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);
199 QDIO_DBF_TEXT5(1,trace,"eqAGAIN");
203 QDIO_DBF_TEXT2(1,trace,"eqberr");
204 sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt, *cnt, ccq, q_no);
205 QDIO_DBF_TEXT2(1,trace,dbf_text);
206 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
207 QDIO_STATUS_LOOK_FOR_ERROR,
208 0, 0, 0, -1, -1, q->int_parm);
211 return (tmp_cnt - *cnt);
214 /* SQBS: set buffer states */
216 qdio_do_sqbs(struct qdio_q *q, unsigned char state,
217 unsigned int *start, unsigned int *cnt)
219 struct qdio_irq *irq;
220 unsigned int tmp_cnt, q_no, ccq;
226 irq = (struct qdio_irq*)q->irq_ptr;
229 q_no += irq->no_input_qs;
231 ccq = do_sqbs(irq->sch_token, state, q_no, start, cnt);
232 rc = qdio_check_ccq(q, ccq);
234 QDIO_DBF_TEXT5(1,trace,"sqAGAIN");
238 QDIO_DBF_TEXT3(1,trace,"sqberr");
239 sprintf(dbf_text,"%2x,%2x",tmp_cnt,*cnt);
240 QDIO_DBF_TEXT3(1,trace,dbf_text);
241 sprintf(dbf_text,"%d,%d",ccq,q_no);
242 QDIO_DBF_TEXT3(1,trace,dbf_text);
243 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
244 QDIO_STATUS_LOOK_FOR_ERROR,
245 0, 0, 0, -1, -1, q->int_parm);
248 return (tmp_cnt - *cnt);
252 qdio_set_slsb(struct qdio_q *q, unsigned int *bufno,
253 unsigned char state, unsigned int *count)
256 struct qdio_irq *irq;
258 irq = (struct qdio_irq*)q->irq_ptr;
259 if (!irq->is_qebsm) {
260 slsb = (char *)&q->slsb.acc.val[(*bufno)];
264 return qdio_do_sqbs(q, state, bufno, count);
267 #ifdef CONFIG_QDIO_DEBUG
269 qdio_trace_slsb(struct qdio_q *q)
271 if (q->queue_type==QDIO_TRACE_QTYPE) {
273 QDIO_DBF_HEX2(0,slsb_in,&q->slsb,
274 QDIO_MAX_BUFFERS_PER_Q);
276 QDIO_DBF_HEX2(0,slsb_out,&q->slsb,
277 QDIO_MAX_BUFFERS_PER_Q);
283 set_slsb(struct qdio_q *q, unsigned int *bufno,
284 unsigned char state, unsigned int *count)
287 #ifdef CONFIG_QDIO_DEBUG
290 rc = qdio_set_slsb(q, bufno, state, count);
291 #ifdef CONFIG_QDIO_DEBUG
297 qdio_siga_sync(struct qdio_q *q, unsigned int gpr2,
302 QDIO_DBF_TEXT4(0,trace,"sigasync");
303 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
305 qdio_perf_stat_inc(&perf_stats.siga_syncs);
307 cc = do_siga_sync(q->schid, gpr2, gpr3);
309 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
315 qdio_siga_sync_q(struct qdio_q *q)
318 return qdio_siga_sync(q, 0, q->mask);
319 return qdio_siga_sync(q, q->mask, 0);
323 __do_siga_output(struct qdio_q *q, unsigned int *busy_bit)
325 struct qdio_irq *irq;
329 irq = (struct qdio_irq *) q->irq_ptr;
331 schid = *((u32 *)&q->schid);
333 schid = irq->sch_token;
336 return do_siga_output(schid, q->mask, busy_bit, fc);
340 * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
341 * an access exception
344 qdio_siga_output(struct qdio_q *q)
350 qdio_perf_stat_inc(&perf_stats.siga_outs);
352 QDIO_DBF_TEXT4(0,trace,"sigaout");
353 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
356 cc = __do_siga_output(q, &busy_bit);
357 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
358 if ((cc==2) && (busy_bit) && (q->is_iqdio_q)) {
361 if ((NOW-start_time)>QDIO_BUSY_BIT_PATIENCE)
367 if ((cc==2) && (busy_bit))
368 cc |= QDIO_SIGA_ERROR_B_BIT_SET;
371 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
377 qdio_siga_input(struct qdio_q *q)
381 QDIO_DBF_TEXT4(0,trace,"sigain");
382 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
384 qdio_perf_stat_inc(&perf_stats.siga_ins);
386 cc = do_siga_input(q->schid, q->mask);
389 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
394 /* locked by the locks in qdio_activate and qdio_cleanup */
396 qdio_get_indicator(void)
400 for (i=1;i<INDICATORS_PER_CACHELINE;i++)
401 if (!indicator_used[i]) {
405 atomic_inc(&spare_indicator_usecount);
406 return (__u32 * volatile) &spare_indicator;
409 /* locked by the locks in qdio_activate and qdio_cleanup */
411 qdio_put_indicator(__u32 *addr)
415 if ( (addr) && (addr!=&spare_indicator) ) {
419 if (addr == &spare_indicator)
420 atomic_dec(&spare_indicator_usecount);
424 tiqdio_clear_summary_bit(__u32 *location)
426 QDIO_DBF_TEXT5(0,trace,"clrsummb");
427 QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
433 tiqdio_set_summary_bit(__u32 *location)
435 QDIO_DBF_TEXT5(0,trace,"setsummb");
436 QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
442 tiqdio_sched_tl(void)
444 tasklet_hi_schedule(&tiqdio_tasklet);
448 qdio_mark_tiq(struct qdio_q *q)
452 QDIO_DBF_TEXT4(0,trace,"mark iq");
453 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
455 spin_lock_irqsave(&ttiq_list_lock,flags);
456 if (unlikely(atomic_read(&q->is_in_shutdown)))
462 if ((q->list_prev) || (q->list_next))
470 q->list_next=tiq_list;
471 q->list_prev=tiq_list->list_prev;
472 tiq_list->list_prev->list_next=q;
473 tiq_list->list_prev=q;
475 spin_unlock_irqrestore(&ttiq_list_lock,flags);
477 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
481 spin_unlock_irqrestore(&ttiq_list_lock,flags);
486 qdio_mark_q(struct qdio_q *q)
488 QDIO_DBF_TEXT4(0,trace,"mark q");
489 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
491 if (unlikely(atomic_read(&q->is_in_shutdown)))
494 tasklet_schedule(&q->tasklet);
498 qdio_stop_polling(struct qdio_q *q)
500 #ifdef QDIO_USE_PROCESSING_STATE
501 unsigned int tmp, gsf, count = 1;
502 unsigned char state = 0;
503 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
505 if (!atomic_xchg(&q->polling,0))
508 QDIO_DBF_TEXT4(0,trace,"stoppoll");
509 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
511 /* show the card that we are not polling anymore */
515 tmp = gsf = GET_SAVED_FRONTIER(q);
516 tmp = ((tmp + QDIO_MAX_BUFFERS_PER_Q-1) & (QDIO_MAX_BUFFERS_PER_Q-1) );
517 set_slsb(q, &tmp, SLSB_P_INPUT_NOT_INIT, &count);
520 * we don't issue this SYNC_MEMORY, as we trust Rick T and
521 * moreover will not use the PROCESSING state under VM, so
522 * q->polling was 0 anyway
527 qdio_do_eqbs(q, &state, &gsf, &count);
529 state = q->slsb.acc.val[gsf];
530 if (state != SLSB_P_INPUT_PRIMED)
533 * set our summary bit again, as otherwise there is a
534 * small window we can miss between resetting it and
535 * checking for PRIMED state
538 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
541 #else /* QDIO_USE_PROCESSING_STATE */
543 #endif /* QDIO_USE_PROCESSING_STATE */
547 * see the comment in do_QDIO and before qdio_reserve_q about the
548 * sophisticated locking outside of unmark_q, so that we don't need to
549 * disable the interrupts :-)
552 qdio_unmark_q(struct qdio_q *q)
556 QDIO_DBF_TEXT4(0,trace,"unmark q");
557 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
559 if ((!q->list_prev)||(!q->list_next))
562 if ((q->is_thinint_q)&&(q->is_input_q)) {
564 spin_lock_irqsave(&ttiq_list_lock,flags);
565 /* in case cleanup has done this already and simultanously
566 * qdio_unmark_q is called from the interrupt handler, we've
567 * got to check this in this specific case again */
568 if ((!q->list_prev)||(!q->list_next))
570 if (q->list_next==q) {
571 /* q was the only interesting q */
576 q->list_next->list_prev=q->list_prev;
577 q->list_prev->list_next=q->list_next;
578 tiq_list=q->list_next;
583 spin_unlock_irqrestore(&ttiq_list_lock,flags);
587 static inline unsigned long
588 tiqdio_clear_global_summary(void)
592 QDIO_DBF_TEXT5(0,trace,"clrglobl");
594 time = do_clear_global_summary();
596 QDIO_DBF_HEX5(0,trace,&time,sizeof(unsigned long));
602 /************************* OUTBOUND ROUTINES *******************************/
604 qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q *q)
606 struct qdio_irq *irq;
608 unsigned int cnt, count, ftc;
610 irq = (struct qdio_irq *) q->irq_ptr;
611 if ((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis))
614 ftc = q->first_to_check;
615 count = qdio_min(atomic_read(&q->number_of_buffers_used),
616 (QDIO_MAX_BUFFERS_PER_Q-1));
618 return q->first_to_check;
619 cnt = qdio_do_eqbs(q, &state, &ftc, &count);
621 return q->first_to_check;
623 case SLSB_P_OUTPUT_ERROR:
624 QDIO_DBF_TEXT3(0,trace,"outperr");
625 atomic_sub(cnt , &q->number_of_buffers_used);
627 q->error_status_flags |=
628 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
629 q->qdio_error = SLSB_P_OUTPUT_ERROR;
630 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
631 q->first_to_check = ftc;
633 case SLSB_P_OUTPUT_EMPTY:
634 QDIO_DBF_TEXT5(0,trace,"outpempt");
635 atomic_sub(cnt, &q->number_of_buffers_used);
636 q->first_to_check = ftc;
638 case SLSB_CU_OUTPUT_PRIMED:
639 /* all buffers primed */
640 QDIO_DBF_TEXT5(0,trace,"outpprim");
645 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
646 return q->first_to_check;
650 qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q *q)
652 struct qdio_irq *irq;
654 int tmp, ftc, count, cnt;
658 irq = (struct qdio_irq *) q->irq_ptr;
659 ftc = q->first_to_check;
660 count = qdio_min(atomic_read(&q->number_of_buffers_used),
661 (QDIO_MAX_BUFFERS_PER_Q-1));
663 return q->first_to_check;
664 cnt = qdio_do_eqbs(q, &state, &ftc, &count);
666 return q->first_to_check;
668 case SLSB_P_INPUT_ERROR :
669 #ifdef CONFIG_QDIO_DEBUG
670 QDIO_DBF_TEXT3(1,trace,"inperr");
671 sprintf(dbf_text,"%2x,%2x",ftc,count);
672 QDIO_DBF_TEXT3(1,trace,dbf_text);
673 #endif /* CONFIG_QDIO_DEBUG */
675 q->error_status_flags |=
676 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
677 q->qdio_error = SLSB_P_INPUT_ERROR;
678 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
679 atomic_sub(cnt, &q->number_of_buffers_used);
680 q->first_to_check = ftc;
682 case SLSB_P_INPUT_PRIMED :
683 QDIO_DBF_TEXT3(0,trace,"inptprim");
684 sprintf(dbf_text,"%2x,%2x",ftc,count);
685 QDIO_DBF_TEXT3(1,trace,dbf_text);
687 ftc = q->first_to_check;
688 #ifdef QDIO_USE_PROCESSING_STATE
691 tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
696 tmp += set_slsb(q, &ftc,
697 SLSB_P_INPUT_PROCESSING, &cnt);
698 atomic_set(&q->polling, 1);
700 tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
702 atomic_sub(tmp, &q->number_of_buffers_used);
703 q->first_to_check = ftc;
705 case SLSB_CU_INPUT_EMPTY:
706 case SLSB_P_INPUT_NOT_INIT:
707 case SLSB_P_INPUT_PROCESSING:
708 QDIO_DBF_TEXT5(0,trace,"inpnipro");
713 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
714 return q->first_to_check;
718 qdio_get_outbound_buffer_frontier(struct qdio_q *q)
720 struct qdio_irq *irq;
722 unsigned int count = 1;
723 int first_not_to_check, f, f_mod_no;
726 QDIO_DBF_TEXT4(0,trace,"getobfro");
727 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
729 irq = (struct qdio_irq *) q->irq_ptr;
731 return qdio_qebsm_get_outbound_buffer_frontier(q);
733 slsb=&q->slsb.acc.val[0];
734 f_mod_no=f=q->first_to_check;
736 * f points to already processed elements, so f+no_used is correct...
