Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/ide/ide-floppy.c Version 0.99 Feb 24 2002 |
| 3 | * |
| 4 | * Copyright (C) 1996 - 1999 Gadi Oxman <gadio@netvision.net.il> |
| 5 | * Copyright (C) 2000 - 2002 Paul Bristow <paul@paulbristow.net> |
| 6 | */ |
| 7 | |
| 8 | /* |
| 9 | * IDE ATAPI floppy driver. |
| 10 | * |
| 11 | * The driver currently doesn't have any fancy features, just the bare |
| 12 | * minimum read/write support. |
| 13 | * |
| 14 | * This driver supports the following IDE floppy drives: |
| 15 | * |
| 16 | * LS-120/240 SuperDisk |
| 17 | * Iomega Zip 100/250 |
| 18 | * Iomega PC Card Clik!/PocketZip |
| 19 | * |
| 20 | * Many thanks to Lode Leroy <Lode.Leroy@www.ibase.be>, who tested so many |
| 21 | * ALPHA patches to this driver on an EASYSTOR LS-120 ATAPI floppy drive. |
| 22 | * |
| 23 | * Ver 0.1 Oct 17 96 Initial test version, mostly based on ide-tape.c. |
| 24 | * Ver 0.2 Oct 31 96 Minor changes. |
| 25 | * Ver 0.3 Dec 2 96 Fixed error recovery bug. |
| 26 | * Ver 0.4 Jan 26 97 Add support for the HDIO_GETGEO ioctl. |
| 27 | * Ver 0.5 Feb 21 97 Add partitions support. |
| 28 | * Use the minimum of the LBA and CHS capacities. |
| 29 | * Avoid hwgroup->rq == NULL on the last irq. |
| 30 | * Fix potential null dereferencing with DEBUG_LOG. |
| 31 | * Ver 0.8 Dec 7 97 Increase irq timeout from 10 to 50 seconds. |
| 32 | * Add media write-protect detection. |
| 33 | * Issue START command only if TEST UNIT READY fails. |
| 34 | * Add work-around for IOMEGA ZIP revision 21.D. |
| 35 | * Remove idefloppy_get_capabilities(). |
| 36 | * Ver 0.9 Jul 4 99 Fix a bug which might have caused the number of |
| 37 | * bytes requested on each interrupt to be zero. |
| 38 | * Thanks to <shanos@es.co.nz> for pointing this out. |
| 39 | * Ver 0.9.sv Jan 6 01 Sam Varshavchik <mrsam@courier-mta.com> |
| 40 | * Implement low level formatting. Reimplemented |
| 41 | * IDEFLOPPY_CAPABILITIES_PAGE, since we need the srfp |
| 42 | * bit. My LS-120 drive barfs on |
| 43 | * IDEFLOPPY_CAPABILITIES_PAGE, but maybe it's just me. |
| 44 | * Compromise by not reporting a failure to get this |
| 45 | * mode page. Implemented four IOCTLs in order to |
| 46 | * implement formatting. IOCTls begin with 0x4600, |
| 47 | * 0x46 is 'F' as in Format. |
| 48 | * Jan 9 01 Userland option to select format verify. |
| 49 | * Added PC_SUPPRESS_ERROR flag - some idefloppy drives |
| 50 | * do not implement IDEFLOPPY_CAPABILITIES_PAGE, and |
| 51 | * return a sense error. Suppress error reporting in |
| 52 | * this particular case in order to avoid spurious |
| 53 | * errors in syslog. The culprit is |
| 54 | * idefloppy_get_capability_page(), so move it to |
| 55 | * idefloppy_begin_format() so that it's not used |
| 56 | * unless absolutely necessary. |
| 57 | * If drive does not support format progress indication |
| 58 | * monitor the dsc bit in the status register. |
| 59 | * Also, O_NDELAY on open will allow the device to be |
| 60 | * opened without a disk available. This can be used to |
| 61 | * open an unformatted disk, or get the device capacity. |
| 62 | * Ver 0.91 Dec 11 99 Added IOMEGA Clik! drive support by |
| 63 | * <paul@paulbristow.net> |
| 64 | * Ver 0.92 Oct 22 00 Paul Bristow became official maintainer for this |
| 65 | * driver. Included Powerbook internal zip kludge. |
| 66 | * Ver 0.93 Oct 24 00 Fixed bugs for Clik! drive |
| 67 | * no disk on insert and disk change now works |
| 68 | * Ver 0.94 Oct 27 00 Tidied up to remove strstr(Clik) everywhere |
| 69 | * Ver 0.95 Nov 7 00 Brought across to kernel 2.4 |
| 70 | * Ver 0.96 Jan 7 01 Actually in line with release version of 2.4.0 |
| 71 | * including set_bit patch from Rusty Russell |
| 72 | * Ver 0.97 Jul 22 01 Merge 0.91-0.96 onto 0.9.sv for ac series |
| 73 | * Ver 0.97.sv Aug 3 01 Backported from 2.4.7-ac3 |
| 74 | * Ver 0.98 Oct 26 01 Split idefloppy_transfer_pc into two pieces to |
| 75 | * fix a lost interrupt problem. It appears the busy |
| 76 | * bit was being deasserted by my IOMEGA ATAPI ZIP 100 |
| 77 | * drive before the drive was actually ready. |
| 78 | * Ver 0.98a Oct 29 01 Expose delay value so we can play. |
| 79 | * Ver 0.99 Feb 24 02 Remove duplicate code, modify clik! detection code |
| 80 | * to support new PocketZip drives |
| 81 | */ |
| 82 | |
| 83 | #define IDEFLOPPY_VERSION "0.99.newide" |
| 84 | |
| 85 | #include <linux/config.h> |
| 86 | #include <linux/module.h> |
| 87 | #include <linux/types.h> |
| 88 | #include <linux/string.h> |
| 89 | #include <linux/kernel.h> |
| 90 | #include <linux/delay.h> |
| 91 | #include <linux/timer.h> |
| 92 | #include <linux/mm.h> |
| 93 | #include <linux/interrupt.h> |
| 94 | #include <linux/major.h> |
| 95 | #include <linux/errno.h> |
| 96 | #include <linux/genhd.h> |
| 97 | #include <linux/slab.h> |
| 98 | #include <linux/cdrom.h> |
| 99 | #include <linux/ide.h> |
| 100 | #include <linux/bitops.h> |
| 101 | |
| 102 | #include <asm/byteorder.h> |
| 103 | #include <asm/irq.h> |
| 104 | #include <asm/uaccess.h> |
| 105 | #include <asm/io.h> |
| 106 | #include <asm/unaligned.h> |
| 107 | |
| 108 | /* |
| 109 | * The following are used to debug the driver. |
| 110 | */ |
| 111 | #define IDEFLOPPY_DEBUG_LOG 0 |
| 112 | #define IDEFLOPPY_DEBUG_INFO 0 |
| 113 | #define IDEFLOPPY_DEBUG_BUGS 1 |
| 114 | |
| 115 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ |
| 116 | #define IDEFLOPPY_DEBUG( fmt, args... ) |
| 117 | |
| 118 | #if IDEFLOPPY_DEBUG_LOG |
| 119 | #define debug_log printk |
| 120 | #else |
| 121 | #define debug_log(fmt, args... ) do {} while(0) |
| 122 | #endif |
| 123 | |
| 124 | |
| 125 | /* |
| 126 | * Some drives require a longer irq timeout. |
| 127 | */ |
| 128 | #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) |
| 129 | |
| 130 | /* |
| 131 | * After each failed packet command we issue a request sense command |
| 132 | * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times. |
| 133 | */ |
| 134 | #define IDEFLOPPY_MAX_PC_RETRIES 3 |
| 135 | |
| 136 | /* |
| 137 | * With each packet command, we allocate a buffer of |
| 138 | * IDEFLOPPY_PC_BUFFER_SIZE bytes. |
| 139 | */ |
| 140 | #define IDEFLOPPY_PC_BUFFER_SIZE 256 |
| 141 | |
| 142 | /* |
| 143 | * In various places in the driver, we need to allocate storage |
| 144 | * for packet commands and requests, which will remain valid while |
| 145 | * we leave the driver to wait for an interrupt or a timeout event. |
| 146 | */ |
| 147 | #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES) |
| 148 | |
| 149 | /* |
| 150 | * Our view of a packet command. |
| 151 | */ |
| 152 | typedef struct idefloppy_packet_command_s { |
| 153 | u8 c[12]; /* Actual packet bytes */ |
| 154 | int retries; /* On each retry, we increment retries */ |
| 155 | int error; /* Error code */ |
| 156 | int request_transfer; /* Bytes to transfer */ |
| 157 | int actually_transferred; /* Bytes actually transferred */ |
| 158 | int buffer_size; /* Size of our data buffer */ |
| 159 | int b_count; /* Missing/Available data on the current buffer */ |
| 160 | struct request *rq; /* The corresponding request */ |
| 161 | u8 *buffer; /* Data buffer */ |
| 162 | u8 *current_position; /* Pointer into the above buffer */ |
| 163 | void (*callback) (ide_drive_t *); /* Called when this packet command is completed */ |
| 164 | u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */ |
| 165 | unsigned long flags; /* Status/Action bit flags: long for set_bit */ |
| 166 | } idefloppy_pc_t; |
| 167 | |
| 168 | /* |
| 169 | * Packet command flag bits. |
| 170 | */ |
| 171 | #define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */ |
| 172 | #define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */ |
| 173 | #define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */ |
| 174 | #define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */ |
| 175 | #define PC_WRITING 5 /* Data direction */ |
| 176 | |
| 177 | #define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */ |
| 178 | |
| 179 | /* |
| 180 | * Removable Block Access Capabilities Page |
| 181 | */ |
| 182 | typedef struct { |
| 183 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 184 | unsigned page_code :6; /* Page code - Should be 0x1b */ |
| 185 | unsigned reserved1_6 :1; /* Reserved */ |
| 186 | unsigned ps :1; /* Should be 0 */ |
| 187 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 188 | unsigned ps :1; /* Should be 0 */ |
| 189 | unsigned reserved1_6 :1; /* Reserved */ |
| 190 | unsigned page_code :6; /* Page code - Should be 0x1b */ |
| 191 | #else |
| 192 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 193 | #endif |
| 194 | u8 page_length; /* Page Length - Should be 0xa */ |
| 195 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 196 | unsigned reserved2 :6; |
| 197 | unsigned srfp :1; /* Supports reporting progress of format */ |
| 198 | unsigned sflp :1; /* System floppy type device */ |
| 199 | unsigned tlun :3; /* Total logical units supported by the device */ |
| 200 | unsigned reserved3 :3; |
| 201 | unsigned sml :1; /* Single / Multiple lun supported */ |
| 202 | unsigned ncd :1; /* Non cd optical device */ |
| 203 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 204 | unsigned sflp :1; /* System floppy type device */ |
| 205 | unsigned srfp :1; /* Supports reporting progress of format */ |
| 206 | unsigned reserved2 :6; |
| 207 | unsigned ncd :1; /* Non cd optical device */ |
| 208 | unsigned sml :1; /* Single / Multiple lun supported */ |
| 209 | unsigned reserved3 :3; |
| 210 | unsigned tlun :3; /* Total logical units supported by the device */ |
| 211 | #else |
| 212 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 213 | #endif |
| 214 | u8 reserved[8]; |
| 215 | } idefloppy_capabilities_page_t; |
| 216 | |
| 217 | /* |
| 218 | * Flexible disk page. |
| 219 | */ |
| 220 | typedef struct { |
| 221 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 222 | unsigned page_code :6; /* Page code - Should be 0x5 */ |
| 223 | unsigned reserved1_6 :1; /* Reserved */ |
| 224 | unsigned ps :1; /* The device is capable of saving the page */ |
| 225 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 226 | unsigned ps :1; /* The device is capable of saving the page */ |
| 227 | unsigned reserved1_6 :1; /* Reserved */ |
| 228 | unsigned page_code :6; /* Page code - Should be 0x5 */ |
| 229 | #else |
| 230 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 231 | #endif |
| 232 | u8 page_length; /* Page Length - Should be 0x1e */ |
| 233 | u16 transfer_rate; /* In kilobits per second */ |
| 234 | u8 heads, sectors; /* Number of heads, Number of sectors per track */ |
| 235 | u16 sector_size; /* Byes per sector */ |
| 236 | u16 cyls; /* Number of cylinders */ |
| 237 | u8 reserved10[10]; |
| 238 | u8 motor_delay; /* Motor off delay */ |
| 239 | u8 reserved21[7]; |
| 240 | u16 rpm; /* Rotations per minute */ |
| 241 | u8 reserved30[2]; |
