3 * linux/drivers/s390/cio/qdio.c
5 * Linux for S/390 QDIO base support, Hipersocket base support
8 * Copyright 2000,2002 IBM Corporation
9 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
10 * 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
12 * Restriction: only 63 iqdio subchannels would have its own indicator,
13 * after that, subsequent subchannels share one indicator
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)
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.
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.
33 #include <linux/module.h>
34 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/kernel.h>
38 #include <linux/proc_fs.h>
39 #include <linux/timer.h>
40 #include <linux/mempool.h>
42 #include <asm/ccwdev.h>
44 #include <asm/atomic.h>
45 #include <asm/semaphore.h>
46 #include <asm/timex.h>
48 #include <asm/debug.h>
49 #include <asm/s390_rdev.h>
60 /****************** MODULE PARAMETER VARIABLES ********************/
61 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
62 MODULE_DESCRIPTION("QDIO base support version 2, " \
63 "Copyright 2000 IBM Corporation");
64 MODULE_LICENSE("GPL");
66 /******************** HERE WE GO ***********************************/
68 static const char version[] = "QDIO base support version 2";
70 static int qdio_performance_stats = 0;
71 static int proc_perf_file_registration;
72 static struct qdio_perf_stats perf_stats;
74 static int hydra_thinints;
75 static int is_passthrough = 0;
78 static int indicator_used[INDICATORS_PER_CACHELINE];
79 static __u32 * volatile indicators;
80 static __u32 volatile spare_indicator;
81 static atomic_t spare_indicator_usecount;
82 #define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
83 static mempool_t *qdio_mempool_scssc;
84 static struct kmem_cache *qdio_q_cache;
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 */
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);
103 /* not a macro, as one of the arguments is atomic_read */
105 qdio_min(int a,int b)
113 /***************** SCRUBBER HELPER ROUTINES **********************/
115 static inline void qdio_perf_stat_inc(atomic64_t *count)
117 if (qdio_performance_stats)
121 static inline void qdio_perf_stat_dec(atomic64_t *count)
123 if (qdio_performance_stats)
126 #else /* CONFIG_64BIT */
127 static inline void qdio_perf_stat_inc(atomic_t *count)
129 if (qdio_performance_stats)
133 static inline void qdio_perf_stat_dec(atomic_t *count)
135 if (qdio_performance_stats)
138 #endif /* CONFIG_64BIT */
141 qdio_get_micros(void)
143 return (get_clock() >> 12); /* time>>12 is microseconds */
147 * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
148 * the q in any case, so that we'll not be interrupted when we are in
149 * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
150 * ever works (last famous words)
153 qdio_reserve_q(struct qdio_q *q)
155 return atomic_add_return(1,&q->use_count) - 1;
159 qdio_release_q(struct qdio_q *q)
161 atomic_dec(&q->use_count);
166 qdio_check_ccq(struct qdio_q *q, unsigned int ccq)
170 if (ccq == 0 || ccq == 32)
172 if (ccq == 96 || ccq == 97)
174 /*notify devices immediately*/
175 sprintf(dbf_text,"%d", ccq);
176 QDIO_DBF_TEXT2(1,trace,dbf_text);
179 /* EQBS: extract buffer states */
181 qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
182 unsigned int *start, unsigned int *cnt)
184 struct qdio_irq *irq;
185 unsigned int tmp_cnt, q_no, ccq;
191 irq = (struct qdio_irq*)q->irq_ptr;
194 q_no += irq->no_input_qs;
196 ccq = do_eqbs(irq->sch_token, state, q_no, start, cnt);
197 rc = qdio_check_ccq(q, ccq);
198 if ((ccq == 96) && (tmp_cnt != *cnt))
201 QDIO_DBF_TEXT5(1,trace,"eqAGAIN");
205 QDIO_DBF_TEXT2(1,trace,"eqberr");
206 sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt, *cnt, ccq, q_no);
207 QDIO_DBF_TEXT2(1,trace,dbf_text);
208 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
209 QDIO_STATUS_LOOK_FOR_ERROR,
210 0, 0, 0, -1, -1, q->int_parm);
213 return (tmp_cnt - *cnt);
216 /* SQBS: set buffer states */
218 qdio_do_sqbs(struct qdio_q *q, unsigned char state,
219 unsigned int *start, unsigned int *cnt)
221 struct qdio_irq *irq;
222 unsigned int tmp_cnt, q_no, ccq;
228 irq = (struct qdio_irq*)q->irq_ptr;
231 q_no += irq->no_input_qs;
233 ccq = do_sqbs(irq->sch_token, state, q_no, start, cnt);
234 rc = qdio_check_ccq(q, ccq);
236 QDIO_DBF_TEXT5(1,trace,"sqAGAIN");
240 QDIO_DBF_TEXT3(1,trace,"sqberr");
241 sprintf(dbf_text,"%2x,%2x",tmp_cnt,*cnt);
242 QDIO_DBF_TEXT3(1,trace,dbf_text);
243 sprintf(dbf_text,"%d,%d",ccq,q_no);
244 QDIO_DBF_TEXT3(1,trace,dbf_text);
245 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
246 QDIO_STATUS_LOOK_FOR_ERROR,
247 0, 0, 0, -1, -1, q->int_parm);
250 return (tmp_cnt - *cnt);
254 qdio_set_slsb(struct qdio_q *q, unsigned int *bufno,
255 unsigned char state, unsigned int *count)
258 struct qdio_irq *irq;
260 irq = (struct qdio_irq*)q->irq_ptr;
261 if (!irq->is_qebsm) {
262 slsb = (char *)&q->slsb.acc.val[(*bufno)];
266 return qdio_do_sqbs(q, state, bufno, count);
269 #ifdef CONFIG_QDIO_DEBUG
271 qdio_trace_slsb(struct qdio_q *q)
273 if (q->queue_type==QDIO_TRACE_QTYPE) {
275 QDIO_DBF_HEX2(0,slsb_in,&q->slsb,
276 QDIO_MAX_BUFFERS_PER_Q);
278 QDIO_DBF_HEX2(0,slsb_out,&q->slsb,
279 QDIO_MAX_BUFFERS_PER_Q);
285 set_slsb(struct qdio_q *q, unsigned int *bufno,
286 unsigned char state, unsigned int *count)
289 #ifdef CONFIG_QDIO_DEBUG
292 rc = qdio_set_slsb(q, bufno, state, count);
293 #ifdef CONFIG_QDIO_DEBUG
299 qdio_siga_sync(struct qdio_q *q, unsigned int gpr2,
304 QDIO_DBF_TEXT4(0,trace,"sigasync");
305 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
307 qdio_perf_stat_inc(&perf_stats.siga_syncs);
309 cc = do_siga_sync(q->schid, gpr2, gpr3);
311 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
317 qdio_siga_sync_q(struct qdio_q *q)
320 return qdio_siga_sync(q, 0, q->mask);
321 return qdio_siga_sync(q, q->mask, 0);
325 __do_siga_output(struct qdio_q *q, unsigned int *busy_bit)
327 struct qdio_irq *irq;
331 irq = (struct qdio_irq *) q->irq_ptr;
333 schid = *((u32 *)&q->schid);
335 schid = irq->sch_token;
338 return do_siga_output(schid, q->mask, busy_bit, fc);
342 * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
343 * an access exception
346 qdio_siga_output(struct qdio_q *q)
352 qdio_perf_stat_inc(&perf_stats.siga_outs);
354 QDIO_DBF_TEXT4(0,trace,"sigaout");
355 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
358 cc = __do_siga_output(q, &busy_bit);
359 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
360 if ((cc==2) && (busy_bit) && (q->is_iqdio_q)) {
363 if ((NOW-start_time)>QDIO_BUSY_BIT_PATIENCE)
369 if ((cc==2) && (busy_bit))
370 cc |= QDIO_SIGA_ERROR_B_BIT_SET;
373 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
379 qdio_siga_input(struct qdio_q *q)
383 QDIO_DBF_TEXT4(0,trace,"sigain");
384 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
386 qdio_perf_stat_inc(&perf_stats.siga_ins);
388 cc = do_siga_input(q->schid, q->mask);
391 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
396 /* locked by the locks in qdio_activate and qdio_cleanup */
398 qdio_get_indicator(void)
402 for (i=1;i<INDICATORS_PER_CACHELINE;i++)
403 if (!indicator_used[i]) {
407 atomic_inc(&spare_indicator_usecount);
408 return (__u32 * volatile) &spare_indicator;
411 /* locked by the locks in qdio_activate and qdio_cleanup */
413 qdio_put_indicator(__u32 *addr)
417 if ( (addr) && (addr!=&spare_indicator) ) {
421 if (addr == &spare_indicator)
422 atomic_dec(&spare_indicator_usecount);
426 tiqdio_clear_summary_bit(__u32 *location)
428 QDIO_DBF_TEXT5(0,trace,"clrsummb");
429 QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
435 tiqdio_set_summary_bit(__u32 *location)
437 QDIO_DBF_TEXT5(0,trace,"setsummb");
438 QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
444 tiqdio_sched_tl(void)
446 tasklet_hi_schedule(&tiqdio_tasklet);
450 qdio_mark_tiq(struct qdio_q *q)
454 QDIO_DBF_TEXT4(0,trace,"mark iq");
455 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
457 spin_lock_irqsave(&ttiq_list_lock,flags);
458 if (unlikely(atomic_read(&q->is_in_shutdown)))
464 if ((q->list_prev) || (q->list_next))
472 q->list_next=tiq_list;
473 q->list_prev=tiq_list->list_prev;
474 tiq_list->list_prev->list_next=q;
475 tiq_list->list_prev=q;
477 spin_unlock_irqrestore(&ttiq_list_lock,flags);
479 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
483 spin_unlock_irqrestore(&ttiq_list_lock,flags);
488 qdio_mark_q(struct qdio_q *q)
490 QDIO_DBF_TEXT4(0,trace,"mark q");
491 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
493 if (unlikely(atomic_read(&q->is_in_shutdown)))
496 tasklet_schedule(&q->tasklet);
500 qdio_stop_polling(struct qdio_q *q)
502 #ifdef QDIO_USE_PROCESSING_STATE
503 unsigned int tmp, gsf, count = 1;
504 unsigned char state = 0;
505 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
507 if (!atomic_xchg(&q->polling,0))
510 QDIO_DBF_TEXT4(0,trace,"stoppoll");
511 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
513 /* show the card that we are not polling anymore */
517 tmp = gsf = GET_SAVED_FRONTIER(q);
518 tmp = ((tmp + QDIO_MAX_BUFFERS_PER_Q-1) & (QDIO_MAX_BUFFERS_PER_Q-1) );
519 set_slsb(q, &tmp, SLSB_P_INPUT_NOT_INIT, &count);
522 * we don't issue this SYNC_MEMORY, as we trust Rick T and
523 * moreover will not use the PROCESSING state under VM, so
524 * q->polling was 0 anyway
529 qdio_do_eqbs(q, &state, &gsf, &count);
531 state = q->slsb.acc.val[gsf];
532 if (state != SLSB_P_INPUT_PRIMED)
535 * set our summary bit again, as otherwise there is a
536 * small window we can miss between resetting it and
537 * checking for PRIMED state
540 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
543 #else /* QDIO_USE_PROCESSING_STATE */
545 #endif /* QDIO_USE_PROCESSING_STATE */
549 * see the comment in do_QDIO and before qdio_reserve_q about the
550 * sophisticated locking outside of unmark_q, so that we don't need to
551 * disable the interrupts :-)
554 qdio_unmark_q(struct qdio_q *q)
558 QDIO_DBF_TEXT4(0,trace,"unmark q");
559 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
561 if ((!q->list_prev)||(!q->list_next))
564 if ((q->is_thinint_q)&&(q->is_input_q)) {
566 spin_lock_irqsave(&ttiq_list_lock,flags);
567 /* in case cleanup has done this already and simultanously
568 * qdio_unmark_q is called from the interrupt handler, we've
569 * got to check this in this specific case again */
570 if ((!q->list_prev)||(!q->list_next))
572 if (q->list_next==q) {
573 /* q was the only interesting q */
578 q->list_next->list_prev=q->list_prev;
579 q->list_prev->list_next=q->list_next;
580 tiq_list=q->list_next;
585 spin_unlock_irqrestore(&ttiq_list_lock,flags);
589 static inline unsigned long
590 tiqdio_clear_global_summary(void)
594 QDIO_DBF_TEXT5(0,trace,"clrglobl");
596 time = do_clear_global_summary();
598 QDIO_DBF_HEX5(0,trace,&time,sizeof(unsigned long));
604 /************************* OUTBOUND ROUTINES *******************************/
606 qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q *q)
608 struct qdio_irq *irq;
610 unsigned int cnt, count, ftc;
612 irq = (struct qdio_irq *) q->irq_ptr;
613 if ((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis))
616 ftc = q->first_to_check;
617 count = qdio_min(atomic_read(&q->number_of_buffers_used),
618 (QDIO_MAX_BUFFERS_PER_Q-1));
620 return q->first_to_check;
621 cnt = qdio_do_eqbs(q, &state, &ftc, &count);
623 return q->first_to_check;
625 case SLSB_P_OUTPUT_ERROR:
626 QDIO_DBF_TEXT3(0,trace,"outperr");
627 atomic_sub(cnt , &q->number_of_buffers_used);
629 q->error_status_flags |=
630 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
631 q->qdio_error = SLSB_P_OUTPUT_ERROR;
632 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
633 q->first_to_check = ftc;
635 case SLSB_P_OUTPUT_EMPTY:
636 QDIO_DBF_TEXT5(0,trace,"outpempt");
637 atomic_sub(cnt, &q->number_of_buffers_used);
638 q->first_to_check = ftc;
640 case SLSB_CU_OUTPUT_PRIMED:
641 /* all buffers primed */
642 QDIO_DBF_TEXT5(0,trace,"outpprim");
647 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
648 return q->first_to_check;
652 qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q *q)
654 struct qdio_irq *irq;
656 int tmp, ftc, count, cnt;
660 irq = (struct qdio_irq *) q->irq_ptr;
661 ftc = q->first_to_check;
662 count = qdio_min(atomic_read(&q->number_of_buffers_used),
663 (QDIO_MAX_BUFFERS_PER_Q-1));
665 return q->first_to_check;
666 cnt = qdio_do_eqbs(q, &state, &ftc, &count);
668 return q->first_to_check;
670 case SLSB_P_INPUT_ERROR :
671 #ifdef CONFIG_QDIO_DEBUG
672 QDIO_DBF_TEXT3(1,trace,"inperr");
673 sprintf(dbf_text,"%2x,%2x",ftc,count);
674 QDIO_DBF_TEXT3(1,trace,dbf_text);
675 #endif /* CONFIG_QDIO_DEBUG */
677 q->error_status_flags |=
678 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
679 q->qdio_error = SLSB_P_INPUT_ERROR;
680 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
681 atomic_sub(cnt, &q->number_of_buffers_used);
682 q->first_to_check = ftc;
684 case SLSB_P_INPUT_PRIMED :
685 QDIO_DBF_TEXT3(0,trace,"inptprim");
686 sprintf(dbf_text,"%2x,%2x",ftc,count);
687 QDIO_DBF_TEXT3(1,trace,dbf_text);
689 ftc = q->first_to_check;
690 #ifdef QDIO_USE_PROCESSING_STATE
693 tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
698 tmp += set_slsb(q, &ftc,
699 SLSB_P_INPUT_PROCESSING, &cnt);
700 atomic_set(&q->polling, 1);
702 tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
704 atomic_sub(tmp, &q->number_of_buffers_used);
705 q->first_to_check = ftc;
707 case SLSB_CU_INPUT_EMPTY:
708 case SLSB_P_INPUT_NOT_INIT:
709 case SLSB_P_INPUT_PROCESSING:
710 QDIO_DBF_TEXT5(0,trace,"inpnipro");
715 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
716 return q->first_to_check;
720 qdio_get_outbound_buffer_frontier(struct qdio_q *q)
722 struct qdio_irq *irq;
724 unsigned int count = 1;
725 int first_not_to_check, f, f_mod_no;
728 QDIO_DBF_TEXT4(0,trace,"getobfro");
729 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
731 irq = (struct qdio_irq *) q->irq_ptr;
733 return qdio_qebsm_get_outbound_buffer_frontier(q);
735 slsb=&q->slsb.acc.val[0];
736 f_mod_no=f=q->first_to_check;
738 * f points to already processed elements, so f+no_used is correct...