737 * ... but: we don't check 128 buffers, as otherwise
738 * qdio_has_outbound_q_moved would return 0
740 first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
741 (QDIO_MAX_BUFFERS_PER_Q-1));
743 if ((!q->is_iqdio_q)&&(!q->hydra_gives_outbound_pcis))
747 if (f==first_not_to_check)
750 switch(slsb[f_mod_no]) {
752 /* the adapter has not fetched the output yet */
753 case SLSB_CU_OUTPUT_PRIMED:
754 QDIO_DBF_TEXT5(0,trace,"outpprim");
757 /* the adapter got it */
758 case SLSB_P_OUTPUT_EMPTY:
759 atomic_dec(&q->number_of_buffers_used);
761 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
762 QDIO_DBF_TEXT5(0,trace,"outpempt");
765 case SLSB_P_OUTPUT_ERROR:
766 QDIO_DBF_TEXT3(0,trace,"outperr");
767 sprintf(dbf_text,"%x-%x-%x",f_mod_no,
768 q->sbal[f_mod_no]->element[14].sbalf.value,
769 q->sbal[f_mod_no]->element[15].sbalf.value);
770 QDIO_DBF_TEXT3(1,trace,dbf_text);
771 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
773 /* kind of process the buffer */
774 set_slsb(q, &f_mod_no, SLSB_P_OUTPUT_NOT_INIT, &count);
777 * we increment the frontier, as this buffer
778 * was processed obviously
780 atomic_dec(&q->number_of_buffers_used);
781 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
784 q->error_status_flags|=
785 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
786 q->qdio_error=SLSB_P_OUTPUT_ERROR;
787 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
793 QDIO_DBF_TEXT5(0,trace,"outpni");
796 return (q->first_to_check=f_mod_no);
799 /* all buffers are processed */
801 qdio_is_outbound_q_done(struct qdio_q *q)
804 #ifdef CONFIG_QDIO_DEBUG
808 no_used=atomic_read(&q->number_of_buffers_used);
810 #ifdef CONFIG_QDIO_DEBUG
812 sprintf(dbf_text,"oqisnt%02x",no_used);
813 QDIO_DBF_TEXT4(0,trace,dbf_text);
815 QDIO_DBF_TEXT4(0,trace,"oqisdone");
817 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
818 #endif /* CONFIG_QDIO_DEBUG */
823 qdio_has_outbound_q_moved(struct qdio_q *q)
827 i=qdio_get_outbound_buffer_frontier(q);
829 if ( (i!=GET_SAVED_FRONTIER(q)) ||
830 (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
832 QDIO_DBF_TEXT4(0,trace,"oqhasmvd");
833 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
836 QDIO_DBF_TEXT4(0,trace,"oqhsntmv");
837 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
843 qdio_kick_outbound_q(struct qdio_q *q)
846 #ifdef CONFIG_QDIO_DEBUG
849 QDIO_DBF_TEXT4(0,trace,"kickoutq");
850 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
851 #endif /* CONFIG_QDIO_DEBUG */
856 /* here's the story with cc=2 and busy bit set (thanks, Rick):
857 * VM's CP could present us cc=2 and busy bit set on SIGA-write
858 * during reconfiguration of their Guest LAN (only in HIPERS mode,
859 * QDIO mode is asynchronous -- cc=2 and busy bit there will take
860 * the queues down immediately; and not being under VM we have a
861 * problem on cc=2 and busy bit set right away).
863 * Therefore qdio_siga_output will try for a short time constantly,
864 * if such a condition occurs. If it doesn't change, it will
865 * increase the busy_siga_counter and save the timestamp, and
866 * schedule the queue for later processing (via mark_q, using the
867 * queue tasklet). __qdio_outbound_processing will check out the
868 * counter. If non-zero, it will call qdio_kick_outbound_q as often
869 * as the value of the counter. This will attempt further SIGA
870 * instructions. For each successful SIGA, the counter is
871 * decreased, for failing SIGAs the counter remains the same, after
873 * After some time of no movement, qdio_kick_outbound_q will
874 * finally fail and reflect corresponding error codes to call
875 * the upper layer module and have it take the queues down.
877 * Note that this is a change from the original HiperSockets design
878 * (saying cc=2 and busy bit means take the queues down), but in
879 * these days Guest LAN didn't exist... excessive cc=2 with busy bit
880 * conditions will still take the queues down, but the threshold is
881 * higher due to the Guest LAN environment.
885 result=qdio_siga_output(q);
889 /* went smooth this time, reset timestamp */
890 #ifdef CONFIG_QDIO_DEBUG
891 QDIO_DBF_TEXT3(0,trace,"cc2reslv");
892 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
893 atomic_read(&q->busy_siga_counter));
894 QDIO_DBF_TEXT3(0,trace,dbf_text);
895 #endif /* CONFIG_QDIO_DEBUG */
896 q->timing.busy_start=0;
898 case (2|QDIO_SIGA_ERROR_B_BIT_SET):
899 /* cc=2 and busy bit: */
900 atomic_inc(&q->busy_siga_counter);
902 /* if the last siga was successful, save
904 if (!q->timing.busy_start)
905 q->timing.busy_start=NOW;
907 /* if we're in time, don't touch error_status_flags
909 if (NOW-q->timing.busy_start<QDIO_BUSY_BIT_GIVE_UP) {
913 QDIO_DBF_TEXT2(0,trace,"cc2REPRT");
914 #ifdef CONFIG_QDIO_DEBUG
915 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
916 atomic_read(&q->busy_siga_counter));
917 QDIO_DBF_TEXT3(0,trace,dbf_text);
918 #endif /* CONFIG_QDIO_DEBUG */
919 /* else fallthrough and report error */
921 /* for plain cc=1, 2 or 3: */
923 q->error_status_flags|=
924 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
925 q->error_status_flags|=
926 QDIO_STATUS_LOOK_FOR_ERROR;
927 q->siga_error=result;
932 qdio_kick_outbound_handler(struct qdio_q *q)
934 int start, end, real_end, count;
935 #ifdef CONFIG_QDIO_DEBUG
939 start = q->first_element_to_kick;
940 /* last_move_ftc was just updated */
941 real_end = GET_SAVED_FRONTIER(q);
942 end = (real_end+QDIO_MAX_BUFFERS_PER_Q-1)&
943 (QDIO_MAX_BUFFERS_PER_Q-1);
944 count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)&
945 (QDIO_MAX_BUFFERS_PER_Q-1);
947 #ifdef CONFIG_QDIO_DEBUG
948 QDIO_DBF_TEXT4(0,trace,"kickouth");
949 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
951 sprintf(dbf_text,"s=%2xc=%2x",start,count);
952 QDIO_DBF_TEXT4(0,trace,dbf_text);
953 #endif /* CONFIG_QDIO_DEBUG */
955 if (q->state==QDIO_IRQ_STATE_ACTIVE)
956 q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT|
957 q->error_status_flags,
958 q->qdio_error,q->siga_error,q->q_no,start,count,
961 /* for the next time: */
962 q->first_element_to_kick=real_end;
965 q->error_status_flags=0;
969 __qdio_outbound_processing(struct qdio_q *q)
973 QDIO_DBF_TEXT4(0,trace,"qoutproc");
974 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
976 if (unlikely(qdio_reserve_q(q))) {
978 qdio_perf_stat_inc(&perf_stats.outbound_tl_runs_resched);
979 /* as we're sissies, we'll check next time */
980 if (likely(!atomic_read(&q->is_in_shutdown))) {
982 QDIO_DBF_TEXT4(0,trace,"busy,agn");
986 qdio_perf_stat_inc(&perf_stats.outbound_tl_runs);
987 qdio_perf_stat_inc(&perf_stats.tl_runs);
989 /* see comment in qdio_kick_outbound_q */
990 siga_attempts=atomic_read(&q->busy_siga_counter);
991 while (siga_attempts) {
992 atomic_dec(&q->busy_siga_counter);
993 qdio_kick_outbound_q(q);
997 if (qdio_has_outbound_q_moved(q))
998 qdio_kick_outbound_handler(q);
1000 if (q->queue_type == QDIO_ZFCP_QFMT) {
1001 if ((!q->hydra_gives_outbound_pcis) &&
1002 (!qdio_is_outbound_q_done(q)))
1005 else if (((!q->is_iqdio_q) && (!q->is_pci_out)) ||
1006 (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH)) {
1008 * make sure buffer switch from PRIMED to EMPTY is noticed
1009 * and outbound_handler is called
1011 if (qdio_is_outbound_q_done(q)) {
1012 del_timer(&q->timer);
1014 if (!timer_pending(&q->timer))
1015 mod_timer(&q->timer, jiffies +
1016 QDIO_FORCE_CHECK_TIMEOUT);
1024 qdio_outbound_processing(struct qdio_q *q)
1026 __qdio_outbound_processing(q);
1029 /************************* INBOUND ROUTINES *******************************/
1033 qdio_get_inbound_buffer_frontier(struct qdio_q *q)
1035 struct qdio_irq *irq;
1037 volatile char *slsb;
1038 unsigned int count = 1;
1039 int first_not_to_check;
1040 #ifdef CONFIG_QDIO_DEBUG
1042 #endif /* CONFIG_QDIO_DEBUG */
1043 #ifdef QDIO_USE_PROCESSING_STATE
1044 int last_position=-1;
1045 #endif /* QDIO_USE_PROCESSING_STATE */
1047 QDIO_DBF_TEXT4(0,trace,"getibfro");
1048 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1050 irq = (struct qdio_irq *) q->irq_ptr;
1052 return qdio_qebsm_get_inbound_buffer_frontier(q);
1054 slsb=&q->slsb.acc.val[0];
1055 f_mod_no=f=q->first_to_check;
1057 * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1060 first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
1061 (QDIO_MAX_BUFFERS_PER_Q-1));
1064 * we don't use this one, as a PCI or we after a thin interrupt
1065 * will sync the queues
1070 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
1071 if (f==first_not_to_check)
1073 switch (slsb[f_mod_no]) {
1075 /* CU_EMPTY means frontier is reached */
1076 case SLSB_CU_INPUT_EMPTY:
1077 QDIO_DBF_TEXT5(0,trace,"inptempt");
1080 /* P_PRIMED means set slsb to P_PROCESSING and move on */
1081 case SLSB_P_INPUT_PRIMED:
1082 QDIO_DBF_TEXT5(0,trace,"inptprim");
1084 #ifdef QDIO_USE_PROCESSING_STATE
1086 * as soon as running under VM, polling the input queues will
1087 * kill VM in terms of CP overhead
1090 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1092 /* set the previous buffer to NOT_INIT. The current
1093 * buffer will be set to PROCESSING at the end of
1094 * this function to avoid further interrupts. */
1095 if (last_position>=0)
1096 set_slsb(q, &last_position,
1097 SLSB_P_INPUT_NOT_INIT, &count);
1098 atomic_set(&q->polling,1);
1099 last_position=f_mod_no;
1101 #else /* QDIO_USE_PROCESSING_STATE */
1102 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1103 #endif /* QDIO_USE_PROCESSING_STATE */
1105 * not needed, as the inbound queue will be synced on the next
1106 * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1110 atomic_dec(&q->number_of_buffers_used);
1113 case SLSB_P_INPUT_NOT_INIT:
1114 case SLSB_P_INPUT_PROCESSING:
1115 QDIO_DBF_TEXT5(0,trace,"inpnipro");
1118 /* P_ERROR means frontier is reached, break and report error */
1119 case SLSB_P_INPUT_ERROR:
1120 #ifdef CONFIG_QDIO_DEBUG
1121 sprintf(dbf_text,"inperr%2x",f_mod_no);
1122 QDIO_DBF_TEXT3(1,trace,dbf_text);
1123 #endif /* CONFIG_QDIO_DEBUG */
1124 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
1126 /* kind of process the buffer */
1127 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1130 q->error_status_flags|=
1131 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
1132 q->qdio_error=SLSB_P_INPUT_ERROR;
1133 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
1135 /* we increment the frontier, as this buffer
1136 * was processed obviously */
1137 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1138 atomic_dec(&q->number_of_buffers_used);
1140 #ifdef QDIO_USE_PROCESSING_STATE
1142 #endif /* QDIO_USE_PROCESSING_STATE */
1146 /* everything else means frontier not changed (HALTED or so) */
1151 q->first_to_check=f_mod_no;
1153 #ifdef QDIO_USE_PROCESSING_STATE
1154 if (last_position>=0)
1155 set_slsb(q, &last_position, SLSB_P_INPUT_PROCESSING, &count);
1156 #endif /* QDIO_USE_PROCESSING_STATE */
1158 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
1160 return q->first_to_check;
1164 qdio_has_inbound_q_moved(struct qdio_q *q)
1168 i=qdio_get_inbound_buffer_frontier(q);
1169 if ( (i!=GET_SAVED_FRONTIER(q)) ||
1170 (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
1172 if ((!q->siga_sync)&&(!q->hydra_gives_outbound_pcis))
1175 QDIO_DBF_TEXT4(0,trace,"inhasmvd");
1176 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1179 QDIO_DBF_TEXT4(0,trace,"inhsntmv");
1180 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1185 /* means, no more buffers to be filled */
1187 tiqdio_is_inbound_q_done(struct qdio_q *q)
1190 unsigned int start_buf, count;
1191 unsigned char state = 0;
1192 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1194 #ifdef CONFIG_QDIO_DEBUG
1198 no_used=atomic_read(&q->number_of_buffers_used);
1200 /* propagate the change from 82 to 80 through VM */
1203 #ifdef CONFIG_QDIO_DEBUG
1205 sprintf(dbf_text,"iqisnt%02x",no_used);
1206 QDIO_DBF_TEXT4(0,trace,dbf_text);
1208 QDIO_DBF_TEXT4(0,trace,"iniqisdo");
1210 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1211 #endif /* CONFIG_QDIO_DEBUG */
1215 if (!q->siga_sync && !irq->is_qebsm)
1216 /* we'll check for more primed buffers in qeth_stop_polling */
1218 if (irq->is_qebsm) {
1220 start_buf = q->first_to_check;
1221 qdio_do_eqbs(q, &state, &start_buf, &count);
1223 state = q->slsb.acc.val[q->first_to_check];
1224 if (state != SLSB_P_INPUT_PRIMED)
1226 * nothing more to do, if next buffer is not PRIMED.
