patch-2.3.99-pre1 linux/drivers/block/ide-cd.c
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- Lines: 2730
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.3.51/linux/drivers/block/ide-cd.c
- Orig date:
Tue Mar 7 14:32:25 2000
diff -u --recursive --new-file v2.3.51/linux/drivers/block/ide-cd.c linux/drivers/block/ide-cd.c
@@ -1,2729 +0,0 @@
-/*
- * linux/drivers/block/ide-cd.c
- * Copyright (C) 1994, 1995, 1996 scott snyder <snyder@fnald0.fnal.gov>
- * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
- * Copyright (C) 1998, 1999 Jens Axboe <axboe@image.dk>
- *
- * May be copied or modified under the terms of the GNU General Public
- * License. See linux/COPYING for more information.
- *
- * ATAPI CD-ROM driver. To be used with ide.c.
- * See Documentation/cdrom/ide-cd for usage information.
- *
- * Suggestions are welcome. Patches that work are more welcome though. ;-)
- * For those wishing to work on this driver, please be sure you download
- * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI
- * (SFF-8020i rev 2.6) standards. These documents can be obtained by
- * anonymous ftp from:
- * ftp://fission.dt.wdc.com/pub/standards/SFF/specs/INF-8020.PDF
- * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r01.pdf
- *
- * Drives that deviate from these standards will be accomodated as much
- * as possible via compile time or command-line options. Since I only have
- * a few drives, you generally need to send me patches...
- *
- * ----------------------------------
- * TO DO LIST:
- * -Make it so that Pioneer CD DR-A24X and friends don't get screwed up on
- * boot
- *
- * ----------------------------------
- * 1.00 Oct 31, 1994 -- Initial version.
- * 1.01 Nov 2, 1994 -- Fixed problem with starting request in
- * cdrom_check_status.
- * 1.03 Nov 25, 1994 -- leaving unmask_intr[] as a user-setting (as for disks)
- * (from mlord) -- minor changes to cdrom_setup()
- * -- renamed ide_dev_s to ide_drive_t, enable irq on command
- * 2.00 Nov 27, 1994 -- Generalize packet command interface;
- * add audio ioctls.
- * 2.01 Dec 3, 1994 -- Rework packet command interface to handle devices
- * which send an interrupt when ready for a command.
- * 2.02 Dec 11, 1994 -- Cache the TOC in the driver.
- * Don't use SCMD_PLAYAUDIO_TI; it's not included
- * in the current version of ATAPI.
- * Try to use LBA instead of track or MSF addressing
- * when possible.
- * Don't wait for READY_STAT.
- * 2.03 Jan 10, 1995 -- Rewrite block read routines to handle block sizes
- * other than 2k and to move multiple sectors in a
- * single transaction.
- * 2.04 Apr 21, 1995 -- Add work-around for Creative Labs CD220E drives.
- * Thanks to Nick Saw <cwsaw@pts7.pts.mot.com> for
- * help in figuring this out. Ditto for Acer and
- * Aztech drives, which seem to have the same problem.
- * 2.04b May 30, 1995 -- Fix to match changes in ide.c version 3.16 -ml
- * 2.05 Jun 8, 1995 -- Don't attempt to retry after an illegal request
- * or data protect error.
- * Use HWIF and DEV_HWIF macros as in ide.c.
- * Always try to do a request_sense after
- * a failed command.
- * Include an option to give textual descriptions
- * of ATAPI errors.
- * Fix a bug in handling the sector cache which
- * showed up if the drive returned data in 512 byte
- * blocks (like Pioneer drives). Thanks to
- * Richard Hirst <srh@gpt.co.uk> for diagnosing this.
- * Properly supply the page number field in the
- * MODE_SELECT command.
- * PLAYAUDIO12 is broken on the Aztech; work around it.
- * 2.05x Aug 11, 1995 -- lots of data structure renaming/restructuring in ide.c
- * (my apologies to Scott, but now ide-cd.c is independent)
- * 3.00 Aug 22, 1995 -- Implement CDROMMULTISESSION ioctl.
- * Implement CDROMREADAUDIO ioctl (UNTESTED).
- * Use input_ide_data() and output_ide_data().
- * Add door locking.
- * Fix usage count leak in cdrom_open, which happened
- * when a read-write mount was attempted.
- * Try to load the disk on open.
- * Implement CDROMEJECT_SW ioctl (off by default).
- * Read total cdrom capacity during open.
- * Rearrange logic in cdrom_decode_status. Issue
- * request sense commands for failed packet commands
- * from here instead of from cdrom_queue_packet_command.
- * Fix a race condition in retrieving error information.
- * Suppress printing normal unit attention errors and
- * some drive not ready errors.
- * Implement CDROMVOLREAD ioctl.
- * Implement CDROMREADMODE1/2 ioctls.
- * Fix race condition in setting up interrupt handlers
- * when the `serialize' option is used.
- * 3.01 Sep 2, 1995 -- Fix ordering of reenabling interrupts in
- * cdrom_queue_request.
- * Another try at using ide_[input,output]_data.
- * 3.02 Sep 16, 1995 -- Stick total disk capacity in partition table as well.
- * Make VERBOSE_IDE_CD_ERRORS dump failed command again.
- * Dump out more information for ILLEGAL REQUEST errs.
- * Fix handling of errors occurring before the
- * packet command is transferred.
- * Fix transfers with odd bytelengths.
- * 3.03 Oct 27, 1995 -- Some Creative drives have an id of just `CD'.
- * `DCI-2S10' drives are broken too.
- * 3.04 Nov 20, 1995 -- So are Vertos drives.
- * 3.05 Dec 1, 1995 -- Changes to go with overhaul of ide.c and ide-tape.c
- * 3.06 Dec 16, 1995 -- Add support needed for partitions.
- * More workarounds for Vertos bugs (based on patches
- * from Holger Dietze <dietze@aix520.informatik.uni-leipzig.de>).
- * Try to eliminate byteorder assumptions.
- * Use atapi_cdrom_subchnl struct definition.
- * Add STANDARD_ATAPI compilation option.
- * 3.07 Jan 29, 1996 -- More twiddling for broken drives: Sony 55D,
- * Vertos 300.
- * Add NO_DOOR_LOCKING configuration option.
- * Handle drive_cmd requests w/NULL args (for hdparm -t).
- * Work around sporadic Sony55e audio play problem.
- * 3.07a Feb 11, 1996 -- check drive->id for NULL before dereferencing, to fix
- * problem with "hde=cdrom" with no drive present. -ml
- * 3.08 Mar 6, 1996 -- More Vertos workarounds.
- * 3.09 Apr 5, 1996 -- Add CDROMCLOSETRAY ioctl.
- * Switch to using MSF addressing for audio commands.
- * Reformat to match kernel tabbing style.
- * Add CDROM_GET_UPC ioctl.
- * 3.10 Apr 10, 1996 -- Fix compilation error with STANDARD_ATAPI.
- * 3.11 Apr 29, 1996 -- Patch from Heiko Eissfeldt <heiko@colossus.escape.de>
- * to remove redundant verify_area calls.
- * 3.12 May 7, 1996 -- Rudimentary changer support. Based on patches
- * from Gerhard Zuber <zuber@berlin.snafu.de>.
- * Let open succeed even if there's no loaded disc.
- * 3.13 May 19, 1996 -- Fixes for changer code.
- * 3.14 May 29, 1996 -- Add work-around for Vertos 600.
- * (From Hennus Bergman <hennus@sky.ow.nl>.)
- * 3.15 July 2, 1996 -- Added support for Sanyo 3 CD changers
- * from Ben Galliart <bgallia@luc.edu> with
- * special help from Jeff Lightfoot
- * <jeffml@pobox.com>
- * 3.15a July 9, 1996 -- Improved Sanyo 3 CD changer identification
- * 3.16 Jul 28, 1996 -- Fix from Gadi to reduce kernel stack usage for ioctl.
- * 3.17 Sep 17, 1996 -- Tweak audio reads for some drives.
- * Start changing CDROMLOADFROMSLOT to CDROM_SELECT_DISC.
- * 3.18 Oct 31, 1996 -- Added module and DMA support.
- *
- *
- * 4.00 Nov 5, 1996 -- New ide-cd maintainer,
- * Erik B. Andersen <andersee@debian.org>
- * -- Newer Creative drives don't always set the error
- * register correctly. Make sure we see media changes
- * regardless.
- * -- Integrate with generic cdrom driver.
- * -- CDROMGETSPINDOWN and CDROMSETSPINDOWN ioctls, based on
- * a patch from Ciro Cattuto <>.
- * -- Call set_device_ro.
- * -- Implement CDROMMECHANISMSTATUS and CDROMSLOTTABLE
- * ioctls, based on patch by Erik Andersen
- * -- Add some probes of drive capability during setup.
- *
- * 4.01 Nov 11, 1996 -- Split into ide-cd.c and ide-cd.h
- * -- Removed CDROMMECHANISMSTATUS and CDROMSLOTTABLE
- * ioctls in favor of a generalized approach
- * using the generic cdrom driver.
- * -- Fully integrated with the 2.1.X kernel.
- * -- Other stuff that I forgot (lots of changes)
- *
- * 4.02 Dec 01, 1996 -- Applied patch from Gadi Oxman <gadio@netvision.net.il>
- * to fix the drive door locking problems.
- *
- * 4.03 Dec 04, 1996 -- Added DSC overlap support.
- * 4.04 Dec 29, 1996 -- Added CDROMREADRAW ioclt based on patch
- * by Ales Makarov (xmakarov@sun.felk.cvut.cz)
- *
- * 4.05 Nov 20, 1997 -- Modified to print more drive info on init
- * Minor other changes
- * Fix errors on CDROMSTOP (If you have a "Dolphin",
- * you must define IHAVEADOLPHIN)
- * Added identifier so new Sanyo CD-changer works
- * Better detection if door locking isn't supported
- *
- * 4.06 Dec 17, 1997 -- fixed endless "tray open" messages -ml
- * 4.07 Dec 17, 1997 -- fallback to set pc->stat on "tray open"
- * 4.08 Dec 18, 1997 -- spew less noise when tray is empty
- * -- fix speed display for ACER 24X, 18X
- * 4.09 Jan 04, 1998 -- fix handling of the last block so we return
- * an end of file instead of an I/O error (Gadi)
- * 4.10 Jan 24, 1998 -- fixed a bug so now changers can change to a new
- * slot when there is no disc in the current slot.
- * -- Fixed a memory leak where info->changer_info was
- * malloc'ed but never free'd when closing the device.
- * -- Cleaned up the global namespace a bit by making more
- * functions static that should already have been.
- * 4.11 Mar 12, 1998 -- Added support for the CDROM_SELECT_SPEED ioctl
- * based on a patch for 2.0.33 by Jelle Foks
- * <jelle@scintilla.utwente.nl>, a patch for 2.0.33
- * by Toni Giorgino <toni@pcape2.pi.infn.it>, the SCSI
- * version, and my own efforts. -erik
- * -- Fixed a stupid bug which egcs was kind enough to
- * inform me of where "Illegal mode for this track"
- * was never returned due to a comparison on data
- * types of limited range.
- * 4.12 Mar 29, 1998 -- Fixed bug in CDROM_SELECT_SPEED so write speed is
- * now set ionly for CD-R and CD-RW drives. I had
- * removed this support because it produced errors.
- * It produced errors _only_ for non-writers. duh.
- * 4.13 May 05, 1998 -- Suppress useless "in progress of becoming ready"
- * messages, since this is not an error.
- * -- Change error messages to be const
- * -- Remove a "\t" which looks ugly in the syslogs
- * 4.14 July 17, 1998 -- Change to pointing to .ps version of ATAPI spec
- * since the .pdf version doesn't seem to work...
- * -- Updated the TODO list to something more current.
- *
- * 4.15 Aug 25, 1998 -- Updated ide-cd.h to respect mechine endianess,
- * patch thanks to "Eddie C. Dost" <ecd@skynet.be>
- *
- * 4.50 Oct 19, 1998 -- New maintainers!
- * Jens Axboe <axboe@image.dk>
- * Chris Zwilling <chris@cloudnet.com>
- *
- * 4.51 Dec 23, 1998 -- Jens Axboe <axboe@image.dk>
- * - ide_cdrom_reset enabled since the ide subsystem
- * handles resets fine now. <axboe@image.dk>
- * - Transfer size fix for Samsung CD-ROMs, thanks to
- * "Ville Hallik" <ville.hallik@mail.ee>.
