Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Borislav Petkov | d3f2084 | 2008-02-01 23:09:33 +0100 | [diff] [blame^] | 2 | * IDE ATAPI floppy driver. |
| 3 | * |
Bartlomiej Zolnierkiewicz | 59bca8c | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 4 | * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> |
| 5 | * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> |
| 6 | * Copyright (C) 2005 Bartlomiej Zolnierkiewicz |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * The driver currently doesn't have any fancy features, just the bare |
| 11 | * minimum read/write support. |
| 12 | * |
| 13 | * This driver supports the following IDE floppy drives: |
| 14 | * |
| 15 | * LS-120/240 SuperDisk |
| 16 | * Iomega Zip 100/250 |
| 17 | * Iomega PC Card Clik!/PocketZip |
| 18 | * |
Borislav Petkov | d3f2084 | 2008-02-01 23:09:33 +0100 | [diff] [blame^] | 19 | * For a historical changelog see |
| 20 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | */ |
| 22 | |
| 23 | #define IDEFLOPPY_VERSION "0.99.newide" |
| 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/module.h> |
| 26 | #include <linux/types.h> |
| 27 | #include <linux/string.h> |
| 28 | #include <linux/kernel.h> |
| 29 | #include <linux/delay.h> |
| 30 | #include <linux/timer.h> |
| 31 | #include <linux/mm.h> |
| 32 | #include <linux/interrupt.h> |
| 33 | #include <linux/major.h> |
| 34 | #include <linux/errno.h> |
| 35 | #include <linux/genhd.h> |
| 36 | #include <linux/slab.h> |
| 37 | #include <linux/cdrom.h> |
| 38 | #include <linux/ide.h> |
| 39 | #include <linux/bitops.h> |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 40 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Bartlomiej Zolnierkiewicz | 89636af | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 42 | #include <scsi/scsi_ioctl.h> |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <asm/byteorder.h> |
| 45 | #include <asm/irq.h> |
| 46 | #include <asm/uaccess.h> |
| 47 | #include <asm/io.h> |
| 48 | #include <asm/unaligned.h> |
| 49 | |
| 50 | /* |
| 51 | * The following are used to debug the driver. |
| 52 | */ |
| 53 | #define IDEFLOPPY_DEBUG_LOG 0 |
| 54 | #define IDEFLOPPY_DEBUG_INFO 0 |
| 55 | #define IDEFLOPPY_DEBUG_BUGS 1 |
| 56 | |
| 57 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ |
| 58 | #define IDEFLOPPY_DEBUG( fmt, args... ) |
| 59 | |
| 60 | #if IDEFLOPPY_DEBUG_LOG |
| 61 | #define debug_log printk |
| 62 | #else |
| 63 | #define debug_log(fmt, args... ) do {} while(0) |
| 64 | #endif |
| 65 | |
| 66 | |
| 67 | /* |
| 68 | * Some drives require a longer irq timeout. |
| 69 | */ |
| 70 | #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) |
| 71 | |
| 72 | /* |
| 73 | * After each failed packet command we issue a request sense command |
| 74 | * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times. |
| 75 | */ |
| 76 | #define IDEFLOPPY_MAX_PC_RETRIES 3 |
| 77 | |
| 78 | /* |
| 79 | * With each packet command, we allocate a buffer of |
| 80 | * IDEFLOPPY_PC_BUFFER_SIZE bytes. |
| 81 | */ |
| 82 | #define IDEFLOPPY_PC_BUFFER_SIZE 256 |
| 83 | |
| 84 | /* |
| 85 | * In various places in the driver, we need to allocate storage |
| 86 | * for packet commands and requests, which will remain valid while |
| 87 | * we leave the driver to wait for an interrupt or a timeout event. |
| 88 | */ |
| 89 | #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES) |
| 90 | |
| 91 | /* |
| 92 | * Our view of a packet command. |
| 93 | */ |
| 94 | typedef struct idefloppy_packet_command_s { |
| 95 | u8 c[12]; /* Actual packet bytes */ |
| 96 | int retries; /* On each retry, we increment retries */ |
| 97 | int error; /* Error code */ |
| 98 | int request_transfer; /* Bytes to transfer */ |
| 99 | int actually_transferred; /* Bytes actually transferred */ |
| 100 | int buffer_size; /* Size of our data buffer */ |
| 101 | int b_count; /* Missing/Available data on the current buffer */ |
| 102 | struct request *rq; /* The corresponding request */ |
| 103 | u8 *buffer; /* Data buffer */ |
| 104 | u8 *current_position; /* Pointer into the above buffer */ |
| 105 | void (*callback) (ide_drive_t *); /* Called when this packet command is completed */ |
| 106 | u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */ |
| 107 | unsigned long flags; /* Status/Action bit flags: long for set_bit */ |
| 108 | } idefloppy_pc_t; |
| 109 | |
| 110 | /* |
| 111 | * Packet command flag bits. |
| 112 | */ |
| 113 | #define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */ |
| 114 | #define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */ |
| 115 | #define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */ |
| 116 | #define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */ |
| 117 | #define PC_WRITING 5 /* Data direction */ |
| 118 | |
| 119 | #define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */ |
| 120 | |
| 121 | /* |
| 122 | * Removable Block Access Capabilities Page |
| 123 | */ |
| 124 | typedef struct { |
| 125 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 126 | unsigned page_code :6; /* Page code - Should be 0x1b */ |
| 127 | unsigned reserved1_6 :1; /* Reserved */ |
| 128 | unsigned ps :1; /* Should be 0 */ |
| 129 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 130 | unsigned ps :1; /* Should be 0 */ |
| 131 | unsigned reserved1_6 :1; /* Reserved */ |
| 132 | unsigned page_code :6; /* Page code - Should be 0x1b */ |
| 133 | #else |
| 134 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 135 | #endif |
| 136 | u8 page_length; /* Page Length - Should be 0xa */ |
| 137 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 138 | unsigned reserved2 :6; |
| 139 | unsigned srfp :1; /* Supports reporting progress of format */ |
| 140 | unsigned sflp :1; /* System floppy type device */ |
| 141 | unsigned tlun :3; /* Total logical units supported by the device */ |
| 142 | unsigned reserved3 :3; |
| 143 | unsigned sml :1; /* Single / Multiple lun supported */ |
| 144 | unsigned ncd :1; /* Non cd optical device */ |
| 145 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 146 | unsigned sflp :1; /* System floppy type device */ |
| 147 | unsigned srfp :1; /* Supports reporting progress of format */ |
| 148 | unsigned reserved2 :6; |
| 149 | unsigned ncd :1; /* Non cd optical device */ |
| 150 | unsigned sml :1; /* Single / Multiple lun supported */ |
| 151 | unsigned reserved3 :3; |
| 152 | unsigned tlun :3; /* Total logical units supported by the device */ |
| 153 | #else |
| 154 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 155 | #endif |
| 156 | u8 reserved[8]; |
| 157 | } idefloppy_capabilities_page_t; |
| 158 | |
| 159 | /* |
| 160 | * Flexible disk page. |
| 161 | */ |
| 162 | typedef struct { |
| 163 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 164 | unsigned page_code :6; /* Page code - Should be 0x5 */ |
| 165 | unsigned reserved1_6 :1; /* Reserved */ |
| 166 | unsigned ps :1; /* The device is capable of saving the page */ |
| 167 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 168 | unsigned ps :1; /* The device is capable of saving the page */ |
| 169 | unsigned reserved1_6 :1; /* Reserved */ |
| 170 | unsigned page_code :6; /* Page code - Should be 0x5 */ |
| 171 | #else |
| 172 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 173 | #endif |
| 174 | u8 page_length; /* Page Length - Should be 0x1e */ |
| 175 | u16 transfer_rate; /* In kilobits per second */ |
| 176 | u8 heads, sectors; /* Number of heads, Number of sectors per track */ |
| 177 | u16 sector_size; /* Byes per sector */ |
| 178 | u16 cyls; /* Number of cylinders */ |
| 179 | u8 reserved10[10]; |
| 180 | u8 motor_delay; /* Motor off delay */ |
| 181 | u8 reserved21[7]; |
| 182 | u16 rpm; /* Rotations per minute */ |
| 183 | u8 reserved30[2]; |
| 184 | } idefloppy_flexible_disk_page_t; |
| 185 | |
| 186 | /* |
| 187 | * Format capacity |
| 188 | */ |
| 189 | typedef struct { |
| 190 | u8 reserved[3]; |
| 191 | u8 length; /* Length of the following descriptors in bytes */ |
| 192 | } idefloppy_capacity_header_t; |
| 193 | |
| 194 | typedef struct { |
| 195 | u32 blocks; /* Number of blocks */ |
| 196 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 197 | unsigned dc :2; /* Descriptor Code */ |
| 198 | unsigned reserved :6; |
| 199 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 200 | unsigned reserved :6; |
| 201 | unsigned dc :2; /* Descriptor Code */ |
| 202 | #else |
| 203 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 204 | #endif |
| 205 | u8 length_msb; /* Block Length (MSB)*/ |
| 206 | u16 length; /* Block Length */ |
| 207 | } idefloppy_capacity_descriptor_t; |
| 208 | |
| 209 | #define CAPACITY_INVALID 0x00 |
| 210 | #define CAPACITY_UNFORMATTED 0x01 |
| 211 | #define CAPACITY_CURRENT 0x02 |
| 212 | #define CAPACITY_NO_CARTRIDGE 0x03 |
| 213 | |
| 214 | /* |
| 215 | * Most of our global data which we need to save even as we leave the |
| 216 | * driver due to an interrupt or a timer event is stored in a variable |
| 217 | * of type idefloppy_floppy_t, defined below. |
| 218 | */ |
| 219 | typedef struct ide_floppy_obj { |
| 220 | ide_drive_t *drive; |
| 221 | ide_driver_t *driver; |
| 222 | struct gendisk *disk; |
| 223 | struct kref kref; |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 224 | unsigned int openers; /* protected by BKL for now */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
| 226 | /* Current packet command */ |
| 227 | idefloppy_pc_t *pc; |
| 228 | /* Last failed packet command */ |
| 229 | idefloppy_pc_t *failed_pc; |
| 230 | /* Packet command stack */ |
| 231 | idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK]; |
| 232 | /* Next free packet command storage space */ |
| 233 | int pc_stack_index; |
| 234 | struct request rq_stack[IDEFLOPPY_PC_STACK]; |
| 235 | /* We implement a circular array */ |
| 236 | int rq_stack_index; |
| 237 | |
| 238 | /* |
| 239 | * Last error information |
| 240 | */ |
| 241 | u8 sense_key, asc, ascq; |
| 242 | /* delay this long before sending packet command */ |
| 243 | u8 ticks; |
| 244 | int progress_indication; |
| 245 | |
| 246 | /* |
| 247 | * Device information |
| 248 | */ |
| 249 | /* Current format */ |
| 250 | int blocks, block_size, bs_factor; |
| 251 | /* Last format capacity */ |
| 252 | idefloppy_capacity_descriptor_t capacity; |
| 253 | /* Copy of the flexible disk page */ |
| 254 | idefloppy_flexible_disk_page_t flexible_disk_page; |
| 255 | /* Write protect */ |
| 256 | int wp; |
| 257 | /* Supports format progress report */ |
| 258 | int srfp; |
| 259 | /* Status/Action flags */ |
| 260 | unsigned long flags; |
| 261 | } idefloppy_floppy_t; |
| 262 | |
Bartlomiej Zolnierkiewicz | c40d3d3 | 2005-08-18 22:09:21 +0200 | [diff] [blame] | 263 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
| 265 | /* |
| 266 | * Floppy flag bits values. |
| 267 | */ |
| 268 | #define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */ |
| 269 | #define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */ |
| 270 | #define IDEFLOPPY_USE_READ12 2 /* Use READ12/WRITE12 or READ10/WRITE10 */ |
| 271 | #define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */ |
| 272 | #define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */ |
| 273 | #define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */ |
| 274 | |
| 275 | /* |
| 276 | * ATAPI floppy drive packet commands |
| 277 | */ |
| 278 | #define IDEFLOPPY_FORMAT_UNIT_CMD 0x04 |
| 279 | #define IDEFLOPPY_INQUIRY_CMD 0x12 |
| 280 | #define IDEFLOPPY_MODE_SELECT_CMD 0x55 |
| 281 | #define IDEFLOPPY_MODE_SENSE_CMD 0x5a |
| 282 | #define IDEFLOPPY_READ10_CMD 0x28 |
| 283 | #define IDEFLOPPY_READ12_CMD 0xa8 |
| 284 | #define IDEFLOPPY_READ_CAPACITY_CMD 0x23 |
| 285 | #define IDEFLOPPY_REQUEST_SENSE_CMD 0x03 |
| 286 | #define IDEFLOPPY_PREVENT_REMOVAL_CMD 0x1e |
| 287 | #define IDEFLOPPY_SEEK_CMD 0x2b |
| 288 | #define IDEFLOPPY_START_STOP_CMD 0x1b |
| 289 | #define IDEFLOPPY_TEST_UNIT_READY_CMD 0x00 |
| 290 | #define IDEFLOPPY_VERIFY_CMD 0x2f |
| 291 | #define IDEFLOPPY_WRITE10_CMD 0x2a |
| 292 | #define IDEFLOPPY_WRITE12_CMD 0xaa |
| 293 | #define IDEFLOPPY_WRITE_VERIFY_CMD 0x2e |
| 294 | |
| 295 | /* |
| 296 | * Defines for the mode sense command |
| 297 | */ |
| 298 | #define MODE_SENSE_CURRENT 0x00 |
| 299 | #define MODE_SENSE_CHANGEABLE 0x01 |
| 300 | #define MODE_SENSE_DEFAULT 0x02 |
| 301 | #define MODE_SENSE_SAVED 0x03 |
| 302 | |
| 303 | /* |
| 304 | * IOCTLs used in low-level formatting. |
| 305 | */ |
| 306 | |
| 307 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 |
| 308 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 |
| 309 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 |
| 310 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 |
| 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | /* |
| 313 | * Error codes which are returned in rq->errors to the higher part |
| 314 | * of the driver. |
| 315 | */ |
| 316 | #define IDEFLOPPY_ERROR_GENERAL 101 |
| 317 | |
| 318 | /* |
| 319 | * The following is used to format the general configuration word of |
| 320 | * the ATAPI IDENTIFY DEVICE command. |
| 321 | */ |
| 322 | struct idefloppy_id_gcw { |
| 323 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 324 | unsigned packet_size :2; /* Packet Size */ |
| 325 | unsigned reserved234 :3; /* Reserved */ |
| 326 | unsigned drq_type :2; /* Command packet DRQ type */ |
| 327 | unsigned removable :1; /* Removable media */ |
| 328 | unsigned device_type :5; /* Device type */ |
| 329 | unsigned reserved13 :1; /* Reserved */ |
| 330 | unsigned protocol :2; /* Protocol type */ |
| 331 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 332 | unsigned protocol :2; /* Protocol type */ |
| 333 | unsigned reserved13 :1; /* Reserved */ |
| 334 | unsigned device_type :5; /* Device type */ |
| 335 | unsigned removable :1; /* Removable media */ |
| 336 | unsigned drq_type :2; /* Command packet DRQ type */ |
| 337 | unsigned reserved234 :3; /* Reserved */ |
| 338 | unsigned packet_size :2; /* Packet Size */ |
| 339 | #else |
| 340 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 341 | #endif |
| 342 | }; |
| 343 | |
| 344 | /* |
| 345 | * INQUIRY packet command - Data Format |
| 346 | */ |
| 347 | typedef struct { |
| 348 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 349 | unsigned device_type :5; /* Peripheral Device Type */ |
| 350 | unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */ |
| 351 | unsigned reserved1_6t0 :7; /* Reserved */ |
| 352 | unsigned rmb :1; /* Removable Medium Bit */ |
| 353 | unsigned ansi_version :3; /* ANSI Version */ |
| 354 | unsigned ecma_version :3; /* ECMA Version */ |
| 355 | unsigned iso_version :2; /* ISO Version */ |
| 356 | unsigned response_format :4; /* Response Data Format */ |
| 357 | unsigned reserved3_45 :2; /* Reserved */ |
| 358 | unsigned reserved3_6 :1; /* TrmIOP - Reserved */ |
| 359 | unsigned reserved3_7 :1; /* AENC - Reserved */ |
| 360 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 361 | unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */ |
| 362 | unsigned device_type :5; /* Peripheral Device Type */ |
| 363 | unsigned rmb :1; /* Removable Medium Bit */ |
| 364 | unsigned reserved1_6t0 :7; /* Reserved */ |
| 365 | unsigned iso_version :2; /* ISO Version */ |
| 366 | unsigned ecma_version :3; /* ECMA Version */ |
| 367 | unsigned ansi_version :3; /* ANSI Version */ |
| 368 | unsigned reserved3_7 :1; /* AENC - Reserved */ |
| 369 | unsigned reserved3_6 :1; /* TrmIOP - Reserved */ |
| 370 | unsigned reserved3_45 :2; /* Reserved */ |
| 371 | unsigned response_format :4; /* Response Data Format */ |
| 372 | #else |
| 373 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 374 | #endif |
| 375 | u8 additional_length; /* Additional Length (total_length-4) */ |
| 376 | u8 rsv5, rsv6, rsv7; /* Reserved */ |
| 377 | u8 vendor_id[8]; /* Vendor Identification */ |
| 378 | u8 product_id[16]; /* Product Identification */ |
| 379 | u8 revision_level[4]; /* Revision Level */ |
| 380 | u8 vendor_specific[20]; /* Vendor Specific - Optional */ |
| 381 | u8 reserved56t95[40]; /* Reserved - Optional */ |
| 382 | /* Additional information may be returned */ |
| 383 | } idefloppy_inquiry_result_t; |
| 384 | |
| 385 | /* |
| 386 | * REQUEST SENSE packet command result - Data Format. |
| 387 | */ |
| 388 | typedef struct { |
| 389 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 390 | unsigned error_code :7; /* Current error (0x70) */ |
| 391 | unsigned valid :1; /* The information field conforms to SFF-8070i */ |
| 392 | u8 reserved1 :8; /* Reserved */ |
| 393 | unsigned sense_key :4; /* Sense Key */ |
| 394 | unsigned reserved2_4 :1; /* Reserved */ |
| 395 | unsigned ili :1; /* Incorrect Length Indicator */ |
| 396 | unsigned reserved2_67 :2; |
| 397 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 398 | unsigned valid :1; /* The information field conforms to SFF-8070i */ |
| 399 | unsigned error_code :7; /* Current error (0x70) */ |
| 400 | u8 reserved1 :8; /* Reserved */ |
| 401 | unsigned reserved2_67 :2; |
| 402 | unsigned ili :1; /* Incorrect Length Indicator */ |
| 403 | unsigned reserved2_4 :1; /* Reserved */ |
| 404 | unsigned sense_key :4; /* Sense Key */ |
| 405 | #else |
| 406 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 407 | #endif |
| 408 | u32 information __attribute__ ((packed)); |
| 409 | u8 asl; /* Additional sense length (n-7) */ |
| 410 | u32 command_specific; /* Additional command specific information */ |
| 411 | u8 asc; /* Additional Sense Code */ |
| 412 | u8 ascq; /* Additional Sense Code Qualifier */ |
| 413 | u8 replaceable_unit_code; /* Field Replaceable Unit Code */ |
| 414 | u8 sksv[3]; |
| 415 | u8 pad[2]; /* Padding to 20 bytes */ |
| 416 | } idefloppy_request_sense_result_t; |
| 417 | |
| 418 | /* |
| 419 | * Pages of the SELECT SENSE / MODE SENSE packet commands. |
| 420 | */ |
| 421 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b |
| 422 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 |
| 423 | |
| 424 | /* |
| 425 | * Mode Parameter Header for the MODE SENSE packet command |
| 426 | */ |
| 427 | typedef struct { |
| 428 | u16 mode_data_length; /* Length of the following data transfer */ |
| 429 | u8 medium_type; /* Medium Type */ |
| 430 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 431 | unsigned reserved3 :7; |
| 432 | unsigned wp :1; /* Write protect */ |
| 433 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 434 | unsigned wp :1; /* Write protect */ |
| 435 | unsigned reserved3 :7; |
| 436 | #else |
| 437 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 438 | #endif |
| 439 | u8 reserved[4]; |
| 440 | } idefloppy_mode_parameter_header_t; |
| 441 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 442 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
| 444 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) |
| 445 | |
| 446 | #define ide_floppy_g(disk) \ |
| 447 | container_of((disk)->private_data, struct ide_floppy_obj, driver) |
| 448 | |
| 449 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) |
| 450 | { |
| 451 | struct ide_floppy_obj *floppy = NULL; |
| 452 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 453 | mutex_lock(&idefloppy_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | floppy = ide_floppy_g(disk); |
| 455 | if (floppy) |
| 456 | kref_get(&floppy->kref); |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 457 | mutex_unlock(&idefloppy_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | return floppy; |
| 459 | } |
| 460 | |
| 461 | static void ide_floppy_release(struct kref *); |
| 462 | |
| 463 | static void ide_floppy_put(struct ide_floppy_obj *floppy) |
| 464 | { |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 465 | mutex_lock(&idefloppy_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | kref_put(&floppy->kref, ide_floppy_release); |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 467 | mutex_unlock(&idefloppy_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | } |
| 469 | |
| 470 | /* |
| 471 | * Too bad. The drive wants to send us data which we are not ready to accept. |
| 472 | * Just throw it away. |
| 473 | */ |
| 474 | static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount) |
| 475 | { |
| 476 | while (bcount--) |
| 477 | (void) HWIF(drive)->INB(IDE_DATA_REG); |
| 478 | } |
| 479 | |
| 480 | #if IDEFLOPPY_DEBUG_BUGS |
| 481 | static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount) |
| 482 | { |
| 483 | while (bcount--) |
| 484 | HWIF(drive)->OUTB(0, IDE_DATA_REG); |
| 485 | } |
| 486 | #endif /* IDEFLOPPY_DEBUG_BUGS */ |
| 487 | |
| 488 | |
| 489 | /* |
| 490 | * idefloppy_do_end_request is used to finish servicing a request. |
| 491 | * |
| 492 | * For read/write requests, we will call ide_end_request to pass to the |
| 493 | * next buffer. |
| 494 | */ |
| 495 | static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
| 496 | { |
| 497 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 498 | struct request *rq = HWGROUP(drive)->rq; |
| 499 | int error; |
| 500 | |
| 501 | debug_log(KERN_INFO "Reached idefloppy_end_request\n"); |
| 502 | |
| 503 | switch (uptodate) { |
| 504 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
| 505 | case 1: error = 0; break; |
| 506 | default: error = uptodate; |
| 507 | } |
| 508 | if (error) |
| 509 | floppy->failed_pc = NULL; |
| 510 | /* Why does this happen? */ |
| 511 | if (!rq) |
| 512 | return 0; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 513 | if (!blk_special_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | /* our real local end request function */ |
| 515 | ide_end_request(drive, uptodate, nsecs); |
| 516 | return 0; |
| 517 | } |
| 518 | rq->errors = error; |
| 519 | /* fixme: need to move this local also */ |
| 520 | ide_end_drive_cmd(drive, 0, 0); |
| 521 | return 0; |
| 522 | } |
| 523 | |
| 524 | static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) |
| 525 | { |
| 526 | struct request *rq = pc->rq; |
