Remove legacy CDROM drivers

They are all broken beyond repair. Given that nobody has complained
about them (most haven't worked in 2.6 AT ALL), remove them from the
tree.

A new mitsumi driver that actually works is in progress, it'll get
added when completed.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 0 insertions, 2105 deletions

diff --git a/drivers/cdrom/optcd.c b/drivers/cdrom/optcd.c
deleted file mode 100644
index efd619c0fe1..00000000000
--- a/drivers/cdrom/optcd.c
+++ /dev/null
@@ -1,2105 +0,0 @@
-/*	linux/drivers/cdrom/optcd.c - Optics Storage 8000 AT CDROM driver
-	$Id: optcd.c,v 1.11 1997/01/26 07:13:00 davem Exp $
-
-	Copyright (C) 1995 Leo Spiekman (spiekman@dutette.et.tudelft.nl)
-
-
-	Based on Aztech CD268 CDROM driver by Werner Zimmermann and preworks
-	by Eberhard Moenkeberg (emoenke@gwdg.de). 
-
-	This program is free software; you can redistribute it and/or modify
-	it under the terms of the GNU General Public License as published by
-	the Free Software Foundation; either version 2, or (at your option)
-	any later version.
-
-	This program is distributed in the hope that it will be useful,
-	but WITHOUT ANY WARRANTY; without even the implied warranty of
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-	GNU General Public License for more details.
-
-	You should have received a copy of the GNU General Public License
-	along with this program; if not, write to the Free Software
-	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/*	Revision history
-
-
-	14-5-95		v0.0	Plays sound tracks. No reading of data CDs yet.
-				Detection of disk change doesn't work.
-	21-5-95		v0.1	First ALPHA version. CD can be mounted. The
-				device major nr is borrowed from the Aztech
-				driver. Speed is around 240 kb/s, as measured
-				with "time dd if=/dev/cdrom of=/dev/null \
-				bs=2048 count=4096".
-	24-6-95		v0.2	Reworked the #defines for the command codes
-				and the like, as well as the structure of
-				the hardware communication protocol, to
-				reflect the "official" documentation, kindly
-				supplied by C.K. Tan, Optics Storage Pte. Ltd.
-				Also tidied up the state machine somewhat.
-	28-6-95		v0.3	Removed the ISP-16 interface code, as this
-				should go into its own driver. The driver now
-				has its own major nr.
-				Disk change detection now seems to work, too.
-				This version became part of the standard
-				kernel as of version 1.3.7
-	24-9-95		v0.4	Re-inserted ISP-16 interface code which I
-				copied from sjcd.c, with a few changes.
-				Updated README.optcd. Submitted for
-				inclusion in 1.3.21
-	29-9-95		v0.4a	Fixed bug that prevented compilation as module
-	25-10-95	v0.5	Started multisession code. Implementation
-				copied from Werner Zimmermann, who copied it
-				from Heiko Schlittermann's mcdx.
-	17-1-96		v0.6	Multisession works; some cleanup too.
-	18-4-96		v0.7	Increased some timing constants;
-				thanks to Luke McFarlane. Also tidied up some
-				printk behaviour. ISP16 initialization
-				is now handled by a separate driver.
-				
-	09-11-99 	  	Make kernel-parameter implementation work with 2.3.x 
-	                 	Removed init_module & cleanup_module in favor of 
-			 	module_init & module_exit.
-			 	Torben Mathiasen <tmm@image.dk>
-*/
-
-/* Includes */
-
-
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-#include <linux/blkdev.h>
-
-#include <linux/cdrom.h>
-#include "optcd.h"
-
-#include <asm/uaccess.h>
-
-#define MAJOR_NR OPTICS_CDROM_MAJOR
-#define QUEUE (opt_queue)
-#define CURRENT elv_next_request(opt_queue)
-
-
-/* Debug support */
-
-
-/* Don't forget to add new debug flags here. */
-#if DEBUG_DRIVE_IF | DEBUG_VFS | DEBUG_CONV | DEBUG_TOC | \
-    DEBUG_BUFFERS | DEBUG_REQUEST | DEBUG_STATE | DEBUG_MULTIS
-#define DEBUG(x) debug x
-static void debug(int debug_this, const char* fmt, ...)
-{
-	char s[1024];
-	va_list args;
-
-	if (!debug_this)
-		return;
-
-	va_start(args, fmt);
-	vsnprintf(s, sizeof(s), fmt, args);
-	printk(KERN_DEBUG "optcd: %s\n", s);
-	va_end(args);
-}
-#else
-#define DEBUG(x)
-#endif
-
-
-/* Drive hardware/firmware characteristics
-   Identifiers in accordance with Optics Storage documentation */
-
-
-#define optcd_port optcd			/* Needed for the modutils. */
-static short optcd_port = OPTCD_PORTBASE;	/* I/O base of drive. */
-module_param(optcd_port, short, 0);
-/* Drive registers, read */
-#define DATA_PORT	optcd_port	/* Read data/status */
-#define STATUS_PORT	optcd_port+1	/* Indicate data/status availability */
-
-/* Drive registers, write */
-#define COMIN_PORT	optcd_port	/* For passing command/parameter */
-#define RESET_PORT	optcd_port+1	/* Write anything and wait 0.5 sec */
-#define HCON_PORT	optcd_port+2	/* Host Xfer Configuration */
-
-
-/* Command completion/status read from DATA register */
-#define ST_DRVERR		0x80
-#define ST_DOOR_OPEN		0x40
-#define ST_MIXEDMODE_DISK	0x20
-#define ST_MODE_BITS		0x1c
-#define ST_M_STOP		0x00
-#define ST_M_READ		0x04
-#define ST_M_AUDIO		0x04
-#define ST_M_PAUSE		0x08
-#define ST_M_INITIAL		0x0c
-#define ST_M_ERROR		0x10
-#define ST_M_OTHERS		0x14
-#define	ST_MODE2TRACK		0x02
-#define	ST_DSK_CHG		0x01
-#define ST_L_LOCK		0x01
-#define ST_CMD_OK		0x00
-#define ST_OP_OK		0x01
-#define ST_PA_OK		0x02
-#define ST_OP_ERROR		0x05
-#define ST_PA_ERROR		0x06
-
-
-/* Error codes (appear as command completion code from DATA register) */
-/* Player related errors */
-#define ERR_ILLCMD	0x11	/* Illegal command to player module */
-#define ERR_ILLPARM	0x12	/* Illegal parameter to player module */
-#define ERR_SLEDGE	0x13
-#define ERR_FOCUS	0x14
-#define ERR_MOTOR	0x15
-#define ERR_RADIAL	0x16
-#define ERR_PLL		0x17	/* PLL lock error */
-#define ERR_SUB_TIM	0x18	/* Subcode timeout error */
-#define ERR_SUB_NF	0x19	/* Subcode not found error */
-#define ERR_TRAY	0x1a
-#define ERR_TOC		0x1b	/* Table of Contents read error */
-#define ERR_JUMP	0x1c
-/* Data errors */
-#define ERR_MODE	0x21
-#define ERR_FORM	0x22
-#define ERR_HEADADDR	0x23	/* Header Address not found */
-#define ERR_CRC		0x24
-#define ERR_ECC		0x25	/* Uncorrectable ECC error */
-#define ERR_CRC_UNC	0x26	/* CRC error and uncorrectable error */
-#define ERR_ILLBSYNC	0x27	/* Illegal block sync error */
-#define ERR_VDST	0x28	/* VDST not found */
-/* Timeout errors */
-#define ERR_READ_TIM	0x31	/* Read timeout error */
-#define ERR_DEC_STP	0x32	/* Decoder stopped */
-#define ERR_DEC_TIM	0x33	/* Decoder interrupt timeout error */
-/* Function abort codes */
-#define ERR_KEY		0x41	/* Key -Detected abort */
-#define ERR_READ_FINISH	0x42	/* Read Finish */
-/* Second Byte diagnostic codes */
-#define ERR_NOBSYNC	0x01	/* No block sync */
-#define ERR_SHORTB	0x02	/* Short block */
