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1da177e4 LT |
1 | /* |
2 | * File...........: linux/drivers/s390/block/dasd_int.h | |
3 | * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> | |
4 | * Horst Hummel <Horst.Hummel@de.ibm.com> | |
5 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | |
6 | * Bugreports.to..: <Linux390@de.ibm.com> | |
7 | * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 | |
8 | * | |
9 | * $Revision: 1.63 $ | |
10 | */ | |
11 | ||
12 | #ifndef DASD_INT_H | |
13 | #define DASD_INT_H | |
14 | ||
15 | #ifdef __KERNEL__ | |
16 | ||
17 | /* erp debugging in dasd.c and dasd_3990_erp.c */ | |
18 | #define ERP_DEBUG | |
19 | ||
20 | ||
21 | /* we keep old device allocation scheme; IOW, minors are still in 0..255 */ | |
22 | #define DASD_PER_MAJOR (1U << (MINORBITS - DASD_PARTN_BITS)) | |
23 | #define DASD_PARTN_MASK ((1 << DASD_PARTN_BITS) - 1) | |
24 | ||
25 | /* | |
26 | * States a dasd device can have: | |
27 | * new: the dasd_device structure is allocated. | |
28 | * known: the discipline for the device is identified. | |
29 | * basic: the device can do basic i/o. | |
30 | * accept: the device is analysed (format is known). | |
31 | * ready: partition detection is done and the device is can do block io. | |
32 | * online: the device accepts requests from the block device queue. | |
33 | * | |
34 | * Things to do for startup state transitions: | |
35 | * new -> known: find discipline for the device and create devfs entries. | |
36 | * known -> basic: request irq line for the device. | |
37 | * basic -> ready: do the initial analysis, e.g. format detection, | |
38 | * do block device setup and detect partitions. | |
39 | * ready -> online: schedule the device tasklet. | |
40 | * Things to do for shutdown state transitions: | |
41 | * online -> ready: just set the new device state. | |
42 | * ready -> basic: flush requests from the block device layer, clear | |
43 | * partition information and reset format information. | |
44 | * basic -> known: terminate all requests and free irq. | |
45 | * known -> new: remove devfs entries and forget discipline. | |
46 | */ | |
47 | ||
48 | #define DASD_STATE_NEW 0 | |
49 | #define DASD_STATE_KNOWN 1 | |
50 | #define DASD_STATE_BASIC 2 | |
51 | #define DASD_STATE_READY 3 | |
52 | #define DASD_STATE_ONLINE 4 | |
53 | ||
54 | #include <linux/module.h> | |
55 | #include <linux/wait.h> | |
56 | #include <linux/blkdev.h> | |
57 | #include <linux/devfs_fs_kernel.h> | |
58 | #include <linux/genhd.h> | |
59 | #include <linux/hdreg.h> | |
60 | #include <linux/interrupt.h> | |
61 | #include <asm/ccwdev.h> | |
62 | #include <linux/workqueue.h> | |
63 | #include <asm/debug.h> | |
64 | #include <asm/dasd.h> | |
65 | #include <asm/idals.h> | |
66 | ||
67 | /* | |
68 | * SECTION: Type definitions | |
69 | */ | |
70 | struct dasd_device; | |
71 | ||
72 | typedef int (*dasd_ioctl_fn_t) (struct block_device *bdev, int no, long args); | |
73 | ||
74 | struct dasd_ioctl { | |
75 | struct list_head list; | |
76 | struct module *owner; | |
77 | int no; | |
78 | dasd_ioctl_fn_t handler; | |
79 | }; | |
80 | ||
81 | typedef enum { | |
82 | dasd_era_fatal = -1, /* no chance to recover */ | |
83 | dasd_era_none = 0, /* don't recover, everything alright */ | |
84 | dasd_era_msg = 1, /* don't recover, just report... */ | |
