Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
d3f20848 BP |
2 | * IDE ATAPI floppy driver. |
3 | * | |
59bca8cc BZ |
4 | * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> |
5 | * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> | |
6 | * Copyright (C) 2005 Bartlomiej Zolnierkiewicz | |
0571c7a4 | 7 | * |
1da177e4 LT |
8 | * The driver currently doesn't have any fancy features, just the bare |
9 | * minimum read/write support. | |
10 | * | |
11 | * This driver supports the following IDE floppy drives: | |
12 | * | |
13 | * LS-120/240 SuperDisk | |
14 | * Iomega Zip 100/250 | |
15 | * Iomega PC Card Clik!/PocketZip | |
16 | * | |
d3f20848 BP |
17 | * For a historical changelog see |
18 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 | |
1da177e4 LT |
19 | */ |
20 | ||
21 | #define IDEFLOPPY_VERSION "0.99.newide" | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/types.h> | |
25 | #include <linux/string.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/timer.h> | |
29 | #include <linux/mm.h> | |
30 | #include <linux/interrupt.h> | |
31 | #include <linux/major.h> | |
32 | #include <linux/errno.h> | |
33 | #include <linux/genhd.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/cdrom.h> | |
36 | #include <linux/ide.h> | |
37 | #include <linux/bitops.h> | |
cf8b8975 | 38 | #include <linux/mutex.h> |
1da177e4 | 39 | |
89636af2 BZ |
40 | #include <scsi/scsi_ioctl.h> |
41 | ||
1da177e4 | 42 | #include <asm/byteorder.h> |
7e8b163b BP |
43 | #include <linux/irq.h> |
44 | #include <linux/uaccess.h> | |
45 | #include <linux/io.h> | |
1da177e4 LT |
46 | #include <asm/unaligned.h> |
47 | ||
f373bd82 | 48 | /* define to see debug info */ |
1da177e4 | 49 | #define IDEFLOPPY_DEBUG_LOG 0 |
1da177e4 LT |
50 | |
51 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ | |
0571c7a4 | 52 | #define IDEFLOPPY_DEBUG(fmt, args...) |
1da177e4 LT |
53 | |
54 | #if IDEFLOPPY_DEBUG_LOG | |
bcc77d9c BP |
55 | #define debug_log(fmt, args...) \ |
56 | printk(KERN_INFO "ide-floppy: " fmt, ## args) | |
1da177e4 | 57 | #else |
0571c7a4 | 58 | #define debug_log(fmt, args...) do {} while (0) |
1da177e4 LT |
59 | #endif |
60 | ||
61 | ||
0571c7a4 | 62 | /* Some drives require a longer irq timeout. */ |
1da177e4 LT |
63 | #define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD) |
64 | ||
65 | /* | |
0571c7a4 BP |
66 | * After each failed packet command we issue a request sense command and retry |
67 | * the packet command IDEFLOPPY_MAX_PC_RETRIES times. | |
1da177e4 LT |
68 | */ |
69 | #define IDEFLOPPY_MAX_PC_RETRIES 3 | |
70 | ||
71 | /* | |
0571c7a4 BP |
72 | * With each packet command, we allocate a buffer of IDEFLOPPY_PC_BUFFER_SIZE |
73 | * bytes. | |
1da177e4 LT |
74 | */ |
75 | #define IDEFLOPPY_PC_BUFFER_SIZE 256 | |
76 | ||
77 | /* | |
0571c7a4 BP |
78 | * In various places in the driver, we need to allocate storage for packet |
79 | * commands and requests, which will remain valid while we leave the driver to | |
80 | * wait for an interrupt or a timeout event. | |
1da177e4 LT |
81 | */ |
82 | #define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES) | |
83 | ||
1da177e4 LT |
84 | typedef struct idefloppy_packet_command_s { |
85 | u8 c[12]; /* Actual packet bytes */ | |
0571c7a4 BP |
86 | int retries; /* On each retry, we increment |
87 | retries */ | |
1da177e4 LT |
88 | int error; /* Error code */ |
89 | int request_transfer; /* Bytes to transfer */ | |
90 | int actually_transferred; /* Bytes actually transferred */ | |
91 | int buffer_size; /* Size of our data buffer */ | |
0571c7a4 BP |
92 | int b_count; /* Missing/Available data on |
93 | the current buffer */ | |
1da177e4 LT |
94 | struct request *rq; /* The corresponding request */ |
95 | u8 *buffer; /* Data buffer */ | |
0571c7a4 BP |
96 | u8 *current_position; /* Pointer into above buffer */ |
97 | void (*callback) (ide_drive_t *); /* Called when this packet | |
98 | command is completed */ | |
1da177e4 | 99 | u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */ |
0571c7a4 BP |
100 | unsigned long flags; /* Status/Action bit flags: long |
101 | for set_bit */ | |
1da177e4 LT |
102 | } idefloppy_pc_t; |
103 | ||
6e5fa7b8 BP |
104 | /* Packet command flag bits. */ |
105 | enum { | |
106 | /* 1 when we prefer to use DMA if possible */ | |
107 | PC_FLAG_DMA_RECOMMENDED = (1 << 0), | |
108 | /* 1 while DMA in progress */ | |
109 | PC_FLAG_DMA_IN_PROGRESS = (1 << 1), | |
110 | /* 1 when encountered problem during DMA */ | |
111 | PC_FLAG_DMA_ERROR = (1 << 2), | |
112 | /* Data direction */ | |
113 | PC_FLAG_WRITING = (1 << 3), | |
114 | /* Suppress error reporting */ | |
115 | PC_FLAG_SUPPRESS_ERROR = (1 << 4), | |
116 | }; | |
1da177e4 | 117 | |
194ec0c0 | 118 | /* format capacities descriptor codes */ |
1da177e4 LT |
119 | #define CAPACITY_INVALID 0x00 |
120 | #define CAPACITY_UNFORMATTED 0x01 | |
121 | #define CAPACITY_CURRENT 0x02 | |
122 | #define CAPACITY_NO_CARTRIDGE 0x03 | |
123 | ||
124 | /* | |
0571c7a4 BP |
125 | * Most of our global data which we need to save even as we leave the driver |
126 | * due to an interrupt or a timer event is stored in a variable of type | |
127 | * idefloppy_floppy_t, defined below. | |
1da177e4 LT |
128 | */ |
129 | typedef struct ide_floppy_obj { | |
130 | ide_drive_t *drive; | |
131 | ide_driver_t *driver; | |
132 | struct gendisk *disk; | |
133 | struct kref kref; | |
c94964a4 | 134 | unsigned int openers; /* protected by BKL for now */ |
1da177e4 LT |
135 | |
136 | /* Current packet command */ | |
137 | idefloppy_pc_t *pc; | |
138 | /* Last failed packet command */ | |
139 | idefloppy_pc_t *failed_pc; | |
140 | /* Packet command stack */ | |
141 | idefloppy_pc_t pc_stack[IDEFLOPPY_PC_STACK]; | |
142 | /* Next free packet command storage space */ | |
143 | int pc_stack_index; | |
144 | struct request rq_stack[IDEFLOPPY_PC_STACK]; | |
145 | /* We implement a circular array */ | |
146 | int rq_stack_index; | |
147 | ||
0571c7a4 | 148 | /* Last error information */ |
1da177e4 LT |
149 | u8 sense_key, asc, ascq; |
150 | /* delay this long before sending packet command */ | |
151 | u8 ticks; | |
152 | int progress_indication; | |
153 | ||
0571c7a4 | 154 | /* Device information */ |
1da177e4 LT |
155 | /* Current format */ |
156 | int blocks, block_size, bs_factor; | |
194ec0c0 BP |
157 | /* Last format capacity descriptor */ |
158 | u8 cap_desc[8]; | |
1da177e4 | 159 | /* Copy of the flexible disk page */ |
8e81bbba | 160 | u8 flexible_disk_page[32]; |
1da177e4 LT |
161 | /* Write protect */ |
162 | int wp; | |
163 | /* Supports format progress report */ | |
164 | int srfp; | |
165 | /* Status/Action flags */ | |
166 | unsigned long flags; | |
167 | } idefloppy_floppy_t; | |
168 | ||
c40d3d38 | 169 | #define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */ |
1da177e4 | 170 | |
6e5fa7b8 BP |
171 | /* Floppy flag bits values. */ |
172 | enum { | |
173 | /* DRQ interrupt device */ | |
174 | IDEFLOPPY_FLAG_DRQ_INTERRUPT = (1 << 0), | |
175 | /* Media may have changed */ | |
176 | IDEFLOPPY_FLAG_MEDIA_CHANGED = (1 << 1), | |
177 | /* Format in progress */ | |
178 | IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS = (1 << 2), | |
179 | /* Avoid commands not supported in Clik drive */ | |
180 | IDEFLOPPY_FLAG_CLIK_DRIVE = (1 << 3), | |
181 | /* Requires BH algorithm for packets */ | |
182 | IDEFLOPPY_FLAG_ZIP_DRIVE = (1 << 4), | |
183 | }; | |
1da177e4 | 184 | |
0571c7a4 | 185 | /* Defines for the MODE SENSE command */ |
1da177e4 LT |
186 | #define MODE_SENSE_CURRENT 0x00 |
187 | #define MODE_SENSE_CHANGEABLE 0x01 | |
0571c7a4 | 188 | #define MODE_SENSE_DEFAULT 0x02 |
1da177e4 LT |
189 | #define MODE_SENSE_SAVED 0x03 |
190 | ||
0571c7a4 | 191 | /* IOCTLs used in low-level formatting. */ |
1da177e4 LT |
192 | #define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600 |
193 | #define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601 | |
194 | #define IDEFLOPPY_IOCTL_FORMAT_START 0x4602 | |
195 | #define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603 | |
196 | ||
0571c7a4 | 197 | /* Error code returned in rq->errors to the higher part of the driver. */ |
1da177e4 LT |
198 | #define IDEFLOPPY_ERROR_GENERAL 101 |
199 | ||
200 | /* | |
0571c7a4 BP |
201 | * The following is used to format the general configuration word of the |
202 | * ATAPI IDENTIFY DEVICE command. | |
1da177e4 | 203 | */ |
0571c7a4 | 204 | struct idefloppy_id_gcw { |
1da177e4 LT |
205 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
206 | unsigned packet_size :2; /* Packet Size */ | |
207 | unsigned reserved234 :3; /* Reserved */ | |
208 | unsigned drq_type :2; /* Command packet DRQ type */ | |
209 | unsigned removable :1; /* Removable media */ | |
210 | unsigned device_type :5; /* Device type */ | |
