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authorThomas Bushnell <thomas@gnu.org>1999-04-26 05:58:44 +0000
committerThomas Bushnell <thomas@gnu.org>1999-04-26 05:58:44 +0000
commit86297c41a26f18d924e64fc93321c59cbc4c48dd (patch)
tree376954c6b95b735d361875319a1a2a9db6a27527 /linux/src/drivers/block/ide-cd.c
parent851137902d3e7ad87af177487df3eea53e940a1c (diff)
1998-11-30 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>
Clean up linux emulation code to make it architecture-independent as much as possible. * linux: Renamed from linuxdev. * Makefile.in (objfiles): Add linux.o instead of linuxdev.o. (MAKE): New variable. Used for the linux.o target. * configure.in: Add AC_CHECK_TOOL(MAKE, make). * i386/i386/spl.h: Include <i386/ipl.h>, for compatibility with OSF Mach 3.0. Suggested by Elgin Lee <ehl@funghi.com>. * linux/src: Renamed from linux/linux. * linux/dev: Renamed from linux/mach. * linux/Drivers.in (AC_INIT): Use dev/include/linux/autoconf.h, instead of mach/include/linux/autoconf.h. * Makefile.in (all): Target ../linux.o instead of ../linuxdev.o. * linux/dev/drivers/block/genhd.c: Include <machine/spl.h> instead of <i386/ipl.h>. * linux/dev/drivers/net/auto_irq.c: Remove unneeded header files, <i386/ipl.h> and <i386/pic.h>. * linux/dev/init/main.c: Many i386-dependent codes moved to ... * linux/dev/arch/i386/irq.c: ... here. * linux/dev/arch/i386/setup.c: New file. * linux/dev/arch/i386/linux_emul.h: Likewise. * linux/dev/arch/i386/glue/timer.c: Merged into sched.c. * linux/dev/arch/i386/glue/sched.c: Include <machine/spl.h> instead of <i386/ipl.h>, and moved to ... * linux/dev/kernel/sched.c: ... here. * linux/dev/arch/i386/glue/block.c: Include <machine/spl.h> and <linux_emul.h>, instead of i386-dependent header files, and moved to ... * linux/dev/glue/blocl.c: ... here. * linux/dev/arch/i386/glue/net.c: Include <machine/spl.h> and <linux_emul.h>, instead of i386-dependent header files, and moved to ... * linux/dev/glue/net.c: ... here. * linux/dev/arch/i386/glue/misc.c: Remove `x86' and moved to ... * linux/dev/glue/misc.c: ... here. * linux/dev/arch/i386/glue/kmem.c: Moved to ... * linux/dev/glue/kmem.c: ... here.
Diffstat (limited to 'linux/src/drivers/block/ide-cd.c')
-rw-r--r--linux/src/drivers/block/ide-cd.c2775
1 files changed, 2775 insertions, 0 deletions
diff --git a/linux/src/drivers/block/ide-cd.c b/linux/src/drivers/block/ide-cd.c
new file mode 100644
index 0000000..825d942
--- /dev/null
+++ b/linux/src/drivers/block/ide-cd.c
@@ -0,0 +1,2775 @@
+/* #define VERBOSE_IDE_CD_ERRORS 1 */
+/*
+ * linux/drivers/block/ide-cd.c
+ * ATAPI cd-rom driver. To be used with ide.c.
+ * See Documentation/cdrom/ide-cd for usage information.
+ *
+ * Copyright (C) 1994, 1995, 1996 scott snyder <snyder@fnald0.fnal.gov>
+ * Copyright (C) 1996, 1997 Erik Andersen <andersee@debian.org>
+ * Copyright (C) 1998 Jens Axboe and Chris Zwilling
+ *
+ * May be copied or modified under the terms of the GNU General Public License
+ * see linux/COPYING for more information.
+ *
+ * 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@netcom.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.
+ *
+ * 3.19 Nov 5, 1996 -- New ide-cd maintainer:
+ * Erik B. Andersen <andersee@debian.org>
+ * 3.20 Jan 13,1997 -- Bug Fixes:
+ * 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
+ * 3.21 Jun 16,1997 -- Add work-around for GCD-R580B
+ *
+ * 3.22 Nov 13, 1998 -- New ide-cd maintainers:
+ * Jens Axboe <axboe@image.dk>
+ * Chris Zwilling <chris@cloudnet.com>
+ *
+ * NOTE: Direct audio reads will only work on some types of drive.
+ * So far, i've received reports of success for Sony and Toshiba drives.
+ *
+ * ALSO NOTE:
+ *
+ * The ide cdrom driver has undergone extensive changes for the
+ * latest development kernel. If you wish to add new features to
+ * this driver, make your changes to the latest version in the
+ * development kernel. Only Bug fixes will be accepted for this
+ * version.
+ *
+ * For those wishing to work on this driver, please be sure you download
+ * and comply with the latest ATAPI standard. This document can be
+ * obtained by anonymous ftp from fission.dt.wdc.com in directory:
+ * /pub/standards/atapi/spec/SFF8020-r2.6/PDF/8020r26.pdf
+ *
+ */
+
+
+/***************************************************************************/
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/malloc.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/blkdev.h>
+#include <linux/errno.h>
+#include <linux/hdreg.h>
+#include <linux/cdrom.h>
+#include <linux/ucdrom.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/byteorder.h>
+#include <asm/segment.h>
+#include <asm/unaligned.h>
+
+#include "ide.h"
+
+
+
+/* Turn this on to have the driver print out the meanings of the
+ ATAPI error codes. This will use up additional kernel-space
+ memory, though. */
+
+#ifndef VERBOSE_IDE_CD_ERRORS
+#define VERBOSE_IDE_CD_ERRORS 0
+#endif
+
+
+/* Turning this on will remove code to work around various nonstandard
+ ATAPI implementations. If you know your drive follows the standard,
+ this will give you a slightly smaller kernel. */
+
+#ifndef STANDARD_ATAPI
+#define STANDARD_ATAPI 0
+#endif
+
+
+/* Turning this on will disable the door-locking functionality.
+ This is apparently needed for supermount. */
+
+#ifndef NO_DOOR_LOCKING
+#define NO_DOOR_LOCKING 0
+#endif
+
+
+/* Size of buffer to allocate, in blocks, for audio reads. */
+
+#ifndef CDROM_NBLOCKS_BUFFER
+#define CDROM_NBLOCKS_BUFFER 8
+#endif
+
+
+/************************************************************************/
+
+#define SECTOR_SIZE 512
+#define SECTOR_BITS 9
+#define SECTORS_PER_FRAME (CD_FRAMESIZE / SECTOR_SIZE)
+
+#define MIN(a,b) ((a) < (b) ? (a) : (b))
+
+/* special command codes for strategy routine. */
+#define PACKET_COMMAND 4315
+#define REQUEST_SENSE_COMMAND 4316
+#define RESET_DRIVE_COMMAND 4317
+
+/* Some ATAPI command opcodes (just like SCSI).
+ (Some other cdrom-specific codes are in cdrom.h.) */
+#define TEST_UNIT_READY 0x00
+#define REQUEST_SENSE 0x03
+#define START_STOP 0x1b
+#define ALLOW_MEDIUM_REMOVAL 0x1e
+#define READ_CAPACITY 0x25
+#define READ_10 0x28
+#define MODE_SENSE_10 0x5a
+#define MODE_SELECT_10 0x55
+#define READ_CD 0xbe
+
+#define LOAD_UNLOAD 0xa6
+
+
+/* ATAPI sense keys (mostly copied from scsi.h). */
+
+#define NO_SENSE 0x00
+#define RECOVERED_ERROR 0x01
+#define NOT_READY 0x02
+#define MEDIUM_ERROR 0x03
+#define HARDWARE_ERROR 0x04
+#define ILLEGAL_REQUEST 0x05
+#define UNIT_ATTENTION 0x06
+#define DATA_PROTECT 0x07
+#define ABORTED_COMMAND 0x0b
+#define MISCOMPARE 0x0e
+
+/* We want some additional flags for cd-rom drives.
+ To save space in the ide_drive_t struct, use some fields which
+ doesn't make sense for cd-roms -- `bios_sect' and `bios_head'. */
+
+/* Configuration flags. These describe the capabilities of the drive.
