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1da177e4 LT |
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 | ||
1da177e4 LT |
85 | #include <linux/module.h> |
86 | #include <linux/types.h> | |
87 | #include <linux/string.h> | |
88 | #include <linux/kernel.h> | |
89 | #include <linux/delay.h> | |
90 | #include <linux/timer.h> | |
91 | #include <linux/mm.h> | |
92 | #include <linux/interrupt.h> | |
93 | #include <linux/major.h> | |
94 | #include <linux/errno.h> | |
95 | #include <linux/genhd.h> | |
96 | #include <linux/slab.h> | |
97 | #include <linux/cdrom.h> | |
98 | #include <linux/ide.h> | |
99 | #include <linux/bitops.h> | |
cf8b8975 | 100 | #include <linux/mutex.h> |
1da177e4 | 101 | |
89636af2 BZ |
102 | #include <scsi/scsi_ioctl.h> |
103 | ||
1da177e4 LT |
104 | #include <asm/byteorder.h> |
105 | #include <asm/irq.h> | |
106 | #include <asm/uaccess.h> | |
107 | #include <asm/io.h> | |
108 | #include <asm/unaligned.h> | |
109 | ||
110 | /* | |
111 | * The following are used to debug the driver. | |
112 | */ | |
113 | #define IDEFLOPPY_DEBUG_LOG 0 | |
114 | #define IDEFLOPPY_DEBUG_INFO 0 | |
115 | #define IDEFLOPPY_DEBUG_BUGS 1 | |
116 | ||
117 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ | |
118 | #define IDEFLOPPY_DEBUG( fmt, args... ) | |
119 | ||
120 | #if IDEFLOPPY_DEBUG_LOG | |
121 | #define debug_log printk | |
122 | #else | |
123 | #define debug_log(fmt, args... ) do {} while(0) | |
124 | #endif | |
125 | ||
126 | ||
127 | /* | |
128 | * Some drives require a longer irq timeout. | |
129 | */ | |
130 | #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) | |
131 | ||
132 | /* | |
133 | * After each failed packet command we issue a request sense command | |
134 | * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
135 | */ | |
136 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
137 | ||
138 | /* | |
139 | * With each packet command, we allocate a buffer of | |
140 | * IDEFLOPPY_PC_BUFFER_SIZE bytes. | |
141 | */ | |
142 | #define IDEFLOPPY_PC_BUFFER_SIZE 256 | |
143 | ||
144 | /* | |
145 | * In various places in the driver, we need to allocate storage | |
146 | * for packet commands and requests, which will remain valid while | |
147 | * we leave the driver to wait for an interrupt or a timeout event. | |
148 | */ | |
149 | #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES) | |
150 | ||
151 | /* | |
152 | * Our view of a packet command. | |
153 | */ | |
154 | typedef struct idefloppy_packet_command_s { | |
155 | u8 c[12]; /* Actual packet bytes */ | |
156 | int retries; /* On each retry, we increment retries */ | |
157 | int error; /* Error code */ | |
158 | int request_transfer; /* Bytes to transfer */ | |
159 | int actually_transferred; /* Bytes actually transferred */ | |
160 | int buffer_size; /* Size of our data buffer */ | |
161 | int b_count; /* Missing/Available data on the current buffer */ | |
162 | struct request *rq; /* The corresponding request */ | |
163 | u8 *buffer; /* Data buffer */ | |
164 | u8 *current_position; /* Pointer into the above buffer */ | |
165 | void (*callback) (ide_drive_t *); /* Called when this packet command is completed */ | |
166 | u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */ | |
167 | unsigned long flags; /* Status/Action bit flags: long for set_bit */ | |
168 | } idefloppy_pc_t; | |
169 | ||
170 | /* | |
171 | * Packet command flag bits. | |
172 | */ | |
173 | #define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */ | |
174 | #define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */ | |
175 | #define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */ | |
176 | #define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */ | |
177 | #define PC_WRITING 5 /* Data direction */ | |
178 | ||
179 | #define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */ | |
180 | ||
181 | /* | |
182 | * Removable Block Access Capabilities Page | |
183 | */ | |
184 | typedef struct { | |
185 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
186 | unsigned page_code :6; /* Page code - Should be 0x1b */ | |
187 | unsigned reserved1_6 :1; /* Reserved */ | |
188 | unsigned ps :1; /* Should be 0 */ | |
189 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
190 | unsigned ps :1; /* Should be 0 */ | |
191 | unsigned reserved1_6 :1; /* Reserved */ | |
192 | unsigned page_code :6; /* Page code - Should be 0x1b */ | |
193 | #else | |
194 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
195 | #endif | |
196 | u8 page_length; /* Page Length - Should be 0xa */ | |
197 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
198 | unsigned reserved2 :6; | |
199 | unsigned srfp :1; /* Supports reporting progress of format */ | |
200 | unsigned sflp :1; /* System floppy type device */ | |
201 | unsigned tlun :3; /* Total logical units supported by the device */ | |
202 | unsigned reserved3 :3; | |
203 | unsigned sml :1; /* Single / Multiple lun supported */ | |
204 | unsigned ncd :1; /* Non cd optical device */ | |
205 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
206 | unsigned sflp :1; /* System floppy type device */ | |
207 | unsigned srfp :1; /* Supports reporting progress of format */ | |
208 | unsigned reserved2 :6; | |
209 | unsigned ncd :1; /* Non cd optical device */ | |
210 | unsigned sml :1; /* Single / Multiple lun supported */ | |
211 | unsigned reserved3 :3; | |
212 | unsigned tlun :3; /* Total logical units supported by the device */ | |
213 | #else | |
214 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
215 | #endif | |
216 | u8 reserved[8]; | |
217 | } idefloppy_capabilities_page_t; | |
218 | ||
219 | /* | |
220 | * Flexible disk page. | |
221 | */ | |
222 | typedef struct { | |
223 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
224 | unsigned page_code :6; /* Page code - Should be 0x5 */ | |
225 | unsigned reserved1_6 :1; /* Reserved */ | |
226 | unsigned ps :1; /* The device is capable of saving the page */ | |
227 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
228 | unsigned ps :1; /* The device is capable of saving the page */ | |
229 | unsigned reserved1_6 :1; /* Reserved */ | |
230 | unsigned page_code :6; /* Page code - Should be 0x5 */ | |
231 | #else | |
232 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
233 | #endif | |
234 | u8 page_length; /* Page Length - Should be 0x1e */ | |
235 | u16 transfer_rate; /* In kilobits per second */ | |
236 | u8 heads, sectors; /* Number of heads, Number of sectors per track */ | |
237 | u16 sector_size; /* Byes per sector */ | |
238 | u16 cyls; /* Number of cylinders */ | |
239 | u8 reserved10[10]; | |
240 | u8 motor_delay; /* Motor off delay */ | |
241 | u8 reserved21[7]; | |
242 | u16 rpm; /* Rotations per minute */ | |
243 | u8 reserved30[2]; | |
244 | } idefloppy_flexible_disk_page_t; | |
245 | ||
246 | /* | |
247 | * Format capacity | |
248 | */ | |
249 | typedef struct { | |
250 | u8 reserved[3]; | |
251 | u8 length; /* Length of the following descriptors in bytes */ | |
252 | } idefloppy_capacity_header_t; | |
253 | ||
254 | typedef struct { | |
255 | u32 blocks; /* Number of blocks */ | |
256 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
257 | unsigned dc :2; /* Descriptor Code */ | |
258 | unsigned reserved :6; | |
259 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
260 | unsigned reserved :6; | |
261 | unsigned dc :2; /* Descriptor Code */ | |
262 | #else | |
263 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
264 | #endif | |
265 | u8 length_msb; /* Block Length (MSB)*/ | |
266 | u16 length; /* Block Length */ | |
267 | } idefloppy_capacity_descriptor_t; | |
268 | ||
269 | #define CAPACITY_INVALID 0x00 | |
270 | #define CAPACITY_UNFORMATTED 0x01 | |
271 | #define CAPACITY_CURRENT 0x02 | |
272 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
273 | ||
274 | /* | |
275 | * Most of our global data which we need to save even as we leave the | |
276 | * driver due to an interrupt or a timer event is stored in a variable | |
277 | * of type idefloppy_floppy_t, defined below. | |
278 | */ | |
279 | typedef struct ide_floppy_obj { | |
280 | ide_drive_t *drive; | |
281 | ide_driver_t *driver; | |
282 | struct gendisk *disk; | |
283 | struct kref kref; | |
c94964a4 | 284 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
285 | |
286 | /* Current packet command */ | |
287 | idefloppy_pc_t *pc; | |
288 | /* Last failed packet command */ | |
289 | idefloppy_pc_t *failed_pc; | |
290 | /* Packet command stack */ | |
291 | idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK]; | |
292 | /* Next free packet command storage space */ | |
293 | int pc_stack_index; | |
294 | struct request rq_stack[IDEFLOPPY_PC_STACK]; | |
295 | /* We implement a circular array */ | |
296 | int rq_stack_index; | |
297 | ||
298 | /* | |
299 | * Last error information | |
300 | */ | |
301 | u8 sense_key, asc, ascq; | |
302 | /* delay this long before sending packet command */ | |
303 | u8 ticks; | |
304 | int progress_indication; | |
305 | ||
306 | /* | |
307 | * Device information | |
308 | */ | |
309 | /* Current format */ | |
310 | int blocks, block_size, bs_factor; | |
311 | /* Last format capacity */ | |
312 | idefloppy_capacity_descriptor_t capacity; | |
313 | /* Copy of the flexible disk page */ | |
314 | idefloppy_flexible_disk_page_t flexible_disk_page; | |
315 | /* Write protect */ | |
316 | int wp; | |
317 | /* Supports format progress report */ | |
318 | int srfp; | |
319 | /* Status/Action flags */ | |
320 | unsigned long flags; | |
321 | } idefloppy_floppy_t; | |
322 | ||
c40d3d38 | 323 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 LT |
324 | |
325 | /* | |
326 | * Floppy flag bits values. | |
327 | */ | |
328 | #define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */ | |
329 | #define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */ | |
330 | #define IDEFLOPPY_USE_READ12 2 /* Use READ12/WRITE12 or READ10/WRITE10 */ | |
331 | #define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */ | |
332 | #define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */ | |
333 | #define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */ | |
334 | ||
335 | /* | |
336 | * ATAPI floppy drive packet commands | |
337 | */ | |
338 | #define IDEFLOPPY_FORMAT_UNIT_CMD 0x04 | |
339 | #define IDEFLOPPY_INQUIRY_CMD 0x12 | |
340 | #define IDEFLOPPY_MODE_SELECT_CMD 0x55 | |
