mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-15 00:34:10 +08:00
6da2ec5605
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This patch replaces cases of: kmalloc(a * b, gfp) with: kmalloc_array(a * b, gfp) as well as handling cases of: kmalloc(a * b * c, gfp) with: kmalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kmalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kmalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The tools/ directory was manually excluded, since it has its own implementation of kmalloc(). The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(char) * COUNT + COUNT , ...) | kmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kmalloc + kmalloc_array ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kmalloc(C1 * C2 * C3, ...) | kmalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kmalloc(sizeof(THING) * C2, ...) | kmalloc(sizeof(TYPE) * C2, ...) | kmalloc(C1 * C2 * C3, ...) | kmalloc(C1 * C2, ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - (E1) * E2 + E1, E2 , ...) | - kmalloc + kmalloc_array ( - (E1) * (E2) + E1, E2 , ...) | - kmalloc + kmalloc_array ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
3743 lines
98 KiB
C
3743 lines
98 KiB
C
/* linux/drivers/cdrom/cdrom.c
|
|
Copyright (c) 1996, 1997 David A. van Leeuwen.
|
|
Copyright (c) 1997, 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.
|
|
|
|
Uniform CD-ROM driver for Linux.
|
|
See Documentation/cdrom/cdrom-standard.tex for usage information.
|
|
|
|
The routines in the file provide a uniform interface between the
|
|
software that uses CD-ROMs and the various low-level drivers that
|
|
actually talk to the hardware. Suggestions are welcome.
|
|
Patches that work are more welcome though. ;-)
|
|
|
|
To Do List:
|
|
----------------------------------
|
|
|
|
-- Modify sysctl/proc interface. I plan on having one directory per
|
|
drive, with entries for outputing general drive information, and sysctl
|
|
based tunable parameters such as whether the tray should auto-close for
|
|
that drive. Suggestions (or patches) for this welcome!
|
|
|
|
|
|
Revision History
|
|
----------------------------------
|
|
1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl>
|
|
-- Initial version by David A. van Leeuwen. I don't have a detailed
|
|
changelog for the 1.x series, David?
|
|
|
|
2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org>
|
|
-- New maintainer! As David A. van Leeuwen has been too busy to actively
|
|
maintain and improve this driver, I am now carrying on the torch. If
|
|
you have a problem with this driver, please feel free to contact me.
|
|
|
|
-- Added (rudimentary) sysctl interface. I realize this is really weak
|
|
right now, and is _very_ badly implemented. It will be improved...
|
|
|
|
-- Modified CDROM_DISC_STATUS so that it is now incorporated into
|
|
the Uniform CD-ROM driver via the cdrom_count_tracks function.
|
|
The cdrom_count_tracks function helps resolve some of the false
|
|
assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check
|
|
for the correct media type when mounting or playing audio from a CD.
|
|
|
|
-- Remove the calls to verify_area and only use the copy_from_user and
|
|
copy_to_user stuff, since these calls now provide their own memory
|
|
checking with the 2.1.x kernels.
|
|
|
|
-- Major update to return codes so that errors from low-level drivers
|
|
are passed on through (thanks to Gerd Knorr for pointing out this
|
|
problem).
|
|
|
|
-- Made it so if a function isn't implemented in a low-level driver,
|
|
ENOSYS is now returned instead of EINVAL.
|
|
|
|
-- Simplified some complex logic so that the source code is easier to read.
|
|
|
|
-- Other stuff I probably forgot to mention (lots of changes).
|
|
|
|
2.01 to 2.11 Dec 1997-Jan 1998
|
|
-- TO-DO! Write changelogs for 2.01 to 2.12.
|
|
|
|
2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org>
|
|
-- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that
|
|
copy_*_user does not return EFAULT on error, but instead returns the number
|
|
of bytes not copied. I was returning whatever non-zero stuff came back from
|
|
the copy_*_user functions directly, which would result in strange errors.
|
|
|
|
2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org>
|
|
-- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed
|
|
of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing
|
|
this out and providing a simple fix.
|
|
-- Fixed the procfs-unload-module bug with the fill_inode procfs callback.
|
|
thanks to Andrea Arcangeli
|
|
-- Fixed it so that the /proc entry now also shows up when cdrom is
|
|
compiled into the kernel. Before it only worked when loaded as a module.
|
|
|
|
2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org>
|
|
-- Fixed a bug in cdrom_media_changed and handling of reporting that
|
|
the media had changed for devices that _don't_ implement media_changed.
|
|
Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug.
|
|
-- Made a few things more pedanticly correct.
|
|
|
|
2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk>
|
|
-- New maintainers! Erik was too busy to continue the work on the driver,
|
|
so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk>
|
|
will do their best to follow in his footsteps
|
|
|
|
2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk>
|
|
-- Check if drive is capable of doing what we ask before blindly changing
|
|
cdi->options in various ioctl.
|
|
-- Added version to proc entry.
|
|
|
|
2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Fixed an error in open_for_data where we would sometimes not return
|
|
the correct error value. Thanks Huba Gaspar <huba@softcell.hu>.
|
|
-- Fixed module usage count - usage was based on /proc/sys/dev
|
|
instead of /proc/sys/dev/cdrom. This could lead to an oops when other
|
|
modules had entries in dev. Feb 02 - real bug was in sysctl.c where
|
|
dev would be removed even though it was used. cdrom.c just illuminated
|
|
that bug.
|
|
|
|
2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has
|
|
been "rewritten" because capabilities and options aren't in sync. They
|
|
should be...
|
|
-- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way.
|
|
-- Added CDROM_RESET ioctl.
|
|
-- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly.
|
|
-- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs
|
|
from parsing /proc/sys/dev/cdrom/info.
|
|
|
|
2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Check capability mask from low level driver when counting tracks as
|
|
per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>.
|
|
|
|
2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of
|
|
CDC_CLOSE_TRAY.
|
|
-- proc info didn't mask against capabilities mask.
|
|
|
|
3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Unified audio ioctl handling across CD-ROM drivers. A lot of the
|
|
code was duplicated before. Drives that support the generic packet
|
|
interface are now being fed packets from here instead.
|
|
-- First attempt at adding support for MMC2 commands - for DVD and
|
|
CD-R(W) drives. Only the DVD parts are in now - the interface used is
|
|
the same as for the audio ioctls.
|
|
-- ioctl cleanups. if a drive couldn't play audio, it didn't get
|
|
a change to perform device specific ioctls as well.
|
|
-- Defined CDROM_CAN(CDC_XXX) for checking the capabilities.
|
|
-- Put in sysctl files for autoclose, autoeject, check_media, debug,
|
|
and lock.
|
|
-- /proc/sys/dev/cdrom/info has been updated to also contain info about
|
|
CD-Rx and DVD capabilities.
|
|
-- Now default to checking media type.
|
|
-- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for
|
|
doing this anyway, with the generic_packet addition.
|
|
|
|
3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Fix up the sysctl handling so that the option flags get set
|
|
correctly.
|
|
-- Fix up ioctl handling so the device specific ones actually get
|
|
called :).
|
|
|
|
3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Fixed volume control on SCSI drives (or others with longer audio
|
|
page).
|
|
-- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath
|
|
<andrewtv@usa.net> for telling me and for having defined the various
|
|
DVD structures and ioctls in the first place! He designed the original
|
|
DVD patches for ide-cd and while I rearranged and unified them, the
|
|
interface is still the same.
|
|
|
|
3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only
|
|
CDROMREADTOCENTRY and CDROMREADTOCHDR are left.
|
|
-- Moved the CDROMREADxxx ioctls in here.
|
|
-- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls
|
|
and exported functions.
|
|
-- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands
|
|
to now read GPCMD_ for the new generic packet interface. All low level
|
|
drivers are updated as well.
|
|
-- Various other cleanups.
|
|
|
|
3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Fixed a couple of possible memory leaks (if an operation failed and
|
|
we didn't free the buffer before returning the error).
|
|
-- Integrated Uniform CD Changer handling from Richard Sharman
|
|
<rsharman@pobox.com>.
|
|
-- Defined CD_DVD and CD_CHANGER log levels.
|
|
-- Fixed the CDROMREADxxx ioctls.
|
|
-- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few
|
|
drives supported it. We lose the index part, however.
|
|
-- Small modifications to accommodate opens of /dev/hdc1, required
|
|
for ide-cd to handle multisession discs.
|
|
-- Export cdrom_mode_sense and cdrom_mode_select.
|
|
-- init_cdrom_command() for setting up a cgc command.
|
|
|
|
3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Changed the interface for CDROM_SEND_PACKET. Before it was virtually
|
|
impossible to send the drive data in a sensible way.
|
|
-- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and
|
|
dvd_read_manufact.
|
|
-- Added setup of write mode for packet writing.
|
|
-- Fixed CDDA ripping with cdda2wav - accept much larger requests of
|
|
number of frames and split the reads in blocks of 8.
|
|
|
|
3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk>
|
|
-- Added support for changing the region of DVD drives.
|
|
-- Added sense data to generic command.
|
|
|
|
3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de>
|
|
-- Do same "read header length" trick in cdrom_get_disc_info() as
|
|
we do in cdrom_get_track_info() -- some drive don't obey specs and
|
|
fail if they can't supply the full Mt Fuji size table.
|
|
-- Deleted stuff related to setting up write modes. It has a different
|
|
home now.
|
|
-- Clear header length in mode_select unconditionally.
|
|
-- Removed the register_disk() that was added, not needed here.
|
|
|
|
3.08 May 1, 2000 - Jens Axboe <axboe@suse.de>
|
|
-- Fix direction flag in setup_send_key and setup_report_key. This
|
|
gave some SCSI adapters problems.
|
|
-- Always return -EROFS for write opens
|
|
-- Convert to module_init/module_exit style init and remove some
|
|
of the #ifdef MODULE stuff
|
|
-- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid,
|
|
DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and
|
|
dvd_do_auth passed uninitialized data to drive because init_cdrom_command
|
|
did not clear a 0 sized buffer.
|
|
|
|
3.09 May 12, 2000 - Jens Axboe <axboe@suse.de>
|
|
-- Fix Video-CD on SCSI drives that don't support READ_CD command. In
|
|
that case switch block size and issue plain READ_10 again, then switch
|
|
back.
|
|
|
|
3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de>
|
|
-- Fix volume control on CD's - old SCSI-II drives now use their own
|
|
code, as doing MODE6 stuff in here is really not my intention.
|
|
-- Use READ_DISC_INFO for more reliable end-of-disc.
|
|
|
|
3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de>
|
|
-- Fix bug in getting rpc phase 2 region info.
|
|
-- Reinstate "correct" CDROMPLAYTRKIND
|
|
|
|
3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de>
|
|
-- Use quiet bit on packet commands not known to work
|
|
|
|
3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de>
|
|
-- Various fixes and lots of cleanups not listed :-)
|
|
-- Locking fixes
|
|
-- Mt Rainier support
|
|
-- DVD-RAM write open fixes
|
|
|
|
Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov
|
|
<appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units.
|
|
|
|
Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW
|
|
2.4.x patch by Andy Polyakov <appro@fy.chalmers.se>
|
|
|
|
-------------------------------------------------------------------------*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#define REVISION "Revision: 3.20"
|
|
#define VERSION "Id: cdrom.c 3.20 2003/12/17"
|
|
|
|
/* I use an error-log mask to give fine grain control over the type of
|
|
messages dumped to the system logs. The available masks include: */
|
|
#define CD_NOTHING 0x0
|
|
#define CD_WARNING 0x1
|
|
#define CD_REG_UNREG 0x2
|
|
#define CD_DO_IOCTL 0x4
|
|
#define CD_OPEN 0x8
|
|
#define CD_CLOSE 0x10
|
|
#define CD_COUNT_TRACKS 0x20
|
|
#define CD_CHANGER 0x40
|
|
#define CD_DVD 0x80
|
|
|
|
/* Define this to remove _all_ the debugging messages */
|
|
/* #define ERRLOGMASK CD_NOTHING */
|
|
#define ERRLOGMASK CD_WARNING
|
|
/* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
|
|
/* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/major.h>
|
|
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/cdrom.h>
|
|
#include <linux/sysctl.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/blkpg.h>
|
|
#include <linux/init.h>
|
|
#include <linux/fcntl.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/times.h>
|
|
#include <linux/uaccess.h>
|
|
#include <scsi/scsi_request.h>
|
|
|
|
/* used to tell the module to turn on full debugging messages */
|
|
static bool debug;
|
|
/* default compatibility mode */
|
|
static bool autoclose=1;
|
|
static bool autoeject;
|
|
static bool lockdoor = 1;
|
|
/* will we ever get to use this... sigh. */
|
|
static bool check_media_type;
|
|
/* automatically restart mrw format */
|
|
static bool mrw_format_restart = 1;
|
|
module_param(debug, bool, 0);
|
|
module_param(autoclose, bool, 0);
|
|
module_param(autoeject, bool, 0);
|
|
module_param(lockdoor, bool, 0);
|
|
module_param(check_media_type, bool, 0);
|
|
module_param(mrw_format_restart, bool, 0);
|
|
|
|
static DEFINE_MUTEX(cdrom_mutex);
|
|
|
|
static const char *mrw_format_status[] = {
|
|
"not mrw",
|
|
"bgformat inactive",
|
|
"bgformat active",
|
|
"mrw complete",
|
|
};
|
|
|
|
static const char *mrw_address_space[] = { "DMA", "GAA" };
|
|
|
|
#if (ERRLOGMASK != CD_NOTHING)
|
|
#define cd_dbg(type, fmt, ...) \
|
|
do { \
|
|
if ((ERRLOGMASK & type) || debug == 1) \
|
|
pr_debug(fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
#else
|
|
#define cd_dbg(type, fmt, ...) \
|
|
do { \
|
|
if (0 && (ERRLOGMASK & type) || debug == 1) \
|
|
pr_debug(fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
#endif
|
|
|
|
/* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
|
|
a lot of places. This macro makes the code more clear. */
|
|
#define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
|
|
|
|
/*
|
|
* Another popular OS uses 7 seconds as the hard timeout for default
|
|
* commands, so it is a good choice for us as well.