739 * ... but: we don't check 128 buffers, as otherwise
740 * qdio_has_outbound_q_moved would return 0
742 first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
743 (QDIO_MAX_BUFFERS_PER_Q-1));
745 if ((!q->is_iqdio_q)&&(!q->hydra_gives_outbound_pcis))
749 if (f==first_not_to_check)
752 switch(slsb[f_mod_no]) {
754 /* the adapter has not fetched the output yet */
755 case SLSB_CU_OUTPUT_PRIMED:
756 QDIO_DBF_TEXT5(0,trace,"outpprim");
759 /* the adapter got it */
760 case SLSB_P_OUTPUT_EMPTY:
761 atomic_dec(&q->number_of_buffers_used);
763 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
764 QDIO_DBF_TEXT5(0,trace,"outpempt");
767 case SLSB_P_OUTPUT_ERROR:
768 QDIO_DBF_TEXT3(0,trace,"outperr");
769 sprintf(dbf_text,"%x-%x-%x",f_mod_no,
770 q->sbal[f_mod_no]->element[14].sbalf.value,
771 q->sbal[f_mod_no]->element[15].sbalf.value);
772 QDIO_DBF_TEXT3(1,trace,dbf_text);
773 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
775 /* kind of process the buffer */
776 set_slsb(q, &f_mod_no, SLSB_P_OUTPUT_NOT_INIT, &count);
779 * we increment the frontier, as this buffer
780 * was processed obviously
782 atomic_dec(&q->number_of_buffers_used);
783 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
786 q->error_status_flags|=
787 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
788 q->qdio_error=SLSB_P_OUTPUT_ERROR;
789 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
795 QDIO_DBF_TEXT5(0,trace,"outpni");
798 return (q->first_to_check=f_mod_no);
801 /* all buffers are processed */
803 qdio_is_outbound_q_done(struct qdio_q *q)
806 #ifdef CONFIG_QDIO_DEBUG
810 no_used=atomic_read(&q->number_of_buffers_used);
812 #ifdef CONFIG_QDIO_DEBUG
814 sprintf(dbf_text,"oqisnt%02x",no_used);
815 QDIO_DBF_TEXT4(0,trace,dbf_text);
817 QDIO_DBF_TEXT4(0,trace,"oqisdone");
819 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
820 #endif /* CONFIG_QDIO_DEBUG */
825 qdio_has_outbound_q_moved(struct qdio_q *q)
829 i=qdio_get_outbound_buffer_frontier(q);
831 if ( (i!=GET_SAVED_FRONTIER(q)) ||
832 (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
834 QDIO_DBF_TEXT4(0,trace,"oqhasmvd");
835 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
838 QDIO_DBF_TEXT4(0,trace,"oqhsntmv");
839 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
845 qdio_kick_outbound_q(struct qdio_q *q)
848 #ifdef CONFIG_QDIO_DEBUG
851 QDIO_DBF_TEXT4(0,trace,"kickoutq");
852 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
853 #endif /* CONFIG_QDIO_DEBUG */
858 /* here's the story with cc=2 and busy bit set (thanks, Rick):
859 * VM's CP could present us cc=2 and busy bit set on SIGA-write
860 * during reconfiguration of their Guest LAN (only in HIPERS mode,
861 * QDIO mode is asynchronous -- cc=2 and busy bit there will take
862 * the queues down immediately; and not being under VM we have a
863 * problem on cc=2 and busy bit set right away).
865 * Therefore qdio_siga_output will try for a short time constantly,
866 * if such a condition occurs. If it doesn't change, it will
867 * increase the busy_siga_counter and save the timestamp, and
868 * schedule the queue for later processing (via mark_q, using the
869 * queue tasklet). __qdio_outbound_processing will check out the
870 * counter. If non-zero, it will call qdio_kick_outbound_q as often
871 * as the value of the counter. This will attempt further SIGA
872 * instructions. For each successful SIGA, the counter is
873 * decreased, for failing SIGAs the counter remains the same, after
875 * After some time of no movement, qdio_kick_outbound_q will
876 * finally fail and reflect corresponding error codes to call
877 * the upper layer module and have it take the queues down.
879 * Note that this is a change from the original HiperSockets design
880 * (saying cc=2 and busy bit means take the queues down), but in
881 * these days Guest LAN didn't exist... excessive cc=2 with busy bit
882 * conditions will still take the queues down, but the threshold is
883 * higher due to the Guest LAN environment.
887 result=qdio_siga_output(q);
891 /* went smooth this time, reset timestamp */
892 #ifdef CONFIG_QDIO_DEBUG
893 QDIO_DBF_TEXT3(0,trace,"cc2reslv");
894 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
895 atomic_read(&q->busy_siga_counter));
896 QDIO_DBF_TEXT3(0,trace,dbf_text);
897 #endif /* CONFIG_QDIO_DEBUG */
898 q->timing.busy_start=0;
900 case (2|QDIO_SIGA_ERROR_B_BIT_SET):
901 /* cc=2 and busy bit: */
902 atomic_inc(&q->busy_siga_counter);
904 /* if the last siga was successful, save
906 if (!q->timing.busy_start)
907 q->timing.busy_start=NOW;
909 /* if we're in time, don't touch error_status_flags
911 if (NOW-q->timing.busy_start<QDIO_BUSY_BIT_GIVE_UP) {
915 QDIO_DBF_TEXT2(0,trace,"cc2REPRT");
916 #ifdef CONFIG_QDIO_DEBUG
917 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
918 atomic_read(&q->busy_siga_counter));
919 QDIO_DBF_TEXT3(0,trace,dbf_text);
920 #endif /* CONFIG_QDIO_DEBUG */
921 /* else fallthrough and report error */
923 /* for plain cc=1, 2 or 3: */
925 q->error_status_flags|=
926 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
927 q->error_status_flags|=
928 QDIO_STATUS_LOOK_FOR_ERROR;
929 q->siga_error=result;
934 qdio_kick_outbound_handler(struct qdio_q *q)
936 int start, end, real_end, count;
937 #ifdef CONFIG_QDIO_DEBUG
941 start = q->first_element_to_kick;
942 /* last_move_ftc was just updated */
943 real_end = GET_SAVED_FRONTIER(q);
944 end = (real_end+QDIO_MAX_BUFFERS_PER_Q-1)&
945 (QDIO_MAX_BUFFERS_PER_Q-1);
946 count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)&
947 (QDIO_MAX_BUFFERS_PER_Q-1);
949 #ifdef CONFIG_QDIO_DEBUG
950 QDIO_DBF_TEXT4(0,trace,"kickouth");
951 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
953 sprintf(dbf_text,"s=%2xc=%2x",start,count);
954 QDIO_DBF_TEXT4(0,trace,dbf_text);
955 #endif /* CONFIG_QDIO_DEBUG */
957 if (q->state==QDIO_IRQ_STATE_ACTIVE)
958 q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT|
959 q->error_status_flags,
960 q->qdio_error,q->siga_error,q->q_no,start,count,
963 /* for the next time: */
964 q->first_element_to_kick=real_end;
967 q->error_status_flags=0;
971 __qdio_outbound_processing(struct qdio_q *q)
975 QDIO_DBF_TEXT4(0,trace,"qoutproc");
976 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
978 if (unlikely(qdio_reserve_q(q))) {
980 qdio_perf_stat_inc(&perf_stats.outbound_tl_runs_resched);
981 /* as we're sissies, we'll check next time */
982 if (likely(!atomic_read(&q->is_in_shutdown))) {
984 QDIO_DBF_TEXT4(0,trace,"busy,agn");
988 qdio_perf_stat_inc(&perf_stats.outbound_tl_runs);
989 qdio_perf_stat_inc(&perf_stats.tl_runs);
991 /* see comment in qdio_kick_outbound_q */
992 siga_attempts=atomic_read(&q->busy_siga_counter);
993 while (siga_attempts) {
994 atomic_dec(&q->busy_siga_counter);
995 qdio_kick_outbound_q(q);
999 if (qdio_has_outbound_q_moved(q))
1000 qdio_kick_outbound_handler(q);
1002 if (q->queue_type == QDIO_ZFCP_QFMT) {
1003 if ((!q->hydra_gives_outbound_pcis) &&
1004 (!qdio_is_outbound_q_done(q)))
1007 else if (((!q->is_iqdio_q) && (!q->is_pci_out)) ||
1008 (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH)) {
1010 * make sure buffer switch from PRIMED to EMPTY is noticed
1011 * and outbound_handler is called
1013 if (qdio_is_outbound_q_done(q)) {
1014 del_timer(&q->timer);
1016 if (!timer_pending(&q->timer))
1017 mod_timer(&q->timer, jiffies +
1018 QDIO_FORCE_CHECK_TIMEOUT);
1026 qdio_outbound_processing(struct qdio_q *q)
1028 __qdio_outbound_processing(q);
1031 /************************* INBOUND ROUTINES *******************************/
1035 qdio_get_inbound_buffer_frontier(struct qdio_q *q)
1037 struct qdio_irq *irq;
1039 volatile char *slsb;
1040 unsigned int count = 1;
1041 int first_not_to_check;
1042 #ifdef CONFIG_QDIO_DEBUG
1044 #endif /* CONFIG_QDIO_DEBUG */
1045 #ifdef QDIO_USE_PROCESSING_STATE
1046 int last_position=-1;
1047 #endif /* QDIO_USE_PROCESSING_STATE */
1049 QDIO_DBF_TEXT4(0,trace,"getibfro");
1050 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1052 irq = (struct qdio_irq *) q->irq_ptr;
1054 return qdio_qebsm_get_inbound_buffer_frontier(q);
1056 slsb=&q->slsb.acc.val[0];
1057 f_mod_no=f=q->first_to_check;
1059 * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1062 first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
1063 (QDIO_MAX_BUFFERS_PER_Q-1));
1066 * we don't use this one, as a PCI or we after a thin interrupt
1067 * will sync the queues
1072 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
1073 if (f==first_not_to_check)
1075 switch (slsb[f_mod_no]) {
1077 /* CU_EMPTY means frontier is reached */
1078 case SLSB_CU_INPUT_EMPTY:
1079 QDIO_DBF_TEXT5(0,trace,"inptempt");
1082 /* P_PRIMED means set slsb to P_PROCESSING and move on */
1083 case SLSB_P_INPUT_PRIMED:
1084 QDIO_DBF_TEXT5(0,trace,"inptprim");
1086 #ifdef QDIO_USE_PROCESSING_STATE
1088 * as soon as running under VM, polling the input queues will
1089 * kill VM in terms of CP overhead
1092 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1094 /* set the previous buffer to NOT_INIT. The current
1095 * buffer will be set to PROCESSING at the end of
1096 * this function to avoid further interrupts. */
1097 if (last_position>=0)
1098 set_slsb(q, &last_position,
1099 SLSB_P_INPUT_NOT_INIT, &count);
1100 atomic_set(&q->polling,1);
1101 last_position=f_mod_no;
1103 #else /* QDIO_USE_PROCESSING_STATE */
1104 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1105 #endif /* QDIO_USE_PROCESSING_STATE */
1107 * not needed, as the inbound queue will be synced on the next
1108 * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1112 atomic_dec(&q->number_of_buffers_used);
1115 case SLSB_P_INPUT_NOT_INIT:
1116 case SLSB_P_INPUT_PROCESSING:
1117 QDIO_DBF_TEXT5(0,trace,"inpnipro");
1120 /* P_ERROR means frontier is reached, break and report error */
1121 case SLSB_P_INPUT_ERROR:
1122 #ifdef CONFIG_QDIO_DEBUG
1123 sprintf(dbf_text,"inperr%2x",f_mod_no);
1124 QDIO_DBF_TEXT3(1,trace,dbf_text);
1125 #endif /* CONFIG_QDIO_DEBUG */
1126 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
1128 /* kind of process the buffer */
1129 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1132 q->error_status_flags|=
1133 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
1134 q->qdio_error=SLSB_P_INPUT_ERROR;
1135 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
1137 /* we increment the frontier, as this buffer
1138 * was processed obviously */
1139 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1140 atomic_dec(&q->number_of_buffers_used);
1142 #ifdef QDIO_USE_PROCESSING_STATE
1144 #endif /* QDIO_USE_PROCESSING_STATE */
1148 /* everything else means frontier not changed (HALTED or so) */
1153 q->first_to_check=f_mod_no;
1155 #ifdef QDIO_USE_PROCESSING_STATE
1156 if (last_position>=0)
1157 set_slsb(q, &last_position, SLSB_P_INPUT_PROCESSING, &count);
1158 #endif /* QDIO_USE_PROCESSING_STATE */
1160 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
1162 return q->first_to_check;
1166 qdio_has_inbound_q_moved(struct qdio_q *q)
1170 i=qdio_get_inbound_buffer_frontier(q);
1171 if ( (i!=GET_SAVED_FRONTIER(q)) ||
1172 (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
1174 if ((!q->siga_sync)&&(!q->hydra_gives_outbound_pcis))
1177 QDIO_DBF_TEXT4(0,trace,"inhasmvd");
1178 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1181 QDIO_DBF_TEXT4(0,trace,"inhsntmv");
1182 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1187 /* means, no more buffers to be filled */
1189 tiqdio_is_inbound_q_done(struct qdio_q *q)
1192 unsigned int start_buf, count;
1193 unsigned char state = 0;