341 | #define IDEFLOPPY_MODE_SENSE_CMD 0x5a | |
342 | #define IDEFLOPPY_READ10_CMD 0x28 | |
343 | #define IDEFLOPPY_READ12_CMD 0xa8 | |
344 | #define IDEFLOPPY_READ_CAPACITY_CMD 0x23 | |
345 | #define IDEFLOPPY_REQUEST_SENSE_CMD 0x03 | |
346 | #define IDEFLOPPY_PREVENT_REMOVAL_CMD 0x1e | |
347 | #define IDEFLOPPY_SEEK_CMD 0x2b | |
348 | #define IDEFLOPPY_START_STOP_CMD 0x1b | |
349 | #define IDEFLOPPY_TEST_UNIT_READY_CMD 0x00 | |
350 | #define IDEFLOPPY_VERIFY_CMD 0x2f | |
351 | #define IDEFLOPPY_WRITE10_CMD 0x2a | |
352 | #define IDEFLOPPY_WRITE12_CMD 0xaa | |
353 | #define IDEFLOPPY_WRITE_VERIFY_CMD 0x2e | |
354 | ||
355 | /* | |
356 | * Defines for the mode sense command | |
357 | */ | |
358 | #define MODE_SENSE_CURRENT 0x00 | |
359 | #define MODE_SENSE_CHANGEABLE 0x01 | |
360 | #define MODE_SENSE_DEFAULT 0x02 | |
361 | #define MODE_SENSE_SAVED 0x03 | |
362 | ||
363 | /* | |
364 | * IOCTLs used in low-level formatting. | |
365 | */ | |
366 | ||
367 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 | |
368 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 | |
369 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 | |
370 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 | |
371 | ||
372 | #if 0 | |
373 | /* | |
374 | * Special requests for our block device strategy routine. | |
375 | */ | |
376 | #define IDEFLOPPY_FIRST_RQ 90 | |
377 | ||
378 | /* | |
379 | * IDEFLOPPY_PC_RQ is used to queue a packet command in the request queue. | |
380 | */ | |
381 | #define IDEFLOPPY_PC_RQ 90 | |
382 | ||
383 | #define IDEFLOPPY_LAST_RQ 90 | |
384 | ||
385 | /* | |
386 | * A macro which can be used to check if a given request command | |
387 | * originated in the driver or in the buffer cache layer. | |
388 | */ | |
389 | #define IDEFLOPPY_RQ_CMD(cmd) ((cmd >= IDEFLOPPY_FIRST_RQ) && (cmd <= IDEFLOPPY_LAST_RQ)) | |
390 | ||
391 | #endif | |
392 | ||
393 | /* | |
394 | * Error codes which are returned in rq->errors to the higher part | |
395 | * of the driver. | |
396 | */ | |
397 | #define IDEFLOPPY_ERROR_GENERAL 101 | |
398 | ||
399 | /* | |
400 | * The following is used to format the general configuration word of | |
401 | * the ATAPI IDENTIFY DEVICE command. | |
402 | */ | |
403 | struct idefloppy_id_gcw { | |
404 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
405 | unsigned packet_size :2; /* Packet Size */ | |
406 | unsigned reserved234 :3; /* Reserved */ | |
407 | unsigned drq_type :2; /* Command packet DRQ type */ | |
408 | unsigned removable :1; /* Removable media */ | |
409 | unsigned device_type :5; /* Device type */ | |
410 | unsigned reserved13 :1; /* Reserved */ | |
411 | unsigned protocol :2; /* Protocol type */ | |
412 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
413 | unsigned protocol :2; /* Protocol type */ | |
414 | unsigned reserved13 :1; /* Reserved */ | |
415 | unsigned device_type :5; /* Device type */ | |
416 | unsigned removable :1; /* Removable media */ | |
417 | unsigned drq_type :2; /* Command packet DRQ type */ | |
418 | unsigned reserved234 :3; /* Reserved */ | |
419 | unsigned packet_size :2; /* Packet Size */ | |
420 | #else | |
421 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
422 | #endif | |
423 | }; | |
424 | ||
425 | /* | |
426 | * INQUIRY packet command - Data Format | |
427 | */ | |
428 | typedef struct { | |
429 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
430 | unsigned device_type :5; /* Peripheral Device Type */ | |
431 | unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */ | |
432 | unsigned reserved1_6t0 :7; /* Reserved */ | |
433 | unsigned rmb :1; /* Removable Medium Bit */ | |
434 | unsigned ansi_version :3; /* ANSI Version */ | |
435 | unsigned ecma_version :3; /* ECMA Version */ | |
436 | unsigned iso_version :2; /* ISO Version */ | |
437 | unsigned response_format :4; /* Response Data Format */ | |
438 | unsigned reserved3_45 :2; /* Reserved */ | |
439 | unsigned reserved3_6 :1; /* TrmIOP - Reserved */ | |
440 | unsigned reserved3_7 :1; /* AENC - Reserved */ | |
441 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
442 | unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */ | |
443 | unsigned device_type :5; /* Peripheral Device Type */ | |
444 | unsigned rmb :1; /* Removable Medium Bit */ | |
445 | unsigned reserved1_6t0 :7; /* Reserved */ | |
446 | unsigned iso_version :2; /* ISO Version */ | |
447 | unsigned ecma_version :3; /* ECMA Version */ | |
448 | unsigned ansi_version :3; /* ANSI Version */ | |
449 | unsigned reserved3_7 :1; /* AENC - Reserved */ | |
450 | unsigned reserved3_6 :1; /* TrmIOP - Reserved */ | |
451 | unsigned reserved3_45 :2; /* Reserved */ | |
452 | unsigned response_format :4; /* Response Data Format */ | |
453 | #else | |
454 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
455 | #endif | |
456 | u8 additional_length; /* Additional Length (total_length-4) */ | |
457 | u8 rsv5, rsv6, rsv7; /* Reserved */ | |
458 | u8 vendor_id[8]; /* Vendor Identification */ | |
459 | u8 product_id[16]; /* Product Identification */ | |
460 | u8 revision_level[4]; /* Revision Level */ | |
461 | u8 vendor_specific[20]; /* Vendor Specific - Optional */ | |
462 | u8 reserved56t95[40]; /* Reserved - Optional */ | |
463 | /* Additional information may be returned */ | |
464 | } idefloppy_inquiry_result_t; | |
465 | ||
466 | /* | |
467 | * REQUEST SENSE packet command result - Data Format. | |
468 | */ | |
469 | typedef struct { | |
470 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
471 | unsigned error_code :7; /* Current error (0x70) */ | |
472 | unsigned valid :1; /* The information field conforms to SFF-8070i */ | |
473 | u8 reserved1 :8; /* Reserved */ | |
474 | unsigned sense_key :4; /* Sense Key */ | |
475 | unsigned reserved2_4 :1; /* Reserved */ | |
476 | unsigned ili :1; /* Incorrect Length Indicator */ | |
477 | unsigned reserved2_67 :2; | |
478 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
479 | unsigned valid :1; /* The information field conforms to SFF-8070i */ | |
480 | unsigned error_code :7; /* Current error (0x70) */ | |
481 | u8 reserved1 :8; /* Reserved */ | |
482 | unsigned reserved2_67 :2; | |
483 | unsigned ili :1; /* Incorrect Length Indicator */ | |
484 | unsigned reserved2_4 :1; /* Reserved */ | |
485 | unsigned sense_key :4; /* Sense Key */ | |
486 | #else | |
487 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
488 | #endif | |
489 | u32 information __attribute__ ((packed)); | |
490 | u8 asl; /* Additional sense length (n-7) */ | |
491 | u32 command_specific; /* Additional command specific information */ | |
492 | u8 asc; /* Additional Sense Code */ | |
493 | u8 ascq; /* Additional Sense Code Qualifier */ | |
494 | u8 replaceable_unit_code; /* Field Replaceable Unit Code */ | |
495 | u8 sksv[3]; | |
496 | u8 pad[2]; /* Padding to 20 bytes */ | |
497 | } idefloppy_request_sense_result_t; | |
498 | ||
499 | /* | |
500 | * Pages of the SELECT SENSE / MODE SENSE packet commands. | |
501 | */ | |
502 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b | |
503 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 | |
504 | ||
505 | /* | |
506 | * Mode Parameter Header for the MODE SENSE packet command | |
507 | */ | |
508 | typedef struct { | |
509 | u16 mode_data_length; /* Length of the following data transfer */ | |
510 | u8 medium_type; /* Medium Type */ | |
511 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
512 | unsigned reserved3 :7; | |
513 | unsigned wp :1; /* Write protect */ | |
514 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
515 | unsigned wp :1; /* Write protect */ | |
516 | unsigned reserved3 :7; | |
517 | #else | |
518 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
519 | #endif | |
520 | u8 reserved[4]; | |
521 | } idefloppy_mode_parameter_header_t; | |
522 | ||
cf8b8975 | 523 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
524 | |
525 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
526 | ||
527 | #define ide_floppy_g(disk) \ | |
528 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
529 | ||
530 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) | |
531 | { | |
532 | struct ide_floppy_obj *floppy = NULL; | |
533 | ||
cf8b8975 | 534 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 LT |
535 | floppy = ide_floppy_g(disk); |
536 | if (floppy) | |
537 | kref_get(&floppy->kref); | |
cf8b8975 | 538 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
539 | return floppy; |
540 | } | |
541 | ||
542 | static void ide_floppy_release(struct kref *); | |
543 | ||
544 | static void ide_floppy_put(struct ide_floppy_obj *floppy) | |
545 | { | |
cf8b8975 | 546 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 | 547 | kref_put(&floppy->kref, ide_floppy_release); |
cf8b8975 | 548 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
549 | } |
550 | ||
551 | /* | |
552 | * Too bad. The drive wants to send us data which we are not ready to accept. | |
553 | * Just throw it away. | |
554 | */ | |
555 | static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount) | |
556 | { | |
557 | while (bcount--) | |
558 | (void) HWIF(drive)->INB(IDE_DATA_REG); | |
559 | } | |
560 | ||
561 | #if IDEFLOPPY_DEBUG_BUGS | |
562 | static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount) | |
563 | { | |
564 | while (bcount--) | |
565 | HWIF(drive)->OUTB(0, IDE_DATA_REG); | |
566 | } | |
567 | #endif /* IDEFLOPPY_DEBUG_BUGS */ | |
568 | ||
569 | ||
570 | /* | |
571 | * idefloppy_do_end_request is used to finish servicing a request. | |
572 | * | |
573 | * For read/write requests, we will call ide_end_request to pass to the | |
574 | * next buffer. | |
575 | */ | |
576 | static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs) | |
577 | { | |
578 | idefloppy_floppy_t *floppy = drive->driver_data; | |
579 | struct request *rq = HWGROUP(drive)->rq; | |
580 | int error; | |
581 | ||
582 | debug_log(KERN_INFO "Reached idefloppy_end_request\n"); | |
583 | ||
584 | switch (uptodate) { | |
585 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; | |
586 | case 1: error = 0; break; | |
587 | default: error = uptodate; | |
588 | } | |
589 | if (error) | |
590 | floppy->failed_pc = NULL; | |
591 | /* Why does this happen? */ | |
592 | if (!rq) | |
593 | return 0; | |
4aff5e23 | 594 | if (!blk_special_request(rq)) { |
1da177e4 LT |
