82194c4eadfb59844511be40adff6a5f1fed94a6
[linux-3.10.git] / drivers / s390 / cio / qdio.c
1 /*
2  *
3  * linux/drivers/s390/cio/qdio.c
4  *
5  * Linux for S/390 QDIO base support, Hipersocket base support
6  * version 2
7  *
8  * Copyright 2000,2002 IBM Corporation
9  * Author(s):             Utz Bacher <utz.bacher@de.ibm.com>
10  * 2.6 cio integration by Cornelia Huck <cohuck@de.ibm.com>
11  *
12  * Restriction: only 63 iqdio subchannels would have its own indicator,
13  * after that, subsequent subchannels share one indicator
14  *
15  *
16  *
17  *
18  * This program is free software; you can redistribute it and/or modify
19  * it under the terms of the GNU General Public License as published by
20  * the Free Software Foundation; either version 2, or (at your option)
21  * any later version.
22  *
23  * This program is distributed in the hope that it will be useful,
24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
26  * GNU General Public License for more details.
27  *
28  * You should have received a copy of the GNU General Public License
29  * along with this program; if not, write to the Free Software
30  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31  */
32
33 #include <linux/config.h>
34 #include <linux/module.h>
35 #include <linux/init.h>
36
37 #include <linux/slab.h>
38 #include <linux/kernel.h>
39 #include <linux/proc_fs.h>
40 #include <linux/timer.h>
41
42 #include <asm/ccwdev.h>
43 #include <asm/io.h>
44 #include <asm/atomic.h>
45 #include <asm/semaphore.h>
46 #include <asm/timex.h>
47
48 #include <asm/debug.h>
49 #include <asm/qdio.h>
50
51 #include "cio.h"
52 #include "css.h"
53 #include "device.h"
54 #include "airq.h"
55 #include "qdio.h"
56 #include "ioasm.h"
57 #include "chsc.h"
58
59 #define VERSION_QDIO_C "$Revision: 1.101 $"
60
61 /****************** MODULE PARAMETER VARIABLES ********************/
62 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
63 MODULE_DESCRIPTION("QDIO base support version 2, " \
64                    "Copyright 2000 IBM Corporation");
65 MODULE_LICENSE("GPL");
66
67 /******************** HERE WE GO ***********************************/
68
69 static const char version[] = "QDIO base support version 2 ("
70         VERSION_QDIO_C "/" VERSION_QDIO_H  "/" VERSION_CIO_QDIO_H ")";
71
72 #ifdef QDIO_PERFORMANCE_STATS
73 static int proc_perf_file_registration;
74 static unsigned long i_p_c, i_p_nc, o_p_c, o_p_nc, ii_p_c, ii_p_nc;
75 static struct qdio_perf_stats perf_stats;
76 #endif /* QDIO_PERFORMANCE_STATS */
77
78 static int hydra_thinints;
79 static int omit_svs;
80
81 static int indicator_used[INDICATORS_PER_CACHELINE];
82 static __u32 * volatile indicators;
83 static __u32 volatile spare_indicator;
84 static atomic_t spare_indicator_usecount;
85
86 static debug_info_t *qdio_dbf_setup;
87 static debug_info_t *qdio_dbf_sbal;
88 static debug_info_t *qdio_dbf_trace;
89 static debug_info_t *qdio_dbf_sense;
90 #ifdef CONFIG_QDIO_DEBUG
91 static debug_info_t *qdio_dbf_slsb_out;
92 static debug_info_t *qdio_dbf_slsb_in;
93 #endif /* CONFIG_QDIO_DEBUG */
94
95 /* iQDIO stuff: */
96 static volatile struct qdio_q *tiq_list=NULL; /* volatile as it could change
97                                                  during a while loop */
98 static DEFINE_SPINLOCK(ttiq_list_lock);
99 static int register_thinint_result;
100 static void tiqdio_tl(unsigned long);
101 static DECLARE_TASKLET(tiqdio_tasklet,tiqdio_tl,0);
102
103 /* not a macro, as one of the arguments is atomic_read */
104 static inline int 
105 qdio_min(int a,int b)
106 {
107         if (a<b)
108                 return a;
109         else
110                 return b;
111 }
112
113 /***************** SCRUBBER HELPER ROUTINES **********************/
114
115 static inline volatile __u64 
116 qdio_get_micros(void)
117 {
118         return (get_clock() >> 10); /* time>>12 is microseconds */
119 }
120
121 /* 
122  * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
123  * the q in any case, so that we'll not be interrupted when we are in
124  * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
125  * ever works (last famous words) 
126  */
127 static inline int 
128 qdio_reserve_q(struct qdio_q *q)
129 {
130         return atomic_add_return(1,&q->use_count) - 1;
131 }
132
133 static inline void 
134 qdio_release_q(struct qdio_q *q)
135 {
136         atomic_dec(&q->use_count);
137 }
138
139 static volatile inline void 
140 qdio_set_slsb(volatile char *slsb, unsigned char value)
141 {
142         xchg((char*)slsb,value);
143 }
144
145 static inline int 
146 qdio_siga_sync(struct qdio_q *q, unsigned int gpr2,
147                unsigned int gpr3)
148 {
149         int cc;
150
151         QDIO_DBF_TEXT4(0,trace,"sigasync");
152         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
153
154 #ifdef QDIO_PERFORMANCE_STATS
155         perf_stats.siga_syncs++;
156 #endif /* QDIO_PERFORMANCE_STATS */
157
158         cc = do_siga_sync(q->irq, gpr2, gpr3);
159         if (cc)
160                 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
161
162         return cc;
163 }
164
165 static inline int
166 qdio_siga_sync_q(struct qdio_q *q)
167 {
168         if (q->is_input_q)
169                 return qdio_siga_sync(q, 0, q->mask);
170         return qdio_siga_sync(q, q->mask, 0);
171 }
172
173 /* 
174  * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
175  * an access exception 
176  */
177 static inline int 
178 qdio_siga_output(struct qdio_q *q)
179 {
180         int cc;
181         __u32 busy_bit;
182         __u64 start_time=0;
183
184 #ifdef QDIO_PERFORMANCE_STATS
185         perf_stats.siga_outs++;
186 #endif /* QDIO_PERFORMANCE_STATS */
187
188         QDIO_DBF_TEXT4(0,trace,"sigaout");
189         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
190
191         for (;;) {
192                 cc = do_siga_output(q->irq, q->mask, &busy_bit);
193 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
194                 if ((cc==2) && (busy_bit) && (q->is_iqdio_q)) {
195                         if (!start_time) 
196                                 start_time=NOW;
197                         if ((NOW-start_time)>QDIO_BUSY_BIT_PATIENCE)
198                                 break;
199                 } else
200                         break;
201         }
202         
203         if ((cc==2) && (busy_bit)) 
204                 cc |= QDIO_SIGA_ERROR_B_BIT_SET;
205
206         if (cc)
207                 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
208
209         return cc;
210 }
211
212 static inline int 
213 qdio_siga_input(struct qdio_q *q)
214 {
215         int cc;
216
217         QDIO_DBF_TEXT4(0,trace,"sigain");
218         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
219
220 #ifdef QDIO_PERFORMANCE_STATS
221         perf_stats.siga_ins++;
222 #endif /* QDIO_PERFORMANCE_STATS */
223
224         cc = do_siga_input(q->irq, q->mask);
225         
226         if (cc)
227                 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
228
229         return cc;
230 }
231
232 /* locked by the locks in qdio_activate and qdio_cleanup */
233 static __u32 * volatile 
234 qdio_get_indicator(void)
235 {
236         int i;
237
238         for (i=1;i<INDICATORS_PER_CACHELINE;i++)
239                 if (!indicator_used[i]) {
240                         indicator_used[i]=1;
241                         return indicators+i;
242                 }
243         atomic_inc(&spare_indicator_usecount);
244         return (__u32 * volatile) &spare_indicator;
245 }
246
247 /* locked by the locks in qdio_activate and qdio_cleanup */
248 static void 
249 qdio_put_indicator(__u32 *addr)
250 {
251         int i;
252
253         if ( (addr) && (addr!=&spare_indicator) ) {
254                 i=addr-indicators;
255                 indicator_used[i]=0;
256         }
257         if (addr == &spare_indicator)
258                 atomic_dec(&spare_indicator_usecount);
259 }
260
261 static inline volatile void 
262 tiqdio_clear_summary_bit(__u32 *location)
263 {
264         QDIO_DBF_TEXT5(0,trace,"clrsummb");
265         QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
266
267         xchg(location,0);
268 }
269
270 static inline volatile void
271 tiqdio_set_summary_bit(__u32 *location)
272 {
273         QDIO_DBF_TEXT5(0,trace,"setsummb");
274         QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
275
276         xchg(location,-1);
277 }
278
279 static inline void 
280 tiqdio_sched_tl(void)
281 {
282         tasklet_hi_schedule(&tiqdio_tasklet);
283 }
284
285 static inline void
286 qdio_mark_tiq(struct qdio_q *q)
287 {
288         unsigned long flags;
289
290         QDIO_DBF_TEXT4(0,trace,"mark iq");
291         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
292
293         spin_lock_irqsave(&ttiq_list_lock,flags);
294         if (unlikely(atomic_read(&q->is_in_shutdown)))
295                 goto out_unlock;
296
297         if (!q->is_input_q)
298                 goto out_unlock;
299
300         if ((q->list_prev) || (q->list_next)) 
301                 goto out_unlock;
302
303         if (!tiq_list) {
304                 tiq_list=q;
305                 q->list_prev=q;
306                 q->list_next=q;
307         } else {
308                 q->list_next=tiq_list;
309                 q->list_prev=tiq_list->list_prev;
310                 tiq_list->list_prev->list_next=q;
311                 tiq_list->list_prev=q;
312         }
313         spin_unlock_irqrestore(&ttiq_list_lock,flags);
314
315         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
316         tiqdio_sched_tl();
317         return;
318 out_unlock:
319         spin_unlock_irqrestore(&ttiq_list_lock,flags);
320         return;
321 }
322
323 static inline void
324 qdio_mark_q(struct qdio_q *q)
325 {
326         QDIO_DBF_TEXT4(0,trace,"mark q");
327         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
328
329         if (unlikely(atomic_read(&q->is_in_shutdown)))
330                 return;
331
332         tasklet_schedule(&q->tasklet);
333 }
334
335 static inline int
336 qdio_stop_polling(struct qdio_q *q)
337 {
338 #ifdef QDIO_USE_PROCESSING_STATE
339         int gsf;
340
341         if (!atomic_swap(&q->polling,0)) 
342                 return 1;
343
344         QDIO_DBF_TEXT4(0,trace,"stoppoll");
345         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
346
347         /* show the card that we are not polling anymore */
348         if (!q->is_input_q)
349                 return 1;
350
351         gsf=GET_SAVED_FRONTIER(q);
352         set_slsb(&q->slsb.acc.val[(gsf+QDIO_MAX_BUFFERS_PER_Q-1)&
353                                   (QDIO_MAX_BUFFERS_PER_Q-1)],
354                  SLSB_P_INPUT_NOT_INIT);
355         /* 
356          * we don't issue this SYNC_MEMORY, as we trust Rick T and
357          * moreover will not use the PROCESSING state under VM, so
358          * q->polling was 0 anyway
359          */
360         /*SYNC_MEMORY;*/
361         if (q->slsb.acc.val[gsf]!=SLSB_P_INPUT_PRIMED)
362                 return 1;
363         /* 
364          * set our summary bit again, as otherwise there is a
365          * small window we can miss between resetting it and
366          * checking for PRIMED state 
367          */
368         if (q->is_thinint_q)
369                 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
370         return 0;
371
372 #else /* QDIO_USE_PROCESSING_STATE */
373         return 1;
374 #endif /* QDIO_USE_PROCESSING_STATE */
375 }
376
377 /* 
378  * see the comment in do_QDIO and before qdio_reserve_q about the
379  * sophisticated locking outside of unmark_q, so that we don't need to
380  * disable the interrupts :-) 
381 */
382 static inline void
383 qdio_unmark_q(struct qdio_q *q)
384 {
385         unsigned long flags;
386
387         QDIO_DBF_TEXT4(0,trace,"unmark q");
388         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
389
390         if ((!q->list_prev)||(!q->list_next))
391                 return;
392
393         if ((q->is_thinint_q)&&(q->is_input_q)) {
394                 /* iQDIO */
395                 spin_lock_irqsave(&ttiq_list_lock,flags);
396                 /* in case cleanup has done this already and simultanously
397                  * qdio_unmark_q is called from the interrupt handler, we've
398                  * got to check this in this specific case again */
399                 if ((!q->list_prev)||(!q->list_next))
400                         goto out;
401                 if (q->list_next==q) {
402                         /* q was the only interesting q */
403                         tiq_list=NULL;
404                         q->list_next=NULL;
405                         q->list_prev=NULL;
406                 } else {
407                         q->list_next->list_prev=q->list_prev;
408                         q->list_prev->list_next=q->list_next;
409                         tiq_list=q->list_next;
410                         q->list_next=NULL;
411                         q->list_prev=NULL;
412                 }
413 out:
414                 spin_unlock_irqrestore(&ttiq_list_lock,flags);
415         }
416 }
417
418 static inline unsigned long 
419 tiqdio_clear_global_summary(void)
420 {
421         unsigned long time;
422
423         QDIO_DBF_TEXT5(0,trace,"clrglobl");
424         
425         time = do_clear_global_summary();
426
427         QDIO_DBF_HEX5(0,trace,&time,sizeof(unsigned long));
428
429         return time;
430 }
431
432
433 /************************* OUTBOUND ROUTINES *******************************/
434
435 inline static int
436 qdio_get_outbound_buffer_frontier(struct qdio_q *q)
437 {
438         int f,f_mod_no;
439         volatile char *slsb;
440         int first_not_to_check;
441         char dbf_text[15];
442
443         QDIO_DBF_TEXT4(0,trace,"getobfro");
444         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
445
446         slsb=&q->slsb.acc.val[0];
447         f_mod_no=f=q->first_to_check;
448         /* 
449          * f points to already processed elements, so f+no_used is correct...
