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sbpcd.c
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/*
* sbpcd.c CD-ROM device driver for the whole family of traditional,
* non-ATAPI IDE-style Matsushita/Panasonic CR-5xx drives.
* Works with SoundBlaster compatible cards and with "no-sound"
* interface cards like Lasermate, Panasonic CI-101P, Teac, ...
* Also for the Longshine LCS-7260 drive.
* Also for the IBM "External ISA CD-Rom" drive.
* Also for the CreativeLabs CD200 drive.
* Also for the TEAC CD-55A drive.
* Also for the ECS-AT "Vertos 100" drive.
* Not for Sanyo drives (but for the H94A, sjcd is there...).
* Not for any other Funai drives than the CD200 types (sometimes
* labelled E2550UA or MK4015 or 2800F).
*/
#define VERSION "v4.63 Andrew J. Kroll <[email protected]> Wed Jul 26 04:24:10 EDT 2000"
/* Copyright (C) 1993, 1994, 1995 Eberhard Moenkeberg <[email protected]>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* (for example /usr/src/linux/COPYING); if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* If you change this software, you should mail a .diff file with some
* description lines to [email protected]. I want to know about it.
*
* If you are the editor of a Linux CD, you should enable sbpcd.c within
* your boot floppy kernel and send me one of your CDs for free.
*
* If you would like to port the driver to an other operating system (f.e.
* FreeBSD or NetBSD) or use it as an information source, you shall not be
* restricted by the GPL under the following conditions:
* a) the source code of your work is freely available
* b) my part of the work gets mentioned at all places where your
* authorship gets mentioned
* c) I receive a copy of your code together with a full installation
* package of your operating system for free.
*
*
* VERSION HISTORY
*
* 0.1 initial release, April/May 93, after mcd.c (Martin Harriss)
*
* 0.2 thek "repeat:"-loop in do_sbpcd_request did not check for
* end-of-request_queue (resulting in kernel panic).
* Flow control seems stable, but throughput is not better.
*
* 0.3 interrupt locking totally eliminated (maybe "inb" and "outb"
* are still locking) - 0.2 made keyboard-type-ahead losses.
* check_sbpcd_media_change added (to use by isofs/inode.c)
* - but it detects almost nothing.
*
* 0.4 use MAJOR 25 definitely.
* Almost total re-design to support double-speed drives and
* "naked" (no sound) interface cards ("LaserMate" interface type).
* Flow control should be exact now.
* Don't occupy the SbPro IRQ line (not needed either); will
* live together with Hannu Savolainen's sndkit now.
* Speeded up data transfer to 150 kB/sec, with help from Kai
* Makisara, the "provider" of the "mt" tape utility.
* Give "SpinUp" command if necessary.
* First steps to support up to 4 drives (but currently only one).
* Implemented audio capabilities - workman should work, xcdplayer
* gives some problems.
* This version is still consuming too much CPU time, and
* sleeping still has to be worked on.
* During "long" implied seeks, it seems possible that a
* ReadStatus command gets ignored. That gives the message
* "ResponseStatus timed out" (happens about 6 times here during
* a "ls -alR" of the YGGDRASIL LGX-Beta CD). Such a case is
* handled without data error, but it should get done better.
*
* 0.5 Free CPU during waits (again with help from Kai Makisara).
* Made it work together with the LILO/kernel setup standard.
* Included auto-probing code, as suggested by YGGDRASIL.
* Formal redesign to add DDI debugging.
* There are still flaws in IOCTL (workman with double speed drive).
*
* 1.0 Added support for all drive IDs (0...3, no longer only 0)
* and up to 4 drives on one controller.
* Added "#define MANY_SESSION" for "old" multi session CDs.
*
* 1.1 Do SpinUp for new drives, too.
* Revised for clean compile under "old" kernels (0.99pl9).
*
* 1.2 Found the "workman with double-speed drive" bug: use the driver's
* audio_state, not what the drive is reporting with ReadSubQ.
*
* 1.3 Minor cleanups.
* Refinements regarding Workman.
*
* 1.4 Read XA disks (PhotoCDs) with "old" drives, too (but only the first
* session - no chance to fully access a "multi-session" CD).
* This currently still is too slow (50 kB/sec) - but possibly
* the old drives won't do it faster.
* Implemented "door (un)lock" for new drives (still does not work
* as wanted - no lock possible after an unlock).
* Added some debugging printout for the UPC/EAN code - but my drives
* return only zeroes. Is there no UPC/EAN code written?
*
* 1.5 Laborate with UPC/EAN code (not better yet).
* Adapt to kernel 1.1.8 change (have to explicitly include
* <linux/string.h> now).
*
* 1.6 Trying to read audio frames as data. Impossible with the current
* drive firmware levels, as it seems. Awaiting any hint. ;-)
* Changed "door unlock": repeat it until success.