595 | /* our real local end request function */ |
596 | ide_end_request(drive, uptodate, nsecs); | |
597 | return 0; | |
598 | } | |
599 | rq->errors = error; | |
600 | /* fixme: need to move this local also */ | |
601 | ide_end_drive_cmd(drive, 0, 0); | |
602 | return 0; | |
603 | } | |
604 | ||
605 | static void idefloppy_input_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) | |
606 | { | |
607 | struct request *rq = pc->rq; | |
608 | struct bio_vec *bvec; | |
5705f702 | 609 | struct req_iterator iter; |
1da177e4 LT |
610 | unsigned long flags; |
611 | char *data; | |
5705f702 | 612 | int count, done = 0; |
1da177e4 | 613 | |
5705f702 | 614 | rq_for_each_segment(bvec, rq, iter) { |
6c92e699 JA |
615 | if (!bcount) |
616 | break; | |
1da177e4 | 617 | |
6c92e699 | 618 | count = min(bvec->bv_len, bcount); |
1da177e4 | 619 | |
6c92e699 JA |
620 | data = bvec_kmap_irq(bvec, &flags); |
621 | drive->hwif->atapi_input_bytes(drive, data, count); | |
622 | bvec_kunmap_irq(data, &flags); | |
1da177e4 | 623 | |
6c92e699 JA |
624 | bcount -= count; |
625 | pc->b_count += count; | |
626 | done += count; | |
1da177e4 LT |
627 | } |
628 | ||
629 | idefloppy_do_end_request(drive, 1, done >> 9); | |
630 | ||
631 | if (bcount) { | |
632 | printk(KERN_ERR "%s: leftover data in idefloppy_input_buffers, bcount == %d\n", drive->name, bcount); | |
633 | idefloppy_discard_data(drive, bcount); | |
634 | } | |
635 | } | |
636 | ||
637 | static void idefloppy_output_buffers (ide_drive_t *drive, idefloppy_pc_t *pc, unsigned int bcount) | |
638 | { | |
639 | struct request *rq = pc->rq; | |
5705f702 | 640 | struct req_iterator iter; |
1da177e4 LT |
641 | struct bio_vec *bvec; |
642 | unsigned long flags; | |
5705f702 | 643 | int count, done = 0; |
1da177e4 LT |
644 | char *data; |
645 | ||
5705f702 | 646 | rq_for_each_segment(bvec, rq, iter) { |
6c92e699 JA |
647 | if (!bcount) |
648 | break; | |
1da177e4 | 649 | |
6c92e699 | 650 | count = min(bvec->bv_len, bcount); |
1da177e4 | 651 | |
6c92e699 JA |
652 | data = bvec_kmap_irq(bvec, &flags); |
653 | drive->hwif->atapi_output_bytes(drive, data, count); | |
654 | bvec_kunmap_irq(data, &flags); | |
1da177e4 | 655 | |
6c92e699 JA |
656 | bcount -= count; |
657 | pc->b_count += count; | |
658 | done += count; | |
1da177e4 LT |
659 | } |
660 | ||
661 | idefloppy_do_end_request(drive, 1, done >> 9); | |
662 | ||
c7ea4b31 | 663 | #if IDEFLOPPY_DEBUG_BUGS |
1da177e4 LT |
664 | if (bcount) { |
665 | printk(KERN_ERR "%s: leftover data in idefloppy_output_buffers, bcount == %d\n", drive->name, bcount); | |
666 | idefloppy_write_zeros(drive, bcount); | |
667 | } | |
c7ea4b31 | 668 | #endif |
1da177e4 LT |
669 | } |
670 | ||
671 | static void idefloppy_update_buffers (ide_drive_t *drive, idefloppy_pc_t *pc) | |
672 | { | |
673 | struct request *rq = pc->rq; | |
674 | struct bio *bio = rq->bio; | |
675 | ||
676 | while ((bio = rq->bio) != NULL) | |
677 | idefloppy_do_end_request(drive, 1, 0); | |
678 | } | |
679 | ||
680 | /* | |
681 | * idefloppy_queue_pc_head generates a new packet command request in front | |
682 | * of the request queue, before the current request, so that it will be | |
683 | * processed immediately, on the next pass through the driver. | |
684 | */ | |
685 | static void idefloppy_queue_pc_head (ide_drive_t *drive,idefloppy_pc_t *pc,struct request *rq) | |
686 | { | |
687 | struct ide_floppy_obj *floppy = drive->driver_data; | |
688 | ||
689 | ide_init_drive_cmd(rq); | |
690 | rq->buffer = (char *) pc; | |
4aff5e23 | 691 | rq->cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
692 | rq->rq_disk = floppy->disk; |
693 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
694 | } | |
695 | ||
696 | static idefloppy_pc_t *idefloppy_next_pc_storage (ide_drive_t *drive) | |
697 | { | |
698 | idefloppy_floppy_t *floppy = drive->driver_data; | |
699 | ||
700 | if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK) | |
701 | floppy->pc_stack_index=0; | |
702 | return (&floppy->pc_stack[floppy->pc_stack_index++]); | |
703 | } | |
704 | ||
705 | static struct request *idefloppy_next_rq_storage (ide_drive_t *drive) | |
706 | { | |
707 | idefloppy_floppy_t *floppy = drive->driver_data; | |
708 | ||
709 | if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) | |
710 | floppy->rq_stack_index = 0; | |
711 | return (&floppy->rq_stack[floppy->rq_stack_index++]); | |
712 | } | |
713 | ||
714 | /* | |
715 | * idefloppy_analyze_error is called on each failed packet command retry | |
716 | * to analyze the request sense. | |
717 | */ | |
718 | static void idefloppy_analyze_error (ide_drive_t *drive,idefloppy_request_sense_result_t *result) | |
719 | { | |
720 | idefloppy_floppy_t *floppy = drive->driver_data; | |
721 | ||
722 | floppy->sense_key = result->sense_key; | |
723 | floppy->asc = result->asc; | |
724 | floppy->ascq = result->ascq; | |
725 | floppy->progress_indication = result->sksv[0] & 0x80 ? | |
726 | (u16)get_unaligned((u16 *)(result->sksv+1)):0x10000; | |
727 | if (floppy->failed_pc) | |
728 | debug_log(KERN_INFO "ide-floppy: pc = %x, sense key = %x, " | |
729 | "asc = %x, ascq = %x\n", floppy->failed_pc->c[0], | |
730 | result->sense_key, result->asc, result->ascq); | |
731 | else | |
732 | debug_log(KERN_INFO "ide-floppy: sense key = %x, asc = %x, " | |
733 | "ascq = %x\n", result->sense_key, | |
734 | result->asc, result->ascq); | |
735 | } | |
736 | ||
737 | static void idefloppy_request_sense_callback (ide_drive_t *drive) | |
738 | { | |
739 | idefloppy_floppy_t *floppy = drive->driver_data; | |
740 | ||
741 | debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); | |
742 | ||
743 | if (!floppy->pc->error) { | |
744 | idefloppy_analyze_error(drive,(idefloppy_request_sense_result_t *) floppy->pc->buffer); | |
745 | idefloppy_do_end_request(drive, 1, 0); | |
746 | } else { | |
747 | printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting request!\n"); | |
748 | idefloppy_do_end_request(drive, 0, 0); | |
749 | } | |
750 | } | |
751 | ||
752 | /* | |
753 | * General packet command callback function. | |
754 | */ | |
755 | static void idefloppy_pc_callback (ide_drive_t *drive) | |
756 | { | |
757 | idefloppy_floppy_t *floppy = drive->driver_data; | |
758 | ||
759 | debug_log(KERN_INFO "ide-floppy: Reached %s\n", __FUNCTION__); | |
760 | ||
761 | idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0); | |
762 | } | |
763 | ||
764 | /* | |
765 | * idefloppy_init_pc initializes a packet command. | |
766 | */ | |
767 | static void idefloppy_init_pc (idefloppy_pc_t *pc) | |
768 | { | |
769 | memset(pc->c, 0, 12); | |
770 | pc->retries = 0; | |
771 | pc->flags = 0; | |
772 | pc->request_transfer = 0; | |
773 | pc->buffer = pc->pc_buffer; | |
774 | pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE; | |
775 | pc->callback = &idefloppy_pc_callback; | |
776 | } | |
777 | ||
778 | static void idefloppy_create_request_sense_cmd (idefloppy_pc_t *pc) | |
779 | { | |
780 | idefloppy_init_pc(pc); | |
781 | pc->c[0] = IDEFLOPPY_REQUEST_SENSE_CMD; | |
782 | pc->c[4] = 255; | |
783 | pc->request_transfer = 18; | |
784 | pc->callback = &idefloppy_request_sense_callback; | |
785 | } | |
786 | ||
787 | /* | |
788 | * idefloppy_retry_pc is called when an error was detected during the | |
789 | * last packet command. We queue a request sense packet command in | |
790 | * the head of the request list. | |
791 | */ | |
792 | static void idefloppy_retry_pc (ide_drive_t *drive) | |
793 | { | |
794 | idefloppy_pc_t *pc; | |
795 | struct request *rq; | |
796 | atapi_error_t error; | |
797 | ||
798 | error.all = HWIF(drive)->INB(IDE_ERROR_REG); | |
799 | pc = idefloppy_next_pc_storage(drive); | |
800 | rq = idefloppy_next_rq_storage(drive); | |
801 | idefloppy_create_request_sense_cmd(pc); | |
802 | idefloppy_queue_pc_head(drive, pc, rq); | |
803 | } | |
804 | ||
805 | /* | |
806 | * idefloppy_pc_intr is the usual interrupt handler which will be called | |
807 | * during a packet command. | |
808 | */ | |
809 | static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive) | |
810 | { | |
811 | idefloppy_floppy_t *floppy = drive->driver_data; | |
812 | atapi_status_t status; | |
813 | atapi_bcount_t bcount; | |
814 | atapi_ireason_t ireason; | |
815 | idefloppy_pc_t *pc = floppy->pc; | |
816 | struct request *rq = pc->rq; | |
817 | unsigned int temp; | |
818 | ||
819 | debug_log(KERN_INFO "ide-floppy: Reached %s interrupt handler\n", | |
820 | __FUNCTION__); | |
821 | ||
822 | if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { | |
823 | if (HWIF(drive)->ide_dma_end(drive)) { | |
824 | set_bit(PC_DMA_ERROR, &pc->flags); | |
825 | } else { | |
826 | pc->actually_transferred = pc->request_transfer; | |
827 | idefloppy_update_buffers(drive, pc); | |
828 | } | |
829 | debug_log(KERN_INFO "ide-floppy: DMA finished\n"); | |
830 | } | |
831 | ||
832 | /* Clear the interrupt */ | |
833 | status.all = HWIF(drive)->INB(IDE_STATUS_REG); | |
834 | ||
835 | if (!status.b.drq) { /* No more interrupts */ | |
836 | debug_log(KERN_INFO "Packet command completed, %d bytes " | |
837 | "transferred\n", pc->actually_transferred); | |
838 | clear_bit(PC_DMA_IN_PROGRESS, &pc->flags); | |
839 | ||
366c7f55 | 840 | local_irq_enable_in_hardirq(); |
1da177e4 LT |
841 | |
842 | if (status.b.check || test_bit(PC_DMA_ERROR, &pc->flags)) { | |
843 | /* Error detected */ | |
844 | debug_log(KERN_INFO "ide-floppy: %s: I/O error\n", | |
845 | drive->name); | |
846 | rq->errors++; | |
847 | if (pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) { | |
848 | printk(KERN_ERR "ide-floppy: I/O error in " | |
849 | "request sense command\n"); | |
850 | return ide_do_reset(drive); | |
851 | } | |
852 | /* Retry operation */ | |
853 | idefloppy_retry_pc(drive); | |
854 | /* queued, but not started */ | |
855 | return ide_stopped; | |
856 | } | |
857 | pc->error = 0; | |
858 | if (floppy->failed_pc == pc) | |
859 | floppy->failed_pc = NULL; | |
860 | /* Command finished - Call the callback function */ | |
861 | pc->callback(drive); | |
862 | return ide_stopped; | |
863 | } | |
864 | ||
865 | if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) { | |
866 | printk(KERN_ERR "ide-floppy: The floppy wants to issue " | |
867 | "more interrupts in DMA mode\n"); | |
7469aaf6 | 868 | ide_dma_off(drive); |
1da177e4 LT |
869 | return ide_do_reset(drive); |
870 | } | |
871 | ||
