Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

24 files changed, 29124 insertions, 0 deletions

diff --git a/drivers/cdrom/Kconfig b/drivers/cdrom/Kconfig
new file mode 100644
index 00000000000..ff5652d4061
--- /dev/null
+++ b/drivers/cdrom/Kconfig
@@ -0,0 +1,213 @@
+#
+# CDROM driver configuration
+#
+
+menu "Old CD-ROM drivers (not SCSI, not IDE)"
+	depends on ISA
+
+config CD_NO_IDESCSI
+	bool "Support non-SCSI/IDE/ATAPI CDROM drives"
+	---help---
+	  If you have a CD-ROM drive that is neither SCSI nor IDE/ATAPI, say Y
+	  here, otherwise N. Read the CD-ROM-HOWTO, available from
+	  <http://www.tldp.org/docs.html#howto>.
+
+	  Note that the answer to this question doesn't directly affect the
+	  kernel: saying N will just cause the configurator to skip all
+	  the questions about these CD-ROM drives. If you are unsure what you
+	  have, say Y and find out whether you have one of the following
+	  drives.
+
+	  For each of these drivers, a <file:Documentation/cdrom/{driver_name}>
+	  exists. Especially in cases where you do not know exactly which kind
+	  of drive you have you should read there. Most of these drivers use a
+	  file drivers/cdrom/{driver_name}.h where you can define your
+	  interface parameters and switch some internal goodies.
+
+	  To compile these CD-ROM drivers as a module, choose M instead of Y.
+
+	  If you want to use any of these CD-ROM drivers, you also have to
+	  answer Y or M to "ISO 9660 CD-ROM file system support" below (this
+	  answer will get "defaulted" for you if you enable any of the Linux
+	  CD-ROM drivers).
+
+config AZTCD
+	tristate "Aztech/Orchid/Okano/Wearnes/TXC/CyDROM  CDROM support"
+	depends on CD_NO_IDESCSI
+	---help---
+	  This is your driver if you have an Aztech CDA268-01A, Orchid
+	  CD-3110, Okano or Wearnes CDD110, Conrad TXC, or CyCD-ROM CR520 or
+	  CR540 CD-ROM drive.  This driver -- just like all these CD-ROM
+	  drivers -- is NOT for CD-ROM drives with IDE/ATAPI interfaces, such
+	  as Aztech CDA269-031SE. Please read the file
+	  <file:Documentation/cdrom/aztcd>.
+
+	  If you say Y here, you should also say Y or M to "ISO 9660 CD-ROM
+	  file system support" below, because that's the file system used on
+	  CD-ROMs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called aztcd.
+
+config GSCD
+	tristate "Goldstar R420 CDROM support"
+	depends on CD_NO_IDESCSI
+	---help---
+	  If this is your CD-ROM drive, say Y here.  As described in the file
+	  <file:Documentation/cdrom/gscd>, you might have to change a setting
+	  in the file <file:drivers/cdrom/gscd.h> before compiling the
+	  kernel.  Please read the file <file:Documentation/cdrom/gscd>.
+
+	  If you say Y here, you should also say Y or M to "ISO 9660 CD-ROM
+	  file system support" below, because that's the file system used on
+	  CD-ROMs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called gscd.
+
+config SBPCD
+	tristate "Matsushita/Panasonic/Creative, Longshine, TEAC CDROM support"
+	depends on CD_NO_IDESCSI && BROKEN_ON_SMP
+	---help---
+	  This driver supports most of the drives which use the Panasonic or
+	  Sound Blaster interface.  Please read the file
+	  <file:Documentation/cdrom/sbpcd>.
+
+	  The Matsushita CR-521, CR-522, CR-523, CR-562, CR-563 drives
+	  (sometimes labeled "Creative"), the Creative Labs CD200, the
+	  Longshine LCS-7260, the "IBM External ISA CD-ROM" (in fact a CR-56x
+	  model), the TEAC CD-55A fall under this category.  Some other
+	  "electrically compatible" drives (Vertos, Genoa, some Funai models)
+	  are currently not supported; for the Sanyo H94A drive currently a
+	  separate driver (asked later) is responsible.  Most drives have a
+	  uniquely shaped faceplate, with a caddyless motorized drawer, but
+	  without external brand markings.  The older CR-52x drives have a
+	  caddy and manual loading/eject, but still no external markings.  The
+	  driver is able to do an extended auto-probing for interface
+	  addresses and drive types; this can help to find facts in cases you
+	  are not sure, but can consume some time during the boot process if
+	  none of the supported drives gets found.  Once your drive got found,
+	  you should enter the reported parameters into
+	  <file:drivers/cdrom/sbpcd.h> and set "DISTRIBUTION 0" there.