211 | unsigned reserved13 :1; /* Reserved */ | |
212 | unsigned protocol :2; /* Protocol type */ | |
213 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
214 | unsigned protocol :2; /* Protocol type */ | |
215 | unsigned reserved13 :1; /* Reserved */ | |
216 | unsigned device_type :5; /* Device type */ | |
217 | unsigned removable :1; /* Removable media */ | |
218 | unsigned drq_type :2; /* Command packet DRQ type */ | |
219 | unsigned reserved234 :3; /* Reserved */ | |
220 | unsigned packet_size :2; /* Packet Size */ | |
221 | #else | |
222 | #error "Bitfield endianness not defined! Check your byteorder.h" | |
223 | #endif | |
224 | }; | |
225 | ||
1da177e4 | 226 | /* |
948391d1 BP |
227 | * Pages of the SELECT SENSE / MODE SENSE packet commands. |
228 | * See SFF-8070i spec. | |
1da177e4 LT |
229 | */ |
230 | #define IDEFLOPPY_CAPABILITIES_PAGE 0x1b | |
231 | #define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05 | |
232 | ||
cf8b8975 | 233 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
1da177e4 LT |
234 | |
235 | #define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref) | |
236 | ||
237 | #define ide_floppy_g(disk) \ | |
238 | container_of((disk)->private_data, struct ide_floppy_obj, driver) | |
239 | ||
240 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) | |
241 | { | |
242 | struct ide_floppy_obj *floppy = NULL; | |
243 | ||
cf8b8975 | 244 | mutex_lock(&idefloppy_ref_mutex); |
1da177e4 LT |
245 | floppy = ide_floppy_g(disk); |
246 | if (floppy) | |
247 | kref_get(&floppy->kref); | |
cf8b8975 | 248 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
249 | return floppy; |
250 | } | |
251 | ||
9a24b63d | 252 | static void idefloppy_cleanup_obj(struct kref *); |
1da177e4 LT |
253 | |
254 | static void ide_floppy_put(struct ide_floppy_obj *floppy) | |
255 | { | |
cf8b8975 | 256 | mutex_lock(&idefloppy_ref_mutex); |
9a24b63d | 257 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
cf8b8975 | 258 | mutex_unlock(&idefloppy_ref_mutex); |
1da177e4 LT |
259 | } |
260 | ||
261 | /* | |
0571c7a4 BP |
262 | * Too bad. The drive wants to send us data which we are not ready to accept. |
263 | * Just throw it away. | |
1da177e4 | 264 | */ |
0571c7a4 | 265 | static void idefloppy_discard_data(ide_drive_t *drive, unsigned int bcount) |
1da177e4 LT |
266 | { |
267 | while (bcount--) | |
268 | (void) HWIF(drive)->INB(IDE_DATA_REG); | |
269 | } | |
270 | ||
0bf399e6 | 271 | static void idefloppy_write_zeros(ide_drive_t *drive, unsigned int bcount) |
1da177e4 LT |
272 | { |
273 | while (bcount--) | |
274 | HWIF(drive)->OUTB(0, IDE_DATA_REG); | |
275 | } | |
1da177e4 LT |
276 | |
277 | ||
278 | /* | |
0571c7a4 BP |
279 | * Used to finish servicing a request. For read/write requests, we will call |
280 | * ide_end_request to pass to the next buffer. | |
1da177e4 LT |
281 | */ |
282 | static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs) | |
283 | { | |
284 | idefloppy_floppy_t *floppy = drive->driver_data; | |
285 | struct request *rq = HWGROUP(drive)->rq; | |
286 | int error; | |
287 | ||
bcc77d9c | 288 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
289 | |
290 | switch (uptodate) { | |
0571c7a4 BP |
291 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
292 | case 1: error = 0; break; | |
293 | default: error = uptodate; | |
1da177e4 LT |
294 | } |
295 | if (error) | |
296 | floppy->failed_pc = NULL; | |
297 | /* Why does this happen? */ | |
298 | if (!rq) | |
299 | return 0; | |
4aff5e23 | 300 | if (!blk_special_request(rq)) { |
1da177e4 LT |
301 | /* our real local end request function */ |
302 | ide_end_request(drive, uptodate, nsecs); | |
303 | return 0; | |
304 | } | |
305 | rq->errors = error; | |
306 | /* fixme: need to move this local also */ | |
307 | ide_end_drive_cmd(drive, 0, 0); | |
308 | return 0; | |
309 | } | |
310 | ||
32925e1a BP |
311 | static void ide_floppy_io_buffers(ide_drive_t *drive, idefloppy_pc_t *pc, |
312 | unsigned int bcount, int direction) | |
1da177e4 LT |
313 | { |
314 | struct request *rq = pc->rq; | |
5705f702 | 315 | struct req_iterator iter; |
1da177e4 LT |
316 | struct bio_vec *bvec; |
317 | unsigned long flags; | |
5705f702 | 318 | int count, done = 0; |
1da177e4 LT |
319 | char *data; |
320 | ||
5705f702 | 321 | rq_for_each_segment(bvec, rq, iter) { |
6c92e699 JA |
322 | if (!bcount) |
323 | break; | |
1da177e4 | 324 | |
6c92e699 | 325 | count = min(bvec->bv_len, bcount); |
1da177e4 | 326 | |
6c92e699 | 327 | data = bvec_kmap_irq(bvec, &flags); |
32925e1a BP |
328 | if (direction) |
329 | drive->hwif->atapi_output_bytes(drive, data, count); | |
330 | else | |
331 | drive->hwif->atapi_input_bytes(drive, data, count); | |
6c92e699 | 332 | bvec_kunmap_irq(data, &flags); |
1da177e4 | 333 | |
6c92e699 JA |
334 | bcount -= count; |
335 | pc->b_count += count; | |
336 | done += count; | |
1da177e4 LT |
337 | } |
338 | ||
339 | idefloppy_do_end_request(drive, 1, done >> 9); | |
340 | ||
341 | if (bcount) { | |
32925e1a BP |
342 | printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n", |
343 | drive->name, __func__, bcount); | |
344 | if (direction) | |
345 | idefloppy_write_zeros(drive, bcount); | |
346 | else | |
347 | idefloppy_discard_data(drive, bcount); | |
348 | ||
1da177e4 LT |
349 | } |
350 | } | |
351 | ||
0571c7a4 | 352 | static void idefloppy_update_buffers(ide_drive_t *drive, idefloppy_pc_t *pc) |
1da177e4 LT |
353 | { |
354 | struct request *rq = pc->rq; | |
355 | struct bio *bio = rq->bio; | |
356 | ||
357 | while ((bio = rq->bio) != NULL) | |
358 | idefloppy_do_end_request(drive, 1, 0); | |
359 | } | |
360 | ||
361 | /* | |
0571c7a4 BP |
362 | * Generate a new packet command request in front of the request queue, before |
363 | * the current request so that it will be processed immediately, on the next | |
364 | * pass through the driver. | |
1da177e4 | 365 | */ |
0571c7a4 BP |
366 | static void idefloppy_queue_pc_head(ide_drive_t *drive, idefloppy_pc_t *pc, |
367 | struct request *rq) | |
1da177e4 LT |
368 | { |
369 | struct ide_floppy_obj *floppy = drive->driver_data; | |
370 | ||
371 | ide_init_drive_cmd(rq); | |
372 | rq->buffer = (char *) pc; | |
4aff5e23 | 373 | rq->cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
374 | rq->rq_disk = floppy->disk; |
375 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
376 | } | |
377 | ||
0571c7a4 | 378 | static idefloppy_pc_t *idefloppy_next_pc_storage(ide_drive_t *drive) |
1da177e4 LT |
379 | { |
380 | idefloppy_floppy_t *floppy = drive->driver_data; | |
381 | ||
382 | if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK) | |
0571c7a4 | 383 | floppy->pc_stack_index = 0; |
1da177e4 LT |
384 | return (&floppy->pc_stack[floppy->pc_stack_index++]); |
385 | } | |
386 | ||
0571c7a4 | 387 | static struct request *idefloppy_next_rq_storage(ide_drive_t *drive) |
1da177e4 LT |
388 | { |
389 | idefloppy_floppy_t *floppy = drive->driver_data; | |
390 | ||
391 | if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK) | |
392 | floppy->rq_stack_index = 0; | |
393 | return (&floppy->rq_stack[floppy->rq_stack_index++]); | |
394 | } | |
395 | ||
a6ff2d3b | 396 | static void idefloppy_request_sense_callback(ide_drive_t *drive) |
1da177e4 LT |
397 | { |
398 | idefloppy_floppy_t *floppy = drive->driver_data; | |
a6ff2d3b | 399 | u8 *buf = floppy->pc->buffer; |
1da177e4 | 400 | |
bcc77d9c BP |
401 | debug_log("Reached %s\n", __func__); |
402 | ||
1da177e4 | 403 | if (!floppy->pc->error) { |
a6ff2d3b BP |
404 | floppy->sense_key = buf[2] & 0x0F; |
405 | floppy->asc = buf[12]; | |
406 | floppy->ascq = buf[13]; | |
407 | floppy->progress_indication = buf[15] & 0x80 ? | |
408 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; | |
409 | ||
410 | if (floppy->failed_pc) | |
411 | debug_log("pc = %x, sense key = %x, asc = %x," | |
412 | " ascq = %x\n", | |
413 | floppy->failed_pc->c[0], | |
414 | floppy->sense_key, | |
415 | floppy->asc, | |
416 | floppy->ascq); | |
417 | else | |
418 | debug_log("sense key = %x, asc = %x, ascq = %x\n", | |
419 | floppy->sense_key, | |
420 | floppy->asc, | |
421 | floppy->ascq); | |
422 | ||
423 | ||
1da177e4 LT |
424 | idefloppy_do_end_request(drive, 1, 0); |
425 | } else { | |
a6ff2d3b BP |
426 | printk(KERN_ERR "Error in REQUEST SENSE itself - Aborting" |
427 | " request!\n"); | |
1da177e4 LT |
428 | idefloppy_do_end_request(drive, 0, 0); |
429 | } | |
430 | } | |
431 | ||
0571c7a4 BP |
432 | /* General packet command callback function. */ |
433 | static void idefloppy_pc_callback(ide_drive_t *drive) | |
1da177e4 LT |
434 | { |
435 | idefloppy_floppy_t *floppy = drive->driver_data; | |
bcc77d9c BP |
436 | |
437 | debug_log("Reached %s\n", __func__); | |
1da177e4 LT |
438 | |