+ They generally do not change after initialization, unless we learn
+ more about the drive from stuff failing. */
+struct ide_cd_config_flags {
+ __u8 drq_interrupt : 1; /* Device sends an interrupt when ready
+ for a packet command. */
+ __u8 no_doorlock : 1; /* Drive cannot lock the door. */
+#if ! STANDARD_ATAPI
+ __u8 old_readcd : 1; /* Drive uses old READ CD opcode. */
+ __u8 playmsf_as_bcd : 1; /* PLAYMSF command takes BCD args. */
+ __u8 tocaddr_as_bcd : 1; /* TOC addresses are in BCD. */
+ __u8 toctracks_as_bcd : 1; /* TOC track numbers are in BCD. */
+ __u8 subchan_as_bcd : 1; /* Subchannel info is in BCD. */
+#endif /* not STANDARD_ATAPI */
+ __u8 reserved : 1;
+};
+#define CDROM_CONFIG_FLAGS(drive) ((struct ide_cd_config_flags *)&((drive)->bios_sect))
+
+
+/* State flags. These give information about the current state of the
+ drive, and will change during normal operation. */
+struct ide_cd_state_flags {
+ __u8 media_changed : 1; /* Driver has noticed a media change. */
+ __u8 toc_valid : 1; /* Saved TOC information is current. */
+ __u8 door_locked : 1; /* We think that the drive door is locked. */
+ __u8 eject_on_close: 1; /* Drive should eject when device is closed. */
+ __u8 sanyo_slot : 2; /* Sanyo 3 CD changer support */
+ __u8 reserved : 2;
+};
+#define CDROM_STATE_FLAGS(drive) ((struct ide_cd_state_flags *)&((drive)->bios_head))
+
+
+#define SECTOR_BUFFER_SIZE CD_FRAMESIZE
+
+
+
+/****************************************************************************
+ * Routines to read and write data from/to the drive, using
+ * the routines input_ide_data() and output_ide_data() from ide.c.
+ *
+ * These routines will round up any request for an odd number of bytes,
+ * so if an odd bytecount is specified, be sure that there's at least one
+ * extra byte allocated for the buffer.
+ */
+
+
+static inline
+void cdrom_in_bytes (ide_drive_t *drive, void *buffer, uint bytecount)
+{
+ ++bytecount;
+ ide_input_data (drive, buffer, bytecount / 4);
+ if ((bytecount & 0x03) >= 2) {
+ insw (IDE_DATA_REG, ((byte *)buffer) + (bytecount & ~0x03), 1);
+ }
+}
+
+
+static inline
+void cdrom_out_bytes (ide_drive_t *drive, void *buffer, uint bytecount)
+{
+ ++bytecount;
+ ide_output_data (drive, buffer, bytecount / 4);
+ if ((bytecount & 0x03) >= 2) {
+ outsw (IDE_DATA_REG,
+ ((byte *)buffer) + (bytecount & ~0x03), 1);
+ }
+}
+
+
+
+/****************************************************************************
+ * Descriptions of ATAPI error codes.
+ */
+
+#define ARY_LEN(a) ((sizeof(a) / sizeof(a[0])))
+
+#if VERBOSE_IDE_CD_ERRORS
+
+/* From Table 124 of the ATAPI 1.2 spec. */
+
+char *sense_key_texts[16] = {
+ "No sense data",
+ "Recovered error",
+ "Not ready",
+ "Medium error",
+ "Hardware error",
+ "Illegal request",
+ "Unit attention",
+ "Data protect",
+ "(reserved)",
+ "(reserved)",
+ "(reserved)",
+ "Aborted command",
+ "(reserved)",
+ "(reserved)",
+ "Miscompare",
+ "(reserved)",
+};
+
+
+/* From Table 125 of the ATAPI 1.2 spec. */
+
+struct {
+ short asc_ascq;
+ char *text;
+} sense_data_texts[] = {
+ { 0x0000, "No additional sense information" },
+ { 0x0011, "Audio play operation in progress" },
+ { 0x0012, "Audio play operation paused" },
+ { 0x0013, "Audio play operation successfully completed" },
+ { 0x0014, "Audio play operation stopped due to error" },
+ { 0x0015, "No current audio status to return" },
+
+ { 0x0200, "No seek complete" },
+
+ { 0x0400, "Logical unit not ready - cause not reportable" },
+ { 0x0401,
+ "Logical unit not ready - in progress (sic) of becoming ready" },
+ { 0x0402, "Logical unit not ready - initializing command required" },
+ { 0x0403, "Logical unit not ready - manual intervention required" },
+
+ { 0x0600, "No reference position found" },
+
+ { 0x0900, "Track following error" },
+ { 0x0901, "Tracking servo failure" },
+ { 0x0902, "Focus servo failure" },
+ { 0x0903, "Spindle servo failure" },
+
+ { 0x1100, "Unrecovered read error" },
+ { 0x1106, "CIRC unrecovered error" },
+
+ { 0x1500, "Random positioning error" },
+ { 0x1501, "Mechanical positioning error" },
+ { 0x1502, "Positioning error detected by read of medium" },
+
+ { 0x1700, "Recovered data with no error correction applied" },
+ { 0x1701, "Recovered data with retries" },
+ { 0x1702, "Recovered data with positive head offset" },
+ { 0x1703, "Recovered data with negative head offset" },
+ { 0x1704, "Recovered data with retries and/or CIRC applied" },
+ { 0x1705, "Recovered data using previous sector ID" },
+
+ { 0x1800, "Recovered data with error correction applied" },
+ { 0x1801, "Recovered data with error correction and retries applied" },
+ { 0x1802, "Recovered data - the data was auto-reallocated" },
+ { 0x1803, "Recovered data with CIRC" },
+ { 0x1804, "Recovered data with L-EC" },
+ { 0x1805, "Recovered data - recommend reassignment" },
+ { 0x1806, "Recovered data - recommend rewrite" },
+
+ { 0x1a00, "Parameter list length error" },
+
+ { 0x2000, "Invalid command operation code" },
+
+ { 0x2100, "Logical block address out of range" },
+
+ { 0x2400, "Invalid field in command packet" },
+
+ { 0x2600, "Invalid field in parameter list" },
+ { 0x2601, "Parameter not supported" },
+ { 0x2602, "Parameter value invalid" },
+ { 0x2603, "Threshold parameters not supported" },
+
+ { 0x2800, "Not ready to ready transition, medium may have changed" },
+
+ { 0x2900, "Power on, reset or bus device reset occurred" },
+
+ { 0x2a00, "Parameters changed" },
+ { 0x2a01, "Mode parameters changed" },
+
+ { 0x3000, "Incompatible medium installed" },
+ { 0x3001, "Cannot read medium - unknown format" },
+ { 0x3002, "Cannot read medium - incompatible format" },
+
+ { 0x3700, "Rounded parameter" },
+
+ { 0x3900, "Saving parameters not supported" },
+
+ { 0x3a00, "Medium not present" },
+
+ { 0x3f00, "ATAPI CD-ROM drive operating conditions have changed" },
+ { 0x3f01, "Microcode has been changed" },
+ { 0x3f02, "Changed operating definition" },
+ { 0x3f03, "Inquiry data has changed" },
+
+ { 0x4000, "Diagnostic failure on component (ASCQ)" },
+
+ { 0x4400, "Internal ATAPI CD-ROM drive failure" },
+
+ { 0x4e00, "Overlapped commands attempted" },
+
+ { 0x5300, "Media load or eject failed" },
+ { 0x5302, "Medium removal prevented" },
+
+ { 0x5700, "Unable to recover table of contents" },
+
+ { 0x5a00, "Operator request or state change input (unspecified)" },
+ { 0x5a01, "Operator medium removal request" },
+
+ { 0x5b00, "Threshold condition met" },
+
+ { 0x5c00, "Status change" },
+
+ { 0x6300, "End of user area encountered on this track" },
+
+ { 0x6400, "Illegal mode for this track" },
+
+ { 0xbf00, "Loss of streaming" },
+};
+#endif
+
+
+
+/****************************************************************************
+ * Generic packet command support and error handling routines.