- * - other minor stuff.
- *
- * 4.52 Jan 19, 1999 -- Jens Axboe <axboe@image.dk>
- * - Detect DVD-ROM/RAM drives
- *
- * 4.53 Feb 22, 1999 - Include other model Samsung and one Goldstar
- * drive in transfer size limit.
- * - Fix the I/O error when doing eject without a medium
- * loaded on some drives.
- * - CDROMREADMODE2 is now implemented through
- * CDROMREADRAW, since many drives don't support
- * MODE2 (even though ATAPI 2.6 says they must).
- * - Added ignore parameter to ide-cd (as a module), eg
- * insmod ide-cd ignore='hda hdb'
- * Useful when using ide-cd in conjunction with
- * ide-scsi. TODO: non-modular way of doing the
- * same.
- *
- * 4.54 Aug 5, 1999 - Support for MMC2 class commands through the generic
- * packet interface to cdrom.c.
- * - Unified audio ioctl support, most of it.
- * - cleaned up various deprecated verify_area().
- * - Added ide_cdrom_packet() as the interface for
- * the Uniform generic_packet().
- * - bunch of other stuff, will fill in logs later.
- * - report 1 slot for non-changers, like the other
- * cd-rom drivers. don't report select disc for
- * non-changers as well.
- * - mask out audio playing, if the device can't do it.
- *
- * 4.55 Sep 1, 1999 - Eliminated the rest of the audio ioctls, except
- * for CDROMREADTOC[ENTRY|HEADER]. Some of the drivers
- * use this independently of the actual audio handling.
- * They will disappear later when I get the time to
- * do it cleanly.
- * - Minimize the TOC reading - only do it when we
- * know a media change has occured.
- * - Moved all the CDROMREADx ioctls to the Uniform layer.
- * - Heiko Eissfeldt <heiko@colossus.escape.de> supplied
- * some fixes for CDI.
- * - CD-ROM leaving door locked fix from Andries
- * Brouwer <Andries.Brouwer@cwi.nl>
- * - Erik Andersen <andersen@xmission.com> unified
- * commands across the various drivers and how
- * sense errors are handled.
- *
- * 4.56 Sep 12, 1999 - Removed changer support - it is now in the
- * Uniform layer.
- * - Added partition based multisession handling.
- * - Mode sense and mode select moved to the
- * Uniform layer.
- * - Fixed a problem with WPI CDS-32X drive - it
- * failed the capabilities
- *
- *
- *************************************************************************/
-
-#define IDECD_VERSION "4.56"
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/malloc.h>
-#include <linux/interrupt.h>
-#include <linux/errno.h>
-#include <linux/cdrom.h>
-#include <linux/ide.h>
-
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/byteorder.h>
-#include <asm/uaccess.h>
-#include <asm/unaligned.h>
-
-#include "ide-cd.h"
-
-/****************************************************************************
- * Generic packet command support and error handling routines.
- */
-
-/* Mark that we've seen a media change, and invalidate our internal
- buffers. */
-static void cdrom_saw_media_change (ide_drive_t *drive)
-{
- struct cdrom_info *info = drive->driver_data;
-
- CDROM_STATE_FLAGS (drive)->media_changed = 1;
- CDROM_STATE_FLAGS (drive)->toc_valid = 0;
- info->nsectors_buffered = 0;
-}
-
-
-static
-void cdrom_analyze_sense_data (ide_drive_t *drive, struct request_sense *reqbuf,
- struct packet_command *failed_command)
-{
- if (reqbuf->sense_key == NOT_READY ||
- reqbuf->sense_key == UNIT_ATTENTION) {
- /* Make good and sure we've seen this potential media change.
- Some drives (i.e. Creative) fail to present the correct
- sense key in the error register. */
- cdrom_saw_media_change (drive);
-
-
- /* Don't print not ready or unit attention errors for
- READ_SUBCHANNEL. Workman (and probably other programs)
- uses this command to poll the drive, and we don't want
- to fill the syslog with useless errors. */
- if (failed_command &&
- failed_command->c[0] == GPCMD_READ_SUBCHANNEL)
- return;
- }
-
- if (reqbuf->error_code == 0x70 && reqbuf->sense_key == 0x02
- && ((reqbuf->asc == 0x3a && reqbuf->ascq == 0x00) ||
- (reqbuf->asc == 0x04 && reqbuf->ascq == 0x01)))
- {
- /*
- * Suppress the following errors:
- * "Medium not present", "in progress of becoming ready",
- * and "writing" to keep the noise level down to a dull roar.
- */
- return;
- }
-
-#if VERBOSE_IDE_CD_ERRORS
- {
- int i;
- const char *s;
- char buf[80];
-
- printk ("ATAPI device %s:\n", drive->name);
- if (reqbuf->error_code==0x70)
- printk(" Error: ");
- else if (reqbuf->error_code==0x71)
- printk(" Deferred Error: ");
- else
- printk(" Unknown Error Type: ");
-
- if ( reqbuf->sense_key < ARY_LEN (sense_key_texts))
- s = sense_key_texts[reqbuf->sense_key];
- else
- s = "bad sense key!";
-
- printk ("%s -- (Sense key=0x%02x)\n", s, reqbuf->sense_key);
-
- if (reqbuf->asc == 0x40) {
- sprintf (buf, "Diagnostic failure on component 0x%02x",
- reqbuf->ascq);
- s = buf;
- } else {
- int lo=0, mid, hi=ARY_LEN (sense_data_texts);
- unsigned long key = (reqbuf->sense_key << 16);
- key |= (reqbuf->asc << 8);
- if ( ! (reqbuf->ascq >= 0x80 && reqbuf->ascq <= 0xdd) )
- key |= reqbuf->ascq;
- s = NULL;
-
- while (hi > lo) {
- mid = (lo + hi) / 2;
- if (sense_data_texts[mid].asc_ascq == key ||
- sense_data_texts[mid].asc_ascq == (0xff0000|key)) {
- s = sense_data_texts[mid].text;
- break;
- }
- else if (sense_data_texts[mid].asc_ascq > key)
- hi = mid;
- else
- lo = mid+1;
- }
- }
-
- if (s == NULL) {
- if (reqbuf->asc > 0x80)
- s = "(vendor-specific error)";
- else
- s = "(reserved error code)";
- }
-
- printk (" %s -- (asc=0x%02x, ascq=0x%02x)\n",
- s, reqbuf->asc, reqbuf->ascq);
-
- if (failed_command != NULL) {
-
- int lo=0, mid, hi= ARY_LEN (packet_command_texts);
- s = NULL;
-
- while (hi > lo) {
- mid = (lo + hi) / 2;
- if (packet_command_texts[mid].packet_command == failed_command->c[0]) {
- s = packet_command_texts[mid].text;
- break;
- }
- else if (packet_command_texts[mid].packet_command > failed_command->c[0])
- hi = mid;
- else
- lo = mid+1;
- }
-
- printk (" The failed \"%s\" packet command was: \n \"", s);
- for (i=0; i<sizeof (failed_command->c); i++)
- printk ("%02x ", failed_command->c[i]);
- printk ("\"\n");
- }
-
- /* The SKSV bit specifies validity of the sense_key_specific
- * in the next two commands. It is bit 7 of the first byte.
- * In the case of NOT_READY, if SKSV is set the drive can
- * give us nice ETA readings.
- */
- if (reqbuf->sense_key == NOT_READY && (reqbuf->sks[0] & 0x80)) {
- int progress = (reqbuf->sks[1] << 8 | reqbuf->sks[2]) * 100;
- printk(" Command is %02d%% complete\n", progress / 0xffff);
-
- }
-
- if (reqbuf->sense_key == ILLEGAL_REQUEST &&
- (reqbuf->sks[0] & 0x80) != 0) {
- printk (" Error in %s byte %d",
- (reqbuf->sks[0] & 0x40) != 0 ?
- "command packet" : "command data",
- (reqbuf->sks[1] << 8) + reqbuf->sks[2]);
-
- if ((reqbuf->sks[0] & 0x40) != 0)
- printk (" bit %d", reqbuf->sks[0] & 0x07);
-
- printk ("\n");
- }
- }
-
-#else /* not VERBOSE_IDE_CD_ERRORS */
-
- /* Suppress printing unit attention and `in progress of becoming ready'
- errors when we're not being verbose. */
-
- if (reqbuf->sense_key == UNIT_ATTENTION ||
- (reqbuf->sense_key == NOT_READY && (reqbuf->asc == 4 ||
- reqbuf->asc == 0x3a)))
- return;
-
- printk ("%s: error code: 0x%02x sense_key: 0x%02x asc: 0x%02x ascq: 0x%02x\n",
- drive->name,
- reqbuf->error_code, reqbuf->sense_key,
- reqbuf->asc, reqbuf->ascq);
-#endif /* not VERBOSE_IDE_CD_ERRORS */
-}
-
-static void cdrom_queue_request_sense (ide_drive_t *drive,
- struct semaphore *sem,
- struct packet_command *failed_command)
-{
- struct cdrom_info *info = drive->driver_data;
- struct request *rq;
- struct packet_command *pc;
-
- /* Make up a new request to retrieve sense information. */
- pc = &info->request_sense_pc;
- memset(pc, 0, sizeof (*pc));
-
- pc->c[0] = GPCMD_REQUEST_SENSE;
-
- /* just get the first 18 bytes of the sense info, there might not
- * be more available */
- pc->c[4] = pc->buflen = 18;
- pc->buffer = (char *)&info->sense_data;
- pc->sense_data = (struct request_sense *)failed_command;
-
- /* stuff the sense request in front of our current request */
- rq = &info->request_sense_request;
- ide_init_drive_cmd (rq);
- rq->cmd = REQUEST_SENSE_COMMAND;
- rq->buffer = (char *)pc;
- rq->sem = sem;
- (void) ide_do_drive_cmd (drive, rq, ide_preempt);
-}
-
-
-static void cdrom_end_request (int uptodate, ide_drive_t *drive)
-{
- struct request *rq = HWGROUP(drive)->rq;
-
- if (rq->cmd == REQUEST_SENSE_COMMAND && uptodate) {
- struct packet_command *pc = (struct packet_command *)
- rq->buffer;
- cdrom_analyze_sense_data (drive,
- (struct request_sense *) (pc->buffer - pc->c[4]),
- (struct packet_command *) pc->sense_data);
- }
- if (rq->cmd == READ && !rq->current_nr_sectors)
- uptodate = 1;
-
- ide_end_request (uptodate, HWGROUP(drive));
-}
-
-
-/* Returns 0 if the request should be continued.
- Returns 1 if the request was ended. */
-static int cdrom_decode_status (ide_startstop_t *startstop, ide_drive_t *drive, int good_stat,
- int *stat_ret)
-{
- struct request *rq = HWGROUP(drive)->rq;
- int stat, cmd, err, sense_key;
- struct packet_command *pc = (struct packet_command *) rq->buffer;
-
- /* Check for errors. */
- stat = GET_STAT();
- *stat_ret = stat;
-
- if (OK_STAT (stat, good_stat, BAD_R_STAT))
- return 0;
-
- /* Get the IDE error register. */
- err = GET_ERR();
- sense_key = err >> 4;
-
- if (rq == NULL)
- printk ("%s: missing request in cdrom_decode_status\n",
- drive->name);
- else {
- cmd = rq->cmd;
-
- if (cmd == REQUEST_SENSE_COMMAND) {
- /* We got an error trying to get sense info
- from the drive (probably while trying
- to recover from a former error). Just give up. */
-
- pc->stat = 1;
- cdrom_end_request (1, drive);
- *startstop = ide_error (drive, "request sense failure", stat);
- return 1;
-
- } else if (cmd == PACKET_COMMAND) {
- /* All other functions, except for READ. */
-
- struct semaphore *sem = NULL;
-
- /* Check for tray open. */
- if (sense_key == NOT_READY) {
- cdrom_saw_media_change (drive);
- } else if (sense_key == UNIT_ATTENTION) {
- /* Check for media change. */
- cdrom_saw_media_change (drive);
- /*printk("%s: media changed\n",drive->name);*/
- return 0;
- } else {
- /* Otherwise, print an error. */
- ide_dump_status (drive, "packet command error",
- stat);
- }
-
- /* Set the error flag and complete the request.