* Changed CDROMSTOP routine (stop somewhat "softer" so that Workman
* won't get confused).
* Added a third interface type: Sequoia S-1000, as used with the SPEA
* Media FX sound card. This interface (usable for Sony and Mitsumi
* drives, too) needs a special configuration setup and behaves like a
* LaserMate type after that. Still experimental - I do not have such
* an interface.
* Use the "variable BLOCK_SIZE" feature (2048). But it does only work
* if you give the mount option "block=2048".
* The media_check routine is currently disabled; now that it gets
* called as it should I fear it must get synchronized for not to
* disturb the normal driver's activity.
*
* 2.0 Version number bumped - two reasons:
* - reading audio tracks as data works now with CR-562 and CR-563. We
* currently do it by an IOCTL (yet has to get standardized), one frame
* at a time; that is pretty slow. But it works.
* - we are maintaining now up to 4 interfaces (each up to 4 drives):
* did it the easy way - a different MAJOR (25, 26, ...) and a different
* copy of the driver (sbpcd.c, sbpcd2.c, sbpcd3.c, sbpcd4.c - only
* distinguished by the value of SBPCD_ISSUE and the driver's name),
* and a common sbpcd.h file.
* Bettered the "ReadCapacity error" problem with old CR-52x drives (the
* drives sometimes need a manual "eject/insert" before work): just
* reset the drive and do again. Needs lots of resets here and sometimes
* that does not cure, so this can't be the solution.
*
* 2.1 Found bug with multisession CDs (accessing frame 16).
* "read audio" works now with address type CDROM_MSF, too.
* Bigger audio frame buffer: allows reading max. 4 frames at time; this
* gives a significant speedup, but reading more than one frame at once
* gives missing chunks at each single frame boundary.
*
* 2.2 Kernel interface cleanups: timers, init, setup, media check.
*
* 2.3 Let "door lock" and "eject" live together.
* Implemented "close tray" (done automatically during open).
*
* 2.4 Use different names for device registering.
*
* 2.5 Added "#if EJECT" code (default: enabled) to automatically eject
* the tray during last call to "sbpcd_release".
* Added "#if JUKEBOX" code (default: disabled) to automatically eject
* the tray during call to "sbpcd_open" if no disk is in.
* Turn on the CD volume of "compatible" sound cards, too; just define
* SOUND_BASE (in sbpcd.h) accordingly (default: disabled).
*
* 2.6 Nothing new.
*
* 2.7 Added CDROMEJECT_SW ioctl to set the "EJECT" behavior on the fly:
* 0 disables, 1 enables auto-ejecting. Useful to keep the tray in
* during shutdown.
*
* 2.8 Added first support (still BETA, I need feedback or a drive) for
* the Longshine LCS-7260 drives. They appear as double-speed drives
* using the "old" command scheme, extended by tray control and door
* lock functions.
* Found (and fixed preliminary) a flaw with some multisession CDs: we
* have to re-direct not only the accesses to frame 16 (the isofs
* routines drive it up to max. 100), but also those to the continuation
* (repetition) frames (as far as they exist - currently set fix as
* 16..20).
* Changed default of the "JUKEBOX" define. If you use this default,
* your tray will eject if you try to mount without a disk in. Next
* mount command will insert the tray - so, just fill in a disk. ;-)
*
* 2.9 Fulfilled the Longshine LCS-7260 support; with great help and
* experiments by Serge Robyns.
* First attempts to support the TEAC CD-55A drives; but still not
* usable yet.
* Implemented the CDROMMULTISESSION ioctl; this is an attempt to handle
* multi session CDs more "transparent" (redirection handling has to be
* done within the isofs routines, and only for the special purpose of
* obtaining the "right" volume descriptor; accesses to the raw device
* should not get redirected).
*
* 3.0 Just a "normal" increment, with some provisions to do it better. ;-)
* Introduced "#define READ_AUDIO" to specify the maximum number of
* audio frames to grab with one request. This defines a buffer size
* within kernel space; a value of 0 will reserve no such space and
* disable the CDROMREADAUDIO ioctl. A value of 75 enables the reading
* of a whole second with one command, but will use a buffer of more
* than 172 kB.
* Started CD200 support. Drive detection should work, but nothing
* more.
*
* 3.1 Working to support the CD200 and the Teac CD-55A drives.
* AT-BUS style device numbering no longer used: use SCSI style now.
* So, the first "found" device has MINOR 0, regardless of the
* jumpered drive ID. This implies modifications to the /dev/sbpcd*
* entries for some people, but will help the DAU (german TLA, english:
* "newbie", maybe ;-) to install his "first" system from a CD.