| 242 | } idefloppy_flexible_disk_page_t; |
| 243 | |
| 244 | /* |
| 245 | * Format capacity |
| 246 | */ |
| 247 | typedef struct { |
| 248 | u8 reserved[3]; |
| 249 | u8 length; /* Length of the following descriptors in bytes */ |
| 250 | } idefloppy_capacity_header_t; |
| 251 | |
| 252 | typedef struct { |
| 253 | u32 blocks; /* Number of blocks */ |
| 254 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 255 | unsigned dc :2; /* Descriptor Code */ |
| 256 | unsigned reserved :6; |
| 257 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 258 | unsigned reserved :6; |
| 259 | unsigned dc :2; /* Descriptor Code */ |
| 260 | #else |
| 261 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 262 | #endif |
| 263 | u8 length_msb; /* Block Length (MSB)*/ |
| 264 | u16 length; /* Block Length */ |
| 265 | } idefloppy_capacity_descriptor_t; |
| 266 | |
| 267 | #define CAPACITY_INVALID 0x00 |
| 268 | #define CAPACITY_UNFORMATTED 0x01 |
| 269 | #define CAPACITY_CURRENT 0x02 |
| 270 | #define CAPACITY_NO_CARTRIDGE 0x03 |
| 271 | |
| 272 | /* |
| 273 | * Most of our global data which we need to save even as we leave the |
| 274 | * driver due to an interrupt or a timer event is stored in a variable |
| 275 | * of type idefloppy_floppy_t, defined below. |
| 276 | */ |
| 277 | typedef struct ide_floppy_obj { |
| 278 | ide_drive_t *drive; |
| 279 | ide_driver_t *driver; |
| 280 | struct gendisk *disk; |
| 281 | struct kref kref; |
| 282 | |
| 283 | /* Current packet command */ |
| 284 | idefloppy_pc_t *pc; |
| 285 | /* Last failed packet command */ |
| 286 | idefloppy_pc_t *failed_pc; |
| 287 | /* Packet command stack */ |
| 288 | idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK]; |
| 289 | /* Next free packet command storage space */ |
| 290 | int pc_stack_index; |
| 291 | struct request rq_stack[IDEFLOPPY_PC_STACK]; |
| 292 | /* We implement a circular array */ |
| 293 | int rq_stack_index; |
| 294 | |
| 295 | /* |
| 296 | * Last error information |
| 297 | */ |
| 298 | u8 sense_key, asc, ascq; |
| 299 | /* delay this long before sending packet command */ |
| 300 | u8 ticks; |
| 301 | int progress_indication; |
| 302 | |
| 303 | /* |
| 304 | * Device information |
| 305 | */ |
| 306 | /* Current format */ |
| 307 | int blocks, block_size, bs_factor; |
| 308 | /* Last format capacity */ |
| 309 | idefloppy_capacity_descriptor_t capacity; |
| 310 | /* Copy of the flexible disk page */ |
| 311 | idefloppy_flexible_disk_page_t flexible_disk_page; |
| 312 | /* Write protect */ |
| 313 | int wp; |
| 314 | /* Supports format progress report */ |
| 315 | int srfp; |
| 316 | /* Status/Action flags */ |
| 317 | unsigned long flags; |
| 318 | } idefloppy_floppy_t; |
| 319 | |
Bartlomiej Zolnierkiewicz | c40d3d3 | 2005-08-18 22:09:21 +0200 | [diff] [blame^] | 320 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
| 322 | /* |
| 323 | * Floppy flag bits values. |
| 324 | */ |
| 325 | #define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */ |
| 326 | #define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */ |
| 327 | #define IDEFLOPPY_USE_READ12 2 /* Use READ12/WRITE12 or READ10/WRITE10 */ |
| 328 | #define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */ |
| 329 | #define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */ |
| 330 | #define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */ |
| 331 | |
| 332 | /* |
| 333 | * ATAPI floppy drive packet commands |
| 334 | */ |
| 335 | #define IDEFLOPPY_FORMAT_UNIT_CMD 0x04 |
| 336 | #define IDEFLOPPY_INQUIRY_CMD 0x12 |
| 337 | #define IDEFLOPPY_MODE_SELECT_CMD 0x55 |
| 338 | #define IDEFLOPPY_MODE_SENSE_CMD 0x5a |
| 339 | #define IDEFLOPPY_READ10_CMD 0x28 |
| 340 | #define IDEFLOPPY_READ12_CMD 0xa8 |
| 341 | #define IDEFLOPPY_READ_CAPACITY_CMD 0x23 |
| 342 | #define IDEFLOPPY_REQUEST_SENSE_CMD 0x03 |
| 343 | #define IDEFLOPPY_PREVENT_REMOVAL_CMD 0x1e |
| 344 | #define IDEFLOPPY_SEEK_CMD 0x2b |
| 345 | #define IDEFLOPPY_START_STOP_CMD 0x1b |
| 346 | #define IDEFLOPPY_TEST_UNIT_READY_CMD 0x00 |
| 347 | #define IDEFLOPPY_VERIFY_CMD 0x2f |
| 348 | #define IDEFLOPPY_WRITE10_CMD 0x2a |
| 349 | #define IDEFLOPPY_WRITE12_CMD 0xaa |
| 350 | #define IDEFLOPPY_WRITE_VERIFY_CMD 0x2e |
| 351 | |
| 352 | /* |
| 353 | * Defines for the mode sense command |
| 354 | */ |
| 355 | #define MODE_SENSE_CURRENT 0x00 |
| 356 | #define MODE_SENSE_CHANGEABLE 0x01 |
| 357 | #define MODE_SENSE_DEFAULT 0x02 |
| 358 | #define MODE_SENSE_SAVED 0x03 |
| 359 | |
| 360 | /* |
| 361 | * IOCTLs used in low-level formatting. |
| 362 | */ |
| 363 | |
| 364 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 |
| 365 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 |
| 366 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 |
| 367 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 |
| 368 | |
| 369 | #if 0 |
| 370 | /* |
| 371 | * Special requests for our block device strategy routine. |
| 372 | */ |
| 373 | #define IDEFLOPPY_FIRST_RQ 90 |
| 374 | |
| 375 | /* |
| 376 | * IDEFLOPPY_PC_RQ is used to queue a packet command in the request queue. |
| 377 | */ |
| 378 | #define IDEFLOPPY_PC_RQ 90 |
| 379 | |
| 380 | #define IDEFLOPPY_LAST_RQ 90 |
| 381 | |
| 382 | /* |
| 383 | * A macro which can be used to check if a given request command |
| 384 | * originated in the driver or in the buffer cache layer. |
| 385 | */ |
| 386 | #define IDEFLOPPY_RQ_CMD(cmd) ((cmd >= IDEFLOPPY_FIRST_RQ) && (cmd <= IDEFLOPPY_LAST_RQ)) |
| 387 | |
| 388 | #endif |
| 389 | |
| 390 | /* |
| 391 | * Error codes which are returned in rq->errors to the higher part |
| 392 | * of the driver. |
| 393 | */ |
| 394 | #define IDEFLOPPY_ERROR_GENERAL 101 |
| 395 | |
| 396 | /* |
| 397 | * The following is used to format the general configuration word of |
| 398 | * the ATAPI IDENTIFY DEVICE command. |
| 399 | */ |
| 400 | struct idefloppy_id_gcw { |
| 401 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 402 | unsigned packet_size :2; /* Packet Size */ |
| 403 | unsigned reserved234 :3; /* Reserved */ |
| 404 | unsigned drq_type :2; /* Command packet DRQ type */ |
| 405 | unsigned removable :1; /* Removable media */ |
| 406 | unsigned device_type :5; /* Device type */ |
| 407 | unsigned reserved13 :1; /* Reserved */ |
| 408 | unsigned protocol :2; /* Protocol type */ |
| 409 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 410 | unsigned protocol :2; /* Protocol type */ |
| 411 | unsigned reserved13 :1; /* Reserved */ |
| 412 | unsigned device_type :5; /* Device type */ |
| 413 | unsigned removable :1; /* Removable media */ |
| 414 | unsigned drq_type :2; /* Command packet DRQ type */ |
| 415 | unsigned reserved234 :3; /* Reserved */ |
| 416 | unsigned packet_size :2; /* Packet Size */ |
| 417 | #else |
| 418 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 419 | #endif |
| 420 | }; |
| 421 | |
| 422 | /* |
| 423 | * INQUIRY packet command - Data Format |
| 424 | */ |
| 425 | typedef struct { |
| 426 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 427 | unsigned device_type :5; /* Peripheral Device Type */ |
| 428 | unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */ |
| 429 | unsigned reserved1_6t0 :7; /* Reserved */ |
| 430 | unsigned rmb :1; /* Removable Medium Bit */ |
| 431 | unsigned ansi_version :3; /* ANSI Version */ |
| 432 | unsigned ecma_version :3; /* ECMA Version */ |
| 433 | unsigned iso_version :2; /* ISO Version */ |
| 434 | unsigned response_format :4; /* Response Data Format */ |
| 435 | unsigned reserved3_45 :2; /* Reserved */ |
| 436 | unsigned reserved3_6 :1; /* TrmIOP - Reserved */ |
| 437 | unsigned reserved3_7 :1; /* AENC - Reserved */ |
| 438 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 439 | unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */ |
| 440 | unsigned device_type :5; /* Peripheral Device Type */ |
| 441 | unsigned rmb :1; /* Removable Medium Bit */ |
| 442 | unsigned reserved1_6t0 :7; /* Reserved */ |
| 443 | unsigned iso_version :2; /* ISO Version */ |
| 444 | unsigned ecma_version :3; /* ECMA Version */ |
| 445 | unsigned ansi_version :3; /* ANSI Version */ |
| 446 | unsigned reserved3_7 :1; /* AENC - Reserved */ |
| 447 | unsigned reserved3_6 :1; /* TrmIOP - Reserved */ |
| 448 | unsigned reserved3_45 :2; /* Reserved */ |
| 449 | unsigned response_format :4; /* Response Data Format */ |
| 450 | #else |
| 451 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 452 | #endif |
| 453 | u8 additional_length; /* Additional Length (total_length-4) */ |
| 454 | u8 rsv5, rsv6, rsv7; /* Reserved */ |
| 455 | u8 vendor_id[8]; /* Vendor Identification */ |
| 456 | u8 product_id[16]; /* Product Identification */ |
| 457 | u8 revision_level[4]; /* Revision Level */ |
| 458 | u8 vendor_specific[20]; /* Vendor Specific - Optional */ |
| 459 | u8 reserved56t95[40]; /* Reserved - Optional */ |
| 460 | /* Additional information may be returned */ |
| 461 | } idefloppy_inquiry_result_t; |
| 462 | |
| 463 | /* |
| 464 | * REQUEST SENSE packet command result - Data Format. |
| 465 | */ |
| 466 | typedef struct { |
| 467 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 468 | unsigned error_code :7; /* Current error (0x70) */ |
| 469 | unsigned valid :1; /* The information field conforms to SFF-8070i */ |
| 470 | u8 reserved1 :8; /* Reserved */ |
| 471 | unsigned sense_key :4; /* Sense Key */ |
| 472 | unsigned reserved2_4 :1; /* Reserved */ |
| 473 | unsigned ili :1; /* Incorrect Length Indicator */ |
| 474 | unsigned reserved2_67 :2; |
| 475 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 476 | unsigned valid :1; /* The information field conforms to SFF-8070i */ |
| 477 | unsigned error_code :7; /* Current error (0x70) */ |
| 478 | u8 reserved1 :8; /* Reserved */ |
| 479 | unsigned reserved2_67 :2; |
| 480 | unsigned ili :1; /* Incorrect Length Indicator */ |
| 481 | unsigned reserved2_4 :1; /* Reserved */ |
| 482 | unsigned sense_key :4; /* Sense Key */ |
| 483 | #else |
| 484 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 485 | #endif |
| 486 | u32 information __attribute__ ((packed)); |
| 487 | u8 asl; /* Additional sense length (n-7) */ |
| 488 | u32 command_specific; /* Additional command specific information */ |
| 489 | u8 asc; /* Additional Sense Code */ |
| 490 | u8 ascq; /* Additional Sense Code Qualifier */ |
| 491 | u8 replaceable_unit_code; /* Field Replaceable Unit Code */ |
| 492 | u8 sksv[3]; |
| 493 | u8 pad[2]; /* Padding to 20 bytes */ |
| 494 | } idefloppy_request_sense_result_t; |
| 495 | |
| 496 | /* |
| 497 | * Pages of the SELECT SENSE / MODE SENSE packet commands. |
| 498 | */ |
| 499 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b |
| 500 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 |
| 501 | |
| 502 | /* |
| 503 | * Mode Parameter Header for the MODE SENSE packet command |
| 504 | */ |
| 505 | typedef struct { |
| 506 | u16 mode_data_length; /* Length of the following data transfer */ |
| 507 | u8 medium_type; /* Medium Type */ |
