drivers/ide/ide-floppy.c

   1 /*
   2  * linux/drivers/ide/ide-floppy.c       Version 0.99    Feb 24 2002
   3  *
   4  * Copyright (C) 1996 - 1999 Gadi Oxman <gadio@netvision.net.il>
   5  * Copyright (C) 2000 - 2002 Paul Bristow <paul@paulbristow.net>
   6  */
   7
   8 /*
   9  * IDE ATAPI floppy driver.
  10  *
  11  * The driver currently doesn't have any fancy features, just the bare
  12  * minimum read/write support.
  13  *
  14  * This driver supports the following IDE floppy drives:
  15  *
  16  * LS-120/240 SuperDisk
  17  * Iomega Zip 100/250
  18  * Iomega PC Card Clik!/PocketZip
  19  *
  20  * Many thanks to Lode Leroy <Lode.Leroy@www.ibase.be>, who tested so many
  21  * ALPHA patches to this driver on an EASYSTOR LS-120 ATAPI floppy drive.
  22  *
  23  * Ver 0.1   Oct 17 96   Initial test version, mostly based on ide-tape.c.
  24  * Ver 0.2   Oct 31 96   Minor changes.
  25  * Ver 0.3   Dec  2 96   Fixed error recovery bug.
  26  * Ver 0.4   Jan 26 97   Add support for the HDIO_GETGEO ioctl.
  27  * Ver 0.5   Feb 21 97   Add partitions support.
  28  *                       Use the minimum of the LBA and CHS capacities.
  29  *                       Avoid hwgroup->rq == NULL on the last irq.
  30  *                       Fix potential null dereferencing with DEBUG_LOG.
  31  * Ver 0.8   Dec  7 97   Increase irq timeout from 10 to 50 seconds.
  32  *                       Add media write-protect detection.
  33  *                       Issue START command only if TEST UNIT READY fails.
  34  *                       Add work-around for IOMEGA ZIP revision 21.D.
  35  *                       Remove idefloppy_get_capabilities().
  36  * Ver 0.9   Jul  4 99   Fix a bug which might have caused the number of
  37  *                        bytes requested on each interrupt to be zero.
  38  *                        Thanks to <shanos@es.co.nz> for pointing this out.
  39  * Ver 0.9.sv Jan 6 01   Sam Varshavchik <mrsam@courier-mta.com>
  40  *                       Implement low level formatting.  Reimplemented
  41  *                       IDEFLOPPY_CAPABILITIES_PAGE, since we need the srfp
  42  *                       bit.  My LS-120 drive barfs on
  43  *                       IDEFLOPPY_CAPABILITIES_PAGE, but maybe it's just me.
  44  *                       Compromise by not reporting a failure to get this
  45  *                       mode page.  Implemented four IOCTLs in order to
  46  *                       implement formatting.  IOCTls begin with 0x4600,
  47  *                       0x46 is 'F' as in Format.
  48  *            Jan 9 01   Userland option to select format verify.
  49  *                       Added PC_SUPPRESS_ERROR flag - some idefloppy drives
  50  *                       do not implement IDEFLOPPY_CAPABILITIES_PAGE, and
  51  *                       return a sense error.  Suppress error reporting in
  52  *                       this particular case in order to avoid spurious
  53  *                       errors in syslog.  The culprit is
  54  *                       idefloppy_get_capability_page(), so move it to
  55  *                       idefloppy_begin_format() so that it's not used
  56  *                       unless absolutely necessary.
  57  *                       If drive does not support format progress indication
  58  *                       monitor the dsc bit in the status register.
  59  *                       Also, O_NDELAY on open will allow the device to be
  60  *                       opened without a disk available.  This can be used to
  61  *                       open an unformatted disk, or get the device capacity.
  62  * Ver 0.91  Dec 11 99   Added IOMEGA Clik! drive support by
  63  *                 <paul@paulbristow.net>
  64  * Ver 0.92  Oct 22 00   Paul Bristow became official maintainer for this
  65  *                         driver.  Included Powerbook internal zip kludge.
  66  * Ver 0.93  Oct 24 00   Fixed bugs for Clik! drive
  67  *                        no disk on insert and disk change now works
  68  * Ver 0.94  Oct 27 00   Tidied up to remove strstr(Clik) everywhere
  69  * Ver 0.95  Nov  7 00   Brought across to kernel 2.4
  70  * Ver 0.96  Jan  7 01   Actually in line with release version of 2.4.0
  71  *                       including set_bit patch from Rusty Russell
  72  * Ver 0.97  Jul 22 01   Merge 0.91-0.96 onto 0.9.sv for ac series
  73  * Ver 0.97.sv Aug 3 01  Backported from 2.4.7-ac3
  74  * Ver 0.98  Oct 26 01   Split idefloppy_transfer_pc into two pieces to
  75  *                        fix a lost interrupt problem. It appears the busy
  76  *                        bit was being deasserted by my IOMEGA ATAPI ZIP 100
  77  *                        drive before the drive was actually ready.
  78  * Ver 0.98a Oct 29 01   Expose delay value so we can play.
  79  * Ver 0.99  Feb 24 02   Remove duplicate code, modify clik! detection code
  80  *                        to support new PocketZip drives
  81  */
  82
  83 #define IDEFLOPPY_VERSION "0.99.newide"
  84
  85 #include <linux/module.h>
  86 #include <linux/types.h>
  87 #include <linux/string.h>
  88 #include <linux/kernel.h>
  89 #include <linux/delay.h>
  90 #include <linux/timer.h>
  91 #include <linux/mm.h>
  92 #include <linux/interrupt.h>
  93 #include <linux/major.h>
  94 #include <linux/errno.h>
  95 #include <linux/genhd.h>
  96 #include <linux/slab.h>
  97 #include <linux/cdrom.h>
  98 #include <linux/ide.h>
  99 #include <linux/bitops.h>
 100 #include <linux/mutex.h>
 101
 102 #include <asm/byteorder.h>
 103 #include <asm/irq.h>
 104 #include <asm/uaccess.h>
 105 #include <asm/io.h>
 106 #include <asm/unaligned.h>
 107
 108 /*
 109  *      The following are used to debug the driver.
 110  */
 111 #define IDEFLOPPY_DEBUG_LOG             0
 112 #define IDEFLOPPY_DEBUG_INFO            0
 113 #define IDEFLOPPY_DEBUG_BUGS            1
 114
 115 /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
 116 #define IDEFLOPPY_DEBUG( fmt, args... )
 117
 118 #if IDEFLOPPY_DEBUG_LOG
 119 #define debug_log printk
 120 #else
 121 #define debug_log(fmt, args... ) do {} while(0)
 122 #endif
 123
 124
 125 /*
 126  *      Some drives require a longer irq timeout.
 127  */
 128 #define IDEFLOPPY_WAIT_CMD              (5 * WAIT_CMD)
 129
 130 /*
 131  *      After each failed packet command we issue a request sense command
 132  *      and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times.
 133  */
 134 #define IDEFLOPPY_MAX_PC_RETRIES        3
 135
 136 /*
 137  *      With each packet command, we allocate a buffer of
 138  *      IDEFLOPPY_PC_BUFFER_SIZE bytes.
 139  */
 140 #define IDEFLOPPY_PC_BUFFER_SIZE        256
 141
 142 /*
 143  *      In various places in the driver, we need to allocate storage
 144  *      for packet commands and requests, which will remain valid while
 145  *      we leave the driver to wait for an interrupt or a timeout event.
 146  */
 147 #define IDEFLOPPY_PC_STACK              (10 + IDEFLOPPY_MAX_PC_RETRIES)
 148
 149 /*
 150  *      Our view of a packet command.
 151  */
 152 typedef struct idefloppy_packet_command_s {
 153         u8 c[12];                               /* Actual packet bytes */
 154         int retries;                            /* On each retry, we increment retries */
 155         int error;                              /* Error code */
 156         int request_transfer;                   /* Bytes to transfer */
 157         int actually_transferred;               /* Bytes actually transferred */
 158         int buffer_size;                        /* Size of our data buffer */
 159         int b_count;                            /* Missing/Available data on the current buffer */
 160         struct request *rq;                     /* The corresponding request */
 161         u8 *buffer;                             /* Data buffer */
 162         u8 *current_position;                   /* Pointer into the above buffer */
 163         void (*callback) (ide_drive_t *);       /* Called when this packet command is completed */
 164         u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */
 165         unsigned long flags;                    /* Status/Action bit flags: long for set_bit */
 166 } idefloppy_pc_t;
 167
 168 /*
 169  *      Packet command flag bits.
 170  */
 171 #define PC_ABORT                        0       /* Set when an error is considered normal - We won't retry */
 172 #define PC_DMA_RECOMMENDED              2       /* 1 when we prefer to use DMA if possible */
 173 #define PC_DMA_IN_PROGRESS              3       /* 1 while DMA in progress */
 174 #define PC_DMA_ERROR                    4       /* 1 when encountered problem during DMA */
 175 #define PC_WRITING                      5       /* Data direction */
 176
 177 #define PC_SUPPRESS_ERROR               6       /* Suppress error reporting */
 178
 179 /*
 180  *      Removable Block Access Capabilities Page
 181  */
 182 typedef struct {
 183 #if defined(__LITTLE_ENDIAN_BITFIELD)
 184         unsigned        page_code       :6;     /* Page code - Should be 0x1b */
 185         unsigned        reserved1_6     :1;     /* Reserved */
 186         unsigned        ps              :1;     /* Should be 0 */
 187 #elif defined(__BIG_ENDIAN_BITFIELD)
 188         unsigned        ps              :1;     /* Should be 0 */
 189         unsigned        reserved1_6     :1;     /* Reserved */
 190         unsigned        page_code       :6;     /* Page code - Should be 0x1b */
 191 #else
 192 #error "Bitfield endianness not defined! Check your byteorder.h"
 193 #endif
 194         u8              page_length;            /* Page Length - Should be 0xa */
 195 #if defined(__LITTLE_ENDIAN_BITFIELD)
 196         unsigned        reserved2       :6;
 197         unsigned        srfp            :1;     /* Supports reporting progress of format */
 198         unsigned        sflp            :1;     /* System floppy type device */
 199         unsigned        tlun            :3;     /* Total logical units supported by the device */
 200         unsigned        reserved3       :3;
 201         unsigned        sml             :1;     /* Single / Multiple lun supported */
 202         unsigned        ncd             :1;     /* Non cd optical device */
 203 #elif defined(__BIG_ENDIAN_BITFIELD)
 204         unsigned        sflp            :1;     /* System floppy type device */
 205         unsigned        srfp            :1;     /* Supports reporting progress of format */
 206         unsigned        reserved2       :6;
 207         unsigned        ncd             :1;     /* Non cd optical device */
 208         unsigned        sml             :1;     /* Single / Multiple lun supported */
 209         unsigned        reserved3       :3;
 210         unsigned        tlun            :3;     /* Total logical units supported by the device */
 211 #else
 212 #error "Bitfield endianness not defined! Check your byteorder.h"
 213 #endif
 214         u8              reserved[8];
 215 } idefloppy_capabilities_page_t;
 216
 217 /*
 218  *      Flexible disk page.