+
+	  This driver can support up to four CD-ROM controller cards, and each
+	  card can support up to four CD-ROM drives; if you say Y here, you
+	  will be asked how many controller cards you have.  If compiled as a
+	  module, only one controller card (but with up to four drives) is
+	  usable.
+
+	  If you say Y here, you should also say Y or M to "ISO 9660 CD-ROM
+	  file system support" below, because that's the file system used on
+	  CD-ROMs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sbpcd.
+
+config MCDX
+	tristate "Mitsumi CDROM support"
+	depends on CD_NO_IDESCSI
+	---help---
+	  Use this driver if you want to be able to use your Mitsumi LU-005,
+	  FX-001 or FX-001D CD-ROM drive.
+
+	  Please read the file <file:Documentation/cdrom/mcdx>.
+
+	  If you say Y here, you should also say Y or M to "ISO 9660 CD-ROM
+	  file system support" below, because that's the file system used on
+	  CD-ROMs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called mcdx.
+
+config OPTCD
+	tristate "Optics Storage DOLPHIN 8000AT CDROM support"
+	depends on CD_NO_IDESCSI
+	---help---
+	  This is the driver for the 'DOLPHIN' drive with a 34-pin Sony
+	  compatible interface. It also works with the Lasermate CR328A. If
+	  you have one of those, say Y. This driver does not work for the
+	  Optics Storage 8001 drive; use the IDE-ATAPI CD-ROM driver for that
+	  one. Please read the file <file:Documentation/cdrom/optcd>.
+
+	  If you say Y here, you should also say Y or M to "ISO 9660 CD-ROM
+	  file system support" below, because that's the file system used on
+	  CD-ROMs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called optcd.
+
+config CM206
+	tristate "Philips/LMS CM206 CDROM support"
+	depends on CD_NO_IDESCSI && BROKEN_ON_SMP
+	---help---
+	  If you have a Philips/LMS CD-ROM drive cm206 in combination with a
+	  cm260 host adapter card, say Y here. Please also read the file
+	  <file:Documentation/cdrom/cm206>.
+
+	  If you say Y here, you should also say Y or M to "ISO 9660 CD-ROM
+	  file system support" below, because that's the file system used on
+	  CD-ROMs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cm206.
+
+config SJCD
+	tristate "Sanyo CDR-H94A CDROM support"
+	depends on CD_NO_IDESCSI
+	help
+	  If this is your CD-ROM drive, say Y here and read the file
+	  <file:Documentation/cdrom/sjcd>. You should then also say Y or M to
+	  "ISO 9660 CD-ROM file system support" below, because that's the
+	  file system used on CD-ROMs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sjcd.
+
+config ISP16_CDI
+	tristate "ISP16/MAD16/Mozart soft configurable cdrom interface support"
+	depends on CD_NO_IDESCSI
+	---help---
+	  These are sound cards with built-in cdrom interfaces using the OPTi
+	  82C928 or 82C929 chips. Say Y here to have them detected and
+	  possibly configured at boot time. In addition, You'll have to say Y
+	  to a driver for the particular cdrom drive you have attached to the
+	  card. Read <file:Documentation/cdrom/isp16> for details.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called isp16.
+
+config CDU31A
+	tristate "Sony CDU31A/CDU33A CDROM support"
+	depends on CD_NO_IDESCSI && BROKEN_ON_SMP
+	---help---
+	  These CD-ROM drives have a spring-pop-out caddyless drawer, and a
+	  rectangular green LED centered beneath it.  NOTE: these CD-ROM
+	  drives will not be auto detected by the kernel at boot time; you
+	  have to provide the interface address as an option to the kernel at
+	  boot time as described in <file:Documentation/cdrom/cdu31a> or fill
+	  in your parameters into <file:drivers/cdrom/cdu31a.c>.  Try "man
+	  bootparam" or see the documentation of your boot loader (lilo or
+	  loadlin) about how to pass options to the kernel.