85 | dasd_era_recover = 2 /* recovery action recommended */ | |
86 | } dasd_era_t; | |
87 | ||
88 | /* BIT DEFINITIONS FOR SENSE DATA */ | |
89 | #define DASD_SENSE_BIT_0 0x80 | |
90 | #define DASD_SENSE_BIT_1 0x40 | |
91 | #define DASD_SENSE_BIT_2 0x20 | |
92 | #define DASD_SENSE_BIT_3 0x10 | |
93 | ||
94 | /* | |
95 | * SECTION: MACROs for klogd and s390 debug feature (dbf) | |
96 | */ | |
97 | #define DBF_DEV_EVENT(d_level, d_device, d_str, d_data...) \ | |
98 | do { \ | |
99 | debug_sprintf_event(d_device->debug_area, \ | |
100 | d_level, \ | |
101 | d_str "\n", \ | |
102 | d_data); \ | |
103 | } while(0) | |
104 | ||
105 | #define DBF_DEV_EXC(d_level, d_device, d_str, d_data...) \ | |
106 | do { \ | |
107 | debug_sprintf_exception(d_device->debug_area, \ | |
108 | d_level, \ | |
109 | d_str "\n", \ | |
110 | d_data); \ | |
111 | } while(0) | |
112 | ||
113 | #define DBF_EVENT(d_level, d_str, d_data...)\ | |
114 | do { \ | |
115 | debug_sprintf_event(dasd_debug_area, \ | |
116 | d_level,\ | |
117 | d_str "\n", \ | |
118 | d_data); \ | |
119 | } while(0) | |
120 | ||
121 | #define DBF_EXC(d_level, d_str, d_data...)\ | |
122 | do { \ | |
123 | debug_sprintf_exception(dasd_debug_area, \ | |
124 | d_level,\ | |
125 | d_str "\n", \ | |
126 | d_data); \ | |
127 | } while(0) | |
128 | ||
129 | /* definition of dbf debug levels */ | |
130 | #define DBF_EMERG 0 /* system is unusable */ | |
131 | #define DBF_ALERT 1 /* action must be taken immediately */ | |
132 | #define DBF_CRIT 2 /* critical conditions */ | |
133 | #define DBF_ERR 3 /* error conditions */ | |
134 | #define DBF_WARNING 4 /* warning conditions */ | |
135 | #define DBF_NOTICE 5 /* normal but significant condition */ | |
136 | #define DBF_INFO 6 /* informational */ | |
137 | #define DBF_DEBUG 6 /* debug-level messages */ | |
138 | ||
139 | /* messages to be written via klogd and dbf */ | |
140 | #define DEV_MESSAGE(d_loglevel,d_device,d_string,d_args...)\ | |
141 | do { \ | |
142 | printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \ | |
143 | d_device->cdev->dev.bus_id, d_args); \ | |
144 | DBF_DEV_EVENT(DBF_ALERT, d_device, d_string, d_args); \ | |
145 | } while(0) | |
146 | ||
147 | #define MESSAGE(d_loglevel,d_string,d_args...)\ | |
148 | do { \ | |
149 | printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \ | |
150 | DBF_EVENT(DBF_ALERT, d_string, d_args); \ | |
151 | } while(0) | |
152 | ||
153 | /* messages to be written via klogd only */ | |
154 | #define DEV_MESSAGE_LOG(d_loglevel,d_device,d_string,d_args...)\ | |
155 | do { \ | |
156 | printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \ | |
157 | d_device->cdev->dev.bus_id, d_args); \ | |
158 | } while(0) | |
159 | ||
160 | #define MESSAGE_LOG(d_loglevel,d_string,d_args...)\ | |
161 | do { \ | |
162 | printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \ | |
163 | } while(0) | |
164 | ||
165 | struct dasd_ccw_req { | |
166 | unsigned int magic; /* Eye catcher */ | |
167 | struct list_head list; /* list_head for request queueing. */ | |
168 | ||
169 | /* Where to execute what... */ | |
170 | struct dasd_device *device; /* device the request is for */ | |
171 | struct ccw1 *cpaddr; /* address of channel program */ | |
172 | char status; /* status of this request */ | |
173 | short retries; /* A retry counter */ | |
174 | unsigned long flags; /* flags of this request */ | |
175 | ||