|
|
*/
|
|
#define CDROM_DEF_TIMEOUT (7 * HZ)
|
|
|
|
/* Not-exported routines. */
|
|
|
|
static void cdrom_sysctl_register(void);
|
|
|
|
static LIST_HEAD(cdrom_list);
|
|
|
|
int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
|
|
struct packet_command *cgc)
|
|
{
|
|
if (cgc->sense) {
|
|
cgc->sense->sense_key = 0x05;
|
|
cgc->sense->asc = 0x20;
|
|
cgc->sense->ascq = 0x00;
|
|
}
|
|
|
|
cgc->stat = -EIO;
|
|
return -EIO;
|
|
}
|
|
EXPORT_SYMBOL(cdrom_dummy_generic_packet);
|
|
|
|
static int cdrom_flush_cache(struct cdrom_device_info *cdi)
|
|
{
|
|
struct packet_command cgc;
|
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
|
|
cgc.cmd[0] = GPCMD_FLUSH_CACHE;
|
|
|
|
cgc.timeout = 5 * 60 * HZ;
|
|
|
|
return cdi->ops->generic_packet(cdi, &cgc);
|
|
}
|
|
|
|
/* requires CD R/RW */
|
|
static int cdrom_get_disc_info(struct cdrom_device_info *cdi,
|
|
disc_information *di)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
struct packet_command cgc;
|
|
int ret, buflen;
|
|
|
|
/* set up command and get the disc info */
|
|
init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
|
|
cgc.cmd[0] = GPCMD_READ_DISC_INFO;
|
|
cgc.cmd[8] = cgc.buflen = 2;
|
|
cgc.quiet = 1;
|
|
|
|
ret = cdo->generic_packet(cdi, &cgc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* not all drives have the same disc_info length, so requeue
|
|
* packet with the length the drive tells us it can supply
|
|
*/
|
|
buflen = be16_to_cpu(di->disc_information_length) +
|
|
sizeof(di->disc_information_length);
|
|
|
|
if (buflen > sizeof(disc_information))
|
|
buflen = sizeof(disc_information);
|
|
|
|
cgc.cmd[8] = cgc.buflen = buflen;
|
|
ret = cdo->generic_packet(cdi, &cgc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* return actual fill size */
|
|
return buflen;
|
|
}
|
|
|
|
/* This macro makes sure we don't have to check on cdrom_device_ops
|
|
* existence in the run-time routines below. Change_capability is a
|
|
* hack to have the capability flags defined const, while we can still
|
|
* change it here without gcc complaining at every line.
|
|
*/
|
|
#define ENSURE(call, bits) \
|
|
do { \
|
|
if (cdo->call == NULL) \
|
|
*change_capability &= ~(bits); \
|
|
} while (0)
|
|
|
|
/*
|
|
* the first prototypes used 0x2c as the page code for the mrw mode page,
|
|
* subsequently this was changed to 0x03. probe the one used by this drive
|
|
*/
|
|
static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
|
|
{
|
|
struct packet_command cgc;
|
|
char buffer[16];
|
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
|
|
|
|
cgc.timeout = HZ;
|
|
cgc.quiet = 1;
|
|
|
|
if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
|
|
cdi->mrw_mode_page = MRW_MODE_PC;
|
|
return 0;
|
|
} else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
|
|
cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
|
|
{
|
|
struct packet_command cgc;
|
|
struct mrw_feature_desc *mfd;
|
|
unsigned char buffer[16];
|
|
int ret;
|
|
|
|
*write = 0;
|
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
|
|
|
|
cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
|
|
cgc.cmd[3] = CDF_MRW;
|
|
cgc.cmd[8] = sizeof(buffer);
|
|
cgc.quiet = 1;
|
|
|
|
if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
|
|
if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
|
|
return 1;
|
|
*write = mfd->write;
|
|
|
|
if ((ret = cdrom_mrw_probe_pc(cdi))) {
|
|
*write = 0;
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
|
|
{
|
|
struct packet_command cgc;
|
|
unsigned char buffer[12];
|
|
int ret;
|
|
|
|
pr_info("%sstarting format\n", cont ? "Re" : "");
|
|
|
|
/*
|
|
* FmtData bit set (bit 4), format type is 1
|
|
*/
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
|
|
cgc.cmd[0] = GPCMD_FORMAT_UNIT;
|
|
cgc.cmd[1] = (1 << 4) | 1;
|
|
|
|
cgc.timeout = 5 * 60 * HZ;
|
|
|
|
/*
|
|
* 4 byte format list header, 8 byte format list descriptor
|
|
*/
|
|
buffer[1] = 1 << 1;
|
|
buffer[3] = 8;
|
|
|
|
/*
|
|
* nr_blocks field
|
|
*/
|
|
buffer[4] = 0xff;
|
|
buffer[5] = 0xff;
|
|
buffer[6] = 0xff;
|
|
buffer[7] = 0xff;
|
|
|
|
buffer[8] = 0x24 << 2;
|
|
buffer[11] = cont;
|
|
|
|
ret = cdi->ops->generic_packet(cdi, &cgc);
|
|
if (ret)
|
|
pr_info("bgformat failed\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
|
|
{
|
|
struct packet_command cgc;
|
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
|
|
cgc.cmd[0] = GPCMD_CLOSE_TRACK;
|
|
|
|
/*
|
|
* Session = 1, Track = 0
|
|
*/
|
|
cgc.cmd[1] = !!immed;
|
|
cgc.cmd[2] = 1 << 1;
|
|
|
|
cgc.timeout = 5 * 60 * HZ;
|
|
|
|
return cdi->ops->generic_packet(cdi, &cgc);
|
|
}
|
|
|
|
static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
|
|
{
|
|
disc_information di;
|
|
int ret;
|
|
|
|
ret = cdrom_get_disc_info(cdi, &di);
|
|
if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
|
|
return 1;
|
|
|
|
ret = 0;
|
|
if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
|
|
pr_info("issuing MRW background format suspend\n");
|
|
ret = cdrom_mrw_bgformat_susp(cdi, 0);
|
|
}
|
|
|
|
if (!ret && cdi->media_written)
|
|
ret = cdrom_flush_cache(cdi);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
|
|
{
|
|
struct packet_command cgc;
|
|
struct mode_page_header *mph;
|
|
char buffer[16];
|
|
int ret, offset, size;
|
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
|
|
|
|
cgc.buffer = buffer;
|
|
cgc.buflen = sizeof(buffer);
|
|
|
|
ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
mph = (struct mode_page_header *)buffer;
|
|
offset = be16_to_cpu(mph->desc_length);
|
|
size = be16_to_cpu(mph->mode_data_length) + 2;
|
|
|
|
buffer[offset + 3] = space;
|
|
cgc.buflen = size;
|
|
|
|
ret = cdrom_mode_select(cdi, &cgc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pr_info("%s: mrw address space %s selected\n",
|
|
cdi->name, mrw_address_space[space]);
|
|
return 0;
|
|
}
|
|
|
|
int register_cdrom(struct cdrom_device_info *cdi)
|
|
{
|
|
static char banner_printed;
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
int *change_capability = (int *)&cdo->capability; /* hack */
|
|
|
|
cd_dbg(CD_OPEN, "entering register_cdrom\n");
|
|
|
|
if (cdo->open == NULL || cdo->release == NULL)
|
|
return -EINVAL;
|
|
if (!banner_printed) {
|
|
pr_info("Uniform CD-ROM driver " REVISION "\n");
|
|
banner_printed = 1;
|
|
cdrom_sysctl_register();
|
|
}
|
|
|
|
ENSURE(drive_status, CDC_DRIVE_STATUS);
|
|
if (cdo->check_events == NULL && cdo->media_changed == NULL)
|
|
*change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC);
|
|
ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
|
|
ENSURE(lock_door, CDC_LOCK);
|
|
ENSURE(select_speed, CDC_SELECT_SPEED);
|
|
ENSURE(get_last_session, CDC_MULTI_SESSION);
|
|
ENSURE(get_mcn, CDC_MCN);
|
|
ENSURE(reset, CDC_RESET);
|
|
ENSURE(generic_packet, CDC_GENERIC_PACKET);
|
|
cdi->mc_flags = 0;
|
|
cdi->options = CDO_USE_FFLAGS;
|
|
|
|
if (autoclose == 1 && CDROM_CAN(CDC_CLOSE_TRAY))
|
|
cdi->options |= (int) CDO_AUTO_CLOSE;
|
|
if (autoeject == 1 && CDROM_CAN(CDC_OPEN_TRAY))
|
|
cdi->options |= (int) CDO_AUTO_EJECT;
|
|
if (lockdoor == 1)
|
|
cdi->options |= (int) CDO_LOCK;
|
|
if (check_media_type == 1)
|
|
cdi->options |= (int) CDO_CHECK_TYPE;
|
|
|
|
if (CDROM_CAN(CDC_MRW_W))
|
|
cdi->exit = cdrom_mrw_exit;
|
|
|
|
if (cdi->disk)
|
|
cdi->cdda_method = CDDA_BPC_FULL;
|
|
else
|
|
cdi->cdda_method = CDDA_OLD;
|
|
|
|
WARN_ON(!cdo->generic_packet);
|
|
|
|
cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
|
|
mutex_lock(&cdrom_mutex);
|
|
list_add(&cdi->list, &cdrom_list);
|
|
mutex_unlock(&cdrom_mutex);
|
|
return 0;
|
|
}
|
|
#undef ENSURE
|
|
|
|
void unregister_cdrom(struct cdrom_device_info *cdi)
|
|
{
|
|
cd_dbg(CD_OPEN, "entering unregister_cdrom\n");
|
|
|
|
mutex_lock(&cdrom_mutex);
|
|
list_del(&cdi->list);
|
|
mutex_unlock(&cdrom_mutex);
|
|
|
|
if (cdi->exit)
|
|
cdi->exit(cdi);
|
|
|
|
cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
|
|
}
|
|
|
|
int cdrom_get_media_event(struct cdrom_device_info *cdi,
|
|
struct media_event_desc *med)
|
|
{
|
|
struct packet_command cgc;
|
|
unsigned char buffer[8];
|
|
struct event_header *eh = (struct event_header *)buffer;
|
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
|
|
cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
|
|
cgc.cmd[1] = 1; /* IMMED */
|
|
cgc.cmd[4] = 1 << 4; /* media event */
|
|
cgc.cmd[8] = sizeof(buffer);
|
|
cgc.quiet = 1;
|
|
|
|
if (cdi->ops->generic_packet(cdi, &cgc))
|
|
return 1;
|
|
|
|
if (be16_to_cpu(eh->data_len) < sizeof(*med))
|
|
return 1;
|
|
|
|
if (eh->nea || eh->notification_class != 0x4)
|
|
return 1;
|
|
|
|
memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
|
|
struct rwrt_feature_desc *rfd)
|
|
{
|
|
struct packet_command cgc;
|
|
char buffer[24];
|
|
int ret;
|
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
|
|
|
|
cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */
|
|
cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */
|
|
cgc.cmd[8] = sizeof(buffer); /* often 0x18 */
|
|
cgc.quiet = 1;
|
|
|
|
if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
|
|
{
|
|
struct packet_command cgc;
|
|
char buffer[16];
|
|
__be16 *feature_code;
|
|
int ret;
|
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
|
|
|
|
cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
|
|
cgc.cmd[3] = CDF_HWDM;
|
|
cgc.cmd[8] = sizeof(buffer);
|
|
cgc.quiet = 1;
|
|
|
|
if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
|
|
if (be16_to_cpu(*feature_code) == CDF_HWDM)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
|
|
{
|
|
struct rwrt_feature_desc rfd;
|
|
int ret;
|
|
|
|
*write = 0;
|
|
|
|
if ((ret = cdrom_get_random_writable(cdi, &rfd)))
|
|
return ret;
|
|
|
|
if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
|
|
*write = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_media_erasable(struct cdrom_device_info *cdi)
|
|
{
|
|
disc_information di;
|
|
int ret;
|
|
|
|
ret = cdrom_get_disc_info(cdi, &di);
|
|
if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
|
|
return -1;
|
|
|
|
return di.erasable;
|
|
}
|
|
|
|
/*
|
|
* FIXME: check RO bit
|
|
*/
|
|
static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
|
|
{
|
|
int ret = cdrom_media_erasable(cdi);
|
|
|
|
/*
|
|
* allow writable open if media info read worked and media is
|
|
* erasable, _or_ if it fails since not all drives support it
|
|
*/
|
|
if (!ret)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
|
|
{
|
|
disc_information di;
|
|
int ret;
|
|
|
|
/*
|
|
* always reset to DMA lba space on open
|
|
*/
|
|
if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
|
|
pr_err("failed setting lba address space\n");
|
|
return 1;
|
|
}
|
|
|
|
ret = cdrom_get_disc_info(cdi, &di);
|
|
if (ret < 0 || ret < offsetof(typeof(di),disc_type))
|
|
return 1;
|
|
|
|
if (!di.erasable)
|
|
return 1;
|
|
|
|
/*
|
|
* mrw_status
|
|
* 0 - not MRW formatted
|
|
* 1 - MRW bgformat started, but not running or complete
|
|
* 2 - MRW bgformat in progress
|
|
* 3 - MRW formatting complete
|
|
*/
|
|
ret = 0;
|
|
pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]);
|
|
if (!di.mrw_status)
|
|
ret = 1;
|
|
else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
|
|
mrw_format_restart)
|
|
ret = cdrom_mrw_bgformat(cdi, 1);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mo_open_write(struct cdrom_device_info *cdi)
|
|
{
|
|
struct packet_command cgc;
|
|
char buffer[255];
|
|
int ret;
|
|
|
|
init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
|
|
cgc.quiet = 1;
|
|
|
|
/*
|
|
* obtain write protect information as per
|
|
* drivers/scsi/sd.c:sd_read_write_protect_flag
|
|
*/
|
|
|
|
ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
|
|
if (ret)
|
|
ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
|
|
if (ret) {
|
|
cgc.buflen = 255;
|
|
ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
|
|
}
|
|
|
|
/* drive gave us no info, let the user go ahead */
|
|
if (ret)
|
|
return 0;
|
|
|
|
return buffer[3] & 0x80;
|
|
}
|
|
|
|
static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
|
|
{
|
|
struct rwrt_feature_desc rfd;
|
|
int ret;
|
|
|
|
if ((ret = cdrom_has_defect_mgt(cdi)))
|
|
return ret;
|
|
|
|
if ((ret = cdrom_get_random_writable(cdi, &rfd)))
|
|
return ret;
|
|
else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
|
|
ret = !rfd.curr;
|
|
|
|
cd_dbg(CD_OPEN, "can open for random write\n");
|
|
return ret;
|
|
}
|
|
|
|
static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
|
|
{
|
|
struct packet_command cgc;
|
|
char buffer[32];
|
|
int ret, mmc3_profile;
|
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
|
|
|
|
cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
|
|
cgc.cmd[1] = 0;
|
|
cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */
|
|
cgc.cmd[8] = sizeof(buffer); /* Allocation Length */
|
|
cgc.quiet = 1;
|
|
|
|
if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
|
|
mmc3_profile = 0xffff;
|
|
else
|
|
mmc3_profile = (buffer[6] << 8) | buffer[7];
|
|
|
|
cdi->mmc3_profile = mmc3_profile;
|
|
}
|
|
|
|
static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
|
|
{
|
|
switch (cdi->mmc3_profile) {
|
|
case 0x12: /* DVD-RAM */
|
|
case 0x1A: /* DVD+RW */
|
|
case 0x43: /* BD-RE */
|
|
return 0;