-#define ERR_LONGB	0x03	/* Long block */
-#define ERR_SHORTDSP	0x04	/* Short DSP word */
-#define ERR_LONGDSP	0x05	/* Long DSP word */
-
-
-/* Status availability flags read from STATUS register */
-#define FL_EJECT	0x20
-#define FL_WAIT		0x10	/* active low */
-#define FL_EOP		0x08	/* active low */
-#define FL_STEN		0x04	/* Status available when low */
-#define FL_DTEN		0x02	/* Data available when low */
-#define FL_DRQ		0x01	/* active low */
-#define FL_RESET	0xde	/* These bits are high after a reset */
-#define FL_STDT		(FL_STEN|FL_DTEN)
-
-
-/* Transfer mode, written to HCON register */
-#define HCON_DTS	0x08
-#define HCON_SDRQB	0x04
-#define HCON_LOHI	0x02
-#define HCON_DMA16	0x01
-
-
-/* Drive command set, written to COMIN register */
-/* Quick response commands */
-#define COMDRVST	0x20	/* Drive Status Read */
-#define COMERRST	0x21	/* Error Status Read */
-#define COMIOCTLISTAT	0x22	/* Status Read; reset disk changed bit */
-#define COMINITSINGLE	0x28	/* Initialize Single Speed */
-#define COMINITDOUBLE	0x29	/* Initialize Double Speed */
-#define COMUNLOCK	0x30	/* Unlock */
-#define COMLOCK		0x31	/* Lock */
-#define COMLOCKST	0x32	/* Lock/Unlock Status */
-#define COMVERSION	0x40	/* Get Firmware Revision */
-#define COMVOIDREADMODE	0x50	/* Void Data Read Mode */
-/* Read commands */
-#define COMFETCH	0x60	/* Prefetch Data */
-#define COMREAD		0x61	/* Read */
-#define COMREADRAW	0x62	/* Read Raw Data */
-#define COMREADALL	0x63	/* Read All 2646 Bytes */
-/* Player control commands */
-#define COMLEADIN	0x70	/* Seek To Lead-in */
-#define COMSEEK		0x71	/* Seek */
-#define COMPAUSEON	0x80	/* Pause On */
-#define COMPAUSEOFF	0x81	/* Pause Off */
-#define COMSTOP		0x82	/* Stop */
-#define COMOPEN		0x90	/* Open Tray Door */
-#define COMCLOSE	0x91	/* Close Tray Door */
-#define COMPLAY		0xa0	/* Audio Play */
-#define COMPLAY_TNO	0xa2	/* Audio Play By Track Number */
-#define COMSUBQ		0xb0	/* Read Sub-q Code */
-#define COMLOCATION	0xb1	/* Read Head Position */
-/* Audio control commands */
-#define COMCHCTRL	0xc0	/* Audio Channel Control */
-/* Miscellaneous (test) commands */
-#define COMDRVTEST	0xd0	/* Write Test Bytes */
-#define COMTEST		0xd1	/* Diagnostic Test */
-
-/* Low level drive interface. Only here we do actual I/O
-   Waiting for status / data available */
-
-
-/* Busy wait until FLAG goes low. Return 0 on timeout. */
-static inline int flag_low(int flag, unsigned long timeout)
-{
-	int flag_high;
-	unsigned long count = 0;
-
-	while ((flag_high = (inb(STATUS_PORT) & flag)))
-		if (++count >= timeout)
-			break;
-
-	DEBUG((DEBUG_DRIVE_IF, "flag_low 0x%x count %ld%s",
-		flag, count, flag_high ? " timeout" : ""));
-	return !flag_high;
-}
-
-
-/* Timed waiting for status or data */
-static int sleep_timeout;	/* max # of ticks to sleep */
-static DECLARE_WAIT_QUEUE_HEAD(waitq);
-static void sleep_timer(unsigned long data);
-static DEFINE_TIMER(delay_timer, sleep_timer, 0, 0);
-static DEFINE_SPINLOCK(optcd_lock);
-static struct request_queue *opt_queue;
-
-/* Timer routine: wake up when desired flag goes low,
-   or when timeout expires. */
-static void sleep_timer(unsigned long data)
-{
-	int flags = inb(STATUS_PORT) & FL_STDT;
-
-	if (flags == FL_STDT && --sleep_timeout > 0) {
-		mod_timer(&delay_timer, jiffies + HZ/100); /* multi-statement macro */
-	} else
-		wake_up(&waitq);
-}
-
-
-/* Sleep until FLAG goes low. Return 0 on timeout or wrong flag low. */
-static int sleep_flag_low(int flag, unsigned long timeout)
-{
-	int flag_high;
-
-	DEBUG((DEBUG_DRIVE_IF, "sleep_flag_low"));
-
-	sleep_timeout = timeout;
-	flag_high = inb(STATUS_PORT) & flag;
-	if (flag_high && sleep_timeout > 0) {
-		mod_timer(&delay_timer, jiffies + HZ/100);
-		sleep_on(&waitq);
-		flag_high = inb(STATUS_PORT) & flag;
-	}
-
-	DEBUG((DEBUG_DRIVE_IF, "flag 0x%x count %ld%s",
-		flag, timeout, flag_high ? " timeout" : ""));
-	return !flag_high;
-}
-
-/* Low level drive interface. Only here we do actual I/O
-   Sending commands and parameters */
-
-
-/* Errors in the command protocol */
-#define ERR_IF_CMD_TIMEOUT	0x100
-#define ERR_IF_ERR_TIMEOUT	0x101
-#define ERR_IF_RESP_TIMEOUT	0x102
-#define ERR_IF_DATA_TIMEOUT	0x103
-#define ERR_IF_NOSTAT		0x104
-
-
-/* Send command code. Return <0 indicates error */
-static int send_cmd(int cmd)
-{
-	unsigned char ack;
-
-	DEBUG((DEBUG_DRIVE_IF, "sending command 0x%02x\n", cmd));
-
-	outb(HCON_DTS, HCON_PORT);	/* Enable Suspend Data Transfer */
-	outb(cmd, COMIN_PORT);		/* Send command code */
-	if (!flag_low(FL_STEN, BUSY_TIMEOUT))	/* Wait for status */
-		return -ERR_IF_CMD_TIMEOUT;
-	ack = inb(DATA_PORT);		/* read command acknowledge */
-	outb(HCON_SDRQB, HCON_PORT);	/* Disable Suspend Data Transfer */
-	return ack==ST_OP_OK ? 0 : -ack;
-}
-
-
-/* Send command parameters. Return <0 indicates error */
-static int send_params(struct cdrom_msf *params)
-{
-	unsigned char ack;
-
-	DEBUG((DEBUG_DRIVE_IF, "sending parameters"
-		" %02x:%02x:%02x"
-		" %02x:%02x:%02x",
-		params->cdmsf_min0,
-		params->cdmsf_sec0,
-		params->cdmsf_frame0,
-		params->cdmsf_min1,
-		params->cdmsf_sec1,
-		params->cdmsf_frame1));
-
-	outb(params->cdmsf_min0, COMIN_PORT);
-	outb(params->cdmsf_sec0, COMIN_PORT);
-	outb(params->cdmsf_frame0, COMIN_PORT);
-	outb(params->cdmsf_min1, COMIN_PORT);
-	outb(params->cdmsf_sec1, COMIN_PORT);
-	outb(params->cdmsf_frame1, COMIN_PORT);
-	if (!flag_low(FL_STEN, BUSY_TIMEOUT))	/* Wait for status */
-		return -ERR_IF_CMD_TIMEOUT;
-	ack = inb(DATA_PORT);		/* read command acknowledge */
-	return ack==ST_PA_OK ? 0 : -ack;
-}
-
-
-/* Send parameters for SEEK command. Return <0 indicates error */
-static int send_seek_params(struct cdrom_msf *params)
-{
-	unsigned char ack;
-
-	DEBUG((DEBUG_DRIVE_IF, "sending seek parameters"
-		" %02x:%02x:%02x",
-		params->cdmsf_min0,
-		params->cdmsf_sec0,
-		params->cdmsf_frame0));
-
-	outb(params->cdmsf_min0, COMIN_PORT);
-	outb(params->cdmsf_sec0, COMIN_PORT);
-	outb(params->cdmsf_frame0, COMIN_PORT);
-	if (!flag_low(FL_STEN, BUSY_TIMEOUT))	/* Wait for status */
-		return -ERR_IF_CMD_TIMEOUT;
-	ack = inb(DATA_PORT);		/* read command acknowledge */
-	return ack==ST_PA_OK ? 0 : -ack;
-}
-
-
-/* Wait for command execution status. Choice between busy waiting
-   and sleeping. Return value <0 indicates timeout. */
-static inline int get_exec_status(int busy_waiting)
-{
-	unsigned char exec_status;
-
-	if (busy_waiting
-	    ? !flag_low(FL_STEN, BUSY_TIMEOUT)
-	    : !sleep_flag_low(FL_STEN, SLEEP_TIMEOUT))
-		return -ERR_IF_CMD_TIMEOUT;
-
-	exec_status = inb(DATA_PORT);
-	DEBUG((DEBUG_DRIVE_IF, "returned exec status 0x%02x", exec_status));
-	return exec_status;
-}
-
-
-/* Wait busy for extra byte of data that a command returns.