176 | /* ... and how */ | |
177 | unsigned long starttime; /* jiffies time of request start */ | |
178 | int expires; /* expiration period in jiffies */ | |
179 | char lpm; /* logical path mask */ | |
180 | void *data; /* pointer to data area */ | |
181 | ||
182 | /* these are important for recovering erroneous requests */ | |
183 | struct irb irb; /* device status in case of an error */ | |
184 | struct dasd_ccw_req *refers; /* ERP-chain queueing. */ | |
185 | void *function; /* originating ERP action */ | |
186 | ||
187 | /* these are for statistics only */ | |
188 | unsigned long long buildclk; /* TOD-clock of request generation */ | |
189 | unsigned long long startclk; /* TOD-clock of request start */ | |
190 | unsigned long long stopclk; /* TOD-clock of request interrupt */ | |
191 | unsigned long long endclk; /* TOD-clock of request termination */ | |
192 | ||
193 | /* Callback that is called after reaching final status. */ | |
194 | void (*callback)(struct dasd_ccw_req *, void *data); | |
195 | void *callback_data; | |
196 | }; | |
197 | ||
198 | /* | |
199 | * dasd_ccw_req -> status can be: | |
200 | */ | |
201 | #define DASD_CQR_FILLED 0x00 /* request is ready to be processed */ | |
202 | #define DASD_CQR_QUEUED 0x01 /* request is queued to be processed */ | |
203 | #define DASD_CQR_IN_IO 0x02 /* request is currently in IO */ | |
204 | #define DASD_CQR_DONE 0x03 /* request is completed successfully */ | |
205 | #define DASD_CQR_ERROR 0x04 /* request is completed with error */ | |
206 | #define DASD_CQR_FAILED 0x05 /* request is finally failed */ | |
207 | #define DASD_CQR_CLEAR 0x06 /* request is clear pending */ | |
208 | ||
209 | /* per dasd_ccw_req flags */ | |
210 | #define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */ | |
211 | ||
212 | /* Signature for error recovery functions. */ | |
213 | typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *); | |
214 | ||
215 | /* | |
216 | * the struct dasd_discipline is | |
217 | * sth like a table of virtual functions, if you think of dasd_eckd | |
218 | * inheriting dasd... | |
219 | * no, currently we are not planning to reimplement the driver in C++ | |
220 | */ | |
221 | struct dasd_discipline { | |
222 | struct module *owner; | |
223 | char ebcname[8]; /* a name used for tagging and printks */ | |
224 | char name[8]; /* a name used for tagging and printks */ | |
225 | int max_blocks; /* maximum number of blocks to be chained */ | |
226 | ||
227 | struct list_head list; /* used for list of disciplines */ | |
228 | ||
229 | /* | |
230 | * Device recognition functions. check_device is used to verify | |
231 | * the sense data and the information returned by read device | |
232 | * characteristics. It returns 0 if the discipline can be used | |
233 | * for the device in question. | |
234 | * do_analysis is used in the step from device state "basic" to | |
235 | * state "accept". It returns 0 if the device can be made ready, | |
236 | * it returns -EMEDIUMTYPE if the device can't be made ready or | |
237 | * -EAGAIN if do_analysis started a ccw that needs to complete | |
238 | * before the analysis may be repeated. | |
239 | */ | |
240 | int (*check_device)(struct dasd_device *); | |
241 | int (*do_analysis) (struct dasd_device *); | |
242 | ||
243 | /* | |
244 | * Device operation functions. build_cp creates a ccw chain for | |