- Then, if we have a CHECK CONDITION status,
- queue a request sense command. We must be careful,
- though: we don't want the thread in
- cdrom_queue_packet_command to wake up until
- the request sense has completed. We do this
- by transferring the semaphore from the packet
- command request to the request sense request. */
-
- if ((stat & ERR_STAT) != 0) {
- sem = rq->sem;
- rq->sem = NULL;
- }
-
- pc->stat = 1;
- cdrom_end_request (1, drive);
-
- if ((stat & ERR_STAT) != 0)
- cdrom_queue_request_sense(drive, sem, pc);
- } else {
- /* Handle errors from READ requests. */
-
- if (sense_key == NOT_READY) {
- /* Tray open. */
- cdrom_saw_media_change (drive);
-
- /* Fail the request. */
- printk ("%s: tray open\n", drive->name);
- cdrom_end_request (0, drive);
- } else if (sense_key == UNIT_ATTENTION) {
- /* Media change. */
- cdrom_saw_media_change (drive);
-
- /* Arrange to retry the request.
- But be sure to give up if we've retried
- too many times. */
- if (++rq->errors > ERROR_MAX)
- cdrom_end_request (0, drive);
- } else if (sense_key == ILLEGAL_REQUEST ||
- sense_key == DATA_PROTECT) {
- /* No point in retrying after an illegal
- request or data protect error.*/
- ide_dump_status (drive, "command error", stat);
- cdrom_end_request (0, drive);
- } else if ((err & ~ABRT_ERR) != 0) {
- /* Go to the default handler
- for other errors. */
- *startstop = ide_error (drive, "cdrom_decode_status", stat);
- return 1;
- } else if ((++rq->errors > ERROR_MAX)) {
- /* We've racked up too many retries. Abort. */
- cdrom_end_request (0, drive);
- }
-
- /* If we got a CHECK_CONDITION status,
- queue a request sense command. */
- if ((stat & ERR_STAT) != 0)
- cdrom_queue_request_sense(drive, NULL, NULL);
- }
- }
-
- /* Retry, or handle the next request. */
- *startstop = ide_stopped;
- return 1;
-}
-
-static int cdrom_timer_expiry(ide_drive_t *drive)
-{
- struct request *rq = HWGROUP(drive)->rq;
- struct packet_command *pc = (struct packet_command *) rq->buffer;
- unsigned long wait = 0;
-
- /* blank and format can take an extremly long time to
- * complete, if the IMMED bit was not set.
- */
- if (pc->c[0] == GPCMD_BLANK || pc->c[0] == GPCMD_FORMAT_UNIT)
- wait = 60*60*HZ;
-
- return wait;
-}
-
-/* Set up the device registers for transferring a packet command on DEV,
- expecting to later transfer XFERLEN bytes. HANDLER is the routine
- which actually transfers the command to the drive. If this is a
- drq_interrupt device, this routine will arrange for HANDLER to be
- called when the interrupt from the drive arrives. Otherwise, HANDLER
- will be called immediately after the drive is prepared for the transfer. */
-
-static ide_startstop_t cdrom_start_packet_command (ide_drive_t *drive, int xferlen,
- ide_handler_t *handler)
-{
- ide_startstop_t startstop;
- struct cdrom_info *info = drive->driver_data;
-
- /* Wait for the controller to be idle. */
- if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
- return startstop;
-
- if (info->dma)
- info->dma = !HWIF(drive)->dmaproc(ide_dma_read, drive);
-
- /* Set up the controller registers. */
- OUT_BYTE (info->dma, IDE_FEATURE_REG);
- OUT_BYTE (0, IDE_NSECTOR_REG);
- OUT_BYTE (0, IDE_SECTOR_REG);
-
- OUT_BYTE (xferlen & 0xff, IDE_LCYL_REG);
- OUT_BYTE (xferlen >> 8 , IDE_HCYL_REG);
- if (IDE_CONTROL_REG)
- OUT_BYTE (drive->ctl, IDE_CONTROL_REG);
-
- if (info->dma)
- (void) (HWIF(drive)->dmaproc(ide_dma_begin, drive));
-
- if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
- ide_set_handler (drive, handler, WAIT_CMD, cdrom_timer_expiry);
- OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG); /* packet command */
- return ide_started;
- } else {
- OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG); /* packet command */
- return (*handler) (drive);
- }
-}
-
-/* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN.
- The device registers must have already been prepared
- by cdrom_start_packet_command.
- HANDLER is the interrupt handler to call when the command completes
- or there's data ready. */
-static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive,
- unsigned char *cmd_buf, int cmd_len,
- ide_handler_t *handler)
-{
- if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
- /* Here we should have been called after receiving an interrupt
- from the device. DRQ should how be set. */
- int stat_dum;
- ide_startstop_t startstop;
-
- /* Check for errors. */
- if (cdrom_decode_status (&startstop, drive, DRQ_STAT, &stat_dum))
- return startstop;
- } else {
- ide_startstop_t startstop;
- /* Otherwise, we must wait for DRQ to get set. */
- if (ide_wait_stat (&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY))
- return startstop;
- }
-
- /* Arm the interrupt handler. */
- ide_set_handler (drive, handler, WAIT_CMD, cdrom_timer_expiry);
-
- /* Send the command to the device. */
- atapi_output_bytes (drive, cmd_buf, cmd_len);
-
- return ide_started;
-}
-
-
-
-/****************************************************************************
- * Block read functions.
- */
-
-/*
- * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector
- * buffer. Once the first sector is added, any subsequent sectors are
- * assumed to be continuous (until the buffer is cleared). For the first
- * sector added, SECTOR is its sector number. (SECTOR is then ignored until
- * the buffer is cleared.)
- */
-static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector,
- int sectors_to_transfer)
-{
- struct cdrom_info *info = drive->driver_data;
-
- /* Number of sectors to read into the buffer. */
- int sectors_to_buffer = MIN (sectors_to_transfer,
- (SECTOR_BUFFER_SIZE >> SECTOR_BITS) -
- info->nsectors_buffered);
-
- char *dest;
-
- /* If we couldn't get a buffer, don't try to buffer anything... */
- if (info->buffer == NULL)
- sectors_to_buffer = 0;
-
- /* If this is the first sector in the buffer, remember its number. */
- if (info->nsectors_buffered == 0)
- info->sector_buffered = sector;
-
- /* Read the data into the buffer. */
- dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE;
- while (sectors_to_buffer > 0) {
- atapi_input_bytes (drive, dest, SECTOR_SIZE);
- --sectors_to_buffer;
- --sectors_to_transfer;
- ++info->nsectors_buffered;
- dest += SECTOR_SIZE;
- }
-
- /* Throw away any remaining data. */
- while (sectors_to_transfer > 0) {
- char dum[SECTOR_SIZE];
- atapi_input_bytes (drive, dum, sizeof (dum));
- --sectors_to_transfer;
- }
-}
-
-/*
- * Check the contents of the interrupt reason register from the cdrom
- * and attempt to recover if there are problems. Returns 0 if everything's
- * ok; nonzero if the request has been terminated.
- */
-static inline
-int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason)
-{
- ireason &= 3;
- if (ireason == 2) return 0;
-
- if (ireason == 0) {
- /* Whoops... The drive is expecting to receive data from us! */
- printk ("%s: cdrom_read_intr: "
- "Drive wants to transfer data the wrong way!\n",
- drive->name);
-
- /* Throw some data at the drive so it doesn't hang
- and quit this request. */
- while (len > 0) {
- int dum = 0;
- atapi_output_bytes (drive, &dum, sizeof (dum));
- len -= sizeof (dum);
- }
- } else if (ireason == 1) {
- /* Some drives (ASUS) seem to tell us that status
- * info is available. just get it and ignore.
- */
- GET_STAT();
- return 0;
- } else {
- /* Drive wants a command packet, or invalid ireason... */
- printk ("%s: cdrom_read_intr: bad interrupt reason %d\n",
- drive->name, ireason);
- }
-
- cdrom_end_request (0, drive);
- return -1;
-}
-
-/*
- * Interrupt routine. Called when a read request has completed.
- */
-static ide_startstop_t cdrom_read_intr (ide_drive_t *drive)
-{
- int stat;
- int ireason, len, sectors_to_transfer, nskip;
- struct cdrom_info *info = drive->driver_data;
- int i, dma = info->dma, dma_error = 0;
- ide_startstop_t startstop;
-
- struct request *rq = HWGROUP(drive)->rq;
-
- /* Check for errors. */
- if (dma) {
- info->dma = 0;
- if ((dma_error = HWIF(drive)->dmaproc(ide_dma_end, drive)))
- HWIF(drive)->dmaproc(ide_dma_off, drive);
- }
-
- if (cdrom_decode_status (&startstop, drive, 0, &stat))
- return startstop;
-
- if (dma) {
- if (!dma_error) {
- for (i = rq->nr_sectors; i > 0;) {
- i -= rq->current_nr_sectors;
- ide_end_request(1, HWGROUP(drive));
- }
- return ide_stopped;
- } else
- return ide_error (drive, "dma error", stat);
- }
-
- /* Read the interrupt reason and the transfer length. */
- ireason = IN_BYTE (IDE_NSECTOR_REG);
- len = IN_BYTE (IDE_LCYL_REG) + 256 * IN_BYTE (IDE_HCYL_REG);
-
- /* If DRQ is clear, the command has completed. */
- if ((stat & DRQ_STAT) == 0) {
- /* If we're not done filling the current buffer, complain.
- Otherwise, complete the command normally. */
- if (rq->current_nr_sectors > 0) {
- printk ("%s: cdrom_read_intr: data underrun (%ld blocks)\n",
- drive->name, rq->current_nr_sectors);
- cdrom_end_request (0, drive);
- } else
- cdrom_end_request (1, drive);
- return ide_stopped;
- }
-
- /* Check that the drive is expecting to do the same thing we are. */
- if (cdrom_read_check_ireason (drive, len, ireason))
- return ide_stopped;
-
- /* Assume that the drive will always provide data in multiples
- of at least SECTOR_SIZE, as it gets hairy to keep track
- of the transfers otherwise. */
- if ((len % SECTOR_SIZE) != 0) {
- printk ("%s: cdrom_read_intr: Bad transfer size %d\n",
- drive->name, len);
- if (CDROM_CONFIG_FLAGS (drive)->limit_nframes)
- printk (" This drive is not supported by this version of the driver\n");
- else {
- printk (" Trying to limit transfer sizes\n");
- CDROM_CONFIG_FLAGS (drive)->limit_nframes = 1;
- }
- cdrom_end_request (0, drive);
- return ide_stopped;
- }
-
- /* The number of sectors we need to read from the drive. */
- sectors_to_transfer = len / SECTOR_SIZE;
-
- /* First, figure out if we need to bit-bucket
- any of the leading sectors. */
- nskip = MIN ((int)(rq->current_nr_sectors - (rq->bh->b_size >> SECTOR_BITS)),
- sectors_to_transfer);
-
- while (nskip > 0) {
- /* We need to throw away a sector. */
- char dum[SECTOR_SIZE];
- atapi_input_bytes (drive, dum, sizeof (dum));
-
- --rq->current_nr_sectors;
- --nskip;
- --sectors_to_transfer;
- }
-
- /* Now loop while we still have data to read from the drive. */
- while (sectors_to_transfer > 0) {
- int this_transfer;
-
- /* If we've filled the present buffer but there's another
- chained buffer after it, move on. */
- if (rq->current_nr_sectors == 0 &&
- rq->nr_sectors > 0)
- cdrom_end_request (1, drive);
-
- /* If the buffers are full, cache the rest of the data in our
- internal buffer. */
- if (rq->current_nr_sectors == 0) {
- cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer);
- sectors_to_transfer = 0;
- } else {
- /* Transfer data to the buffers.
- Figure out how many sectors we can transfer
- to the current buffer. */
- this_transfer = MIN (sectors_to_transfer,
- rq->current_nr_sectors);
-
- /* Read this_transfer sectors
- into the current buffer. */
- while (this_transfer > 0) {
- atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE);
- rq->buffer += SECTOR_SIZE;
- --rq->nr_sectors;
- --rq->current_nr_sectors;
- ++rq->sector;
- --this_transfer;
- --sectors_to_transfer;
- }
- }
- }
-
- /* Done moving data!
- Wait for another interrupt. */
- ide_set_handler(drive, &cdrom_read_intr, WAIT_CMD, NULL);
- return ide_started;
-}
-
-/*
- * Try to satisfy some of the current read request from our cached data.