+ */
+
+
+static
+void cdrom_analyze_sense_data (ide_drive_t *drive,
+ struct atapi_request_sense *reqbuf,
+ struct packet_command *failed_command)
+{
+ /* 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] == SCMD_READ_SUBCHANNEL &&
+ (reqbuf->sense_key == NOT_READY ||
+ reqbuf->sense_key == UNIT_ATTENTION))
+ return;
+
+#if VERBOSE_IDE_CD_ERRORS
+ {
+ int i;
+ char *s;
+ char buf[80];
+
+ printk ("ATAPI device %s:\n", drive->name);
+
+ printk (" Error code: 0x%02x\n", reqbuf->error_code);
+
+ if (reqbuf->sense_key >= 0 &&
+ reqbuf->sense_key < ARY_LEN (sense_key_texts))
+ s = sense_key_texts[reqbuf->sense_key];
+ else
+ s = "(bad sense key)";
+
+ printk (" Sense key: 0x%02x - %s\n", reqbuf->sense_key, s);
+
+ if (reqbuf->asc == 0x40) {
+ sprintf (buf, "Diagnostic failure on component 0x%02x",
+ reqbuf->ascq);
+ s = buf;
+ } else {
+ int lo, hi;
+ int key = (reqbuf->asc << 8);
+ if ( ! (reqbuf->ascq >= 0x80 && reqbuf->ascq <= 0xdd) )
+ key |= reqbuf->ascq;
+
+ lo = 0;
+ hi = ARY_LEN (sense_data_texts);
+ s = NULL;
+
+ while (hi > lo) {
+ int mid = (lo + hi) / 2;
+ if (sense_data_texts[mid].asc_ascq == 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 (" Additional sense data: 0x%02x, 0x%02x - %s\n",
+ reqbuf->asc, reqbuf->ascq, s);
+
+ if (failed_command != NULL) {
+ printk (" Failed packet command: ");
+ for (i=0; i<sizeof (failed_command->c); i++)
+ printk ("%02x ", failed_command->c[i]);
+ printk ("\n");
+ }
+
+ if (reqbuf->sense_key == ILLEGAL_REQUEST &&
+ (reqbuf->sense_key_specific[0] & 0x80) != 0) {
+ printk (" Error in %s byte %d",
+ (reqbuf->sense_key_specific[0] & 0x40) != 0
+ ? "command packet"
+ : "command data",
+ (reqbuf->sense_key_specific[1] << 8) +
+ reqbuf->sense_key_specific[2]);
+
+ if ((reqbuf->sense_key_specific[0] & 0x40) != 0) {
+ printk (" bit %d",
+ reqbuf->sense_key_specific[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: code: 0x%02x 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 */
+}
+
+
+/* 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;
+}
+
+
+static void cdrom_queue_request_sense (ide_drive_t *drive,
+ struct semaphore *sem,
+ struct atapi_request_sense *reqbuf,
+ struct packet_command *failed_command)
+{
+ struct request *rq;
+ struct packet_command *pc;
+ int len;
+
+ /* If the request didn't explicitly specify where
+ to put the sense data, use the statically allocated structure. */
+ if (reqbuf == NULL)
+ reqbuf = &drive->cdrom_info.sense_data;
+
+ /* Make up a new request to retrieve sense information. */
+
+ pc = &HWIF(drive)->request_sense_pc;
+ memset (pc, 0, sizeof (*pc));
+
+ /* The request_sense structure has an odd number of (16-bit) words,
+ which won't work well with 32-bit transfers. However, we don't care
+ about the last two bytes, so just truncate the structure down
+ to an even length. */
+ len = sizeof (*reqbuf) / 4;
+ len *= 4;
+
+ pc->c[0] = REQUEST_SENSE;
+ pc->c[4] = len;
+ pc->buffer = (char *)reqbuf;
+ pc->buflen = len;
+ pc->sense_data = (struct atapi_request_sense *)failed_command;
+
+ /* stuff the sense request in front of our current request */
+
+ rq = &HWIF(drive)->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 atapi_request_sense *)
+ (pc->buffer - pc->c[4]),
+ (struct packet_command *)
+ pc->sense_data);
+ }
+
+ ide_end_request (uptodate, HWGROUP(drive));
+}
+
+
+/* Mark that we've seen a media change, and invalidate our internal
+ buffers. */
+static void cdrom_saw_media_change (ide_drive_t *drive)
+{
+ CDROM_STATE_FLAGS (drive)->media_changed = 1;
+ CDROM_STATE_FLAGS (drive)->toc_valid = 0;
+ drive->cdrom_info.nsectors_buffered = 0;
+}
+
+
+/* Returns 0 if the request should be continued.
+ Returns 1 if the request was ended. */
+static int cdrom_decode_status (ide_drive_t *drive, int good_stat,
+ int *stat_ret)
+{
+ struct request *rq = HWGROUP(drive)->rq;
+ int stat, err, sense_key, cmd;
+
+ /* Check for errors. */
+ stat = GET_STAT();
+ *stat_ret = stat;
+
+ if (OK_STAT (stat, good_stat, BAD_R_STAT))
+ return 0;
+
+ /* Got an error. */
+ err = IN_BYTE (IDE_ERROR_REG);
+ 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. */
+
+ struct packet_command *pc = (struct packet_command *)
+ rq->buffer;
+ pc->stat = 1;
+ cdrom_end_request (1, drive);
+ ide_error (drive, "request sense failure", stat);
+ return 1;
+
+ } else if (cmd == PACKET_COMMAND) {
+ /* All other functions, except for READ. */
+
+ struct packet_command *pc = (struct packet_command *)
+ rq->buffer;
+ struct semaphore *sem = NULL;
+
+ /* Check for tray open. */
+ if (sense_key == NOT_READY) {
+ cdrom_saw_media_change (drive);
+
+ /* Print an error message to the syslog.
+ Exception: don't print anything if this
+ is a read subchannel command. This is
+ because workman constantly polls the drive
+ with this command, and we don't want
+ to uselessly fill up the syslog. */
+ if (pc->c[0] != SCMD_READ_SUBCHANNEL)
+ printk ("%s : tray open or drive not ready\n",
+ drive->name);
+ } else if (sense_key == UNIT_ATTENTION) {
+ /* Check for media change. */
+ cdrom_saw_media_change (drive);
+ printk ("%s: media changed\n", drive->name);
+ } 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->sense_data, 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. */
+ 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, NULL);
+ }
+ }
+
+ /* Retry, or handle the next request. */
+ return 1;
+}
+
+
+/* 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 int cdrom_start_packet_command (ide_drive_t *drive, int xferlen,
+ ide_handler_t *handler)
+{
+ /* Wait for the controller to be idle. */
+ if (ide_wait_stat (drive, 0, BUSY_STAT, WAIT_READY)) return 1;
+
+ /* Set up the controller registers. */
+ OUT_BYTE (0, 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);
+ OUT_BYTE (drive->ctl, IDE_CONTROL_REG);
+
+ if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
+ ide_set_handler (drive, handler, WAIT_CMD);
+ OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG); /* packet command */
+ } else {
+ OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG); /* packet command */
+ (*handler) (drive);
+ }
+
+ return 0;
+}
+
+
+/* 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 int cdrom_transfer_packet_command (ide_drive_t *drive,
+ 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;
+
+ /* Check for errors. */
+ if (cdrom_decode_status (drive, DRQ_STAT, &stat_dum)) return 1;
+ } else {
+ /* Otherwise, we must wait for DRQ to get set. */
+ if (ide_wait_stat (drive, DRQ_STAT, BUSY_STAT, WAIT_READY))
+ return 1;
+ }
+
+ /* Arm the interrupt handler. */
+ ide_set_handler (drive, handler, WAIT_CMD);
+
+ /* Send the command to the device. */
+ cdrom_out_bytes (drive, cmd_buf, cmd_len);
+
+ return 0;
+}
+
+
+
+/****************************************************************************
+ * 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->cdrom_info;
+
+ /* 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 don't yet have a sector buffer, try to allocate one.