1194 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1196 #ifdef CONFIG_QDIO_DEBUG
1200 no_used=atomic_read(&q->number_of_buffers_used);
1202 /* propagate the change from 82 to 80 through VM */
1205 #ifdef CONFIG_QDIO_DEBUG
1207 sprintf(dbf_text,"iqisnt%02x",no_used);
1208 QDIO_DBF_TEXT4(0,trace,dbf_text);
1210 QDIO_DBF_TEXT4(0,trace,"iniqisdo");
1212 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1213 #endif /* CONFIG_QDIO_DEBUG */
1217 if (!q->siga_sync && !irq->is_qebsm)
1218 /* we'll check for more primed buffers in qeth_stop_polling */
1220 if (irq->is_qebsm) {
1222 start_buf = q->first_to_check;
1223 qdio_do_eqbs(q, &state, &start_buf, &count);
1225 state = q->slsb.acc.val[q->first_to_check];
1226 if (state != SLSB_P_INPUT_PRIMED)
1228 * nothing more to do, if next buffer is not PRIMED.
1229 * note that we did a SYNC_MEMORY before, that there
1230 * has been a sychnronization.
1231 * we will return 0 below, as there is nothing to do
1232 * (stop_polling not necessary, as we have not been
1233 * using the PROCESSING state
1238 * ok, the next input buffer is primed. that means, that device state
1239 * change indicator and adapter local summary are set, so we will find
1241 * we will return 0 below, as there is nothing to do, except scheduling
1242 * ourselves for the next time.
1244 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1250 qdio_is_inbound_q_done(struct qdio_q *q)
1253 unsigned int start_buf, count;
1254 unsigned char state = 0;
1255 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1257 #ifdef CONFIG_QDIO_DEBUG
1261 no_used=atomic_read(&q->number_of_buffers_used);
1264 * we need that one for synchronization with the adapter, as it
1265 * does a kind of PCI avoidance
1270 QDIO_DBF_TEXT4(0,trace,"inqisdnA");
1271 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1274 if (irq->is_qebsm) {
1276 start_buf = q->first_to_check;
1277 qdio_do_eqbs(q, &state, &start_buf, &count);
1279 state = q->slsb.acc.val[q->first_to_check];
1280 if (state == SLSB_P_INPUT_PRIMED) {
1281 /* we got something to do */
1282 QDIO_DBF_TEXT4(0,trace,"inqisntA");
1283 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1287 /* on VM, we don't poll, so the q is always done here */
1290 if (q->hydra_gives_outbound_pcis)
1294 * at this point we know, that inbound first_to_check
1295 * has (probably) not moved (see qdio_inbound_processing)
1297 if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) {
1298 #ifdef CONFIG_QDIO_DEBUG
1299 QDIO_DBF_TEXT4(0,trace,"inqisdon");
1300 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1301 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1302 QDIO_DBF_TEXT4(0,trace,dbf_text);
1303 #endif /* CONFIG_QDIO_DEBUG */
1306 #ifdef CONFIG_QDIO_DEBUG
1307 QDIO_DBF_TEXT4(0,trace,"inqisntd");
1308 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1309 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1310 QDIO_DBF_TEXT4(0,trace,dbf_text);
1311 #endif /* CONFIG_QDIO_DEBUG */
1317 qdio_kick_inbound_handler(struct qdio_q *q)
1319 int count, start, end, real_end, i;
1320 #ifdef CONFIG_QDIO_DEBUG
1324 QDIO_DBF_TEXT4(0,trace,"kickinh");
1325 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1327 start=q->first_element_to_kick;
1328 real_end=q->first_to_check;
1329 end=(real_end+QDIO_MAX_BUFFERS_PER_Q-1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1337 i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1340 #ifdef CONFIG_QDIO_DEBUG
1341 sprintf(dbf_text,"s=%2xc=%2x",start,count);
1342 QDIO_DBF_TEXT4(0,trace,dbf_text);
1343 #endif /* CONFIG_QDIO_DEBUG */
1345 if (likely(q->state==QDIO_IRQ_STATE_ACTIVE))
1347 QDIO_STATUS_INBOUND_INT|q->error_status_flags,
1348 q->qdio_error,q->siga_error,q->q_no,start,count,
1351 /* for the next time: */
1352 q->first_element_to_kick=real_end;
1355 q->error_status_flags=0;
1357 qdio_perf_stat_inc(&perf_stats.inbound_cnt);
1361 __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
1363 struct qdio_irq *irq_ptr;
1367 QDIO_DBF_TEXT4(0,trace,"iqinproc");
1368 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1371 * we first want to reserve the q, so that we know, that we don't
1372 * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1375 if (unlikely(qdio_reserve_q(q))) {
1377 qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs_resched);
1379 * as we might just be about to stop polling, we make
1380 * sure that we check again at least once more
1385 qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs);
1386 if (unlikely(atomic_read(&q->is_in_shutdown))) {
1392 * we reset spare_ind_was_set, when the queue does not use the
1395 if (spare_ind_was_set)
1396 spare_ind_was_set = (q->dev_st_chg_ind == &spare_indicator);
1398 if (!(*(q->dev_st_chg_ind)) && !spare_ind_was_set)
1401 * q->dev_st_chg_ind is the indicator, be it shared or not.
1402 * only clear it, if indicator is non-shared
1404 if (!spare_ind_was_set)
1405 tiqdio_clear_summary_bit((__u32*)q->dev_st_chg_ind);
1407 if (q->hydra_gives_outbound_pcis) {
1408 if (!q->siga_sync_done_on_thinints) {
1410 } else if ((!q->siga_sync_done_on_outb_tis)&&
1411 (q->hydra_gives_outbound_pcis)) {
1412 SYNC_MEMORY_ALL_OUTB;
1418 * maybe we have to do work on our outbound queues... at least
1419 * we have to check the outbound-int-capable thinint-capable
1422 if (q->hydra_gives_outbound_pcis) {
1423 irq_ptr = (struct qdio_irq*)q->irq_ptr;
1424 for (i=0;i<irq_ptr->no_output_qs;i++) {
1425 oq = irq_ptr->output_qs[i];
1426 if (!qdio_is_outbound_q_done(oq)) {
1427 qdio_perf_stat_dec(&perf_stats.tl_runs);
1428 __qdio_outbound_processing(oq);
1433 if (!qdio_has_inbound_q_moved(q))
1436 qdio_kick_inbound_handler(q);
1437 if (tiqdio_is_inbound_q_done(q))
1438 if (!qdio_stop_polling(q)) {
1440 * we set the flags to get into the stuff next time,
1441 * see also comment in qdio_stop_polling
1443 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1451 tiqdio_inbound_processing(struct qdio_q *q)
1453 __tiqdio_inbound_processing(q, atomic_read(&spare_indicator_usecount));
1457 __qdio_inbound_processing(struct qdio_q *q)
1461 QDIO_DBF_TEXT4(0,trace,"qinproc");
1462 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1464 if (unlikely(qdio_reserve_q(q))) {
1466 qdio_perf_stat_inc(&perf_stats.inbound_tl_runs_resched);
1467 /* as we're sissies, we'll check next time */
1468 if (likely(!atomic_read(&q->is_in_shutdown))) {
1470 QDIO_DBF_TEXT4(0,trace,"busy,agn");
1474 qdio_perf_stat_inc(&perf_stats.inbound_tl_runs);
1475 qdio_perf_stat_inc(&perf_stats.tl_runs);
1478 if (qdio_has_inbound_q_moved(q)) {
1479 qdio_kick_inbound_handler(q);
1480 if (!qdio_stop_polling(q)) {
1482 if (q_laps<QDIO_Q_LAPS)
1487 if (!qdio_is_inbound_q_done(q))
1488 /* means poll time is not yet over */
1496 qdio_inbound_processing(struct qdio_q *q)
1498 __qdio_inbound_processing(q);
1501 /************************* MAIN ROUTINES *******************************/
1503 #ifdef QDIO_USE_PROCESSING_STATE
1505 tiqdio_reset_processing_state(struct qdio_q *q, int q_laps)
1513 * under VM, we have not used the PROCESSING state, so no
1514 * need to stop polling
1519 if (unlikely(qdio_reserve_q(q))) {
1521 qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs_resched);
1523 * as we might just be about to stop polling, we make
1524 * sure that we check again at least once more
1528 * sanity -- we'd get here without setting the
1531 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1535 if (qdio_stop_polling(q)) {
1539 if (q_laps<QDIO_Q_LAPS-1) {
1544 * we set the flags to get into the stuff
1545 * next time, see also comment in qdio_stop_polling
1547 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1553 #endif /* QDIO_USE_PROCESSING_STATE */
1556 tiqdio_inbound_checks(void)
1559 int spare_ind_was_set=0;
1560 #ifdef QDIO_USE_PROCESSING_STATE
1562 #endif /* QDIO_USE_PROCESSING_STATE */
1564 QDIO_DBF_TEXT4(0,trace,"iqdinbck");
1565 QDIO_DBF_TEXT5(0,trace,"iqlocsum");
1567 #ifdef QDIO_USE_PROCESSING_STATE
1569 #endif /* QDIO_USE_PROCESSING_STATE */
1571 /* when the spare indicator is used and set, save that and clear it */
1572 if ((atomic_read(&spare_indicator_usecount)) && spare_indicator) {
1573 spare_ind_was_set = 1;
1574 tiqdio_clear_summary_bit((__u32*)&spare_indicator);
1577 q=(struct qdio_q*)tiq_list;
1581 __tiqdio_inbound_processing(q, spare_ind_was_set);
1582 q=(struct qdio_q*)q->list_next;
1583 } while (q!=(struct qdio_q*)tiq_list);
1585 #ifdef QDIO_USE_PROCESSING_STATE
1586 q=(struct qdio_q*)tiq_list;
1590 ret = tiqdio_reset_processing_state(q, q_laps);
1597 q = (struct qdio_q*)q->list_next;
1603 } while (q!=(struct qdio_q*)tiq_list);
1604 #endif /* QDIO_USE_PROCESSING_STATE */
1608 tiqdio_tl(unsigned long data)
1610 QDIO_DBF_TEXT4(0,trace,"iqdio_tl");
1612 qdio_perf_stat_inc(&perf_stats.tl_runs);
1614 tiqdio_inbound_checks();
1617 /********************* GENERAL HELPER_ROUTINES ***********************/
1620 qdio_release_irq_memory(struct qdio_irq *irq_ptr)
1625 for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
1626 q = irq_ptr->input_qs[i];
1628 free_page((unsigned long) q->slib);
1629 kmem_cache_free(qdio_q_cache, q);
1631 q = irq_ptr->output_qs[i];
1633 free_page((unsigned long) q->slib);
1634 kmem_cache_free(qdio_q_cache, q);
1637 free_page((unsigned long) irq_ptr->qdr);
1638 free_page((unsigned long) irq_ptr);
1642 qdio_set_impl_params(struct qdio_irq *irq_ptr,
1643 unsigned int qib_param_field_format,
1644 /* pointer to 128 bytes or NULL, if no param field */
1645 unsigned char *qib_param_field,
1646 /* pointer to no_queues*128 words of data or NULL */
1647 unsigned int no_input_qs,
1648 unsigned int no_output_qs,
1649 unsigned long *input_slib_elements,
1650 unsigned long *output_slib_elements)
1657 irq_ptr->qib.pfmt=qib_param_field_format;
1658 if (qib_param_field)
1659 memcpy(irq_ptr->qib.parm,qib_param_field,
1660 QDIO_MAX_BUFFERS_PER_Q);
1662 if (input_slib_elements)
1663 for (i=0;i<no_input_qs;i++) {
1664 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1665 irq_ptr->input_qs[i]->slib->slibe[j].parms=
1666 input_slib_elements[
1667 i*QDIO_MAX_BUFFERS_PER_Q+j];
1669 if (output_slib_elements)
1670 for (i=0;i<no_output_qs;i++) {
1671 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1672 irq_ptr->output_qs[i]->slib->slibe[j].parms=
1673 output_slib_elements[
1674 i*QDIO_MAX_BUFFERS_PER_Q+j];
1679 qdio_alloc_qs(struct qdio_irq *irq_ptr,
1680 int no_input_qs, int no_output_qs)
1685 for (i = 0; i < no_input_qs; i++) {
1686 q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
1689 memset(q, 0, sizeof(*q));
1691 q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
1693 kmem_cache_free(qdio_q_cache, q);
1696 irq_ptr->input_qs[i]=q;
1699 for (i = 0; i < no_output_qs; i++) {
1700 q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
1703 memset(q, 0, sizeof(*q));
1705 q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
1707 kmem_cache_free(qdio_q_cache, q);
1710 irq_ptr->output_qs[i]=q;
1716 qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev,
1717 int no_input_qs, int no_output_qs,
1718 qdio_handler_t *input_handler,
1719 qdio_handler_t *output_handler,
1720 unsigned long int_parm,int q_format,
1721 unsigned long flags,
1722 void **inbound_sbals_array,
1723 void **outbound_sbals_array)
1727 char dbf_text[20]; /* see qdio_initialize */
1731 sprintf(dbf_text,"qfqs%4x",cdev->private->schid.sch_no);
1732 QDIO_DBF_TEXT0(0,setup,dbf_text);
1733 for (i=0;i<no_input_qs;i++) {
1734 q=irq_ptr->input_qs[i];
1736 memset(q,0,((char*)&q->slib)-((char*)q));
1737 sprintf(dbf_text,"in-q%4x",i);
1738 QDIO_DBF_TEXT0(0,setup,dbf_text);
1739 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1741 memset(q->slib,0,PAGE_SIZE);