| 527 | struct bio_vec *bvec; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 528 | struct req_iterator iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | unsigned long flags; |
| 530 | char *data; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 531 | int count, done = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 533 | rq_for_each_segment(bvec, rq, iter) { |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 534 | if (!bcount) |
| 535 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 537 | count = min(bvec->bv_len, bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 539 | data = bvec_kmap_irq(bvec, &flags); |
| 540 | drive->hwif->atapi_input_bytes(drive, data, count); |
| 541 | bvec_kunmap_irq(data, &flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 543 | bcount -= count; |
| 544 | pc->b_count += count; |
| 545 | done += count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | idefloppy_do_end_request(drive, 1, done >> 9); |
| 549 | |
| 550 | if (bcount) { |
| 551 | printk(KERN_ERR "%s: leftover data in idefloppy_input_buffers, bcount == %d\n", drive->name, bcount); |
| 552 | idefloppy_discard_data(drive, bcount); |
| 553 | } |
| 554 | } |
| 555 | |
| 556 | static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) |
| 557 | { |
| 558 | struct request *rq = pc->rq; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 559 | struct req_iterator iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | struct bio_vec *bvec; |
| 561 | unsigned long flags; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 562 | int count, done = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | char *data; |
| 564 | |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 565 | rq_for_each_segment(bvec, rq, iter) { |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 566 | if (!bcount) |
| 567 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 569 | count = min(bvec->bv_len, bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 571 | data = bvec_kmap_irq(bvec, &flags); |
| 572 | drive->hwif->atapi_output_bytes(drive, data, count); |
| 573 | bvec_kunmap_irq(data, &flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 575 | bcount -= count; |
| 576 | pc->b_count += count; |
| 577 | done += count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | idefloppy_do_end_request(drive, 1, done >> 9); |
| 581 | |
Jan Beulich | c7ea4b3 | 2005-06-23 00:09:59 -0700 | [diff] [blame] | 582 | #if IDEFLOPPY_DEBUG_BUGS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | if (bcount) { |
| 584 | printk(KERN_ERR "%s: leftover data in idefloppy_output_buffers, bcount == %d\n", drive->name, bcount); |
| 585 | idefloppy_write_zeros(drive, bcount); |
| 586 | } |
Jan Beulich | c7ea4b3 | 2005-06-23 00:09:59 -0700 | [diff] [blame] | 587 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | } |
| 589 | |
| 590 | static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc) |
| 591 | { |
| 592 | struct request *rq = pc->rq; |
| 593 | struct bio *bio = rq->bio; |
| 594 | |
| 595 | while ((bio = rq->bio) != NULL) |
| 596 | idefloppy_do_end_request(drive, 1, 0); |
| 597 | } |
| 598 | |
| 599 | /* |
| 600 | * idefloppy_queue_pc_head generates a new packet command request in front |
| 601 | * of the request queue, before the current request, so that it will be |
| 602 | * processed immediately, on the next pass through the driver. |
| 603 | */ |
| 604 | static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq) |
| 605 | { |
| 606 | struct ide_floppy_obj *floppy = drive->driver_data; |
| 607 | |
| 608 | ide_init_drive_cmd(rq); |
| 609 | rq->buffer = (char *) pc; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 610 | rq->cmd_type = REQ_TYPE_SPECIAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | rq->rq_disk = floppy->disk; |
| 612 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); |
| 613 | } |
| 614 | |
| 615 | static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive) |
| 616 | { |
| 617 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 618 | |
| 619 | if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK) |
| 620 | floppy->pc_stack_index=0; |
| 621 | return (&floppy->pc_stack[floppy->pc_stack_index++]); |
| 622 | } |
| 623 | |
| 624 | static struct request *idefloppy_next_rq_storage (ide_drive_t *drive) |
| 625 | { |
| 626 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 627 | |
| 628 | if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) |
| 629 | floppy->rq_stack_index = 0; |
| 630 | return (&floppy->rq_stack[floppy->rq_stack_index++]); |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | * idefloppy_analyze_error is called on each failed packet command retry |
| 635 | * to analyze the request sense. |
| 636 | */ |
| 637 | static void idefloppy_analyze_error (ide_drive_t *drive,idefloppy_request_sense_result_t *result) |
| 638 | { |
| 639 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 640 | |
| 641 | floppy->sense_key = result->sense_key; |
| 642 | floppy->asc = result->asc; |
| 643 | floppy->ascq = result->ascq; |
| 644 | floppy->progress_indication = result->sksv[0] & 0x80 ? |
| 645 | (u16)get_unaligned((u16 *)(result->sksv+1)):0x10000; |
| 646 | if (floppy->failed_pc) |
| 647 | debug_log(KERN_INFO "ide-floppy: pc = %x, sense key = %x, " |
| 648 | "asc = %x, ascq = %x\n", floppy->failed_pc->c[0], |
| 649 | result->sense_key, result->asc, result->ascq); |
| 650 | else |
| 651 | debug_log(KERN_INFO "ide-floppy: sense key = %x, asc = %x, " |
| 652 | "ascq = %x\n", result->sense_key, |
| 653 | result->asc, result->ascq); |
| 654 | } |
| 655 | |
| 656 | static void idefloppy_request_sense_callback (ide_drive_t *drive) |
| 657 | { |
| 658 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 659 | |
| 660 | debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); |
| 661 | |
| 662 | if (!floppy->pc->error) { |
| 663 | idefloppy_analyze_error(drive,(idefloppy_request_sense_result_t *) floppy->pc->buffer); |
| 664 | idefloppy_do_end_request(drive, 1, 0); |
| 665 | } else { |
| 666 | printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting request!\n"); |
| 667 | idefloppy_do_end_request(drive, 0, 0); |
| 668 | } |
| 669 | } |
| 670 | |
| 671 | /* |
| 672 | * General packet command callback function. |
| 673 | */ |
| 674 | static void idefloppy_pc_callback (ide_drive_t *drive) |
| 675 | { |
| 676 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 677 | |
| 678 | debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); |
| 679 | |
| 680 | idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0); |
| 681 | } |
| 682 | |
| 683 | /* |
| 684 | * idefloppy_init_pc initializes a packet command. |
| 685 | */ |
| 686 | static void idefloppy_init_pc (idefloppy_pc_t *pc) |
| 687 | { |
| 688 | memset(pc->c, 0, 12); |
| 689 | pc->retries = 0; |
| 690 | pc->flags = 0; |
| 691 | pc->request_transfer = 0; |
| 692 | pc->buffer = pc->pc_buffer; |
| 693 | pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE; |
| 694 | pc->callback = &idefloppy_pc_callback; |
| 695 | } |
| 696 | |
| 697 | static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc) |
| 698 | { |
| 699 | idefloppy_init_pc(pc); |
| 700 | pc->c[0] = IDEFLOPPY_REQUEST_SENSE_CMD; |
| 701 | pc->c[4] = 255; |
| 702 | pc->request_transfer = 18; |
| 703 | pc->callback = &idefloppy_request_sense_callback; |
| 704 | } |
| 705 | |
| 706 | /* |
| 707 | * idefloppy_retry_pc is called when an error was detected during the |
| 708 | * last packet command. We queue a request sense packet command in |
| 709 | * the head of the request list. |
| 710 | */ |
| 711 | static void idefloppy_retry_pc (ide_drive_t *drive) |
| 712 | { |
| 713 | idefloppy_pc_t *pc; |
| 714 | struct request *rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | |
Bartlomiej Zolnierkiewicz | 0e38a66 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 716 | (void)drive->hwif->INB(IDE_ERROR_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | pc = idefloppy_next_pc_storage(drive); |
| 718 | rq = idefloppy_next_rq_storage(drive); |
| 719 | idefloppy_create_request_sense_cmd(pc); |
| 720 | idefloppy_queue_pc_head(drive, pc, rq); |
| 721 | } |
| 722 | |
| 723 | /* |
| 724 | * idefloppy_pc_intr is the usual interrupt handler which will be called |
| 725 | * during a packet command. |
| 726 | */ |
| 727 | static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive) |
| 728 | { |
| 729 | idefloppy_floppy_t *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 730 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | idefloppy_pc_t *pc = floppy->pc; |
| 732 | struct request *rq = pc->rq; |
| 733 | unsigned int temp; |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 734 | u16 bcount; |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 735 | u8 stat, ireason; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | |
| 737 | debug_log(KERN_INFO "ide-floppy: Reached %s interrupt handler\n", |
| 738 | __FUNCTION__); |
| 739 | |
| 740 | if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { |
| 741 | if (HWIF(drive)->ide_dma_end(drive)) { |
| 742 | set_bit(PC_DMA_ERROR, &pc->flags); |
| 743 | } else { |
| 744 | pc->actually_transferred = pc->request_transfer; |
| 745 | idefloppy_update_buffers(drive, pc); |
| 746 | } |
| 747 | debug_log(KERN_INFO "ide-floppy: DMA finished\n"); |
| 748 | } |
| 749 | |
| 750 | /* Clear the interrupt */ |
Bartlomiej Zolnierkiewicz | 22c525b | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 751 | stat = drive->hwif->INB(IDE_STATUS_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
Bartlomiej Zolnierkiewicz | 22c525b | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 753 | if ((stat & DRQ_STAT) == 0) { /* No more interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | debug_log(KERN_INFO "Packet command completed, %d bytes " |
| 755 | "transferred\n", pc->actually_transferred); |
| 756 | clear_bit(PC_DMA_IN_PROGRESS, &pc->flags); |
| 757 | |
Ingo Molnar | 366c7f5 | 2006-07-03 00:25:25 -0700 | [diff] [blame] | 758 | local_irq_enable_in_hardirq(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | |
Bartlomiej Zolnierkiewicz | 22c525b | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 760 | if ((stat & ERR_STAT) || test_bit(PC_DMA_ERROR, &pc->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | /* Error detected */ |
| 762 | debug_log(KERN_INFO "ide-floppy: %s: I/O error\n", |
| 763 | drive->name); |
| 764 | rq->errors++; |
| 765 | if (pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) { |
| 766 | printk(KERN_ERR "ide-floppy: I/O error in " |
| 767 | "request sense command\n"); |
| 768 | return ide_do_reset(drive); |
| 769 | } |
| 770 | /* Retry operation */ |
| 771 | idefloppy_retry_pc(drive); |
| 772 | /* queued, but not started */ |
| 773 | return ide_stopped; |
| 774 | } |
| 775 | pc->error = 0; |
| 776 | if (floppy->failed_pc == pc) |
| 777 | floppy->failed_pc = NULL; |
| 778 | /* Command finished - Call the callback function */ |
| 779 | pc->callback(drive); |
| 780 | return ide_stopped; |