439 | idefloppy_do_end_request(drive, floppy->pc->error ? 0 : 1, 0); | |
440 | } | |
441 | ||
0571c7a4 | 442 | static void idefloppy_init_pc(idefloppy_pc_t *pc) |
1da177e4 LT |
443 | { |
444 | memset(pc->c, 0, 12); | |
445 | pc->retries = 0; | |
446 | pc->flags = 0; | |
447 | pc->request_transfer = 0; | |
448 | pc->buffer = pc->pc_buffer; | |
449 | pc->buffer_size = IDEFLOPPY_PC_BUFFER_SIZE; | |
450 | pc->callback = &idefloppy_pc_callback; | |
451 | } | |
452 | ||
0571c7a4 | 453 | static void idefloppy_create_request_sense_cmd(idefloppy_pc_t *pc) |
1da177e4 | 454 | { |
30d67099 BP |
455 | idefloppy_init_pc(pc); |
456 | pc->c[0] = GPCMD_REQUEST_SENSE; | |
1da177e4 LT |
457 | pc->c[4] = 255; |
458 | pc->request_transfer = 18; | |
459 | pc->callback = &idefloppy_request_sense_callback; | |
460 | } | |
461 | ||
462 | /* | |
0571c7a4 BP |
463 | * Called when an error was detected during the last packet command. We queue a |
464 | * request sense packet command in the head of the request list. | |
1da177e4 | 465 | */ |
0571c7a4 | 466 | static void idefloppy_retry_pc(ide_drive_t *drive) |
1da177e4 LT |
467 | { |
468 | idefloppy_pc_t *pc; | |
469 | struct request *rq; | |
1da177e4 | 470 | |
0e38a66a | 471 | (void)drive->hwif->INB(IDE_ERROR_REG); |
1da177e4 LT |
472 | pc = idefloppy_next_pc_storage(drive); |
473 | rq = idefloppy_next_rq_storage(drive); | |
474 | idefloppy_create_request_sense_cmd(pc); | |
475 | idefloppy_queue_pc_head(drive, pc, rq); | |
476 | } | |
477 | ||
0eea6458 | 478 | /* The usual interrupt handler called during a packet command. */ |
1da177e4 LT |
479 | static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive) |
480 | { | |
481 | idefloppy_floppy_t *floppy = drive->driver_data; | |
790d1239 | 482 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
483 | idefloppy_pc_t *pc = floppy->pc; |
484 | struct request *rq = pc->rq; | |
0eea6458 | 485 | xfer_func_t *xferfunc; |
1da177e4 | 486 | unsigned int temp; |
d30a7fba | 487 | int dma_error = 0; |
790d1239 | 488 | u16 bcount; |
8e7657ae | 489 | u8 stat, ireason; |
1da177e4 | 490 | |
bcc77d9c | 491 | debug_log("Reached %s interrupt handler\n", __func__); |
1da177e4 | 492 | |
6e5fa7b8 | 493 | if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { |
d30a7fba BP |
494 | dma_error = hwif->ide_dma_end(drive); |
495 | if (dma_error) { | |
496 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
497 | rq_data_dir(rq) ? "write" : "read"); | |
6e5fa7b8 | 498 | pc->flags |= PC_FLAG_DMA_ERROR; |
1da177e4 LT |
499 | } else { |
500 | pc->actually_transferred = pc->request_transfer; | |
501 | idefloppy_update_buffers(drive, pc); | |
502 | } | |
bcc77d9c | 503 | debug_log("DMA finished\n"); |
1da177e4 LT |
504 | } |
505 | ||
506 | /* Clear the interrupt */ | |
22c525b9 | 507 | stat = drive->hwif->INB(IDE_STATUS_REG); |
1da177e4 | 508 | |
0571c7a4 BP |
509 | /* No more interrupts */ |
510 | if ((stat & DRQ_STAT) == 0) { | |
bcc77d9c BP |
511 | debug_log("Packet command completed, %d bytes transferred\n", |
512 | pc->actually_transferred); | |
6e5fa7b8 | 513 | pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; |
1da177e4 | 514 | |
366c7f55 | 515 | local_irq_enable_in_hardirq(); |
1da177e4 | 516 | |
6e5fa7b8 | 517 | if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) { |
1da177e4 | 518 | /* Error detected */ |
bcc77d9c | 519 | debug_log("%s: I/O error\n", drive->name); |
1da177e4 | 520 | rq->errors++; |
30d67099 | 521 | if (pc->c[0] == GPCMD_REQUEST_SENSE) { |
1da177e4 LT |
522 | printk(KERN_ERR "ide-floppy: I/O error in " |
523 | "request sense command\n"); | |
524 | return ide_do_reset(drive); | |
525 | } | |
526 | /* Retry operation */ | |
527 | idefloppy_retry_pc(drive); | |
528 | /* queued, but not started */ | |
529 | return ide_stopped; | |
530 | } | |
531 | pc->error = 0; | |
532 | if (floppy->failed_pc == pc) | |
533 | floppy->failed_pc = NULL; | |
534 | /* Command finished - Call the callback function */ | |
535 | pc->callback(drive); | |
536 | return ide_stopped; | |
537 | } | |
538 | ||
6e5fa7b8 BP |
539 | if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { |
540 | pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; | |
1da177e4 LT |
541 | printk(KERN_ERR "ide-floppy: The floppy wants to issue " |
542 | "more interrupts in DMA mode\n"); | |
7469aaf6 | 543 | ide_dma_off(drive); |
1da177e4 LT |
544 | return ide_do_reset(drive); |
545 | } | |
546 | ||
547 | /* Get the number of bytes to transfer */ | |
790d1239 BZ |
548 | bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) | |
549 | hwif->INB(IDE_BCOUNTL_REG); | |
1da177e4 | 550 | /* on this interrupt */ |
8e7657ae | 551 | ireason = hwif->INB(IDE_IREASON_REG); |
1da177e4 | 552 | |
8e7657ae | 553 | if (ireason & CD) { |
0eea6458 | 554 | printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__); |
1da177e4 LT |
555 | return ide_do_reset(drive); |
556 | } | |
6e5fa7b8 | 557 | if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) { |
1da177e4 LT |
558 | /* Hopefully, we will never get here */ |
559 | printk(KERN_ERR "ide-floppy: We wanted to %s, ", | |
8e7657ae | 560 | (ireason & IO) ? "Write" : "Read"); |
1da177e4 | 561 | printk(KERN_ERR "but the floppy wants us to %s !\n", |
8e7657ae | 562 | (ireason & IO) ? "Read" : "Write"); |
1da177e4 LT |
563 | return ide_do_reset(drive); |
564 | } | |
6e5fa7b8 | 565 | if (!(pc->flags & PC_FLAG_WRITING)) { |
1da177e4 | 566 | /* Reading - Check that we have enough space */ |
790d1239 | 567 | temp = pc->actually_transferred + bcount; |
1da177e4 LT |
568 | if (temp > pc->request_transfer) { |
569 | if (temp > pc->buffer_size) { | |
570 | printk(KERN_ERR "ide-floppy: The floppy wants " | |
571 | "to send us more data than expected " | |
572 | "- discarding data\n"); | |
790d1239 | 573 | idefloppy_discard_data(drive, bcount); |
0078df2e | 574 | |
1da177e4 LT |
575 | ide_set_handler(drive, |
576 | &idefloppy_pc_intr, | |
577 | IDEFLOPPY_WAIT_CMD, | |
578 | NULL); | |
579 | return ide_started; | |
580 | } | |
bcc77d9c BP |
581 | debug_log("The floppy wants to send us more data than" |
582 | " expected - allowing transfer\n"); | |
1da177e4 LT |
583 | } |
584 | } | |
6e5fa7b8 | 585 | if (pc->flags & PC_FLAG_WRITING) |
0eea6458 | 586 | xferfunc = hwif->atapi_output_bytes; |
32925e1a | 587 | else |
0eea6458 | 588 | xferfunc = hwif->atapi_input_bytes; |
0eea6458 BP |
589 | |
590 | if (pc->buffer) | |
591 | xferfunc(drive, pc->current_position, bcount); | |
592 | else | |
32925e1a | 593 | ide_floppy_io_buffers(drive, pc, bcount, |
6e5fa7b8 | 594 | !!(pc->flags & PC_FLAG_WRITING)); |
0eea6458 | 595 | |
1da177e4 | 596 | /* Update the current position */ |
790d1239 BZ |
597 | pc->actually_transferred += bcount; |
598 | pc->current_position += bcount; | |
1da177e4 | 599 | |
32925e1a BP |
600 | /* And set the interrupt handler again */ |
601 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
1da177e4 LT |
602 | return ide_started; |
603 | } | |
604 | ||
605 | /* | |
606 | * This is the original routine that did the packet transfer. | |
607 | * It fails at high speeds on the Iomega ZIP drive, so there's a slower version | |
608 | * for that drive below. The algorithm is chosen based on drive type | |
609 | */ | |
0571c7a4 | 610 | static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive) |
1da177e4 LT |
611 | { |
612 | ide_startstop_t startstop; | |
613 | idefloppy_floppy_t *floppy = drive->driver_data; | |
8e7657ae | 614 | u8 ireason; |
1da177e4 LT |
615 | |
616 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
617 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
618 | "initiated yet DRQ isn't asserted\n"); | |
619 | return startstop; | |
620 | } | |
8e7657ae BZ |
621 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
622 | if ((ireason & CD) == 0 || (ireason & IO)) { | |
1da177e4 LT |
623 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while " |
624 | "issuing a packet command\n"); | |
625 | return ide_do_reset(drive); | |
626 | } | |
0078df2e | 627 | |
1da177e4 LT |
628 | /* Set the interrupt routine */ |
629 | ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); | |
630 | /* Send the actual packet */ | |
631 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
632 | return ide_started; | |
633 | } | |
634 | ||
635 | ||
636 | /* | |
0571c7a4 BP |
637 | * What we have here is a classic case of a top half / bottom half interrupt |
638 | * service routine. In interrupt mode, the device sends an interrupt to signal | |
639 | * that it is ready to receive a packet. However, we need to delay about 2-3 | |
640 | * ticks before issuing the packet or we gets in trouble. | |
1da177e4 | 641 | * |
0571c7a4 BP |
642 | * So, follow carefully. transfer_pc1 is called as an interrupt (or directly). |
643 | * In either case, when the device says it's ready for a packet, we schedule | |