1742 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1746 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1747 q->sbal[j]=*(inbound_sbals_array++);
1749 q->queue_type=q_format;
1750 q->int_parm=int_parm;
1751 q->schid = irq_ptr->schid;
1752 q->irq_ptr = irq_ptr;
1757 q->first_to_check=0;
1759 q->handler=input_handler;
1760 q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
1762 q->tasklet.data=(unsigned long)q;
1763 /* q->is_thinint_q isn't valid at this time, but
1764 * irq_ptr->is_thinint_irq is */
1765 q->tasklet.func=(void(*)(unsigned long))
1766 ((irq_ptr->is_thinint_irq)?&tiqdio_inbound_processing:
1767 &qdio_inbound_processing);
1769 /* actually this is not used for inbound queues. yet. */
1770 atomic_set(&q->busy_siga_counter,0);
1771 q->timing.busy_start=0;
1773 /* for (j=0;j<QDIO_STATS_NUMBER;j++)
1774 q->timing.last_transfer_times[j]=(qdio_get_micros()/
1775 QDIO_STATS_NUMBER)*j;
1776 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1780 if (i>0) irq_ptr->input_qs[i-1]->slib->nsliba=
1781 (unsigned long)(q->slib);
1782 q->slib->sla=(unsigned long)(q->sl);
1783 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1786 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1787 q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1789 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1791 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1792 ptr=(void*)&q->slsb;
1793 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1794 ptr=(void*)q->sbal[0];
1795 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1798 if (!irq_ptr->is_qebsm) {
1799 unsigned int count = 1;
1800 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
1801 set_slsb(q, &j, SLSB_P_INPUT_NOT_INIT, &count);
1805 for (i=0;i<no_output_qs;i++) {
1806 q=irq_ptr->output_qs[i];
1807 memset(q,0,((char*)&q->slib)-((char*)q));
1809 sprintf(dbf_text,"outq%4x",i);
1810 QDIO_DBF_TEXT0(0,setup,dbf_text);
1811 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1813 memset(q->slib,0,PAGE_SIZE);
1814 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1818 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1819 q->sbal[j]=*(outbound_sbals_array++);
1821 q->queue_type=q_format;
1822 if ((q->queue_type == QDIO_IQDIO_QFMT) &&
1823 (no_output_qs > 1) &&
1824 (i == no_output_qs-1))
1825 q->queue_type = QDIO_IQDIO_QFMT_ASYNCH;
1826 q->int_parm=int_parm;
1829 q->schid = irq_ptr->schid;
1831 q->irq_ptr = irq_ptr;
1834 q->first_to_check=0;
1836 q->handler=output_handler;
1838 q->tasklet.data=(unsigned long)q;
1839 q->tasklet.func=(void(*)(unsigned long))
1840 &qdio_outbound_processing;
1841 q->timer.function=(void(*)(unsigned long))
1842 &qdio_outbound_processing;
1843 q->timer.data = (long)q;
1844 init_timer(&q->timer);
1846 atomic_set(&q->busy_siga_counter,0);
1847 q->timing.busy_start=0;
1850 if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba=
1851 (unsigned long)(q->slib);
1852 q->slib->sla=(unsigned long)(q->sl);
1853 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1856 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1857 q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1859 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1861 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1862 ptr=(void*)&q->slsb;
1863 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1864 ptr=(void*)q->sbal[0];
1865 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1868 if (!irq_ptr->is_qebsm) {
1869 unsigned int count = 1;
1870 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
1871 set_slsb(q, &j, SLSB_P_OUTPUT_NOT_INIT, &count);
1877 qdio_fill_thresholds(struct qdio_irq *irq_ptr,
1878 unsigned int no_input_qs,
1879 unsigned int no_output_qs,
1880 unsigned int min_input_threshold,
1881 unsigned int max_input_threshold,
1882 unsigned int min_output_threshold,
1883 unsigned int max_output_threshold)
1888 for (i=0;i<no_input_qs;i++) {
1889 q=irq_ptr->input_qs[i];
1890 q->timing.threshold=max_input_threshold;
1891 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1892 q->threshold_classes[j].threshold=
1893 min_input_threshold+
1894 (max_input_threshold-min_input_threshold)/
1897 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1899 for (i=0;i<no_output_qs;i++) {
1900 q=irq_ptr->output_qs[i];
1901 q->timing.threshold=max_output_threshold;
1902 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1903 q->threshold_classes[j].threshold=
1904 min_output_threshold+
1905 (max_output_threshold-min_output_threshold)/
1908 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1913 tiqdio_thinint_handler(void)
1915 QDIO_DBF_TEXT4(0,trace,"thin_int");
1917 qdio_perf_stat_inc(&perf_stats.thinints);
1919 /* SVS only when needed:
1920 * issue SVS to benefit from iqdio interrupt avoidance
1921 * (SVS clears AISOI)*/
1923 tiqdio_clear_global_summary();
1925 tiqdio_inbound_checks();
1930 qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state)
1933 #ifdef CONFIG_QDIO_DEBUG
1936 QDIO_DBF_TEXT5(0,trace,"newstate");
1937 sprintf(dbf_text,"%4x%4x",irq_ptr->schid.sch_no,state);
1938 QDIO_DBF_TEXT5(0,trace,dbf_text);
1939 #endif /* CONFIG_QDIO_DEBUG */
1941 irq_ptr->state=state;
1942 for (i=0;i<irq_ptr->no_input_qs;i++)
1943 irq_ptr->input_qs[i]->state=state;
1944 for (i=0;i<irq_ptr->no_output_qs;i++)
1945 irq_ptr->output_qs[i]->state=state;
1950 qdio_irq_check_sense(struct subchannel_id schid, struct irb *irb)
1954 if (irb->esw.esw0.erw.cons) {
1955 sprintf(dbf_text,"sens%4x",schid.sch_no);
1956 QDIO_DBF_TEXT2(1,trace,dbf_text);
1957 QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN);
1959 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1960 QDIO_HEXDUMP16(WARN,"irb: ",irb);
1961 QDIO_HEXDUMP16(WARN,"sense data: ",irb->ecw);
1967 qdio_handle_pci(struct qdio_irq *irq_ptr)
1972 qdio_perf_stat_inc(&perf_stats.pcis);
1973 for (i=0;i<irq_ptr->no_input_qs;i++) {
1974 q=irq_ptr->input_qs[i];
1975 if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
1978 qdio_perf_stat_dec(&perf_stats.tl_runs);
1979 __qdio_inbound_processing(q);
1982 if (!irq_ptr->hydra_gives_outbound_pcis)
1984 for (i=0;i<irq_ptr->no_output_qs;i++) {
1985 q=irq_ptr->output_qs[i];
1986 if (qdio_is_outbound_q_done(q))
1988 qdio_perf_stat_dec(&perf_stats.tl_runs);
1989 if (!irq_ptr->sync_done_on_outb_pcis)
1991 __qdio_outbound_processing(q);
1995 static void qdio_establish_handle_irq(struct ccw_device*, int, int);
1998 qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm,
1999 int cstat, int dstat)
2001 struct qdio_irq *irq_ptr;
2005 irq_ptr = cdev->private->qdio_data;
2007 QDIO_DBF_TEXT2(1, trace, "ick2");
2008 sprintf(dbf_text,"%s", cdev->dev.bus_id);
2009 QDIO_DBF_TEXT2(1,trace,dbf_text);
2010 QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int));
2011 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2012 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2013 QDIO_PRINT_ERR("received check condition on activate " \
2014 "queues on device %s (cs=x%x, ds=x%x).\n",
2015 cdev->dev.bus_id, cstat, dstat);
2016 if (irq_ptr->no_input_qs) {
2017 q=irq_ptr->input_qs[0];
2018 } else if (irq_ptr->no_output_qs) {
2019 q=irq_ptr->output_qs[0];
2021 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2023 goto omit_handler_call;
2025 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
2026 QDIO_STATUS_LOOK_FOR_ERROR,
2027 0,0,0,-1,-1,q->int_parm);
2029 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED);
2034 qdio_call_shutdown(struct work_struct *work)
2036 struct ccw_device_private *priv;
2037 struct ccw_device *cdev;
2039 priv = container_of(work, struct ccw_device_private, kick_work);
2041 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2042 put_device(&cdev->dev);
2046 qdio_timeout_handler(struct ccw_device *cdev)
2048 struct qdio_irq *irq_ptr;
2051 QDIO_DBF_TEXT2(0, trace, "qtoh");
2052 sprintf(dbf_text, "%s", cdev->dev.bus_id);
2053 QDIO_DBF_TEXT2(0, trace, dbf_text);
2055 irq_ptr = cdev->private->qdio_data;
2056 sprintf(dbf_text, "state:%d", irq_ptr->state);
2057 QDIO_DBF_TEXT2(0, trace, dbf_text);
2059 switch (irq_ptr->state) {
2060 case QDIO_IRQ_STATE_INACTIVE:
2061 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
2062 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2063 QDIO_DBF_TEXT2(1,setup,"eq:timeo");
2064 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2066 case QDIO_IRQ_STATE_CLEANUP:
2067 QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
2069 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2070 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2072 case QDIO_IRQ_STATE_ESTABLISHED:
2073 case QDIO_IRQ_STATE_ACTIVE:
2074 /* I/O has been terminated by common I/O layer. */
2075 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2076 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2077 QDIO_DBF_TEXT2(1, trace, "cio:term");
2078 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
2079 if (get_device(&cdev->dev)) {
2080 /* Can't call shutdown from interrupt context. */
2081 PREPARE_WORK(&cdev->private->kick_work,
2082 qdio_call_shutdown);
2083 queue_work(ccw_device_work, &cdev->private->kick_work);
2089 ccw_device_set_timeout(cdev, 0);
2090 wake_up(&cdev->private->wait_q);
2094 qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
2096 struct qdio_irq *irq_ptr;
2100 #ifdef CONFIG_QDIO_DEBUG
2101 QDIO_DBF_TEXT4(0, trace, "qint");
2102 sprintf(dbf_text, "%s", cdev->dev.bus_id);
2103 QDIO_DBF_TEXT4(0, trace, dbf_text);
2104 #endif /* CONFIG_QDIO_DEBUG */
2107 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2108 "handler, device %s\n", cdev->dev.bus_id);
2112 irq_ptr = cdev->private->qdio_data;
2114 QDIO_DBF_TEXT2(1, trace, "uint");
2115 sprintf(dbf_text,"%s", cdev->dev.bus_id);
2116 QDIO_DBF_TEXT2(1,trace,dbf_text);
2117 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2123 /* Currently running i/o is in error. */
2124 switch (PTR_ERR(irb)) {
2126 QDIO_PRINT_ERR("i/o error on device %s\n",
2130 qdio_timeout_handler(cdev);
2133 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2134 PTR_ERR(irb), cdev->dev.bus_id);
2139 qdio_irq_check_sense(irq_ptr->schid, irb);
2141 #ifdef CONFIG_QDIO_DEBUG
2142 sprintf(dbf_text, "state:%d", irq_ptr->state);
2143 QDIO_DBF_TEXT4(0, trace, dbf_text);
2144 #endif /* CONFIG_QDIO_DEBUG */
2146 cstat = irb->scsw.cstat;
2147 dstat = irb->scsw.dstat;
2149 switch (irq_ptr->state) {
2150 case QDIO_IRQ_STATE_INACTIVE:
2151 qdio_establish_handle_irq(cdev, cstat, dstat);
2154 case QDIO_IRQ_STATE_CLEANUP:
2155 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2158 case QDIO_IRQ_STATE_ESTABLISHED:
2159 case QDIO_IRQ_STATE_ACTIVE:
2160 if (cstat & SCHN_STAT_PCI) {
2161 qdio_handle_pci(irq_ptr);
2165 if ((cstat&~SCHN_STAT_PCI)||dstat) {
2166 qdio_handle_activate_check(cdev, intparm, cstat, dstat);
2170 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2172 irq_ptr->state, cdev->dev.bus_id);
2174 wake_up(&cdev->private->wait_q);
2179 qdio_synchronize(struct ccw_device *cdev, unsigned int flags,
2180 unsigned int queue_number)
2184 struct qdio_irq *irq_ptr;
2186 #ifdef CONFIG_QDIO_DEBUG
2187 char dbf_text[15]="SyncXXXX";
2190 irq_ptr = cdev->private->qdio_data;
2194 #ifdef CONFIG_QDIO_DEBUG
2195 *((int*)(&dbf_text[4])) = irq_ptr->schid.sch_no;
2196 QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2197 *((int*)(&dbf_text[0]))=flags;
2198 *((int*)(&dbf_text[4]))=queue_number;
2199 QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2200 #endif /* CONFIG_QDIO_DEBUG */
2202 if (flags&QDIO_FLAG_SYNC_INPUT) {
2203 q=irq_ptr->input_qs[queue_number];
2206 if (!(irq_ptr->is_qebsm))
2207 cc = do_siga_sync(q->schid, 0, q->mask);
2208 } else if (flags&QDIO_FLAG_SYNC_OUTPUT) {