-   Return value <0 indicates timeout. */
-static inline int get_data(int short_timeout)
-{
-	unsigned char data;
-
-	if (!flag_low(FL_STEN, short_timeout ? FAST_TIMEOUT : BUSY_TIMEOUT))
-		return -ERR_IF_DATA_TIMEOUT;
-
-	data = inb(DATA_PORT);
-	DEBUG((DEBUG_DRIVE_IF, "returned data 0x%02x", data));
-	return data;
-}
-
-
-/* Returns 0 if failed */
-static int reset_drive(void)
-{
-	unsigned long count = 0;
-	int flags;
-
-	DEBUG((DEBUG_DRIVE_IF, "reset drive"));
-
-	outb(0, RESET_PORT);
-	while (++count < RESET_WAIT)
-		inb(DATA_PORT);
-
-	count = 0;
-	while ((flags = (inb(STATUS_PORT) & FL_RESET)) != FL_RESET)
-		if (++count >= BUSY_TIMEOUT)
-			break;
-
-	DEBUG((DEBUG_DRIVE_IF, "reset %s",
-		flags == FL_RESET ? "succeeded" : "failed"));
-
-	if (flags != FL_RESET)
-		return 0;		/* Reset failed */
-	outb(HCON_SDRQB, HCON_PORT);	/* Disable Suspend Data Transfer */
-	return 1;			/* Reset succeeded */
-}
-
-
-/* Facilities for asynchronous operation */
-
-/* Read status/data availability flags FL_STEN and FL_DTEN */
-static inline int stdt_flags(void)
-{
-	return inb(STATUS_PORT) & FL_STDT;
-}
-
-
-/* Fetch status that has previously been waited for. <0 means not available */
-static inline int fetch_status(void)
-{
-	unsigned char status;
-
-	if (inb(STATUS_PORT) & FL_STEN)
-		return -ERR_IF_NOSTAT;
-
-	status = inb(DATA_PORT);
-	DEBUG((DEBUG_DRIVE_IF, "fetched exec status 0x%02x", status));
-	return status;
-}
-
-
-/* Fetch data that has previously been waited for. */
-static inline void fetch_data(char *buf, int n)
-{
-	insb(DATA_PORT, buf, n);
-	DEBUG((DEBUG_DRIVE_IF, "fetched 0x%x bytes", n));
-}
-
-
-/* Flush status and data fifos */
-static inline void flush_data(void)
-{
-	while ((inb(STATUS_PORT) & FL_STDT) != FL_STDT)
-		inb(DATA_PORT);
-	DEBUG((DEBUG_DRIVE_IF, "flushed fifos"));
-}
-
-/* Command protocol */
-
-
-/* Send a simple command and wait for response. Command codes < COMFETCH
-   are quick response commands */
-static inline int exec_cmd(int cmd)
-{
-	int ack = send_cmd(cmd);
-	if (ack < 0)
-		return ack;
-	return get_exec_status(cmd < COMFETCH);
-}
-
-
-/* Send a command with parameters. Don't wait for the response,
- * which consists of data blocks read from the CD. */
-static inline int exec_read_cmd(int cmd, struct cdrom_msf *params)
-{
-	int ack = send_cmd(cmd);
-	if (ack < 0)
-		return ack;
-	return send_params(params);
-}
-
-
-/* Send a seek command with parameters and wait for response */
-static inline int exec_seek_cmd(int cmd, struct cdrom_msf *params)
-{
-	int ack = send_cmd(cmd);
-	if (ack < 0)
-		return ack;
-	ack = send_seek_params(params);
-	if (ack < 0)
-		return ack;
-	return 0;
-}
-
-
-/* Send a command with parameters and wait for response */
-static inline int exec_long_cmd(int cmd, struct cdrom_msf *params)
-{
-	int ack = exec_read_cmd(cmd, params);
-	if (ack < 0)
-		return ack;
-	return get_exec_status(0);
-}
-
-/* Address conversion routines */
-
-
-/* Binary to BCD (2 digits) */
-static inline void single_bin2bcd(u_char *p)
-{
-	DEBUG((DEBUG_CONV, "bin2bcd %02d", *p));
-	*p = (*p % 10) | ((*p / 10) << 4);
-}
-
-
-/* Convert entire msf struct */
-static void bin2bcd(struct cdrom_msf *msf)
-{
-	single_bin2bcd(&msf->cdmsf_min0);
-	single_bin2bcd(&msf->cdmsf_sec0);
-	single_bin2bcd(&msf->cdmsf_frame0);
-	single_bin2bcd(&msf->cdmsf_min1);
-	single_bin2bcd(&msf->cdmsf_sec1);
-	single_bin2bcd(&msf->cdmsf_frame1);
-}
-
-
-/* Linear block address to minute, second, frame form */
-#define CD_FPM	(CD_SECS * CD_FRAMES)	/* frames per minute */
-
-static void lba2msf(int lba, struct cdrom_msf *msf)
-{
-	DEBUG((DEBUG_CONV, "lba2msf %d", lba));
-	lba += CD_MSF_OFFSET;
-	msf->cdmsf_min0 = lba / CD_FPM; lba %= CD_FPM;
-	msf->cdmsf_sec0 = lba / CD_FRAMES;
-	msf->cdmsf_frame0 = lba % CD_FRAMES;
-	msf->cdmsf_min1 = 0;
-	msf->cdmsf_sec1 = 0;
-	msf->cdmsf_frame1 = 0;
-	bin2bcd(msf);
-}
-
-
-/* Two BCD digits to binary */
-static inline u_char bcd2bin(u_char bcd)
-{
-	DEBUG((DEBUG_CONV, "bcd2bin %x%02x", bcd));
-	return (bcd >> 4) * 10 + (bcd & 0x0f);
-}
-
-
-static void msf2lba(union cdrom_addr *addr)
-{
-	addr->lba = addr->msf.minute * CD_FPM
-	            + addr->msf.second * CD_FRAMES
-	            + addr->msf.frame - CD_MSF_OFFSET;
-}
-
-
-/* Minute, second, frame address BCD to binary or to linear address,
-   depending on MODE */
-static void msf_bcd2bin(union cdrom_addr *addr)
-{
-	addr->msf.minute = bcd2bin(addr->msf.minute);
-	addr->msf.second = bcd2bin(addr->msf.second);
-	addr->msf.frame = bcd2bin(addr->msf.frame);
-}
-
-/* High level drive commands */
-
-
-static int audio_status = CDROM_AUDIO_NO_STATUS;
-static char toc_uptodate = 0;
-static char disk_changed = 1;
-
-/* Get drive status, flagging completion of audio play and disk changes. */
-static int drive_status(void)
-{
-	int status;
-
-	status = exec_cmd(COMIOCTLISTAT);
-	DEBUG((DEBUG_DRIVE_IF, "IOCTLISTAT: %03x", status));
-	if (status < 0)
-		return status;
-	if (status == 0xff)	/* No status available */
-		return -ERR_IF_NOSTAT;
-
-	if (((status & ST_MODE_BITS) != ST_M_AUDIO) &&
-		(audio_status == CDROM_AUDIO_PLAY)) {
-		audio_status = CDROM_AUDIO_COMPLETED;
-	}
-
-	if (status & ST_DSK_CHG) {
-		toc_uptodate = 0;
-		disk_changed = 1;
-		audio_status = CDROM_AUDIO_NO_STATUS;
-	}
-
-	return status;
-}
-
-
-/* Read the current Q-channel info. Also used for reading the
-   table of contents. qp->cdsc_format must be set on entry to
-   indicate the desired address format */
-static int get_q_channel(struct cdrom_subchnl *qp)
-{
-	int status, d1, d2, d3, d4, d5, d6, d7, d8, d9, d10;
-
-	status = drive_status();
-	if (status < 0)
-		return status;
-	qp->cdsc_audiostatus = audio_status;
-
-	status = exec_cmd(COMSUBQ);
-	if (status < 0)
-		return status;
-
-	d1 = get_data(0);
-	if (d1 < 0)
-		return d1;
-	qp->cdsc_adr = d1;
-	qp->cdsc_ctrl = d1 >> 4;
-
-	d2 = get_data(0);
-	if (d2 < 0)
-		return d2;
-	qp->cdsc_trk = bcd2bin(d2);
-
-	d3 = get_data(0);
-	if (d3 < 0)
-		return d3;
-	qp->cdsc_ind = bcd2bin(d3);
-
-	d4 = get_data(0);
-	if (d4 < 0)
-		return d4;
-	qp->cdsc_reladdr.msf.minute = d4;
-
-	d5 = get_data(0);
-	if (d5 < 0)
-		return d5;
-	qp->cdsc_reladdr.msf.second = d5;
-
-	d6 = get_data(0);
-	if (d6 < 0)
-		return d6;
-	qp->cdsc_reladdr.msf.frame = d6;
-
-	d7 = get_data(0);
-	if (d7 < 0)
-		return d7;
-	/* byte not used */
-
-	d8 = get_data(0);
-	if (d8 < 0)
-		return d8;
-	qp->cdsc_absaddr.msf.minute = d8;
-
-	d9 = get_data(0);
-	if (d9 < 0)
-		return d9;
-	qp->cdsc_absaddr.msf.second = d9;
-
-	d10 = get_data(0);
-	if (d10 < 0)
-		return d10;
-	qp->cdsc_absaddr.msf.frame = d10;
-
-	DEBUG((DEBUG_TOC, "%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
-		d1, d2, d3, d4, d5, d6, d7, d8, d9, d10));
-
-	msf_bcd2bin(&qp->cdsc_absaddr);
-	msf_bcd2bin(&qp->cdsc_reladdr);
-	if (qp->cdsc_format == CDROM_LBA) {
-		msf2lba(&qp->cdsc_absaddr);
-		msf2lba(&qp->cdsc_reladdr);
-	}
-
-	return 0;
-}
-
-/* Table of contents handling */
-
-
-/* Errors in table of contents */
-#define ERR_TOC_MISSINGINFO	0x120
-#define ERR_TOC_MISSINGENTRY	0x121
-
-
-struct cdrom_disk_info {
-	unsigned char		first;
-	unsigned char		last;
-	struct cdrom_msf0	disk_length;
-	struct cdrom_msf0	first_track;
-	/* Multisession info: */
-	unsigned char		next;
-	struct cdrom_msf0	next_session;
-	struct cdrom_msf0	last_session;
-	unsigned char		multi;
-	unsigned char		xa;
-	unsigned char		audio;
-};
-static struct cdrom_disk_info disk_info;
-
-#define MAX_TRACKS		111
-static struct cdrom_subchnl toc[MAX_TRACKS];
-
-#define QINFO_FIRSTTRACK	100 /* bcd2bin(0xa0) */
-#define QINFO_LASTTRACK		101 /* bcd2bin(0xa1) */
-#define QINFO_DISKLENGTH	102 /* bcd2bin(0xa2) */
-#define QINFO_NEXTSESSION	110 /* bcd2bin(0xb0) */
-
-#define I_FIRSTTRACK	0x01
-#define I_LASTTRACK	0x02
-#define I_DISKLENGTH	0x04
-#define I_NEXTSESSION	0x08
-#define I_ALL	(I_FIRSTTRACK | I_LASTTRACK | I_DISKLENGTH)
-
-
-#if DEBUG_TOC
-static void toc_debug_info(int i)
-{
-	printk(KERN_DEBUG "#%3d ctl %1x, adr %1x, track %2d index %3d"
-		"  %2d:%02d.%02d %2d:%02d.%02d\n",
-		i, toc[i].cdsc_ctrl, toc[i].cdsc_adr,
-		toc[i].cdsc_trk, toc[i].cdsc_ind,
-		toc[i].cdsc_reladdr.msf.minute,
-		toc[i].cdsc_reladdr.msf.second,
-		toc[i].cdsc_reladdr.msf.frame,
-		toc[i].cdsc_absaddr.msf.minute,
-		toc[i].cdsc_absaddr.msf.second,
-		toc[i].cdsc_absaddr.msf.frame);
-}
-#endif
-
-
-static int read_toc(void)
-{
-	int status, limit, count;
-	unsigned char got_info = 0;
-	struct cdrom_subchnl q_info;
-#if DEBUG_TOC
-	int i;
-#endif
-
-	DEBUG((DEBUG_TOC, "starting read_toc"));
-
-	count = 0;
-	for (limit = 60; limit > 0; limit--) {
-		int index;
-
-		q_info.cdsc_format = CDROM_MSF;
-		status = get_q_channel(&q_info);
-		if (status < 0)
-			return status;
-
-		index = q_info.cdsc_ind;
-		if (index > 0 && index < MAX_TRACKS
-		    && q_info.cdsc_trk == 0 && toc[index].cdsc_ind == 0) {
-			toc[index] = q_info;
-			DEBUG((DEBUG_TOC, "got %d", index));
-			if (index < 100)
-				count++;
-
-			switch (q_info.cdsc_ind) {
-			case QINFO_FIRSTTRACK:
-				got_info |= I_FIRSTTRACK;
-				break;
-			case QINFO_LASTTRACK:
-				got_info |= I_LASTTRACK;
-				break;
-			case QINFO_DISKLENGTH:
-				got_info |= I_DISKLENGTH;
-				break;
-			case QINFO_NEXTSESSION:
-				got_info |= I_NEXTSESSION;
-				break;
-			}
-		}
-
-		if ((got_info & I_ALL) == I_ALL
-		    && toc[QINFO_FIRSTTRACK].cdsc_absaddr.msf.minute + count
-		       >= toc[QINFO_LASTTRACK].cdsc_absaddr.msf.minute + 1)
-			break;
-	}
-
-	/* Construct disk_info from TOC */
-	if (disk_info.first == 0) {
-		disk_info.first = toc[QINFO_FIRSTTRACK].cdsc_absaddr.msf.minute;
-		disk_info.first_track.minute =
-			toc[disk_info.first].cdsc_absaddr.msf.minute;
-		disk_info.first_track.second =
-			toc[disk_info.first].cdsc_absaddr.msf.second;
-		disk_info.first_track.frame =
-			toc[disk_info.first].cdsc_absaddr.msf.frame;
-	}
-	disk_info.last = toc[QINFO_LASTTRACK].cdsc_absaddr.msf.minute;
-	disk_info.disk_length.minute =
-			toc[QINFO_DISKLENGTH].cdsc_absaddr.msf.minute;
-	disk_info.disk_length.second =
-			toc[QINFO_DISKLENGTH].cdsc_absaddr.msf.second-2;
-	disk_info.disk_length.frame =
-			toc[QINFO_DISKLENGTH].cdsc_absaddr.msf.frame;
-	disk_info.next_session.minute =
-			toc[QINFO_NEXTSESSION].cdsc_reladdr.msf.minute;
-	disk_info.next_session.second =
-			toc[QINFO_NEXTSESSION].cdsc_reladdr.msf.second;
-	disk_info.next_session.frame =
-			toc[QINFO_NEXTSESSION].cdsc_reladdr.msf.frame;
-	disk_info.next = toc[QINFO_FIRSTTRACK].cdsc_absaddr.msf.minute;
-	disk_info.last_session.minute =
-			toc[disk_info.next].cdsc_absaddr.msf.minute;
-	disk_info.last_session.second =
-			toc[disk_info.next].cdsc_absaddr.msf.second;
-	disk_info.last_session.frame =
-			toc[disk_info.next].cdsc_absaddr.msf.frame;
-	toc[disk_info.last + 1].cdsc_absaddr.msf.minute =
-			disk_info.disk_length.minute;
-	toc[disk_info.last + 1].cdsc_absaddr.msf.second =
-			disk_info.disk_length.second;
-	toc[disk_info.last + 1].cdsc_absaddr.msf.frame =
-			disk_info.disk_length.frame;
-#if DEBUG_TOC
-	for (i = 1; i <= disk_info.last + 1; i++)
-		toc_debug_info(i);
-	toc_debug_info(QINFO_FIRSTTRACK);
-	toc_debug_info(QINFO_LASTTRACK);
-	toc_debug_info(QINFO_DISKLENGTH);
-	toc_debug_info(QINFO_NEXTSESSION);
-#endif
-
-	DEBUG((DEBUG_TOC, "exiting read_toc, got_info %x, count %d",
-		got_info, count));
-	if ((got_info & I_ALL) != I_ALL
-	    || toc[QINFO_FIRSTTRACK].cdsc_absaddr.msf.minute + count
-	       < toc[QINFO_LASTTRACK].cdsc_absaddr.msf.minute + 1)
-		return -ERR_TOC_MISSINGINFO;
-	return 0;
-}
-
-
-#ifdef MULTISESSION
-static int get_multi_disk_info(void)
-{
-	int sessions, status;
-	struct cdrom_msf multi_index;
-
-
-	for (sessions = 2; sessions < 10 /* %%for now */; sessions++) {
-		int count;
-
-		for (count = 100; count < MAX_TRACKS; count++) 
-			toc[count].cdsc_ind = 0;
-
-		multi_index.cdmsf_min0 = disk_info.next_session.minute;
-		multi_index.cdmsf_sec0 = disk_info.next_session.second;
-		multi_index.cdmsf_frame0 = disk_info.next_session.frame;
-		if (multi_index.cdmsf_sec0 >= 20)
-			multi_index.cdmsf_sec0 -= 20;
-		else {
-			multi_index.cdmsf_sec0 += 40;
-			multi_index.cdmsf_min0--;
-		}
-		DEBUG((DEBUG_MULTIS, "Try %d: %2d:%02d.%02d", sessions,
-			multi_index.cdmsf_min0,
-			multi_index.cdmsf_sec0,
-			multi_index.cdmsf_frame0));
-		bin2bcd(&multi_index);
-		multi_index.cdmsf_min1 = 0;
-		multi_index.cdmsf_sec1 = 0;
-		multi_index.cdmsf_frame1 = 1;
-
-		status = exec_read_cmd(COMREAD, &multi_index);
-		if (status < 0) {
-			DEBUG((DEBUG_TOC, "exec_read_cmd COMREAD: %02x",
-				-status));
-			break;
-		}
-		status = sleep_flag_low(FL_DTEN, MULTI_SEEK_TIMEOUT) ?
-				0 : -ERR_TOC_MISSINGINFO;
-		flush_data();
-		if (status < 0) {
-			DEBUG((DEBUG_TOC, "sleep_flag_low: %02x", -status));
-			break;
-		}
-
-		status = read_toc();
-		if (status < 0) {
-			DEBUG((DEBUG_TOC, "read_toc: %02x", -status));
-			break;
-		}
-
-		disk_info.multi = 1;
-	}
-
-	exec_cmd(COMSTOP);
-
-	if (status < 0)
-		return -EIO;
-	return 0;
-}
-#endif /* MULTISESSION */
-
-
-static int update_toc(void)
-{
-	int status, count;
-
-	if (toc_uptodate)
-		return 0;
-
-	DEBUG((DEBUG_TOC, "starting update_toc"));
-
-	disk_info.first = 0;
-	for (count = 0; count < MAX_TRACKS; count++) 
-		toc[count].cdsc_ind = 0;
-
-	status = exec_cmd(COMLEADIN);
-	if (status < 0)
-		return -EIO;
-
-	status = read_toc();
-	if (status < 0) {
-		DEBUG((DEBUG_TOC, "read_toc: %02x", -status));
-		return -EIO;
-	}
-
-        /* Audio disk detection. Look at first track. */
-	disk_info.audio =
-		(toc[disk_info.first].cdsc_ctrl & CDROM_DATA_TRACK) ? 0 : 1;
-
-	/* XA detection */
-	disk_info.xa = drive_status() & ST_MODE2TRACK;
-
-	/* Multisession detection: if we want this, define MULTISESSION */
-	disk_info.multi = 0;
-#ifdef MULTISESSION
- 	if (disk_info.xa)
-		get_multi_disk_info();	/* Here disk_info.multi is set */
-#endif /* MULTISESSION */
-	if (disk_info.multi)
-		printk(KERN_WARNING "optcd: Multisession support experimental, "
-			"see Documentation/cdrom/optcd\n");
-
-	DEBUG((DEBUG_TOC, "exiting update_toc"));
-
-	toc_uptodate = 1;
-	return 0;
-}
-
-/* Request handling */
-
-static int current_valid(void)
-{
-        return CURRENT &&
-		rq_data_dir(CURRENT) == READ &&
-		CURRENT->sector != -1;
-}
-
-/* Buffers for block size conversion. */
-#define NOBUF		-1
-
-static char buf[CD_FRAMESIZE * N_BUFS];
-static volatile int buf_bn[N_BUFS], next_bn;
-static volatile int buf_in = 0, buf_out = NOBUF;
-
-static inline void opt_invalidate_buffers(void)
-{
-	int i;
-
-	DEBUG((DEBUG_BUFFERS, "executing opt_invalidate_buffers"));
-
-	for (i = 0; i < N_BUFS; i++)
-		buf_bn[i] = NOBUF;
-	buf_out = NOBUF;
-}
-
-
-/* Take care of the different block sizes between cdrom and Linux.