+
+	  If you say Y here, you should also say Y or M to "ISO 9660 CD-ROM
+	  file system support" below, because that's the file system used on
+	  CD-ROMs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cdu31a.
+
+config CDU535
+	tristate "Sony CDU535 CDROM support"
+	depends on CD_NO_IDESCSI
+	---help---
+	  This is the driver for the older Sony CDU-535 and CDU-531 CD-ROM
+	  drives. Please read the file <file:Documentation/cdrom/sonycd535>.
+
+	  If you say Y here, you should also say Y or M to "ISO 9660 CD-ROM
+	  file system support" below, because that's the file system used on
+	  CD-ROMs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sonycd535.
+
+endmenu
diff --git a/drivers/cdrom/Makefile b/drivers/cdrom/Makefile
new file mode 100644
index 00000000000..d1d1e5a4be7
--- /dev/null
+++ b/drivers/cdrom/Makefile
@@ -0,0 +1,23 @@
+# Makefile for the kernel cdrom device drivers.
+#
+# 30 Jan 1998, Michael Elizabeth Chastain, <mailto:mec@shout.net>
+# Rewritten to use lists instead of if-statements.
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_BLK_DEV_IDECD)	+=              cdrom.o
+obj-$(CONFIG_BLK_DEV_SR)	+=              cdrom.o
+obj-$(CONFIG_PARIDE_PCD)	+=		cdrom.o
+obj-$(CONFIG_CDROM_PKTCDVD)	+=		cdrom.o
+
+obj-$(CONFIG_AZTCD)		+= aztcd.o
+obj-$(CONFIG_CDU31A)		+= cdu31a.o     cdrom.o
+obj-$(CONFIG_CM206)		+= cm206.o      cdrom.o
+obj-$(CONFIG_GSCD)		+= gscd.o
+obj-$(CONFIG_ISP16_CDI)		+= isp16.o
+obj-$(CONFIG_MCDX)		+= mcdx.o       cdrom.o
+obj-$(CONFIG_OPTCD)		+= optcd.o
+obj-$(CONFIG_SBPCD)		+= sbpcd.o      cdrom.o
+obj-$(CONFIG_SJCD)		+= sjcd.o
+obj-$(CONFIG_CDU535)		+= sonycd535.o
+obj-$(CONFIG_VIOCD)		+= viocd.o      cdrom.o
diff --git a/drivers/cdrom/aztcd.c b/drivers/cdrom/aztcd.c
new file mode 100644
index 00000000000..43bf1e5dc38
--- /dev/null
+++ b/drivers/cdrom/aztcd.c
@@ -0,0 +1,2494 @@
+#define AZT_VERSION "2.60"
+
+/*      $Id: aztcd.c,v 2.60 1997/11/29 09:51:19 root Exp root $
+	linux/drivers/block/aztcd.c - Aztech CD268 CDROM driver
+
+	Copyright (C) 1994-98 Werner Zimmermann(Werner.Zimmermann@fht-esslingen.de)
+
+	based on Mitsumi CDROM driver by  Martin Hariss and preworks by
+	Eberhard Moenkeberg; contains contributions by Joe Nardone and Robby 
+	Schirmer.
+
+	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.
+
+	HISTORY
+	V0.0    Adaption to Aztech CD268-01A Version 1.3
+		Version is PRE_ALPHA, unresolved points:
+		1. I use busy wait instead of timer wait in STEN_LOW,DTEN_LOW
+		   thus driver causes CPU overhead and is very slow 
+		2. could not find a way to stop the drive, when it is
+		   in data read mode, therefore I had to set
+		   msf.end.min/sec/frame to 0:0:1 (in azt_poll); so only one
+		   frame can be read in sequence, this is also the reason for
+		3. getting 'timeout in state 4' messages, but nevertheless
+		   it works
+		W.Zimmermann, Oct. 31, 1994
+	V0.1    Version is ALPHA, problems #2 and #3 resolved.  
+		W.Zimmermann, Nov. 3, 1994
+	V0.2    Modification to some comments, debugging aids for partial test
+		with Borland C under DOS eliminated. Timer interrupt wait 
+		STEN_LOW_WAIT additionally to busy wait for STEN_LOW implemented; 
+		use it only for the 'slow' commands (ACMD_GET_Q_CHANNEL, ACMD_
+		SEEK_TO_LEAD_IN), all other commands are so 'fast', that busy 
+		waiting seems better to me than interrupt rescheduling.