2209 q=irq_ptr->output_qs[queue_number];
2212 if (!(irq_ptr->is_qebsm))
2213 cc = do_siga_sync(q->schid, q->mask, 0);
2219 QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int));
2225 qdio_check_subchannel_qebsm(struct qdio_irq *irq_ptr, unsigned char qdioac,
2226 unsigned long token)
2230 unsigned int count, start_buf;
2233 /*check if QEBSM is disabled */
2234 if (!(irq_ptr->is_qebsm) || !(qdioac & 0x01)) {
2235 irq_ptr->is_qebsm = 0;
2236 irq_ptr->sch_token = 0;
2237 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2238 QDIO_DBF_TEXT0(0,setup,"noV=V");
2241 irq_ptr->sch_token = token;
2243 for (i = 0; i < irq_ptr->no_input_qs;i++) {
2244 q = irq_ptr->input_qs[i];
2245 count = QDIO_MAX_BUFFERS_PER_Q;
2247 set_slsb(q, &start_buf, SLSB_P_INPUT_NOT_INIT, &count);
2249 sprintf(dbf_text,"V=V:%2x",irq_ptr->is_qebsm);
2250 QDIO_DBF_TEXT0(0,setup,dbf_text);
2251 sprintf(dbf_text,"%8lx",irq_ptr->sch_token);
2252 QDIO_DBF_TEXT0(0,setup,dbf_text);
2254 for (i = 0; i < irq_ptr->no_output_qs; i++) {
2255 q = irq_ptr->output_qs[i];
2256 count = QDIO_MAX_BUFFERS_PER_Q;
2258 set_slsb(q, &start_buf, SLSB_P_OUTPUT_NOT_INIT, &count);
2263 qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
2266 unsigned char qdioac;
2268 struct chsc_header request;
2276 struct chsc_header response;
2295 QDIO_DBF_TEXT0(0,setup,"getssqd");
2297 ssqd_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2299 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2300 "SIGAs for sch x%x.\n", irq_ptr->schid.sch_no);
2301 irq_ptr->qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2302 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2303 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2304 irq_ptr->is_qebsm = 0;
2305 irq_ptr->sch_token = 0;
2306 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2310 ssqd_area->request = (struct chsc_header) {
2314 ssqd_area->first_sch = irq_ptr->schid.sch_no;
2315 ssqd_area->last_sch = irq_ptr->schid.sch_no;
2316 ssqd_area->ssid = irq_ptr->schid.ssid;
2317 result = chsc(ssqd_area);
2320 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
2321 "SIGAs for sch 0.%x.%x.\n", result,
2322 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2323 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2324 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2325 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2326 irq_ptr->is_qebsm = 0;
2330 if (ssqd_area->response.code != QDIO_CHSC_RESPONSE_CODE_OK) {
2331 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2332 "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n",
2333 ssqd_area->response.code,
2334 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2335 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2336 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2337 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2338 irq_ptr->is_qebsm = 0;
2341 if (!(ssqd_area->flags & CHSC_FLAG_QDIO_CAPABILITY) ||
2342 !(ssqd_area->flags & CHSC_FLAG_VALIDITY) ||
2343 (ssqd_area->sch != irq_ptr->schid.sch_no)) {
2344 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2345 "using all SIGAs.\n",
2346 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2347 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2348 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2349 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* worst case */
2350 irq_ptr->is_qebsm = 0;
2353 qdioac = ssqd_area->qdioac1;
2355 qdio_check_subchannel_qebsm(irq_ptr, qdioac,
2356 ssqd_area->sch_token);
2357 mempool_free(ssqd_area, qdio_mempool_scssc);
2358 irq_ptr->qdioac = qdioac;
2362 tiqdio_check_chsc_availability(void)
2366 if (!css_characteristics_avail)
2369 /* Check for bit 41. */
2370 if (!css_general_characteristics.aif) {
2371 QDIO_PRINT_WARN("Adapter interruption facility not " \
2376 /* Check for bits 107 and 108. */
2377 if (!css_chsc_characteristics.scssc ||
2378 !css_chsc_characteristics.scsscf) {
2379 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2380 "not available.\n");
2384 /* Check for OSA/FCP thin interrupts (bit 67). */
2385 hydra_thinints = css_general_characteristics.aif_osa;
2386 sprintf(dbf_text,"hydrati%1x", hydra_thinints);
2387 QDIO_DBF_TEXT0(0,setup,dbf_text);
2390 /* Check for QEBSM support in general (bit 58). */
2391 is_passthrough = css_general_characteristics.qebsm;
2393 sprintf(dbf_text,"cssQBS:%1x", is_passthrough);
2394 QDIO_DBF_TEXT0(0,setup,dbf_text);
2396 /* Check for aif time delay disablement fac (bit 56). If installed,
2397 * omit svs even under lpar (good point by rick again) */
2398 omit_svs = css_general_characteristics.aif_tdd;
2399 sprintf(dbf_text,"omitsvs%1x", omit_svs);
2400 QDIO_DBF_TEXT0(0,setup,dbf_text);
2406 tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2408 unsigned long real_addr_local_summary_bit;
2409 unsigned long real_addr_dev_st_chg_ind;
2413 unsigned int resp_code;
2417 struct chsc_header request;
2422 u64 summary_indicator_addr;
2423 u64 subchannel_indicator_addr;
2428 u32 word_with_d_bit;
2429 /* set to 0x10000000 to enable
2430 * time delay disablement facility */
2432 struct subchannel_id schid;
2433 u32 reserved6[1004];
2434 struct chsc_header response;
2438 if (!irq_ptr->is_thinint_irq)
2441 if (reset_to_zero) {
2442 real_addr_local_summary_bit=0;
2443 real_addr_dev_st_chg_ind=0;
2445 real_addr_local_summary_bit=
2446 virt_to_phys((volatile void *)indicators);
2447 real_addr_dev_st_chg_ind=
2448 virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
2451 scssc_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2453 QDIO_PRINT_WARN("No memory for setting indicators on " \
2454 "subchannel 0.%x.%x.\n",
2455 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2458 scssc_area->request = (struct chsc_header) {
2462 scssc_area->operation_code = 0;
2464 scssc_area->summary_indicator_addr = real_addr_local_summary_bit;
2465 scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind;
2466 scssc_area->ks = QDIO_STORAGE_KEY;
2467 scssc_area->kc = QDIO_STORAGE_KEY;
2468 scssc_area->isc = TIQDIO_THININT_ISC;
2469 scssc_area->schid = irq_ptr->schid;
2470 /* enables the time delay disablement facility. Don't care
2471 * whether it is really there (i.e. we haven't checked for
2473 if (css_general_characteristics.aif_tdd)
2474 scssc_area->word_with_d_bit = 0x10000000;
2476 QDIO_PRINT_WARN("Time delay disablement facility " \
2479 result = chsc(scssc_area);
2481 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2483 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,result);
2488 resp_code = scssc_area->response.code;
2489 if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2490 QDIO_PRINT_WARN("response upon setting indicators " \
2491 "is 0x%x.\n",resp_code);
2492 sprintf(dbf_text,"sidR%4x",resp_code);
2493 QDIO_DBF_TEXT1(0,trace,dbf_text);
2494 QDIO_DBF_TEXT1(0,setup,dbf_text);
2495 ptr=&scssc_area->response;
2496 QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN);
2501 QDIO_DBF_TEXT2(0,setup,"setscind");
2502 QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit,
2503 sizeof(unsigned long));
2504 QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
2507 mempool_free(scssc_area, qdio_mempool_scssc);
2513 tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2515 unsigned int resp_code;
2521 struct chsc_header request;
2528 u32 reserved5[1009];
2529 struct chsc_header response;
2533 if (!irq_ptr->is_thinint_irq)
2536 scsscf_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2538 QDIO_PRINT_WARN("No memory for setting delay target on " \
2539 "subchannel 0.%x.%x.\n",
2540 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2543 scsscf_area->request = (struct chsc_header) {
2548 scsscf_area->delay_target = delay_target<<16;
2550 result=chsc(scsscf_area);
2552 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2553 "cc=%i. Continuing.\n",
2554 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2560 resp_code = scsscf_area->response.code;
2561 if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2562 QDIO_PRINT_WARN("response upon setting delay target " \
2563 "is 0x%x. Continuing.\n",resp_code);
2564 sprintf(dbf_text,"sdtR%4x",resp_code);
2565 QDIO_DBF_TEXT1(0,trace,dbf_text);
2566 QDIO_DBF_TEXT1(0,setup,dbf_text);
2567 ptr=&scsscf_area->response;
2568 QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN);
2570 QDIO_DBF_TEXT2(0,trace,"delytrgt");
2571 QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
2572 result = 0; /* not critical */
2574 mempool_free(scsscf_area, qdio_mempool_scssc);
2579 qdio_cleanup(struct ccw_device *cdev, int how)
2581 struct qdio_irq *irq_ptr;
2585 irq_ptr = cdev->private->qdio_data;
2589 sprintf(dbf_text,"qcln%4x",irq_ptr->schid.sch_no);
2590 QDIO_DBF_TEXT1(0,trace,dbf_text);
2591 QDIO_DBF_TEXT0(0,setup,dbf_text);
2593 rc = qdio_shutdown(cdev, how);
2594 if ((rc == 0) || (rc == -EINPROGRESS))
2595 rc = qdio_free(cdev);
2600 qdio_shutdown(struct ccw_device *cdev, int how)
2602 struct qdio_irq *irq_ptr;
2606 unsigned long flags;
2610 irq_ptr = cdev->private->qdio_data;
2614 down(&irq_ptr->setting_up_sema);
2616 sprintf(dbf_text,"qsqs%4x",irq_ptr->schid.sch_no);
2617 QDIO_DBF_TEXT1(0,trace,dbf_text);
2618 QDIO_DBF_TEXT0(0,setup,dbf_text);
2620 /* mark all qs as uninteresting */
2621 for (i=0;i<irq_ptr->no_input_qs;i++)
2622 atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1);
2624 for (i=0;i<irq_ptr->no_output_qs;i++)
2625 atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1);
2627 tasklet_kill(&tiqdio_tasklet);
2629 for (i=0;i<irq_ptr->no_input_qs;i++) {
2630 qdio_unmark_q(irq_ptr->input_qs[i]);
2631 tasklet_kill(&irq_ptr->input_qs[i]->tasklet);
2632 wait_event_interruptible_timeout(cdev->private->wait_q,
2633 !atomic_read(&irq_ptr->
2636 QDIO_NO_USE_COUNT_TIMEOUT);
2637 if (atomic_read(&irq_ptr->input_qs[i]->use_count))
2638 result=-EINPROGRESS;
2641 for (i=0;i<irq_ptr->no_output_qs;i++) {
2642 tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
2643 del_timer(&irq_ptr->output_qs[i]->timer);
2644 wait_event_interruptible_timeout(cdev->private->wait_q,
2645 !atomic_read(&irq_ptr->
2648 QDIO_NO_USE_COUNT_TIMEOUT);
2649 if (atomic_read(&irq_ptr->output_qs[i]->use_count))
2650 result=-EINPROGRESS;
2653 /* cleanup subchannel */
2654 spin_lock_irqsave(get_ccwdev_lock(cdev),flags);
2655 if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) {
2656 rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
2657 timeout=QDIO_CLEANUP_CLEAR_TIMEOUT;
2658 } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) {
2659 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2660 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2661 } else { /* default behaviour */
2662 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2663 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2665 if (rc == -ENODEV) {
2666 /* No need to wait for device no longer present. */
2667 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2668 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2669 } else if (((void *)cdev->handler != (void *)qdio_handler) && rc == 0) {
2671 * Whoever put another handler there, has to cope with the
2672 * interrupt theirself. Might happen if qdio_shutdown was
2673 * called on already shutdown queues, but this shouldn't have
2676 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2677 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2678 } else if (rc == 0) {
2679 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
2680 ccw_device_set_timeout(cdev, timeout);
2681 spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags);
2683 wait_event(cdev->private->wait_q,
