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10#ifndef DASD_INT_H
11#define DASD_INT_H
12
13
14#define DASD_PER_MAJOR (1U << (MINORBITS - DASD_PARTN_BITS))
15#define DASD_PARTN_MASK ((1 << DASD_PARTN_BITS) - 1)
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38
39
40#define DASD_STATE_NEW 0
41#define DASD_STATE_KNOWN 1
42#define DASD_STATE_BASIC 2
43#define DASD_STATE_UNFMT 3
44#define DASD_STATE_READY 4
45#define DASD_STATE_ONLINE 5
46
47#include <linux/module.h>
48#include <linux/wait.h>
49#include <linux/blkdev.h>
50#include <linux/genhd.h>
51#include <linux/hdreg.h>
52#include <linux/interrupt.h>
53#include <linux/log2.h>
54#include <asm/ccwdev.h>
55#include <linux/workqueue.h>
56#include <asm/debug.h>
57#include <asm/dasd.h>
58#include <asm/idals.h>
59#include <linux/bitops.h>
60#include <linux/blk-mq.h>
61
62
63#define DASD_ECKD_MAGIC 0xC5C3D2C4
64#define DASD_DIAG_MAGIC 0xC4C9C1C7
65#define DASD_FBA_MAGIC 0xC6C2C140
66
67
68
69
70struct dasd_device;
71struct dasd_block;
72
73
74#define DASD_SENSE_BIT_0 0x80
75#define DASD_SENSE_BIT_1 0x40
76#define DASD_SENSE_BIT_2 0x20
77#define DASD_SENSE_BIT_3 0x10
78
79
80#define DASD_SIM_SENSE 0x0F
81#define DASD_SIM_MSG_TO_OP 0x03
82#define DASD_SIM_LOG 0x0C
83
84
85#define CDEV_NESTED_FIRST 1
86#define CDEV_NESTED_SECOND 2
87
88
89
90
91#define DBF_DEV_EVENT(d_level, d_device, d_str, d_data...) \
92do { \
93 debug_sprintf_event(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...)\
100do { \
101 debug_sprintf_event(dasd_debug_area, \
102 d_level,\
103 d_str "\n", \
104 d_data); \
105} while(0)
106
107#define DBF_EVENT_DEVID(d_level, d_cdev, d_str, d_data...) \
108do { \
109 struct ccw_dev_id __dev_id; \
110 ccw_device_get_id(d_cdev, &__dev_id); \
111 debug_sprintf_event(dasd_debug_area, \
112 d_level, \
113 "0.%x.%04x " d_str "\n", \
114 __dev_id.ssid, __dev_id.devno, d_data); \
115} while (0)
116
117
118#define ERRORLENGTH 30
119
120
121#define DBF_EMERG 0
122#define DBF_ALERT 1
123#define DBF_CRIT 2
124#define DBF_ERR 3
125#define DBF_WARNING 4
126#define DBF_NOTICE 5
127#define DBF_INFO 6
128#define DBF_DEBUG 6
129
130
131#define DEV_MESSAGE(d_loglevel,d_device,d_string,d_args...)\
132do { \
133 printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \
134 dev_name(&d_device->cdev->dev), d_args); \
135 DBF_DEV_EVENT(DBF_ALERT, d_device, d_string, d_args); \
136} while(0)
137
138#define MESSAGE(d_loglevel,d_string,d_args...)\
139do { \
140 printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \
141 DBF_EVENT(DBF_ALERT, d_string, d_args); \
142} while(0)
143
144
145#define DEV_MESSAGE_LOG(d_loglevel,d_device,d_string,d_args...)\
146do { \
147 printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \
148 dev_name(&d_device->cdev->dev), d_args); \
149} while(0)
150
151#define MESSAGE_LOG(d_loglevel,d_string,d_args...)\
152do { \
153 printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \
154} while(0)
155
156
157#define BLOCKS_PER_PAGE(blksize) (PAGE_SIZE / blksize)
158
159struct dasd_ccw_req {
160 unsigned int magic;
161 int intrc;
162 struct list_head devlist;
163 struct list_head blocklist;
164 struct dasd_block *block;
165 struct dasd_device *memdev;
166 struct dasd_device *startdev;
167 struct dasd_device *basedev;
168 void *cpaddr;
169 short retries;
170 unsigned char cpmode;
171 char status;
172 char lpm;
173 unsigned long flags;
174 struct dasd_queue *dq;
175 unsigned long starttime;
176 unsigned long expires;
177 void *data;
178 struct irb irb;
179 struct dasd_ccw_req *refers;
180 void *function;
181 void *mem_chunk;
182
183 unsigned long buildclk;
184 unsigned long startclk;
185 unsigned long stopclk;
186 unsigned long endclk;
187
188 void (*callback)(struct dasd_ccw_req *, void *data);
189 void *callback_data;
190};
191
192
193
194
195#define DASD_CQR_FILLED 0x00
196#define DASD_CQR_DONE 0x01
197#define DASD_CQR_NEED_ERP 0x02
198#define DASD_CQR_IN_ERP 0x03