+ If we can't get one atomically, it's not fatal -- we'll just throw
+ the data away rather than caching it. */
+ if (info->sector_buffer == NULL) {
+ info->sector_buffer = (char *) kmalloc (SECTOR_BUFFER_SIZE,
+ GFP_ATOMIC);
+
+ /* If we couldn't get a buffer,
+ don't try to buffer anything... */
+ if (info->sector_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->sector_buffer + info->nsectors_buffered * SECTOR_SIZE;
+ while (sectors_to_buffer > 0) {
+ cdrom_in_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];
+ cdrom_in_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;
+ cdrom_out_bytes (drive, &dum, sizeof (dum));
+ len -= sizeof (dum);
+ }
+ } 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 void cdrom_read_intr (ide_drive_t *drive)
+{
+ int stat;
+ int ireason, len, sectors_to_transfer, nskip;
+
+ struct request *rq = HWGROUP(drive)->rq;
+
+ /* Check for errors. */
+ if (cdrom_decode_status (drive, 0, &stat)) return;
+
+ /* 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;
+ }
+
+ /* Check that the drive is expecting to do the same thing we are. */
+ if (cdrom_read_check_ireason (drive, len, ireason)) return;
+
+ /* 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);
+ printk (" This drive is not supported by this version of the driver\n");
+ cdrom_end_request (0, drive);
+ return;
+ }
+
+ /* 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];
+ cdrom_in_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) {
+ cdrom_in_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);
+}
+
+
+/*
+ * 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->cdrom_info;
+ struct request *rq = HWGROUP(drive)->rq;
+
+ /* Can't do anything if there's no buffer. */
+ if (info->sector_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->sector_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 void 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;
+
+#if !STANDARD_ATAPI
+ if (nsect > drive->cdrom_info.max_sectors)
+ nsect = drive->cdrom_info.max_sectors;
+#endif /* not STANDARD_ATAPI */
+
+ /* 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)) {
+ printk ("%s: cdrom_start_read_continuation: buffer botch (%ld)\n",
+ drive->name, rq->current_nr_sectors);
+ cdrom_end_request (0, drive);
+ return;
+ }
+
+ 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. */
+ nframes = MIN (nframes, 65535);
+
+ /* Set up the command */
+ memset (&pc.c, 0, sizeof (pc.c));
+ pc.c[0] = 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. */
+ (void) cdrom_transfer_packet_command (drive, pc.c, sizeof (pc.c),
+ &cdrom_read_intr);
+}
+
+
+/*
+ * Start a read request from the CD-ROM.
+ */
+static void cdrom_start_read (ide_drive_t *drive, unsigned int block)
+{
+ 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;
+
+ /* Clear the local sector buffer. */
+ drive->cdrom_info.nsectors_buffered = 0;
+
+ /* Start sending the read request to the drive. */
+ 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,
+ struct atapi_request_sense *reqbuf);
+
+
+
+/* Interrupt routine for packet command completion. */
+static void 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;
+
+ /* Check for errors. */
+ if (cdrom_decode_status (drive, 0, &stat)) return;
+
+ /* 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] == 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 {
+ printk ("%s: cdrom_pc_intr: data underrun %d\n",
+ drive->name, pc->buflen);
+ pc->stat = 1;
+ cdrom_end_request (1, drive);
+ }
+ return;
+ }
+
+ /* Figure out how much data to transfer. */
+ thislen = pc->buflen;
+ if (thislen < 0) thislen = -thislen;
+ if (thislen > len) thislen = len;
+
+ /* The drive wants to be written to. */
+ if ((ireason & 3) == 0) {
+ /* Check that we want to write. */
+ if (pc->buflen > 0) {
+ printk ("%s: cdrom_pc_intr: Drive wants "
+ "to transfer data the wrong way!\n",
+ drive->name);
+ pc->stat = 1;
+ thislen = 0;
+ }
+
+ /* Transfer the data. */
+ cdrom_out_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;
+ cdrom_out_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) {
+ /* Check that we want to read. */
+ if (pc->buflen < 0) {
+ printk ("%s: cdrom_pc_intr: Drive wants to "
+ "transfer data the wrong way!\n",
+ drive->name);
+ pc->stat = 1;
+ thislen = 0;
+ }
+
+ /* Transfer the data. */
+ cdrom_in_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;
+ cdrom_in_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);
+}
+
+
+static void 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. */
+ cdrom_transfer_packet_command (drive, pc->c,
+ sizeof (pc->c), &cdrom_pc_intr);
+}
+
+
+static void 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;
+
+ len = pc->buflen;
+ if (len < 0) len = -len;
+
+ pc->stat = 0;
+
+ /* Start sending the command to the drive. */
+ 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;
+ current->timeout = jiffies + time;
+ schedule ();
+}
+
+static
+int cdrom_queue_packet_command (ide_drive_t *drive, struct packet_command *pc)
+{
+ struct atapi_request_sense my_reqbuf;
+ int retries = 10;
+ struct request req;
+
+ /* If our caller has not provided a place to stick any sense data,
+ use our own area. */
+ if (pc->sense_data == NULL)
+ pc->sense_data = &my_reqbuf;
+ pc->sense_data->sense_key = 0;
+
+ /* Start of retry loop. */
+ do {
+ ide_init_drive_cmd (&req);
+ req.cmd = PACKET_COMMAND;
+ req.buffer = (char *)pc;
+ (void) ide_do_drive_cmd (drive, &req, ide_wait);
+
+ if (pc->stat != 0) {
+ /* The request failed. Retry if it was due to a unit
+ attention status
+ (usually means media was changed). */
+ struct atapi_request_sense *reqbuf = pc->sense_data;
+
+ if (reqbuf->sense_key == UNIT_ATTENTION)
+ ;
+ else if (reqbuf->sense_key == NOT_READY &&
+ reqbuf->asc == 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 != 0)
+ return -EIO;
+ else {
+ /* 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, lock it again.
+ (The door was probably unlocked via an explicit
+ CDROMEJECT ioctl.) */
+ if (CDROM_STATE_FLAGS (drive)->door_locked == 0 &&
+ (pc->c[0] != REQUEST_SENSE &&
+ pc->c[0] != ALLOW_MEDIUM_REMOVAL &&
+ pc->c[0] != START_STOP)) {
+ (void) cdrom_lockdoor (drive, 1, NULL);
+ }
+ return 0;
+ }
+}
+
+
+/****************************************************************************
+ * cdrom driver request routine.
+ */
+
+void ide_do_rw_cdrom (ide_drive_t *drive, unsigned long block)
+{
+ struct request *rq = HWGROUP(drive)->rq;
+
+ if (rq -> cmd == PACKET_COMMAND || rq -> cmd == REQUEST_SENSE_COMMAND)
+ cdrom_do_packet_command (drive);
+ else if (rq -> cmd == RESET_DRIVE_COMMAND) {
+ cdrom_end_request (1, drive);
+ ide_do_reset (drive);
+ return;
+ } else if (rq -> cmd != READ) {
+ printk ("ide-cd: bad cmd %d\n", rq -> cmd);
+ cdrom_end_request (0, drive);
+ } else
+ cdrom_start_read (drive, block);
+}
+
+
+
+/****************************************************************************
+ * Ioctl handling.