- * Returns nonzero if the request has been completed, zero otherwise.
- */
-static int cdrom_read_from_buffer (ide_drive_t *drive)
-{
- struct cdrom_info *info = drive->driver_data;
- struct request *rq = HWGROUP(drive)->rq;
-
- /* Can't do anything if there's no buffer. */
- if (info->buffer == NULL) return 0;
-
- /* Loop while this request needs data and the next block is present
- in our cache. */
- while (rq->nr_sectors > 0 &&
- rq->sector >= info->sector_buffered &&
- rq->sector < info->sector_buffered + info->nsectors_buffered) {
- if (rq->current_nr_sectors == 0)
- cdrom_end_request (1, drive);
-
- memcpy (rq->buffer,
- info->buffer +
- (rq->sector - info->sector_buffered) * SECTOR_SIZE,
- SECTOR_SIZE);
- rq->buffer += SECTOR_SIZE;
- --rq->current_nr_sectors;
- --rq->nr_sectors;
- ++rq->sector;
- }
-
- /* If we've satisfied the current request,
- terminate it successfully. */
- if (rq->nr_sectors == 0) {
- cdrom_end_request (1, drive);
- return -1;
- }
-
- /* Move on to the next buffer if needed. */
- if (rq->current_nr_sectors == 0)
- cdrom_end_request (1, drive);
-
- /* If this condition does not hold, then the kluge i use to
- represent the number of sectors to skip at the start of a transfer
- will fail. I think that this will never happen, but let's be
- paranoid and check. */
- if (rq->current_nr_sectors < (rq->bh->b_size >> SECTOR_BITS) &&
- (rq->sector % SECTORS_PER_FRAME) != 0) {
- printk ("%s: cdrom_read_from_buffer: buffer botch (%ld)\n",
- drive->name, rq->sector);
- cdrom_end_request (0, drive);
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Routine to send a read packet command to the drive.
- * This is usually called directly from cdrom_start_read.
- * However, for drq_interrupt devices, it is called from an interrupt
- * when the drive is ready to accept the command.
- */
-static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive)
-{
- struct packet_command pc;
- struct request *rq = HWGROUP(drive)->rq;
- int nsect, sector, nframes, frame, nskip;
-
- /* Number of sectors to transfer. */
- nsect = rq->nr_sectors;
-
- /* Starting sector. */
- sector = rq->sector;
-
- /* If the requested sector doesn't start on a cdrom block boundary,
- we must adjust the start of the transfer so that it does,
- and remember to skip the first few sectors.
- If the CURRENT_NR_SECTORS field is larger than the size
- of the buffer, it will mean that we're to skip a number
- of sectors equal to the amount by which CURRENT_NR_SECTORS
- is larger than the buffer size. */
- nskip = (sector % SECTORS_PER_FRAME);
- if (nskip > 0) {
- /* Sanity check... */
- if (rq->current_nr_sectors != (rq->bh->b_size >> SECTOR_BITS) &&
- (rq->sector % CD_FRAMESIZE != 0)) {
- printk ("%s: cdrom_start_read_continuation: buffer botch (%lu)\n",
- drive->name, rq->current_nr_sectors);
- cdrom_end_request (0, drive);
- return ide_stopped;
- }
- sector -= nskip;
- nsect += nskip;
- rq->current_nr_sectors += nskip;
- }
-
- /* Convert from sectors to cdrom blocks, rounding up the transfer
- length if needed. */
- nframes = (nsect + SECTORS_PER_FRAME-1) / SECTORS_PER_FRAME;
- frame = sector / SECTORS_PER_FRAME;
-
- /* Largest number of frames was can transfer at once is 64k-1. For
- some drives we need to limit this even more. */
- nframes = MIN (nframes, (CDROM_CONFIG_FLAGS (drive)->limit_nframes) ?
- (65534 / CD_FRAMESIZE) : 65535);
-
- /* Set up the command */
- memset (&pc.c, 0, sizeof (pc.c));
- pc.c[0] = GPCMD_READ_10;
- pc.c[7] = (nframes >> 8);
- pc.c[8] = (nframes & 0xff);
- put_unaligned(htonl (frame), (unsigned int *) &pc.c[2]);
-
- /* Send the command to the drive and return. */
- return cdrom_transfer_packet_command (drive, pc.c, sizeof (pc.c),
- &cdrom_read_intr);
-}
-
-
-#define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
-#define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
-#define IDECD_SEEK_TIMEOUT WAIT_CMD /* 10 sec */
-
-static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive)
-{
- struct cdrom_info *info = drive->driver_data;
- int stat;
- static int retry = 10;
- ide_startstop_t startstop;
-
- if (cdrom_decode_status (&startstop, drive, 0, &stat))
- return startstop;
- CDROM_CONFIG_FLAGS(drive)->seeking = 1;
-
- if (retry && jiffies - info->start_seek > IDECD_SEEK_TIMER) {
- if (--retry == 0) {
- printk("%s: disabled DSC seek overlap\n", drive->name);
- drive->dsc_overlap = 0;
- }
- }
- return ide_stopped;
-}
-
-static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive)
-{
- struct packet_command pc;
- struct request *rq = HWGROUP(drive)->rq;
- int sector, frame, nskip;
-
- sector = rq->sector;
- nskip = (sector % SECTORS_PER_FRAME);
- if (nskip > 0)
- sector -= nskip;
- frame = sector / SECTORS_PER_FRAME;
-
- memset (&pc.c, 0, sizeof (pc.c));
- pc.c[0] = GPCMD_SEEK;
- put_unaligned(cpu_to_be32(frame), (unsigned int *) &pc.c[2]);
- return cdrom_transfer_packet_command (drive, pc.c, sizeof (pc.c), &cdrom_seek_intr);
-}
-
-static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block)
-{
- struct cdrom_info *info = drive->driver_data;
-
- info->dma = 0;
- info->start_seek = jiffies;
- return cdrom_start_packet_command (drive, 0, cdrom_start_seek_continuation);
-}
-
-/* Fix up a possibly partially-processed request so that we can
- start it over entirely, or even put it back on the request queue. */
-static void restore_request (struct request *rq)
-{
- if (rq->buffer != rq->bh->b_data) {
- int n = (rq->buffer - rq->bh->b_data) / SECTOR_SIZE;
- rq->buffer = rq->bh->b_data;
- rq->nr_sectors += n;
- rq->sector -= n;
- }
- rq->current_nr_sectors = rq->bh->b_size >> SECTOR_BITS;
-}
-
-/*
- * Start a read request from the CD-ROM.
- */
-static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block)
-{
- struct cdrom_info *info = drive->driver_data;
- struct request *rq = HWGROUP(drive)->rq;
- int minor = MINOR (rq->rq_dev);
-
- /* If the request is relative to a partition, fix it up to refer to the
- absolute address. */
- if ((minor & PARTN_MASK) != 0) {
- rq->sector = block;
- minor &= ~PARTN_MASK;
- rq->rq_dev = MKDEV (MAJOR(rq->rq_dev), minor);
- }
-
- /* We may be retrying this request after an error. Fix up
- any weirdness which might be present in the request packet. */
- restore_request (rq);
-
- /* Satisfy whatever we can of this request from our cached sector. */
- if (cdrom_read_from_buffer(drive))
- return ide_stopped;
-
- /* Clear the local sector buffer. */
- info->nsectors_buffered = 0;
-
- /* use dma, if possible. */
- if (drive->using_dma && (rq->sector % SECTORS_PER_FRAME == 0) &&
- (rq->nr_sectors % SECTORS_PER_FRAME == 0))
- info->dma = 1;
- else
- info->dma = 0;
-
- /* Start sending the read request to the drive. */
- return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation);
-}
-
-/****************************************************************************
- * Execute all other packet commands.
- */
-
-/* Forward declarations. */
-static int cdrom_lockdoor(ide_drive_t *drive, int lockflag);
-
-/* Interrupt routine for packet command completion. */
-static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive)
-{
- int ireason, len, stat, thislen;
- struct request *rq = HWGROUP(drive)->rq;
- struct packet_command *pc = (struct packet_command *)rq->buffer;
- struct cdrom_info *info = drive->driver_data;
- ide_startstop_t startstop;
-
- pc->sense_data = &info->sense_data;
-
- /* Check for errors. */
- if (cdrom_decode_status (&startstop, drive, 0, &stat))
- return startstop;
-
- /* Read the interrupt reason and the transfer length. */
- ireason = IN_BYTE (IDE_NSECTOR_REG);
- len = IN_BYTE (IDE_LCYL_REG) + 256 * IN_BYTE (IDE_HCYL_REG);
-
- /* If DRQ is clear, the command has completed.
- Complain if we still have data left to transfer. */
- if ((stat & DRQ_STAT) == 0) {
- /* Some of the trailing request sense fields are optional, and
- some drives don't send them. Sigh. */
- if (pc->c[0] == GPCMD_REQUEST_SENSE &&
- pc->buflen > 0 &&
- pc->buflen <= 5) {
- while (pc->buflen > 0) {
- *pc->buffer++ = 0;
- --pc->buflen;
- }
- }
-
- if (pc->buflen == 0)
- cdrom_end_request (1, drive);
- else {
- /* Comment this out, because this always happens
- right after a reset occurs, and it is annoying to
- always print expected stuff. */
- /*
- printk ("%s: cdrom_pc_intr: data underrun %d\n",
- drive->name, pc->buflen);
- */
- pc->stat = 1;
- cdrom_end_request (1, drive);
- }
- return ide_stopped;
- }
-
- /* Figure out how much data to transfer. */
- thislen = pc->buflen;
- if (thislen > len) thislen = len;
-
- /* The drive wants to be written to. */
- if ((ireason & 3) == 0) {
- /* Transfer the data. */
- atapi_output_bytes (drive, pc->buffer, thislen);
-
- /* If we haven't moved enough data to satisfy the drive,
- add some padding. */
- while (len > thislen) {
- int dum = 0;
- atapi_output_bytes (drive, &dum, sizeof (dum));
- len -= sizeof (dum);
- }
-
- /* Keep count of how much data we've moved. */
- pc->buffer += thislen;
- pc->buflen -= thislen;
- }
-
- /* Same drill for reading. */
- else if ((ireason & 3) == 2) {
-
- /* Transfer the data. */
- atapi_input_bytes (drive, pc->buffer, thislen);
-
- /* If we haven't moved enough data to satisfy the drive,
- add some padding. */
- while (len > thislen) {
- int dum = 0;
- atapi_input_bytes (drive, &dum, sizeof (dum));
- len -= sizeof (dum);
- }
-
- /* Keep count of how much data we've moved. */
- pc->buffer += thislen;
- pc->buflen -= thislen;
- } else {
- printk ("%s: cdrom_pc_intr: The drive "
- "appears confused (ireason = 0x%2x)\n",
- drive->name, ireason);
- pc->stat = 1;
- }
-
- /* Now we wait for another interrupt. */
- ide_set_handler (drive, &cdrom_pc_intr, WAIT_CMD, cdrom_timer_expiry);
- return ide_started;
-}
-
-
-static ide_startstop_t cdrom_do_pc_continuation (ide_drive_t *drive)
-{
- struct request *rq = HWGROUP(drive)->rq;
- struct packet_command *pc = (struct packet_command *)rq->buffer;
-
- /* Send the command to the drive and return. */
- return cdrom_transfer_packet_command (drive, pc->c,
- sizeof (pc->c), &cdrom_pc_intr);
-}
-
-
-static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive)
-{
- int len;
- struct request *rq = HWGROUP(drive)->rq;
- struct packet_command *pc = (struct packet_command *)rq->buffer;
- struct cdrom_info *info = drive->driver_data;
-
- info->dma = 0;
- pc->stat = 0;
- len = pc->buflen;
-
- /* Start sending the command to the drive. */
- return cdrom_start_packet_command (drive, len, cdrom_do_pc_continuation);
-}
-
-
-/* Sleep for TIME jiffies.