| 508 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 509 | unsigned reserved3 :7; |
| 510 | unsigned wp :1; /* Write protect */ |
| 511 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 512 | unsigned wp :1; /* Write protect */ |
| 513 | unsigned reserved3 :7; |
| 514 | #else |
| 515 | #error "Bitfield endianness not defined! Check your byteorder.h" |
| 516 | #endif |
| 517 | u8 reserved[4]; |
| 518 | } idefloppy_mode_parameter_header_t; |
| 519 | |
| 520 | static DECLARE_MUTEX(idefloppy_ref_sem); |
| 521 | |
| 522 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) |
| 523 | |
| 524 | #define ide_floppy_g(disk) \ |
| 525 | container_of((disk)->private_data, struct ide_floppy_obj, driver) |
| 526 | |
| 527 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) |
| 528 | { |
| 529 | struct ide_floppy_obj *floppy = NULL; |
| 530 | |
| 531 | down(&idefloppy_ref_sem); |
| 532 | floppy = ide_floppy_g(disk); |
| 533 | if (floppy) |
| 534 | kref_get(&floppy->kref); |
| 535 | up(&idefloppy_ref_sem); |
| 536 | return floppy; |
| 537 | } |
| 538 | |
| 539 | static void ide_floppy_release(struct kref *); |
| 540 | |
| 541 | static void ide_floppy_put(struct ide_floppy_obj *floppy) |
| 542 | { |
| 543 | down(&idefloppy_ref_sem); |
| 544 | kref_put(&floppy->kref, ide_floppy_release); |
| 545 | up(&idefloppy_ref_sem); |
| 546 | } |
| 547 | |
| 548 | /* |
| 549 | * Too bad. The drive wants to send us data which we are not ready to accept. |
| 550 | * Just throw it away. |
| 551 | */ |
| 552 | static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount) |
| 553 | { |
| 554 | while (bcount--) |
| 555 | (void) HWIF(drive)->INB(IDE_DATA_REG); |
| 556 | } |
| 557 | |
| 558 | #if IDEFLOPPY_DEBUG_BUGS |
| 559 | static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount) |
| 560 | { |
| 561 | while (bcount--) |
| 562 | HWIF(drive)->OUTB(0, IDE_DATA_REG); |
| 563 | } |
| 564 | #endif /* IDEFLOPPY_DEBUG_BUGS */ |
| 565 | |
| 566 | |
| 567 | /* |
| 568 | * idefloppy_do_end_request is used to finish servicing a request. |
| 569 | * |
| 570 | * For read/write requests, we will call ide_end_request to pass to the |
| 571 | * next buffer. |
| 572 | */ |
| 573 | static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
| 574 | { |
| 575 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 576 | struct request *rq = HWGROUP(drive)->rq; |
| 577 | int error; |
| 578 | |
| 579 | debug_log(KERN_INFO "Reached idefloppy_end_request\n"); |
| 580 | |
| 581 | switch (uptodate) { |
| 582 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
| 583 | case 1: error = 0; break; |
| 584 | default: error = uptodate; |
| 585 | } |
| 586 | if (error) |
| 587 | floppy->failed_pc = NULL; |
| 588 | /* Why does this happen? */ |
| 589 | if (!rq) |
| 590 | return 0; |
| 591 | if (!(rq->flags & REQ_SPECIAL)) { //if (!IDEFLOPPY_RQ_CMD (rq->cmd)) { |
| 592 | /* our real local end request function */ |
| 593 | ide_end_request(drive, uptodate, nsecs); |
| 594 | return 0; |
| 595 | } |
| 596 | rq->errors = error; |
| 597 | /* fixme: need to move this local also */ |
| 598 | ide_end_drive_cmd(drive, 0, 0); |
| 599 | return 0; |
| 600 | } |
| 601 | |
| 602 | static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) |
| 603 | { |
| 604 | struct request *rq = pc->rq; |
| 605 | struct bio_vec *bvec; |
| 606 | struct bio *bio; |
| 607 | unsigned long flags; |
| 608 | char *data; |
| 609 | int count, i, done = 0; |
| 610 | |
| 611 | rq_for_each_bio(bio, rq) { |
| 612 | bio_for_each_segment(bvec, bio, i) { |
| 613 | if (!bcount) |
| 614 | break; |
| 615 | |
| 616 | count = min(bvec->bv_len, bcount); |
| 617 | |
| 618 | data = bvec_kmap_irq(bvec, &flags); |
| 619 | drive->hwif->atapi_input_bytes(drive, data, count); |
| 620 | bvec_kunmap_irq(data, &flags); |
| 621 | |
| 622 | bcount -= count; |
| 623 | pc->b_count += count; |
| 624 | done += count; |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | idefloppy_do_end_request(drive, 1, done >> 9); |
| 629 | |
| 630 | if (bcount) { |
| 631 | printk(KERN_ERR "%s: leftover data in idefloppy_input_buffers, bcount == %d\n", drive->name, bcount); |
| 632 | idefloppy_discard_data(drive, bcount); |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) |
| 637 | { |
| 638 | struct request *rq = pc->rq; |
| 639 | struct bio *bio; |
| 640 | struct bio_vec *bvec; |
| 641 | unsigned long flags; |
| 642 | int count, i, done = 0; |
| 643 | char *data; |
| 644 | |
| 645 | rq_for_each_bio(bio, rq) { |
| 646 | bio_for_each_segment(bvec, bio, i) { |
| 647 | if (!bcount) |
| 648 | break; |
| 649 | |
| 650 | count = min(bvec->bv_len, bcount); |
| 651 | |
| 652 | data = bvec_kmap_irq(bvec, &flags); |
| 653 | drive->hwif->atapi_output_bytes(drive, data, count); |
| 654 | bvec_kunmap_irq(data, &flags); |
| 655 | |
| 656 | bcount -= count; |
| 657 | pc->b_count += count; |
| 658 | done += count; |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | idefloppy_do_end_request(drive, 1, done >> 9); |
| 663 | |
Jan Beulich | c7ea4b3 | 2005-06-23 00:09:59 -0700 | [diff] [blame] | 664 | #if IDEFLOPPY_DEBUG_BUGS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | if (bcount) { |
| 666 | printk(KERN_ERR "%s: leftover data in idefloppy_output_buffers, bcount == %d\n", drive->name, bcount); |
| 667 | idefloppy_write_zeros(drive, bcount); |
| 668 | } |
Jan Beulich | c7ea4b3 | 2005-06-23 00:09:59 -0700 | [diff] [blame] | 669 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | } |
| 671 | |
| 672 | static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc) |
| 673 | { |
| 674 | struct request *rq = pc->rq; |
| 675 | struct bio *bio = rq->bio; |
| 676 | |
| 677 | while ((bio = rq->bio) != NULL) |
| 678 | idefloppy_do_end_request(drive, 1, 0); |
| 679 | } |
| 680 | |
| 681 | /* |
| 682 | * idefloppy_queue_pc_head generates a new packet command request in front |
| 683 | * of the request queue, before the current request, so that it will be |
| 684 | * processed immediately, on the next pass through the driver. |
| 685 | */ |
| 686 | static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq) |
| 687 | { |
| 688 | struct ide_floppy_obj *floppy = drive->driver_data; |
| 689 | |
| 690 | ide_init_drive_cmd(rq); |
| 691 | rq->buffer = (char *) pc; |
| 692 | rq->flags = REQ_SPECIAL; //rq->cmd = IDEFLOPPY_PC_RQ; |
| 693 | rq->rq_disk = floppy->disk; |
| 694 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); |
| 695 | } |
| 696 | |
| 697 | static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive) |
| 698 | { |
| 699 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 700 | |
| 701 | if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK) |
| 702 | floppy->pc_stack_index=0; |
| 703 | return (&floppy->pc_stack[floppy->pc_stack_index++]); |
| 704 | } |
| 705 | |
| 706 | static struct request *idefloppy_next_rq_storage (ide_drive_t *drive) |
| 707 | { |
| 708 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 709 | |
| 710 | if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) |
| 711 | floppy->rq_stack_index = 0; |
| 712 | return (&floppy->rq_stack[floppy->rq_stack_index++]); |
| 713 | } |
| 714 | |
| 715 | /* |
| 716 | * idefloppy_analyze_error is called on each failed packet command retry |
| 717 | * to analyze the request sense. |
| 718 | */ |
| 719 | static void idefloppy_analyze_error (ide_drive_t *drive,idefloppy_request_sense_result_t *result) |
| 720 | { |
| 721 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 722 | |
| 723 | floppy->sense_key = result->sense_key; |
| 724 | floppy->asc = result->asc; |
| 725 | floppy->ascq = result->ascq; |
| 726 | floppy->progress_indication = result->sksv[0] & 0x80 ? |
| 727 | (u16)get_unaligned((u16 *)(result->sksv+1)):0x10000; |
| 728 | if (floppy->failed_pc) |
| 729 | debug_log(KERN_INFO "ide-floppy: pc = %x, sense key = %x, " |
| 730 | "asc = %x, ascq = %x\n", floppy->failed_pc->c[0], |
| 731 | result->sense_key, result->asc, result->ascq); |
| 732 | else |
| 733 | debug_log(KERN_INFO "ide-floppy: sense key = %x, asc = %x, " |
| 734 | "ascq = %x\n", result->sense_key, |
| 735 | result->asc, result->ascq); |
| 736 | } |
| 737 | |
| 738 | static void idefloppy_request_sense_callback (ide_drive_t *drive) |
| 739 | { |
| 740 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 741 | |
| 742 | debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); |
| 743 | |
| 744 | if (!floppy->pc->error) { |
| 745 | idefloppy_analyze_error(drive,(idefloppy_request_sense_result_t *) floppy->pc->buffer); |
| 746 | idefloppy_do_end_request(drive, 1, 0); |
| 747 | } else { |
| 748 | printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting request!\n"); |
| 749 | idefloppy_do_end_request(drive, 0, 0); |
| 750 | } |
| 751 | } |
| 752 | |
| 753 | /* |
| 754 | * General packet command callback function. |
| 755 | */ |
| 756 | static void idefloppy_pc_callback (ide_drive_t *drive) |
| 757 | { |
| 758 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 759 | |
| 760 | debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); |
| 761 | |
| 762 | idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0); |
| 763 | } |
| 764 | |
| 765 | /* |
| 766 | * idefloppy_init_pc initializes a packet command. |
| 767 | */ |
| 768 | static void idefloppy_init_pc (idefloppy_pc_t *pc) |
| 769 | { |
| 770 | memset(pc->c, 0, 12); |
| 771 | pc->retries = 0; |
| 772 | pc->flags = 0; |
| 773 | pc->request_transfer = 0; |
| 774 | pc->buffer = pc->pc_buffer; |
| 775 | pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE; |
| 776 | pc->callback = &idefloppy_pc_callback; |
| 777 | } |
| 778 | |
| 779 | static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc) |
| 780 | { |
| 781 | idefloppy_init_pc(pc); |
| 782 | pc->c[0] = IDEFLOPPY_REQUEST_SENSE_CMD; |
| 783 | pc->c[4] = 255; |
| 784 | pc->request_transfer = 18; |
| 785 | pc->callback = &idefloppy_request_sense_callback; |
| 786 | } |
| 787 | |
| 788 | /* |
| 789 | * idefloppy_retry_pc is called when an error was detected during the |
| 790 | * last packet command. We queue a request sense packet command in |
| 791 | * the head of the request list. |
| 792 | */ |
| 793 | static void idefloppy_retry_pc (ide_drive_t *drive) |
| 794 | { |
| 795 | idefloppy_pc_t *pc; |
| 796 | struct request *rq; |
| 797 | atapi_error_t error; |
| 798 | |
| 799 | error.all = HWIF(drive)->INB(IDE_ERROR_REG); |
| 800 | pc = idefloppy_next_pc_storage(drive); |
| 801 | rq = idefloppy_next_rq_storage(drive); |
| 802 | idefloppy_create_request_sense_cmd(pc); |
| 803 | idefloppy_queue_pc_head(drive, pc, rq); |
| 804 | } |
| 805 | |
| 806 | /* |
| 807 | * idefloppy_pc_intr is the usual interrupt handler which will be called |
| 808 | * during a packet command. |
| 809 | */ |
| 810 | static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive) |
| 811 | { |
| 812 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 813 | atapi_status_t status; |