*
* 3.2 Still testing with CD200 and CD-55A drives.
*
* 3.3 Working with CD200 support.
*
* 3.4 Auto-probing stops if an address of 0 is seen (to be entered with
* the kernel command line).
* Made the driver "loadable". If used as a module, "audio copy" is
* disabled, and the internal read ahead data buffer has a reduced size
* of 4 kB; so, throughput may be reduced a little bit with slow CPUs.
*
* 3.5 Provisions to handle weird photoCDs which have an interrupted
* "formatting" immediately after the last frames of some files: simply
* never "read ahead" with MultiSession CDs. By this, CPU usage may be
* increased with those CDs, and there may be a loss in speed.
* Re-structured the messaging system.
* The "loadable" version no longer has a limited READ_AUDIO buffer
* size.
* Removed "MANY_SESSION" handling for "old" multi session CDs.
* Added "private" IOCTLs CDROMRESET and CDROMVOLREAD.
* Started again to support the TEAC CD-55A drives, now that I found
* the money for "my own" drive. ;-)
* The TEAC CD-55A support is fairly working now.
* I have measured that the drive "delivers" at 600 kB/sec (even with
* bigger requests than the drive's 64 kB buffer can satisfy), but
* the "real" rate does not exceed 520 kB/sec at the moment.
* Caused by the various changes to build in TEAC support, the timed
* loops are de-optimized at the moment (less throughput with CR-52x
* drives, and the TEAC will give speed only with SBP_BUFFER_FRAMES 64).
*
* 3.6 Fixed TEAC data read problems with SbPro interfaces.
* Initial size of the READ_AUDIO buffer is 0. Can get set to any size
* during runtime.
*
* 3.7 Introduced MAX_DRIVES for some poor interface cards (seen with TEAC
* drives) which allow only one drive (ID 0); this avoids repetitive
* detection under IDs 1..3.
* Elongated cmd_out_T response waiting; necessary for photo CDs with
* a lot of sessions.
* Bettered the sbpcd_open() behavior with TEAC drives.
*
* 3.8 Elongated max_latency for CR-56x drives.
*
* 3.9 Finally fixed the long-known SoundScape/SPEA/Sequoia S-1000 interface
* configuration bug.
* Now Corey, Heiko, Ken, Leo, Vadim/Eric & Werner are invited to copy
* the config_spea() routine into their drivers. ;-)
*
* 4.0 No "big step" - normal version increment.
* Adapted the benefits from 1.3.33.
* Fiddled with CDROMREADAUDIO flaws.
* Avoid ReadCapacity command with CD200 drives (the MKE 1.01 version
* seems not to support it).
* Fulfilled "read audio" for CD200 drives, with help of Pete Heist
* ([email protected]).
*
* 4.1 Use loglevel KERN_INFO with printk().
* Added support for "Vertos 100" drive ("ECS-AT") - it is very similar
* to the Longshine LCS-7260. Give feedback if you can - I never saw
* such a drive, and I have no specs.
*
* 4.2 Support for Teac 16-bit interface cards. Can't get auto-detected,
* so you have to jumper your card to 0x2C0. Still not 100% - come
* in contact if you can give qualified feedback.
* Use loglevel KERN_NOTICE with printk(). If you get annoyed by a
* flood of unwanted messages and the accompanied delay, try to read
* my documentation. Especially the Linux CDROM drivers have to do an
* important job for the newcomers, so the "distributed" version has
* to fit some special needs. Since generations, the flood of messages
* is user-configurable (even at runtime), but to get aware of this, one
* needs a special mental quality: the ability to read.
*
* 4.3 CD200F does not like to receive a command while the drive is
* reading the ToC; still trying to solve it.
* Removed some redundant verify_area calls (yes, Heiko Eissfeldt
* is visiting all the Linux CDROM drivers ;-).
*
* 4.4 Adapted one idea from [email protected]'s "stripping-down"
* experiments: "KLOGD_PAUSE".
* Inhibited "play audio" attempts with data CDs. Provisions for a
* "data-safe" handling of "mixed" (data plus audio) Cds.
*
* 4.5 Meanwhile Gonzalo Tornaria <[email protected]> (GTL) built a
* special end_request routine: we seem to have to take care for not
* to have two processes working at the request list. My understanding
* was and is that ll_rw_blk should not call do_sbpcd_request as long
* as there is still one call active (the first call will care for all
* outstanding I/Os, and if a second call happens, that is a bug in
* ll_rw_blk.c).
* "Check media change" without touching any drive.
*
* 4.6 Use a semaphore to synchronize multi-activity; elaborated by Rob
* Riggs <[email protected]>. At the moment, we simply block "read"
* against "ioctl" and vice versa. This could be refined further, but
* I guess with almost no performance increase.