| 781 | } |
| 782 | |
| 783 | if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { |
| 784 | printk(KERN_ERR "ide-floppy: The floppy wants to issue " |
| 785 | "more interrupts in DMA mode\n"); |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 786 | ide_dma_off(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | return ide_do_reset(drive); |
| 788 | } |
| 789 | |
| 790 | /* Get the number of bytes to transfer */ |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 791 | bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) | |
| 792 | hwif->INB(IDE_BCOUNTL_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | /* on this interrupt */ |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 794 | ireason = hwif->INB(IDE_IREASON_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 796 | if (ireason & CD) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | printk(KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n"); |
| 798 | return ide_do_reset(drive); |
| 799 | } |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 800 | if (((ireason & IO) == IO) == test_bit(PC_WRITING, &pc->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | /* Hopefully, we will never get here */ |
| 802 | printk(KERN_ERR "ide-floppy: We wanted to %s, ", |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 803 | (ireason & IO) ? "Write" : "Read"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | printk(KERN_ERR "but the floppy wants us to %s !\n", |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 805 | (ireason & IO) ? "Read" : "Write"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | return ide_do_reset(drive); |
| 807 | } |
| 808 | if (!test_bit(PC_WRITING, &pc->flags)) { |
| 809 | /* Reading - Check that we have enough space */ |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 810 | temp = pc->actually_transferred + bcount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | if (temp > pc->request_transfer) { |
| 812 | if (temp > pc->buffer_size) { |
| 813 | printk(KERN_ERR "ide-floppy: The floppy wants " |
| 814 | "to send us more data than expected " |
| 815 | "- discarding data\n"); |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 816 | idefloppy_discard_data(drive, bcount); |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 817 | BUG_ON(HWGROUP(drive)->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | ide_set_handler(drive, |
| 819 | &idefloppy_pc_intr, |
| 820 | IDEFLOPPY_WAIT_CMD, |
| 821 | NULL); |
| 822 | return ide_started; |
| 823 | } |
| 824 | debug_log(KERN_NOTICE "ide-floppy: The floppy wants to " |
| 825 | "send us more data than expected - " |
| 826 | "allowing transfer\n"); |
| 827 | } |
| 828 | } |
| 829 | if (test_bit(PC_WRITING, &pc->flags)) { |
| 830 | if (pc->buffer != NULL) |
| 831 | /* Write the current buffer */ |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 832 | hwif->atapi_output_bytes(drive, pc->current_position, |
| 833 | bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | else |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 835 | idefloppy_output_buffers(drive, pc, bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | } else { |
| 837 | if (pc->buffer != NULL) |
| 838 | /* Read the current buffer */ |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 839 | hwif->atapi_input_bytes(drive, pc->current_position, |
| 840 | bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | else |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 842 | idefloppy_input_buffers(drive, pc, bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | } |
| 844 | /* Update the current position */ |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 845 | pc->actually_transferred += bcount; |
| 846 | pc->current_position += bcount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 848 | BUG_ON(HWGROUP(drive)->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); /* And set the interrupt handler again */ |
| 850 | return ide_started; |
| 851 | } |
| 852 | |
| 853 | /* |
| 854 | * This is the original routine that did the packet transfer. |
| 855 | * It fails at high speeds on the Iomega ZIP drive, so there's a slower version |
| 856 | * for that drive below. The algorithm is chosen based on drive type |
| 857 | */ |
| 858 | static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive) |
| 859 | { |
| 860 | ide_startstop_t startstop; |
| 861 | idefloppy_floppy_t *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 862 | u8 ireason; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
| 864 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { |
| 865 | printk(KERN_ERR "ide-floppy: Strange, packet command " |
| 866 | "initiated yet DRQ isn't asserted\n"); |
| 867 | return startstop; |
| 868 | } |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 869 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
| 870 | if ((ireason & CD) == 0 || (ireason & IO)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while " |
| 872 | "issuing a packet command\n"); |
| 873 | return ide_do_reset(drive); |
| 874 | } |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 875 | BUG_ON(HWGROUP(drive)->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | /* Set the interrupt routine */ |
| 877 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); |
| 878 | /* Send the actual packet */ |
| 879 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); |
| 880 | return ide_started; |
| 881 | } |
| 882 | |
| 883 | |
| 884 | /* |
| 885 | * What we have here is a classic case of a top half / bottom half |
| 886 | * interrupt service routine. In interrupt mode, the device sends |
| 887 | * an interrupt to signal it's ready to receive a packet. However, |
| 888 | * we need to delay about 2-3 ticks before issuing the packet or we |
| 889 | * gets in trouble. |
| 890 | * |
| 891 | * So, follow carefully. transfer_pc1 is called as an interrupt (or |
| 892 | * directly). In either case, when the device says it's ready for a |
| 893 | * packet, we schedule the packet transfer to occur about 2-3 ticks |
| 894 | * later in transfer_pc2. |
| 895 | */ |
| 896 | static int idefloppy_transfer_pc2 (ide_drive_t *drive) |
| 897 | { |
| 898 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 899 | |
| 900 | /* Send the actual packet */ |
| 901 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); |
| 902 | /* Timeout for the packet command */ |
| 903 | return IDEFLOPPY_WAIT_CMD; |
| 904 | } |
| 905 | |
| 906 | static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive) |
| 907 | { |
| 908 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 909 | ide_startstop_t startstop; |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 910 | u8 ireason; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | |
| 912 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { |
| 913 | printk(KERN_ERR "ide-floppy: Strange, packet command " |
| 914 | "initiated yet DRQ isn't asserted\n"); |
| 915 | return startstop; |
| 916 | } |
Bartlomiej Zolnierkiewicz | 8e7657a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 917 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
| 918 | if ((ireason & CD) == 0 || (ireason & IO)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) " |
| 920 | "while issuing a packet command\n"); |
| 921 | return ide_do_reset(drive); |
| 922 | } |
| 923 | /* |
| 924 | * The following delay solves a problem with ATAPI Zip 100 drives |
| 925 | * where the Busy flag was apparently being deasserted before the |
| 926 | * unit was ready to receive data. This was happening on a |
| 927 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, |
| 928 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually |
| 929 | * used until after the packet is moved in about 50 msec. |
| 930 | */ |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 931 | BUG_ON(HWGROUP(drive)->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | ide_set_handler(drive, |
| 933 | &idefloppy_pc_intr, /* service routine for packet command */ |
| 934 | floppy->ticks, /* wait this long before "failing" */ |
| 935 | &idefloppy_transfer_pc2); /* fail == transfer_pc2 */ |
| 936 | return ide_started; |
| 937 | } |
| 938 | |
| 939 | /** |
| 940 | * idefloppy_should_report_error() |
| 941 | * |
| 942 | * Supresses error messages resulting from Medium not present |
| 943 | */ |
| 944 | static inline int idefloppy_should_report_error(idefloppy_floppy_t *floppy) |
| 945 | { |
| 946 | if (floppy->sense_key == 0x02 && |
| 947 | floppy->asc == 0x3a && |
| 948 | floppy->ascq == 0x00) |
| 949 | return 0; |
| 950 | return 1; |
| 951 | } |
| 952 | |
| 953 | /* |
| 954 | * Issue a packet command |
| 955 | */ |
| 956 | static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc) |
| 957 | { |
| 958 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 959 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | ide_handler_t *pkt_xfer_routine; |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 961 | u16 bcount; |
Bartlomiej Zolnierkiewicz | e5f9f5a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 962 | u8 dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | if (floppy->failed_pc == NULL && |
| 965 | pc->c[0] != IDEFLOPPY_REQUEST_SENSE_CMD) |
| 966 | floppy->failed_pc = pc; |
| 967 | /* Set the current packet command */ |
| 968 | floppy->pc = pc; |
| 969 | |
| 970 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES || |
| 971 | test_bit(PC_ABORT, &pc->flags)) { |
| 972 | /* |
| 973 | * We will "abort" retrying a packet command in case |
| 974 | * a legitimate error code was received. |
| 975 | */ |
| 976 | if (!test_bit(PC_ABORT, &pc->flags)) { |
| 977 | if (!test_bit(PC_SUPPRESS_ERROR, &pc->flags)) { |
| 978 | if (idefloppy_should_report_error(floppy)) |
| 979 | printk(KERN_ERR "ide-floppy: %s: I/O error, " |
| 980 | "pc = %2x, key = %2x, " |
| 981 | "asc = %2x, ascq = %2x\n", |
| 982 | drive->name, pc->c[0], |
| 983 | floppy->sense_key, |
| 984 | floppy->asc, floppy->ascq); |
| 985 | } |
| 986 | /* Giving up */ |
| 987 | pc->error = IDEFLOPPY_ERROR_GENERAL; |
| 988 | } |
| 989 | floppy->failed_pc = NULL; |
| 990 | pc->callback(drive); |
| 991 | return ide_stopped; |
| 992 | } |
| 993 | |
| 994 | debug_log(KERN_INFO "Retry number - %d\n",pc->retries); |
| 995 | |
| 996 | pc->retries++; |
| 997 | /* We haven't transferred any data yet */ |
| 998 | pc->actually_transferred = 0; |
| 999 | pc->current_position = pc->buffer; |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 1000 | bcount = min(pc->request_transfer, 63 * 1024); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 1002 | if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) |
| 1003 | ide_dma_off(drive); |
| 1004 | |
Bartlomiej Zolnierkiewicz | e5f9f5a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 1005 | dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | |
| 1007 | if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma) |
Bartlomiej Zolnierkiewicz | e5f9f5a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 1008 | dma = !hwif->dma_setup(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | |
Bartlomiej Zolnierkiewicz | 2fc5738 | 2008-01-25 22:17:13 +0100 | [diff] [blame] | 1010 | ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK | |
| 1011 | IDE_TFLAG_OUT_DEVICE, bcount, dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | |
Bartlomiej Zolnierkiewicz | e5f9f5a | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 1013 | if (dma) { /* Begin DMA, if necessary */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | set_bit(PC_DMA_IN_PROGRESS, &pc->flags); |
| 1015 | hwif->dma_start(drive); |
| 1016 | } |
| 1017 | |
| 1018 | /* Can we transfer the packet when we get the interrupt or wait? */ |
| 1019 | if (test_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) { |
| 1020 | /* wait */ |
| 1021 | pkt_xfer_routine = &idefloppy_transfer_pc1; |
| 1022 | } else { |
| 1023 | /* immediate */ |
| 1024 | pkt_xfer_routine = &idefloppy_transfer_pc; |
| 1025 | } |
| 1026 | |
| 1027 | if (test_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) { |
| 1028 | /* Issue the packet command */ |
| 1029 | ide_execute_command(drive, WIN_PACKETCMD, |
| 1030 | pkt_xfer_routine, |
| 1031 | IDEFLOPPY_WAIT_CMD, |
| 1032 | NULL); |
| 1033 | return ide_started; |
| 1034 | } else { |
| 1035 | /* Issue the packet command */ |
| 1036 | HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG); |
| 1037 | return (*pkt_xfer_routine) (drive); |
| 1038 | } |
| 1039 | } |
| 1040 | |
| 1041 | static void idefloppy_rw_callback (ide_drive_t *drive) |
| 1042 | { |
| 1043 | debug_log(KERN_INFO "ide-floppy: Reached idefloppy_rw_callback\n"); |
| 1044 | |
| 1045 | idefloppy_do_end_request(drive, 1, 0); |
| 1046 | return; |
| 1047 | } |
| 1048 | |
| 1049 | static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent) |
| 1050 | { |
| 1051 | debug_log(KERN_INFO "ide-floppy: creating prevent removal command, " |
| 1052 | "prevent = %d\n", prevent); |
| 1053 | |
| 1054 | idefloppy_init_pc(pc); |
| 1055 | pc->c[0] = IDEFLOPPY_PREVENT_REMOVAL_CMD; |
| 1056 | pc->c[4] = prevent; |
| 1057 | } |
| 1058 | |
| 1059 | static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc) |
| 1060 | { |
| 1061 | idefloppy_init_pc(pc); |
| 1062 | pc->c[0] = IDEFLOPPY_READ_CAPACITY_CMD; |
| 1063 | pc->c[7] = 255; |
| 1064 | pc->c[8] = 255; |
| 1065 | pc->request_transfer = 255; |
| 1066 | } |
| 1067 | |
| 1068 | static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l, |
| 1069 | int flags) |
| 1070 | { |
| 1071 | idefloppy_init_pc(pc); |
| 1072 | pc->c[0] = IDEFLOPPY_FORMAT_UNIT_CMD; |
| 1073 | pc->c[1] = 0x17; |
| 1074 | |
| 1075 | memset(pc->buffer, 0, 12); |
| 1076 | pc->buffer[1] = 0xA2; |
| 1077 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ |
| 1078 | |
| 1079 | if (flags & 1) /* Verify bit on... */ |
| 1080 | pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */ |
| 1081 | pc->buffer[3] = 8; |
| 1082 | |
| 1083 | put_unaligned(htonl(b), (unsigned int *)(&pc->buffer[4])); |
| 1084 | put_unaligned(htonl(l), (unsigned int *)(&pc->buffer[8])); |
| 1085 | pc->buffer_size=12; |
| 1086 | set_bit(PC_WRITING, &pc->flags); |
| 1087 | } |
| 1088 | |
| 1089 | /* |
| 1090 | * A mode sense command is used to "sense" floppy parameters. |
| 1091 | */ |
| 1092 | static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type) |
| 1093 | { |
| 1094 | u16 length = sizeof(idefloppy_mode_parameter_header_t); |
| 1095 | |
| 1096 | idefloppy_init_pc(pc); |
| 1097 | pc->c[0] = IDEFLOPPY_MODE_SENSE_CMD; |
| 1098 | pc->c[1] = 0; |
| 1099 | pc->c[2] = page_code + (type << 6); |
| 1100 | |
| 1101 | switch (page_code) { |
| 1102 | case IDEFLOPPY_CAPABILITIES_PAGE: |
| 1103 | length += 12; |
| 1104 | break; |
| 1105 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: |
| 1106 | length += 32; |
| 1107 | break; |
| 1108 | default: |
| 1109 | printk(KERN_ERR "ide-floppy: unsupported page code " |
| 1110 | "in create_mode_sense_cmd\n"); |
| 1111 | } |
| 1112 | put_unaligned(htons(length), (u16 *) &pc->c[7]); |
| 1113 | pc->request_transfer = length; |
| 1114 | } |
| 1115 | |
| 1116 | static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start) |
| 1117 | { |
| 1118 | idefloppy_init_pc(pc); |
| 1119 | pc->c[0] = IDEFLOPPY_START_STOP_CMD; |
| 1120 | pc->c[4] = start; |
| 1121 | } |
| 1122 | |
| 1123 | static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc) |
| 1124 | { |
| 1125 | idefloppy_init_pc(pc); |
| 1126 | pc->c[0] = IDEFLOPPY_TEST_UNIT_READY_CMD; |
| 1127 | } |
| 1128 | |
| 1129 | static void idefloppy_create_rw_cmd (idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq, unsigned long sector) |
| 1130 | { |
| 1131 | int block = sector / floppy->bs_factor; |
| 1132 | int blocks = rq->nr_sectors / floppy->bs_factor; |
| 1133 | int cmd = rq_data_dir(rq); |
| 1134 | |
| 1135 | debug_log("create_rw1%d_cmd: block == %d, blocks == %d\n", |
| 1136 | 2 * test_bit (IDEFLOPPY_USE_READ12, &floppy->flags), |
| 1137 | block, blocks); |
| 1138 | |
| 1139 | idefloppy_init_pc(pc); |
| 1140 | if (test_bit(IDEFLOPPY_USE_READ12, &floppy->flags)) { |
| 1141 | pc->c[0] = cmd == READ ? IDEFLOPPY_READ12_CMD : IDEFLOPPY_WRITE12_CMD; |
| 1142 | put_unaligned(htonl(blocks), (unsigned int *) &pc->c[6]); |
| 1143 | } else { |
| 1144 | pc->c[0] = cmd == READ ? IDEFLOPPY_READ10_CMD : IDEFLOPPY_WRITE10_CMD; |
| 1145 | put_unaligned(htons(blocks), (unsigned short *) &pc->c[7]); |
| 1146 | } |
| 1147 | put_unaligned(htonl(block), (unsigned int *) &pc->c[2]); |
| 1148 | pc->callback = &idefloppy_rw_callback; |
| 1149 | pc->rq = rq; |
| 1150 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1151 | if (rq->cmd_flags & REQ_RW) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | set_bit(PC_WRITING, &pc->flags); |
| 1153 | pc->buffer = NULL; |
| 1154 | pc->request_transfer = pc->buffer_size = blocks * floppy->block_size; |
| 1155 | set_bit(PC_DMA_RECOMMENDED, &pc->flags); |
| 1156 | } |
| 1157 | |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 1158 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq) |
| 1160 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | idefloppy_init_pc(pc); |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 1162 | pc->callback = &idefloppy_rw_callback; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 1164 | pc->rq = rq; |
| 1165 | pc->b_count = rq->data_len; |
| 1166 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
| 1167 | set_bit(PC_WRITING, &pc->flags); |
| 1168 | pc->buffer = rq->data; |
| 1169 | if (rq->bio) |
| 1170 | set_bit(PC_DMA_RECOMMENDED, &pc->flags); |
| 1171 | |
| 1172 | /* |
| 1173 | * possibly problematic, doesn't look like ide-floppy correctly |
| 1174 | * handled scattered requests if dma fails... |
| 1175 | */ |
| 1176 | pc->request_transfer = pc->buffer_size = rq->data_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | } |
| 1178 | |
| 1179 | /* |
| 1180 | * idefloppy_do_request is our request handling function. |
| 1181 | */ |
| 1182 | static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, sector_t block_s) |
| 1183 | { |
| 1184 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1185 | idefloppy_pc_t *pc; |
| 1186 | unsigned long block = (unsigned long)block_s; |
| 1187 | |
Jens Axboe | cdd6026 | 2006-07-28 09:32:07 +0200 | [diff] [blame] | 1188 | debug_log(KERN_INFO "dev: %s, flags: %lx, errors: %d\n", |
Randy Dunlap | 18cddac | 2006-06-25 05:48:56 -0700 | [diff] [blame] | 1189 | rq->rq_disk ? rq->rq_disk->disk_name : "?", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | rq->flags, rq->errors); |
| 1191 | debug_log(KERN_INFO "sector: %ld, nr_sectors: %ld, " |
| 1192 | "current_nr_sectors: %d\n", (long)rq->sector, |
| 1193 | rq->nr_sectors, rq->current_nr_sectors); |
| 1194 | |
| 1195 | if (rq->errors >= ERROR_MAX) { |
| 1196 | if (floppy->failed_pc != NULL) { |
| 1197 | if (idefloppy_should_report_error(floppy)) |
| 1198 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x," |
| 1199 | " key = %2x, asc = %2x, ascq = %2x\n", |
| 1200 | drive->name, floppy->failed_pc->c[0], |
| 1201 | floppy->sense_key, floppy->asc, floppy->ascq); |
| 1202 | } |
| 1203 | else |
| 1204 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", |
| 1205 | drive->name); |
| 1206 | idefloppy_do_end_request(drive, 0, 0); |
| 1207 | return ide_stopped; |
| 1208 | } |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1209 | if (blk_fs_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | if (((long)rq->sector % floppy->bs_factor) || |
| 1211 | (rq->nr_sectors % floppy->bs_factor)) { |
| 1212 | printk("%s: unsupported r/w request size\n", |
| 1213 | drive->name); |
| 1214 | idefloppy_do_end_request(drive, 0, 0); |
| 1215 | return ide_stopped; |
| 1216 | } |
| 1217 | pc = idefloppy_next_pc_storage(drive); |
| 1218 | idefloppy_create_rw_cmd(floppy, pc, rq, block); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1219 | } else if (blk_special_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | pc = (idefloppy_pc_t *) rq->buffer; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1221 | } else if (blk_pc_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | pc = idefloppy_next_pc_storage(drive); |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 1223 | idefloppy_blockpc_cmd(floppy, pc, rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | } else { |
| 1225 | blk_dump_rq_flags(rq, |
| 1226 | "ide-floppy: unsupported command in queue"); |
| 1227 | idefloppy_do_end_request(drive, 0, 0); |
| 1228 | return ide_stopped; |
| 1229 | } |
| 1230 | |
| 1231 | pc->rq = rq; |
| 1232 | return idefloppy_issue_pc(drive, pc); |
| 1233 | } |
| 1234 | |
| 1235 | /* |
| 1236 | * idefloppy_queue_pc_tail adds a special packet command request to the |
| 1237 | * tail of the request queue, and waits for it to be serviced. |
| 1238 | */ |
| 1239 | static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc) |
| 1240 | { |
| 1241 | struct ide_floppy_obj *floppy = drive->driver_data; |
| 1242 | struct request rq; |
| 1243 | |
| 1244 | ide_init_drive_cmd (&rq); |
| 1245 | rq.buffer = (char *) pc; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1246 | rq.cmd_type = REQ_TYPE_SPECIAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | rq.rq_disk = floppy->disk; |
| 1248 | |
| 1249 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
| 1250 | } |
| 1251 | |
| 1252 | /* |
| 1253 | * Look at the flexible disk page parameters. We will ignore the CHS |
| 1254 | * capacity parameters and use the LBA parameters instead. |
| 1255 | */ |
| 1256 | static int idefloppy_get_flexible_disk_page (ide_drive_t *drive) |
| 1257 | { |
| 1258 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1259 | idefloppy_pc_t pc; |
| 1260 | idefloppy_mode_parameter_header_t *header; |
| 1261 | idefloppy_flexible_disk_page_t *page; |
| 1262 | int capacity, lba_capacity; |
| 1263 | |
| 1264 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, MODE_SENSE_CURRENT); |
| 1265 | if (idefloppy_queue_pc_tail(drive,&pc)) { |
| 1266 | printk(KERN_ERR "ide-floppy: Can't get flexible disk " |