245 | * a block device request, start_io starts the request and | |
246 | * term_IO cancels it (e.g. in case of a timeout). format_device | |
247 | * returns a ccw chain to be used to format the device. | |
248 | */ | |
249 | struct dasd_ccw_req *(*build_cp) (struct dasd_device *, | |
250 | struct request *); | |
251 | int (*start_IO) (struct dasd_ccw_req *); | |
252 | int (*term_IO) (struct dasd_ccw_req *); | |
253 | struct dasd_ccw_req *(*format_device) (struct dasd_device *, | |
254 | struct format_data_t *); | |
255 | int (*free_cp) (struct dasd_ccw_req *, struct request *); | |
256 | /* | |
257 | * Error recovery functions. examine_error() returns a value that | |
258 | * indicates what to do for an error condition. If examine_error() | |
259 | * returns 'dasd_era_recover' erp_action() is called to create a | |
260 | * special error recovery ccw. erp_postaction() is called after | |
261 | * an error recovery ccw has finished its execution. dump_sense | |
262 | * is called for every error condition to print the sense data | |
263 | * to the console. | |
264 | */ | |
265 | dasd_era_t(*examine_error) (struct dasd_ccw_req *, struct irb *); | |
266 | dasd_erp_fn_t(*erp_action) (struct dasd_ccw_req *); | |
267 | dasd_erp_fn_t(*erp_postaction) (struct dasd_ccw_req *); | |
268 | void (*dump_sense) (struct dasd_device *, struct dasd_ccw_req *, | |
269 | struct irb *); | |
270 | ||
271 | /* i/o control functions. */ | |
272 | int (*fill_geometry) (struct dasd_device *, struct hd_geometry *); | |
273 | int (*fill_info) (struct dasd_device *, struct dasd_information2_t *); | |
274 | }; | |
275 | ||
276 | extern struct dasd_discipline *dasd_diag_discipline_pointer; | |
277 | ||
278 | struct dasd_device { | |
279 | /* Block device stuff. */ | |
280 | struct gendisk *gdp; | |
281 | request_queue_t *request_queue; | |
282 | spinlock_t request_queue_lock; | |
283 | struct block_device *bdev; | |
284 | unsigned int devindex; | |
285 | unsigned long blocks; /* size of volume in blocks */ | |
286 | unsigned int bp_block; /* bytes per block */ | |
287 | unsigned int s2b_shift; /* log2 (bp_block/512) */ | |
288 | unsigned long flags; /* per device flags */ | |
289 | ||
290 | /* Device discipline stuff. */ | |
291 | struct dasd_discipline *discipline; | |
292 | char *private; | |
293 | ||
294 | /* Device state and target state. */ | |
295 | int state, target; | |
296 | int stopped; /* device (ccw_device_start) was stopped */ | |
297 | ||
298 | /* Open and reference count. */ | |
299 | atomic_t ref_count; | |
300 | atomic_t open_count; | |
301 | ||
302 | /* ccw queue and memory for static ccw/erp buffers. */ | |
303 | struct list_head ccw_queue; | |
304 | spinlock_t mem_lock; | |
305 | void *ccw_mem; | |
306 | void *erp_mem; | |
307 | struct list_head ccw_chunks; | |
308 | struct list_head erp_chunks; | |
309 | ||
310 | atomic_t tasklet_scheduled; | |
311 | struct tasklet_struct tasklet; | |
312 | struct work_struct kick_work; | |
313 | struct timer_list timer; | |
314 | ||
315 | debug_info_t *debug_area; | |
316 | ||
317 | struct ccw_device *cdev; | |
318 | ||
319 | #ifdef CONFIG_DASD_PROFILE | |
320 | struct dasd_profile_info_t profile; | |
321 | #endif | |
322 | }; | |
323 | ||
324 | /* reasons why device (ccw_device_start) was stopped */ | |
325 | #define DASD_STOPPED_NOT_ACC 1 /* not accessible */ | |