* Experiments to speed up the CD-55A; again with help of Rob Riggs
* (to be true, he gave both, idea & code. ;-)
*
* 4.61 Ported to Uniform CD-ROM driver by
* Heiko Eissfeldt <[email protected]> with additional
* changes by Erik Andersen <[email protected]>
*
* 4.62 Fix a bug where playing audio left the drive in an unusable state.
* Heiko Eissfeldt <[email protected]>
*
* 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 <[email protected]>
*
* 4.63 Bug fixes for audio annoyances, new legacy CDROM maintainer.
* Annoying things fixed:
* TOC reread on automated disk changes
* TOC reread on manual cd changes
* Play IOCTL tries to play CD before it's actually ready... sometimes.
* CD_AUDIO_COMPLETED state so workman (and other playes) can repeat play.
* Andrew J. Kroll <[email protected]> Wed Jul 26 04:24:10 EDT 2000
*
* 4.64 Fix module parameters - were being completely ignored.
* Can also specify max_drives=N as a setup int to get rid of
* "ghost" drives on crap hardware (aren't they all?) Paul Gortmaker
*
* TODO
* implement "read all subchannel data" (96 bytes per frame)
* remove alot of the virtual status bits and deal with hardware status
* move the change of cd for audio to a better place
* add debug levels to insmod parameters (trivial)
*
* special thanks to Kai Makisara ([email protected]) for his fine
* elaborated speed-up experiments (and the fabulous results!), for
* the "push" towards load-free wait loops, and for the extensive mail
* thread which brought additional hints and bug fixes.
*
*/
/*
* Trying to merge requests breaks this driver horribly (as in it goes
* boom and apparently has done so since 2.3.41). As it is a legacy
* driver for a horribly slow double speed CD on a hideous interface
* designed for polled operation, I won't lose any sleep in simply
* disallowing merging. Paul G. 02/2001
*
* Thu May 30 14:14:47 CEST 2002:
*
* I have presumably found the reson for the above - there was a bogous
* end_request substitute, which was manipulating the request queues
* incorrectly. If someone has access to the actual hardware, and it's
* still operations - well please free to test it.
*
* Marcin Dalecki
*/
/*
* Add bio/kdev_t changes for 2.5.x required to make it work again.
* Still room for improvement in the request handling here if anyone
* actually cares. Bring your own chainsaw. Paul G. 02/2002
*/
#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/devfs_fs_kernel.h>
#include <linux/major.h>
#include <linux/string.h>
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <stdarg.h>
#include <linux/config.h>
#include "sbpcd.h"
#define MAJOR_NR MATSUSHITA_CDROM_MAJOR
#include <linux/blkdev.h>
/*==========================================================================*/
#if SBPCD_DIS_IRQ
# define SBPCD_CLI cli()
# define SBPCD_STI sti()
#else
# define SBPCD_CLI
# define SBPCD_STI
#endif
/*==========================================================================*/
/*
* auto-probing address list
* inspired by Adam J. Richter from Yggdrasil
*
* still not good enough - can cause a hang.
* example: a NE 2000 ethernet card at 300 will cause a hang probing 310.
* if that happens, reboot and use the LILO (kernel) command line.
* The possibly conflicting ethernet card addresses get NOT probed
* by default - to minimize the hang possibilities.
*
* The SB Pro addresses get "mirrored" at 0x6xx and some more locations - to
* avoid a type error, the 0x2xx-addresses must get checked before 0x6xx.
*
* send mail to [email protected] if your interface card is not FULLY
* represented here.
*/
static int sbpcd[] =
{
CDROM_PORT, SBPRO, /* probe with user's setup first */
#if DISTRIBUTION
0x230, 1, /* Soundblaster Pro and 16 (default) */
#if 0
0x300, 0, /* CI-101P (default), WDH-7001C (default),
Galaxy (default), Reveal (one default) */
0x250, 1, /* OmniCD default, Soundblaster Pro and 16 */
0x2C0, 3, /* Teac 16-bit cards */
0x260, 1, /* OmniCD */
0x320, 0, /* Lasermate, CI-101P, WDH-7001C, Galaxy, Reveal (other default),
Longshine LCS-6853 (default) */
0x338, 0, /* Reveal Sound Wave 32 card model #SC600 */
0x340, 0, /* Mozart sound card (default), Lasermate, CI-101P */
0x360, 0, /* Lasermate, CI-101P */
0x270, 1, /* Soundblaster 16 */
0x670, 0, /* "sound card #9" */
0x690, 0, /* "sound card #9" */
0x338, 2, /* SPEA Media FX, Ensonic SoundScape (default) */
0x328, 2, /* SPEA Media FX */
0x348, 2, /* SPEA Media FX */
0x634, 0, /* some newer sound cards */
0x638, 0, /* some newer sound cards */
0x230, 1, /* some newer sound cards */
/* due to incomplete address decoding of the SbPro card, these must be last */
0x630, 0, /* "sound card #9" (default) */
0x650, 0, /* "sound card #9" */
#ifdef MODULE
/*
* some "hazardous" locations (no harm with the loadable version)
* (will stop the bus if a NE2000 ethernet card resides at offset -0x10)
*/
0x330, 0, /* Lasermate, CI-101P, WDH-7001C */
0x350, 0, /* Lasermate, CI-101P */
0x358, 2, /* SPEA Media FX */
0x370, 0, /* Lasermate, CI-101P */
0x290, 1, /* Soundblaster 16 */
0x310, 0, /* Lasermate, CI-101P, WDH-7001C */
#endif /* MODULE */
#endif
#endif /* DISTRIBUTION */
};
/*
* Protects access to global structures etc.