 219  */
 220 typedef struct {
 221 #if defined(__LITTLE_ENDIAN_BITFIELD)
 222         unsigned        page_code       :6;     /* Page code - Should be 0x5 */
 223         unsigned        reserved1_6     :1;     /* Reserved */
 224         unsigned        ps              :1;     /* The device is capable of saving the page */
 225 #elif defined(__BIG_ENDIAN_BITFIELD)
 226         unsigned        ps              :1;     /* The device is capable of saving the page */
 227         unsigned        reserved1_6     :1;     /* Reserved */
 228         unsigned        page_code       :6;     /* Page code - Should be 0x5 */
 229 #else
 230 #error "Bitfield endianness not defined! Check your byteorder.h"
 231 #endif
 232         u8              page_length;            /* Page Length - Should be 0x1e */
 233         u16             transfer_rate;          /* In kilobits per second */
 234         u8              heads, sectors;         /* Number of heads, Number of sectors per track */
 235         u16             sector_size;            /* Byes per sector */
 236         u16             cyls;                   /* Number of cylinders */
 237         u8              reserved10[10];
 238         u8              motor_delay;            /* Motor off delay */
 239         u8              reserved21[7];
 240         u16             rpm;                    /* Rotations per minute */
 241         u8              reserved30[2];
 242 } idefloppy_flexible_disk_page_t;
 243
 244 /*
 245  *      Format capacity
 246  */
 247 typedef struct {
 248         u8              reserved[3];
 249         u8              length;                 /* Length of the following descriptors in bytes */
 250 } idefloppy_capacity_header_t;
 251
 252 typedef struct {
 253         u32             blocks;                 /* Number of blocks */
 254 #if defined(__LITTLE_ENDIAN_BITFIELD)
 255         unsigned        dc              :2;     /* Descriptor Code */
 256         unsigned        reserved        :6;
 257 #elif defined(__BIG_ENDIAN_BITFIELD)
 258         unsigned        reserved        :6;
 259         unsigned        dc              :2;     /* Descriptor Code */
 260 #else
 261 #error "Bitfield endianness not defined! Check your byteorder.h"
 262 #endif
 263         u8              length_msb;             /* Block Length (MSB)*/
 264         u16             length;                 /* Block Length */
 265 } idefloppy_capacity_descriptor_t;
 266
 267 #define CAPACITY_INVALID        0x00
 268 #define CAPACITY_UNFORMATTED    0x01
 269 #define CAPACITY_CURRENT        0x02
 270 #define CAPACITY_NO_CARTRIDGE   0x03
 271
 272 /*
 273  *      Most of our global data which we need to save even as we leave the
 274  *      driver due to an interrupt or a timer event is stored in a variable
 275  *      of type idefloppy_floppy_t, defined below.
 276  */
 277 typedef struct ide_floppy_obj {
 278         ide_drive_t     *drive;
 279         ide_driver_t    *driver;
 280         struct gendisk  *disk;
 281         struct kref     kref;
 282         unsigned int    openers;        /* protected by BKL for now */
 283
 284         /* Current packet command */
 285         idefloppy_pc_t *pc;
 286         /* Last failed packet command */
 287         idefloppy_pc_t *failed_pc;
 288         /* Packet command stack */
 289         idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK];
 290         /* Next free packet command storage space */
 291         int pc_stack_index;
 292         struct request rq_stack[IDEFLOPPY_PC_STACK];
 293         /* We implement a circular array */
 294         int rq_stack_index;
 295
 296         /*
 297          *      Last error information
 298          */
 299         u8 sense_key, asc, ascq;
 300         /* delay this long before sending packet command */
 301         u8 ticks;
 302         int progress_indication;
 303
 304         /*
 305          *      Device information
 306          */
 307         /* Current format */
 308         int blocks, block_size, bs_factor;
 309         /* Last format capacity */
 310         idefloppy_capacity_descriptor_t capacity;
 311         /* Copy of the flexible disk page */
 312         idefloppy_flexible_disk_page_t flexible_disk_page;
 313         /* Write protect */
 314         int wp;
 315         /* Supports format progress report */
 316         int srfp;
 317         /* Status/Action flags */
 318         unsigned long flags;
 319 } idefloppy_floppy_t;
 320
 321 #define IDEFLOPPY_TICKS_DELAY   HZ/20   /* default delay for ZIP 100 (50ms) */
 322
 323 /*
 324  *      Floppy flag bits values.
 325  */
 326 #define IDEFLOPPY_DRQ_INTERRUPT         0       /* DRQ interrupt device */
 327 #define IDEFLOPPY_MEDIA_CHANGED         1       /* Media may have changed */
 328 #define IDEFLOPPY_USE_READ12            2       /* Use READ12/WRITE12 or READ10/WRITE10 */
 329 #define IDEFLOPPY_FORMAT_IN_PROGRESS    3       /* Format in progress */
 330 #define IDEFLOPPY_CLIK_DRIVE            4       /* Avoid commands not supported in Clik drive */
 331 #define IDEFLOPPY_ZIP_DRIVE             5       /* Requires BH algorithm for packets */
 332
 333 /*
 334  *      ATAPI floppy drive packet commands
 335  */
 336 #define IDEFLOPPY_FORMAT_UNIT_CMD       0x04
 337 #define IDEFLOPPY_INQUIRY_CMD           0x12
 338 #define IDEFLOPPY_MODE_SELECT_CMD       0x55
 339 #define IDEFLOPPY_MODE_SENSE_CMD        0x5a
 340 #define IDEFLOPPY_READ10_CMD            0x28
 341 #define IDEFLOPPY_READ12_CMD            0xa8
 342 #define IDEFLOPPY_READ_CAPACITY_CMD     0x23
 343 #define IDEFLOPPY_REQUEST_SENSE_CMD     0x03
 344 #define IDEFLOPPY_PREVENT_REMOVAL_CMD   0x1e
 345 #define IDEFLOPPY_SEEK_CMD              0x2b
 346 #define IDEFLOPPY_START_STOP_CMD        0x1b
 347 #define IDEFLOPPY_TEST_UNIT_READY_CMD   0x00
 348 #define IDEFLOPPY_VERIFY_CMD            0x2f
 349 #define IDEFLOPPY_WRITE10_CMD           0x2a
 350 #define IDEFLOPPY_WRITE12_CMD           0xaa
 351 #define IDEFLOPPY_WRITE_VERIFY_CMD      0x2e
 352
 353 /*
 354  *      Defines for the mode sense command
 355  */
 356 #define MODE_SENSE_CURRENT              0x00
 357 #define MODE_SENSE_CHANGEABLE           0x01
 358 #define MODE_SENSE_DEFAULT              0x02
 359 #define MODE_SENSE_SAVED                0x03
 360
 361 /*
 362  *      IOCTLs used in low-level formatting.
 363  */
 364
 365 #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED        0x4600
 366 #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY     0x4601
 367 #define IDEFLOPPY_IOCTL_FORMAT_START            0x4602
 368 #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS     0x4603
 369
 370 #if 0
 371 /*
 372  *      Special requests for our block device strategy routine.
 373  */
 374 #define IDEFLOPPY_FIRST_RQ      90
 375
 376 /*
 377  *      IDEFLOPPY_PC_RQ is used to queue a packet command in the request queue.
 378  */
 379 #define IDEFLOPPY_PC_RQ         90
 380
 381 #define IDEFLOPPY_LAST_RQ       90
 382
 383 /*
 384  *      A macro which can be used to check if a given request command
 385  *      originated in the driver or in the buffer cache layer.
 386  */
 387 #define IDEFLOPPY_RQ_CMD(cmd)   ((cmd >= IDEFLOPPY_FIRST_RQ) && (cmd <= IDEFLOPPY_LAST_RQ))
 388
 389 #endif
 390
 391 /*
 392  *      Error codes which are returned in rq->errors to the higher part
 393  *      of the driver.
 394  */
 395 #define IDEFLOPPY_ERROR_GENERAL         101
 396
 397 /*
 398  *      The following is used to format the general configuration word of
 399  *      the ATAPI IDENTIFY DEVICE command.
 400  */
 401 struct idefloppy_id_gcw {
 402 #if defined(__LITTLE_ENDIAN_BITFIELD)
 403         unsigned packet_size            :2;     /* Packet Size */
 404         unsigned reserved234            :3;     /* Reserved */
 405         unsigned drq_type               :2;     /* Command packet DRQ type */
 406         unsigned removable              :1;     /* Removable media */
 407         unsigned device_type            :5;     /* Device type */
 408         unsigned reserved13             :1;     /* Reserved */
 409         unsigned protocol               :2;     /* Protocol type */
 410 #elif defined(__BIG_ENDIAN_BITFIELD)
 411         unsigned protocol               :2;     /* Protocol type */
 412         unsigned reserved13             :1;     /* Reserved */
 413         unsigned device_type            :5;     /* Device type */
 414         unsigned removable              :1;     /* Removable media */
 415         unsigned drq_type               :2;     /* Command packet DRQ type */
 416         unsigned reserved234            :3;     /* Reserved */
 417         unsigned packet_size            :2;     /* Packet Size */
 418 #else
 419 #error "Bitfield endianness not defined! Check your byteorder.h"
 420 #endif
 421 };
 422
 423 /*
 424  *      INQUIRY packet command - Data Format
 425  */
 426 typedef struct {
 427 #if defined(__LITTLE_ENDIAN_BITFIELD)
 428         unsigned        device_type     :5;     /* Peripheral Device Type */
 429         unsigned        reserved0_765   :3;     /* Peripheral Qualifier - Reserved */
 430         unsigned        reserved1_6t0   :7;     /* Reserved */
 431         unsigned        rmb             :1;     /* Removable Medium Bit */
 432         unsigned        ansi_version    :3;     /* ANSI Version */
 433         unsigned        ecma_version    :3;     /* ECMA Version */
 434         unsigned        iso_version     :2;     /* ISO Version */
 435         unsigned        response_format :4;     /* Response Data Format */
 436         unsigned        reserved3_45    :2;     /* Reserved */
 437         unsigned        reserved3_6     :1;     /* TrmIOP - Reserved */
 438         unsigned        reserved3_7     :1;     /* AENC - Reserved */
 439 #elif defined(__BIG_ENDIAN_BITFIELD)
 440         unsigned        reserved0_765   :3;     /* Peripheral Qualifier - Reserved */
 441         unsigned        device_type     :5;     /* Peripheral Device Type */
 442         unsigned        rmb             :1;     /* Removable Medium Bit */
 443         unsigned        reserved1_6t0   :7;     /* Reserved */
 444         unsigned        iso_version     :2;     /* ISO Version */
 445         unsigned        ecma_version    :3;     /* ECMA Version */
 446         unsigned        ansi_version    :3;     /* ANSI Version */
 447         unsigned        reserved3_7     :1;     /* AENC - Reserved */
 448         unsigned        reserved3_6     :1;     /* TrmIOP - Reserved */
 449         unsigned        reserved3_45    :2;     /* Reserved */
 450         unsigned        response_format :4;     /* Response Data Format */
 451 #else
 452 #error "Bitfield endianness not defined! Check your byteorder.h"
 453 #endif
 454         u8              additional_length;      /* Additional Length (total_length-4) */
 455         u8              rsv5, rsv6, rsv7;       /* Reserved */
 456         u8              vendor_id[8];           /* Vendor Identification */
 457         u8              product_id[16];         /* Product Identification */
 458         u8              revision_level[4];      /* Revision Level */
 459         u8              vendor_specific[20];    /* Vendor Specific - Optional */
 460         u8              reserved56t95[40];      /* Reserved - Optional */
 461                                                 /* Additional information may be returned */
 462 } idefloppy_inquiry_result_t;
 463
 464 /*
 465  *      REQUEST SENSE packet command result - Data Format.