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* returns 0 for ok to open write, non-0 to disallow
|
|
*/
|
|
static int cdrom_open_write(struct cdrom_device_info *cdi)
|
|
{
|
|
int mrw, mrw_write, ram_write;
|
|
int ret = 1;
|
|
|
|
mrw = 0;
|
|
if (!cdrom_is_mrw(cdi, &mrw_write))
|
|
mrw = 1;
|
|
|
|
if (CDROM_CAN(CDC_MO_DRIVE))
|
|
ram_write = 1;
|
|
else
|
|
(void) cdrom_is_random_writable(cdi, &ram_write);
|
|
|
|
if (mrw)
|
|
cdi->mask &= ~CDC_MRW;
|
|
else
|
|
cdi->mask |= CDC_MRW;
|
|
|
|
if (mrw_write)
|
|
cdi->mask &= ~CDC_MRW_W;
|
|
else
|
|
cdi->mask |= CDC_MRW_W;
|
|
|
|
if (ram_write)
|
|
cdi->mask &= ~CDC_RAM;
|
|
else
|
|
cdi->mask |= CDC_RAM;
|
|
|
|
if (CDROM_CAN(CDC_MRW_W))
|
|
ret = cdrom_mrw_open_write(cdi);
|
|
else if (CDROM_CAN(CDC_DVD_RAM))
|
|
ret = cdrom_dvdram_open_write(cdi);
|
|
else if (CDROM_CAN(CDC_RAM) &&
|
|
!CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
|
|
ret = cdrom_ram_open_write(cdi);
|
|
else if (CDROM_CAN(CDC_MO_DRIVE))
|
|
ret = mo_open_write(cdi);
|
|
else if (!cdrom_is_dvd_rw(cdi))
|
|
ret = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
|
|
{
|
|
struct packet_command cgc;
|
|
|
|
if (cdi->mmc3_profile != 0x1a) {
|
|
cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
|
|
return;
|
|
}
|
|
|
|
if (!cdi->media_written) {
|
|
cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
|
|
return;
|
|
}
|
|
|
|
pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name);
|
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
|
|
cgc.cmd[0] = GPCMD_FLUSH_CACHE;
|
|
cgc.timeout = 30*HZ;
|
|
cdi->ops->generic_packet(cdi, &cgc);
|
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
|
|
cgc.cmd[0] = GPCMD_CLOSE_TRACK;
|
|
cgc.timeout = 3000*HZ;
|
|
cgc.quiet = 1;
|
|
cdi->ops->generic_packet(cdi, &cgc);
|
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
|
|
cgc.cmd[0] = GPCMD_CLOSE_TRACK;
|
|
cgc.cmd[2] = 2; /* Close session */
|
|
cgc.quiet = 1;
|
|
cgc.timeout = 3000*HZ;
|
|
cdi->ops->generic_packet(cdi, &cgc);
|
|
|
|
cdi->media_written = 0;
|
|
}
|
|
|
|
static int cdrom_close_write(struct cdrom_device_info *cdi)
|
|
{
|
|
#if 0
|
|
return cdrom_flush_cache(cdi);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
/* badly broken, I know. Is due for a fixup anytime. */
|
|
static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks)
|
|
{
|
|
struct cdrom_tochdr header;
|
|
struct cdrom_tocentry entry;
|
|
int ret, i;
|
|
tracks->data = 0;
|
|
tracks->audio = 0;
|
|
tracks->cdi = 0;
|
|
tracks->xa = 0;
|
|
tracks->error = 0;
|
|
cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
|
|
/* Grab the TOC header so we can see how many tracks there are */
|
|
ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
|
|
if (ret) {
|
|
if (ret == -ENOMEDIUM)
|
|
tracks->error = CDS_NO_DISC;
|
|
else
|
|
tracks->error = CDS_NO_INFO;
|
|
return;
|
|
}
|
|
/* check what type of tracks are on this disc */
|
|
entry.cdte_format = CDROM_MSF;
|
|
for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
|
|
entry.cdte_track = i;
|
|
if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
|
|
tracks->error = CDS_NO_INFO;
|
|
return;
|
|
}
|
|
if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
|
|
if (entry.cdte_format == 0x10)
|
|
tracks->cdi++;
|
|
else if (entry.cdte_format == 0x20)
|
|
tracks->xa++;
|
|
else
|
|
tracks->data++;
|
|
} else {
|
|
tracks->audio++;
|
|
}
|
|
cd_dbg(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
|
|
i, entry.cdte_format, entry.cdte_ctrl);
|
|
}
|
|
cd_dbg(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
|
|
header.cdth_trk1, tracks->audio, tracks->data,
|
|
tracks->cdi, tracks->xa);
|
|
}
|
|
|
|
static
|
|
int open_for_data(struct cdrom_device_info *cdi)
|
|
{
|
|
int ret;
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
tracktype tracks;
|
|
cd_dbg(CD_OPEN, "entering open_for_data\n");
|
|
/* Check if the driver can report drive status. If it can, we
|
|
can do clever things. If it can't, well, we at least tried! */
|
|
if (cdo->drive_status != NULL) {
|
|
ret = cdo->drive_status(cdi, CDSL_CURRENT);
|
|
cd_dbg(CD_OPEN, "drive_status=%d\n", ret);
|
|
if (ret == CDS_TRAY_OPEN) {
|
|
cd_dbg(CD_OPEN, "the tray is open...\n");
|
|
/* can/may i close it? */
|
|
if (CDROM_CAN(CDC_CLOSE_TRAY) &&
|
|
cdi->options & CDO_AUTO_CLOSE) {
|
|
cd_dbg(CD_OPEN, "trying to close the tray\n");
|
|
ret=cdo->tray_move(cdi,0);
|
|
if (ret) {
|
|
cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n");
|
|
/* Ignore the error from the low
|
|
level driver. We don't care why it
|
|
couldn't close the tray. We only care
|
|
that there is no disc in the drive,
|
|
since that is the _REAL_ problem here.*/
|
|
ret=-ENOMEDIUM;
|
|
goto clean_up_and_return;
|
|
}
|
|
} else {
|
|
cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n");
|
|
ret=-ENOMEDIUM;
|
|
goto clean_up_and_return;
|
|
}
|
|
/* Ok, the door should be closed now.. Check again */
|
|
ret = cdo->drive_status(cdi, CDSL_CURRENT);
|
|
if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
|
|
cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
|
|
cd_dbg(CD_OPEN, "tray might not contain a medium\n");
|
|
ret=-ENOMEDIUM;
|
|
goto clean_up_and_return;
|
|
}
|
|
cd_dbg(CD_OPEN, "the tray is now closed\n");
|
|
}
|
|
/* the door should be closed now, check for the disc */
|
|
ret = cdo->drive_status(cdi, CDSL_CURRENT);
|
|
if (ret!=CDS_DISC_OK) {
|
|
ret = -ENOMEDIUM;
|
|
goto clean_up_and_return;
|
|
}
|
|
}
|
|
cdrom_count_tracks(cdi, &tracks);
|
|
if (tracks.error == CDS_NO_DISC) {
|
|
cd_dbg(CD_OPEN, "bummer. no disc.\n");
|
|
ret=-ENOMEDIUM;
|
|
goto clean_up_and_return;
|
|
}
|
|
/* CD-Players which don't use O_NONBLOCK, workman
|
|
* for example, need bit CDO_CHECK_TYPE cleared! */
|
|
if (tracks.data==0) {
|
|
if (cdi->options & CDO_CHECK_TYPE) {
|
|
/* give people a warning shot, now that CDO_CHECK_TYPE
|
|
is the default case! */
|
|
cd_dbg(CD_OPEN, "bummer. wrong media type.\n");
|
|
cd_dbg(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
|
|
(unsigned int)task_pid_nr(current));
|
|
ret=-EMEDIUMTYPE;
|
|
goto clean_up_and_return;
|
|
}
|
|
else {
|
|
cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n");
|
|
}
|
|
}
|
|
|
|
cd_dbg(CD_OPEN, "all seems well, opening the devicen");
|
|
|
|
/* all seems well, we can open the device */
|
|
ret = cdo->open(cdi, 0); /* open for data */
|
|
cd_dbg(CD_OPEN, "opening the device gave me %d\n", ret);
|
|
/* After all this careful checking, we shouldn't have problems
|
|
opening the device, but we don't want the device locked if
|
|
this somehow fails... */
|
|
if (ret) {
|
|
cd_dbg(CD_OPEN, "open device failed\n");
|
|
goto clean_up_and_return;
|
|
}
|
|
if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
|
|
cdo->lock_door(cdi, 1);
|
|
cd_dbg(CD_OPEN, "door locked\n");
|
|
}
|
|
cd_dbg(CD_OPEN, "device opened successfully\n");
|
|
return ret;
|
|
|
|
/* Something failed. Try to unlock the drive, because some drivers
|
|
(notably ide-cd) lock the drive after every command. This produced
|
|
a nasty bug where after mount failed, the drive would remain locked!
|
|
This ensures that the drive gets unlocked after a mount fails. This
|
|
is a goto to avoid bloating the driver with redundant code. */
|
|
clean_up_and_return:
|
|
cd_dbg(CD_OPEN, "open failed\n");
|
|
if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
|
|
cdo->lock_door(cdi, 0);
|
|
cd_dbg(CD_OPEN, "door unlocked\n");
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* We use the open-option O_NONBLOCK to indicate that the
|
|
* purpose of opening is only for subsequent ioctl() calls; no device
|
|
* integrity checks are performed.
|
|
*
|
|
* We hope that all cd-player programs will adopt this convention. It
|
|
* is in their own interest: device control becomes a lot easier
|
|
* this way.
|
|
*/
|
|
int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev,
|
|
fmode_t mode)
|
|
{
|
|
int ret;
|
|
|
|
cd_dbg(CD_OPEN, "entering cdrom_open\n");
|
|
|
|
/* if this was a O_NONBLOCK open and we should honor the flags,
|
|
* do a quick open without drive/disc integrity checks. */
|
|
cdi->use_count++;
|
|
if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) {
|
|
ret = cdi->ops->open(cdi, 1);
|
|
} else {
|
|
ret = open_for_data(cdi);
|
|
if (ret)
|
|
goto err;
|
|
cdrom_mmc3_profile(cdi);
|
|
if (mode & FMODE_WRITE) {
|
|
ret = -EROFS;
|
|
if (cdrom_open_write(cdi))
|
|
goto err_release;
|
|
if (!CDROM_CAN(CDC_RAM))
|
|
goto err_release;
|
|
ret = 0;
|
|
cdi->media_written = 0;
|
|
}
|
|
}
|
|
|
|
if (ret)
|
|
goto err;
|
|
|
|
cd_dbg(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
|
|
cdi->name, cdi->use_count);
|
|
return 0;
|
|
err_release:
|
|
if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
|
|
cdi->ops->lock_door(cdi, 0);
|
|
cd_dbg(CD_OPEN, "door unlocked\n");
|
|
}
|
|
cdi->ops->release(cdi);
|
|
err:
|
|
cdi->use_count--;
|
|
return ret;
|
|
}
|
|
|
|
/* This code is similar to that in open_for_data. The routine is called
|
|
whenever an audio play operation is requested.
|
|
*/
|
|
static int check_for_audio_disc(struct cdrom_device_info *cdi,
|
|
const struct cdrom_device_ops *cdo)
|
|
{
|
|
int ret;
|
|
tracktype tracks;
|
|
cd_dbg(CD_OPEN, "entering check_for_audio_disc\n");
|
|
if (!(cdi->options & CDO_CHECK_TYPE))
|
|
return 0;
|
|
if (cdo->drive_status != NULL) {
|
|
ret = cdo->drive_status(cdi, CDSL_CURRENT);
|
|
cd_dbg(CD_OPEN, "drive_status=%d\n", ret);
|
|
if (ret == CDS_TRAY_OPEN) {
|
|
cd_dbg(CD_OPEN, "the tray is open...\n");
|
|
/* can/may i close it? */
|
|
if (CDROM_CAN(CDC_CLOSE_TRAY) &&
|
|
cdi->options & CDO_AUTO_CLOSE) {
|
|
cd_dbg(CD_OPEN, "trying to close the tray\n");
|
|
ret=cdo->tray_move(cdi,0);
|
|
if (ret) {
|
|
cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n");
|
|
/* Ignore the error from the low
|
|
level driver. We don't care why it
|
|
couldn't close the tray. We only care
|
|
that there is no disc in the drive,
|
|
since that is the _REAL_ problem here.*/
|
|
return -ENOMEDIUM;
|
|
}
|
|
} else {
|
|
cd_dbg(CD_OPEN, "bummer. this driver can't close the tray.\n");
|
|
return -ENOMEDIUM;
|
|
}
|
|
/* Ok, the door should be closed now.. Check again */
|
|
ret = cdo->drive_status(cdi, CDSL_CURRENT);
|
|
if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
|
|
cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
|
|
return -ENOMEDIUM;
|
|
}
|
|
if (ret!=CDS_DISC_OK) {
|
|
cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n");
|
|
return -EIO;
|
|
}
|
|
cd_dbg(CD_OPEN, "the tray is now closed\n");
|
|
}
|
|
}
|
|
cdrom_count_tracks(cdi, &tracks);
|
|
if (tracks.error)
|
|
return(tracks.error);
|
|
|
|
if (tracks.audio==0)
|
|
return -EMEDIUMTYPE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
int opened_for_data;
|
|
|
|
cd_dbg(CD_CLOSE, "entering cdrom_release\n");
|
|
|
|
if (cdi->use_count > 0)
|
|
cdi->use_count--;
|
|
|
|
if (cdi->use_count == 0) {
|
|
cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n",
|
|
cdi->name);
|
|
cdrom_dvd_rw_close_write(cdi);
|
|
|
|
if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) {
|
|
cd_dbg(CD_CLOSE, "Unlocking door!\n");
|
|
cdo->lock_door(cdi, 0);
|
|
}
|
|
}
|
|
|
|
opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
|
|
!(mode & FMODE_NDELAY);
|
|
|
|
/*
|
|
* flush cache on last write release
|
|
*/
|
|
if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
|
|
cdrom_close_write(cdi);
|
|
|
|
cdo->release(cdi);
|
|
if (cdi->use_count == 0) { /* last process that closes dev*/
|
|
if (opened_for_data &&
|
|
cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
|
|
cdo->tray_move(cdi, 1);
|
|
}
|
|
}
|
|
|
|
static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
|
|
struct cdrom_changer_info *buf)
|
|
{
|
|
struct packet_command cgc;
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
int length;
|
|
|
|
/*
|
|
* Sanyo changer isn't spec compliant (doesn't use regular change
|
|
* LOAD_UNLOAD command, and it doesn't implement the mech status
|
|
* command below
|
|
*/
|
|
if (cdi->sanyo_slot) {
|
|
buf->hdr.nslots = 3;
|
|
buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
|
|
for (length = 0; length < 3; length++) {
|
|
buf->slots[length].disc_present = 1;
|
|
buf->slots[length].change = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
length = sizeof(struct cdrom_mechstat_header) +
|
|
cdi->capacity * sizeof(struct cdrom_slot);
|
|
|
|
init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
|
|
cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
|
|
cgc.cmd[8] = (length >> 8) & 0xff;
|
|
cgc.cmd[9] = length & 0xff;
|
|
return cdo->generic_packet(cdi, &cgc);
|
|
}
|
|
|
|
static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
|
|
{
|
|
struct cdrom_changer_info *info;
|
|
int ret;
|
|
|
|
cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n");
|
|
if (cdi->sanyo_slot)
|
|
return CDS_NO_INFO;
|
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
if ((ret = cdrom_read_mech_status(cdi, info)))
|
|
goto out_free;
|
|
|
|
if (info->slots[slot].disc_present)
|
|
ret = CDS_DISC_OK;
|
|
else
|
|
ret = CDS_NO_DISC;
|
|
|
|
out_free:
|
|
kfree(info);
|
|
return ret;
|
|
}
|
|
|
|
/* Return the number of slots for an ATAPI/SCSI cdrom,
|
|
* return 1 if not a changer.