326 | #define DASD_STOPPED_QUIESCE 2 /* Quiesced */ | |
327 | #define DASD_STOPPED_PENDING 4 /* long busy */ | |
328 | #define DASD_STOPPED_DC_WAIT 8 /* disconnected, wait */ | |
329 | #define DASD_STOPPED_DC_EIO 16 /* disconnected, return -EIO */ | |
330 | ||
331 | /* per device flags */ | |
332 | #define DASD_FLAG_RO 0 /* device is read-only */ | |
333 | #define DASD_FLAG_USE_DIAG 1 /* use diag disciplnie */ | |
334 | #define DASD_FLAG_DSC_ERROR 2 /* return -EIO when disconnected */ | |
335 | #define DASD_FLAG_OFFLINE 3 /* device is in offline processing */ | |
336 | ||
337 | void dasd_put_device_wake(struct dasd_device *); | |
338 | ||
339 | /* | |
340 | * Reference count inliners | |
341 | */ | |
342 | static inline void | |
343 | dasd_get_device(struct dasd_device *device) | |
344 | { | |
345 | atomic_inc(&device->ref_count); | |
346 | } | |
347 | ||
348 | static inline void | |
349 | dasd_put_device(struct dasd_device *device) | |
350 | { | |
351 | if (atomic_dec_return(&device->ref_count) == 0) | |
352 | dasd_put_device_wake(device); | |
353 | } | |
354 | ||
355 | /* | |
356 | * The static memory in ccw_mem and erp_mem is managed by a sorted | |
357 | * list of free memory chunks. | |
358 | */ | |
359 | struct dasd_mchunk | |
360 | { | |
361 | struct list_head list; | |
362 | unsigned long size; | |
363 | } __attribute__ ((aligned(8))); | |
364 | ||
365 | static inline void | |
366 | dasd_init_chunklist(struct list_head *chunk_list, void *mem, | |
367 | unsigned long size) | |
368 | { | |
369 | struct dasd_mchunk *chunk; | |
370 | ||
371 | INIT_LIST_HEAD(chunk_list); | |
372 | chunk = (struct dasd_mchunk *) mem; | |
373 | chunk->size = size - sizeof(struct dasd_mchunk); | |
374 | list_add(&chunk->list, chunk_list); | |
375 | } | |
376 | ||
377 | static inline void * | |
378 | dasd_alloc_chunk(struct list_head *chunk_list, unsigned long size) | |
379 | { | |
380 | struct dasd_mchunk *chunk, *tmp; | |
381 | ||
382 | size = (size + 7L) & -8L; | |
383 | list_for_each_entry(chunk, chunk_list, list) { | |
384 | if (chunk->size < size) | |
385 | continue; | |
386 | if (chunk->size > size + sizeof(struct dasd_mchunk)) { | |
387 | char *endaddr = (char *) (chunk + 1) + chunk->size; | |
388 | tmp = (struct dasd_mchunk *) (endaddr - size) - 1; | |
389 | tmp->size = size; | |
390 | chunk->size -= size + sizeof(struct dasd_mchunk); | |
391 | chunk = tmp; | |
392 | } else | |
393 | list_del(&chunk->list); | |
394 | return (void *) (chunk + 1); | |
395 | } | |
396 | return NULL; | |
397 | } | |
398 | ||
399 | static inline void | |
400 | dasd_free_chunk(struct list_head *chunk_list, void *mem) | |
401 | { | |
402 | struct dasd_mchunk *chunk, *tmp; | |
403 | struct list_head *p, *left; | |
404 | ||
405 | chunk = (struct dasd_mchunk *) | |
406 | ((char *) mem - sizeof(struct dasd_mchunk)); | |
407 | /* Find out the left neighbour in chunk_list. */ | |
408 | left = chunk_list; | |
409 | list_for_each(p, chunk_list) { | |
410 | if (list_entry(p, struct dasd_mchunk, list) > chunk) | |
411 | break; | |
412 | left = p; | |
413 | } | |
414 | /* Try to merge with right neighbour = next element from left. */ | |
415 | if (left->next != chunk_list) { | |
416 | tmp = list_entry(left->next, struct dasd_mchunk, list); | |
417 | if ((char *) (chunk + 1) + chunk->size == (char *) tmp) { | |
418 | list_del(&tmp->list); | |