- Not to be called from an interrupt handler. */
-static
-void cdrom_sleep (int time)
-{
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(time);
-}
-
-static
-int cdrom_queue_packet_command(ide_drive_t *drive, struct packet_command *pc)
-{
- int retries = 10;
- struct request req;
-
- /* Start of retry loop. */
- do {
- ide_init_drive_cmd (&req);
- req.cmd = PACKET_COMMAND;
- req.buffer = (char *)pc;
- if (ide_do_drive_cmd (drive, &req, ide_wait)) {
- printk("%s: do_drive_cmd returned stat=%02x,err=%02x\n",
- drive->name, req.buffer[0], req.buffer[1]);
- /* FIXME: we should probably abort/retry or something */
- }
- if (pc->stat != 0) {
- /* The request failed. Retry if it was due to a unit
- attention status
- (usually means media was changed). */
- struct request_sense *reqbuf = pc->sense_data;
-
- if (reqbuf->sense_key == UNIT_ATTENTION)
- cdrom_saw_media_change (drive);
- else if (reqbuf->sense_key == NOT_READY &&
- reqbuf->asc == 4 && reqbuf->ascq != 4) {
- /* The drive is in the process of loading
- a disk. Retry, but wait a little to give
- the drive time to complete the load. */
- cdrom_sleep (HZ);
- } else {
- /* Otherwise, don't retry. */
- retries = 0;
- }
- --retries;
- }
-
- /* End of retry loop. */
- } while (pc->stat != 0 && retries >= 0);
-
- /* Return an error if the command failed. */
- if (pc->stat)
- return -EIO;
-
- /* The command succeeded. If it was anything other than
- a request sense, eject, or door lock command,
- and we think that the door is presently unlocked, lock it
- again. (The door was probably unlocked via an explicit
- CDROMEJECT ioctl.) */
- if (CDROM_STATE_FLAGS (drive)->door_locked == 0 &&
- (pc->c[0] != GPCMD_TEST_UNIT_READY &&
- pc->c[0] != GPCMD_REQUEST_SENSE &&
- pc->c[0] != GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL &&
- pc->c[0] != GPCMD_START_STOP_UNIT &&
- pc->c[0] != GPCMD_MODE_SENSE_10 &&
- pc->c[0] != GPCMD_MODE_SELECT_10)) {
- (void) cdrom_lockdoor (drive, 1);
- }
- return 0;
-}
-
-/****************************************************************************
- * cdrom driver request routine.
- */
-static ide_startstop_t
-ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, unsigned long block)
-{
- ide_startstop_t action;
- struct cdrom_info *info = drive->driver_data;
-
- switch (rq->cmd) {
- case READ: {
- if (CDROM_CONFIG_FLAGS(drive)->seeking) {
- unsigned long elpased = jiffies - info->start_seek;
- int stat = GET_STAT();
-
- if ((stat & SEEK_STAT) != SEEK_STAT) {
- if (elpased < IDECD_SEEK_TIMEOUT) {
- ide_stall_queue(drive, IDECD_SEEK_TIMER);
- return ide_stopped;
- }
- printk ("%s: DSC timeout\n", drive->name);
- }
- CDROM_CONFIG_FLAGS(drive)->seeking = 0;
- }
- if (IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap)
- action = cdrom_start_seek (drive, block);
- else
- action = cdrom_start_read (drive, block);
- info->last_block = block;
- return action;
- }
-
- case PACKET_COMMAND:
- case REQUEST_SENSE_COMMAND: {
- return cdrom_do_packet_command(drive);
- }
-
- case RESET_DRIVE_COMMAND: {
- cdrom_end_request(1, drive);
- return ide_do_reset(drive);
- }
-
- default: {
- printk("ide-cd: bad cmd %d\n", rq -> cmd);
- cdrom_end_request(0, drive);
- return ide_stopped;
- }
- }
-}
-
-
-
-/****************************************************************************
- * Ioctl handling.
- *
- * Routines which queue packet commands take as a final argument a pointer
- * to a request_sense struct. If execution of the command results
- * in an error with a CHECK CONDITION status, this structure will be filled
- * with the results of the subsequent request sense command. The pointer
- * can also be NULL, in which case no sense information is returned.
- */
-
-#if ! STANDARD_ATAPI
-static inline
-int bin2bcd (int x)
-{
- return (x%10) | ((x/10) << 4);
-}
-
-
-static inline
-int bcd2bin (int x)
-{
- return (x >> 4) * 10 + (x & 0x0f);
-}
-
-static
-void msf_from_bcd (struct atapi_msf *msf)
-{
- msf->minute = bcd2bin (msf->minute);
- msf->second = bcd2bin (msf->second);
- msf->frame = bcd2bin (msf->frame);
-}
-
-#endif /* not STANDARD_ATAPI */
-
-
-static inline
-void lba_to_msf (int lba, byte *m, byte *s, byte *f)
-{
- lba += CD_MSF_OFFSET;
- lba &= 0xffffff; /* negative lbas use only 24 bits */
- *m = lba / (CD_SECS * CD_FRAMES);
- lba %= (CD_SECS * CD_FRAMES);
- *s = lba / CD_FRAMES;
- *f = lba % CD_FRAMES;
-}
-
-
-static inline
-int msf_to_lba (byte m, byte s, byte f)
-{
- return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
-}
-
-static int cdrom_check_status (ide_drive_t *drive)
-{
- struct packet_command pc;
- struct cdrom_info *info = drive->driver_data;
- struct cdrom_device_info *cdi = &info->devinfo;
-
- memset(&pc, 0, sizeof(pc));
-
- pc.c[0] = GPCMD_TEST_UNIT_READY;
-
-#if ! STANDARD_ATAPI
- /* the Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
- switch CDs instead of supporting the LOAD_UNLOAD opcode */
-
- pc.c[7] = cdi->sanyo_slot % 3;
-#endif /* not STANDARD_ATAPI */
-
- return cdrom_queue_packet_command(drive, &pc);
-}
-
-
-/* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
-static int
-cdrom_lockdoor(ide_drive_t *drive, int lockflag)
-{
- struct request_sense *sense;
- struct packet_command pc;
- int stat;
-
- /* If the drive cannot lock the door, just pretend. */
- if (CDROM_CONFIG_FLAGS (drive)->no_doorlock)
- stat = 0;
- else {
- memset(&pc, 0, sizeof(pc));
- pc.c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
- pc.c[4] = (lockflag != 0);
- stat = cdrom_queue_packet_command (drive, &pc);
- }
-
- sense = pc.sense_data;
-
- /* If we got an illegal field error, the drive
- probably cannot lock the door. */
- if (stat != 0 &&
- sense->sense_key == ILLEGAL_REQUEST &&
- (sense->asc == 0x24 || sense->asc == 0x20)) {
- printk ("%s: door locking not supported\n",
- drive->name);
- CDROM_CONFIG_FLAGS (drive)->no_doorlock = 1;
- stat = 0;
- }
-
- /* no medium, that's alright. */
- if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a)
- stat = 0;
-
- if (stat == 0)
- CDROM_STATE_FLAGS (drive)->door_locked = lockflag;
-
- return stat;
-}
-
-
-/* Eject the disk if EJECTFLAG is 0.
- If EJECTFLAG is 1, try to reload the disk. */
-static int cdrom_eject(ide_drive_t *drive, int ejectflag)
-{
- struct packet_command pc;
-
- if (CDROM_CONFIG_FLAGS(drive)->no_eject && !ejectflag)
- return -EDRIVE_CANT_DO_THIS;
-
- /* reload fails on some drives, if the tray is locked */
- if (CDROM_STATE_FLAGS(drive)->door_locked && ejectflag)
- return 0;
-
- memset(&pc, 0, sizeof (pc));
-
- pc.c[0] = GPCMD_START_STOP_UNIT;
- pc.c[4] = 0x02 + (ejectflag != 0);
- return cdrom_queue_packet_command (drive, &pc);
-}
-
-static int cdrom_read_capacity(ide_drive_t *drive, unsigned *capacity)
-{
- struct {
- __u32 lba;
- __u32 blocklen;
- } capbuf;
-
- int stat;
- struct packet_command pc;
-
- memset(&pc, 0, sizeof (pc));
-
- pc.c[0] = GPCMD_READ_CDVD_CAPACITY;
- pc.buffer = (char *)&capbuf;
- pc.buflen = sizeof(capbuf);
-
- stat = cdrom_queue_packet_command(drive, &pc);
- if (stat == 0)
- *capacity = be32_to_cpu(capbuf.lba);
-
- return stat;
-}
-
-static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
- int format, char *buf, int buflen)
-{
- struct packet_command pc;
-
- memset(&pc, 0, sizeof(pc));
-
- pc.buffer = buf;
- pc.buflen = buflen;
- pc.c[0] = GPCMD_READ_TOC_PMA_ATIP;
- pc.c[6] = trackno;
- pc.c[7] = (buflen >> 8);
- pc.c[8] = (buflen & 0xff);
- pc.c[9] = (format << 6);
-
- if (msf_flag)
- pc.c[1] = 2;
-
- return cdrom_queue_packet_command (drive, &pc);
-}
-
-
-/* Try to read the entire TOC for the disk into our internal buffer. */
-static int cdrom_read_toc (ide_drive_t *drive)
-{
- int stat, ntracks, i;
- struct cdrom_info *info = drive->driver_data;
- struct atapi_toc *toc = info->toc;
- int minor = drive->select.b.unit << PARTN_BITS;
- struct {
- struct atapi_toc_header hdr;
- struct atapi_toc_entry ent;
- } ms_tmp;
-
- if (toc == NULL) {
- /* Try to allocate space. */
- toc = (struct atapi_toc *) kmalloc (sizeof (struct atapi_toc),
- GFP_KERNEL);
- info->toc = toc;
- if (toc == NULL) {
- printk ("%s: No cdrom TOC buffer!\n", drive->name);
- return -ENOMEM;
- }
- }
-
- /* Check to see if the existing data is still valid.
- If it is, just return. */
- if (CDROM_STATE_FLAGS (drive)->toc_valid)
- (void) cdrom_check_status(drive);
-
- if (CDROM_STATE_FLAGS (drive)->toc_valid) return 0;
-
- /* First read just the header, so we know how long the TOC is. */
- stat = cdrom_read_tocentry (drive, 0, 1, 0, (char *)&toc->hdr,
- sizeof (struct atapi_toc_header));
- if (stat) return stat;
-
-#if ! STANDARD_ATAPI
- if (CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd) {
- toc->hdr.first_track = bcd2bin (toc->hdr.first_track);
- toc->hdr.last_track = bcd2bin (toc->hdr.last_track);
- }
-#endif /* not STANDARD_ATAPI */
-
- ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
- if (ntracks <= 0) return -EIO;
- if (ntracks > MAX_TRACKS) ntracks = MAX_TRACKS;
-
- /* Now read the whole schmeer. */
- stat = cdrom_read_tocentry (drive, toc->hdr.first_track, 1, 0, (char *)&toc->hdr,
- sizeof (struct atapi_toc_header) +
- (ntracks + 1) *
- sizeof (struct atapi_toc_entry));
-
- if (stat && toc->hdr.first_track > 1) {
- /* Cds with CDI tracks only don't have any TOC entries,
- despite of this the returned values are
- first_track == last_track = number of CDI tracks + 1,
- so that this case is indistinguishable from the same
- layout plus an additional audio track.