 466  */
 467 typedef struct {
 468 #if defined(__LITTLE_ENDIAN_BITFIELD)
 469         unsigned        error_code      :7;     /* Current error (0x70) */
 470         unsigned        valid           :1;     /* The information field conforms to SFF-8070i */
 471         u8              reserved1       :8;     /* Reserved */
 472         unsigned        sense_key       :4;     /* Sense Key */
 473         unsigned        reserved2_4     :1;     /* Reserved */
 474         unsigned        ili             :1;     /* Incorrect Length Indicator */
 475         unsigned        reserved2_67    :2;
 476 #elif defined(__BIG_ENDIAN_BITFIELD)
 477         unsigned        valid           :1;     /* The information field conforms to SFF-8070i */
 478         unsigned        error_code      :7;     /* Current error (0x70) */
 479         u8              reserved1       :8;     /* Reserved */
 480         unsigned        reserved2_67    :2;
 481         unsigned        ili             :1;     /* Incorrect Length Indicator */
 482         unsigned        reserved2_4     :1;     /* Reserved */
 483         unsigned        sense_key       :4;     /* Sense Key */
 484 #else
 485 #error "Bitfield endianness not defined! Check your byteorder.h"
 486 #endif
 487         u32             information __attribute__ ((packed));
 488         u8              asl;                    /* Additional sense length (n-7) */
 489         u32             command_specific;       /* Additional command specific information */
 490         u8              asc;                    /* Additional Sense Code */
 491         u8              ascq;                   /* Additional Sense Code Qualifier */
 492         u8              replaceable_unit_code;  /* Field Replaceable Unit Code */
 493         u8              sksv[3];
 494         u8              pad[2];                 /* Padding to 20 bytes */
 495 } idefloppy_request_sense_result_t;
 496
 497 /*
 498  *      Pages of the SELECT SENSE / MODE SENSE packet commands.
 499  */
 500 #define IDEFLOPPY_CAPABILITIES_PAGE     0x1b
 501 #define IDEFLOPPY_FLEXIBLE_DISK_PAGE    0x05
 502
 503 /*
 504  *      Mode Parameter Header for the MODE SENSE packet command
 505  */
 506 typedef struct {
 507         u16             mode_data_length;       /* Length of the following data transfer */
 508         u8              medium_type;            /* Medium Type */
 509 #if defined(__LITTLE_ENDIAN_BITFIELD)
 510         unsigned        reserved3       :7;
 511         unsigned        wp              :1;     /* Write protect */
 512 #elif defined(__BIG_ENDIAN_BITFIELD)
 513         unsigned        wp              :1;     /* Write protect */
 514         unsigned        reserved3       :7;
 515 #else
 516 #error "Bitfield endianness not defined! Check your byteorder.h"
 517 #endif
 518         u8              reserved[4];
 519 } idefloppy_mode_parameter_header_t;
 520
 521 static DEFINE_MUTEX(idefloppy_ref_mutex);
 522
 523 #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
 524
 525 #define ide_floppy_g(disk) \
 526         container_of((disk)->private_data, struct ide_floppy_obj, driver)
 527
 528 static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk)
 529 {
 530         struct ide_floppy_obj *floppy = NULL;
 531
 532         mutex_lock(&idefloppy_ref_mutex);
 533         floppy = ide_floppy_g(disk);
 534         if (floppy)
 535                 kref_get(&floppy->kref);
 536         mutex_unlock(&idefloppy_ref_mutex);
 537         return floppy;
 538 }
 539
 540 static void ide_floppy_release(struct kref *);
 541
 542 static void ide_floppy_put(struct ide_floppy_obj *floppy)
 543 {
 544         mutex_lock(&idefloppy_ref_mutex);
 545         kref_put(&floppy->kref, ide_floppy_release);
 546         mutex_unlock(&idefloppy_ref_mutex);
 547 }
 548
 549 /*
 550  *      Too bad. The drive wants to send us data which we are not ready to accept.
 551  *      Just throw it away.
 552  */
 553 static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount)
 554 {
 555         while (bcount--)
 556                 (void) HWIF(drive)->INB(IDE_DATA_REG);
 557 }
 558
 559 #if IDEFLOPPY_DEBUG_BUGS
 560 static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount)
 561 {
 562         while (bcount--)
 563                 HWIF(drive)->OUTB(0, IDE_DATA_REG);
 564 }
 565 #endif /* IDEFLOPPY_DEBUG_BUGS */
 566
 567
 568 /*
 569  *      idefloppy_do_end_request is used to finish servicing a request.
 570  *
 571  *      For read/write requests, we will call ide_end_request to pass to the
 572  *      next buffer.
 573  */
 574 static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs)
 575 {
 576         idefloppy_floppy_t *floppy = drive->driver_data;
 577         struct request *rq = HWGROUP(drive)->rq;
 578         int error;
 579
 580         debug_log(KERN_INFO "Reached idefloppy_end_request\n");
 581
 582         switch (uptodate) {
 583                 case 0: error = IDEFLOPPY_ERROR_GENERAL; break;
 584                 case 1: error = 0; break;
 585                 default: error = uptodate;
 586         }
 587         if (error)
 588                 floppy->failed_pc = NULL;
 589         /* Why does this happen? */
 590         if (!rq)
 591                 return 0;
 592         if (!blk_special_request(rq)) {
 593                 /* our real local end request function */
 594                 ide_end_request(drive, uptodate, nsecs);
 595                 return 0;
 596         }
 597         rq->errors = error;
 598         /* fixme: need to move this local also */
 599         ide_end_drive_cmd(drive, 0, 0);
 600         return 0;
 601 }
 602
 603 static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount)
 604 {
 605         struct request *rq = pc->rq;
 606         struct bio_vec *bvec;
 607         struct bio *bio;
 608         unsigned long flags;
 609         char *data;
 610         int count, i, done = 0;
 611
 612         rq_for_each_bio(bio, rq) {
 613                 bio_for_each_segment(bvec, bio, i) {
 614                         if (!bcount)
 615                                 break;
 616
 617                         count = min(bvec->bv_len, bcount);
 618
 619                         data = bvec_kmap_irq(bvec, &flags);
 620                         drive->hwif->atapi_input_bytes(drive, data, count);
 621                         bvec_kunmap_irq(data, &flags);
 622
 623                         bcount -= count;
 624                         pc->b_count += count;
 625                         done += count;
 626                 }
 627         }
 628
 629         idefloppy_do_end_request(drive, 1, done >> 9);
 630
 631         if (bcount) {
 632                 printk(KERN_ERR "%s: leftover data in idefloppy_input_buffers, bcount == %d\n", drive->name, bcount);
 633                 idefloppy_discard_data(drive, bcount);
 634         }
 635 }
 636
 637 static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount)
 638 {
 639         struct request *rq = pc->rq;
 640         struct bio *bio;
 641         struct bio_vec *bvec;
 642         unsigned long flags;
 643         int count, i, done = 0;
 644         char *data;
 645
 646         rq_for_each_bio(bio, rq) {
 647                 bio_for_each_segment(bvec, bio, i) {
 648                         if (!bcount)
 649                                 break;
 650
 651                         count = min(bvec->bv_len, bcount);
 652
 653                         data = bvec_kmap_irq(bvec, &flags);
 654                         drive->hwif->atapi_output_bytes(drive, data, count);
 655                         bvec_kunmap_irq(data, &flags);
 656
 657                         bcount -= count;
 658                         pc->b_count += count;
 659                         done += count;
 660                 }
 661         }
 662
 663         idefloppy_do_end_request(drive, 1, done >> 9);
 664
 665 #if IDEFLOPPY_DEBUG_BUGS
 666         if (bcount) {
 667                 printk(KERN_ERR "%s: leftover data in idefloppy_output_buffers, bcount == %d\n", drive->name, bcount);
 668                 idefloppy_write_zeros(drive, bcount);
 669         }
 670 #endif
 671 }
 672
 673 static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc)
 674 {
 675         struct request *rq = pc->rq;
 676         struct bio *bio = rq->bio;
 677
 678         while ((bio = rq->bio) != NULL)
 679                 idefloppy_do_end_request(drive, 1, 0);
 680 }
 681
 682 /*
 683  *      idefloppy_queue_pc_head generates a new packet command request in front
 684  *      of the request queue, before the current request, so that it will be
 685  *      processed immediately, on the next pass through the driver.
 686  */
 687 static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq)
 688 {
 689         struct ide_floppy_obj *floppy = drive->driver_data;
 690
 691         ide_init_drive_cmd(rq);
 692         rq->buffer = (char *) pc;
 693         rq->cmd_type = REQ_TYPE_SPECIAL;
 694         rq->rq_disk = floppy->disk;
 695         (void) ide_do_drive_cmd(drive, rq, ide_preempt);
 696 }
 697
 698 static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive)
 699 {
 700         idefloppy_floppy_t *floppy = drive->driver_data;
 701
 702         if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK)
 703                 floppy->pc_stack_index=0;
 704         return (&floppy->pc_stack[floppy->pc_stack_index++]);
 705 }
 706
 707 static struct request *idefloppy_next_rq_storage (ide_drive_t *drive)
 708 {
 709         idefloppy_floppy_t *floppy = drive->driver_data;
 710
 711         if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK)
 712                 floppy->rq_stack_index = 0;
 713         return (&floppy->rq_stack[floppy->rq_stack_index++]);
 714 }
 715
 716 /*
 717  *      idefloppy_analyze_error is called on each failed packet command retry
 718  *      to analyze the request sense.
 719  */
 720 static void idefloppy_analyze_error (ide_drive_t *drive,idefloppy_request_sense_result_t *result)
 721 {
 722         idefloppy_floppy_t *floppy = drive->driver_data;
 723
 724         floppy->sense_key = result->sense_key;
 725         floppy->asc = result->asc;
 726         floppy->ascq = result->ascq;
 727         floppy->progress_indication = result->sksv[0] & 0x80 ?
 728                 (u16)get_unaligned((u16 *)(result->sksv+1)):0x10000;
 729         if (floppy->failed_pc)
 730                 debug_log(KERN_INFO "ide-floppy: pc = %x, sense key = %x, "
 731                         "asc = %x, ascq = %x\n", floppy->failed_pc->c[0],
 732                         result->sense_key, result->asc, result->ascq);
 733         else
 734                 debug_log(KERN_INFO "ide-floppy: sense key = %x, asc = %x, "
 735                         "ascq = %x\n", result->sense_key,
 736                         result->asc, result->ascq);
 737 }
 738
 739 static void idefloppy_request_sense_callback (ide_drive_t *drive)
 740 {
 741         idefloppy_floppy_t *floppy = drive->driver_data;
 742
 743         debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__);
 744
 745         if (!floppy->pc->error) {
 746                 idefloppy_analyze_error(drive,(idefloppy_request_sense_result_t *) floppy->pc->buffer);
 747                 idefloppy_do_end_request(drive, 1, 0);
 748         } else {
 749                 printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting request!\n");
 750                 idefloppy_do_end_request(drive, 0, 0);
 751         }
 752 }
 753
 754 /*
 755  *      General packet command callback function.
 756  */
 757 static void idefloppy_pc_callback (ide_drive_t *drive)
 758 {
 759         idefloppy_floppy_t *floppy = drive->driver_data;
 760
 761         debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__);
 762
 763         idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0);
 764 }
 765
 766 /*
 767  *      idefloppy_init_pc initializes a packet command.