-   When Linux gets variable block sizes this will probably go away. */
-static void transfer(void)
-{
-#if DEBUG_BUFFERS | DEBUG_REQUEST
-	printk(KERN_DEBUG "optcd: executing transfer\n");
-#endif
-
-	if (!current_valid())
-		return;
-	while (CURRENT -> nr_sectors) {
-		int bn = CURRENT -> sector / 4;
-		int i, offs, nr_sectors;
-		for (i = 0; i < N_BUFS && buf_bn[i] != bn; ++i);
-
-		DEBUG((DEBUG_REQUEST, "found %d", i));
-
-		if (i >= N_BUFS) {
-			buf_out = NOBUF;
-			break;
-		}
-
-		offs = (i * 4 + (CURRENT -> sector & 3)) * 512;
-		nr_sectors = 4 - (CURRENT -> sector & 3);
-
-		if (buf_out != i) {
-			buf_out = i;
-			if (buf_bn[i] != bn) {
-				buf_out = NOBUF;
-				continue;
-			}
-		}
-
-		if (nr_sectors > CURRENT -> nr_sectors)
-			nr_sectors = CURRENT -> nr_sectors;
-		memcpy(CURRENT -> buffer, buf + offs, nr_sectors * 512);
-		CURRENT -> nr_sectors -= nr_sectors;
-		CURRENT -> sector += nr_sectors;
-		CURRENT -> buffer += nr_sectors * 512;
-	}
-}
-
-
-/* State machine for reading disk blocks */
-
-enum state_e {
-	S_IDLE,		/* 0 */
-	S_START,	/* 1 */
-	S_READ,		/* 2 */
-	S_DATA,		/* 3 */
-	S_STOP,		/* 4 */
-	S_STOPPING	/* 5 */
-};
-
-static volatile enum state_e state = S_IDLE;
-#if DEBUG_STATE
-static volatile enum state_e state_old = S_STOP;
-static volatile int flags_old = 0;
-static volatile long state_n = 0;
-#endif
-
-
-/* Used as mutex to keep do_optcd_request (and other processes calling
-   ioctl) out while some process is inside a VFS call.
-   Reverse is accomplished by checking if state = S_IDLE upon entry
-   of opt_ioctl and opt_media_change. */
-static int in_vfs = 0;
-
-
-static volatile int transfer_is_active = 0;
-static volatile int error = 0;	/* %% do something with this?? */
-static int tries;		/* ibid?? */
-static int timeout = 0;
-
-static void poll(unsigned long data);
-static struct timer_list req_timer = {.function = poll};
-
-
-static void poll(unsigned long data)
-{
-	static volatile int read_count = 1;
-	int flags;
-	int loop_again = 1;
-	int status = 0;
-	int skip = 0;
-
-	if (error) {
-		printk(KERN_ERR "optcd: I/O error 0x%02x\n", error);
-		opt_invalidate_buffers();
-		if (!tries--) {
-			printk(KERN_ERR "optcd: read block %d failed;"
-				" Giving up\n", next_bn);
-			if (transfer_is_active)
-				loop_again = 0;
-			if (current_valid())
-				end_request(CURRENT, 0);
-			tries = 5;
-		}
-		error = 0;
-		state = S_STOP;
-	}
-
-	while (loop_again)
-	{
-		loop_again = 0; /* each case must flip this back to 1 if we want
-		                 to come back up here */
-
-#if DEBUG_STATE
-		if (state == state_old)
-			state_n++;
-		else {
-			state_old = state;
-			if (++state_n > 1)
-				printk(KERN_DEBUG "optcd: %ld times "
-					"in previous state\n", state_n);
-			printk(KERN_DEBUG "optcd: state %d\n", state);
-			state_n = 0;
-		}
-#endif
-
-		switch (state) {
-		case S_IDLE:
-			return;
-		case S_START:
-			if (in_vfs)
-				break;
-			if (send_cmd(COMDRVST)) {
-				state = S_IDLE;
-				while (current_valid())
-					end_request(CURRENT, 0);
-				return;
-			}
-			state = S_READ;
-			timeout = READ_TIMEOUT;
-			break;
-		case S_READ: {
-			struct cdrom_msf msf;
-			if (!skip) {
-				status = fetch_status();
-				if (status < 0)
-					break;
-				if (status & ST_DSK_CHG) {
-					toc_uptodate = 0;
-					opt_invalidate_buffers();
-				}
-			}
-			skip = 0;
-			if ((status & ST_DOOR_OPEN) || (status & ST_DRVERR)) {
-				toc_uptodate = 0;
-				opt_invalidate_buffers();
-				printk(KERN_WARNING "optcd: %s\n",
-					(status & ST_DOOR_OPEN)
-					? "door open"
-					: "disk removed");
-				state = S_IDLE;
-				while (current_valid())
-					end_request(CURRENT, 0);
-				return;
-			}
-			if (!current_valid()) {
-				state = S_STOP;
-				loop_again = 1;
-				break;
-			}
-			next_bn = CURRENT -> sector / 4;
-			lba2msf(next_bn, &msf);
-			read_count = N_BUFS;
-			msf.cdmsf_frame1 = read_count; /* Not BCD! */
-
-			DEBUG((DEBUG_REQUEST, "reading %x:%x.%x %x:%x.%x",
-				msf.cdmsf_min0,
-				msf.cdmsf_sec0,
-				msf.cdmsf_frame0,
-				msf.cdmsf_min1,
-				msf.cdmsf_sec1,
-				msf.cdmsf_frame1));
-			DEBUG((DEBUG_REQUEST, "next_bn:%d buf_in:%d"
-				" buf_out:%d buf_bn:%d",
-				next_bn,
-				buf_in,
-				buf_out,
-				buf_bn[buf_in]));
-
-			exec_read_cmd(COMREAD, &msf);
-			state = S_DATA;
-			timeout = READ_TIMEOUT;
-			break;
-		}
-		case S_DATA:
-			flags = stdt_flags() & (FL_STEN|FL_DTEN);
-
-#if DEBUG_STATE
-			if (flags != flags_old) {
-				flags_old = flags;
-				printk(KERN_DEBUG "optcd: flags:%x\n", flags);
-			}
-			if (flags == FL_STEN)
-				printk(KERN_DEBUG "timeout cnt: %d\n", timeout);
-#endif
-
-			switch (flags) {
-			case FL_DTEN:		/* only STEN low */
-				if (!tries--) {
-					printk(KERN_ERR
-						"optcd: read block %d failed; "
-						"Giving up\n", next_bn);
-					if (transfer_is_active) {
-						tries = 0;
-						break;
-					}
-					if (current_valid())
-						end_request(CURRENT, 0);
-					tries = 5;
-				}
-				state = S_START;
-				timeout = READ_TIMEOUT;
-				loop_again = 1;
-			case (FL_STEN|FL_DTEN):	 /* both high */
-				break;
-			default:	/* DTEN low */
-				tries = 5;
-				if (!current_valid() && buf_in == buf_out) {
-					state = S_STOP;
-					loop_again = 1;
-					break;
-				}
-				if (read_count<=0)
-					printk(KERN_WARNING
-						"optcd: warning - try to read"
-						" 0 frames\n");
-				while (read_count) {
-					buf_bn[buf_in] = NOBUF;
-					if (!flag_low(FL_DTEN, BUSY_TIMEOUT)) {
-					/* should be no waiting here!?? */
-						printk(KERN_ERR
-						   "read_count:%d "
-						   "CURRENT->nr_sectors:%ld "
-						   "buf_in:%d\n",
-							read_count,
-							CURRENT->nr_sectors,
-							buf_in);
-						printk(KERN_ERR
-							"transfer active: %x\n",
-							transfer_is_active);
-						read_count = 0;
-						state = S_STOP;
-						loop_again = 1;
-						end_request(CURRENT, 0);
-						break;
-					}
-					fetch_data(buf+
-					    CD_FRAMESIZE*buf_in,
-					    CD_FRAMESIZE);
-					read_count--;
-
-					DEBUG((DEBUG_REQUEST,
-						"S_DATA; ---I've read data- "
-						"read_count: %d",
-						read_count));
-					DEBUG((DEBUG_REQUEST,
-						"next_bn:%d  buf_in:%d "
-						"buf_out:%d  buf_bn:%d",
-						next_bn,
-						buf_in,
-						buf_out,
-						buf_bn[buf_in]));
-
-					buf_bn[buf_in] = next_bn++;
-					if (buf_out == NOBUF)
-						buf_out = buf_in;
-					buf_in = buf_in + 1 ==
-						N_BUFS ? 0 : buf_in + 1;
-				}
-				if (!transfer_is_active) {
-					while (current_valid()) {
-						transfer();
-						if (CURRENT -> nr_sectors == 0)
-							end_request(CURRENT, 1);
-						else
-							break;
-					}
-				}
-
-				if (current_valid()
-				    && (CURRENT -> sector / 4 < next_bn ||
-				    CURRENT -> sector / 4 >
-				     next_bn + N_BUFS)) {
-					state = S_STOP;
-					loop_again = 1;
-					break;
-				}
-				timeout = READ_TIMEOUT;
-				if (read_count == 0) {
-					state = S_STOP;
-					loop_again = 1;
-					break;
-				}
-			}
-			break;
-		case S_STOP:
-			if (read_count != 0)
-				printk(KERN_ERR
-					"optcd: discard data=%x frames\n",
-					read_count);
-			flush_data();
-			if (send_cmd(COMDRVST)) {
-				state = S_IDLE;
-				while (current_valid())
-					end_request(CURRENT, 0);
-				return;
-			}
-			state = S_STOPPING;
-			timeout = STOP_TIMEOUT;
-			break;
-		case S_STOPPING:
-			status = fetch_status();
-			if (status < 0 && timeout)
-					break;
-			if ((status >= 0) && (status & ST_DSK_CHG)) {
-				toc_uptodate = 0;
-				opt_invalidate_buffers();
-			}
-			if (current_valid()) {
-				if (status >= 0) {
-					state = S_READ;
-					loop_again = 1;
-					skip = 1;
-					break;
-				} else {
-					state = S_START;
-					timeout = 1;
-				}
-			} else {
-				state = S_IDLE;
-				return;
-			}
-			break;
-		default:
-			printk(KERN_ERR "optcd: invalid state %d\n", state);
-			return;
-		} /* case */
-	} /* while */
-
-	if (!timeout--) {
-		printk(KERN_ERR "optcd: timeout in state %d\n", state);
-		state = S_STOP;
-		if (exec_cmd(COMSTOP) < 0) {
-			state = S_IDLE;
-			while (current_valid())
-				end_request(CURRENT, 0);
-			return;
-		}
-	}
-
-	mod_timer(&req_timer, jiffies + HZ/100);
-}
-
-
-static void do_optcd_request(request_queue_t * q)
-{
-	DEBUG((DEBUG_REQUEST, "do_optcd_request(%ld+%ld)",
-	       CURRENT -> sector, CURRENT -> nr_sectors));
-
-	if (disk_info.audio) {
-		printk(KERN_WARNING "optcd: tried to mount an Audio CD\n");
-		end_request(CURRENT, 0);
-		return;
-	}
-
-	transfer_is_active = 1;
-	while (current_valid()) {
-		transfer();	/* First try to transfer block from buffers */
-		if (CURRENT -> nr_sectors == 0) {
-			end_request(CURRENT, 1);
-		} else {	/* Want to read a block not in buffer */
-			buf_out = NOBUF;
-			if (state == S_IDLE) {
-				/* %% Should this block the request queue?? */
-				if (update_toc() < 0) {
-					while (current_valid())
-						end_request(CURRENT, 0);
-					break;
-				}
-				/* Start state machine */
-				state = S_START;
-				timeout = READ_TIMEOUT;
-				tries = 5;
-				/* %% why not start right away?? */
-				mod_timer(&req_timer, jiffies + HZ/100);
-			}
-			break;
-		}
-	}
-	transfer_is_active = 0;
-
-	DEBUG((DEBUG_REQUEST, "next_bn:%d  buf_in:%d buf_out:%d  buf_bn:%d",
-	       next_bn, buf_in, buf_out, buf_bn[buf_in]));
-	DEBUG((DEBUG_REQUEST, "do_optcd_request ends"));
-}
-
-/* IOCTLs */
-
-
-static char auto_eject = 0;
-
-static int cdrompause(void)
-{
-	int status;
-
-	if (audio_status != CDROM_AUDIO_PLAY)
-		return -EINVAL;
-
-	status = exec_cmd(COMPAUSEON);
-	if (status < 0) {
-		DEBUG((DEBUG_VFS, "exec_cmd COMPAUSEON: %02x", -status));
-		return -EIO;
-	}
-	audio_status = CDROM_AUDIO_PAUSED;
-	return 0;
-}
-
-
-static int cdromresume(void)
-{
-	int status;
-
-	if (audio_status != CDROM_AUDIO_PAUSED)
-		return -EINVAL;
-
-	status = exec_cmd(COMPAUSEOFF);
-	if (status < 0) {
-		DEBUG((DEBUG_VFS, "exec_cmd COMPAUSEOFF: %02x", -status));
-		audio_status = CDROM_AUDIO_ERROR;
-		return -EIO;
-	}
-	audio_status = CDROM_AUDIO_PLAY;
-	return 0;
-}
-
-
-static int cdromplaymsf(void __user *arg)
-{
-	int status;
-	struct cdrom_msf msf;
-
-	if (copy_from_user(&msf, arg, sizeof msf))
-		return -EFAULT;
-
-	bin2bcd(&msf);
-	status = exec_long_cmd(COMPLAY, &msf);
-	if (status < 0) {
-		DEBUG((DEBUG_VFS, "exec_long_cmd COMPLAY: %02x", -status));
-		audio_status = CDROM_AUDIO_ERROR;
-		return -EIO;
-	}
-
-	audio_status = CDROM_AUDIO_PLAY;
-	return 0;
-}
-
-
-static int cdromplaytrkind(void __user *arg)
-{
-	int status;
-	struct cdrom_ti ti;
-	struct cdrom_msf msf;
-
-	if (copy_from_user(&ti, arg, sizeof ti))
-		return -EFAULT;
-
-	if (ti.cdti_trk0 < disk_info.first
-	    || ti.cdti_trk0 > disk_info.last
-	    || ti.cdti_trk1 < ti.cdti_trk0)
-		return -EINVAL;
-	if (ti.cdti_trk1 > disk_info.last)
-		ti.cdti_trk1 = disk_info.last;
-
-	msf.cdmsf_min0 = toc[ti.cdti_trk0].cdsc_absaddr.msf.minute;
-	msf.cdmsf_sec0 = toc[ti.cdti_trk0].cdsc_absaddr.msf.second;
-	msf.cdmsf_frame0 = toc[ti.cdti_trk0].cdsc_absaddr.msf.frame;
-	msf.cdmsf_min1 = toc[ti.cdti_trk1 + 1].cdsc_absaddr.msf.minute;
-	msf.cdmsf_sec1 = toc[ti.cdti_trk1 + 1].cdsc_absaddr.msf.second;
-	msf.cdmsf_frame1 = toc[ti.cdti_trk1 + 1].cdsc_absaddr.msf.frame;
-
-	DEBUG((DEBUG_VFS, "play %02d:%02d.%02d to %02d:%02d.%02d",
-		msf.cdmsf_min0,
-		msf.cdmsf_sec0,
-		msf.cdmsf_frame0,
-		msf.cdmsf_min1,
-		msf.cdmsf_sec1,
-		msf.cdmsf_frame1));
-
-	bin2bcd(&msf);
-	status = exec_long_cmd(COMPLAY, &msf);
-	if (status < 0) {
-		DEBUG((DEBUG_VFS, "exec_long_cmd COMPLAY: %02x", -status));
-		audio_status = CDROM_AUDIO_ERROR;
-		return -EIO;
-	}
-
-	audio_status = CDROM_AUDIO_PLAY;
-	return 0;
-}
-
-
-static int cdromreadtochdr(void __user *arg)
-{
-	struct cdrom_tochdr tochdr;
-
-	tochdr.cdth_trk0 = disk_info.first;
-	tochdr.cdth_trk1 = disk_info.last;
-
-	return copy_to_user(arg, &tochdr, sizeof tochdr) ? -EFAULT : 0;
-}
-
-
-static int cdromreadtocentry(void __user *arg)
-{
-	struct cdrom_tocentry entry;
-	struct cdrom_subchnl *tocptr;
-
-	if (copy_from_user(&entry, arg, sizeof entry))
-		return -EFAULT;
-
-	if (entry.cdte_track == CDROM_LEADOUT)
-		tocptr = &toc[disk_info.last + 1];
-	else if (entry.cdte_track > disk_info.last
-		|| entry.cdte_track < disk_info.first)
-		return -EINVAL;
-	else
-		tocptr = &toc[entry.cdte_track];
-
-	entry.cdte_adr = tocptr->cdsc_adr;
-	entry.cdte_ctrl = tocptr->cdsc_ctrl;
-	entry.cdte_addr.msf.minute = tocptr->cdsc_absaddr.msf.minute;
-	entry.cdte_addr.msf.second = tocptr->cdsc_absaddr.msf.second;
-	entry.cdte_addr.msf.frame = tocptr->cdsc_absaddr.msf.frame;
-	/* %% What should go into entry.cdte_datamode? */
-
-	if (entry.cdte_format == CDROM_LBA)
-		msf2lba(&entry.cdte_addr);
-	else if (entry.cdte_format != CDROM_MSF)
-		return -EINVAL;
-
-	return copy_to_user(arg, &entry, sizeof entry) ? -EFAULT : 0;
-}
-
-
-static int cdromvolctrl(void __user *arg)
-{
-	int status;
-	struct cdrom_volctrl volctrl;
-	struct cdrom_msf msf;
-
-	if (copy_from_user(&volctrl, arg, sizeof volctrl))
-		return -EFAULT;
-
-	msf.cdmsf_min0 = 0x10;
-	msf.cdmsf_sec0 = 0x32;
