| /* 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(CD_FRAMESIZE_RAW * nr, 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, GFP_KERNEL); |
| 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 (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 (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; |