 768  */
 769 static void idefloppy_init_pc (idefloppy_pc_t *pc)
 770 {
 771         memset(pc->c, 0, 12);
 772         pc->retries = 0;
 773         pc->flags = 0;
 774         pc->request_transfer = 0;
 775         pc->buffer = pc->pc_buffer;
 776         pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE;
 777         pc->callback = &idefloppy_pc_callback;
 778 }
 779
 780 static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc)
 781 {
 782         idefloppy_init_pc(pc);
 783         pc->c[0] = IDEFLOPPY_REQUEST_SENSE_CMD;
 784         pc->c[4] = 255;
 785         pc->request_transfer = 18;
 786         pc->callback = &idefloppy_request_sense_callback;
 787 }
 788
 789 /*
 790  *      idefloppy_retry_pc is called when an error was detected during the
 791  *      last packet command. We queue a request sense packet command in
 792  *      the head of the request list.
 793  */
 794 static void idefloppy_retry_pc (ide_drive_t *drive)
 795 {
 796         idefloppy_pc_t *pc;
 797         struct request *rq;
 798         atapi_error_t error;
 799
 800         error.all = HWIF(drive)->INB(IDE_ERROR_REG);
 801         pc = idefloppy_next_pc_storage(drive);
 802         rq = idefloppy_next_rq_storage(drive);
 803         idefloppy_create_request_sense_cmd(pc);
 804         idefloppy_queue_pc_head(drive, pc, rq);
 805 }
 806
 807 /*
 808  *      idefloppy_pc_intr is the usual interrupt handler which will be called
 809  *      during a packet command.
 810  */
 811 static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive)
 812 {
 813         idefloppy_floppy_t *floppy = drive->driver_data;
 814         atapi_status_t status;
 815         atapi_bcount_t bcount;
 816         atapi_ireason_t ireason;
 817         idefloppy_pc_t *pc = floppy->pc;
 818         struct request *rq = pc->rq;
 819         unsigned int temp;
 820
 821         debug_log(KERN_INFO "ide-floppy: Reached %s interrupt handler\n",
 822                 __FUNCTION__);
 823
 824         if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
 825                 if (HWIF(drive)->ide_dma_end(drive)) {
 826                         set_bit(PC_DMA_ERROR, &pc->flags);
 827                 } else {
 828                         pc->actually_transferred = pc->request_transfer;
 829                         idefloppy_update_buffers(drive, pc);
 830                 }
 831                 debug_log(KERN_INFO "ide-floppy: DMA finished\n");
 832         }
 833
 834         /* Clear the interrupt */
 835         status.all = HWIF(drive)->INB(IDE_STATUS_REG);
 836
 837         if (!status.b.drq) {                    /* No more interrupts */
 838                 debug_log(KERN_INFO "Packet command completed, %d bytes "
 839                         "transferred\n", pc->actually_transferred);
 840                 clear_bit(PC_DMA_IN_PROGRESS, &pc->flags);
 841
 842                 local_irq_enable_in_hardirq();
 843
 844                 if (status.b.check || test_bit(PC_DMA_ERROR, &pc->flags)) {
 845                         /* Error detected */
 846                         debug_log(KERN_INFO "ide-floppy: %s: I/O error\n",
 847                                 drive->name);
 848                         rq->errors++;
 849                         if (pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) {
 850                                 printk(KERN_ERR "ide-floppy: I/O error in "
 851                                         "request sense command\n");
 852                                 return ide_do_reset(drive);
 853                         }
 854                         /* Retry operation */
 855                         idefloppy_retry_pc(drive);
 856                         /* queued, but not started */
 857                         return ide_stopped;
 858                 }
 859                 pc->error = 0;
 860                 if (floppy->failed_pc == pc)
 861                         floppy->failed_pc = NULL;
 862                 /* Command finished - Call the callback function */
 863                 pc->callback(drive);
 864                 return ide_stopped;
 865         }
 866
 867         if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
 868                 printk(KERN_ERR "ide-floppy: The floppy wants to issue "
 869                         "more interrupts in DMA mode\n");
 870                 ide_dma_off(drive);
 871                 return ide_do_reset(drive);
 872         }
 873
 874         /* Get the number of bytes to transfer */
 875         bcount.b.high = HWIF(drive)->INB(IDE_BCOUNTH_REG);
 876         bcount.b.low = HWIF(drive)->INB(IDE_BCOUNTL_REG);
 877         /* on this interrupt */
 878         ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
 879
 880         if (ireason.b.cod) {
 881                 printk(KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n");
 882                 return ide_do_reset(drive);
 883         }
 884         if (ireason.b.io == test_bit(PC_WRITING, &pc->flags)) {
 885                 /* Hopefully, we will never get here */
 886                 printk(KERN_ERR "ide-floppy: We wanted to %s, ",
 887                         ireason.b.io ? "Write":"Read");
 888                 printk(KERN_ERR "but the floppy wants us to %s !\n",
 889                         ireason.b.io ? "Read":"Write");
 890                 return ide_do_reset(drive);
 891         }
 892         if (!test_bit(PC_WRITING, &pc->flags)) {
 893                 /* Reading - Check that we have enough space */
 894                 temp = pc->actually_transferred + bcount.all;
 895                 if (temp > pc->request_transfer) {
 896                         if (temp > pc->buffer_size) {
 897                                 printk(KERN_ERR "ide-floppy: The floppy wants "
 898                                         "to send us more data than expected "
 899                                         "- discarding data\n");
 900                                 idefloppy_discard_data(drive,bcount.all);
 901                                 BUG_ON(HWGROUP(drive)->handler != NULL);
 902                                 ide_set_handler(drive,
 903                                                 &idefloppy_pc_intr,
 904                                                 IDEFLOPPY_WAIT_CMD,
 905                                                 NULL);
 906                                 return ide_started;
 907                         }
 908                         debug_log(KERN_NOTICE "ide-floppy: The floppy wants to "
 909                                 "send us more data than expected - "
 910                                 "allowing transfer\n");
 911                 }
 912         }
 913         if (test_bit(PC_WRITING, &pc->flags)) {
 914                 if (pc->buffer != NULL)
 915                         /* Write the current buffer */
 916                         HWIF(drive)->atapi_output_bytes(drive,
 917                                                 pc->current_position,
 918                                                 bcount.all);
 919                 else
 920                         idefloppy_output_buffers(drive, pc, bcount.all);
 921         } else {
 922                 if (pc->buffer != NULL)
 923                         /* Read the current buffer */
 924                         HWIF(drive)->atapi_input_bytes(drive,
 925                                                 pc->current_position,
 926                                                 bcount.all);
 927                 else
 928                         idefloppy_input_buffers(drive, pc, bcount.all);
 929         }
 930         /* Update the current position */
 931         pc->actually_transferred += bcount.all;
 932         pc->current_position += bcount.all;
 933
 934         BUG_ON(HWGROUP(drive)->handler != NULL);
 935         ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);           /* And set the interrupt handler again */
 936         return ide_started;
 937 }
 938
 939 /*
 940  * This is the original routine that did the packet transfer.
 941  * It fails at high speeds on the Iomega ZIP drive, so there's a slower version
 942  * for that drive below. The algorithm is chosen based on drive type
 943  */
 944 static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive)
 945 {
 946         ide_startstop_t startstop;
 947         idefloppy_floppy_t *floppy = drive->driver_data;
 948         atapi_ireason_t ireason;
 949
 950         if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
 951                 printk(KERN_ERR "ide-floppy: Strange, packet command "
 952                                 "initiated yet DRQ isn't asserted\n");
 953                 return startstop;
 954         }
 955         ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
 956         if (!ireason.b.cod || ireason.b.io) {
 957                 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while "
 958                                 "issuing a packet command\n");
 959                 return ide_do_reset(drive);
 960         }
 961         BUG_ON(HWGROUP(drive)->handler != NULL);
 962         /* Set the interrupt routine */
 963         ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL);
 964         /* Send the actual packet */
 965         HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
 966         return ide_started;
 967 }
 968
 969
 970 /*
 971  * What we have here is a classic case of a top half / bottom half
 972  * interrupt service routine. In interrupt mode, the device sends
 973  * an interrupt to signal it's ready to receive a packet. However,
 974  * we need to delay about 2-3 ticks before issuing the packet or we
 975  * gets in trouble.
 976  *
 977  * So, follow carefully. transfer_pc1 is called as an interrupt (or
 978  * directly). In either case, when the device says it's ready for a
 979  * packet, we schedule the packet transfer to occur about 2-3 ticks
 980  * later in transfer_pc2.
 981  */
 982 static int idefloppy_transfer_pc2 (ide_drive_t *drive)
 983 {
 984         idefloppy_floppy_t *floppy = drive->driver_data;
 985
 986         /* Send the actual packet */
 987         HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12);
 988         /* Timeout for the packet command */
 989         return IDEFLOPPY_WAIT_CMD;
 990 }
 991
 992 static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive)
 993 {
 994         idefloppy_floppy_t *floppy = drive->driver_data;
 995         ide_startstop_t startstop;
 996         atapi_ireason_t ireason;
 997
 998         if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
 999                 printk(KERN_ERR "ide-floppy: Strange, packet command "
1000                                 "initiated yet DRQ isn't asserted\n");
1001                 return startstop;
1002         }
1003         ireason.all = HWIF(drive)->INB(IDE_IREASON_REG);
1004         if (!ireason.b.cod || ireason.b.io) {
1005                 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) "
1006                                 "while issuing a packet command\n");
1007                 return ide_do_reset(drive);
1008         }
1009         /*
1010          * The following delay solves a problem with ATAPI Zip 100 drives
1011          * where the Busy flag was apparently being deasserted before the
1012          * unit was ready to receive data. This was happening on a
1013          * 1200 MHz Athlon system. 10/26/01 25msec is too short,
1014          * 40 and 50msec work well. idefloppy_pc_intr will not be actually
1015          * used until after the packet is moved in about 50 msec.
1016          */
1017         BUG_ON(HWGROUP(drive)->handler != NULL);
1018         ide_set_handler(drive,
1019           &idefloppy_pc_intr,           /* service routine for packet command */
1020           floppy->ticks,                /* wait this long before "failing" */
1021           &idefloppy_transfer_pc2);     /* fail == transfer_pc2 */
1022         return ide_started;
1023 }
1024
1025 /**
1026  * idefloppy_should_report_error()
1027  *
1028  * Supresses error messages resulting from Medium not present
1029  */
1030 static inline int idefloppy_should_report_error(idefloppy_floppy_t *floppy)
1031 {
1032         if (floppy->sense_key == 0x02 &&
1033             floppy->asc       == 0x3a &&
1034             floppy->ascq      == 0x00)
1035                 return 0;
1036         return 1;
1037 }
1038
1039 /*
1040  *      Issue a packet command
1041  */
1042 static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc)
1043 {
1044         idefloppy_floppy_t *floppy = drive->driver_data;
1045         ide_hwif_t *hwif = drive->hwif;
1046         atapi_feature_t feature;
1047         atapi_bcount_t bcount;
1048         ide_handler_t *pkt_xfer_routine;
1049
1050 #if 0 /* Accessing floppy->pc is not valid here, the previous pc may be gone
1051          and have lived on another thread's stack; that stack may have become
1052          unmapped meanwhile (CONFIG_DEBUG_PAGEALLOC). */
1053 #if IDEFLOPPY_DEBUG_BUGS
1054         if (floppy->pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD &&
1055             pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) {
1056                 printk(KERN_ERR "ide-floppy: possible ide-floppy.c bug - "
1057                         "Two request sense in serial were issued\n");
1058         }
1059 #endif /* IDEFLOPPY_DEBUG_BUGS */
1060 #endif
1061
1062         if (floppy->failed_pc == NULL &&
1063             pc->c[0] != IDEFLOPPY_REQUEST_SENSE_CMD)
1064                 floppy->failed_pc = pc;
1065         /* Set the current packet command */
1066         floppy->pc = pc;
1067
1068         if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES ||
1069             test_bit(PC_ABORT, &pc->flags)) {
1070                 /*
1071                  *      We will "abort" retrying a packet command in case
1072                  *      a legitimate error code was received.