+		Besides that, when used in the wrong place, STEN_LOW_WAIT causes
+		kernel panic.
+		In function aztPlay command ACMD_PLAY_AUDIO added, should make
+		audio functions work. The Aztech drive needs different commands
+		to read data tracks and play audio tracks.
+		W.Zimmermann, Nov. 8, 1994
+	V0.3    Recognition of missing drive during boot up improved (speeded up).
+		W.Zimmermann, Nov. 13, 1994
+	V0.35   Rewrote the control mechanism in azt_poll (formerly mcd_poll) 
+		including removal of all 'goto' commands. :-); 
+		J. Nardone, Nov. 14, 1994
+	V0.4    Renamed variables and constants to 'azt' instead of 'mcd'; had
+		to make some "compatibility" defines in azt.h; please note,
+		that the source file was renamed to azt.c, the include file to
+		azt.h                
+		Speeded up drive recognition during init (will be a little bit 
+		slower than before if no drive is installed!); suggested by
+		Robby Schirmer.
+		read_count declared volatile and set to AZT_BUF_SIZ to make
+		drive faster (now 300kB/sec, was 60kB/sec before, measured
+		by 'time dd if=/dev/cdrom of=/dev/null bs=2048 count=4096';
+		different AZT_BUF_SIZes were test, above 16 no further im-
+		provement seems to be possible; suggested by E.Moenkeberg.
+		W.Zimmermann, Nov. 18, 1994
+	V0.42   Included getAztStatus command in GetQChannelInfo() to allow
+		reading Q-channel info on audio disks, if drive is stopped, 
+		and some other bug fixes in the audio stuff, suggested by 
+		Robby Schirmer.
+		Added more ioctls (reading data in mode 1 and mode 2).
+		Completely removed the old azt_poll() routine.
+		Detection of ORCHID CDS-3110 in aztcd_init implemented.
+		Additional debugging aids (see the readme file).
+		W.Zimmermann, Dec. 9, 1994  
+	V0.50   Autodetection of drives implemented.
+		W.Zimmermann, Dec. 12, 1994
+	V0.52   Prepared for including in the standard kernel, renamed most
+		variables to contain 'azt', included autoconf.h
+		W.Zimmermann, Dec. 16, 1994        
+	V0.6    Version for being included in the standard Linux kernel.
+		Renamed source and header file to aztcd.c and aztcd.h
+		W.Zimmermann, Dec. 24, 1994
+	V0.7    Changed VERIFY_READ to VERIFY_WRITE in aztcd_ioctl, case
+		CDROMREADMODE1 and CDROMREADMODE2; bug fix in the ioctl,
+		which causes kernel crashes when playing audio, changed 
+		include-files (config.h instead of autoconf.h, removed
+		delay.h)
+		W.Zimmermann, Jan. 8, 1995
+	V0.72   Some more modifications for adaption to the standard kernel.
+		W.Zimmermann, Jan. 16, 1995
+        V0.80   aztcd is now part of the standard kernel since version 1.1.83.
+                Modified the SET_TIMER and CLEAR_TIMER macros to comply with
+                the new timer scheme.
+                W.Zimmermann, Jan. 21, 1995
+        V0.90   Included CDROMVOLCTRL, but with my Aztech drive I can only turn
+                the channels on and off. If it works better with your drive, 
+                please mail me. Also implemented ACMD_CLOSE for CDROMSTART.
+                W.Zimmermann, Jan. 24, 1995
+        V1.00   Implemented close and lock tray commands. Patches supplied by
+		Frank Racis        
+                Added support for loadable MODULEs, so aztcd can now also be
+                loaded by insmod and removed by rmmod during run time
+                Werner Zimmermann, Mar. 24, 95
+        V1.10   Implemented soundcard configuration for Orchid CDS-3110 drives
+                connected to Soundwave32 cards. Release for LST 2.1.
+                (still experimental)
+                Werner Zimmermann, May 8, 95
+        V1.20   Implemented limited support for DOSEMU0.60's cdrom.c. Now it works, but
+                sometimes DOSEMU may hang for 30 seconds or so. A fully functional ver-
+                sion needs an update of Dosemu0.60's cdrom.c, which will come with the 
+                next revision of Dosemu.
