Uwe Zeisberger | f30c226 | 2006-10-03 23:01:26 +0200 | [diff] [blame] | 1 | /* linux/drivers/cdrom/cdrom.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | Copyright (c) 1996, 1997 David A. van Leeuwen. |
| 3 | Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org> |
| 4 | Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk> |
| 5 | |
| 6 | May be copied or modified under the terms of the GNU General Public |
| 7 | License. See linux/COPYING for more information. |
| 8 | |
| 9 | Uniform CD-ROM driver for Linux. |
| 10 | See Documentation/cdrom/cdrom-standard.tex for usage information. |
| 11 | |
| 12 | The routines in the file provide a uniform interface between the |
| 13 | software that uses CD-ROMs and the various low-level drivers that |
| 14 | actually talk to the hardware. Suggestions are welcome. |
| 15 | Patches that work are more welcome though. ;-) |
| 16 | |
| 17 | To Do List: |
| 18 | ---------------------------------- |
| 19 | |
| 20 | -- Modify sysctl/proc interface. I plan on having one directory per |
| 21 | drive, with entries for outputing general drive information, and sysctl |
| 22 | based tunable parameters such as whether the tray should auto-close for |
| 23 | that drive. Suggestions (or patches) for this welcome! |
| 24 | |
| 25 | |
| 26 | Revision History |
| 27 | ---------------------------------- |
| 28 | 1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl> |
| 29 | -- Initial version by David A. van Leeuwen. I don't have a detailed |
| 30 | changelog for the 1.x series, David? |
| 31 | |
| 32 | 2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org> |
| 33 | -- New maintainer! As David A. van Leeuwen has been too busy to activly |
| 34 | maintain and improve this driver, I am now carrying on the torch. If |
| 35 | you have a problem with this driver, please feel free to contact me. |
| 36 | |
| 37 | -- Added (rudimentary) sysctl interface. I realize this is really weak |
| 38 | right now, and is _very_ badly implemented. It will be improved... |
| 39 | |
| 40 | -- Modified CDROM_DISC_STATUS so that it is now incorporated into |
| 41 | the Uniform CD-ROM driver via the cdrom_count_tracks function. |
| 42 | The cdrom_count_tracks function helps resolve some of the false |
| 43 | assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check |
| 44 | for the correct media type when mounting or playing audio from a CD. |
| 45 | |
| 46 | -- Remove the calls to verify_area and only use the copy_from_user and |
| 47 | copy_to_user stuff, since these calls now provide their own memory |
| 48 | checking with the 2.1.x kernels. |
| 49 | |
| 50 | -- Major update to return codes so that errors from low-level drivers |
| 51 | are passed on through (thanks to Gerd Knorr for pointing out this |
| 52 | problem). |
| 53 | |
| 54 | -- Made it so if a function isn't implemented in a low-level driver, |
| 55 | ENOSYS is now returned instead of EINVAL. |
| 56 | |
| 57 | -- Simplified some complex logic so that the source code is easier to read. |
| 58 | |
| 59 | -- Other stuff I probably forgot to mention (lots of changes). |
| 60 | |
| 61 | 2.01 to 2.11 Dec 1997-Jan 1998 |
| 62 | -- TO-DO! Write changelogs for 2.01 to 2.12. |
| 63 | |
| 64 | 2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org> |
| 65 | -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that |
| 66 | copy_*_user does not return EFAULT on error, but instead returns the number |
| 67 | of bytes not copied. I was returning whatever non-zero stuff came back from |
| 68 | the copy_*_user functions directly, which would result in strange errors. |
| 69 | |
| 70 | 2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org> |
| 71 | -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed |
| 72 | of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing |
| 73 | this out and providing a simple fix. |
| 74 | -- Fixed the procfs-unload-module bug with the fill_inode procfs callback. |
| 75 | thanks to Andrea Arcangeli |
| 76 | -- Fixed it so that the /proc entry now also shows up when cdrom is |
| 77 | compiled into the kernel. Before it only worked when loaded as a module. |
| 78 | |
| 79 | 2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org> |
| 80 | -- Fixed a bug in cdrom_media_changed and handling of reporting that |
| 81 | the media had changed for devices that _don't_ implement media_changed. |
| 82 | Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug. |
| 83 | -- Made a few things more pedanticly correct. |
| 84 | |
| 85 | 2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk> |
| 86 | -- New maintainers! Erik was too busy to continue the work on the driver, |
| 87 | so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk> |
| 88 | will do their best to follow in his footsteps |
| 89 | |
| 90 | 2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk> |
| 91 | -- Check if drive is capable of doing what we ask before blindly changing |
| 92 | cdi->options in various ioctl. |
| 93 | -- Added version to proc entry. |
| 94 | |
| 95 | 2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk> |
| 96 | -- Fixed an error in open_for_data where we would sometimes not return |
| 97 | the correct error value. Thanks Huba Gaspar <huba@softcell.hu>. |
| 98 | -- Fixed module usage count - usage was based on /proc/sys/dev |
| 99 | instead of /proc/sys/dev/cdrom. This could lead to an oops when other |
| 100 | modules had entries in dev. Feb 02 - real bug was in sysctl.c where |
| 101 | dev would be removed even though it was used. cdrom.c just illuminated |
| 102 | that bug. |
| 103 | |
| 104 | 2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk> |
| 105 | -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has |
| 106 | been "rewritten" because capabilities and options aren't in sync. They |
| 107 | should be... |
| 108 | -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way. |
| 109 | -- Added CDROM_RESET ioctl. |
| 110 | -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly. |
| 111 | -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs |
| 112 | from parsing /proc/sys/dev/cdrom/info. |
| 113 | |
| 114 | 2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk> |
| 115 | -- Check capability mask from low level driver when counting tracks as |
| 116 | per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>. |
| 117 | |
| 118 | 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk> |
| 119 | -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of |
| 120 | CDC_CLOSE_TRAY. |
| 121 | -- proc info didn't mask against capabilities mask. |
| 122 | |
| 123 | 3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk> |
| 124 | -- Unified audio ioctl handling across CD-ROM drivers. A lot of the |
| 125 | code was duplicated before. Drives that support the generic packet |
| 126 | interface are now being fed packets from here instead. |
| 127 | -- First attempt at adding support for MMC2 commands - for DVD and |
| 128 | CD-R(W) drives. Only the DVD parts are in now - the interface used is |
| 129 | the same as for the audio ioctls. |
| 130 | -- ioctl cleanups. if a drive couldn't play audio, it didn't get |
| 131 | a change to perform device specific ioctls as well. |
| 132 | -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities. |
| 133 | -- Put in sysctl files for autoclose, autoeject, check_media, debug, |
| 134 | and lock. |
| 135 | -- /proc/sys/dev/cdrom/info has been updated to also contain info about |
| 136 | CD-Rx and DVD capabilities. |
| 137 | -- Now default to checking media type. |
| 138 | -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for |
| 139 | doing this anyway, with the generic_packet addition. |
| 140 | |
| 141 | 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk> |
| 142 | -- Fix up the sysctl handling so that the option flags get set |
| 143 | correctly. |
| 144 | -- Fix up ioctl handling so the device specific ones actually get |
| 145 | called :). |
| 146 | |
| 147 | 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk> |
| 148 | -- Fixed volume control on SCSI drives (or others with longer audio |
| 149 | page). |
| 150 | -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath |
| 151 | <andrewtv@usa.net> for telling me and for having defined the various |
| 152 | DVD structures and ioctls in the first place! He designed the original |
| 153 | DVD patches for ide-cd and while I rearranged and unified them, the |
| 154 | interface is still the same. |
| 155 | |
| 156 | 3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk> |
| 157 | -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only |
| 158 | CDROMREADTOCENTRY and CDROMREADTOCHDR are left. |
| 159 | -- Moved the CDROMREADxxx ioctls in here. |
| 160 | -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls |
| 161 | and exported functions. |
| 162 | -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands |
| 163 | to now read GPCMD_ for the new generic packet interface. All low level |
| 164 | drivers are updated as well. |
| 165 | -- Various other cleanups. |
| 166 | |
| 167 | 3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk> |
| 168 | -- Fixed a couple of possible memory leaks (if an operation failed and |
| 169 | we didn't free the buffer before returning the error). |
| 170 | -- Integrated Uniform CD Changer handling from Richard Sharman |
| 171 | <rsharman@pobox.com>. |
| 172 | -- Defined CD_DVD and CD_CHANGER log levels. |
| 173 | -- Fixed the CDROMREADxxx ioctls. |
| 174 | -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few |
| 175 | drives supported it. We lose the index part, however. |
| 176 | -- Small modifications to accommodate opens of /dev/hdc1, required |
| 177 | for ide-cd to handle multisession discs. |
| 178 | -- Export cdrom_mode_sense and cdrom_mode_select. |
| 179 | -- init_cdrom_command() for setting up a cgc command. |
| 180 | |
| 181 | 3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk> |
| 182 | -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually |
| 183 | impossible to send the drive data in a sensible way. |
| 184 | -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and |
| 185 | dvd_read_manufact. |
| 186 | -- Added setup of write mode for packet writing. |
| 187 | -- Fixed CDDA ripping with cdda2wav - accept much larger requests of |
| 188 | number of frames and split the reads in blocks of 8. |
| 189 | |
| 190 | 3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk> |
| 191 | -- Added support for changing the region of DVD drives. |
| 192 | -- Added sense data to generic command. |
| 193 | |
| 194 | 3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de> |
| 195 | -- Do same "read header length" trick in cdrom_get_disc_info() as |
| 196 | we do in cdrom_get_track_info() -- some drive don't obey specs and |
| 197 | fail if they can't supply the full Mt Fuji size table. |
| 198 | -- Deleted stuff related to setting up write modes. It has a different |
| 199 | home now. |
| 200 | -- Clear header length in mode_select unconditionally. |
| 201 | -- Removed the register_disk() that was added, not needed here. |
| 202 | |
| 203 | 3.08 May 1, 2000 - Jens Axboe <axboe@suse.de> |
| 204 | -- Fix direction flag in setup_send_key and setup_report_key. This |
| 205 | gave some SCSI adapters problems. |
| 206 | -- Always return -EROFS for write opens |
| 207 | -- Convert to module_init/module_exit style init and remove some |
| 208 | of the #ifdef MODULE stuff |
| 209 | -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid, |
| 210 | DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and |
| 211 | dvd_do_auth passed uninitialized data to drive because init_cdrom_command |
| 212 | did not clear a 0 sized buffer. |
| 213 | |
| 214 | 3.09 May 12, 2000 - Jens Axboe <axboe@suse.de> |
| 215 | -- Fix Video-CD on SCSI drives that don't support READ_CD command. In |
| 216 | that case switch block size and issue plain READ_10 again, then switch |
| 217 | back. |
| 218 | |
| 219 | 3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de> |
| 220 | -- Fix volume control on CD's - old SCSI-II drives now use their own |
| 221 | code, as doing MODE6 stuff in here is really not my intention. |
| 222 | -- Use READ_DISC_INFO for more reliable end-of-disc. |
| 223 | |
| 224 | 3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de> |
| 225 | -- Fix bug in getting rpc phase 2 region info. |
| 226 | -- Reinstate "correct" CDROMPLAYTRKIND |
| 227 | |
| 228 | 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de> |
| 229 | -- Use quiet bit on packet commands not known to work |
| 230 | |
| 231 | 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de> |
| 232 | -- Various fixes and lots of cleanups not listed :-) |
| 233 | -- Locking fixes |
| 234 | -- Mt Rainier support |
| 235 | -- DVD-RAM write open fixes |
| 236 | |
| 237 | Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov |
| 238 | <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units. |
| 239 | |
| 240 | Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW |
| 241 | 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se> |
| 242 | |
| 243 | -------------------------------------------------------------------------*/ |
| 244 | |
| 245 | #define REVISION "Revision: 3.20" |
| 246 | #define VERSION "Id: cdrom.c 3.20 2003/12/17" |
| 247 | |
| 248 | /* I use an error-log mask to give fine grain control over the type of |
| 249 | messages dumped to the system logs. The available masks include: */ |
| 250 | #define CD_NOTHING 0x0 |
| 251 | #define CD_WARNING 0x1 |
| 252 | #define CD_REG_UNREG 0x2 |
| 253 | #define CD_DO_IOCTL 0x4 |
| 254 | #define CD_OPEN 0x8 |
| 255 | #define CD_CLOSE 0x10 |
| 256 | #define CD_COUNT_TRACKS 0x20 |
| 257 | #define CD_CHANGER 0x40 |
| 258 | #define CD_DVD 0x80 |
| 259 | |
| 260 | /* Define this to remove _all_ the debugging messages */ |
| 261 | /* #define ERRLOGMASK CD_NOTHING */ |
| 262 | #define ERRLOGMASK CD_WARNING |
| 263 | /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */ |
| 264 | /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */ |
| 265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | #include <linux/module.h> |
| 267 | #include <linux/fs.h> |
| 268 | #include <linux/buffer_head.h> |
| 269 | #include <linux/major.h> |
| 270 | #include <linux/types.h> |
| 271 | #include <linux/errno.h> |
| 272 | #include <linux/kernel.h> |
| 273 | #include <linux/mm.h> |
| 274 | #include <linux/slab.h> |
| 275 | #include <linux/cdrom.h> |
| 276 | #include <linux/sysctl.h> |
| 277 | #include <linux/proc_fs.h> |
| 278 | #include <linux/blkpg.h> |
| 279 | #include <linux/init.h> |
| 280 | #include <linux/fcntl.h> |
| 281 | #include <linux/blkdev.h> |
| 282 | #include <linux/times.h> |
| 283 | |
| 284 | #include <asm/uaccess.h> |
| 285 | |
| 286 | /* used to tell the module to turn on full debugging messages */ |
| 287 | static int debug; |
| 288 | /* used to keep tray locked at all times */ |
| 289 | static int keeplocked; |
| 290 | /* default compatibility mode */ |
| 291 | static int autoclose=1; |
| 292 | static int autoeject; |
| 293 | static int lockdoor = 1; |
| 294 | /* will we ever get to use this... sigh. */ |
| 295 | static int check_media_type; |
| 296 | /* automatically restart mrw format */ |
| 297 | static int mrw_format_restart = 1; |
| 298 | module_param(debug, bool, 0); |
| 299 | module_param(autoclose, bool, 0); |
| 300 | module_param(autoeject, bool, 0); |
| 301 | module_param(lockdoor, bool, 0); |
| 302 | module_param(check_media_type, bool, 0); |
| 303 | module_param(mrw_format_restart, bool, 0); |
| 304 | |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 305 | static DEFINE_MUTEX(cdrom_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
| 307 | static const char *mrw_format_status[] = { |
| 308 | "not mrw", |
| 309 | "bgformat inactive", |
| 310 | "bgformat active", |
| 311 | "mrw complete", |
| 312 | }; |
| 313 | |
| 314 | static const char *mrw_address_space[] = { "DMA", "GAA" }; |
| 315 | |
| 316 | #if (ERRLOGMASK!=CD_NOTHING) |
| 317 | #define cdinfo(type, fmt, args...) \ |
| 318 | if ((ERRLOGMASK & type) || debug==1 ) \ |
| 319 | printk(KERN_INFO "cdrom: " fmt, ## args) |
| 320 | #else |
| 321 | #define cdinfo(type, fmt, args...) |
| 322 | #endif |
| 323 | |
| 324 | /* These are used to simplify getting data in from and back to user land */ |
| 325 | #define IOCTL_IN(arg, type, in) \ |
| 326 | if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \ |
| 327 | return -EFAULT; |
| 328 | |
| 329 | #define IOCTL_OUT(arg, type, out) \ |
| 330 | if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \ |
| 331 | return -EFAULT; |
| 332 | |
| 333 | /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in |
| 334 | a lot of places. This macro makes the code more clear. */ |
| 335 | #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) |
| 336 | |
| 337 | /* used in the audio ioctls */ |
| 338 | #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret |
| 339 | |
Jens Axboe | 2e11c20 | 2007-01-03 08:10:35 +0100 | [diff] [blame] | 340 | /* |
| 341 | * Another popular OS uses 7 seconds as the hard timeout for default |
| 342 | * commands, so it is a good choice for us as well. |
| 343 | */ |
| 344 | #define CDROM_DEF_TIMEOUT (7 * HZ) |
| 345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | /* Not-exported routines. */ |
| 347 | static int open_for_data(struct cdrom_device_info * cdi); |
| 348 | static int check_for_audio_disc(struct cdrom_device_info * cdi, |
| 349 | struct cdrom_device_ops * cdo); |
| 350 | static void sanitize_format(union cdrom_addr *addr, |
| 351 | u_char * curr, u_char requested); |
| 352 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, |
| 353 | unsigned long arg); |
| 354 | |