- If we get an error for the regular case, we assume
- a CDI without additional audio tracks. In this case
- the readable TOC is empty (CDI tracks are not included)
- and only holds the Leadout entry. Heiko Eißfeldt */
- ntracks = 0;
- stat = cdrom_read_tocentry (drive, CDROM_LEADOUT, 1,
- 0, (char *)&toc->hdr,
- sizeof (struct atapi_toc_header) +
- (ntracks+1) *
- sizeof (struct atapi_toc_entry));
- if (stat) {
- return stat;
- }
-#if ! STANDARD_ATAPI
- if (CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd) {
- toc->hdr.first_track = bin2bcd(CDROM_LEADOUT);
- toc->hdr.last_track = bin2bcd(CDROM_LEADOUT);
- } else
-#endif /* not STANDARD_ATAPI */
- {
- toc->hdr.first_track = CDROM_LEADOUT;
- toc->hdr.last_track = CDROM_LEADOUT;
- }
- } else if (stat) {
- return stat;
- }
- if (stat) return stat;
-
- toc->hdr.toc_length = ntohs (toc->hdr.toc_length);
-
-#if ! STANDARD_ATAPI
- if (CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd) {
- toc->hdr.first_track = bcd2bin (toc->hdr.first_track);
- toc->hdr.last_track = bcd2bin (toc->hdr.last_track);
- }
-#endif /* not STANDARD_ATAPI */
-
- for (i=0; i<=ntracks; i++) {
-#if ! STANDARD_ATAPI
- if (CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd) {
- if (CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd)
- toc->ent[i].track = bcd2bin (toc->ent[i].track);
- msf_from_bcd (&toc->ent[i].addr.msf);
- }
-#endif /* not STANDARD_ATAPI */
- toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute,
- toc->ent[i].addr.msf.second,
- toc->ent[i].addr.msf.frame);
- }
-
- /* Read the multisession information. */
- if (toc->hdr.first_track != CDROM_LEADOUT) {
- /* Read the multisession information. */
- stat = cdrom_read_tocentry (drive, 0, 1, 1,
- (char *)&ms_tmp, sizeof (ms_tmp));
- if (stat) return stat;
- } else {
- ms_tmp.ent.addr.msf.minute = 0;
- ms_tmp.ent.addr.msf.second = 2;
- ms_tmp.ent.addr.msf.frame = 0;
- ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT;
- }
-
-#if ! STANDARD_ATAPI
- if (CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd)
- msf_from_bcd (&ms_tmp.ent.addr.msf);
-#endif /* not STANDARD_ATAPI */
-
- toc->last_session_lba = msf_to_lba (ms_tmp.ent.addr.msf.minute,
- ms_tmp.ent.addr.msf.second,
- ms_tmp.ent.addr.msf.frame);
-
- toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
-
- /* Now try to get the total cdrom capacity. */
-#if 0
- stat = cdrom_get_last_written(MKDEV(HWIF(drive)->major, minor),
- (long *)&toc->capacity);
- if (stat)
-#endif
- stat = cdrom_read_capacity (drive, &toc->capacity);
- if (stat) toc->capacity = 0x1fffff;
-
- /* for general /dev/cdrom like mounting, one big disc */
- drive->part[0].nr_sects = toc->capacity * SECTORS_PER_FRAME;
- HWIF(drive)->gd->sizes[minor] = (toc->capacity * SECTORS_PER_FRAME) >>
- (BLOCK_SIZE_BITS - 9);
-
- /* Remember that we've read this stuff. */
- CDROM_STATE_FLAGS (drive)->toc_valid = 1;
-
- /* should be "if multisession", but it does no harm. */
- if (ntracks == 1)
- return 0;
-
- /* setup each minor to respond to a session */
- minor++;
- i = toc->hdr.first_track;
- while ((i <= ntracks) && ((minor & CD_PART_MASK) < CD_PART_MAX)) {
- drive->part[minor & PARTN_MASK].start_sect = 0;
- drive->part[minor & PARTN_MASK].nr_sects =
- (toc->ent[i].addr.lba *
- SECTORS_PER_FRAME) << (BLOCK_SIZE_BITS - 9);
- HWIF(drive)->gd->sizes[minor] = (toc->ent[i].addr.lba *
- SECTORS_PER_FRAME) >> (BLOCK_SIZE_BITS - 9);
- i++;
- minor++;
- }
-
- return 0;
-}
-
-
-static int cdrom_read_subchannel(ide_drive_t *drive, int format, char *buf,
- int buflen)
-{
- struct packet_command pc;
-
- memset(&pc, 0, sizeof(pc));
-
- pc.buffer = buf;
- pc.buflen = buflen;
- pc.c[0] = GPCMD_READ_SUBCHANNEL;
- pc.c[1] = 2; /* MSF addressing */
- pc.c[2] = 0x40; /* request subQ data */
- pc.c[3] = format;
- pc.c[7] = (buflen >> 8);
- pc.c[8] = (buflen & 0xff);
- return cdrom_queue_packet_command(drive, &pc);
-}
-
-/* ATAPI cdrom drives are free to select the speed you request or any slower
- rate :-( Requesting too fast a speed will _not_ produce an error. */
-static int cdrom_select_speed (ide_drive_t *drive, int speed)
-{
- struct packet_command pc;
- memset(&pc, 0, sizeof(pc));
-
- if (speed == 0)
- speed = 0xffff; /* set to max */
- else
- speed *= 177; /* Nx to kbytes/s */
-
- pc.c[0] = GPCMD_SET_SPEED;
- /* Read Drive speed in kbytes/second MSB */
- pc.c[2] = (speed >> 8) & 0xff;
- /* Read Drive speed in kbytes/second LSB */
- pc.c[3] = speed & 0xff;
- if ( CDROM_CONFIG_FLAGS(drive)->cd_r ||
- CDROM_CONFIG_FLAGS(drive)->cd_rw ) {
- /* Write Drive speed in kbytes/second MSB */
- pc.c[4] = (speed >> 8) & 0xff;
- /* Write Drive speed in kbytes/second LSB */
- pc.c[5] = speed & 0xff;
- }
-
- return cdrom_queue_packet_command (drive, &pc);
-}
-
-
-static int cdrom_get_toc_entry(ide_drive_t *drive, int track,
- struct atapi_toc_entry **ent)
-{
- struct cdrom_info *info = drive->driver_data;
- struct atapi_toc *toc = info->toc;
- int ntracks;
-
- /* Check validity of requested track number. */
- ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
- if (toc->hdr.first_track == CDROM_LEADOUT) ntracks = 0;
- if (track == CDROM_LEADOUT)
- *ent = &toc->ent[ntracks];
- else if (track < toc->hdr.first_track ||
- track > toc->hdr.last_track)
- return -EINVAL;
- else
- *ent = &toc->ent[track - toc->hdr.first_track];
-
- return 0;
-}
-
-
-
-
-
-/* the generic packet interface to cdrom.c */
-static int ide_cdrom_packet(struct cdrom_device_info *cdi,
- struct cdrom_generic_command *cgc)
-{
- struct packet_command pc;
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
-
- /* here we queue the commands from the uniform CD-ROM
- layer. the packet must be complete, as we do not
- touch it at all. */
- memset(&pc, 0, sizeof(pc));
- memcpy(pc.c, cgc->cmd, CDROM_PACKET_SIZE);
- pc.buffer = cgc->buffer;
- pc.buflen = cgc->buflen;
- cgc->stat = cdrom_queue_packet_command(drive, &pc);
-
- /* There was an error, assign sense. */
- if (cgc->stat)
- cgc->sense = pc.sense_data;
-
- return cgc->stat;
-}
-
-static
-int ide_cdrom_dev_ioctl (struct cdrom_device_info *cdi,
- unsigned int cmd, unsigned long arg)
-{
- struct cdrom_generic_command cgc;
- char buffer[16];
- int stat;
-
- init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
-
- /* These will be moved into the Uniform layer shortly... */
- switch (cmd) {
- case CDROMSETSPINDOWN: {
- char spindown;
-
- if (copy_from_user(&spindown, (void *) arg, sizeof(char)))
- return -EFAULT;
-
- if ((stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0)))
- return stat;
-
- buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
-
- return cdrom_mode_select(cdi, &cgc);
- }
-
- case CDROMGETSPINDOWN: {
- char spindown;
-
- if ((stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0)))
- return stat;
-
- spindown = buffer[11] & 0x0f;
-
- if (copy_to_user((void *) arg, &spindown, sizeof (char)))
- return -EFAULT;
-
- return 0;
- }
-
- default:
- return -EINVAL;
- }
-
-}
-
-static
-int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi,
- unsigned int cmd, void *arg)
-
-{
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
- struct cdrom_info *info = drive->driver_data;
-
- switch (cmd) {
- case CDROMREADTOCHDR: {
- int stat;
- struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg;
- struct atapi_toc *toc;
-
- /* Make sure our saved TOC is valid. */
- stat = cdrom_read_toc(drive);
- if (stat) return stat;
-
- toc = info->toc;
- tochdr->cdth_trk0 = toc->hdr.first_track;
- tochdr->cdth_trk1 = toc->hdr.last_track;
-
- return 0;
- }
-
- case CDROMREADTOCENTRY: {
- int stat;
- struct cdrom_tocentry *tocentry = (struct cdrom_tocentry*) arg;
- struct atapi_toc_entry *toce;
-
- stat = cdrom_get_toc_entry (drive, tocentry->cdte_track, &toce);
- if (stat) return stat;
-
- tocentry->cdte_ctrl = toce->control;
- tocentry->cdte_adr = toce->adr;
- if (tocentry->cdte_format == CDROM_MSF) {
- lba_to_msf (toce->addr.lba,
- &tocentry->cdte_addr.msf.minute,
- &tocentry->cdte_addr.msf.second,
- &tocentry->cdte_addr.msf.frame);
- } else
- tocentry->cdte_addr.lba = toce->addr.lba;
-
- return 0;
- }
-
- default:
- return -EINVAL;
- }
-}
-
-static
-int ide_cdrom_reset (struct cdrom_device_info *cdi)
-{
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
- struct request req;
-
- ide_init_drive_cmd (&req);
- req.cmd = RESET_DRIVE_COMMAND;
- return ide_do_drive_cmd (drive, &req, ide_wait);
-}
-
-
-static
-int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position)
-{
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
-
- if (position) {
- int stat = cdrom_lockdoor (drive, 0);
- if (stat) return stat;
- }
-
- return cdrom_eject(drive, !position);
-}
-
-static
-int ide_cdrom_lock_door (struct cdrom_device_info *cdi, int lock)
-{
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
- return cdrom_lockdoor (drive, lock);
-}
-
-#undef __ACER50__
-
-#ifdef __ACER50__
-/*
- * the buffer struct used by ide_cdrom_get_capabilities()
- */
-struct get_capabilities_buf {
- char pad[8];
- struct atapi_capabilities_page cap; /* this is 4 bytes short of ATAPI standard */
- char extra_cap[4]; /* Acer 50X needs the regulation size buffer */
-};
-
-static
-int ide_cdrom_get_capabilities (struct cdrom_device_info *cdi, struct get_capabilities_buf *buf)
-{
- int stat, attempts = 3, buflen = sizeof(*buf);
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
- struct cdrom_generic_command cgc;
-
- /*
- * Most drives don't care about the buffer size;
- * they return as much info as there's room for.
- * But some older drives (?) had trouble with the
- * standard size, preferring 4 bytes less.
- * And the modern Acer 50X rejects anything smaller
- * than the standard size.
- */
- if (!(drive->id && !strcmp(drive->id->model,"ATAPI CD ROM DRIVE 50X MAX")))
- buflen -= sizeof(buf->extra_cap); /* for all drives except Acer 50X */
-
- do { /* we seem to get stat=0x01,err=0x00 the first time (??) */
- stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
- if (stat == 0) {
- /*
- * The ACER/AOpen 24X cdrom has the speed
- * fields byte-swapped from the standard.