199#define DASD_CQR_FAILED 0x04
200#define DASD_CQR_TERMINATED 0x05
201
202#define DASD_CQR_QUEUED 0x80
203#define DASD_CQR_IN_IO 0x81
204#define DASD_CQR_ERROR 0x82
205#define DASD_CQR_CLEAR_PENDING 0x83
206#define DASD_CQR_CLEARED 0x84
207#define DASD_CQR_SUCCESS 0x85
208
209
210#define DASD_EXPIRES 300
211#define DASD_EXPIRES_MAX 40000000
212#define DASD_RETRIES 256
213#define DASD_RETRIES_MAX 32768
214
215
216#define DASD_CQR_FLAGS_USE_ERP 0
217#define DASD_CQR_FLAGS_FAILFAST 1
218#define DASD_CQR_VERIFY_PATH 2
219#define DASD_CQR_ALLOW_SLOCK 3
220
221
222
223
224
225
226#define DASD_CQR_SUPPRESS_NRF 4
227#define DASD_CQR_SUPPRESS_FP 5
228#define DASD_CQR_SUPPRESS_IL 6
229#define DASD_CQR_SUPPRESS_CR 7
230
231#define DASD_REQ_PER_DEV 4
232
233
234typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *);
235
236
237
238
239
240
241#define DASD_CQR_MAX_CCW 255
242
243
244
245
246#define UA_NOT_CONFIGURED 0x00
247#define UA_BASE_DEVICE 0x01
248#define UA_BASE_PAV_ALIAS 0x02
249#define UA_HYPER_PAV_ALIAS 0x03
250
251struct dasd_uid {
252 __u8 type;
253 char vendor[4];
254 char serial[15];
255 __u16 ssid;
256 __u8 real_unit_addr;
257 __u8 base_unit_addr;
258 char vduit[33];
259};
260
261
262
263
264
265
266
267struct dasd_discipline {
268 struct module *owner;
269 char ebcname[8];
270 char name[8];
271 int max_blocks;
272
273 struct list_head list;
274
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279
280
281
282 int (*check_device) (struct dasd_device *);
283 void (*uncheck_device) (struct dasd_device *);
284
285
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288
289
290
291
292 int (*do_analysis) (struct dasd_block *);
293
294
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296
297
298
299
300 int (*verify_path)(struct dasd_device *, __u8);
301
302
303
304
305
306 int (*basic_to_ready) (struct dasd_device *);
307 int (*online_to_ready) (struct dasd_device *);
308 int (*basic_to_known)(struct dasd_device *);
309
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313
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315
316
317
318
319 struct dasd_ccw_req *(*build_cp) (struct dasd_device *,
320 struct dasd_block *,
321 struct request *);
322 int (*start_IO) (struct dasd_ccw_req *);
323 int (*term_IO) (struct dasd_ccw_req *);
324 void (*handle_terminated_request) (struct dasd_ccw_req *);
325 int (*format_device) (struct dasd_device *,
326 struct format_data_t *, int);
327 int (*check_device_format)(struct dasd_device *,
328 struct format_check_t *, int);
329 int (*free_cp) (struct dasd_ccw_req *, struct request *);
330
331
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336
337
338
339
340 dasd_erp_fn_t(*erp_action) (struct dasd_ccw_req *);
341 dasd_erp_fn_t(*erp_postaction) (struct dasd_ccw_req *);
342 void (*dump_sense) (struct dasd_device *, struct dasd_ccw_req *,
343 struct irb *);
344 void (*dump_sense_dbf) (struct dasd_device *, struct irb *, char *);
345 void (*check_for_device_change) (struct dasd_device *,
346 struct dasd_ccw_req *,
347 struct irb *);
348
349
350 int (*fill_geometry) (struct dasd_block *, struct hd_geometry *);
351 int (*fill_info) (struct dasd_device *, struct dasd_information2_t *);
352 int (*ioctl) (struct dasd_block *, unsigned int, void __user *);
353
354
355 int (*freeze) (struct dasd_device *);
356 int (*restore) (struct dasd_device *);
357
358
359 int (*reload) (struct dasd_device *);
360
361 int (*get_uid) (struct dasd_device *, struct dasd_uid *);
362 void (*kick_validate) (struct dasd_device *);
363 int (*check_attention)(struct dasd_device *, __u8);
364 int (*host_access_count)(struct dasd_device *);
365 int (*hosts_print)(struct dasd_device *, struct seq_file *);
366 void (*handle_hpf_error)(struct dasd_device *, struct irb *);
367 void (*disable_hpf)(struct dasd_device *);
368 int (*hpf_enabled)(struct dasd_device *);
369 void (*reset_path)(struct dasd_device *, __u8);
370};
371