*/
static __cacheline_aligned DEFINE_SPINLOCK(sbpcd_lock);
static struct request_queue *sbpcd_queue;
MODULE_PARM(sbpcd, "2i");
MODULE_PARM(max_drives, "i");
#define NUM_PROBE (sizeof(sbpcd) / sizeof(int))
/*==========================================================================*/
#define INLINE inline
/*==========================================================================*/
/*
* the forward references:
*/
static void sbp_sleep(u_int);
static void mark_timeout_delay(u_long);
static void mark_timeout_data(u_long);
#if 0
static void mark_timeout_audio(u_long);
#endif
static void sbp_read_cmd(struct request *req);
static int sbp_data(struct request *req);
static int cmd_out(void);
static int DiskInfo(void);
/*==========================================================================*/
/*
* pattern for printk selection:
*
* (1<<DBG_INF) necessary information
* (1<<DBG_BSZ) BLOCK_SIZE trace
* (1<<DBG_REA) "read" status trace
* (1<<DBG_CHK) "media check" trace
* (1<<DBG_TIM) datarate timer test
* (1<<DBG_INI) initialization trace
* (1<<DBG_TOC) tell TocEntry values
* (1<<DBG_IOC) ioctl trace
* (1<<DBG_STA) "ResponseStatus" trace
* (1<<DBG_ERR) "cc_ReadError" trace
* (1<<DBG_CMD) "cmd_out" trace
* (1<<DBG_WRN) give explanation before auto-probing
* (1<<DBG_MUL) multi session code test
* (1<<DBG_IDX) "drive_id != 0" test code
* (1<<DBG_IOX) some special information
* (1<<DBG_DID) drive ID test
* (1<<DBG_RES) drive reset info
* (1<<DBG_SPI) SpinUp test info
* (1<<DBG_IOS) ioctl trace: "subchannel"
* (1<<DBG_IO2) ioctl trace: general
* (1<<DBG_UPC) show UPC info
* (1<<DBG_XA1) XA mode debugging
* (1<<DBG_LCK) door (un)lock info
* (1<<DBG_SQ1) dump SubQ frame
* (1<<DBG_AUD) "read audio" debugging
* (1<<DBG_SEQ) Sequoia interface configuration trace
* (1<<DBG_LCS) Longshine LCS-7260 debugging trace
* (1<<DBG_CD2) MKE/Funai CD200 debugging trace
* (1<<DBG_TEA) TEAC CD-55A debugging trace
* (1<<DBG_ECS) ECS-AT (Vertos-100) debugging trace
* (1<<DBG_000) unnecessary information
*/
#if DISTRIBUTION
static int sbpcd_debug = (1<<DBG_INF);
#else
static int sbpcd_debug = 0 & ((1<<DBG_INF) |
(1<<DBG_TOC) |
(1<<DBG_MUL) |
(1<<DBG_UPC));
#endif /* DISTRIBUTION */
static int sbpcd_ioaddr = CDROM_PORT; /* default I/O base address */
static int sbpro_type = SBPRO;
static unsigned char f_16bit;
static unsigned char do_16bit;
static int CDo_command, CDo_reset;
static int CDo_sel_i_d, CDo_enable;
static int CDi_info, CDi_status, CDi_data;
static struct cdrom_msf msf;
static struct cdrom_ti ti;
static struct cdrom_tochdr tochdr;
static struct cdrom_tocentry tocentry;
static struct cdrom_subchnl SC;
static struct cdrom_volctrl volctrl;
static struct cdrom_read_audio read_audio;
static unsigned char msgnum;
static char msgbuf[80];
static int max_drives = MAX_DRIVES;
#ifndef MODULE
static unsigned char setup_done;
static const char *str_sb_l = "soundblaster";
static const char *str_sp_l = "spea";
static const char *str_ss_l = "soundscape";
static const char *str_t16_l = "teac16bit";
static const char *str_ss = "SoundScape";
#endif
static const char *str_sb = "SoundBlaster";
static const char *str_lm = "LaserMate";
static const char *str_sp = "SPEA";
static const char *str_t16 = "Teac16bit";
static const char *type;
static const char *major_name="sbpcd";
/*==========================================================================*/