- */
- if (!(drive->id && !drive->id->model[0] && !strncmp(drive->id->fw_rev, "241N", 4))) {
- buf->cap.curspeed = ntohs(buf->cap.curspeed);
- buf->cap.maxspeed = ntohs(buf->cap.maxspeed);
- }
- CDROM_STATE_FLAGS (drive)->current_speed = (((unsigned int)buf->cap.curspeed) + (176/2)) / 176;
- CDROM_CONFIG_FLAGS(drive)->max_speed = (((unsigned int)buf->cap.maxspeed) + (176/2)) / 176;
- return 0;
- }
- } while (--attempts);
- return stat;
-}
-#endif /* __ACER50__ */
-
-static
-int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed)
-{
-#ifndef __ACER50__
- int stat, attempts = 3;
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
- struct cdrom_generic_command cgc;
- struct {
- char pad[8];
- struct atapi_capabilities_page cap;
- } buf;
-#else
- int stat;
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
- struct cdrom_generic_command cgc;
- struct get_capabilities_buf buf;
-#endif /* __ACER50__ */
-
- if ((stat = cdrom_select_speed (drive, speed)) < 0)
- return stat;
-
- init_cdrom_command(&cgc, &buf, sizeof(buf), CGC_DATA_UNKNOWN);
-
-#ifndef __ACER50__
- /* Now with that done, update the speed fields */
- do { /* we seem to get stat=0x01,err=0x00 the first time (??) */
- if (attempts-- <= 0)
- return 0;
- stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
- } while (stat);
-
- /* The ACER/AOpen 24X cdrom has the speed fields byte-swapped */
- if (drive->id && !drive->id->model[0] && !strncmp(drive->id->fw_rev, "241N", 4)) {
- CDROM_STATE_FLAGS (drive)->current_speed =
- (((unsigned int)buf.cap.curspeed) + (176/2)) / 176;
- CDROM_CONFIG_FLAGS (drive)->max_speed =
- (((unsigned int)buf.cap.maxspeed) + (176/2)) / 176;
- } else {
- CDROM_STATE_FLAGS (drive)->current_speed =
- (ntohs(buf.cap.curspeed) + (176/2)) / 176;
- CDROM_CONFIG_FLAGS (drive)->max_speed =
- (ntohs(buf.cap.maxspeed) + (176/2)) / 176;
- }
-#else
- if (ide_cdrom_get_capabilities(cdi,&buf))
- return 0;
-#endif /* __ACER50__ */
-
- cdi->speed = CDROM_STATE_FLAGS (drive)->current_speed;
- return 0;
-}
-
-static
-int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr)
-{
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
- struct cdrom_info *info = drive->driver_data;
-
- if (slot_nr == CDSL_CURRENT) {
- struct request_sense *sense = &info->sense_data;
- int stat = cdrom_check_status(drive);
- if (stat == 0 || sense->sense_key == UNIT_ATTENTION)
- return CDS_DISC_OK;
-
- if (sense->sense_key == NOT_READY && sense->asc == 0x04 &&
- sense->ascq == 0x04)
- return CDS_DISC_OK;
-
- if (sense->sense_key == NOT_READY) {
- /* ATAPI doesn't have anything that can help
- us decide whether the drive is really
- emtpy or the tray is just open. irk. */
- return CDS_TRAY_OPEN;
- }
-
- return CDS_DRIVE_NOT_READY;
- } else {
- return -EINVAL;
- }
-}
-
-static
-int ide_cdrom_get_last_session (struct cdrom_device_info *cdi,
- struct cdrom_multisession *ms_info)
-{
- struct atapi_toc *toc;
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
- struct cdrom_info *info = drive->driver_data;
-
- toc = info->toc;
- ms_info->addr.lba = toc->last_session_lba;
- ms_info->xa_flag = toc->xa_flag;
-
- return 0;
-}
-
-static
-int ide_cdrom_get_mcn (struct cdrom_device_info *cdi,
- struct cdrom_mcn *mcn_info)
-{
- int stat;
- char mcnbuf[24];
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
-
-/* get MCN */
- if ((stat = cdrom_read_subchannel(drive, 2, mcnbuf, sizeof (mcnbuf))))
- return stat;
-
- memcpy (mcn_info->medium_catalog_number, mcnbuf+9,
- sizeof (mcn_info->medium_catalog_number)-1);
- mcn_info->medium_catalog_number[sizeof (mcn_info->medium_catalog_number)-1]
- = '\0';
-
- return 0;
-}
-
-
-
-/****************************************************************************
- * Other driver requests (open, close, check media change).
- */
-
-static
-int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi,
- int slot_nr)
-{
- ide_drive_t *drive = (ide_drive_t*) cdi->handle;
-
- if (slot_nr == CDSL_CURRENT) {
- (void) cdrom_check_status(drive);
- CDROM_STATE_FLAGS (drive)->media_changed = 0;
- return CDROM_STATE_FLAGS (drive)->media_changed;
- } else {
- return -EINVAL;
- }
-}
-
-
-static
-int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose)
-{
- return 0;
-}
-
-
-/*
- * Close down the device. Invalidate all cached blocks.
- */
-
-static
-void ide_cdrom_release_real (struct cdrom_device_info *cdi)
-{
-}
-
-
-
-/****************************************************************************
- * Device initialization.
- */
-
-static
-struct cdrom_device_ops ide_cdrom_dops = {
- ide_cdrom_open_real, /* open */
- ide_cdrom_release_real, /* release */
- ide_cdrom_drive_status, /* drive_status */
- ide_cdrom_check_media_change_real, /* media_changed */
- ide_cdrom_tray_move, /* tray_move */
- ide_cdrom_lock_door, /* lock_door */
- ide_cdrom_select_speed, /* select_speed */
- NULL, /* select_disc */
- ide_cdrom_get_last_session, /* get_last_session */
- ide_cdrom_get_mcn, /* get_mcn */
- ide_cdrom_reset, /* reset */
- ide_cdrom_audio_ioctl, /* audio_ioctl */
- ide_cdrom_dev_ioctl, /* dev_ioctl */
- CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED
- | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN
- | CDC_MEDIA_CHANGED | CDC_PLAY_AUDIO | CDC_RESET | CDC_IOCTLS
- | CDC_DRIVE_STATUS | CDC_CD_R | CDC_CD_RW | CDC_DVD
- | CDC_DVD_R| CDC_DVD_RAM | CDC_GENERIC_PACKET, /* capability */
- 0, /* n_minors */
- ide_cdrom_packet
-};
-
-static int ide_cdrom_register (ide_drive_t *drive, int nslots)
-{
- struct cdrom_info *info = drive->driver_data;
- struct cdrom_device_info *devinfo = &info->devinfo;
- int minor = (drive->select.b.unit)<<PARTN_BITS;
-
- devinfo->dev = MKDEV (HWIF(drive)->major, minor | CD_PART_MASK);
- devinfo->ops = &ide_cdrom_dops;
- devinfo->mask = 0;
- *(int *)&devinfo->speed = CDROM_STATE_FLAGS (drive)->current_speed;
- *(int *)&devinfo->capacity = nslots;
- devinfo->handle = (void *) drive;
- strcpy(devinfo->name, drive->name);
-
- /* set capability mask to match the probe. */
- if (!CDROM_CONFIG_FLAGS (drive)->cd_r)
- devinfo->mask |= CDC_CD_R;
- if (!CDROM_CONFIG_FLAGS (drive)->cd_rw)
- devinfo->mask |= CDC_CD_RW;
- if (!CDROM_CONFIG_FLAGS (drive)->dvd)
- devinfo->mask |= CDC_DVD;
- if (!CDROM_CONFIG_FLAGS (drive)->dvd_r)
- devinfo->mask |= CDC_DVD_R;
- if (!CDROM_CONFIG_FLAGS (drive)->dvd_ram)
- devinfo->mask |= CDC_DVD_RAM;
- if (!CDROM_CONFIG_FLAGS (drive)->is_changer)
- devinfo->mask |= CDC_SELECT_DISC;
- if (!CDROM_CONFIG_FLAGS (drive)->audio_play)
- devinfo->mask |= CDC_PLAY_AUDIO;
- if (!CDROM_CONFIG_FLAGS (drive)->close_tray)
- devinfo->mask |= CDC_CLOSE_TRAY;
-
- devinfo->de = devfs_register (drive->de, "cd", 2, DEVFS_FL_DEFAULT,
- HWIF(drive)->major, minor,
- S_IFBLK | S_IRUGO | S_IWUGO, 0, 0,
- ide_fops, NULL);
-
- return register_cdrom (devinfo);
-}
-
-
-static
-int ide_cdrom_probe_capabilities (ide_drive_t *drive)
-{
- struct cdrom_info *info = drive->driver_data;
- struct cdrom_device_info *cdi = &info->devinfo;
-#ifndef __ACER50__
- int stat, nslots = 1, attempts = 3;
- struct cdrom_generic_command cgc;
- struct {
- char pad[8];
- struct atapi_capabilities_page cap;
- } buf;
-#else
- int nslots = 1;
- struct cdrom_generic_command cgc;
- struct get_capabilities_buf buf;
-#endif /* __ACER50__ */
-
- if (CDROM_CONFIG_FLAGS (drive)->nec260) {
- CDROM_CONFIG_FLAGS (drive)->no_eject = 0;
- CDROM_CONFIG_FLAGS (drive)->audio_play = 1;
- return nslots;
- }
-
- init_cdrom_command(&cgc, &buf, sizeof(buf), CGC_DATA_UNKNOWN);
- /* we have to cheat a little here. the packet will eventually
- * be queued with ide_cdrom_packet(), which extracts the
- * drive from cdi->handle. Since this device hasn't been
- * registered with the Uniform layer yet, it can't do this.
- * Same goes for cdi->ops.
- */
- cdi->handle = (ide_drive_t *) drive;
- cdi->ops = &ide_cdrom_dops;
-#ifndef __ACER50__
- /* we seem to get stat=0x01,err=0x00 the first time (??) */
- do {
- if (attempts-- <= 0)
- return 0;
- stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
- } while (stat);
-#else
- if (ide_cdrom_get_capabilities(cdi,&buf))
- return 0;
-#endif /* __ACER50__ */
-
- if (buf.cap.lock == 0)
- CDROM_CONFIG_FLAGS (drive)->no_doorlock = 1;
- if (buf.cap.eject)
- CDROM_CONFIG_FLAGS (drive)->no_eject = 0;
- if (buf.cap.cd_r_write)
- CDROM_CONFIG_FLAGS (drive)->cd_r = 1;
- if (buf.cap.cd_rw_write)
- CDROM_CONFIG_FLAGS (drive)->cd_rw = 1;
- if (buf.cap.test_write)
- CDROM_CONFIG_FLAGS (drive)->test_write = 1;
- if (buf.cap.dvd_ram_read || buf.cap.dvd_r_read || buf.cap.dvd_rom)
- CDROM_CONFIG_FLAGS (drive)->dvd = 1;
- if (buf.cap.dvd_ram_write)
- CDROM_CONFIG_FLAGS (drive)->dvd_r = 1;
- if (buf.cap.dvd_r_write)
- CDROM_CONFIG_FLAGS (drive)->dvd_ram = 1;
- if (buf.cap.audio_play)
- CDROM_CONFIG_FLAGS (drive)->audio_play = 1;
- if (buf.cap.mechtype == 0)
- CDROM_CONFIG_FLAGS (drive)->close_tray = 0;
-
-#if ! STANDARD_ATAPI
- if (cdi->sanyo_slot > 0) {
- CDROM_CONFIG_FLAGS (drive)->is_changer = 1;
- nslots = 3;
- }
-
- else
-#endif /* not STANDARD_ATAPI */
- if (buf.cap.mechtype == mechtype_individual_changer ||
- buf.cap.mechtype == mechtype_cartridge_changer) {
- if ((nslots = cdrom_number_of_slots(cdi)) > 1) {
- CDROM_CONFIG_FLAGS (drive)->is_changer = 1;
- CDROM_CONFIG_FLAGS (drive)->supp_disc_present = 1;
- }
- }
-
-#ifndef __ACER50__
- /* The ACER/AOpen 24X cdrom has the speed fields byte-swapped */
- if (drive->id && !drive->id->model[0] && !strncmp(drive->id->fw_rev, "241N", 4)) {
- CDROM_STATE_FLAGS (drive)->current_speed =
- (((unsigned int)buf.cap.curspeed) + (176/2)) / 176;
- CDROM_CONFIG_FLAGS (drive)->max_speed =
- (((unsigned int)buf.cap.maxspeed) + (176/2)) / 176;
- } else {
- CDROM_STATE_FLAGS (drive)->current_speed =
- (ntohs(buf.cap.curspeed) + (176/2)) / 176;
- CDROM_CONFIG_FLAGS (drive)->max_speed =
- (ntohs(buf.cap.maxspeed) + (176/2)) / 176;
- }
-#endif /* __ACER50__ */
-
- /* don't print speed if the drive reported 0.