| 1267 | "page parameters\n"); |
| 1268 | return 1; |
| 1269 | } |
| 1270 | header = (idefloppy_mode_parameter_header_t *) pc.buffer; |
| 1271 | floppy->wp = header->wp; |
| 1272 | set_disk_ro(floppy->disk, floppy->wp); |
| 1273 | page = (idefloppy_flexible_disk_page_t *) (header + 1); |
| 1274 | |
| 1275 | page->transfer_rate = ntohs(page->transfer_rate); |
| 1276 | page->sector_size = ntohs(page->sector_size); |
| 1277 | page->cyls = ntohs(page->cyls); |
| 1278 | page->rpm = ntohs(page->rpm); |
| 1279 | capacity = page->cyls * page->heads * page->sectors * page->sector_size; |
| 1280 | if (memcmp (page, &floppy->flexible_disk_page, sizeof (idefloppy_flexible_disk_page_t))) |
| 1281 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
| 1282 | "%d sector size, %d rpm\n", |
| 1283 | drive->name, capacity / 1024, page->cyls, |
| 1284 | page->heads, page->sectors, |
| 1285 | page->transfer_rate / 8, page->sector_size, page->rpm); |
| 1286 | |
| 1287 | floppy->flexible_disk_page = *page; |
| 1288 | drive->bios_cyl = page->cyls; |
| 1289 | drive->bios_head = page->heads; |
| 1290 | drive->bios_sect = page->sectors; |
| 1291 | lba_capacity = floppy->blocks * floppy->block_size; |
| 1292 | if (capacity < lba_capacity) { |
| 1293 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " |
| 1294 | "bytes, but the drive only handles %d\n", |
| 1295 | drive->name, lba_capacity, capacity); |
| 1296 | floppy->blocks = floppy->block_size ? capacity / floppy->block_size : 0; |
| 1297 | } |
| 1298 | return 0; |
| 1299 | } |
| 1300 | |
| 1301 | static int idefloppy_get_capability_page(ide_drive_t *drive) |
| 1302 | { |
| 1303 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1304 | idefloppy_pc_t pc; |
| 1305 | idefloppy_mode_parameter_header_t *header; |
| 1306 | idefloppy_capabilities_page_t *page; |
| 1307 | |
| 1308 | floppy->srfp = 0; |
| 1309 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, |
| 1310 | MODE_SENSE_CURRENT); |
| 1311 | |
| 1312 | set_bit(PC_SUPPRESS_ERROR, &pc.flags); |
| 1313 | if (idefloppy_queue_pc_tail(drive,&pc)) { |
| 1314 | return 1; |
| 1315 | } |
| 1316 | |
| 1317 | header = (idefloppy_mode_parameter_header_t *) pc.buffer; |
| 1318 | page= (idefloppy_capabilities_page_t *)(header+1); |
| 1319 | floppy->srfp = page->srfp; |
| 1320 | return (0); |
| 1321 | } |
| 1322 | |
| 1323 | /* |
| 1324 | * Determine if a media is present in the floppy drive, and if so, |
| 1325 | * its LBA capacity. |
| 1326 | */ |
| 1327 | static int idefloppy_get_capacity (ide_drive_t *drive) |
| 1328 | { |
| 1329 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1330 | idefloppy_pc_t pc; |
| 1331 | idefloppy_capacity_header_t *header; |
| 1332 | idefloppy_capacity_descriptor_t *descriptor; |
| 1333 | int i, descriptors, rc = 1, blocks, length; |
| 1334 | |
| 1335 | drive->bios_cyl = 0; |
| 1336 | drive->bios_head = drive->bios_sect = 0; |
Alan Cox | fdb77da | 2007-02-17 02:40:20 +0100 | [diff] [blame] | 1337 | floppy->blocks = 0; |
| 1338 | floppy->bs_factor = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | set_capacity(floppy->disk, 0); |
| 1340 | |
| 1341 | idefloppy_create_read_capacity_cmd(&pc); |
| 1342 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1343 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); |
| 1344 | return 1; |
| 1345 | } |
| 1346 | header = (idefloppy_capacity_header_t *) pc.buffer; |
| 1347 | descriptors = header->length / sizeof(idefloppy_capacity_descriptor_t); |
| 1348 | descriptor = (idefloppy_capacity_descriptor_t *) (header + 1); |
| 1349 | |
| 1350 | for (i = 0; i < descriptors; i++, descriptor++) { |
| 1351 | blocks = descriptor->blocks = ntohl(descriptor->blocks); |
| 1352 | length = descriptor->length = ntohs(descriptor->length); |
| 1353 | |
| 1354 | if (!i) |
| 1355 | { |
| 1356 | switch (descriptor->dc) { |
| 1357 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
| 1358 | case CAPACITY_UNFORMATTED: |
| 1359 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) |
| 1360 | /* |
| 1361 | * If it is not a clik drive, break out |
| 1362 | * (maintains previous driver behaviour) |
| 1363 | */ |
| 1364 | break; |
| 1365 | case CAPACITY_CURRENT: |
| 1366 | /* Normal Zip/LS-120 disks */ |
| 1367 | if (memcmp(descriptor, &floppy->capacity, sizeof (idefloppy_capacity_descriptor_t))) |
| 1368 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
| 1369 | "sector size\n", drive->name, |
| 1370 | blocks * length / 1024, blocks, length); |
| 1371 | floppy->capacity = *descriptor; |
| 1372 | if (!length || length % 512) { |
| 1373 | printk(KERN_NOTICE "%s: %d bytes block size " |
| 1374 | "not supported\n", drive->name, length); |
| 1375 | } else { |
| 1376 | floppy->blocks = blocks; |
| 1377 | floppy->block_size = length; |
| 1378 | if ((floppy->bs_factor = length / 512) != 1) |
| 1379 | printk(KERN_NOTICE "%s: warning: non " |
| 1380 | "512 bytes block size not " |
| 1381 | "fully supported\n", |
| 1382 | drive->name); |
| 1383 | rc = 0; |
| 1384 | } |
| 1385 | break; |
| 1386 | case CAPACITY_NO_CARTRIDGE: |
| 1387 | /* |
| 1388 | * This is a KERN_ERR so it appears on screen |
| 1389 | * for the user to see |
| 1390 | */ |
| 1391 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); |
| 1392 | break; |
| 1393 | case CAPACITY_INVALID: |
| 1394 | printk(KERN_ERR "%s: Invalid capacity for disk " |
| 1395 | "in drive\n", drive->name); |
| 1396 | break; |
| 1397 | } |
| 1398 | } |
| 1399 | if (!i) { |
| 1400 | debug_log( "Descriptor 0 Code: %d\n", |
| 1401 | descriptor->dc); |
| 1402 | } |
| 1403 | debug_log( "Descriptor %d: %dkB, %d blocks, %d " |
| 1404 | "sector size\n", i, blocks * length / 1024, blocks, |
| 1405 | length); |
| 1406 | } |
| 1407 | |
| 1408 | /* Clik! disk does not support get_flexible_disk_page */ |
| 1409 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { |
| 1410 | (void) idefloppy_get_flexible_disk_page(drive); |
| 1411 | } |
| 1412 | |
| 1413 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); |
| 1414 | return rc; |
| 1415 | } |
| 1416 | |
| 1417 | /* |
| 1418 | ** Obtain the list of formattable capacities. |
| 1419 | ** Very similar to idefloppy_get_capacity, except that we push the capacity |
| 1420 | ** descriptors to userland, instead of our own structures. |
| 1421 | ** |
| 1422 | ** Userland gives us the following structure: |
| 1423 | ** |
| 1424 | ** struct idefloppy_format_capacities { |
| 1425 | ** int nformats; |
| 1426 | ** struct { |
| 1427 | ** int nblocks; |
| 1428 | ** int blocksize; |
| 1429 | ** } formats[]; |
| 1430 | ** } ; |
| 1431 | ** |
| 1432 | ** userland initializes nformats to the number of allocated formats[] |
| 1433 | ** records. On exit we set nformats to the number of records we've |
| 1434 | ** actually initialized. |
| 1435 | ** |
| 1436 | */ |
| 1437 | |
| 1438 | static int idefloppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
| 1439 | { |
| 1440 | idefloppy_pc_t pc; |
| 1441 | idefloppy_capacity_header_t *header; |
| 1442 | idefloppy_capacity_descriptor_t *descriptor; |
| 1443 | int i, descriptors, blocks, length; |
| 1444 | int u_array_size; |
| 1445 | int u_index; |
| 1446 | int __user *argp; |
| 1447 | |
| 1448 | if (get_user(u_array_size, arg)) |
| 1449 | return (-EFAULT); |
| 1450 | |
| 1451 | if (u_array_size <= 0) |
| 1452 | return (-EINVAL); |
| 1453 | |
| 1454 | idefloppy_create_read_capacity_cmd(&pc); |
| 1455 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1456 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); |
| 1457 | return (-EIO); |
| 1458 | } |
| 1459 | header = (idefloppy_capacity_header_t *) pc.buffer; |
| 1460 | descriptors = header->length / |
| 1461 | sizeof(idefloppy_capacity_descriptor_t); |
| 1462 | descriptor = (idefloppy_capacity_descriptor_t *) (header + 1); |
| 1463 | |
| 1464 | u_index = 0; |
| 1465 | argp = arg + 1; |
| 1466 | |
| 1467 | /* |
| 1468 | ** We always skip the first capacity descriptor. That's the |
| 1469 | ** current capacity. We are interested in the remaining descriptors, |
| 1470 | ** the formattable capacities. |
| 1471 | */ |
| 1472 | |
| 1473 | for (i=0; i<descriptors; i++, descriptor++) { |
| 1474 | if (u_index >= u_array_size) |
| 1475 | break; /* User-supplied buffer too small */ |
| 1476 | if (i == 0) |
| 1477 | continue; /* Skip the first descriptor */ |
| 1478 | |
| 1479 | blocks = ntohl(descriptor->blocks); |
| 1480 | length = ntohs(descriptor->length); |
| 1481 | |
| 1482 | if (put_user(blocks, argp)) |
| 1483 | return(-EFAULT); |
| 1484 | ++argp; |
| 1485 | |
| 1486 | if (put_user(length, argp)) |
| 1487 | return (-EFAULT); |
| 1488 | ++argp; |
| 1489 | |
| 1490 | ++u_index; |
| 1491 | } |
| 1492 | |
| 1493 | if (put_user(u_index, arg)) |
| 1494 | return (-EFAULT); |
| 1495 | return (0); |
| 1496 | } |
| 1497 | |
| 1498 | /* |
| 1499 | ** Send ATAPI_FORMAT_UNIT to the drive. |
| 1500 | ** |
| 1501 | ** Userland gives us the following structure: |
| 1502 | ** |
| 1503 | ** struct idefloppy_format_command { |
| 1504 | ** int nblocks; |
| 1505 | ** int blocksize; |
| 1506 | ** int flags; |
| 1507 | ** } ; |
| 1508 | ** |
| 1509 | ** flags is a bitmask, currently, the only defined flag is: |
| 1510 | ** |
| 1511 | ** 0x01 - verify media after format. |
| 1512 | */ |
| 1513 | |
| 1514 | static int idefloppy_begin_format(ide_drive_t *drive, int __user *arg) |
| 1515 | { |
| 1516 | int blocks; |
| 1517 | int length; |
| 1518 | int flags; |
| 1519 | idefloppy_pc_t pc; |
| 1520 | |
| 1521 | if (get_user(blocks, arg) || |
| 1522 | get_user(length, arg+1) || |
| 1523 | get_user(flags, arg+2)) { |
| 1524 | return (-EFAULT); |
| 1525 | } |
| 1526 | |
| 1527 | /* Get the SFRP bit */ |
| 1528 | (void) idefloppy_get_capability_page(drive); |
| 1529 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); |
| 1530 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1531 | return (-EIO); |
| 1532 | } |
| 1533 | |
| 1534 | return (0); |
| 1535 | } |
| 1536 | |
| 1537 | /* |
| 1538 | ** Get ATAPI_FORMAT_UNIT progress indication. |
| 1539 | ** |
Matt LaPlante | 0779bf2 | 2006-11-30 05:24:39 +0100 | [diff] [blame] | 1540 | ** Userland gives a pointer to an int. The int is set to a progress |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | ** indicator 0-65536, with 65536=100%. |
| 1542 | ** |
| 1543 | ** If the drive does not support format progress indication, we just check |
| 1544 | ** the dsc bit, and return either 0 or 65536. |
| 1545 | */ |
| 1546 | |
| 1547 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) |
| 1548 | { |
| 1549 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1550 | idefloppy_pc_t pc; |
| 1551 | int progress_indication = 0x10000; |
| 1552 | |
| 1553 | if (floppy->srfp) { |
| 1554 | idefloppy_create_request_sense_cmd(&pc); |
| 1555 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1556 | return (-EIO); |
| 1557 | } |
| 1558 | |
| 1559 | if (floppy->sense_key == 2 && |
| 1560 | floppy->asc == 4 && |
| 1561 | floppy->ascq == 4) { |
| 1562 | progress_indication = floppy->progress_indication; |