| 814 | atapi_bcount_t bcount; |
| 815 | atapi_ireason_t ireason; |
| 816 | idefloppy_pc_t *pc = floppy->pc; |
| 817 | struct request *rq = pc->rq; |
| 818 | unsigned int temp; |
| 819 | |
| 820 | debug_log(KERN_INFO "ide-floppy: Reached %s interrupt handler\n", |
| 821 | __FUNCTION__); |
| 822 | |
| 823 | if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { |
| 824 | if (HWIF(drive)->ide_dma_end(drive)) { |
| 825 | set_bit(PC_DMA_ERROR, &pc->flags); |
| 826 | } else { |
| 827 | pc->actually_transferred = pc->request_transfer; |
| 828 | idefloppy_update_buffers(drive, pc); |
| 829 | } |
| 830 | debug_log(KERN_INFO "ide-floppy: DMA finished\n"); |
| 831 | } |
| 832 | |
| 833 | /* Clear the interrupt */ |
| 834 | status.all = HWIF(drive)->INB(IDE_STATUS_REG); |
| 835 | |
| 836 | if (!status.b.drq) { /* No more interrupts */ |
| 837 | debug_log(KERN_INFO "Packet command completed, %d bytes " |
| 838 | "transferred\n", pc->actually_transferred); |
| 839 | clear_bit(PC_DMA_IN_PROGRESS, &pc->flags); |
| 840 | |
| 841 | local_irq_enable(); |
| 842 | |
| 843 | if (status.b.check || test_bit(PC_DMA_ERROR, &pc->flags)) { |
| 844 | /* Error detected */ |
| 845 | debug_log(KERN_INFO "ide-floppy: %s: I/O error\n", |
| 846 | drive->name); |
| 847 | rq->errors++; |
| 848 | if (pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) { |
| 849 | printk(KERN_ERR "ide-floppy: I/O error in " |
| 850 | "request sense command\n"); |
| 851 | return ide_do_reset(drive); |
| 852 | } |
| 853 | /* Retry operation */ |
| 854 | idefloppy_retry_pc(drive); |
| 855 | /* queued, but not started */ |
| 856 | return ide_stopped; |
| 857 | } |
| 858 | pc->error = 0; |
| 859 | if (floppy->failed_pc == pc) |
| 860 | floppy->failed_pc = NULL; |
| 861 | /* Command finished - Call the callback function */ |
| 862 | pc->callback(drive); |
| 863 | return ide_stopped; |
| 864 | } |
| 865 | |
| 866 | if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { |
| 867 | printk(KERN_ERR "ide-floppy: The floppy wants to issue " |
| 868 | "more interrupts in DMA mode\n"); |
| 869 | (void)__ide_dma_off(drive); |
| 870 | return ide_do_reset(drive); |
| 871 | } |
| 872 | |
| 873 | /* Get the number of bytes to transfer */ |
| 874 | bcount.b.high = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 875 | bcount.b.low = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 876 | /* on this interrupt */ |
| 877 | ireason.all = HWIF(drive)->INB(IDE_IREASON_REG); |
| 878 | |
| 879 | if (ireason.b.cod) { |
| 880 | printk(KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n"); |
| 881 | return ide_do_reset(drive); |
| 882 | } |
| 883 | if (ireason.b.io == test_bit(PC_WRITING, &pc->flags)) { |
| 884 | /* Hopefully, we will never get here */ |
| 885 | printk(KERN_ERR "ide-floppy: We wanted to %s, ", |
| 886 | ireason.b.io ? "Write":"Read"); |
| 887 | printk(KERN_ERR "but the floppy wants us to %s !\n", |
| 888 | ireason.b.io ? "Read":"Write"); |
| 889 | return ide_do_reset(drive); |
| 890 | } |
| 891 | if (!test_bit(PC_WRITING, &pc->flags)) { |
| 892 | /* Reading - Check that we have enough space */ |
| 893 | temp = pc->actually_transferred + bcount.all; |
| 894 | if (temp > pc->request_transfer) { |
| 895 | if (temp > pc->buffer_size) { |
| 896 | printk(KERN_ERR "ide-floppy: The floppy wants " |
| 897 | "to send us more data than expected " |
| 898 | "- discarding data\n"); |
| 899 | idefloppy_discard_data(drive,bcount.all); |
| 900 | if (HWGROUP(drive)->handler != NULL) |
| 901 | BUG(); |
| 902 | ide_set_handler(drive, |
| 903 | &idefloppy_pc_intr, |
| 904 | IDEFLOPPY_WAIT_CMD, |
| 905 | NULL); |
| 906 | return ide_started; |
| 907 | } |
| 908 | debug_log(KERN_NOTICE "ide-floppy: The floppy wants to " |
| 909 | "send us more data than expected - " |
| 910 | "allowing transfer\n"); |
| 911 | } |
| 912 | } |
| 913 | if (test_bit(PC_WRITING, &pc->flags)) { |
| 914 | if (pc->buffer != NULL) |
| 915 | /* Write the current buffer */ |
| 916 | HWIF(drive)->atapi_output_bytes(drive, |
| 917 | pc->current_position, |
| 918 | bcount.all); |
| 919 | else |
| 920 | idefloppy_output_buffers(drive, pc, bcount.all); |
| 921 | } else { |
| 922 | if (pc->buffer != NULL) |
| 923 | /* Read the current buffer */ |
| 924 | HWIF(drive)->atapi_input_bytes(drive, |
| 925 | pc->current_position, |
| 926 | bcount.all); |
| 927 | else |
| 928 | idefloppy_input_buffers(drive, pc, bcount.all); |
| 929 | } |
| 930 | /* Update the current position */ |
| 931 | pc->actually_transferred += bcount.all; |
| 932 | pc->current_position += bcount.all; |
| 933 | |
| 934 | if (HWGROUP(drive)->handler != NULL) |
| 935 | BUG(); |
| 936 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); /* And set the interrupt handler again */ |
| 937 | return ide_started; |
| 938 | } |
| 939 | |
| 940 | /* |
| 941 | * This is the original routine that did the packet transfer. |
| 942 | * It fails at high speeds on the Iomega ZIP drive, so there's a slower version |
| 943 | * for that drive below. The algorithm is chosen based on drive type |
| 944 | */ |
| 945 | static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive) |
| 946 | { |
| 947 | ide_startstop_t startstop; |
| 948 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 949 | atapi_ireason_t ireason; |
| 950 | |
| 951 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { |
| 952 | printk(KERN_ERR "ide-floppy: Strange, packet command " |
| 953 | "initiated yet DRQ isn't asserted\n"); |
| 954 | return startstop; |
| 955 | } |
| 956 | ireason.all = HWIF(drive)->INB(IDE_IREASON_REG); |
| 957 | if (!ireason.b.cod || ireason.b.io) { |
| 958 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while " |
| 959 | "issuing a packet command\n"); |
| 960 | return ide_do_reset(drive); |
| 961 | } |
| 962 | if (HWGROUP(drive)->handler != NULL) |
| 963 | BUG(); |
| 964 | /* Set the interrupt routine */ |
| 965 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); |
| 966 | /* Send the actual packet */ |
| 967 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); |
| 968 | return ide_started; |
| 969 | } |
| 970 | |
| 971 | |
| 972 | /* |
| 973 | * What we have here is a classic case of a top half / bottom half |
| 974 | * interrupt service routine. In interrupt mode, the device sends |
| 975 | * an interrupt to signal it's ready to receive a packet. However, |
| 976 | * we need to delay about 2-3 ticks before issuing the packet or we |
| 977 | * gets in trouble. |
| 978 | * |
| 979 | * So, follow carefully. transfer_pc1 is called as an interrupt (or |
| 980 | * directly). In either case, when the device says it's ready for a |
| 981 | * packet, we schedule the packet transfer to occur about 2-3 ticks |
| 982 | * later in transfer_pc2. |
| 983 | */ |
| 984 | static int idefloppy_transfer_pc2 (ide_drive_t *drive) |
| 985 | { |
| 986 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 987 | |
| 988 | /* Send the actual packet */ |
| 989 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); |
| 990 | /* Timeout for the packet command */ |
| 991 | return IDEFLOPPY_WAIT_CMD; |
| 992 | } |
| 993 | |
| 994 | static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive) |
| 995 | { |
| 996 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 997 | ide_startstop_t startstop; |
| 998 | atapi_ireason_t ireason; |
| 999 | |
| 1000 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { |
| 1001 | printk(KERN_ERR "ide-floppy: Strange, packet command " |
| 1002 | "initiated yet DRQ isn't asserted\n"); |
| 1003 | return startstop; |
| 1004 | } |
| 1005 | ireason.all = HWIF(drive)->INB(IDE_IREASON_REG); |
| 1006 | if (!ireason.b.cod || ireason.b.io) { |
| 1007 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) " |
| 1008 | "while issuing a packet command\n"); |
| 1009 | return ide_do_reset(drive); |
| 1010 | } |
| 1011 | /* |
| 1012 | * The following delay solves a problem with ATAPI Zip 100 drives |
| 1013 | * where the Busy flag was apparently being deasserted before the |
| 1014 | * unit was ready to receive data. This was happening on a |
| 1015 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, |
| 1016 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually |
| 1017 | * used until after the packet is moved in about 50 msec. |
| 1018 | */ |
| 1019 | if (HWGROUP(drive)->handler != NULL) |
| 1020 | BUG(); |
| 1021 | ide_set_handler(drive, |
| 1022 | &idefloppy_pc_intr, /* service routine for packet command */ |
| 1023 | floppy->ticks, /* wait this long before "failing" */ |
| 1024 | &idefloppy_transfer_pc2); /* fail == transfer_pc2 */ |
| 1025 | return ide_started; |
| 1026 | } |
| 1027 | |
| 1028 | /** |
| 1029 | * idefloppy_should_report_error() |
| 1030 | * |
| 1031 | * Supresses error messages resulting from Medium not present |
| 1032 | */ |
| 1033 | static inline int idefloppy_should_report_error(idefloppy_floppy_t *floppy) |
| 1034 | { |
| 1035 | if (floppy->sense_key == 0x02 && |
| 1036 | floppy->asc == 0x3a && |
| 1037 | floppy->ascq == 0x00) |
| 1038 | return 0; |
| 1039 | return 1; |
| 1040 | } |
| 1041 | |
| 1042 | /* |
| 1043 | * Issue a packet command |
| 1044 | */ |
| 1045 | static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc) |
| 1046 | { |
| 1047 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1048 | ide_hwif_t *hwif = drive->hwif; |
| 1049 | atapi_feature_t feature; |
| 1050 | atapi_bcount_t bcount; |
| 1051 | ide_handler_t *pkt_xfer_routine; |
| 1052 | |
Jan Beulich | c7ea4b3 | 2005-06-23 00:09:59 -0700 | [diff] [blame] | 1053 | #if 0 /* Accessing floppy->pc is not valid here, the previous pc may be gone |
| 1054 | and have lived on another thread's stack; that stack may have become |
| 1055 | unmapped meanwhile (CONFIG_DEBUG_PAGEALLOC). */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | #if IDEFLOPPY_DEBUG_BUGS |
| 1057 | if (floppy->pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD && |
| 1058 | pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) { |
| 1059 | printk(KERN_ERR "ide-floppy: possible ide-floppy.c bug - " |
| 1060 | "Two request sense in serial were issued\n"); |
| 1061 | } |
| 1062 | #endif /* IDEFLOPPY_DEBUG_BUGS */ |
Jan Beulich | c7ea4b3 | 2005-06-23 00:09:59 -0700 | [diff] [blame] | 1063 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | |
| 1065 | if (floppy->failed_pc == NULL && |
| 1066 | pc->c[0] != IDEFLOPPY_REQUEST_SENSE_CMD) |
| 1067 | floppy->failed_pc = pc; |
| 1068 | /* Set the current packet command */ |
| 1069 | floppy->pc = pc; |
| 1070 | |
| 1071 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES || |
| 1072 | test_bit(PC_ABORT, &pc->flags)) { |
| 1073 | /* |
| 1074 | * We will "abort" retrying a packet command in case |
| 1075 | * a legitimate error code was received. |
| 1076 | */ |
| 1077 | if (!test_bit(PC_ABORT, &pc->flags)) { |
| 1078 | if (!test_bit(PC_SUPPRESS_ERROR, &pc->flags)) { |
| 1079 | if (idefloppy_should_report_error(floppy)) |
| 1080 | printk(KERN_ERR "ide-floppy: %s: I/O error, " |