#ifdef FUTURE
static DECLARE_WAIT_QUEUE_HEAD(sbp_waitq);
#endif /* FUTURE */
static int teac=SBP_TEAC_SPEED;
static int buffers=SBP_BUFFER_FRAMES;
static u_char family0[]="MATSHITA"; /* MKE CR-521, CR-522, CR-523 */
static u_char family1[]="CR-56"; /* MKE CR-562, CR-563 */
static u_char family2[]="CD200"; /* MKE CD200, Funai CD200F */
static u_char familyL[]="LCS-7260"; /* Longshine LCS-7260 */
static u_char familyT[]="CD-55"; /* TEAC CD-55A */
static u_char familyV[]="ECS-AT"; /* ECS Vertos 100 */
static u_int recursion; /* internal testing only */
static u_int fatal_err; /* internal testing only */
static u_int response_count;
static u_int flags_cmd_out;
static u_char cmd_type;
static u_char drvcmd[10];
static u_char infobuf[20];
static u_char xa_head_buf[CD_XA_HEAD];
static u_char xa_tail_buf[CD_XA_TAIL];
#if OLD_BUSY
static volatile u_char busy_data;
static volatile u_char busy_audio; /* true semaphores would be safer */
#endif /* OLD_BUSY */
static DECLARE_MUTEX(ioctl_read_sem);
static u_long timeout;
static volatile u_char timed_out_delay;
static volatile u_char timed_out_data;
#if 0
static volatile u_char timed_out_audio;
#endif
static u_int datarate= 1000000;
static u_int maxtim16=16000000;
static u_int maxtim04= 4000000;
static u_int maxtim02= 2000000;
static u_int maxtim_8= 30000;
#if LONG_TIMING
static u_int maxtim_data= 9000;
#else
static u_int maxtim_data= 3000;
#endif /* LONG_TIMING */
#if DISTRIBUTION
static int n_retries=6;
#else
static int n_retries=6;
#endif
/*==========================================================================*/
static int ndrives;
static u_char drv_pattern[NR_SBPCD]={speed_auto,speed_auto,speed_auto,speed_auto};
/*==========================================================================*/
/*
* drive space begins here (needed separate for each unit)
*/
static struct sbpcd_drive {
char drv_id; /* "jumpered" drive ID or -1 */
char drv_sel; /* drive select lines bits */
char drive_model[9];
u_char firmware_version[4];
char f_eject; /* auto-eject flag: 0 or 1 */
u_char *sbp_buf; /* Pointer to internal data buffer,
space allocated during sbpcd_init() */
u_int sbp_bufsiz; /* size of sbp_buf (# of frames) */
int sbp_first_frame; /* First frame in buffer */
int sbp_last_frame; /* Last frame in buffer */
int sbp_read_frames; /* Number of frames being read to buffer */
int sbp_current; /* Frame being currently read */
u_char mode; /* read_mode: READ_M1, READ_M2, READ_SC, READ_AU */
u_char *aud_buf; /* Pointer to audio data buffer,
space allocated during sbpcd_init() */
u_int sbp_audsiz; /* size of aud_buf (# of raw frames) */
u_int drv_type;
u_char drv_options;
int status_bits;
u_char diskstate_flags;
u_char sense_byte;
u_char CD_changed;
char open_count;
u_char error_byte;
u_char f_multisession;
u_int lba_multi;
int first_session;
int last_session;
int track_of_last_session;
u_char audio_state;
u_int pos_audio_start;
u_int pos_audio_end;
char vol_chan0;
u_char vol_ctrl0;
char vol_chan1;
u_char vol_ctrl1;
#if 000 /* no supported drive has it */
char vol_chan2;
u_char vol_ctrl2;
char vol_chan3;
u_char vol_ctrl3;
#endif /*000 */
u_char volume_control; /* TEAC on/off bits */
u_char SubQ_ctl_adr;
u_char SubQ_trk;
u_char SubQ_pnt_idx;
u_int SubQ_run_tot;
u_int SubQ_run_trk;
u_char SubQ_whatisthis;
u_char UPC_ctl_adr;
u_char UPC_buf[7];
int frame_size;
int CDsize_frm;