450          * ... but: we don't check 128 buffers, as otherwise
451          * qdio_has_outbound_q_moved would return 0 
452          */
453         first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
454                                       (QDIO_MAX_BUFFERS_PER_Q-1));
455
456         if ((!q->is_iqdio_q)&&(!q->hydra_gives_outbound_pcis))
457                 SYNC_MEMORY;
458
459 check_next:
460         if (f==first_not_to_check) 
461                 goto out;
462
463         switch(slsb[f_mod_no]) {
464
465         /* the adapter has not fetched the output yet */
466         case SLSB_CU_OUTPUT_PRIMED:
467                 QDIO_DBF_TEXT5(0,trace,"outpprim");
468                 break;
469
470         /* the adapter got it */
471         case SLSB_P_OUTPUT_EMPTY:
472                 atomic_dec(&q->number_of_buffers_used);
473                 f++;
474                 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
475                 QDIO_DBF_TEXT5(0,trace,"outpempt");
476                 goto check_next;
477
478         case SLSB_P_OUTPUT_ERROR:
479                 QDIO_DBF_TEXT3(0,trace,"outperr");
480                 sprintf(dbf_text,"%x-%x-%x",f_mod_no,
481                         q->sbal[f_mod_no]->element[14].sbalf.value,
482                         q->sbal[f_mod_no]->element[15].sbalf.value);
483                 QDIO_DBF_TEXT3(1,trace,dbf_text);
484                 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
485
486                 /* kind of process the buffer */
487                 set_slsb(&q->slsb.acc.val[f_mod_no], SLSB_P_OUTPUT_NOT_INIT);
488
489                 /* 
490                  * we increment the frontier, as this buffer
491                  * was processed obviously 
492                  */
493                 atomic_dec(&q->number_of_buffers_used);
494                 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
495
496                 if (q->qdio_error)
497                         q->error_status_flags|=
498                                 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
499                 q->qdio_error=SLSB_P_OUTPUT_ERROR;
500                 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
501
502                 break;
503
504         /* no new buffers */
505         default:
506                 QDIO_DBF_TEXT5(0,trace,"outpni");
507         }
508 out:
509         return (q->first_to_check=f_mod_no);
510 }
511
512 /* all buffers are processed */
513 inline static int
514 qdio_is_outbound_q_done(struct qdio_q *q)
515 {
516         int no_used;
517 #ifdef CONFIG_QDIO_DEBUG
518         char dbf_text[15];
519 #endif
520
521         no_used=atomic_read(&q->number_of_buffers_used);
522
523 #ifdef CONFIG_QDIO_DEBUG
524         if (no_used) {
525                 sprintf(dbf_text,"oqisnt%02x",no_used);
526                 QDIO_DBF_TEXT4(0,trace,dbf_text);
527         } else {
528                 QDIO_DBF_TEXT4(0,trace,"oqisdone");
529         }
530         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
531 #endif /* CONFIG_QDIO_DEBUG */
532         return (no_used==0);
533 }
534
535 inline static int
536 qdio_has_outbound_q_moved(struct qdio_q *q)
537 {
538         int i;
539
540         i=qdio_get_outbound_buffer_frontier(q);
541
542         if ( (i!=GET_SAVED_FRONTIER(q)) ||
543              (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
544                 SAVE_FRONTIER(q,i);
545                 QDIO_DBF_TEXT4(0,trace,"oqhasmvd");
546                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
547                 return 1;
548         } else {
549                 QDIO_DBF_TEXT4(0,trace,"oqhsntmv");
550                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
551                 return 0;
552         }
553 }
554
555 inline static void
556 qdio_kick_outbound_q(struct qdio_q *q)
557 {
558         int result;
559 #ifdef CONFIG_QDIO_DEBUG
560         char dbf_text[15];
561
562         QDIO_DBF_TEXT4(0,trace,"kickoutq");
563         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
564 #endif /* CONFIG_QDIO_DEBUG */
565
566         if (!q->siga_out)
567                 return;
568
569         /* here's the story with cc=2 and busy bit set (thanks, Rick):
570          * VM's CP could present us cc=2 and busy bit set on SIGA-write
571          * during reconfiguration of their Guest LAN (only in HIPERS mode,
572          * QDIO mode is asynchronous -- cc=2 and busy bit there will take
573          * the queues down immediately; and not being under VM we have a
574          * problem on cc=2 and busy bit set right away).
575          *
576          * Therefore qdio_siga_output will try for a short time constantly,
577          * if such a condition occurs. If it doesn't change, it will
578          * increase the busy_siga_counter and save the timestamp, and
579          * schedule the queue for later processing (via mark_q, using the
580          * queue tasklet). __qdio_outbound_processing will check out the
581          * counter. If non-zero, it will call qdio_kick_outbound_q as often
582          * as the value of the counter. This will attempt further SIGA
583          * instructions. For each successful SIGA, the counter is
584          * decreased, for failing SIGAs the counter remains the same, after
585          * all.
586          * After some time of no movement, qdio_kick_outbound_q will
587          * finally fail and reflect corresponding error codes to call
588          * the upper layer module and have it take the queues down.
589          *
590          * Note that this is a change from the original HiperSockets design
591          * (saying cc=2 and busy bit means take the queues down), but in
592          * these days Guest LAN didn't exist... excessive cc=2 with busy bit
593          * conditions will still take the queues down, but the threshold is
594          * higher due to the Guest LAN environment.
595          */
596
597
598         result=qdio_siga_output(q);
599
600                 switch (result) {
601                 case 0:
602                         /* went smooth this time, reset timestamp */
603 #ifdef CONFIG_QDIO_DEBUG
604                         QDIO_DBF_TEXT3(0,trace,"cc2reslv");
605                         sprintf(dbf_text,"%4x%2x%2x",q->irq,q->q_no,
606                                 atomic_read(&q->busy_siga_counter));
607                         QDIO_DBF_TEXT3(0,trace,dbf_text);
608 #endif /* CONFIG_QDIO_DEBUG */
609                         q->timing.busy_start=0;
610                         break;
611                 case (2|QDIO_SIGA_ERROR_B_BIT_SET):
612                         /* cc=2 and busy bit: */
613                         atomic_inc(&q->busy_siga_counter);
614
615                         /* if the last siga was successful, save
616                          * timestamp here */
617                         if (!q->timing.busy_start)
618                                 q->timing.busy_start=NOW;
619
620                         /* if we're in time, don't touch error_status_flags
621                          * and siga_error */
622                         if (NOW-q->timing.busy_start<QDIO_BUSY_BIT_GIVE_UP) {
623                                 qdio_mark_q(q);
624                                 break;
625                         }
626                         QDIO_DBF_TEXT2(0,trace,"cc2REPRT");
627 #ifdef CONFIG_QDIO_DEBUG
628                         sprintf(dbf_text,"%4x%2x%2x",q->irq,q->q_no,
629                                 atomic_read(&q->busy_siga_counter));
630                         QDIO_DBF_TEXT3(0,trace,dbf_text);
631 #endif /* CONFIG_QDIO_DEBUG */
632                         /* else fallthrough and report error */
633                 default:
634                         /* for plain cc=1, 2 or 3: */
635                         if (q->siga_error)
636                                 q->error_status_flags|=
637                                         QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
638                         q->error_status_flags|=
639                                 QDIO_STATUS_LOOK_FOR_ERROR;
640                         q->siga_error=result;
641                 }
642 }
643
644 inline static void
645 qdio_kick_outbound_handler(struct qdio_q *q)
646 {
647         int start, end, real_end, count;
648 #ifdef CONFIG_QDIO_DEBUG
649         char dbf_text[15];
650 #endif
651
652         start = q->first_element_to_kick;
653         /* last_move_ftc was just updated */
654         real_end = GET_SAVED_FRONTIER(q);
655         end = (real_end+QDIO_MAX_BUFFERS_PER_Q-1)&
656                 (QDIO_MAX_BUFFERS_PER_Q-1);
657         count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)&
658                 (QDIO_MAX_BUFFERS_PER_Q-1);
659
660 #ifdef CONFIG_QDIO_DEBUG
661         QDIO_DBF_TEXT4(0,trace,"kickouth");
662         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
663
664         sprintf(dbf_text,"s=%2xc=%2x",start,count);
665         QDIO_DBF_TEXT4(0,trace,dbf_text);
666 #endif /* CONFIG_QDIO_DEBUG */
667
668         if (q->state==QDIO_IRQ_STATE_ACTIVE)
669                 q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT|
670                            q->error_status_flags,
671                            q->qdio_error,q->siga_error,q->q_no,start,count,
672                            q->int_parm);
673
674         /* for the next time: */
675         q->first_element_to_kick=real_end;
676         q->qdio_error=0;
677         q->siga_error=0;
678         q->error_status_flags=0;
679 }
680
681 static inline void
682 __qdio_outbound_processing(struct qdio_q *q)
683 {
684         int siga_attempts;
685
686         QDIO_DBF_TEXT4(0,trace,"qoutproc");
687         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
688
689         if (unlikely(qdio_reserve_q(q))) {
690                 qdio_release_q(q);
691 #ifdef QDIO_PERFORMANCE_STATS
692                 o_p_c++;
693 #endif /* QDIO_PERFORMANCE_STATS */
694                 /* as we're sissies, we'll check next time */
695                 if (likely(!atomic_read(&q->is_in_shutdown))) {
696                         qdio_mark_q(q);
697                         QDIO_DBF_TEXT4(0,trace,"busy,agn");
698                 }
699                 return;
700         }
701 #ifdef QDIO_PERFORMANCE_STATS
702         o_p_nc++;
703         perf_stats.tl_runs++;
704 #endif /* QDIO_PERFORMANCE_STATS */
705
706         /* see comment in qdio_kick_outbound_q */
707         siga_attempts=atomic_read(&q->busy_siga_counter);
708         while (siga_attempts) {
709                 atomic_dec(&q->busy_siga_counter);
710                 qdio_kick_outbound_q(q);
711                 siga_attempts--;
712         }
713
714         if (qdio_has_outbound_q_moved(q))
715                 qdio_kick_outbound_handler(q);
716
717         if (q->is_iqdio_q) {
718                 /* 
719                  * for asynchronous queues, we better check, if the fill
720                  * level is too high. for synchronous queues, the fill
721                  * level will never be that high. 
722                  */
723                 if (atomic_read(&q->number_of_buffers_used)>
724                     IQDIO_FILL_LEVEL_TO_POLL)
725                         qdio_mark_q(q);
726
727         } else if (!q->hydra_gives_outbound_pcis)
728                 if (!qdio_is_outbound_q_done(q))
729                         qdio_mark_q(q);
730
731         qdio_release_q(q);
732 }
733
734 static void
735 qdio_outbound_processing(struct qdio_q *q)
736 {
737         __qdio_outbound_processing(q);
738 }
739
740 /************************* INBOUND ROUTINES *******************************/
741
742
743 inline static int
744 qdio_get_inbound_buffer_frontier(struct qdio_q *q)
745 {
746         int f,f_mod_no;
747         volatile char *slsb;
748         int first_not_to_check;
749 #ifdef CONFIG_QDIO_DEBUG
750         char dbf_text[15];
751 #endif /* CONFIG_QDIO_DEBUG */
752 #ifdef QDIO_USE_PROCESSING_STATE
753         int last_position=-1;
754 #endif /* QDIO_USE_PROCESSING_STATE */
755
756         QDIO_DBF_TEXT4(0,trace,"getibfro");
757         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
758
759         slsb=&q->slsb.acc.val[0];
760         f_mod_no=f=q->first_to_check;
761         /* 
762          * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
763          * would return 0 
764          */
765         first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
766                                       (QDIO_MAX_BUFFERS_PER_Q-1));
767
768         /* 
769          * we don't use this one, as a PCI or we after a thin interrupt
770          * will sync the queues
771          */
772         /* SYNC_MEMORY;*/
773
774 check_next:
775         f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
776         if (f==first_not_to_check) 
777                 goto out;
778         switch (slsb[f_mod_no]) {
779
780         /* CU_EMPTY means frontier is reached */
781         case SLSB_CU_INPUT_EMPTY:
782                 QDIO_DBF_TEXT5(0,trace,"inptempt");
783                 break;
784
785         /* P_PRIMED means set slsb to P_PROCESSING and move on */
786         case SLSB_P_INPUT_PRIMED:
787                 QDIO_DBF_TEXT5(0,trace,"inptprim");
788
789 #ifdef QDIO_USE_PROCESSING_STATE
790                 /* 
791                  * as soon as running under VM, polling the input queues will
792                  * kill VM in terms of CP overhead 
793                  */
794                 if (q->siga_sync) {
795                         set_slsb(&slsb[f_mod_no],SLSB_P_INPUT_NOT_INIT);
796                 } else {
797                         /* set the previous buffer to NOT_INIT. The current
798                          * buffer will be set to PROCESSING at the end of
799                          * this function to avoid further interrupts. */
800                         if (last_position>=0)
801                                 set_slsb(&slsb[last_position],
802                                          SLSB_P_INPUT_NOT_INIT);
803                         atomic_set(&q->polling,1);
804                         last_position=f_mod_no;
805                 }
806 #else /* QDIO_USE_PROCESSING_STATE */
807                 set_slsb(&slsb[f_mod_no],SLSB_P_INPUT_NOT_INIT);
808 #endif /* QDIO_USE_PROCESSING_STATE */
809                 /* 
810                  * not needed, as the inbound queue will be synced on the next
811                  * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
812                  */
813                 /*SYNC_MEMORY;*/
814                 f++;
815                 atomic_dec(&q->number_of_buffers_used);
816                 goto check_next;
817
818         case SLSB_P_INPUT_NOT_INIT:
819         case SLSB_P_INPUT_PROCESSING:
820                 QDIO_DBF_TEXT5(0,trace,"inpnipro");
821                 break;
822
823         /* P_ERROR means frontier is reached, break and report error */
824         case SLSB_P_INPUT_ERROR:
825 #ifdef CONFIG_QDIO_DEBUG
826                 sprintf(dbf_text,"inperr%2x",f_mod_no);
827                 QDIO_DBF_TEXT3(1,trace,dbf_text);
828 #endif /* CONFIG_QDIO_DEBUG */
829                 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
830
831                 /* kind of process the buffer */
832                 set_slsb(&slsb[f_mod_no],SLSB_P_INPUT_NOT_INIT);
833
834                 if (q->qdio_error)
835                         q->error_status_flags|=
836                                 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
837                 q->qdio_error=SLSB_P_INPUT_ERROR;
838                 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
839
840                 /* we increment the frontier, as this buffer
841                  * was processed obviously */
842                 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
843                 atomic_dec(&q->number_of_buffers_used);
844
845 #ifdef QDIO_USE_PROCESSING_STATE
846                 last_position=-1;
847 #endif /* QDIO_USE_PROCESSING_STATE */
848
849                 break;
850
851         /* everything else means frontier not changed (HALTED or so) */
852         default: 
853                 break;
854         }
855 out:
856         q->first_to_check=f_mod_no;
857
858 #ifdef QDIO_USE_PROCESSING_STATE
859         if (last_position>=0)
860                 set_slsb(&slsb[last_position],SLSB_P_INPUT_PROCESSING);
861 #endif /* QDIO_USE_PROCESSING_STATE */
862
863         QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
864
865         return q->first_to_check;
866 }
867
868 inline static int
869 qdio_has_inbound_q_moved(struct qdio_q *q)
870 {
871         int i;
872
873 #ifdef QDIO_PERFORMANCE_STATS
874         static int old_pcis=0;
875         static int old_thinints=0;
876
877         if ((old_pcis==perf_stats.pcis)&&(old_thinints==perf_stats.thinints))
878                 perf_stats.start_time_inbound=NOW;
879         else
880                 old_pcis=perf_stats.pcis;
881 #endif /* QDIO_PERFORMANCE_STATS */
882
883         i=qdio_get_inbound_buffer_frontier(q);
884         if ( (i!=GET_SAVED_FRONTIER(q)) ||
885              (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
886                 SAVE_FRONTIER(q,i);
887                 if ((!q->siga_sync)&&(!q->hydra_gives_outbound_pcis))
888                         SAVE_TIMESTAMP(q);
889
890                 QDIO_DBF_TEXT4(0,trace,"inhasmvd");
891                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
892                 return 1;
893         } else {
894                 QDIO_DBF_TEXT4(0,trace,"inhsntmv");
895                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
896                 return 0;
897         }
898 }
899
900 /* means, no more buffers to be filled */
901 inline static int
902 tiqdio_is_inbound_q_done(struct qdio_q *q)
903 {
904         int no_used;
905 #ifdef CONFIG_QDIO_DEBUG
906         char dbf_text[15];
907 #endif
908
909         no_used=atomic_read(&q->number_of_buffers_used);
910
911         /* propagate the change from 82 to 80 through VM */
912         SYNC_MEMORY;
913
914 #ifdef CONFIG_QDIO_DEBUG
915         if (no_used) {
916                 sprintf(dbf_text,"iqisnt%02x",no_used);
917                 QDIO_DBF_TEXT4(0,trace,dbf_text);
918         } else {
919                 QDIO_DBF_TEXT4(0,trace,"iniqisdo");
920         }
921         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
922 #endif /* CONFIG_QDIO_DEBUG */
923
924         if (!no_used)
925                 return 1;
926
927         if (!q->siga_sync)
928                 /* we'll check for more primed buffers in qeth_stop_polling */
929                 return 0;
930
931         if (q->slsb.acc.val[q->first_to_check]!=SLSB_P_INPUT_PRIMED)
932                 /* 
933                  * nothing more to do, if next buffer is not PRIMED.