644 | * the packet transfer to occur about 2-3 ticks later in transfer_pc2. | |
1da177e4 | 645 | */ |
0571c7a4 | 646 | static int idefloppy_transfer_pc2(ide_drive_t *drive) |
1da177e4 LT |
647 | { |
648 | idefloppy_floppy_t *floppy = drive->driver_data; | |
649 | ||
650 | /* Send the actual packet */ | |
651 | HWIF(drive)->atapi_output_bytes(drive, floppy->pc->c, 12); | |
652 | /* Timeout for the packet command */ | |
653 | return IDEFLOPPY_WAIT_CMD; | |
654 | } | |
655 | ||
0571c7a4 | 656 | static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive) |
1da177e4 LT |
657 | { |
658 | idefloppy_floppy_t *floppy = drive->driver_data; | |
659 | ide_startstop_t startstop; | |
8e7657ae | 660 | u8 ireason; |
1da177e4 LT |
661 | |
662 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { | |
663 | printk(KERN_ERR "ide-floppy: Strange, packet command " | |
664 | "initiated yet DRQ isn't asserted\n"); | |
665 | return startstop; | |
666 | } | |
8e7657ae BZ |
667 | ireason = drive->hwif->INB(IDE_IREASON_REG); |
668 | if ((ireason & CD) == 0 || (ireason & IO)) { | |
1da177e4 LT |
669 | printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) " |
670 | "while issuing a packet command\n"); | |
671 | return ide_do_reset(drive); | |
672 | } | |
0571c7a4 | 673 | /* |
1da177e4 LT |
674 | * The following delay solves a problem with ATAPI Zip 100 drives |
675 | * where the Busy flag was apparently being deasserted before the | |
676 | * unit was ready to receive data. This was happening on a | |
677 | * 1200 MHz Athlon system. 10/26/01 25msec is too short, | |
678 | * 40 and 50msec work well. idefloppy_pc_intr will not be actually | |
679 | * used until after the packet is moved in about 50 msec. | |
680 | */ | |
0078df2e | 681 | |
0571c7a4 BP |
682 | ide_set_handler(drive, &idefloppy_pc_intr, floppy->ticks, |
683 | &idefloppy_transfer_pc2); | |
1da177e4 LT |
684 | return ide_started; |
685 | } | |
686 | ||
d652c138 BP |
687 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
688 | idefloppy_pc_t *pc) | |
1da177e4 | 689 | { |
d652c138 | 690 | /* supress error messages resulting from Medium not present */ |
1da177e4 LT |
691 | if (floppy->sense_key == 0x02 && |
692 | floppy->asc == 0x3a && | |
693 | floppy->ascq == 0x00) | |
d652c138 BP |
694 | return; |
695 | ||
696 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " | |
697 | "asc = %2x, ascq = %2x\n", | |
698 | floppy->drive->name, pc->c[0], floppy->sense_key, | |
699 | floppy->asc, floppy->ascq); | |
700 | ||
1da177e4 LT |
701 | } |
702 | ||
0571c7a4 BP |
703 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
704 | idefloppy_pc_t *pc) | |
1da177e4 LT |
705 | { |
706 | idefloppy_floppy_t *floppy = drive->driver_data; | |
707 | ide_hwif_t *hwif = drive->hwif; | |
1da177e4 | 708 | ide_handler_t *pkt_xfer_routine; |
790d1239 | 709 | u16 bcount; |
e5f9f5a8 | 710 | u8 dma; |
1da177e4 | 711 | |
1da177e4 | 712 | if (floppy->failed_pc == NULL && |
30d67099 | 713 | pc->c[0] != GPCMD_REQUEST_SENSE) |
1da177e4 LT |
714 | floppy->failed_pc = pc; |
715 | /* Set the current packet command */ | |
716 | floppy->pc = pc; | |
717 | ||
757ced89 | 718 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
6e5fa7b8 | 719 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
757ced89 BP |
720 | ide_floppy_report_error(floppy, pc); |
721 | /* Giving up */ | |
722 | pc->error = IDEFLOPPY_ERROR_GENERAL; | |
723 | ||
1da177e4 LT |
724 | floppy->failed_pc = NULL; |
725 | pc->callback(drive); | |
726 | return ide_stopped; | |
727 | } | |
728 | ||
bcc77d9c | 729 | debug_log("Retry number - %d\n", pc->retries); |
1da177e4 LT |
730 | |
731 | pc->retries++; | |
732 | /* We haven't transferred any data yet */ | |
733 | pc->actually_transferred = 0; | |
734 | pc->current_position = pc->buffer; | |
790d1239 | 735 | bcount = min(pc->request_transfer, 63 * 1024); |
1da177e4 | 736 | |
6e5fa7b8 BP |
737 | if (pc->flags & PC_FLAG_DMA_ERROR) { |
738 | pc->flags &= ~PC_FLAG_DMA_ERROR; | |
7469aaf6 | 739 | ide_dma_off(drive); |
6e5fa7b8 | 740 | } |
e5f9f5a8 | 741 | dma = 0; |
1da177e4 | 742 | |
6e5fa7b8 | 743 | if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma) |
e5f9f5a8 | 744 | dma = !hwif->dma_setup(drive); |
1da177e4 | 745 | |
2fc57388 BZ |
746 | ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK | |
747 | IDE_TFLAG_OUT_DEVICE, bcount, dma); | |
1da177e4 | 748 | |
0571c7a4 BP |
749 | if (dma) { |
750 | /* Begin DMA, if necessary */ | |
6e5fa7b8 | 751 | pc->flags |= PC_FLAG_DMA_IN_PROGRESS; |
1da177e4 LT |
752 | hwif->dma_start(drive); |
753 | } | |
754 | ||
755 | /* Can we transfer the packet when we get the interrupt or wait? */ | |
6e5fa7b8 | 756 | if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) { |
1da177e4 LT |
757 | /* wait */ |
758 | pkt_xfer_routine = &idefloppy_transfer_pc1; | |
759 | } else { | |
760 | /* immediate */ | |
761 | pkt_xfer_routine = &idefloppy_transfer_pc; | |
762 | } | |
763 | ||
6e5fa7b8 | 764 | if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) { |
1da177e4 LT |
765 | /* Issue the packet command */ |
766 | ide_execute_command(drive, WIN_PACKETCMD, | |
767 | pkt_xfer_routine, | |
768 | IDEFLOPPY_WAIT_CMD, | |
769 | NULL); | |
770 | return ide_started; | |
771 | } else { | |
772 | /* Issue the packet command */ | |
773 | HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG); | |
774 | return (*pkt_xfer_routine) (drive); | |
775 | } | |
776 | } | |
777 | ||
0571c7a4 | 778 | static void idefloppy_rw_callback(ide_drive_t *drive) |
1da177e4 | 779 | { |
bcc77d9c | 780 | debug_log("Reached %s\n", __func__); |
1da177e4 LT |
781 | |
782 | idefloppy_do_end_request(drive, 1, 0); | |
783 | return; | |
784 | } | |
785 | ||
0571c7a4 | 786 | static void idefloppy_create_prevent_cmd(idefloppy_pc_t *pc, int prevent) |
1da177e4 | 787 | { |
bcc77d9c | 788 | debug_log("creating prevent removal command, prevent = %d\n", prevent); |
1da177e4 LT |
789 | |
790 | idefloppy_init_pc(pc); | |
30d67099 | 791 | pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
1da177e4 LT |
792 | pc->c[4] = prevent; |
793 | } | |
794 | ||
0571c7a4 | 795 | static void idefloppy_create_read_capacity_cmd(idefloppy_pc_t *pc) |
1da177e4 LT |
796 | { |
797 | idefloppy_init_pc(pc); | |
30d67099 | 798 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
1da177e4 LT |
799 | pc->c[7] = 255; |
800 | pc->c[8] = 255; | |
801 | pc->request_transfer = 255; | |
802 | } | |
803 | ||
0571c7a4 | 804 | static void idefloppy_create_format_unit_cmd(idefloppy_pc_t *pc, int b, int l, |
1da177e4 LT |
805 | int flags) |
806 | { | |
807 | idefloppy_init_pc(pc); | |
30d67099 | 808 | pc->c[0] = GPCMD_FORMAT_UNIT; |
1da177e4 LT |
809 | pc->c[1] = 0x17; |
810 | ||
811 | memset(pc->buffer, 0, 12); | |
812 | pc->buffer[1] = 0xA2; | |
813 | /* Default format list header, u8 1: FOV/DCRT/IMM bits set */ | |
814 | ||
815 | if (flags & 1) /* Verify bit on... */ | |
816 | pc->buffer[1] ^= 0x20; /* ... turn off DCRT bit */ | |
817 | pc->buffer[3] = 8; | |
818 | ||
8f622430 BP |
819 | put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buffer[4])); |
820 | put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buffer[8])); | |
0571c7a4 | 821 | pc->buffer_size = 12; |
6e5fa7b8 | 822 | pc->flags |= PC_FLAG_WRITING; |
1da177e4 LT |
823 | } |
824 | ||
0571c7a4 BP |
825 | /* A mode sense command is used to "sense" floppy parameters. */ |
826 | static void idefloppy_create_mode_sense_cmd(idefloppy_pc_t *pc, u8 page_code, | |
827 | u8 type) | |
1da177e4 | 828 | { |
24a5d703 | 829 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
0571c7a4 | 830 | |
1da177e4 | 831 | idefloppy_init_pc(pc); |
30d67099 | 832 | pc->c[0] = GPCMD_MODE_SENSE_10; |
1da177e4 LT |
833 | pc->c[1] = 0; |
834 | pc->c[2] = page_code + (type << 6); | |
835 | ||
836 | switch (page_code) { | |
0571c7a4 BP |
837 | case IDEFLOPPY_CAPABILITIES_PAGE: |
838 | length += 12; | |
839 | break; | |
840 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: | |
841 | length += 32; | |
842 | break; | |
843 | default: | |
844 | printk(KERN_ERR "ide-floppy: unsupported page code " | |
1da177e4 LT |
845 | "in create_mode_sense_cmd\n"); |
846 | } | |
8f622430 | 847 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
1da177e4 LT |
848 | pc->request_transfer = length; |
849 | } | |
850 | ||
0571c7a4 | 851 | static void idefloppy_create_start_stop_cmd(idefloppy_pc_t *pc, int start) |
1da177e4 LT |
852 | { |
853 | idefloppy_init_pc(pc); | |
30d67099 | 854 | pc->c[0] = GPCMD_START_STOP_UNIT; |
1da177e4 LT |
855 | pc->c[4] = start; |
856 | } | |
857 | ||
858 | static void idefloppy_create_test_unit_ready_cmd(idefloppy_pc_t *pc) | |
859 | { | |
860 | idefloppy_init_pc(pc); | |
30d67099 | 861 | pc->c[0] = GPCMD_TEST_UNIT_READY; |