1227 * note that we did a SYNC_MEMORY before, that there
1228 * has been a sychnronization.
1229 * we will return 0 below, as there is nothing to do
1230 * (stop_polling not necessary, as we have not been
1231 * using the PROCESSING state
1236 * ok, the next input buffer is primed. that means, that device state
1237 * change indicator and adapter local summary are set, so we will find
1239 * we will return 0 below, as there is nothing to do, except scheduling
1240 * ourselves for the next time.
1242 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1248 qdio_is_inbound_q_done(struct qdio_q *q)
1251 unsigned int start_buf, count;
1252 unsigned char state = 0;
1253 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1255 #ifdef CONFIG_QDIO_DEBUG
1259 no_used=atomic_read(&q->number_of_buffers_used);
1262 * we need that one for synchronization with the adapter, as it
1263 * does a kind of PCI avoidance
1268 QDIO_DBF_TEXT4(0,trace,"inqisdnA");
1269 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1272 if (irq->is_qebsm) {
1274 start_buf = q->first_to_check;
1275 qdio_do_eqbs(q, &state, &start_buf, &count);
1277 state = q->slsb.acc.val[q->first_to_check];
1278 if (state == SLSB_P_INPUT_PRIMED) {
1279 /* we got something to do */
1280 QDIO_DBF_TEXT4(0,trace,"inqisntA");
1281 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1285 /* on VM, we don't poll, so the q is always done here */
1288 if (q->hydra_gives_outbound_pcis)
1292 * at this point we know, that inbound first_to_check
1293 * has (probably) not moved (see qdio_inbound_processing)
1295 if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) {
1296 #ifdef CONFIG_QDIO_DEBUG
1297 QDIO_DBF_TEXT4(0,trace,"inqisdon");
1298 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1299 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1300 QDIO_DBF_TEXT4(0,trace,dbf_text);
1301 #endif /* CONFIG_QDIO_DEBUG */
1304 #ifdef CONFIG_QDIO_DEBUG
1305 QDIO_DBF_TEXT4(0,trace,"inqisntd");
1306 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1307 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1308 QDIO_DBF_TEXT4(0,trace,dbf_text);
1309 #endif /* CONFIG_QDIO_DEBUG */
1315 qdio_kick_inbound_handler(struct qdio_q *q)
1317 int count, start, end, real_end, i;
1318 #ifdef CONFIG_QDIO_DEBUG
1322 QDIO_DBF_TEXT4(0,trace,"kickinh");
1323 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1325 start=q->first_element_to_kick;
1326 real_end=q->first_to_check;
1327 end=(real_end+QDIO_MAX_BUFFERS_PER_Q-1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1335 i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1338 #ifdef CONFIG_QDIO_DEBUG
1339 sprintf(dbf_text,"s=%2xc=%2x",start,count);
1340 QDIO_DBF_TEXT4(0,trace,dbf_text);
1341 #endif /* CONFIG_QDIO_DEBUG */
1343 if (likely(q->state==QDIO_IRQ_STATE_ACTIVE))
1345 QDIO_STATUS_INBOUND_INT|q->error_status_flags,
1346 q->qdio_error,q->siga_error,q->q_no,start,count,
1349 /* for the next time: */
1350 q->first_element_to_kick=real_end;
1353 q->error_status_flags=0;
1355 qdio_perf_stat_inc(&perf_stats.inbound_cnt);
1359 __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
1361 struct qdio_irq *irq_ptr;
1365 QDIO_DBF_TEXT4(0,trace,"iqinproc");
1366 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1369 * we first want to reserve the q, so that we know, that we don't
1370 * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1373 if (unlikely(qdio_reserve_q(q))) {
1375 qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs_resched);
1377 * as we might just be about to stop polling, we make
1378 * sure that we check again at least once more
1383 qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs);
1384 if (unlikely(atomic_read(&q->is_in_shutdown))) {
1390 * we reset spare_ind_was_set, when the queue does not use the
1393 if (spare_ind_was_set)
1394 spare_ind_was_set = (q->dev_st_chg_ind == &spare_indicator);
1396 if (!(*(q->dev_st_chg_ind)) && !spare_ind_was_set)
1399 * q->dev_st_chg_ind is the indicator, be it shared or not.
1400 * only clear it, if indicator is non-shared
1402 if (!spare_ind_was_set)
1403 tiqdio_clear_summary_bit((__u32*)q->dev_st_chg_ind);
1405 if (q->hydra_gives_outbound_pcis) {
1406 if (!q->siga_sync_done_on_thinints) {
1408 } else if ((!q->siga_sync_done_on_outb_tis)&&
1409 (q->hydra_gives_outbound_pcis)) {
1410 SYNC_MEMORY_ALL_OUTB;
1416 * maybe we have to do work on our outbound queues... at least
1417 * we have to check the outbound-int-capable thinint-capable
1420 if (q->hydra_gives_outbound_pcis) {
1421 irq_ptr = (struct qdio_irq*)q->irq_ptr;
1422 for (i=0;i<irq_ptr->no_output_qs;i++) {
1423 oq = irq_ptr->output_qs[i];
1424 if (!qdio_is_outbound_q_done(oq)) {
1425 qdio_perf_stat_dec(&perf_stats.tl_runs);
1426 __qdio_outbound_processing(oq);
1431 if (!qdio_has_inbound_q_moved(q))
1434 qdio_kick_inbound_handler(q);
1435 if (tiqdio_is_inbound_q_done(q))
1436 if (!qdio_stop_polling(q)) {
1438 * we set the flags to get into the stuff next time,
1439 * see also comment in qdio_stop_polling
1441 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1449 tiqdio_inbound_processing(struct qdio_q *q)
1451 __tiqdio_inbound_processing(q, atomic_read(&spare_indicator_usecount));
1455 __qdio_inbound_processing(struct qdio_q *q)
1459 QDIO_DBF_TEXT4(0,trace,"qinproc");
1460 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1462 if (unlikely(qdio_reserve_q(q))) {
1464 qdio_perf_stat_inc(&perf_stats.inbound_tl_runs_resched);
1465 /* as we're sissies, we'll check next time */
1466 if (likely(!atomic_read(&q->is_in_shutdown))) {
1468 QDIO_DBF_TEXT4(0,trace,"busy,agn");
1472 qdio_perf_stat_inc(&perf_stats.inbound_tl_runs);
1473 qdio_perf_stat_inc(&perf_stats.tl_runs);
1476 if (qdio_has_inbound_q_moved(q)) {
1477 qdio_kick_inbound_handler(q);
1478 if (!qdio_stop_polling(q)) {
1480 if (q_laps<QDIO_Q_LAPS)
1485 if (!qdio_is_inbound_q_done(q))
1486 /* means poll time is not yet over */
1494 qdio_inbound_processing(struct qdio_q *q)
1496 __qdio_inbound_processing(q);
1499 /************************* MAIN ROUTINES *******************************/
1501 #ifdef QDIO_USE_PROCESSING_STATE
1503 tiqdio_reset_processing_state(struct qdio_q *q, int q_laps)
1511 * under VM, we have not used the PROCESSING state, so no
1512 * need to stop polling
1517 if (unlikely(qdio_reserve_q(q))) {
1519 qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs_resched);
1521 * as we might just be about to stop polling, we make
1522 * sure that we check again at least once more
1526 * sanity -- we'd get here without setting the
1529 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1533 if (qdio_stop_polling(q)) {
1537 if (q_laps<QDIO_Q_LAPS-1) {
1542 * we set the flags to get into the stuff
1543 * next time, see also comment in qdio_stop_polling
1545 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1551 #endif /* QDIO_USE_PROCESSING_STATE */
1554 tiqdio_inbound_checks(void)
1557 int spare_ind_was_set=0;
1558 #ifdef QDIO_USE_PROCESSING_STATE
1560 #endif /* QDIO_USE_PROCESSING_STATE */
1562 QDIO_DBF_TEXT4(0,trace,"iqdinbck");
1563 QDIO_DBF_TEXT5(0,trace,"iqlocsum");
1565 #ifdef QDIO_USE_PROCESSING_STATE
1567 #endif /* QDIO_USE_PROCESSING_STATE */
1569 /* when the spare indicator is used and set, save that and clear it */
1570 if ((atomic_read(&spare_indicator_usecount)) && spare_indicator) {
1571 spare_ind_was_set = 1;
1572 tiqdio_clear_summary_bit((__u32*)&spare_indicator);
1575 q=(struct qdio_q*)tiq_list;
1579 __tiqdio_inbound_processing(q, spare_ind_was_set);
1580 q=(struct qdio_q*)q->list_next;
1581 } while (q!=(struct qdio_q*)tiq_list);
1583 #ifdef QDIO_USE_PROCESSING_STATE
1584 q=(struct qdio_q*)tiq_list;
1588 ret = tiqdio_reset_processing_state(q, q_laps);
1595 q = (struct qdio_q*)q->list_next;
1601 } while (q!=(struct qdio_q*)tiq_list);
1602 #endif /* QDIO_USE_PROCESSING_STATE */
1606 tiqdio_tl(unsigned long data)
1608 QDIO_DBF_TEXT4(0,trace,"iqdio_tl");
1610 qdio_perf_stat_inc(&perf_stats.tl_runs);
1612 tiqdio_inbound_checks();
1615 /********************* GENERAL HELPER_ROUTINES ***********************/
1618 qdio_release_irq_memory(struct qdio_irq *irq_ptr)
1623 for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
1624 q = irq_ptr->input_qs[i];
1626 free_page((unsigned long) q->slib);
1627 kmem_cache_free(qdio_q_cache, q);
1629 q = irq_ptr->output_qs[i];
1631 free_page((unsigned long) q->slib);
1632 kmem_cache_free(qdio_q_cache, q);
1635 free_page((unsigned long) irq_ptr->qdr);
1636 free_page((unsigned long) irq_ptr);
1640 qdio_set_impl_params(struct qdio_irq *irq_ptr,
1641 unsigned int qib_param_field_format,
1642 /* pointer to 128 bytes or NULL, if no param field */
1643 unsigned char *qib_param_field,
1644 /* pointer to no_queues*128 words of data or NULL */
1645 unsigned int no_input_qs,
1646 unsigned int no_output_qs,
1647 unsigned long *input_slib_elements,
1648 unsigned long *output_slib_elements)
1655 irq_ptr->qib.pfmt=qib_param_field_format;
1656 if (qib_param_field)
1657 memcpy(irq_ptr->qib.parm,qib_param_field,
1658 QDIO_MAX_BUFFERS_PER_Q);
1660 if (input_slib_elements)
1661 for (i=0;i<no_input_qs;i++) {
1662 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1663 irq_ptr->input_qs[i]->slib->slibe[j].parms=
1664 input_slib_elements[
1665 i*QDIO_MAX_BUFFERS_PER_Q+j];
1667 if (output_slib_elements)
1668 for (i=0;i<no_output_qs;i++) {
1669 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1670 irq_ptr->output_qs[i]->slib->slibe[j].parms=
1671 output_slib_elements[
1672 i*QDIO_MAX_BUFFERS_PER_Q+j];
1677 qdio_alloc_qs(struct qdio_irq *irq_ptr,
1678 int no_input_qs, int no_output_qs)
1683 for (i = 0; i < no_input_qs; i++) {
1684 q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
1687 memset(q, 0, sizeof(*q));
1689 q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
1691 kmem_cache_free(qdio_q_cache, q);
1694 irq_ptr->input_qs[i]=q;
1697 for (i = 0; i < no_output_qs; i++) {
1698 q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
1701 memset(q, 0, sizeof(*q));
1703 q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
1705 kmem_cache_free(qdio_q_cache, q);
1708 irq_ptr->output_qs[i]=q;
1714 qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev,
1715 int no_input_qs, int no_output_qs,
1716 qdio_handler_t *input_handler,
1717 qdio_handler_t *output_handler,
1718 unsigned long int_parm,int q_format,
1719 unsigned long flags,
1720 void **inbound_sbals_array,
1721 void **outbound_sbals_array)
1725 char dbf_text[20]; /* see qdio_initialize */
1729 sprintf(dbf_text,"qfqs%4x",cdev->private->schid.sch_no);
1730 QDIO_DBF_TEXT0(0,setup,dbf_text);
1731 for (i=0;i<no_input_qs;i++) {
1732 q=irq_ptr->input_qs[i];
1734 memset(q,0,((char*)&q->slib)-((char*)q));
1735 sprintf(dbf_text,"in-q%4x",i);
1736 QDIO_DBF_TEXT0(0,setup,dbf_text);
1737 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1739 memset(q->slib,0,PAGE_SIZE);
1740 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1744 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1745 q->sbal[j]=*(inbound_sbals_array++);
1747 q->queue_type=q_format;
1748 q->int_parm=int_parm;
1749 q->schid = irq_ptr->schid;
1750 q->irq_ptr = irq_ptr;
1755 q->first_to_check=0;
1757 q->handler=input_handler;
1758 q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
1760 q->tasklet.data=(unsigned long)q;
1761 /* q->is_thinint_q isn't valid at this time, but
1762 * irq_ptr->is_thinint_irq is */
1763 q->tasklet.func=(void(*)(unsigned long))
1764 ((irq_ptr->is_thinint_irq)?&tiqdio_inbound_processing:
