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 | ||
1da177e4 LT |
16 | /* we keep old device allocation scheme; IOW, minors are still in 0..255 */ |
17 | #define DASD_PER_MAJOR (1U << (MINORBITS - DASD_PARTN_BITS)) | |
18 | #define DASD_PARTN_MASK ((1 << DASD_PARTN_BITS) - 1) | |
19 | ||
20 | /* | |
21 | * States a dasd device can have: | |
22 | * new: the dasd_device structure is allocated. | |
23 | * known: the discipline for the device is identified. | |
24 | * basic: the device can do basic i/o. | |
90f0094d | 25 | * unfmt: the device could not be analyzed (format is unknown). |
1da177e4 LT |
26 | * ready: partition detection is done and the device is can do block io. |
27 | * online: the device accepts requests from the block device queue. | |
28 | * | |
29 | * Things to do for startup state transitions: | |
30 | * new -> known: find discipline for the device and create devfs entries. | |
31 | * known -> basic: request irq line for the device. | |
32 | * basic -> ready: do the initial analysis, e.g. format detection, | |
33 | * do block device setup and detect partitions. | |
34 | * ready -> online: schedule the device tasklet. | |
35 | * Things to do for shutdown state transitions: | |
36 | * online -> ready: just set the new device state. | |
37 | * ready -> basic: flush requests from the block device layer, clear | |
38 | * partition information and reset format information. | |
39 | * basic -> known: terminate all requests and free irq. | |
40 | * known -> new: remove devfs entries and forget discipline. | |
41 | */ | |
42 | ||
43 | #define DASD_STATE_NEW 0 | |
44 | #define DASD_STATE_KNOWN 1 | |
45 | #define DASD_STATE_BASIC 2 | |
90f0094d HH |
46 | #define DASD_STATE_UNFMT 3 |
47 | #define DASD_STATE_READY 4 | |
48 | #define DASD_STATE_ONLINE 5 | |
1da177e4 LT |
49 | |
50 | #include <linux/module.h> | |
51 | #include <linux/wait.h> | |
52 | #include <linux/blkdev.h> | |
1da177e4 LT |
53 | #include <linux/genhd.h> |
54 | #include <linux/hdreg.h> | |
55 | #include <linux/interrupt.h> | |
56 | #include <asm/ccwdev.h> | |
57 | #include <linux/workqueue.h> | |
58 | #include <asm/debug.h> | |
59 | #include <asm/dasd.h> | |
60 | #include <asm/idals.h> | |
61 | ||
62 | /* | |
63 | * SECTION: Type definitions | |
64 | */ | |
65 | struct dasd_device; | |
66 | ||
1da177e4 LT |
67 | typedef enum { |
68 | dasd_era_fatal = -1, /* no chance to recover */ | |
69 | dasd_era_none = 0, /* don't recover, everything alright */ | |
70 | dasd_era_msg = 1, /* don't recover, just report... */ | |
71 | dasd_era_recover = 2 /* recovery action recommended */ | |
72 | } dasd_era_t; | |
73 | ||
74 | /* BIT DEFINITIONS FOR SENSE DATA */ | |
75 | #define DASD_SENSE_BIT_0 0x80 | |
76 | #define DASD_SENSE_BIT_1 0x40 | |
77 | #define DASD_SENSE_BIT_2 0x20 | |
78 | #define DASD_SENSE_BIT_3 0x10 | |
79 | ||
80 | /* | |
81 | * SECTION: MACROs for klogd and s390 debug feature (dbf) | |
82 | */ | |
83 | #define DBF_DEV_EVENT(d_level, d_device, d_str, d_data...) \ | |
84 | do { \ | |
85 | debug_sprintf_event(d_device->debug_area, \ | |
86 | d_level, \ | |
87 | d_str "\n", \ | |
88 | d_data); \ | |
89 | } while(0) | |
90 | ||
91 | #define DBF_DEV_EXC(d_level, d_device, d_str, d_data...) \ | |
92 | do { \ | |
93 | debug_sprintf_exception(d_device->debug_area, \ | |
94 | d_level, \ | |
95 | d_str "\n", \ | |
96 | d_data); \ | |
97 | } while(0) | |
98 | ||
99 | #define DBF_EVENT(d_level, d_str, d_data...)\ | |
100 | do { \ | |
101 | debug_sprintf_event(dasd_debug_area, \ | |
102 | d_level,\ | |
103 | d_str "\n", \ | |
104 | d_data); \ | |
105 | } while(0) | |
106 | ||
107 | #define DBF_EXC(d_level, d_str, d_data...)\ | |
108 | do { \ | |
109 | debug_sprintf_exception(dasd_debug_area, \ | |
110 | d_level,\ | |
111 | d_str "\n", \ | |
112 | d_data); \ | |
113 | } while(0) | |
114 | ||
115 | /* definition of dbf debug levels */ | |
116 | #define DBF_EMERG 0 /* system is unusable */ | |
117 | #define DBF_ALERT 1 /* action must be taken immediately */ | |
118 | #define DBF_CRIT 2 /* critical conditions */ | |
119 | #define DBF_ERR 3 /* error conditions */ | |
120 | #define DBF_WARNING 4 /* warning conditions */ | |
121 | #define DBF_NOTICE 5 /* normal but significant condition */ | |
122 | #define DBF_INFO 6 /* informational */ | |
123 | #define DBF_DEBUG 6 /* debug-level messages */ | |
124 | ||
125 | /* messages to be written via klogd and dbf */ | |
126 | #define DEV_MESSAGE(d_loglevel,d_device,d_string,d_args...)\ | |
127 | do { \ | |
128 | printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \ | |
129 | d_device->cdev->dev.bus_id, d_args); \ | |
130 | DBF_DEV_EVENT(DBF_ALERT, d_device, d_string, d_args); \ | |
131 | } while(0) | |
132 | ||
133 | #define MESSAGE(d_loglevel,d_string,d_args...)\ | |
134 | do { \ | |
135 | printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \ | |
136 | DBF_EVENT(DBF_ALERT, d_string, d_args); \ | |
137 | } while(0) | |
138 | ||
139 | /* messages to be written via klogd only */ | |
140 | #define DEV_MESSAGE_LOG(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 | } while(0) | |
145 | ||
146 | #define MESSAGE_LOG(d_loglevel,d_string,d_args...)\ | |
147 | do { \ | |
148 | printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \ | |
149 | } while(0) | |
150 | ||
151 | struct dasd_ccw_req { | |
152 | unsigned int magic; /* Eye catcher */ | |
153 | struct list_head list; /* list_head for request queueing. */ | |
154 | ||
155 | /* Where to execute what... */ | |
156 | struct dasd_device *device; /* device the request is for */ | |
157 | struct ccw1 *cpaddr; /* address of channel program */ | |
158 | char status; /* status of this request */ | |
159 | short retries; /* A retry counter */ | |
160 | unsigned long flags; /* flags of this request */ | |
161 | ||
162 | /* ... and how */ | |
163 | unsigned long starttime; /* jiffies time of request start */ | |
164 | int expires; /* expiration period in jiffies */ | |
165 | char lpm; /* logical path mask */ | |
166 | void *data; /* pointer to data area */ | |
167 | ||
168 | /* these are important for recovering erroneous requests */ | |
169 | struct irb irb; /* device status in case of an error */ | |
170 | struct dasd_ccw_req *refers; /* ERP-chain queueing. */ | |
171 | void *function; /* originating ERP action */ | |
172 | ||
173 | /* these are for statistics only */ | |
174 | unsigned long long buildclk; /* TOD-clock of request generation */ | |
175 | unsigned long long startclk; /* TOD-clock of request start */ | |
176 | unsigned long long stopclk; /* TOD-clock of request interrupt */ | |
177 | unsigned long long endclk; /* TOD-clock of request termination */ | |
178 | ||
179 | /* Callback that is called after reaching final status. */ | |
180 | void (*callback)(struct dasd_ccw_req *, void *data); | |
181 | void *callback_data; | |
182 | }; | |
183 | ||
138c014d | 184 | /* |
1da177e4 LT |
185 | * dasd_ccw_req -> status can be: |
186 | */ | |
187 | #define DASD_CQR_FILLED 0x00 /* request is ready to be processed */ | |
188 | #define DASD_CQR_QUEUED 0x01 /* request is queued to be processed */ | |
189 | #define DASD_CQR_IN_IO 0x02 /* request is currently in IO */ | |
190 | #define DASD_CQR_DONE 0x03 /* request is completed successfully */ | |
191 | #define DASD_CQR_ERROR 0x04 /* request is completed with error */ | |
192 | #define DASD_CQR_FAILED 0x05 /* request is finally failed */ | |
193 | #define DASD_CQR_CLEAR 0x06 /* request is clear pending */ | |
194 | ||
195 | /* per dasd_ccw_req flags */ | |
196 | #define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */ | |
1c01b8a5 | 197 | #define DASD_CQR_FLAGS_FAILFAST 1 /* FAILFAST */ |
1da177e4 LT |
198 | |
199 | /* Signature for error recovery functions. */ | |
200 | typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *); | |
201 | ||
202 | /* | |
203 | * the struct dasd_discipline is | |
204 | * sth like a table of virtual functions, if you think of dasd_eckd | |
205 | * inheriting dasd... | |
206 | * no, currently we are not planning to reimplement the driver in C++ | |
207 | */ | |
208 | struct dasd_discipline { | |
209 | struct module *owner; | |
210 | char ebcname[8]; /* a name used for tagging and printks */ | |
211 | char name[8]; /* a name used for tagging and printks */ | |
212 | int max_blocks; /* maximum number of blocks to be chained */ | |
213 | ||
214 | struct list_head list; /* used for list of disciplines */ | |
215 | ||
216 | /* | |
217 | * Device recognition functions. check_device is used to verify | |
218 | * the sense data and the information returned by read device | |
219 | * characteristics. It returns 0 if the discipline can be used | |
220 | * for the device in question. | |
221 | * do_analysis is used in the step from device state "basic" to | |
222 | * state "accept". It returns 0 if the device can be made ready, | |
223 | * it returns -EMEDIUMTYPE if the device can't be made ready or | |
224 | * -EAGAIN if do_analysis started a ccw that needs to complete | |
225 | * before the analysis may be repeated. | |
226 | */ | |
227 | int (*check_device)(struct dasd_device *); | |
228 | int (*do_analysis) (struct dasd_device *); | |
229 | ||
230 | /* | |
231 | * Device operation functions. build_cp creates a ccw chain for | |
232 | * a block device request, start_io starts the request and | |
233 | * term_IO cancels it (e.g. in case of a timeout). format_device | |
234 | * returns a ccw chain to be used to format the device. | |
235 | */ | |
236 | struct dasd_ccw_req *(*build_cp) (struct dasd_device *, | |
237 | struct request *); | |
238 | int (*start_IO) (struct dasd_ccw_req *); | |
239 | int (*term_IO) (struct dasd_ccw_req *); | |
240 | struct dasd_ccw_req *(*format_device) (struct dasd_device *, | |
241 | struct format_data_t *); | |
242 | int (*free_cp) (struct dasd_ccw_req *, struct request *); | |
243 | /* | |
244 | * Error recovery functions. examine_error() returns a value that | |
245 | * indicates what to do for an error condition. If examine_error() | |
138c014d | 246 | * returns 'dasd_era_recover' erp_action() is called to create a |
1da177e4 LT |
247 | * special error recovery ccw. erp_postaction() is called after |
248 | * an error recovery ccw has finished its execution. dump_sense | |
249 | * is called for every error condition to print the sense data | |
250 | * to the console. | |
251 | */ | |
252 | dasd_era_t(*examine_error) (struct dasd_ccw_req *, struct irb *); | |
253 | dasd_erp_fn_t(*erp_action) (struct dasd_ccw_req *); | |
254 | dasd_erp_fn_t(*erp_postaction) (struct dasd_ccw_req *); | |
255 | void (*dump_sense) (struct dasd_device *, struct dasd_ccw_req *, | |
256 | struct irb *); | |
257 | ||
258 | /* i/o control functions. */ | |
259 | int (*fill_geometry) (struct dasd_device *, struct hd_geometry *); | |
260 | int (*fill_info) (struct dasd_device *, struct dasd_information2_t *); | |
1107ccfb | 261 | int (*ioctl) (struct dasd_device *, unsigned int, void __user *); |
1da177e4 LT |
262 | }; |
263 | ||
264 | extern struct dasd_discipline *dasd_diag_discipline_pointer; | |
265 | ||
3d052595 HH |
266 | /* |
267 | * Unique identifier for dasd device. | |
268 | */ | |
269 | struct dasd_uid { | |
270 | __u8 alias; | |
271 | char vendor[4]; | |
272 | char serial[15]; | |
273 | __u16 ssid; | |
274 | __u8 unit_addr; | |
275 | }; | |
20c64468 SW |
276 | |
277 | /* | |
278 | * Notification numbers for extended error reporting notifications: | |
279 | * The DASD_EER_DISABLE notification is sent before a dasd_device (and it's | |
280 | * eer pointer) is freed. The error reporting module needs to do all necessary | |
281 | * cleanup steps. | |
282 | * The DASD_EER_TRIGGER notification sends the actual error reports (triggers). | |
283 | */ | |
284 | #define DASD_EER_DISABLE 0 | |
285 | #define DASD_EER_TRIGGER 1 | |
286 | ||
287 | /* Trigger IDs for extended error reporting DASD_EER_TRIGGER notification */ | |
288 | #define DASD_EER_FATALERROR 1 | |
289 | #define DASD_EER_NOPATH 2 | |
290 | #define DASD_EER_STATECHANGE 3 | |
291 | #define DASD_EER_PPRCSUSPEND 4 | |
292 | ||
1da177e4 LT |
293 | struct dasd_device { |
294 | /* Block device stuff. */ | |
295 | struct gendisk *gdp; | |
165125e1 | 296 | struct request_queue *request_queue; |
1da177e4 LT |
297 | spinlock_t request_queue_lock; |
298 | struct block_device *bdev; | |
299 | unsigned int devindex; | |
138c014d HH |
300 | unsigned long blocks; /* size of volume in blocks */ |
301 | unsigned int bp_block; /* bytes per block */ | |
302 | unsigned int s2b_shift; /* log2 (bp_block/512) */ | |
303 | unsigned long flags; /* per device flags */ | |
304 | unsigned short features; /* copy of devmap-features (read-only!) */ | |
1da177e4 | 305 | |
20c64468 SW |
306 | /* extended error reporting stuff (eer) */ |
307 | struct dasd_ccw_req *eer_cqr; | |
308 | ||
1da177e4 LT |
309 | /* Device discipline stuff. */ |
310 | struct dasd_discipline *discipline; | |
aa88861f | 311 | struct dasd_discipline *base_discipline; |
1da177e4 LT |
312 | char *private; |
313 | ||
314 | /* Device state and target state. */ | |
315 | int state, target; | |
316 | int stopped; /* device (ccw_device_start) was stopped */ | |
317 | ||
318 | /* Open and reference count. */ | |
319 | atomic_t ref_count; | |
320 | atomic_t open_count; | |
321 | ||
322 | /* ccw queue and memory for static ccw/erp buffers. */ | |
323 | struct list_head ccw_queue; | |
324 | spinlock_t mem_lock; | |
325 | void *ccw_mem; | |
326 | void *erp_mem; | |
327 | struct list_head ccw_chunks; | |
328 | struct list_head erp_chunks; | |
329 | ||
330 | atomic_t tasklet_scheduled; | |
331 | struct tasklet_struct tasklet; | |
332 | struct work_struct kick_work; | |
333 | struct timer_list timer; | |
334 | ||
335 | debug_info_t *debug_area; | |
336 | ||
337 | struct ccw_device *cdev; | |
338 | ||
339 | #ifdef CONFIG_DASD_PROFILE | |
340 | struct dasd_profile_info_t profile; | |
341 | #endif | |
342 | }; | |
343 | ||
344 | /* reasons why device (ccw_device_start) was stopped */ | |
345 | #define DASD_STOPPED_NOT_ACC 1 /* not accessible */ | |
346 | #define DASD_STOPPED_QUIESCE 2 /* Quiesced */ | |
347 | #define DASD_STOPPED_PENDING 4 /* long busy */ | |
348 | #define DASD_STOPPED_DC_WAIT 8 /* disconnected, wait */ | |
349 | #define DASD_STOPPED_DC_EIO 16 /* disconnected, return -EIO */ | |
350 | ||
351 | /* per device flags */ | |
1da177e4 LT |
352 | #define DASD_FLAG_DSC_ERROR 2 /* return -EIO when disconnected */ |
353 | #define DASD_FLAG_OFFLINE 3 /* device is in offline processing */ | |
20c64468 SW |
354 | #define DASD_FLAG_EER_SNSS 4 /* A SNSS is required */ |
355 | #define DASD_FLAG_EER_IN_USE 5 /* A SNSS request is running */ | |
1da177e4 LT |
356 | |
357 | void dasd_put_device_wake(struct dasd_device *); | |
358 | ||
359 | /* | |
360 | * Reference count inliners | |
361 | */ | |
362 | static inline void | |
363 | dasd_get_device(struct dasd_device *device) | |
364 | { | |
365 | atomic_inc(&device->ref_count); | |
366 | } | |
367 | ||
368 | static inline void | |
369 | dasd_put_device(struct dasd_device *device) | |
370 | { | |
371 | if (atomic_dec_return(&device->ref_count) == 0) | |
372 | dasd_put_device_wake(device); | |
373 | } | |
374 | ||
375 | /* | |
376 | * The static memory in ccw_mem and erp_mem is managed by a sorted | |
377 | * list of free memory chunks. | |
378 | */ | |
379 | struct dasd_mchunk | |
380 | { | |
381 | struct list_head list; | |
382 | unsigned long size; | |
383 | } __attribute__ ((aligned(8))); | |
384 | ||
385 | static inline void | |
386 | dasd_init_chunklist(struct list_head *chunk_list, void *mem, | |
387 | unsigned long size) | |
388 | { | |
389 | struct dasd_mchunk *chunk; | |
390 | ||
391 | INIT_LIST_HEAD(chunk_list); | |
392 | chunk = (struct dasd_mchunk *) mem; | |
393 | chunk->size = size - sizeof(struct dasd_mchunk); | |
394 | list_add(&chunk->list, chunk_list); | |
395 | } | |
396 | ||
397 | static inline void * | |
398 | dasd_alloc_chunk(struct list_head *chunk_list, unsigned long size) | |
399 | { | |
400 | struct dasd_mchunk *chunk, *tmp; | |
401 | ||
402 | size = (size + 7L) & -8L; | |
403 | list_for_each_entry(chunk, chunk_list, list) { | |
404 | if (chunk->size < size) | |
405 | continue; | |
406 | if (chunk->size > size + sizeof(struct dasd_mchunk)) { | |
407 | char *endaddr = (char *) (chunk + 1) + chunk->size; | |
408 | tmp = (struct dasd_mchunk *) (endaddr - size) - 1; | |
409 | tmp->size = size; | |
410 | chunk->size -= size + sizeof(struct dasd_mchunk); | |
411 | chunk = tmp; | |
412 | } else | |
413 | list_del(&chunk->list); | |
414 | return (void *) (chunk + 1); | |
415 | } | |
416 | return NULL; | |
417 | } | |
418 | ||
419 | static inline void | |
420 | dasd_free_chunk(struct list_head *chunk_list, void *mem) | |
421 | { | |
422 | struct dasd_mchunk *chunk, *tmp; | |
423 | struct list_head *p, *left; | |
424 | ||
425 | chunk = (struct dasd_mchunk *) | |
426 | ((char *) mem - sizeof(struct dasd_mchunk)); | |
427 | /* Find out the left neighbour in chunk_list. */ | |
428 | left = chunk_list; | |
429 | list_for_each(p, chunk_list) { | |
430 | if (list_entry(p, struct dasd_mchunk, list) > chunk) | |
431 | break; | |
432 | left = p; | |
433 | } | |
434 | /* Try to merge with right neighbour = next element from left. */ | |
435 | if (left->next != chunk_list) { | |
436 | tmp = list_entry(left->next, struct dasd_mchunk, list); | |
437 | if ((char *) (chunk + 1) + chunk->size == (char *) tmp) { | |
438 | list_del(&tmp->list); | |
439 | chunk->size += tmp->size + sizeof(struct dasd_mchunk); | |
440 | } | |
441 | } | |
442 | /* Try to merge with left neighbour. */ | |
443 | if (left != chunk_list) { | |
444 | tmp = list_entry(left, struct dasd_mchunk, list); | |
445 | if ((char *) (tmp + 1) + tmp->size == (char *) chunk) { | |
446 | tmp->size += chunk->size + sizeof(struct dasd_mchunk); | |
447 | return; | |
448 | } | |
449 | } | |
450 | __list_add(&chunk->list, left, left->next); | |
451 | } | |
452 | ||
453 | /* | |
454 | * Check if bsize is in { 512, 1024, 2048, 4096 } | |
455 | */ | |
456 | static inline int | |
457 | dasd_check_blocksize(int bsize) | |
458 | { | |
459 | if (bsize < 512 || bsize > 4096 || (bsize & (bsize - 1)) != 0) | |
460 | return -EMEDIUMTYPE; | |
461 | return 0; | |
462 | } | |
463 | ||
464 | /* externals in dasd.c */ | |
465 | #define DASD_PROFILE_ON 1 | |
466 | #define DASD_PROFILE_OFF 0 | |
467 | ||
468 | extern debug_info_t *dasd_debug_area; | |
469 | extern struct dasd_profile_info_t dasd_global_profile; | |
470 | extern unsigned int dasd_profile_level; | |
471 | extern struct block_device_operations dasd_device_operations; | |
472 | ||
e18b890b | 473 | extern struct kmem_cache *dasd_page_cache; |
1da177e4 LT |
474 | |
475 | struct dasd_ccw_req * | |
476 | dasd_kmalloc_request(char *, int, int, struct dasd_device *); | |
477 | struct dasd_ccw_req * | |
478 | dasd_smalloc_request(char *, int, int, struct dasd_device *); | |
479 | void dasd_kfree_request(struct dasd_ccw_req *, struct dasd_device *); | |
480 | void dasd_sfree_request(struct dasd_ccw_req *, struct dasd_device *); | |
481 | ||
482 | static inline int | |
483 | dasd_kmalloc_set_cda(struct ccw1 *ccw, void *cda, struct dasd_device *device) | |
484 | { | |
485 | return set_normalized_cda(ccw, cda); | |
486 | } | |
487 | ||
488 | struct dasd_device *dasd_alloc_device(void); | |
489 | void dasd_free_device(struct dasd_device *); | |
490 | ||
491 | void dasd_enable_device(struct dasd_device *); | |
492 | void dasd_set_target_state(struct dasd_device *, int); | |
493 | void dasd_kick_device(struct dasd_device *); | |
494 | ||
495 | void dasd_add_request_head(struct dasd_ccw_req *); | |
496 | void dasd_add_request_tail(struct dasd_ccw_req *); | |
497 | int dasd_start_IO(struct dasd_ccw_req *); | |
498 | int dasd_term_IO(struct dasd_ccw_req *); | |
499 | void dasd_schedule_bh(struct dasd_device *); | |
500 | int dasd_sleep_on(struct dasd_ccw_req *); | |
501 | int dasd_sleep_on_immediatly(struct dasd_ccw_req *); | |
502 | int dasd_sleep_on_interruptible(struct dasd_ccw_req *); | |
503 | void dasd_set_timer(struct dasd_device *, int); | |
504 | void dasd_clear_timer(struct dasd_device *); | |
505 | int dasd_cancel_req(struct dasd_ccw_req *); | |
506 | int dasd_generic_probe (struct ccw_device *, struct dasd_discipline *); | |
507 | void dasd_generic_remove (struct ccw_device *cdev); | |
508 | int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *); | |
509 | int dasd_generic_set_offline (struct ccw_device *cdev); | |
510 | int dasd_generic_notify(struct ccw_device *, int); | |
1da177e4 | 511 | |
17283b56 CH |
512 | int dasd_generic_read_dev_chars(struct dasd_device *, char *, void **, int); |
513 | ||
1da177e4 LT |
514 | /* externals in dasd_devmap.c */ |
515 | extern int dasd_max_devindex; | |
516 | extern int dasd_probeonly; | |
517 | extern int dasd_autodetect; | |
40545573 | 518 | extern int dasd_nopav; |
1da177e4 LT |
519 | |
520 | int dasd_devmap_init(void); | |
521 | void dasd_devmap_exit(void); | |
522 | ||
523 | struct dasd_device *dasd_create_device(struct ccw_device *); | |
524 | void dasd_delete_device(struct dasd_device *); | |
525 | ||
3d052595 HH |
526 | int dasd_get_uid(struct ccw_device *, struct dasd_uid *); |
527 | int dasd_set_uid(struct ccw_device *, struct dasd_uid *); | |
f24acd45 HH |
528 | int dasd_get_feature(struct ccw_device *, int); |
529 | int dasd_set_feature(struct ccw_device *, int, int); | |
530 | ||
1da177e4 LT |
531 | int dasd_add_sysfs_files(struct ccw_device *); |
532 | void dasd_remove_sysfs_files(struct ccw_device *); | |
533 | ||
534 | struct dasd_device *dasd_device_from_cdev(struct ccw_device *); | |
a00bfd71 | 535 | struct dasd_device *dasd_device_from_cdev_locked(struct ccw_device *); |
1da177e4 LT |
536 | struct dasd_device *dasd_device_from_devindex(int); |
537 | ||
538 | int dasd_parse(void); | |
539 | int dasd_busid_known(char *); | |
540 | ||
541 | /* externals in dasd_gendisk.c */ | |
542 | int dasd_gendisk_init(void); | |
543 | void dasd_gendisk_exit(void); | |
544 | int dasd_gendisk_alloc(struct dasd_device *); | |
545 | void dasd_gendisk_free(struct dasd_device *); | |
546 | int dasd_scan_partitions(struct dasd_device *); | |
547 | void dasd_destroy_partitions(struct dasd_device *); | |
548 | ||
549 | /* externals in dasd_ioctl.c */ | |
1da177e4 | 550 | int dasd_ioctl(struct inode *, struct file *, unsigned int, unsigned long); |
8262037f | 551 | long dasd_compat_ioctl(struct file *, unsigned int, unsigned long); |
1da177e4 LT |
552 | |
553 | /* externals in dasd_proc.c */ | |
554 | int dasd_proc_init(void); | |
555 | void dasd_proc_exit(void); | |
556 | ||
557 | /* externals in dasd_erp.c */ | |
558 | struct dasd_ccw_req *dasd_default_erp_action(struct dasd_ccw_req *); | |
559 | struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *); | |
560 | struct dasd_ccw_req *dasd_alloc_erp_request(char *, int, int, | |
561 | struct dasd_device *); | |
562 | void dasd_free_erp_request(struct dasd_ccw_req *, struct dasd_device *); | |
563 | void dasd_log_sense(struct dasd_ccw_req *, struct irb *); | |
1da177e4 LT |
564 | |
565 | /* externals in dasd_3370_erp.c */ | |
566 | dasd_era_t dasd_3370_erp_examine(struct dasd_ccw_req *, struct irb *); | |
567 | ||
568 | /* externals in dasd_3990_erp.c */ | |
569 | dasd_era_t dasd_3990_erp_examine(struct dasd_ccw_req *, struct irb *); | |
570 | struct dasd_ccw_req *dasd_3990_erp_action(struct dasd_ccw_req *); | |
571 | ||
572 | /* externals in dasd_9336_erp.c */ | |
573 | dasd_era_t dasd_9336_erp_examine(struct dasd_ccw_req *, struct irb *); | |
574 | ||
575 | /* externals in dasd_9336_erp.c */ | |
576 | dasd_era_t dasd_9343_erp_examine(struct dasd_ccw_req *, struct irb *); | |
577 | struct dasd_ccw_req *dasd_9343_erp_action(struct dasd_ccw_req *); | |
578 | ||
20c64468 SW |
579 | /* externals in dasd_eer.c */ |
580 | #ifdef CONFIG_DASD_EER | |
581 | int dasd_eer_init(void); | |
582 | void dasd_eer_exit(void); | |
583 | int dasd_eer_enable(struct dasd_device *); | |
584 | void dasd_eer_disable(struct dasd_device *); | |
585 | void dasd_eer_write(struct dasd_device *, struct dasd_ccw_req *cqr, | |
586 | unsigned int id); | |
587 | void dasd_eer_snss(struct dasd_device *); | |
588 | ||
589 | static inline int dasd_eer_enabled(struct dasd_device *device) | |
590 | { | |
591 | return device->eer_cqr != NULL; | |
592 | } | |
593 | #else | |
594 | #define dasd_eer_init() (0) | |
595 | #define dasd_eer_exit() do { } while (0) | |
596 | #define dasd_eer_enable(d) (0) | |
597 | #define dasd_eer_disable(d) do { } while (0) | |
598 | #define dasd_eer_write(d,c,i) do { } while (0) | |
599 | #define dasd_eer_snss(d) do { } while (0) | |
600 | #define dasd_eer_enabled(d) (0) | |
601 | #endif /* CONFIG_DASD_ERR */ | |
602 | ||
1da177e4 LT |
603 | #endif /* __KERNEL__ */ |
604 | ||
605 | #endif /* DASD_H */ |