|
|
*/
|
|
int cdrom_number_of_slots(struct cdrom_device_info *cdi)
|
|
{
|
|
int status;
|
|
int nslots = 1;
|
|
struct cdrom_changer_info *info;
|
|
|
|
cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n");
|
|
/* cdrom_read_mech_status requires a valid value for capacity: */
|
|
cdi->capacity = 0;
|
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
if ((status = cdrom_read_mech_status(cdi, info)) == 0)
|
|
nslots = info->hdr.nslots;
|
|
|
|
kfree(info);
|
|
return nslots;
|
|
}
|
|
|
|
|
|
/* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
|
|
static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
|
|
{
|
|
struct packet_command cgc;
|
|
|
|
cd_dbg(CD_CHANGER, "entering cdrom_load_unload()\n");
|
|
if (cdi->sanyo_slot && slot < 0)
|
|
return 0;
|
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
|
|
cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
|
|
cgc.cmd[4] = 2 + (slot >= 0);
|
|
cgc.cmd[8] = slot;
|
|
cgc.timeout = 60 * HZ;
|
|
|
|
/* The Sanyo 3 CD changer uses byte 7 of the
|
|
GPCMD_TEST_UNIT_READY to command to switch CDs instead of
|
|
using the GPCMD_LOAD_UNLOAD opcode. */
|
|
if (cdi->sanyo_slot && -1 < slot) {
|
|
cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
|
|
cgc.cmd[7] = slot;
|
|
cgc.cmd[4] = cgc.cmd[8] = 0;
|
|
cdi->sanyo_slot = slot ? slot : 3;
|
|
}
|
|
|
|
return cdi->ops->generic_packet(cdi, &cgc);
|
|
}
|
|
|
|
static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
|
|
{
|
|
struct cdrom_changer_info *info;
|
|
int curslot;
|
|
int ret;
|
|
|
|
cd_dbg(CD_CHANGER, "entering cdrom_select_disc()\n");
|
|
if (!CDROM_CAN(CDC_SELECT_DISC))
|
|
return -EDRIVE_CANT_DO_THIS;
|
|
|
|
if (cdi->ops->check_events)
|
|
cdi->ops->check_events(cdi, 0, slot);
|
|
else
|
|
cdi->ops->media_changed(cdi, slot);
|
|
|
|
if (slot == CDSL_NONE) {
|
|
/* set media changed bits, on both queues */
|
|
cdi->mc_flags = 0x3;
|
|
return cdrom_load_unload(cdi, -1);
|
|
}
|
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
if ((ret = cdrom_read_mech_status(cdi, info))) {
|
|
kfree(info);
|
|
return ret;
|
|
}
|
|
|
|
curslot = info->hdr.curslot;
|
|
kfree(info);
|
|
|
|
if (cdi->use_count > 1 || cdi->keeplocked) {
|
|
if (slot == CDSL_CURRENT) {
|
|
return curslot;
|
|
} else {
|
|
return -EBUSY;
|
|
}
|
|
}
|
|
|
|
/* Specifying CDSL_CURRENT will attempt to load the currnet slot,
|
|
which is useful if it had been previously unloaded.
|
|
Whether it can or not, it returns the current slot.
|
|
Similarly, if slot happens to be the current one, we still
|
|
try and load it. */
|
|
if (slot == CDSL_CURRENT)
|
|
slot = curslot;
|
|
|
|
/* set media changed bits on both queues */
|
|
cdi->mc_flags = 0x3;
|
|
if ((ret = cdrom_load_unload(cdi, slot)))
|
|
return ret;
|
|
|
|
return slot;
|
|
}
|
|
|
|
/*
|
|
* As cdrom implements an extra ioctl consumer for media changed
|
|
* event, it needs to buffer ->check_events() output, such that event
|
|
* is not lost for both the usual VFS and ioctl paths.
|
|
* cdi->{vfs|ioctl}_events are used to buffer pending events for each
|
|
* path.
|
|
*
|
|
* XXX: Locking is non-existent. cdi->ops->check_events() can be
|
|
* called in parallel and buffering fields are accessed without any
|
|
* exclusion. The original media_changed code had the same problem.
|
|
* It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl
|
|
* and remove this cruft altogether. It doesn't have much usefulness
|
|
* at this point.
|
|
*/
|
|
static void cdrom_update_events(struct cdrom_device_info *cdi,
|
|
unsigned int clearing)
|
|
{
|
|
unsigned int events;
|
|
|
|
events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT);
|
|
cdi->vfs_events |= events;
|
|
cdi->ioctl_events |= events;
|
|
}
|
|
|
|
unsigned int cdrom_check_events(struct cdrom_device_info *cdi,
|
|
unsigned int clearing)
|
|
{
|
|
unsigned int events;
|
|
|
|
cdrom_update_events(cdi, clearing);
|
|
events = cdi->vfs_events;
|
|
cdi->vfs_events = 0;
|
|
return events;
|
|
}
|
|
EXPORT_SYMBOL(cdrom_check_events);
|
|
|
|
/* We want to make media_changed accessible to the user through an
|
|
* ioctl. The main problem now is that we must double-buffer the
|
|
* low-level implementation, to assure that the VFS and the user both
|
|
* see a medium change once.
|
|
*/
|
|
|
|
static
|
|
int media_changed(struct cdrom_device_info *cdi, int queue)
|
|
{
|
|
unsigned int mask = (1 << (queue & 1));
|
|
int ret = !!(cdi->mc_flags & mask);
|
|
bool changed;
|
|
|
|
if (!CDROM_CAN(CDC_MEDIA_CHANGED))
|
|
return ret;
|
|
|
|
/* changed since last call? */
|
|
if (cdi->ops->check_events) {
|
|
BUG_ON(!queue); /* shouldn't be called from VFS path */
|
|
cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE);
|
|
changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE;
|
|
cdi->ioctl_events = 0;
|
|
} else
|
|
changed = cdi->ops->media_changed(cdi, CDSL_CURRENT);
|
|
|
|
if (changed) {
|
|
cdi->mc_flags = 0x3; /* set bit on both queues */
|
|
ret |= 1;
|
|
cdi->media_written = 0;
|
|
}
|
|
|
|
cdi->mc_flags &= ~mask; /* clear bit */
|
|
return ret;
|
|
}
|
|
|
|
int cdrom_media_changed(struct cdrom_device_info *cdi)
|
|
{
|
|
/* This talks to the VFS, which doesn't like errors - just 1 or 0.
|
|
* Returning "0" is always safe (media hasn't been changed). Do that
|
|
* if the low-level cdrom driver dosn't support media changed. */
|
|
if (cdi == NULL || cdi->ops->media_changed == NULL)
|
|
return 0;
|
|
if (!CDROM_CAN(CDC_MEDIA_CHANGED))
|
|
return 0;
|
|
return media_changed(cdi, 0);
|
|
}
|
|
|
|
/* Requests to the low-level drivers will /always/ be done in the
|
|
following format convention:
|
|
|
|
CDROM_LBA: all data-related requests.
|
|
CDROM_MSF: all audio-related requests.
|
|
|
|
However, a low-level implementation is allowed to refuse this
|
|
request, and return information in its own favorite format.
|
|
|
|
It doesn't make sense /at all/ to ask for a play_audio in LBA
|
|
format, or ask for multi-session info in MSF format. However, for
|
|
backward compatibility these format requests will be satisfied, but
|
|
the requests to the low-level drivers will be sanitized in the more
|
|
meaningful format indicated above.
|
|
*/
|
|
|
|
static
|
|
void sanitize_format(union cdrom_addr *addr,
|
|
u_char * curr, u_char requested)
|
|
{
|
|
if (*curr == requested)
|
|
return; /* nothing to be done! */
|
|
if (requested == CDROM_LBA) {
|
|
addr->lba = (int) addr->msf.frame +
|
|
75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
|
|
} else { /* CDROM_MSF */
|
|
int lba = addr->lba;
|
|
addr->msf.frame = lba % 75;
|
|
lba /= 75;
|
|
lba += 2;
|
|
addr->msf.second = lba % 60;
|
|
addr->msf.minute = lba / 60;
|
|
}
|
|
*curr = requested;
|
|
}
|
|
|
|
void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
|
|
int type)
|
|
{
|
|
memset(cgc, 0, sizeof(struct packet_command));
|
|
if (buf)
|
|
memset(buf, 0, len);
|
|
cgc->buffer = (char *) buf;
|
|
cgc->buflen = len;
|
|
cgc->data_direction = type;
|
|
cgc->timeout = CDROM_DEF_TIMEOUT;
|
|
}
|
|
|
|
/* DVD handling */
|
|
|
|
#define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
|
|
#define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
|
|
|
|
static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
|
|
{
|
|
cgc->cmd[0] = GPCMD_REPORT_KEY;
|
|
cgc->cmd[10] = type | (agid << 6);
|
|
switch (type) {
|
|
case 0: case 8: case 5: {
|
|
cgc->buflen = 8;
|
|
break;
|
|
}
|
|
case 1: {
|
|
cgc->buflen = 16;
|
|
break;
|
|
}
|
|
case 2: case 4: {
|
|
cgc->buflen = 12;
|
|
break;
|
|
}
|
|
}
|
|
cgc->cmd[9] = cgc->buflen;
|
|
cgc->data_direction = CGC_DATA_READ;
|
|
}
|
|
|
|
static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
|
|
{
|
|
cgc->cmd[0] = GPCMD_SEND_KEY;
|
|
cgc->cmd[10] = type | (agid << 6);
|
|
switch (type) {
|
|
case 1: {
|
|
cgc->buflen = 16;
|
|
break;
|
|
}
|
|
case 3: {
|
|
cgc->buflen = 12;
|
|
break;
|
|
}
|
|
case 6: {
|
|
cgc->buflen = 8;
|
|
break;
|
|
}
|
|
}
|
|
cgc->cmd[9] = cgc->buflen;
|
|
cgc->data_direction = CGC_DATA_WRITE;
|
|
}
|
|
|
|
static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
|
|
{
|
|
int ret;
|
|
u_char buf[20];
|
|
struct packet_command cgc;
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
rpc_state_t rpc_state;
|
|
|
|
memset(buf, 0, sizeof(buf));
|
|
init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
|
|
|
|
switch (ai->type) {
|
|
/* LU data send */
|
|
case DVD_LU_SEND_AGID:
|
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n");
|
|
cgc.quiet = 1;
|
|
setup_report_key(&cgc, ai->lsa.agid, 0);
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
ai->lsa.agid = buf[7] >> 6;
|
|
/* Returning data, let host change state */
|
|
break;
|
|
|
|
case DVD_LU_SEND_KEY1:
|
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
|
|
setup_report_key(&cgc, ai->lsk.agid, 2);
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
copy_key(ai->lsk.key, &buf[4]);
|
|
/* Returning data, let host change state */
|
|
break;
|
|
|
|
case DVD_LU_SEND_CHALLENGE:
|
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
|
|
setup_report_key(&cgc, ai->lsc.agid, 1);
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
copy_chal(ai->lsc.chal, &buf[4]);
|
|
/* Returning data, let host change state */
|
|
break;
|
|
|
|
/* Post-auth key */
|
|
case DVD_LU_SEND_TITLE_KEY:
|
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
|
|
cgc.quiet = 1;
|
|
setup_report_key(&cgc, ai->lstk.agid, 4);
|
|
cgc.cmd[5] = ai->lstk.lba;
|
|
cgc.cmd[4] = ai->lstk.lba >> 8;
|
|
cgc.cmd[3] = ai->lstk.lba >> 16;
|
|
cgc.cmd[2] = ai->lstk.lba >> 24;
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
ai->lstk.cpm = (buf[4] >> 7) & 1;
|
|
ai->lstk.cp_sec = (buf[4] >> 6) & 1;
|
|
ai->lstk.cgms = (buf[4] >> 4) & 3;
|
|
copy_key(ai->lstk.title_key, &buf[5]);
|
|
/* Returning data, let host change state */
|
|
break;
|
|
|
|
case DVD_LU_SEND_ASF:
|
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n");
|
|
setup_report_key(&cgc, ai->lsasf.agid, 5);
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
ai->lsasf.asf = buf[7] & 1;
|
|
break;
|
|
|
|
/* LU data receive (LU changes state) */
|
|
case DVD_HOST_SEND_CHALLENGE:
|
|
cd_dbg(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
|
|
setup_send_key(&cgc, ai->hsc.agid, 1);
|
|
buf[1] = 0xe;
|
|
copy_chal(&buf[4], ai->hsc.chal);
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
ai->type = DVD_LU_SEND_KEY1;
|
|
break;
|
|
|
|
case DVD_HOST_SEND_KEY2:
|
|
cd_dbg(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
|
|
setup_send_key(&cgc, ai->hsk.agid, 3);
|
|
buf[1] = 0xa;
|
|
copy_key(&buf[4], ai->hsk.key);
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) {
|
|
ai->type = DVD_AUTH_FAILURE;
|
|
return ret;
|
|
}
|
|
ai->type = DVD_AUTH_ESTABLISHED;
|
|
break;
|
|
|
|
/* Misc */
|
|
case DVD_INVALIDATE_AGID:
|
|
cgc.quiet = 1;
|
|
cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
|
|
setup_report_key(&cgc, ai->lsa.agid, 0x3f);
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
break;
|
|
|
|
/* Get region settings */
|
|
case DVD_LU_SEND_RPC_STATE:
|
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
|
|
setup_report_key(&cgc, 0, 8);
|
|
memset(&rpc_state, 0, sizeof(rpc_state_t));
|
|
cgc.buffer = (char *) &rpc_state;
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
ai->lrpcs.type = rpc_state.type_code;
|
|
ai->lrpcs.vra = rpc_state.vra;
|
|
ai->lrpcs.ucca = rpc_state.ucca;
|
|
ai->lrpcs.region_mask = rpc_state.region_mask;
|
|
ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
|
|
break;
|
|
|
|
/* Set region settings */
|
|
case DVD_HOST_SEND_RPC_STATE:
|
|
cd_dbg(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
|
|
setup_send_key(&cgc, 0, 6);
|
|
buf[1] = 6;
|
|
buf[4] = ai->hrpcs.pdrc;
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
break;
|
|
|
|
default:
|
|
cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
|
|
return -ENOTTY;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s,
|
|
struct packet_command *cgc)
|
|
{
|
|
unsigned char buf[21], *base;
|
|
struct dvd_layer *layer;
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
int ret, layer_num = s->physical.layer_num;
|
|
|
|
if (layer_num >= DVD_LAYERS)
|
|
return -EINVAL;
|
|
|
|
init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
|
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
|
|
cgc->cmd[6] = layer_num;
|
|
cgc->cmd[7] = s->type;
|
|
cgc->cmd[9] = cgc->buflen & 0xff;
|
|
|
|
/*
|
|
* refrain from reporting errors on non-existing layers (mainly)
|
|
*/
|
|
cgc->quiet = 1;
|
|
|
|
ret = cdo->generic_packet(cdi, cgc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
base = &buf[4];
|
|
layer = &s->physical.layer[layer_num];
|
|
|
|
/*
|
|
* place the data... really ugly, but at least we won't have to
|
|
* worry about endianess in userspace.