u_char xa_byte; /* 0x20: XA capabilities */
u_char n_first_track; /* binary */
u_char n_last_track; /* binary (not bcd), 0x01...0x63 */
u_int size_msf; /* time of whole CD, position of LeadOut track */
u_int size_blk;
u_char TocEnt_nixbyte; /* em */
u_char TocEnt_ctl_adr;
u_char TocEnt_number;
u_char TocEnt_format; /* em */
u_int TocEnt_address;
#ifdef SAFE_MIXED
char has_data;
#endif /* SAFE_MIXED */
u_char ored_ctl_adr; /* to detect if CDROM contains data tracks */
struct {
u_char nixbyte; /* em */
u_char ctl_adr; /* 0x4x: data, 0x0x: audio */
u_char number;
u_char format; /* em */ /* 0x00: lba, 0x01: msf */
u_int address;
} TocBuffer[MAX_TRACKS+1]; /* last entry faked */
int in_SpinUp; /* CR-52x test flag */
int n_bytes; /* TEAC awaited response count */
u_char error_state, b3, b4; /* TEAC command error state */
u_char f_drv_error; /* TEAC command error flag */
u_char speed_byte;
int frmsiz;
u_char f_XA; /* 1: XA */
u_char type_byte; /* 0, 1, 3 */
u_char mode_xb_6;
u_char mode_yb_7;
u_char mode_xb_8;
u_char delay;
struct cdrom_device_info *sbpcd_infop;
struct gendisk *disk;
} D_S[NR_SBPCD];
static struct sbpcd_drive *current_drive = D_S;
/*
* drive space ends here (needed separate for each unit)
*/
/*==========================================================================*/
#if 0
unsigned long cli_sti; /* for saving the processor flags */
#endif
/*==========================================================================*/
static DEFINE_TIMER(delay_timer, mark_timeout_delay, 0, 0);
static DEFINE_TIMER(data_timer, mark_timeout_data, 0, 0);
#if 0
static DEFINE_TIMER(audio_timer, mark_timeout_audio, 0, 0);
#endif
/*==========================================================================*/
/*
* DDI interface
*/
static void msg(int level, const char *fmt, ...)
{
#if DISTRIBUTION
#define MSG_LEVEL KERN_NOTICE
#else
#define MSG_LEVEL KERN_INFO
#endif /* DISTRIBUTION */
char buf[256];
va_list args;
if (!(sbpcd_debug&(1<<level))) return;
msgnum++;
if (msgnum>99) msgnum=0;
sprintf(buf, MSG_LEVEL "%s-%d [%02d]: ", major_name, current_drive - D_S, msgnum);
va_start(args, fmt);
vsprintf(&buf[18], fmt, args);
va_end(args);
printk(buf);
#if KLOGD_PAUSE
sbp_sleep(KLOGD_PAUSE); /* else messages get lost */
#endif /* KLOGD_PAUSE */
return;
}
/*==========================================================================*/
/*
* DDI interface: runtime trace bit pattern maintenance
*/
static int sbpcd_dbg_ioctl(unsigned long arg, int level)
{
switch(arg)
{
case 0: /* OFF */
sbpcd_debug = DBG_INF;
break;
default:
if (arg>=128) sbpcd_debug &= ~(1<<(arg-128));
else sbpcd_debug |= (1<<arg);
}
return (arg);
}
/*==========================================================================*/
static void mark_timeout_delay(u_long i)
{
timed_out_delay=1;
#if 0
msg(DBG_TIM,"delay timer expired.\n");
#endif
}
/*==========================================================================*/
static void mark_timeout_data(u_long i)
{
timed_out_data=1;
#if 0
msg(DBG_TIM,"data timer expired.\n");
#endif
}
/*==========================================================================*/
#if 0
static void mark_timeout_audio(u_long i)
{
timed_out_audio=1;
#if 0
msg(DBG_TIM,"audio timer expired.\n");
#endif
}
#endif
/*==========================================================================*/
/*
* Wait a little while (used for polling the drive).
*/
static void sbp_sleep(u_int time)
{
sti();
schedule_timeout_interruptible(time);
sti();
}
/*==========================================================================*/
#define RETURN_UP(rc) {up(&ioctl_read_sem); return(rc);}
/*==========================================================================*/
/*
* convert logical_block_address to m-s-f_number (3 bytes only)
*/
static INLINE void lba2msf(int lba, u_char *msf)
{
lba += CD_MSF_OFFSET;
msf[0] = lba / (CD_SECS*CD_FRAMES);
lba %= CD_SECS*CD_FRAMES;
msf[1] = lba / CD_FRAMES;
msf[2] = lba % CD_FRAMES;
}
/*==========================================================================*/
/*==========================================================================*/
/*
* convert msf-bin to msf-bcd
*/
static INLINE void bin2bcdx(u_char *p) /* must work only up to 75 or 99 */
{
*p=((*p/10)<<4)|(*p%10);
}
/*==========================================================================*/
static INLINE u_int blk2msf(u_int blk)
{
MSF msf;
u_int mm;
msf.c[3] = 0;
msf.c[2] = (blk + CD_MSF_OFFSET) / (CD_SECS * CD_FRAMES);
mm = (blk + CD_MSF_OFFSET) % (CD_SECS * CD_FRAMES);
msf.c[1] = mm / CD_FRAMES;
msf.c[0] = mm % CD_FRAMES;
return (msf.n);
}
/*==========================================================================*/
static INLINE u_int make16(u_char rh, u_char rl)
{
return ((rh<<8)|rl);
}
/*==========================================================================*/
static INLINE u_int make32(u_int rh, u_int rl)
{
return ((rh<<16)|rl);
}
/*==========================================================================*/
static INLINE u_char swap_nibbles(u_char i)
{
return ((i<<4)|(i>>4));
}
/*==========================================================================*/
static INLINE u_char byt2bcd(u_char i)
{
return (((i/10)<<4)+i%10);
}
/*==========================================================================*/
static INLINE u_char bcd2bin(u_char bcd)
{
return ((bcd>>4)*10+(bcd&0x0F));
}
/*==========================================================================*/
static INLINE int msf2blk(int msfx)
{
MSF msf;
int i;
msf.n=msfx;
i=(msf.c[2] * CD_SECS + msf.c[1]) * CD_FRAMES + msf.c[0] - CD_MSF_OFFSET;
if (i<0) return (0);
return (i);
}
/*==========================================================================*/
/*
* convert m-s-f_number (3 bytes only) to logical_block_address
*/
static INLINE int msf2lba(u_char *msf)
{
int i;
i=(msf[0] * CD_SECS + msf[1]) * CD_FRAMES + msf[2] - CD_MSF_OFFSET;
if (i<0) return (0);
return (i);
}
/*==========================================================================*/
/* evaluate cc_ReadError code */
static int sta2err(int sta)
{
if (famT_drive)
{
if (sta==0x00) return (0);
if (sta==0x01) return (-604); /* CRC error */
if (sta==0x02) return (-602); /* drive not ready */
if (sta==0x03) return (-607); /* unknown media */
if (sta==0x04) return (-612); /* general failure */
if (sta==0x05) return (0);
if (sta==0x06) return (-ERR_DISKCHANGE); /* disk change */
if (sta==0x0b) return (-612); /* general failure */
if (sta==0xff) return (-612); /* general failure */
return (0);
}
else
{
if (sta<=2) return (sta);
if (sta==0x05) return (-604); /* CRC error */
if (sta==0x06) return (-606); /* seek error */
if (sta==0x0d) return (-606); /* seek error */
if (sta==0x0e) return (-603); /* unknown command */
if (sta==0x14) return (-603); /* unknown command */
if (sta==0x0c) return (-611); /* read fault */
if (sta==0x0f) return (-611); /* read fault */
if (sta==0x10) return (-611); /* read fault */
if (sta>=0x16) return (-612); /* general failure */
if (sta==0x11) return (-ERR_DISKCHANGE); /* disk change (LCS: removed) */
if (famL_drive)
if (sta==0x12) return (-ERR_DISKCHANGE); /* disk change (inserted) */
return (-602); /* drive not ready */
}
}
/*==========================================================================*/
static INLINE void clr_cmdbuf(void)
{
int i;
for (i=0;i<10;i++) drvcmd[i]=0;
cmd_type=0;
}
/*==========================================================================*/
static void flush_status(void)
{
int i;
sbp_sleep(15*HZ/10);
for (i=maxtim_data;i!=0;i--) inb(CDi_status);
}
/*====================================================================*/
/*
* CDi status loop for Teac CD-55A (Rob Riggs)
*
* This is needed because for some strange reason
* the CD-55A can take a real long time to give a
* status response. This seems to happen after we
* issue a READ command where a long seek is involved.
*
* I tried to ensure that we get max throughput with
* minimal busy waiting. We busy wait at first, then
* "switch gears" and start sleeping. We sleep for
* longer periods of time the longer we wait.
*
*/
static int CDi_stat_loop_T(void)
{
int i, gear=1;
u_long timeout_1, timeout_2, timeout_3, timeout_4;
timeout_1 = jiffies + HZ / 50; /* sbp_sleep(0) for a short period */
timeout_2 = jiffies + HZ / 5; /* nap for no more than 200ms */
timeout_3 = jiffies + 5 * HZ; /* sleep for up to 5s */
timeout_4 = jiffies + 45 * HZ; /* long sleep for up to 45s. */
do
{
i = inb(CDi_status);
if (!(i&s_not_data_ready)) return (i);
if (!(i&s_not_result_ready)) return (i);
switch(gear)
{
case 4:
sbp_sleep(HZ);