934                  * note that we did a SYNC_MEMORY before, that there
935                  * has been a sychnronization.
936                  * we will return 0 below, as there is nothing to do
937                  * (stop_polling not necessary, as we have not been
938                  * using the PROCESSING state 
939                  */
940                 return 0;
941
942         /* 
943          * ok, the next input buffer is primed. that means, that device state 
944          * change indicator and adapter local summary are set, so we will find
945          * it next time.
946          * we will return 0 below, as there is nothing to do, except scheduling
947          * ourselves for the next time. 
948          */
949         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
950         tiqdio_sched_tl();
951         return 0;
952 }
953
954 inline static int
955 qdio_is_inbound_q_done(struct qdio_q *q)
956 {
957         int no_used;
958 #ifdef CONFIG_QDIO_DEBUG
959         char dbf_text[15];
960 #endif
961
962         no_used=atomic_read(&q->number_of_buffers_used);
963
964         /* 
965          * we need that one for synchronization with the adapter, as it
966          * does a kind of PCI avoidance 
967          */
968         SYNC_MEMORY;
969
970         if (!no_used) {
971                 QDIO_DBF_TEXT4(0,trace,"inqisdnA");
972                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
973                 QDIO_DBF_TEXT4(0,trace,dbf_text);
974                 return 1;
975         }
976
977         if (q->slsb.acc.val[q->first_to_check]==SLSB_P_INPUT_PRIMED) {
978                 /* we got something to do */
979                 QDIO_DBF_TEXT4(0,trace,"inqisntA");
980                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
981                 return 0;
982         }
983
984         /* on VM, we don't poll, so the q is always done here */
985         if (q->siga_sync)
986                 return 1;
987         if (q->hydra_gives_outbound_pcis)
988                 return 1;
989
990         /* 
991          * at this point we know, that inbound first_to_check
992          * has (probably) not moved (see qdio_inbound_processing) 
993          */
994         if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) {
995 #ifdef CONFIG_QDIO_DEBUG
996                 QDIO_DBF_TEXT4(0,trace,"inqisdon");
997                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
998                 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
999                 QDIO_DBF_TEXT4(0,trace,dbf_text);
1000 #endif /* CONFIG_QDIO_DEBUG */
1001                 return 1;
1002         } else {
1003 #ifdef CONFIG_QDIO_DEBUG
1004                 QDIO_DBF_TEXT4(0,trace,"inqisntd");
1005                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1006                 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1007                 QDIO_DBF_TEXT4(0,trace,dbf_text);
1008 #endif /* CONFIG_QDIO_DEBUG */
1009                 return 0;
1010         }
1011 }
1012
1013 inline static void
1014 qdio_kick_inbound_handler(struct qdio_q *q)
1015 {
1016         int count, start, end, real_end, i;
1017 #ifdef CONFIG_QDIO_DEBUG
1018         char dbf_text[15];
1019 #endif
1020
1021         QDIO_DBF_TEXT4(0,trace,"kickinh");
1022         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1023
1024         start=q->first_element_to_kick;
1025         real_end=q->first_to_check;
1026         end=(real_end+QDIO_MAX_BUFFERS_PER_Q-1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1027  
1028         i=start;
1029         count=0;
1030         while (1) {
1031                 count++;
1032                 if (i==end)
1033                         break;
1034                 i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1035         }
1036
1037 #ifdef CONFIG_QDIO_DEBUG
1038         sprintf(dbf_text,"s=%2xc=%2x",start,count);
1039         QDIO_DBF_TEXT4(0,trace,dbf_text);
1040 #endif /* CONFIG_QDIO_DEBUG */
1041
1042         if (likely(q->state==QDIO_IRQ_STATE_ACTIVE))
1043                 q->handler(q->cdev,
1044                            QDIO_STATUS_INBOUND_INT|q->error_status_flags,
1045                            q->qdio_error,q->siga_error,q->q_no,start,count,
1046                            q->int_parm);
1047
1048         /* for the next time: */
1049         q->first_element_to_kick=real_end;
1050         q->qdio_error=0;
1051         q->siga_error=0;
1052         q->error_status_flags=0;
1053
1054 #ifdef QDIO_PERFORMANCE_STATS
1055         perf_stats.inbound_time+=NOW-perf_stats.start_time_inbound;
1056         perf_stats.inbound_cnt++;
1057 #endif /* QDIO_PERFORMANCE_STATS */
1058 }
1059
1060 static inline void
1061 __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
1062 {
1063         struct qdio_irq *irq_ptr;
1064         struct qdio_q *oq;
1065         int i;
1066
1067         QDIO_DBF_TEXT4(0,trace,"iqinproc");
1068         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1069
1070         /* 
1071          * we first want to reserve the q, so that we know, that we don't
1072          * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1073          * be set 
1074          */
1075         if (unlikely(qdio_reserve_q(q))) {
1076                 qdio_release_q(q);
1077 #ifdef QDIO_PERFORMANCE_STATS
1078                 ii_p_c++;
1079 #endif /* QDIO_PERFORMANCE_STATS */
1080                 /* 
1081                  * as we might just be about to stop polling, we make
1082                  * sure that we check again at least once more 
1083                  */
1084                 tiqdio_sched_tl();
1085                 return;
1086         }
1087 #ifdef QDIO_PERFORMANCE_STATS
1088         ii_p_nc++;
1089 #endif /* QDIO_PERFORMANCE_STATS */
1090         if (unlikely(atomic_read(&q->is_in_shutdown))) {
1091                 qdio_unmark_q(q);
1092                 goto out;
1093         }
1094
1095         /* 
1096          * we reset spare_ind_was_set, when the queue does not use the
1097          * spare indicator
1098          */
1099         if (spare_ind_was_set)
1100                 spare_ind_was_set = (q->dev_st_chg_ind == &spare_indicator);
1101
1102         if (!(*(q->dev_st_chg_ind)) && !spare_ind_was_set)
1103                 goto out;
1104         /*
1105          * q->dev_st_chg_ind is the indicator, be it shared or not.
1106          * only clear it, if indicator is non-shared
1107          */
1108         if (!spare_ind_was_set)
1109                 tiqdio_clear_summary_bit((__u32*)q->dev_st_chg_ind);
1110
1111         if (q->hydra_gives_outbound_pcis) {
1112                 if (!q->siga_sync_done_on_thinints) {
1113                         SYNC_MEMORY_ALL;
1114                 } else if ((!q->siga_sync_done_on_outb_tis)&&
1115                          (q->hydra_gives_outbound_pcis)) {
1116                         SYNC_MEMORY_ALL_OUTB;
1117                 }
1118         } else {
1119                 SYNC_MEMORY;
1120         }
1121         /*
1122          * maybe we have to do work on our outbound queues... at least
1123          * we have to check the outbound-int-capable thinint-capable
1124          * queues
1125          */
1126         if (q->hydra_gives_outbound_pcis) {
1127                 irq_ptr = (struct qdio_irq*)q->irq_ptr;
1128                 for (i=0;i<irq_ptr->no_output_qs;i++) {
1129                         oq = irq_ptr->output_qs[i];
1130 #ifdef QDIO_PERFORMANCE_STATS
1131                         perf_stats.tl_runs--;
1132 #endif /* QDIO_PERFORMANCE_STATS */
1133                         if (!qdio_is_outbound_q_done(oq))
1134                                 __qdio_outbound_processing(oq);
1135                 }
1136         }
1137
1138         if (!qdio_has_inbound_q_moved(q))
1139                 goto out;
1140
1141         qdio_kick_inbound_handler(q);
1142         if (tiqdio_is_inbound_q_done(q))
1143                 if (!qdio_stop_polling(q)) {
1144                         /* 
1145                          * we set the flags to get into the stuff next time,
1146                          * see also comment in qdio_stop_polling 
1147                          */
1148                         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1149                         tiqdio_sched_tl();
1150                 }
1151 out:
1152         qdio_release_q(q);
1153 }
1154
1155 static void
1156 tiqdio_inbound_processing(struct qdio_q *q)
1157 {
1158         __tiqdio_inbound_processing(q, atomic_read(&spare_indicator_usecount));
1159 }
1160
1161 static inline void
1162 __qdio_inbound_processing(struct qdio_q *q)
1163 {
1164         int q_laps=0;
1165
1166         QDIO_DBF_TEXT4(0,trace,"qinproc");
1167         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1168
1169         if (unlikely(qdio_reserve_q(q))) {
1170                 qdio_release_q(q);
1171 #ifdef QDIO_PERFORMANCE_STATS
1172                 i_p_c++;
1173 #endif /* QDIO_PERFORMANCE_STATS */
1174                 /* as we're sissies, we'll check next time */
1175                 if (likely(!atomic_read(&q->is_in_shutdown))) {
1176                         qdio_mark_q(q);
1177                         QDIO_DBF_TEXT4(0,trace,"busy,agn");
1178                 }
1179                 return;
1180         }
1181 #ifdef QDIO_PERFORMANCE_STATS
1182         i_p_nc++;
1183         perf_stats.tl_runs++;
1184 #endif /* QDIO_PERFORMANCE_STATS */
1185
1186 again:
1187         if (qdio_has_inbound_q_moved(q)) {
1188                 qdio_kick_inbound_handler(q);
1189                 if (!qdio_stop_polling(q)) {
1190                         q_laps++;
1191                         if (q_laps<QDIO_Q_LAPS) 
1192                                 goto again;
1193                 }
1194                 qdio_mark_q(q);
1195         } else {
1196                 if (!qdio_is_inbound_q_done(q)) 
1197                         /* means poll time is not yet over */
1198                         qdio_mark_q(q);
1199         }
1200
1201         qdio_release_q(q);
1202 }
1203
1204 static void
1205 qdio_inbound_processing(struct qdio_q *q)
1206 {
1207         __qdio_inbound_processing(q);
1208 }
1209
1210 /************************* MAIN ROUTINES *******************************/
1211
1212 #ifdef QDIO_USE_PROCESSING_STATE
1213 static inline int
1214 tiqdio_reset_processing_state(struct qdio_q *q, int q_laps)
1215 {
1216         if (!q) {
1217                 tiqdio_sched_tl();
1218                 return 0;
1219         }
1220
1221         /* 
1222          * under VM, we have not used the PROCESSING state, so no
1223          * need to stop polling 
1224          */
1225         if (q->siga_sync)
1226                 return 2;
1227
1228         if (unlikely(qdio_reserve_q(q))) {
1229                 qdio_release_q(q);
1230 #ifdef QDIO_PERFORMANCE_STATS
1231                 ii_p_c++;
1232 #endif /* QDIO_PERFORMANCE_STATS */
1233                 /* 
1234                  * as we might just be about to stop polling, we make
1235                  * sure that we check again at least once more 
1236                  */
1237                 
1238                 /* 
1239                  * sanity -- we'd get here without setting the
1240                  * dev st chg ind 
1241                  */
1242                 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1243                 tiqdio_sched_tl();
1244                 return 0;
1245         }
1246         if (qdio_stop_polling(q)) {
1247                 qdio_release_q(q);
1248                 return 2;
1249         }               
1250         if (q_laps<QDIO_Q_LAPS-1) {
1251                 qdio_release_q(q);
1252                 return 3;
1253         }
1254         /* 
1255          * we set the flags to get into the stuff
1256          * next time, see also comment in qdio_stop_polling 
1257          */
1258         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1259         tiqdio_sched_tl();
1260         qdio_release_q(q);
1261         return 1;
1262         
1263 }
1264 #endif /* QDIO_USE_PROCESSING_STATE */
1265
1266 static inline void
1267 tiqdio_inbound_checks(void)
1268 {
1269         struct qdio_q *q;
1270         int spare_ind_was_set=0;
1271 #ifdef QDIO_USE_PROCESSING_STATE
1272         int q_laps=0;
1273 #endif /* QDIO_USE_PROCESSING_STATE */
1274
1275         QDIO_DBF_TEXT4(0,trace,"iqdinbck");
1276         QDIO_DBF_TEXT5(0,trace,"iqlocsum");
1277
1278 #ifdef QDIO_USE_PROCESSING_STATE
1279 again:
1280 #endif /* QDIO_USE_PROCESSING_STATE */
1281
1282         /* when the spare indicator is used and set, save that and clear it */
1283         if ((atomic_read(&spare_indicator_usecount)) && spare_indicator) {
1284                 spare_ind_was_set = 1;
1285                 tiqdio_clear_summary_bit((__u32*)&spare_indicator);
1286         }
1287
1288         q=(struct qdio_q*)tiq_list;
1289         do {
1290                 if (!q)
1291                         break;
1292                 __tiqdio_inbound_processing(q, spare_ind_was_set);
1293                 q=(struct qdio_q*)q->list_next;
1294         } while (q!=(struct qdio_q*)tiq_list);
1295
1296 #ifdef QDIO_USE_PROCESSING_STATE
1297         q=(struct qdio_q*)tiq_list;
1298         do {
1299                 int ret;
1300
1301                 ret = tiqdio_reset_processing_state(q, q_laps);
1302                 switch (ret) {
1303                 case 0:
1304                         return;
1305                 case 1:
1306                         q_laps++;
1307                 case 2:
1308                         q = (struct qdio_q*)q->list_next;
1309                         break;
1310                 default:
1311                         q_laps++;
1312                         goto again;
1313                 }
1314         } while (q!=(struct qdio_q*)tiq_list);
1315 #endif /* QDIO_USE_PROCESSING_STATE */
1316 }
1317
1318 static void
1319 tiqdio_tl(unsigned long data)
1320 {
1321         QDIO_DBF_TEXT4(0,trace,"iqdio_tl");
1322
1323 #ifdef QDIO_PERFORMANCE_STATS
1324         perf_stats.tl_runs++;
1325 #endif /* QDIO_PERFORMANCE_STATS */
1326
1327         tiqdio_inbound_checks();
1328 }
1329
1330 /********************* GENERAL HELPER_ROUTINES ***********************/
1331
1332 static void
1333 qdio_release_irq_memory(struct qdio_irq *irq_ptr)
1334 {
1335         int i;
1336
1337         for (i=0;i<QDIO_MAX_QUEUES_PER_IRQ;i++) {
1338                 if (!irq_ptr->input_qs[i])
1339                         goto next;
1340
1341                 if (irq_ptr->input_qs[i]->slib)
1342                         kfree(irq_ptr->input_qs[i]->slib);
1343                 kfree(irq_ptr->input_qs[i]);
1344
1345 next:
1346                 if (!irq_ptr->output_qs[i])
1347                         continue;
1348
1349                 if (irq_ptr->output_qs[i]->slib)
1350                         kfree(irq_ptr->output_qs[i]->slib);
1351                 kfree(irq_ptr->output_qs[i]);
1352
1353         }
1354         kfree(irq_ptr->qdr);
1355         kfree(irq_ptr);
1356 }
1357
1358 static void
1359 qdio_set_impl_params(struct qdio_irq *irq_ptr,
1360                      unsigned int qib_param_field_format,
1361                      /* pointer to 128 bytes or NULL, if no param field */
1362                      unsigned char *qib_param_field,
1363                      /* pointer to no_queues*128 words of data or NULL */
1364                      unsigned int no_input_qs,
1365                      unsigned int no_output_qs,
1366                      unsigned long *input_slib_elements,
1367                      unsigned long *output_slib_elements)
1368 {
1369         int i,j;
1370
1371         if (!irq_ptr)
1372                 return;
1373
1374         irq_ptr->qib.pfmt=qib_param_field_format;
1375         if (qib_param_field)
1376                 memcpy(irq_ptr->qib.parm,qib_param_field,
1377                        QDIO_MAX_BUFFERS_PER_Q);
1378
1379         if (input_slib_elements)
1380                 for (i=0;i<no_input_qs;i++) {
1381                         for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1382                                 irq_ptr->input_qs[i]->slib->slibe[j].parms=
1383                                         input_slib_elements[
1384                                                 i*QDIO_MAX_BUFFERS_PER_Q+j];
1385                 }
1386         if (output_slib_elements)
1387                 for (i=0;i<no_output_qs;i++) {
1388                         for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1389                                 irq_ptr->output_qs[i]->slib->slibe[j].parms=
1390                                         output_slib_elements[
1391                                                 i*QDIO_MAX_BUFFERS_PER_Q+j];
1392                 }
1393 }
1394
1395 static int
1396 qdio_alloc_qs(struct qdio_irq *irq_ptr,
1397               int no_input_qs, int no_output_qs)
1398 {
1399         int i;
1400         struct qdio_q *q;
1401         int result=-ENOMEM;