| 1563 | } |
| 1564 | /* Else assume format_unit has finished, and we're |
| 1565 | ** at 0x10000 */ |
| 1566 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | unsigned long flags; |
Bartlomiej Zolnierkiewicz | 22c525b | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 1568 | u8 stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | |
| 1570 | local_irq_save(flags); |
Bartlomiej Zolnierkiewicz | 22c525b | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 1571 | stat = drive->hwif->INB(IDE_STATUS_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | local_irq_restore(flags); |
| 1573 | |
Bartlomiej Zolnierkiewicz | 22c525b | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 1574 | progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | } |
| 1576 | if (put_user(progress_indication, arg)) |
| 1577 | return (-EFAULT); |
| 1578 | |
| 1579 | return (0); |
| 1580 | } |
| 1581 | |
| 1582 | /* |
| 1583 | * Return the current floppy capacity. |
| 1584 | */ |
| 1585 | static sector_t idefloppy_capacity (ide_drive_t *drive) |
| 1586 | { |
| 1587 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1588 | unsigned long capacity = floppy->blocks * floppy->bs_factor; |
| 1589 | |
| 1590 | return capacity; |
| 1591 | } |
| 1592 | |
| 1593 | /* |
| 1594 | * idefloppy_identify_device checks if we can support a drive, |
| 1595 | * based on the ATAPI IDENTIFY command results. |
| 1596 | */ |
| 1597 | static int idefloppy_identify_device (ide_drive_t *drive,struct hd_driveid *id) |
| 1598 | { |
| 1599 | struct idefloppy_id_gcw gcw; |
| 1600 | #if IDEFLOPPY_DEBUG_INFO |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | char buffer[80]; |
| 1602 | #endif /* IDEFLOPPY_DEBUG_INFO */ |
| 1603 | |
| 1604 | *((u16 *) &gcw) = id->config; |
| 1605 | |
| 1606 | #ifdef CONFIG_PPC |
| 1607 | /* kludge for Apple PowerBook internal zip */ |
| 1608 | if ((gcw.device_type == 5) && |
| 1609 | !strstr(id->model, "CD-ROM") && |
| 1610 | strstr(id->model, "ZIP")) |
| 1611 | gcw.device_type = 0; |
| 1612 | #endif |
| 1613 | |
| 1614 | #if IDEFLOPPY_DEBUG_INFO |
| 1615 | printk(KERN_INFO "Dumping ATAPI Identify Device floppy parameters\n"); |
| 1616 | switch (gcw.protocol) { |
| 1617 | case 0: case 1: sprintf(buffer, "ATA");break; |
| 1618 | case 2: sprintf(buffer, "ATAPI");break; |
| 1619 | case 3: sprintf(buffer, "Reserved (Unknown to ide-floppy)");break; |
| 1620 | } |
| 1621 | printk(KERN_INFO "Protocol Type: %s\n", buffer); |
| 1622 | switch (gcw.device_type) { |
| 1623 | case 0: sprintf(buffer, "Direct-access Device");break; |
| 1624 | case 1: sprintf(buffer, "Streaming Tape Device");break; |
| 1625 | case 2: case 3: case 4: sprintf (buffer, "Reserved");break; |
| 1626 | case 5: sprintf(buffer, "CD-ROM Device");break; |
| 1627 | case 6: sprintf(buffer, "Reserved"); |
| 1628 | case 7: sprintf(buffer, "Optical memory Device");break; |
| 1629 | case 0x1f: sprintf(buffer, "Unknown or no Device type");break; |
| 1630 | default: sprintf(buffer, "Reserved"); |
| 1631 | } |
| 1632 | printk(KERN_INFO "Device Type: %x - %s\n", gcw.device_type, buffer); |
| 1633 | printk(KERN_INFO "Removable: %s\n",gcw.removable ? "Yes":"No"); |
| 1634 | switch (gcw.drq_type) { |
| 1635 | case 0: sprintf(buffer, "Microprocessor DRQ");break; |
| 1636 | case 1: sprintf(buffer, "Interrupt DRQ");break; |
| 1637 | case 2: sprintf(buffer, "Accelerated DRQ");break; |
| 1638 | case 3: sprintf(buffer, "Reserved");break; |
| 1639 | } |
| 1640 | printk(KERN_INFO "Command Packet DRQ Type: %s\n", buffer); |
| 1641 | switch (gcw.packet_size) { |
| 1642 | case 0: sprintf(buffer, "12 bytes");break; |
| 1643 | case 1: sprintf(buffer, "16 bytes");break; |
| 1644 | default: sprintf(buffer, "Reserved");break; |
| 1645 | } |
| 1646 | printk(KERN_INFO "Command Packet Size: %s\n", buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | #endif /* IDEFLOPPY_DEBUG_INFO */ |
| 1648 | |
| 1649 | if (gcw.protocol != 2) |
| 1650 | printk(KERN_ERR "ide-floppy: Protocol is not ATAPI\n"); |
| 1651 | else if (gcw.device_type != 0) |
| 1652 | printk(KERN_ERR "ide-floppy: Device type is not set to floppy\n"); |
| 1653 | else if (!gcw.removable) |
| 1654 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); |
| 1655 | else if (gcw.drq_type == 3) { |
| 1656 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type %d not supported\n", gcw.drq_type); |
| 1657 | } else if (gcw.packet_size != 0) { |
| 1658 | printk(KERN_ERR "ide-floppy: Packet size is not 12 bytes long\n"); |
| 1659 | } else |
| 1660 | return 1; |
| 1661 | return 0; |
| 1662 | } |
| 1663 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1664 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | static void idefloppy_add_settings(ide_drive_t *drive) |
| 1666 | { |
| 1667 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1668 | |
| 1669 | /* |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1670 | * drive setting name read/write data type min max mul_factor div_factor data pointer set function |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | */ |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1672 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL); |
| 1673 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); |
| 1674 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); |
| 1675 | ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | } |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1677 | #else |
| 1678 | static inline void idefloppy_add_settings(ide_drive_t *drive) { ; } |
| 1679 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | |
| 1681 | /* |
| 1682 | * Driver initialization. |
| 1683 | */ |
| 1684 | static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy) |
| 1685 | { |
| 1686 | struct idefloppy_id_gcw gcw; |
| 1687 | |
| 1688 | *((u16 *) &gcw) = drive->id->config; |
| 1689 | floppy->pc = floppy->pc_stack; |
| 1690 | if (gcw.drq_type == 1) |
| 1691 | set_bit(IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags); |
| 1692 | /* |
| 1693 | * We used to check revisions here. At this point however |
| 1694 | * I'm giving up. Just assume they are all broken, its easier. |
| 1695 | * |
| 1696 | * The actual reason for the workarounds was likely |
| 1697 | * a driver bug after all rather than a firmware bug, |
| 1698 | * and the workaround below used to hide it. It should |
| 1699 | * be fixed as of version 1.9, but to be on the safe side |
| 1700 | * we'll leave the limitation below for the 2.2.x tree. |
| 1701 | */ |
| 1702 | |
| 1703 | if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { |
| 1704 | set_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags); |
| 1705 | /* This value will be visible in the /proc/ide/hdx/settings */ |
| 1706 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; |
| 1707 | blk_queue_max_sectors(drive->queue, 64); |
| 1708 | } |
| 1709 | |
| 1710 | /* |
| 1711 | * Guess what? The IOMEGA Clik! drive also needs the |
| 1712 | * above fix. It makes nasty clicking noises without |
| 1713 | * it, so please don't remove this. |
| 1714 | */ |
| 1715 | if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { |
| 1716 | blk_queue_max_sectors(drive->queue, 64); |
| 1717 | set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags); |
| 1718 | } |
| 1719 | |
| 1720 | |
| 1721 | (void) idefloppy_get_capacity(drive); |
| 1722 | idefloppy_add_settings(drive); |
| 1723 | } |
| 1724 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1725 | static void ide_floppy_remove(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | { |
| 1727 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1728 | struct gendisk *g = floppy->disk; |
| 1729 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1730 | ide_proc_unregister_driver(drive, floppy->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | |
| 1732 | del_gendisk(g); |
| 1733 | |
| 1734 | ide_floppy_put(floppy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | } |
| 1736 | |
| 1737 | static void ide_floppy_release(struct kref *kref) |
| 1738 | { |
| 1739 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); |
| 1740 | ide_drive_t *drive = floppy->drive; |
| 1741 | struct gendisk *g = floppy->disk; |
| 1742 | |
| 1743 | drive->driver_data = NULL; |
| 1744 | g->private_data = NULL; |
| 1745 | put_disk(g); |
| 1746 | kfree(floppy); |
| 1747 | } |
| 1748 | |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 1749 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | static int proc_idefloppy_read_capacity |
| 1751 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 1752 | { |
| 1753 | ide_drive_t*drive = (ide_drive_t *)data; |
| 1754 | int len; |
| 1755 | |
| 1756 | len = sprintf(page,"%llu\n", (long long)idefloppy_capacity(drive)); |
| 1757 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 1758 | } |
| 1759 | |
| 1760 | static ide_proc_entry_t idefloppy_proc[] = { |
| 1761 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
| 1762 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, |
| 1763 | { NULL, 0, NULL, NULL } |
| 1764 | }; |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 1765 | #endif /* CONFIG_IDE_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1767 | static int ide_floppy_probe(ide_drive_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | static ide_driver_t idefloppy_driver = { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1770 | .gen_driver = { |
Laurent Riffard | 4ef3b8f | 2005-11-18 22:15:40 +0100 | [diff] [blame] | 1771 | .owner = THIS_MODULE, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1772 | .name = "ide-floppy", |
| 1773 | .bus = &ide_bus_type, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1774 | }, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1775 | .probe = ide_floppy_probe, |
| 1776 | .remove = ide_floppy_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | .version = IDEFLOPPY_VERSION, |
| 1778 | .media = ide_floppy, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | .supports_dsc_overlap = 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | .do_request = idefloppy_do_request, |
| 1781 | .end_request = idefloppy_do_end_request, |
| 1782 | .error = __ide_error, |
| 1783 | .abort = __ide_abort, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1784 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | .proc = idefloppy_proc, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1786 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | }; |
| 1788 | |
| 1789 | static int idefloppy_open(struct inode *inode, struct file *filp) |
| 1790 | { |
| 1791 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 1792 | struct ide_floppy_obj *floppy; |
| 1793 | ide_drive_t *drive; |
| 1794 | idefloppy_pc_t pc; |
| 1795 | int ret = 0; |
| 1796 | |
| 1797 | debug_log(KERN_INFO "Reached idefloppy_open\n"); |
| 1798 | |
| 1799 | if (!(floppy = ide_floppy_get(disk))) |
| 1800 | return -ENXIO; |
| 1801 | |
| 1802 | drive = floppy->drive; |
| 1803 | |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1804 | floppy->openers++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1806 | if (floppy->openers == 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
| 1808 | /* Just in case */ |
| 1809 | |
| 1810 | idefloppy_create_test_unit_ready_cmd(&pc); |
| 1811 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1812 | idefloppy_create_start_stop_cmd(&pc, 1); |
| 1813 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 1814 | } |
| 1815 | |
| 1816 | if (idefloppy_get_capacity (drive) |
| 1817 | && (filp->f_flags & O_NDELAY) == 0 |
| 1818 | /* |
| 1819 | ** Allow O_NDELAY to open a drive without a disk, or with |
| 1820 | ** an unreadable disk, so that we can get the format |
| 1821 | ** capacity of the drive or begin the format - Sam |
| 1822 | */ |
| 1823 | ) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | ret = -EIO; |
| 1825 | goto out_put_floppy; |
| 1826 | } |
| 1827 | |
| 1828 | if (floppy->wp && (filp->f_mode & 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | ret = -EROFS; |
| 1830 | goto out_put_floppy; |
| 1831 | } |
| 1832 | set_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); |
| 1833 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
| 1834 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { |
| 1835 | idefloppy_create_prevent_cmd(&pc, 1); |
| 1836 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 1837 | } |
| 1838 | check_disk_change(inode->i_bdev); |
| 1839 | } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1840 | ret = -EBUSY; |
| 1841 | goto out_put_floppy; |
| 1842 | } |
| 1843 | return 0; |
| 1844 | |
| 1845 | out_put_floppy: |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1846 | floppy->openers--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | ide_floppy_put(floppy); |
| 1848 | return ret; |
| 1849 | } |
| 1850 | |
| 1851 | static int idefloppy_release(struct inode *inode, struct file *filp) |
| 1852 | { |
| 1853 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 1854 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); |
| 1855 | ide_drive_t *drive = floppy->drive; |
| 1856 | idefloppy_pc_t pc; |
| 1857 | |
| 1858 | debug_log(KERN_INFO "Reached idefloppy_release\n"); |
| 1859 | |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1860 | if (floppy->openers == 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1861 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
| 1862 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { |
| 1863 | idefloppy_create_prevent_cmd(&pc, 0); |
| 1864 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 1865 | } |
| 1866 | |
| 1867 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
| 1868 | } |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1869 | |
| 1870 | floppy->openers--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | |
| 1872 | ide_floppy_put(floppy); |
| 1873 | |
| 1874 | return 0; |
| 1875 | } |
| 1876 | |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1877 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 1878 | { |
| 1879 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); |
| 1880 | ide_drive_t *drive = floppy->drive; |
| 1881 | |
| 1882 | geo->heads = drive->bios_head; |
| 1883 | geo->sectors = drive->bios_sect; |
| 1884 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ |
| 1885 | return 0; |
| 1886 | } |
| 1887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
| 1889 | unsigned int cmd, unsigned long arg) |
| 1890 | { |
| 1891 | struct block_device *bdev = inode->i_bdev; |
| 1892 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); |
| 1893 | ide_drive_t *drive = floppy->drive; |
| 1894 | void __user *argp = (void __user *)arg; |
Ondrej Zary | 07203f6 | 2005-11-10 00:25:15 +0100 | [diff] [blame] | 1895 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1896 | int prevent = (arg) ? 1 : 0; |
| 1897 | idefloppy_pc_t pc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | |
| 1899 | switch (cmd) { |
| 1900 | case CDROMEJECT: |
| 1901 | prevent = 0; |
| 1902 | /* fall through */ |
| 1903 | case CDROM_LOCKDOOR: |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1904 | if (floppy->openers > 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | return -EBUSY; |
| 1906 | |
| 1907 | /* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */ |
| 1908 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { |
| 1909 | idefloppy_create_prevent_cmd(&pc, prevent); |
| 1910 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 1911 | } |
| 1912 | if (cmd == CDROMEJECT) { |
| 1913 | idefloppy_create_start_stop_cmd(&pc, 2); |
| 1914 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 1915 | } |
| 1916 | return 0; |
| 1917 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: |
| 1918 | return 0; |
| 1919 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: |
| 1920 | return idefloppy_get_format_capacities(drive, argp); |
| 1921 | case IDEFLOPPY_IOCTL_FORMAT_START: |
| 1922 | |
| 1923 | if (!(file->f_mode & 2)) |
| 1924 | return -EPERM; |
| 1925 | |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1926 | if (floppy->openers > 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1927 | /* Don't format if someone is using the disk */ |
| 1928 | |
| 1929 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, |
| 1930 | &floppy->flags); |
| 1931 | return -EBUSY; |
| 1932 | } |
| 1933 | |
| 1934 | set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
| 1935 | |
| 1936 | err = idefloppy_begin_format(drive, argp); |
| 1937 | if (err) |
| 1938 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
| 1939 | return err; |
| 1940 | /* |
| 1941 | ** Note, the bit will be cleared when the device is |
| 1942 | ** closed. This is the cleanest way to handle the |
| 1943 | ** situation where the drive does not support |
| 1944 | ** format progress reporting. |
| 1945 | */ |
| 1946 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: |
| 1947 | return idefloppy_get_format_progress(drive, argp); |
| 1948 | } |
Bartlomiej Zolnierkiewicz | 89636af | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 1949 | |
| 1950 | /* |
| 1951 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) |
| 1952 | * and CDROM_SEND_PACKET (legacy) ioctls |
| 1953 | */ |
| 1954 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) |
| 1955 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, |
| 1956 | bdev->bd_disk, cmd, argp); |
| 1957 | else |
| 1958 | err = -ENOTTY; |
| 1959 | |
| 1960 | if (err == -ENOTTY) |
| 1961 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); |
| 1962 | |
| 1963 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | } |
| 1965 | |
| 1966 | static int idefloppy_media_changed(struct gendisk *disk) |
| 1967 | { |
| 1968 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); |
| 1969 | ide_drive_t *drive = floppy->drive; |
| 1970 | |
| 1971 | /* do not scan partitions twice if this is a removable device */ |
| 1972 | if (drive->attach) { |
| 1973 | drive->attach = 0; |
| 1974 | return 0; |
| 1975 | } |
| 1976 | return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); |
| 1977 | } |
| 1978 | |
| 1979 | static int idefloppy_revalidate_disk(struct gendisk *disk) |
| 1980 | { |
| 1981 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); |
| 1982 | set_capacity(disk, idefloppy_capacity(floppy->drive)); |
| 1983 | return 0; |
| 1984 | } |
| 1985 | |
| 1986 | static struct block_device_operations idefloppy_ops = { |
| 1987 | .owner = THIS_MODULE, |
| 1988 | .open = idefloppy_open, |
| 1989 | .release = idefloppy_release, |
| 1990 | .ioctl = idefloppy_ioctl, |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1991 | .getgeo = idefloppy_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1992 | .media_changed = idefloppy_media_changed, |
| 1993 | .revalidate_disk= idefloppy_revalidate_disk |
| 1994 | }; |
| 1995 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1996 | static int ide_floppy_probe(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | { |
| 1998 | idefloppy_floppy_t *floppy; |
| 1999 | struct gendisk *g; |
| 2000 | |
| 2001 | if (!strstr("ide-floppy", drive->driver_req)) |
| 2002 | goto failed; |
| 2003 | if (!drive->present) |
| 2004 | goto failed; |
| 2005 | if (drive->media != ide_floppy) |
| 2006 | goto failed; |
| 2007 | if (!idefloppy_identify_device (drive, drive->id)) { |
| 2008 | printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name); |
| 2009 | goto failed; |
| 2010 | } |
| 2011 | if (drive->scsi) { |
| 2012 | printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name); |
| 2013 | goto failed; |
| 2014 | } |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 2015 | if ((floppy = kzalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2016 | printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name); |
| 2017 | goto failed; |
| 2018 | } |
| 2019 | |
| 2020 | g = alloc_disk(1 << PARTN_BITS); |
| 2021 | if (!g) |
| 2022 | goto out_free_floppy; |
| 2023 | |
| 2024 | ide_init_disk(g, drive); |
| 2025 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2026 | ide_proc_register_driver(drive, &idefloppy_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2027 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | kref_init(&floppy->kref); |
| 2029 | |
| 2030 | floppy->drive = drive; |
| 2031 | floppy->driver = &idefloppy_driver; |
| 2032 | floppy->disk = g; |
| 2033 | |
| 2034 | g->private_data = &floppy->driver; |
| 2035 | |
| 2036 | drive->driver_data = floppy; |
| 2037 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2038 | idefloppy_setup (drive, floppy); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2039 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | g->minors = 1 << PARTN_BITS; |
| 2041 | g->driverfs_dev = &drive->gendev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
| 2043 | g->fops = &idefloppy_ops; |
| 2044 | drive->attach = 1; |
| 2045 | add_disk(g); |
| 2046 | return 0; |
| 2047 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | out_free_floppy: |
| 2049 | kfree(floppy); |
| 2050 | failed: |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2051 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | } |
| 2053 | |
| 2054 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
| 2055 | |
| 2056 | static void __exit idefloppy_exit (void) |
| 2057 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2058 | driver_unregister(&idefloppy_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2059 | } |
| 2060 | |
Bartlomiej Zolnierkiewicz | 17514e8 | 2005-11-19 22:24:35 +0100 | [diff] [blame] | 2061 | static int __init idefloppy_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | { |
| 2063 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2064 | return driver_register(&idefloppy_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | } |
| 2066 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 2067 | MODULE_ALIAS("ide:*m-floppy*"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2068 | module_init(idefloppy_init); |
| 2069 | module_exit(idefloppy_exit); |
| 2070 | MODULE_LICENSE("GPL"); |