| 355 | int cdrom_get_last_written(struct cdrom_device_info *, long *); |
| 356 | static int cdrom_get_next_writable(struct cdrom_device_info *, long *); |
| 357 | static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*); |
| 358 | |
| 359 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi); |
| 360 | |
| 361 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di); |
| 362 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | static void cdrom_sysctl_register(void); |
Akinobu Mita | 17672cf | 2008-03-26 12:08:59 +0100 | [diff] [blame] | 364 | |
Akinobu Mita | 7fd097d | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 365 | static LIST_HEAD(cdrom_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
| 367 | static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, |
| 368 | struct packet_command *cgc) |
| 369 | { |
| 370 | if (cgc->sense) { |
| 371 | cgc->sense->sense_key = 0x05; |
| 372 | cgc->sense->asc = 0x20; |
| 373 | cgc->sense->ascq = 0x00; |
| 374 | } |
| 375 | |
| 376 | cgc->stat = -EIO; |
| 377 | return -EIO; |
| 378 | } |
| 379 | |
| 380 | /* This macro makes sure we don't have to check on cdrom_device_ops |
| 381 | * existence in the run-time routines below. Change_capability is a |
| 382 | * hack to have the capability flags defined const, while we can still |
| 383 | * change it here without gcc complaining at every line. |
| 384 | */ |
| 385 | #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits) |
| 386 | |
| 387 | int register_cdrom(struct cdrom_device_info *cdi) |
| 388 | { |
| 389 | static char banner_printed; |
| 390 | struct cdrom_device_ops *cdo = cdi->ops; |
| 391 | int *change_capability = (int *)&cdo->capability; /* hack */ |
| 392 | |
| 393 | cdinfo(CD_OPEN, "entering register_cdrom\n"); |
| 394 | |
| 395 | if (cdo->open == NULL || cdo->release == NULL) |
Akinobu Mita | 3c3f4e0 | 2008-03-26 12:09:00 +0100 | [diff] [blame] | 396 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | if (!banner_printed) { |
| 398 | printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n"); |
| 399 | banner_printed = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | cdrom_sysctl_register(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | ENSURE(drive_status, CDC_DRIVE_STATUS ); |
| 404 | ENSURE(media_changed, CDC_MEDIA_CHANGED); |
| 405 | ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); |
| 406 | ENSURE(lock_door, CDC_LOCK); |
| 407 | ENSURE(select_speed, CDC_SELECT_SPEED); |
| 408 | ENSURE(get_last_session, CDC_MULTI_SESSION); |
| 409 | ENSURE(get_mcn, CDC_MCN); |
| 410 | ENSURE(reset, CDC_RESET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | ENSURE(generic_packet, CDC_GENERIC_PACKET); |
| 412 | cdi->mc_flags = 0; |
| 413 | cdo->n_minors = 0; |
| 414 | cdi->options = CDO_USE_FFLAGS; |
| 415 | |
| 416 | if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY)) |
| 417 | cdi->options |= (int) CDO_AUTO_CLOSE; |
| 418 | if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY)) |
| 419 | cdi->options |= (int) CDO_AUTO_EJECT; |
| 420 | if (lockdoor==1) |
| 421 | cdi->options |= (int) CDO_LOCK; |
| 422 | if (check_media_type==1) |
| 423 | cdi->options |= (int) CDO_CHECK_TYPE; |
| 424 | |
| 425 | if (CDROM_CAN(CDC_MRW_W)) |
| 426 | cdi->exit = cdrom_mrw_exit; |
| 427 | |
| 428 | if (cdi->disk) |
| 429 | cdi->cdda_method = CDDA_BPC_FULL; |
| 430 | else |
| 431 | cdi->cdda_method = CDDA_OLD; |
| 432 | |
| 433 | if (!cdo->generic_packet) |
| 434 | cdo->generic_packet = cdrom_dummy_generic_packet; |
| 435 | |
| 436 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 437 | mutex_lock(&cdrom_mutex); |
Akinobu Mita | 7fd097d | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 438 | list_add(&cdi->list, &cdrom_list); |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 439 | mutex_unlock(&cdrom_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | return 0; |
| 441 | } |
| 442 | #undef ENSURE |
| 443 | |
Akinobu Mita | 0a0c411 | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 444 | void unregister_cdrom(struct cdrom_device_info *cdi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | cdinfo(CD_OPEN, "entering unregister_cdrom\n"); |
| 447 | |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 448 | mutex_lock(&cdrom_mutex); |
Akinobu Mita | 7fd097d | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 449 | list_del(&cdi->list); |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 450 | mutex_unlock(&cdrom_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
| 452 | if (cdi->exit) |
| 453 | cdi->exit(cdi); |
| 454 | |
| 455 | cdi->ops->n_minors--; |
| 456 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | } |
| 458 | |
| 459 | int cdrom_get_media_event(struct cdrom_device_info *cdi, |
| 460 | struct media_event_desc *med) |
| 461 | { |
| 462 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 463 | unsigned char buffer[8]; |
| 464 | struct event_header *eh = (struct event_header *) buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 466 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; |
| 468 | cgc.cmd[1] = 1; /* IMMED */ |
| 469 | cgc.cmd[4] = 1 << 4; /* media event */ |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 470 | cgc.cmd[8] = sizeof(buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | cgc.quiet = 1; |
| 472 | |
| 473 | if (cdi->ops->generic_packet(cdi, &cgc)) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 474 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
| 476 | if (be16_to_cpu(eh->data_len) < sizeof(*med)) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 477 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
| 479 | if (eh->nea || eh->notification_class != 0x4) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 480 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 482 | memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); |
| 483 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | /* |
| 487 | * the first prototypes used 0x2c as the page code for the mrw mode page, |
| 488 | * subsequently this was changed to 0x03. probe the one used by this drive |
| 489 | */ |
| 490 | static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) |
| 491 | { |
| 492 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 493 | char buffer[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 495 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | |
| 497 | cgc.timeout = HZ; |
| 498 | cgc.quiet = 1; |
| 499 | |
| 500 | if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { |
| 501 | cdi->mrw_mode_page = MRW_MODE_PC; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 502 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { |
| 504 | cdi->mrw_mode_page = MRW_MODE_PC_PRE1; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 505 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | } |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 507 | |
| 508 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
| 510 | |
| 511 | static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) |
| 512 | { |
| 513 | struct packet_command cgc; |
| 514 | struct mrw_feature_desc *mfd; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 515 | unsigned char buffer[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | int ret; |
| 517 | |
| 518 | *write = 0; |
| 519 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 520 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
| 522 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; |
| 523 | cgc.cmd[3] = CDF_MRW; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 524 | cgc.cmd[8] = sizeof(buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | cgc.quiet = 1; |
| 526 | |
| 527 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 528 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
| 530 | mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 531 | if (be16_to_cpu(mfd->feature_code) != CDF_MRW) |
| 532 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | *write = mfd->write; |
| 534 | |
| 535 | if ((ret = cdrom_mrw_probe_pc(cdi))) { |
| 536 | *write = 0; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 537 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | } |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 539 | |
| 540 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | } |
| 542 | |
| 543 | static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) |
| 544 | { |
| 545 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 546 | unsigned char buffer[12]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | int ret; |
| 548 | |
| 549 | printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : ""); |
| 550 | |
| 551 | /* |
| 552 | * FmtData bit set (bit 4), format type is 1 |
| 553 | */ |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 554 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | cgc.cmd[0] = GPCMD_FORMAT_UNIT; |
| 556 | cgc.cmd[1] = (1 << 4) | 1; |
| 557 | |
| 558 | cgc.timeout = 5 * 60 * HZ; |
| 559 | |
| 560 | /* |
| 561 | * 4 byte format list header, 8 byte format list descriptor |
| 562 | */ |
| 563 | buffer[1] = 1 << 1; |
| 564 | buffer[3] = 8; |
| 565 | |
| 566 | /* |
| 567 | * nr_blocks field |
| 568 | */ |
| 569 | buffer[4] = 0xff; |
| 570 | buffer[5] = 0xff; |
| 571 | buffer[6] = 0xff; |
| 572 | buffer[7] = 0xff; |
| 573 | |
| 574 | buffer[8] = 0x24 << 2; |
| 575 | buffer[11] = cont; |
| 576 | |
| 577 | ret = cdi->ops->generic_packet(cdi, &cgc); |
| 578 | if (ret) |
| 579 | printk(KERN_INFO "cdrom: bgformat failed\n"); |
| 580 | |
| 581 | return ret; |
| 582 | } |
| 583 | |
| 584 | static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) |
| 585 | { |
| 586 | struct packet_command cgc; |
| 587 | |
| 588 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 589 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; |
| 590 | |
| 591 | /* |
| 592 | * Session = 1, Track = 0 |
| 593 | */ |
| 594 | cgc.cmd[1] = !!immed; |
| 595 | cgc.cmd[2] = 1 << 1; |
| 596 | |
| 597 | cgc.timeout = 5 * 60 * HZ; |
| 598 | |
| 599 | return cdi->ops->generic_packet(cdi, &cgc); |
| 600 | } |
| 601 | |
| 602 | static int cdrom_flush_cache(struct cdrom_device_info *cdi) |
| 603 | { |
| 604 | struct packet_command cgc; |
| 605 | |
| 606 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 607 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; |
| 608 | |
| 609 | cgc.timeout = 5 * 60 * HZ; |
| 610 | |
| 611 | return cdi->ops->generic_packet(cdi, &cgc); |
| 612 | } |
| 613 | |
| 614 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi) |
| 615 | { |
| 616 | disc_information di; |
| 617 | int ret; |
| 618 | |
| 619 | ret = cdrom_get_disc_info(cdi, &di); |
| 620 | if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) |
| 621 | return 1; |
| 622 | |
| 623 | ret = 0; |
| 624 | if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { |
| 625 | printk(KERN_INFO "cdrom: issuing MRW back ground " |
| 626 | "format suspend\n"); |
| 627 | ret = cdrom_mrw_bgformat_susp(cdi, 0); |
| 628 | } |
| 629 | |
Jens Axboe | 7da21a0 | 2005-05-01 12:12:52 -0700 | [diff] [blame] | 630 | if (!ret && cdi->media_written) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | ret = cdrom_flush_cache(cdi); |
| 632 | |
| 633 | return ret; |
| 634 | } |
| 635 | |
| 636 | static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) |
| 637 | { |
| 638 | struct packet_command cgc; |
| 639 | struct mode_page_header *mph; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 640 | char buffer[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | int ret, offset, size; |
| 642 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 643 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 645 | cgc.buffer = buffer; |
| 646 | cgc.buflen = sizeof(buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | |
| 648 | if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 649 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
| 651 | mph = (struct mode_page_header *) buffer; |
| 652 | offset = be16_to_cpu(mph->desc_length); |
| 653 | size = be16_to_cpu(mph->mode_data_length) + 2; |
| 654 | |
| 655 | buffer[offset + 3] = space; |
| 656 | cgc.buflen = size; |
| 657 | |
| 658 | if ((ret = cdrom_mode_select(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 659 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | |
| 661 | printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 662 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | } |
| 664 | |
| 665 | static int cdrom_get_random_writable(struct cdrom_device_info *cdi, |
| 666 | struct rwrt_feature_desc *rfd) |
| 667 | { |
| 668 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 669 | char buffer[24]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | int ret; |
| 671 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 672 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | |
| 674 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ |
| 675 | cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 676 | cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | cgc.quiet = 1; |
| 678 | |
| 679 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 680 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | |
| 682 | memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 683 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | } |
| 685 | |
| 686 | static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) |
| 687 | { |
| 688 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 689 | char buffer[16]; |
Alexey Dobriyan | 56052d5 | 2005-12-01 17:10:40 -0500 | [diff] [blame] | 690 | __be16 *feature_code; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | int ret; |
| 692 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 693 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | |
| 695 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; |
| 696 | cgc.cmd[3] = CDF_HWDM; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 697 | cgc.cmd[8] = sizeof(buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | cgc.quiet = 1; |
| 699 | |
| 700 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 701 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | |
Alexey Dobriyan | 56052d5 | 2005-12-01 17:10:40 -0500 | [diff] [blame] | 703 | feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | if (be16_to_cpu(*feature_code) == CDF_HWDM) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 705 | return 0; |
| 706 | |
| 707 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | |
| 711 | static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) |
| 712 | { |
| 713 | struct rwrt_feature_desc rfd; |
| 714 | int ret; |
| 715 | |
| 716 | *write = 0; |
| 717 | |
| 718 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) |
| 719 | return ret; |
| 720 | |
| 721 | if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) |
| 722 | *write = 1; |
| 723 | |
| 724 | return 0; |
| 725 | } |
| 726 | |
| 727 | static int cdrom_media_erasable(struct cdrom_device_info *cdi) |
| 728 | { |
| 729 | disc_information di; |
| 730 | int ret; |
| 731 | |
| 732 | ret = cdrom_get_disc_info(cdi, &di); |
| 733 | if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) |
| 734 | return -1; |
| 735 | |
| 736 | return di.erasable; |
| 737 | } |
| 738 | |
| 739 | /* |
| 740 | * FIXME: check RO bit |
| 741 | */ |
| 742 | static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) |
| 743 | { |
| 744 | int ret = cdrom_media_erasable(cdi); |
| 745 | |
| 746 | /* |
| 747 | * allow writable open if media info read worked and media is |
| 748 | * erasable, _or_ if it fails since not all drives support it |
| 749 | */ |
| 750 | if (!ret) |
| 751 | return 1; |
| 752 | |
| 753 | return 0; |
| 754 | } |
| 755 | |
| 756 | static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) |
| 757 | { |
| 758 | disc_information di; |
| 759 | int ret; |
| 760 | |
| 761 | /* |
| 762 | * always reset to DMA lba space on open |
| 763 | */ |
| 764 | if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { |
| 765 | printk(KERN_ERR "cdrom: failed setting lba address space\n"); |
| 766 | return 1; |
| 767 | } |
| 768 | |
| 769 | ret = cdrom_get_disc_info(cdi, &di); |
| 770 | if (ret < 0 || ret < offsetof(typeof(di),disc_type)) |
| 771 | return 1; |
| 772 | |
| 773 | if (!di.erasable) |
| 774 | return 1; |
| 775 | |
| 776 | /* |
| 777 | * mrw_status |
| 778 | * 0 - not MRW formatted |
| 779 | * 1 - MRW bgformat started, but not running or complete |
| 780 | * 2 - MRW bgformat in progress |
| 781 | * 3 - MRW formatting complete |
| 782 | */ |
| 783 | ret = 0; |
| 784 | printk(KERN_INFO "cdrom open: mrw_status '%s'\n", |
| 785 | mrw_format_status[di.mrw_status]); |
| 786 | if (!di.mrw_status) |
| 787 | ret = 1; |
| 788 | else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && |
| 789 | mrw_format_restart) |
| 790 | ret = cdrom_mrw_bgformat(cdi, 1); |
| 791 | |
| 792 | return ret; |
| 793 | } |
| 794 | |
| 795 | static int mo_open_write(struct cdrom_device_info *cdi) |
| 796 | { |
| 797 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 798 | char buffer[255]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | int ret; |
| 800 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 801 | init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | cgc.quiet = 1; |
| 803 | |
| 804 | /* |
| 805 | * obtain write protect information as per |
| 806 | * drivers/scsi/sd.c:sd_read_write_protect_flag |
| 807 | */ |
| 808 | |
| 809 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); |
| 810 | if (ret) |
| 811 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); |
| 812 | if (ret) { |
| 813 | cgc.buflen = 255; |
| 814 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); |
| 815 | } |
| 816 | |