1765 &qdio_inbound_processing);
1767 /* actually this is not used for inbound queues. yet. */
1768 atomic_set(&q->busy_siga_counter,0);
1769 q->timing.busy_start=0;
1771 /* for (j=0;j<QDIO_STATS_NUMBER;j++)
1772 q->timing.last_transfer_times[j]=(qdio_get_micros()/
1773 QDIO_STATS_NUMBER)*j;
1774 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1778 if (i>0) irq_ptr->input_qs[i-1]->slib->nsliba=
1779 (unsigned long)(q->slib);
1780 q->slib->sla=(unsigned long)(q->sl);
1781 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1784 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1785 q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1787 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1789 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1790 ptr=(void*)&q->slsb;
1791 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1792 ptr=(void*)q->sbal[0];
1793 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1796 if (!irq_ptr->is_qebsm) {
1797 unsigned int count = 1;
1798 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
1799 set_slsb(q, &j, SLSB_P_INPUT_NOT_INIT, &count);
1803 for (i=0;i<no_output_qs;i++) {
1804 q=irq_ptr->output_qs[i];
1805 memset(q,0,((char*)&q->slib)-((char*)q));
1807 sprintf(dbf_text,"outq%4x",i);
1808 QDIO_DBF_TEXT0(0,setup,dbf_text);
1809 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1811 memset(q->slib,0,PAGE_SIZE);
1812 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1816 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1817 q->sbal[j]=*(outbound_sbals_array++);
1819 q->queue_type=q_format;
1820 if ((q->queue_type == QDIO_IQDIO_QFMT) &&
1821 (no_output_qs > 1) &&
1822 (i == no_output_qs-1))
1823 q->queue_type = QDIO_IQDIO_QFMT_ASYNCH;
1824 q->int_parm=int_parm;
1827 q->schid = irq_ptr->schid;
1829 q->irq_ptr = irq_ptr;
1832 q->first_to_check=0;
1834 q->handler=output_handler;
1836 q->tasklet.data=(unsigned long)q;
1837 q->tasklet.func=(void(*)(unsigned long))
1838 &qdio_outbound_processing;
1839 q->timer.function=(void(*)(unsigned long))
1840 &qdio_outbound_processing;
1841 q->timer.data = (long)q;
1842 init_timer(&q->timer);
1844 atomic_set(&q->busy_siga_counter,0);
1845 q->timing.busy_start=0;
1848 if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba=
1849 (unsigned long)(q->slib);
1850 q->slib->sla=(unsigned long)(q->sl);
1851 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1854 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1855 q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1857 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1859 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1860 ptr=(void*)&q->slsb;
1861 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1862 ptr=(void*)q->sbal[0];
1863 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1866 if (!irq_ptr->is_qebsm) {
1867 unsigned int count = 1;
1868 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
1869 set_slsb(q, &j, SLSB_P_OUTPUT_NOT_INIT, &count);
1875 qdio_fill_thresholds(struct qdio_irq *irq_ptr,
1876 unsigned int no_input_qs,
1877 unsigned int no_output_qs,
1878 unsigned int min_input_threshold,
1879 unsigned int max_input_threshold,
1880 unsigned int min_output_threshold,
1881 unsigned int max_output_threshold)
1886 for (i=0;i<no_input_qs;i++) {
1887 q=irq_ptr->input_qs[i];
1888 q->timing.threshold=max_input_threshold;
1889 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1890 q->threshold_classes[j].threshold=
1891 min_input_threshold+
1892 (max_input_threshold-min_input_threshold)/
1895 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1897 for (i=0;i<no_output_qs;i++) {
1898 q=irq_ptr->output_qs[i];
1899 q->timing.threshold=max_output_threshold;
1900 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1901 q->threshold_classes[j].threshold=
1902 min_output_threshold+
1903 (max_output_threshold-min_output_threshold)/
1906 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1911 tiqdio_thinint_handler(void)
1913 QDIO_DBF_TEXT4(0,trace,"thin_int");
1915 qdio_perf_stat_inc(&perf_stats.thinints);
1917 /* SVS only when needed:
1918 * issue SVS to benefit from iqdio interrupt avoidance
1919 * (SVS clears AISOI)*/
1921 tiqdio_clear_global_summary();
1923 tiqdio_inbound_checks();
1928 qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state)
1931 #ifdef CONFIG_QDIO_DEBUG
1934 QDIO_DBF_TEXT5(0,trace,"newstate");
1935 sprintf(dbf_text,"%4x%4x",irq_ptr->schid.sch_no,state);
1936 QDIO_DBF_TEXT5(0,trace,dbf_text);
1937 #endif /* CONFIG_QDIO_DEBUG */
1939 irq_ptr->state=state;
1940 for (i=0;i<irq_ptr->no_input_qs;i++)
1941 irq_ptr->input_qs[i]->state=state;
1942 for (i=0;i<irq_ptr->no_output_qs;i++)
1943 irq_ptr->output_qs[i]->state=state;
1948 qdio_irq_check_sense(struct subchannel_id schid, struct irb *irb)
1952 if (irb->esw.esw0.erw.cons) {
1953 sprintf(dbf_text,"sens%4x",schid.sch_no);
1954 QDIO_DBF_TEXT2(1,trace,dbf_text);
1955 QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN);
1957 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1958 QDIO_HEXDUMP16(WARN,"irb: ",irb);
1959 QDIO_HEXDUMP16(WARN,"sense data: ",irb->ecw);
1965 qdio_handle_pci(struct qdio_irq *irq_ptr)
1970 qdio_perf_stat_inc(&perf_stats.pcis);
1971 for (i=0;i<irq_ptr->no_input_qs;i++) {
1972 q=irq_ptr->input_qs[i];
1973 if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
1976 qdio_perf_stat_dec(&perf_stats.tl_runs);
1977 __qdio_inbound_processing(q);
1980 if (!irq_ptr->hydra_gives_outbound_pcis)
1982 for (i=0;i<irq_ptr->no_output_qs;i++) {
1983 q=irq_ptr->output_qs[i];
1984 if (qdio_is_outbound_q_done(q))
1986 qdio_perf_stat_dec(&perf_stats.tl_runs);
1987 if (!irq_ptr->sync_done_on_outb_pcis)
1989 __qdio_outbound_processing(q);
1993 static void qdio_establish_handle_irq(struct ccw_device*, int, int);
1996 qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm,
1997 int cstat, int dstat)
1999 struct qdio_irq *irq_ptr;
2003 irq_ptr = cdev->private->qdio_data;
2005 QDIO_DBF_TEXT2(1, trace, "ick2");
2006 sprintf(dbf_text,"%s", cdev->dev.bus_id);
2007 QDIO_DBF_TEXT2(1,trace,dbf_text);
2008 QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int));
2009 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2010 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2011 QDIO_PRINT_ERR("received check condition on activate " \
2012 "queues on device %s (cs=x%x, ds=x%x).\n",
2013 cdev->dev.bus_id, cstat, dstat);
2014 if (irq_ptr->no_input_qs) {
2015 q=irq_ptr->input_qs[0];
2016 } else if (irq_ptr->no_output_qs) {
2017 q=irq_ptr->output_qs[0];
2019 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2021 goto omit_handler_call;
2023 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
2024 QDIO_STATUS_LOOK_FOR_ERROR,
2025 0,0,0,-1,-1,q->int_parm);
2027 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED);
2032 qdio_call_shutdown(struct work_struct *work)
2034 struct ccw_device_private *priv;
2035 struct ccw_device *cdev;
2037 priv = container_of(work, struct ccw_device_private, kick_work);
2039 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2040 put_device(&cdev->dev);
2044 qdio_timeout_handler(struct ccw_device *cdev)
2046 struct qdio_irq *irq_ptr;
2049 QDIO_DBF_TEXT2(0, trace, "qtoh");
2050 sprintf(dbf_text, "%s", cdev->dev.bus_id);
2051 QDIO_DBF_TEXT2(0, trace, dbf_text);
2053 irq_ptr = cdev->private->qdio_data;
2054 sprintf(dbf_text, "state:%d", irq_ptr->state);
2055 QDIO_DBF_TEXT2(0, trace, dbf_text);
2057 switch (irq_ptr->state) {
2058 case QDIO_IRQ_STATE_INACTIVE:
2059 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
2060 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2061 QDIO_DBF_TEXT2(1,setup,"eq:timeo");
2062 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2064 case QDIO_IRQ_STATE_CLEANUP:
2065 QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
2067 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2068 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2070 case QDIO_IRQ_STATE_ESTABLISHED:
2071 case QDIO_IRQ_STATE_ACTIVE:
2072 /* I/O has been terminated by common I/O layer. */
2073 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2074 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2075 QDIO_DBF_TEXT2(1, trace, "cio:term");
2076 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
2077 if (get_device(&cdev->dev)) {
2078 /* Can't call shutdown from interrupt context. */
2079 PREPARE_WORK(&cdev->private->kick_work,
2080 qdio_call_shutdown);
2081 queue_work(ccw_device_work, &cdev->private->kick_work);
2087 ccw_device_set_timeout(cdev, 0);
2088 wake_up(&cdev->private->wait_q);
2092 qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
2094 struct qdio_irq *irq_ptr;
2098 #ifdef CONFIG_QDIO_DEBUG
2099 QDIO_DBF_TEXT4(0, trace, "qint");
2100 sprintf(dbf_text, "%s", cdev->dev.bus_id);
2101 QDIO_DBF_TEXT4(0, trace, dbf_text);
2102 #endif /* CONFIG_QDIO_DEBUG */
2105 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2106 "handler, device %s\n", cdev->dev.bus_id);
2110 irq_ptr = cdev->private->qdio_data;
2112 QDIO_DBF_TEXT2(1, trace, "uint");
2113 sprintf(dbf_text,"%s", cdev->dev.bus_id);
2114 QDIO_DBF_TEXT2(1,trace,dbf_text);
2115 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2121 /* Currently running i/o is in error. */
2122 switch (PTR_ERR(irb)) {
2124 QDIO_PRINT_ERR("i/o error on device %s\n",
2128 qdio_timeout_handler(cdev);
2131 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2132 PTR_ERR(irb), cdev->dev.bus_id);
2137 qdio_irq_check_sense(irq_ptr->schid, irb);
2139 #ifdef CONFIG_QDIO_DEBUG
2140 sprintf(dbf_text, "state:%d", irq_ptr->state);
2141 QDIO_DBF_TEXT4(0, trace, dbf_text);
2142 #endif /* CONFIG_QDIO_DEBUG */
2144 cstat = irb->scsw.cstat;
2145 dstat = irb->scsw.dstat;
2147 switch (irq_ptr->state) {
2148 case QDIO_IRQ_STATE_INACTIVE:
2149 qdio_establish_handle_irq(cdev, cstat, dstat);
2152 case QDIO_IRQ_STATE_CLEANUP:
2153 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2156 case QDIO_IRQ_STATE_ESTABLISHED:
2157 case QDIO_IRQ_STATE_ACTIVE:
2158 if (cstat & SCHN_STAT_PCI) {
2159 qdio_handle_pci(irq_ptr);
2163 if ((cstat&~SCHN_STAT_PCI)||dstat) {
2164 qdio_handle_activate_check(cdev, intparm, cstat, dstat);
2168 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2170 irq_ptr->state, cdev->dev.bus_id);
2172 wake_up(&cdev->private->wait_q);
2177 qdio_synchronize(struct ccw_device *cdev, unsigned int flags,
2178 unsigned int queue_number)
2182 struct qdio_irq *irq_ptr;
2184 #ifdef CONFIG_QDIO_DEBUG
2185 char dbf_text[15]="SyncXXXX";
2188 irq_ptr = cdev->private->qdio_data;
2192 #ifdef CONFIG_QDIO_DEBUG
2193 *((int*)(&dbf_text[4])) = irq_ptr->schid.sch_no;
2194 QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2195 *((int*)(&dbf_text[0]))=flags;
2196 *((int*)(&dbf_text[4]))=queue_number;
2197 QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2198 #endif /* CONFIG_QDIO_DEBUG */
2200 if (flags&QDIO_FLAG_SYNC_INPUT) {
2201 q=irq_ptr->input_qs[queue_number];
2204 if (!(irq_ptr->is_qebsm))
2205 cc = do_siga_sync(q->schid, 0, q->mask);
2206 } else if (flags&QDIO_FLAG_SYNC_OUTPUT) {
2207 q=irq_ptr->output_qs[queue_number];
2210 if (!(irq_ptr->is_qebsm))
2211 cc = do_siga_sync(q->schid, q->mask, 0);
2217 QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int));
2223 qdio_check_subchannel_qebsm(struct qdio_irq *irq_ptr, unsigned char qdioac,
2224 unsigned long token)
2228 unsigned int count, start_buf;
2231 /*check if QEBSM is disabled */
2232 if (!(irq_ptr->is_qebsm) || !(qdioac & 0x01)) {
2233 irq_ptr->is_qebsm = 0;
2234 irq_ptr->sch_token = 0;
2235 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2236 QDIO_DBF_TEXT0(0,setup,"noV=V");
2239 irq_ptr->sch_token = token;
2241 for (i = 0; i < irq_ptr->no_input_qs;i++) {
2242 q = irq_ptr->input_qs[i];
2243 count = QDIO_MAX_BUFFERS_PER_Q;
2245 set_slsb(q, &start_buf, SLSB_P_INPUT_NOT_INIT, &count);
2247 sprintf(dbf_text,"V=V:%2x",irq_ptr->is_qebsm);
2248 QDIO_DBF_TEXT0(0,setup,dbf_text);
2249 sprintf(dbf_text,"%8lx",irq_ptr->sch_token);
2250 QDIO_DBF_TEXT0(0,setup,dbf_text);
2252 for (i = 0; i < irq_ptr->no_output_qs; i++) {
2253 q = irq_ptr->output_qs[i];
2254 count = QDIO_MAX_BUFFERS_PER_Q;
2256 set_slsb(q, &start_buf, SLSB_P_OUTPUT_NOT_INIT, &count);
2261 qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
2264 unsigned char qdioac;
2266 struct chsc_header request;
2274 struct chsc_header response;
2293 QDIO_DBF_TEXT0(0,setup,"getssqd");
2295 ssqd_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2297 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2298 "SIGAs for sch x%x.\n", irq_ptr->schid.sch_no);
2299 irq_ptr->qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2300 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2301 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2302 irq_ptr->is_qebsm = 0;
2303 irq_ptr->sch_token = 0;
2304 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2308 ssqd_area->request = (struct chsc_header) {
2312 ssqd_area->first_sch = irq_ptr->schid.sch_no;
2313 ssqd_area->last_sch = irq_ptr->schid.sch_no;
2314 ssqd_area->ssid = irq_ptr->schid.ssid;
2315 result = chsc(ssqd_area);
2318 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
2319 "SIGAs for sch 0.%x.%x.\n", result,
2320 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2321 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2322 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2323 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2324 irq_ptr->is_qebsm = 0;
2328 if (ssqd_area->response.code != QDIO_CHSC_RESPONSE_CODE_OK) {
2329 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2330 "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n",
2331 ssqd_area->response.code,
2332 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2333 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2334 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2335 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2336 irq_ptr->is_qebsm = 0;
2339 if (!(ssqd_area->flags & CHSC_FLAG_QDIO_CAPABILITY) ||
2340 !(ssqd_area->flags & CHSC_FLAG_VALIDITY) ||
2341 (ssqd_area->sch != irq_ptr->schid.sch_no)) {
2342 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2343 "using all SIGAs.\n",
2344 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2345 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2346 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2347 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* worst case */
2348 irq_ptr->is_qebsm = 0;
2351 qdioac = ssqd_area->qdioac1;
2353 qdio_check_subchannel_qebsm(irq_ptr, qdioac,
2354 ssqd_area->sch_token);
2355 mempool_free(ssqd_area, qdio_mempool_scssc);
2356 irq_ptr->qdioac = qdioac;
2360 tiqdio_check_chsc_availability(void)
2364 if (!css_characteristics_avail)
2367 /* Check for bit 41. */
2368 if (!css_general_characteristics.aif) {
2369 QDIO_PRINT_WARN("Adapter interruption facility not " \
2374 /* Check for bits 107 and 108. */
2375 if (!css_chsc_characteristics.scssc ||
2376 !css_chsc_characteristics.scsscf) {
2377 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2378 "not available.\n");
2382 /* Check for OSA/FCP thin interrupts (bit 67). */
2383 hydra_thinints = css_general_characteristics.aif_osa;
2384 sprintf(dbf_text,"hydrati%1x", hydra_thinints);
2385 QDIO_DBF_TEXT0(0,setup,dbf_text);
2388 /* Check for QEBSM support in general (bit 58). */
2389 is_passthrough = css_general_characteristics.qebsm;
2391 sprintf(dbf_text,"cssQBS:%1x", is_passthrough);
2392 QDIO_DBF_TEXT0(0,setup,dbf_text);
2394 /* Check for aif time delay disablement fac (bit 56). If installed,
2395 * omit svs even under lpar (good point by rick again) */
2396 omit_svs = css_general_characteristics.aif_tdd;
2397 sprintf(dbf_text,"omitsvs%1x", omit_svs);
2398 QDIO_DBF_TEXT0(0,setup,dbf_text);
2404 tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2406 unsigned long real_addr_local_summary_bit;
2407 unsigned long real_addr_dev_st_chg_ind;
2411 unsigned int resp_code;
2415 struct chsc_header request;
2420 u64 summary_indicator_addr;
2421 u64 subchannel_indicator_addr;
2426 u32 word_with_d_bit;
2427 /* set to 0x10000000 to enable
2428 * time delay disablement facility */
2430 struct subchannel_id schid;
2431 u32 reserved6[1004];
2432 struct chsc_header response;
2436 if (!irq_ptr->is_thinint_irq)
2439 if (reset_to_zero) {
2440 real_addr_local_summary_bit=0;
2441 real_addr_dev_st_chg_ind=0;
2443 real_addr_local_summary_bit=
2444 virt_to_phys((volatile void *)indicators);
2445 real_addr_dev_st_chg_ind=
2446 virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
2449 scssc_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2451 QDIO_PRINT_WARN("No memory for setting indicators on " \
2452 "subchannel 0.%x.%x.\n",
2453 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2456 scssc_area->request = (struct chsc_header) {
2460 scssc_area->operation_code = 0;
2462 scssc_area->summary_indicator_addr = real_addr_local_summary_bit;
2463 scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind;
2464 scssc_area->ks = QDIO_STORAGE_KEY;
2465 scssc_area->kc = QDIO_STORAGE_KEY;
2466 scssc_area->isc = TIQDIO_THININT_ISC;
2467 scssc_area->schid = irq_ptr->schid;
2468 /* enables the time delay disablement facility. Don't care
2469 * whether it is really there (i.e. we haven't checked for
2471 if (css_general_characteristics.aif_tdd)
2472 scssc_area->word_with_d_bit = 0x10000000;
2474 QDIO_PRINT_WARN("Time delay disablement facility " \
2477 result = chsc(scssc_area);
2479 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2481 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,result);
2486 resp_code = scssc_area->response.code;
2487 if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2488 QDIO_PRINT_WARN("response upon setting indicators " \
2489 "is 0x%x.\n",resp_code);
2490 sprintf(dbf_text,"sidR%4x",resp_code);
2491 QDIO_DBF_TEXT1(0,trace,dbf_text);
2492 QDIO_DBF_TEXT1(0,setup,dbf_text);
2493 ptr=&scssc_area->response;
2494 QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN);
2499 QDIO_DBF_TEXT2(0,setup,"setscind");
2500 QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit,
2501 sizeof(unsigned long));
2502 QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
2505 mempool_free(scssc_area, qdio_mempool_scssc);
2511 tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2513 unsigned int resp_code;
2519 struct chsc_header request;
2526 u32 reserved5[1009];
2527 struct chsc_header response;
2531 if (!irq_ptr->is_thinint_irq)
2534 scsscf_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2536 QDIO_PRINT_WARN("No memory for setting delay target on " \
2537 "subchannel 0.%x.%x.\n",
2538 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2541 scsscf_area->request = (struct chsc_header) {
2546 scsscf_area->delay_target = delay_target<<16;
2548 result=chsc(scsscf_area);
2550 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2551 "cc=%i. Continuing.\n",
2552 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2558 resp_code = scsscf_area->response.code;
2559 if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2560 QDIO_PRINT_WARN("response upon setting delay target " \
2561 "is 0x%x. Continuing.\n",resp_code);
2562 sprintf(dbf_text,"sdtR%4x",resp_code);
2563 QDIO_DBF_TEXT1(0,trace,dbf_text);
2564 QDIO_DBF_TEXT1(0,setup,dbf_text);
2565 ptr=&scsscf_area->response;
2566 QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN);
2568 QDIO_DBF_TEXT2(0,trace,"delytrgt");
2569 QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
2570 result = 0; /* not critical */
2572 mempool_free(scsscf_area, qdio_mempool_scssc);
2577 qdio_cleanup(struct ccw_device *cdev, int how)
2579 struct qdio_irq *irq_ptr;
2583 irq_ptr = cdev->private->qdio_data;
2587 sprintf(dbf_text,"qcln%4x",irq_ptr->schid.sch_no);
2588 QDIO_DBF_TEXT1(0,trace,dbf_text);
2589 QDIO_DBF_TEXT0(0,setup,dbf_text);
2591 rc = qdio_shutdown(cdev, how);
2592 if ((rc == 0) || (rc == -EINPROGRESS))
2593 rc = qdio_free(cdev);
2598 qdio_shutdown(struct ccw_device *cdev, int how)
2600 struct qdio_irq *irq_ptr;
2604 unsigned long flags;
2608 irq_ptr = cdev->private->qdio_data;
2612 down(&irq_ptr->setting_up_sema);
2614 sprintf(dbf_text,"qsqs%4x",irq_ptr->schid.sch_no);
2615 QDIO_DBF_TEXT1(0,trace,dbf_text);
2616 QDIO_DBF_TEXT0(0,setup,dbf_text);
2618 /* mark all qs as uninteresting */
2619 for (i=0;i<irq_ptr->no_input_qs;i++)
2620 atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1);
2622 for (i=0;i<irq_ptr->no_output_qs;i++)
2623 atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1);
2625 tasklet_kill(&tiqdio_tasklet);
2627 for (i=0;i<irq_ptr->no_input_qs;i++) {
2628 qdio_unmark_q(irq_ptr->input_qs[i]);
2629 tasklet_kill(&irq_ptr->input_qs[i]->tasklet);
2630 wait_event_interruptible_timeout(cdev->private->wait_q,
2631 !atomic_read(&irq_ptr->
2634 QDIO_NO_USE_COUNT_TIMEOUT);
2635 if (atomic_read(&irq_ptr->input_qs[i]->use_count))
2636 result=-EINPROGRESS;
2639 for (i=0;i<irq_ptr->no_output_qs;i++) {
2640 tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
2641 del_timer(&irq_ptr->output_qs[i]->timer);
2642 wait_event_interruptible_timeout(cdev->private->wait_q,
2643 !atomic_read(&irq_ptr->
2646 QDIO_NO_USE_COUNT_TIMEOUT);
2647 if (atomic_read(&irq_ptr->output_qs[i]->use_count))
2648 result=-EINPROGRESS;
2651 /* cleanup subchannel */
2652 spin_lock_irqsave(get_ccwdev_lock(cdev),flags);
2653 if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) {
2654 rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
2655 timeout=QDIO_CLEANUP_CLEAR_TIMEOUT;
2656 } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) {
2657 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2658 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2659 } else { /* default behaviour */
2660 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2661 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2663 if (rc == -ENODEV) {
2664 /* No need to wait for device no longer present. */
2665 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2666 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2667 } else if (((void *)cdev->handler != (void *)qdio_handler) && rc == 0) {
2669 * Whoever put another handler there, has to cope with the
2670 * interrupt theirself. Might happen if qdio_shutdown was
2671 * called on already shutdown queues, but this shouldn't have
2674 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2675 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2676 } else if (rc == 0) {
2677 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
2678 ccw_device_set_timeout(cdev, timeout);
2679 spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags);
2681 wait_event(cdev->private->wait_q,
2682 irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
2683 irq_ptr->state == QDIO_IRQ_STATE_ERR);
2685 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2686 "device %s\n", result, cdev->dev.bus_id);
2687 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2691 if (irq_ptr->is_thinint_irq) {