872 | /* Get the number of bytes to transfer */ | |
873 | bcount.b.high = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
874 | bcount.b.low = HWIF(drive)->INB(IDE_BCOUNTL_REG); | |
875 | /* on this interrupt */ | |
876 | ireason.all = HWIF(drive)->INB(IDE_IREASON_REG); | |
877 | ||
878 | if (ireason.b.cod) { | |
879 | printk(KERN_ERR "ide-floppy: CoD != 0 in idefloppy_pc_intr\n"); | |
880 | return ide_do_reset(drive); | |
881 | } | |
882 | if (ireason.b.io == test_bit(PC_WRITING, &pc->flags)) { | |
883 | /* Hopefully, we will never get here */ | |
884 | printk(KERN_ERR "ide-floppy: We wanted to %s, ", | |
885 | ireason.b.io ? "Write":"Read"); | |
886 | printk(KERN_ERR "but the floppy wants us to %s !\n", | |
887 | ireason.b.io ? "Read":"Write"); | |
888 | return ide_do_reset(drive); | |
889 | } | |
890 | if (!test_bit(PC_WRITING, &pc->flags)) { | |
891 | /* Reading - Check that we have enough space */ | |
892 | temp = pc->actually_transferred + bcount.all; | |
893 | if (temp > pc->request_transfer) { | |
894 | if (temp > pc->buffer_size) { | |
895 | printk(KERN_ERR "ide-floppy: The floppy wants " | |
896 | "to send us more data than expected " | |
897 | "- discarding data\n"); | |
898 | idefloppy_discard_data(drive,bcount.all); | |
125e1874 | 899 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
900 | ide_set_handler(drive, |
901 | &idefloppy_pc_intr, | |
902 | IDEFLOPPY_WAIT_CMD, | |
903 | NULL); | |
904 | return ide_started; | |
905 | } | |
906 | debug_log(KERN_NOTICE "ide-floppy: The floppy wants to " | |
907 | "send us more data than expected - " | |
908 | "allowing transfer\n"); | |
909 | } | |
910 | } | |
911 | if (test_bit(PC_WRITING, &pc->flags)) { | |
912 | if (pc->buffer != NULL) | |
913 | /* Write the current buffer */ | |
914 | HWIF(drive)->atapi_output_bytes(drive, | |
915 | pc->current_position, | |
916 | bcount.all); | |
917 | else | |
918 | idefloppy_output_buffers(drive, pc, bcount.all); | |
919 | } else { | |
920 | if (pc->buffer != NULL) | |
921 | /* Read the current buffer */ | |
922 | HWIF(drive)->atapi_input_bytes(drive, | |
923 | pc->current_position, | |
924 | bcount.all); | |
925 | else | |
926 | idefloppy_input_buffers(drive, pc, bcount.all); | |
927 | } | |
928 | /* Update the current position */ | |
929 | pc->actually_transferred += bcount.all; | |
930 | pc->current_position += bcount.all; | |
931 | ||
125e1874 | 932 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
933 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); /* And set the interrupt handler again */ |
934 | return ide_started; | |
935 | } | |
936 | ||
937 | /* | |
938 | * This is the original routine that did the packet transfer. | |
939 | * It fails at high speeds on the Iomega ZIP drive, so there's a slower version | |
940 | * for that drive below. The algorithm is chosen based on drive type | |
941 | */ | |
942 | static ide_startstop_t idefloppy_transfer_pc (ide_drive_t *drive) | |
943 | { | |
944 | ide_startstop_t startstop; | |
945 | idefloppy_floppy_t *floppy = drive->driver_data; | |
946 | atapi_ireason_t ireason; | |
947 | ||
948 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
949 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
950 | "initiated yet DRQ isn't asserted\n"); | |
951 | return startstop; | |
952 | } | |
953 | ireason.all = HWIF(drive)->INB(IDE_IREASON_REG); | |
954 | if (!ireason.b.cod || ireason.b.io) { | |
955 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while " | |
956 | "issuing a packet command\n"); | |
957 | return ide_do_reset(drive); | |
958 | } | |
125e1874 | 959 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
960 | /* Set the interrupt routine */ |
961 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
962 | /* Send the actual packet */ | |
963 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
964 | return ide_started; | |
965 | } | |
966 | ||
967 | ||
968 | /* | |
969 | * What we have here is a classic case of a top half / bottom half | |
970 | * interrupt service routine. In interrupt mode, the device sends | |
971 | * an interrupt to signal it's ready to receive a packet. However, | |
972 | * we need to delay about 2-3 ticks before issuing the packet or we | |
973 | * gets in trouble. | |
974 | * | |
975 | * So, follow carefully. transfer_pc1 is called as an interrupt (or | |
976 | * directly). In either case, when the device says it's ready for a | |
977 | * packet, we schedule the packet transfer to occur about 2-3 ticks | |
978 | * later in transfer_pc2. | |
979 | */ | |
980 | static int idefloppy_transfer_pc2 (ide_drive_t *drive) | |
981 | { | |
982 | idefloppy_floppy_t *floppy = drive->driver_data; | |
983 | ||
984 | /* Send the actual packet */ | |
985 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
986 | /* Timeout for the packet command */ | |
987 | return IDEFLOPPY_WAIT_CMD; | |
988 | } | |
989 | ||
990 | static ide_startstop_t idefloppy_transfer_pc1 (ide_drive_t *drive) | |
991 | { | |
992 | idefloppy_floppy_t *floppy = drive->driver_data; | |
993 | ide_startstop_t startstop; | |
994 | atapi_ireason_t ireason; | |
995 | ||
996 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
997 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
998 | "initiated yet DRQ isn't asserted\n"); | |
999 | return startstop; | |
1000 | } | |
1001 | ireason.all = HWIF(drive)->INB(IDE_IREASON_REG); | |
1002 | if (!ireason.b.cod || ireason.b.io) { | |
1003 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) " | |
1004 | "while issuing a packet command\n"); | |
1005 | return ide_do_reset(drive); | |
1006 | } | |
1007 | /* | |
1008 | * The following delay solves a problem with ATAPI Zip 100 drives | |
1009 | * where the Busy flag was apparently being deasserted before the | |
1010 | * unit was ready to receive data. This was happening on a | |
1011 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
1012 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
1013 | * used until after the packet is moved in about 50 msec. | |
1014 | */ | |
125e1874 | 1015 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
1016 | ide_set_handler(drive, |
1017 | &idefloppy_pc_intr, /* service routine for packet command */ | |
1018 | floppy->ticks, /* wait this long before "failing" */ | |
1019 | &idefloppy_transfer_pc2); /* fail == transfer_pc2 */ | |
1020 | return ide_started; | |
1021 | } | |
1022 | ||
1023 | /** | |
1024 | * idefloppy_should_report_error() | |
1025 | * | |
1026 | * Supresses error messages resulting from Medium not present | |
1027 | */ | |
1028 | static inline int idefloppy_should_report_error(idefloppy_floppy_t *floppy) | |
1029 | { | |
1030 | if (floppy->sense_key == 0x02 && | |
1031 | floppy->asc == 0x3a && | |
1032 | floppy->ascq == 0x00) | |
1033 | return 0; | |
1034 | return 1; | |
1035 | } | |
1036 | ||
1037 | /* | |
1038 | * Issue a packet command | |
1039 | */ | |
1040 | static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *pc) | |
1041 | { | |
1042 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1043 | ide_hwif_t *hwif = drive->hwif; | |
1044 | atapi_feature_t feature; | |
1045 | atapi_bcount_t bcount; | |
1046 | ide_handler_t *pkt_xfer_routine; | |
1047 | ||
c7ea4b31 JB |
1048 | #if 0 /* Accessing floppy->pc is not valid here, the previous pc may be gone |
1049 | and have lived on another thread's stack; that stack may have become | |
1050 | unmapped meanwhile (CONFIG_DEBUG_PAGEALLOC). */ | |
1da177e4 LT |
1051 | #if IDEFLOPPY_DEBUG_BUGS |
1052 | if (floppy->pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD && | |
1053 | pc->c[0] == IDEFLOPPY_REQUEST_SENSE_CMD) { | |
1054 | printk(KERN_ERR "ide-floppy: possible ide-floppy.c bug - " | |
1055 | "Two request sense in serial were issued\n"); | |
1056 | } | |
1057 | #endif /* IDEFLOPPY_DEBUG_BUGS */ | |
c7ea4b31 | 1058 | #endif |
1da177e4 LT |
1059 | |
1060 | if (floppy->failed_pc == NULL && | |
1061 | pc->c[0] != IDEFLOPPY_REQUEST_SENSE_CMD) | |
1062 | floppy->failed_pc = pc; | |
1063 | /* Set the current packet command */ | |
1064 | floppy->pc = pc; | |
1065 | ||
1066 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES || | |
1067 | test_bit(PC_ABORT, &pc->flags)) { | |
1068 | /* | |
1069 | * We will "abort" retrying a packet command in case | |
1070 | * a legitimate error code was received. | |
1071 | */ | |
1072 | if (!test_bit(PC_ABORT, &pc->flags)) { | |
1073 | if (!test_bit(PC_SUPPRESS_ERROR, &pc->flags)) { | |
1074 | if (idefloppy_should_report_error(floppy)) | |
1075 | printk(KERN_ERR "ide-floppy: %s: I/O error, " | |
1076 | "pc = %2x, key = %2x, " | |
1077 | "asc = %2x, ascq = %2x\n", | |
1078 | drive->name, pc->c[0], | |
1079 | floppy->sense_key, | |
1080 | floppy->asc, floppy->ascq); | |
1081 | } | |
1082 | /* Giving up */ | |
1083 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
1084 | } | |
1085 | floppy->failed_pc = NULL; | |
1086 | pc->callback(drive); | |
1087 | return ide_stopped; | |
1088 | } | |
1089 | ||
1090 | debug_log(KERN_INFO "Retry number - %d\n",pc->retries); | |
1091 | ||
1092 | pc->retries++; | |
1093 | /* We haven't transferred any data yet */ | |
1094 | pc->actually_transferred = 0; | |
1095 | pc->current_position = pc->buffer; | |
1096 | bcount.all = min(pc->request_transfer, 63 * 1024); | |
1097 | ||
7469aaf6 BZ |
1098 | if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) |
1099 | ide_dma_off(drive); | |
1100 | ||
1da177e4 LT |
1101 | feature.all = 0; |
1102 | ||
1103 | if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma) | |
1104 | feature.b.dma = !hwif->dma_setup(drive); | |
1105 | ||
1106 | if (IDE_CONTROL_REG) | |
1107 | HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG); | |
1108 | /* Use PIO/DMA */ | |
1109 | HWIF(drive)->OUTB(feature.all, IDE_FEATURE_REG); | |
1110 | HWIF(drive)->OUTB(bcount.b.high, IDE_BCOUNTH_REG); | |
1111 | HWIF(drive)->OUTB(bcount.b.low, IDE_BCOUNTL_REG); | |
1112 | HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG); | |
1113 | ||
1114 | if (feature.b.dma) { /* Begin DMA, if necessary */ | |
1115 | set_bit(PC_DMA_IN_PROGRESS, &pc->flags); | |
1116 | hwif->dma_start(drive); | |
1117 | } | |
1118 | ||
1119 | /* Can we transfer the packet when we get the interrupt or wait? */ | |
1120 | if (test_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags)) { | |
1121 | /* wait */ | |
1122 | pkt_xfer_routine = &idefloppy_transfer_pc1; | |