+ *
+ * Routines which queue packet commands take as a final argument a pointer
+ * to an atapi_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_BLOCK_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_BLOCK_OFFSET;
+}
+
+
+static int
+cdrom_check_status (ide_drive_t *drive,
+ struct atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+
+ pc.sense_data = reqbuf;
+ pc.c[0] = TEST_UNIT_READY;
+
+ /* 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] = CDROM_STATE_FLAGS (drive)->sanyo_slot % 3;
+
+ 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 atapi_request_sense *reqbuf)
+{
+ struct atapi_request_sense my_reqbuf;
+ int stat;
+ struct packet_command pc;
+
+ if (reqbuf == NULL)
+ reqbuf = &my_reqbuf;
+
+ /* 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.sense_data = reqbuf;
+
+ pc.c[0] = ALLOW_MEDIUM_REMOVAL;
+ pc.c[4] = (lockflag != 0);
+ stat = cdrom_queue_packet_command (drive, &pc);
+ }
+
+ if (stat == 0)
+ CDROM_STATE_FLAGS (drive)->door_locked = lockflag;
+ else {
+ /* If we got an illegal field error, the drive
+ probably cannot lock the door. */
+ if (reqbuf->sense_key == ILLEGAL_REQUEST &&
+ (reqbuf->asc == 0x24 || reqbuf->asc == 0x20)) {
+ printk ("%s: door locking not supported\n",
+ drive->name);
+ CDROM_CONFIG_FLAGS (drive)->no_doorlock = 1;
+ 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 atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.c[0] = START_STOP;
+ pc.c[4] = 2 + (ejectflag != 0);
+ return cdrom_queue_packet_command (drive, &pc);
+}
+
+
+static int
+cdrom_pause (ide_drive_t *drive, int pauseflag,
+ struct atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.c[0] = SCMD_PAUSE_RESUME;
+ pc.c[8] = !pauseflag;
+ return cdrom_queue_packet_command (drive, &pc);
+}
+
+
+static int
+cdrom_startstop (ide_drive_t *drive, int startflag,
+ struct atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.c[0] = START_STOP;
+ pc.c[1] = 1;
+ pc.c[4] = startflag;
+ return cdrom_queue_packet_command (drive, &pc);
+}
+
+
+static int
+cdrom_read_capacity (ide_drive_t *drive, unsigned *capacity,
+ struct atapi_request_sense *reqbuf)
+{
+ struct {
+ unsigned lba;
+ unsigned blocklen;
+ } capbuf;
+
+ int stat;
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.c[0] = READ_CAPACITY;
+ pc.buffer = (char *)&capbuf;
+ pc.buflen = sizeof (capbuf);
+
+ stat = cdrom_queue_packet_command (drive, &pc);
+ if (stat == 0)
+ *capacity = ntohl (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 atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.buffer = buf;
+ pc.buflen = buflen;
+ pc.c[0] = SCMD_READ_TOC;
+ 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,
+ struct atapi_request_sense *reqbuf)
+{
+ int stat, ntracks, i;
+ struct atapi_toc *toc = drive->cdrom_info.toc;
+ 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);
+ drive->cdrom_info.toc = toc;
+ }
+
+ if (toc == NULL) {
+ printk ("%s: No cdrom TOC buffer!\n", drive->name);
+ return -EIO;
+ }
+
+ /* 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, NULL);
+
+ 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) +
+ sizeof (struct atapi_toc_entry),
+ reqbuf);
+ 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, 0, 1, 0, (char *)&toc->hdr,
+ sizeof (struct atapi_toc_header) +
+ (ntracks+1) *
+ sizeof (struct atapi_toc_entry),
+ reqbuf);
+ 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. */
+ stat = cdrom_read_tocentry (drive, 0, 1, 1,
+ (char *)&ms_tmp, sizeof (ms_tmp),
+ reqbuf);
+ if (stat) return stat;
+
+#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. */
+ stat = cdrom_read_capacity (drive, &toc->capacity, reqbuf);
+ if (stat) toc->capacity = 0x1fffff;
+
+ HWIF(drive)->gd->sizes[drive->select.b.unit << PARTN_BITS]
+ = toc->capacity * SECTORS_PER_FRAME;
+ drive->part[0].nr_sects = toc->capacity * SECTORS_PER_FRAME;
+
+ /* Remember that we've read this stuff. */
+ CDROM_STATE_FLAGS (drive)->toc_valid = 1;
+
+ return 0;
+}
+
+
+static int
+cdrom_read_subchannel (ide_drive_t *drive, int format,
+ char *buf, int buflen,
+ struct atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.buffer = buf;
+ pc.buflen = buflen;
+ pc.c[0] = SCMD_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);
+}
+
+
+/* modeflag: 0 = current, 1 = changeable mask, 2 = default, 3 = saved */
+static int
+cdrom_mode_sense (ide_drive_t *drive, int pageno, int modeflag,
+ char *buf, int buflen,
+ struct atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.buffer = buf;
+ pc.buflen = buflen;
+ pc.c[0] = MODE_SENSE_10;
+ pc.c[2] = pageno | (modeflag << 6);
+ pc.c[7] = (buflen >> 8);
+ pc.c[8] = (buflen & 0xff);
+ return cdrom_queue_packet_command (drive, &pc);
+}
+
+
+static int
+cdrom_mode_select (ide_drive_t *drive, int pageno, char *buf, int buflen,
+ struct atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.buffer = buf;
+ pc.buflen = - buflen;
+ pc.c[0] = MODE_SELECT_10;
+ pc.c[1] = 0x10;
+ pc.c[2] = pageno;
+ pc.c[7] = (buflen >> 8);
+ pc.c[8] = (buflen & 0xff);
+ return cdrom_queue_packet_command (drive, &pc);
+}
+
+
+static int
+cdrom_play_lba_range_1 (ide_drive_t *drive, int lba_start, int lba_end,
+ struct atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.c[0] = SCMD_PLAYAUDIO_MSF;
+ lba_to_msf (lba_start, &pc.c[3], &pc.c[4], &pc.c[5]);
+ lba_to_msf (lba_end-1, &pc.c[6], &pc.c[7], &pc.c[8]);
+
+#if ! STANDARD_ATAPI
+ if (CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd) {
+ pc.c[3] = bin2bcd (pc.c[3]);
+ pc.c[4] = bin2bcd (pc.c[4]);
+ pc.c[5] = bin2bcd (pc.c[5]);
+ pc.c[6] = bin2bcd (pc.c[6]);
+ pc.c[7] = bin2bcd (pc.c[7]);
+ pc.c[8] = bin2bcd (pc.c[8]);
+ }
+#endif /* not STANDARD_ATAPI */
+
+ return cdrom_queue_packet_command (drive, &pc);
+}
+
+
+/* Play audio starting at LBA LBA_START and finishing with the
+ LBA before LBA_END. */
+static int
+cdrom_play_lba_range (ide_drive_t *drive, int lba_start, int lba_end,
+ struct atapi_request_sense *reqbuf)
+{
+ int i, stat;
+ struct atapi_request_sense my_reqbuf;
+
+ if (reqbuf == NULL)
+ reqbuf = &my_reqbuf;
+
+ /* Some drives, will, for certain audio cds,
+ give an error if you ask them to play the entire cd using the
+ values which are returned in the TOC. The play will succeed,
+ however, if the ending address is adjusted downwards
+ by a few frames. */
+ for (i=0; i<75; i++) {
+ stat = cdrom_play_lba_range_1 (drive, lba_start, lba_end,
+ reqbuf);
+
+ if (stat == 0 ||
+ !(reqbuf->sense_key == ILLEGAL_REQUEST &&
+ reqbuf->asc == 0x24))