1da177e4 LT |
862 | } |
863 | ||
ae7e8ddc BP |
864 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
865 | idefloppy_pc_t *pc, struct request *rq, | |
866 | unsigned long sector) | |
1da177e4 LT |
867 | { |
868 | int block = sector / floppy->bs_factor; | |
869 | int blocks = rq->nr_sectors / floppy->bs_factor; | |
870 | int cmd = rq_data_dir(rq); | |
871 | ||
ae7e8ddc | 872 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
1da177e4 LT |
873 | block, blocks); |
874 | ||
875 | idefloppy_init_pc(pc); | |
ae7e8ddc BP |
876 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
877 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); | |
8f622430 | 878 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
ae7e8ddc | 879 | |
1da177e4 LT |
880 | pc->callback = &idefloppy_rw_callback; |
881 | pc->rq = rq; | |
882 | pc->b_count = cmd == READ ? 0 : rq->bio->bi_size; | |
4aff5e23 | 883 | if (rq->cmd_flags & REQ_RW) |
6e5fa7b8 | 884 | pc->flags |= PC_FLAG_WRITING; |
1da177e4 LT |
885 | pc->buffer = NULL; |
886 | pc->request_transfer = pc->buffer_size = blocks * floppy->block_size; | |
6e5fa7b8 | 887 | pc->flags |= PC_FLAG_DMA_RECOMMENDED; |
1da177e4 LT |
888 | } |
889 | ||
0571c7a4 BP |
890 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
891 | idefloppy_pc_t *pc, struct request *rq) | |
1da177e4 | 892 | { |
1da177e4 | 893 | idefloppy_init_pc(pc); |
3d6392cf | 894 | pc->callback = &idefloppy_rw_callback; |
1da177e4 | 895 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
3d6392cf JA |
896 | pc->rq = rq; |
897 | pc->b_count = rq->data_len; | |
898 | if (rq->data_len && rq_data_dir(rq) == WRITE) | |
6e5fa7b8 | 899 | pc->flags |= PC_FLAG_WRITING; |
3d6392cf JA |
900 | pc->buffer = rq->data; |
901 | if (rq->bio) | |
6e5fa7b8 | 902 | pc->flags |= PC_FLAG_DMA_RECOMMENDED; |
3d6392cf JA |
903 | /* |
904 | * possibly problematic, doesn't look like ide-floppy correctly | |
905 | * handled scattered requests if dma fails... | |
906 | */ | |
907 | pc->request_transfer = pc->buffer_size = rq->data_len; | |
1da177e4 LT |
908 | } |
909 | ||
0571c7a4 BP |
910 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
911 | struct request *rq, sector_t block_s) | |
1da177e4 LT |
912 | { |
913 | idefloppy_floppy_t *floppy = drive->driver_data; | |
914 | idefloppy_pc_t *pc; | |
915 | unsigned long block = (unsigned long)block_s; | |
916 | ||
bcc77d9c | 917 | debug_log("dev: %s, cmd_type: %x, errors: %d\n", |
18cddac3 | 918 | rq->rq_disk ? rq->rq_disk->disk_name : "?", |
bcc77d9c BP |
919 | rq->cmd_type, rq->errors); |
920 | debug_log("sector: %ld, nr_sectors: %ld, " | |
1da177e4 LT |
921 | "current_nr_sectors: %d\n", (long)rq->sector, |
922 | rq->nr_sectors, rq->current_nr_sectors); | |
923 | ||
924 | if (rq->errors >= ERROR_MAX) { | |
d652c138 BP |
925 | if (floppy->failed_pc) |
926 | ide_floppy_report_error(floppy, floppy->failed_pc); | |
1da177e4 LT |
927 | else |
928 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", | |
929 | drive->name); | |
930 | idefloppy_do_end_request(drive, 0, 0); | |
931 | return ide_stopped; | |
932 | } | |
4aff5e23 | 933 | if (blk_fs_request(rq)) { |
1da177e4 LT |
934 | if (((long)rq->sector % floppy->bs_factor) || |
935 | (rq->nr_sectors % floppy->bs_factor)) { | |
0571c7a4 BP |
936 | printk(KERN_ERR "%s: unsupported r/w request size\n", |
937 | drive->name); | |
1da177e4 LT |
938 | idefloppy_do_end_request(drive, 0, 0); |
939 | return ide_stopped; | |
940 | } | |
941 | pc = idefloppy_next_pc_storage(drive); | |
942 | idefloppy_create_rw_cmd(floppy, pc, rq, block); | |
4aff5e23 | 943 | } else if (blk_special_request(rq)) { |
1da177e4 | 944 | pc = (idefloppy_pc_t *) rq->buffer; |
4aff5e23 | 945 | } else if (blk_pc_request(rq)) { |
1da177e4 | 946 | pc = idefloppy_next_pc_storage(drive); |
3d6392cf | 947 | idefloppy_blockpc_cmd(floppy, pc, rq); |
1da177e4 LT |
948 | } else { |
949 | blk_dump_rq_flags(rq, | |
950 | "ide-floppy: unsupported command in queue"); | |
951 | idefloppy_do_end_request(drive, 0, 0); | |
952 | return ide_stopped; | |
953 | } | |
954 | ||
955 | pc->rq = rq; | |
956 | return idefloppy_issue_pc(drive, pc); | |
957 | } | |
958 | ||
959 | /* | |
0571c7a4 BP |
960 | * Add a special packet command request to the tail of the request queue, |
961 | * and wait for it to be serviced. | |
1da177e4 | 962 | */ |
0571c7a4 | 963 | static int idefloppy_queue_pc_tail(ide_drive_t *drive, idefloppy_pc_t *pc) |
1da177e4 LT |
964 | { |
965 | struct ide_floppy_obj *floppy = drive->driver_data; | |
966 | struct request rq; | |
967 | ||
0571c7a4 | 968 | ide_init_drive_cmd(&rq); |
1da177e4 | 969 | rq.buffer = (char *) pc; |
4aff5e23 | 970 | rq.cmd_type = REQ_TYPE_SPECIAL; |
1da177e4 LT |
971 | rq.rq_disk = floppy->disk; |
972 | ||
973 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
974 | } | |
975 | ||
976 | /* | |
8e81bbba BP |
977 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
978 | * parameters and use the LBA parameters instead. | |
1da177e4 | 979 | */ |
8e81bbba | 980 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
1da177e4 LT |
981 | { |
982 | idefloppy_floppy_t *floppy = drive->driver_data; | |
983 | idefloppy_pc_t pc; | |
8e81bbba | 984 | u8 *page; |
1da177e4 | 985 | int capacity, lba_capacity; |
8e81bbba BP |
986 | u16 transfer_rate, sector_size, cyls, rpm; |
987 | u8 heads, sectors; | |
1da177e4 | 988 | |
8e81bbba BP |
989 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE, |
990 | MODE_SENSE_CURRENT); | |
991 | ||
992 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
993 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" | |
994 | " parameters\n"); | |
1da177e4 LT |
995 | return 1; |
996 | } | |
24a5d703 | 997 | floppy->wp = !!(pc.buffer[3] & 0x80); |
1da177e4 | 998 | set_disk_ro(floppy->disk, floppy->wp); |
8e81bbba BP |
999 | page = &pc.buffer[8]; |
1000 | ||
1001 | transfer_rate = be16_to_cpu(*(u16 *)&pc.buffer[8 + 2]); | |
1002 | sector_size = be16_to_cpu(*(u16 *)&pc.buffer[8 + 6]); | |
1003 | cyls = be16_to_cpu(*(u16 *)&pc.buffer[8 + 8]); | |
1004 | rpm = be16_to_cpu(*(u16 *)&pc.buffer[8 + 28]); | |
1005 | heads = pc.buffer[8 + 4]; | |
1006 | sectors = pc.buffer[8 + 5]; | |
1007 | ||
1008 | capacity = cyls * heads * sectors * sector_size; | |
1009 | ||
1010 | if (memcmp(page, &floppy->flexible_disk_page, 32)) | |
1da177e4 LT |
1011 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
1012 | "%d sector size, %d rpm\n", | |
8e81bbba BP |
1013 | drive->name, capacity / 1024, cyls, heads, |
1014 | sectors, transfer_rate / 8, sector_size, rpm); | |
1015 | ||
1016 | memcpy(&floppy->flexible_disk_page, page, 32); | |
1017 | drive->bios_cyl = cyls; | |
1018 | drive->bios_head = heads; | |
1019 | drive->bios_sect = sectors; | |
1da177e4 | 1020 | lba_capacity = floppy->blocks * floppy->block_size; |
8e81bbba | 1021 | |
1da177e4 LT |
1022 | if (capacity < lba_capacity) { |
1023 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " | |
1024 | "bytes, but the drive only handles %d\n", | |
1025 | drive->name, lba_capacity, capacity); | |
8e81bbba BP |
1026 | floppy->blocks = floppy->block_size ? |
1027 | capacity / floppy->block_size : 0; | |
1da177e4 LT |
1028 | } |
1029 | return 0; | |
1030 | } | |
1031 | ||
948391d1 | 1032 | static int idefloppy_get_sfrp_bit(ide_drive_t *drive) |
1da177e4 LT |
1033 | { |
1034 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1035 | idefloppy_pc_t pc; | |
1da177e4 LT |
1036 | |
1037 | floppy->srfp = 0; | |
1038 | idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE, | |
1039 | MODE_SENSE_CURRENT); | |
1040 | ||
6e5fa7b8 | 1041 | pc.flags |= PC_FLAG_SUPPRESS_ERROR; |
948391d1 | 1042 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 1043 | return 1; |
1da177e4 | 1044 | |
948391d1 | 1045 | floppy->srfp = pc.buffer[8 + 2] & 0x40; |
1da177e4 LT |
1046 | return (0); |
1047 | } | |
1048 | ||
1049 | /* | |
194ec0c0 BP |
1050 | * Determine if a media is present in the floppy drive, and if so, its LBA |
1051 | * capacity. | |
1da177e4 | 1052 | */ |
194ec0c0 | 1053 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
1da177e4 LT |
1054 | { |
1055 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1056 | idefloppy_pc_t pc; | |
194ec0c0 BP |
1057 | u8 *cap_desc; |
1058 | u8 header_len, desc_cnt; | |
1059 | int i, rc = 1, blocks, length; | |
1060 | ||
1da177e4 LT |
1061 | drive->bios_cyl = 0; |
1062 | drive->bios_head = drive->bios_sect = 0; | |
fdb77da4 AC |
1063 | floppy->blocks = 0; |
1064 | floppy->bs_factor = 1; | |
1da177e4 LT |
1065 | set_capacity(floppy->disk, 0); |
1066 | ||
1067 | idefloppy_create_read_capacity_cmd(&pc); | |
1068 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1069 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
1070 | return 1; | |
1071 | } | |
194ec0c0 BP |