|
|
*/
|
|
memset(layer, 0, sizeof(*layer));
|
|
layer->book_version = base[0] & 0xf;
|
|
layer->book_type = base[0] >> 4;
|
|
layer->min_rate = base[1] & 0xf;
|
|
layer->disc_size = base[1] >> 4;
|
|
layer->layer_type = base[2] & 0xf;
|
|
layer->track_path = (base[2] >> 4) & 1;
|
|
layer->nlayers = (base[2] >> 5) & 3;
|
|
layer->track_density = base[3] & 0xf;
|
|
layer->linear_density = base[3] >> 4;
|
|
layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
|
|
layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
|
|
layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
|
|
layer->bca = base[16] >> 7;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s,
|
|
struct packet_command *cgc)
|
|
{
|
|
int ret;
|
|
u_char buf[8];
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
|
|
init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
|
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
|
|
cgc->cmd[6] = s->copyright.layer_num;
|
|
cgc->cmd[7] = s->type;
|
|
cgc->cmd[8] = cgc->buflen >> 8;
|
|
cgc->cmd[9] = cgc->buflen & 0xff;
|
|
|
|
ret = cdo->generic_packet(cdi, cgc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
s->copyright.cpst = buf[4];
|
|
s->copyright.rmi = buf[5];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s,
|
|
struct packet_command *cgc)
|
|
{
|
|
int ret, size;
|
|
u_char *buf;
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
|
|
size = sizeof(s->disckey.value) + 4;
|
|
|
|
buf = kmalloc(size, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
|
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
|
|
cgc->cmd[7] = s->type;
|
|
cgc->cmd[8] = size >> 8;
|
|
cgc->cmd[9] = size & 0xff;
|
|
cgc->cmd[10] = s->disckey.agid << 6;
|
|
|
|
ret = cdo->generic_packet(cdi, cgc);
|
|
if (!ret)
|
|
memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
|
|
|
|
kfree(buf);
|
|
return ret;
|
|
}
|
|
|
|
static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s,
|
|
struct packet_command *cgc)
|
|
{
|
|
int ret, size = 4 + 188;
|
|
u_char *buf;
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
|
|
buf = kmalloc(size, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
|
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
|
|
cgc->cmd[7] = s->type;
|
|
cgc->cmd[9] = cgc->buflen & 0xff;
|
|
|
|
ret = cdo->generic_packet(cdi, cgc);
|
|
if (ret)
|
|
goto out;
|
|
|
|
s->bca.len = buf[0] << 8 | buf[1];
|
|
if (s->bca.len < 12 || s->bca.len > 188) {
|
|
cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n",
|
|
s->bca.len);
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
memcpy(s->bca.value, &buf[4], s->bca.len);
|
|
ret = 0;
|
|
out:
|
|
kfree(buf);
|
|
return ret;
|
|
}
|
|
|
|
static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s,
|
|
struct packet_command *cgc)
|
|
{
|
|
int ret = 0, size;
|
|
u_char *buf;
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
|
|
size = sizeof(s->manufact.value) + 4;
|
|
|
|
buf = kmalloc(size, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
|
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
|
|
cgc->cmd[7] = s->type;
|
|
cgc->cmd[8] = size >> 8;
|
|
cgc->cmd[9] = size & 0xff;
|
|
|
|
ret = cdo->generic_packet(cdi, cgc);
|
|
if (ret)
|
|
goto out;
|
|
|
|
s->manufact.len = buf[0] << 8 | buf[1];
|
|
if (s->manufact.len < 0) {
|
|
cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n",
|
|
s->manufact.len);
|
|
ret = -EIO;
|
|
} else {
|
|
if (s->manufact.len > 2048) {
|
|
cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d): truncating to 2048\n",
|
|
s->manufact.len);
|
|
s->manufact.len = 2048;
|
|
}
|
|
memcpy(s->manufact.value, &buf[4], s->manufact.len);
|
|
}
|
|
|
|
out:
|
|
kfree(buf);
|
|
return ret;
|
|
}
|
|
|
|
static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s,
|
|
struct packet_command *cgc)
|
|
{
|
|
switch (s->type) {
|
|
case DVD_STRUCT_PHYSICAL:
|
|
return dvd_read_physical(cdi, s, cgc);
|
|
|
|
case DVD_STRUCT_COPYRIGHT:
|
|
return dvd_read_copyright(cdi, s, cgc);
|
|
|
|
case DVD_STRUCT_DISCKEY:
|
|
return dvd_read_disckey(cdi, s, cgc);
|
|
|
|
case DVD_STRUCT_BCA:
|
|
return dvd_read_bca(cdi, s, cgc);
|
|
|
|
case DVD_STRUCT_MANUFACT:
|
|
return dvd_read_manufact(cdi, s, cgc);
|
|
|
|
default:
|
|
cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
|
|
s->type);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
int cdrom_mode_sense(struct cdrom_device_info *cdi,
|
|
struct packet_command *cgc,
|
|
int page_code, int page_control)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
|
|
memset(cgc->cmd, 0, sizeof(cgc->cmd));
|
|
|
|
cgc->cmd[0] = GPCMD_MODE_SENSE_10;
|
|
cgc->cmd[2] = page_code | (page_control << 6);
|
|
cgc->cmd[7] = cgc->buflen >> 8;
|
|
cgc->cmd[8] = cgc->buflen & 0xff;
|
|
cgc->data_direction = CGC_DATA_READ;
|
|
return cdo->generic_packet(cdi, cgc);
|
|
}
|
|
|
|
int cdrom_mode_select(struct cdrom_device_info *cdi,
|
|
struct packet_command *cgc)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
|
|
memset(cgc->cmd, 0, sizeof(cgc->cmd));
|
|
memset(cgc->buffer, 0, 2);
|
|
cgc->cmd[0] = GPCMD_MODE_SELECT_10;
|
|
cgc->cmd[1] = 0x10; /* PF */
|
|
cgc->cmd[7] = cgc->buflen >> 8;
|
|
cgc->cmd[8] = cgc->buflen & 0xff;
|
|
cgc->data_direction = CGC_DATA_WRITE;
|
|
return cdo->generic_packet(cdi, cgc);
|
|
}
|
|
|
|
static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
|
|
struct cdrom_subchnl *subchnl, int mcn)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
struct packet_command cgc;
|
|
char buffer[32];
|
|
int ret;
|
|
|
|
init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
|
|
cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
|
|
cgc.cmd[1] = subchnl->cdsc_format;/* MSF or LBA addressing */
|
|
cgc.cmd[2] = 0x40; /* request subQ data */
|
|
cgc.cmd[3] = mcn ? 2 : 1;
|
|
cgc.cmd[8] = 16;
|
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc)))
|
|
return ret;
|
|
|
|
subchnl->cdsc_audiostatus = cgc.buffer[1];
|
|
subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
|
|
subchnl->cdsc_trk = cgc.buffer[6];
|
|
subchnl->cdsc_ind = cgc.buffer[7];
|
|
|
|
if (subchnl->cdsc_format == CDROM_LBA) {
|
|
subchnl->cdsc_absaddr.lba = ((cgc.buffer[8] << 24) |
|
|
(cgc.buffer[9] << 16) |
|
|
(cgc.buffer[10] << 8) |
|
|
(cgc.buffer[11]));
|
|
subchnl->cdsc_reladdr.lba = ((cgc.buffer[12] << 24) |
|
|
(cgc.buffer[13] << 16) |
|
|
(cgc.buffer[14] << 8) |
|
|
(cgc.buffer[15]));
|
|
} else {
|
|
subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
|
|
subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
|
|
subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
|
|
subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
|
|
subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
|
|
subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Specific READ_10 interface
|
|
*/
|
|
static int cdrom_read_cd(struct cdrom_device_info *cdi,
|
|
struct packet_command *cgc, int lba,
|
|
int blocksize, int nblocks)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
|
|
memset(&cgc->cmd, 0, sizeof(cgc->cmd));
|
|
cgc->cmd[0] = GPCMD_READ_10;
|
|
cgc->cmd[2] = (lba >> 24) & 0xff;
|
|
cgc->cmd[3] = (lba >> 16) & 0xff;
|
|
cgc->cmd[4] = (lba >> 8) & 0xff;
|
|
cgc->cmd[5] = lba & 0xff;
|
|
cgc->cmd[6] = (nblocks >> 16) & 0xff;
|
|
cgc->cmd[7] = (nblocks >> 8) & 0xff;
|
|
cgc->cmd[8] = nblocks & 0xff;
|
|
cgc->buflen = blocksize * nblocks;
|
|
return cdo->generic_packet(cdi, cgc);
|
|
}
|
|
|
|
/* very generic interface for reading the various types of blocks */
|
|
static int cdrom_read_block(struct cdrom_device_info *cdi,
|
|
struct packet_command *cgc,
|
|
int lba, int nblocks, int format, int blksize)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
|
|
memset(&cgc->cmd, 0, sizeof(cgc->cmd));
|
|
cgc->cmd[0] = GPCMD_READ_CD;
|
|
/* expected sector size - cdda,mode1,etc. */
|
|
cgc->cmd[1] = format << 2;
|
|
/* starting address */
|
|
cgc->cmd[2] = (lba >> 24) & 0xff;
|
|
cgc->cmd[3] = (lba >> 16) & 0xff;
|
|
cgc->cmd[4] = (lba >> 8) & 0xff;
|
|
cgc->cmd[5] = lba & 0xff;
|
|
/* number of blocks */
|
|
cgc->cmd[6] = (nblocks >> 16) & 0xff;
|
|
cgc->cmd[7] = (nblocks >> 8) & 0xff;
|
|
cgc->cmd[8] = nblocks & 0xff;
|
|
cgc->buflen = blksize * nblocks;
|
|
|
|
/* set the header info returned */
|
|
switch (blksize) {
|
|
case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
|
|
case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
|
|
case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
|
|
default : cgc->cmd[9] = 0x10;
|
|
}
|
|
|
|
return cdo->generic_packet(cdi, cgc);
|
|
}
|
|
|
|
static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
|
|
int lba, int nframes)
|
|
{
|
|
struct packet_command cgc;
|
|
int ret = 0;
|
|
int nr;
|
|
|
|
cdi->last_sense = 0;
|
|
|
|
memset(&cgc, 0, sizeof(cgc));
|
|
|
|
/*
|
|
* start with will ra.nframes size, back down if alloc fails
|
|
*/
|
|
nr = nframes;
|
|
do {
|
|
cgc.buffer = kmalloc_array(nr, CD_FRAMESIZE_RAW, GFP_KERNEL);
|
|
if (cgc.buffer)
|
|
break;
|
|
|
|
nr >>= 1;
|
|
} while (nr);
|
|
|
|
if (!nr)
|
|
return -ENOMEM;
|
|
|
|
cgc.data_direction = CGC_DATA_READ;
|
|
while (nframes > 0) {
|
|
if (nr > nframes)
|
|
nr = nframes;
|
|
|
|
ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
|
|
if (ret)
|
|
break;
|
|
if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
|
|
ret = -EFAULT;
|
|
break;
|
|
}
|
|
ubuf += CD_FRAMESIZE_RAW * nr;
|
|
nframes -= nr;
|
|
lba += nr;
|
|
}
|
|
kfree(cgc.buffer);
|
|
return ret;
|
|
}
|
|
|
|
static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
|
|
int lba, int nframes)
|
|
{
|
|
struct request_queue *q = cdi->disk->queue;
|
|
struct request *rq;
|
|
struct scsi_request *req;
|
|
struct bio *bio;
|
|
unsigned int len;
|
|
int nr, ret = 0;
|
|
|
|
if (!q)
|
|
return -ENXIO;
|
|
|
|
if (!blk_queue_scsi_passthrough(q)) {
|
|
WARN_ONCE(true,
|
|
"Attempt read CDDA info through a non-SCSI queue\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
cdi->last_sense = 0;
|
|
|
|
while (nframes) {
|
|
nr = nframes;
|
|
if (cdi->cdda_method == CDDA_BPC_SINGLE)
|
|
nr = 1;
|
|
if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9))
|
|
nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW;
|
|
|
|
len = nr * CD_FRAMESIZE_RAW;
|
|
|
|
rq = blk_get_request(q, REQ_OP_SCSI_IN, 0);
|
|
if (IS_ERR(rq)) {
|
|
ret = PTR_ERR(rq);
|
|
break;
|
|
}
|
|
req = scsi_req(rq);
|
|
|
|
ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL);
|
|
if (ret) {
|
|
blk_put_request(rq);
|
|
break;
|
|
}
|
|
|
|
req->cmd[0] = GPCMD_READ_CD;
|
|
req->cmd[1] = 1 << 2;
|
|
req->cmd[2] = (lba >> 24) & 0xff;
|
|
req->cmd[3] = (lba >> 16) & 0xff;
|
|
req->cmd[4] = (lba >> 8) & 0xff;
|
|
req->cmd[5] = lba & 0xff;
|
|
req->cmd[6] = (nr >> 16) & 0xff;
|
|
req->cmd[7] = (nr >> 8) & 0xff;
|
|
req->cmd[8] = nr & 0xff;
|
|
req->cmd[9] = 0xf8;
|
|
|
|
req->cmd_len = 12;
|
|
rq->timeout = 60 * HZ;
|
|
bio = rq->bio;
|
|
|
|
blk_execute_rq(q, cdi->disk, rq, 0);
|
|
if (scsi_req(rq)->result) {
|
|
struct request_sense *s = req->sense;
|
|
ret = -EIO;
|
|
cdi->last_sense = s->sense_key;
|
|
}
|
|
|
|
if (blk_rq_unmap_user(bio))
|
|
ret = -EFAULT;
|
|
blk_put_request(rq);
|
|
|
|
if (ret)
|
|
break;
|
|
|
|
nframes -= nr;
|
|
lba += nr;
|
|
ubuf += len;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
|
|
int lba, int nframes)
|
|
{
|
|
int ret;
|
|
|
|
if (cdi->cdda_method == CDDA_OLD)
|
|
return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
|
|
|
|
retry:
|
|
/*
|
|
* for anything else than success and io error, we need to retry
|
|
*/
|
|
ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
|
|
if (!ret || ret != -EIO)
|
|
return ret;
|
|
|
|
/*
|
|
* I've seen drives get sense 4/8/3 udma crc errors on multi
|
|
* frame dma, so drop to single frame dma if we need to
|
|
*/
|
|
if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
|
|
pr_info("dropping to single frame dma\n");
|
|
cdi->cdda_method = CDDA_BPC_SINGLE;
|
|
goto retry;
|
|
}
|
|
|
|
/*
|
|
* so we have an io error of some sort with multi frame dma. if the
|
|
* condition wasn't a hardware error
|
|
* problems, not for any error
|
|
*/
|
|
if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
|
|
return ret;
|
|
|
|
pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense);
|
|
cdi->cdda_method = CDDA_OLD;
|
|
return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
|
|
}
|
|
|
|
static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
|
|
void __user *argp)
|
|
{
|
|
struct cdrom_multisession ms_info;
|
|
u8 requested_format;
|
|
int ret;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
|
|
|
|
if (!(cdi->ops->capability & CDC_MULTI_SESSION))
|
|
return -ENOSYS;
|
|
|
|
if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
|
|
return -EFAULT;
|
|
|
|
requested_format = ms_info.addr_format;
|
|
if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
|
|
return -EINVAL;
|
|
ms_info.addr_format = CDROM_LBA;
|
|
|
|
ret = cdi->ops->get_last_session(cdi, &ms_info);
|
|
if (ret)
|
|
return ret;
|
|
|
|
sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
|
|
|
|
if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
|
|
return -EFAULT;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n");
|
|
|
|
if (!CDROM_CAN(CDC_OPEN_TRAY))
|
|
return -ENOSYS;
|
|
if (cdi->use_count != 1 || cdi->keeplocked)
|
|
return -EBUSY;
|
|
if (CDROM_CAN(CDC_LOCK)) {
|
|
int ret = cdi->ops->lock_door(cdi, 0);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return cdi->ops->tray_move(cdi, 1);
|
|
}
|
|
|
|
static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
|
|
|
|
if (!CDROM_CAN(CDC_CLOSE_TRAY))
|
|
return -ENOSYS;
|
|
return cdi->ops->tray_move(cdi, 0);
|
|
}
|
|
|
|
static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
|
|
unsigned long arg)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
|
|
|
|
if (!CDROM_CAN(CDC_OPEN_TRAY))
|
|
return -ENOSYS;
|
|
if (cdi->keeplocked)
|
|
return -EBUSY;
|
|
|
|
cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
|
|
if (arg)
|
|
cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
|
|
unsigned long arg)
|
|
{
|
|
struct cdrom_changer_info *info;
|
|
int ret;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
|
|
|
|
if (!CDROM_CAN(CDC_MEDIA_CHANGED))
|
|
return -ENOSYS;
|
|
|
|
/* cannot select disc or select current disc */
|
|
if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
|
|
return media_changed(cdi, 1);
|
|
|
|
if (arg >= cdi->capacity)
|
|
return -EINVAL;
|
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
ret = cdrom_read_mech_status(cdi, info);
|
|
if (!ret)
|
|
ret = info->slots[arg].change;
|
|
kfree(info);
|
|
return ret;
|
|
}
|
|
|
|
static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
|
|
unsigned long arg)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
|
|
|
|
/*
|
|
* Options need to be in sync with capability.