419 | chunk->size += tmp->size + sizeof(struct dasd_mchunk); | |
420 | } | |
421 | } | |
422 | /* Try to merge with left neighbour. */ | |
423 | if (left != chunk_list) { | |
424 | tmp = list_entry(left, struct dasd_mchunk, list); | |
425 | if ((char *) (tmp + 1) + tmp->size == (char *) chunk) { | |
426 | tmp->size += chunk->size + sizeof(struct dasd_mchunk); | |
427 | return; | |
428 | } | |
429 | } | |
430 | __list_add(&chunk->list, left, left->next); | |
431 | } | |
432 | ||
433 | /* | |
434 | * Check if bsize is in { 512, 1024, 2048, 4096 } | |
435 | */ | |
436 | static inline int | |
437 | dasd_check_blocksize(int bsize) | |
438 | { | |
439 | if (bsize < 512 || bsize > 4096 || (bsize & (bsize - 1)) != 0) | |
440 | return -EMEDIUMTYPE; | |
441 | return 0; | |
442 | } | |
443 | ||
444 | /* externals in dasd.c */ | |
445 | #define DASD_PROFILE_ON 1 | |
446 | #define DASD_PROFILE_OFF 0 | |
447 | ||
448 | extern debug_info_t *dasd_debug_area; | |
449 | extern struct dasd_profile_info_t dasd_global_profile; | |
450 | extern unsigned int dasd_profile_level; | |
451 | extern struct block_device_operations dasd_device_operations; | |
452 | ||
453 | extern kmem_cache_t *dasd_page_cache; | |
454 | ||
455 | struct dasd_ccw_req * | |
456 | dasd_kmalloc_request(char *, int, int, struct dasd_device *); | |
457 | struct dasd_ccw_req * | |
458 | dasd_smalloc_request(char *, int, int, struct dasd_device *); | |
459 | void dasd_kfree_request(struct dasd_ccw_req *, struct dasd_device *); | |
460 | void dasd_sfree_request(struct dasd_ccw_req *, struct dasd_device *); | |
461 | ||
462 | static inline int | |
463 | dasd_kmalloc_set_cda(struct ccw1 *ccw, void *cda, struct dasd_device *device) | |
464 | { | |
465 | return set_normalized_cda(ccw, cda); | |
466 | } | |
467 | ||
468 | struct dasd_device *dasd_alloc_device(void); | |
469 | void dasd_free_device(struct dasd_device *); | |
470 | ||
471 | void dasd_enable_device(struct dasd_device *); | |
472 | void dasd_set_target_state(struct dasd_device *, int); | |
473 | void dasd_kick_device(struct dasd_device *); | |
474 | ||
475 | void dasd_add_request_head(struct dasd_ccw_req *); | |
476 | void dasd_add_request_tail(struct dasd_ccw_req *); | |
477 | int dasd_start_IO(struct dasd_ccw_req *); | |
478 | int dasd_term_IO(struct dasd_ccw_req *); | |
479 | void dasd_schedule_bh(struct dasd_device *); | |
480 | int dasd_sleep_on(struct dasd_ccw_req *); | |
481 | int dasd_sleep_on_immediatly(struct dasd_ccw_req *); | |
482 | int dasd_sleep_on_interruptible(struct dasd_ccw_req *); | |
483 | void dasd_set_timer(struct dasd_device *, int); | |
484 | void dasd_clear_timer(struct dasd_device *); | |
485 | int dasd_cancel_req(struct dasd_ccw_req *); | |
486 | int dasd_generic_probe (struct ccw_device *, struct dasd_discipline *); | |
487 | void dasd_generic_remove (struct ccw_device *cdev); | |
488 | int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *); | |
489 | int dasd_generic_set_offline (struct ccw_device *cdev); | |
490 | int dasd_generic_notify(struct ccw_device *, int); | |
491 | void dasd_generic_auto_online (struct ccw_driver *); | |
492 | ||
493 | /* externals in dasd_devmap.c */ | |
494 | extern int dasd_max_devindex; | |
495 | extern int dasd_probeonly; | |
496 | extern int dasd_autodetect; | |
497 | ||
498 | int dasd_devmap_init(void); | |
499 | void dasd_devmap_exit(void); | |