+                Also Soundwave32 support now works.
+                Werner Zimmermann, May 22, 95
+	V1.30   Auto-eject feature. Inspired by Franc Racis (racis@psu.edu)
+	        Werner Zimmermann, July 4, 95
+	V1.40   Started multisession support. Implementation copied from mcdx.c
+	        by Heiko Schlittermann. Not tested yet.
+	        Werner Zimmermann, July 15, 95
+        V1.50   Implementation of ioctl CDROMRESET, continued multisession, began
+                XA, but still untested. Heavy modifications to drive status de-
+                tection.
+                Werner Zimmermann, July 25, 95
+        V1.60   XA support now should work. Speeded up drive recognition in cases, 
+                where no drive is installed.
+                Werner Zimmermann, August 8, 1995
+        V1.70   Multisession support now is completed, but there is still not 
+                enough testing done. If you can test it, please contact me. For
+                details please read Documentation/cdrom/aztcd
+                Werner Zimmermann, August 19, 1995
+        V1.80   Modification to suit the new kernel boot procedure introduced
+                with kernel 1.3.33. Will definitely not work with older kernels.
+                Programming done by Linus himself.
+                Werner Zimmermann, October 11, 1995
+	V1.90   Support for Conrad TXC drives, thank's to Jochen Kunz and Olaf Kaluza.
+	        Werner Zimmermann, October 21, 1995
+        V2.00   Changed #include "blk.h" to <linux/blk.h> as the directory
+                structure was changed. README.aztcd is now /usr/src/docu-
+                mentation/cdrom/aztcd
+                Werner Zimmermann, November 10, 95
+        V2.10   Started to modify azt_poll to prevent reading beyond end of
+                tracks.
+                Werner Zimmermann, December 3, 95
+        V2.20   Changed some comments
+                Werner Zimmermann, April 1, 96
+        V2.30   Implemented support for CyCDROM CR520, CR940, Code for CR520 
+        	delivered by H.Berger with preworks by E.Moenkeberg.
+                Werner Zimmermann, April 29, 96
+        V2.40   Reorganized the placement of functions in the source code file
+                to reflect the layered approach; did not actually change code
+                Werner Zimmermann, May 1, 96
+        V2.50   Heiko Eissfeldt suggested to remove some VERIFY_READs in 
+                aztcd_ioctl; check_aztcd_media_change modified 
+                Werner Zimmermann, May 16, 96       
+	V2.60   Implemented Auto-Probing; made changes for kernel's 2.1.xx blocksize
+                Adaption to linux kernel > 2.1.0
+		Werner Zimmermann, Nov 29, 97
+		
+        November 1999 -- 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>
+*/
+
+#include <linux/blkdev.h>
+#include "aztcd.h"
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/timer.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/cdrom.h>
+#include <linux/ioport.h>
+#include <linux/string.h>
+#include <linux/major.h>
+
+#include <linux/init.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include <asm/uaccess.h>
+
+/*###########################################################################
+  Defines
+  ###########################################################################
+*/
+
+#define MAJOR_NR AZTECH_CDROM_MAJOR
+#define QUEUE (azt_queue)
+#define CURRENT elv_next_request(azt_queue)
+#define SET_TIMER(func, jifs)   delay_timer.expires = jiffies + (jifs); \
+                                delay_timer.function = (void *) (func); \