1123 | } else { | |
1124 | /* immediate */ | |
1125 | pkt_xfer_routine = &idefloppy_transfer_pc; | |
1126 | } | |
1127 | ||
1128 | if (test_bit (IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags)) { | |
1129 | /* Issue the packet command */ | |
1130 | ide_execute_command(drive, WIN_PACKETCMD, | |
1131 | pkt_xfer_routine, | |
1132 | IDEFLOPPY_WAIT_CMD, | |
1133 | NULL); | |
1134 | return ide_started; | |
1135 | } else { | |
1136 | /* Issue the packet command */ | |
1137 | HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG); | |
1138 | return (*pkt_xfer_routine) (drive); | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | static void idefloppy_rw_callback (ide_drive_t *drive) | |
1143 | { | |
1144 | debug_log(KERN_INFO "ide-floppy: Reached idefloppy_rw_callback\n"); | |
1145 | ||
1146 | idefloppy_do_end_request(drive, 1, 0); | |
1147 | return; | |
1148 | } | |
1149 | ||
1150 | static void idefloppy_create_prevent_cmd (idefloppy_pc_t *pc, int prevent) | |
1151 | { | |
1152 | debug_log(KERN_INFO "ide-floppy: creating prevent removal command, " | |
1153 | "prevent = %d\n", prevent); | |
1154 | ||
1155 | idefloppy_init_pc(pc); | |
1156 | pc->c[0] = IDEFLOPPY_PREVENT_REMOVAL_CMD; | |
1157 | pc->c[4] = prevent; | |
1158 | } | |
1159 | ||
1160 | static void idefloppy_create_read_capacity_cmd (idefloppy_pc_t *pc) | |
1161 | { | |
1162 | idefloppy_init_pc(pc); | |
1163 | pc->c[0] = IDEFLOPPY_READ_CAPACITY_CMD; | |
1164 | pc->c[7] = 255; | |
1165 | pc->c[8] = 255; | |
1166 | pc->request_transfer = 255; | |
1167 | } | |
1168 | ||
1169 | static void idefloppy_create_format_unit_cmd (idefloppy_pc_t *pc, int b, int l, | |
1170 | int flags) | |
1171 | { | |
1172 | idefloppy_init_pc(pc); | |
1173 | pc->c[0] = IDEFLOPPY_FORMAT_UNIT_CMD; | |
1174 | pc->c[1] = 0x17; | |
1175 | ||
1176 | memset(pc->buffer, 0, 12); | |
1177 | pc->buffer[1] = 0xA2; | |
1178 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ | |
1179 | ||
1180 | if (flags & 1) /* Verify bit on... */ | |
1181 | pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */ | |
1182 | pc->buffer[3] = 8; | |
1183 | ||
1184 | put_unaligned(htonl(b), (unsigned int *)(&pc->buffer[4])); | |
1185 | put_unaligned(htonl(l), (unsigned int *)(&pc->buffer[8])); | |
1186 | pc->buffer_size=12; | |
1187 | set_bit(PC_WRITING, &pc->flags); | |
1188 | } | |
1189 | ||
1190 | /* | |
1191 | * A mode sense command is used to "sense" floppy parameters. | |
1192 | */ | |
1193 | static void idefloppy_create_mode_sense_cmd (idefloppy_pc_t *pc, u8 page_code, u8 type) | |
1194 | { | |
1195 | u16 length = sizeof(idefloppy_mode_parameter_header_t); | |
1196 | ||
1197 | idefloppy_init_pc(pc); | |
1198 | pc->c[0] = IDEFLOPPY_MODE_SENSE_CMD; | |
1199 | pc->c[1] = 0; | |
1200 | pc->c[2] = page_code + (type << 6); | |
1201 | ||
1202 | switch (page_code) { | |
1203 | case IDEFLOPPY_CAPABILITIES_PAGE: | |
1204 | length += 12; | |
1205 | break; | |
1206 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
1207 | length += 32; | |
1208 | break; | |
1209 | default: | |
1210 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1211 | "in create_mode_sense_cmd\n"); | |
1212 | } | |
1213 | put_unaligned(htons(length), (u16 *) &pc->c[7]); | |
1214 | pc->request_transfer = length; | |
1215 | } | |
1216 | ||
1217 | static void idefloppy_create_start_stop_cmd (idefloppy_pc_t *pc, int start) | |
1218 | { | |
1219 | idefloppy_init_pc(pc); | |
1220 | pc->c[0] = IDEFLOPPY_START_STOP_CMD; | |
1221 | pc->c[4] = start; | |
1222 | } | |
1223 | ||
1224 | static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc) | |
1225 | { | |
1226 | idefloppy_init_pc(pc); | |
1227 | pc->c[0] = IDEFLOPPY_TEST_UNIT_READY_CMD; | |
1228 | } | |
1229 | ||
1230 | static void idefloppy_create_rw_cmd (idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq, unsigned long sector) | |
1231 | { | |
1232 | int block = sector / floppy->bs_factor; | |
1233 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
1234 | int cmd = rq_data_dir(rq); | |
1235 | ||
1236 | debug_log("create_rw1%d_cmd: block == %d, blocks == %d\n", | |
1237 | 2 * test_bit (IDEFLOPPY_USE_READ12, &floppy->flags), | |
1238 | block, blocks); | |
1239 | ||
1240 | idefloppy_init_pc(pc); | |
1241 | if (test_bit(IDEFLOPPY_USE_READ12, &floppy->flags)) { | |
1242 | pc->c[0] = cmd == READ ? IDEFLOPPY_READ12_CMD : IDEFLOPPY_WRITE12_CMD; | |
1243 | put_unaligned(htonl(blocks), (unsigned int *) &pc->c[6]); | |
1244 | } else { | |
1245 | pc->c[0] = cmd == READ ? IDEFLOPPY_READ10_CMD : IDEFLOPPY_WRITE10_CMD; | |
1246 | put_unaligned(htons(blocks), (unsigned short *) &pc->c[7]); | |
1247 | } | |
1248 | put_unaligned(htonl(block), (unsigned int *) &pc->c[2]); | |
1249 | pc->callback = &idefloppy_rw_callback; | |
1250 | pc->rq = rq; | |
1251 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; | |
4aff5e23 | 1252 | if (rq->cmd_flags & REQ_RW) |
1da177e4 LT |
1253 | set_bit(PC_WRITING, &pc->flags); |
1254 | pc->buffer = NULL; | |
1255 | pc->request_transfer = pc->buffer_size = blocks * floppy->block_size; | |
1256 | set_bit(PC_DMA_RECOMMENDED, &pc->flags); | |
1257 | } | |
1258 | ||
3d6392cf | 1259 | static void |
1da177e4 LT |
1260 | idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, struct request *rq) |
1261 | { | |
1da177e4 | 1262 | idefloppy_init_pc(pc); |
3d6392cf | 1263 | pc->callback = &idefloppy_rw_callback; |
1da177e4 | 1264 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf JA |
1265 | pc->rq = rq; |
1266 | pc->b_count = rq->data_len; | |
1267 | if (rq->data_len && rq_data_dir(rq) == WRITE) | |
1268 | set_bit(PC_WRITING, &pc->flags); | |
1269 | pc->buffer = rq->data; | |
1270 | if (rq->bio) | |
1271 | set_bit(PC_DMA_RECOMMENDED, &pc->flags); | |
1272 | ||
1273 | /* | |
1274 | * possibly problematic, doesn't look like ide-floppy correctly | |
1275 | * handled scattered requests if dma fails... | |
1276 | */ | |
1277 | pc->request_transfer = pc->buffer_size = rq->data_len; | |
1da177e4 LT |
1278 | } |
1279 | ||
1280 | /* | |
1281 | * idefloppy_do_request is our request handling function. | |
1282 | */ | |
1283 | static ide_startstop_t idefloppy_do_request (ide_drive_t *drive, struct request *rq, sector_t block_s) | |
1284 | { | |
1285 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1286 | idefloppy_pc_t *pc; | |
1287 | unsigned long block = (unsigned long)block_s; | |
1288 | ||
cdd60262 | 1289 | debug_log(KERN_INFO "dev: %s, flags: %lx, errors: %d\n", |
18cddac3 | 1290 | rq->rq_disk ? rq->rq_disk->disk_name : "?", |
1da177e4 LT |
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 | } | |
4aff5e23 | 1310 | if (blk_fs_request(rq)) { |
1da177e4 LT |
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); | |
4aff5e23 | 1320 | } else if (blk_special_request(rq)) { |
1da177e4 | 1321 | pc = (idefloppy_pc_t *) rq->buffer; |
4aff5e23 | 1322 | } else if (blk_pc_request(rq)) { |
1da177e4 | 1323 | pc = idefloppy_next_pc_storage(drive); |
3d6392cf | 1324 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
1325 | } else { |
1326 | blk_dump_rq_flags(rq, | |
1327 | "ide-floppy: unsupported command in queue"); | |
1328 | idefloppy_do_end_request(drive, 0, 0); | |
1329 | return ide_stopped; | |
1330 | } | |
1331 | ||
1332 | pc->rq = rq; | |
1333 | return idefloppy_issue_pc(drive, pc); | |
1334 | } | |
1335 | ||
1336 | /* | |
1337 | * idefloppy_queue_pc_tail adds a special packet command request to the | |
1338 | * tail of the request queue, and waits for it to be serviced. | |
1339 | */ | |
1340 | static int idefloppy_queue_pc_tail (ide_drive_t *drive,idefloppy_pc_t *pc) | |
1341 | { | |
1342 | struct ide_floppy_obj *floppy = drive->driver_data; | |
1343 | struct request rq; | |
1344 | ||
1345 | ide_init_drive_cmd (&rq); | |
1346 | rq.buffer = (char *) pc; | |
4aff5e23 | 1347 | rq.cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
1348 | rq.rq_disk = floppy->disk; |
1349 | ||
1350 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
1351 | } | |
1352 | ||
1353 | /* | |
1354 | * Look at the flexible disk page parameters. We will ignore the CHS | |
1355 | * capacity parameters and use the LBA parameters instead. | |
1356 | */ | |
1357 | static int idefloppy_get_flexible_disk_page (ide_drive_t *drive) | |
1358 | { | |
1359 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1360 | idefloppy_pc_t pc; | |
1361 | idefloppy_mode_parameter_header_t *header; | |
1362 | idefloppy_flexible_disk_page_t *page; | |
1363 | int capacity, lba_capacity; | |
1364 | ||
1365 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, MODE_SENSE_CURRENT); | |
1366 | if (idefloppy_queue_pc_tail(drive,&pc)) { | |
1367 | printk(KERN_ERR "ide-floppy: Can't get flexible disk " | |
1368 | "page parameters\n"); | |
1369 | return 1; | |
1370 | } | |
1371 | header = (idefloppy_mode_parameter_header_t *) pc.buffer; | |
1372 | floppy->wp = header->wp; | |
1373 | set_disk_ro(floppy->disk, floppy->wp); | |
1374 | page = (idefloppy_flexible_disk_page_t *) (header + 1); | |
1375 | ||
1376 | page->transfer_rate = ntohs(page->transfer_rate); | |
1377 | page->sector_size = ntohs(page->sector_size); | |
1378 | page->cyls = ntohs(page->cyls); | |
1379 | page->rpm = ntohs(page->rpm); | |
1380 | capacity = page->cyls * page->heads * page->sectors * page->sector_size; | |
1381 | if (memcmp (page, &floppy->flexible_disk_page, sizeof (idefloppy_flexible_disk_page_t))) | |
1382 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " | |
1383 | "%d sector size, %d rpm\n", | |
1384 | drive->name, capacity / 1024, page->cyls, | |
1385 | page->heads, page->sectors, | |
1386 | page->transfer_rate / 8, page->sector_size, page->rpm); | |
1387 | ||
1388 | floppy->flexible_disk_page = *page; | |
1389 | drive->bios_cyl = page->cyls; | |
1390 | drive->bios_head = page->heads; | |
1391 | drive->bios_sect = page->sectors; | |
1392 | lba_capacity = floppy->blocks * floppy->block_size; | |
1393 | if (capacity < lba_capacity) { | |
1394 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
1395 | "bytes, but the drive only handles %d\n", | |
1396 | drive->name, lba_capacity, capacity); | |
1397 | floppy->blocks = floppy->block_size ? capacity / floppy->block_size : 0; | |
1398 | } | |
1399 | return 0; | |
1400 | } | |
1401 | ||
1402 | static int idefloppy_get_capability_page(ide_drive_t *drive) | |
1403 | { | |
1404 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1405 | idefloppy_pc_t pc; | |