2684 irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
2685 irq_ptr->state == QDIO_IRQ_STATE_ERR);
2687 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2688 "device %s\n", result, cdev->dev.bus_id);
2689 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2693 if (irq_ptr->is_thinint_irq) {
2694 qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind);
2695 tiqdio_set_subchannel_ind(irq_ptr,1);
2696 /* reset adapter interrupt indicators */
2699 /* exchange int handlers, if necessary */
2700 if ((void*)cdev->handler == (void*)qdio_handler)
2701 cdev->handler=irq_ptr->original_int_handler;
2703 /* Ignore errors. */
2704 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2705 ccw_device_set_timeout(cdev, 0);
2707 up(&irq_ptr->setting_up_sema);
2712 qdio_free(struct ccw_device *cdev)
2714 struct qdio_irq *irq_ptr;
2717 irq_ptr = cdev->private->qdio_data;
2721 down(&irq_ptr->setting_up_sema);
2723 sprintf(dbf_text,"qfqs%4x",irq_ptr->schid.sch_no);
2724 QDIO_DBF_TEXT1(0,trace,dbf_text);
2725 QDIO_DBF_TEXT0(0,setup,dbf_text);
2727 cdev->private->qdio_data = NULL;
2729 up(&irq_ptr->setting_up_sema);
2731 qdio_release_irq_memory(irq_ptr);
2732 module_put(THIS_MODULE);
2737 qdio_allocate_do_dbf(struct qdio_initialize *init_data)
2739 char dbf_text[20]; /* if a printf printed out more than 8 chars */
2741 sprintf(dbf_text,"qfmt:%x",init_data->q_format);
2742 QDIO_DBF_TEXT0(0,setup,dbf_text);
2743 QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8);
2744 sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format);
2745 QDIO_DBF_TEXT0(0,setup,dbf_text);
2746 QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*));
2747 QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*));
2748 QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*));
2749 sprintf(dbf_text,"miit%4x",init_data->min_input_threshold);
2750 QDIO_DBF_TEXT0(0,setup,dbf_text);
2751 sprintf(dbf_text,"mait%4x",init_data->max_input_threshold);
2752 QDIO_DBF_TEXT0(0,setup,dbf_text);
2753 sprintf(dbf_text,"miot%4x",init_data->min_output_threshold);
2754 QDIO_DBF_TEXT0(0,setup,dbf_text);
2755 sprintf(dbf_text,"maot%4x",init_data->max_output_threshold);
2756 QDIO_DBF_TEXT0(0,setup,dbf_text);
2757 sprintf(dbf_text,"niq:%4x",init_data->no_input_qs);
2758 QDIO_DBF_TEXT0(0,setup,dbf_text);
2759 sprintf(dbf_text,"noq:%4x",init_data->no_output_qs);
2760 QDIO_DBF_TEXT0(0,setup,dbf_text);
2761 QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*));
2762 QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*));
2763 QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long));
2764 QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long));
2765 QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*));
2766 QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*));
2770 qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt)
2772 irq_ptr->input_qs[i]->is_iqdio_q = iqfmt;
2773 irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2775 irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib);
2777 irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl);
2779 irq_ptr->qdr->qdf0[i].slsba=
2780 (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]);
2782 irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY;
2783 irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY;
2784 irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY;
2785 irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY;
2789 qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i,
2792 irq_ptr->output_qs[i]->is_iqdio_q = iqfmt;
2793 irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2795 irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib);
2797 irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl);
2799 irq_ptr->qdr->qdf0[i+j].slsba=
2800 (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]);
2802 irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY;
2803 irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY;
2804 irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY;
2805 irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY;
2810 qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr)
2814 for (i=0;i<irq_ptr->no_input_qs;i++) {
2815 irq_ptr->input_qs[i]->siga_sync=
2816 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2817 irq_ptr->input_qs[i]->siga_in=
2818 irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2819 irq_ptr->input_qs[i]->siga_out=
2820 irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2821 irq_ptr->input_qs[i]->siga_sync_done_on_thinints=
2822 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2823 irq_ptr->input_qs[i]->hydra_gives_outbound_pcis=
2824 irq_ptr->hydra_gives_outbound_pcis;
2825 irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis=
2827 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2828 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2829 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2830 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2836 qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr)
2840 for (i=0;i<irq_ptr->no_output_qs;i++) {
2841 irq_ptr->output_qs[i]->siga_sync=
2842 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2843 irq_ptr->output_qs[i]->siga_in=
2844 irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2845 irq_ptr->output_qs[i]->siga_out=
2846 irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2847 irq_ptr->output_qs[i]->siga_sync_done_on_thinints=
2848 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2849 irq_ptr->output_qs[i]->hydra_gives_outbound_pcis=
2850 irq_ptr->hydra_gives_outbound_pcis;
2851 irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis=
2853 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2854 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2855 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2856 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2862 qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat,
2866 struct qdio_irq *irq_ptr;
2868 irq_ptr = cdev->private->qdio_data;
2870 if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) {
2871 sprintf(dbf_text,"ick1%4x",irq_ptr->schid.sch_no);
2872 QDIO_DBF_TEXT2(1,trace,dbf_text);
2873 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2874 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2875 QDIO_PRINT_ERR("received check condition on establish " \
2876 "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2877 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2879 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR);
2882 if (!(dstat & DEV_STAT_DEV_END)) {
2883 QDIO_DBF_TEXT2(1,setup,"eq:no de");
2884 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2885 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2886 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
2887 "device end: dstat=%02x, cstat=%02x\n",
2888 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2890 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2894 if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) {
2895 QDIO_DBF_TEXT2(1,setup,"eq:badio");
2896 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2897 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2898 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
2899 "the following devstat: dstat=%02x, "
2900 "cstat=%02x\n", irq_ptr->schid.ssid,
2901 irq_ptr->schid.sch_no, dstat, cstat);
2902 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2909 qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat)
2911 struct qdio_irq *irq_ptr;
2914 irq_ptr = cdev->private->qdio_data;
2916 sprintf(dbf_text,"qehi%4x",cdev->private->schid.sch_no);
2917 QDIO_DBF_TEXT0(0,setup,dbf_text);
2918 QDIO_DBF_TEXT0(0,trace,dbf_text);
2920 if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat)) {
2921 ccw_device_set_timeout(cdev, 0);
2925 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED);
2926 ccw_device_set_timeout(cdev, 0);
2930 qdio_initialize(struct qdio_initialize *init_data)
2935 sprintf(dbf_text,"qini%4x",init_data->cdev->private->schid.sch_no);
2936 QDIO_DBF_TEXT0(0,setup,dbf_text);
2937 QDIO_DBF_TEXT0(0,trace,dbf_text);
2939 rc = qdio_allocate(init_data);
2941 rc = qdio_establish(init_data);
2943 qdio_free(init_data->cdev);
2951 qdio_allocate(struct qdio_initialize *init_data)
2953 struct qdio_irq *irq_ptr;
2956 sprintf(dbf_text,"qalc%4x",init_data->cdev->private->schid.sch_no);
2957 QDIO_DBF_TEXT0(0,setup,dbf_text);
2958 QDIO_DBF_TEXT0(0,trace,dbf_text);
2959 if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2960 (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2961 ((init_data->no_input_qs) && (!init_data->input_handler)) ||
2962 ((init_data->no_output_qs) && (!init_data->output_handler)) )
2965 if (!init_data->input_sbal_addr_array)
2968 if (!init_data->output_sbal_addr_array)
2971 qdio_allocate_do_dbf(init_data);
2974 irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
2976 QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
2977 QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
2980 QDIO_PRINT_ERR("allocation of irq_ptr failed!\n");
2984 init_MUTEX(&irq_ptr->setting_up_sema);
2986 /* QDR must be in DMA area since CCW data address is only 32 bit */
2987 irq_ptr->qdr = (struct qdr *) __get_free_page(GFP_KERNEL | GFP_DMA);
2988 if (!(irq_ptr->qdr)) {
2989 free_page((unsigned long) irq_ptr);
2990 QDIO_PRINT_ERR("allocation of irq_ptr->qdr failed!\n");
2993 QDIO_DBF_TEXT0(0,setup,"qdr:");
2994 QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*));
2996 if (qdio_alloc_qs(irq_ptr,
2997 init_data->no_input_qs,
2998 init_data->no_output_qs)) {
2999 QDIO_PRINT_ERR("queue allocation failed!\n");
3000 qdio_release_irq_memory(irq_ptr);
3004 init_data->cdev->private->qdio_data = irq_ptr;
3006 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE);
3011 static int qdio_fill_irq(struct qdio_initialize *init_data)
3017 struct qdio_irq *irq_ptr;
3019 irq_ptr = init_data->cdev->private->qdio_data;
3021 memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr));
3023 /* wipes qib.ac, required by ar7063 */
3024 memset(irq_ptr->qdr,0,sizeof(struct qdr));
3026 irq_ptr->int_parm=init_data->int_parm;
3028 irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
3029 irq_ptr->no_input_qs=init_data->no_input_qs;
3030 irq_ptr->no_output_qs=init_data->no_output_qs;
3032 if (init_data->q_format==QDIO_IQDIO_QFMT) {
3033 irq_ptr->is_iqdio_irq=1;
3034 irq_ptr->is_thinint_irq=1;
3036 irq_ptr->is_iqdio_irq=0;
3037 irq_ptr->is_thinint_irq=hydra_thinints;
3039 sprintf(dbf_text,"is_i_t%1x%1x",
3040 irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq);
3041 QDIO_DBF_TEXT2(0,setup,dbf_text);
3043 if (irq_ptr->is_thinint_irq) {
3044 irq_ptr->dev_st_chg_ind = qdio_get_indicator();
3045 QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*));
3046 if (!irq_ptr->dev_st_chg_ind) {
3047 QDIO_PRINT_WARN("no indicator location available " \
3048 "for irq 0.%x.%x\n",
3049 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
3050 qdio_release_irq_memory(irq_ptr);
3056 irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD;
3057 irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT;
3058 irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD;
3059 irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT;
3061 qdio_fill_qs(irq_ptr, init_data->cdev,
3062 init_data->no_input_qs,
3063 init_data->no_output_qs,
3064 init_data->input_handler,
3065 init_data->output_handler,init_data->int_parm,
3066 init_data->q_format,init_data->flags,
3067 init_data->input_sbal_addr_array,
3068 init_data->output_sbal_addr_array);
3070 if (!try_module_get(THIS_MODULE)) {