372extern struct dasd_discipline *dasd_diag_discipline_pointer;
373
374
375
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377
378
379
380
381#define DASD_EER_DISABLE 0
382#define DASD_EER_TRIGGER 1
383
384
385#define DASD_EER_FATALERROR 1
386#define DASD_EER_NOPATH 2
387#define DASD_EER_STATECHANGE 3
388#define DASD_EER_PPRCSUSPEND 4
389
390
391
392#define DASD_PATH_OPERATIONAL 1
393#define DASD_PATH_TBV 2
394#define DASD_PATH_PP 3
395#define DASD_PATH_NPP 4
396#define DASD_PATH_MISCABLED 5
397#define DASD_PATH_NOHPF 6
398#define DASD_PATH_CUIR 7
399#define DASD_PATH_IFCC 8
400
401#define DASD_THRHLD_MAX 4294967295U
402#define DASD_INTERVAL_MAX 4294967295U
403
404struct dasd_path {
405 unsigned long flags;
406 u8 cssid;
407 u8 ssid;
408 u8 chpid;
409 struct dasd_conf_data *conf_data;
410 atomic_t error_count;
411 unsigned long errorclk;
412};
413
414
415struct dasd_profile_info {
416
417 unsigned int dasd_io_reqs;
418 unsigned int dasd_io_sects;
419 unsigned int dasd_io_secs[32];
420 unsigned int dasd_io_times[32];
421 unsigned int dasd_io_timps[32];
422 unsigned int dasd_io_time1[32];
423 unsigned int dasd_io_time2[32];
424 unsigned int dasd_io_time2ps[32];
425 unsigned int dasd_io_time3[32];
426 unsigned int dasd_io_nr_req[32];
427
428
429 struct timespec64 starttod;
430 unsigned int dasd_io_alias;
431 unsigned int dasd_io_tpm;
432 unsigned int dasd_read_reqs;
433 unsigned int dasd_read_sects;
434 unsigned int dasd_read_alias;
435 unsigned int dasd_read_tpm;
436 unsigned int dasd_read_secs[32];
437 unsigned int dasd_read_times[32];
438 unsigned int dasd_read_time1[32];
439 unsigned int dasd_read_time2[32];
440 unsigned int dasd_read_time3[32];
441 unsigned int dasd_read_nr_req[32];
442 unsigned long dasd_sum_times;
443 unsigned long dasd_sum_time_str;
444 unsigned long dasd_sum_time_irq;
445 unsigned long dasd_sum_time_end;
446};
447
448struct dasd_profile {
449 struct dentry *dentry;
450 struct dasd_profile_info *data;
451 spinlock_t lock;
452};
453
454struct dasd_device {
455
456 struct dasd_block *block;
457
458 unsigned int devindex;
459 unsigned long flags;
460 unsigned short features;
461
462
463 struct dasd_ccw_req *eer_cqr;
464
465
466 struct dasd_discipline *discipline;
467 struct dasd_discipline *base_discipline;
468 void *private;
469 struct dasd_path path[8];
470 __u8 opm;
471
472
473 int state, target;
474 struct mutex state_mutex;
475 int stopped;
476
477
478 atomic_t ref_count;
479
480
481 struct list_head ccw_queue;
482 spinlock_t mem_lock;
483 void *ccw_mem;
484 void *erp_mem;
485 struct list_head ccw_chunks;
486 struct list_head erp_chunks;
487
488 atomic_t tasklet_scheduled;
489 struct tasklet_struct tasklet;
490 struct work_struct kick_work;
491 struct work_struct restore_device;
492 struct work_struct reload_device;
493 struct work_struct kick_validate;
494 struct work_struct suc_work;
495 struct work_struct requeue_requests;
496 struct timer_list timer;
497
498 debug_info_t *debug_area;
499
500 struct ccw_device *cdev;
501
502
503 struct list_head alias_list;
504
505
506 unsigned long default_expires;
507 unsigned long default_retries;
508
509 unsigned long blk_timeout;
510
511 unsigned long path_thrhld;
512 unsigned long path_interval;
513
514 struct dentry *debugfs_dentry;
515 struct dentry *hosts_dentry;
516 struct dasd_profile profile;
517};
518
519struct dasd_block {
520
521 struct gendisk *gdp;
522 struct request_queue *request_queue;
523 spinlock_t request_queue_lock;
524 struct blk_mq_tag_set tag_set;
525 struct block_device *bdev;
526 atomic_t open_count;
527
528 unsigned long blocks;
529 unsigned int bp_block;
530 unsigned int s2b_shift;
531
532 struct dasd_device *base;
533 struct list_head ccw_queue;
534 spinlock_t queue_lock;
535
536 atomic_t tasklet_scheduled;
537 struct tasklet_struct tasklet;
538 struct timer_list timer;
539
540 struct dentry *debugfs_dentry;
541 struct dasd_profile profile;
542};
543
544struct dasd_attention_data {
545 struct dasd_device *device;
546 __u8 lpum;
547};
548
549struct dasd_queue {
550 spinlock_t lock;
551};
552
553
554#define DASD_STOPPED_NOT_ACC 1
555#define DASD_STOPPED_QUIESCE 2
556#define DASD_STOPPED_PENDING 4
557#define DASD_STOPPED_DC_WAIT 8
558#define DASD_STOPPED_SU 16
559#define DASD_STOPPED_PM 32
560#define DASD_UNRESUMED_PM 64
561
562
563#define DASD_FLAG_OFFLINE 3
564#define DASD_FLAG_EER_SNSS 4
565#define DASD_FLAG_EER_IN_USE 5
566#define DASD_FLAG_DEVICE_RO 6
567
568
569
570#define DASD_FLAG_IS_RESERVED 7
571#define DASD_FLAG_LOCK_STOLEN 8
572#define DASD_FLAG_SUSPENDED 9
573#define DASD_FLAG_SAFE_OFFLINE 10
574#define DASD_FLAG_SAFE_OFFLINE_RUNNING 11
575#define DASD_FLAG_ABORTALL 12
576#define DASD_FLAG_PATH_VERIFY 13
577#define DASD_FLAG_SUC 14
578
579#define DASD_SLEEPON_START_TAG ((void *) 1)
580#define DASD_SLEEPON_END_TAG ((void *) 2)
581
582void dasd_put_device_wake(struct dasd_device *);
583
584
585
586
587static inline void
588dasd_get_device(struct dasd_device *device)
589{
590 atomic_inc(&device->ref_count);
591}
592
593static inline void
594dasd_put_device(struct dasd_device *device)
595{
596 if (atomic_dec_return(&device->ref_count) == 0)
597 dasd_put_device_wake(device);
598}
599
600
601
602
603
604struct dasd_mchunk
605{
606 struct list_head list;
607 unsigned long size;
608} __attribute__ ((aligned(8)));
609
610static inline void
611dasd_init_chunklist(struct list_head *chunk_list, void *mem,
612 unsigned long size)
613{
614 struct dasd_mchunk *chunk;
615
616 INIT_LIST_HEAD(chunk_list);
617 chunk = (struct dasd_mchunk *) mem;
618 chunk->size = size - sizeof(struct dasd_mchunk);
619 list_add(&chunk->list, chunk_list);
620}
621
622static inline void *
623dasd_alloc_chunk(struct list_head *chunk_list, unsigned long size)
624{
625 struct dasd_mchunk *chunk, *tmp;
626
627 size = (size + 7L) & -8L;
628 list_for_each_entry(chunk, chunk_list, list) {
629 if (chunk->size < size)
630 continue;
631 if (chunk->size > size + sizeof(struct dasd_mchunk)) {
632 char *endaddr = (char *) (chunk + 1) + chunk->size;
633 tmp = (struct dasd_mchunk *) (endaddr - size) - 1;
634 tmp->size = size;
635 chunk->size -= size + sizeof(struct dasd_mchunk);
636 chunk = tmp;
637 } else
638 list_del(&chunk->list);
639 return (void *) (chunk + 1);
640 }
641 return NULL;
642}
643
644static inline void
645dasd_free_chunk(struct list_head *chunk_list, void *mem)
646{
647 struct dasd_mchunk *chunk, *tmp;
648 struct list_head *p, *left;
649
650 chunk = (struct dasd_mchunk *)
651 ((char *) mem - sizeof(struct dasd_mchunk));
652
653 left = chunk_list;
654 list_for_each(p, chunk_list) {
655 if (list_entry(p, struct dasd_mchunk, list) > chunk)
656 break;
657 left = p;
658 }
659
660 if (left->next != chunk_list) {
661 tmp = list_entry(left->next, struct dasd_mchunk, list);
662 if ((char *) (chunk + 1) + chunk->size == (char *) tmp) {
663 list_del(&tmp->list);
664 chunk->size += tmp->size + sizeof(struct dasd_mchunk);
665 }
666 }
667
668 if (left != chunk_list) {
669 tmp = list_entry(left, struct dasd_mchunk, list);
670 if ((char *) (tmp + 1) + tmp->size == (char *) chunk) {
671 tmp->size += chunk->size + sizeof(struct dasd_mchunk);
672 return;
673 }
674 }
675 __list_add(&chunk->list, left, left->next);
676}
677
678
679
680
681static inline int
682dasd_check_blocksize(int bsize)
683{
684 if (bsize < 512 || bsize > 4096 || !is_power_of_2(bsize))
685 return -EMEDIUMTYPE;
686 return 0;
687}
688
689
690#define DASD_PROFILE_OFF 0
691#define DASD_PROFILE_ON 1
692#define DASD_PROFILE_GLOBAL_ONLY 2
693
694extern debug_info_t *dasd_debug_area;
695extern struct dasd_profile dasd_global_profile;
696extern unsigned int dasd_global_profile_level;
697extern const struct block_device_operations dasd_device_operations;
698
699extern struct kmem_cache *dasd_page_cache;
700
701struct dasd_ccw_req *
702dasd_smalloc_request(int, int, int, struct dasd_device *, struct dasd_ccw_req *);
703void dasd_sfree_request(struct dasd_ccw_req *, struct dasd_device *);
704void dasd_wakeup_cb(struct dasd_ccw_req *, void *);
705
706struct dasd_device *dasd_alloc_device(void);
707void dasd_free_device(struct dasd_device *);
708
709struct dasd_block *dasd_alloc_block(void);
710void dasd_free_block(struct dasd_block *);
711
712enum blk_eh_timer_return dasd_times_out(struct request *req, bool reserved);
713
714void dasd_enable_device(struct dasd_device *);
715void dasd_set_target_state(struct dasd_device *, int);
716void dasd_kick_device(struct dasd_device *);
717void dasd_restore_device(struct dasd_device *);
718void dasd_reload_device(struct dasd_device *);
719void dasd_schedule_requeue(struct dasd_device *);
720
721void dasd_add_request_head(struct dasd_ccw_req *);
722void dasd_add_request_tail(struct dasd_ccw_req *);
723int dasd_start_IO(struct dasd_ccw_req *);
724int dasd_term_IO(struct dasd_ccw_req *);
725void dasd_schedule_device_bh(struct dasd_device *);
726void dasd_schedule_block_bh(struct dasd_block *);
727int dasd_sleep_on(struct dasd_ccw_req *);
728int dasd_sleep_on_queue(struct list_head *);
729int dasd_sleep_on_immediatly(struct dasd_ccw_req *);
730int dasd_sleep_on_interruptible(struct dasd_ccw_req *);
731void dasd_device_set_timer(struct dasd_device *, int);
732void dasd_device_clear_timer(struct dasd_device *);
733void dasd_block_set_timer(struct dasd_block *, int);
734void dasd_block_clear_timer(struct dasd_block *);
735int dasd_cancel_req(struct dasd_ccw_req *);
736int dasd_flush_device_queue(struct dasd_device *);
737int dasd_generic_probe (struct ccw_device *, struct dasd_discipline *);
738void dasd_generic_free_discipline(struct dasd_device *);
739void dasd_generic_remove (struct ccw_device *cdev);
740int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *);
741int dasd_generic_set_offline (struct ccw_device *cdev);
742int dasd_generic_notify(struct ccw_device *, int);
743int dasd_generic_last_path_gone(struct dasd_device *);
744int dasd_generic_path_operational(struct dasd_device *);
745void dasd_generic_shutdown(struct ccw_device *);
746
747void dasd_generic_handle_state_change(struct dasd_device *);
748int dasd_generic_pm_freeze(struct ccw_device *);
749int dasd_generic_restore_device(struct ccw_device *);
750enum uc_todo dasd_generic_uc_handler(struct ccw_device *, struct irb *);
751void dasd_generic_path_event(struct ccw_device *, int *);
752int dasd_generic_verify_path(struct dasd_device *, __u8);
753
754int dasd_generic_read_dev_chars(struct dasd_device *, int, void *, int);
755char *dasd_get_sense(struct irb *);
756
757void dasd_device_set_stop_bits(struct dasd_device *, int);
758void dasd_device_remove_stop_bits(struct dasd_device *, int);
759
760int dasd_device_is_ro(struct dasd_device *);
761
762void dasd_profile_reset(struct dasd_profile *);
763int dasd_profile_on(struct dasd_profile *);
764void dasd_profile_off(struct dasd_profile *);
765char *dasd_get_user_string(const char __user *, size_t);
766
767
768extern int dasd_max_devindex;
769extern int dasd_probeonly;
770extern int dasd_autodetect;
771extern int dasd_nopav;
772extern int dasd_nofcx;
773
774int dasd_devmap_init(void);
775void dasd_devmap_exit(void);
776
777struct dasd_device *dasd_create_device(struct ccw_device *);
778void dasd_delete_device(struct dasd_device *);
779
780int dasd_get_feature(struct ccw_device *, int);
781int dasd_set_feature(struct ccw_device *, int, int);
782
783int dasd_add_sysfs_files(struct ccw_device *);
784void dasd_remove_sysfs_files(struct ccw_device *);
785
786struct dasd_device *dasd_device_from_cdev(struct ccw_device *);
787struct dasd_device *dasd_device_from_cdev_locked(struct ccw_device *);
788struct dasd_device *dasd_device_from_devindex(int);
789
790void dasd_add_link_to_gendisk(struct gendisk *, struct dasd_device *);
791struct dasd_device *dasd_device_from_gendisk(struct gendisk *);
792