1406 | idefloppy_mode_parameter_header_t *header; | |
1407 | idefloppy_capabilities_page_t *page; | |
1408 | ||
1409 | floppy->srfp = 0; | |
1410 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, | |
1411 | MODE_SENSE_CURRENT); | |
1412 | ||
1413 | set_bit(PC_SUPPRESS_ERROR, &pc.flags); | |
1414 | if (idefloppy_queue_pc_tail(drive,&pc)) { | |
1415 | return 1; | |
1416 | } | |
1417 | ||
1418 | header = (idefloppy_mode_parameter_header_t *) pc.buffer; | |
1419 | page= (idefloppy_capabilities_page_t *)(header+1); | |
1420 | floppy->srfp = page->srfp; | |
1421 | return (0); | |
1422 | } | |
1423 | ||
1424 | /* | |
1425 | * Determine if a media is present in the floppy drive, and if so, | |
1426 | * its LBA capacity. | |
1427 | */ | |
1428 | static int idefloppy_get_capacity (ide_drive_t *drive) | |
1429 | { | |
1430 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1431 | idefloppy_pc_t pc; | |
1432 | idefloppy_capacity_header_t *header; | |
1433 | idefloppy_capacity_descriptor_t *descriptor; | |
1434 | int i, descriptors, rc = 1, blocks, length; | |
1435 | ||
1436 | drive->bios_cyl = 0; | |
1437 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
1438 | floppy->blocks = 0; |
1439 | floppy->bs_factor = 1; | |
1da177e4 LT |
1440 | set_capacity(floppy->disk, 0); |
1441 | ||
1442 | idefloppy_create_read_capacity_cmd(&pc); | |
1443 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1444 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
1445 | return 1; | |
1446 | } | |
1447 | header = (idefloppy_capacity_header_t *) pc.buffer; | |
1448 | descriptors = header->length / sizeof(idefloppy_capacity_descriptor_t); | |
1449 | descriptor = (idefloppy_capacity_descriptor_t *) (header + 1); | |
1450 | ||
1451 | for (i = 0; i < descriptors; i++, descriptor++) { | |
1452 | blocks = descriptor->blocks = ntohl(descriptor->blocks); | |
1453 | length = descriptor->length = ntohs(descriptor->length); | |
1454 | ||
1455 | if (!i) | |
1456 | { | |
1457 | switch (descriptor->dc) { | |
1458 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ | |
1459 | case CAPACITY_UNFORMATTED: | |
1460 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) | |
1461 | /* | |
1462 | * If it is not a clik drive, break out | |
1463 | * (maintains previous driver behaviour) | |
1464 | */ | |
1465 | break; | |
1466 | case CAPACITY_CURRENT: | |
1467 | /* Normal Zip/LS-120 disks */ | |
1468 | if (memcmp(descriptor, &floppy->capacity, sizeof (idefloppy_capacity_descriptor_t))) | |
1469 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " | |
1470 | "sector size\n", drive->name, | |
1471 | blocks * length / 1024, blocks, length); | |
1472 | floppy->capacity = *descriptor; | |
1473 | if (!length || length % 512) { | |
1474 | printk(KERN_NOTICE "%s: %d bytes block size " | |
1475 | "not supported\n", drive->name, length); | |
1476 | } else { | |
1477 | floppy->blocks = blocks; | |
1478 | floppy->block_size = length; | |
1479 | if ((floppy->bs_factor = length / 512) != 1) | |
1480 | printk(KERN_NOTICE "%s: warning: non " | |
1481 | "512 bytes block size not " | |
1482 | "fully supported\n", | |
1483 | drive->name); | |
1484 | rc = 0; | |
1485 | } | |
1486 | break; | |
1487 | case CAPACITY_NO_CARTRIDGE: | |
1488 | /* | |
1489 | * This is a KERN_ERR so it appears on screen | |
1490 | * for the user to see | |
1491 | */ | |
1492 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
1493 | break; | |
1494 | case CAPACITY_INVALID: | |
1495 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
1496 | "in drive\n", drive->name); | |
1497 | break; | |
1498 | } | |
1499 | } | |
1500 | if (!i) { | |
1501 | debug_log( "Descriptor 0 Code: %d\n", | |
1502 | descriptor->dc); | |
1503 | } | |
1504 | debug_log( "Descriptor %d: %dkB, %d blocks, %d " | |
1505 | "sector size\n", i, blocks * length / 1024, blocks, | |
1506 | length); | |
1507 | } | |
1508 | ||
1509 | /* Clik! disk does not support get_flexible_disk_page */ | |
1510 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
1511 | (void) idefloppy_get_flexible_disk_page(drive); | |
1512 | } | |
1513 | ||
1514 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); | |
1515 | return rc; | |
1516 | } | |
1517 | ||
1518 | /* | |
1519 | ** Obtain the list of formattable capacities. | |
1520 | ** Very similar to idefloppy_get_capacity, except that we push the capacity | |
1521 | ** descriptors to userland, instead of our own structures. | |
1522 | ** | |
1523 | ** Userland gives us the following structure: | |
1524 | ** | |
1525 | ** struct idefloppy_format_capacities { | |
1526 | ** int nformats; | |
1527 | ** struct { | |
1528 | ** int nblocks; | |
1529 | ** int blocksize; | |
1530 | ** } formats[]; | |
1531 | ** } ; | |
1532 | ** | |
1533 | ** userland initializes nformats to the number of allocated formats[] | |
1534 | ** records. On exit we set nformats to the number of records we've | |
1535 | ** actually initialized. | |
1536 | ** | |
1537 | */ | |
1538 | ||
1539 | static int idefloppy_get_format_capacities(ide_drive_t *drive, int __user *arg) | |
1540 | { | |
1541 | idefloppy_pc_t pc; | |
1542 | idefloppy_capacity_header_t *header; | |
1543 | idefloppy_capacity_descriptor_t *descriptor; | |
1544 | int i, descriptors, blocks, length; | |
1545 | int u_array_size; | |
1546 | int u_index; | |
1547 | int __user *argp; | |
1548 | ||
1549 | if (get_user(u_array_size, arg)) | |
1550 | return (-EFAULT); | |
1551 | ||
1552 | if (u_array_size <= 0) | |
1553 | return (-EINVAL); | |
1554 | ||
1555 | idefloppy_create_read_capacity_cmd(&pc); | |
1556 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1557 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
1558 | return (-EIO); | |
1559 | } | |
1560 | header = (idefloppy_capacity_header_t *) pc.buffer; | |
1561 | descriptors = header->length / | |
1562 | sizeof(idefloppy_capacity_descriptor_t); | |
1563 | descriptor = (idefloppy_capacity_descriptor_t *) (header + 1); | |
1564 | ||
1565 | u_index = 0; | |
1566 | argp = arg + 1; | |
1567 | ||
1568 | /* | |
1569 | ** We always skip the first capacity descriptor. That's the | |
1570 | ** current capacity. We are interested in the remaining descriptors, | |
1571 | ** the formattable capacities. | |
1572 | */ | |
1573 | ||
1574 | for (i=0; i<descriptors; i++, descriptor++) { | |
1575 | if (u_index >= u_array_size) | |
1576 | break; /* User-supplied buffer too small */ | |
1577 | if (i == 0) | |
1578 | continue; /* Skip the first descriptor */ | |
1579 | ||
1580 | blocks = ntohl(descriptor->blocks); | |
1581 | length = ntohs(descriptor->length); | |
1582 | ||
1583 | if (put_user(blocks, argp)) | |
1584 | return(-EFAULT); | |
1585 | ++argp; | |
1586 | ||
1587 | if (put_user(length, argp)) | |
1588 | return (-EFAULT); | |
1589 | ++argp; | |
1590 | ||
1591 | ++u_index; | |
1592 | } | |
1593 | ||
1594 | if (put_user(u_index, arg)) | |
1595 | return (-EFAULT); | |
1596 | return (0); | |
1597 | } | |
1598 | ||
1599 | /* | |
1600 | ** Send ATAPI_FORMAT_UNIT to the drive. | |
1601 | ** | |
1602 | ** Userland gives us the following structure: | |
1603 | ** | |
1604 | ** struct idefloppy_format_command { | |
1605 | ** int nblocks; | |
1606 | ** int blocksize; | |
1607 | ** int flags; | |
1608 | ** } ; | |
1609 | ** | |
1610 | ** flags is a bitmask, currently, the only defined flag is: | |
1611 | ** | |
1612 | ** 0x01 - verify media after format. | |
1613 | */ | |
1614 | ||
1615 | static int idefloppy_begin_format(ide_drive_t *drive, int __user *arg) | |
1616 | { | |
1617 | int blocks; | |
1618 | int length; | |
1619 | int flags; | |
1620 | idefloppy_pc_t pc; | |
1621 | ||
1622 | if (get_user(blocks, arg) || | |
1623 | get_user(length, arg+1) || | |
1624 | get_user(flags, arg+2)) { | |
1625 | return (-EFAULT); | |
1626 | } | |
1627 | ||
1628 | /* Get the SFRP bit */ | |
1629 | (void) idefloppy_get_capability_page(drive); | |
1630 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); | |
1631 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1632 | return (-EIO); | |
1633 | } | |
1634 | ||
1635 | return (0); | |
1636 | } | |
1637 | ||
1638 | /* | |
1639 | ** Get ATAPI_FORMAT_UNIT progress indication. | |
1640 | ** | |
0779bf2d | 1641 | ** Userland gives a pointer to an int. The int is set to a progress |
1da177e4 LT |
1642 | ** indicator 0-65536, with 65536=100%. |
1643 | ** | |
1644 | ** If the drive does not support format progress indication, we just check | |
1645 | ** the dsc bit, and return either 0 or 65536. | |
1646 | */ | |
1647 | ||
1648 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) | |
1649 | { | |
1650 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1651 | idefloppy_pc_t pc; | |
1652 | int progress_indication = 0x10000; | |
1653 | ||
1654 | if (floppy->srfp) { | |
1655 | idefloppy_create_request_sense_cmd(&pc); | |
1656 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1657 | return (-EIO); | |
1658 | } | |
1659 | ||
1660 | if (floppy->sense_key == 2 && | |
1661 | floppy->asc == 4 && | |
1662 | floppy->ascq == 4) { | |
1663 | progress_indication = floppy->progress_indication; | |
1664 | } | |
1665 | /* Else assume format_unit has finished, and we're | |
1666 | ** at 0x10000 */ | |
1667 | } else { | |
1668 | atapi_status_t status; | |
1669 | unsigned long flags; | |
1670 | ||
1671 | local_irq_save(flags); | |
1672 | status.all = HWIF(drive)->INB(IDE_STATUS_REG); | |
1673 | local_irq_restore(flags); | |
1674 | ||
1675 | progress_indication = !status.b.dsc ? 0 : 0x10000; | |
1676 | } | |
1677 | if (put_user(progress_indication, arg)) | |
1678 | return (-EFAULT); | |
1679 | ||
1680 | return (0); | |
1681 | } | |
1682 | ||
1683 | /* | |
1684 | * Return the current floppy capacity. | |
1685 | */ | |
1686 | static sector_t idefloppy_capacity (ide_drive_t *drive) | |
1687 | { | |
1688 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1689 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
1690 | ||
1691 | return capacity; | |
1692 | } | |
1693 | ||
1694 | /* | |
1695 | * idefloppy_identify_device checks if we can support a drive, | |
1696 | * based on the ATAPI IDENTIFY command results. | |
1697 | */ | |
1698 | static int idefloppy_identify_device (ide_drive_t *drive,struct hd_driveid *id) | |
1699 | { | |
1700 | struct idefloppy_id_gcw gcw; | |
1701 | #if IDEFLOPPY_DEBUG_INFO | |
1702 | u16 mask,i; | |