1072 | header_len = pc.buffer[3]; |
1073 | cap_desc = &pc.buffer[4]; | |
1074 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ | |
1075 | ||
1076 | for (i = 0; i < desc_cnt; i++) { | |
1077 | unsigned int desc_start = 4 + i*8; | |
1078 | ||
1079 | blocks = be32_to_cpu(*(u32 *)&pc.buffer[desc_start]); | |
1080 | length = be16_to_cpu(*(u16 *)&pc.buffer[desc_start + 6]); | |
1081 | ||
1082 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", | |
1083 | i, blocks * length / 1024, blocks, length); | |
1da177e4 | 1084 | |
194ec0c0 BP |
1085 | if (i) |
1086 | continue; | |
1087 | /* | |
1088 | * the code below is valid only for the 1st descriptor, ie i=0 | |
1089 | */ | |
1da177e4 | 1090 | |
194ec0c0 | 1091 | switch (pc.buffer[desc_start + 4] & 0x03) { |
1da177e4 LT |
1092 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
1093 | case CAPACITY_UNFORMATTED: | |
6e5fa7b8 | 1094 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) |
0571c7a4 | 1095 | /* |
1da177e4 LT |
1096 | * If it is not a clik drive, break out |
1097 | * (maintains previous driver behaviour) | |
1098 | */ | |
1099 | break; | |
1100 | case CAPACITY_CURRENT: | |
1101 | /* Normal Zip/LS-120 disks */ | |
194ec0c0 | 1102 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
1da177e4 LT |
1103 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
1104 | "sector size\n", drive->name, | |
1105 | blocks * length / 1024, blocks, length); | |
194ec0c0 BP |
1106 | memcpy(&floppy->cap_desc, cap_desc, 8); |
1107 | ||
1da177e4 LT |
1108 | if (!length || length % 512) { |
1109 | printk(KERN_NOTICE "%s: %d bytes block size " | |
1110 | "not supported\n", drive->name, length); | |
1111 | } else { | |
194ec0c0 BP |
1112 | floppy->blocks = blocks; |
1113 | floppy->block_size = length; | |
1114 | floppy->bs_factor = length / 512; | |
1115 | if (floppy->bs_factor != 1) | |
1116 | printk(KERN_NOTICE "%s: warning: non " | |
1da177e4 LT |
1117 | "512 bytes block size not " |
1118 | "fully supported\n", | |
1119 | drive->name); | |
194ec0c0 | 1120 | rc = 0; |
1da177e4 LT |
1121 | } |
1122 | break; | |
1123 | case CAPACITY_NO_CARTRIDGE: | |
1124 | /* | |
1125 | * This is a KERN_ERR so it appears on screen | |
1126 | * for the user to see | |
1127 | */ | |
1128 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); | |
1129 | break; | |
1130 | case CAPACITY_INVALID: | |
1131 | printk(KERN_ERR "%s: Invalid capacity for disk " | |
1132 | "in drive\n", drive->name); | |
1133 | break; | |
1134 | } | |
194ec0c0 BP |
1135 | debug_log("Descriptor 0 Code: %d\n", |
1136 | pc.buffer[desc_start + 4] & 0x03); | |
1da177e4 LT |
1137 | } |
1138 | ||
1139 | /* Clik! disk does not support get_flexible_disk_page */ | |
6e5fa7b8 | 1140 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) |
8e81bbba | 1141 | (void) ide_floppy_get_flexible_disk_page(drive); |
1da177e4 LT |
1142 | |
1143 | set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor); | |
1144 | return rc; | |
1145 | } | |
1146 | ||
1147 | /* | |
194ec0c0 BP |
1148 | * Obtain the list of formattable capacities. |
1149 | * Very similar to ide_floppy_get_capacity, except that we push the capacity | |
1150 | * descriptors to userland, instead of our own structures. | |
1151 | * | |
1152 | * Userland gives us the following structure: | |
1153 | * | |
1154 | * struct idefloppy_format_capacities { | |
1155 | * int nformats; | |
1156 | * struct { | |
1157 | * int nblocks; | |
1158 | * int blocksize; | |
1159 | * } formats[]; | |
1160 | * }; | |
1161 | * | |
1162 | * userland initializes nformats to the number of allocated formats[] records. | |
1163 | * On exit we set nformats to the number of records we've actually initialized. | |
1164 | */ | |
1da177e4 | 1165 | |
194ec0c0 | 1166 | static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg) |
1da177e4 | 1167 | { |
194ec0c0 BP |
1168 | idefloppy_pc_t pc; |
1169 | u8 header_len, desc_cnt; | |
1170 | int i, blocks, length, u_array_size, u_index; | |
1da177e4 LT |
1171 | int __user *argp; |
1172 | ||
1173 | if (get_user(u_array_size, arg)) | |
1174 | return (-EFAULT); | |
1175 | ||
1176 | if (u_array_size <= 0) | |
1177 | return (-EINVAL); | |
1178 | ||
1179 | idefloppy_create_read_capacity_cmd(&pc); | |
1180 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1181 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); | |
194ec0c0 BP |
1182 | return (-EIO); |
1183 | } | |
1184 | header_len = pc.buffer[3]; | |
1185 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ | |
1da177e4 LT |
1186 | |
1187 | u_index = 0; | |
1188 | argp = arg + 1; | |
1189 | ||
1190 | /* | |
194ec0c0 BP |
1191 | * We always skip the first capacity descriptor. That's the current |
1192 | * capacity. We are interested in the remaining descriptors, the | |
1193 | * formattable capacities. | |
1194 | */ | |
1195 | for (i = 1; i < desc_cnt; i++) { | |
1196 | unsigned int desc_start = 4 + i*8; | |
1da177e4 | 1197 | |
1da177e4 LT |
1198 | if (u_index >= u_array_size) |
1199 | break; /* User-supplied buffer too small */ | |
1da177e4 | 1200 | |
194ec0c0 BP |
1201 | blocks = be32_to_cpu(*(u32 *)&pc.buffer[desc_start]); |
1202 | length = be16_to_cpu(*(u16 *)&pc.buffer[desc_start + 6]); | |
1da177e4 LT |
1203 | |
1204 | if (put_user(blocks, argp)) | |
1205 | return(-EFAULT); | |
1206 | ++argp; | |
1207 | ||
1208 | if (put_user(length, argp)) | |
1209 | return (-EFAULT); | |
1210 | ++argp; | |
1211 | ||
1212 | ++u_index; | |
1213 | } | |
1214 | ||
1215 | if (put_user(u_index, arg)) | |
1216 | return (-EFAULT); | |
1217 | return (0); | |
1218 | } | |
1219 | ||
1da177e4 | 1220 | /* |
0571c7a4 BP |
1221 | * Get ATAPI_FORMAT_UNIT progress indication. |
1222 | * | |
1223 | * Userland gives a pointer to an int. The int is set to a progress | |
1224 | * indicator 0-65536, with 65536=100%. | |
1225 | * | |
1226 | * If the drive does not support format progress indication, we just check | |
1227 | * the dsc bit, and return either 0 or 65536. | |
1228 | */ | |
1da177e4 LT |
1229 | |
1230 | static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg) | |
1231 | { | |
1232 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1233 | idefloppy_pc_t pc; | |
1234 | int progress_indication = 0x10000; | |
1235 | ||
1236 | if (floppy->srfp) { | |
1237 | idefloppy_create_request_sense_cmd(&pc); | |
0571c7a4 | 1238 | if (idefloppy_queue_pc_tail(drive, &pc)) |
1da177e4 | 1239 | return (-EIO); |
1da177e4 LT |
1240 | |
1241 | if (floppy->sense_key == 2 && | |
1242 | floppy->asc == 4 && | |
0571c7a4 | 1243 | floppy->ascq == 4) |
1da177e4 | 1244 | progress_indication = floppy->progress_indication; |
0571c7a4 BP |
1245 | |
1246 | /* Else assume format_unit has finished, and we're at 0x10000 */ | |
1da177e4 | 1247 | } else { |
1da177e4 | 1248 | unsigned long flags; |
22c525b9 | 1249 | u8 stat; |
1da177e4 LT |
1250 | |
1251 | local_irq_save(flags); | |
22c525b9 | 1252 | stat = drive->hwif->INB(IDE_STATUS_REG); |
1da177e4 LT |
1253 | local_irq_restore(flags); |
1254 | ||
22c525b9 | 1255 | progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000; |
1da177e4 LT |
1256 | } |
1257 | if (put_user(progress_indication, arg)) | |
1258 | return (-EFAULT); | |
1259 | ||
1260 | return (0); | |
1261 | } | |
1262 | ||
0571c7a4 | 1263 | static sector_t idefloppy_capacity(ide_drive_t *drive) |
1da177e4 LT |
1264 | { |
1265 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1266 | unsigned long capacity = floppy->blocks * floppy->bs_factor; | |
1267 | ||
1268 | return capacity; | |
1269 | } | |
1270 | ||
1271 | /* | |
f373bd82 BP |
1272 | * Check whether we can support a drive, based on the ATAPI IDENTIFY command |
1273 | * results. | |
1da177e4 | 1274 | */ |
f373bd82 | 1275 | static int idefloppy_identify_device(ide_drive_t *drive, struct hd_driveid *id) |
1da177e4 LT |
1276 | { |
1277 | struct idefloppy_id_gcw gcw; | |
1da177e4 LT |
1278 | |
1279 | *((u16 *) &gcw) = id->config; | |
1280 | ||
1281 | #ifdef CONFIG_PPC | |
1282 | /* kludge for Apple PowerBook internal zip */ | |
1283 | if ((gcw.device_type == 5) && | |
1284 | !strstr(id->model, "CD-ROM") && | |
1285 | strstr(id->model, "ZIP")) | |
f373bd82 | 1286 | gcw.device_type = 0; |
1da177e4 LT |
1287 | #endif |
1288 | ||
1da177e4 | 1289 | if (gcw.protocol != 2) |
f373bd82 BP |
1290 | printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n", |
1291 | gcw.protocol); | |
1da177e4 | 1292 | else if (gcw.device_type != 0) |
f373bd82 BP |
1293 | printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set " |
1294 | "to floppy\n", gcw.device_type); | |
1da177e4 LT |
1295 | else if (!gcw.removable) |
1296 | printk(KERN_ERR "ide-floppy: The removable flag is not set\n"); | |
1297 | else if (gcw.drq_type == 3) { | |
f373bd82 BP |
1298 | printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not " |