+ return stat;
+
+ --lba_end;
+ if (lba_end <= lba_start) break;
+ }
+
+ return stat;
+}
+
+
+static
+int cdrom_get_toc_entry (ide_drive_t *drive, int track,
+ struct atapi_toc_entry **ent,
+ struct atapi_request_sense *reqbuf)
+{
+ int stat, ntracks;
+ struct atapi_toc *toc;
+
+ /* Make sure our saved TOC is valid. */
+ stat = cdrom_read_toc (drive, reqbuf);
+ if (stat) return stat;
+
+ toc = drive->cdrom_info.toc;
+
+ /* Check validity of requested track number. */
+ ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
+ 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;
+}
+
+
+static int
+cdrom_read_block (ide_drive_t *drive, int format, int lba, int nblocks,
+ char *buf, int buflen,
+ struct atapi_request_sense *reqbuf)
+{
+ struct packet_command pc;
+ struct atapi_request_sense my_reqbuf;
+ int stat;
+
+ if (reqbuf == NULL)
+ reqbuf = &my_reqbuf;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.buffer = buf;
+ pc.buflen = buflen;
+
+#if ! STANDARD_ATAPI
+ if (CDROM_CONFIG_FLAGS (drive)->old_readcd)
+ pc.c[0] = 0xd4;
+ else
+#endif /* not STANDARD_ATAPI */
+ pc.c[0] = READ_CD;
+
+ pc.c[1] = (format << 2);
+ put_unaligned(htonl(lba), (unsigned int *) &pc.c[2]);
+ pc.c[8] = (nblocks & 0xff);
+ pc.c[7] = ((nblocks>>8) & 0xff);
+ pc.c[6] = ((nblocks>>16) & 0xff);
+ if (format <= 1)
+ pc.c[9] = 0xf8;
+ else
+ pc.c[9] = 0x10;
+
+ stat = cdrom_queue_packet_command (drive, &pc);
+
+#if ! STANDARD_ATAPI
+ /* If the drive doesn't recognize the READ CD opcode, retry the command
+ with an older opcode for that command. */
+ if (stat && reqbuf->sense_key == ILLEGAL_REQUEST &&
+ reqbuf->asc == 0x20 &&
+ CDROM_CONFIG_FLAGS (drive)->old_readcd == 0) {
+ printk ("%s: Drive does not recognize READ_CD;"
+ "trying opcode 0xd4\n",
+ drive->name);
+ CDROM_CONFIG_FLAGS (drive)->old_readcd = 1;
+ return cdrom_read_block (drive, format, lba, nblocks,
+ buf, buflen, reqbuf);
+ }
+#endif /* not STANDARD_ATAPI */
+
+ return stat;
+}
+
+
+/* If SLOT<0, unload the current slot. Otherwise, try to load SLOT. */
+static int
+cdrom_load_unload (ide_drive_t *drive, int slot,
+ struct atapi_request_sense *reqbuf)
+{
+ /* if the drive is a Sanyo 3 CD changer then TEST_UNIT_READY
+ (used in the cdrom_check_status function) is used to
+ switch CDs instead of LOAD_UNLOAD */
+
+ if (CDROM_STATE_FLAGS (drive)->sanyo_slot > 0) {
+
+ if ((slot == 1) || (slot == 2)) {
+ CDROM_STATE_FLAGS (drive)->sanyo_slot = slot;
+ } else if (slot >= 0) {
+ CDROM_STATE_FLAGS (drive)->sanyo_slot = 3;
+ } else {
+ return 0;
+ }
+
+ return cdrom_check_status (drive, NULL);
+
+ } else {
+
+ /* ATAPI Rev. 2.2+ standard for requesting switching of
+ CDs in a multiplatter device */
+
+ struct packet_command pc;
+
+ memset (&pc, 0, sizeof (pc));
+ pc.sense_data = reqbuf;
+
+ pc.c[0] = LOAD_UNLOAD;
+ pc.c[4] = 2 + (slot >= 0);
+ pc.c[8] = slot;
+ return cdrom_queue_packet_command (drive, &pc);
+
+ }
+}
+
+
+int ide_cdrom_ioctl (ide_drive_t *drive, struct inode *inode,
+ struct file *file, unsigned int cmd, unsigned long arg)
+{
+ switch (cmd) {
+ case CDROMEJECT: {
+ int stat;
+
+ if (drive->usage > 1)
+ return -EBUSY;
+
+ stat = cdrom_lockdoor (drive, 0, NULL);
+ if (stat) return stat;
+
+ return cdrom_eject (drive, 0, NULL);
+ }
+
+ case CDROMCLOSETRAY: {
+ int stat;
+ if (drive->usage > 1)
+ return -EBUSY;
+
+ stat = cdrom_eject (drive, 1, NULL);
+ if (stat) return stat;
+
+ return cdrom_lockdoor (drive, 1, NULL);
+ }
+
+ case CDROMEJECT_SW: {
+ CDROM_STATE_FLAGS (drive)->eject_on_close = arg;
+ return 0;
+ }
+
+ case CDROMPAUSE:
+ return cdrom_pause (drive, 1, NULL);
+
+ case CDROMRESUME:
+ return cdrom_pause (drive, 0, NULL);
+
+ case CDROMSTART:
+ return cdrom_startstop (drive, 1, NULL);
+
+ case CDROMSTOP: {
+#ifdef IHAVEADOLPHIN
+ /* Certain Drives require this. Most don't
+ and will produce errors upon CDROMSTOP
+ pit says the Dolphin needs this. If you
+ own a dolphin, just define IHAVEADOLPHIN somewhere */
+ int stat;
+ stat = cdrom_startstop (drive, 0, NULL);
+ if (stat) return stat;
+ return cdrom_eject (drive, 1, NULL);
+#endif /* end of IHAVEADOLPHIN */
+ return cdrom_startstop (drive, 0, NULL);
+ }
+
+ case CDROMPLAYMSF: {
+ struct cdrom_msf msf;
+ int stat, lba_start, lba_end;
+
+ stat = verify_area (VERIFY_READ, (void *)arg, sizeof (msf));
+ if (stat) return stat;
+
+ memcpy_fromfs (&msf, (void *) arg, sizeof(msf));
+
+ lba_start = msf_to_lba (msf.cdmsf_min0, msf.cdmsf_sec0,
+ msf.cdmsf_frame0);
+ lba_end = msf_to_lba (msf.cdmsf_min1, msf.cdmsf_sec1,
+ msf.cdmsf_frame1) + 1;
+
+ if (lba_end <= lba_start) return -EINVAL;
+
+ return cdrom_play_lba_range (drive, lba_start, lba_end, NULL);
+ }
+
+ /* Like just about every other Linux cdrom driver, we ignore the
+ index part of the request here. */
+ case CDROMPLAYTRKIND: {
+ int stat, lba_start, lba_end;
+ struct cdrom_ti ti;
+ struct atapi_toc_entry *first_toc, *last_toc;
+
+ stat = verify_area (VERIFY_READ, (void *)arg, sizeof (ti));
+ if (stat) return stat;
+
+ memcpy_fromfs (&ti, (void *) arg, sizeof(ti));
+
+ stat = cdrom_get_toc_entry (drive, ti.cdti_trk0, &first_toc,
+ NULL);
+ if (stat) return stat;
+ stat = cdrom_get_toc_entry (drive, ti.cdti_trk1, &last_toc,
+ NULL);
+ if (stat) return stat;
+
+ if (ti.cdti_trk1 != CDROM_LEADOUT) ++last_toc;
+ lba_start = first_toc->addr.lba;
+ lba_end = last_toc->addr.lba;
+
+ if (lba_end <= lba_start) return -EINVAL;
+
+ return cdrom_play_lba_range (drive, lba_start, lba_end, NULL);
+ }
+
+ case CDROMREADTOCHDR: {
+ int stat;
+ struct cdrom_tochdr tochdr;
+ struct atapi_toc *toc;
+
+ stat = verify_area (VERIFY_WRITE, (void *) arg,
+ sizeof (tochdr));
+ if (stat) return stat;
+
+ /* Make sure our saved TOC is valid. */
+ stat = cdrom_read_toc (drive, NULL);
+ if (stat) return stat;
+
+ toc = drive->cdrom_info.toc;
+ tochdr.cdth_trk0 = toc->hdr.first_track;
+ tochdr.cdth_trk1 = toc->hdr.last_track;
+
+ memcpy_tofs ((void *) arg, &tochdr, sizeof (tochdr));
+
+ return stat;
+ }
+
+ case CDROMREADTOCENTRY: {
+ int stat;
+ struct cdrom_tocentry tocentry;
+ struct atapi_toc_entry *toce;
+
+ stat = verify_area (VERIFY_WRITE, (void *) arg,
+ sizeof (tocentry));
+ if (stat) return stat;
+
+ memcpy_fromfs (&tocentry, (void *) arg, sizeof (tocentry));
+
+ stat = cdrom_get_toc_entry (drive, tocentry.cdte_track, &toce,
+ NULL);
+ if (stat) return stat;
+
+ tocentry.cdte_ctrl = toce->control;
+ tocentry.cdte_adr = toce->adr;
+
+ if (tocentry.cdte_format == CDROM_MSF) {