-	msf.cdmsf_frame0 = volctrl.channel0;
-	msf.cdmsf_min1 = volctrl.channel1;
-	msf.cdmsf_sec1 = volctrl.channel2;
-	msf.cdmsf_frame1 = volctrl.channel3;
-
-	status = exec_long_cmd(COMCHCTRL, &msf);
-	if (status < 0) {
-		DEBUG((DEBUG_VFS, "exec_long_cmd COMCHCTRL: %02x", -status));
-		return -EIO;
-	}
-	return 0;
-}
-
-
-static int cdromsubchnl(void __user *arg)
-{
-	int status;
-	struct cdrom_subchnl subchnl;
-
-	if (copy_from_user(&subchnl, arg, sizeof subchnl))
-		return -EFAULT;
-
-	if (subchnl.cdsc_format != CDROM_LBA
-	    && subchnl.cdsc_format != CDROM_MSF)
-		return -EINVAL;
-
-	status = get_q_channel(&subchnl);
-	if (status < 0) {
-		DEBUG((DEBUG_VFS, "get_q_channel: %02x", -status));
-		return -EIO;
-	}
-
-	if (copy_to_user(arg, &subchnl, sizeof subchnl))
-		return -EFAULT;
-	return 0;
-}
-
-
-static struct gendisk *optcd_disk;
-
-
-static int cdromread(void __user *arg, int blocksize, int cmd)
-{
-	int status;
-	struct cdrom_msf msf;
-
-	if (copy_from_user(&msf, arg, sizeof msf))
-		return -EFAULT;
-
-	bin2bcd(&msf);
-	msf.cdmsf_min1 = 0;
-	msf.cdmsf_sec1 = 0;
-	msf.cdmsf_frame1 = 1;	/* read only one frame */
-	status = exec_read_cmd(cmd, &msf);
-
-	DEBUG((DEBUG_VFS, "read cmd status 0x%x", status));
-
-	if (!sleep_flag_low(FL_DTEN, SLEEP_TIMEOUT))
-		return -EIO;
-
-	fetch_data(optcd_disk->private_data, blocksize);
-
-	if (copy_to_user(arg, optcd_disk->private_data, blocksize))
-		return -EFAULT;
-
-	return 0;
-}
-
-
-static int cdromseek(void __user *arg)
-{
-	int status;
-	struct cdrom_msf msf;
-
-	if (copy_from_user(&msf, arg, sizeof msf))
-		return -EFAULT;
-
-	bin2bcd(&msf);
-	status = exec_seek_cmd(COMSEEK, &msf);
-
-	DEBUG((DEBUG_VFS, "COMSEEK status 0x%x", status));
-
-	if (status < 0)
-		return -EIO;
-	return 0;
-}
-
-
-#ifdef MULTISESSION
-static int cdrommultisession(void __user *arg)
-{
-	struct cdrom_multisession ms;
-
-	if (copy_from_user(&ms, arg, sizeof ms))
-		return -EFAULT;
-
-	ms.addr.msf.minute = disk_info.last_session.minute;
-	ms.addr.msf.second = disk_info.last_session.second;
-	ms.addr.msf.frame = disk_info.last_session.frame;
-
-	if (ms.addr_format != CDROM_LBA
-	   && ms.addr_format != CDROM_MSF)
-		return -EINVAL;
-	if (ms.addr_format == CDROM_LBA)
-		msf2lba(&ms.addr);
-
-	ms.xa_flag = disk_info.xa;
-
-  	if (copy_to_user(arg, &ms, sizeof(struct cdrom_multisession)))
-		return -EFAULT;
-
-#if DEBUG_MULTIS
- 	if (ms.addr_format == CDROM_MSF)
-               	printk(KERN_DEBUG
-			"optcd: multisession xa:%d, msf:%02d:%02d.%02d\n",
-			ms.xa_flag,
-			ms.addr.msf.minute,
-			ms.addr.msf.second,
-			ms.addr.msf.frame);
-	else
-		printk(KERN_DEBUG
-		    "optcd: multisession %d, lba:0x%08x [%02d:%02d.%02d])\n",
-			ms.xa_flag,
-			ms.addr.lba,
-			disk_info.last_session.minute,
-			disk_info.last_session.second,
-			disk_info.last_session.frame);
-#endif /* DEBUG_MULTIS */
-
-	return 0;
-}
-#endif /* MULTISESSION */
-
-
-static int cdromreset(void)
-{
-	if (state != S_IDLE) {
-		error = 1;
-		tries = 0;
-	}
-
-	toc_uptodate = 0;
-	disk_changed = 1;
-	opt_invalidate_buffers();
-	audio_status = CDROM_AUDIO_NO_STATUS;
-
-	if (!reset_drive())
-		return -EIO;
-	return 0;
-}
-
-/* VFS calls */
-
-
-static int opt_ioctl(struct inode *ip, struct file *fp,
-                     unsigned int cmd, unsigned long arg)
-{
-	int status, err, retval = 0;
-	void __user *argp = (void __user *)arg;
-
-	DEBUG((DEBUG_VFS, "starting opt_ioctl"));
-
-	if (!ip)
-		return -EINVAL;
-
-	if (cmd == CDROMRESET)
-		return cdromreset();
-
-	/* is do_optcd_request or another ioctl busy? */
-	if (state != S_IDLE || in_vfs)
-		return -EBUSY;
-
-	in_vfs = 1;
-
-	status = drive_status();
-	if (status < 0) {
-		DEBUG((DEBUG_VFS, "drive_status: %02x", -status));
-		in_vfs = 0;
-		return -EIO;
-	}
-
-	if (status & ST_DOOR_OPEN)
-		switch (cmd) {	/* Actions that can be taken with door open */
-		case CDROMCLOSETRAY:
-			/* We do this before trying to read the toc. */
-			err = exec_cmd(COMCLOSE);
-			if (err < 0) {
-				DEBUG((DEBUG_VFS,
-				       "exec_cmd COMCLOSE: %02x", -err));
-				in_vfs = 0;
-				return -EIO;
-			}
-			break;
-		default:	in_vfs = 0;
-				return -EBUSY;
-		}
-
-	err = update_toc();
-	if (err < 0) {
-		DEBUG((DEBUG_VFS, "update_toc: %02x", -err));
-		in_vfs = 0;
-		return -EIO;
-	}
-
-	DEBUG((DEBUG_VFS, "ioctl cmd 0x%x", cmd));
-
-	switch (cmd) {
-	case CDROMPAUSE:	retval = cdrompause(); break;
-	case CDROMRESUME:	retval = cdromresume(); break;
-	case CDROMPLAYMSF:	retval = cdromplaymsf(argp); break;
-	case CDROMPLAYTRKIND:	retval = cdromplaytrkind(argp); break;
-	case CDROMREADTOCHDR:	retval = cdromreadtochdr(argp); break;
-	case CDROMREADTOCENTRY:	retval = cdromreadtocentry(argp); break;
-
-	case CDROMSTOP:		err = exec_cmd(COMSTOP);
-				if (err < 0) {
-					DEBUG((DEBUG_VFS,
-						"exec_cmd COMSTOP: %02x",
-						-err));
-					retval = -EIO;
-				} else
-					audio_status = CDROM_AUDIO_NO_STATUS;
-				break;
-	case CDROMSTART:	break;	/* This is a no-op */
-	case CDROMEJECT:	err = exec_cmd(COMUNLOCK);
-				if (err < 0) {
-					DEBUG((DEBUG_VFS,
-						"exec_cmd COMUNLOCK: %02x",
-						-err));
-					retval = -EIO;
-					break;
-				}
-				err = exec_cmd(COMOPEN);
-				if (err < 0) {
-					DEBUG((DEBUG_VFS,
-						"exec_cmd COMOPEN: %02x",
-						-err));
-					retval = -EIO;
-				}
-				break;
-
-	case CDROMVOLCTRL:	retval = cdromvolctrl(argp); break;
-	case CDROMSUBCHNL:	retval = cdromsubchnl(argp); break;
-
-	/* The drive detects the mode and automatically delivers the
-	   correct 2048 bytes, so we don't need these IOCTLs */
-	case CDROMREADMODE2:	retval = -EINVAL; break;
-	case CDROMREADMODE1:	retval = -EINVAL; break;
-
-	/* Drive doesn't support reading audio */
-	case CDROMREADAUDIO:	retval = -EINVAL; break;
-
-	case CDROMEJECT_SW:	auto_eject = (char) arg;
-				break;
-
-#ifdef MULTISESSION
-	case CDROMMULTISESSION:	retval = cdrommultisession(argp); break;
-#endif
-
-	case CDROM_GET_MCN:	retval = -EINVAL; break; /* not implemented */
-	case CDROMVOLREAD:	retval = -EINVAL; break; /* not implemented */
-
-	case CDROMREADRAW:
-			/* this drive delivers 2340 bytes in raw mode */
-			retval = cdromread(argp, CD_FRAMESIZE_RAW1, COMREADRAW);
-			break;
-	case CDROMREADCOOKED:
-			retval = cdromread(argp, CD_FRAMESIZE, COMREAD);
-			break;
-	case CDROMREADALL:
-			retval = cdromread(argp, CD_FRAMESIZE_RAWER, COMREADALL);
-			break;
-
-	case CDROMSEEK:		retval = cdromseek(argp); break;
-	case CDROMPLAYBLK:	retval = -EINVAL; break; /* not implemented */