1299 | "supported\n", gcw.drq_type); | |
1da177e4 | 1300 | } else if (gcw.packet_size != 0) { |
f373bd82 BP |
1301 | printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 " |
1302 | "bytes long\n", gcw.packet_size); | |
1da177e4 LT |
1303 | } else |
1304 | return 1; | |
1305 | return 0; | |
1306 | } | |
1307 | ||
7662d046 | 1308 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1309 | static void idefloppy_add_settings(ide_drive_t *drive) |
1310 | { | |
1311 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1312 | ||
0571c7a4 BP |
1313 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, |
1314 | &drive->bios_cyl, NULL); | |
1315 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, | |
1316 | &drive->bios_head, NULL); | |
1317 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, | |
1318 | &drive->bios_sect, NULL); | |
1319 | ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, | |
1320 | &floppy->ticks, NULL); | |
1da177e4 | 1321 | } |
7662d046 BZ |
1322 | #else |
1323 | static inline void idefloppy_add_settings(ide_drive_t *drive) { ; } | |
1324 | #endif | |
1da177e4 | 1325 | |
0571c7a4 | 1326 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
1da177e4 LT |
1327 | { |
1328 | struct idefloppy_id_gcw gcw; | |
1329 | ||
1330 | *((u16 *) &gcw) = drive->id->config; | |
1331 | floppy->pc = floppy->pc_stack; | |
1332 | if (gcw.drq_type == 1) | |
6e5fa7b8 | 1333 | floppy->flags |= IDEFLOPPY_FLAG_DRQ_INTERRUPT; |
1da177e4 | 1334 | /* |
0571c7a4 BP |
1335 | * We used to check revisions here. At this point however I'm giving up. |
1336 | * Just assume they are all broken, its easier. | |
1da177e4 | 1337 | * |
0571c7a4 BP |
1338 | * The actual reason for the workarounds was likely a driver bug after |
1339 | * all rather than a firmware bug, and the workaround below used to hide | |
1340 | * it. It should be fixed as of version 1.9, but to be on the safe side | |
1341 | * we'll leave the limitation below for the 2.2.x tree. | |
1da177e4 | 1342 | */ |
1da177e4 | 1343 | if (!strncmp(drive->id->model, "IOMEGA ZIP 100 ATAPI", 20)) { |
6e5fa7b8 | 1344 | floppy->flags |= IDEFLOPPY_FLAG_ZIP_DRIVE; |
1da177e4 LT |
1345 | /* This value will be visible in the /proc/ide/hdx/settings */ |
1346 | floppy->ticks = IDEFLOPPY_TICKS_DELAY; | |
1347 | blk_queue_max_sectors(drive->queue, 64); | |
1348 | } | |
1349 | ||
1350 | /* | |
0571c7a4 BP |
1351 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
1352 | * nasty clicking noises without it, so please don't remove this. | |
1353 | */ | |
1da177e4 LT |
1354 | if (strncmp(drive->id->model, "IOMEGA Clik!", 11) == 0) { |
1355 | blk_queue_max_sectors(drive->queue, 64); | |
6e5fa7b8 | 1356 | floppy->flags |= IDEFLOPPY_FLAG_CLIK_DRIVE; |
1da177e4 LT |
1357 | } |
1358 | ||
194ec0c0 | 1359 | (void) ide_floppy_get_capacity(drive); |
1da177e4 LT |
1360 | idefloppy_add_settings(drive); |
1361 | } | |
1362 | ||
4031bbe4 | 1363 | static void ide_floppy_remove(ide_drive_t *drive) |
1da177e4 LT |
1364 | { |
1365 | idefloppy_floppy_t *floppy = drive->driver_data; | |
1366 | struct gendisk *g = floppy->disk; | |
1367 | ||
7662d046 | 1368 | ide_proc_unregister_driver(drive, floppy->driver); |
1da177e4 LT |
1369 | |
1370 | del_gendisk(g); | |
1371 | ||
1372 | ide_floppy_put(floppy); | |
1da177e4 LT |
1373 | } |
1374 | ||
9a24b63d | 1375 | static void idefloppy_cleanup_obj(struct kref *kref) |
1da177e4 LT |
1376 | { |
1377 | struct ide_floppy_obj *floppy = to_ide_floppy(kref); | |
1378 | ide_drive_t *drive = floppy->drive; | |
1379 | struct gendisk *g = floppy->disk; | |
1380 | ||
1381 | drive->driver_data = NULL; | |
1382 | g->private_data = NULL; | |
1383 | put_disk(g); | |
1384 | kfree(floppy); | |
1385 | } | |
1386 | ||
ecfd80e4 | 1387 | #ifdef CONFIG_IDE_PROC_FS |
0571c7a4 BP |
1388 | static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, |
1389 | int count, int *eof, void *data) | |
1da177e4 LT |
1390 | { |
1391 | ide_drive_t*drive = (ide_drive_t *)data; | |
1392 | int len; | |
1393 | ||
0571c7a4 BP |
1394 | len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); |
1395 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
1396 | } |
1397 | ||
1398 | static ide_proc_entry_t idefloppy_proc[] = { | |
0571c7a4 BP |
1399 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
1400 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, | |
1da177e4 LT |
1401 | { NULL, 0, NULL, NULL } |
1402 | }; | |
ecfd80e4 | 1403 | #endif /* CONFIG_IDE_PROC_FS */ |
1da177e4 | 1404 | |
4031bbe4 | 1405 | static int ide_floppy_probe(ide_drive_t *); |
1da177e4 | 1406 | |
1da177e4 | 1407 | static ide_driver_t idefloppy_driver = { |
8604affd | 1408 | .gen_driver = { |
4ef3b8f4 | 1409 | .owner = THIS_MODULE, |
8604affd BZ |
1410 | .name = "ide-floppy", |
1411 | .bus = &ide_bus_type, | |
8604affd | 1412 | }, |
4031bbe4 RK |
1413 | .probe = ide_floppy_probe, |
1414 | .remove = ide_floppy_remove, | |
1da177e4 LT |
1415 | .version = IDEFLOPPY_VERSION, |
1416 | .media = ide_floppy, | |
1da177e4 | 1417 | .supports_dsc_overlap = 0, |
1da177e4 LT |
1418 | .do_request = idefloppy_do_request, |
1419 | .end_request = idefloppy_do_end_request, | |
1420 | .error = __ide_error, | |
1421 | .abort = __ide_abort, | |
7662d046 | 1422 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1423 | .proc = idefloppy_proc, |
7662d046 | 1424 | #endif |
1da177e4 LT |
1425 | }; |
1426 | ||
1427 | static int idefloppy_open(struct inode *inode, struct file *filp) | |
1428 | { | |
1429 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1430 | struct ide_floppy_obj *floppy; | |
1431 | ide_drive_t *drive; | |
1432 | idefloppy_pc_t pc; | |
1433 | int ret = 0; | |
1434 | ||
bcc77d9c | 1435 | debug_log("Reached %s\n", __func__); |
1da177e4 | 1436 | |
0571c7a4 BP |
1437 | floppy = ide_floppy_get(disk); |
1438 | if (!floppy) | |
1da177e4 LT |
1439 | return -ENXIO; |
1440 | ||
1441 | drive = floppy->drive; | |
1442 | ||
c94964a4 | 1443 | floppy->openers++; |
1da177e4 | 1444 | |
c94964a4 | 1445 | if (floppy->openers == 1) { |
6e5fa7b8 | 1446 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
1da177e4 LT |
1447 | /* Just in case */ |
1448 | ||
1449 | idefloppy_create_test_unit_ready_cmd(&pc); | |
1450 | if (idefloppy_queue_pc_tail(drive, &pc)) { | |
1451 | idefloppy_create_start_stop_cmd(&pc, 1); | |
1452 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1453 | } | |
1454 | ||
194ec0c0 | 1455 | if (ide_floppy_get_capacity(drive) |
1da177e4 LT |
1456 | && (filp->f_flags & O_NDELAY) == 0 |
1457 | /* | |
0571c7a4 BP |
1458 | * Allow O_NDELAY to open a drive without a disk, or with an |
1459 | * unreadable disk, so that we can get the format capacity | |
1460 | * of the drive or begin the format - Sam | |
1461 | */ | |
1da177e4 | 1462 | ) { |
1da177e4 LT |
1463 | ret = -EIO; |
1464 | goto out_put_floppy; | |
1465 | } | |
1466 | ||
1467 | if (floppy->wp && (filp->f_mode & 2)) { | |
1da177e4 LT |
1468 | ret = -EROFS; |
1469 | goto out_put_floppy; | |
1470 | } | |
6e5fa7b8 | 1471 | floppy->flags |= IDEFLOPPY_FLAG_MEDIA_CHANGED; |
1da177e4 | 1472 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
6e5fa7b8 | 1473 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1474 | idefloppy_create_prevent_cmd(&pc, 1); |
1475 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1476 | } | |
1477 | check_disk_change(inode->i_bdev); | |
6e5fa7b8 | 1478 | } else if (floppy->flags & IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS) { |
1da177e4 LT |
1479 | ret = -EBUSY; |
1480 | goto out_put_floppy; | |
1481 | } | |
1482 | return 0; | |
1483 | ||
1484 | out_put_floppy: | |
c94964a4 | 1485 | floppy->openers--; |
1da177e4 LT |
1486 | ide_floppy_put(floppy); |
1487 | return ret; | |
1488 | } | |
1489 | ||
1490 | static int idefloppy_release(struct inode *inode, struct file *filp) | |
1491 | { | |
1492 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1493 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1494 | ide_drive_t *drive = floppy->drive; | |
1495 | idefloppy_pc_t pc; | |
bcc77d9c BP |
1496 | |
1497 | debug_log("Reached %s\n", __func__); | |
1da177e4 | 1498 | |
c94964a4 | 1499 | if (floppy->openers == 1) { |
1da177e4 | 1500 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
6e5fa7b8 | 1501 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
1da177e4 LT |
1502 | idefloppy_create_prevent_cmd(&pc, 0); |
1503 | (void) idefloppy_queue_pc_tail(drive, &pc); | |
1504 | } | |
1505 | ||
6e5fa7b8 | 1506 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
1da177e4 | 1507 | } |
c94964a4 BZ |
1508 | |
1509 | floppy->openers--; | |
1da177e4 LT |
1510 | |
1511 | ide_floppy_put(floppy); | |
1512 | ||
1513 | return 0; | |
1514 | } | |
1515 | ||
a885c8c4 CH |
1516 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1517 | { | |