+ /* convert to 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;
+
+ memcpy_tofs ((void *) arg, &tocentry, sizeof (tocentry));
+
+ return stat;
+ }
+
+ case CDROMSUBCHNL: {
+ struct atapi_cdrom_subchnl scbuf;
+ int stat;
+ struct cdrom_subchnl subchnl;
+
+ stat = verify_area (VERIFY_WRITE, (void *) arg,
+ sizeof (subchnl));
+ if (stat) return stat;
+
+ memcpy_fromfs (&subchnl, (void *) arg, sizeof (subchnl));
+
+ stat = cdrom_read_subchannel (drive, 1, /* current position */
+ (char *)&scbuf, sizeof (scbuf),
+ NULL);
+ if (stat) return stat;
+
+#if ! STANDARD_ATAPI
+ if (CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd) {
+ msf_from_bcd (&scbuf.acdsc_absaddr.msf);
+ msf_from_bcd (&scbuf.acdsc_reladdr.msf);
+ }
+ if (CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd)
+ scbuf.acdsc_trk = bcd2bin (scbuf.acdsc_trk);
+#endif /* not STANDARD_ATAPI */
+
+ if (subchnl.cdsc_format == CDROM_MSF) {
+ subchnl.cdsc_absaddr.msf.minute =
+ scbuf.acdsc_absaddr.msf.minute;
+ subchnl.cdsc_absaddr.msf.second =
+ scbuf.acdsc_absaddr.msf.second;
+ subchnl.cdsc_absaddr.msf.frame =
+ scbuf.acdsc_absaddr.msf.frame;
+
+ subchnl.cdsc_reladdr.msf.minute =
+ scbuf.acdsc_reladdr.msf.minute;
+ subchnl.cdsc_reladdr.msf.second =
+ scbuf.acdsc_reladdr.msf.second;
+ subchnl.cdsc_reladdr.msf.frame =
+ scbuf.acdsc_reladdr.msf.frame;
+ } else {
+ subchnl.cdsc_absaddr.lba =
+ msf_to_lba (scbuf.acdsc_absaddr.msf.minute,
+ scbuf.acdsc_absaddr.msf.second,
+ scbuf.acdsc_absaddr.msf.frame);
+ subchnl.cdsc_reladdr.lba =
+ msf_to_lba (scbuf.acdsc_reladdr.msf.minute,
+ scbuf.acdsc_reladdr.msf.second,
+ scbuf.acdsc_reladdr.msf.frame);
+ }
+
+ subchnl.cdsc_audiostatus = scbuf.acdsc_audiostatus;
+ subchnl.cdsc_ctrl = scbuf.acdsc_ctrl;
+ subchnl.cdsc_trk = scbuf.acdsc_trk;
+ subchnl.cdsc_ind = scbuf.acdsc_ind;
+
+ memcpy_tofs ((void *) arg, &subchnl, sizeof (subchnl));
+
+ return stat;
+ }
+
+ case CDROMVOLCTRL: {
+ struct cdrom_volctrl volctrl;
+ char buffer[24], mask[24];
+ int stat;
+
+ stat = verify_area (VERIFY_READ, (void *) arg,
+ sizeof (volctrl));
+ if (stat) return stat;
+ memcpy_fromfs (&volctrl, (void *) arg, sizeof (volctrl));
+
+ stat = cdrom_mode_sense (drive, 0x0e, 0, buffer,
+ sizeof (buffer), NULL);
+ if (stat) return stat;
+ stat = cdrom_mode_sense (drive, 0x0e, 1, mask,
+ sizeof (buffer), NULL);
+ if (stat) return stat;
+
+ buffer[1] = buffer[2] = 0;
+
+ buffer[17] = volctrl.channel0 & mask[17];
+ buffer[19] = volctrl.channel1 & mask[19];
+ buffer[21] = volctrl.channel2 & mask[21];
+ buffer[23] = volctrl.channel3 & mask[23];
+
+ return cdrom_mode_select (drive, 0x0e, buffer,
+ sizeof (buffer), NULL);
+ }
+
+ case CDROMVOLREAD: {
+ struct cdrom_volctrl volctrl;
+ char buffer[24];
+ int stat;
+
+ stat = verify_area (VERIFY_WRITE, (void *) arg,
+ sizeof (volctrl));
+ if (stat) return stat;
+
+ stat = cdrom_mode_sense (drive, 0x0e, 0, buffer,
+ sizeof (buffer), NULL);
+ if (stat) return stat;
+
+ volctrl.channel0 = buffer[17];
+ volctrl.channel1 = buffer[19];
+ volctrl.channel2 = buffer[21];
+ volctrl.channel3 = buffer[23];
+
+ memcpy_tofs ((void *) arg, &volctrl, sizeof (volctrl));
+
+ return 0;
+ }
+
+ case CDROMMULTISESSION: {
+ struct cdrom_multisession ms_info;
+ struct atapi_toc *toc;
+ int stat;
+
+ stat = verify_area (VERIFY_WRITE, (void *)arg,
+ sizeof (ms_info));
+ if (stat) return stat;
+
+ memcpy_fromfs (&ms_info, (void *)arg, sizeof (ms_info));
+
+ /* Make sure the TOC information is valid. */
+ stat = cdrom_read_toc (drive, NULL);
+ if (stat) return stat;
+
+ toc = drive->cdrom_info.toc;
+
+ if (ms_info.addr_format == CDROM_MSF)
+ lba_to_msf (toc->last_session_lba,
+ &ms_info.addr.msf.minute,
+ &ms_info.addr.msf.second,
+ &ms_info.addr.msf.frame);
+ else if (ms_info.addr_format == CDROM_LBA)
+ ms_info.addr.lba = toc->last_session_lba;
+ else
+ return -EINVAL;
+
+ ms_info.xa_flag = toc->xa_flag;
+
+ memcpy_tofs ((void *)arg, &ms_info, sizeof (ms_info));
+
+ return 0;
+ }
+
+ /* Read 2352 byte blocks from audio tracks. */
+ case CDROMREADAUDIO: {
+ int stat, lba;
+ struct atapi_toc *toc;
+ struct cdrom_read_audio ra;
+ char *buf;
+
+ /* Make sure the TOC is up to date. */
+ stat = cdrom_read_toc (drive, NULL);
+ if (stat) return stat;
+
+ toc = drive->cdrom_info.toc;
+
+ stat = verify_area (VERIFY_READ, (char *)arg, sizeof (ra));
+ if (stat) return stat;
+
+ memcpy_fromfs (&ra, (void *)arg, sizeof (ra));
+
+ if (ra.nframes < 0 || ra.nframes > toc->capacity)
+ return -EINVAL;
+ else if (ra.nframes == 0)
+ return 0;
+
+ stat = verify_area (VERIFY_WRITE, (char *)ra.buf,
+ ra.nframes * CD_FRAMESIZE_RAW);
+ if (stat) return stat;
+
+ if (ra.addr_format == CDROM_MSF)
+ lba = msf_to_lba (ra.addr.msf.minute,
+ ra.addr.msf.second,
+ ra.addr.msf.frame);
+ else if (ra.addr_format == CDROM_LBA)
+ lba = ra.addr.lba;
+ else
+ return -EINVAL;
+
+ if (lba < 0 || lba >= toc->capacity)
+ return -EINVAL;
+
+ buf = (char *) kmalloc (CDROM_NBLOCKS_BUFFER*CD_FRAMESIZE_RAW,
+ GFP_KERNEL);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ while (ra.nframes > 0) {
+ int this_nblocks = ra.nframes;
+ if (this_nblocks > CDROM_NBLOCKS_BUFFER)
+ this_nblocks = CDROM_NBLOCKS_BUFFER;
+ stat = cdrom_read_block
+ (drive, 1, lba, this_nblocks,
+ buf, this_nblocks * CD_FRAMESIZE_RAW, NULL);
+ if (stat) break;
+
+ memcpy_tofs (ra.buf, buf,
+ this_nblocks * CD_FRAMESIZE_RAW);
+ ra.buf += this_nblocks * CD_FRAMESIZE_RAW;
+ ra.nframes -= this_nblocks;
+ lba += this_nblocks;
+ }
+
+ kfree (buf);
+ return stat;
+ }
+ case CDROMREADRAW:
+ case CDROMREADMODE1:
+ case CDROMREADMODE2: {
+ struct cdrom_msf msf;
+ int blocksize, format, stat, lba;
+ char *buf;
+
+ if (cmd == CDROMREADMODE1) {
+ blocksize = CD_FRAMESIZE;
+ format = 2;
+ } else if (cmd == CDROMREADMODE2) {
+ blocksize = CD_FRAMESIZE_RAW0;
+ format = 3;
+ } else {
+ blocksize = CD_FRAMESIZE_RAW;
+ format = 0;
+ }
+
+ stat = verify_area (VERIFY_WRITE, (char *)arg, blocksize);
+ if (stat) return stat;
+
+ memcpy_fromfs (&msf, (void *)arg, sizeof (msf));
+
+ lba = msf_to_lba (msf.cdmsf_min0,
+ msf.cdmsf_sec0,
+ msf.cdmsf_frame0);
+
+ /* DON'T make sure the TOC is up to date. */
+ /* stat = cdrom_read_toc (drive, NULL);
+ if (stat) return stat;
+
+ toc = drive->cdrom_info.toc;
+
+ if (lba < 0 || lba >= toc->capacity)
+ return -EINVAL; */
+
+ buf = (char *) kmalloc (CD_FRAMESIZE_RAW, GFP_KERNEL);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ stat = cdrom_read_block (drive, format, lba, 1, buf, blocksize,
+ NULL);