1073                  */
1074                 if (!test_bit(PC_ABORT, &pc->flags)) {
1075                         if (!test_bit(PC_SUPPRESS_ERROR, &pc->flags)) {
1076                                 if (idefloppy_should_report_error(floppy))
1077                                         printk(KERN_ERR "ide-floppy: %s: I/O error, "
1078                                                "pc = %2x, key = %2x, "
1079                                                "asc = %2x, ascq = %2x\n",
1080                                                drive->name, pc->c[0],
1081                                                floppy->sense_key,
1082                                                floppy->asc, floppy->ascq);
1083                         }
1084                         /* Giving up */
1085                         pc->error = IDEFLOPPY_ERROR_GENERAL;
1086                 }
1087                 floppy->failed_pc = NULL;
1088                 pc->callback(drive);
1089                 return ide_stopped;
1090         }
1091
1092         debug_log(KERN_INFO "Retry number - %d\n",pc->retries);
1093
1094         pc->retries++;
1095         /* We haven't transferred any data yet */
1096         pc->actually_transferred = 0;
1097         pc->current_position = pc->buffer;
1098         bcount.all = min(pc->request_transfer, 63 * 1024);
1099
1100         if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags))
1101                 ide_dma_off(drive);
1102
1103         feature.all = 0;
1104
1105         if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
1106                 feature.b.dma = !hwif->dma_setup(drive);
1107
1108         if (IDE_CONTROL_REG)
1109                 HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
1110         /* Use PIO/DMA */
1111         HWIF(drive)->OUTB(feature.all, IDE_FEATURE_REG);
1112         HWIF(drive)->OUTB(bcount.b.high, IDE_BCOUNTH_REG);
1113         HWIF(drive)->OUTB(bcount.b.low, IDE_BCOUNTL_REG);
1114         HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG);
1115
1116         if (feature.b.dma) {    /* Begin DMA, if necessary */
1117                 set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
1118                 hwif->dma_start(drive);
1119         }
1120
1121         /* Can we transfer the packet when we get the interrupt or wait? */
1122         if (test_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) {
1123                 /* wait */
1124                 pkt_xfer_routine = &idefloppy_transfer_pc1;
1125         } else {
1126                 /* immediate */
1127                 pkt_xfer_routine = &idefloppy_transfer_pc;
1128         }
1129
1130         if (test_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) {
1131                 /* Issue the packet command */
1132                 ide_execute_command(drive, WIN_PACKETCMD,
1133                                 pkt_xfer_routine,
1134                                 IDEFLOPPY_WAIT_CMD,
1135                                 NULL);
1136                 return ide_started;
1137         } else {
1138                 /* Issue the packet command */
1139                 HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
1140                 return (*pkt_xfer_routine) (drive);
1141         }
1142 }
1143
1144 static void idefloppy_rw_callback (ide_drive_t *drive)
1145 {
1146         debug_log(KERN_INFO "ide-floppy: Reached idefloppy_rw_callback\n");
1147
1148         idefloppy_do_end_request(drive, 1, 0);
1149         return;
1150 }
1151
1152 static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent)
1153 {
1154         debug_log(KERN_INFO "ide-floppy: creating prevent removal command, "
1155                 "prevent = %d\n", prevent);
1156
1157         idefloppy_init_pc(pc);
1158         pc->c[0] = IDEFLOPPY_PREVENT_REMOVAL_CMD;
1159         pc->c[4] = prevent;
1160 }
1161
1162 static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc)
1163 {
1164         idefloppy_init_pc(pc);
1165         pc->c[0] = IDEFLOPPY_READ_CAPACITY_CMD;
1166         pc->c[7] = 255;
1167         pc->c[8] = 255;
1168         pc->request_transfer = 255;
1169 }
1170
1171 static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l,
1172                                               int flags)
1173 {
1174         idefloppy_init_pc(pc);
1175         pc->c[0] = IDEFLOPPY_FORMAT_UNIT_CMD;
1176         pc->c[1] = 0x17;
1177
1178         memset(pc->buffer, 0, 12);
1179         pc->buffer[1] = 0xA2;
1180         /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
1181
1182         if (flags & 1)                          /* Verify bit on... */
1183                 pc->buffer[1] ^= 0x20;          /* ... turn off DCRT bit */
1184         pc->buffer[3] = 8;
1185
1186         put_unaligned(htonl(b), (unsigned int *)(&pc->buffer[4]));
1187         put_unaligned(htonl(l), (unsigned int *)(&pc->buffer[8]));
1188         pc->buffer_size=12;
1189         set_bit(PC_WRITING, &pc->flags);
1190 }
1191
1192 /*
1193  *      A mode sense command is used to "sense" floppy parameters.
1194  */
1195 static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type)
1196 {
1197         u16 length = sizeof(idefloppy_mode_parameter_header_t);
1198
1199         idefloppy_init_pc(pc);
1200         pc->c[0] = IDEFLOPPY_MODE_SENSE_CMD;
1201         pc->c[1] = 0;
1202         pc->c[2] = page_code + (type << 6);
1203
1204         switch (page_code) {
1205                 case IDEFLOPPY_CAPABILITIES_PAGE:
1206                         length += 12;
1207                         break;
1208                 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
1209                         length += 32;
1210                         break;
1211                 default:
1212                         printk(KERN_ERR "ide-floppy: unsupported page code "
1213                                 "in create_mode_sense_cmd\n");
1214         }
1215         put_unaligned(htons(length), (u16 *) &pc->c[7]);
1216         pc->request_transfer = length;
1217 }
1218
1219 static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start)
1220 {
1221         idefloppy_init_pc(pc);
1222         pc->c[0] = IDEFLOPPY_START_STOP_CMD;
1223         pc->c[4] = start;
1224 }
1225
1226 static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc)
1227 {
1228         idefloppy_init_pc(pc);
1229         pc->c[0] = IDEFLOPPY_TEST_UNIT_READY_CMD;
1230 }
1231
1232 static void idefloppy_create_rw_cmd (idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq, unsigned long sector)
1233 {
1234         int block = sector / floppy->bs_factor;
1235         int blocks = rq->nr_sectors / floppy->bs_factor;
1236         int cmd = rq_data_dir(rq);
1237
1238         debug_log("create_rw1%d_cmd: block == %d, blocks == %d\n",
1239                 2 * test_bit (IDEFLOPPY_USE_READ12, &floppy->flags),
1240                 block, blocks);
1241
1242         idefloppy_init_pc(pc);
1243         if (test_bit(IDEFLOPPY_USE_READ12, &floppy->flags)) {
1244                 pc->c[0] = cmd == READ ? IDEFLOPPY_READ12_CMD : IDEFLOPPY_WRITE12_CMD;
1245                 put_unaligned(htonl(blocks), (unsigned int *) &pc->c[6]);
1246         } else {
1247                 pc->c[0] = cmd == READ ? IDEFLOPPY_READ10_CMD : IDEFLOPPY_WRITE10_CMD;
1248                 put_unaligned(htons(blocks), (unsigned short *) &pc->c[7]);
1249         }
1250         put_unaligned(htonl(block), (unsigned int *) &pc->c[2]);
1251         pc->callback = &idefloppy_rw_callback;
1252         pc->rq = rq;
1253         pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
1254         if (rq->cmd_flags & REQ_RW)
1255                 set_bit(PC_WRITING, &pc->flags);
1256         pc->buffer = NULL;
1257         pc->request_transfer = pc->buffer_size = blocks * floppy->block_size;
1258         set_bit(PC_DMA_RECOMMENDED, &pc->flags);
1259 }
1260
1261 static void
1262 idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq)
1263 {
1264         idefloppy_init_pc(pc);
1265         pc->callback = &idefloppy_rw_callback;
1266         memcpy(pc->c, rq->cmd, sizeof(pc->c));
1267         pc->rq = rq;
1268         pc->b_count = rq->data_len;
1269         if (rq->data_len && rq_data_dir(rq) == WRITE)
1270                 set_bit(PC_WRITING, &pc->flags);
1271         pc->buffer = rq->data;
1272         if (rq->bio)
1273                 set_bit(PC_DMA_RECOMMENDED, &pc->flags);
1274
1275         /*
1276          * possibly problematic, doesn't look like ide-floppy correctly
1277          * handled scattered requests if dma fails...
1278          */
1279         pc->request_transfer = pc->buffer_size = rq->data_len;
1280 }
1281
1282 /*
1283  *      idefloppy_do_request is our request handling function.
1284  */
1285 static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, sector_t block_s)
1286 {
1287         idefloppy_floppy_t *floppy = drive->driver_data;
1288         idefloppy_pc_t *pc;
1289         unsigned long block = (unsigned long)block_s;
1290
1291         debug_log(KERN_INFO "dev: %s, flags: %lx, errors: %d\n",
1292                         rq->rq_disk ? rq->rq_disk->disk_name : "?",
1293                         rq->flags, rq->errors);
1294         debug_log(KERN_INFO "sector: %ld, nr_sectors: %ld, "
1295                         "current_nr_sectors: %d\n", (long)rq->sector,
1296                         rq->nr_sectors, rq->current_nr_sectors);
1297
1298         if (rq->errors >= ERROR_MAX) {
1299                 if (floppy->failed_pc != NULL) {
1300                         if (idefloppy_should_report_error(floppy))
1301                                 printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x,"
1302                                        " key = %2x, asc = %2x, ascq = %2x\n",
1303                                        drive->name, floppy->failed_pc->c[0],
1304                                        floppy->sense_key, floppy->asc, floppy->ascq);
1305                 }
1306                 else
1307                         printk(KERN_ERR "ide-floppy: %s: I/O error\n",
1308                                 drive->name);
1309                 idefloppy_do_end_request(drive, 0, 0);
1310                 return ide_stopped;
1311         }
1312         if (blk_fs_request(rq)) {
1313                 if (((long)rq->sector % floppy->bs_factor) ||
1314                     (rq->nr_sectors % floppy->bs_factor)) {
1315                         printk("%s: unsupported r/w request size\n",
1316                                 drive->name);
1317                         idefloppy_do_end_request(drive, 0, 0);
1318                         return ide_stopped;
1319                 }
1320                 pc = idefloppy_next_pc_storage(drive);
1321                 idefloppy_create_rw_cmd(floppy, pc, rq, block);
1322         } else if (blk_special_request(rq)) {
1323                 pc = (idefloppy_pc_t *) rq->buffer;
1324         } else if (blk_pc_request(rq)) {
1325                 pc = idefloppy_next_pc_storage(drive);
1326                 idefloppy_blockpc_cmd(floppy, pc, rq);
1327         } else {
1328                 blk_dump_rq_flags(rq,
1329                         "ide-floppy: unsupported command in queue");
1330                 idefloppy_do_end_request(drive, 0, 0);
1331                 return ide_stopped;
1332         }
1333
1334         pc->rq = rq;
1335         return idefloppy_issue_pc(drive, pc);
1336 }
1337
1338 /*
1339  *      idefloppy_queue_pc_tail adds a special packet command request to the
1340  *      tail of the request queue, and waits for it to be serviced.