| 1081 | "pc = %2x, key = %2x, " |
| 1082 | "asc = %2x, ascq = %2x\n", |
| 1083 | drive->name, pc->c[0], |
| 1084 | floppy->sense_key, |
| 1085 | floppy->asc, floppy->ascq); |
| 1086 | } |
| 1087 | /* Giving up */ |
| 1088 | pc->error = IDEFLOPPY_ERROR_GENERAL; |
| 1089 | } |
| 1090 | floppy->failed_pc = NULL; |
| 1091 | pc->callback(drive); |
| 1092 | return ide_stopped; |
| 1093 | } |
| 1094 | |
| 1095 | debug_log(KERN_INFO "Retry number - %d\n",pc->retries); |
| 1096 | |
| 1097 | pc->retries++; |
| 1098 | /* We haven't transferred any data yet */ |
| 1099 | pc->actually_transferred = 0; |
| 1100 | pc->current_position = pc->buffer; |
| 1101 | bcount.all = min(pc->request_transfer, 63 * 1024); |
| 1102 | |
| 1103 | if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) { |
| 1104 | (void)__ide_dma_off(drive); |
| 1105 | } |
| 1106 | feature.all = 0; |
| 1107 | |
| 1108 | if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma) |
| 1109 | feature.b.dma = !hwif->dma_setup(drive); |
| 1110 | |
| 1111 | if (IDE_CONTROL_REG) |
| 1112 | HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG); |
| 1113 | /* Use PIO/DMA */ |
| 1114 | HWIF(drive)->OUTB(feature.all, IDE_FEATURE_REG); |
| 1115 | HWIF(drive)->OUTB(bcount.b.high, IDE_BCOUNTH_REG); |
| 1116 | HWIF(drive)->OUTB(bcount.b.low, IDE_BCOUNTL_REG); |
| 1117 | HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG); |
| 1118 | |
| 1119 | if (feature.b.dma) { /* Begin DMA, if necessary */ |
| 1120 | set_bit(PC_DMA_IN_PROGRESS, &pc->flags); |
| 1121 | hwif->dma_start(drive); |
| 1122 | } |
| 1123 | |
| 1124 | /* Can we transfer the packet when we get the interrupt or wait? */ |
| 1125 | if (test_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) { |
| 1126 | /* wait */ |
| 1127 | pkt_xfer_routine = &idefloppy_transfer_pc1; |
| 1128 | } else { |
| 1129 | /* immediate */ |
| 1130 | pkt_xfer_routine = &idefloppy_transfer_pc; |
| 1131 | } |
| 1132 | |
| 1133 | if (test_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) { |
| 1134 | /* Issue the packet command */ |
| 1135 | ide_execute_command(drive, WIN_PACKETCMD, |
| 1136 | pkt_xfer_routine, |
| 1137 | IDEFLOPPY_WAIT_CMD, |
| 1138 | NULL); |
| 1139 | return ide_started; |
| 1140 | } else { |
| 1141 | /* Issue the packet command */ |
| 1142 | HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG); |
| 1143 | return (*pkt_xfer_routine) (drive); |
| 1144 | } |
| 1145 | } |
| 1146 | |
| 1147 | static void idefloppy_rw_callback (ide_drive_t *drive) |
| 1148 | { |
| 1149 | debug_log(KERN_INFO "ide-floppy: Reached idefloppy_rw_callback\n"); |
| 1150 | |
| 1151 | idefloppy_do_end_request(drive, 1, 0); |
| 1152 | return; |
| 1153 | } |
| 1154 | |
| 1155 | static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent) |
| 1156 | { |
| 1157 | debug_log(KERN_INFO "ide-floppy: creating prevent removal command, " |
| 1158 | "prevent = %d\n", prevent); |
| 1159 | |
| 1160 | idefloppy_init_pc(pc); |
| 1161 | pc->c[0] = IDEFLOPPY_PREVENT_REMOVAL_CMD; |
| 1162 | pc->c[4] = prevent; |
| 1163 | } |
| 1164 | |
| 1165 | static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc) |
| 1166 | { |
| 1167 | idefloppy_init_pc(pc); |
| 1168 | pc->c[0] = IDEFLOPPY_READ_CAPACITY_CMD; |
| 1169 | pc->c[7] = 255; |
| 1170 | pc->c[8] = 255; |
| 1171 | pc->request_transfer = 255; |
| 1172 | } |
| 1173 | |
| 1174 | static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l, |
| 1175 | int flags) |
| 1176 | { |
| 1177 | idefloppy_init_pc(pc); |
| 1178 | pc->c[0] = IDEFLOPPY_FORMAT_UNIT_CMD; |
| 1179 | pc->c[1] = 0x17; |
| 1180 | |
| 1181 | memset(pc->buffer, 0, 12); |
| 1182 | pc->buffer[1] = 0xA2; |
| 1183 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ |
| 1184 | |
| 1185 | if (flags & 1) /* Verify bit on... */ |
| 1186 | pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */ |
| 1187 | pc->buffer[3] = 8; |
| 1188 | |
| 1189 | put_unaligned(htonl(b), (unsigned int *)(&pc->buffer[4])); |
| 1190 | put_unaligned(htonl(l), (unsigned int *)(&pc->buffer[8])); |
| 1191 | pc->buffer_size=12; |
| 1192 | set_bit(PC_WRITING, &pc->flags); |
| 1193 | } |
| 1194 | |
| 1195 | /* |
| 1196 | * A mode sense command is used to "sense" floppy parameters. |
| 1197 | */ |
| 1198 | static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type) |
| 1199 | { |
| 1200 | u16 length = sizeof(idefloppy_mode_parameter_header_t); |
| 1201 | |
| 1202 | idefloppy_init_pc(pc); |
| 1203 | pc->c[0] = IDEFLOPPY_MODE_SENSE_CMD; |
| 1204 | pc->c[1] = 0; |
| 1205 | pc->c[2] = page_code + (type << 6); |
| 1206 | |
| 1207 | switch (page_code) { |
| 1208 | case IDEFLOPPY_CAPABILITIES_PAGE: |
| 1209 | length += 12; |
| 1210 | break; |
| 1211 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: |
| 1212 | length += 32; |
| 1213 | break; |
| 1214 | default: |
| 1215 | printk(KERN_ERR "ide-floppy: unsupported page code " |
| 1216 | "in create_mode_sense_cmd\n"); |
| 1217 | } |
| 1218 | put_unaligned(htons(length), (u16 *) &pc->c[7]); |
| 1219 | pc->request_transfer = length; |
| 1220 | } |
| 1221 | |
| 1222 | static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start) |
| 1223 | { |
| 1224 | idefloppy_init_pc(pc); |
| 1225 | pc->c[0] = IDEFLOPPY_START_STOP_CMD; |
| 1226 | pc->c[4] = start; |
| 1227 | } |
| 1228 | |
| 1229 | static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc) |
| 1230 | { |
| 1231 | idefloppy_init_pc(pc); |
| 1232 | pc->c[0] = IDEFLOPPY_TEST_UNIT_READY_CMD; |
| 1233 | } |
| 1234 | |
| 1235 | static void idefloppy_create_rw_cmd (idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq, unsigned long sector) |
| 1236 | { |
| 1237 | int block = sector / floppy->bs_factor; |
| 1238 | int blocks = rq->nr_sectors / floppy->bs_factor; |
| 1239 | int cmd = rq_data_dir(rq); |
| 1240 | |
| 1241 | debug_log("create_rw1%d_cmd: block == %d, blocks == %d\n", |
| 1242 | 2 * test_bit (IDEFLOPPY_USE_READ12, &floppy->flags), |
| 1243 | block, blocks); |
| 1244 | |
| 1245 | idefloppy_init_pc(pc); |
| 1246 | if (test_bit(IDEFLOPPY_USE_READ12, &floppy->flags)) { |
| 1247 | pc->c[0] = cmd == READ ? IDEFLOPPY_READ12_CMD : IDEFLOPPY_WRITE12_CMD; |
| 1248 | put_unaligned(htonl(blocks), (unsigned int *) &pc->c[6]); |
| 1249 | } else { |
| 1250 | pc->c[0] = cmd == READ ? IDEFLOPPY_READ10_CMD : IDEFLOPPY_WRITE10_CMD; |
| 1251 | put_unaligned(htons(blocks), (unsigned short *) &pc->c[7]); |
| 1252 | } |
| 1253 | put_unaligned(htonl(block), (unsigned int *) &pc->c[2]); |
| 1254 | pc->callback = &idefloppy_rw_callback; |
| 1255 | pc->rq = rq; |
| 1256 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; |
| 1257 | if (rq->flags & REQ_RW) |
| 1258 | set_bit(PC_WRITING, &pc->flags); |
| 1259 | pc->buffer = NULL; |
| 1260 | pc->request_transfer = pc->buffer_size = blocks * floppy->block_size; |
| 1261 | set_bit(PC_DMA_RECOMMENDED, &pc->flags); |
| 1262 | } |
| 1263 | |
| 1264 | static int |
| 1265 | idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq) |
| 1266 | { |
| 1267 | /* |
| 1268 | * just support eject for now, it would not be hard to make the |
| 1269 | * REQ_BLOCK_PC support fully-featured |
| 1270 | */ |
| 1271 | if (rq->cmd[0] != IDEFLOPPY_START_STOP_CMD) |
| 1272 | return 1; |
| 1273 | |
| 1274 | idefloppy_init_pc(pc); |
| 1275 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
| 1276 | return 0; |
| 1277 | } |
| 1278 | |
| 1279 | /* |
| 1280 | * idefloppy_do_request is our request handling function. |
| 1281 | */ |
| 1282 | static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, sector_t block_s) |
| 1283 | { |
| 1284 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1285 | idefloppy_pc_t *pc; |
| 1286 | unsigned long block = (unsigned long)block_s; |
| 1287 | |
| 1288 | debug_log(KERN_INFO "rq_status: %d, dev: %s, flags: %lx, errors: %d\n", |
| 1289 | rq->rq_status, |
| 1290 | rq->rq_disk ? rq->rq_disk->disk_name ? "?", |
| 1291 | rq->flags, rq->errors); |
| 1292 | debug_log(KERN_INFO "sector: %ld, nr_sectors: %ld, " |
| 1293 | "current_nr_sectors: %d\n", (long)rq->sector, |
| 1294 | rq->nr_sectors, rq->current_nr_sectors); |
| 1295 | |
| 1296 | if (rq->errors >= ERROR_MAX) { |
| 1297 | if (floppy->failed_pc != NULL) { |
| 1298 | if (idefloppy_should_report_error(floppy)) |
| 1299 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x," |
| 1300 | " key = %2x, asc = %2x, ascq = %2x\n", |
| 1301 | drive->name, floppy->failed_pc->c[0], |
| 1302 | floppy->sense_key, floppy->asc, floppy->ascq); |
| 1303 | } |
| 1304 | else |
| 1305 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", |
| 1306 | drive->name); |
| 1307 | idefloppy_do_end_request(drive, 0, 0); |
| 1308 | return ide_stopped; |
| 1309 | } |
| 1310 | if (rq->flags & REQ_CMD) { |
| 1311 | if (((long)rq->sector % floppy->bs_factor) || |
| 1312 | (rq->nr_sectors % floppy->bs_factor)) { |
| 1313 | printk("%s: unsupported r/w request size\n", |
| 1314 | drive->name); |
| 1315 | idefloppy_do_end_request(drive, 0, 0); |
| 1316 | return ide_stopped; |
| 1317 | } |
| 1318 | pc = idefloppy_next_pc_storage(drive); |
| 1319 | idefloppy_create_rw_cmd(floppy, pc, rq, block); |
| 1320 | } else if (rq->flags & REQ_SPECIAL) { |
| 1321 | pc = (idefloppy_pc_t *) rq->buffer; |
| 1322 | } else if (rq->flags & REQ_BLOCK_PC) { |
| 1323 | pc = idefloppy_next_pc_storage(drive); |
| 1324 | if (idefloppy_blockpc_cmd(floppy, pc, rq)) { |
| 1325 | idefloppy_do_end_request(drive, 0, 0); |
| 1326 | return ide_stopped; |
| 1327 | } |
| 1328 | } else { |
| 1329 | blk_dump_rq_flags(rq, |
| 1330 | "ide-floppy: unsupported command in queue"); |
| 1331 | idefloppy_do_end_request(drive, 0, 0); |
| 1332 | return ide_stopped; |
| 1333 | } |
| 1334 | |
| 1335 | pc->rq = rq; |
| 1336 | return idefloppy_issue_pc(drive, pc); |
| 1337 | } |
| 1338 | |
| 1339 | /* |
| 1340 | * idefloppy_queue_pc_tail adds a special packet command request to the |
| 1341 | * tail of the request queue, and waits for it to be serviced. |
| 1342 | */ |
| 1343 | static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc) |
| 1344 | { |
| 1345 | struct ide_floppy_obj *floppy = drive->driver_data; |
| 1346 | struct request rq; |
| 1347 | |
| 1348 | ide_init_drive_cmd (&rq); |
| 1349 | rq.buffer = (char *) pc; |
| 1350 | rq.flags = REQ_SPECIAL; // rq.cmd = IDEFLOPPY_PC_RQ; |
| 1351 | rq.rq_disk = floppy->disk; |
| 1352 | |
| 1353 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
| 1354 | } |
| 1355 | |
| 1356 | /* |
| 1357 | * Look at the flexible disk page parameters. We will ignore the CHS |
| 1358 | * capacity parameters and use the LBA parameters instead. |
| 1359 | */ |
| 1360 | static int idefloppy_get_flexible_disk_page (ide_drive_t *drive) |
| 1361 | { |
| 1362 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1363 | idefloppy_pc_t pc; |
| 1364 | idefloppy_mode_parameter_header_t *header; |
| 1365 | idefloppy_flexible_disk_page_t *page; |
| 1366 | int capacity, lba_capacity; |
| 1367 | |
| 1368 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, MODE_SENSE_CURRENT); |
| 1369 | if (idefloppy_queue_pc_tail(drive,&pc)) { |
| 1370 | printk(KERN_ERR "ide-floppy: Can't get flexible disk " |
| 1371 | "page parameters\n"); |
| 1372 | return 1; |
| 1373 | } |
| 1374 | header = (idefloppy_mode_parameter_header_t *) pc.buffer; |
| 1375 | floppy->wp = header->wp; |
| 1376 | set_disk_ro(floppy->disk, floppy->wp); |
| 1377 | page = (idefloppy_flexible_disk_page_t *) (header + 1); |
| 1378 | |
| 1379 | page->transfer_rate = ntohs(page->transfer_rate); |
| 1380 | page->sector_size = ntohs(page->sector_size); |
| 1381 | page->cyls = ntohs(page->cyls); |
| 1382 | page->rpm = ntohs(page->rpm); |
| 1383 | capacity = page->cyls * page->heads * page->sectors * page->sector_size; |
| 1384 | if (memcmp (page, &floppy->flexible_disk_page, sizeof (idefloppy_flexible_disk_page_t))) |
| 1385 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
| 1386 | "%d sector size, %d rpm\n", |
| 1387 | drive->name, capacity / 1024, page->cyls, |
| 1388 | page->heads, page->sectors, |
| 1389 | page->transfer_rate / 8, page->sector_size, page->rpm); |
| 1390 | |
| 1391 | floppy->flexible_disk_page = *page; |
| 1392 | drive->bios_cyl = page->cyls; |
| 1393 | drive->bios_head = page->heads; |
| 1394 | drive->bios_sect = page->sectors; |
| 1395 | lba_capacity = floppy->blocks * floppy->block_size; |
| 1396 | if (capacity < lba_capacity) { |
| 1397 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " |
| 1398 | "bytes, but the drive only handles %d\n", |
| 1399 | drive->name, lba_capacity, capacity); |
| 1400 | floppy->blocks = floppy->block_size ? capacity / floppy->block_size : 0; |
| 1401 | } |
| 1402 | return 0; |
| 1403 | } |
| 1404 | |
| 1405 | static int idefloppy_get_capability_page(ide_drive_t *drive) |
| 1406 | { |
| 1407 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1408 | idefloppy_pc_t pc; |
| 1409 | idefloppy_mode_parameter_header_t *header; |
| 1410 | idefloppy_capabilities_page_t *page; |
| 1411 | |
| 1412 | floppy->srfp = 0; |
| 1413 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, |
| 1414 | MODE_SENSE_CURRENT); |
| 1415 | |
| 1416 | set_bit(PC_SUPPRESS_ERROR, &pc.flags); |
| 1417 | if (idefloppy_queue_pc_tail(drive,&pc)) { |
| 1418 | return 1; |
| 1419 | } |
| 1420 | |
| 1421 | header = (idefloppy_mode_parameter_header_t *) pc.buffer; |
| 1422 | page= (idefloppy_capabilities_page_t *)(header+1); |
| 1423 | floppy->srfp = page->srfp; |
| 1424 | return (0); |
| 1425 | } |
| 1426 | |
| 1427 | /* |
| 1428 | * Determine if a media is present in the floppy drive, and if so, |
| 1429 | * its LBA capacity. |
| 1430 | */ |
| 1431 | static int idefloppy_get_capacity (ide_drive_t *drive) |
| 1432 | { |
| 1433 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1434 | idefloppy_pc_t pc; |
| 1435 | idefloppy_capacity_header_t *header; |
| 1436 | idefloppy_capacity_descriptor_t *descriptor; |
| 1437 | int i, descriptors, rc = 1, blocks, length; |
| 1438 | |
| 1439 | drive->bios_cyl = 0; |
| 1440 | drive->bios_head = drive->bios_sect = 0; |
| 1441 | floppy->blocks = floppy->bs_factor = 0; |
| 1442 | set_capacity(floppy->disk, 0); |
| 1443 | |
| 1444 | idefloppy_create_read_capacity_cmd(&pc); |
| 1445 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1446 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); |
| 1447 | return 1; |
| 1448 | } |
| 1449 | header = (idefloppy_capacity_header_t *) pc.buffer; |
| 1450 | descriptors = header->length / sizeof(idefloppy_capacity_descriptor_t); |
| 1451 | descriptor = (idefloppy_capacity_descriptor_t *) (header + 1); |
| 1452 | |
| 1453 | for (i = 0; i < descriptors; i++, descriptor++) { |
| 1454 | blocks = descriptor->blocks = ntohl(descriptor->blocks); |
| 1455 | length = descriptor->length = ntohs(descriptor->length); |
| 1456 | |
| 1457 | if (!i) |
| 1458 | { |
| 1459 | switch (descriptor->dc) { |
| 1460 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
| 1461 | case CAPACITY_UNFORMATTED: |
| 1462 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) |
| 1463 | /* |
| 1464 | * If it is not a clik drive, break out |
| 1465 | * (maintains previous driver behaviour) |
| 1466 | */ |
| 1467 | break; |
| 1468 | case CAPACITY_CURRENT: |
| 1469 | /* Normal Zip/LS-120 disks */ |
| 1470 | if (memcmp(descriptor, &floppy->capacity, sizeof (idefloppy_capacity_descriptor_t))) |
| 1471 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
| 1472 | "sector size\n", drive->name, |
| 1473 | blocks * length / 1024, blocks, length); |
| 1474 | floppy->capacity = *descriptor; |
| 1475 | if (!length || length % 512) { |
| 1476 | printk(KERN_NOTICE "%s: %d bytes block size " |
| 1477 | "not supported\n", drive->name, length); |
| 1478 | } else { |
| 1479 | floppy->blocks = blocks; |
| 1480 | floppy->block_size = length; |
| 1481 | if ((floppy->bs_factor = length / 512) != 1) |
| 1482 | printk(KERN_NOTICE "%s: warning: non " |
| 1483 | "512 bytes block size not " |
| 1484 | "fully supported\n", |
| 1485 | drive->name); |
| 1486 | rc = 0; |
| 1487 | } |
| 1488 | break; |
| 1489 | case CAPACITY_NO_CARTRIDGE: |
| 1490 | /* |
| 1491 | * This is a KERN_ERR so it appears on screen |
| 1492 | * for the user to see |
| 1493 | */ |
| 1494 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); |
| 1495 | break; |
| 1496 | case CAPACITY_INVALID: |
| 1497 | printk(KERN_ERR "%s: Invalid capacity for disk " |
| 1498 | "in drive\n", drive->name); |
| 1499 | break; |
| 1500 | } |
| 1501 | } |
| 1502 | if (!i) { |
| 1503 | debug_log( "Descriptor 0 Code: %d\n", |
| 1504 | descriptor->dc); |
| 1505 | } |
| 1506 | debug_log( "Descriptor %d: %dkB, %d blocks, %d " |
| 1507 | "sector size\n", i, blocks * length / 1024, blocks, |
| 1508 | length); |
| 1509 | } |
| 1510 | |
| 1511 | /* Clik! disk does not support get_flexible_disk_page */ |
| 1512 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { |
| 1513 | (void) idefloppy_get_flexible_disk_page(drive); |
| 1514 | } |
| 1515 | |
| 1516 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); |
| 1517 | return rc; |
| 1518 | } |
| 1519 | |
| 1520 | /* |
| 1521 | ** Obtain the list of formattable capacities. |
| 1522 | ** Very similar to idefloppy_get_capacity, except that we push the capacity |
| 1523 | ** descriptors to userland, instead of our own structures. |
| 1524 | ** |
| 1525 | ** Userland gives us the following structure: |
| 1526 | ** |
| 1527 | ** struct idefloppy_format_capacities { |
| 1528 | ** int nformats; |
| 1529 | ** struct { |
| 1530 | ** int nblocks; |
| 1531 | ** int blocksize; |
| 1532 | ** } formats[]; |
| 1533 | ** } ; |
| 1534 | ** |
| 1535 | ** userland initializes nformats to the number of allocated formats[] |
| 1536 | ** records. On exit we set nformats to the number of records we've |
| 1537 | ** actually initialized. |
| 1538 | ** |
| 1539 | */ |
| 1540 | |
| 1541 | static int idefloppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
| 1542 | { |
| 1543 | idefloppy_pc_t pc; |
| 1544 | idefloppy_capacity_header_t *header; |
| 1545 | idefloppy_capacity_descriptor_t *descriptor; |
| 1546 | int i, descriptors, blocks, length; |
| 1547 | int u_array_size; |
| 1548 | int u_index; |
| 1549 | int __user *argp; |
| 1550 | |
| 1551 | if (get_user(u_array_size, arg)) |
| 1552 | return (-EFAULT); |
| 1553 | |
| 1554 | if (u_array_size <= 0) |
| 1555 | return (-EINVAL); |
| 1556 | |
| 1557 | idefloppy_create_read_capacity_cmd(&pc); |
| 1558 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1559 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); |
| 1560 | return (-EIO); |
| 1561 | } |
| 1562 | header = (idefloppy_capacity_header_t *) pc.buffer; |
| 1563 | descriptors = header->length / |
| 1564 | sizeof(idefloppy_capacity_descriptor_t); |
| 1565 | descriptor = (idefloppy_capacity_descriptor_t *) (header + 1); |
| 1566 | |
| 1567 | u_index = 0; |
| 1568 | argp = arg + 1; |
| 1569 | |
| 1570 | /* |
| 1571 | ** We always skip the first capacity descriptor. That's the |
| 1572 | ** current capacity. We are interested in the remaining descriptors, |
| 1573 | ** the formattable capacities. |
| 1574 | */ |
| 1575 | |
| 1576 | for (i=0; i<descriptors; i++, descriptor++) { |
| 1577 | if (u_index >= u_array_size) |
| 1578 | break; /* User-supplied buffer too small */ |
| 1579 | if (i == 0) |
| 1580 | continue; /* Skip the first descriptor */ |
| 1581 | |
| 1582 | blocks = ntohl(descriptor->blocks); |
| 1583 | length = ntohs(descriptor->length); |
| 1584 | |
| 1585 | if (put_user(blocks, argp)) |
| 1586 | return(-EFAULT); |
| 1587 | ++argp; |
| 1588 | |
| 1589 | if (put_user(length, argp)) |
| 1590 | return (-EFAULT); |
| 1591 | ++argp; |
| 1592 | |
| 1593 | ++u_index; |
| 1594 | } |
| 1595 | |
| 1596 | if (put_user(u_index, arg)) |
| 1597 | return (-EFAULT); |
| 1598 | return (0); |
| 1599 | } |
| 1600 | |
| 1601 | /* |
| 1602 | ** Send ATAPI_FORMAT_UNIT to the drive. |
| 1603 | ** |
| 1604 | ** Userland gives us the following structure: |
| 1605 | ** |
| 1606 | ** struct idefloppy_format_command { |
| 1607 | ** int nblocks; |
| 1608 | ** int blocksize; |
| 1609 | ** int flags; |
| 1610 | ** } ; |
| 1611 | ** |
| 1612 | ** flags is a bitmask, currently, the only defined flag is: |
| 1613 | ** |
| 1614 | ** 0x01 - verify media after format. |
| 1615 | */ |
| 1616 | |
| 1617 | static int idefloppy_begin_format(ide_drive_t *drive, int __user *arg) |
| 1618 | { |
| 1619 | int blocks; |
| 1620 | int length; |
| 1621 | int flags; |
| 1622 | idefloppy_pc_t pc; |
| 1623 | |
| 1624 | if (get_user(blocks, arg) || |
| 1625 | get_user(length, arg+1) || |
| 1626 | get_user(flags, arg+2)) { |
| 1627 | return (-EFAULT); |
| 1628 | } |
| 1629 | |
| 1630 | /* Get the SFRP bit */ |
| 1631 | (void) idefloppy_get_capability_page(drive); |
| 1632 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); |
| 1633 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1634 | return (-EIO); |
| 1635 | } |
| 1636 | |
| 1637 | return (0); |
| 1638 | } |
| 1639 | |
| 1640 | /* |
| 1641 | ** Get ATAPI_FORMAT_UNIT progress indication. |
| 1642 | ** |
| 1643 | ** Userland gives a pointer to an int. The int is set to a progresss |
| 1644 | ** indicator 0-65536, with 65536=100%. |
| 1645 | ** |
| 1646 | ** If the drive does not support format progress indication, we just check |
| 1647 | ** the dsc bit, and return either 0 or 65536. |
| 1648 | */ |
| 1649 | |
| 1650 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) |
| 1651 | { |
| 1652 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1653 | idefloppy_pc_t pc; |
| 1654 | int progress_indication = 0x10000; |
| 1655 | |
| 1656 | if (floppy->srfp) { |
| 1657 | idefloppy_create_request_sense_cmd(&pc); |
| 1658 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1659 | return (-EIO); |
| 1660 | } |
| 1661 | |
| 1662 | if (floppy->sense_key == 2 && |
| 1663 | floppy->asc == 4 && |
| 1664 | floppy->ascq == 4) { |
| 1665 | progress_indication = floppy->progress_indication; |