+ if (stat == 0)
+ memcpy_tofs ((char *)arg, buf, blocksize);
+
+ kfree (buf);
+ return stat;
+ }
+
+ case CDROM_GET_UPC: {
+ int stat;
+ char mcnbuf[24];
+ struct cdrom_mcn mcn;
+
+ stat = verify_area (VERIFY_WRITE, (void *) arg,
+ sizeof (mcn));
+ if (stat) return stat;
+
+ stat = cdrom_read_subchannel (drive, 2, /* get MCN */
+ mcnbuf, sizeof (mcnbuf),
+ NULL);
+ if (stat) return stat;
+
+ memcpy (mcn.medium_catalog_number, mcnbuf+9,
+ sizeof (mcn.medium_catalog_number)-1);
+ mcn.medium_catalog_number[sizeof (mcn.medium_catalog_number)-1]
+ = '\0';
+
+ memcpy_tofs ((void *) arg, &mcn, sizeof (mcn));
+
+ return stat;
+ }
+
+ case CDROMLOADFROMSLOT:
+ printk ("%s: Use CDROM_SELECT_DISC "
+ " instead of CDROMLOADFROMSLOT.\n", drive->name);
+ /* Fall through. */
+
+ case CDROM_SELECT_DISC: {
+ struct atapi_request_sense my_reqbuf;
+ int stat;
+
+ if (drive->usage > 1)
+ return -EBUSY;
+
+ (void) cdrom_load_unload (drive, -1, NULL);
+
+ cdrom_saw_media_change (drive);
+ if (arg == -1) {
+ (void) cdrom_lockdoor (drive, 0, NULL);
+ return 0;
+ }
+ (void) cdrom_load_unload (drive, (int)arg, NULL);
+
+ stat = cdrom_check_status (drive, &my_reqbuf);
+ if (stat && my_reqbuf.sense_key == NOT_READY) {
+ return -ENOENT;
+ }
+
+ /* And try to read the TOC information now. */
+ return cdrom_read_toc (drive, &my_reqbuf);
+ }
+
+#if 0 /* Doesn't work reliably yet. */
+ case CDROMRESET: {
+ struct request req;
+ ide_init_drive_cmd (&req);
+ req.cmd = RESET_DRIVE_COMMAND;
+ return ide_do_drive_cmd (drive, &req, ide_wait);
+ }
+#endif
+
+
+#ifdef TEST
+ case 0x1234: {
+ int stat;
+ struct packet_command pc;
+ int len, lena;
+
+ memset (&pc, 0, sizeof (pc));
+
+ stat = verify_area (VERIFY_READ, (void *) arg, sizeof (pc.c));
+ if (stat) return stat;
+ memcpy_fromfs (&pc.c, (void *) arg, sizeof (pc.c));
+ arg += sizeof (pc.c);
+
+ stat = verify_area (VERIFY_READ, (void *) arg, sizeof (len));
+ if (stat) return stat;
+ memcpy_fromfs (&len, (void *) arg , sizeof (len));
+ arg += sizeof (len);
+
+ if (len > 0) {
+ stat = verify_area (VERIFY_WRITE, (void *) arg, len);
+ if (stat) return stat;
+ }
+
+ lena = len;
+ if (lena < 0) lena = 0;
+
+ {
+ char buf[lena];
+ if (len > 0) {
+ pc.buflen = len;
+ pc.buffer = buf;
+ }
+
+ stat = cdrom_queue_packet_command (drive, &pc);
+
+ if (len > 0)
+ memcpy_tofs ((void *)arg, buf, len);
+ }
+
+ return stat;
+ }
+#endif
+
+ default:
+ return -EPERM;
+ }
+
+}
+
+
+
+/****************************************************************************
+ * Other driver requests (open, close, check media change).
+ */
+
+int ide_cdrom_check_media_change (ide_drive_t *drive)
+{
+ int retval;
+
+ (void) cdrom_check_status (drive, NULL);
+
+ retval = CDROM_STATE_FLAGS (drive)->media_changed;
+ CDROM_STATE_FLAGS (drive)->media_changed = 0;
+
+ return retval;
+}
+
+
+int ide_cdrom_open (struct inode *ip, struct file *fp, ide_drive_t *drive)
+{
+ /* no write access */
+ if (fp->f_mode & 2) {
+ --drive->usage;
+ return -EROFS;
+ }
+
+ /* If this is the first open, check the drive status. */
+ if (drive->usage == 1) {
+ int stat;
+ struct atapi_request_sense my_reqbuf;
+ my_reqbuf.sense_key = 0;
+
+ /* Get the drive status. */
+ stat = cdrom_check_status (drive, &my_reqbuf);
+
+ /* If the tray is open, try to close it. */
+ if (stat && my_reqbuf.sense_key == NOT_READY) {
+ cdrom_eject (drive, 1, &my_reqbuf);
+ stat = cdrom_check_status (drive, &my_reqbuf);
+ }
+
+ /* If things worked ok, lock the door and read the
+ TOC information. */
+ if (stat == 0 || my_reqbuf.sense_key == UNIT_ATTENTION) {
+ (void) cdrom_lockdoor (drive, 1, &my_reqbuf);
+ (void) cdrom_read_toc (drive, &my_reqbuf);
+ }
+ }
+
+ return 0;
+}
+
+
+/*
+ * Close down the device. Invalidate all cached blocks.
+ */
+
+void ide_cdrom_release (struct inode *inode, struct file *file,
+ ide_drive_t *drive)
+{
+ if (drive->usage == 0) {
+ invalidate_buffers (inode->i_rdev);
+
+ /* Unlock the door. */
+ (void) cdrom_lockdoor (drive, 0, NULL);
+
+ /* Do an eject if we were requested to do so. */
+ if (CDROM_STATE_FLAGS (drive)->eject_on_close)
+ (void) cdrom_eject (drive, 0, NULL);
+ }
+}
+
+
+
+/****************************************************************************
+ * Device initialization.
+ */
+
+void ide_cdrom_setup (ide_drive_t *drive)
+{
+ blksize_size[HWIF(drive)->major][drive->select.b.unit << PARTN_BITS] =
+ CD_FRAMESIZE;
+
+ drive->special.all = 0;
+ drive->ready_stat = 0;
+
+ CDROM_STATE_FLAGS (drive)->media_changed = 0;
+ CDROM_STATE_FLAGS (drive)->toc_valid = 0;
+ CDROM_STATE_FLAGS (drive)->door_locked = 0;
+
+ /* Turn this off by default, since many people don't like it. */
+ CDROM_STATE_FLAGS (drive)->eject_on_close= 0;
+
+#if NO_DOOR_LOCKING
+ CDROM_CONFIG_FLAGS (drive)->no_doorlock = 1;
+#else
+ CDROM_CONFIG_FLAGS (drive)->no_doorlock = 0;
+#endif
+
+ /* by default Sanyo 3 CD changer support is turned off and
+ ATAPI Rev 2.2+ standard support for CD changers is used */
+ CDROM_STATE_FLAGS (drive)->sanyo_slot = 0;
+
+ if (drive->id != NULL)
+ CDROM_CONFIG_FLAGS (drive)->drq_interrupt =
+ ((drive->id->config & 0x0060) == 0x20);
+ else
+ CDROM_CONFIG_FLAGS (drive)->drq_interrupt = 0;
+
+#if ! STANDARD_ATAPI
+ drive->cdrom_info.max_sectors = 252;
+
+ CDROM_CONFIG_FLAGS (drive)->old_readcd = 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, "GCD-R580B") == 0)
+ drive->cdrom_info.max_sectors = 124;
+
+ else if (strcmp (drive->id->model,
+ "NEC CD-ROM DRIVE:260") == 0 &&
+ strcmp (drive->id->fw_rev, "1.01") == 0) {
+ /* Old NEC260 (not R). */
+ 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, "WEARNES CDD-120") == 0 &&
+ strcmp (drive->id->fw_rev, "A1.1") == 0) {
+ /* 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 */
+ CDROM_STATE_FLAGS (drive)->sanyo_slot = 3;
+ }
+
+ }
+#endif /* not STANDARD_ATAPI */
+
+ drive->cdrom_info.toc = NULL;
+ drive->cdrom_info.sector_buffer = NULL;
+ drive->cdrom_info.sector_buffered = 0;
+ drive->cdrom_info.nsectors_buffered = 0;
+}
+
+
+
+/*
+ * TODO (for 2.1?):
+ * Avoid printing error messages for expected errors from the drive.
+ * Integrate with generic cdrom driver.
+ * Query the drive to find what features are available
+ * before trying to use them.
+ * Integrate spindown time adjustment patch.
+ * Modularize.
+ * CDROMRESET ioctl.
+ * Better support for changers.
+ */
+
+
+
+/*==========================================================================*/
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */