Commit | Line | Data |
---|---|---|
138c014d | 1 | /* |
1da177e4 LT |
2 | * File...........: linux/drivers/s390/block/dasd_int.h |
3 | * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> | |
138c014d | 4 | * Horst Hummel <Horst.Hummel@de.ibm.com> |
1da177e4 LT |
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 | * | |
1da177e4 LT |
9 | */ |
10 | ||
11 | #ifndef DASD_INT_H | |
12 | #define DASD_INT_H | |
13 | ||
14 | #ifdef __KERNEL__ | |
15 | ||
16 | /* erp debugging in dasd.c and dasd_3990_erp.c */ | |
17 | #define ERP_DEBUG | |
18 | ||
19 | ||
20 | /* we keep old device allocation scheme; IOW, minors are still in 0..255 */ | |
21 | #define DASD_PER_MAJOR (1U << (MINORBITS - DASD_PARTN_BITS)) | |
22 | #define DASD_PARTN_MASK ((1 << DASD_PARTN_BITS) - 1) | |
23 | ||
24 | /* | |
25 | * States a dasd device can have: | |
26 | * new: the dasd_device structure is allocated. | |
27 | * known: the discipline for the device is identified. | |
28 | * basic: the device can do basic i/o. | |
90f0094d | 29 | * unfmt: the device could not be analyzed (format is unknown). |
1da177e4 LT |
30 | * ready: partition detection is done and the device is can do block io. |
31 | * online: the device accepts requests from the block device queue. | |
32 | * | |
33 | * Things to do for startup state transitions: | |
34 | * new -> known: find discipline for the device and create devfs entries. | |
35 | * known -> basic: request irq line for the device. | |
36 | * basic -> ready: do the initial analysis, e.g. format detection, | |
37 | * do block device setup and detect partitions. | |
38 | * ready -> online: schedule the device tasklet. | |
39 | * Things to do for shutdown state transitions: | |
40 | * online -> ready: just set the new device state. | |
41 | * ready -> basic: flush requests from the block device layer, clear | |
42 | * partition information and reset format information. | |
43 | * basic -> known: terminate all requests and free irq. | |
44 | * known -> new: remove devfs entries and forget discipline. | |
45 | */ | |
46 | ||
47 | #define DASD_STATE_NEW 0 | |
48 | #define DASD_STATE_KNOWN 1 | |
49 | #define DASD_STATE_BASIC 2 | |
90f0094d HH |
50 | #define DASD_STATE_UNFMT 3 |
51 | #define DASD_STATE_READY 4 | |
52 | #define DASD_STATE_ONLINE 5 | |
1da177e4 LT |
53 | |
54 | #include <linux/module.h> | |
55 | #include <linux/wait.h> | |
56 | #include <linux/blkdev.h> | |
1da177e4 LT |
57 | #include <linux/genhd.h> |
58 | #include <linux/hdreg.h> | |
59 | #include <linux/interrupt.h> | |
60 | #include <asm/ccwdev.h> | |
61 | #include <linux/workqueue.h> | |
62 | #include <asm/debug.h> | |
63 | #include <asm/dasd.h> | |
64 | #include <asm/idals.h> | |
65 | ||
66 | /* | |
67 | * SECTION: Type definitions | |
68 | */ | |
69 | struct dasd_device; | |
70 | ||
1da177e4 LT |
71 | typedef enum { |
72 | dasd_era_fatal = -1, /* no chance to recover */ | |
73 | dasd_era_none = 0, /* don't recover, everything alright */ | |
74 | dasd_era_msg = 1, /* don't recover, just report... */ | |
75 | dasd_era_recover = 2 /* recovery action recommended */ | |
76 | } dasd_era_t; | |
77 | ||
78 | /* BIT DEFINITIONS FOR SENSE DATA */ | |
79 | #define DASD_SENSE_BIT_0 0x80 | |
80 | #define DASD_SENSE_BIT_1 0x40 | |
81 | #define DASD_SENSE_BIT_2 0x20 | |
82 | #define DASD_SENSE_BIT_3 0x10 | |
83 | ||
84 | /* | |
85 | * SECTION: MACROs for klogd and s390 debug feature (dbf) | |
86 | */ | |
87 | #define DBF_DEV_EVENT(d_level, d_device, d_str, d_data...) \ | |
88 | do { \ | |
89 | debug_sprintf_event(d_device->debug_area, \ | |
90 | d_level, \ | |
91 | d_str "\n", \ | |
92 | d_data); \ | |
93 | } while(0) | |
94 | ||
95 | #define DBF_DEV_EXC(d_level, d_device, d_str, d_data...) \ | |
96 | do { \ | |
97 | debug_sprintf_exception(d_device->debug_area, \ | |
98 | d_level, \ | |
99 | d_str "\n", \ | |
100 | d_data); \ | |
101 | } while(0) | |
102 | ||
103 | #define DBF_EVENT(d_level, d_str, d_data...)\ | |
104 | do { \ | |
105 | debug_sprintf_event(dasd_debug_area, \ | |
106 | d_level,\ | |
107 | d_str "\n", \ | |
108 | d_data); \ | |
109 | } while(0) | |
110 | ||
111 | #define DBF_EXC(d_level, d_str, d_data...)\ | |
112 | do { \ | |
113 | debug_sprintf_exception(dasd_debug_area, \ | |
114 | d_level,\ | |
115 | d_str "\n", \ | |
116 | d_data); \ | |
117 | } while(0) | |
118 | ||
119 | /* definition of dbf debug levels */ | |
120 | #define DBF_EMERG 0 /* system is unusable */ | |
121 | #define DBF_ALERT 1 /* action must be taken immediately */ | |
122 | #define DBF_CRIT 2 /* critical conditions */ | |
123 | #define DBF_ERR 3 /* error conditions */ | |
124 | #define DBF_WARNING 4 /* warning conditions */ | |
125 | #define DBF_NOTICE 5 /* normal but significant condition */ | |
126 | #define DBF_INFO 6 /* informational */ | |
127 | #define DBF_DEBUG 6 /* debug-level messages */ | |
128 | ||
129 | /* messages to be written via klogd and dbf */ | |
130 | #define DEV_MESSAGE(d_loglevel,d_device,d_string,d_args...)\ | |
131 | do { \ | |
132 | printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \ | |
133 | d_device->cdev->dev.bus_id, d_args); \ | |
134 | DBF_DEV_EVENT(DBF_ALERT, d_device, d_string, d_args); \ | |
135 | } while(0) | |
136 | ||
137 | #define MESSAGE(d_loglevel,d_string,d_args...)\ | |
138 | do { \ | |
139 | printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \ | |
140 | DBF_EVENT(DBF_ALERT, d_string, d_args); \ | |
141 | } while(0) | |
142 | ||
143 | /* messages to be written via klogd only */ | |
144 | #define DEV_MESSAGE_LOG(d_loglevel,d_device,d_string,d_args...)\ | |
145 | do { \ | |
146 | printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \ | |
147 | d_device->cdev->dev.bus_id, d_args); \ | |
148 | } while(0) | |
149 | ||
150 | #define MESSAGE_LOG(d_loglevel,d_string,d_args...)\ | |
151 | do { \ | |
152 | printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \ | |
153 | } while(0) | |
154 | ||
155 | struct dasd_ccw_req { | |
156 | unsigned int magic; /* Eye catcher */ | |
157 | struct list_head list; /* list_head for request queueing. */ | |
158 | ||
159 | /* Where to execute what... */ | |
160 | struct dasd_device *device; /* device the request is for */ | |
161 | struct ccw1 *cpaddr; /* address of channel program */ | |
162 | char status; /* status of this request */ | |
163 | short retries; /* A retry counter */ | |
164 | unsigned long flags; /* flags of this request */ | |
165 | ||
166 | /* ... and how */ | |
167 | unsigned long starttime; /* jiffies time of request start */ | |
168 | int expires; /* expiration period in jiffies */ | |
169 | char lpm; /* logical path mask */ | |
170 | void *data; /* pointer to data area */ | |
171 | ||
172 | /* these are important for recovering erroneous requests */ | |
173 | struct irb irb; /* device status in case of an error */ | |
174 | struct dasd_ccw_req *refers; /* ERP-chain queueing. */ | |
175 | void *function; /* originating ERP action */ | |
176 | ||
177 | /* these are for statistics only */ | |
178 | unsigned long long buildclk; /* TOD-clock of request generation */ | |
179 | unsigned long long startclk; /* TOD-clock of request start */ | |
180 | unsigned long long stopclk; /* TOD-clock of request interrupt */ | |
181 | unsigned long long endclk; /* TOD-clock of request termination */ | |
182 | ||
183 | /* Callback that is called after reaching final status. */ | |
184 | void (*callback)(struct dasd_ccw_req *, void *data); | |
185 | void *callback_data; | |
186 | }; | |
187 | ||
138c014d | 188 | /* |
1da177e4 LT |
189 | * dasd_ccw_req -> status can be: |
190 | */ | |
191 | #define DASD_CQR_FILLED 0x00 /* request is ready to be processed */ | |
192 | #define DASD_CQR_QUEUED 0x01 /* request is queued to be processed */ | |
193 | #define DASD_CQR_IN_IO 0x02 /* request is currently in IO */ | |
194 | #define DASD_CQR_DONE 0x03 /* request is completed successfully */ | |
195 | #define DASD_CQR_ERROR 0x04 /* request is completed with error */ | |
196 | #define DASD_CQR_FAILED 0x05 /* request is finally failed */ | |
197 | #define DASD_CQR_CLEAR 0x06 /* request is clear pending */ | |
198 | ||
199 | /* per dasd_ccw_req flags */ | |
200 | #define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */ | |
1c01b8a5 | 201 | #define DASD_CQR_FLAGS_FAILFAST 1 /* FAILFAST */ |
1da177e4 LT |
202 | |
203 | /* Signature for error recovery functions. */ | |
204 | typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *); | |
205 | ||
206 | /* | |
207 | * the struct dasd_discipline is | |
208 | * sth like a table of virtual functions, if you think of dasd_eckd | |
209 | * inheriting dasd... | |
210 | * no, currently we are not planning to reimplement the driver in C++ | |
211 | */ | |
212 | struct dasd_discipline { | |
213 | struct module *owner; | |
214 | char ebcname[8]; /* a name used for tagging and printks */ | |
215 | char name[8]; /* a name used for tagging and printks */ | |
216 | int max_blocks; /* maximum number of blocks to be chained */ | |
217 | ||
218 | struct list_head list; /* used for list of disciplines */ | |
219 | ||
220 | /* | |
221 | * Device recognition functions. check_device is used to verify | |
222 | * the sense data and the information returned by read device | |
223 | * characteristics. It returns 0 if the discipline can be used | |
224 | * for the device in question. | |
225 | * do_analysis is used in the step from device state "basic" to | |
226 | * state "accept". It returns 0 if the device can be made ready, | |
227 | * it returns -EMEDIUMTYPE if the device can't be made ready or | |
228 | * -EAGAIN if do_analysis started a ccw that needs to complete | |
229 | * before the analysis may be repeated. | |
230 | */ | |
231 | int (*check_device)(struct dasd_device *); | |
232 | int (*do_analysis) (struct dasd_device *); | |
233 | ||
234 | /* | |
235 | * Device operation functions. build_cp creates a ccw chain for | |
236 | * a block device request, start_io starts the request and | |
237 | * term_IO cancels it (e.g. in case of a timeout). format_device | |
238 | * returns a ccw chain to be used to format the device. | |
239 | */ | |
240 | struct dasd_ccw_req *(*build_cp) (struct dasd_device *, | |
241 | struct request *); | |
242 | int (*start_IO) (struct dasd_ccw_req *); | |
243 | int (*term_IO) (struct dasd_ccw_req *); | |
244 | struct dasd_ccw_req *(*format_device) (struct dasd_device *, | |
245 | struct format_data_t *); | |
246 | int (*free_cp) (struct dasd_ccw_req *, struct request *); | |
247 | /* | |
248 | * Error recovery functions. examine_error() returns a value that | |
249 | * indicates what to do for an error condition. If examine_error() | |
138c014d | 250 | * returns 'dasd_era_recover' erp_action() is called to create a |
1da177e4 LT |
251 | * special error recovery ccw. erp_postaction() is called after |
252 | * an error recovery ccw has finished its execution. dump_sense | |
253 | * is called for every error condition to print the sense data | |
254 | * to the console. | |
255 | */ | |
256 | dasd_era_t(*examine_error) (struct dasd_ccw_req *, struct irb *); | |
257 | dasd_erp_fn_t(*erp_action) (struct dasd_ccw_req *); | |
258 | dasd_erp_fn_t(*erp_postaction) (struct dasd_ccw_req *); | |
259 | void (*dump_sense) (struct dasd_device *, struct dasd_ccw_req *, | |
260 | struct irb *); | |
261 | ||
262 | /* i/o control functions. */ | |
263 | int (*fill_geometry) (struct dasd_device *, struct hd_geometry *); | |
264 | int (*fill_info) (struct dasd_device *, struct dasd_information2_t *); | |
1107ccfb | 265 | int (*ioctl) (struct dasd_device *, unsigned int, void __user *); |
1da177e4 LT |
266 | }; |
267 | ||
268 | extern struct dasd_discipline *dasd_diag_discipline_pointer; | |
269 | ||
3d052595 HH |
270 | /* |
271 | * Unique identifier for dasd device. | |
272 | */ | |
273 | struct dasd_uid { | |
274 | __u8 alias; | |
275 | char vendor[4]; | |
276 | char serial[15]; | |
277 | __u16 ssid; | |
278 | __u8 unit_addr; | |
279 | }; | |
20c64468 SW |
280 | |
281 | /* | |
282 | * Notification numbers for extended error reporting notifications: | |
283 | * The DASD_EER_DISABLE notification is sent before a dasd_device (and it's | |
284 | * eer pointer) is freed. The error reporting module needs to do all necessary | |
285 | * cleanup steps. | |
286 | * The DASD_EER_TRIGGER notification sends the actual error reports (triggers). | |
287 | */ | |
288 | #define DASD_EER_DISABLE 0 | |
289 | #define DASD_EER_TRIGGER 1 | |
290 | ||
291 | /* Trigger IDs for extended error reporting DASD_EER_TRIGGER notification */ | |
292 | #define DASD_EER_FATALERROR 1 | |
293 | #define DASD_EER_NOPATH 2 | |
294 | #define DASD_EER_STATECHANGE 3 | |
295 | #define DASD_EER_PPRCSUSPEND 4 | |
296 | ||
1da177e4 LT |
297 | struct dasd_device { |
298 | /* Block device stuff. */ | |
299 | struct gendisk *gdp; | |
300 | request_queue_t *request_queue; | |
301 | spinlock_t request_queue_lock; | |
302 | struct block_device *bdev; | |
303 | unsigned int devindex; | |
138c014d HH |
304 | unsigned long blocks; /* size of volume in blocks */ |
305 | unsigned int bp_block; /* bytes per block */ | |
306 | unsigned int s2b_shift; /* log2 (bp_block/512) */ | |
307 | unsigned long flags; /* per device flags */ | |
308 | unsigned short features; /* copy of devmap-features (read-only!) */ | |
1da177e4 | 309 | |
20c64468 SW |
310 | /* extended error reporting stuff (eer) */ |
311 | struct dasd_ccw_req *eer_cqr; | |
312 | ||
1da177e4 LT |
313 | /* Device discipline stuff. */ |
314 | struct dasd_discipline *discipline; | |
aa88861f | 315 | struct dasd_discipline *base_discipline; |
1da177e4 LT |
316 | char *private; |
317 | ||
318 | /* Device state and target state. */ | |
319 | int state, target; | |
320 | int stopped; /* device (ccw_device_start) was stopped */ | |
321 | ||
322 | /* Open and reference count. */ | |
323 | atomic_t ref_count; | |
324 | atomic_t open_count; | |
325 | ||
326 | /* ccw queue and memory for static ccw/erp buffers. */ | |
327 | struct list_head ccw_queue; | |
328 | spinlock_t mem_lock; | |
329 | void *ccw_mem; | |
330 | void *erp_mem; | |
331 | struct list_head ccw_chunks; | |
332 | struct list_head erp_chunks; | |
333 | ||
334 | atomic_t tasklet_scheduled; | |
335 | struct tasklet_struct tasklet; | |
336 | struct work_struct kick_work; | |
337 | struct timer_list timer; | |
338 | ||
339 | debug_info_t *debug_area; | |
340 | ||
341 | struct ccw_device *cdev; | |
342 | ||
343 | #ifdef CONFIG_DASD_PROFILE | |
344 | struct dasd_profile_info_t profile; | |
345 | #endif | |
346 | }; | |
347 | ||
348 | /* reasons why device (ccw_device_start) was stopped */ | |
349 | #define DASD_STOPPED_NOT_ACC 1 /* not accessible */ | |
350 | #define DASD_STOPPED_QUIESCE 2 /* Quiesced */ | |
351 | #define DASD_STOPPED_PENDING 4 /* long busy */ | |
352 | #define DASD_STOPPED_DC_WAIT 8 /* disconnected, wait */ | |
353 | #define DASD_STOPPED_DC_EIO 16 /* disconnected, return -EIO */ | |
354 | ||
355 | /* per device flags */ | |
1da177e4 LT |
356 | #define DASD_FLAG_DSC_ERROR 2 /* return -EIO when disconnected */ |
357 | #define DASD_FLAG_OFFLINE 3 /* device is in offline processing */ | |
20c64468 SW |
358 | #define DASD_FLAG_EER_SNSS 4 /* A SNSS is required */ |
359 | #define DASD_FLAG_EER_IN_USE 5 /* A SNSS request is running */ | |
1da177e4 LT |
360 | |
361 | void dasd_put_device_wake(struct dasd_device *); | |
362 | ||
363 | /* | |
364 | * Reference count inliners | |
365 | */ | |
366 | static inline void | |
367 | dasd_get_device(struct dasd_device *device) | |
368 | { | |
369 | atomic_inc(&device->ref_count); | |
370 | } | |
371 | ||
372 | static inline void | |
373 | dasd_put_device(struct dasd_device *device) | |
374 | { | |
375 | if (atomic_dec_return(&device->ref_count) == 0) | |
376 | dasd_put_device_wake(device); | |
377 | } | |
378 | ||
379 | /* | |
380 | * The static memory in ccw_mem and erp_mem is managed by a sorted | |
381 | * list of free memory chunks. | |
382 | */ | |
383 | struct dasd_mchunk | |
384 | { | |
385 | struct list_head list; | |
386 | unsigned long size; | |
387 | } __attribute__ ((aligned(8))); | |
388 | ||
389 | static inline void | |
390 | dasd_init_chunklist(struct list_head *chunk_list, void *mem, | |
391 | unsigned long size) | |
392 | { | |
393 | struct dasd_mchunk *chunk; | |
394 | ||
395 | INIT_LIST_HEAD(chunk_list); | |
396 | chunk = (struct dasd_mchunk *) mem; | |
397 | chunk->size = size - sizeof(struct dasd_mchunk); | |
398 | list_add(&chunk->list, chunk_list); | |
399 | } | |
400 | ||
401 | static inline void * | |
402 | dasd_alloc_chunk(struct list_head *chunk_list, unsigned long size) | |
403 | { | |
404 | struct dasd_mchunk *chunk, *tmp; | |
405 | ||
406 | size = (size + 7L) & -8L; | |
407 | list_for_each_entry(chunk, chunk_list, list) { | |
408 | if (chunk->size < size) | |
409 | continue; | |
410 | if (chunk->size > size + sizeof(struct dasd_mchunk)) { | |
411 | char *endaddr = (char *) (chunk + 1) + chunk->size; | |
412 | tmp = (struct dasd_mchunk *) (endaddr - size) - 1; | |
413 | tmp->size = size; | |
414 | chunk->size -= size + sizeof(struct dasd_mchunk); | |
415 | chunk = tmp; | |
416 | } else | |
417 | list_del(&chunk->list); | |
418 | return (void *) (chunk + 1); | |
419 | } | |
420 | return NULL; | |
421 | } | |
422 | ||
423 | static inline void | |
424 | dasd_free_chunk(struct list_head *chunk_list, void *mem) | |
425 | { | |
426 | struct dasd_mchunk *chunk, *tmp; | |
427 | struct list_head *p, *left; | |
428 | ||
429 | chunk = (struct dasd_mchunk *) | |
430 | ((char *) mem - sizeof(struct dasd_mchunk)); | |
431 | /* Find out the left neighbour in chunk_list. */ | |
432 | left = chunk_list; | |
433 | list_for_each(p, chunk_list) { | |
434 | if (list_entry(p, struct dasd_mchunk, list) > chunk) | |
435 | break; | |
436 | left = p; | |
437 | } | |
438 | /* Try to merge with right neighbour = next element from left. */ | |
439 | if (left->next != chunk_list) { | |
440 | tmp = list_entry(left->next, struct dasd_mchunk, list); | |
441 | if ((char *) (chunk + 1) + chunk->size == (char *) tmp) { | |
442 | list_del(&tmp->list); | |
443 | chunk->size += tmp->size + sizeof(struct dasd_mchunk); | |
444 | } | |
445 | } | |
446 | /* Try to merge with left neighbour. */ | |
447 | if (left != chunk_list) { | |
448 | tmp = list_entry(left, struct dasd_mchunk, list); | |
449 | if ((char *) (tmp + 1) + tmp->size == (char *) chunk) { | |
450 | tmp->size += chunk->size + sizeof(struct dasd_mchunk); | |
451 | return; | |
452 | } | |
453 | } | |
454 | __list_add(&chunk->list, left, left->next); | |
455 | } | |
456 | ||
457 | /* | |
458 | * Check if bsize is in { 512, 1024, 2048, 4096 } | |
459 | */ | |
460 | static inline int | |
461 | dasd_check_blocksize(int bsize) | |
462 | { | |
463 | if (bsize < 512 || bsize > 4096 || (bsize & (bsize - 1)) != 0) | |
464 | return -EMEDIUMTYPE; | |
465 | return 0; | |
466 | } | |
467 | ||
468 | /* externals in dasd.c */ | |
469 | #define DASD_PROFILE_ON 1 | |
470 | #define DASD_PROFILE_OFF 0 | |
471 | ||
472 | extern debug_info_t *dasd_debug_area; | |
473 | extern struct dasd_profile_info_t dasd_global_profile; | |
474 | extern unsigned int dasd_profile_level; | |
475 | extern struct block_device_operations dasd_device_operations; | |
476 | ||
477 | extern kmem_cache_t *dasd_page_cache; | |
478 | ||
479 | struct dasd_ccw_req * | |
480 | dasd_kmalloc_request(char *, int, int, struct dasd_device *); | |
481 | struct dasd_ccw_req * | |
482 | dasd_smalloc_request(char *, int, int, struct dasd_device *); | |
483 | void dasd_kfree_request(struct dasd_ccw_req *, struct dasd_device *); | |
484 | void dasd_sfree_request(struct dasd_ccw_req *, struct dasd_device *); | |
485 | ||
486 | static inline int | |
487 | dasd_kmalloc_set_cda(struct ccw1 *ccw, void *cda, struct dasd_device *device) | |
488 | { | |
489 | return set_normalized_cda(ccw, cda); | |
490 | } | |
491 | ||
492 | struct dasd_device *dasd_alloc_device(void); | |
493 | void dasd_free_device(struct dasd_device *); | |
494 | ||
495 | void dasd_enable_device(struct dasd_device *); | |
496 | void dasd_set_target_state(struct dasd_device *, int); | |
497 | void dasd_kick_device(struct dasd_device *); | |
498 | ||
499 | void dasd_add_request_head(struct dasd_ccw_req *); | |
500 | void dasd_add_request_tail(struct dasd_ccw_req *); | |
501 | int dasd_start_IO(struct dasd_ccw_req *); | |
502 | int dasd_term_IO(struct dasd_ccw_req *); | |
503 | void dasd_schedule_bh(struct dasd_device *); | |
504 | int dasd_sleep_on(struct dasd_ccw_req *); | |
505 | int dasd_sleep_on_immediatly(struct dasd_ccw_req *); | |
506 | int dasd_sleep_on_interruptible(struct dasd_ccw_req *); | |
507 | void dasd_set_timer(struct dasd_device *, int); | |
508 | void dasd_clear_timer(struct dasd_device *); | |
509 | int dasd_cancel_req(struct dasd_ccw_req *); | |
510 | int dasd_generic_probe (struct ccw_device *, struct dasd_discipline *); | |
511 | void dasd_generic_remove (struct ccw_device *cdev); | |
512 | int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *); | |
513 | int dasd_generic_set_offline (struct ccw_device *cdev); | |
514 | int dasd_generic_notify(struct ccw_device *, int); | |
1da177e4 LT |
515 | |
516 | /* externals in dasd_devmap.c */ | |
517 | extern int dasd_max_devindex; | |
518 | extern int dasd_probeonly; | |
519 | extern int dasd_autodetect; | |
40545573 | 520 | extern int dasd_nopav; |
1da177e4 LT |
521 | |
522 | int dasd_devmap_init(void); | |
523 | void dasd_devmap_exit(void); | |
524 | ||
525 | struct dasd_device *dasd_create_device(struct ccw_device *); | |
526 | void dasd_delete_device(struct dasd_device *); | |
527 | ||
3d052595 HH |
528 | int dasd_get_uid(struct ccw_device *, struct dasd_uid *); |
529 | int dasd_set_uid(struct ccw_device *, struct dasd_uid *); | |
f24acd45 HH |
530 | int dasd_get_feature(struct ccw_device *, int); |
531 | int dasd_set_feature(struct ccw_device *, int, int); | |
532 | ||
1da177e4 LT |
533 | int dasd_add_sysfs_files(struct ccw_device *); |
534 | void dasd_remove_sysfs_files(struct ccw_device *); | |
535 | ||
536 | struct dasd_device *dasd_device_from_cdev(struct ccw_device *); | |
a00bfd71 | 537 | struct dasd_device *dasd_device_from_cdev_locked(struct ccw_device *); |
1da177e4 LT |
538 | struct dasd_device *dasd_device_from_devindex(int); |
539 | ||
540 | int dasd_parse(void); | |
541 | int dasd_busid_known(char *); | |
542 | ||
543 | /* externals in dasd_gendisk.c */ | |
544 | int dasd_gendisk_init(void); | |
545 | void dasd_gendisk_exit(void); | |
546 | int dasd_gendisk_alloc(struct dasd_device *); | |
547 | void dasd_gendisk_free(struct dasd_device *); | |
548 | int dasd_scan_partitions(struct dasd_device *); | |
549 | void dasd_destroy_partitions(struct dasd_device *); | |
550 | ||
551 | /* externals in dasd_ioctl.c */ | |
1da177e4 | 552 | int dasd_ioctl(struct inode *, struct file *, unsigned int, unsigned long); |
8262037f | 553 | long dasd_compat_ioctl(struct file *, unsigned int, unsigned long); |
1da177e4 LT |
554 | |
555 | /* externals in dasd_proc.c */ | |
556 | int dasd_proc_init(void); | |
557 | void dasd_proc_exit(void); | |
558 | ||
559 | /* externals in dasd_erp.c */ | |
560 | struct dasd_ccw_req *dasd_default_erp_action(struct dasd_ccw_req *); | |
561 | struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *); | |
562 | struct dasd_ccw_req *dasd_alloc_erp_request(char *, int, int, | |
563 | struct dasd_device *); | |
564 | void dasd_free_erp_request(struct dasd_ccw_req *, struct dasd_device *); | |
565 | void dasd_log_sense(struct dasd_ccw_req *, struct irb *); | |
566 | void dasd_log_ccw(struct dasd_ccw_req *, int, __u32); | |
567 | ||
568 | /* externals in dasd_3370_erp.c */ | |
569 | dasd_era_t dasd_3370_erp_examine(struct dasd_ccw_req *, struct irb *); | |
570 | ||
571 | /* externals in dasd_3990_erp.c */ | |
572 | dasd_era_t dasd_3990_erp_examine(struct dasd_ccw_req *, struct irb *); | |
573 | struct dasd_ccw_req *dasd_3990_erp_action(struct dasd_ccw_req *); | |
574 | ||
575 | /* externals in dasd_9336_erp.c */ | |
576 | dasd_era_t dasd_9336_erp_examine(struct dasd_ccw_req *, struct irb *); | |
577 | ||
578 | /* externals in dasd_9336_erp.c */ | |
579 | dasd_era_t dasd_9343_erp_examine(struct dasd_ccw_req *, struct irb *); | |
580 | struct dasd_ccw_req *dasd_9343_erp_action(struct dasd_ccw_req *); | |
581 | ||
20c64468 SW |
582 | /* externals in dasd_eer.c */ |
583 | #ifdef CONFIG_DASD_EER | |
584 | int dasd_eer_init(void); | |
585 | void dasd_eer_exit(void); | |
586 | int dasd_eer_enable(struct dasd_device *); | |
587 | void dasd_eer_disable(struct dasd_device *); | |
588 | void dasd_eer_write(struct dasd_device *, struct dasd_ccw_req *cqr, | |
589 | unsigned int id); | |
590 | void dasd_eer_snss(struct dasd_device *); | |
591 | ||
592 | static inline int dasd_eer_enabled(struct dasd_device *device) | |
593 | { | |
594 | return device->eer_cqr != NULL; | |
595 | } | |
596 | #else | |
597 | #define dasd_eer_init() (0) | |
598 | #define dasd_eer_exit() do { } while (0) | |
599 | #define dasd_eer_enable(d) (0) | |
600 | #define dasd_eer_disable(d) do { } while (0) | |
601 | #define dasd_eer_write(d,c,i) do { } while (0) | |
602 | #define dasd_eer_snss(d) do { } while (0) | |
603 | #define dasd_eer_enabled(d) (0) | |
604 | #endif /* CONFIG_DASD_ERR */ | |
605 | ||
1da177e4 LT |
606 | #endif /* __KERNEL__ */ |
607 | ||
608 | #endif /* DASD_H */ |