793int dasd_parse(void) __init;
794int dasd_busid_known(const char *);
795
796
797int dasd_gendisk_init(void);
798void dasd_gendisk_exit(void);
799int dasd_gendisk_alloc(struct dasd_block *);
800void dasd_gendisk_free(struct dasd_block *);
801int dasd_scan_partitions(struct dasd_block *);
802void dasd_destroy_partitions(struct dasd_block *);
803
804
805int dasd_ioctl(struct block_device *, fmode_t, unsigned int, unsigned long);
806
807
808int dasd_proc_init(void);
809void dasd_proc_exit(void);
810
811
812struct dasd_ccw_req *dasd_default_erp_action(struct dasd_ccw_req *);
813struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *);
814struct dasd_ccw_req *dasd_alloc_erp_request(char *, int, int,
815 struct dasd_device *);
816void dasd_free_erp_request(struct dasd_ccw_req *, struct dasd_device *);
817void dasd_log_sense(struct dasd_ccw_req *, struct irb *);
818void dasd_log_sense_dbf(struct dasd_ccw_req *cqr, struct irb *irb);
819
820
821struct dasd_ccw_req *dasd_3990_erp_action(struct dasd_ccw_req *);
822void dasd_3990_erp_handle_sim(struct dasd_device *, char *);
823
824
825#ifdef CONFIG_DASD_EER
826int dasd_eer_init(void);
827void dasd_eer_exit(void);
828int dasd_eer_enable(struct dasd_device *);
829void dasd_eer_disable(struct dasd_device *);
830void dasd_eer_write(struct dasd_device *, struct dasd_ccw_req *cqr,
831 unsigned int id);
832void dasd_eer_snss(struct dasd_device *);
833
834static inline int dasd_eer_enabled(struct dasd_device *device)
835{
836 return device->eer_cqr != NULL;
837}
838#else
839#define dasd_eer_init() (0)
840#define dasd_eer_exit() do { } while (0)
841#define dasd_eer_enable(d) (0)
842#define dasd_eer_disable(d) do { } while (0)
843#define dasd_eer_write(d,c,i) do { } while (0)
844#define dasd_eer_snss(d) do { } while (0)
845#define dasd_eer_enabled(d) (0)
846#endif
847
848
849
850
851
852
853
854static inline int dasd_path_is_operational(struct dasd_device *device, int chp)
855{
856 return test_bit(DASD_PATH_OPERATIONAL, &device->path[chp].flags);
857}
858
859static inline int dasd_path_need_verify(struct dasd_device *device, int chp)
860{
861 return test_bit(DASD_PATH_TBV, &device->path[chp].flags);
862}
863
864static inline void dasd_path_verify(struct dasd_device *device, int chp)
865{
866 __set_bit(DASD_PATH_TBV, &device->path[chp].flags);
867}
868
869static inline void dasd_path_clear_verify(struct dasd_device *device, int chp)
870{
871 __clear_bit(DASD_PATH_TBV, &device->path[chp].flags);
872}
873
874static inline void dasd_path_clear_all_verify(struct dasd_device *device)
875{
876 int chp;
877
878 for (chp = 0; chp < 8; chp++)
879 dasd_path_clear_verify(device, chp);
880}
881
882static inline void dasd_path_operational(struct dasd_device *device, int chp)
883{
884 __set_bit(DASD_PATH_OPERATIONAL, &device->path[chp].flags);
885 device->opm |= (0x80 >> chp);
886}
887
888static inline void dasd_path_nonpreferred(struct dasd_device *device, int chp)
889{
890 __set_bit(DASD_PATH_NPP, &device->path[chp].flags);
891}
892
893static inline int dasd_path_is_nonpreferred(struct dasd_device *device, int chp)
894{
895 return test_bit(DASD_PATH_NPP, &device->path[chp].flags);
896}
897
898static inline void dasd_path_clear_nonpreferred(struct dasd_device *device,
899 int chp)
900{
901 __clear_bit(DASD_PATH_NPP, &device->path[chp].flags);
902}
903
904static inline void dasd_path_preferred(struct dasd_device *device, int chp)
905{
906 __set_bit(DASD_PATH_PP, &device->path[chp].flags);
907}
908
909static inline int dasd_path_is_preferred(struct dasd_device *device, int chp)
910{
911 return test_bit(DASD_PATH_PP, &device->path[chp].flags);
912}
913
914static inline void dasd_path_clear_preferred(struct dasd_device *device,
915 int chp)
916{
917 __clear_bit(DASD_PATH_PP, &device->path[chp].flags);
918}
919
920static inline void dasd_path_clear_oper(struct dasd_device *device, int chp)
921{
922 __clear_bit(DASD_PATH_OPERATIONAL, &device->path[chp].flags);
923 device->opm &= ~(0x80 >> chp);
924}
925
926static inline void dasd_path_clear_cable(struct dasd_device *device, int chp)
927{
928 __clear_bit(DASD_PATH_MISCABLED, &device->path[chp].flags);
929}
930
931static inline void dasd_path_cuir(struct dasd_device *device, int chp)
932{
933 __set_bit(DASD_PATH_CUIR, &device->path[chp].flags);
934}
935
936static inline int dasd_path_is_cuir(struct dasd_device *device, int chp)
937{
938 return test_bit(DASD_PATH_CUIR, &device->path[chp].flags);
939}
940
941static inline void dasd_path_clear_cuir(struct dasd_device *device, int chp)
942{
943 __clear_bit(DASD_PATH_CUIR, &device->path[chp].flags);
944}
945
946static inline void dasd_path_ifcc(struct dasd_device *device, int chp)
947{
948 set_bit(DASD_PATH_IFCC, &device->path[chp].flags);
949}
950
951static inline int dasd_path_is_ifcc(struct dasd_device *device, int chp)
952{
953 return test_bit(DASD_PATH_IFCC, &device->path[chp].flags);
954}
955
956static inline void dasd_path_clear_ifcc(struct dasd_device *device, int chp)
957{
958 clear_bit(DASD_PATH_IFCC, &device->path[chp].flags);
959}
960
961static inline void dasd_path_clear_nohpf(struct dasd_device *device, int chp)
962{
963 __clear_bit(DASD_PATH_NOHPF, &device->path[chp].flags);
964}
965
966static inline void dasd_path_miscabled(struct dasd_device *device, int chp)
967{
968 __set_bit(DASD_PATH_MISCABLED, &device->path[chp].flags);
969}
970
971static inline int dasd_path_is_miscabled(struct dasd_device *device, int chp)
972{
973 return test_bit(DASD_PATH_MISCABLED, &device->path[chp].flags);
974}
975
976static inline void dasd_path_nohpf(struct dasd_device *device, int chp)
977{
978 __set_bit(DASD_PATH_NOHPF, &device->path[chp].flags);
979}
980
981static inline int dasd_path_is_nohpf(struct dasd_device *device, int chp)
982{
983 return test_bit(DASD_PATH_NOHPF, &device->path[chp].flags);
984}
985
986
987
988
989
990
991static inline __u8 dasd_path_get_opm(struct dasd_device *device)
992{
993 return device->opm;
994}
995
996static inline __u8 dasd_path_get_tbvpm(struct dasd_device *device)
997{
998 int chp;
999 __u8 tbvpm = 0x00;
1000
1001 for (chp = 0; chp < 8; chp++)
1002 if (dasd_path_need_verify(device, chp))
1003 tbvpm |= 0x80 >> chp;
1004 return tbvpm;
1005}
1006
1007static inline __u8 dasd_path_get_nppm(struct dasd_device *device)
1008{
1009 int chp;
1010 __u8 npm = 0x00;
1011
1012 for (chp = 0; chp < 8; chp++) {
1013 if (dasd_path_is_nonpreferred(device, chp))
1014 npm |= 0x80 >> chp;
1015 }
1016 return npm;
1017}
1018
1019static inline __u8 dasd_path_get_ppm(struct dasd_device *device)
1020{
1021 int chp;
1022 __u8 ppm = 0x00;
1023
1024 for (chp = 0; chp < 8; chp++)
1025 if (dasd_path_is_preferred(device, chp))
1026 ppm |= 0x80 >> chp;
1027 return ppm;
1028}
1029
1030static inline __u8 dasd_path_get_cablepm(struct dasd_device *device)
1031{
1032 int chp;
1033 __u8 cablepm = 0x00;
1034
1035 for (chp = 0; chp < 8; chp++)
1036 if (dasd_path_is_miscabled(device, chp))
1037 cablepm |= 0x80 >> chp;
1038 return cablepm;
1039}
1040
1041static inline __u8 dasd_path_get_cuirpm(struct dasd_device *device)
1042{
1043 int chp;
1044 __u8 cuirpm = 0x00;
1045
1046 for (chp = 0; chp < 8; chp++)
1047 if (dasd_path_is_cuir(device, chp))
1048 cuirpm |= 0x80 >> chp;
1049 return cuirpm;
1050}
1051
1052static inline __u8 dasd_path_get_ifccpm(struct dasd_device *device)
1053{
1054 int chp;
1055 __u8 ifccpm = 0x00;
1056
1057 for (chp = 0; chp < 8; chp++)
1058 if (dasd_path_is_ifcc(device, chp))
1059 ifccpm |= 0x80 >> chp;
1060 return ifccpm;
1061}
1062
1063static inline __u8 dasd_path_get_hpfpm(struct dasd_device *device)
1064{
1065 int chp;
1066 __u8 hpfpm = 0x00;
1067
1068 for (chp = 0; chp < 8; chp++)
1069 if (dasd_path_is_nohpf(device, chp))
1070 hpfpm |= 0x80 >> chp;
1071 return hpfpm;
1072}
1073
1074
1075
1076
1077
1078static inline void dasd_path_add_tbvpm(struct dasd_device *device, __u8 pm)
1079{
1080 int chp;
1081
1082 for (chp = 0; chp < 8; chp++)
1083 if (pm & (0x80 >> chp))
1084 dasd_path_verify(device, chp);
1085}
1086
1087static inline __u8 dasd_path_get_notoperpm(struct dasd_device *device)
1088{
1089 int chp;
1090 __u8 nopm = 0x00;
1091
1092 for (chp = 0; chp < 8; chp++)
1093 if (dasd_path_is_nohpf(device, chp) ||
1094 dasd_path_is_ifcc(device, chp) ||
1095 dasd_path_is_cuir(device, chp) ||
1096 dasd_path_is_miscabled(device, chp))
1097 nopm |= 0x80 >> chp;
1098 return nopm;
1099}
1100
1101static inline void dasd_path_add_opm(struct dasd_device *device, __u8 pm)
1102{
1103 int chp;
1104
1105 for (chp = 0; chp < 8; chp++)
1106 if (pm & (0x80 >> chp)) {
1107 dasd_path_operational(device, chp);
1108
1109
1110
1111
1112 dasd_path_clear_nohpf(device, chp);
1113 dasd_path_clear_cuir(device, chp);
1114 dasd_path_clear_cable(device, chp);
1115 dasd_path_clear_ifcc(device, chp);
1116 }
1117}
1118
1119static inline void dasd_path_add_cablepm(struct dasd_device *device, __u8 pm)
1120{
1121 int chp;
1122
1123 for (chp = 0; chp < 8; chp++)
1124 if (pm & (0x80 >> chp))
1125 dasd_path_miscabled(device, chp);
1126}
1127
1128static inline void dasd_path_add_cuirpm(struct dasd_device *device, __u8 pm)
1129{
1130 int chp;
1131
1132 for (chp = 0; chp < 8; chp++)
1133 if (pm & (0x80 >> chp))
1134 dasd_path_cuir(device, chp);
1135}
1136
1137static inline void dasd_path_add_ifccpm(struct dasd_device *device, __u8 pm)
1138{
1139 int chp;
1140
1141 for (chp = 0; chp < 8; chp++)
1142 if (pm & (0x80 >> chp))
1143 dasd_path_ifcc(device, chp);
1144}
1145
1146static inline void dasd_path_add_nppm(struct dasd_device *device, __u8 pm)
1147{
1148 int chp;
1149
1150 for (chp = 0; chp < 8; chp++)
1151 if (pm & (0x80 >> chp))
1152 dasd_path_nonpreferred(device, chp);
1153}
1154
1155static inline void dasd_path_add_nohpfpm(struct dasd_device *device, __u8 pm)
1156{
1157 int chp;
1158
1159 for (chp = 0; chp < 8; chp++)
1160 if (pm & (0x80 >> chp))
1161 dasd_path_nohpf(device, chp);
1162}
1163
1164static inline void dasd_path_add_ppm(struct dasd_device *device, __u8 pm)
1165{
1166 int chp;
1167
1168 for (chp = 0; chp < 8; chp++)
1169 if (pm & (0x80 >> chp))
1170 dasd_path_preferred(device, chp);
1171}
1172
1173
1174
1175
1176
1177static inline void dasd_path_set_tbvpm(struct dasd_device *device, __u8 pm)
1178{
1179 int chp;
1180
1181 for (chp = 0; chp < 8; chp++)
1182 if (pm & (0x80 >> chp))
1183 dasd_path_verify(device, chp);
1184 else
1185 dasd_path_clear_verify(device, chp);
1186}
1187
1188static inline void dasd_path_set_opm(struct dasd_device *device, __u8 pm)
1189{
1190 int chp;
1191
1192 for (chp = 0; chp < 8; chp++) {
1193 dasd_path_clear_oper(device, chp);
1194 if (pm & (0x80 >> chp)) {
1195 dasd_path_operational(device, chp);
1196
1197
1198
1199
1200 dasd_path_clear_nohpf(device, chp);
1201 dasd_path_clear_cuir(device, chp);
1202 dasd_path_clear_cable(device, chp);
1203 dasd_path_clear_ifcc(device, chp);
1204 }
1205 }
1206}
1207
1208
1209
1210
1211
1212static inline void dasd_path_remove_opm(struct dasd_device *device, __u8 pm)
1213{
1214 int chp;
1215
1216 for (chp = 0; chp < 8; chp++) {
1217 if (pm & (0x80 >> chp))
1218 dasd_path_clear_oper(device, chp);
1219 }
1220}
1221
1222
1223
1224
1225
1226static inline void dasd_path_available(struct dasd_device *device, int chp)
1227{
1228 dasd_path_clear_oper(device, chp);
1229 dasd_path_verify(device, chp);
1230}
1231
1232static inline void dasd_path_notoper(struct dasd_device *device, int chp)
1233{
1234 dasd_path_clear_oper(device, chp);
1235 dasd_path_clear_preferred(device, chp);
1236 dasd_path_clear_nonpreferred(device, chp);
1237}
1238
1239
1240
1241
1242static inline void dasd_path_no_path(struct dasd_device *device)
1243{
1244 int chp;
1245
1246 for (chp = 0; chp < 8; chp++)
1247 dasd_path_notoper(device, chp);
1248
1249 dasd_path_clear_all_verify(device);
1250}
1251
1252
1253
1254#endif
1255