1518 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1519 | ide_drive_t *drive = floppy->drive; | |
1520 | ||
1521 | geo->heads = drive->bios_head; | |
1522 | geo->sectors = drive->bios_sect; | |
1523 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ | |
1524 | return 0; | |
1525 | } | |
1526 | ||
20bf7bda BP |
1527 | static int ide_floppy_lockdoor(idefloppy_floppy_t *floppy, idefloppy_pc_t *pc, |
1528 | unsigned long arg, unsigned int cmd) | |
1529 | { | |
1530 | if (floppy->openers > 1) | |
1531 | return -EBUSY; | |
1532 | ||
1533 | /* The IOMEGA Clik! Drive doesn't support this command - | |
1534 | * no room for an eject mechanism */ | |
6e5fa7b8 | 1535 | if (!(floppy->flags & IDEFLOPPY_FLAG_CLIK_DRIVE)) { |
20bf7bda BP |
1536 | int prevent = arg ? 1 : 0; |
1537 | ||
1538 | if (cmd == CDROMEJECT) | |
1539 | prevent = 0; | |
1540 | ||
1541 | idefloppy_create_prevent_cmd(pc, prevent); | |
1542 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1543 | } | |
1544 | ||
1545 | if (cmd == CDROMEJECT) { | |
1546 | idefloppy_create_start_stop_cmd(pc, 2); | |
1547 | (void) idefloppy_queue_pc_tail(floppy->drive, pc); | |
1548 | } | |
1549 | ||
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | static int ide_floppy_format_unit(idefloppy_floppy_t *floppy, | |
1554 | int __user *arg) | |
1555 | { | |
1556 | int blocks, length, flags, err = 0; | |
1557 | idefloppy_pc_t pc; | |
1558 | ||
1559 | if (floppy->openers > 1) { | |
1560 | /* Don't format if someone is using the disk */ | |
6e5fa7b8 | 1561 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1562 | return -EBUSY; |
1563 | } | |
1564 | ||
6e5fa7b8 | 1565 | floppy->flags |= IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1566 | |
1567 | /* | |
1568 | * Send ATAPI_FORMAT_UNIT to the drive. | |
1569 | * | |
1570 | * Userland gives us the following structure: | |
1571 | * | |
1572 | * struct idefloppy_format_command { | |
1573 | * int nblocks; | |
1574 | * int blocksize; | |
1575 | * int flags; | |
1576 | * } ; | |
1577 | * | |
1578 | * flags is a bitmask, currently, the only defined flag is: | |
1579 | * | |
1580 | * 0x01 - verify media after format. | |
1581 | */ | |
1582 | if (get_user(blocks, arg) || | |
1583 | get_user(length, arg+1) || | |
1584 | get_user(flags, arg+2)) { | |
1585 | err = -EFAULT; | |
1586 | goto out; | |
1587 | } | |
1588 | ||
1589 | (void) idefloppy_get_sfrp_bit(floppy->drive); | |
1590 | idefloppy_create_format_unit_cmd(&pc, blocks, length, flags); | |
1591 | ||
1592 | if (idefloppy_queue_pc_tail(floppy->drive, &pc)) | |
1593 | err = -EIO; | |
1594 | ||
1595 | out: | |
1596 | if (err) | |
6e5fa7b8 | 1597 | floppy->flags &= ~IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS; |
20bf7bda BP |
1598 | return err; |
1599 | } | |
1600 | ||
1601 | ||
1da177e4 LT |
1602 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
1603 | unsigned int cmd, unsigned long arg) | |
1604 | { | |
1605 | struct block_device *bdev = inode->i_bdev; | |
1606 | struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk); | |
1607 | ide_drive_t *drive = floppy->drive; | |
20bf7bda | 1608 | idefloppy_pc_t pc; |
1da177e4 | 1609 | void __user *argp = (void __user *)arg; |
07203f64 | 1610 | int err; |
1da177e4 LT |
1611 | |
1612 | switch (cmd) { | |
1613 | case CDROMEJECT: | |
1da177e4 LT |
1614 | /* fall through */ |
1615 | case CDROM_LOCKDOOR: | |
20bf7bda | 1616 | return ide_floppy_lockdoor(floppy, &pc, arg, cmd); |
1da177e4 LT |
1617 | case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED: |
1618 | return 0; | |
1619 | case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY: | |
194ec0c0 | 1620 | return ide_floppy_get_format_capacities(drive, argp); |
1da177e4 | 1621 | case IDEFLOPPY_IOCTL_FORMAT_START: |
1da177e4 LT |
1622 | if (!(file->f_mode & 2)) |
1623 | return -EPERM; | |
1624 | ||
20bf7bda | 1625 | return ide_floppy_format_unit(floppy, (int __user *)arg); |
1da177e4 LT |
1626 | case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS: |
1627 | return idefloppy_get_format_progress(drive, argp); | |
1628 | } | |
89636af2 BZ |
1629 | |
1630 | /* | |
1631 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) | |
1632 | * and CDROM_SEND_PACKET (legacy) ioctls | |
1633 | */ | |
1634 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) | |
1635 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, | |
1636 | bdev->bd_disk, cmd, argp); | |
1637 | else | |
1638 | err = -ENOTTY; | |
1639 | ||
1640 | if (err == -ENOTTY) | |
1641 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); | |
1642 | ||
1643 | return err; | |
1da177e4 LT |
1644 | } |
1645 | ||
1646 | static int idefloppy_media_changed(struct gendisk *disk) | |
1647 | { | |
1648 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1649 | ide_drive_t *drive = floppy->drive; | |
6e5fa7b8 | 1650 | int ret; |
1da177e4 LT |
1651 | |
1652 | /* do not scan partitions twice if this is a removable device */ | |
1653 | if (drive->attach) { | |
1654 | drive->attach = 0; | |
1655 | return 0; | |
1656 | } | |
6e5fa7b8 BP |
1657 | ret = !!(floppy->flags & IDEFLOPPY_FLAG_MEDIA_CHANGED); |
1658 | floppy->flags &= ~IDEFLOPPY_FLAG_MEDIA_CHANGED; | |
1659 | return ret; | |
1da177e4 LT |
1660 | } |
1661 | ||
1662 | static int idefloppy_revalidate_disk(struct gendisk *disk) | |
1663 | { | |
1664 | struct ide_floppy_obj *floppy = ide_floppy_g(disk); | |
1665 | set_capacity(disk, idefloppy_capacity(floppy->drive)); | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | static struct block_device_operations idefloppy_ops = { | |
1670 | .owner = THIS_MODULE, | |
1671 | .open = idefloppy_open, | |
1672 | .release = idefloppy_release, | |
1673 | .ioctl = idefloppy_ioctl, | |
a885c8c4 | 1674 | .getgeo = idefloppy_getgeo, |
1da177e4 LT |
1675 | .media_changed = idefloppy_media_changed, |
1676 | .revalidate_disk= idefloppy_revalidate_disk | |
1677 | }; | |
1678 | ||
4031bbe4 | 1679 | static int ide_floppy_probe(ide_drive_t *drive) |
1da177e4 LT |
1680 | { |
1681 | idefloppy_floppy_t *floppy; | |
1682 | struct gendisk *g; | |
1683 | ||
1684 | if (!strstr("ide-floppy", drive->driver_req)) | |
1685 | goto failed; | |
1686 | if (!drive->present) | |
1687 | goto failed; | |
1688 | if (drive->media != ide_floppy) | |
1689 | goto failed; | |
0571c7a4 BP |
1690 | if (!idefloppy_identify_device(drive, drive->id)) { |
1691 | printk(KERN_ERR "ide-floppy: %s: not supported by this version" | |
1692 | " of ide-floppy\n", drive->name); | |
1da177e4 LT |
1693 | goto failed; |
1694 | } | |
1695 | if (drive->scsi) { | |
0571c7a4 BP |
1696 | printk(KERN_INFO "ide-floppy: passing drive %s to ide-scsi" |
1697 | " emulation.\n", drive->name); | |
1da177e4 LT |
1698 | goto failed; |
1699 | } | |
0571c7a4 BP |
1700 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
1701 | if (!floppy) { | |
1702 | printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" | |
1703 | " structure\n", drive->name); | |
1da177e4 LT |
1704 | goto failed; |
1705 | } | |
1706 | ||
1707 | g = alloc_disk(1 << PARTN_BITS); | |
1708 | if (!g) | |
1709 | goto out_free_floppy; | |
1710 | ||
1711 | ide_init_disk(g, drive); | |
1712 | ||
7662d046 | 1713 | ide_proc_register_driver(drive, &idefloppy_driver); |
1da177e4 | 1714 | |
1da177e4 LT |
1715 | kref_init(&floppy->kref); |
1716 | ||
1717 | floppy->drive = drive; | |
1718 | floppy->driver = &idefloppy_driver; | |
1719 | floppy->disk = g; | |
1720 | ||
1721 | g->private_data = &floppy->driver; | |
1722 | ||
1723 | drive->driver_data = floppy; | |
1724 | ||
0571c7a4 | 1725 | idefloppy_setup(drive, floppy); |
8604affd | 1726 | |
1da177e4 LT |
1727 | g->minors = 1 << PARTN_BITS; |
1728 | g->driverfs_dev = &drive->gendev; | |
1da177e4 LT |
1729 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
1730 | g->fops = &idefloppy_ops; | |
1731 | drive->attach = 1; | |
1732 | add_disk(g); | |
1733 | return 0; | |
1734 | ||
1da177e4 LT |
1735 | out_free_floppy: |
1736 | kfree(floppy); | |
1737 | failed: | |
8604affd | 1738 | return -ENODEV; |
1da177e4 LT |
1739 | } |
1740 | ||
0571c7a4 | 1741 | static void __exit idefloppy_exit(void) |
1da177e4 | 1742 | { |
8604affd | 1743 | driver_unregister(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1744 | } |
1745 | ||
17514e8a | 1746 | static int __init idefloppy_init(void) |
1da177e4 LT |
1747 | { |
1748 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); | |
8604affd | 1749 | return driver_register(&idefloppy_driver.gen_driver); |
1da177e4 LT |
1750 | } |
1751 | ||
263756ec | 1752 | MODULE_ALIAS("ide:*m-floppy*"); |
1da177e4 LT |
1753 | module_init(idefloppy_init); |
1754 | module_exit(idefloppy_exit); | |
1755 | MODULE_LICENSE("GPL"); | |
0571c7a4 BP |
1756 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
1757 |