1703 | char buffer[80]; | |
1704 | #endif /* IDEFLOPPY_DEBUG_INFO */ | |
1705 | ||
1706 | *((u16 *) &gcw) = id->config; | |
1707 | ||
1708 | #ifdef CONFIG_PPC | |
1709 | /* kludge for Apple PowerBook internal zip */ | |
1710 | if ((gcw.device_type == 5) && | |
1711 | !strstr(id->model, "CD-ROM") && | |
1712 | strstr(id->model, "ZIP")) | |
1713 | gcw.device_type = 0; | |
1714 | #endif | |
1715 | ||
1716 | #if IDEFLOPPY_DEBUG_INFO | |
1717 | printk(KERN_INFO "Dumping ATAPI Identify Device floppy parameters\n"); | |
1718 | switch (gcw.protocol) { | |
1719 | case 0: case 1: sprintf(buffer, "ATA");break; | |
1720 | case 2: sprintf(buffer, "ATAPI");break; | |
1721 | case 3: sprintf(buffer, "Reserved (Unknown to ide-floppy)");break; | |
1722 | } | |
1723 | printk(KERN_INFO "Protocol Type: %s\n", buffer); | |
1724 | switch (gcw.device_type) { | |
1725 | case 0: sprintf(buffer, "Direct-access Device");break; | |
1726 | case 1: sprintf(buffer, "Streaming Tape Device");break; | |
1727 | case 2: case 3: case 4: sprintf (buffer, "Reserved");break; | |
1728 | case 5: sprintf(buffer, "CD-ROM Device");break; | |
1729 | case 6: sprintf(buffer, "Reserved"); | |
1730 | case 7: sprintf(buffer, "Optical memory Device");break; | |
1731 | case 0x1f: sprintf(buffer, "Unknown or no Device type");break; | |
1732 | default: sprintf(buffer, "Reserved"); | |
1733 | } | |
1734 | printk(KERN_INFO "Device Type: %x - %s\n", gcw.device_type, buffer); | |
1735 | printk(KERN_INFO "Removable: %s\n",gcw.removable ? "Yes":"No"); | |
1736 | switch (gcw.drq_type) { | |
1737 | case 0: sprintf(buffer, "Microprocessor DRQ");break; | |
1738 | case 1: sprintf(buffer, "Interrupt DRQ");break; | |
1739 | case 2: sprintf(buffer, "Accelerated DRQ");break; | |
1740 | case 3: sprintf(buffer, "Reserved");break; | |
1741 | } | |
1742 | printk(KERN_INFO "Command Packet DRQ Type: %s\n", buffer); | |
1743 | switch (gcw.packet_size) { | |
1744 | case 0: sprintf(buffer, "12 bytes");break; | |
1745 | case 1: sprintf(buffer, "16 bytes");break; | |
1746 | default: sprintf(buffer, "Reserved");break; | |
1747 | } | |
1748 | printk(KERN_INFO "Command Packet Size: %s\n", buffer); | |
1749 | printk(KERN_INFO "Model: %.40s\n",id->model); | |
1750 | printk(KERN_INFO "Firmware Revision: %.8s\n",id->fw_rev); | |
1751 | printk(KERN_INFO "Serial Number: %.20s\n",id->serial_no); | |
1752 | printk(KERN_INFO "Write buffer size(?): %d bytes\n",id->buf_size*512); | |
1753 | printk(KERN_INFO "DMA: %s",id->capability & 0x01 ? "Yes\n":"No\n"); | |
1754 | printk(KERN_INFO "LBA: %s",id->capability & 0x02 ? "Yes\n":"No\n"); | |
1755 | printk(KERN_INFO "IORDY can be disabled: %s",id->capability & 0x04 ? "Yes\n":"No\n"); | |
1756 | printk(KERN_INFO "IORDY supported: %s",id->capability & 0x08 ? "Yes\n":"Unknown\n"); | |
1757 | printk(KERN_INFO "ATAPI overlap supported: %s",id->capability & 0x20 ? "Yes\n":"No\n"); | |
1758 | printk(KERN_INFO "PIO Cycle Timing Category: %d\n",id->tPIO); | |
1759 | printk(KERN_INFO "DMA Cycle Timing Category: %d\n",id->tDMA); | |
1760 | printk(KERN_INFO "Single Word DMA supported modes:\n"); | |
1761 | for (i=0,mask=1;i<8;i++,mask=mask << 1) { | |
1762 | if (id->dma_1word & mask) | |
1763 | printk(KERN_INFO " Mode %d%s\n", i, | |
1764 | (id->dma_1word & (mask << 8)) ? " (active)" : ""); | |
1765 | } | |
1766 | printk(KERN_INFO "Multi Word DMA supported modes:\n"); | |
1767 | for (i=0,mask=1;i<8;i++,mask=mask << 1) { | |
1768 | if (id->dma_mword & mask) | |
1769 | printk(KERN_INFO " Mode %d%s\n", i, | |
1770 | (id->dma_mword & (mask << 8)) ? " (active)" : ""); | |
1771 | } | |
1772 | if (id->field_valid & 0x0002) { | |
1773 | printk(KERN_INFO "Enhanced PIO Modes: %s\n", | |
1774 | id->eide_pio_modes & 1 ? "Mode 3":"None"); | |
1775 | if (id->eide_dma_min == 0) | |
1776 | sprintf(buffer, "Not supported"); | |
1777 | else | |
1778 | sprintf(buffer, "%d ns",id->eide_dma_min); | |
1779 | printk(KERN_INFO "Minimum Multi-word DMA cycle per word: %s\n", buffer); | |
1780 | if (id->eide_dma_time == 0) | |
1781 | sprintf(buffer, "Not supported"); | |
1782 | else | |
1783 | sprintf(buffer, "%d ns",id->eide_dma_time); | |
1784 | printk(KERN_INFO "Manufacturer\'s Recommended Multi-word cycle: %s\n", buffer); | |
1785 | if (id->eide_pio == 0) | |
1786 | sprintf(buffer, "Not supported"); | |
1787 | else | |
1788 | sprintf(buffer, "%d ns",id->eide_pio); | |
1789 | printk(KERN_INFO "Minimum PIO cycle without IORDY: %s\n", | |
1790 | buffer); | |
1791 | if (id->eide_pio_iordy == 0) | |
1792 | sprintf(buffer, "Not supported"); | |
1793 | else | |
1794 | sprintf(buffer, "%d ns",id->eide_pio_iordy); | |
1795 | printk(KERN_INFO "Minimum PIO cycle with IORDY: %s\n", buffer); | |
1796 | } else | |
1797 | printk(KERN_INFO "According to the device, fields 64-70 are not valid.\n"); | |
1798 | #endif /* IDEFLOPPY_DEBUG_INFO */ | |
1799 | ||
1800 | if (gcw.protocol != 2) | |
1801 | printk(KERN_ERR "ide-floppy: Protocol is not ATAPI\n"); | |
1802 | else if (gcw.device_type != 0) | |
1803 | printk(KERN_ERR "ide-floppy: Device type is not set to floppy\n"); | |
1804 | else if (!gcw.removable) | |
1805 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); | |
1806 | else if (gcw.drq_type == 3) { | |
1807 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type %d not supported\n", gcw.drq_type); | |
1808 | } else if (gcw.packet_size != 0) { | |
1809 | printk(KERN_ERR "ide-floppy: Packet size is not 12 bytes long\n"); | |
1810 | } else | |
1811 | return 1; | |
1812 | return 0; | |
1813 | } | |
1814 | ||
7662d046 | 1815 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1816 | static void idefloppy_add_settings(ide_drive_t *drive) |
1817 | { | |
1818 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1819 | ||
1820 | /* | |
1497943e | 1821 | * drive setting name read/write data type min max mul_factor div_factor data pointer set function |
1da177e4 | 1822 | */ |
1497943e BZ |
1823 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL); |
1824 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); | |
1825 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); | |
1826 | ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL); | |
1da177e4 | 1827 | } |
7662d046 BZ |
1828 | #else |
1829 | static inline void idefloppy_add_settings(ide_drive_t *drive) { ; } | |
1830 | #endif | |
1da177e4 LT |
1831 | |
1832 | /* | |
1833 | * Driver initialization. | |
1834 | */ | |
1835 | static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy) | |
1836 | { | |
1837 | struct idefloppy_id_gcw gcw; | |
1838 | ||
1839 | *((u16 *) &gcw) = drive->id->config; | |
1840 | floppy->pc = floppy->pc_stack; | |
1841 | if (gcw.drq_type == 1) | |
1842 | set_bit(IDEFLOPPY_DRQ_INTERRUPT, &floppy->flags); | |
1843 | /* | |
1844 | * We used to check revisions here. At this point however | |
1845 | * I'm giving up. Just assume they are all broken, its easier. | |
1846 | * | |
1847 | * The actual reason for the workarounds was likely | |
1848 | * a driver bug after all rather than a firmware bug, | |
1849 | * and the workaround below used to hide it. It should | |
1850 | * be fixed as of version 1.9, but to be on the safe side | |
1851 | * we'll leave the limitation below for the 2.2.x tree. | |
1852 | */ | |
1853 | ||
1854 | if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { | |
1855 | set_bit(IDEFLOPPY_ZIP_DRIVE, &floppy->flags); | |
1856 | /* This value will be visible in the /proc/ide/hdx/settings */ | |
1857 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
1858 | blk_queue_max_sectors(drive->queue, 64); | |
1859 | } | |
1860 | ||
1861 | /* | |
1862 | * Guess what? The IOMEGA Clik! drive also needs the | |
1863 | * above fix. It makes nasty clicking noises without | |
1864 | * it, so please don't remove this. | |
1865 | */ | |
1866 | if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { | |
1867 | blk_queue_max_sectors(drive->queue, 64); | |
1868 | set_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags); | |
1869 | } | |
1870 | ||
1871 | ||
1872 | (void) idefloppy_get_capacity(drive); | |
1873 | idefloppy_add_settings(drive); | |
1874 | } | |
1875 | ||
4031bbe4 | 1876 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
1877 | { |
1878 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1879 | struct gendisk *g = floppy->disk; | |
1880 | ||
7662d046 | 1881 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
1882 | |
1883 | del_gendisk(g); | |
1884 | ||
1885 | ide_floppy_put(floppy); | |
1da177e4 LT |
1886 | } |
1887 | ||
1888 | static void ide_floppy_release(struct kref *kref) | |
1889 | { | |
1890 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
1891 | ide_drive_t *drive = floppy->drive; | |
1892 | struct gendisk *g = floppy->disk; | |
1893 | ||
1894 | drive->driver_data = NULL; | |
1895 | g->private_data = NULL; | |
1896 | put_disk(g); | |
1897 | kfree(floppy); | |
1898 | } | |
1899 | ||
ecfd80e4 | 1900 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1901 | static int proc_idefloppy_read_capacity |
1902 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
1903 | { | |
1904 | ide_drive_t*drive = (ide_drive_t *)data; | |
1905 | int len; | |
1906 | ||
1907 | len = sprintf(page,"%llu\n", (long long)idefloppy_capacity(drive)); | |
1908 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
1909 | } | |
1910 | ||
1911 | static ide_proc_entry_t idefloppy_proc[] = { | |
1912 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, | |
1913 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1914 | { NULL, 0, NULL, NULL } | |
1915 | }; | |
ecfd80e4 | 1916 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 1917 | |
4031bbe4 | 1918 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 1919 | |
1da177e4 | 1920 | static ide_driver_t idefloppy_driver = { |
8604affd | 1921 | .gen_driver = { |
4ef3b8f4 | 1922 | .owner = THIS_MODULE, |
8604affd BZ |
1923 | .name = "ide-floppy", |
1924 | .bus = &ide_bus_type, | |
8604affd | 1925 | }, |
4031bbe4 RK |
1926 | .probe = ide_floppy_probe, |
1927 | .remove = ide_floppy_remove, | |
1da177e4 LT |
1928 | .version = IDEFLOPPY_VERSION, |
1929 | .media = ide_floppy, | |
1da177e4 | 1930 | .supports_dsc_overlap = 0, |
1da177e4 LT |
1931 | .do_request = idefloppy_do_request, |
1932 | .end_request = idefloppy_do_end_request, | |
1933 | .error = __ide_error, | |
1934 | .abort = __ide_abort, | |