| 817 | /* drive gave us no info, let the user go ahead */ |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 818 | if (ret) |
| 819 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 821 | return buffer[3] & 0x80; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | } |
| 823 | |
| 824 | static int cdrom_ram_open_write(struct cdrom_device_info *cdi) |
| 825 | { |
| 826 | struct rwrt_feature_desc rfd; |
| 827 | int ret; |
| 828 | |
| 829 | if ((ret = cdrom_has_defect_mgt(cdi))) |
| 830 | return ret; |
| 831 | |
| 832 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) |
| 833 | return ret; |
| 834 | else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) |
| 835 | ret = !rfd.curr; |
| 836 | |
| 837 | cdinfo(CD_OPEN, "can open for random write\n"); |
| 838 | return ret; |
| 839 | } |
| 840 | |
| 841 | static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) |
| 842 | { |
| 843 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 844 | char buffer[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | int ret, mmc3_profile; |
| 846 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 847 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | |
| 849 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; |
| 850 | cgc.cmd[1] = 0; |
| 851 | cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 852 | cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | cgc.quiet = 1; |
| 854 | |
| 855 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
| 856 | mmc3_profile = 0xffff; |
| 857 | else |
| 858 | mmc3_profile = (buffer[6] << 8) | buffer[7]; |
| 859 | |
| 860 | cdi->mmc3_profile = mmc3_profile; |
| 861 | } |
| 862 | |
| 863 | static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) |
| 864 | { |
| 865 | switch (cdi->mmc3_profile) { |
| 866 | case 0x12: /* DVD-RAM */ |
| 867 | case 0x1A: /* DVD+RW */ |
| 868 | return 0; |
| 869 | default: |
| 870 | return 1; |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | /* |
| 875 | * returns 0 for ok to open write, non-0 to disallow |
| 876 | */ |
| 877 | static int cdrom_open_write(struct cdrom_device_info *cdi) |
| 878 | { |
| 879 | int mrw, mrw_write, ram_write; |
| 880 | int ret = 1; |
| 881 | |
| 882 | mrw = 0; |
| 883 | if (!cdrom_is_mrw(cdi, &mrw_write)) |
| 884 | mrw = 1; |
| 885 | |
| 886 | if (CDROM_CAN(CDC_MO_DRIVE)) |
| 887 | ram_write = 1; |
| 888 | else |
| 889 | (void) cdrom_is_random_writable(cdi, &ram_write); |
| 890 | |
| 891 | if (mrw) |
| 892 | cdi->mask &= ~CDC_MRW; |
| 893 | else |
| 894 | cdi->mask |= CDC_MRW; |
| 895 | |
| 896 | if (mrw_write) |
| 897 | cdi->mask &= ~CDC_MRW_W; |
| 898 | else |
| 899 | cdi->mask |= CDC_MRW_W; |
| 900 | |
| 901 | if (ram_write) |
| 902 | cdi->mask &= ~CDC_RAM; |
| 903 | else |
| 904 | cdi->mask |= CDC_RAM; |
| 905 | |
| 906 | if (CDROM_CAN(CDC_MRW_W)) |
| 907 | ret = cdrom_mrw_open_write(cdi); |
| 908 | else if (CDROM_CAN(CDC_DVD_RAM)) |
| 909 | ret = cdrom_dvdram_open_write(cdi); |
| 910 | else if (CDROM_CAN(CDC_RAM) && |
| 911 | !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE)) |
| 912 | ret = cdrom_ram_open_write(cdi); |
| 913 | else if (CDROM_CAN(CDC_MO_DRIVE)) |
| 914 | ret = mo_open_write(cdi); |
| 915 | else if (!cdrom_is_dvd_rw(cdi)) |
| 916 | ret = 0; |
| 917 | |
| 918 | return ret; |
| 919 | } |
| 920 | |
| 921 | static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) |
| 922 | { |
| 923 | struct packet_command cgc; |
| 924 | |
| 925 | if (cdi->mmc3_profile != 0x1a) { |
| 926 | cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); |
| 927 | return; |
| 928 | } |
| 929 | |
| 930 | if (!cdi->media_written) { |
| 931 | cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); |
| 932 | return; |
| 933 | } |
| 934 | |
| 935 | printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n", |
| 936 | cdi->name); |
| 937 | |
| 938 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 939 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; |
| 940 | cgc.timeout = 30*HZ; |
| 941 | cdi->ops->generic_packet(cdi, &cgc); |
| 942 | |
| 943 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 944 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; |
| 945 | cgc.timeout = 3000*HZ; |
| 946 | cgc.quiet = 1; |
| 947 | cdi->ops->generic_packet(cdi, &cgc); |
| 948 | |
| 949 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 950 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; |
| 951 | cgc.cmd[2] = 2; /* Close session */ |
| 952 | cgc.quiet = 1; |
| 953 | cgc.timeout = 3000*HZ; |
| 954 | cdi->ops->generic_packet(cdi, &cgc); |
| 955 | |
| 956 | cdi->media_written = 0; |
| 957 | } |
| 958 | |
| 959 | static int cdrom_close_write(struct cdrom_device_info *cdi) |
| 960 | { |
| 961 | #if 0 |
| 962 | return cdrom_flush_cache(cdi); |
| 963 | #else |
| 964 | return 0; |
| 965 | #endif |
| 966 | } |
| 967 | |
| 968 | /* We use the open-option O_NONBLOCK to indicate that the |
| 969 | * purpose of opening is only for subsequent ioctl() calls; no device |
| 970 | * integrity checks are performed. |
| 971 | * |
| 972 | * We hope that all cd-player programs will adopt this convention. It |
| 973 | * is in their own interest: device control becomes a lot easier |
| 974 | * this way. |
| 975 | */ |
| 976 | int cdrom_open(struct cdrom_device_info *cdi, struct inode *ip, struct file *fp) |
| 977 | { |
| 978 | int ret; |
| 979 | |
| 980 | cdinfo(CD_OPEN, "entering cdrom_open\n"); |
| 981 | |
| 982 | /* if this was a O_NONBLOCK open and we should honor the flags, |
| 983 | * do a quick open without drive/disc integrity checks. */ |
| 984 | cdi->use_count++; |
| 985 | if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS)) { |
| 986 | ret = cdi->ops->open(cdi, 1); |
| 987 | } else { |
| 988 | ret = open_for_data(cdi); |
| 989 | if (ret) |
| 990 | goto err; |
| 991 | cdrom_mmc3_profile(cdi); |
| 992 | if (fp->f_mode & FMODE_WRITE) { |
| 993 | ret = -EROFS; |
| 994 | if (cdrom_open_write(cdi)) |
Jens Axboe | 1607042 | 2006-06-16 07:46:37 +0200 | [diff] [blame] | 995 | goto err_release; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | if (!CDROM_CAN(CDC_RAM)) |
Jens Axboe | 1607042 | 2006-06-16 07:46:37 +0200 | [diff] [blame] | 997 | goto err_release; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | ret = 0; |
| 999 | cdi->media_written = 0; |
| 1000 | } |
| 1001 | } |
| 1002 | |
| 1003 | if (ret) |
| 1004 | goto err; |
| 1005 | |
| 1006 | cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", |
| 1007 | cdi->name, cdi->use_count); |
| 1008 | /* Do this on open. Don't wait for mount, because they might |
| 1009 | not be mounting, but opening with O_NONBLOCK */ |
| 1010 | check_disk_change(ip->i_bdev); |
| 1011 | return 0; |
Jens Axboe | 1607042 | 2006-06-16 07:46:37 +0200 | [diff] [blame] | 1012 | err_release: |
Al Viro | ae3ba4f | 2007-09-26 08:20:44 +0200 | [diff] [blame] | 1013 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
| 1014 | cdi->ops->lock_door(cdi, 0); |
| 1015 | cdinfo(CD_OPEN, "door unlocked.\n"); |
| 1016 | } |
Jens Axboe | 1607042 | 2006-06-16 07:46:37 +0200 | [diff] [blame] | 1017 | cdi->ops->release(cdi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | err: |
| 1019 | cdi->use_count--; |
| 1020 | return ret; |
| 1021 | } |
| 1022 | |
| 1023 | static |
| 1024 | int open_for_data(struct cdrom_device_info * cdi) |
| 1025 | { |
| 1026 | int ret; |
| 1027 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1028 | tracktype tracks; |
| 1029 | cdinfo(CD_OPEN, "entering open_for_data\n"); |
| 1030 | /* Check if the driver can report drive status. If it can, we |
| 1031 | can do clever things. If it can't, well, we at least tried! */ |
| 1032 | if (cdo->drive_status != NULL) { |
| 1033 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
| 1034 | cdinfo(CD_OPEN, "drive_status=%d\n", ret); |
| 1035 | if (ret == CDS_TRAY_OPEN) { |
| 1036 | cdinfo(CD_OPEN, "the tray is open...\n"); |
| 1037 | /* can/may i close it? */ |
| 1038 | if (CDROM_CAN(CDC_CLOSE_TRAY) && |
| 1039 | cdi->options & CDO_AUTO_CLOSE) { |
| 1040 | cdinfo(CD_OPEN, "trying to close the tray.\n"); |
| 1041 | ret=cdo->tray_move(cdi,0); |
| 1042 | if (ret) { |
| 1043 | cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n"); |
| 1044 | /* Ignore the error from the low |
| 1045 | level driver. We don't care why it |
| 1046 | couldn't close the tray. We only care |
| 1047 | that there is no disc in the drive, |
| 1048 | since that is the _REAL_ problem here.*/ |
| 1049 | ret=-ENOMEDIUM; |
| 1050 | goto clean_up_and_return; |
| 1051 | } |
| 1052 | } else { |
| 1053 | cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n"); |
| 1054 | ret=-ENOMEDIUM; |
| 1055 | goto clean_up_and_return; |
| 1056 | } |
| 1057 | /* Ok, the door should be closed now.. Check again */ |
| 1058 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
| 1059 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { |
| 1060 | cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); |
| 1061 | cdinfo(CD_OPEN, "tray might not contain a medium.\n"); |
| 1062 | ret=-ENOMEDIUM; |
| 1063 | goto clean_up_and_return; |
| 1064 | } |
| 1065 | cdinfo(CD_OPEN, "the tray is now closed.\n"); |
| 1066 | } |
| 1067 | /* the door should be closed now, check for the disc */ |
| 1068 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
| 1069 | if (ret!=CDS_DISC_OK) { |
| 1070 | ret = -ENOMEDIUM; |
| 1071 | goto clean_up_and_return; |
| 1072 | } |
| 1073 | } |
| 1074 | cdrom_count_tracks(cdi, &tracks); |
| 1075 | if (tracks.error == CDS_NO_DISC) { |
| 1076 | cdinfo(CD_OPEN, "bummer. no disc.\n"); |
| 1077 | ret=-ENOMEDIUM; |
| 1078 | goto clean_up_and_return; |
| 1079 | } |
| 1080 | /* CD-Players which don't use O_NONBLOCK, workman |
| 1081 | * for example, need bit CDO_CHECK_TYPE cleared! */ |
| 1082 | if (tracks.data==0) { |
| 1083 | if (cdi->options & CDO_CHECK_TYPE) { |
| 1084 | /* give people a warning shot, now that CDO_CHECK_TYPE |
| 1085 | is the default case! */ |
| 1086 | cdinfo(CD_OPEN, "bummer. wrong media type.\n"); |
| 1087 | cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", |
Pavel Emelyanov | ba25f9d | 2007-10-18 23:40:40 -0700 | [diff] [blame] | 1088 | (unsigned int)task_pid_nr(current)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | ret=-EMEDIUMTYPE; |
| 1090 | goto clean_up_and_return; |
| 1091 | } |
| 1092 | else { |
| 1093 | cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n"); |
| 1094 | } |
| 1095 | } |
| 1096 | |
| 1097 | cdinfo(CD_OPEN, "all seems well, opening the device.\n"); |
| 1098 | |
| 1099 | /* all seems well, we can open the device */ |
| 1100 | ret = cdo->open(cdi, 0); /* open for data */ |
| 1101 | cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret); |
| 1102 | /* After all this careful checking, we shouldn't have problems |
| 1103 | opening the device, but we don't want the device locked if |
| 1104 | this somehow fails... */ |
| 1105 | if (ret) { |
| 1106 | cdinfo(CD_OPEN, "open device failed.\n"); |
| 1107 | goto clean_up_and_return; |
| 1108 | } |
| 1109 | if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { |
| 1110 | cdo->lock_door(cdi, 1); |
| 1111 | cdinfo(CD_OPEN, "door locked.\n"); |
| 1112 | } |
| 1113 | cdinfo(CD_OPEN, "device opened successfully.\n"); |
| 1114 | return ret; |
| 1115 | |
| 1116 | /* Something failed. Try to unlock the drive, because some drivers |
| 1117 | (notably ide-cd) lock the drive after every command. This produced |
| 1118 | a nasty bug where after mount failed, the drive would remain locked! |
| 1119 | This ensures that the drive gets unlocked after a mount fails. This |
| 1120 | is a goto to avoid bloating the driver with redundant code. */ |
| 1121 | clean_up_and_return: |
Jens Axboe | 00d6da9 | 2006-01-10 10:43:54 +0100 | [diff] [blame] | 1122 | cdinfo(CD_OPEN, "open failed.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
| 1124 | cdo->lock_door(cdi, 0); |
| 1125 | cdinfo(CD_OPEN, "door unlocked.\n"); |
| 1126 | } |
| 1127 | return ret; |
| 1128 | } |
| 1129 | |
| 1130 | /* This code is similar to that in open_for_data. The routine is called |
| 1131 | whenever an audio play operation is requested. |
| 1132 | */ |
Adrian Bunk | ecb80c6 | 2008-03-04 11:23:51 +0100 | [diff] [blame] | 1133 | static int check_for_audio_disc(struct cdrom_device_info * cdi, |
| 1134 | struct cdrom_device_ops * cdo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | { |
| 1136 | int ret; |
| 1137 | tracktype tracks; |
| 1138 | cdinfo(CD_OPEN, "entering check_for_audio_disc\n"); |
| 1139 | if (!(cdi->options & CDO_CHECK_TYPE)) |
| 1140 | return 0; |
| 1141 | if (cdo->drive_status != NULL) { |
| 1142 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
| 1143 | cdinfo(CD_OPEN, "drive_status=%d\n", ret); |
| 1144 | if (ret == CDS_TRAY_OPEN) { |
| 1145 | cdinfo(CD_OPEN, "the tray is open...\n"); |
| 1146 | /* can/may i close it? */ |
| 1147 | if (CDROM_CAN(CDC_CLOSE_TRAY) && |
| 1148 | cdi->options & CDO_AUTO_CLOSE) { |
| 1149 | cdinfo(CD_OPEN, "trying to close the tray.\n"); |
| 1150 | ret=cdo->tray_move(cdi,0); |
| 1151 | if (ret) { |
| 1152 | cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n"); |
| 1153 | /* Ignore the error from the low |
| 1154 | level driver. We don't care why it |
| 1155 | couldn't close the tray. We only care |
| 1156 | that there is no disc in the drive, |
| 1157 | since that is the _REAL_ problem here.*/ |
| 1158 | return -ENOMEDIUM; |
| 1159 | } |
| 1160 | } else { |
| 1161 | cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n"); |
| 1162 | return -ENOMEDIUM; |
| 1163 | } |
| 1164 | /* Ok, the door should be closed now.. Check again */ |
| 1165 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
| 1166 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { |
| 1167 | cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); |
| 1168 | return -ENOMEDIUM; |
| 1169 | } |
| 1170 | if (ret!=CDS_DISC_OK) { |
| 1171 | cdinfo(CD_OPEN, "bummer. disc isn't ready.\n"); |
| 1172 | return -EIO; |
| 1173 | } |
| 1174 | cdinfo(CD_OPEN, "the tray is now closed.\n"); |
| 1175 | } |
| 1176 | } |
| 1177 | cdrom_count_tracks(cdi, &tracks); |
| 1178 | if (tracks.error) |
| 1179 | return(tracks.error); |
| 1180 | |
| 1181 | if (tracks.audio==0) |
| 1182 | return -EMEDIUMTYPE; |
| 1183 | |
| 1184 | return 0; |
| 1185 | } |
| 1186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | int cdrom_release(struct cdrom_device_info *cdi, struct file *fp) |
| 1188 | { |
| 1189 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1190 | int opened_for_data; |
| 1191 | |
Borislav Petkov | 35841f7 | 2008-02-06 01:38:08 -0800 | [diff] [blame] | 1192 | cdinfo(CD_CLOSE, "entering cdrom_release\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | |
| 1194 | if (cdi->use_count > 0) |
| 1195 | cdi->use_count--; |
Borislav Petkov | 35841f7 | 2008-02-06 01:38:08 -0800 | [diff] [blame] | 1196 | |
| 1197 | if (cdi->use_count == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | cdrom_dvd_rw_close_write(cdi); |
Borislav Petkov | 35841f7 | 2008-02-06 01:38:08 -0800 | [diff] [blame] | 1200 | |
| 1201 | if ((cdo->capability & CDC_LOCK) && !keeplocked) { |
| 1202 | cdinfo(CD_CLOSE, "Unlocking door!\n"); |
| 1203 | cdo->lock_door(cdi, 0); |
| 1204 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | } |
Borislav Petkov | 35841f7 | 2008-02-06 01:38:08 -0800 | [diff] [blame] | 1206 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || |
| 1208 | !(fp && fp->f_flags & O_NONBLOCK); |
| 1209 | |
| 1210 | /* |
| 1211 | * flush cache on last write release |
| 1212 | */ |
| 1213 | if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) |
| 1214 | cdrom_close_write(cdi); |
| 1215 | |
| 1216 | cdo->release(cdi); |
| 1217 | if (cdi->use_count == 0) { /* last process that closes dev*/ |
| 1218 | if (opened_for_data && |
| 1219 | cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) |
| 1220 | cdo->tray_move(cdi, 1); |
| 1221 | } |
| 1222 | return 0; |
| 1223 | } |
| 1224 | |
| 1225 | static int cdrom_read_mech_status(struct cdrom_device_info *cdi, |
| 1226 | struct cdrom_changer_info *buf) |
| 1227 | { |
| 1228 | struct packet_command cgc; |
| 1229 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1230 | int length; |
| 1231 | |
| 1232 | /* |
| 1233 | * Sanyo changer isn't spec compliant (doesn't use regular change |
| 1234 | * LOAD_UNLOAD command, and it doesn't implement the mech status |
| 1235 | * command below |
| 1236 | */ |
| 1237 | if (cdi->sanyo_slot) { |
| 1238 | buf->hdr.nslots = 3; |
| 1239 | buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; |
| 1240 | for (length = 0; length < 3; length++) { |
| 1241 | buf->slots[length].disc_present = 1; |
| 1242 | buf->slots[length].change = 0; |
| 1243 | } |
| 1244 | return 0; |
| 1245 | } |
| 1246 | |
| 1247 | length = sizeof(struct cdrom_mechstat_header) + |
| 1248 | cdi->capacity * sizeof(struct cdrom_slot); |
| 1249 | |
| 1250 | init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); |
| 1251 | cgc.cmd[0] = GPCMD_MECHANISM_STATUS; |
| 1252 | cgc.cmd[8] = (length >> 8) & 0xff; |
| 1253 | cgc.cmd[9] = length & 0xff; |
| 1254 | return cdo->generic_packet(cdi, &cgc); |
| 1255 | } |
| 1256 | |
| 1257 | static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) |
| 1258 | { |
| 1259 | struct cdrom_changer_info *info; |
| 1260 | int ret; |
| 1261 | |
| 1262 | cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n"); |
| 1263 | if (cdi->sanyo_slot) |
| 1264 | return CDS_NO_INFO; |
| 1265 | |
| 1266 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 1267 | if (!info) |
| 1268 | return -ENOMEM; |
| 1269 | |
| 1270 | if ((ret = cdrom_read_mech_status(cdi, info))) |
| 1271 | goto out_free; |
| 1272 | |
| 1273 | if (info->slots[slot].disc_present) |
| 1274 | ret = CDS_DISC_OK; |
| 1275 | else |