1402
1403         for (i=0;i<no_input_qs;i++) {
1404                 q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL);
1405
1406                 if (!q) {
1407                         QDIO_PRINT_ERR("kmalloc of q failed!\n");
1408                         goto out;
1409                 }
1410
1411                 memset(q,0,sizeof(struct qdio_q));
1412
1413                 q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
1414                 if (!q->slib) {
1415                         QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1416                         goto out;
1417                 }
1418
1419                 irq_ptr->input_qs[i]=q;
1420         }
1421
1422         for (i=0;i<no_output_qs;i++) {
1423                 q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL);
1424
1425                 if (!q) {
1426                         goto out;
1427                 }
1428
1429                 memset(q,0,sizeof(struct qdio_q));
1430
1431                 q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
1432                 if (!q->slib) {
1433                         QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1434                         goto out;
1435                 }
1436
1437                 irq_ptr->output_qs[i]=q;
1438         }
1439
1440         result=0;
1441 out:
1442         return result;
1443 }
1444
1445 static void
1446 qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev,
1447              int no_input_qs, int no_output_qs,
1448              qdio_handler_t *input_handler,
1449              qdio_handler_t *output_handler,
1450              unsigned long int_parm,int q_format,
1451              unsigned long flags,
1452              void **inbound_sbals_array,
1453              void **outbound_sbals_array)
1454 {
1455         struct qdio_q *q;
1456         int i,j;
1457         char dbf_text[20]; /* see qdio_initialize */
1458         void *ptr;
1459         int available;
1460
1461         sprintf(dbf_text,"qfqs%4x",cdev->private->irq);
1462         QDIO_DBF_TEXT0(0,setup,dbf_text);
1463         for (i=0;i<no_input_qs;i++) {
1464                 q=irq_ptr->input_qs[i];
1465
1466                 memset(q,0,((char*)&q->slib)-((char*)q));
1467                 sprintf(dbf_text,"in-q%4x",i);
1468                 QDIO_DBF_TEXT0(0,setup,dbf_text);
1469                 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1470
1471                 memset(q->slib,0,PAGE_SIZE);
1472                 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1473
1474                 available=0;
1475
1476                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1477                         q->sbal[j]=*(inbound_sbals_array++);
1478
1479                 q->queue_type=q_format;
1480                 q->int_parm=int_parm;
1481                 q->irq=irq_ptr->irq;
1482                 q->irq_ptr = irq_ptr;
1483                 q->cdev = cdev;
1484                 q->mask=1<<(31-i);
1485                 q->q_no=i;
1486                 q->is_input_q=1;
1487                 q->first_to_check=0;
1488                 q->last_move_ftc=0;
1489                 q->handler=input_handler;
1490                 q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
1491
1492                 q->tasklet.data=(unsigned long)q;
1493                 /* q->is_thinint_q isn't valid at this time, but
1494                  * irq_ptr->is_thinint_irq is */
1495                 q->tasklet.func=(void(*)(unsigned long))
1496                         ((irq_ptr->is_thinint_irq)?&tiqdio_inbound_processing:
1497                          &qdio_inbound_processing);
1498
1499                 /* actually this is not used for inbound queues. yet. */
1500                 atomic_set(&q->busy_siga_counter,0);
1501                 q->timing.busy_start=0;
1502
1503 /*              for (j=0;j<QDIO_STATS_NUMBER;j++)
1504                         q->timing.last_transfer_times[j]=(qdio_get_micros()/
1505                                                           QDIO_STATS_NUMBER)*j;
1506                 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1507 */
1508
1509                 /* fill in slib */
1510                 if (i>0) irq_ptr->input_qs[i-1]->slib->nsliba=
1511                                  (unsigned long)(q->slib);
1512                 q->slib->sla=(unsigned long)(q->sl);
1513                 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1514
1515                 /* fill in sl */
1516                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1517                         q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1518
1519                 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1520                 ptr=(void*)q->sl;
1521                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1522                 ptr=(void*)&q->slsb;
1523                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1524                 ptr=(void*)q->sbal[0];
1525                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1526
1527                 /* fill in slsb */
1528                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) {
1529                         set_slsb(&q->slsb.acc.val[j],
1530                                  SLSB_P_INPUT_NOT_INIT);
1531 /*                      q->sbal[j]->element[1].sbalf.i1.key=QDIO_STORAGE_KEY;*/
1532                 }
1533         }
1534
1535         for (i=0;i<no_output_qs;i++) {
1536                 q=irq_ptr->output_qs[i];
1537                 memset(q,0,((char*)&q->slib)-((char*)q));
1538
1539                 sprintf(dbf_text,"outq%4x",i);
1540                 QDIO_DBF_TEXT0(0,setup,dbf_text);
1541                 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1542
1543                 memset(q->slib,0,PAGE_SIZE);
1544                 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1545
1546                 available=0;
1547                 
1548                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1549                         q->sbal[j]=*(outbound_sbals_array++);
1550
1551                 q->queue_type=q_format;
1552                 q->int_parm=int_parm;
1553                 q->is_input_q=0;
1554                 q->irq=irq_ptr->irq;
1555                 q->cdev = cdev;
1556                 q->irq_ptr = irq_ptr;
1557                 q->mask=1<<(31-i);
1558                 q->q_no=i;
1559                 q->first_to_check=0;
1560                 q->last_move_ftc=0;
1561                 q->handler=output_handler;
1562
1563                 q->tasklet.data=(unsigned long)q;
1564                 q->tasklet.func=(void(*)(unsigned long))
1565                         &qdio_outbound_processing;
1566
1567                 atomic_set(&q->busy_siga_counter,0);
1568                 q->timing.busy_start=0;
1569
1570                 /* fill in slib */
1571                 if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba=
1572                                  (unsigned long)(q->slib);
1573                 q->slib->sla=(unsigned long)(q->sl);
1574                 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1575
1576                 /* fill in sl */
1577                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1578                         q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1579
1580                 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1581                 ptr=(void*)q->sl;
1582                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1583                 ptr=(void*)&q->slsb;
1584                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1585                 ptr=(void*)q->sbal[0];
1586                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1587
1588                 /* fill in slsb */
1589                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) {
1590                         set_slsb(&q->slsb.acc.val[j],
1591                                  SLSB_P_OUTPUT_NOT_INIT);
1592 /*                      q->sbal[j]->element[1].sbalf.i1.key=QDIO_STORAGE_KEY;*/
1593                 }
1594         }
1595 }
1596
1597 static void
1598 qdio_fill_thresholds(struct qdio_irq *irq_ptr,
1599                      unsigned int no_input_qs,
1600                      unsigned int no_output_qs,
1601                      unsigned int min_input_threshold,
1602                      unsigned int max_input_threshold,
1603                      unsigned int min_output_threshold,
1604                      unsigned int max_output_threshold)
1605 {
1606         int i;
1607         struct qdio_q *q;
1608
1609         for (i=0;i<no_input_qs;i++) {
1610                 q=irq_ptr->input_qs[i];
1611                 q->timing.threshold=max_input_threshold;
1612 /*              for (j=0;j<QDIO_STATS_CLASSES;j++) {
1613                         q->threshold_classes[j].threshold=
1614                                 min_input_threshold+
1615                                 (max_input_threshold-min_input_threshold)/
1616                                 QDIO_STATS_CLASSES;
1617                 }
1618                 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1619         }
1620         for (i=0;i<no_output_qs;i++) {
1621                 q=irq_ptr->output_qs[i];
1622                 q->timing.threshold=max_output_threshold;
1623 /*              for (j=0;j<QDIO_STATS_CLASSES;j++) {
1624                         q->threshold_classes[j].threshold=
1625                                 min_output_threshold+
1626                                 (max_output_threshold-min_output_threshold)/
1627                                 QDIO_STATS_CLASSES;
1628                 }
1629                 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1630         }
1631 }
1632
1633 static int
1634 tiqdio_thinint_handler(void)
1635 {
1636         QDIO_DBF_TEXT4(0,trace,"thin_int");
1637
1638 #ifdef QDIO_PERFORMANCE_STATS
1639         perf_stats.thinints++;
1640         perf_stats.start_time_inbound=NOW;
1641 #endif /* QDIO_PERFORMANCE_STATS */
1642
1643         /* SVS only when needed:
1644          * issue SVS to benefit from iqdio interrupt avoidance
1645          * (SVS clears AISOI)*/
1646         if (!omit_svs)
1647                 tiqdio_clear_global_summary();
1648
1649         tiqdio_inbound_checks();
1650         return 0;
1651 }
1652
1653 static void
1654 qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state)
1655 {
1656         int i;
1657 #ifdef CONFIG_QDIO_DEBUG
1658         char dbf_text[15];
1659
1660         QDIO_DBF_TEXT5(0,trace,"newstate");
1661         sprintf(dbf_text,"%4x%4x",irq_ptr->irq,state);
1662         QDIO_DBF_TEXT5(0,trace,dbf_text);
1663 #endif /* CONFIG_QDIO_DEBUG */
1664
1665         irq_ptr->state=state;
1666         for (i=0;i<irq_ptr->no_input_qs;i++)
1667                 irq_ptr->input_qs[i]->state=state;
1668         for (i=0;i<irq_ptr->no_output_qs;i++)
1669                 irq_ptr->output_qs[i]->state=state;
1670         mb();
1671 }
1672
1673 static inline void
1674 qdio_irq_check_sense(int irq, struct irb *irb)
1675 {
1676         char dbf_text[15];
1677
1678         if (irb->esw.esw0.erw.cons) {
1679                 sprintf(dbf_text,"sens%4x",irq);
1680                 QDIO_DBF_TEXT2(1,trace,dbf_text);
1681                 QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN);
1682
1683                 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1684                 HEXDUMP16(WARN,"irb: ",irb);
1685                 HEXDUMP16(WARN,"sense data: ",irb->ecw);
1686         }
1687                 
1688 }
1689
1690 static inline void
1691 qdio_handle_pci(struct qdio_irq *irq_ptr)
1692 {
1693         int i;
1694         struct qdio_q *q;
1695
1696 #ifdef QDIO_PERFORMANCE_STATS
1697         perf_stats.pcis++;
1698         perf_stats.start_time_inbound=NOW;
1699 #endif /* QDIO_PERFORMANCE_STATS */
1700         for (i=0;i<irq_ptr->no_input_qs;i++) {
1701                 q=irq_ptr->input_qs[i];
1702                 if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
1703                         qdio_mark_q(q);
1704                 else {
1705 #ifdef QDIO_PERFORMANCE_STATS
1706                         perf_stats.tl_runs--;
1707 #endif /* QDIO_PERFORMANCE_STATS */
1708                         __qdio_inbound_processing(q);
1709                 }
1710         }
1711         if (!irq_ptr->hydra_gives_outbound_pcis)
1712                 return;
1713         for (i=0;i<irq_ptr->no_output_qs;i++) {
1714                 q=irq_ptr->output_qs[i];
1715 #ifdef QDIO_PERFORMANCE_STATS
1716                 perf_stats.tl_runs--;
1717 #endif /* QDIO_PERFORMANCE_STATS */
1718                 if (qdio_is_outbound_q_done(q))
1719                         continue;
1720                 if (!irq_ptr->sync_done_on_outb_pcis)
1721                         SYNC_MEMORY;
1722                 __qdio_outbound_processing(q);
1723         }
1724 }
1725
1726 static void qdio_establish_handle_irq(struct ccw_device*, int, int);
1727
1728 static inline void
1729 qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm,
1730                            int cstat, int dstat)
1731 {
1732         struct qdio_irq *irq_ptr;
1733         struct qdio_q *q;
1734         char dbf_text[15];
1735
1736         irq_ptr = cdev->private->qdio_data;
1737
1738         QDIO_DBF_TEXT2(1, trace, "ick2");
1739         sprintf(dbf_text,"%s", cdev->dev.bus_id);
1740         QDIO_DBF_TEXT2(1,trace,dbf_text);
1741         QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int));
1742         QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
1743         QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
1744         QDIO_PRINT_ERR("received check condition on activate " \
1745                        "queues on device %s (cs=x%x, ds=x%x).\n",
1746                        cdev->dev.bus_id, cstat, dstat);
1747         if (irq_ptr->no_input_qs) {
1748                 q=irq_ptr->input_qs[0];
1749         } else if (irq_ptr->no_output_qs) {
1750                 q=irq_ptr->output_qs[0];
1751         } else {
1752                 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
1753                                cdev->dev.bus_id);
1754                 goto omit_handler_call;
1755         }
1756         q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
1757                    QDIO_STATUS_LOOK_FOR_ERROR,
1758                    0,0,0,-1,-1,q->int_parm);
1759 omit_handler_call:
1760         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED);
1761
1762 }
1763
1764 static void
1765 qdio_call_shutdown(void *data)
1766 {
1767         struct ccw_device *cdev;
1768
1769         cdev = (struct ccw_device *)data;
1770         qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
1771         put_device(&cdev->dev);
1772 }
1773
1774 static void
1775 qdio_timeout_handler(struct ccw_device *cdev)
1776 {
1777         struct qdio_irq *irq_ptr;
1778         char dbf_text[15];
1779
1780         QDIO_DBF_TEXT2(0, trace, "qtoh");
1781         sprintf(dbf_text, "%s", cdev->dev.bus_id);
1782         QDIO_DBF_TEXT2(0, trace, dbf_text);
1783
1784         irq_ptr = cdev->private->qdio_data;
1785         sprintf(dbf_text, "state:%d", irq_ptr->state);
1786         QDIO_DBF_TEXT2(0, trace, dbf_text);
1787
1788         switch (irq_ptr->state) {
1789         case QDIO_IRQ_STATE_INACTIVE:
1790                 QDIO_PRINT_ERR("establish queues on irq %04x: timed out\n",
1791                                irq_ptr->irq);
1792                 QDIO_DBF_TEXT2(1,setup,"eq:timeo");
1793                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
1794                 break;
1795         case QDIO_IRQ_STATE_CLEANUP:
1796                 QDIO_PRINT_INFO("Did not get interrupt on cleanup, irq=0x%x.\n",
1797                                 irq_ptr->irq);
1798                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
1799                 break;
1800         case QDIO_IRQ_STATE_ESTABLISHED:
1801         case QDIO_IRQ_STATE_ACTIVE:
1802                 /* I/O has been terminated by common I/O layer. */
1803                 QDIO_PRINT_INFO("Queues on irq %04x killed by cio.\n",
1804                                 irq_ptr->irq);
1805                 QDIO_DBF_TEXT2(1, trace, "cio:term");
1806                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
1807                 if (get_device(&cdev->dev)) {
1808                         /* Can't call shutdown from interrupt context. */
1809                         PREPARE_WORK(&cdev->private->kick_work,
1810                                      qdio_call_shutdown, (void *)cdev);
1811                         queue_work(ccw_device_work, &cdev->private->kick_work);
1812                 }
1813                 break;
1814         default:
1815                 BUG();
1816         }
1817         ccw_device_set_timeout(cdev, 0);
1818         wake_up(&cdev->private->wait_q);