- */
- printk("%s: ATAPI", drive->name);
- if (CDROM_CONFIG_FLAGS(drive)->max_speed)
- printk(" %dX", CDROM_CONFIG_FLAGS(drive)->max_speed);
- printk(" %s", CDROM_CONFIG_FLAGS(drive)->dvd ? "DVD-ROM" : "CD-ROM");
-
- if (CDROM_CONFIG_FLAGS (drive)->dvd_r|CDROM_CONFIG_FLAGS (drive)->dvd_ram)
- printk (" DVD%s%s",
- (CDROM_CONFIG_FLAGS (drive)->dvd_r)? "-R" : "",
- (CDROM_CONFIG_FLAGS (drive)->dvd_ram)? "AM" : "");
-
- if (CDROM_CONFIG_FLAGS (drive)->cd_r|CDROM_CONFIG_FLAGS (drive)->cd_rw)
- printk (" CD%s%s",
- (CDROM_CONFIG_FLAGS (drive)->cd_r)? "-R" : "",
- (CDROM_CONFIG_FLAGS (drive)->cd_rw)? "/RW" : "");
-
- if (CDROM_CONFIG_FLAGS (drive)->is_changer)
- printk (" changer w/%d slots", nslots);
- else
- printk (" drive");
-
- printk (", %dkB Cache", be16_to_cpu(buf.cap.buffer_size));
-
- if (drive->using_dma) {
- if ((drive->id->field_valid & 4) &&
- (drive->id->hw_config & 0x2000) &&
- (HWIF(drive)->udma_four) &&
- (drive->id->dma_ultra & (drive->id->dma_ultra >> 11) & 3)) {
- printk(", UDMA(66)"); /* UDMA BIOS-enabled! */
- } else if ((drive->id->field_valid & 4) &&
- (drive->id->dma_ultra & (drive->id->dma_ultra >> 8) & 7)) {
- printk(", UDMA(33)"); /* UDMA BIOS-enabled! */
- } else if (drive->id->field_valid & 4) {
- printk(", (U)DMA"); /* Can be BIOS-enabled! */
- } else {
- printk(", DMA");
- }
- }
- printk("\n");
-
- return nslots;
-}
-
-static void ide_cdrom_add_settings(ide_drive_t *drive)
-{
- int major = HWIF(drive)->major;
- int minor = drive->select.b.unit << PARTN_BITS;
-
- ide_add_setting(drive, "breada_readahead", SETTING_RW, BLKRAGET, BLKRASET, TYPE_INT, 0, 255, 1, 2, &read_ahead[major], NULL);
- ide_add_setting(drive, "file_readahead", SETTING_RW, BLKFRAGET, BLKFRASET, TYPE_INTA, 0, INT_MAX, 1, 1024, &max_readahead[major][minor], NULL);
- ide_add_setting(drive, "max_kb_per_request", SETTING_RW, BLKSECTGET, BLKSECTSET, TYPE_INTA, 1, 255, 1, 2, &max_sectors[major][minor], NULL);
- ide_add_setting(drive, "dsc_overlap", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
-}
-
-static
-int ide_cdrom_setup (ide_drive_t *drive)
-{
- struct cdrom_info *info = drive->driver_data;
- struct cdrom_device_info *cdi = &info->devinfo;
- int minor = drive->select.b.unit << PARTN_BITS;
- int nslots;
-
- set_device_ro(MKDEV(HWIF(drive)->major, minor), 1);
- set_blocksize(MKDEV(HWIF(drive)->major, minor), CD_FRAMESIZE);
-
- drive->special.all = 0;
- drive->ready_stat = 0;
-
- CDROM_STATE_FLAGS (drive)->media_changed = 1;
- CDROM_STATE_FLAGS (drive)->toc_valid = 0;
- CDROM_STATE_FLAGS (drive)->door_locked = 0;
-
-#if NO_DOOR_LOCKING
- CDROM_CONFIG_FLAGS (drive)->no_doorlock = 1;
-#else
- CDROM_CONFIG_FLAGS (drive)->no_doorlock = 0;
-#endif
-
- if (drive->id != NULL)
- CDROM_CONFIG_FLAGS (drive)->drq_interrupt =
- ((drive->id->config & 0x0060) == 0x20);
- else
- CDROM_CONFIG_FLAGS (drive)->drq_interrupt = 0;
-
- CDROM_CONFIG_FLAGS (drive)->is_changer = 0;
- CDROM_CONFIG_FLAGS (drive)->cd_r = 0;
- CDROM_CONFIG_FLAGS (drive)->cd_rw = 0;
- CDROM_CONFIG_FLAGS (drive)->test_write = 0;
- CDROM_CONFIG_FLAGS (drive)->dvd = 0;
- CDROM_CONFIG_FLAGS (drive)->dvd_r = 0;
- CDROM_CONFIG_FLAGS (drive)->dvd_ram = 0;
- CDROM_CONFIG_FLAGS (drive)->no_eject = 1;
- CDROM_CONFIG_FLAGS (drive)->supp_disc_present = 0;
- CDROM_CONFIG_FLAGS (drive)->audio_play = 0;
- CDROM_CONFIG_FLAGS (drive)->close_tray = 1;
-
- /* limit transfer size per interrupt. */
- CDROM_CONFIG_FLAGS (drive)->limit_nframes = 0;
- if (drive->id != NULL) {
- /* a testament to the nice quality of Samsung drives... */
- if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2430"))
- CDROM_CONFIG_FLAGS (drive)->limit_nframes = 1;
- else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2432"))
- CDROM_CONFIG_FLAGS (drive)->limit_nframes = 1;
- /* the 3231 model does not support the SET_CD_SPEED command */
- else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-3231"))
- cdi->mask |= CDC_SELECT_SPEED;
- }
-
-#if ! STANDARD_ATAPI
- /* by default Sanyo 3 CD changer support is turned off and
- ATAPI Rev 2.2+ standard support for CD changers is used */
- cdi->sanyo_slot = 0;
-
- CDROM_CONFIG_FLAGS (drive)->nec260 = 0;
- CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd = 0;
- CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd = 0;
- CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd = 0;
- CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd = 0;
-
- if (drive->id != NULL) {
- if (strcmp (drive->id->model, "V003S0DS") == 0 &&
- drive->id->fw_rev[4] == '1' &&
- drive->id->fw_rev[6] <= '2') {
- /* Vertos 300.
- Some versions of this drive like to talk BCD. */
- CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd = 1;
- CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd = 1;
- CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd = 1;
- CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd = 1;
- }
-
- else if (strcmp (drive->id->model, "V006E0DS") == 0 &&
- drive->id->fw_rev[4] == '1' &&
- drive->id->fw_rev[6] <= '2') {
- /* Vertos 600 ESD. */
- CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd = 1;
- }
-
- else if (strcmp (drive->id->model,
- "NEC CD-ROM DRIVE:260") == 0 &&
- strncmp (drive->id->fw_rev, "1.01", 4) == 0) { /* FIXME */
- /* Old NEC260 (not R).
- This drive was released before the 1.2 version
- of the spec. */
- CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd = 1;
- CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd = 1;
- CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd = 1;
- CDROM_CONFIG_FLAGS (drive)->nec260 = 1;
- }
-
- else if (strcmp (drive->id->model, "WEARNES CDD-120") == 0 &&
- strncmp (drive->id->fw_rev, "A1.1", 4) == 0) { /* FIXME */
- /* Wearnes */
- CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd = 1;
- CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd = 1;
- }
-
- /* Sanyo 3 CD changer uses a non-standard command
- for CD changing */
- else if ((strcmp(drive->id->model, "CD-ROM CDR-C3 G") == 0) ||
- (strcmp(drive->id->model, "CD-ROM CDR-C3G") == 0) ||
- (strcmp(drive->id->model, "CD-ROM CDR_C36") == 0)) {
- /* uses CD in slot 0 when value is set to 3 */
- cdi->sanyo_slot = 3;
- }
-
-
- }
-#endif /* not STANDARD_ATAPI */
-
- info->toc = NULL;
- info->buffer = NULL;
- info->sector_buffered = 0;
- info->nsectors_buffered = 0;
- info->changer_info = NULL;
- info->last_block = 0;
- info->start_seek = 0;
-
- nslots = ide_cdrom_probe_capabilities (drive);
-
- if (ide_cdrom_register (drive, nslots)) {
- printk ("%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name);
- info->devinfo.handle = NULL;
- return 1;
- }
- ide_cdrom_add_settings(drive);
- return 0;
-}
-
-/* Forwarding functions to generic routines. */
-static
-int ide_cdrom_ioctl (ide_drive_t *drive,
- struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- return cdrom_fops.ioctl (inode, file, cmd, arg);
-}
-
-static
-int ide_cdrom_open (struct inode *ip, struct file *fp, ide_drive_t *drive)
-{
- struct cdrom_info *info = drive->driver_data;
- int rc;
-
- MOD_INC_USE_COUNT;
- if (info->buffer == NULL)
- info->buffer = (char *) kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL);
- rc = cdrom_fops.open (ip, fp);
- if (rc) {
- drive->usage--;
- MOD_DEC_USE_COUNT;
- }
- return rc;
-}
-
-static
-void ide_cdrom_release (struct inode *inode, struct file *file,
- ide_drive_t *drive)
-{
- cdrom_fops.release (inode, file);
- MOD_DEC_USE_COUNT;
-}
-
-static
-int ide_cdrom_check_media_change (ide_drive_t *drive)
-{
- return cdrom_fops.check_media_change
- (MKDEV (HWIF (drive)->major,
- (drive->select.b.unit)<<PARTN_BITS));
-}
-
-static
-int ide_cdrom_cleanup(ide_drive_t *drive)
-{
- struct cdrom_info *info = drive->driver_data;
- struct cdrom_device_info *devinfo = &info->devinfo;
-
- if (ide_unregister_subdriver (drive))
- return 1;
- if (info->buffer != NULL)
- kfree(info->buffer);
- if (info->toc != NULL)
- kfree(info->toc);
- if (info->changer_info != NULL)
- kfree(info->changer_info);
- if (devinfo->handle == drive && unregister_cdrom (devinfo))
- printk ("%s: ide_cdrom_cleanup failed to unregister device from the cdrom driver.\n", drive->name);
- kfree(info);
- drive->driver_data = NULL;
- return 0;
-}
-
-static ide_driver_t ide_cdrom_driver = {
- "ide-cdrom", /* name */
- IDECD_VERSION, /* version */
- ide_cdrom, /* media */
- 0, /* busy */
- 1, /* supports_dma */
- 1, /* supports_dsc_overlap */
- ide_cdrom_cleanup, /* cleanup */
- ide_do_rw_cdrom, /* do_request */
- NULL, /* ??? or perhaps cdrom_end_request? */
- ide_cdrom_ioctl, /* ioctl */
- ide_cdrom_open, /* open */
- ide_cdrom_release, /* release */
- ide_cdrom_check_media_change, /* media_change */
- NULL, /* pre_reset */
- NULL, /* capacity */
- NULL, /* special */
- NULL /* proc */
-};
-
-int ide_cdrom_init (void);
-static ide_module_t ide_cdrom_module = {
- IDE_DRIVER_MODULE,
- ide_cdrom_init,
- &ide_cdrom_driver,
- NULL
-};
-
-/* options */
-char *ignore = NULL;
-
-#ifdef MODULE
-MODULE_PARM(ignore, "s");
-MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
-
-void __exit ide_cdrom_exit(void)
-{
- ide_drive_t *drive;
- int failed = 0;
-
- while ((drive = ide_scan_devices (ide_cdrom, ide_cdrom_driver.name, &ide_cdrom_driver, failed)) != NULL)
- if (ide_cdrom_cleanup (drive)) {
- printk ("%s: cleanup_module() called while still busy\n", drive->name);
- failed++;
- }
- ide_unregister_module (&ide_cdrom_module);
-}
-#endif /* MODULE */
-
-int ide_cdrom_init (void)
-{
- ide_drive_t *drive;
- struct cdrom_info *info;
- int failed = 0;
-
- MOD_INC_USE_COUNT;
- while ((drive = ide_scan_devices (ide_cdrom, ide_cdrom_driver.name, NULL, failed++)) != NULL) {
- /* skip drives that we were told to ignore */
- if (ignore != NULL) {
- if (strstr(ignore, drive->name)) {
- printk("ide-cd: ignoring drive %s\n", drive->name);
- continue;
- }
- }
- if (drive->scsi) {
- printk("ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name);
- continue;
- }
- info = (struct cdrom_info *) kmalloc (sizeof (struct cdrom_info), GFP_KERNEL);
- if (info == NULL) {
- printk ("%s: Can't allocate a cdrom structure\n", drive->name);
- continue;
- }
- if (ide_register_subdriver (drive, &ide_cdrom_driver, IDE_SUBDRIVER_VERSION)) {
- printk ("%s: Failed to register the driver with ide.c\n", drive->name);
- kfree (info);
- continue;
- }
- memset (info, 0, sizeof (struct cdrom_info));
- drive->driver_data = info;
- DRIVER(drive)->busy++;
- if (ide_cdrom_setup (drive)) {
- DRIVER(drive)->busy--;
- if (ide_cdrom_cleanup (drive))
- printk ("%s: ide_cdrom_cleanup failed in ide_cdrom_init\n", drive->name);
- continue;
- }
- DRIVER(drive)->busy--;
- failed--;
- }
- ide_register_module(&ide_cdrom_module);
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-module_init(ide_cdrom_init);
-module_exit(ide_cdrom_exit);
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)