3071 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3072 qdio_release_irq_memory(irq_ptr);
3076 qdio_fill_thresholds(irq_ptr,init_data->no_input_qs,
3077 init_data->no_output_qs,
3078 init_data->min_input_threshold,
3079 init_data->max_input_threshold,
3080 init_data->min_output_threshold,
3081 init_data->max_output_threshold);
3084 irq_ptr->qdr->qfmt=init_data->q_format;
3085 irq_ptr->qdr->iqdcnt=init_data->no_input_qs;
3086 irq_ptr->qdr->oqdcnt=init_data->no_output_qs;
3087 irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */
3088 irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4;
3090 irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib;
3091 irq_ptr->qdr->qkey=QDIO_STORAGE_KEY;
3094 irq_ptr->is_qebsm = is_passthrough;
3095 if (irq_ptr->is_qebsm)
3096 irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
3098 irq_ptr->qib.qfmt=init_data->q_format;
3099 if (init_data->no_input_qs)
3100 irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib);
3101 if (init_data->no_output_qs)
3102 irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib);
3103 memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8);
3105 qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format,
3106 init_data->qib_param_field,
3107 init_data->no_input_qs,
3108 init_data->no_output_qs,
3109 init_data->input_slib_elements,
3110 init_data->output_slib_elements);
3112 /* first input descriptors, then output descriptors */
3113 is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0;
3114 for (i=0;i<init_data->no_input_qs;i++)
3115 qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio);
3117 for (i=0;i<init_data->no_output_qs;i++)
3118 qdio_allocate_fill_output_desc(irq_ptr, i,
3119 init_data->no_input_qs,
3122 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3124 /* get qdio commands */
3125 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
3127 QDIO_DBF_TEXT2(1,setup,"no eq");
3128 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3129 "Trying to use default.\n");
3131 irq_ptr->equeue = *ciw;
3132 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
3134 QDIO_DBF_TEXT2(1,setup,"no aq");
3135 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3136 "Trying to use default.\n");
3138 irq_ptr->aqueue = *ciw;
3140 /* Set new interrupt handler. */
3141 irq_ptr->original_int_handler = init_data->cdev->handler;
3142 init_data->cdev->handler = qdio_handler;
3148 qdio_establish(struct qdio_initialize *init_data)
3150 struct qdio_irq *irq_ptr;
3151 unsigned long saveflags;
3152 int result, result2;
3153 struct ccw_device *cdev;
3156 cdev=init_data->cdev;
3157 irq_ptr = cdev->private->qdio_data;
3161 if (cdev->private->state != DEV_STATE_ONLINE)
3164 down(&irq_ptr->setting_up_sema);
3166 qdio_fill_irq(init_data);
3168 /* the thinint CHSC stuff */
3169 if (irq_ptr->is_thinint_irq) {
3171 result = tiqdio_set_subchannel_ind(irq_ptr,0);
3173 up(&irq_ptr->setting_up_sema);
3174 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3177 tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET);
3180 sprintf(dbf_text,"qest%4x",cdev->private->schid.sch_no);
3181 QDIO_DBF_TEXT0(0,setup,dbf_text);
3182 QDIO_DBF_TEXT0(0,trace,dbf_text);
3185 irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd;
3186 irq_ptr->ccw.flags=CCW_FLAG_SLI;
3187 irq_ptr->ccw.count=irq_ptr->equeue.count;
3188 irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr);
3190 spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3192 ccw_device_set_options_mask(cdev, 0);
3193 result=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3194 QDIO_DOING_ESTABLISH,0, 0,
3195 QDIO_ESTABLISH_TIMEOUT);
3197 result2=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3198 QDIO_DOING_ESTABLISH,0,0,
3199 QDIO_ESTABLISH_TIMEOUT);
3200 sprintf(dbf_text,"eq:io%4x",result);
3201 QDIO_DBF_TEXT2(1,setup,dbf_text);
3203 sprintf(dbf_text,"eq:io%4x",result);
3204 QDIO_DBF_TEXT2(1,setup,dbf_text);
3206 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3207 "returned %i, next try returned %i\n",
3208 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3212 ccw_device_set_timeout(cdev, 0);
3215 spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3218 up(&irq_ptr->setting_up_sema);
3219 qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR);
3223 /* Timeout is cared for already by using ccw_device_start_timeout(). */
3224 wait_event_interruptible(cdev->private->wait_q,
3225 irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
3226 irq_ptr->state == QDIO_IRQ_STATE_ERR);
3228 if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED)
3231 up(&irq_ptr->setting_up_sema);
3232 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3236 qdio_get_ssqd_information(irq_ptr);
3237 /* if this gets set once, we're running under VM and can omit SVSes */
3238 if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY)
3241 sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac);
3242 QDIO_DBF_TEXT2(0,setup,dbf_text);
3244 sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac);
3245 QDIO_DBF_TEXT2(0,setup,dbf_text);
3247 irq_ptr->hydra_gives_outbound_pcis=
3248 irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED;
3249 irq_ptr->sync_done_on_outb_pcis=
3250 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS;
3252 qdio_initialize_set_siga_flags_input(irq_ptr);
3253 qdio_initialize_set_siga_flags_output(irq_ptr);
3255 up(&irq_ptr->setting_up_sema);
3262 qdio_activate(struct ccw_device *cdev, int flags)
3264 struct qdio_irq *irq_ptr;
3265 int i,result=0,result2;
3266 unsigned long saveflags;
3267 char dbf_text[20]; /* see qdio_initialize */
3269 irq_ptr = cdev->private->qdio_data;
3273 if (cdev->private->state != DEV_STATE_ONLINE)
3276 down(&irq_ptr->setting_up_sema);
3277 if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) {
3282 sprintf(dbf_text,"qact%4x", irq_ptr->schid.sch_no);
3283 QDIO_DBF_TEXT2(0,setup,dbf_text);
3284 QDIO_DBF_TEXT2(0,trace,dbf_text);
3287 irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd;
3288 irq_ptr->ccw.flags=CCW_FLAG_SLI;
3289 irq_ptr->ccw.count=irq_ptr->aqueue.count;
3290 irq_ptr->ccw.cda=QDIO_GET_ADDR(0);
3292 spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3294 ccw_device_set_timeout(cdev, 0);
3295 ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
3296 result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE,
3297 0, DOIO_DENY_PREFETCH);
3299 result2=ccw_device_start(cdev,&irq_ptr->ccw,
3300 QDIO_DOING_ACTIVATE,0,0);
3301 sprintf(dbf_text,"aq:io%4x",result);
3302 QDIO_DBF_TEXT2(1,setup,dbf_text);
3304 sprintf(dbf_text,"aq:io%4x",result);
3305 QDIO_DBF_TEXT2(1,setup,dbf_text);
3307 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3308 "returned %i, next try returned %i\n",
3309 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3314 spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3318 for (i=0;i<irq_ptr->no_input_qs;i++) {
3319 if (irq_ptr->is_thinint_irq) {
3321 * that way we know, that, if we will get interrupted
3322 * by tiqdio_inbound_processing, qdio_unmark_q will
3325 qdio_reserve_q(irq_ptr->input_qs[i]);
3326 qdio_mark_tiq(irq_ptr->input_qs[i]);
3327 qdio_release_q(irq_ptr->input_qs[i]);
3331 if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) {
3332 for (i=0;i<irq_ptr->no_input_qs;i++) {
3333 irq_ptr->input_qs[i]->is_input_q|=
3334 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT;
3338 wait_event_interruptible_timeout(cdev->private->wait_q,
3340 QDIO_IRQ_STATE_STOPPED) ||
3342 QDIO_IRQ_STATE_ERR)),
3343 QDIO_ACTIVATE_TIMEOUT);
3345 switch (irq_ptr->state) {
3346 case QDIO_IRQ_STATE_STOPPED:
3347 case QDIO_IRQ_STATE_ERR:
3348 up(&irq_ptr->setting_up_sema);
3349 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3350 down(&irq_ptr->setting_up_sema);
3354 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
3358 up(&irq_ptr->setting_up_sema);
3363 /* buffers filled forwards again to make Rick happy */
3365 qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx,
3366 unsigned int count, struct qdio_buffer *buffers)
3368 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3371 qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3372 if (irq->is_qebsm) {
3374 tmp = set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
3381 set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
3384 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
3389 qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx,
3390 unsigned int count, struct qdio_buffer *buffers)
3392 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3395 qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3396 if (irq->is_qebsm) {
3398 tmp = set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3406 set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3409 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
3414 do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags,
3415 unsigned int qidx, unsigned int count,
3416 struct qdio_buffer *buffers)
3420 /* This is the inbound handling of queues */
3421 used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3423 qdio_do_qdio_fill_input(q,qidx,count,buffers);
3425 if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&&
3426 (callflags&QDIO_FLAG_UNDER_INTERRUPT))
3427 atomic_xchg(&q->polling,0);
3431 if (callflags&QDIO_FLAG_DONT_SIGA)
3436 result=qdio_siga_input(q);
3439 q->error_status_flags|=
3440 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
3441 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
3442 q->siga_error=result;
3450 do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
3451 unsigned int qidx, unsigned int count,
3452 struct qdio_buffer *buffers)
3455 unsigned int cnt, start_buf;
3456 unsigned char state = 0;
3457 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3459 /* This is the outbound handling of queues */
3460 qdio_do_qdio_fill_output(q,qidx,count,buffers);
3462 used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3464 if (callflags&QDIO_FLAG_DONT_SIGA) {
3465 qdio_perf_stat_inc(&perf_stats.outbound_cnt);
3468 if (callflags & QDIO_FLAG_PCI_OUT)
3472 if (q->is_iqdio_q) {
3473 /* one siga for every sbal */
3475 qdio_kick_outbound_q(q);
3477 __qdio_outbound_processing(q);
3479 /* under VM, we do a SIGA sync unconditionally */
3483 * w/o shadow queues (else branch of
3484 * SYNC_MEMORY :-/ ), we try to
3485 * fast-requeue buffers
3487 if (irq->is_qebsm) {
3489 start_buf = ((qidx+QDIO_MAX_BUFFERS_PER_Q-1) &
3490 (QDIO_MAX_BUFFERS_PER_Q-1));
3491 qdio_do_eqbs(q, &state, &start_buf, &cnt);
3493 state = q->slsb.acc.val[(qidx+QDIO_MAX_BUFFERS_PER_Q-1)
3494 &(QDIO_MAX_BUFFERS_PER_Q-1) ];
3495 if (state != SLSB_CU_OUTPUT_PRIMED) {
3496 qdio_kick_outbound_q(q);
3498 QDIO_DBF_TEXT3(0,trace, "fast-req");
3499 qdio_perf_stat_inc(&perf_stats.fast_reqs);
3503 * only marking the q could take too long,
3504 * the upper layer module could do a lot of
3505 * traffic in that time
3507 __qdio_outbound_processing(q);
3510 qdio_perf_stat_inc(&perf_stats.outbound_cnt);
3513 /* count must be 1 in iqdio */
3515 do_QDIO(struct ccw_device *cdev,unsigned int callflags,
3516 unsigned int queue_number, unsigned int qidx,
3517 unsigned int count,struct qdio_buffer *buffers)
3519 struct qdio_irq *irq_ptr;
3520 #ifdef CONFIG_QDIO_DEBUG
3523 sprintf(dbf_text,"doQD%04x",cdev->private->schid.sch_no);
3524 QDIO_DBF_TEXT3(0,trace,dbf_text);
3525 #endif /* CONFIG_QDIO_DEBUG */
3527 if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) ||
3528 (count>QDIO_MAX_BUFFERS_PER_Q) ||
3529 (queue_number>QDIO_MAX_QUEUES_PER_IRQ) )
3535 irq_ptr = cdev->private->qdio_data;
3539 #ifdef CONFIG_QDIO_DEBUG
3540 if (callflags&QDIO_FLAG_SYNC_INPUT)
3541 QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number],