1819 }
1820
1821 static void
1822 qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
1823 {
1824         struct qdio_irq *irq_ptr;
1825         int cstat,dstat;
1826         char dbf_text[15];
1827
1828 #ifdef CONFIG_QDIO_DEBUG
1829         QDIO_DBF_TEXT4(0, trace, "qint");
1830         sprintf(dbf_text, "%s", cdev->dev.bus_id);
1831         QDIO_DBF_TEXT4(0, trace, dbf_text);
1832 #endif /* CONFIG_QDIO_DEBUG */
1833         
1834         if (!intparm) {
1835                 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
1836                                   "handler, device %s\n", cdev->dev.bus_id);
1837                 return;
1838         }
1839
1840         irq_ptr = cdev->private->qdio_data;
1841         if (!irq_ptr) {
1842                 QDIO_DBF_TEXT2(1, trace, "uint");
1843                 sprintf(dbf_text,"%s", cdev->dev.bus_id);
1844                 QDIO_DBF_TEXT2(1,trace,dbf_text);
1845                 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
1846                                cdev->dev.bus_id);
1847                 return;
1848         }
1849
1850         if (IS_ERR(irb)) {
1851                 /* Currently running i/o is in error. */
1852                 switch (PTR_ERR(irb)) {
1853                 case -EIO:
1854                         QDIO_PRINT_ERR("i/o error on device %s\n",
1855                                        cdev->dev.bus_id);
1856                         return;
1857                 case -ETIMEDOUT:
1858                         qdio_timeout_handler(cdev);
1859                         return;
1860                 default:
1861                         QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
1862                                        PTR_ERR(irb), cdev->dev.bus_id);
1863                         return;
1864                 }
1865         }
1866
1867         qdio_irq_check_sense(irq_ptr->irq, irb);
1868
1869 #ifdef CONFIG_QDIO_DEBUG
1870         sprintf(dbf_text, "state:%d", irq_ptr->state);
1871         QDIO_DBF_TEXT4(0, trace, dbf_text);
1872 #endif /* CONFIG_QDIO_DEBUG */
1873
1874         cstat = irb->scsw.cstat;
1875         dstat = irb->scsw.dstat;
1876
1877         switch (irq_ptr->state) {
1878         case QDIO_IRQ_STATE_INACTIVE:
1879                 qdio_establish_handle_irq(cdev, cstat, dstat);
1880                 break;
1881
1882         case QDIO_IRQ_STATE_CLEANUP:
1883                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
1884                 break;
1885
1886         case QDIO_IRQ_STATE_ESTABLISHED:
1887         case QDIO_IRQ_STATE_ACTIVE:
1888                 if (cstat & SCHN_STAT_PCI) {
1889                         qdio_handle_pci(irq_ptr);
1890                         break;
1891                 }
1892
1893                 if ((cstat&~SCHN_STAT_PCI)||dstat) {
1894                         qdio_handle_activate_check(cdev, intparm, cstat, dstat);
1895                         break;
1896                 }
1897         default:
1898                 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
1899                                "device %s?!\n",
1900                                irq_ptr->state, cdev->dev.bus_id);
1901         }
1902         wake_up(&cdev->private->wait_q);
1903
1904 }
1905
1906 int
1907 qdio_synchronize(struct ccw_device *cdev, unsigned int flags,
1908                  unsigned int queue_number)
1909 {
1910         int cc;
1911         struct qdio_q *q;
1912         struct qdio_irq *irq_ptr;
1913         void *ptr;
1914 #ifdef CONFIG_QDIO_DEBUG
1915         char dbf_text[15]="SyncXXXX";
1916 #endif
1917
1918         irq_ptr = cdev->private->qdio_data;
1919         if (!irq_ptr)
1920                 return -ENODEV;
1921
1922 #ifdef CONFIG_QDIO_DEBUG
1923         *((int*)(&dbf_text[4])) = irq_ptr->irq;
1924         QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
1925         *((int*)(&dbf_text[0]))=flags;
1926         *((int*)(&dbf_text[4]))=queue_number;
1927         QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
1928 #endif /* CONFIG_QDIO_DEBUG */
1929
1930         if (flags&QDIO_FLAG_SYNC_INPUT) {
1931                 q=irq_ptr->input_qs[queue_number];
1932                 if (!q)
1933                         return -EINVAL;
1934                 cc = do_siga_sync(q->irq, 0, q->mask);
1935         } else if (flags&QDIO_FLAG_SYNC_OUTPUT) {
1936                 q=irq_ptr->output_qs[queue_number];
1937                 if (!q)
1938                         return -EINVAL;
1939                 cc = do_siga_sync(q->irq, q->mask, 0);
1940         } else 
1941                 return -EINVAL;
1942
1943         ptr=&cc;
1944         if (cc)
1945                 QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int));
1946
1947         return cc;
1948 }
1949
1950 static unsigned char
1951 qdio_check_siga_needs(int sch)
1952 {
1953         int result;
1954         unsigned char qdioac;
1955
1956         struct {
1957                 struct chsc_header request;
1958                 u16 reserved1;
1959                 u16 first_sch;
1960                 u16 reserved2;
1961                 u16 last_sch;
1962                 u32 reserved3;
1963                 struct chsc_header response;
1964                 u32 reserved4;
1965                 u8  flags;
1966                 u8  reserved5;
1967                 u16 sch;
1968                 u8  qfmt;
1969                 u8  reserved6;
1970                 u8  qdioac;
1971                 u8  sch_class;
1972                 u8  reserved7;
1973                 u8  icnt;
1974                 u8  reserved8;
1975                 u8  ocnt;
1976         } *ssqd_area;
1977
1978         ssqd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
1979         if (!ssqd_area) {
1980                 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
1981                                 "SIGAs for sch x%x.\n", sch);
1982                 return CHSC_FLAG_SIGA_INPUT_NECESSARY ||
1983                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
1984                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
1985         }
1986         ssqd_area->request = (struct chsc_header) {
1987                 .length = 0x0010,
1988                 .code   = 0x0024,
1989         };
1990
1991         ssqd_area->first_sch = sch;
1992         ssqd_area->last_sch = sch;
1993
1994         result=chsc(ssqd_area);
1995
1996         if (result) {
1997                 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
1998                                 "SIGAs for sch x%x.\n",
1999                                 result,sch);
2000                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2001                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2002                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2003                 goto out;
2004         }
2005
2006         if (ssqd_area->response.code != QDIO_CHSC_RESPONSE_CODE_OK) {
2007                 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2008                                 "is 0x%x. Using all SIGAs for sch x%x.\n",
2009                                 ssqd_area->response.code, sch);
2010                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2011                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2012                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2013                 goto out;
2014         }
2015         if (!(ssqd_area->flags & CHSC_FLAG_QDIO_CAPABILITY) ||
2016             !(ssqd_area->flags & CHSC_FLAG_VALIDITY) ||
2017             (ssqd_area->sch != sch)) {
2018                 QDIO_PRINT_WARN("huh? problems checking out sch x%x... " \
2019                                 "using all SIGAs.\n",sch);
2020                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2021                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2022                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* worst case */
2023                 goto out;
2024         }
2025
2026         qdioac = ssqd_area->qdioac;
2027 out:
2028         free_page ((unsigned long) ssqd_area);
2029         return qdioac;
2030 }
2031
2032 static unsigned int
2033 tiqdio_check_chsc_availability(void)
2034 {
2035         char dbf_text[15];
2036
2037         if (!css_characteristics_avail)
2038                 return -EIO;
2039
2040         /* Check for bit 41. */
2041         if (!css_general_characteristics.aif) {
2042                 QDIO_PRINT_WARN("Adapter interruption facility not " \
2043                                 "installed.\n");
2044                 return -ENOENT;
2045         }
2046
2047         /* Check for bits 107 and 108. */
2048         if (!css_chsc_characteristics.scssc ||
2049             !css_chsc_characteristics.scsscf) {
2050                 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2051                                 "not available.\n");
2052                 return -ENOENT;
2053         }
2054
2055         /* Check for OSA/FCP thin interrupts (bit 67). */
2056         hydra_thinints = css_general_characteristics.aif_osa;
2057         sprintf(dbf_text,"hydrati%1x", hydra_thinints);
2058         QDIO_DBF_TEXT0(0,setup,dbf_text);
2059
2060         /* Check for aif time delay disablement fac (bit 56). If installed,
2061          * omit svs even under lpar (good point by rick again) */
2062         omit_svs = css_general_characteristics.aif_tdd;
2063         sprintf(dbf_text,"omitsvs%1x", omit_svs);
2064         QDIO_DBF_TEXT0(0,setup,dbf_text);
2065         return 0;
2066 }
2067
2068
2069 static unsigned int
2070 tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2071 {
2072         unsigned long real_addr_local_summary_bit;
2073         unsigned long real_addr_dev_st_chg_ind;
2074         void *ptr;
2075         char dbf_text[15];
2076
2077         unsigned int resp_code;
2078         int result;
2079
2080         struct {
2081                 struct chsc_header request;
2082                 u16 operation_code;
2083                 u16 reserved1;
2084                 u32 reserved2;
2085                 u32 reserved3;
2086                 u64 summary_indicator_addr;
2087                 u64 subchannel_indicator_addr;
2088                 u32 ks:4;
2089                 u32 kc:4;
2090                 u32 reserved4:21;
2091                 u32 isc:3;
2092                 u32 word_with_d_bit;
2093                 /* set to 0x10000000 to enable
2094                  * time delay disablement facility */
2095                 u32 reserved5;
2096                 u32 subsystem_id;
2097                 u32 reserved6[1004];
2098                 struct chsc_header response;
2099                 u32 reserved7;
2100         } *scssc_area;
2101
2102         if (!irq_ptr->is_thinint_irq)
2103                 return -ENODEV;
2104
2105         if (reset_to_zero) {
2106                 real_addr_local_summary_bit=0;
2107                 real_addr_dev_st_chg_ind=0;
2108         } else {
2109                 real_addr_local_summary_bit=
2110                         virt_to_phys((volatile void *)indicators);
2111                 real_addr_dev_st_chg_ind=
2112                         virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
2113         }
2114
2115         scssc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
2116         if (!scssc_area) {
2117                 QDIO_PRINT_WARN("No memory for setting indicators on " \
2118                                 "subchannel x%x.\n", irq_ptr->irq);
2119                 return -ENOMEM;
2120         }
2121         scssc_area->request = (struct chsc_header) {
2122                 .length = 0x0fe0,
2123                 .code   = 0x0021,
2124         };
2125         scssc_area->operation_code = 0;
2126
2127         scssc_area->summary_indicator_addr = real_addr_local_summary_bit;
2128         scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind;
2129         scssc_area->ks = QDIO_STORAGE_KEY;
2130         scssc_area->kc = QDIO_STORAGE_KEY;
2131         scssc_area->isc = TIQDIO_THININT_ISC;
2132         scssc_area->subsystem_id = (1<<16) + irq_ptr->irq;
2133         /* enables the time delay disablement facility. Don't care
2134          * whether it is really there (i.e. we haven't checked for
2135          * it) */
2136         if (css_general_characteristics.aif_tdd)
2137                 scssc_area->word_with_d_bit = 0x10000000;
2138         else
2139                 QDIO_PRINT_WARN("Time delay disablement facility " \
2140                                 "not available\n");
2141
2142
2143
2144         result = chsc(scssc_area);
2145         if (result) {
2146                 QDIO_PRINT_WARN("could not set indicators on irq x%x, " \
2147                                 "cc=%i.\n",irq_ptr->irq,result);
2148                 result = -EIO;
2149                 goto out;
2150         }
2151
2152         resp_code = scssc_area->response.code;
2153         if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2154                 QDIO_PRINT_WARN("response upon setting indicators " \
2155                                 "is 0x%x.\n",resp_code);
2156                 sprintf(dbf_text,"sidR%4x",resp_code);
2157                 QDIO_DBF_TEXT1(0,trace,dbf_text);
2158                 QDIO_DBF_TEXT1(0,setup,dbf_text);
2159                 ptr=&scssc_area->response;
2160                 QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN);
2161                 result = -EIO;
2162                 goto out;
2163         }
2164
2165         QDIO_DBF_TEXT2(0,setup,"setscind");
2166         QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit,
2167                       sizeof(unsigned long));
2168         QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
2169         result = 0;
2170 out:
2171         free_page ((unsigned long) scssc_area);
2172         return result;
2173
2174 }
2175
2176 static unsigned int
2177 tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2178 {
2179         unsigned int resp_code;
2180         int result;
2181         void *ptr;
2182         char dbf_text[15];
2183
2184         struct {
2185                 struct chsc_header request;
2186                 u16 operation_code;
2187                 u16 reserved1;
2188                 u32 reserved2;
2189                 u32 reserved3;
2190                 u32 reserved4[2];
2191                 u32 delay_target;
2192                 u32 reserved5[1009];
2193                 struct chsc_header response;
2194                 u32 reserved6;
2195         } *scsscf_area;
2196
2197         if (!irq_ptr->is_thinint_irq)
2198                 return -ENODEV;
2199
2200         scsscf_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
2201         if (!scsscf_area) {
2202                 QDIO_PRINT_WARN("No memory for setting delay target on " \
2203                                 "subchannel x%x.\n", irq_ptr->irq);
2204                 return -ENOMEM;
2205         }
2206         scsscf_area->request = (struct chsc_header) {
2207                 .length = 0x0fe0,
2208                 .code   = 0x1027,
2209         };
2210
2211         scsscf_area->delay_target = delay_target<<16;
2212
2213         result=chsc(scsscf_area);
2214         if (result) {
2215                 QDIO_PRINT_WARN("could not set delay target on irq x%x, " \
2216                                 "cc=%i. Continuing.\n",irq_ptr->irq,result);
2217                 result = -EIO;
2218                 goto out;
2219         }
2220
2221         resp_code = scsscf_area->response.code;
2222         if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2223                 QDIO_PRINT_WARN("response upon setting delay target " \
2224                                 "is 0x%x. Continuing.\n",resp_code);
2225                 sprintf(dbf_text,"sdtR%4x",resp_code);
2226                 QDIO_DBF_TEXT1(0,trace,dbf_text);
2227                 QDIO_DBF_TEXT1(0,setup,dbf_text);
2228                 ptr=&scsscf_area->response;
2229                 QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN);
2230         }
2231         QDIO_DBF_TEXT2(0,trace,"delytrgt");
2232         QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
2233         result = 0; /* not critical */
2234 out:
2235         free_page ((unsigned long) scsscf_area);
2236         return result;
2237 }
2238
2239 int
2240 qdio_cleanup(struct ccw_device *cdev, int how)
2241 {
2242         struct qdio_irq *irq_ptr;
2243         char dbf_text[15];
2244         int rc;
2245
2246         irq_ptr = cdev->private->qdio_data;
2247         if (!irq_ptr)
2248                 return -ENODEV;
2249
2250         sprintf(dbf_text,"qcln%4x",irq_ptr->irq);
2251         QDIO_DBF_TEXT1(0,trace,dbf_text);
2252         QDIO_DBF_TEXT0(0,setup,dbf_text);
2253
2254         rc = qdio_shutdown(cdev, how);
2255         if ((rc == 0) || (rc == -EINPROGRESS))
2256                 rc = qdio_free(cdev);
2257         return rc;