7662d046 | 1935 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1936 | .proc = idefloppy_proc, |
7662d046 | 1937 | #endif |
1da177e4 LT |
1938 | }; |
1939 | ||
1940 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
1941 | { | |
1942 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1943 | struct ide_floppy_obj *floppy; | |
1944 | ide_drive_t *drive; | |
1945 | idefloppy_pc_t pc; | |
1946 | int ret = 0; | |
1947 | ||
1948 | debug_log(KERN_INFO "Reached idefloppy_open\n"); | |
1949 | ||
1950 | if (!(floppy = ide_floppy_get(disk))) | |
1951 | return -ENXIO; | |
1952 | ||
1953 | drive = floppy->drive; | |
1954 | ||
c94964a4 | 1955 | floppy->openers++; |
1da177e4 | 1956 | |
c94964a4 | 1957 | if (floppy->openers == 1) { |
1da177e4 LT |
1958 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); |
1959 | /* Just in case */ | |
1960 | ||
1961 | idefloppy_create_test_unit_ready_cmd(&pc); | |
1962 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1963 | idefloppy_create_start_stop_cmd(&pc, 1); | |
1964 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1965 | } | |
1966 | ||
1967 | if (idefloppy_get_capacity (drive) | |
1968 | && (filp->f_flags & O_NDELAY) == 0 | |
1969 | /* | |
1970 | ** Allow O_NDELAY to open a drive without a disk, or with | |
1971 | ** an unreadable disk, so that we can get the format | |
1972 | ** capacity of the drive or begin the format - Sam | |
1973 | */ | |
1974 | ) { | |
1da177e4 LT |
1975 | ret = -EIO; |
1976 | goto out_put_floppy; | |
1977 | } | |
1978 | ||
1979 | if (floppy->wp && (filp->f_mode & 2)) { | |
1da177e4 LT |
1980 | ret = -EROFS; |
1981 | goto out_put_floppy; | |
1982 | } | |
1983 | set_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); | |
1984 | /* IOMEGA Clik! drives do not support lock/unlock commands */ | |
1985 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
1986 | idefloppy_create_prevent_cmd(&pc, 1); | |
1987 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1988 | } | |
1989 | check_disk_change(inode->i_bdev); | |
1990 | } else if (test_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags)) { | |
1da177e4 LT |
1991 | ret = -EBUSY; |
1992 | goto out_put_floppy; | |
1993 | } | |
1994 | return 0; | |
1995 | ||
1996 | out_put_floppy: | |
c94964a4 | 1997 | floppy->openers--; |
1da177e4 LT |
1998 | ide_floppy_put(floppy); |
1999 | return ret; | |
2000 | } | |
2001 | ||
2002 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
2003 | { | |
2004 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
2005 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
2006 | ide_drive_t *drive = floppy->drive; | |
2007 | idefloppy_pc_t pc; | |
2008 | ||
2009 | debug_log(KERN_INFO "Reached idefloppy_release\n"); | |
2010 | ||
c94964a4 | 2011 | if (floppy->openers == 1) { |
1da177e4 LT |
2012 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
2013 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
2014 | idefloppy_create_prevent_cmd(&pc, 0); | |
2015 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
2016 | } | |
2017 | ||
2018 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
2019 | } | |
c94964a4 BZ |
2020 | |
2021 | floppy->openers--; | |
1da177e4 LT |
2022 | |
2023 | ide_floppy_put(floppy); | |
2024 | ||
2025 | return 0; | |
2026 | } | |
2027 | ||
a885c8c4 CH |
2028 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
2029 | { | |
2030 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
2031 | ide_drive_t *drive = floppy->drive; | |
2032 | ||
2033 | geo->heads = drive->bios_head; | |
2034 | geo->sectors = drive->bios_sect; | |
2035 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
2036 | return 0; | |
2037 | } | |
2038 | ||
1da177e4 LT |
2039 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
2040 | unsigned int cmd, unsigned long arg) | |
2041 | { | |
2042 | struct block_device *bdev = inode->i_bdev; | |
2043 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
2044 | ide_drive_t *drive = floppy->drive; | |
2045 | void __user *argp = (void __user *)arg; | |
07203f64 | 2046 | int err; |
1da177e4 LT |
2047 | int prevent = (arg) ? 1 : 0; |
2048 | idefloppy_pc_t pc; | |
1da177e4 LT |
2049 | |
2050 | switch (cmd) { | |
2051 | case CDROMEJECT: | |
2052 | prevent = 0; | |
2053 | /* fall through */ | |
2054 | case CDROM_LOCKDOOR: | |
c94964a4 | 2055 | if (floppy->openers > 1) |
1da177e4 LT |
2056 | return -EBUSY; |
2057 | ||
2058 | /* The IOMEGA Clik! Drive doesn't support this command - no room for an eject mechanism */ | |
2059 | if (!test_bit(IDEFLOPPY_CLIK_DRIVE, &floppy->flags)) { | |
2060 | idefloppy_create_prevent_cmd(&pc, prevent); | |
2061 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
2062 | } | |
2063 | if (cmd == CDROMEJECT) { | |
2064 | idefloppy_create_start_stop_cmd(&pc, 2); | |
2065 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
2066 | } | |
2067 | return 0; | |
2068 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: | |
2069 | return 0; | |
2070 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
2071 | return idefloppy_get_format_capacities(drive, argp); | |
2072 | case IDEFLOPPY_IOCTL_FORMAT_START: | |
2073 | ||
2074 | if (!(file->f_mode & 2)) | |
2075 | return -EPERM; | |
2076 | ||
c94964a4 | 2077 | if (floppy->openers > 1) { |
1da177e4 LT |
2078 | /* Don't format if someone is using the disk */ |
2079 | ||
2080 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, | |
2081 | &floppy->flags); | |
2082 | return -EBUSY; | |
2083 | } | |
2084 | ||
2085 | set_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
2086 | ||
2087 | err = idefloppy_begin_format(drive, argp); | |
2088 | if (err) | |
2089 | clear_bit(IDEFLOPPY_FORMAT_IN_PROGRESS, &floppy->flags); | |
2090 | return err; | |
2091 | /* | |
2092 | ** Note, the bit will be cleared when the device is | |
2093 | ** closed. This is the cleanest way to handle the | |
2094 | ** situation where the drive does not support | |
2095 | ** format progress reporting. | |
2096 | */ | |
2097 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: | |
2098 | return idefloppy_get_format_progress(drive, argp); | |
2099 | } | |
89636af2 BZ |
2100 | |
2101 | /* | |
2102 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
2103 | * and CDROM_SEND_PACKET (legacy) ioctls | |
2104 | */ | |
2105 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
2106 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
2107 | bdev->bd_disk, cmd, argp); | |
2108 | else | |
2109 | err = -ENOTTY; | |
2110 | ||
2111 | if (err == -ENOTTY) | |
2112 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
2113 | ||
2114 | return err; | |
1da177e4 LT |
2115 | } |
2116 | ||
2117 | static int idefloppy_media_changed(struct gendisk *disk) | |
2118 | { | |
2119 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
2120 | ide_drive_t *drive = floppy->drive; | |
2121 | ||
2122 | /* do not scan partitions twice if this is a removable device */ | |
2123 | if (drive->attach) { | |
2124 | drive->attach = 0; | |
2125 | return 0; | |
2126 | } | |
2127 | return test_and_clear_bit(IDEFLOPPY_MEDIA_CHANGED, &floppy->flags); | |
2128 | } | |
2129 | ||
2130 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
2131 | { | |
2132 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
2133 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
2134 | return 0; | |
2135 | } | |
2136 | ||
2137 | static struct block_device_operations idefloppy_ops = { | |
2138 | .owner = THIS_MODULE, | |
2139 | .open = idefloppy_open, | |
2140 | .release = idefloppy_release, | |
2141 | .ioctl = idefloppy_ioctl, | |
a885c8c4 | 2142 | .getgeo = idefloppy_getgeo, |
1da177e4 LT |
2143 | .media_changed = idefloppy_media_changed, |
2144 | .revalidate_disk= idefloppy_revalidate_disk | |
2145 | }; | |
2146 | ||
4031bbe4 | 2147 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
2148 | { |
2149 | idefloppy_floppy_t *floppy; | |
2150 | struct gendisk *g; | |
2151 | ||
2152 | if (!strstr("ide-floppy", drive->driver_req)) | |
2153 | goto failed; | |
2154 | if (!drive->present) | |
2155 | goto failed; | |
2156 | if (drive->media != ide_floppy) | |
2157 | goto failed; | |
2158 | if (!idefloppy_identify_device (drive, drive->id)) { | |
2159 | printk (KERN_ERR "ide-floppy: %s: not supported by this version of ide-floppy\n", drive->name); | |
2160 | goto failed; | |
2161 | } | |
2162 | if (drive->scsi) { | |
2163 | printk("ide-floppy: passing drive %s to ide-scsi emulation.\n", drive->name); | |
2164 | goto failed; | |
2165 | } | |
5cbded58 | 2166 | if ((floppy = kzalloc(sizeof (idefloppy_floppy_t), GFP_KERNEL)) == NULL) { |
1da177e4 LT |
2167 | printk (KERN_ERR "ide-floppy: %s: Can't allocate a floppy structure\n", drive->name); |
2168 | goto failed; | |
2169 | } | |
2170 | ||
2171 | g = alloc_disk(1 << PARTN_BITS); | |
2172 | if (!g) | |
2173 | goto out_free_floppy; | |
2174 | ||
2175 | ide_init_disk(g, drive); | |
2176 | ||
7662d046 | 2177 | ide_proc_register_driver(drive, &idefloppy_driver); |
1da177e4 | 2178 | |
1da177e4 LT |
2179 | kref_init(&floppy->kref); |
2180 | ||
2181 | floppy->drive = drive; | |
2182 | floppy->driver = &idefloppy_driver; | |
2183 | floppy->disk = g; | |
2184 | ||
2185 | g->private_data = &floppy->driver; | |
2186 | ||
2187 | drive->driver_data = floppy; | |
2188 | ||
1da177e4 | 2189 | idefloppy_setup (drive, floppy); |
8604affd | 2190 | |
1da177e4 LT |
2191 | g->minors = 1 << PARTN_BITS; |
2192 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
2193 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
2194 | g->fops = &idefloppy_ops; | |
2195 | drive->attach = 1; | |
2196 | add_disk(g); | |
2197 | return 0; | |
2198 | ||
1da177e4 LT |
2199 | out_free_floppy: |
2200 | kfree(floppy); | |
2201 | failed: | |
8604affd | 2202 | return -ENODEV; |
1da177e4 LT |
2203 | } |
2204 | ||
2205 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); | |
2206 | ||
2207 | static void __exit idefloppy_exit (void) | |
2208 | { | |
8604affd | 2209 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
2210 | } |
2211 | ||
17514e8a | 2212 | static int __init idefloppy_init(void) |
1da177e4 LT |
2213 | { |
2214 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 2215 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
2216 | } |
2217 | ||
263756ec | 2218 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
2219 | module_init(idefloppy_init); |
2220 | module_exit(idefloppy_exit); | |
2221 | MODULE_LICENSE("GPL"); |