+                                add_timer(&delay_timer);
+
+#define CLEAR_TIMER             del_timer(&delay_timer);
+
+#define RETURNM(message,value) {printk("aztcd: Warning: %s failed\n",message);\
+                                return value;}
+#define RETURN(message)        {printk("aztcd: Warning: %s failed\n",message);\
+                                return;}
+
+/* Macros to switch the IDE-interface to the slave device and back to the master*/
+#define SWITCH_IDE_SLAVE  outb_p(0xa0,azt_port+6); \
+	                  outb_p(0x10,azt_port+6); \
+	                  outb_p(0x00,azt_port+7); \
+	                  outb_p(0x10,azt_port+6);
+#define SWITCH_IDE_MASTER outb_p(0xa0,azt_port+6);
+
+
+#if 0
+#define AZT_TEST
+#define AZT_TEST1		/* <int-..> */
+#define AZT_TEST2		/* do_aztcd_request */
+#define AZT_TEST3		/* AZT_S_state */
+#define AZT_TEST4		/* QUICK_LOOP-counter */
+#define AZT_TEST5		/* port(1) state */
+#define AZT_DEBUG
+#define AZT_DEBUG_MULTISESSION
+#endif
+
+static struct request_queue *azt_queue;
+
+static int current_valid(void)
+{
+        return CURRENT &&
+		CURRENT->cmd == READ &&
+		CURRENT->sector != -1;
+}
+
+#define AFL_STATUSorDATA (AFL_STATUS | AFL_DATA)
+#define AZT_BUF_SIZ 16
+
+#define READ_TIMEOUT 3000
+
+#define azt_port aztcd		/*needed for the modutils */
+
+/*##########################################################################
+  Type Definitions
+  ##########################################################################
+*/
+enum azt_state_e { AZT_S_IDLE,	/* 0 */
+	AZT_S_START,		/* 1 */
+	AZT_S_MODE,		/* 2 */
+	AZT_S_READ,		/* 3 */
+	AZT_S_DATA,		/* 4 */
+	AZT_S_STOP,		/* 5 */
+	AZT_S_STOPPING		/* 6 */
+};
+enum azt_read_modes { AZT_MODE_0,	/*read mode for audio disks, not supported by Aztech firmware */
+	AZT_MODE_1,		/*read mode for normal CD-ROMs */
+	AZT_MODE_2		/*read mode for XA CD-ROMs */
+};
+
+/*##########################################################################
+  Global Variables
+  ##########################################################################
+*/
+static int aztPresent = 0;
+
+static volatile int azt_transfer_is_active = 0;
+
+static char azt_buf[CD_FRAMESIZE_RAW * AZT_BUF_SIZ];	/*buffer for block size conversion */
+#if AZT_PRIVATE_IOCTLS
+static char buf[CD_FRAMESIZE_RAW];	/*separate buffer for the ioctls */
+#endif
+
+static volatile int azt_buf_bn[AZT_BUF_SIZ], azt_next_bn;
+static volatile int azt_buf_in, azt_buf_out = -1;
+static volatile int azt_error = 0;
+static int azt_open_count = 0;
+static volatile enum azt_state_e azt_state = AZT_S_IDLE;
+#ifdef AZT_TEST3
+static volatile enum azt_state_e azt_state_old = AZT_S_STOP;
+static volatile int azt_st_old = 0;
+#endif
+static volatile enum azt_read_modes azt_read_mode = AZT_MODE_1;
+
+static int azt_mode = -1;
+static volatile int azt_read_count = 1;
+
+static int azt_port = AZT_BASE_ADDR;
+
+module_param(azt_port, int, 0);
+
+static int azt_port_auto[16] = AZT_BASE_AUTO;
+
+static char azt_cont = 0;
+static char azt_init_end = 0;
+static char azt_auto_eject = AZT_AUTO_EJECT;
+
+static int AztTimeout, AztTries;
+static DECLARE_WAIT_QUEUE_HEAD(azt_waitq);
+static struct timer_list delay_timer = TIMER_INITIALIZER(NULL, 0, 0);
+
+static struct azt_DiskInfo DiskInfo;
+static struct azt_Toc Toc[MAX_TRACKS];
+static struct azt_Play_msf azt_Play;
+
+static int aztAudioStatus = CDROM_AUDIO_NO_STATUS;
+static char aztDiskChanged = 1;
+static char aztTocUpToDate = 0;
+
+static unsigned char aztIndatum;
+static unsigned long aztTimeOutCount;
+static int aztCmd = 0;
+
+static DEFINE_SPINLOCK(aztSpin);