|
|
* Too late for that, so we have to check each one separately.
|
|
*/
|
|
switch (arg) {
|
|
case CDO_USE_FFLAGS:
|
|
case CDO_CHECK_TYPE:
|
|
break;
|
|
case CDO_LOCK:
|
|
if (!CDROM_CAN(CDC_LOCK))
|
|
return -ENOSYS;
|
|
break;
|
|
case 0:
|
|
return cdi->options;
|
|
/* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
|
|
default:
|
|
if (!CDROM_CAN(arg))
|
|
return -ENOSYS;
|
|
}
|
|
cdi->options |= (int) arg;
|
|
return cdi->options;
|
|
}
|
|
|
|
static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
|
|
unsigned long arg)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
|
|
|
|
cdi->options &= ~(int) arg;
|
|
return cdi->options;
|
|
}
|
|
|
|
static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
|
|
unsigned long arg)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
|
|
|
|
if (!CDROM_CAN(CDC_SELECT_SPEED))
|
|
return -ENOSYS;
|
|
return cdi->ops->select_speed(cdi, arg);
|
|
}
|
|
|
|
static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
|
|
unsigned long arg)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
|
|
|
|
if (!CDROM_CAN(CDC_SELECT_DISC))
|
|
return -ENOSYS;
|
|
|
|
if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
|
|
if ((int)arg >= cdi->capacity)
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* ->select_disc is a hook to allow a driver-specific way of
|
|
* seleting disc. However, since there is no equivalent hook for
|
|
* cdrom_slot_status this may not actually be useful...
|
|
*/
|
|
if (cdi->ops->select_disc)
|
|
return cdi->ops->select_disc(cdi, arg);
|
|
|
|
cd_dbg(CD_CHANGER, "Using generic cdrom_select_disc()\n");
|
|
return cdrom_select_disc(cdi, arg);
|
|
}
|
|
|
|
static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
|
|
struct block_device *bdev)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n");
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
if (!CDROM_CAN(CDC_RESET))
|
|
return -ENOSYS;
|
|
invalidate_bdev(bdev);
|
|
return cdi->ops->reset(cdi);
|
|
}
|
|
|
|
static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
|
|
unsigned long arg)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl");
|
|
|
|
if (!CDROM_CAN(CDC_LOCK))
|
|
return -EDRIVE_CANT_DO_THIS;
|
|
|
|
cdi->keeplocked = arg ? 1 : 0;
|
|
|
|
/*
|
|
* Don't unlock the door on multiple opens by default, but allow
|
|
* root to do so.
|
|
*/
|
|
if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
|
|
return -EBUSY;
|
|
return cdi->ops->lock_door(cdi, arg);
|
|
}
|
|
|
|
static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
|
|
unsigned long arg)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis");
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
debug = arg ? 1 : 0;
|
|
return debug;
|
|
}
|
|
|
|
static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
|
|
return (cdi->ops->capability & ~cdi->mask);
|
|
}
|
|
|
|
/*
|
|
* The following function is implemented, although very few audio
|
|
* discs give Universal Product Code information, which should just be
|
|
* the Medium Catalog Number on the box. Note, that the way the code
|
|
* is written on the CD is /not/ uniform across all discs!
|
|
*/
|
|
static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
|
|
void __user *argp)
|
|
{
|
|
struct cdrom_mcn mcn;
|
|
int ret;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
|
|
|
|
if (!(cdi->ops->capability & CDC_MCN))
|
|
return -ENOSYS;
|
|
ret = cdi->ops->get_mcn(cdi, &mcn);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (copy_to_user(argp, &mcn, sizeof(mcn)))
|
|
return -EFAULT;
|
|
cd_dbg(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
|
|
unsigned long arg)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
|
|
|
|
if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
|
|
return -ENOSYS;
|
|
if (!CDROM_CAN(CDC_SELECT_DISC) ||
|
|
(arg == CDSL_CURRENT || arg == CDSL_NONE))
|
|
return cdi->ops->drive_status(cdi, CDSL_CURRENT);
|
|
if (((int)arg >= cdi->capacity))
|
|
return -EINVAL;
|
|
return cdrom_slot_status(cdi, arg);
|
|
}
|
|
|
|
/*
|
|
* Ok, this is where problems start. The current interface for the
|
|
* CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
|
|
* CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this
|
|
* is often the case, it is also very common for CDs to have some tracks
|
|
* with data, and some tracks with audio. Just because I feel like it,
|
|
* I declare the following to be the best way to cope. If the CD has ANY
|
|
* data tracks on it, it will be returned as a data CD. If it has any XA
|
|
* tracks, I will return it as that. Now I could simplify this interface
|
|
* by combining these returns with the above, but this more clearly
|
|
* demonstrates the problem with the current interface. Too bad this
|
|
* wasn't designed to use bitmasks... -Erik
|
|
*
|
|
* Well, now we have the option CDS_MIXED: a mixed-type CD.
|
|
* User level programmers might feel the ioctl is not very useful.
|
|
* ---david
|
|
*/
|
|
static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
|
|
{
|
|
tracktype tracks;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
|
|
|
|
cdrom_count_tracks(cdi, &tracks);
|
|
if (tracks.error)
|
|
return tracks.error;
|
|
|
|
/* Policy mode on */
|
|
if (tracks.audio > 0) {
|
|
if (!tracks.data && !tracks.cdi && !tracks.xa)
|
|
return CDS_AUDIO;
|
|
else
|
|
return CDS_MIXED;
|
|
}
|
|
|
|
if (tracks.cdi > 0)
|
|
return CDS_XA_2_2;
|
|
if (tracks.xa > 0)
|
|
return CDS_XA_2_1;
|
|
if (tracks.data > 0)
|
|
return CDS_DATA_1;
|
|
/* Policy mode off */
|
|
|
|
cd_dbg(CD_WARNING, "This disc doesn't have any tracks I recognize!\n");
|
|
return CDS_NO_INFO;
|
|
}
|
|
|
|
static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
|
|
{
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
|
|
return cdi->capacity;
|
|
}
|
|
|
|
static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
|
|
void __user *argp)
|
|
{
|
|
struct cdrom_subchnl q;
|
|
u8 requested, back;
|
|
int ret;
|
|
|
|
/* cd_dbg(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
|
|
|
|
if (copy_from_user(&q, argp, sizeof(q)))
|
|
return -EFAULT;
|
|
|
|
requested = q.cdsc_format;
|
|
if (requested != CDROM_MSF && requested != CDROM_LBA)
|
|
return -EINVAL;
|
|
q.cdsc_format = CDROM_MSF;
|
|
|
|
ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
|
|
if (ret)
|
|
return ret;
|
|
|
|
back = q.cdsc_format; /* local copy */
|
|
sanitize_format(&q.cdsc_absaddr, &back, requested);
|
|
sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
|
|
|
|
if (copy_to_user(argp, &q, sizeof(q)))
|
|
return -EFAULT;
|
|
/* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
|
|
void __user *argp)
|
|
{
|
|
struct cdrom_tochdr header;
|
|
int ret;
|
|
|
|
/* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
|
|
|
|
if (copy_from_user(&header, argp, sizeof(header)))
|
|
return -EFAULT;
|
|
|
|
ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (copy_to_user(argp, &header, sizeof(header)))
|
|
return -EFAULT;
|
|
/* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
|
|
void __user *argp)
|
|
{
|
|
struct cdrom_tocentry entry;
|
|
u8 requested_format;
|
|
int ret;
|
|
|
|
/* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
|
|
|
|
if (copy_from_user(&entry, argp, sizeof(entry)))
|
|
return -EFAULT;
|
|
|
|
requested_format = entry.cdte_format;
|
|
if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
|
|
return -EINVAL;
|
|
/* make interface to low-level uniform */
|
|
entry.cdte_format = CDROM_MSF;
|
|
ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
|
|
if (ret)
|
|
return ret;
|
|
sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
|
|
|
|
if (copy_to_user(argp, &entry, sizeof(entry)))
|
|
return -EFAULT;
|
|
/* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
|
|
void __user *argp)
|
|
{
|
|
struct cdrom_msf msf;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
|
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO))
|
|
return -ENOSYS;
|
|
if (copy_from_user(&msf, argp, sizeof(msf)))
|
|
return -EFAULT;
|
|
return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
|
|
}
|
|
|
|
static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
|
|
void __user *argp)
|
|
{
|
|
struct cdrom_ti ti;
|
|
int ret;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
|
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO))
|
|
return -ENOSYS;
|
|
if (copy_from_user(&ti, argp, sizeof(ti)))
|
|
return -EFAULT;
|
|
|
|
ret = check_for_audio_disc(cdi, cdi->ops);
|
|
if (ret)
|
|
return ret;
|
|
return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
|
|
}
|
|
static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
|
|
void __user *argp)
|
|
{
|
|
struct cdrom_volctrl volume;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
|
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO))
|
|
return -ENOSYS;
|
|
if (copy_from_user(&volume, argp, sizeof(volume)))
|
|
return -EFAULT;
|
|
return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
|
|
}
|
|
|
|
static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
|
|
void __user *argp)
|
|
{
|
|
struct cdrom_volctrl volume;
|
|
int ret;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
|
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO))
|
|
return -ENOSYS;
|
|
|
|
ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (copy_to_user(argp, &volume, sizeof(volume)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
|
|
unsigned int cmd)
|
|
{
|
|
int ret;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
|
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO))
|
|
return -ENOSYS;
|
|
ret = check_for_audio_disc(cdi, cdi->ops);
|
|
if (ret)
|
|
return ret;
|
|
return cdi->ops->audio_ioctl(cdi, cmd, NULL);
|
|
}
|
|
|
|
/*
|
|
* Required when we need to use READ_10 to issue other than 2048 block
|
|
* reads
|
|
*/
|
|
static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
struct packet_command cgc;
|
|
struct modesel_head mh;
|
|
|
|
memset(&mh, 0, sizeof(mh));
|
|
mh.block_desc_length = 0x08;
|
|
mh.block_length_med = (size >> 8) & 0xff;
|
|
mh.block_length_lo = size & 0xff;
|
|
|
|
memset(&cgc, 0, sizeof(cgc));
|
|
cgc.cmd[0] = 0x15;
|
|
cgc.cmd[1] = 1 << 4;
|
|
cgc.cmd[4] = 12;
|
|
cgc.buflen = sizeof(mh);
|
|
cgc.buffer = (char *) &mh;
|
|
cgc.data_direction = CGC_DATA_WRITE;
|
|
mh.block_desc_length = 0x08;
|
|
mh.block_length_med = (size >> 8) & 0xff;
|
|
mh.block_length_lo = size & 0xff;
|
|
|
|
return cdo->generic_packet(cdi, &cgc);
|
|
}
|
|
|
|
static int cdrom_get_track_info(struct cdrom_device_info *cdi,
|
|
__u16 track, __u8 type, track_information *ti)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
struct packet_command cgc;
|
|
int ret, buflen;
|
|
|
|
init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
|
|
cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
|
|
cgc.cmd[1] = type & 3;
|
|
cgc.cmd[4] = (track & 0xff00) >> 8;
|
|
cgc.cmd[5] = track & 0xff;
|
|
cgc.cmd[8] = 8;
|
|
cgc.quiet = 1;
|
|
|
|
ret = cdo->generic_packet(cdi, &cgc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
buflen = be16_to_cpu(ti->track_information_length) +
|
|
sizeof(ti->track_information_length);
|
|
|
|
if (buflen > sizeof(track_information))
|
|
buflen = sizeof(track_information);
|
|
|
|
cgc.cmd[8] = cgc.buflen = buflen;
|
|
ret = cdo->generic_packet(cdi, &cgc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* return actual fill size */
|
|
return buflen;
|
|
}
|
|
|
|
/* return the last written block on the CD-R media. this is for the udf
|
|
file system. */
|
|
int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
|
|
{
|
|
struct cdrom_tocentry toc;
|
|
disc_information di;
|
|
track_information ti;
|
|
__u32 last_track;
|
|
int ret = -1, ti_size;
|
|
|
|
if (!CDROM_CAN(CDC_GENERIC_PACKET))
|
|
goto use_toc;
|
|
|
|
ret = cdrom_get_disc_info(cdi, &di);
|
|
if (ret < (int)(offsetof(typeof(di), last_track_lsb)
|
|
+ sizeof(di.last_track_lsb)))
|
|
goto use_toc;
|
|
|
|
/* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
|
|
last_track = (di.last_track_msb << 8) | di.last_track_lsb;
|
|
ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
|
|
if (ti_size < (int)offsetof(typeof(ti), track_start))
|
|
goto use_toc;
|
|
|
|
/* if this track is blank, try the previous. */
|
|
if (ti.blank) {
|
|
if (last_track == 1)
|
|
goto use_toc;
|
|
last_track--;
|
|
ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
|
|
}
|
|
|
|
if (ti_size < (int)(offsetof(typeof(ti), track_size)
|
|
+ sizeof(ti.track_size)))
|
|
goto use_toc;
|
|
|
|
/* if last recorded field is valid, return it. */
|
|
if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
|
|
+ sizeof(ti.last_rec_address))) {
|
|
*last_written = be32_to_cpu(ti.last_rec_address);
|
|
} else {
|
|
/* make it up instead */
|
|
*last_written = be32_to_cpu(ti.track_start) +
|
|
be32_to_cpu(ti.track_size);
|
|
if (ti.free_blocks)
|
|
*last_written -= (be32_to_cpu(ti.free_blocks) + 7);
|
|
}
|
|
return 0;
|
|
|
|
/* this is where we end up if the drive either can't do a
|
|
GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
|
|
it doesn't give enough information or fails. then we return
|
|
the toc contents. */
|
|
use_toc:
|
|
toc.cdte_format = CDROM_MSF;
|
|
toc.cdte_track = CDROM_LEADOUT;
|
|
if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
|
|
return ret;
|
|
sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
|
|
*last_written = toc.cdte_addr.lba;
|
|
return 0;
|
|
}
|
|
|
|
/* return the next writable block. also for udf file system. */
|
|
static int cdrom_get_next_writable(struct cdrom_device_info *cdi,
|
|
long *next_writable)
|
|
{
|
|
disc_information di;
|
|
track_information ti;
|
|
__u16 last_track;
|
|
int ret, ti_size;
|
|
|
|
if (!CDROM_CAN(CDC_GENERIC_PACKET))
|
|
goto use_last_written;
|
|
|
|
ret = cdrom_get_disc_info(cdi, &di);
|
|
if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
|
|
+ sizeof(di.last_track_lsb))
|
|
goto use_last_written;
|
|
|
|
/* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
|
|
last_track = (di.last_track_msb << 8) | di.last_track_lsb;
|
|
ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
|
|
if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
|
|
goto use_last_written;
|
|
|
|
/* if this track is blank, try the previous. */
|
|
if (ti.blank) {
|
|
if (last_track == 1)
|
|
goto use_last_written;
|
|
last_track--;
|
|
ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
|
|
if (ti_size < 0)
|
|
goto use_last_written;
|
|
}
|
|
|
|
/* if next recordable address field is valid, use it. */
|
|
if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
|
|
+ sizeof(ti.next_writable)) {
|
|
*next_writable = be32_to_cpu(ti.next_writable);
|
|
return 0;
|
|
}
|
|
|
|
use_last_written:
|
|
ret = cdrom_get_last_written(cdi, next_writable);
|
|
if (ret) {
|
|
*next_writable = 0;
|
|
return ret;
|
|
} else {
|
|
*next_writable += 7;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi,
|
|
void __user *arg,
|
|
struct packet_command *cgc,
|
|
int cmd)
|
|
{
|
|
struct request_sense sense;
|
|
struct cdrom_msf msf;
|
|
int blocksize = 0, format = 0, lba;
|
|
int ret;
|
|
|
|
switch (cmd) {
|
|
case CDROMREADRAW:
|
|
blocksize = CD_FRAMESIZE_RAW;
|
|
break;
|
|
case CDROMREADMODE1:
|
|
blocksize = CD_FRAMESIZE;
|
|
format = 2;
|
|
break;
|
|
case CDROMREADMODE2:
|
|
blocksize = CD_FRAMESIZE_RAW0;
|
|
break;
|
|
}
|
|
if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
|
|
return -EFAULT;
|
|
lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0);
|
|
/* FIXME: we need upper bound checking, too!! */
|
|
if (lba < 0)
|
|
return -EINVAL;
|
|
|
|
cgc->buffer = kzalloc(blocksize, GFP_KERNEL);
|
|
if (cgc->buffer == NULL)
|
|
return -ENOMEM;
|
|
|
|
memset(&sense, 0, sizeof(sense));
|
|
cgc->sense = &sense;
|
|
cgc->data_direction = CGC_DATA_READ;
|
|
ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize);
|
|
if (ret && sense.sense_key == 0x05 &&
|
|
sense.asc == 0x20 &&
|
|
sense.ascq == 0x00) {
|
|
/*
|
|
* SCSI-II devices are not required to support
|
|
* READ_CD, so let's try switching block size
|
|
*/
|
|
/* FIXME: switch back again... */
|
|
ret = cdrom_switch_blocksize(cdi, blocksize);
|
|
if (ret)
|
|
goto out;
|
|
cgc->sense = NULL;
|
|
ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1);
|
|
ret |= cdrom_switch_blocksize(cdi, blocksize);
|
|
}
|
|
if (!ret && copy_to_user(arg, cgc->buffer, blocksize))
|
|
ret = -EFAULT;
|
|
out:
|
|
kfree(cgc->buffer);
|
|
return ret;
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi,
|
|
void __user *arg)
|
|
{
|
|
struct cdrom_read_audio ra;
|
|
int lba;
|
|
|
|
if (copy_from_user(&ra, (struct cdrom_read_audio __user *)arg,
|
|
sizeof(ra)))
|
|
return -EFAULT;
|
|
|
|
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;
|
|
|
|
/* FIXME: we need upper bound checking, too!! */
|
|
if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
|
|
return -EINVAL;
|
|
|
|
return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi,
|
|
void __user *arg)
|
|
{
|
|
int ret;
|
|
struct cdrom_subchnl q;
|
|
u_char requested, back;
|
|
if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q)))
|
|
return -EFAULT;
|
|
requested = q.cdsc_format;
|
|
if (!((requested == CDROM_MSF) ||
|
|
(requested == CDROM_LBA)))
|
|
return -EINVAL;
|
|
|
|
ret = cdrom_read_subchannel(cdi, &q, 0);
|
|
if (ret)
|
|
return ret;
|
|
back = q.cdsc_format; /* local copy */
|
|
sanitize_format(&q.cdsc_absaddr, &back, requested);
|
|
sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
|
|
if (copy_to_user((struct cdrom_subchnl __user *)arg, &q, sizeof(q)))
|
|
return -EFAULT;
|
|
/* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
|
|
return 0;
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi,
|
|
void __user *arg,
|
|
struct packet_command *cgc)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
struct cdrom_msf msf;
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
|
|
if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
|
|
return -EFAULT;
|
|
cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF;
|
|
cgc->cmd[3] = msf.cdmsf_min0;
|
|
cgc->cmd[4] = msf.cdmsf_sec0;
|
|
cgc->cmd[5] = msf.cdmsf_frame0;
|
|
cgc->cmd[6] = msf.cdmsf_min1;
|
|
cgc->cmd[7] = msf.cdmsf_sec1;
|
|
cgc->cmd[8] = msf.cdmsf_frame1;
|
|
cgc->data_direction = CGC_DATA_NONE;
|
|
return cdo->generic_packet(cdi, cgc);
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi,
|
|
void __user *arg,
|
|
struct packet_command *cgc)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
struct cdrom_blk blk;
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
|
|
if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk)))
|
|
return -EFAULT;
|
|
cgc->cmd[0] = GPCMD_PLAY_AUDIO_10;
|
|
cgc->cmd[2] = (blk.from >> 24) & 0xff;
|
|
cgc->cmd[3] = (blk.from >> 16) & 0xff;
|
|
cgc->cmd[4] = (blk.from >> 8) & 0xff;
|
|
cgc->cmd[5] = blk.from & 0xff;
|
|
cgc->cmd[7] = (blk.len >> 8) & 0xff;
|
|
cgc->cmd[8] = blk.len & 0xff;
|
|
cgc->data_direction = CGC_DATA_NONE;
|
|
return cdo->generic_packet(cdi, cgc);
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi,
|
|
void __user *arg,
|
|
struct packet_command *cgc,
|
|
unsigned int cmd)
|
|
{
|
|
struct cdrom_volctrl volctrl;
|
|
unsigned char buffer[32];
|
|
char mask[sizeof(buffer)];
|
|
unsigned short offset;
|
|
int ret;
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n");
|
|
|
|
if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg,
|
|
sizeof(volctrl)))
|
|
return -EFAULT;
|
|
|
|
cgc->buffer = buffer;
|
|
cgc->buflen = 24;
|
|
ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* originally the code depended on buffer[1] to determine
|
|
how much data is available for transfer. buffer[1] is
|
|
unfortunately ambigious and the only reliable way seem
|
|
to be to simply skip over the block descriptor... */
|
|
offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6));
|
|
|
|
if (offset + 16 > sizeof(buffer))
|
|
return -E2BIG;
|
|
|
|
if (offset + 16 > cgc->buflen) {
|
|
cgc->buflen = offset + 16;
|
|
ret = cdrom_mode_sense(cdi, cgc,
|
|
GPMODE_AUDIO_CTL_PAGE, 0);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
/* sanity check */
|
|
if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
|
|
buffer[offset + 1] < 14)
|
|
return -EINVAL;
|
|
|
|
/* now we have the current volume settings. if it was only
|
|
a CDROMVOLREAD, return these values */
|
|
if (cmd == CDROMVOLREAD) {
|
|
volctrl.channel0 = buffer[offset+9];
|
|
volctrl.channel1 = buffer[offset+11];
|
|
volctrl.channel2 = buffer[offset+13];
|
|
volctrl.channel3 = buffer[offset+15];
|
|
if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl,
|
|
sizeof(volctrl)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
/* get the volume mask */
|
|
cgc->buffer = mask;
|
|
ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
buffer[offset + 9] = volctrl.channel0 & mask[offset + 9];
|
|
buffer[offset + 11] = volctrl.channel1 & mask[offset + 11];
|
|
buffer[offset + 13] = volctrl.channel2 & mask[offset + 13];
|
|
buffer[offset + 15] = volctrl.channel3 & mask[offset + 15];
|
|
|
|
/* set volume */
|
|
cgc->buffer = buffer + offset - 8;
|
|
memset(cgc->buffer, 0, 8);
|
|
return cdrom_mode_select(cdi, cgc);
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi,
|
|
struct packet_command *cgc,
|
|
int cmd)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
|
|
cgc->cmd[0] = GPCMD_START_STOP_UNIT;
|
|
cgc->cmd[1] = 1;
|
|
cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
|
|
cgc->data_direction = CGC_DATA_NONE;
|
|
return cdo->generic_packet(cdi, cgc);
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi,
|
|
struct packet_command *cgc,
|
|
int cmd)
|
|
{
|
|
const struct cdrom_device_ops *cdo = cdi->ops;
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
|
|
cgc->cmd[0] = GPCMD_PAUSE_RESUME;
|
|
cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
|
|
cgc->data_direction = CGC_DATA_NONE;
|
|
return cdo->generic_packet(cdi, cgc);
|
|
}
|
|
|
|
static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi,
|
|
void __user *arg,
|
|
struct packet_command *cgc)
|
|
{
|
|
int ret;
|
|
dvd_struct *s;
|
|
int size = sizeof(dvd_struct);
|
|
|
|
if (!CDROM_CAN(CDC_DVD))
|
|
return -ENOSYS;
|
|
|
|
s = memdup_user(arg, size);
|
|
if (IS_ERR(s))
|
|
return PTR_ERR(s);
|
|
|
|
cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
|
|
|
|
ret = dvd_read_struct(cdi, s, cgc);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (copy_to_user(arg, s, size))
|
|
ret = -EFAULT;
|
|
out:
|
|
kfree(s);
|
|
return ret;
|
|
}
|
|
|
|
static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi,
|
|
void __user *arg)
|
|
{
|
|
int ret;
|
|
dvd_authinfo ai;
|
|
if (!CDROM_CAN(CDC_DVD))
|
|
return -ENOSYS;
|
|
cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n");
|
|
if (copy_from_user(&ai, (dvd_authinfo __user *)arg, sizeof(ai)))
|
|
return -EFAULT;
|
|
ret = dvd_do_auth(cdi, &ai);
|
|
if (ret)
|
|
return ret;
|
|
if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi,
|
|
void __user *arg)
|
|
{
|
|
int ret;
|
|
long next = 0;
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
|
|
ret = cdrom_get_next_writable(cdi, &next);
|
|
if (ret)
|
|
return ret;
|
|
if (copy_to_user((long __user *)arg, &next, sizeof(next)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi,
|
|
void __user *arg)
|
|
{
|
|
int ret;
|
|
long last = 0;
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
|
|
ret = cdrom_get_last_written(cdi, &last);
|
|
if (ret)
|
|
return ret;
|
|
if (copy_to_user((long __user *)arg, &last, sizeof(last)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct packet_command cgc;
|
|
void __user *userptr = (void __user *)arg;
|
|
|
|
memset(&cgc, 0, sizeof(cgc));
|
|
|
|
/* build a unified command and queue it through
|
|
cdo->generic_packet() */
|
|
switch (cmd) {
|
|
case CDROMREADRAW:
|
|
case CDROMREADMODE1:
|
|
case CDROMREADMODE2:
|
|
return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd);
|
|
case CDROMREADAUDIO:
|
|
return mmc_ioctl_cdrom_read_audio(cdi, userptr);
|
|
case CDROMSUBCHNL:
|
|
return mmc_ioctl_cdrom_subchannel(cdi, userptr);
|
|
case CDROMPLAYMSF:
|
|
return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc);
|
|
case CDROMPLAYBLK:
|
|
return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc);
|
|
case CDROMVOLCTRL:
|
|
case CDROMVOLREAD:
|
|
return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd);
|
|
case CDROMSTART:
|
|
case CDROMSTOP:
|
|
return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd);
|
|
case CDROMPAUSE:
|
|
case CDROMRESUME:
|
|
return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd);
|
|
case DVD_READ_STRUCT:
|
|
return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc);
|
|
case DVD_AUTH:
|
|
return mmc_ioctl_dvd_auth(cdi, userptr);
|
|
case CDROM_NEXT_WRITABLE:
|
|
return mmc_ioctl_cdrom_next_writable(cdi, userptr);
|
|
case CDROM_LAST_WRITTEN:
|
|
return mmc_ioctl_cdrom_last_written(cdi, userptr);
|
|
}
|
|
|
|
return -ENOTTY;
|
|
}
|
|
|
|
/*
|
|
* Just about every imaginable ioctl is supported in the Uniform layer
|
|
* these days.