| 1666 | } |
| 1667 | /* Else assume format_unit has finished, and we're |
| 1668 | ** at 0x10000 */ |
| 1669 | } else { |
| 1670 | atapi_status_t status; |
| 1671 | unsigned long flags; |
| 1672 | |
| 1673 | local_irq_save(flags); |
| 1674 | status.all = HWIF(drive)->INB(IDE_STATUS_REG); |
| 1675 | local_irq_restore(flags); |
| 1676 | |
| 1677 | progress_indication = !status.b.dsc ? 0 : 0x10000; |
| 1678 | } |
| 1679 | if (put_user(progress_indication, arg)) |
| 1680 | return (-EFAULT); |
| 1681 | |
| 1682 | return (0); |
| 1683 | } |
| 1684 | |
| 1685 | /* |
| 1686 | * Return the current floppy capacity. |
| 1687 | */ |
| 1688 | static sector_t idefloppy_capacity (ide_drive_t *drive) |
| 1689 | { |
| 1690 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1691 | unsigned long capacity = floppy->blocks * floppy->bs_factor; |
| 1692 | |
| 1693 | return capacity; |
| 1694 | } |
| 1695 | |
| 1696 | /* |
| 1697 | * idefloppy_identify_device checks if we can support a drive, |
| 1698 | * based on the ATAPI IDENTIFY command results. |
| 1699 | */ |
| 1700 | static int idefloppy_identify_device (ide_drive_t *drive,struct hd_driveid *id) |
| 1701 | { |
| 1702 | struct idefloppy_id_gcw gcw; |
| 1703 | #if IDEFLOPPY_DEBUG_INFO |
| 1704 | u16 mask,i; |
| 1705 | char buffer[80]; |
| 1706 | #endif /* IDEFLOPPY_DEBUG_INFO */ |
| 1707 | |
| 1708 | *((u16 *) &gcw) = id->config; |
| 1709 | |
| 1710 | #ifdef CONFIG_PPC |
| 1711 | /* kludge for Apple PowerBook internal zip */ |
| 1712 | if ((gcw.device_type == 5) && |
| 1713 | !strstr(id->model, "CD-ROM") && |
| 1714 | strstr(id->model, "ZIP")) |
| 1715 | gcw.device_type = 0; |
| 1716 | #endif |
| 1717 | |
| 1718 | #if IDEFLOPPY_DEBUG_INFO |
| 1719 | printk(KERN_INFO "Dumping ATAPI Identify Device floppy parameters\n"); |
| 1720 | switch (gcw.protocol) { |
| 1721 | case 0: case 1: sprintf(buffer, "ATA");break; |
| 1722 | case 2: sprintf(buffer, "ATAPI");break; |
| 1723 | case 3: sprintf(buffer, "Reserved (Unknown to ide-floppy)");break; |
| 1724 | } |
| 1725 | printk(KERN_INFO "Protocol Type: %s\n", buffer); |
| 1726 | switch (gcw.device_type) { |
| 1727 | case 0: sprintf(buffer, "Direct-access Device");break; |
| 1728 | case 1: sprintf(buffer, "Streaming Tape Device");break; |
| 1729 | case 2: case 3: case 4: sprintf (buffer, "Reserved");break; |
| 1730 | case 5: sprintf(buffer, "CD-ROM Device");break; |
| 1731 | case 6: sprintf(buffer, "Reserved"); |
| 1732 | case 7: sprintf(buffer, "Optical memory Device");break; |
| 1733 | case 0x1f: sprintf(buffer, "Unknown or no Device type");break; |
| 1734 | default: sprintf(buffer, "Reserved"); |
| 1735 | } |
| 1736 | printk(KERN_INFO "Device Type: %x - %s\n", gcw.device_type, buffer); |
| 1737 | printk(KERN_INFO "Removable: %s\n",gcw.removable ? "Yes":"No"); |
| 1738 | switch (gcw.drq_type) { |
| 1739 | case 0: sprintf(buffer, "Microprocessor DRQ");break; |
| 1740 | case 1: sprintf(buffer, "Interrupt DRQ");break; |
| 1741 | case 2: sprintf(buffer, "Accelerated DRQ");break; |
| 1742 | case 3: sprintf(buffer, "Reserved");break; |
| 1743 | } |
| 1744 | printk(KERN_INFO "Command Packet DRQ Type: %s\n", buffer); |
| 1745 | switch (gcw.packet_size) { |
| 1746 | case 0: sprintf(buffer, "12 bytes");break; |
| 1747 | case 1: sprintf(buffer, "16 bytes");break; |
| 1748 | default: sprintf(buffer, "Reserved");break; |
| 1749 | } |
| 1750 | printk(KERN_INFO "Command Packet Size: %s\n", buffer); |
| 1751 | printk(KERN_INFO "Model: %.40s\n",id->model); |
| 1752 | printk(KERN_INFO "Firmware Revision: %.8s\n",id->fw_rev); |
| 1753 | printk(KERN_INFO "Serial Number: %.20s\n",id->serial_no); |
| 1754 | printk(KERN_INFO "Write buffer size(?): %d bytes\n",id->buf_size*512); |
| 1755 | printk(KERN_INFO "DMA: %s",id->capability & 0x01 ? "Yes\n":"No\n"); |
| 1756 | printk(KERN_INFO "LBA: %s",id->capability & 0x02 ? "Yes\n":"No\n"); |
| 1757 | printk(KERN_INFO "IORDY can be disabled: %s",id->capability & 0x04 ? "Yes\n":"No\n"); |
| 1758 | printk(KERN_INFO "IORDY supported: %s",id->capability & 0x08 ? "Yes\n":"Unknown\n"); |
| 1759 | printk(KERN_INFO "ATAPI overlap supported: %s",id->capability & 0x20 ? "Yes\n":"No\n"); |
| 1760 | printk(KERN_INFO "PIO Cycle Timing Category: %d\n",id->tPIO); |
| 1761 | printk(KERN_INFO "DMA Cycle Timing Category: %d\n",id->tDMA); |
| 1762 | printk(KERN_INFO "Single Word DMA supported modes:\n"); |
| 1763 | for (i=0,mask=1;i<8;i++,mask=mask << 1) { |
| 1764 | if (id->dma_1word & mask) |
| 1765 | printk(KERN_INFO " Mode %d%s\n", i, |
| 1766 | (id->dma_1word & (mask << 8)) ? " (active)" : ""); |
| 1767 | } |
| 1768 | printk(KERN_INFO "Multi Word DMA supported modes:\n"); |
| 1769 | for (i=0,mask=1;i<8;i++,mask=mask << 1) { |
| 1770 | if (id->dma_mword & mask) |
| 1771 | printk(KERN_INFO " Mode %d%s\n", i, |
| 1772 | (id->dma_mword & (mask << 8)) ? " (active)" : ""); |
| 1773 | } |
| 1774 | if (id->field_valid & 0x0002) { |
| 1775 | printk(KERN_INFO "Enhanced PIO Modes: %s\n", |
| 1776 | id->eide_pio_modes & 1 ? "Mode 3":"None"); |
| 1777 | if (id->eide_dma_min == 0) |
| 1778 | sprintf(buffer, "Not supported"); |
| 1779 | else |
| 1780 | sprintf(buffer, "%d ns",id->eide_dma_min); |
| 1781 | printk(KERN_INFO "Minimum Multi-word DMA cycle per word: %s\n", buffer); |
| 1782 | if (id->eide_dma_time == 0) |
| 1783 | sprintf(buffer, "Not supported"); |
| 1784 | else |
| 1785 | sprintf(buffer, "%d ns",id->eide_dma_time); |
| 1786 | printk(KERN_INFO "Manufacturer\'s Recommended Multi-word cycle: %s\n", buffer); |
| 1787 | if (id->eide_pio == 0) |
| 1788 | sprintf(buffer, "Not supported"); |
| 1789 | else |
| 1790 | sprintf(buffer, "%d ns",id->eide_pio); |
| 1791 | printk(KERN_INFO "Minimum PIO cycle without IORDY: %s\n", |
| 1792 | buffer); |
| 1793 | if (id->eide_pio_iordy == 0) |
| 1794 | sprintf(buffer, "Not supported"); |
| 1795 | else |
| 1796 | sprintf(buffer, "%d ns",id->eide_pio_iordy); |
| 1797 | printk(KERN_INFO "Minimum PIO cycle with IORDY: %s\n", buffer); |
| 1798 | } else |
| 1799 | printk(KERN_INFO "According to the device, fields 64-70 are not valid.\n"); |
| 1800 | #endif /* IDEFLOPPY_DEBUG_INFO */ |
| 1801 | |
| 1802 | if (gcw.protocol != 2) |
| 1803 | printk(KERN_ERR "ide-floppy: Protocol is not ATAPI\n"); |
| 1804 | else if (gcw.device_type != 0) |
| 1805 | printk(KERN_ERR "ide-floppy: Device type is not set to floppy\n"); |
| 1806 | else if (!gcw.removable) |
| 1807 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); |
| 1808 | else if (gcw.drq_type == 3) { |
| 1809 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type %d not supported\n", gcw.drq_type); |
| 1810 | } else if (gcw.packet_size != 0) { |
| 1811 | printk(KERN_ERR "ide-floppy: Packet size is not 12 bytes long\n"); |
| 1812 | } else |
| 1813 | return 1; |
| 1814 | return 0; |
| 1815 | } |
| 1816 | |
| 1817 | static void idefloppy_add_settings(ide_drive_t *drive) |
| 1818 | { |
| 1819 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1820 | |
| 1821 | /* |
| 1822 | * drive setting name read/write ioctl ioctl data type min max mul_factor div_factor data pointer set function |
| 1823 | */ |
| 1824 | ide_add_setting(drive, "bios_cyl", SETTING_RW, -1, -1, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL); |
| 1825 | ide_add_setting(drive, "bios_head", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); |
| 1826 | ide_add_setting(drive, "bios_sect", SETTING_RW, -1, -1, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); |
| 1827 | ide_add_setting(drive, "ticks", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL); |
| 1828 | } |
| 1829 | |
| 1830 | /* |
| 1831 | * Driver initialization. |
| 1832 | */ |
| 1833 | static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy) |
| 1834 | { |
| 1835 | struct idefloppy_id_gcw gcw; |
| 1836 | |
| 1837 | *((u16 *) &gcw) = drive->id->config; |
| 1838 | floppy->pc = floppy->pc_stack; |
| 1839 | if (gcw.drq_type == 1) |
| 1840 | set_bit(IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags); |
| 1841 | /* |
| 1842 | * We used to check revisions here. At this point however |
| 1843 | * I'm giving up. Just assume they are all broken, its easier. |
| 1844 | * |
| 1845 | * The actual reason for the workarounds was likely |
| 1846 | * a driver bug after all rather than a firmware bug, |
| 1847 | * and the workaround below used to hide it. It should |
| 1848 | * be fixed as of version 1.9, but to be on the safe side |
| 1849 | * we'll leave the limitation below for the 2.2.x tree. |
| 1850 | */ |
| 1851 | |
| 1852 | if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { |
| 1853 | set_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags); |
| 1854 | /* This value will be visible in the /proc/ide/hdx/settings */ |
| 1855 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; |
| 1856 | blk_queue_max_sectors(drive->queue, 64); |
| 1857 | } |
| 1858 | |
| 1859 | /* |
| 1860 | * Guess what? The IOMEGA Clik! drive also needs the |
| 1861 | * above fix. It makes nasty clicking noises without |
| 1862 | * it, so please don't remove this. |
| 1863 | */ |
| 1864 | if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { |
| 1865 | blk_queue_max_sectors(drive->queue, 64); |
| 1866 | set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags); |
| 1867 | } |
| 1868 | |
| 1869 | |
| 1870 | (void) idefloppy_get_capacity(drive); |
| 1871 | idefloppy_add_settings(drive); |
| 1872 | } |
| 1873 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1874 | static int ide_floppy_remove(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1876 | ide_drive_t *drive = to_ide_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 1878 | struct gendisk *g = floppy->disk; |
| 1879 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1880 | ide_unregister_subdriver(drive, floppy->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | |
| 1882 | del_gendisk(g); |
| 1883 | |
| 1884 | ide_floppy_put(floppy); |
| 1885 | |
| 1886 | return 0; |
| 1887 | } |
| 1888 | |
| 1889 | static void ide_floppy_release(struct kref *kref) |
| 1890 | { |
| 1891 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); |
| 1892 | ide_drive_t *drive = floppy->drive; |
| 1893 | struct gendisk *g = floppy->disk; |
| 1894 | |
| 1895 | drive->driver_data = NULL; |
| 1896 | g->private_data = NULL; |
| 1897 | put_disk(g); |
| 1898 | kfree(floppy); |
| 1899 | } |
| 1900 | |
| 1901 | #ifdef CONFIG_PROC_FS |
| 1902 | |
| 1903 | static int proc_idefloppy_read_capacity |
| 1904 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 1905 | { |
| 1906 | ide_drive_t*drive = (ide_drive_t *)data; |
| 1907 | int len; |
| 1908 | |
| 1909 | len = sprintf(page,"%llu\n", (long long)idefloppy_capacity(drive)); |
| 1910 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 1911 | } |
| 1912 | |
| 1913 | static ide_proc_entry_t idefloppy_proc[] = { |
| 1914 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
| 1915 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, |