+
+/*###########################################################################
+   Function Prototypes
+  ###########################################################################
+*/
+/* CDROM Drive Low Level I/O Functions */
+static void aztStatTimer(void);
+
+/* CDROM Drive Command Functions */
+static int aztGetDiskInfo(void);
+#if AZT_MULTISESSION
+static int aztGetMultiDiskInfo(void);
+#endif
+static int aztGetToc(int multi);
+
+/* Kernel Interface Functions */
+static int check_aztcd_media_change(struct gendisk *disk);
+static int aztcd_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
+		       unsigned long arg);
+static int aztcd_open(struct inode *ip, struct file *fp);
+static int aztcd_release(struct inode *inode, struct file *file);
+
+static struct block_device_operations azt_fops = {
+	.owner		= THIS_MODULE,
+	.open		= aztcd_open,
+	.release	= aztcd_release,
+	.ioctl		= aztcd_ioctl,
+	.media_changed	= check_aztcd_media_change,
+};
+
+/* Aztcd State Machine: Controls Drive Operating State */
+static void azt_poll(void);
+
+/* Miscellaneous support functions */
+static void azt_hsg2msf(long hsg, struct msf *msf);
+static long azt_msf2hsg(struct msf *mp);
+static void azt_bin2bcd(unsigned char *p);
+static int azt_bcd2bin(unsigned char bcd);
+
+/*##########################################################################
+  CDROM Drive Low Level I/O Functions
+  ##########################################################################
+*/
+/* Macros for the drive hardware interface handshake, these macros use
+   busy waiting */
+/* Wait for OP_OK = drive answers with AFL_OP_OK after receiving a command*/
+# define OP_OK op_ok()
+static void op_ok(void)
+{
+	aztTimeOutCount = 0;
+	do {
+		aztIndatum = inb(DATA_PORT);
+		aztTimeOutCount++;
+		if (aztTimeOutCount >= AZT_TIMEOUT) {
+			printk("aztcd: Error Wait OP_OK\n");
+			break;
+		}
+	} while (aztIndatum != AFL_OP_OK);
+}
+
+/* Wait for PA_OK = drive answers with AFL_PA_OK after receiving parameters*/
+#if 0
+# define PA_OK pa_ok()
+static void pa_ok(void)
+{
+	aztTimeOutCount = 0;
+	do {
+		aztIndatum = inb(DATA_PORT);
+		aztTimeOutCount++;
+		if (aztTimeOutCount >= AZT_TIMEOUT) {
+			printk("aztcd: Error Wait PA_OK\n");
+			break;
+		}
+	} while (aztIndatum != AFL_PA_OK);
+}
+#endif
+
+/* Wait for STEN=Low = handshake signal 'AFL_.._OK available or command executed*/
+# define STEN_LOW  sten_low()
+static void sten_low(void)
+{
+	aztTimeOutCount = 0;
+	do {
+		aztIndatum = inb(STATUS_PORT);
+		aztTimeOutCount++;
+		if (aztTimeOutCount >= AZT_TIMEOUT) {
+			if (azt_init_end)
+				printk
+				    ("aztcd: Error Wait STEN_LOW commands:%x\n",
+				     aztCmd);
+			break;
+		}
+	} while (aztIndatum & AFL_STATUS);
+}
+
+/* Wait for DTEN=Low = handshake signal 'Data available'*/
+# define DTEN_LOW dten_low()
+static void dten_low(void)
+{
+	aztTimeOutCount = 0;
+	do {
+		aztIndatum = inb(STATUS_PORT);
+		aztTimeOutCount++;
+		if (aztTimeOutCount >= AZT_TIMEOUT) {
+			printk("aztcd: Error Wait DTEN_OK\n");
+			break;
+		}
+	} while (aztIndatum & AFL_DATA);
+}
+
+/* 
+ * Macro for timer wait on STEN=Low, should only be used for 'slow' commands;
+ * may cause kernel panic when used in the wrong place
+*/
+#define STEN_LOW_WAIT   statusAzt()
+static void statusAzt(void)
+{
+	AztTimeout = AZT_STATUS_DELAY;
+	SET_TIMER(aztStatTimer, HZ / 100);
+	sleep_on(&azt_waitq);
+	if (AztTimeout <= 0)
+		printk("aztcd: Error Wait STEN_LOW_WAIT command:%x\n",
+		       aztCmd);
+	return;
+}
+
+static void aztStatTimer(void)
+{