| 1276 | ret = CDS_NO_DISC; |
| 1277 | |
| 1278 | out_free: |
| 1279 | kfree(info); |
| 1280 | return ret; |
| 1281 | } |
| 1282 | |
| 1283 | /* Return the number of slots for an ATAPI/SCSI cdrom, |
| 1284 | * return 1 if not a changer. |
| 1285 | */ |
| 1286 | int cdrom_number_of_slots(struct cdrom_device_info *cdi) |
| 1287 | { |
| 1288 | int status; |
| 1289 | int nslots = 1; |
| 1290 | struct cdrom_changer_info *info; |
| 1291 | |
| 1292 | cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n"); |
| 1293 | /* cdrom_read_mech_status requires a valid value for capacity: */ |
| 1294 | cdi->capacity = 0; |
| 1295 | |
| 1296 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 1297 | if (!info) |
| 1298 | return -ENOMEM; |
| 1299 | |
| 1300 | if ((status = cdrom_read_mech_status(cdi, info)) == 0) |
| 1301 | nslots = info->hdr.nslots; |
| 1302 | |
| 1303 | kfree(info); |
| 1304 | return nslots; |
| 1305 | } |
| 1306 | |
| 1307 | |
| 1308 | /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ |
| 1309 | static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) |
| 1310 | { |
| 1311 | struct packet_command cgc; |
| 1312 | |
| 1313 | cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n"); |
| 1314 | if (cdi->sanyo_slot && slot < 0) |
| 1315 | return 0; |
| 1316 | |
| 1317 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 1318 | cgc.cmd[0] = GPCMD_LOAD_UNLOAD; |
| 1319 | cgc.cmd[4] = 2 + (slot >= 0); |
| 1320 | cgc.cmd[8] = slot; |
| 1321 | cgc.timeout = 60 * HZ; |
| 1322 | |
| 1323 | /* The Sanyo 3 CD changer uses byte 7 of the |
| 1324 | GPCMD_TEST_UNIT_READY to command to switch CDs instead of |
| 1325 | using the GPCMD_LOAD_UNLOAD opcode. */ |
| 1326 | if (cdi->sanyo_slot && -1 < slot) { |
| 1327 | cgc.cmd[0] = GPCMD_TEST_UNIT_READY; |
| 1328 | cgc.cmd[7] = slot; |
| 1329 | cgc.cmd[4] = cgc.cmd[8] = 0; |
| 1330 | cdi->sanyo_slot = slot ? slot : 3; |
| 1331 | } |
| 1332 | |
| 1333 | return cdi->ops->generic_packet(cdi, &cgc); |
| 1334 | } |
| 1335 | |
| 1336 | static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) |
| 1337 | { |
| 1338 | struct cdrom_changer_info *info; |
| 1339 | int curslot; |
| 1340 | int ret; |
| 1341 | |
| 1342 | cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n"); |
| 1343 | if (!CDROM_CAN(CDC_SELECT_DISC)) |
| 1344 | return -EDRIVE_CANT_DO_THIS; |
| 1345 | |
| 1346 | (void) cdi->ops->media_changed(cdi, slot); |
| 1347 | |
| 1348 | if (slot == CDSL_NONE) { |
| 1349 | /* set media changed bits, on both queues */ |
| 1350 | cdi->mc_flags = 0x3; |
| 1351 | return cdrom_load_unload(cdi, -1); |
| 1352 | } |
| 1353 | |
| 1354 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 1355 | if (!info) |
| 1356 | return -ENOMEM; |
| 1357 | |
| 1358 | if ((ret = cdrom_read_mech_status(cdi, info))) { |
| 1359 | kfree(info); |
| 1360 | return ret; |
| 1361 | } |
| 1362 | |
| 1363 | curslot = info->hdr.curslot; |
| 1364 | kfree(info); |
| 1365 | |
| 1366 | if (cdi->use_count > 1 || keeplocked) { |
| 1367 | if (slot == CDSL_CURRENT) { |
| 1368 | return curslot; |
| 1369 | } else { |
| 1370 | return -EBUSY; |
| 1371 | } |
| 1372 | } |
| 1373 | |
| 1374 | /* Specifying CDSL_CURRENT will attempt to load the currnet slot, |
| 1375 | which is useful if it had been previously unloaded. |
| 1376 | Whether it can or not, it returns the current slot. |
| 1377 | Similarly, if slot happens to be the current one, we still |
| 1378 | try and load it. */ |
| 1379 | if (slot == CDSL_CURRENT) |
| 1380 | slot = curslot; |
| 1381 | |
| 1382 | /* set media changed bits on both queues */ |
| 1383 | cdi->mc_flags = 0x3; |
| 1384 | if ((ret = cdrom_load_unload(cdi, slot))) |
| 1385 | return ret; |
| 1386 | |
| 1387 | return slot; |
| 1388 | } |
| 1389 | |
| 1390 | /* We want to make media_changed accessible to the user through an |
| 1391 | * ioctl. The main problem now is that we must double-buffer the |
| 1392 | * low-level implementation, to assure that the VFS and the user both |
| 1393 | * see a medium change once. |
| 1394 | */ |
| 1395 | |
| 1396 | static |
| 1397 | int media_changed(struct cdrom_device_info *cdi, int queue) |
| 1398 | { |
| 1399 | unsigned int mask = (1 << (queue & 1)); |
| 1400 | int ret = !!(cdi->mc_flags & mask); |
| 1401 | |
| 1402 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
| 1403 | return ret; |
| 1404 | /* changed since last call? */ |
| 1405 | if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) { |
| 1406 | cdi->mc_flags = 0x3; /* set bit on both queues */ |
| 1407 | ret |= 1; |
| 1408 | cdi->media_written = 0; |
| 1409 | } |
| 1410 | cdi->mc_flags &= ~mask; /* clear bit */ |
| 1411 | return ret; |
| 1412 | } |
| 1413 | |
| 1414 | int cdrom_media_changed(struct cdrom_device_info *cdi) |
| 1415 | { |
| 1416 | /* This talks to the VFS, which doesn't like errors - just 1 or 0. |
| 1417 | * Returning "0" is always safe (media hasn't been changed). Do that |
| 1418 | * if the low-level cdrom driver dosn't support media changed. */ |
| 1419 | if (cdi == NULL || cdi->ops->media_changed == NULL) |
| 1420 | return 0; |
| 1421 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
| 1422 | return 0; |
| 1423 | return media_changed(cdi, 0); |
| 1424 | } |
| 1425 | |
| 1426 | /* badly broken, I know. Is due for a fixup anytime. */ |
| 1427 | static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks) |
| 1428 | { |
| 1429 | struct cdrom_tochdr header; |
| 1430 | struct cdrom_tocentry entry; |
| 1431 | int ret, i; |
| 1432 | tracks->data=0; |
| 1433 | tracks->audio=0; |
| 1434 | tracks->cdi=0; |
| 1435 | tracks->xa=0; |
| 1436 | tracks->error=0; |
| 1437 | cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | /* Grab the TOC header so we can see how many tracks there are */ |
| 1439 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) { |
| 1440 | if (ret == -ENOMEDIUM) |
| 1441 | tracks->error = CDS_NO_DISC; |
| 1442 | else |
| 1443 | tracks->error = CDS_NO_INFO; |
| 1444 | return; |
| 1445 | } |
| 1446 | /* check what type of tracks are on this disc */ |
| 1447 | entry.cdte_format = CDROM_MSF; |
| 1448 | for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { |
| 1449 | entry.cdte_track = i; |
| 1450 | if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { |
| 1451 | tracks->error=CDS_NO_INFO; |
| 1452 | return; |
| 1453 | } |
| 1454 | if (entry.cdte_ctrl & CDROM_DATA_TRACK) { |
| 1455 | if (entry.cdte_format == 0x10) |
| 1456 | tracks->cdi++; |
| 1457 | else if (entry.cdte_format == 0x20) |
| 1458 | tracks->xa++; |
| 1459 | else |
| 1460 | tracks->data++; |
| 1461 | } else |
| 1462 | tracks->audio++; |
| 1463 | cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", |
| 1464 | i, entry.cdte_format, entry.cdte_ctrl); |
| 1465 | } |
| 1466 | cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", |
| 1467 | header.cdth_trk1, tracks->audio, tracks->data, |
| 1468 | tracks->cdi, tracks->xa); |
| 1469 | } |
| 1470 | |
| 1471 | /* Requests to the low-level drivers will /always/ be done in the |
| 1472 | following format convention: |
| 1473 | |
| 1474 | CDROM_LBA: all data-related requests. |
| 1475 | CDROM_MSF: all audio-related requests. |
| 1476 | |
| 1477 | However, a low-level implementation is allowed to refuse this |
| 1478 | request, and return information in its own favorite format. |
| 1479 | |
| 1480 | It doesn't make sense /at all/ to ask for a play_audio in LBA |
| 1481 | format, or ask for multi-session info in MSF format. However, for |
| 1482 | backward compatibility these format requests will be satisfied, but |
| 1483 | the requests to the low-level drivers will be sanitized in the more |
| 1484 | meaningful format indicated above. |
| 1485 | */ |
| 1486 | |
| 1487 | static |
| 1488 | void sanitize_format(union cdrom_addr *addr, |
| 1489 | u_char * curr, u_char requested) |
| 1490 | { |
| 1491 | if (*curr == requested) |
| 1492 | return; /* nothing to be done! */ |
| 1493 | if (requested == CDROM_LBA) { |
| 1494 | addr->lba = (int) addr->msf.frame + |
| 1495 | 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); |
| 1496 | } else { /* CDROM_MSF */ |
| 1497 | int lba = addr->lba; |
| 1498 | addr->msf.frame = lba % 75; |
| 1499 | lba /= 75; |
| 1500 | lba += 2; |
| 1501 | addr->msf.second = lba % 60; |
| 1502 | addr->msf.minute = lba / 60; |
| 1503 | } |
| 1504 | *curr = requested; |
| 1505 | } |
| 1506 | |
| 1507 | void init_cdrom_command(struct packet_command *cgc, void *buf, int len, |
| 1508 | int type) |
| 1509 | { |
| 1510 | memset(cgc, 0, sizeof(struct packet_command)); |
| 1511 | if (buf) |
| 1512 | memset(buf, 0, len); |
| 1513 | cgc->buffer = (char *) buf; |
| 1514 | cgc->buflen = len; |
| 1515 | cgc->data_direction = type; |
Jens Axboe | 2e11c20 | 2007-01-03 08:10:35 +0100 | [diff] [blame] | 1516 | cgc->timeout = CDROM_DEF_TIMEOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | } |
| 1518 | |
| 1519 | /* DVD handling */ |
| 1520 | |
| 1521 | #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) |
| 1522 | #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) |
| 1523 | |
| 1524 | static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) |
| 1525 | { |
| 1526 | cgc->cmd[0] = GPCMD_REPORT_KEY; |
| 1527 | cgc->cmd[10] = type | (agid << 6); |
| 1528 | switch (type) { |
| 1529 | case 0: case 8: case 5: { |
| 1530 | cgc->buflen = 8; |
| 1531 | break; |
| 1532 | } |
| 1533 | case 1: { |
| 1534 | cgc->buflen = 16; |
| 1535 | break; |
| 1536 | } |
| 1537 | case 2: case 4: { |
| 1538 | cgc->buflen = 12; |
| 1539 | break; |
| 1540 | } |
| 1541 | } |
| 1542 | cgc->cmd[9] = cgc->buflen; |
| 1543 | cgc->data_direction = CGC_DATA_READ; |
| 1544 | } |
| 1545 | |
| 1546 | static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) |
| 1547 | { |
| 1548 | cgc->cmd[0] = GPCMD_SEND_KEY; |
| 1549 | cgc->cmd[10] = type | (agid << 6); |
| 1550 | switch (type) { |
| 1551 | case 1: { |
| 1552 | cgc->buflen = 16; |
| 1553 | break; |
| 1554 | } |
| 1555 | case 3: { |
| 1556 | cgc->buflen = 12; |
| 1557 | break; |
| 1558 | } |
| 1559 | case 6: { |
| 1560 | cgc->buflen = 8; |
| 1561 | break; |
| 1562 | } |
| 1563 | } |
| 1564 | cgc->cmd[9] = cgc->buflen; |
| 1565 | cgc->data_direction = CGC_DATA_WRITE; |
| 1566 | } |
| 1567 | |
| 1568 | static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) |
| 1569 | { |
| 1570 | int ret; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1571 | u_char buf[20]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | struct packet_command cgc; |
| 1573 | struct cdrom_device_ops *cdo = cdi->ops; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1574 | rpc_state_t rpc_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1576 | memset(buf, 0, sizeof(buf)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); |
| 1578 | |
| 1579 | switch (ai->type) { |
| 1580 | /* LU data send */ |
| 1581 | case DVD_LU_SEND_AGID: |
| 1582 | cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n"); |
| 1583 | cgc.quiet = 1; |
| 1584 | setup_report_key(&cgc, ai->lsa.agid, 0); |
| 1585 | |
| 1586 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1587 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | |
| 1589 | ai->lsa.agid = buf[7] >> 6; |
| 1590 | /* Returning data, let host change state */ |
| 1591 | break; |
| 1592 | |
| 1593 | case DVD_LU_SEND_KEY1: |
| 1594 | cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); |
| 1595 | setup_report_key(&cgc, ai->lsk.agid, 2); |
| 1596 | |
| 1597 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1598 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | |
| 1600 | copy_key(ai->lsk.key, &buf[4]); |
| 1601 | /* Returning data, let host change state */ |
| 1602 | break; |
| 1603 | |
| 1604 | case DVD_LU_SEND_CHALLENGE: |
| 1605 | cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); |
| 1606 | setup_report_key(&cgc, ai->lsc.agid, 1); |
| 1607 | |
| 1608 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1609 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | |
| 1611 | copy_chal(ai->lsc.chal, &buf[4]); |
| 1612 | /* Returning data, let host change state */ |
| 1613 | break; |
| 1614 | |
| 1615 | /* Post-auth key */ |
| 1616 | case DVD_LU_SEND_TITLE_KEY: |
| 1617 | cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); |
| 1618 | cgc.quiet = 1; |
| 1619 | setup_report_key(&cgc, ai->lstk.agid, 4); |
| 1620 | cgc.cmd[5] = ai->lstk.lba; |
| 1621 | cgc.cmd[4] = ai->lstk.lba >> 8; |
| 1622 | cgc.cmd[3] = ai->lstk.lba >> 16; |
| 1623 | cgc.cmd[2] = ai->lstk.lba >> 24; |
| 1624 | |
| 1625 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1626 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | |
| 1628 | ai->lstk.cpm = (buf[4] >> 7) & 1; |
| 1629 | ai->lstk.cp_sec = (buf[4] >> 6) & 1; |
| 1630 | ai->lstk.cgms = (buf[4] >> 4) & 3; |
| 1631 | copy_key(ai->lstk.title_key, &buf[5]); |
| 1632 | /* Returning data, let host change state */ |
| 1633 | break; |
| 1634 | |
| 1635 | case DVD_LU_SEND_ASF: |
| 1636 | cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n"); |
| 1637 | setup_report_key(&cgc, ai->lsasf.agid, 5); |
| 1638 | |
| 1639 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1640 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | |
| 1642 | ai->lsasf.asf = buf[7] & 1; |
| 1643 | break; |
| 1644 | |
| 1645 | /* LU data receive (LU changes state) */ |
| 1646 | case DVD_HOST_SEND_CHALLENGE: |
| 1647 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); |
| 1648 | setup_send_key(&cgc, ai->hsc.agid, 1); |
| 1649 | buf[1] = 0xe; |
| 1650 | copy_chal(&buf[4], ai->hsc.chal); |
| 1651 | |
| 1652 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1653 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | |
| 1655 | ai->type = DVD_LU_SEND_KEY1; |
| 1656 | break; |
| 1657 | |
| 1658 | case DVD_HOST_SEND_KEY2: |
| 1659 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); |
| 1660 | setup_send_key(&cgc, ai->hsk.agid, 3); |
| 1661 | buf[1] = 0xa; |
| 1662 | copy_key(&buf[4], ai->hsk.key); |
| 1663 | |
| 1664 | if ((ret = cdo->generic_packet(cdi, &cgc))) { |
| 1665 | ai->type = DVD_AUTH_FAILURE; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1666 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | } |
| 1668 | ai->type = DVD_AUTH_ESTABLISHED; |
| 1669 | break; |
| 1670 | |
| 1671 | /* Misc */ |
| 1672 | case DVD_INVALIDATE_AGID: |
| 1673 | cgc.quiet = 1; |
| 1674 | cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); |
| 1675 | setup_report_key(&cgc, ai->lsa.agid, 0x3f); |
| 1676 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1677 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | break; |
| 1679 | |
| 1680 | /* Get region settings */ |
| 1681 | case DVD_LU_SEND_RPC_STATE: |
| 1682 | cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); |
| 1683 | setup_report_key(&cgc, 0, 8); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1684 | memset(&rpc_state, 0, sizeof(rpc_state_t)); |
| 1685 | cgc.buffer = (char *) &rpc_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | |
| 1687 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1688 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1690 | ai->lrpcs.type = rpc_state.type_code; |
| 1691 | ai->lrpcs.vra = rpc_state.vra; |
| 1692 | ai->lrpcs.ucca = rpc_state.ucca; |
| 1693 | ai->lrpcs.region_mask = rpc_state.region_mask; |
| 1694 | ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | break; |
| 1696 | |
| 1697 | /* Set region settings */ |
| 1698 | case DVD_HOST_SEND_RPC_STATE: |
| 1699 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); |
| 1700 | setup_send_key(&cgc, 0, 6); |
| 1701 | buf[1] = 6; |
| 1702 | buf[4] = ai->hrpcs.pdrc; |
| 1703 | |
| 1704 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1705 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | break; |
| 1707 | |
| 1708 | default: |
| 1709 | cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1710 | return -ENOTTY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | } |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1712 | |
| 1713 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | } |
| 1715 | |
| 1716 | static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s) |
| 1717 | { |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1718 | unsigned char buf[21], *base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | struct dvd_layer *layer; |
| 1720 | struct packet_command cgc; |
| 1721 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1722 | int ret, layer_num = s->physical.layer_num; |
| 1723 | |
| 1724 | if (layer_num >= DVD_LAYERS) |
| 1725 | return -EINVAL; |
| 1726 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1727 | init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1729 | cgc.cmd[6] = layer_num; |
| 1730 | cgc.cmd[7] = s->type; |
| 1731 | cgc.cmd[9] = cgc.buflen & 0xff; |
| 1732 | |
| 1733 | /* |
| 1734 | * refrain from reporting errors on non-existing layers (mainly) |
| 1735 | */ |
| 1736 | cgc.quiet = 1; |
| 1737 | |
| 1738 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1739 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1740 | |
| 1741 | base = &buf[4]; |
| 1742 | layer = &s->physical.layer[layer_num]; |
| 1743 | |
| 1744 | /* |
| 1745 | * place the data... really ugly, but at least we won't have to |
| 1746 | * worry about endianess in userspace. |
| 1747 | */ |
| 1748 | memset(layer, 0, sizeof(*layer)); |
| 1749 | layer->book_version = base[0] & 0xf; |
| 1750 | layer->book_type = base[0] >> 4; |
| 1751 | layer->min_rate = base[1] & 0xf; |
| 1752 | layer->disc_size = base[1] >> 4; |
| 1753 | layer->layer_type = base[2] & 0xf; |
| 1754 | layer->track_path = (base[2] >> 4) & 1; |
| 1755 | layer->nlayers = (base[2] >> 5) & 3; |
| 1756 | layer->track_density = base[3] & 0xf; |
| 1757 | layer->linear_density = base[3] >> 4; |