500 | ||
501 | struct dasd_device *dasd_create_device(struct ccw_device *); | |
502 | void dasd_delete_device(struct dasd_device *); | |
503 | ||
504 | int dasd_add_sysfs_files(struct ccw_device *); | |
505 | void dasd_remove_sysfs_files(struct ccw_device *); | |
506 | ||
507 | struct dasd_device *dasd_device_from_cdev(struct ccw_device *); | |
508 | struct dasd_device *dasd_device_from_devindex(int); | |
509 | ||
510 | int dasd_parse(void); | |
511 | int dasd_busid_known(char *); | |
512 | ||
513 | /* externals in dasd_gendisk.c */ | |
514 | int dasd_gendisk_init(void); | |
515 | void dasd_gendisk_exit(void); | |
516 | int dasd_gendisk_alloc(struct dasd_device *); | |
517 | void dasd_gendisk_free(struct dasd_device *); | |
518 | int dasd_scan_partitions(struct dasd_device *); | |
519 | void dasd_destroy_partitions(struct dasd_device *); | |
520 | ||
521 | /* externals in dasd_ioctl.c */ | |
522 | int dasd_ioctl_init(void); | |
523 | void dasd_ioctl_exit(void); | |
524 | int dasd_ioctl_no_register(struct module *, int, dasd_ioctl_fn_t); | |
525 | int dasd_ioctl_no_unregister(struct module *, int, dasd_ioctl_fn_t); | |
526 | int dasd_ioctl(struct inode *, struct file *, unsigned int, unsigned long); | |
527 | ||
528 | /* externals in dasd_proc.c */ | |
529 | int dasd_proc_init(void); | |
530 | void dasd_proc_exit(void); | |
531 | ||
532 | /* externals in dasd_erp.c */ | |
533 | struct dasd_ccw_req *dasd_default_erp_action(struct dasd_ccw_req *); | |
534 | struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *); | |
535 | struct dasd_ccw_req *dasd_alloc_erp_request(char *, int, int, | |
536 | struct dasd_device *); | |
537 | void dasd_free_erp_request(struct dasd_ccw_req *, struct dasd_device *); | |
538 | void dasd_log_sense(struct dasd_ccw_req *, struct irb *); | |
539 | void dasd_log_ccw(struct dasd_ccw_req *, int, __u32); | |
540 | ||
541 | /* externals in dasd_3370_erp.c */ | |
542 | dasd_era_t dasd_3370_erp_examine(struct dasd_ccw_req *, struct irb *); | |
543 | ||
544 | /* externals in dasd_3990_erp.c */ | |
545 | dasd_era_t dasd_3990_erp_examine(struct dasd_ccw_req *, struct irb *); | |
546 | struct dasd_ccw_req *dasd_3990_erp_action(struct dasd_ccw_req *); | |
547 | ||
548 | /* externals in dasd_9336_erp.c */ | |
549 | dasd_era_t dasd_9336_erp_examine(struct dasd_ccw_req *, struct irb *); | |
550 | ||
551 | /* externals in dasd_9336_erp.c */ | |
552 | dasd_era_t dasd_9343_erp_examine(struct dasd_ccw_req *, struct irb *); | |
553 | struct dasd_ccw_req *dasd_9343_erp_action(struct dasd_ccw_req *); | |
554 | ||
555 | #endif /* __KERNEL__ */ | |
556 | ||
557 | #endif /* DASD_H */ | |
558 | ||
559 | /* | |
560 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
561 | * Emacs will notice this stuff at the end of the file and automatically | |
562 | * adjust the settings for this buffer only. This must remain at the end | |
563 | * of the file. | |
564 | * --------------------------------------------------------------------------- | |
565 | * Local variables: | |
566 | * c-indent-level: 4 | |
567 | * c-brace-imaginary-offset: 0 | |
568 | * c-brace-offset: -4 | |
569 | * c-argdecl-indent: 4 | |
570 | * c-label-offset: -4 | |
571 | * c-continued-statement-offset: 4 | |
572 | * c-continued-brace-offset: 0 | |
573 | * indent-tabs-mode: 1 | |
574 | * tab-width: 8 | |
575 | * End: | |
576 | */ |