+	if (!(inb(STATUS_PORT) & AFL_STATUS)) {
+		wake_up(&azt_waitq);
+		return;
+	}
+	AztTimeout--;
+	if (AztTimeout <= 0) {
+		wake_up(&azt_waitq);
+		printk("aztcd: Error aztStatTimer: Timeout\n");
+		return;
+	}
+	SET_TIMER(aztStatTimer, HZ / 100);
+}
+
+/*##########################################################################
+  CDROM Drive Command Functions
+  ##########################################################################
+*/
+/* 
+ * Send a single command, return -1 on error, else 0
+*/
+static int aztSendCmd(int cmd)
+{
+	unsigned char data;
+	int retry;
+
+#ifdef AZT_DEBUG
+	printk("aztcd: Executing command %x\n", cmd);
+#endif
+
+	if ((azt_port == 0x1f0) || (azt_port == 0x170))
+		SWITCH_IDE_SLAVE;	/*switch IDE interface to slave configuration */
+
+	aztCmd = cmd;
+	outb(POLLED, MODE_PORT);
+	do {
+		if (inb(STATUS_PORT) & AFL_STATUS)
+			break;
+		inb(DATA_PORT);	/* if status left from last command, read and */
+	} while (1);		/* discard it */
+	do {
+		if (inb(STATUS_PORT) & AFL_DATA)
+			break;
+		inb(DATA_PORT);	/* if data left from last command, read and */
+	} while (1);		/* discard it */
+	for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) {
+		outb((unsigned char) cmd, CMD_PORT);
+		STEN_LOW;
+		data = inb(DATA_PORT);
+		if (data == AFL_OP_OK) {
+			return 0;
+		}		/*OP_OK? */
+		if (data == AFL_OP_ERR) {
+			STEN_LOW;
+			data = inb(DATA_PORT);
+			printk
+			    ("### Error 1 aztcd: aztSendCmd %x  Error Code %x\n",
+			     cmd, data);
+		}
+	}
+	if (retry >= AZT_RETRY_ATTEMPTS) {
+		printk("### Error 2 aztcd: aztSendCmd %x \n", cmd);
+		azt_error = 0xA5;
+	}
+	RETURNM("aztSendCmd", -1);
+}
+
+/*
+ * Send a play or read command to the drive, return -1 on error, else 0
+*/
+static int sendAztCmd(int cmd, struct azt_Play_msf *params)
+{
+	unsigned char data;
+	int retry;
+
+#ifdef AZT_DEBUG
+	printk("aztcd: play start=%02x:%02x:%02x  end=%02x:%02x:%02x\n",
+	       params->start.min, params->start.sec, params->start.frame,
+	       params->end.min, params->end.sec, params->end.frame);
+#endif
+	for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) {
+		aztSendCmd(cmd);
+		outb(params->start.min, CMD_PORT);
+		outb(params->start.sec, CMD_PORT);
+		outb(params->start.frame, CMD_PORT);
+		outb(params->end.min, CMD_PORT);
+		outb(params->end.sec, CMD_PORT);
+		outb(params->end.frame, CMD_PORT);
+		STEN_LOW;
+		data = inb(DATA_PORT);
+		if (data == AFL_PA_OK) {
+			return 0;
+		}		/*PA_OK ? */
+		if (data == AFL_PA_ERR) {
+			STEN_LOW;
+			data = inb(DATA_PORT);
+			printk
+			    ("### Error 1 aztcd: sendAztCmd %x  Error Code %x\n",
+			     cmd, data);
+		}
+	}
+	if (retry >= AZT_RETRY_ATTEMPTS) {
+		printk("### Error 2 aztcd: sendAztCmd %x\n ", cmd);
+		azt_error = 0xA5;
+	}
+	RETURNM("sendAztCmd", -1);
+}
+
+/*
+ * Send a seek command to the drive, return -1 on error, else 0
+*/
+static int aztSeek(struct azt_Play_msf *params)
+{
+	unsigned char data;
+	int retry;
+
+#ifdef AZT_DEBUG
+	printk("aztcd: aztSeek %02x:%02x:%02x\n",
+	       params->start.min, params->start.sec, params->start.frame);
+#endif
+	for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) {
+		aztSendCmd(ACMD_SEEK);
+		outb(params->start.min, CMD_PORT);
+		outb(params->start.sec, CMD_PORT);
+		outb(params->start.frame, CMD_PORT);
+		STEN_LOW;
+		data = inb(DATA_PORT);
+		if (data == AFL_PA_OK) {
+			return 0;
+		}		/*PA_OK ? */
+		if (data == AFL_PA_ERR) {
+			STEN_LOW;
+			data = inb(DATA_PORT);
+			printk("### Error 1 aztcd: aztSeek\n");
+		}
+	}
+	if (retry >= AZT_RETRY_ATTEMPTS) {
+		printk("### Error 2 aztcd: aztSe