3544 QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number],
3546 sprintf(dbf_text,"flag%04x",callflags);
3547 QDIO_DBF_TEXT3(0,trace,dbf_text);
3548 sprintf(dbf_text,"qi%02xct%02x",qidx,count);
3549 QDIO_DBF_TEXT3(0,trace,dbf_text);
3550 #endif /* CONFIG_QDIO_DEBUG */
3552 if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE)
3555 if (callflags&QDIO_FLAG_SYNC_INPUT)
3556 do_qdio_handle_inbound(irq_ptr->input_qs[queue_number],
3557 callflags, qidx, count, buffers);
3558 else if (callflags&QDIO_FLAG_SYNC_OUTPUT)
3559 do_qdio_handle_outbound(irq_ptr->output_qs[queue_number],
3560 callflags, qidx, count, buffers);
3562 QDIO_DBF_TEXT3(1,trace,"doQD:inv");
3569 qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
3570 int buffer_length, int *eof, void *data)
3574 /* we are always called with buffer_length=4k, so we all
3575 deliver on the first read */
3579 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3581 _OUTP_IT("Number of tasklet runs (total) : %li\n",
3582 (long)atomic64_read(&perf_stats.tl_runs));
3583 _OUTP_IT("Inbound tasklet runs tried/retried : %li/%li\n",
3584 (long)atomic64_read(&perf_stats.inbound_tl_runs),
3585 (long)atomic64_read(&perf_stats.inbound_tl_runs_resched));
3586 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %li/%li\n",
3587 (long)atomic64_read(&perf_stats.inbound_thin_tl_runs),
3588 (long)atomic64_read(&perf_stats.inbound_thin_tl_runs_resched));
3589 _OUTP_IT("Outbound tasklet runs tried/retried : %li/%li\n",
3590 (long)atomic64_read(&perf_stats.outbound_tl_runs),
3591 (long)atomic64_read(&perf_stats.outbound_tl_runs_resched));
3593 _OUTP_IT("Number of SIGA sync's issued : %li\n",
3594 (long)atomic64_read(&perf_stats.siga_syncs));
3595 _OUTP_IT("Number of SIGA in's issued : %li\n",
3596 (long)atomic64_read(&perf_stats.siga_ins));
3597 _OUTP_IT("Number of SIGA out's issued : %li\n",
3598 (long)atomic64_read(&perf_stats.siga_outs));
3599 _OUTP_IT("Number of PCIs caught : %li\n",
3600 (long)atomic64_read(&perf_stats.pcis));
3601 _OUTP_IT("Number of adapter interrupts caught : %li\n",
3602 (long)atomic64_read(&perf_stats.thinints));
3603 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %li\n",
3604 (long)atomic64_read(&perf_stats.fast_reqs));
3606 _OUTP_IT("Number of inbound transfers : %li\n",
3607 (long)atomic64_read(&perf_stats.inbound_cnt));
3608 _OUTP_IT("Number of do_QDIOs outbound : %li\n",
3609 (long)atomic64_read(&perf_stats.outbound_cnt));
3610 #else /* CONFIG_64BIT */
3611 _OUTP_IT("Number of tasklet runs (total) : %i\n",
3612 atomic_read(&perf_stats.tl_runs));
3613 _OUTP_IT("Inbound tasklet runs tried/retried : %i/%i\n",
3614 atomic_read(&perf_stats.inbound_tl_runs),
3615 atomic_read(&perf_stats.inbound_tl_runs_resched));
3616 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %i/%i\n",
3617 atomic_read(&perf_stats.inbound_thin_tl_runs),
3618 atomic_read(&perf_stats.inbound_thin_tl_runs_resched));
3619 _OUTP_IT("Outbound tasklet runs tried/retried : %i/%i\n",
3620 atomic_read(&perf_stats.outbound_tl_runs),
3621 atomic_read(&perf_stats.outbound_tl_runs_resched));
3623 _OUTP_IT("Number of SIGA sync's issued : %i\n",
3624 atomic_read(&perf_stats.siga_syncs));
3625 _OUTP_IT("Number of SIGA in's issued : %i\n",
3626 atomic_read(&perf_stats.siga_ins));
3627 _OUTP_IT("Number of SIGA out's issued : %i\n",
3628 atomic_read(&perf_stats.siga_outs));
3629 _OUTP_IT("Number of PCIs caught : %i\n",
3630 atomic_read(&perf_stats.pcis));
3631 _OUTP_IT("Number of adapter interrupts caught : %i\n",
3632 atomic_read(&perf_stats.thinints));
3633 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %i\n",
3634 atomic_read(&perf_stats.fast_reqs));
3636 _OUTP_IT("Number of inbound transfers : %i\n",
3637 atomic_read(&perf_stats.inbound_cnt));
3638 _OUTP_IT("Number of do_QDIOs outbound : %i\n",
3639 atomic_read(&perf_stats.outbound_cnt));
3640 #endif /* CONFIG_64BIT */
3646 static struct proc_dir_entry *qdio_perf_proc_file;
3649 qdio_add_procfs_entry(void)
3651 proc_perf_file_registration=0;
3652 qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
3653 S_IFREG|0444,&proc_root);
3654 if (qdio_perf_proc_file) {
3655 qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read;
3656 } else proc_perf_file_registration=-1;
3658 if (proc_perf_file_registration)
3659 QDIO_PRINT_WARN("was not able to register perf. " \
3660 "proc-file (%i).\n",
3661 proc_perf_file_registration);
3665 qdio_remove_procfs_entry(void)
3667 if (!proc_perf_file_registration) /* means if it went ok earlier */
3668 remove_proc_entry(QDIO_PERF,&proc_root);
3672 * attributes in sysfs
3673 *****************************************************************************/
3676 qdio_performance_stats_show(struct bus_type *bus, char *buf)
3678 return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0);
3682 qdio_performance_stats_store(struct bus_type *bus, const char *buf, size_t count)
3687 i = simple_strtoul(buf, &tmp, 16);
3688 if ((i == 0) || (i == 1)) {
3689 if (i == qdio_performance_stats)
3691 qdio_performance_stats = i;
3693 /* reset perf. stat. info */
3695 atomic64_set(&perf_stats.tl_runs, 0);
3696 atomic64_set(&perf_stats.outbound_tl_runs, 0);
3697 atomic64_set(&perf_stats.inbound_tl_runs, 0);
3698 atomic64_set(&perf_stats.inbound_tl_runs_resched, 0);
3699 atomic64_set(&perf_stats.inbound_thin_tl_runs, 0);
3700 atomic64_set(&perf_stats.inbound_thin_tl_runs_resched,
3702 atomic64_set(&perf_stats.siga_outs, 0);
3703 atomic64_set(&perf_stats.siga_ins, 0);
3704 atomic64_set(&perf_stats.siga_syncs, 0);
3705 atomic64_set(&perf_stats.pcis, 0);
3706 atomic64_set(&perf_stats.thinints, 0);
3707 atomic64_set(&perf_stats.fast_reqs, 0);
3708 atomic64_set(&perf_stats.outbound_cnt, 0);
3709 atomic64_set(&perf_stats.inbound_cnt, 0);
3710 #else /* CONFIG_64BIT */
3711 atomic_set(&perf_stats.tl_runs, 0);
3712 atomic_set(&perf_stats.outbound_tl_runs, 0);
3713 atomic_set(&perf_stats.inbound_tl_runs, 0);
3714 atomic_set(&perf_stats.inbound_tl_runs_resched, 0);
3715 atomic_set(&perf_stats.inbound_thin_tl_runs, 0);
3716 atomic_set(&perf_stats.inbound_thin_tl_runs_resched, 0);
3717 atomic_set(&perf_stats.siga_outs, 0);
3718 atomic_set(&perf_stats.siga_ins, 0);
3719 atomic_set(&perf_stats.siga_syncs, 0);
3720 atomic_set(&perf_stats.pcis, 0);
3721 atomic_set(&perf_stats.thinints, 0);
3722 atomic_set(&perf_stats.fast_reqs, 0);
3723 atomic_set(&perf_stats.outbound_cnt, 0);
3724 atomic_set(&perf_stats.inbound_cnt, 0);
3725 #endif /* CONFIG_64BIT */
3728 QDIO_PRINT_WARN("QDIO performance_stats: write 0 or 1 to this file!\n");
3734 static BUS_ATTR(qdio_performance_stats, 0644, qdio_performance_stats_show,
3735 qdio_performance_stats_store);
3738 tiqdio_register_thinints(void)
3741 register_thinint_result=
3742 s390_register_adapter_interrupt(&tiqdio_thinint_handler);
3743 if (register_thinint_result) {
3744 sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff));
3745 QDIO_DBF_TEXT0(0,setup,dbf_text);
3746 QDIO_PRINT_ERR("failed to register adapter handler " \
3747 "(rc=%i).\nAdapter interrupts might " \
3748 "not work. Continuing.\n",
3749 register_thinint_result);
3754 tiqdio_unregister_thinints(void)
3756 if (!register_thinint_result)
3757 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler);
3761 qdio_get_qdio_memory(void)
3764 indicator_used[0]=1;
3766 for (i=1;i<INDICATORS_PER_CACHELINE;i++)
3767 indicator_used[i]=0;
3768 indicators = kzalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
3776 qdio_release_qdio_memory(void)
3783 qdio_unregister_dbf_views(void)
3786 debug_unregister(qdio_dbf_setup);
3788 debug_unregister(qdio_dbf_sbal);
3790 debug_unregister(qdio_dbf_sense);
3792 debug_unregister(qdio_dbf_trace);
3793 #ifdef CONFIG_QDIO_DEBUG
3794 if (qdio_dbf_slsb_out)
3795 debug_unregister(qdio_dbf_slsb_out);
3796 if (qdio_dbf_slsb_in)
3797 debug_unregister(qdio_dbf_slsb_in);
3798 #endif /* CONFIG_QDIO_DEBUG */
3802 qdio_register_dbf_views(void)
3804 qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
3805 QDIO_DBF_SETUP_PAGES,
3806 QDIO_DBF_SETUP_NR_AREAS,
3807 QDIO_DBF_SETUP_LEN);
3808 if (!qdio_dbf_setup)
3810 debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view);
3811 debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
3813 qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
3814 QDIO_DBF_SBAL_PAGES,
3815 QDIO_DBF_SBAL_NR_AREAS,
3820 debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view);
3821 debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
3823 qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
3824 QDIO_DBF_SENSE_PAGES,
3825 QDIO_DBF_SENSE_NR_AREAS,
3826 QDIO_DBF_SENSE_LEN);
3827 if (!qdio_dbf_sense)
3830 debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view);
3831 debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
3833 qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
3834 QDIO_DBF_TRACE_PAGES,
3835 QDIO_DBF_TRACE_NR_AREAS,
3836 QDIO_DBF_TRACE_LEN);
3837 if (!qdio_dbf_trace)
3840 debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view);
3841 debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL);
3843 #ifdef CONFIG_QDIO_DEBUG
3844 qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
3845 QDIO_DBF_SLSB_OUT_PAGES,
3846 QDIO_DBF_SLSB_OUT_NR_AREAS,
3847 QDIO_DBF_SLSB_OUT_LEN);
3848 if (!qdio_dbf_slsb_out)
3850 debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view);
3851 debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
3853 qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
3854 QDIO_DBF_SLSB_IN_PAGES,
3855 QDIO_DBF_SLSB_IN_NR_AREAS,
3856 QDIO_DBF_SLSB_IN_LEN);
3857 if (!qdio_dbf_slsb_in)
3859 debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view);
3860 debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL);
3861 #endif /* CONFIG_QDIO_DEBUG */
3864 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3865 qdio_unregister_dbf_views();
3869 static void *qdio_mempool_alloc(gfp_t gfp_mask, void *size)
3871 return (void *) get_zeroed_page(gfp_mask|GFP_DMA);
3874 static void qdio_mempool_free(void *element, void *size)
3876 free_page((unsigned long) element);
3885 printk("qdio: loading %s\n",version);
3887 res=qdio_get_qdio_memory();
3891 qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
3893 if (!qdio_q_cache) {
3894 qdio_release_qdio_memory();
3898 res = qdio_register_dbf_views();
3900 kmem_cache_destroy(qdio_q_cache);
3901 qdio_release_qdio_memory();
3905 QDIO_DBF_TEXT0(0,setup,"initQDIO");
3906 res = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
3908 memset((void*)&perf_stats,0,sizeof(perf_stats));
3909 QDIO_DBF_TEXT0(0,setup,"perfstat");
3911 QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
3913 qdio_add_procfs_entry();
3915 qdio_mempool_scssc = mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS,
3917 qdio_mempool_free, NULL);
3919 if (tiqdio_check_chsc_availability())
3920 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3922 tiqdio_register_thinints();
3930 tiqdio_unregister_thinints();
3931 qdio_remove_procfs_entry();
3932 qdio_release_qdio_memory();
3933 qdio_unregister_dbf_views();
3934 mempool_destroy(qdio_mempool_scssc);
3935 kmem_cache_destroy(qdio_q_cache);
3936 bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
3937 printk("qdio: %s: module removed\n",version);
3940 module_init(init_QDIO);
3941 module_exit(cleanup_QDIO);
3943 EXPORT_SYMBOL(qdio_allocate);
3944 EXPORT_SYMBOL(qdio_establish);
3945 EXPORT_SYMBOL(qdio_initialize);
3946 EXPORT_SYMBOL(qdio_activate);
3947 EXPORT_SYMBOL(do_QDIO);
3948 EXPORT_SYMBOL(qdio_shutdown);
3949 EXPORT_SYMBOL(qdio_free);
3950 EXPORT_SYMBOL(qdio_cleanup);
3951 EXPORT_SYMBOL(qdio_synchronize);