-	case CDROMCLOSETRAY:	break;	/* The action was taken earlier */
-	default:		retval = -EINVAL;
-	}
-	in_vfs = 0;
-	return retval;
-}
-
-
-static int open_count = 0;
-
-/* Open device special file; check that a disk is in. */
-static int opt_open(struct inode *ip, struct file *fp)
-{
-	DEBUG((DEBUG_VFS, "starting opt_open"));
-
-	if (!open_count && state == S_IDLE) {
-		int status;
-		char *buf;
-
-		buf = kmalloc(CD_FRAMESIZE_RAWER, GFP_KERNEL);
-		if (!buf) {
-			printk(KERN_INFO "optcd: cannot allocate read buffer\n");
-			return -ENOMEM;
-		}
-		optcd_disk->private_data = buf;		/* save read buffer */
-
-		toc_uptodate = 0;
-		opt_invalidate_buffers();
-
-		status = exec_cmd(COMCLOSE);	/* close door */
-		if (status < 0) {
-			DEBUG((DEBUG_VFS, "exec_cmd COMCLOSE: %02x", -status));
-		}
-
-		status = drive_status();
-		if (status < 0) {
-			DEBUG((DEBUG_VFS, "drive_status: %02x", -status));
-			goto err_out;
-		}
-		DEBUG((DEBUG_VFS, "status: %02x", status));
-		if ((status & ST_DOOR_OPEN) || (status & ST_DRVERR)) {
-			printk(KERN_INFO "optcd: no disk or door open\n");
-			goto err_out;
-		}
-		status = exec_cmd(COMLOCK);		/* Lock door */
-		if (status < 0) {
-			DEBUG((DEBUG_VFS, "exec_cmd COMLOCK: %02x", -status));
-		}
-		status = update_toc();	/* Read table of contents */
-		if (status < 0)	{
-			DEBUG((DEBUG_VFS, "update_toc: %02x", -status));
-	 		status = exec_cmd(COMUNLOCK);	/* Unlock door */
-			if (status < 0) {
-				DEBUG((DEBUG_VFS,
-				       "exec_cmd COMUNLOCK: %02x", -status));
-			}
-			goto err_out;
-		}
-		open_count++;
-	}
-
-	DEBUG((DEBUG_VFS, "exiting opt_open"));
-
-	return 0;
-
-err_out:
-	return -EIO;
-}
-
-
-/* Release device special file; flush all blocks from the buffer cache */
-static int opt_release(struct inode *ip, struct file *fp)
-{
-	int status;
-
-	DEBUG((DEBUG_VFS, "executing opt_release"));
-	DEBUG((DEBUG_VFS, "inode: %p, device: %s, file: %p\n",
-		ip, ip->i_bdev->bd_disk->disk_name, fp));
-
-	if (!--open_count) {
-		toc_uptodate = 0;
-		opt_invalidate_buffers();
-	 	status = exec_cmd(COMUNLOCK);	/* Unlock door */
-		if (status < 0) {
-			DEBUG((DEBUG_VFS, "exec_cmd COMUNLOCK: %02x", -status));
-		}
-		if (auto_eject) {
-			status = exec_cmd(COMOPEN);
-			DEBUG((DEBUG_VFS, "exec_cmd COMOPEN: %02x", -status));
-		}
-		kfree(optcd_disk->private_data);
-		del_timer(&delay_timer);
-		del_timer(&req_timer);
-	}
-	return 0;
-}
-
-
-/* Check if disk has been changed */
-static int opt_media_change(struct gendisk *disk)
-{
-	DEBUG((DEBUG_VFS, "executing opt_media_change"));
-	DEBUG((DEBUG_VFS, "dev: %s; disk_changed = %d\n",
-			disk->disk_name, disk_changed));
-
-	if (disk_changed) {
-		disk_changed = 0;
-		return 1;
-	}
-	return 0;
-}
-
-/* Driver initialisation */
-
-
-/* Returns 1 if a drive is detected with a version string
-   starting with "DOLPHIN". Otherwise 0. */
-static int __init version_ok(void)
-{
-	char devname[100];
-	int count, i, ch, status;
-
-	status = exec_cmd(COMVERSION);
-	if (status < 0) {
-		DEBUG((DEBUG_VFS, "exec_cmd COMVERSION: %02x", -status));
-		return 0;
-	}
-	if ((count = get_data(1)) < 0) {
-		DEBUG((DEBUG_VFS, "get_data(1): %02x", -count));
-		return 0;
-	}
-	for (i = 0, ch = -1; count > 0; count--) {
-		if ((ch = get_data(1)) < 0) {
-			DEBUG((DEBUG_VFS, "get_data(1): %02x", -ch));
-			break;
-		}
-		if (i < 99)
-			devname[i++] = ch;
-	}
-	devname[i] = '\0';
-	if (ch < 0)
-		return 0;
-
-	printk(KERN_INFO "optcd: Device %s detected\n", devname);
-	return ((devname[0] == 'D')
-	     && (devname[1] == 'O')
-	     && (devname[2] == 'L')
-	     && (devname[3] == 'P')
-	     && (devname[4] == 'H')
-	     && (devname[5] == 'I')
-	     && (devname[6] == 'N'));
-}
-
-
-static struct block_device_operations opt_fops = {
-	.owner		= THIS_MODULE,
-	.open		= opt_open,
-	.release	= opt_release,
-	.ioctl		= opt_ioctl,
-	.media_changed	= opt_media_change,
-};
-
-#ifndef MODULE
-/* Get kernel parameter when used as a kernel driver */
-static int optcd_setup(char *str)
-{
-	int ints[4];
-	(void)get_options(str, ARRAY_SIZE(ints), ints);
-	
-	if (ints[0] > 0)
-		optcd_port = ints[1];
-
- 	return 1;
-}
-
-__setup("optcd=", optcd_setup);
-
-#endif /* MODULE */
-
-/* Test for presence of drive and initialize it. Called at boot time
-   or during module initialisation. */
-static int __init optcd_init(void)
-{
-	int status;
-
-	if (optcd_port <= 0) {
-		printk(KERN_INFO
-			"optcd: no Optics Storage CDROM Initialization\n");
-		return -EIO;
-	}
-	optcd_disk = alloc_disk(1);
-	if (!optcd_disk) {
-		printk(KERN_ERR "optcd: can't allocate disk\n");
-		return -ENOMEM;
-	}
-	optcd_disk->major = MAJOR_NR;
-	optcd_disk->first_minor = 0;
-	optcd_disk->fops = &opt_fops;
-	sprintf(optcd_disk->disk_name, "optcd");
-
-	if (!request_region(optcd_port, 4, "optcd")) {
-		printk(KERN_ERR "optcd: conflict, I/O port 0x%x already used\n",
-			optcd_port);
-		put_disk(optcd_disk);
-		return -EIO;
-	}
-
-	if (!reset_drive()) {
-		printk(KERN_ERR "optcd: drive at 0x%x not ready\n", optcd_port);
-		release_region(optcd_port, 4);
-		put_disk(optcd_disk);
-		return -EIO;
-	}
-	if (!version_ok()) {
-		printk(KERN_ERR "optcd: unknown drive detected; aborting\n");
-		release_region(optcd_port, 4);
-		put_disk(optcd_disk);
-		return -EIO;
-	}
-	status = exec_cmd(COMINITDOUBLE);
-	if (status < 0) {
-		printk(KERN_ERR "optcd: cannot init double speed mode\n");
-		release_region(optcd_port, 4);
-		DEBUG((DEBUG_VFS, "exec_cmd COMINITDOUBLE: %02x", -status));
-		put_disk(optcd_disk);
-		return -EIO;
-	}
-	if (register_blkdev(MAJOR_NR, "optcd")) {
-		release_region(optcd_port, 4);
-		put_disk(optcd_disk);
-		return -EIO;
-	}
-
-
-	opt_queue = blk_init_queue(do_optcd_request, &optcd_lock);
-	if (!opt_queue) {
-		unregister_blkdev(MAJOR_NR, "optcd");
-		release_region(optcd_port, 4);
-		put_disk(optcd_disk);
-		return -ENOMEM;
-	}
-
-	blk_queue_hardsect_size(opt_queue, 2048);
-	optcd_disk->queue = opt_queue;
-	add_disk(optcd_disk);
-
-	printk(KERN_INFO "optcd: DOLPHIN 8000 AT CDROM at 0x%x\n", optcd_port);
-	return 0;
-}
-
-
-static void __exit optcd_exit(void)
-{
-	del_gendisk(optcd_disk);
-	put_disk(optcd_disk);
-	if (unregister_blkdev(MAJOR_NR, "optcd") == -EINVAL) {
-		printk(KERN_ERR "optcd: what's that: can't unregister\n");
-		return;
-	}
-	blk_cleanup_queue(opt_queue);
-	release_region(optcd_port, 4);
-	printk(KERN_INFO "optcd: module released.\n");
-}
-
-module_init(optcd_init);
-module_exit(optcd_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_BLOCKDEV_MAJOR(OPTICS_CDROM_MAJOR);