>
-#include <sys/sysent.h>
-#include <sys/lkm.h>
-
-/*
- * Construct lkm_dev structures (see lkm.h).
- * Our bdevsw/cdevsw slot numbers are 19/69.
- */
-
-
-MOD_DEV(wcd, LM_DT_BLOCK, BDEV_MAJOR, &wcd_cdevsw);
-MOD_DEV(rwcd, LM_DT_CHAR, CDEV_MAJOR, &wcd_cdevsw);
-
-/*
- * Function called when loading the driver.
- */
-int wcd_load (struct lkm_table *lkmtp, int cmd)
-{
-	struct atapi *ata;
-	int n, u;
-
-	if (! atapi_start)
-		/* No ATAPI driver available. */
-		return EPROTONOSUPPORT;
-	n = 0;
-	for (ata=atapi_tab; ata<atapi_tab+2; ++ata)
-		if (ata->port)
-			for (u=0; u<2; ++u)
-				/* Probing controller ata->ctrlr, unit u. */
-				if (ata->params[u] && ! ata->attached[u] &&
-				    wcdattach (ata, u, ata->params[u],
-				    ata->debug) >= 0)
-				{
-					/* Drive found. */
-					ata->attached[u] = 1;
-					++n;
-				}
-	if (! n)
-		/* No IDE CD-ROMs found. */
-		return ENXIO;
-	return 0;
-}
-
-/*
- * Function called when unloading the driver.
- */
-int wcd_unload (struct lkm_table *lkmtp, int cmd)
-{
-	struct wcd **t;
-
-	for (t=wcdtab; t<wcdtab+wcdnlun; ++t)
-		if (((*t)->flags & F_BOPEN) || (*t)->refcnt)
-			/* The device is opened, cannot unload the driver. */
-			return EBUSY;
-	for (t=wcdtab; t<wcdtab+wcdnlun; ++t) {
-		(*t)->ata->attached[(*t)->unit] = 0;
-		free (*t, M_TEMP);
-	}
-	wcdnlun = 0;
-	bzero (wcdtab, sizeof(wcdtab));
-	return 0;
-}
-
-/*
- * Dispatcher function for the module (load/unload/stat).
- */
-int wcd_mod (struct lkm_table *lkmtp, int cmd, int ver)
-{
-	int err = 0;
-
-	if (ver != LKM_VERSION)
-		return EINVAL;
-
-	if (cmd == LKM_E_LOAD)
-		err = wcd_load (lkmtp, cmd);
-	else if (cmd == LKM_E_UNLOAD)
-		err = wcd_unload (lkmtp, cmd);
-	if (err)
-		return err;
-
-	/* XXX Poking around in the LKM internals like this is bad.
-	 */
-	/* Register the cdevsw entry. */
-	lkmtp->private.lkm_dev = & MOD_PRIVATE(rwcd);
-	err = lkmdispatch (lkmtp, cmd);
-	if (err)
-		return err;
-
-	/* Register the bdevsw entry. */
-	lkmtp->private.lkm_dev = & MOD_PRIVATE(wcd);
-	return lkmdispatch (lkmtp, cmd);
-}
-#endif /* WCD_MODULE */
-
-static wcd_devsw_installed = 0;
-
-static void 	wcd_drvinit(void *unused)
-{
-
-	if( ! wcd_devsw_installed ) {
-		cdevsw_add_generic(BDEV_MAJOR, CDEV_MAJOR, &wcd_cdevsw);
-		wcd_devsw_installed = 1;
-    	}
-}
-
-SYSINIT(wcddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,wcd_drvinit,NULL)
-
-
-#endif /* NWCD && NWDC && ATAPI */