2692 qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind);
2693 tiqdio_set_subchannel_ind(irq_ptr,1);
2694 /* reset adapter interrupt indicators */
2697 /* exchange int handlers, if necessary */
2698 if ((void*)cdev->handler == (void*)qdio_handler)
2699 cdev->handler=irq_ptr->original_int_handler;
2701 /* Ignore errors. */
2702 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2703 ccw_device_set_timeout(cdev, 0);
2705 up(&irq_ptr->setting_up_sema);
2710 qdio_free(struct ccw_device *cdev)
2712 struct qdio_irq *irq_ptr;
2715 irq_ptr = cdev->private->qdio_data;
2719 down(&irq_ptr->setting_up_sema);
2721 sprintf(dbf_text,"qfqs%4x",irq_ptr->schid.sch_no);
2722 QDIO_DBF_TEXT1(0,trace,dbf_text);
2723 QDIO_DBF_TEXT0(0,setup,dbf_text);
2725 cdev->private->qdio_data = NULL;
2727 up(&irq_ptr->setting_up_sema);
2729 qdio_release_irq_memory(irq_ptr);
2730 module_put(THIS_MODULE);
2735 qdio_allocate_do_dbf(struct qdio_initialize *init_data)
2737 char dbf_text[20]; /* if a printf printed out more than 8 chars */
2739 sprintf(dbf_text,"qfmt:%x",init_data->q_format);
2740 QDIO_DBF_TEXT0(0,setup,dbf_text);
2741 QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8);
2742 sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format);
2743 QDIO_DBF_TEXT0(0,setup,dbf_text);
2744 QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*));
2745 QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*));
2746 QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*));
2747 sprintf(dbf_text,"miit%4x",init_data->min_input_threshold);
2748 QDIO_DBF_TEXT0(0,setup,dbf_text);
2749 sprintf(dbf_text,"mait%4x",init_data->max_input_threshold);
2750 QDIO_DBF_TEXT0(0,setup,dbf_text);
2751 sprintf(dbf_text,"miot%4x",init_data->min_output_threshold);
2752 QDIO_DBF_TEXT0(0,setup,dbf_text);
2753 sprintf(dbf_text,"maot%4x",init_data->max_output_threshold);
2754 QDIO_DBF_TEXT0(0,setup,dbf_text);
2755 sprintf(dbf_text,"niq:%4x",init_data->no_input_qs);
2756 QDIO_DBF_TEXT0(0,setup,dbf_text);
2757 sprintf(dbf_text,"noq:%4x",init_data->no_output_qs);
2758 QDIO_DBF_TEXT0(0,setup,dbf_text);
2759 QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*));
2760 QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*));
2761 QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long));
2762 QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long));
2763 QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*));
2764 QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*));
2768 qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt)
2770 irq_ptr->input_qs[i]->is_iqdio_q = iqfmt;
2771 irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2773 irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib);
2775 irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl);
2777 irq_ptr->qdr->qdf0[i].slsba=
2778 (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]);
2780 irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY;
2781 irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY;
2782 irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY;
2783 irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY;
2787 qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i,
2790 irq_ptr->output_qs[i]->is_iqdio_q = iqfmt;
2791 irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2793 irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib);
2795 irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl);
2797 irq_ptr->qdr->qdf0[i+j].slsba=
2798 (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]);
2800 irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY;
2801 irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY;
2802 irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY;
2803 irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY;
2808 qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr)
2812 for (i=0;i<irq_ptr->no_input_qs;i++) {
2813 irq_ptr->input_qs[i]->siga_sync=
2814 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2815 irq_ptr->input_qs[i]->siga_in=
2816 irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2817 irq_ptr->input_qs[i]->siga_out=
2818 irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2819 irq_ptr->input_qs[i]->siga_sync_done_on_thinints=
2820 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2821 irq_ptr->input_qs[i]->hydra_gives_outbound_pcis=
2822 irq_ptr->hydra_gives_outbound_pcis;
2823 irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis=
2825 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2826 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2827 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2828 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2834 qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr)
2838 for (i=0;i<irq_ptr->no_output_qs;i++) {
2839 irq_ptr->output_qs[i]->siga_sync=
2840 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2841 irq_ptr->output_qs[i]->siga_in=
2842 irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2843 irq_ptr->output_qs[i]->siga_out=
2844 irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2845 irq_ptr->output_qs[i]->siga_sync_done_on_thinints=
2846 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2847 irq_ptr->output_qs[i]->hydra_gives_outbound_pcis=
2848 irq_ptr->hydra_gives_outbound_pcis;
2849 irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis=
2851 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2852 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2853 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2854 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2860 qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat,
2864 struct qdio_irq *irq_ptr;
2866 irq_ptr = cdev->private->qdio_data;
2868 if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) {
2869 sprintf(dbf_text,"ick1%4x",irq_ptr->schid.sch_no);
2870 QDIO_DBF_TEXT2(1,trace,dbf_text);
2871 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2872 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2873 QDIO_PRINT_ERR("received check condition on establish " \
2874 "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2875 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2877 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR);
2880 if (!(dstat & DEV_STAT_DEV_END)) {
2881 QDIO_DBF_TEXT2(1,setup,"eq:no de");
2882 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2883 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2884 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
2885 "device end: dstat=%02x, cstat=%02x\n",
2886 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2888 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2892 if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) {
2893 QDIO_DBF_TEXT2(1,setup,"eq:badio");
2894 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2895 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2896 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
2897 "the following devstat: dstat=%02x, "
2898 "cstat=%02x\n", irq_ptr->schid.ssid,
2899 irq_ptr->schid.sch_no, dstat, cstat);
2900 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2907 qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat)
2909 struct qdio_irq *irq_ptr;
2912 irq_ptr = cdev->private->qdio_data;
2914 sprintf(dbf_text,"qehi%4x",cdev->private->schid.sch_no);
2915 QDIO_DBF_TEXT0(0,setup,dbf_text);
2916 QDIO_DBF_TEXT0(0,trace,dbf_text);
2918 if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat)) {
2919 ccw_device_set_timeout(cdev, 0);
2923 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED);
2924 ccw_device_set_timeout(cdev, 0);
2928 qdio_initialize(struct qdio_initialize *init_data)
2933 sprintf(dbf_text,"qini%4x",init_data->cdev->private->schid.sch_no);
2934 QDIO_DBF_TEXT0(0,setup,dbf_text);
2935 QDIO_DBF_TEXT0(0,trace,dbf_text);
2937 rc = qdio_allocate(init_data);
2939 rc = qdio_establish(init_data);
2941 qdio_free(init_data->cdev);
2949 qdio_allocate(struct qdio_initialize *init_data)
2951 struct qdio_irq *irq_ptr;
2954 sprintf(dbf_text,"qalc%4x",init_data->cdev->private->schid.sch_no);
2955 QDIO_DBF_TEXT0(0,setup,dbf_text);
2956 QDIO_DBF_TEXT0(0,trace,dbf_text);
2957 if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2958 (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2959 ((init_data->no_input_qs) && (!init_data->input_handler)) ||
2960 ((init_data->no_output_qs) && (!init_data->output_handler)) )
2963 if (!init_data->input_sbal_addr_array)
2966 if (!init_data->output_sbal_addr_array)
2969 qdio_allocate_do_dbf(init_data);
2972 irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
2974 QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
2975 QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
2978 QDIO_PRINT_ERR("allocation of irq_ptr failed!\n");
2982 init_MUTEX(&irq_ptr->setting_up_sema);
2984 /* QDR must be in DMA area since CCW data address is only 32 bit */
2985 irq_ptr->qdr = (struct qdr *) __get_free_page(GFP_KERNEL | GFP_DMA);
2986 if (!(irq_ptr->qdr)) {
2987 free_page((unsigned long) irq_ptr);
2988 QDIO_PRINT_ERR("allocation of irq_ptr->qdr failed!\n");
2991 QDIO_DBF_TEXT0(0,setup,"qdr:");
2992 QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*));
2994 if (qdio_alloc_qs(irq_ptr,
2995 init_data->no_input_qs,
2996 init_data->no_output_qs)) {
2997 QDIO_PRINT_ERR("queue allocation failed!\n");
2998 qdio_release_irq_memory(irq_ptr);
3002 init_data->cdev->private->qdio_data = irq_ptr;
3004 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE);
3009 static int qdio_fill_irq(struct qdio_initialize *init_data)
3015 struct qdio_irq *irq_ptr;
3017 irq_ptr = init_data->cdev->private->qdio_data;
3019 memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr));
3021 /* wipes qib.ac, required by ar7063 */
3022 memset(irq_ptr->qdr,0,sizeof(struct qdr));
3024 irq_ptr->int_parm=init_data->int_parm;
3026 irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
3027 irq_ptr->no_input_qs=init_data->no_input_qs;
3028 irq_ptr->no_output_qs=init_data->no_output_qs;
3030 if (init_data->q_format==QDIO_IQDIO_QFMT) {
3031 irq_ptr->is_iqdio_irq=1;
3032 irq_ptr->is_thinint_irq=1;
3034 irq_ptr->is_iqdio_irq=0;
3035 irq_ptr->is_thinint_irq=hydra_thinints;
3037 sprintf(dbf_text,"is_i_t%1x%1x",
3038 irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq);
3039 QDIO_DBF_TEXT2(0,setup,dbf_text);
3041 if (irq_ptr->is_thinint_irq) {
3042 irq_ptr->dev_st_chg_ind = qdio_get_indicator();
3043 QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*));
3044 if (!irq_ptr->dev_st_chg_ind) {
3045 QDIO_PRINT_WARN("no indicator location available " \
3046 "for irq 0.%x.%x\n",
3047 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
3048 qdio_release_irq_memory(irq_ptr);
3054 irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD;
3055 irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT;
3056 irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD;
3057 irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT;
3059 qdio_fill_qs(irq_ptr, init_data->cdev,
3060 init_data->no_input_qs,
3061 init_data->no_output_qs,
3062 init_data->input_handler,
3063 init_data->output_handler,init_data->int_parm,
3064 init_data->q_format,init_data->flags,
3065 init_data->input_sbal_addr_array,
3066 init_data->output_sbal_addr_array);
3068 if (!try_module_get(THIS_MODULE)) {
3069 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3070 qdio_release_irq_memory(irq_ptr);
3074 qdio_fill_thresholds(irq_ptr,init_data->no_input_qs,
3075 init_data->no_output_qs,
3076 init_data->min_input_threshold,
3077 init_data->max_input_threshold,
3078 init_data->min_output_threshold,
3079 init_data->max_output_threshold);
3082 irq_ptr->qdr->qfmt=init_data->q_format;
3083 irq_ptr->qdr->iqdcnt=init_data->no_input_qs;
3084 irq_ptr->qdr->oqdcnt=init_data->no_output_qs;
3085 irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */
3086 irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4;
3088 irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib;
3089 irq_ptr->qdr->qkey=QDIO_STORAGE_KEY;
3092 irq_ptr->is_qebsm = is_passthrough;
3093 if (irq_ptr->is_qebsm)
3094 irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
3096 irq_ptr->qib.qfmt=init_data->q_format;
3097 if (init_data->no_input_qs)
3098 irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib);
3099 if (init_data->no_output_qs)
3100 irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib);
3101 memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8);
3103 qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format,
3104 init_data->qib_param_field,
3105 init_data->no_input_qs,
3106 init_data->no_output_qs,
3107 init_data->input_slib_elements,
3108 init_data->output_slib_elements);
3110 /* first input descriptors, then output descriptors */
3111 is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0;
3112 for (i=0;i<init_data->no_input_qs;i++)
3113 qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio);
3115 for (i=0;i<init_data->no_output_qs;i++)
3116 qdio_allocate_fill_output_desc(irq_ptr, i,
3117 init_data->no_input_qs,
3120 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3122 /* get qdio commands */
3123 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
3125 QDIO_DBF_TEXT2(1,setup,"no eq");
3126 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3127 "Trying to use default.\n");
3129 irq_ptr->equeue = *ciw;
3130 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
3132 QDIO_DBF_TEXT2(1,setup,"no aq");
3133 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3134 "Trying to use default.\n");
3136 irq_ptr->aqueue = *ciw;
3138 /* Set new interrupt handler. */
3139 irq_ptr->original_int_handler = init_data->cdev->handler;
3140 init_data->cdev->handler = qdio_handler;
3146 qdio_establish(struct qdio_initialize *init_data)
3148 struct qdio_irq *irq_ptr;
3149 unsigned long saveflags;
3150 int result, result2;
3151 struct ccw_device *cdev;
3154 cdev=init_data->cdev;
3155 irq_ptr = cdev->private->qdio_data;
3159 if (cdev->private->state != DEV_STATE_ONLINE)
3162 down(&irq_ptr->setting_up_sema);
3164 qdio_fill_irq(init_data);
3166 /* the thinint CHSC stuff */
3167 if (irq_ptr->is_thinint_irq) {
3169 result = tiqdio_set_subchannel_ind(irq_ptr,0);
3171 up(&irq_ptr->setting_up_sema);
3172 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3175 tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET);
3178 sprintf(dbf_text,"qest%4x",cdev->private->schid.sch_no);
3179 QDIO_DBF_TEXT0(0,setup,dbf_text);
3180 QDIO_DBF_TEXT0(0,trace,dbf_text);
3183 irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd;
3184 irq_ptr->ccw.flags=CCW_FLAG_SLI;
3185 irq_ptr->ccw.count=irq_ptr->equeue.count;
3186 irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr);
3188 spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3190 ccw_device_set_options_mask(cdev, 0);
3191 result=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3192 QDIO_DOING_ESTABLISH,0, 0,
3193 QDIO_ESTABLISH_TIMEOUT);
3195 result2=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3196 QDIO_DOING_ESTABLISH,0,0,
3197 QDIO_ESTABLISH_TIMEOUT);
3198 sprintf(dbf_text,"eq:io%4x",result);
3199 QDIO_DBF_TEXT2(1,setup,dbf_text);
3201 sprintf(dbf_text,"eq:io%4x",result);
3202 QDIO_DBF_TEXT2(1,setup,dbf_text);
3204 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3205 "returned %i, next try returned %i\n",
3206 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3210 ccw_device_set_timeout(cdev, 0);
3213 spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3216 up(&irq_ptr->setting_up_sema);
3217 qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR);
3221 /* Timeout is cared for already by using ccw_device_start_timeout(). */
3222 wait_event_interruptible(cdev->private->wait_q,
3223 irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
3224 irq_ptr->state == QDIO_IRQ_STATE_ERR);
3226 if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED)
3229 up(&irq_ptr->setting_up_sema);
3230 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3234 qdio_get_ssqd_information(irq_ptr);
3235 /* if this gets set once, we're running under VM and can omit SVSes */
3236 if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY)
3239 sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac);
3240 QDIO_DBF_TEXT2(0,setup,dbf_text);
3242 sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac);
3243 QDIO_DBF_TEXT2(0,setup,dbf_text);
3245 irq_ptr->hydra_gives_outbound_pcis=
3246 irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED;
3247 irq_ptr->sync_done_on_outb_pcis=
3248 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS;
3250 qdio_initialize_set_siga_flags_input(irq_ptr);
3251 qdio_initialize_set_siga_flags_output(irq_ptr);
3253 up(&irq_ptr->setting_up_sema);
3260 qdio_activate(struct ccw_device *cdev, int flags)
3262 struct qdio_irq *irq_ptr;
3263 int i,result=0,result2;
3264 unsigned long saveflags;
3265 char dbf_text[20]; /* see qdio_initialize */
3267 irq_ptr = cdev->private->qdio_data;
3271 if (cdev->private->state != DEV_STATE_ONLINE)
3274 down(&irq_ptr->setting_up_sema);
3275 if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) {
3280 sprintf(dbf_text,"qact%4x", irq_ptr->schid.sch_no);
3281 QDIO_DBF_TEXT2(0,setup,dbf_text);
3282 QDIO_DBF_TEXT2(0,trace,dbf_text);
3285 irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd;
3286 irq_ptr->ccw.flags=CCW_FLAG_SLI;
3287 irq_ptr->ccw.count=irq_ptr->aqueue.count;
3288 irq_ptr->ccw.cda=QDIO_GET_ADDR(0);
3290 spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3292 ccw_device_set_timeout(cdev, 0);
3293 ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
3294 result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE,
3295 0, DOIO_DENY_PREFETCH);
3297 result2=ccw_device_start(cdev,&irq_ptr->ccw,
3298 QDIO_DOING_ACTIVATE,0,0);
3299 sprintf(dbf_text,"aq:io%4x",result);
3300 QDIO_DBF_TEXT2(1,setup,dbf_text);
3302 sprintf(dbf_text,"aq:io%4x",result);
3303 QDIO_DBF_TEXT2(1,setup,dbf_text);
3305 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3306 "returned %i, next try returned %i\n",
3307 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3312 spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3316 for (i=0;i<irq_ptr->no_input_qs;i++) {
3317 if (irq_ptr->is_thinint_irq) {
3319 * that way we know, that, if we will get interrupted
3320 * by tiqdio_inbound_processing, qdio_unmark_q will
3323 qdio_reserve_q(irq_ptr->input_qs[i]);
3324 qdio_mark_tiq(irq_ptr->input_qs[i]);
3325 qdio_release_q(irq_ptr->input_qs[i]);
3329 if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) {
3330 for (i=0;i<irq_ptr->no_input_qs;i++) {
3331 irq_ptr->input_qs[i]->is_input_q|=
3332 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT;
3336 wait_event_interruptible_timeout(cdev->private->wait_q,
3338 QDIO_IRQ_STATE_STOPPED) ||
3340 QDIO_IRQ_STATE_ERR)),
3341 QDIO_ACTIVATE_TIMEOUT);
3343 switch (irq_ptr->state) {
3344 case QDIO_IRQ_STATE_STOPPED:
3345 case QDIO_IRQ_STATE_ERR:
3346 up(&irq_ptr->setting_up_sema);
3347 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3348 down(&irq_ptr->setting_up_sema);
3352 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
3356 up(&irq_ptr->setting_up_sema);
3361 /* buffers filled forwards again to make Rick happy */
3363 qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx,
3364 unsigned int count, struct qdio_buffer *buffers)
3366 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3369 qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3370 if (irq->is_qebsm) {
3372 tmp = set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
3379 set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
3382 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
3387 qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx,
3388 unsigned int count, struct qdio_buffer *buffers)
3390 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3393 qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3394 if (irq->is_qebsm) {
3396 tmp = set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3404 set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3407 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
3412 do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags,
3413 unsigned int qidx, unsigned int count,
3414 struct qdio_buffer *buffers)
3418 /* This is the inbound handling of queues */
3419 used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3421 qdio_do_qdio_fill_input(q,qidx,count,buffers);
3423 if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&&
3424 (callflags&QDIO_FLAG_UNDER_INTERRUPT))
3425 atomic_xchg(&q->polling,0);
3429 if (callflags&QDIO_FLAG_DONT_SIGA)
3434 result=qdio_siga_input(q);
3437 q->error_status_flags|=
3438 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
3439 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
3440 q->siga_error=result;
3448 do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
3449 unsigned int qidx, unsigned int count,
3450 struct qdio_buffer *buffers)
3453 unsigned int cnt, start_buf;
3454 unsigned char state = 0;
3455 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3457 /* This is the outbound handling of queues */
3458 qdio_do_qdio_fill_output(q,qidx,count,buffers);
3460 used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3462 if (callflags&QDIO_FLAG_DONT_SIGA) {
3463 qdio_perf_stat_inc(&perf_stats.outbound_cnt);
3466 if (callflags & QDIO_FLAG_PCI_OUT)
3470 if (q->is_iqdio_q) {
3471 /* one siga for every sbal */
3473 qdio_kick_outbound_q(q);
3475 __qdio_outbound_processing(q);
3477 /* under VM, we do a SIGA sync unconditionally */
3481 * w/o shadow queues (else branch of
3482 * SYNC_MEMORY :-/ ), we try to
3483 * fast-requeue buffers
3485 if (irq->is_qebsm) {
3487 start_buf = ((qidx+QDIO_MAX_BUFFERS_PER_Q-1) &
3488 (QDIO_MAX_BUFFERS_PER_Q-1));
3489 qdio_do_eqbs(q, &state, &start_buf, &cnt);
3491 state = q->slsb.acc.val[(qidx+QDIO_MAX_BUFFERS_PER_Q-1)
3492 &(QDIO_MAX_BUFFERS_PER_Q-1) ];
3493 if (state != SLSB_CU_OUTPUT_PRIMED) {
3494 qdio_kick_outbound_q(q);
3496 QDIO_DBF_TEXT3(0,trace, "fast-req");
3497 qdio_perf_stat_inc(&perf_stats.fast_reqs);
3501 * only marking the q could take too long,
3502 * the upper layer module could do a lot of
3503 * traffic in that time
3505 __qdio_outbound_processing(q);
3508 qdio_perf_stat_inc(&perf_stats.outbound_cnt);
3511 /* count must be 1 in iqdio */
3513 do_QDIO(struct ccw_device *cdev,unsigned int callflags,
3514 unsigned int queue_number, unsigned int qidx,
3515 unsigned int count,struct qdio_buffer *buffers)
3517 struct qdio_irq *irq_ptr;
3518 #ifdef CONFIG_QDIO_DEBUG
3521 sprintf(dbf_text,"doQD%04x",cdev->private->schid.sch_no);
3522 QDIO_DBF_TEXT3(0,trace,dbf_text);
3523 #endif /* CONFIG_QDIO_DEBUG */
3525 if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) ||
3526 (count>QDIO_MAX_BUFFERS_PER_Q) ||
3527 (queue_number>QDIO_MAX_QUEUES_PER_IRQ) )
3533 irq_ptr = cdev->private->qdio_data;
3537 #ifdef CONFIG_QDIO_DEBUG
3538 if (callflags&QDIO_FLAG_SYNC_INPUT)