2258 }
2259
2260 int
2261 qdio_shutdown(struct ccw_device *cdev, int how)
2262 {
2263         struct qdio_irq *irq_ptr;
2264         int i;
2265         int result = 0;
2266         int rc;
2267         unsigned long flags;
2268         int timeout;
2269         char dbf_text[15];
2270
2271         irq_ptr = cdev->private->qdio_data;
2272         if (!irq_ptr)
2273                 return -ENODEV;
2274
2275         down(&irq_ptr->setting_up_sema);
2276
2277         sprintf(dbf_text,"qsqs%4x",irq_ptr->irq);
2278         QDIO_DBF_TEXT1(0,trace,dbf_text);
2279         QDIO_DBF_TEXT0(0,setup,dbf_text);
2280
2281         /* mark all qs as uninteresting */
2282         for (i=0;i<irq_ptr->no_input_qs;i++)
2283                 atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1);
2284
2285         for (i=0;i<irq_ptr->no_output_qs;i++)
2286                 atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1);
2287
2288         tasklet_kill(&tiqdio_tasklet);
2289
2290         for (i=0;i<irq_ptr->no_input_qs;i++) {
2291                 qdio_unmark_q(irq_ptr->input_qs[i]);
2292                 tasklet_kill(&irq_ptr->input_qs[i]->tasklet);
2293                 wait_event_interruptible_timeout(cdev->private->wait_q,
2294                                                  !atomic_read(&irq_ptr->
2295                                                               input_qs[i]->
2296                                                               use_count),
2297                                                  QDIO_NO_USE_COUNT_TIMEOUT);
2298                 if (atomic_read(&irq_ptr->input_qs[i]->use_count))
2299                         result=-EINPROGRESS;
2300         }
2301
2302         for (i=0;i<irq_ptr->no_output_qs;i++) {
2303                 tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
2304                 wait_event_interruptible_timeout(cdev->private->wait_q,
2305                                                  !atomic_read(&irq_ptr->
2306                                                               output_qs[i]->
2307                                                               use_count),
2308                                                  QDIO_NO_USE_COUNT_TIMEOUT);
2309                 if (atomic_read(&irq_ptr->output_qs[i]->use_count))
2310                         result=-EINPROGRESS;
2311         }
2312
2313         /* cleanup subchannel */
2314         spin_lock_irqsave(get_ccwdev_lock(cdev),flags);
2315         if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) {
2316                 rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
2317                 timeout=QDIO_CLEANUP_CLEAR_TIMEOUT;
2318         } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) {
2319                 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2320                 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2321         } else { /* default behaviour */
2322                 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2323                 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2324         }
2325         if (rc == -ENODEV) {
2326                 /* No need to wait for device no longer present. */
2327                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2328                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2329         } else if (((void *)cdev->handler != (void *)qdio_handler) && rc == 0) {
2330                 /*
2331                  * Whoever put another handler there, has to cope with the
2332                  * interrupt theirself. Might happen if qdio_shutdown was
2333                  * called on already shutdown queues, but this shouldn't have
2334                  * bad side effects.
2335                  */
2336                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2337                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2338         } else if (rc == 0) {
2339                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
2340                 ccw_device_set_timeout(cdev, timeout);
2341                 spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags);
2342
2343                 wait_event(cdev->private->wait_q,
2344                            irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
2345                            irq_ptr->state == QDIO_IRQ_STATE_ERR);
2346         } else {
2347                 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2348                                 "device %s\n", result, cdev->dev.bus_id);
2349                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2350                 result = rc;
2351                 goto out;
2352         }
2353         if (irq_ptr->is_thinint_irq) {
2354                 qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind);
2355                 tiqdio_set_subchannel_ind(irq_ptr,1); 
2356                 /* reset adapter interrupt indicators */
2357         }
2358
2359         /* exchange int handlers, if necessary */
2360         if ((void*)cdev->handler == (void*)qdio_handler)
2361                 cdev->handler=irq_ptr->original_int_handler;
2362
2363         /* Ignore errors. */
2364         qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2365         ccw_device_set_timeout(cdev, 0);
2366 out:
2367         up(&irq_ptr->setting_up_sema);
2368         return result;
2369 }
2370
2371 int
2372 qdio_free(struct ccw_device *cdev)
2373 {
2374         struct qdio_irq *irq_ptr;
2375         char dbf_text[15];
2376
2377         irq_ptr = cdev->private->qdio_data;
2378         if (!irq_ptr)
2379                 return -ENODEV;
2380
2381         down(&irq_ptr->setting_up_sema);
2382
2383         sprintf(dbf_text,"qfqs%4x",irq_ptr->irq);
2384         QDIO_DBF_TEXT1(0,trace,dbf_text);
2385         QDIO_DBF_TEXT0(0,setup,dbf_text);
2386
2387         cdev->private->qdio_data = 0;
2388
2389         up(&irq_ptr->setting_up_sema);
2390
2391         qdio_release_irq_memory(irq_ptr);
2392         module_put(THIS_MODULE);
2393         return 0;
2394 }
2395
2396 static inline void
2397 qdio_allocate_do_dbf(struct qdio_initialize *init_data)
2398 {
2399         char dbf_text[20]; /* if a printf printed out more than 8 chars */
2400
2401         sprintf(dbf_text,"qfmt:%x",init_data->q_format);
2402         QDIO_DBF_TEXT0(0,setup,dbf_text);
2403         QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8);
2404         sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format);
2405         QDIO_DBF_TEXT0(0,setup,dbf_text);
2406         QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*));
2407         QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*));
2408         QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*));
2409         sprintf(dbf_text,"miit%4x",init_data->min_input_threshold);
2410         QDIO_DBF_TEXT0(0,setup,dbf_text);
2411         sprintf(dbf_text,"mait%4x",init_data->max_input_threshold);
2412         QDIO_DBF_TEXT0(0,setup,dbf_text);
2413         sprintf(dbf_text,"miot%4x",init_data->min_output_threshold);
2414         QDIO_DBF_TEXT0(0,setup,dbf_text);
2415         sprintf(dbf_text,"maot%4x",init_data->max_output_threshold);
2416         QDIO_DBF_TEXT0(0,setup,dbf_text);
2417         sprintf(dbf_text,"niq:%4x",init_data->no_input_qs);
2418         QDIO_DBF_TEXT0(0,setup,dbf_text);
2419         sprintf(dbf_text,"noq:%4x",init_data->no_output_qs);
2420         QDIO_DBF_TEXT0(0,setup,dbf_text);
2421         QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*));
2422         QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*));
2423         QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long));
2424         QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long));
2425         QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*));
2426         QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*));
2427 }
2428
2429 static inline void
2430 qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt)
2431 {
2432         irq_ptr->input_qs[i]->is_iqdio_q = iqfmt;
2433         irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2434
2435         irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib);
2436
2437         irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl);
2438
2439         irq_ptr->qdr->qdf0[i].slsba=
2440                 (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]);
2441
2442         irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY;
2443         irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY;
2444         irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY;
2445         irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY;
2446 }
2447
2448 static inline void
2449 qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i,
2450                                int j, int iqfmt)
2451 {
2452         irq_ptr->output_qs[i]->is_iqdio_q = iqfmt;
2453         irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2454
2455         irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib);
2456
2457         irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl);
2458
2459         irq_ptr->qdr->qdf0[i+j].slsba=
2460                 (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]);
2461
2462         irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY;
2463         irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY;
2464         irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY;
2465         irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY;
2466 }
2467
2468
2469 static inline void
2470 qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr)
2471 {
2472         int i;
2473
2474         for (i=0;i<irq_ptr->no_input_qs;i++) {
2475                 irq_ptr->input_qs[i]->siga_sync=
2476                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2477                 irq_ptr->input_qs[i]->siga_in=
2478                         irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2479                 irq_ptr->input_qs[i]->siga_out=
2480                         irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2481                 irq_ptr->input_qs[i]->siga_sync_done_on_thinints=
2482                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2483                 irq_ptr->input_qs[i]->hydra_gives_outbound_pcis=
2484                         irq_ptr->hydra_gives_outbound_pcis;
2485                 irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis=
2486                         ((irq_ptr->qdioac&
2487                           (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2488                            CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2489                          (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2490                           CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2491
2492         }
2493 }
2494
2495 static inline void
2496 qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr)
2497 {
2498         int i;
2499
2500         for (i=0;i<irq_ptr->no_output_qs;i++) {
2501                 irq_ptr->output_qs[i]->siga_sync=
2502                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2503                 irq_ptr->output_qs[i]->siga_in=
2504                         irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2505                 irq_ptr->output_qs[i]->siga_out=
2506                         irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2507                 irq_ptr->output_qs[i]->siga_sync_done_on_thinints=
2508                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2509                 irq_ptr->output_qs[i]->hydra_gives_outbound_pcis=
2510                         irq_ptr->hydra_gives_outbound_pcis;
2511                 irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis=
2512                         ((irq_ptr->qdioac&
2513                           (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2514                            CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2515                          (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2516                           CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2517
2518         }
2519 }
2520
2521 static inline int
2522 qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat,
2523                                     int dstat)
2524 {
2525         char dbf_text[15];
2526         struct qdio_irq *irq_ptr;
2527
2528         irq_ptr = cdev->private->qdio_data;
2529
2530         if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) {
2531                 sprintf(dbf_text,"ick1%4x",irq_ptr->irq);
2532                 QDIO_DBF_TEXT2(1,trace,dbf_text);
2533                 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2534                 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2535                 QDIO_PRINT_ERR("received check condition on establish " \
2536                                "queues on irq 0x%x (cs=x%x, ds=x%x).\n",
2537                                irq_ptr->irq,cstat,dstat);
2538                 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR);
2539         }
2540         
2541         if (!(dstat & DEV_STAT_DEV_END)) {
2542                 QDIO_DBF_TEXT2(1,setup,"eq:no de");
2543                 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2544                 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2545                 QDIO_PRINT_ERR("establish queues on irq %04x: didn't get "
2546                                "device end: dstat=%02x, cstat=%02x\n",
2547                                irq_ptr->irq, dstat, cstat);
2548                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2549                 return 1;
2550         }
2551
2552         if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) {
2553                 QDIO_DBF_TEXT2(1,setup,"eq:badio");
2554                 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2555                 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2556                 QDIO_PRINT_ERR("establish queues on irq %04x: got "
2557                                "the following devstat: dstat=%02x, "
2558                                "cstat=%02x\n",
2559                                irq_ptr->irq, dstat, cstat);
2560                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2561                 return 1;
2562         }
2563         return 0;
2564 }
2565
2566 static void
2567 qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat)
2568 {
2569         struct qdio_irq *irq_ptr;
2570         char dbf_text[15];
2571
2572         irq_ptr = cdev->private->qdio_data;
2573
2574         sprintf(dbf_text,"qehi%4x",cdev->private->irq);
2575         QDIO_DBF_TEXT0(0,setup,dbf_text);
2576         QDIO_DBF_TEXT0(0,trace,dbf_text);
2577
2578         if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat)) {
2579                 ccw_device_set_timeout(cdev, 0);
2580                 return;
2581         }
2582
2583         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED);
2584         ccw_device_set_timeout(cdev, 0);
2585 }
2586
2587 int
2588 qdio_initialize(struct qdio_initialize *init_data)
2589 {
2590         int rc;
2591         char dbf_text[15];
2592
2593         sprintf(dbf_text,"qini%4x",init_data->cdev->private->irq);
2594         QDIO_DBF_TEXT0(0,setup,dbf_text);
2595         QDIO_DBF_TEXT0(0,trace,dbf_text);
2596
2597         rc = qdio_allocate(init_data);
2598         if (rc == 0) {
2599                 rc = qdio_establish(init_data);
2600                 if (rc != 0)
2601                         qdio_free(init_data->cdev);
2602         }
2603
2604         return rc;
2605 }
2606
2607
2608 int
2609 qdio_allocate(struct qdio_initialize *init_data)
2610 {
2611         struct qdio_irq *irq_ptr;
2612         char dbf_text[15];
2613
2614         sprintf(dbf_text,"qalc%4x",init_data->cdev->private->irq);
2615         QDIO_DBF_TEXT0(0,setup,dbf_text);
2616         QDIO_DBF_TEXT0(0,trace,dbf_text);
2617         if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2618              (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2619              ((init_data->no_input_qs) && (!init_data->input_handler)) ||
2620              ((init_data->no_output_qs) && (!init_data->output_handler)) )
2621                 return -EINVAL;
2622
2623         if (!init_data->input_sbal_addr_array)
2624                 return -EINVAL;
2625
2626         if (!init_data->output_sbal_addr_array)
2627                 return -EINVAL;
2628
2629         qdio_allocate_do_dbf(init_data);
2630
2631         /* create irq */
2632         irq_ptr=kmalloc(sizeof(struct qdio_irq), GFP_KERNEL | GFP_DMA);
2633
2634         QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
2635         QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
2636
2637         if (!irq_ptr) {