| 1916 | { NULL, 0, NULL, NULL } |
| 1917 | }; |
| 1918 | |
| 1919 | #else |
| 1920 | |
| 1921 | #define idefloppy_proc NULL |
| 1922 | |
| 1923 | #endif /* CONFIG_PROC_FS */ |
| 1924 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1925 | static int ide_floppy_probe(struct device *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1926 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1927 | static ide_driver_t idefloppy_driver = { |
| 1928 | .owner = THIS_MODULE, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1929 | .gen_driver = { |
| 1930 | .name = "ide-floppy", |
| 1931 | .bus = &ide_bus_type, |
| 1932 | .probe = ide_floppy_probe, |
| 1933 | .remove = ide_floppy_remove, |
| 1934 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1935 | .version = IDEFLOPPY_VERSION, |
| 1936 | .media = ide_floppy, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | .supports_dsc_overlap = 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1938 | .do_request = idefloppy_do_request, |
| 1939 | .end_request = idefloppy_do_end_request, |
| 1940 | .error = __ide_error, |
| 1941 | .abort = __ide_abort, |
| 1942 | .proc = idefloppy_proc, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | }; |
| 1944 | |
| 1945 | static int idefloppy_open(struct inode *inode, struct file *filp) |
| 1946 | { |
| 1947 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 1948 | struct ide_floppy_obj *floppy; |
| 1949 | ide_drive_t *drive; |
| 1950 | idefloppy_pc_t pc; |
| 1951 | int ret = 0; |
| 1952 | |
| 1953 | debug_log(KERN_INFO "Reached idefloppy_open\n"); |
| 1954 | |
| 1955 | if (!(floppy = ide_floppy_get(disk))) |
| 1956 | return -ENXIO; |
| 1957 | |
| 1958 | drive = floppy->drive; |
| 1959 | |
| 1960 | drive->usage++; |
| 1961 | |
| 1962 | if (drive->usage == 1) { |
| 1963 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
| 1964 | /* Just in case */ |
| 1965 | |
| 1966 | idefloppy_create_test_unit_ready_cmd(&pc); |
| 1967 | if (idefloppy_queue_pc_tail(drive, &pc)) { |
| 1968 | idefloppy_create_start_stop_cmd(&pc, 1); |
| 1969 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 1970 | } |
| 1971 | |
| 1972 | if (idefloppy_get_capacity (drive) |
| 1973 | && (filp->f_flags & O_NDELAY) == 0 |
| 1974 | /* |
| 1975 | ** Allow O_NDELAY to open a drive without a disk, or with |
| 1976 | ** an unreadable disk, so that we can get the format |
| 1977 | ** capacity of the drive or begin the format - Sam |
| 1978 | */ |
| 1979 | ) { |
| 1980 | drive->usage--; |
| 1981 | ret = -EIO; |
| 1982 | goto out_put_floppy; |
| 1983 | } |
| 1984 | |
| 1985 | if (floppy->wp && (filp->f_mode & 2)) { |
| 1986 | drive->usage--; |
| 1987 | ret = -EROFS; |
| 1988 | goto out_put_floppy; |
| 1989 | } |
| 1990 | set_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); |
| 1991 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
| 1992 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { |
| 1993 | idefloppy_create_prevent_cmd(&pc, 1); |
| 1994 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 1995 | } |
| 1996 | check_disk_change(inode->i_bdev); |
| 1997 | } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) { |
| 1998 | drive->usage--; |
| 1999 | ret = -EBUSY; |
| 2000 | goto out_put_floppy; |
| 2001 | } |
| 2002 | return 0; |
| 2003 | |
| 2004 | out_put_floppy: |
| 2005 | ide_floppy_put(floppy); |
| 2006 | return ret; |
| 2007 | } |
| 2008 | |
| 2009 | static int idefloppy_release(struct inode *inode, struct file *filp) |
| 2010 | { |
| 2011 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 2012 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); |
| 2013 | ide_drive_t *drive = floppy->drive; |
| 2014 | idefloppy_pc_t pc; |
| 2015 | |
| 2016 | debug_log(KERN_INFO "Reached idefloppy_release\n"); |
| 2017 | |
| 2018 | if (drive->usage == 1) { |
| 2019 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
| 2020 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { |
| 2021 | idefloppy_create_prevent_cmd(&pc, 0); |
| 2022 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 2023 | } |
| 2024 | |
| 2025 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
| 2026 | } |
| 2027 | drive->usage--; |
| 2028 | |
| 2029 | ide_floppy_put(floppy); |
| 2030 | |
| 2031 | return 0; |
| 2032 | } |
| 2033 | |
| 2034 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
| 2035 | unsigned int cmd, unsigned long arg) |
| 2036 | { |
| 2037 | struct block_device *bdev = inode->i_bdev; |
| 2038 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); |
| 2039 | ide_drive_t *drive = floppy->drive; |
| 2040 | void __user *argp = (void __user *)arg; |
| 2041 | int err = generic_ide_ioctl(drive, file, bdev, cmd, arg); |
| 2042 | int prevent = (arg) ? 1 : 0; |
| 2043 | idefloppy_pc_t pc; |
| 2044 | if (err != -EINVAL) |
| 2045 | return err; |
| 2046 | |
| 2047 | switch (cmd) { |
| 2048 | case CDROMEJECT: |
| 2049 | prevent = 0; |
| 2050 | /* fall through */ |
| 2051 | case CDROM_LOCKDOOR: |
| 2052 | if (drive->usage > 1) |
| 2053 | return -EBUSY; |
| 2054 | |
| 2055 | /* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */ |
| 2056 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { |
| 2057 | idefloppy_create_prevent_cmd(&pc, prevent); |
| 2058 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 2059 | } |
| 2060 | if (cmd == CDROMEJECT) { |
| 2061 | idefloppy_create_start_stop_cmd(&pc, 2); |
| 2062 | (void) idefloppy_queue_pc_tail(drive, &pc); |
| 2063 | } |
| 2064 | return 0; |
| 2065 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: |
| 2066 | return 0; |
| 2067 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: |
| 2068 | return idefloppy_get_format_capacities(drive, argp); |
| 2069 | case IDEFLOPPY_IOCTL_FORMAT_START: |
| 2070 | |
| 2071 | if (!(file->f_mode & 2)) |
| 2072 | return -EPERM; |
| 2073 | |
| 2074 | if (drive->usage > 1) { |
| 2075 | /* Don't format if someone is using the disk */ |
| 2076 | |
| 2077 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, |
| 2078 | &floppy->flags); |
| 2079 | return -EBUSY; |
| 2080 | } |
| 2081 | |
| 2082 | set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
| 2083 | |
| 2084 | err = idefloppy_begin_format(drive, argp); |
| 2085 | if (err) |
| 2086 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
| 2087 | return err; |
| 2088 | /* |
| 2089 | ** Note, the bit will be cleared when the device is |
| 2090 | ** closed. This is the cleanest way to handle the |
| 2091 | ** situation where the drive does not support |
| 2092 | ** format progress reporting. |
| 2093 | */ |
| 2094 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: |
| 2095 | return idefloppy_get_format_progress(drive, argp); |
| 2096 | } |
| 2097 | return -EINVAL; |
| 2098 | } |
| 2099 | |
| 2100 | static int idefloppy_media_changed(struct gendisk *disk) |
| 2101 | { |
| 2102 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); |
| 2103 | ide_drive_t *drive = floppy->drive; |
| 2104 | |
| 2105 | /* do not scan partitions twice if this is a removable device */ |
| 2106 | if (drive->attach) { |
| 2107 | drive->attach = 0; |
| 2108 | return 0; |
| 2109 | } |
| 2110 | return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); |
| 2111 | } |
| 2112 | |
| 2113 | static int idefloppy_revalidate_disk(struct gendisk *disk) |
| 2114 | { |
| 2115 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); |
| 2116 | set_capacity(disk, idefloppy_capacity(floppy->drive)); |
| 2117 | return 0; |
| 2118 | } |
| 2119 | |
| 2120 | static struct block_device_operations idefloppy_ops = { |
| 2121 | .owner = THIS_MODULE, |
| 2122 | .open = idefloppy_open, |
| 2123 | .release = idefloppy_release, |
| 2124 | .ioctl = idefloppy_ioctl, |
| 2125 | .media_changed = idefloppy_media_changed, |
| 2126 | .revalidate_disk= idefloppy_revalidate_disk |
| 2127 | }; |
| 2128 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2129 | static int ide_floppy_probe(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2131 | ide_drive_t *drive = to_ide_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | idefloppy_floppy_t *floppy; |
| 2133 | struct gendisk *g; |
| 2134 | |
| 2135 | if (!strstr("ide-floppy", drive->driver_req)) |
| 2136 | goto failed; |
| 2137 | if (!drive->present) |
| 2138 | goto failed; |
| 2139 | if (drive->media != ide_floppy) |
| 2140 | goto failed; |
| 2141 | if (!idefloppy_identify_device (drive, drive->id)) { |
| 2142 | printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name); |
| 2143 | goto failed; |
| 2144 | } |
| 2145 | if (drive->scsi) { |
| 2146 | printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name); |
| 2147 | goto failed; |
| 2148 | } |
| 2149 | if ((floppy = (idefloppy_floppy_t *) kmalloc (sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) { |
| 2150 | printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name); |
| 2151 | goto failed; |
| 2152 | } |
| 2153 | |
| 2154 | g = alloc_disk(1 << PARTN_BITS); |
| 2155 | if (!g) |
| 2156 | goto out_free_floppy; |
| 2157 | |
| 2158 | ide_init_disk(g, drive); |
| 2159 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2160 | ide_register_subdriver(drive, &idefloppy_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | |
| 2162 | memset(floppy, 0, sizeof(*floppy)); |
| 2163 | |
| 2164 | kref_init(&floppy->kref); |
| 2165 | |
| 2166 | floppy->drive = drive; |
| 2167 | floppy->driver = &idefloppy_driver; |
| 2168 | floppy->disk = g; |
| 2169 | |
| 2170 | g->private_data = &floppy->driver; |
| 2171 | |
| 2172 | drive->driver_data = floppy; |
| 2173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | idefloppy_setup (drive, floppy); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | g->minors = 1 << PARTN_BITS; |
| 2177 | g->driverfs_dev = &drive->gendev; |
| 2178 | strcpy(g->devfs_name, drive->devfs_name); |
| 2179 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
| 2180 | g->fops = &idefloppy_ops; |
| 2181 | drive->attach = 1; |
| 2182 | add_disk(g); |
| 2183 | return 0; |
| 2184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2185 | out_free_floppy: |
| 2186 | kfree(floppy); |
| 2187 | failed: |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2188 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | } |
| 2190 | |
| 2191 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
| 2192 | |
| 2193 | static void __exit idefloppy_exit (void) |
| 2194 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2195 | driver_unregister(&idefloppy_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2196 | } |
| 2197 | |
| 2198 | /* |
| 2199 | * idefloppy_init will register the driver for each floppy. |
| 2200 | */ |
| 2201 | static int idefloppy_init (void) |
| 2202 | { |
| 2203 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2204 | return driver_register(&idefloppy_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2205 | } |
| 2206 | |
| 2207 | module_init(idefloppy_init); |
| 2208 | module_exit(idefloppy_exit); |
| 2209 | MODULE_LICENSE("GPL"); |