1341  */
1342 static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc)
1343 {
1344         struct ide_floppy_obj *floppy = drive->driver_data;
1345         struct request rq;
1346
1347         ide_init_drive_cmd (&rq);
1348         rq.buffer = (char *) pc;
1349         rq.cmd_type = REQ_TYPE_SPECIAL;
1350         rq.rq_disk = floppy->disk;
1351
1352         return ide_do_drive_cmd(drive, &rq, ide_wait);
1353 }
1354
1355 /*
1356  *      Look at the flexible disk page parameters. We will ignore the CHS
1357  *      capacity parameters and use the LBA parameters instead.
1358  */
1359 static int idefloppy_get_flexible_disk_page (ide_drive_t *drive)
1360 {
1361         idefloppy_floppy_t *floppy = drive->driver_data;
1362         idefloppy_pc_t pc;
1363         idefloppy_mode_parameter_header_t *header;
1364         idefloppy_flexible_disk_page_t *page;
1365         int capacity, lba_capacity;
1366
1367         idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, MODE_SENSE_CURRENT);
1368         if (idefloppy_queue_pc_tail(drive,&pc)) {
1369                 printk(KERN_ERR "ide-floppy: Can't get flexible disk "
1370                         "page parameters\n");
1371                 return 1;
1372         }
1373         header = (idefloppy_mode_parameter_header_t *) pc.buffer;
1374         floppy->wp = header->wp;
1375         set_disk_ro(floppy->disk, floppy->wp);
1376         page = (idefloppy_flexible_disk_page_t *) (header + 1);
1377
1378         page->transfer_rate = ntohs(page->transfer_rate);
1379         page->sector_size = ntohs(page->sector_size);
1380         page->cyls = ntohs(page->cyls);
1381         page->rpm = ntohs(page->rpm);
1382         capacity = page->cyls * page->heads * page->sectors * page->sector_size;
1383         if (memcmp (page, &floppy->flexible_disk_page, sizeof (idefloppy_flexible_disk_page_t)))
1384                 printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, "
1385                                 "%d sector size, %d rpm\n",
1386                         drive->name, capacity / 1024, page->cyls,
1387                         page->heads, page->sectors,
1388                         page->transfer_rate / 8, page->sector_size, page->rpm);
1389
1390         floppy->flexible_disk_page = *page;
1391         drive->bios_cyl = page->cyls;
1392         drive->bios_head = page->heads;
1393         drive->bios_sect = page->sectors;
1394         lba_capacity = floppy->blocks * floppy->block_size;
1395         if (capacity < lba_capacity) {
1396                 printk(KERN_NOTICE "%s: The disk reports a capacity of %d "
1397                         "bytes, but the drive only handles %d\n",
1398                         drive->name, lba_capacity, capacity);
1399                 floppy->blocks = floppy->block_size ? capacity / floppy->block_size : 0;
1400         }
1401         return 0;
1402 }
1403
1404 static int idefloppy_get_capability_page(ide_drive_t *drive)
1405 {
1406         idefloppy_floppy_t *floppy = drive->driver_data;
1407         idefloppy_pc_t pc;
1408         idefloppy_mode_parameter_header_t *header;
1409         idefloppy_capabilities_page_t *page;
1410
1411         floppy->srfp = 0;
1412         idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE,
1413                                                  MODE_SENSE_CURRENT);
1414
1415         set_bit(PC_SUPPRESS_ERROR, &pc.flags);
1416         if (idefloppy_queue_pc_tail(drive,&pc)) {
1417                 return 1;
1418         }
1419
1420         header = (idefloppy_mode_parameter_header_t *) pc.buffer;
1421         page= (idefloppy_capabilities_page_t *)(header+1);
1422         floppy->srfp = page->srfp;
1423         return (0);
1424 }
1425
1426 /*
1427  *      Determine if a media is present in the floppy drive, and if so,
1428  *      its LBA capacity.
1429  */
1430 static int idefloppy_get_capacity (ide_drive_t *drive)
1431 {
1432         idefloppy_floppy_t *floppy = drive->driver_data;
1433         idefloppy_pc_t pc;
1434         idefloppy_capacity_header_t *header;
1435         idefloppy_capacity_descriptor_t *descriptor;
1436         int i, descriptors, rc = 1, blocks, length;
1437
1438         drive->bios_cyl = 0;
1439         drive->bios_head = drive->bios_sect = 0;
1440         floppy->blocks = 0;
1441         floppy->bs_factor = 1;
1442         set_capacity(floppy->disk, 0);
1443
1444         idefloppy_create_read_capacity_cmd(&pc);
1445         if (idefloppy_queue_pc_tail(drive, &pc)) {
1446                 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1447                 return 1;
1448         }
1449         header = (idefloppy_capacity_header_t *) pc.buffer;
1450         descriptors = header->length / sizeof(idefloppy_capacity_descriptor_t);
1451         descriptor = (idefloppy_capacity_descriptor_t *) (header + 1);
1452
1453         for (i = 0; i < descriptors; i++, descriptor++) {
1454                 blocks = descriptor->blocks = ntohl(descriptor->blocks);
1455                 length = descriptor->length = ntohs(descriptor->length);
1456
1457                 if (!i)
1458                 {
1459                 switch (descriptor->dc) {
1460                 /* Clik! drive returns this instead of CAPACITY_CURRENT */
1461                 case CAPACITY_UNFORMATTED:
1462                         if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags))
1463                                 /*
1464                                  * If it is not a clik drive, break out
1465                                  * (maintains previous driver behaviour)
1466                                  */
1467                                 break;
1468                 case CAPACITY_CURRENT:
1469                         /* Normal Zip/LS-120 disks */
1470                         if (memcmp(descriptor, &floppy->capacity, sizeof (idefloppy_capacity_descriptor_t)))
1471                                 printk(KERN_INFO "%s: %dkB, %d blocks, %d "
1472                                         "sector size\n", drive->name,
1473                                         blocks * length / 1024, blocks, length);
1474                         floppy->capacity = *descriptor;
1475                         if (!length || length % 512) {
1476                                 printk(KERN_NOTICE "%s: %d bytes block size "
1477                                         "not supported\n", drive->name, length);
1478                         } else {
1479                                 floppy->blocks = blocks;
1480                                 floppy->block_size = length;
1481                                 if ((floppy->bs_factor = length / 512) != 1)
1482                                         printk(KERN_NOTICE "%s: warning: non "
1483                                                 "512 bytes block size not "
1484                                                 "fully supported\n",
1485                                                 drive->name);
1486                                 rc = 0;
1487                         }
1488                         break;
1489                 case CAPACITY_NO_CARTRIDGE:
1490                         /*
1491                          * This is a KERN_ERR so it appears on screen
1492                          * for the user to see
1493                          */
1494                         printk(KERN_ERR "%s: No disk in drive\n", drive->name);
1495                         break;
1496                 case CAPACITY_INVALID:
1497                         printk(KERN_ERR "%s: Invalid capacity for disk "
1498                                 "in drive\n", drive->name);
1499                         break;
1500                 }
1501                 }
1502                 if (!i) {
1503                         debug_log( "Descriptor 0 Code: %d\n",
1504                                 descriptor->dc);
1505                 }
1506                 debug_log( "Descriptor %d: %dkB, %d blocks, %d "
1507                         "sector size\n", i, blocks * length / 1024, blocks,
1508                         length);
1509         }
1510
1511         /* Clik! disk does not support get_flexible_disk_page */
1512         if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
1513                 (void) idefloppy_get_flexible_disk_page(drive);
1514         }
1515
1516         set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
1517         return rc;
1518 }
1519
1520 /*
1521 ** Obtain the list of formattable capacities.
1522 ** Very similar to idefloppy_get_capacity, except that we push the capacity
1523 ** descriptors to userland, instead of our own structures.
1524 **
1525 ** Userland gives us the following structure:
1526 **
1527 ** struct idefloppy_format_capacities {
1528 **        int nformats;
1529 **        struct {
1530 **                int nblocks;
1531 **                int blocksize;
1532 **                } formats[];
1533 **        } ;
1534 **
1535 ** userland initializes nformats to the number of allocated formats[]
1536 ** records.  On exit we set nformats to the number of records we've
1537 ** actually initialized.
1538 **
1539 */
1540
1541 static int idefloppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
1542 {
1543         idefloppy_pc_t pc;
1544         idefloppy_capacity_header_t *header;
1545         idefloppy_capacity_descriptor_t *descriptor;
1546         int i, descriptors, blocks, length;
1547         int u_array_size;
1548         int u_index;
1549         int __user *argp;
1550
1551         if (get_user(u_array_size, arg))
1552                 return (-EFAULT);
1553
1554         if (u_array_size <= 0)
1555                 return (-EINVAL);
1556
1557         idefloppy_create_read_capacity_cmd(&pc);
1558         if (idefloppy_queue_pc_tail(drive, &pc)) {
1559                 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
1560                 return (-EIO);
1561         }
1562         header = (idefloppy_capacity_header_t *) pc.buffer;
1563         descriptors = header->length /
1564                 sizeof(idefloppy_capacity_descriptor_t);
1565         descriptor = (idefloppy_capacity_descriptor_t *) (header + 1);
1566
1567         u_index = 0;
1568         argp = arg + 1;
1569
1570         /*
1571         ** We always skip the first capacity descriptor.  That's the
1572         ** current capacity.  We are interested in the remaining descriptors,
1573         ** the formattable capacities.
1574         */
1575
1576         for (i=0; i<descriptors; i++, descriptor++) {
1577                 if (u_index >= u_array_size)
1578                         break;  /* User-supplied buffer too small */
1579                 if (i == 0)
1580                         continue;       /* Skip the first descriptor */
1581
1582                 blocks = ntohl(descriptor->blocks);
1583                 length = ntohs(descriptor->length);
1584
1585                 if (put_user(blocks, argp))
1586                         return(-EFAULT);
1587                 ++argp;
1588
1589                 if (put_user(length, argp))
1590                         return (-EFAULT);
1591                 ++argp;
1592
1593                 ++u_index;
1594         }
1595
1596         if (put_user(u_index, arg))
1597                 return (-EFAULT);
1598         return (0);
1599 }
1600
1601 /*
1602 ** Send ATAPI_FORMAT_UNIT to the drive.
1603 **
1604 ** Userland gives us the following structure:
1605 **
1606 ** struct idefloppy_format_command {
1607 **        int nblocks;
1608 **        int blocksize;
1609 **        int flags;
1610 **        } ;
1611 **
1612 ** flags is a bitmask, currently, the only defined flag is:
1613 **
1614 **        0x01 - verify media after format.
1615 */
1616
1617 static int idefloppy_begin_format(ide_drive_t *drive, int __user *arg)
1618 {
1619         int blocks;
1620         int length;
1621         int flags;
1622         idefloppy_pc_t pc;
1623
1624         if (get_user(blocks, arg) ||
1625             get_user(length, arg+1) ||
1626             get_user(flags, arg+2)) {
1627                 return (-EFAULT);
1628         }
1629
1630         /* Get the SFRP bit */
1631         (void) idefloppy_get_capability_page(drive);
1632         idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
1633         if (idefloppy_queue_pc_tail(drive, &pc)) {
1634                 return (-EIO);
1635         }
1636
1637         return (0);
1638 }
1639
1640 /*
1641 ** Get ATAPI_FORMAT_UNIT progress indication.
1642 **
1643 ** Userland gives a pointer to an int.  The int is set to a progress
1644 ** indicator 0-65536, with 65536=100%.
1645 **
1646 ** If the drive does not support format progress indication, we just check
1647 ** the dsc bit, and return either 0 or 65536.
1648 */
1649
1650 static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg)
1651 {
1652         idefloppy_floppy_t *floppy = drive->driver_data;
1653         idefloppy_pc_t pc;
1654         int progress_indication = 0x10000;
1655
1656         if (floppy->srfp) {
1657                 idefloppy_create_request_sense_cmd(&pc);
1658                 if (idefloppy_queue_pc_tail(drive, &pc)) {
1659                         return (-EIO);
1660                 }
1661
1662                 if (floppy->sense_key == 2 &&
1663                     floppy->asc == 4 &&
1664                     floppy->ascq == 4) {
1665                         progress_indication = floppy->progress_indication;
1666                 }
1667                 /* Else assume format_unit has finished, and we're
1668                 ** at 0x10000 */
1669         } else {
1670                 atapi_status_t status;
1671                 unsigned long flags;
1672
1673                 local_irq_save(flags);
1674                 status.all = HWIF(drive)->INB(IDE_STATUS_REG);
1675                 local_irq_restore(flags);
1676
1677                 progress_indication = !status.b.dsc ? 0 : 0x10000;
1678         }
1679         if (put_user(progress_indication, arg))
1680                 return (-EFAULT);
1681
1682         return (0);
1683 }
1684
1685 /*
1686  *      Return the current floppy capacity.
1687  */
1688 static sector_t idefloppy_capacity (ide_drive_t *drive)
1689 {
1690         idefloppy_floppy_t *floppy = drive->driver_data;
1691         unsigned long capacity = floppy->blocks * floppy->bs_factor;
1692
1693         return capacity;
1694 }
1695
1696 /*
1697  *      idefloppy_identify_device checks if we can support a drive,
1698  *      based on the ATAPI IDENTIFY command results.
1699  */
1700 static int idefloppy_identify_device (ide_drive_t *drive,struct hd_driveid *id)
1701 {
1702         struct idefloppy_id_gcw gcw;
1703 #if IDEFLOPPY_DEBUG_INFO
1704         u16 mask,i;
1705         char buffer[80];
1706 #endif /* IDEFLOPPY_DEBUG_INFO */
1707
1708         *((u16 *) &gcw) = id->config;
1709
1710 #ifdef CONFIG_PPC
1711         /* kludge for Apple PowerBook internal zip */
1712         if ((gcw.device_type == 5) &&
1713             !strstr(id->model, "CD-ROM") &&
1714             strstr(id->model, "ZIP"))
1715                 gcw.device_type = 0;
1716 #endif
1717
1718 #if IDEFLOPPY_DEBUG_INFO
1719         printk(KERN_INFO "Dumping ATAPI Identify Device floppy parameters\n");
1720         switch (gcw.protocol) {
1721                 case 0: case 1: sprintf(buffer, "ATA");break;
1722                 case 2: sprintf(buffer, "ATAPI");break;
1723                 case 3: sprintf(buffer, "Reserved (Unknown to ide-floppy)");break;
1724         }
1725         printk(KERN_INFO "Protocol Type: %s\n", buffer);
1726         switch (gcw.device_type) {
1727                 case 0: sprintf(buffer, "Direct-access Device");break;
1728                 case 1: sprintf(buffer, "Streaming Tape Device");break;
1729                 case 2: case 3: case 4: sprintf (buffer, "Reserved");break;
1730                 case 5: sprintf(buffer, "CD-ROM Device");break;
1731                 case 6: sprintf(buffer, "Reserved");
1732                 case 7: sprintf(buffer, "Optical memory Device");break;
1733                 case 0x1f: sprintf(buffer, "Unknown or no Device type");break;
1734                 default: sprintf(buffer, "Reserved");
1735         }
1736         printk(KERN_INFO "Device Type: %x - %s\n", gcw.device_type, buffer);
1737         printk(KERN_INFO "Removable: %s\n",gcw.removable ? "Yes":"No");
1738         switch (gcw.drq_type) {
1739                 case 0: sprintf(buffer, "Microprocessor DRQ");break;
1740                 case 1: sprintf(buffer, "Interrupt DRQ");break;
1741                 case 2: sprintf(buffer, "Accelerated DRQ");break;
1742                 case 3: sprintf(buffer, "Reserved");break;
1743         }
1744         printk(KERN_INFO "Command Packet DRQ Type: %s\n", buffer);
1745         switch (gcw.packet_size) {
1746                 case 0: sprintf(buffer, "12 bytes");break;
1747                 case 1: sprintf(buffer, "16 bytes");break;
1748                 default: sprintf(buffer, "Reserved");break;
1749         }
1750         printk(KERN_INFO "Command Packet Size: %s\n", buffer);
1751         printk(KERN_INFO "Model: %.40s\n",id->model);
1752         printk(KERN_INFO "Firmware Revision: %.8s\n",id->fw_rev);
1753         printk(KERN_INFO "Serial Number: %.20s\n",id->serial_no);
1754         printk(KERN_INFO "Write buffer size(?): %d bytes\n",id->buf_size*512);
1755         printk(KERN_INFO "DMA: %s",id->capability & 0x01 ? "Yes\n":"No\n");
1756         printk(KERN_INFO "LBA: %s",id->capability & 0x02 ? "Yes\n":"No\n");
1757         printk(KERN_INFO "IORDY can be disabled: %s",id->capability & 0x04 ? "Yes\n":"No\n");
1758         printk(KERN_INFO "IORDY supported: %s",id->capability & 0x08 ? "Yes\n":"Unknown\n");
1759         printk(KERN_INFO "ATAPI overlap supported: %s",id->capability & 0x20 ? "Yes\n":"No\n");
1760         printk(KERN_INFO "PIO Cycle Timing Category: %d\n",id->tPIO);
1761         printk(KERN_INFO "DMA Cycle Timing Category: %d\n",id->tDMA);
1762         printk(KERN_INFO "Single Word DMA supported modes:\n");
1763         for (i=0,mask=1;i<8;i++,mask=mask << 1) {
1764                 if (id->dma_1word & mask)
1765                         printk(KERN_INFO "   Mode %d%s\n", i,
1766                         (id->dma_1word & (mask << 8)) ? " (active)" : "");
1767         }
1768         printk(KERN_INFO "Multi Word DMA supported modes:\n");
1769         for (i=0,mask=1;i<8;i++,mask=mask << 1) {
1770                 if (id->dma_mword & mask)
1771                         printk(KERN_INFO "   Mode %d%s\n", i,
1772                         (id->dma_mword & (mask << 8)) ? " (active)" : "");
1773         }
1774         if (id->field_valid & 0x0002) {
1775                 printk(KERN_INFO "Enhanced PIO Modes: %s\n",
1776                         id->eide_pio_modes & 1 ? "Mode 3":"None");
1777                 if (id->eide_dma_min == 0)
1778                         sprintf(buffer, "Not supported");
1779                 else
1780                         sprintf(buffer, "%d ns",id->eide_dma_min);
1781                 printk(KERN_INFO "Minimum Multi-word DMA cycle per word: %s\n", buffer);
1782                 if (id->eide_dma_time == 0)
1783                         sprintf(buffer, "Not supported");
1784                 else
1785                         sprintf(buffer, "%d ns",id->eide_dma_time);
1786                 printk(KERN_INFO "Manufacturer\'s Recommended Multi-word cycle: %s\n", buffer);
1787                 if (id->eide_pio == 0)
1788                         sprintf(buffer, "Not supported");
1789                 else
1790                         sprintf(buffer, "%d ns",id->eide_pio);
1791                 printk(KERN_INFO "Minimum PIO cycle without IORDY: %s\n",
1792                         buffer);
1793                 if (id->eide_pio_iordy == 0)
1794                         sprintf(buffer, "Not supported");
1795                 else
1796                         sprintf(buffer, "%d ns",id->eide_pio_iordy);
1797                 printk(KERN_INFO "Minimum PIO cycle with IORDY: %s\n", buffer);
1798         } else
1799                 printk(KERN_INFO "According to the device, fields 64-70 are not valid.\n");
1800 #endif /* IDEFLOPPY_DEBUG_INFO */
1801
1802         if (gcw.protocol != 2)
1803                 printk(KERN_ERR "ide-floppy: Protocol is not ATAPI\n");
1804         else if (gcw.device_type != 0)
1805                 printk(KERN_ERR "ide-floppy: Device type is not set to floppy\n");
1806         else if (!gcw.removable)
1807                 printk(KERN_ERR "ide-floppy: The removable flag is not set\n");
1808         else if (gcw.drq_type == 3) {
1809                 printk(KERN_ERR "ide-floppy: Sorry, DRQ type %d not supported\n", gcw.drq_type);
1810         } else if (gcw.packet_size != 0) {
1811                 printk(KERN_ERR "ide-floppy: Packet size is not 12 bytes long\n");
1812         } else
1813                 return 1;
1814         return 0;
1815 }
1816
1817 #ifdef CONFIG_IDE_PROC_FS
1818 static void idefloppy_add_settings(ide_drive_t *drive)
1819 {
1820         idefloppy_floppy_t *floppy = drive->driver_data;
1821
1822 /*
1823  *                      drive   setting name    read/write      data type       min     max     mul_factor      div_factor      data pointer            set function
1824  */
1825         ide_add_setting(drive,  "bios_cyl",     SETTING_RW,     TYPE_INT,       0,      1023,           1,              1,      &drive->bios_cyl,       NULL);
1826         ide_add_setting(drive,  "bios_head",    SETTING_RW,     TYPE_BYTE,      0,      255,            1,              1,      &drive->bios_head,      NULL);
1827         ide_add_setting(drive,  "bios_sect",    SETTING_RW,     TYPE_BYTE,      0,      63,             1,              1,      &drive->bios_sect,      NULL);
1828         ide_add_setting(drive,  "ticks",        SETTING_RW,     TYPE_BYTE,      0,      255,            1,              1,      &floppy->ticks,         NULL);
1829 }
1830 #else
1831 static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
1832 #endif
1833
1834 /*
1835  *      Driver initialization.
1836  */
1837 static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy)
1838 {
1839         struct idefloppy_id_gcw gcw;
1840
1841         *((u16 *) &gcw) = drive->id->config;
1842         floppy->pc = floppy->pc_stack;
1843         if (gcw.drq_type == 1)
1844                 set_bit(IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags);
1845         /*
1846          *      We used to check revisions here. At this point however
1847          *      I'm giving up. Just assume they are all broken, its easier.
1848          *
1849          *      The actual reason for the workarounds was likely
1850          *      a driver bug after all rather than a firmware bug,
1851          *      and the workaround below used to hide it. It should
1852          *      be fixed as of version 1.9, but to be on the safe side
1853          *      we'll leave the limitation below for the 2.2.x tree.
1854          */
1855
1856         if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) {
1857                 set_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags);
1858                 /* This value will be visible in the /proc/ide/hdx/settings */
1859                 floppy->ticks = IDEFLOPPY_TICKS_DELAY;
1860                 blk_queue_max_sectors(drive->queue, 64);
1861         }
1862
1863         /*
1864         *      Guess what?  The IOMEGA Clik! drive also needs the
1865         *      above fix.  It makes nasty clicking noises without
1866         *      it, so please don't remove this.
1867         */
1868         if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) {
1869                 blk_queue_max_sectors(drive->queue, 64);
1870                 set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags);
1871         }
1872
1873
1874         (void) idefloppy_get_capacity(drive);
1875         idefloppy_add_settings(drive);
1876 }
1877
1878 static void ide_floppy_remove(ide_drive_t *drive)
1879 {
1880         idefloppy_floppy_t *floppy = drive->driver_data;
1881         struct gendisk *g = floppy->disk;
1882
1883         ide_proc_unregister_driver(drive, floppy->driver);
1884
1885         del_gendisk(g);
1886
1887         ide_floppy_put(floppy);
1888 }
1889
1890 static void ide_floppy_release(struct kref *kref)
1891 {
1892         struct ide_floppy_obj *floppy = to_ide_floppy(kref);
1893         ide_drive_t *drive = floppy->drive;
1894         struct gendisk *g = floppy->disk;
1895
1896         drive->driver_data = NULL;
1897         g->private_data = NULL;
1898         put_disk(g);
1899         kfree(floppy);
1900 }
1901
1902 #ifdef CONFIG_IDE_PROC_FS
1903 static int proc_idefloppy_read_capacity
1904         (char *page, char **start, off_t off, int count, int *eof, void *data)
1905 {
1906         ide_drive_t*drive = (ide_drive_t *)data;
1907         int len;
1908
1909         len = sprintf(page,"%llu\n", (long long)idefloppy_capacity(drive));
1910         PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
1911 }
1912
1913 static ide_proc_entry_t idefloppy_proc[] = {
1914         { "capacity",   S_IFREG|S_IRUGO,        proc_idefloppy_read_capacity, NULL },
1915         { "geometry",   S_IFREG|S_IRUGO,        proc_ide_read_geometry, NULL },
1916         { NULL, 0, NULL, NULL }
1917 };
1918 #endif  /* CONFIG_IDE_PROC_FS */
1919
1920 static int ide_floppy_probe(ide_drive_t *);
1921
1922 static ide_driver_t idefloppy_driver = {
1923         .gen_driver = {
1924                 .owner          = THIS_MODULE,
1925                 .name           = "ide-floppy",
1926                 .bus            = &ide_bus_type,
1927         },
1928         .probe                  = ide_floppy_probe,
1929         .remove                 = ide_floppy_remove,
1930         .version                = IDEFLOPPY_VERSION,
1931         .media                  = ide_floppy,
1932         .supports_dsc_overlap   = 0,
1933         .do_request             = idefloppy_do_request,
1934         .end_request            = idefloppy_do_end_request,
1935         .error                  = __ide_error,
1936         .abort                  = __ide_abort,
1937 #ifdef CONFIG_IDE_PROC_FS
1938         .proc                   = idefloppy_proc,
1939 #endif
1940 };
1941
1942 static int idefloppy_open(struct inode *inode, struct file *filp)
1943 {
1944         struct gendisk *disk = inode->i_bdev->bd_disk;
1945         struct ide_floppy_obj *floppy;
1946         ide_drive_t *drive;
1947         idefloppy_pc_t pc;
1948         int ret = 0;
1949
1950         debug_log(KERN_INFO "Reached idefloppy_open\n");
1951
1952         if (!(floppy = ide_floppy_get(disk)))
1953                 return -ENXIO;
1954
1955         drive = floppy->drive;
1956
1957         floppy->openers++;
1958
1959         if (floppy->openers == 1) {
1960                 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
1961                 /* Just in case */
1962
1963                 idefloppy_create_test_unit_ready_cmd(&pc);
1964                 if (idefloppy_queue_pc_tail(drive, &pc)) {
1965                         idefloppy_create_start_stop_cmd(&pc, 1);
1966                         (void) idefloppy_queue_pc_tail(drive, &pc);
1967                 }
1968
1969                 if (idefloppy_get_capacity (drive)
1970                    && (filp->f_flags & O_NDELAY) == 0
1971                     /*
1972                     ** Allow O_NDELAY to open a drive without a disk, or with
1973                     ** an unreadable disk, so that we can get the format
1974                     ** capacity of the drive or begin the format - Sam
1975                     */
1976                     ) {
1977                         ret = -EIO;
1978                         goto out_put_floppy;
1979                 }
1980
1981                 if (floppy->wp && (filp->f_mode & 2)) {
1982                         ret = -EROFS;
1983                         goto out_put_floppy;
1984                 }
1985                 set_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags);
1986                 /* IOMEGA Clik! drives do not support lock/unlock commands */
1987                 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
1988                         idefloppy_create_prevent_cmd(&pc, 1);
1989                         (void) idefloppy_queue_pc_tail(drive, &pc);
1990                 }
1991                 check_disk_change(inode->i_bdev);
1992         } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) {
1993                 ret = -EBUSY;
1994                 goto out_put_floppy;
1995         }
1996         return 0;
1997
1998 out_put_floppy:
1999         floppy->openers--;
2000         ide_floppy_put(floppy);
2001         return ret;
2002 }
2003
2004 static int idefloppy_release(struct inode *inode, struct file *filp)
2005 {
2006         struct gendisk *disk = inode->i_bdev->bd_disk;
2007         struct ide_floppy_obj *floppy = ide_floppy_g(disk);
2008         ide_drive_t *drive = floppy->drive;
2009         idefloppy_pc_t pc;
2010
2011         debug_log(KERN_INFO "Reached idefloppy_release\n");
2012
2013         if (floppy->openers == 1) {
2014                 /* IOMEGA Clik! drives do not support lock/unlock commands */
2015                 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
2016                         idefloppy_create_prevent_cmd(&pc, 0);
2017                         (void) idefloppy_queue_pc_tail(drive, &pc);
2018                 }
2019
2020                 clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
2021         }
2022
2023         floppy->openers--;
2024
2025         ide_floppy_put(floppy);
2026
2027         return 0;
2028 }
2029
2030 static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
2031 {
2032         struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
2033         ide_drive_t *drive = floppy->drive;
2034
2035         geo->heads = drive->bios_head;
2036         geo->sectors = drive->bios_sect;
2037         geo->cylinders = (u16)drive->bios_cyl; /* truncate */
2038         return 0;
2039 }
2040
2041 static int idefloppy_ioctl(struct inode *inode, struct file *file,
2042                         unsigned int cmd, unsigned long arg)
2043 {
2044         struct block_device *bdev = inode->i_bdev;
2045         struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
2046         ide_drive_t *drive = floppy->drive;
2047         void __user *argp = (void __user *)arg;
2048         int err;
2049         int prevent = (arg) ? 1 : 0;
2050         idefloppy_pc_t pc;
2051
2052         switch (cmd) {
2053         case CDROMEJECT:
2054                 prevent = 0;
2055                 /* fall through */
2056         case CDROM_LOCKDOOR:
2057                 if (floppy->openers > 1)
2058                         return -EBUSY;
2059
2060                 /* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */
2061                 if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) {
2062                         idefloppy_create_prevent_cmd(&pc, prevent);
2063                         (void) idefloppy_queue_pc_tail(drive, &pc);
2064                 }
2065                 if (cmd == CDROMEJECT) {
2066                         idefloppy_create_start_stop_cmd(&pc, 2);
2067                         (void) idefloppy_queue_pc_tail(drive, &pc);
2068                 }
2069                 return 0;
2070         case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
2071                 return 0;
2072         case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
2073                 return idefloppy_get_format_capacities(drive, argp);
2074         case IDEFLOPPY_IOCTL_FORMAT_START:
2075
2076                 if (!(file->f_mode & 2))
2077                         return -EPERM;
2078
2079                 if (floppy->openers > 1) {
2080                         /* Don't format if someone is using the disk */
2081
2082                         clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS,
2083                                   &floppy->flags);
2084                         return -EBUSY;
2085                 }
2086
2087                 set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
2088
2089                 err = idefloppy_begin_format(drive, argp);
2090                 if (err)
2091                         clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags);
2092                 return err;
2093                 /*
2094                 ** Note, the bit will be cleared when the device is
2095                 ** closed.  This is the cleanest way to handle the
2096                 ** situation where the drive does not support
2097                 ** format progress reporting.
2098                 */
2099         case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
2100                 return idefloppy_get_format_progress(drive, argp);
2101         }
2102         return generic_ide_ioctl(drive, file, bdev, cmd, arg);
2103 }
2104
2105 static int idefloppy_media_changed(struct gendisk *disk)
2106 {
2107         struct ide_floppy_obj *floppy = ide_floppy_g(disk);
2108         ide_drive_t *drive = floppy->drive;
2109
2110         /* do not scan partitions twice if this is a removable device */
2111         if (drive->attach) {
2112                 drive->attach = 0;
2113                 return 0;
2114         }
2115         return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags);
2116 }
2117
2118 static int idefloppy_revalidate_disk(struct gendisk *disk)
2119 {
2120         struct ide_floppy_obj *floppy = ide_floppy_g(disk);
2121         set_capacity(disk, idefloppy_capacity(floppy->drive));
2122         return 0;
2123 }
2124
2125 static struct block_device_operations idefloppy_ops = {
2126         .owner          = THIS_MODULE,
2127         .open           = idefloppy_open,
2128         .release        = idefloppy_release,
2129         .ioctl          = idefloppy_ioctl,
2130         .getgeo         = idefloppy_getgeo,
2131         .media_changed  = idefloppy_media_changed,
2132         .revalidate_disk= idefloppy_revalidate_disk
2133 };
2134
2135 static int ide_floppy_probe(ide_drive_t *drive)
2136 {
2137         idefloppy_floppy_t *floppy;
2138         struct gendisk *g;
2139
2140         if (!strstr("ide-floppy", drive->driver_req))
2141                 goto failed;
2142         if (!drive->present)
2143                 goto failed;
2144         if (drive->media != ide_floppy)
2145                 goto failed;
2146         if (!idefloppy_identify_device (drive, drive->id)) {
2147                 printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name);
2148                 goto failed;
2149         }
2150         if (drive->scsi) {
2151                 printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name);
2152                 goto failed;
2153         }
2154         if ((floppy = kzalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) {
2155                 printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name);
2156                 goto failed;
2157         }
2158
2159         g = alloc_disk(1 << PARTN_BITS);
2160         if (!g)
2161                 goto out_free_floppy;
2162
2163         ide_init_disk(g, drive);
2164
2165         ide_proc_register_driver(drive, &idefloppy_driver);
2166
2167         kref_init(&floppy->kref);
2168
2169         floppy->drive = drive;
2170         floppy->driver = &idefloppy_driver;
2171         floppy->disk = g;
2172
2173         g->private_data = &floppy->driver;
2174
2175         drive->driver_data = floppy;
2176
2177         idefloppy_setup (drive, floppy);
2178
2179         g->minors = 1 << PARTN_BITS;
2180         g->driverfs_dev = &drive->gendev;
2181         g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
2182         g->fops = &idefloppy_ops;
2183         drive->attach = 1;
2184         add_disk(g);
2185         return 0;
2186
2187 out_free_floppy:
2188         kfree(floppy);
2189 failed:
2190         return -ENODEV;
2191 }
2192
2193 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
2194
2195 static void __exit idefloppy_exit (void)
2196 {
2197         driver_unregister(&idefloppy_driver.gen_driver);
2198 }
2199
2200 static int __init idefloppy_init(void)
2201 {
2202         printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
2203         return driver_register(&idefloppy_driver.gen_driver);
2204 }
2205
2206 MODULE_ALIAS("ide:*m-floppy*");
2207 module_init(idefloppy_init);
2208 module_exit(idefloppy_exit);
2209 MODULE_LICENSE("GPL");