2638                 QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n");
2639                 return -ENOMEM;
2640         }
2641
2642         memset(irq_ptr,0,sizeof(struct qdio_irq));
2643
2644         init_MUTEX(&irq_ptr->setting_up_sema);
2645
2646         /* QDR must be in DMA area since CCW data address is only 32 bit */
2647         irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
2648         if (!(irq_ptr->qdr)) {
2649                 kfree(irq_ptr);
2650                 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
2651                 return -ENOMEM;
2652         }
2653         QDIO_DBF_TEXT0(0,setup,"qdr:");
2654         QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*));
2655
2656         if (qdio_alloc_qs(irq_ptr,
2657                           init_data->no_input_qs,
2658                           init_data->no_output_qs)) {
2659                 qdio_release_irq_memory(irq_ptr);
2660                 return -ENOMEM;
2661         }
2662
2663         init_data->cdev->private->qdio_data = irq_ptr;
2664
2665         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE);
2666
2667         return 0;
2668 }
2669
2670 int qdio_fill_irq(struct qdio_initialize *init_data)
2671 {
2672         int i;
2673         char dbf_text[15];
2674         struct ciw *ciw;
2675         int is_iqdio;
2676         struct qdio_irq *irq_ptr;
2677
2678         irq_ptr = init_data->cdev->private->qdio_data;
2679
2680         memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr));
2681
2682         /* wipes qib.ac, required by ar7063 */
2683         memset(irq_ptr->qdr,0,sizeof(struct qdr));
2684
2685         irq_ptr->int_parm=init_data->int_parm;
2686
2687         irq_ptr->irq = init_data->cdev->private->irq;
2688         irq_ptr->no_input_qs=init_data->no_input_qs;
2689         irq_ptr->no_output_qs=init_data->no_output_qs;
2690
2691         if (init_data->q_format==QDIO_IQDIO_QFMT) {
2692                 irq_ptr->is_iqdio_irq=1;
2693                 irq_ptr->is_thinint_irq=1;
2694         } else {
2695                 irq_ptr->is_iqdio_irq=0;
2696                 irq_ptr->is_thinint_irq=hydra_thinints;
2697         }
2698         sprintf(dbf_text,"is_i_t%1x%1x",
2699                 irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq);
2700         QDIO_DBF_TEXT2(0,setup,dbf_text);
2701
2702         if (irq_ptr->is_thinint_irq) {
2703                 irq_ptr->dev_st_chg_ind=qdio_get_indicator();
2704                 QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*));
2705                 if (!irq_ptr->dev_st_chg_ind) {
2706                         QDIO_PRINT_WARN("no indicator location available " \
2707                                         "for irq 0x%x\n",irq_ptr->irq);
2708                         qdio_release_irq_memory(irq_ptr);
2709                         return -ENOBUFS;
2710                 }
2711         }
2712
2713         /* defaults */
2714         irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD;
2715         irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT;
2716         irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD;
2717         irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT;
2718
2719         qdio_fill_qs(irq_ptr, init_data->cdev,
2720                      init_data->no_input_qs,
2721                      init_data->no_output_qs,
2722                      init_data->input_handler,
2723                      init_data->output_handler,init_data->int_parm,
2724                      init_data->q_format,init_data->flags,
2725                      init_data->input_sbal_addr_array,
2726                      init_data->output_sbal_addr_array);
2727
2728         if (!try_module_get(THIS_MODULE)) {
2729                 QDIO_PRINT_CRIT("try_module_get() failed!\n");
2730                 qdio_release_irq_memory(irq_ptr);
2731                 return -EINVAL;
2732         }
2733
2734         qdio_fill_thresholds(irq_ptr,init_data->no_input_qs,
2735                              init_data->no_output_qs,
2736                              init_data->min_input_threshold,
2737                              init_data->max_input_threshold,
2738                              init_data->min_output_threshold,
2739                              init_data->max_output_threshold);
2740
2741         /* fill in qdr */
2742         irq_ptr->qdr->qfmt=init_data->q_format;
2743         irq_ptr->qdr->iqdcnt=init_data->no_input_qs;
2744         irq_ptr->qdr->oqdcnt=init_data->no_output_qs;
2745         irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */
2746         irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4;
2747
2748         irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib;
2749         irq_ptr->qdr->qkey=QDIO_STORAGE_KEY;
2750
2751         /* fill in qib */
2752         irq_ptr->qib.qfmt=init_data->q_format;
2753         if (init_data->no_input_qs)
2754                 irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib);
2755         if (init_data->no_output_qs)
2756                 irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib);
2757         memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8);
2758
2759         qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format,
2760                              init_data->qib_param_field,
2761                              init_data->no_input_qs,
2762                              init_data->no_output_qs,
2763                              init_data->input_slib_elements,
2764                              init_data->output_slib_elements);
2765
2766         /* first input descriptors, then output descriptors */
2767         is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0;
2768         for (i=0;i<init_data->no_input_qs;i++)
2769                 qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio);
2770
2771         for (i=0;i<init_data->no_output_qs;i++)
2772                 qdio_allocate_fill_output_desc(irq_ptr, i,
2773                                                init_data->no_input_qs,
2774                                                is_iqdio);
2775
2776         /* qdr, qib, sls, slsbs, slibs, sbales filled. */
2777
2778         /* get qdio commands */
2779         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
2780         if (!ciw) {
2781                 QDIO_DBF_TEXT2(1,setup,"no eq");
2782                 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
2783                                 "Trying to use default.\n");
2784         } else
2785                 irq_ptr->equeue = *ciw;
2786         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
2787         if (!ciw) {
2788                 QDIO_DBF_TEXT2(1,setup,"no aq");
2789                 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
2790                                 "Trying to use default.\n");
2791         } else
2792                 irq_ptr->aqueue = *ciw;
2793
2794         /* Set new interrupt handler. */
2795         irq_ptr->original_int_handler = init_data->cdev->handler;
2796         init_data->cdev->handler = qdio_handler;
2797
2798         return 0;
2799 }
2800
2801 int
2802 qdio_establish(struct qdio_initialize *init_data)
2803 {
2804         struct qdio_irq *irq_ptr;
2805         unsigned long saveflags;
2806         int result, result2;
2807         struct ccw_device *cdev;
2808         char dbf_text[20];
2809
2810         cdev=init_data->cdev;
2811         irq_ptr = cdev->private->qdio_data;
2812         if (!irq_ptr)
2813                 return -EINVAL;
2814
2815         if (cdev->private->state != DEV_STATE_ONLINE)
2816                 return -EINVAL;
2817         
2818         down(&irq_ptr->setting_up_sema);
2819
2820         qdio_fill_irq(init_data);
2821
2822         /* the thinint CHSC stuff */
2823         if (irq_ptr->is_thinint_irq) {
2824
2825                 result = tiqdio_set_subchannel_ind(irq_ptr,0);
2826                 if (result) {
2827                         up(&irq_ptr->setting_up_sema);
2828                         qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2829                         return result;
2830                 }
2831                 tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET);
2832         }
2833
2834         sprintf(dbf_text,"qest%4x",cdev->private->irq);
2835         QDIO_DBF_TEXT0(0,setup,dbf_text);
2836         QDIO_DBF_TEXT0(0,trace,dbf_text);
2837
2838         /* establish q */
2839         irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd;
2840         irq_ptr->ccw.flags=CCW_FLAG_SLI;
2841         irq_ptr->ccw.count=irq_ptr->equeue.count;
2842         irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr);
2843
2844         spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
2845
2846         ccw_device_set_options(cdev, 0);
2847         result=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
2848                                         QDIO_DOING_ESTABLISH,0, 0,
2849                                         QDIO_ESTABLISH_TIMEOUT);
2850         if (result) {
2851                 result2=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
2852                                                  QDIO_DOING_ESTABLISH,0,0,
2853                                                  QDIO_ESTABLISH_TIMEOUT);
2854                 sprintf(dbf_text,"eq:io%4x",result);
2855                 QDIO_DBF_TEXT2(1,setup,dbf_text);
2856                 if (result2) {
2857                         sprintf(dbf_text,"eq:io%4x",result);
2858                         QDIO_DBF_TEXT2(1,setup,dbf_text);
2859                 }
2860                 QDIO_PRINT_WARN("establish queues on irq %04x: do_IO " \
2861                            "returned %i, next try returned %i\n",
2862                            irq_ptr->irq,result,result2);
2863                 result=result2;
2864                 if (result)
2865                         ccw_device_set_timeout(cdev, 0);
2866         }
2867
2868         spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
2869
2870         if (result) {
2871                 up(&irq_ptr->setting_up_sema);
2872                 qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR);
2873                 return result;
2874         }
2875         
2876         wait_event_interruptible_timeout(cdev->private->wait_q,
2877                  irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
2878                  irq_ptr->state == QDIO_IRQ_STATE_ERR,
2879                  QDIO_ESTABLISH_TIMEOUT);
2880
2881         if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED)
2882                 result = 0;
2883         else {
2884                 up(&irq_ptr->setting_up_sema);
2885                 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2886                 return -EIO;
2887         }
2888
2889         irq_ptr->qdioac=qdio_check_siga_needs(irq_ptr->irq);
2890         /* if this gets set once, we're running under VM and can omit SVSes */
2891         if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY)
2892                 omit_svs=1;
2893
2894         sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac);
2895         QDIO_DBF_TEXT2(0,setup,dbf_text);
2896
2897         sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac);
2898         QDIO_DBF_TEXT2(0,setup,dbf_text);
2899
2900         irq_ptr->hydra_gives_outbound_pcis=
2901                 irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED;
2902         irq_ptr->sync_done_on_outb_pcis=
2903                 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS;
2904
2905         qdio_initialize_set_siga_flags_input(irq_ptr);
2906         qdio_initialize_set_siga_flags_output(irq_ptr);
2907
2908         up(&irq_ptr->setting_up_sema);
2909
2910         return result;
2911         
2912 }
2913
2914 int
2915 qdio_activate(struct ccw_device *cdev, int flags)
2916 {
2917         struct qdio_irq *irq_ptr;
2918         int i,result=0,result2;
2919         unsigned long saveflags;
2920         char dbf_text[20]; /* see qdio_initialize */
2921
2922         irq_ptr = cdev->private->qdio_data;
2923         if (!irq_ptr)
2924                 return -ENODEV;
2925
2926         if (cdev->private->state != DEV_STATE_ONLINE)
2927                 return -EINVAL;
2928
2929         down(&irq_ptr->setting_up_sema);
2930         if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) {
2931                 result=-EBUSY;
2932                 goto out;
2933         }
2934
2935         sprintf(dbf_text,"qact%4x", irq_ptr->irq);
2936         QDIO_DBF_TEXT2(0,setup,dbf_text);
2937         QDIO_DBF_TEXT2(0,trace,dbf_text);
2938
2939         /* activate q */
2940         irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd;
2941         irq_ptr->ccw.flags=CCW_FLAG_SLI;
2942         irq_ptr->ccw.count=irq_ptr->aqueue.count;
2943         irq_ptr->ccw.cda=QDIO_GET_ADDR(0);
2944
2945         spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
2946
2947         ccw_device_set_timeout(cdev, 0);
2948         ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
2949         result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE,
2950                                 0, DOIO_DENY_PREFETCH);
2951         if (result) {
2952                 result2=ccw_device_start(cdev,&irq_ptr->ccw,
2953                                          QDIO_DOING_ACTIVATE,0,0);
2954                 sprintf(dbf_text,"aq:io%4x",result);
2955                 QDIO_DBF_TEXT2(1,setup,dbf_text);
2956                 if (result2) {
2957                         sprintf(dbf_text,"aq:io%4x",result);
2958                         QDIO_DBF_TEXT2(1,setup,dbf_text);
2959                 }
2960                 QDIO_PRINT_WARN("activate queues on irq %04x: do_IO " \
2961                            "returned %i, next try returned %i\n",
2962                            irq_ptr->irq,result,result2);
2963                 result=result2;
2964         }
2965
2966         spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
2967         if (result)
2968                 goto out;
2969
2970         for (i=0;i<irq_ptr->no_input_qs;i++) {
2971                 if (irq_ptr->is_thinint_irq) {
2972                         /* 
2973                          * that way we know, that, if we will get interrupted
2974                          * by tiqdio_inbound_processing, qdio_unmark_q will
2975                          * not be called 
2976                          */
2977                         qdio_reserve_q(irq_ptr->input_qs[i]);
2978                         qdio_mark_tiq(irq_ptr->input_qs[i]);
2979                         qdio_release_q(irq_ptr->input_qs[i]);
2980                 }
2981         }
2982
2983         if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) {
2984                 for (i=0;i<irq_ptr->no_input_qs;i++) {
2985                         irq_ptr->input_qs[i]->is_input_q|=
2986                                 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT;
2987                 }
2988         }
2989
2990         wait_event_interruptible_timeout(cdev->private->wait_q,
2991                                          ((irq_ptr->state ==
2992                                           QDIO_IRQ_STATE_STOPPED) ||
2993                                           (irq_ptr->state ==
2994                                            QDIO_IRQ_STATE_ERR)),
2995                                          QDIO_ACTIVATE_TIMEOUT);
2996
2997         switch (irq_ptr->state) {
2998         case QDIO_IRQ_STATE_STOPPED:
2999         case QDIO_IRQ_STATE_ERR:
3000                 up(&irq_ptr->setting_up_sema);
3001                 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3002                 down(&irq_ptr->setting_up_sema);
3003                 result = -EIO;
3004                 break;
3005         default:
3006                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
3007                 result = 0;
3008         }
3009  out:
3010         up(&irq_ptr->setting_up_sema);
3011
3012         return result;
3013 }
3014
3015 /* buffers filled forwards again to make Rick happy */
3016 static inline void
3017 qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx,
3018                         unsigned int count, struct qdio_buffer *buffers)
3019 {
3020         for (;;) {
3021                 set_slsb(&q->slsb.acc.val[qidx],SLSB_CU_INPUT_EMPTY);
3022                 count--;
3023                 if (!count) break;
3024                 qidx=(qidx+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
3025         }
3026
3027         /* not necessary, as the queues are synced during the SIGA read */
3028         /*SYNC_MEMORY;*/
3029 }
3030
3031 static inline void
3032 qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx,
3033                          unsigned int count, struct qdio_buffer *buffers)
3034 {
3035         for (;;) {
3036                 set_slsb(&q->slsb.acc.val[qidx],SLSB_CU_OUTPUT_PRIMED);
3037                 count--;