|
|
* ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
|
|
*/
|
|
int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
|
|
fmode_t mode, unsigned int cmd, unsigned long arg)
|
|
{
|
|
void __user *argp = (void __user *)arg;
|
|
int ret;
|
|
|
|
/*
|
|
* Try the generic SCSI command ioctl's first.
|
|
*/
|
|
ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
|
|
if (ret != -ENOTTY)
|
|
return ret;
|
|
|
|
switch (cmd) {
|
|
case CDROMMULTISESSION:
|
|
return cdrom_ioctl_multisession(cdi, argp);
|
|
case CDROMEJECT:
|
|
return cdrom_ioctl_eject(cdi);
|
|
case CDROMCLOSETRAY:
|
|
return cdrom_ioctl_closetray(cdi);
|
|
case CDROMEJECT_SW:
|
|
return cdrom_ioctl_eject_sw(cdi, arg);
|
|
case CDROM_MEDIA_CHANGED:
|
|
return cdrom_ioctl_media_changed(cdi, arg);
|
|
case CDROM_SET_OPTIONS:
|
|
return cdrom_ioctl_set_options(cdi, arg);
|
|
case CDROM_CLEAR_OPTIONS:
|
|
return cdrom_ioctl_clear_options(cdi, arg);
|
|
case CDROM_SELECT_SPEED:
|
|
return cdrom_ioctl_select_speed(cdi, arg);
|
|
case CDROM_SELECT_DISC:
|
|
return cdrom_ioctl_select_disc(cdi, arg);
|
|
case CDROMRESET:
|
|
return cdrom_ioctl_reset(cdi, bdev);
|
|
case CDROM_LOCKDOOR:
|
|
return cdrom_ioctl_lock_door(cdi, arg);
|
|
case CDROM_DEBUG:
|
|
return cdrom_ioctl_debug(cdi, arg);
|
|
case CDROM_GET_CAPABILITY:
|
|
return cdrom_ioctl_get_capability(cdi);
|
|
case CDROM_GET_MCN:
|
|
return cdrom_ioctl_get_mcn(cdi, argp);
|
|
case CDROM_DRIVE_STATUS:
|
|
return cdrom_ioctl_drive_status(cdi, arg);
|
|
case CDROM_DISC_STATUS:
|
|
return cdrom_ioctl_disc_status(cdi);
|
|
case CDROM_CHANGER_NSLOTS:
|
|
return cdrom_ioctl_changer_nslots(cdi);
|
|
}
|
|
|
|
/*
|
|
* Use the ioctls that are implemented through the generic_packet()
|
|
* interface. this may look at bit funny, but if -ENOTTY is
|
|
* returned that particular ioctl is not implemented and we
|
|
* let it go through the device specific ones.
|
|
*/
|
|
if (CDROM_CAN(CDC_GENERIC_PACKET)) {
|
|
ret = mmc_ioctl(cdi, cmd, arg);
|
|
if (ret != -ENOTTY)
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Note: most of the cd_dbg() calls are commented out here,
|
|
* because they fill up the sys log when CD players poll
|
|
* the drive.
|
|
*/
|
|
switch (cmd) {
|
|
case CDROMSUBCHNL:
|
|
return cdrom_ioctl_get_subchnl(cdi, argp);
|
|
case CDROMREADTOCHDR:
|
|
return cdrom_ioctl_read_tochdr(cdi, argp);
|
|
case CDROMREADTOCENTRY:
|
|
return cdrom_ioctl_read_tocentry(cdi, argp);
|
|
case CDROMPLAYMSF:
|
|
return cdrom_ioctl_play_msf(cdi, argp);
|
|
case CDROMPLAYTRKIND:
|
|
return cdrom_ioctl_play_trkind(cdi, argp);
|
|
case CDROMVOLCTRL:
|
|
return cdrom_ioctl_volctrl(cdi, argp);
|
|
case CDROMVOLREAD:
|
|
return cdrom_ioctl_volread(cdi, argp);
|
|
case CDROMSTART:
|
|
case CDROMSTOP:
|
|
case CDROMPAUSE:
|
|
case CDROMRESUME:
|
|
return cdrom_ioctl_audioctl(cdi, cmd);
|
|
}
|
|
|
|
return -ENOSYS;
|
|
}
|
|
|
|
EXPORT_SYMBOL(cdrom_get_last_written);
|
|
EXPORT_SYMBOL(register_cdrom);
|
|
EXPORT_SYMBOL(unregister_cdrom);
|
|
EXPORT_SYMBOL(cdrom_open);
|
|
EXPORT_SYMBOL(cdrom_release);
|
|
EXPORT_SYMBOL(cdrom_ioctl);
|
|
EXPORT_SYMBOL(cdrom_media_changed);
|
|
EXPORT_SYMBOL(cdrom_number_of_slots);
|
|
EXPORT_SYMBOL(cdrom_mode_select);
|
|
EXPORT_SYMBOL(cdrom_mode_sense);
|
|
EXPORT_SYMBOL(init_cdrom_command);
|
|
EXPORT_SYMBOL(cdrom_get_media_event);
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
|
|
#define CDROM_STR_SIZE 1000
|
|
|
|
static struct cdrom_sysctl_settings {
|
|
char info[CDROM_STR_SIZE]; /* general info */
|
|
int autoclose; /* close tray upon mount, etc */
|
|
int autoeject; /* eject on umount */
|
|
int debug; /* turn on debugging messages */
|
|
int lock; /* lock the door on device open */
|
|
int check; /* check media type */
|
|
} cdrom_sysctl_settings;
|
|
|
|
enum cdrom_print_option {
|
|
CTL_NAME,
|
|
CTL_SPEED,
|
|
CTL_SLOTS,
|
|
CTL_CAPABILITY
|
|
};
|
|
|
|
static int cdrom_print_info(const char *header, int val, char *info,
|
|
int *pos, enum cdrom_print_option option)
|
|
{
|
|
const int max_size = sizeof(cdrom_sysctl_settings.info);
|
|
struct cdrom_device_info *cdi;
|
|
int ret;
|
|
|
|
ret = scnprintf(info + *pos, max_size - *pos, header);
|
|
if (!ret)
|
|
return 1;
|
|
|
|
*pos += ret;
|
|
|
|
list_for_each_entry(cdi, &cdrom_list, list) {
|
|
switch (option) {
|
|
case CTL_NAME:
|
|
ret = scnprintf(info + *pos, max_size - *pos,
|
|
"\t%s", cdi->name);
|
|
break;
|
|
case CTL_SPEED:
|
|
ret = scnprintf(info + *pos, max_size - *pos,
|
|
"\t%d", cdi->speed);
|
|
break;
|
|
case CTL_SLOTS:
|
|
ret = scnprintf(info + *pos, max_size - *pos,
|
|
"\t%d", cdi->capacity);
|
|
break;
|
|
case CTL_CAPABILITY:
|
|
ret = scnprintf(info + *pos, max_size - *pos,
|
|
"\t%d", CDROM_CAN(val) != 0);
|
|
break;
|
|
default:
|
|
pr_info("invalid option%d\n", option);
|
|
return 1;
|
|
}
|
|
if (!ret)
|
|
return 1;
|
|
*pos += ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cdrom_sysctl_info(struct ctl_table *ctl, int write,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
int pos;
|
|
char *info = cdrom_sysctl_settings.info;
|
|
const int max_size = sizeof(cdrom_sysctl_settings.info);
|
|
|
|
if (!*lenp || (*ppos && !write)) {
|
|
*lenp = 0;
|
|
return 0;
|
|
}
|
|
|
|
mutex_lock(&cdrom_mutex);
|
|
|
|
pos = sprintf(info, "CD-ROM information, " VERSION "\n");
|
|
|
|
if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
|
|
goto done;
|
|
if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
|
|
goto done;
|
|
if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan close tray:\t",
|
|
CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan open tray:\t",
|
|
CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan lock tray:\t",
|
|
CDC_LOCK, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan change speed:",
|
|
CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan select disk:",
|
|
CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan read multisession:",
|
|
CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan read MCN:\t",
|
|
CDC_MCN, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nReports media changed:",
|
|
CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan play audio:\t",
|
|
CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan write CD-R:\t",
|
|
CDC_CD_R, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan write CD-RW:",
|
|
CDC_CD_RW, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan read DVD:\t",
|
|
CDC_DVD, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan write DVD-R:",
|
|
CDC_DVD_R, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan write DVD-RAM:",
|
|
CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan read MRW:\t",
|
|
CDC_MRW, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan write MRW:\t",
|
|
CDC_MRW_W, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (cdrom_print_info("\nCan write RAM:\t",
|
|
CDC_RAM, info, &pos, CTL_CAPABILITY))
|
|
goto done;
|
|
if (!scnprintf(info + pos, max_size - pos, "\n\n"))
|
|
goto done;
|
|
doit:
|
|
mutex_unlock(&cdrom_mutex);
|
|
return proc_dostring(ctl, write, buffer, lenp, ppos);
|
|
done:
|
|
pr_info("info buffer too small\n");
|
|
goto doit;
|
|
}
|
|
|
|
/* Unfortunately, per device settings are not implemented through
|
|
procfs/sysctl yet. When they are, this will naturally disappear. For now
|
|
just update all drives. Later this will become the template on which
|
|
new registered drives will be based. */
|
|
static void cdrom_update_settings(void)
|
|
{
|
|
struct cdrom_device_info *cdi;
|
|
|
|
mutex_lock(&cdrom_mutex);
|
|
list_for_each_entry(cdi, &cdrom_list, list) {
|
|
if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
|
|
cdi->options |= CDO_AUTO_CLOSE;
|
|
else if (!autoclose)
|
|
cdi->options &= ~CDO_AUTO_CLOSE;
|
|
if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
|
|
cdi->options |= CDO_AUTO_EJECT;
|
|
else if (!autoeject)
|
|
cdi->options &= ~CDO_AUTO_EJECT;
|
|
if (lockdoor && CDROM_CAN(CDC_LOCK))
|
|
cdi->options |= CDO_LOCK;
|
|
else if (!lockdoor)
|
|
cdi->options &= ~CDO_LOCK;
|
|
if (check_media_type)
|
|
cdi->options |= CDO_CHECK_TYPE;
|
|
else
|
|
cdi->options &= ~CDO_CHECK_TYPE;
|
|
}
|
|
mutex_unlock(&cdrom_mutex);
|
|
}
|
|
|
|
static int cdrom_sysctl_handler(struct ctl_table *ctl, int write,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
int ret;
|
|
|
|
ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
|
|
|
|
if (write) {
|
|
|
|
/* we only care for 1 or 0. */
|
|
autoclose = !!cdrom_sysctl_settings.autoclose;
|
|
autoeject = !!cdrom_sysctl_settings.autoeject;
|
|
debug = !!cdrom_sysctl_settings.debug;
|
|
lockdoor = !!cdrom_sysctl_settings.lock;
|
|
check_media_type = !!cdrom_sysctl_settings.check;
|
|
|
|
/* update the option flags according to the changes. we
|
|
don't have per device options through sysctl yet,
|
|
but we will have and then this will disappear. */
|
|
cdrom_update_settings();
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Place files in /proc/sys/dev/cdrom */
|
|
static struct ctl_table cdrom_table[] = {
|
|
{
|
|
.procname = "info",
|
|
.data = &cdrom_sysctl_settings.info,
|
|
.maxlen = CDROM_STR_SIZE,
|
|
.mode = 0444,
|
|
.proc_handler = cdrom_sysctl_info,
|
|
},
|
|
{
|
|
.procname = "autoclose",
|
|
.data = &cdrom_sysctl_settings.autoclose,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = cdrom_sysctl_handler,
|
|
},
|
|
{
|
|
.procname = "autoeject",
|
|
.data = &cdrom_sysctl_settings.autoeject,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = cdrom_sysctl_handler,
|
|
},
|
|
{
|
|
.procname = "debug",
|
|
.data = &cdrom_sysctl_settings.debug,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = cdrom_sysctl_handler,
|
|
},
|
|
{
|
|
.procname = "lock",
|
|
.data = &cdrom_sysctl_settings.lock,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = cdrom_sysctl_handler,
|
|
},
|
|
{
|
|
.procname = "check_media",
|
|
.data = &cdrom_sysctl_settings.check,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = cdrom_sysctl_handler
|
|
},
|
|
{ }
|
|
};
|
|
|
|
static struct ctl_table cdrom_cdrom_table[] = {
|
|
{
|
|
.procname = "cdrom",
|
|
.maxlen = 0,
|
|
.mode = 0555,
|
|
.child = cdrom_table,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
/* Make sure that /proc/sys/dev is there */
|
|
static struct ctl_table cdrom_root_table[] = {
|
|
{
|
|
.procname = "dev",
|
|
.maxlen = 0,
|
|
.mode = 0555,
|
|
.child = cdrom_cdrom_table,
|
|
},
|
|
{ }
|
|
};
|
|
static struct ctl_table_header *cdrom_sysctl_header;
|
|
|
|
static void cdrom_sysctl_register(void)
|
|
{
|
|
static int initialized;
|
|
|
|
if (initialized == 1)
|
|
return;
|
|
|
|
cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
|
|
|
|
/* set the defaults */
|
|
cdrom_sysctl_settings.autoclose = autoclose;
|
|
cdrom_sysctl_settings.autoeject = autoeject;
|
|
cdrom_sysctl_settings.debug = debug;
|
|
cdrom_sysctl_settings.lock = lockdoor;
|
|
cdrom_sysctl_settings.check = check_media_type;
|
|
|
|
initialized = 1;
|
|
}
|
|
|
|
static void cdrom_sysctl_unregister(void)
|
|
{
|
|
if (cdrom_sysctl_header)
|
|
unregister_sysctl_table(cdrom_sysctl_header);
|
|
}
|
|
|
|
#else /* CONFIG_SYSCTL */
|
|
|
|
static void cdrom_sysctl_register(void)
|
|
{
|
|
}
|
|
|
|
static void cdrom_sysctl_unregister(void)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_SYSCTL */
|
|
|
|
static int __init cdrom_init(void)
|
|
{
|
|
cdrom_sysctl_register();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit cdrom_exit(void)
|
|
{
|
|
pr_info("Uniform CD-ROM driver unloaded\n");
|
|
cdrom_sysctl_unregister();
|
|
}
|
|
|
|
module_init(cdrom_init);
|
|
module_exit(cdrom_exit);
|
|
MODULE_LICENSE("GPL");
|