| 1758 | layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; |
| 1759 | layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; |
| 1760 | layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; |
| 1761 | layer->bca = base[16] >> 7; |
| 1762 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1763 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | } |
| 1765 | |
| 1766 | static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s) |
| 1767 | { |
| 1768 | int ret; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1769 | u_char buf[8]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1770 | struct packet_command cgc; |
| 1771 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1772 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1773 | init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1775 | cgc.cmd[6] = s->copyright.layer_num; |
| 1776 | cgc.cmd[7] = s->type; |
| 1777 | cgc.cmd[8] = cgc.buflen >> 8; |
| 1778 | cgc.cmd[9] = cgc.buflen & 0xff; |
| 1779 | |
| 1780 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1781 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | |
| 1783 | s->copyright.cpst = buf[4]; |
| 1784 | s->copyright.rmi = buf[5]; |
| 1785 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1786 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | } |
| 1788 | |
| 1789 | static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s) |
| 1790 | { |
| 1791 | int ret, size; |
| 1792 | u_char *buf; |
| 1793 | struct packet_command cgc; |
| 1794 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1795 | |
| 1796 | size = sizeof(s->disckey.value) + 4; |
| 1797 | |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 1798 | if ((buf = kmalloc(size, GFP_KERNEL)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1799 | return -ENOMEM; |
| 1800 | |
| 1801 | init_cdrom_command(&cgc, buf, size, CGC_DATA_READ); |
| 1802 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1803 | cgc.cmd[7] = s->type; |
| 1804 | cgc.cmd[8] = size >> 8; |
| 1805 | cgc.cmd[9] = size & 0xff; |
| 1806 | cgc.cmd[10] = s->disckey.agid << 6; |
| 1807 | |
| 1808 | if (!(ret = cdo->generic_packet(cdi, &cgc))) |
| 1809 | memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); |
| 1810 | |
| 1811 | kfree(buf); |
| 1812 | return ret; |
| 1813 | } |
| 1814 | |
| 1815 | static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s) |
| 1816 | { |
| 1817 | int ret; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1818 | u_char buf[4 + 188]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | struct packet_command cgc; |
| 1820 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1821 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1822 | init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1824 | cgc.cmd[7] = s->type; |
Jens Axboe | 454d6fb | 2006-07-10 04:44:08 -0700 | [diff] [blame] | 1825 | cgc.cmd[9] = cgc.buflen & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | |
| 1827 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1828 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | |
| 1830 | s->bca.len = buf[0] << 8 | buf[1]; |
| 1831 | if (s->bca.len < 12 || s->bca.len > 188) { |
| 1832 | cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1833 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1834 | } |
| 1835 | memcpy(s->bca.value, &buf[4], s->bca.len); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1836 | |
| 1837 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | } |
| 1839 | |
| 1840 | static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s) |
| 1841 | { |
| 1842 | int ret = 0, size; |
| 1843 | u_char *buf; |
| 1844 | struct packet_command cgc; |
| 1845 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1846 | |
| 1847 | size = sizeof(s->manufact.value) + 4; |
| 1848 | |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 1849 | if ((buf = kmalloc(size, GFP_KERNEL)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1850 | return -ENOMEM; |
| 1851 | |
| 1852 | init_cdrom_command(&cgc, buf, size, CGC_DATA_READ); |
| 1853 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1854 | cgc.cmd[7] = s->type; |
| 1855 | cgc.cmd[8] = size >> 8; |
| 1856 | cgc.cmd[9] = size & 0xff; |
| 1857 | |
| 1858 | if ((ret = cdo->generic_packet(cdi, &cgc))) { |
| 1859 | kfree(buf); |
| 1860 | return ret; |
| 1861 | } |
| 1862 | |
| 1863 | s->manufact.len = buf[0] << 8 | buf[1]; |
| 1864 | if (s->manufact.len < 0 || s->manufact.len > 2048) { |
| 1865 | cdinfo(CD_WARNING, "Received invalid manufacture info length" |
| 1866 | " (%d)\n", s->manufact.len); |
| 1867 | ret = -EIO; |
| 1868 | } else { |
| 1869 | memcpy(s->manufact.value, &buf[4], s->manufact.len); |
| 1870 | } |
| 1871 | |
| 1872 | kfree(buf); |
| 1873 | return ret; |
| 1874 | } |
| 1875 | |
| 1876 | static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s) |
| 1877 | { |
| 1878 | switch (s->type) { |
| 1879 | case DVD_STRUCT_PHYSICAL: |
| 1880 | return dvd_read_physical(cdi, s); |
| 1881 | |
| 1882 | case DVD_STRUCT_COPYRIGHT: |
| 1883 | return dvd_read_copyright(cdi, s); |
| 1884 | |
| 1885 | case DVD_STRUCT_DISCKEY: |
| 1886 | return dvd_read_disckey(cdi, s); |
| 1887 | |
| 1888 | case DVD_STRUCT_BCA: |
| 1889 | return dvd_read_bca(cdi, s); |
| 1890 | |
| 1891 | case DVD_STRUCT_MANUFACT: |
| 1892 | return dvd_read_manufact(cdi, s); |
| 1893 | |
| 1894 | default: |
| 1895 | cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", |
| 1896 | s->type); |
| 1897 | return -EINVAL; |
| 1898 | } |
| 1899 | } |
| 1900 | |
| 1901 | int cdrom_mode_sense(struct cdrom_device_info *cdi, |
| 1902 | struct packet_command *cgc, |
| 1903 | int page_code, int page_control) |
| 1904 | { |
| 1905 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1906 | |
| 1907 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); |
| 1908 | |
| 1909 | cgc->cmd[0] = GPCMD_MODE_SENSE_10; |
| 1910 | cgc->cmd[2] = page_code | (page_control << 6); |
| 1911 | cgc->cmd[7] = cgc->buflen >> 8; |
| 1912 | cgc->cmd[8] = cgc->buflen & 0xff; |
| 1913 | cgc->data_direction = CGC_DATA_READ; |
| 1914 | return cdo->generic_packet(cdi, cgc); |
| 1915 | } |
| 1916 | |
| 1917 | int cdrom_mode_select(struct cdrom_device_info *cdi, |
| 1918 | struct packet_command *cgc) |
| 1919 | { |
| 1920 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1921 | |
| 1922 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); |
| 1923 | memset(cgc->buffer, 0, 2); |
| 1924 | cgc->cmd[0] = GPCMD_MODE_SELECT_10; |
| 1925 | cgc->cmd[1] = 0x10; /* PF */ |
| 1926 | cgc->cmd[7] = cgc->buflen >> 8; |
| 1927 | cgc->cmd[8] = cgc->buflen & 0xff; |
| 1928 | cgc->data_direction = CGC_DATA_WRITE; |
| 1929 | return cdo->generic_packet(cdi, cgc); |
| 1930 | } |
| 1931 | |
| 1932 | static int cdrom_read_subchannel(struct cdrom_device_info *cdi, |
| 1933 | struct cdrom_subchnl *subchnl, int mcn) |
| 1934 | { |
| 1935 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1936 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1937 | char buffer[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1938 | int ret; |
| 1939 | |
| 1940 | init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); |
| 1941 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; |
| 1942 | cgc.cmd[1] = 2; /* MSF addressing */ |
| 1943 | cgc.cmd[2] = 0x40; /* request subQ data */ |
| 1944 | cgc.cmd[3] = mcn ? 2 : 1; |
| 1945 | cgc.cmd[8] = 16; |
| 1946 | |
| 1947 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1948 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | |
| 1950 | subchnl->cdsc_audiostatus = cgc.buffer[1]; |
| 1951 | subchnl->cdsc_format = CDROM_MSF; |
| 1952 | subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; |
| 1953 | subchnl->cdsc_trk = cgc.buffer[6]; |
| 1954 | subchnl->cdsc_ind = cgc.buffer[7]; |
| 1955 | |
| 1956 | subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; |
| 1957 | subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; |
| 1958 | subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; |
| 1959 | subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; |
| 1960 | subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; |
| 1961 | subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; |
| 1962 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1963 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | } |
| 1965 | |
| 1966 | /* |
| 1967 | * Specific READ_10 interface |
| 1968 | */ |
| 1969 | static int cdrom_read_cd(struct cdrom_device_info *cdi, |
| 1970 | struct packet_command *cgc, int lba, |
| 1971 | int blocksize, int nblocks) |
| 1972 | { |
| 1973 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1974 | |
| 1975 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); |
| 1976 | cgc->cmd[0] = GPCMD_READ_10; |
| 1977 | cgc->cmd[2] = (lba >> 24) & 0xff; |
| 1978 | cgc->cmd[3] = (lba >> 16) & 0xff; |
| 1979 | cgc->cmd[4] = (lba >> 8) & 0xff; |
| 1980 | cgc->cmd[5] = lba & 0xff; |
| 1981 | cgc->cmd[6] = (nblocks >> 16) & 0xff; |
| 1982 | cgc->cmd[7] = (nblocks >> 8) & 0xff; |
| 1983 | cgc->cmd[8] = nblocks & 0xff; |
| 1984 | cgc->buflen = blocksize * nblocks; |
| 1985 | return cdo->generic_packet(cdi, cgc); |
| 1986 | } |
| 1987 | |
| 1988 | /* very generic interface for reading the various types of blocks */ |
| 1989 | static int cdrom_read_block(struct cdrom_device_info *cdi, |
| 1990 | struct packet_command *cgc, |
| 1991 | int lba, int nblocks, int format, int blksize) |
| 1992 | { |
| 1993 | struct cdrom_device_ops *cdo = cdi->ops; |
| 1994 | |
| 1995 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); |
| 1996 | cgc->cmd[0] = GPCMD_READ_CD; |
| 1997 | /* expected sector size - cdda,mode1,etc. */ |
| 1998 | cgc->cmd[1] = format << 2; |
| 1999 | /* starting address */ |
| 2000 | cgc->cmd[2] = (lba >> 24) & 0xff; |
| 2001 | cgc->cmd[3] = (lba >> 16) & 0xff; |
| 2002 | cgc->cmd[4] = (lba >> 8) & 0xff; |
| 2003 | cgc->cmd[5] = lba & 0xff; |
| 2004 | /* number of blocks */ |
| 2005 | cgc->cmd[6] = (nblocks >> 16) & 0xff; |
| 2006 | cgc->cmd[7] = (nblocks >> 8) & 0xff; |
| 2007 | cgc->cmd[8] = nblocks & 0xff; |
| 2008 | cgc->buflen = blksize * nblocks; |
| 2009 | |
| 2010 | /* set the header info returned */ |
| 2011 | switch (blksize) { |
| 2012 | case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; |
| 2013 | case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; |
| 2014 | case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; |
| 2015 | default : cgc->cmd[9] = 0x10; |
| 2016 | } |
| 2017 | |
| 2018 | return cdo->generic_packet(cdi, cgc); |
| 2019 | } |
| 2020 | |
| 2021 | static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, |
| 2022 | int lba, int nframes) |
| 2023 | { |
| 2024 | struct packet_command cgc; |
| 2025 | int ret = 0; |
| 2026 | int nr; |
| 2027 | |
| 2028 | cdi->last_sense = 0; |
| 2029 | |
| 2030 | memset(&cgc, 0, sizeof(cgc)); |
| 2031 | |
| 2032 | /* |
| 2033 | * start with will ra.nframes size, back down if alloc fails |
| 2034 | */ |
| 2035 | nr = nframes; |
| 2036 | do { |
| 2037 | cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); |
| 2038 | if (cgc.buffer) |
| 2039 | break; |
| 2040 | |
| 2041 | nr >>= 1; |
| 2042 | } while (nr); |
| 2043 | |
| 2044 | if (!nr) |
| 2045 | return -ENOMEM; |
| 2046 | |
| 2047 | if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) { |
| 2048 | ret = -EFAULT; |
| 2049 | goto out; |
| 2050 | } |
| 2051 | |
| 2052 | cgc.data_direction = CGC_DATA_READ; |
| 2053 | while (nframes > 0) { |
| 2054 | if (nr > nframes) |
| 2055 | nr = nframes; |
| 2056 | |
| 2057 | ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); |
| 2058 | if (ret) |
| 2059 | break; |
| 2060 | if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { |
| 2061 | ret = -EFAULT; |
| 2062 | break; |
| 2063 | } |
| 2064 | ubuf += CD_FRAMESIZE_RAW * nr; |
| 2065 | nframes -= nr; |
| 2066 | lba += nr; |
| 2067 | } |
| 2068 | out: |
| 2069 | kfree(cgc.buffer); |
| 2070 | return ret; |
| 2071 | } |
| 2072 | |
| 2073 | static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, |
| 2074 | int lba, int nframes) |
| 2075 | { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 2076 | struct request_queue *q = cdi->disk->queue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | struct request *rq; |
| 2078 | struct bio *bio; |
| 2079 | unsigned int len; |
| 2080 | int nr, ret = 0; |
| 2081 | |
| 2082 | if (!q) |
| 2083 | return -ENXIO; |
| 2084 | |
Jens Axboe | dd1cab9 | 2005-06-20 14:06:01 +0200 | [diff] [blame] | 2085 | rq = blk_get_request(q, READ, GFP_KERNEL); |
| 2086 | if (!rq) |
| 2087 | return -ENOMEM; |
| 2088 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2089 | cdi->last_sense = 0; |
| 2090 | |
| 2091 | while (nframes) { |
| 2092 | nr = nframes; |
| 2093 | if (cdi->cdda_method == CDDA_BPC_SINGLE) |
| 2094 | nr = 1; |
| 2095 | if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9)) |
| 2096 | nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW; |
| 2097 | |
| 2098 | len = nr * CD_FRAMESIZE_RAW; |
| 2099 | |
Jens Axboe | dd1cab9 | 2005-06-20 14:06:01 +0200 | [diff] [blame] | 2100 | ret = blk_rq_map_user(q, rq, ubuf, len); |
| 2101 | if (ret) |
| 2102 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | rq->cmd[0] = GPCMD_READ_CD; |
| 2105 | rq->cmd[1] = 1 << 2; |
| 2106 | rq->cmd[2] = (lba >> 24) & 0xff; |
| 2107 | rq->cmd[3] = (lba >> 16) & 0xff; |
| 2108 | rq->cmd[4] = (lba >> 8) & 0xff; |
| 2109 | rq->cmd[5] = lba & 0xff; |
| 2110 | rq->cmd[6] = (nr >> 16) & 0xff; |
| 2111 | rq->cmd[7] = (nr >> 8) & 0xff; |
| 2112 | rq->cmd[8] = nr & 0xff; |
| 2113 | rq->cmd[9] = 0xf8; |
| 2114 | |
| 2115 | rq->cmd_len = 12; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2116 | rq->cmd_type = REQ_TYPE_BLOCK_PC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2117 | rq->timeout = 60 * HZ; |
| 2118 | bio = rq->bio; |
| 2119 | |
James Bottomley | 994ca9a | 2005-06-20 14:11:09 +0200 | [diff] [blame] | 2120 | if (blk_execute_rq(q, cdi->disk, rq, 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | struct request_sense *s = rq->sense; |
| 2122 | ret = -EIO; |
| 2123 | cdi->last_sense = s->sense_key; |
| 2124 | } |
| 2125 | |
Jens Axboe | 8e5cfc4 | 2006-12-19 11:12:46 +0100 | [diff] [blame] | 2126 | if (blk_rq_unmap_user(bio)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | ret = -EFAULT; |
| 2128 | |
| 2129 | if (ret) |
| 2130 | break; |
| 2131 | |
| 2132 | nframes -= nr; |
| 2133 | lba += nr; |
| 2134 | ubuf += len; |
| 2135 | } |
| 2136 | |
Jens Axboe | dd1cab9 | 2005-06-20 14:06:01 +0200 | [diff] [blame] | 2137 | blk_put_request(rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2138 | return ret; |
| 2139 | } |
| 2140 | |
| 2141 | static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, |
| 2142 | int lba, int nframes) |
| 2143 | { |
| 2144 | int ret; |
| 2145 | |
| 2146 | if (cdi->cdda_method == CDDA_OLD) |
| 2147 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); |
| 2148 | |
| 2149 | retry: |
| 2150 | /* |
| 2151 | * for anything else than success and io error, we need to retry |
| 2152 | */ |
| 2153 | ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); |
| 2154 | if (!ret || ret != -EIO) |
| 2155 | return ret; |
| 2156 | |
| 2157 | /* |
| 2158 | * I've seen drives get sense 4/8/3 udma crc errors on multi |
| 2159 | * frame dma, so drop to single frame dma if we need to |
| 2160 | */ |
| 2161 | if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { |
| 2162 | printk("cdrom: dropping to single frame dma\n"); |
| 2163 | cdi->cdda_method = CDDA_BPC_SINGLE; |
| 2164 | goto retry; |
| 2165 | } |
| 2166 | |
| 2167 | /* |
| 2168 | * so we have an io error of some sort with multi frame dma. if the |
| 2169 | * condition wasn't a hardware error |
| 2170 | * problems, not for any error |
| 2171 | */ |
| 2172 | if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) |
| 2173 | return ret; |
| 2174 | |
| 2175 | printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense); |
| 2176 | cdi->cdda_method = CDDA_OLD; |
| 2177 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); |
| 2178 | } |
| 2179 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2180 | static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, |
| 2181 | void __user *argp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2182 | { |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2183 | struct cdrom_multisession ms_info; |
| 2184 | u8 requested_format; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2185 | int ret; |
| 2186 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2187 | cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); |
| 2188 | |
| 2189 | if (!(cdi->ops->capability & CDC_MULTI_SESSION)) |
| 2190 | return -ENOSYS; |
| 2191 | |
| 2192 | if (copy_from_user(&ms_info, argp, sizeof(ms_info))) |
| 2193 | return -EFAULT; |
| 2194 | |
| 2195 | requested_format = ms_info.addr_format; |
| 2196 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) |
| 2197 | return -EINVAL; |
| 2198 | ms_info.addr_format = CDROM_LBA; |
| 2199 | |
| 2200 | ret = cdi->ops->get_last_session(cdi, &ms_info); |
| 2201 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | return ret; |
| 2203 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2204 | sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); |
| 2205 | |
| 2206 | if (copy_to_user(argp, &ms_info, sizeof(ms_info))) |
| 2207 | return -EFAULT; |
| 2208 | |
| 2209 | cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); |
| 2210 | return 0; |
| 2211 | } |
| 2212 | |
| 2213 | static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) |
| 2214 | { |
| 2215 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n"); |
| 2216 | |
| 2217 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
| 2218 | return -ENOSYS; |
| 2219 | if (cdi->use_count != 1 || keeplocked) |
| 2220 | return -EBUSY; |
| 2221 | if (CDROM_CAN(CDC_LOCK)) { |
| 2222 | int ret = cdi->ops->lock_door(cdi, 0); |
| 2223 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | return ret; |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2225 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2226 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2227 | return cdi->ops->tray_move(cdi, 1); |
| 2228 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2229 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2230 | static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) |
| 2231 | { |
| 2232 | cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2233 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2234 | if (!CDROM_CAN(CDC_CLOSE_TRAY)) |
| 2235 | return -ENOSYS; |
| 2236 | return cdi->ops->tray_move(cdi, 0); |
| 2237 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2238 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2239 | static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, |
| 2240 | unsigned long arg) |
| 2241 | { |
| 2242 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2243 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2244 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
| 2245 | return -ENOSYS; |
| 2246 | if (keeplocked) |
| 2247 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2249 | cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); |
| 2250 | if (arg) |
| 2251 | cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; |
| 2252 | return 0; |
| 2253 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2255 | static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, |
| 2256 | unsigned long arg) |
| 2257 | { |
| 2258 | struct cdrom_changer_info *info; |
| 2259 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2260 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2261 | cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2262 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2263 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
| 2264 | return -ENOSYS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2265 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2266 | /* cannot select disc or select current disc */ |
| 2267 | if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) |
| 2268 | return media_changed(cdi, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2270 | if ((unsigned int)arg >= cdi->capacity) |
| 2271 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2272 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2273 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 2274 | if (!info) |
| 2275 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2277 | ret = cdrom_read_mech_status(cdi, info); |
| 2278 | if (!ret) |
| 2279 | ret = info->slots[arg].change; |
| 2280 | kfree(info); |
| 2281 | return ret; |
| 2282 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2283 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2284 | static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, |
| 2285 | unsigned long arg) |
| 2286 | { |
| 2287 | cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2288 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2289 | /* |
| 2290 | * Options need to be in sync with capability. |
| 2291 | * Too late for that, so we have to check each one separately. |
| 2292 | */ |
| 2293 | switch (arg) { |
| 2294 | case CDO_USE_FFLAGS: |
| 2295 | case CDO_CHECK_TYPE: |
| 2296 | break; |
| 2297 | case CDO_LOCK: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2298 | if (!CDROM_CAN(CDC_LOCK)) |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2299 | return -ENOSYS; |
| 2300 | break; |
| 2301 | case 0: |
| 2302 | return cdi->options; |
| 2303 | /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ |
| 2304 | default: |
| 2305 | if (!CDROM_CAN(arg)) |
| 2306 | return -ENOSYS; |
| 2307 | } |
| 2308 | cdi->options |= (int) arg; |
| 2309 | return cdi->options; |
| 2310 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2311 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2312 | static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, |
| 2313 | unsigned long arg) |
| 2314 | { |
| 2315 | cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2317 | cdi->options &= ~(int) arg; |
| 2318 | return cdi->options; |
| 2319 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2321 | static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, |
| 2322 | unsigned long arg) |
| 2323 | { |
| 2324 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); |
| 2325 | |
| 2326 | if (!CDROM_CAN(CDC_SELECT_SPEED)) |
| 2327 | return -ENOSYS; |
| 2328 | return cdi->ops->select_speed(cdi, arg); |
| 2329 | } |
| 2330 | |
| 2331 | static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, |
| 2332 | unsigned long arg) |
| 2333 | { |
| 2334 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); |
| 2335 | |
| 2336 | if (!CDROM_CAN(CDC_SELECT_DISC)) |
| 2337 | return -ENOSYS; |
| 2338 | |
| 2339 | if (arg != CDSL_CURRENT && arg != CDSL_NONE) { |
| 2340 | if ((int)arg >= cdi->capacity) |
| 2341 | return -EINVAL; |
| 2342 | } |
| 2343 | |
| 2344 | /* |
| 2345 | * ->select_disc is a hook to allow a driver-specific way of |
| 2346 | * seleting disc. However, since there is no equivalent hook for |
| 2347 | * cdrom_slot_status this may not actually be useful... |
| 2348 | */ |
| 2349 | if (cdi->ops->select_disc) |
| 2350 | return cdi->ops->select_disc(cdi, arg); |
| 2351 | |
| 2352 | cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n"); |
| 2353 | return cdrom_select_disc(cdi, arg); |
| 2354 | } |
| 2355 | |
| 2356 | static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, |
| 2357 | struct block_device *bdev) |
| 2358 | { |
| 2359 | cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n"); |
| 2360 | |
| 2361 | if (!capable(CAP_SYS_ADMIN)) |
| 2362 | return -EACCES; |
| 2363 | if (!CDROM_CAN(CDC_RESET)) |
| 2364 | return -ENOSYS; |
Peter Zijlstra | f98393a | 2007-05-06 14:49:54 -0700 | [diff] [blame] | 2365 | invalidate_bdev(bdev); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2366 | return cdi->ops->reset(cdi); |
| 2367 | } |
| 2368 | |
| 2369 | static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, |
| 2370 | unsigned long arg) |
| 2371 | { |
| 2372 | cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl"); |
| 2373 | |
| 2374 | if (!CDROM_CAN(CDC_LOCK)) |
| 2375 | return -EDRIVE_CANT_DO_THIS; |
| 2376 | |
| 2377 | keeplocked = arg ? 1 : 0; |
| 2378 | |
| 2379 | /* |
| 2380 | * Don't unlock the door on multiple opens by default, but allow |
| 2381 | * root to do so. |
| 2382 | */ |
| 2383 | if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) |
| 2384 | return -EBUSY; |
| 2385 | return cdi->ops->lock_door(cdi, arg); |
| 2386 | } |
| 2387 | |
| 2388 | static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, |
| 2389 | unsigned long arg) |
| 2390 | { |
| 2391 | cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis"); |
| 2392 | |
| 2393 | if (!capable(CAP_SYS_ADMIN)) |
| 2394 | return -EACCES; |
| 2395 | debug = arg ? 1 : 0; |
| 2396 | return debug; |
| 2397 | } |
| 2398 | |
| 2399 | static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) |
| 2400 | { |
| 2401 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); |
| 2402 | return (cdi->ops->capability & ~cdi->mask); |
| 2403 | } |
| 2404 | |
| 2405 | /* |
| 2406 | * The following function is implemented, although very few audio |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | * discs give Universal Product Code information, which should just be |
| 2408 | * the Medium Catalog Number on the box. Note, that the way the code |
| 2409 | * is written on the CD is /not/ uniform across all discs! |
| 2410 | */ |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2411 | static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, |
| 2412 | void __user *argp) |
| 2413 | { |
| 2414 | struct cdrom_mcn mcn; |
| 2415 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2417 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2418 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2419 | if (!(cdi->ops->capability & CDC_MCN)) |
| 2420 | return -ENOSYS; |
| 2421 | ret = cdi->ops->get_mcn(cdi, &mcn); |
| 2422 | if (ret) |
| 2423 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2424 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2425 | if (copy_to_user(argp, &mcn, sizeof(mcn))) |
| 2426 | return -EFAULT; |
| 2427 | cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); |
| 2428 | return 0; |
| 2429 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2430 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2431 | static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, |
| 2432 | unsigned long arg) |
| 2433 | { |
| 2434 | cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2435 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2436 | if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) |
| 2437 | return -ENOSYS; |
| 2438 | if (!CDROM_CAN(CDC_SELECT_DISC) || |
| 2439 | (arg == CDSL_CURRENT || arg == CDSL_NONE)) |
| 2440 | return cdi->ops->drive_status(cdi, CDSL_CURRENT); |
| 2441 | if (((int)arg >= cdi->capacity)) |
| 2442 | return -EINVAL; |
| 2443 | return cdrom_slot_status(cdi, arg); |
| 2444 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2445 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2446 | /* |
| 2447 | * Ok, this is where problems start. The current interface for the |
| 2448 | * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that |
| 2449 | * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this |
| 2450 | * is often the case, it is also very common for CDs to have some tracks |
| 2451 | * with data, and some tracks with audio. Just because I feel like it, |
| 2452 | * I declare the following to be the best way to cope. If the CD has ANY |
| 2453 | * data tracks on it, it will be returned as a data CD. If it has any XA |
| 2454 | * tracks, I will return it as that. Now I could simplify this interface |
| 2455 | * by combining these returns with the above, but this more clearly |
| 2456 | * demonstrates the problem with the current interface. Too bad this |
| 2457 | * wasn't designed to use bitmasks... -Erik |
| 2458 | * |
| 2459 | * Well, now we have the option CDS_MIXED: a mixed-type CD. |
| 2460 | * User level programmers might feel the ioctl is not very useful. |
| 2461 | * ---david |
| 2462 | */ |
| 2463 | static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) |
| 2464 | { |
| 2465 | tracktype tracks; |
| 2466 | |
| 2467 | cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); |
| 2468 | |
| 2469 | cdrom_count_tracks(cdi, &tracks); |
| 2470 | if (tracks.error) |
| 2471 | return tracks.error; |
| 2472 | |
| 2473 | /* Policy mode on */ |
| 2474 | if (tracks.audio > 0) { |
| 2475 | if (!tracks.data && !tracks.cdi && !tracks.xa) |
| 2476 | return CDS_AUDIO; |
| 2477 | else |
| 2478 | return CDS_MIXED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2479 | } |
| 2480 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2481 | if (tracks.cdi > 0) |
| 2482 | return CDS_XA_2_2; |
| 2483 | if (tracks.xa > 0) |
| 2484 | return CDS_XA_2_1; |
| 2485 | if (tracks.data > 0) |
| 2486 | return CDS_DATA_1; |
| 2487 | /* Policy mode off */ |
| 2488 | |
| 2489 | cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n"); |
| 2490 | return CDS_NO_INFO; |
| 2491 | } |
| 2492 | |
| 2493 | static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) |
| 2494 | { |
| 2495 | cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); |
| 2496 | return cdi->capacity; |
| 2497 | } |
| 2498 | |
| 2499 | static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, |
| 2500 | void __user *argp) |
| 2501 | { |
| 2502 | struct cdrom_subchnl q; |
| 2503 | u8 requested, back; |
| 2504 | int ret; |
| 2505 | |
| 2506 | /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ |
| 2507 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2508 | if (copy_from_user(&q, argp, sizeof(q))) |
| 2509 | return -EFAULT; |
| 2510 | |
| 2511 | requested = q.cdsc_format; |
| 2512 | if (requested != CDROM_MSF && requested != CDROM_LBA) |
| 2513 | return -EINVAL; |
| 2514 | q.cdsc_format = CDROM_MSF; |
| 2515 | |
| 2516 | ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); |
| 2517 | if (ret) |
| 2518 | return ret; |
| 2519 | |
| 2520 | back = q.cdsc_format; /* local copy */ |
| 2521 | sanitize_format(&q.cdsc_absaddr, &back, requested); |
| 2522 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); |
| 2523 | |
| 2524 | if (copy_to_user(argp, &q, sizeof(q))) |
| 2525 | return -EFAULT; |
| 2526 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
| 2527 | return 0; |
| 2528 | } |
| 2529 | |
| 2530 | static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, |
| 2531 | void __user *argp) |
| 2532 | { |
| 2533 | struct cdrom_tochdr header; |
| 2534 | int ret; |
| 2535 | |
| 2536 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ |
| 2537 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2538 | if (copy_from_user(&header, argp, sizeof(header))) |
| 2539 | return -EFAULT; |
| 2540 | |
| 2541 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); |
| 2542 | if (ret) |
| 2543 | return ret; |
| 2544 | |
| 2545 | if (copy_to_user(argp, &header, sizeof(header))) |
| 2546 | return -EFAULT; |
| 2547 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ |
| 2548 | return 0; |
| 2549 | } |
| 2550 | |
| 2551 | static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, |
| 2552 | void __user *argp) |
| 2553 | { |
| 2554 | struct cdrom_tocentry entry; |
| 2555 | u8 requested_format; |
| 2556 | int ret; |
| 2557 | |
| 2558 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ |
| 2559 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2560 | if (copy_from_user(&entry, argp, sizeof(entry))) |
| 2561 | return -EFAULT; |
| 2562 | |
| 2563 | requested_format = entry.cdte_format; |
| 2564 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) |
| 2565 | return -EINVAL; |
| 2566 | /* make interface to low-level uniform */ |
| 2567 | entry.cdte_format = CDROM_MSF; |
| 2568 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry); |
| 2569 | if (ret) |
| 2570 | return ret; |
| 2571 | sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); |
| 2572 | |
| 2573 | if (copy_to_user(argp, &entry, sizeof(entry))) |
| 2574 | return -EFAULT; |
| 2575 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ |
| 2576 | return 0; |
| 2577 | } |
| 2578 | |
| 2579 | static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, |
| 2580 | void __user *argp) |
| 2581 | { |
| 2582 | struct cdrom_msf msf; |
| 2583 | |
| 2584 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
| 2585 | |
| 2586 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2587 | return -ENOSYS; |
| 2588 | if (copy_from_user(&msf, argp, sizeof(msf))) |
| 2589 | return -EFAULT; |
| 2590 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); |
| 2591 | } |
| 2592 | |
| 2593 | static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, |
| 2594 | void __user *argp) |
| 2595 | { |
| 2596 | struct cdrom_ti ti; |
| 2597 | int ret; |
| 2598 | |
| 2599 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); |
| 2600 | |
| 2601 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2602 | return -ENOSYS; |
| 2603 | if (copy_from_user(&ti, argp, sizeof(ti))) |
| 2604 | return -EFAULT; |
| 2605 | |
| 2606 | ret = check_for_audio_disc(cdi, cdi->ops); |
| 2607 | if (ret) |
| 2608 | return ret; |
| 2609 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); |
| 2610 | } |
| 2611 | static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, |
| 2612 | void __user *argp) |
| 2613 | { |
| 2614 | struct cdrom_volctrl volume; |
| 2615 | |
| 2616 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); |
| 2617 | |
| 2618 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2619 | return -ENOSYS; |
| 2620 | if (copy_from_user(&volume, argp, sizeof(volume))) |
| 2621 | return -EFAULT; |
| 2622 | return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); |
| 2623 | } |
| 2624 | |
| 2625 | static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, |
| 2626 | void __user *argp) |
| 2627 | { |
| 2628 | struct cdrom_volctrl volume; |
| 2629 | int ret; |
| 2630 | |
| 2631 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); |
| 2632 | |
| 2633 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2634 | return -ENOSYS; |
| 2635 | |
| 2636 | ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); |
| 2637 | if (ret) |
| 2638 | return ret; |
| 2639 | |
| 2640 | if (copy_to_user(argp, &volume, sizeof(volume))) |
| 2641 | return -EFAULT; |
| 2642 | return 0; |
| 2643 | } |
| 2644 | |
| 2645 | static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, |
| 2646 | unsigned int cmd) |
| 2647 | { |
| 2648 | int ret; |
| 2649 | |
| 2650 | cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); |
| 2651 | |
| 2652 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2653 | return -ENOSYS; |
| 2654 | ret = check_for_audio_disc(cdi, cdi->ops); |
| 2655 | if (ret) |
| 2656 | return ret; |
| 2657 | return cdi->ops->audio_ioctl(cdi, cmd, NULL); |
| 2658 | } |
| 2659 | |
| 2660 | /* |
| 2661 | * Just about every imaginable ioctl is supported in the Uniform layer |
| 2662 | * these days. |
| 2663 | * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). |
| 2664 | */ |
| 2665 | int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi, |
| 2666 | struct inode *ip, unsigned int cmd, unsigned long arg) |
| 2667 | { |
| 2668 | void __user *argp = (void __user *)arg; |
| 2669 | int ret; |
FUJITA Tomonori | 45e79a3 | 2007-07-09 12:39:20 +0200 | [diff] [blame] | 2670 | struct gendisk *disk = ip->i_bdev->bd_disk; |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2671 | |
| 2672 | /* |
| 2673 | * Try the generic SCSI command ioctl's first. |
| 2674 | */ |
FUJITA Tomonori | 45e79a3 | 2007-07-09 12:39:20 +0200 | [diff] [blame] | 2675 | ret = scsi_cmd_ioctl(file, disk->queue, disk, cmd, argp); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2676 | if (ret != -ENOTTY) |
| 2677 | return ret; |
| 2678 | |
| 2679 | switch (cmd) { |
| 2680 | case CDROMMULTISESSION: |
| 2681 | return cdrom_ioctl_multisession(cdi, argp); |
| 2682 | case CDROMEJECT: |
| 2683 | return cdrom_ioctl_eject(cdi); |
| 2684 | case CDROMCLOSETRAY: |
| 2685 | return cdrom_ioctl_closetray(cdi); |
| 2686 | case CDROMEJECT_SW: |
| 2687 | return cdrom_ioctl_eject_sw(cdi, arg); |
| 2688 | case CDROM_MEDIA_CHANGED: |
| 2689 | return cdrom_ioctl_media_changed(cdi, arg); |
| 2690 | case CDROM_SET_OPTIONS: |
| 2691 | return cdrom_ioctl_set_options(cdi, arg); |
| 2692 | case CDROM_CLEAR_OPTIONS: |
| 2693 | return cdrom_ioctl_clear_options(cdi, arg); |
| 2694 | case CDROM_SELECT_SPEED: |
| 2695 | return cdrom_ioctl_select_speed(cdi, arg); |
| 2696 | case CDROM_SELECT_DISC: |
| 2697 | return cdrom_ioctl_select_disc(cdi, arg); |
| 2698 | case CDROMRESET: |
| 2699 | return cdrom_ioctl_reset(cdi, ip->i_bdev); |
| 2700 | case CDROM_LOCKDOOR: |
| 2701 | return cdrom_ioctl_lock_door(cdi, arg); |
| 2702 | case CDROM_DEBUG: |
| 2703 | return cdrom_ioctl_debug(cdi, arg); |
| 2704 | case CDROM_GET_CAPABILITY: |
| 2705 | return cdrom_ioctl_get_capability(cdi); |
| 2706 | case CDROM_GET_MCN: |
| 2707 | return cdrom_ioctl_get_mcn(cdi, argp); |
| 2708 | case CDROM_DRIVE_STATUS: |
| 2709 | return cdrom_ioctl_drive_status(cdi, arg); |
| 2710 | case CDROM_DISC_STATUS: |
| 2711 | return cdrom_ioctl_disc_status(cdi); |
| 2712 | case CDROM_CHANGER_NSLOTS: |
| 2713 | return cdrom_ioctl_changer_nslots(cdi); |
| 2714 | } |
| 2715 | |
| 2716 | /* |
| 2717 | * Use the ioctls that are implemented through the generic_packet() |
| 2718 | * interface. this may look at bit funny, but if -ENOTTY is |
| 2719 | * returned that particular ioctl is not implemented and we |
| 2720 | * let it go through the device specific ones. |
| 2721 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2722 | if (CDROM_CAN(CDC_GENERIC_PACKET)) { |
| 2723 | ret = mmc_ioctl(cdi, cmd, arg); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2724 | if (ret != -ENOTTY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2725 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2726 | } |
| 2727 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2728 | /* |
| 2729 | * Note: most of the cdinfo() calls are commented out here, |
| 2730 | * because they fill up the sys log when CD players poll |
| 2731 | * the drive. |
| 2732 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2733 | switch (cmd) { |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2734 | case CDROMSUBCHNL: |
| 2735 | return cdrom_ioctl_get_subchnl(cdi, argp); |
| 2736 | case CDROMREADTOCHDR: |
| 2737 | return cdrom_ioctl_read_tochdr(cdi, argp); |
| 2738 | case CDROMREADTOCENTRY: |
| 2739 | return cdrom_ioctl_read_tocentry(cdi, argp); |
| 2740 | case CDROMPLAYMSF: |
| 2741 | return cdrom_ioctl_play_msf(cdi, argp); |
| 2742 | case CDROMPLAYTRKIND: |
| 2743 | return cdrom_ioctl_play_trkind(cdi, argp); |
| 2744 | case CDROMVOLCTRL: |
| 2745 | return cdrom_ioctl_volctrl(cdi, argp); |
| 2746 | case CDROMVOLREAD: |
| 2747 | return cdrom_ioctl_volread(cdi, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2748 | case CDROMSTART: |
| 2749 | case CDROMSTOP: |
| 2750 | case CDROMPAUSE: |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2751 | case CDROMRESUME: |
| 2752 | return cdrom_ioctl_audioctl(cdi, cmd); |
| 2753 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2754 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | return -ENOSYS; |
| 2756 | } |
| 2757 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2758 | /* |
| 2759 | * Required when we need to use READ_10 to issue other than 2048 block |
| 2760 | * reads |
| 2761 | */ |
| 2762 | static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) |
| 2763 | { |
| 2764 | struct cdrom_device_ops *cdo = cdi->ops; |
| 2765 | struct packet_command cgc; |
| 2766 | struct modesel_head mh; |
| 2767 | |
| 2768 | memset(&mh, 0, sizeof(mh)); |
| 2769 | mh.block_desc_length = 0x08; |
| 2770 | mh.block_length_med = (size >> 8) & 0xff; |
| 2771 | mh.block_length_lo = size & 0xff; |
| 2772 | |
| 2773 | memset(&cgc, 0, sizeof(cgc)); |
| 2774 | cgc.cmd[0] = 0x15; |
| 2775 | cgc.cmd[1] = 1 << 4; |
| 2776 | cgc.cmd[4] = 12; |
| 2777 | cgc.buflen = sizeof(mh); |
| 2778 | cgc.buffer = (char *) &mh; |
| 2779 | cgc.data_direction = CGC_DATA_WRITE; |
| 2780 | mh.block_desc_length = 0x08; |
| 2781 | mh.block_length_med = (size >> 8) & 0xff; |
| 2782 | mh.block_length_lo = size & 0xff; |
| 2783 | |
| 2784 | return cdo->generic_packet(cdi, &cgc); |
| 2785 | } |
| 2786 | |
| 2787 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, |
| 2788 | unsigned long arg) |
| 2789 | { |
| 2790 | struct cdrom_device_ops *cdo = cdi->ops; |
| 2791 | struct packet_command cgc; |
| 2792 | struct request_sense sense; |
| 2793 | unsigned char buffer[32]; |
| 2794 | int ret = 0; |
| 2795 | |
| 2796 | memset(&cgc, 0, sizeof(cgc)); |
| 2797 | |
| 2798 | /* build a unified command and queue it through |
| 2799 | cdo->generic_packet() */ |
| 2800 | switch (cmd) { |
| 2801 | case CDROMREADRAW: |
| 2802 | case CDROMREADMODE1: |
| 2803 | case CDROMREADMODE2: { |
| 2804 | struct cdrom_msf msf; |
| 2805 | int blocksize = 0, format = 0, lba; |
| 2806 | |
| 2807 | switch (cmd) { |
| 2808 | case CDROMREADRAW: |
| 2809 | blocksize = CD_FRAMESIZE_RAW; |
| 2810 | break; |
| 2811 | case CDROMREADMODE1: |
| 2812 | blocksize = CD_FRAMESIZE; |
| 2813 | format = 2; |
| 2814 | break; |
| 2815 | case CDROMREADMODE2: |
| 2816 | blocksize = CD_FRAMESIZE_RAW0; |
| 2817 | break; |
| 2818 | } |
| 2819 | IOCTL_IN(arg, struct cdrom_msf, msf); |
| 2820 | lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0); |
| 2821 | /* FIXME: we need upper bound checking, too!! */ |
| 2822 | if (lba < 0) |
| 2823 | return -EINVAL; |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 2824 | cgc.buffer = kmalloc(blocksize, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2825 | if (cgc.buffer == NULL) |
| 2826 | return -ENOMEM; |
| 2827 | memset(&sense, 0, sizeof(sense)); |
| 2828 | cgc.sense = &sense; |
| 2829 | cgc.data_direction = CGC_DATA_READ; |
| 2830 | ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize); |
| 2831 | if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) { |
| 2832 | /* |
| 2833 | * SCSI-II devices are not required to support |
| 2834 | * READ_CD, so let's try switching block size |
| 2835 | */ |
| 2836 | /* FIXME: switch back again... */ |
| 2837 | if ((ret = cdrom_switch_blocksize(cdi, blocksize))) { |
| 2838 | kfree(cgc.buffer); |
| 2839 | return ret; |
| 2840 | } |
| 2841 | cgc.sense = NULL; |
| 2842 | ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1); |
| 2843 | ret |= cdrom_switch_blocksize(cdi, blocksize); |
| 2844 | } |
| 2845 | if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize)) |
| 2846 | ret = -EFAULT; |
| 2847 | kfree(cgc.buffer); |
| 2848 | return ret; |
| 2849 | } |
| 2850 | case CDROMREADAUDIO: { |
| 2851 | struct cdrom_read_audio ra; |
| 2852 | int lba; |
| 2853 | |
| 2854 | IOCTL_IN(arg, struct cdrom_read_audio, ra); |
| 2855 | |
| 2856 | if (ra.addr_format == CDROM_MSF) |
| 2857 | lba = msf_to_lba(ra.addr.msf.minute, |
| 2858 | ra.addr.msf.second, |
| 2859 | ra.addr.msf.frame); |
| 2860 | else if (ra.addr_format == CDROM_LBA) |
| 2861 | lba = ra.addr.lba; |
| 2862 | else |
| 2863 | return -EINVAL; |
| 2864 | |
| 2865 | /* FIXME: we need upper bound checking, too!! */ |
| 2866 | if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) |
| 2867 | return -EINVAL; |
| 2868 | |
| 2869 | return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); |
| 2870 | } |
| 2871 | case CDROMSUBCHNL: { |
| 2872 | struct cdrom_subchnl q; |
| 2873 | u_char requested, back; |
| 2874 | IOCTL_IN(arg, struct cdrom_subchnl, q); |
| 2875 | requested = q.cdsc_format; |
| 2876 | if (!((requested == CDROM_MSF) || |
| 2877 | (requested == CDROM_LBA))) |
| 2878 | return -EINVAL; |
| 2879 | q.cdsc_format = CDROM_MSF; |
| 2880 | if ((ret = cdrom_read_subchannel(cdi, &q, 0))) |
| 2881 | return ret; |
| 2882 | back = q.cdsc_format; /* local copy */ |
| 2883 | sanitize_format(&q.cdsc_absaddr, &back, requested); |
| 2884 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); |
| 2885 | IOCTL_OUT(arg, struct cdrom_subchnl, q); |
| 2886 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
| 2887 | return 0; |
| 2888 | } |
| 2889 | case CDROMPLAYMSF: { |
| 2890 | struct cdrom_msf msf; |
| 2891 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
| 2892 | IOCTL_IN(arg, struct cdrom_msf, msf); |
| 2893 | cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
| 2894 | cgc.cmd[3] = msf.cdmsf_min0; |
| 2895 | cgc.cmd[4] = msf.cdmsf_sec0; |
| 2896 | cgc.cmd[5] = msf.cdmsf_frame0; |
| 2897 | cgc.cmd[6] = msf.cdmsf_min1; |
| 2898 | cgc.cmd[7] = msf.cdmsf_sec1; |
| 2899 | cgc.cmd[8] = msf.cdmsf_frame1; |
| 2900 | cgc.data_direction = CGC_DATA_NONE; |
| 2901 | return cdo->generic_packet(cdi, &cgc); |
| 2902 | } |
| 2903 | case CDROMPLAYBLK: { |
| 2904 | struct cdrom_blk blk; |
| 2905 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); |
| 2906 | IOCTL_IN(arg, struct cdrom_blk, blk); |
| 2907 | cgc.cmd[0] = GPCMD_PLAY_AUDIO_10; |
| 2908 | cgc.cmd[2] = (blk.from >> 24) & 0xff; |
| 2909 | cgc.cmd[3] = (blk.from >> 16) & 0xff; |
| 2910 | cgc.cmd[4] = (blk.from >> 8) & 0xff; |
| 2911 | cgc.cmd[5] = blk.from & 0xff; |
| 2912 | cgc.cmd[7] = (blk.len >> 8) & 0xff; |
| 2913 | cgc.cmd[8] = blk.len & 0xff; |
| 2914 | cgc.data_direction = CGC_DATA_NONE; |
| 2915 | return cdo->generic_packet(cdi, &cgc); |
| 2916 | } |
| 2917 | case CDROMVOLCTRL: |
| 2918 | case CDROMVOLREAD: { |
| 2919 | struct cdrom_volctrl volctrl; |
| 2920 | char mask[sizeof(buffer)]; |
| 2921 | unsigned short offset; |
| 2922 | |
| 2923 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n"); |
| 2924 | |
| 2925 | IOCTL_IN(arg, struct cdrom_volctrl, volctrl); |
| 2926 | |
| 2927 | cgc.buffer = buffer; |
| 2928 | cgc.buflen = 24; |
| 2929 | if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0))) |
| 2930 | return ret; |
| 2931 | |
| 2932 | /* originally the code depended on buffer[1] to determine |
| 2933 | how much data is available for transfer. buffer[1] is |
| 2934 | unfortunately ambigious and the only reliable way seem |
| 2935 | to be to simply skip over the block descriptor... */ |
Alexey Dobriyan | 56052d5 | 2005-12-01 17:10:40 -0500 | [diff] [blame] | 2936 | offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | |
| 2938 | if (offset + 16 > sizeof(buffer)) |
| 2939 | return -E2BIG; |
| 2940 | |
| 2941 | if (offset + 16 > cgc.buflen) { |
| 2942 | cgc.buflen = offset+16; |
| 2943 | ret = cdrom_mode_sense(cdi, &cgc, |
| 2944 | GPMODE_AUDIO_CTL_PAGE, 0); |
| 2945 | if (ret) |
| 2946 | return ret; |
| 2947 | } |
| 2948 | |
| 2949 | /* sanity check */ |
| 2950 | if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || |
| 2951 | buffer[offset+1] < 14) |
| 2952 | return -EINVAL; |
| 2953 | |
| 2954 | /* now we have the current volume settings. if it was only |
| 2955 | a CDROMVOLREAD, return these values */ |
| 2956 | if (cmd == CDROMVOLREAD) { |
| 2957 | volctrl.channel0 = buffer[offset+9]; |
| 2958 | volctrl.channel1 = buffer[offset+11]; |
| 2959 | volctrl.channel2 = buffer[offset+13]; |
| 2960 | volctrl.channel3 = buffer[offset+15]; |
| 2961 | IOCTL_OUT(arg, struct cdrom_volctrl, volctrl); |
| 2962 | return 0; |
| 2963 | } |
| 2964 | |
| 2965 | /* get the volume mask */ |
| 2966 | cgc.buffer = mask; |
| 2967 | if ((ret = cdrom_mode_sense(cdi, &cgc, |
| 2968 | GPMODE_AUDIO_CTL_PAGE, 1))) |
| 2969 | return ret; |
| 2970 | |
| 2971 | buffer[offset+9] = volctrl.channel0 & mask[offset+9]; |
| 2972 | buffer[offset+11] = volctrl.channel1 & mask[offset+11]; |
| 2973 | buffer[offset+13] = volctrl.channel2 & mask[offset+13]; |
| 2974 | buffer[offset+15] = volctrl.channel3 & mask[offset+15]; |
| 2975 | |
| 2976 | /* set volume */ |
| 2977 | cgc.buffer = buffer + offset - 8; |
| 2978 | memset(cgc.buffer, 0, 8); |
| 2979 | return cdrom_mode_select(cdi, &cgc); |
| 2980 | } |
| 2981 | |
| 2982 | case CDROMSTART: |
| 2983 | case CDROMSTOP: { |
| 2984 | cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); |
| 2985 | cgc.cmd[0] = GPCMD_START_STOP_UNIT; |
| 2986 | cgc.cmd[1] = 1; |
| 2987 | cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0; |
| 2988 | cgc.data_direction = CGC_DATA_NONE; |
| 2989 | return cdo->generic_packet(cdi, &cgc); |
| 2990 | } |
| 2991 | |
| 2992 | case CDROMPAUSE: |
| 2993 | case CDROMRESUME: { |
| 2994 | cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); |
| 2995 | cgc.cmd[0] = GPCMD_PAUSE_RESUME; |
| 2996 | cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; |
| 2997 | cgc.data_direction = CGC_DATA_NONE; |
| 2998 | return cdo->generic_packet(cdi, &cgc); |
| 2999 | } |
| 3000 | |
| 3001 | case DVD_READ_STRUCT: { |
| 3002 | dvd_struct *s; |
| 3003 | int size = sizeof(dvd_struct); |
| 3004 | if (!CDROM_CAN(CDC_DVD)) |
| 3005 | return -ENOSYS; |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 3006 | if ((s = kmalloc(size, GFP_KERNEL)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3007 | return -ENOMEM; |
| 3008 | cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); |
| 3009 | if (copy_from_user(s, (dvd_struct __user *)arg, size)) { |
| 3010 | kfree(s); |
| 3011 | return -EFAULT; |
| 3012 | } |
| 3013 | if ((ret = dvd_read_struct(cdi, s))) { |
| 3014 | kfree(s); |
| 3015 | return ret; |
| 3016 | } |
| 3017 | if (copy_to_user((dvd_struct __user *)arg, s, size)) |
| 3018 | ret = -EFAULT; |
| 3019 | kfree(s); |
| 3020 | return ret; |
| 3021 | } |
| 3022 | |
| 3023 | case DVD_AUTH: { |
| 3024 | dvd_authinfo ai; |
| 3025 | if (!CDROM_CAN(CDC_DVD)) |
| 3026 | return -ENOSYS; |
| 3027 | cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n"); |
| 3028 | IOCTL_IN(arg, dvd_authinfo, ai); |
| 3029 | if ((ret = dvd_do_auth (cdi, &ai))) |
| 3030 | return ret; |
| 3031 | IOCTL_OUT(arg, dvd_authinfo, ai); |
| 3032 | return 0; |
| 3033 | } |
| 3034 | |
| 3035 | case CDROM_NEXT_WRITABLE: { |
| 3036 | long next = 0; |
| 3037 | cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); |
| 3038 | if ((ret = cdrom_get_next_writable(cdi, &next))) |
| 3039 | return ret; |
| 3040 | IOCTL_OUT(arg, long, next); |
| 3041 | return 0; |
| 3042 | } |
| 3043 | case CDROM_LAST_WRITTEN: { |
| 3044 | long last = 0; |
| 3045 | cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); |
| 3046 | if ((ret = cdrom_get_last_written(cdi, &last))) |
| 3047 | return ret; |
| 3048 | IOCTL_OUT(arg, long, last); |
| 3049 | return 0; |
| 3050 | } |
| 3051 | } /* switch */ |
| 3052 | |
| 3053 | return -ENOTTY; |
| 3054 | } |
| 3055 | |
| 3056 | static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type, |
| 3057 | track_information *ti) |
| 3058 | { |
| 3059 | struct cdrom_device_ops *cdo = cdi->ops; |
| 3060 | struct packet_command cgc; |
| 3061 | int ret, buflen; |
| 3062 | |
| 3063 | init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); |
| 3064 | cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; |
| 3065 | cgc.cmd[1] = type & 3; |
| 3066 | cgc.cmd[4] = (track & 0xff00) >> 8; |
| 3067 | cgc.cmd[5] = track & 0xff; |
| 3068 | cgc.cmd[8] = 8; |
| 3069 | cgc.quiet = 1; |
| 3070 | |
| 3071 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
| 3072 | return ret; |
| 3073 | |
| 3074 | buflen = be16_to_cpu(ti->track_information_length) + |
| 3075 | sizeof(ti->track_information_length); |
| 3076 | |
| 3077 | if (buflen > sizeof(track_information)) |
| 3078 | buflen = sizeof(track_information); |
| 3079 | |
| 3080 | cgc.cmd[8] = cgc.buflen = buflen; |
| 3081 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
| 3082 | return ret; |
| 3083 | |
| 3084 | /* return actual fill size */ |
| 3085 | return buflen; |
| 3086 | } |
| 3087 | |
| 3088 | /* requires CD R/RW */ |
| 3089 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di) |
| 3090 | { |
| 3091 | struct cdrom_device_ops *cdo = cdi->ops; |
| 3092 | struct packet_command cgc; |
| 3093 | int ret, buflen; |
| 3094 | |
| 3095 | /* set up command and get the disc info */ |
| 3096 | init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); |
| 3097 | cgc.cmd[0] = GPCMD_READ_DISC_INFO; |
| 3098 | cgc.cmd[8] = cgc.buflen = 2; |
| 3099 | cgc.quiet = 1; |
| 3100 | |
| 3101 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
| 3102 | return ret; |
| 3103 | |
| 3104 | /* not all drives have the same disc_info length, so requeue |
| 3105 | * packet with the length the drive tells us it can supply |
| 3106 | */ |
| 3107 | buflen = be16_to_cpu(di->disc_information_length) + |
| 3108 | sizeof(di->disc_information_length); |
| 3109 | |
| 3110 | if (buflen > sizeof(disc_information)) |
| 3111 | buflen = sizeof(disc_information); |
| 3112 | |
| 3113 | cgc.cmd[8] = cgc.buflen = buflen; |
| 3114 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
| 3115 | return ret; |
| 3116 | |
| 3117 | /* return actual fill size */ |
| 3118 | return buflen; |
| 3119 | } |
| 3120 | |
| 3121 | /* return the last written block on the CD-R media. this is for the udf |
| 3122 | file system. */ |
| 3123 | int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) |
| 3124 | { |
| 3125 | struct cdrom_tocentry toc; |
| 3126 | disc_information di; |
| 3127 | track_information ti; |
| 3128 | __u32 last_track; |
| 3129 | int ret = -1, ti_size; |
| 3130 | |
| 3131 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) |
| 3132 | goto use_toc; |
| 3133 | |
| 3134 | ret = cdrom_get_disc_info(cdi, &di); |
| 3135 | if (ret < (int)(offsetof(typeof(di), last_track_lsb) |
| 3136 | + sizeof(di.last_track_lsb))) |
| 3137 | goto use_toc; |
| 3138 | |
| 3139 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ |
| 3140 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; |
| 3141 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
| 3142 | if (ti_size < (int)offsetof(typeof(ti), track_start)) |
| 3143 | goto use_toc; |
| 3144 | |
| 3145 | /* if this track is blank, try the previous. */ |
| 3146 | if (ti.blank) { |
| 3147 | if (last_track==1) |
| 3148 | goto use_toc; |
| 3149 | last_track--; |
| 3150 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
| 3151 | } |
| 3152 | |
| 3153 | if (ti_size < (int)(offsetof(typeof(ti), track_size) |
| 3154 | + sizeof(ti.track_size))) |
| 3155 | goto use_toc; |
| 3156 | |
| 3157 | /* if last recorded field is valid, return it. */ |
| 3158 | if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) |
| 3159 | + sizeof(ti.last_rec_address))) { |
| 3160 | *last_written = be32_to_cpu(ti.last_rec_address); |
| 3161 | } else { |
| 3162 | /* make it up instead */ |
| 3163 | *last_written = be32_to_cpu(ti.track_start) + |
| 3164 | be32_to_cpu(ti.track_size); |
| 3165 | if (ti.free_blocks) |
| 3166 | *last_written -= (be32_to_cpu(ti.free_blocks) + 7); |
| 3167 | } |
| 3168 | return 0; |
| 3169 | |
| 3170 | /* this is where we end up if the drive either can't do a |
| 3171 | GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if |
| 3172 | it doesn't give enough information or fails. then we return |
| 3173 | the toc contents. */ |
| 3174 | use_toc: |
| 3175 | toc.cdte_format = CDROM_MSF; |
| 3176 | toc.cdte_track = CDROM_LEADOUT; |
| 3177 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) |
| 3178 | return ret; |
| 3179 | sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); |
| 3180 | *last_written = toc.cdte_addr.lba; |
| 3181 | return 0; |
| 3182 | } |
| 3183 | |
| 3184 | /* return the next writable block. also for udf file system. */ |
| 3185 | static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable) |
| 3186 | { |
| 3187 | disc_information di; |
| 3188 | track_information ti; |
| 3189 | __u16 last_track; |
| 3190 | int ret, ti_size; |
| 3191 | |
| 3192 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) |
| 3193 | goto use_last_written; |
| 3194 | |
| 3195 | ret = cdrom_get_disc_info(cdi, &di); |
| 3196 | if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) |
| 3197 | + sizeof(di.last_track_lsb)) |
| 3198 | goto use_last_written; |
| 3199 | |
| 3200 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ |
| 3201 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; |
| 3202 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
| 3203 | if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) |
| 3204 | goto use_last_written; |
| 3205 | |
| 3206 | /* if this track is blank, try the previous. */ |
| 3207 | if (ti.blank) { |
| 3208 | if (last_track == 1) |
| 3209 | goto use_last_written; |
| 3210 | last_track--; |
| 3211 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
| 3212 | if (ti_size < 0) |
| 3213 | goto use_last_written; |
| 3214 | } |
| 3215 | |
| 3216 | /* if next recordable address field is valid, use it. */ |
| 3217 | if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) |
| 3218 | + sizeof(ti.next_writable)) { |
| 3219 | *next_writable = be32_to_cpu(ti.next_writable); |
| 3220 | return 0; |
| 3221 | } |
| 3222 | |
| 3223 | use_last_written: |
| 3224 | if ((ret = cdrom_get_last_written(cdi, next_writable))) { |
| 3225 | *next_writable = 0; |
| 3226 | return ret; |
| 3227 | } else { |
| 3228 | *next_writable += 7; |
| 3229 | return 0; |
| 3230 | } |
| 3231 | } |
| 3232 | |
| 3233 | EXPORT_SYMBOL(cdrom_get_last_written); |
| 3234 | EXPORT_SYMBOL(register_cdrom); |
| 3235 | EXPORT_SYMBOL(unregister_cdrom); |
| 3236 | EXPORT_SYMBOL(cdrom_open); |
| 3237 | EXPORT_SYMBOL(cdrom_release); |
| 3238 | EXPORT_SYMBOL(cdrom_ioctl); |
| 3239 | EXPORT_SYMBOL(cdrom_media_changed); |
| 3240 | EXPORT_SYMBOL(cdrom_number_of_slots); |
| 3241 | EXPORT_SYMBOL(cdrom_mode_select); |
| 3242 | EXPORT_SYMBOL(cdrom_mode_sense); |
| 3243 | EXPORT_SYMBOL(init_cdrom_command); |
| 3244 | EXPORT_SYMBOL(cdrom_get_media_event); |
| 3245 | |
| 3246 | #ifdef CONFIG_SYSCTL |
| 3247 | |
| 3248 | #define CDROM_STR_SIZE 1000 |
| 3249 | |
| 3250 | static struct cdrom_sysctl_settings { |
| 3251 | char info[CDROM_STR_SIZE]; /* general info */ |
| 3252 | int autoclose; /* close tray upon mount, etc */ |
| 3253 | int autoeject; /* eject on umount */ |
| 3254 | int debug; /* turn on debugging messages */ |
| 3255 | int lock; /* lock the door on device open */ |
| 3256 | int check; /* check media type */ |
| 3257 | } cdrom_sysctl_settings; |
| 3258 | |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3259 | enum cdrom_print_option { |
| 3260 | CTL_NAME, |
| 3261 | CTL_SPEED, |
| 3262 | CTL_SLOTS, |
| 3263 | CTL_CAPABILITY |
| 3264 | }; |
| 3265 | |
| 3266 | static int cdrom_print_info(const char *header, int val, char *info, |
| 3267 | int *pos, enum cdrom_print_option option) |
| 3268 | { |
| 3269 | const int max_size = sizeof(cdrom_sysctl_settings.info); |
| 3270 | struct cdrom_device_info *cdi; |
| 3271 | int ret; |
| 3272 | |
| 3273 | ret = scnprintf(info + *pos, max_size - *pos, header); |
| 3274 | if (!ret) |
| 3275 | return 1; |
| 3276 | |
| 3277 | *pos += ret; |
| 3278 | |
Akinobu Mita | 7fd097d | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 3279 | list_for_each_entry(cdi, &cdrom_list, list) { |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3280 | switch (option) { |
| 3281 | case CTL_NAME: |
| 3282 | ret = scnprintf(info + *pos, max_size - *pos, |
| 3283 | "\t%s", cdi->name); |
| 3284 | break; |
| 3285 | case CTL_SPEED: |
| 3286 | ret = scnprintf(info + *pos, max_size - *pos, |
| 3287 | "\t%d", cdi->speed); |
| 3288 | break; |
| 3289 | case CTL_SLOTS: |
| 3290 | ret = scnprintf(info + *pos, max_size - *pos, |
| 3291 | "\t%d", cdi->capacity); |
| 3292 | break; |
| 3293 | case CTL_CAPABILITY: |
| 3294 | ret = scnprintf(info + *pos, max_size - *pos, |
| 3295 | "\t%d", CDROM_CAN(val) != 0); |
| 3296 | break; |
| 3297 | default: |
| 3298 | printk(KERN_INFO "cdrom: invalid option%d\n", option); |
| 3299 | return 1; |
| 3300 | } |
| 3301 | if (!ret) |
| 3302 | return 1; |
| 3303 | *pos += ret; |
| 3304 | } |
| 3305 | |
| 3306 | return 0; |
| 3307 | } |
| 3308 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3309 | static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp, |
| 3310 | void __user *buffer, size_t *lenp, loff_t *ppos) |
| 3311 | { |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3312 | int pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3313 | char *info = cdrom_sysctl_settings.info; |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3314 | const int max_size = sizeof(cdrom_sysctl_settings.info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3315 | |
| 3316 | if (!*lenp || (*ppos && !write)) { |
| 3317 | *lenp = 0; |
| 3318 | return 0; |
| 3319 | } |
| 3320 | |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3321 | mutex_lock(&cdrom_mutex); |
| 3322 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3323 | pos = sprintf(info, "CD-ROM information, " VERSION "\n"); |
| 3324 | |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3325 | if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) |
| 3326 | goto done; |
| 3327 | if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) |
| 3328 | goto done; |
| 3329 | if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) |
| 3330 | goto done; |
| 3331 | if (cdrom_print_info("\nCan close tray:\t", |
| 3332 | CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) |
| 3333 | goto done; |
| 3334 | if (cdrom_print_info("\nCan open tray:\t", |
| 3335 | CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) |
| 3336 | goto done; |
| 3337 | if (cdrom_print_info("\nCan lock tray:\t", |
| 3338 | CDC_LOCK, info, &pos, CTL_CAPABILITY)) |
| 3339 | goto done; |
| 3340 | if (cdrom_print_info("\nCan change speed:", |
| 3341 | CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) |
| 3342 | goto done; |
| 3343 | if (cdrom_print_info("\nCan select disk:", |
| 3344 | CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) |
| 3345 | goto done; |
| 3346 | if (cdrom_print_info("\nCan read multisession:", |
| 3347 | CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) |
| 3348 | goto done; |
| 3349 | if (cdrom_print_info("\nCan read MCN:\t", |
| 3350 | CDC_MCN, info, &pos, CTL_CAPABILITY)) |
| 3351 | goto done; |
| 3352 | if (cdrom_print_info("\nReports media changed:", |
| 3353 | CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) |
| 3354 | goto done; |
| 3355 | if (cdrom_print_info("\nCan play audio:\t", |
| 3356 | CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) |
| 3357 | goto done; |
| 3358 | if (cdrom_print_info("\nCan write CD-R:\t", |
| 3359 | CDC_CD_R, info, &pos, CTL_CAPABILITY)) |
| 3360 | goto done; |
| 3361 | if (cdrom_print_info("\nCan write CD-RW:", |
| 3362 | CDC_CD_RW, info, &pos, CTL_CAPABILITY)) |
| 3363 | goto done; |
| 3364 | if (cdrom_print_info("\nCan read DVD:\t", |
| 3365 | CDC_DVD, info, &pos, CTL_CAPABILITY)) |
| 3366 | goto done; |
| 3367 | if (cdrom_print_info("\nCan write DVD-R:", |
| 3368 | CDC_DVD_R, info, &pos, CTL_CAPABILITY)) |
| 3369 | goto done; |
| 3370 | if (cdrom_print_info("\nCan write DVD-RAM:", |
| 3371 | CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) |
| 3372 | goto done; |
| 3373 | if (cdrom_print_info("\nCan read MRW:\t", |
| 3374 | CDC_MRW, info, &pos, CTL_CAPABILITY)) |
| 3375 | goto done; |
| 3376 | if (cdrom_print_info("\nCan write MRW:\t", |
| 3377 | CDC_MRW_W, info, &pos, CTL_CAPABILITY)) |
| 3378 | goto done; |
| 3379 | if (cdrom_print_info("\nCan write RAM:\t", |
| 3380 | CDC_RAM, info, &pos, CTL_CAPABILITY)) |
| 3381 | goto done; |
| 3382 | if (!scnprintf(info + pos, max_size - pos, "\n\n")) |
| 3383 | goto done; |
| 3384 | doit: |
| 3385 | mutex_unlock(&cdrom_mutex); |
| 3386 | return proc_dostring(ctl, write, filp, buffer, lenp, ppos); |
| 3387 | done: |
| 3388 | printk(KERN_INFO "cdrom: info buffer too small\n"); |
| 3389 | goto doit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3390 | } |
| 3391 | |
| 3392 | /* Unfortunately, per device settings are not implemented through |
| 3393 | procfs/sysctl yet. When they are, this will naturally disappear. For now |
| 3394 | just update all drives. Later this will become the template on which |
| 3395 | new registered drives will be based. */ |
| 3396 | static void cdrom_update_settings(void) |
| 3397 | { |
| 3398 | struct cdrom_device_info *cdi; |
| 3399 | |
Akinobu Mita | 032d8d9 | 2008-03-26 12:09:01 +0100 | [diff] [blame] | 3400 | mutex_lock(&cdrom_mutex); |
Akinobu Mita | 7fd097d | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 3401 | list_for_each_entry(cdi, &cdrom_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3402 | if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) |
| 3403 | cdi->options |= CDO_AUTO_CLOSE; |
| 3404 | else if (!autoclose) |
| 3405 | cdi->options &= ~CDO_AUTO_CLOSE; |
| 3406 | if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) |
| 3407 | cdi->options |= CDO_AUTO_EJECT; |
| 3408 | else if (!autoeject) |
| 3409 | cdi->options &= ~CDO_AUTO_EJECT; |
| 3410 | if (lockdoor && CDROM_CAN(CDC_LOCK)) |
| 3411 | cdi->options |= CDO_LOCK; |
| 3412 | else if (!lockdoor) |
| 3413 | cdi->options &= ~CDO_LOCK; |
| 3414 | if (check_media_type) |
| 3415 | cdi->options |= CDO_CHECK_TYPE; |
| 3416 | else |
| 3417 | cdi->options &= ~CDO_CHECK_TYPE; |
| 3418 | } |
Akinobu Mita | 032d8d9 | 2008-03-26 12:09:01 +0100 | [diff] [blame] | 3419 | mutex_unlock(&cdrom_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3420 | } |
| 3421 | |
| 3422 | static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp, |
| 3423 | void __user *buffer, size_t *lenp, loff_t *ppos) |
| 3424 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3425 | int ret; |
| 3426 | |
| 3427 | ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos); |
| 3428 | |
Eric W. Biederman | 06489b4 | 2007-10-18 03:05:28 -0700 | [diff] [blame] | 3429 | if (write) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3430 | |
| 3431 | /* we only care for 1 or 0. */ |
Eric W. Biederman | 06489b4 | 2007-10-18 03:05:28 -0700 | [diff] [blame] | 3432 | autoclose = !!cdrom_sysctl_settings.autoclose; |
| 3433 | autoeject = !!cdrom_sysctl_settings.autoeject; |
| 3434 | debug = !!cdrom_sysctl_settings.debug; |
| 3435 | lockdoor = !!cdrom_sysctl_settings.lock; |
| 3436 | check_media_type = !!cdrom_sysctl_settings.check; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3438 | /* update the option flags according to the changes. we |
| 3439 | don't have per device options through sysctl yet, |
| 3440 | but we will have and then this will disappear. */ |
| 3441 | cdrom_update_settings(); |
| 3442 | } |
| 3443 | |
| 3444 | return ret; |
| 3445 | } |
| 3446 | |
| 3447 | /* Place files in /proc/sys/dev/cdrom */ |
| 3448 | static ctl_table cdrom_table[] = { |
| 3449 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3450 | .procname = "info", |
| 3451 | .data = &cdrom_sysctl_settings.info, |
| 3452 | .maxlen = CDROM_STR_SIZE, |
| 3453 | .mode = 0444, |
| 3454 | .proc_handler = &cdrom_sysctl_info, |
| 3455 | }, |
| 3456 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3457 | .procname = "autoclose", |
| 3458 | .data = &cdrom_sysctl_settings.autoclose, |
| 3459 | .maxlen = sizeof(int), |
| 3460 | .mode = 0644, |
| 3461 | .proc_handler = &cdrom_sysctl_handler, |
| 3462 | }, |
| 3463 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3464 | .procname = "autoeject", |
| 3465 | .data = &cdrom_sysctl_settings.autoeject, |
| 3466 | .maxlen = sizeof(int), |
| 3467 | .mode = 0644, |
| 3468 | .proc_handler = &cdrom_sysctl_handler, |
| 3469 | }, |
| 3470 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3471 | .procname = "debug", |
| 3472 | .data = &cdrom_sysctl_settings.debug, |
| 3473 | .maxlen = sizeof(int), |
| 3474 | .mode = 0644, |
| 3475 | .proc_handler = &cdrom_sysctl_handler, |
| 3476 | }, |
| 3477 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3478 | .procname = "lock", |
| 3479 | .data = &cdrom_sysctl_settings.lock, |
| 3480 | .maxlen = sizeof(int), |
| 3481 | .mode = 0644, |
| 3482 | .proc_handler = &cdrom_sysctl_handler, |
| 3483 | }, |
| 3484 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3485 | .procname = "check_media", |
| 3486 | .data = &cdrom_sysctl_settings.check, |
| 3487 | .maxlen = sizeof(int), |
| 3488 | .mode = 0644, |
| 3489 | .proc_handler = &cdrom_sysctl_handler |
| 3490 | }, |
| 3491 | { .ctl_name = 0 } |
| 3492 | }; |
| 3493 | |
| 3494 | static ctl_table cdrom_cdrom_table[] = { |
| 3495 | { |
| 3496 | .ctl_name = DEV_CDROM, |
| 3497 | .procname = "cdrom", |
| 3498 | .maxlen = 0, |
| 3499 | .mode = 0555, |
| 3500 | .child = cdrom_table, |
| 3501 | }, |
| 3502 | { .ctl_name = 0 } |
| 3503 | }; |
| 3504 | |
| 3505 | /* Make sure that /proc/sys/dev is there */ |
| 3506 | static ctl_table cdrom_root_table[] = { |
| 3507 | { |
| 3508 | .ctl_name = CTL_DEV, |
| 3509 | .procname = "dev", |
| 3510 | .maxlen = 0, |
| 3511 | .mode = 0555, |
| 3512 | .child = cdrom_cdrom_table, |
| 3513 | }, |
| 3514 | { .ctl_name = 0 } |
| 3515 | }; |
| 3516 | static struct ctl_table_header *cdrom_sysctl_header; |
| 3517 | |
| 3518 | static void cdrom_sysctl_register(void) |
| 3519 | { |
| 3520 | static int initialized; |
| 3521 | |
| 3522 | if (initialized == 1) |
| 3523 | return; |
| 3524 | |
Eric W. Biederman | 0b4d414 | 2007-02-14 00:34:09 -0800 | [diff] [blame] | 3525 | cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3526 | |
| 3527 | /* set the defaults */ |
| 3528 | cdrom_sysctl_settings.autoclose = autoclose; |
| 3529 | cdrom_sysctl_settings.autoeject = autoeject; |
| 3530 | cdrom_sysctl_settings.debug = debug; |
| 3531 | cdrom_sysctl_settings.lock = lockdoor; |
| 3532 | cdrom_sysctl_settings.check = check_media_type; |
| 3533 | |
| 3534 | initialized = 1; |
| 3535 | } |
| 3536 | |
| 3537 | static void cdrom_sysctl_unregister(void) |
| 3538 | { |
| 3539 | if (cdrom_sysctl_header) |
| 3540 | unregister_sysctl_table(cdrom_sysctl_header); |
| 3541 | } |
| 3542 | |
Akinobu Mita | 17672cf | 2008-03-26 12:08:59 +0100 | [diff] [blame] | 3543 | #else /* CONFIG_SYSCTL */ |
| 3544 | |
| 3545 | static void cdrom_sysctl_register(void) |
| 3546 | { |
| 3547 | } |
| 3548 | |
| 3549 | static void cdrom_sysctl_unregister(void) |
| 3550 | { |
| 3551 | } |
| 3552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3553 | #endif /* CONFIG_SYSCTL */ |
| 3554 | |
| 3555 | static int __init cdrom_init(void) |
| 3556 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3557 | cdrom_sysctl_register(); |
Akinobu Mita | 17672cf | 2008-03-26 12:08:59 +0100 | [diff] [blame] | 3558 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3559 | return 0; |
| 3560 | } |
| 3561 | |
| 3562 | static void __exit cdrom_exit(void) |
| 3563 | { |
| 3564 | printk(KERN_INFO "Uniform CD-ROM driver unloaded\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3565 | cdrom_sysctl_unregister(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3566 | } |
| 3567 | |
| 3568 | module_init(cdrom_init); |
| 3569 | module_exit(cdrom_exit); |
| 3570 | MODULE_LICENSE("GPL"); |