3038                 if (!count) break;
3039                 qidx=(qidx+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
3040         }
3041
3042         /* SIGA write will sync the queues */
3043         /*SYNC_MEMORY;*/
3044 }
3045
3046 static inline void
3047 do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags,
3048                        unsigned int qidx, unsigned int count,
3049                        struct qdio_buffer *buffers)
3050 {
3051         int used_elements;
3052
3053         /* This is the inbound handling of queues */
3054         used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3055         
3056         qdio_do_qdio_fill_input(q,qidx,count,buffers);
3057         
3058         if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&&
3059             (callflags&QDIO_FLAG_UNDER_INTERRUPT))
3060                 atomic_swap(&q->polling,0);
3061         
3062         if (used_elements) 
3063                 return;
3064         if (callflags&QDIO_FLAG_DONT_SIGA)
3065                 return;
3066         if (q->siga_in) {
3067                 int result;
3068                 
3069                 result=qdio_siga_input(q);
3070                 if (result) {
3071                         if (q->siga_error)
3072                                 q->error_status_flags|=
3073                                         QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
3074                         q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
3075                         q->siga_error=result;
3076                 }
3077         }
3078                 
3079         qdio_mark_q(q);
3080 }
3081
3082 static inline void
3083 do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
3084                         unsigned int qidx, unsigned int count,
3085                         struct qdio_buffer *buffers)
3086 {
3087         int used_elements;
3088
3089         /* This is the outbound handling of queues */
3090 #ifdef QDIO_PERFORMANCE_STATS
3091         perf_stats.start_time_outbound=NOW;
3092 #endif /* QDIO_PERFORMANCE_STATS */
3093
3094         qdio_do_qdio_fill_output(q,qidx,count,buffers);
3095
3096         used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3097
3098         if (callflags&QDIO_FLAG_DONT_SIGA) {
3099 #ifdef QDIO_PERFORMANCE_STATS
3100                 perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3101                 perf_stats.outbound_cnt++;
3102 #endif /* QDIO_PERFORMANCE_STATS */
3103                 return;
3104         }
3105         if (q->is_iqdio_q) {
3106                 /* one siga for every sbal */
3107                 while (count--)
3108                         qdio_kick_outbound_q(q);
3109                         
3110                 __qdio_outbound_processing(q);
3111         } else {
3112                 /* under VM, we do a SIGA sync unconditionally */
3113                 SYNC_MEMORY;
3114                 else {
3115                         /* 
3116                          * w/o shadow queues (else branch of
3117                          * SYNC_MEMORY :-/ ), we try to
3118                          * fast-requeue buffers 
3119                          */
3120                         if (q->slsb.acc.val[(qidx+QDIO_MAX_BUFFERS_PER_Q-1)
3121                                             &(QDIO_MAX_BUFFERS_PER_Q-1)]!=
3122                             SLSB_CU_OUTPUT_PRIMED) {
3123                                 qdio_kick_outbound_q(q);
3124                         } else {
3125                                 QDIO_DBF_TEXT3(0,trace, "fast-req");
3126 #ifdef QDIO_PERFORMANCE_STATS
3127                                 perf_stats.fast_reqs++;
3128 #endif /* QDIO_PERFORMANCE_STATS */
3129                         }
3130                 }
3131                 /* 
3132                  * only marking the q could take too long,
3133                  * the upper layer module could do a lot of
3134                  * traffic in that time 
3135                  */
3136                 __qdio_outbound_processing(q);
3137         }
3138
3139 #ifdef QDIO_PERFORMANCE_STATS
3140         perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3141         perf_stats.outbound_cnt++;
3142 #endif /* QDIO_PERFORMANCE_STATS */
3143 }
3144
3145 /* count must be 1 in iqdio */
3146 int
3147 do_QDIO(struct ccw_device *cdev,unsigned int callflags,
3148         unsigned int queue_number, unsigned int qidx,
3149         unsigned int count,struct qdio_buffer *buffers)
3150 {
3151         struct qdio_irq *irq_ptr;
3152 #ifdef CONFIG_QDIO_DEBUG
3153         char dbf_text[20];
3154
3155         sprintf(dbf_text,"doQD%04x",cdev->private->irq);
3156         QDIO_DBF_TEXT3(0,trace,dbf_text);
3157 #endif /* CONFIG_QDIO_DEBUG */
3158
3159         if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) ||
3160              (count>QDIO_MAX_BUFFERS_PER_Q) ||
3161              (queue_number>QDIO_MAX_QUEUES_PER_IRQ) )
3162                 return -EINVAL;
3163
3164         if (count==0)
3165                 return 0;
3166
3167         irq_ptr = cdev->private->qdio_data;
3168         if (!irq_ptr)
3169                 return -ENODEV;
3170
3171 #ifdef CONFIG_QDIO_DEBUG
3172         if (callflags&QDIO_FLAG_SYNC_INPUT)
3173                 QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number],
3174                               sizeof(void*));
3175         else
3176                 QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number],
3177                               sizeof(void*));
3178         sprintf(dbf_text,"flag%04x",callflags);
3179         QDIO_DBF_TEXT3(0,trace,dbf_text);
3180         sprintf(dbf_text,"qi%02xct%02x",qidx,count);
3181         QDIO_DBF_TEXT3(0,trace,dbf_text);
3182 #endif /* CONFIG_QDIO_DEBUG */
3183
3184         if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE)
3185                 return -EBUSY;
3186
3187         if (callflags&QDIO_FLAG_SYNC_INPUT)
3188                 do_qdio_handle_inbound(irq_ptr->input_qs[queue_number],
3189                                        callflags, qidx, count, buffers);
3190         else if (callflags&QDIO_FLAG_SYNC_OUTPUT)
3191                 do_qdio_handle_outbound(irq_ptr->output_qs[queue_number],
3192                                         callflags, qidx, count, buffers);
3193         else {
3194                 QDIO_DBF_TEXT3(1,trace,"doQD:inv");
3195                 return -EINVAL;
3196         }
3197         return 0;
3198 }
3199
3200 #ifdef QDIO_PERFORMANCE_STATS
3201 static int
3202 qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
3203                         int buffer_length, int *eof, void *data)
3204 {
3205         int c=0;
3206
3207         /* we are always called with buffer_length=4k, so we all
3208            deliver on the first read */
3209         if (offset>0)
3210                 return 0;
3211
3212 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3213         _OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc,i_p_c);
3214         _OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc,ii_p_c);
3215         _OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc,o_p_c);
3216         _OUTP_IT("Number of tasklet runs (total)                  : %u\n",
3217                  perf_stats.tl_runs);
3218         _OUTP_IT("\n");
3219         _OUTP_IT("Number of SIGA sync's issued                    : %u\n",
3220                  perf_stats.siga_syncs);
3221         _OUTP_IT("Number of SIGA in's issued                      : %u\n",
3222                  perf_stats.siga_ins);
3223         _OUTP_IT("Number of SIGA out's issued                     : %u\n",
3224                  perf_stats.siga_outs);
3225         _OUTP_IT("Number of PCIs caught                           : %u\n",
3226                  perf_stats.pcis);
3227         _OUTP_IT("Number of adapter interrupts caught             : %u\n",
3228                  perf_stats.thinints);
3229         _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA)  : %u\n",
3230                  perf_stats.fast_reqs);
3231         _OUTP_IT("\n");
3232         _OUTP_IT("Total time of all inbound actions (us) incl. UL : %u\n",
3233                  perf_stats.inbound_time);
3234         _OUTP_IT("Number of inbound transfers                     : %u\n",
3235                  perf_stats.inbound_cnt);
3236         _OUTP_IT("Total time of all outbound do_QDIOs (us)        : %u\n",
3237                  perf_stats.outbound_time);
3238         _OUTP_IT("Number of do_QDIOs outbound                     : %u\n",
3239                  perf_stats.outbound_cnt);
3240         _OUTP_IT("\n");
3241
3242         return c;
3243 }
3244
3245 static struct proc_dir_entry *qdio_perf_proc_file;
3246 #endif /* QDIO_PERFORMANCE_STATS */
3247
3248 static void
3249 qdio_add_procfs_entry(void)
3250 {
3251 #ifdef QDIO_PERFORMANCE_STATS
3252         proc_perf_file_registration=0;
3253         qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
3254                                               S_IFREG|0444,&proc_root);
3255         if (qdio_perf_proc_file) {
3256                 qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read;
3257         } else proc_perf_file_registration=-1;
3258
3259         if (proc_perf_file_registration)
3260                 QDIO_PRINT_WARN("was not able to register perf. " \
3261                                 "proc-file (%i).\n",
3262                                 proc_perf_file_registration);
3263 #endif /* QDIO_PERFORMANCE_STATS */
3264 }
3265
3266 static void
3267 qdio_remove_procfs_entry(void)
3268 {
3269 #ifdef QDIO_PERFORMANCE_STATS
3270         perf_stats.tl_runs=0;
3271
3272         if (!proc_perf_file_registration) /* means if it went ok earlier */
3273                 remove_proc_entry(QDIO_PERF,&proc_root);
3274 #endif /* QDIO_PERFORMANCE_STATS */
3275 }
3276
3277 static void
3278 tiqdio_register_thinints(void)
3279 {
3280         char dbf_text[20];
3281         register_thinint_result=
3282                 s390_register_adapter_interrupt(&tiqdio_thinint_handler);
3283         if (register_thinint_result) {
3284                 sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff));
3285                 QDIO_DBF_TEXT0(0,setup,dbf_text);
3286                 QDIO_PRINT_ERR("failed to register adapter handler " \
3287                                "(rc=%i).\nAdapter interrupts might " \
3288                                "not work. Continuing.\n",
3289                                register_thinint_result);
3290         }
3291 }
3292
3293 static void
3294 tiqdio_unregister_thinints(void)
3295 {
3296         if (!register_thinint_result)
3297                 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler);
3298 }
3299
3300 static int
3301 qdio_get_qdio_memory(void)
3302 {
3303         int i;
3304         indicator_used[0]=1;
3305
3306         for (i=1;i<INDICATORS_PER_CACHELINE;i++)
3307                 indicator_used[i]=0;
3308         indicators=(__u32*)kmalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
3309                                    GFP_KERNEL);
3310         if (!indicators) return -ENOMEM;
3311         memset(indicators,0,sizeof(__u32)*(INDICATORS_PER_CACHELINE));
3312         return 0;
3313 }
3314
3315 static void
3316 qdio_release_qdio_memory(void)
3317 {
3318         if (indicators)
3319                 kfree(indicators);
3320 }
3321
3322 static void
3323 qdio_unregister_dbf_views(void)
3324 {
3325         if (qdio_dbf_setup)
3326                 debug_unregister(qdio_dbf_setup);
3327         if (qdio_dbf_sbal)
3328                 debug_unregister(qdio_dbf_sbal);
3329         if (qdio_dbf_sense)
3330                 debug_unregister(qdio_dbf_sense);
3331         if (qdio_dbf_trace)
3332                 debug_unregister(qdio_dbf_trace);
3333 #ifdef CONFIG_QDIO_DEBUG
3334         if (qdio_dbf_slsb_out)
3335                 debug_unregister(qdio_dbf_slsb_out);
3336         if (qdio_dbf_slsb_in)
3337                 debug_unregister(qdio_dbf_slsb_in);
3338 #endif /* CONFIG_QDIO_DEBUG */
3339 }
3340
3341 static int
3342 qdio_register_dbf_views(void)
3343 {
3344         qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
3345                                       QDIO_DBF_SETUP_PAGES,
3346                                       QDIO_DBF_SETUP_NR_AREAS,
3347                                       QDIO_DBF_SETUP_LEN);
3348         if (!qdio_dbf_setup)
3349                 goto oom;
3350         debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view);
3351         debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
3352
3353         qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
3354                                      QDIO_DBF_SBAL_PAGES,
3355                                      QDIO_DBF_SBAL_NR_AREAS,
3356                                      QDIO_DBF_SBAL_LEN);
3357         if (!qdio_dbf_sbal)
3358                 goto oom;
3359
3360         debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view);
3361         debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
3362
3363         qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
3364                                       QDIO_DBF_SENSE_PAGES,
3365                                       QDIO_DBF_SENSE_NR_AREAS,
3366                                       QDIO_DBF_SENSE_LEN);
3367         if (!qdio_dbf_sense)
3368                 goto oom;
3369
3370         debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view);
3371         debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
3372
3373         qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
3374                                       QDIO_DBF_TRACE_PAGES,
3375                                       QDIO_DBF_TRACE_NR_AREAS,
3376                                       QDIO_DBF_TRACE_LEN);
3377         if (!qdio_dbf_trace)
3378                 goto oom;
3379
3380         debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view);
3381         debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL);
3382
3383 #ifdef CONFIG_QDIO_DEBUG
3384         qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
3385                                          QDIO_DBF_SLSB_OUT_PAGES,
3386                                          QDIO_DBF_SLSB_OUT_NR_AREAS,
3387                                          QDIO_DBF_SLSB_OUT_LEN);
3388         if (!qdio_dbf_slsb_out)
3389                 goto oom;
3390         debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view);
3391         debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
3392
3393         qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
3394                                         QDIO_DBF_SLSB_IN_PAGES,
3395                                         QDIO_DBF_SLSB_IN_NR_AREAS,
3396                                         QDIO_DBF_SLSB_IN_LEN);
3397         if (!qdio_dbf_slsb_in)
3398                 goto oom;
3399         debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view);
3400         debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL);
3401 #endif /* CONFIG_QDIO_DEBUG */
3402         return 0;
3403 oom:
3404         QDIO_PRINT_ERR("not enough memory for dbf.\n");
3405         qdio_unregister_dbf_views();
3406         return -ENOMEM;
3407 }
3408
3409 static int __init
3410 init_QDIO(void)
3411 {
3412         int res;
3413 #ifdef QDIO_PERFORMANCE_STATS
3414         void *ptr;
3415 #endif /* QDIO_PERFORMANCE_STATS */
3416
3417         printk("qdio: loading %s\n",version);
3418
3419         res=qdio_get_qdio_memory();
3420         if (res)
3421                 return res;
3422
3423         res = qdio_register_dbf_views();
3424         if (res)
3425                 return res;
3426
3427         QDIO_DBF_TEXT0(0,setup,"initQDIO");
3428
3429 #ifdef QDIO_PERFORMANCE_STATS
3430         memset((void*)&perf_stats,0,sizeof(perf_stats));
3431         QDIO_DBF_TEXT0(0,setup,"perfstat");
3432         ptr=&perf_stats;
3433         QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
3434 #endif /* QDIO_PERFORMANCE_STATS */
3435
3436         qdio_add_procfs_entry();
3437
3438         if (tiqdio_check_chsc_availability())
3439                 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3440
3441         tiqdio_register_thinints();
3442
3443         return 0;
3444  }
3445
3446 static void __exit
3447 cleanup_QDIO(void)
3448 {
3449         tiqdio_unregister_thinints();
3450         qdio_remove_procfs_entry();
3451         qdio_release_qdio_memory();
3452         qdio_unregister_dbf_views();
3453
3454         printk("qdio: %s: module removed\n",version);
3455 }
3456
3457 module_init(init_QDIO);
3458 module_exit(cleanup_QDIO);
3459
3460 EXPORT_SYMBOL(qdio_allocate);
3461 EXPORT_SYMBOL(qdio_establish);
3462 EXPORT_SYMBOL(qdio_initialize);
3463 EXPORT_SYMBOL(qdio_activate);
3464 EXPORT_SYMBOL(do_QDIO);
3465 EXPORT_SYMBOL(qdio_shutdown);
3466 EXPORT_SYMBOL(qdio_free);
3467 EXPORT_SYMBOL(qdio_cleanup);
3468 EXPORT_SYMBOL(qdio_synchronize);