3539 QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number],
3542 QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number],
3544 sprintf(dbf_text,"flag%04x",callflags);
3545 QDIO_DBF_TEXT3(0,trace,dbf_text);
3546 sprintf(dbf_text,"qi%02xct%02x",qidx,count);
3547 QDIO_DBF_TEXT3(0,trace,dbf_text);
3548 #endif /* CONFIG_QDIO_DEBUG */
3550 if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE)
3553 if (callflags&QDIO_FLAG_SYNC_INPUT)
3554 do_qdio_handle_inbound(irq_ptr->input_qs[queue_number],
3555 callflags, qidx, count, buffers);
3556 else if (callflags&QDIO_FLAG_SYNC_OUTPUT)
3557 do_qdio_handle_outbound(irq_ptr->output_qs[queue_number],
3558 callflags, qidx, count, buffers);
3560 QDIO_DBF_TEXT3(1,trace,"doQD:inv");
3567 qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
3568 int buffer_length, int *eof, void *data)
3572 /* we are always called with buffer_length=4k, so we all
3573 deliver on the first read */
3577 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3579 _OUTP_IT("Number of tasklet runs (total) : %li\n",
3580 (long)atomic64_read(&perf_stats.tl_runs));
3581 _OUTP_IT("Inbound tasklet runs tried/retried : %li/%li\n",
3582 (long)atomic64_read(&perf_stats.inbound_tl_runs),
3583 (long)atomic64_read(&perf_stats.inbound_tl_runs_resched));
3584 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %li/%li\n",
3585 (long)atomic64_read(&perf_stats.inbound_thin_tl_runs),
3586 (long)atomic64_read(&perf_stats.inbound_thin_tl_runs_resched));
3587 _OUTP_IT("Outbound tasklet runs tried/retried : %li/%li\n",
3588 (long)atomic64_read(&perf_stats.outbound_tl_runs),
3589 (long)atomic64_read(&perf_stats.outbound_tl_runs_resched));
3591 _OUTP_IT("Number of SIGA sync's issued : %li\n",
3592 (long)atomic64_read(&perf_stats.siga_syncs));
3593 _OUTP_IT("Number of SIGA in's issued : %li\n",
3594 (long)atomic64_read(&perf_stats.siga_ins));
3595 _OUTP_IT("Number of SIGA out's issued : %li\n",
3596 (long)atomic64_read(&perf_stats.siga_outs));
3597 _OUTP_IT("Number of PCIs caught : %li\n",
3598 (long)atomic64_read(&perf_stats.pcis));
3599 _OUTP_IT("Number of adapter interrupts caught : %li\n",
3600 (long)atomic64_read(&perf_stats.thinints));
3601 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %li\n",
3602 (long)atomic64_read(&perf_stats.fast_reqs));
3604 _OUTP_IT("Number of inbound transfers : %li\n",
3605 (long)atomic64_read(&perf_stats.inbound_cnt));
3606 _OUTP_IT("Number of do_QDIOs outbound : %li\n",
3607 (long)atomic64_read(&perf_stats.outbound_cnt));
3608 #else /* CONFIG_64BIT */
3609 _OUTP_IT("Number of tasklet runs (total) : %i\n",
3610 atomic_read(&perf_stats.tl_runs));
3611 _OUTP_IT("Inbound tasklet runs tried/retried : %i/%i\n",
3612 atomic_read(&perf_stats.inbound_tl_runs),
3613 atomic_read(&perf_stats.inbound_tl_runs_resched));
3614 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %i/%i\n",
3615 atomic_read(&perf_stats.inbound_thin_tl_runs),
3616 atomic_read(&perf_stats.inbound_thin_tl_runs_resched));
3617 _OUTP_IT("Outbound tasklet runs tried/retried : %i/%i\n",
3618 atomic_read(&perf_stats.outbound_tl_runs),
3619 atomic_read(&perf_stats.outbound_tl_runs_resched));
3621 _OUTP_IT("Number of SIGA sync's issued : %i\n",
3622 atomic_read(&perf_stats.siga_syncs));
3623 _OUTP_IT("Number of SIGA in's issued : %i\n",
3624 atomic_read(&perf_stats.siga_ins));
3625 _OUTP_IT("Number of SIGA out's issued : %i\n",
3626 atomic_read(&perf_stats.siga_outs));
3627 _OUTP_IT("Number of PCIs caught : %i\n",
3628 atomic_read(&perf_stats.pcis));
3629 _OUTP_IT("Number of adapter interrupts caught : %i\n",
3630 atomic_read(&perf_stats.thinints));
3631 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %i\n",
3632 atomic_read(&perf_stats.fast_reqs));
3634 _OUTP_IT("Number of inbound transfers : %i\n",
3635 atomic_read(&perf_stats.inbound_cnt));
3636 _OUTP_IT("Number of do_QDIOs outbound : %i\n",
3637 atomic_read(&perf_stats.outbound_cnt));
3638 #endif /* CONFIG_64BIT */
3644 static struct proc_dir_entry *qdio_perf_proc_file;
3647 qdio_add_procfs_entry(void)
3649 proc_perf_file_registration=0;
3650 qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
3651 S_IFREG|0444,&proc_root);
3652 if (qdio_perf_proc_file) {
3653 qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read;
3654 } else proc_perf_file_registration=-1;
3656 if (proc_perf_file_registration)
3657 QDIO_PRINT_WARN("was not able to register perf. " \
3658 "proc-file (%i).\n",
3659 proc_perf_file_registration);
3663 qdio_remove_procfs_entry(void)
3665 if (!proc_perf_file_registration) /* means if it went ok earlier */
3666 remove_proc_entry(QDIO_PERF,&proc_root);
3670 * attributes in sysfs
3671 *****************************************************************************/
3674 qdio_performance_stats_show(struct bus_type *bus, char *buf)
3676 return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0);
3680 qdio_performance_stats_store(struct bus_type *bus, const char *buf, size_t count)
3685 i = simple_strtoul(buf, &tmp, 16);
3686 if ((i == 0) || (i == 1)) {
3687 if (i == qdio_performance_stats)
3689 qdio_performance_stats = i;
3691 /* reset perf. stat. info */
3693 atomic64_set(&perf_stats.tl_runs, 0);
3694 atomic64_set(&perf_stats.outbound_tl_runs, 0);
3695 atomic64_set(&perf_stats.inbound_tl_runs, 0);
3696 atomic64_set(&perf_stats.inbound_tl_runs_resched, 0);
3697 atomic64_set(&perf_stats.inbound_thin_tl_runs, 0);
3698 atomic64_set(&perf_stats.inbound_thin_tl_runs_resched,
3700 atomic64_set(&perf_stats.siga_outs, 0);
3701 atomic64_set(&perf_stats.siga_ins, 0);
3702 atomic64_set(&perf_stats.siga_syncs, 0);
3703 atomic64_set(&perf_stats.pcis, 0);
3704 atomic64_set(&perf_stats.thinints, 0);
3705 atomic64_set(&perf_stats.fast_reqs, 0);
3706 atomic64_set(&perf_stats.outbound_cnt, 0);
3707 atomic64_set(&perf_stats.inbound_cnt, 0);
3708 #else /* CONFIG_64BIT */
3709 atomic_set(&perf_stats.tl_runs, 0);
3710 atomic_set(&perf_stats.outbound_tl_runs, 0);
3711 atomic_set(&perf_stats.inbound_tl_runs, 0);
3712 atomic_set(&perf_stats.inbound_tl_runs_resched, 0);
3713 atomic_set(&perf_stats.inbound_thin_tl_runs, 0);
3714 atomic_set(&perf_stats.inbound_thin_tl_runs_resched, 0);
3715 atomic_set(&perf_stats.siga_outs, 0);
3716 atomic_set(&perf_stats.siga_ins, 0);
3717 atomic_set(&perf_stats.siga_syncs, 0);
3718 atomic_set(&perf_stats.pcis, 0);
3719 atomic_set(&perf_stats.thinints, 0);
3720 atomic_set(&perf_stats.fast_reqs, 0);
3721 atomic_set(&perf_stats.outbound_cnt, 0);
3722 atomic_set(&perf_stats.inbound_cnt, 0);
3723 #endif /* CONFIG_64BIT */
3726 QDIO_PRINT_WARN("QDIO performance_stats: write 0 or 1 to this file!\n");
3732 static BUS_ATTR(qdio_performance_stats, 0644, qdio_performance_stats_show,
3733 qdio_performance_stats_store);
3736 tiqdio_register_thinints(void)
3739 register_thinint_result=
3740 s390_register_adapter_interrupt(&tiqdio_thinint_handler);
3741 if (register_thinint_result) {
3742 sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff));
3743 QDIO_DBF_TEXT0(0,setup,dbf_text);
3744 QDIO_PRINT_ERR("failed to register adapter handler " \
3745 "(rc=%i).\nAdapter interrupts might " \
3746 "not work. Continuing.\n",
3747 register_thinint_result);
3752 tiqdio_unregister_thinints(void)
3754 if (!register_thinint_result)
3755 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler);
3759 qdio_get_qdio_memory(void)
3762 indicator_used[0]=1;
3764 for (i=1;i<INDICATORS_PER_CACHELINE;i++)
3765 indicator_used[i]=0;
3766 indicators = kzalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
3774 qdio_release_qdio_memory(void)
3781 qdio_unregister_dbf_views(void)
3784 debug_unregister(qdio_dbf_setup);
3786 debug_unregister(qdio_dbf_sbal);
3788 debug_unregister(qdio_dbf_sense);
3790 debug_unregister(qdio_dbf_trace);
3791 #ifdef CONFIG_QDIO_DEBUG
3792 if (qdio_dbf_slsb_out)
3793 debug_unregister(qdio_dbf_slsb_out);
3794 if (qdio_dbf_slsb_in)
3795 debug_unregister(qdio_dbf_slsb_in);
3796 #endif /* CONFIG_QDIO_DEBUG */
3800 qdio_register_dbf_views(void)
3802 qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
3803 QDIO_DBF_SETUP_PAGES,
3804 QDIO_DBF_SETUP_NR_AREAS,
3805 QDIO_DBF_SETUP_LEN);
3806 if (!qdio_dbf_setup)
3808 debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view);
3809 debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
3811 qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
3812 QDIO_DBF_SBAL_PAGES,
3813 QDIO_DBF_SBAL_NR_AREAS,
3818 debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view);
3819 debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
3821 qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
3822 QDIO_DBF_SENSE_PAGES,
3823 QDIO_DBF_SENSE_NR_AREAS,
3824 QDIO_DBF_SENSE_LEN);
3825 if (!qdio_dbf_sense)
3828 debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view);
3829 debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
3831 qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
3832 QDIO_DBF_TRACE_PAGES,
3833 QDIO_DBF_TRACE_NR_AREAS,
3834 QDIO_DBF_TRACE_LEN);
3835 if (!qdio_dbf_trace)
3838 debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view);
3839 debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL);
3841 #ifdef CONFIG_QDIO_DEBUG
3842 qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
3843 QDIO_DBF_SLSB_OUT_PAGES,
3844 QDIO_DBF_SLSB_OUT_NR_AREAS,
3845 QDIO_DBF_SLSB_OUT_LEN);
3846 if (!qdio_dbf_slsb_out)
3848 debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view);
3849 debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
3851 qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
3852 QDIO_DBF_SLSB_IN_PAGES,
3853 QDIO_DBF_SLSB_IN_NR_AREAS,
3854 QDIO_DBF_SLSB_IN_LEN);
3855 if (!qdio_dbf_slsb_in)
3857 debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view);
3858 debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL);
3859 #endif /* CONFIG_QDIO_DEBUG */
3862 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3863 qdio_unregister_dbf_views();
3867 static void *qdio_mempool_alloc(gfp_t gfp_mask, void *size)
3869 return (void *) get_zeroed_page(gfp_mask|GFP_DMA);
3872 static void qdio_mempool_free(void *element, void *size)
3874 free_page((unsigned long) element);
3883 printk("qdio: loading %s\n",version);
3885 res=qdio_get_qdio_memory();
3889 qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
3891 if (!qdio_q_cache) {
3892 qdio_release_qdio_memory();
3896 res = qdio_register_dbf_views();
3898 kmem_cache_destroy(qdio_q_cache);
3899 qdio_release_qdio_memory();
3903 QDIO_DBF_TEXT0(0,setup,"initQDIO");
3904 res = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
3906 memset((void*)&perf_stats,0,sizeof(perf_stats));
3907 QDIO_DBF_TEXT0(0,setup,"perfstat");
3909 QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
3911 qdio_add_procfs_entry();
3913 qdio_mempool_scssc = mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS,
3915 qdio_mempool_free, NULL);
3917 if (tiqdio_check_chsc_availability())
3918 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3920 tiqdio_register_thinints();
3928 tiqdio_unregister_thinints();
3929 qdio_remove_procfs_entry();
3930 qdio_release_qdio_memory();
3931 qdio_unregister_dbf_views();
3932 mempool_destroy(qdio_mempool_scssc);
3933 kmem_cache_destroy(qdio_q_cache);
3934 bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
3935 printk("qdio: %s: module removed\n",version);
3938 module_init(init_QDIO);
3939 module_exit(cleanup_QDIO);
3941 EXPORT_SYMBOL(qdio_allocate);
3942 EXPORT_SYMBOL(qdio_establish);
3943 EXPORT_SYMBOL(qdio_initialize);
3944 EXPORT_SYMBOL(qdio_activate);
3945 EXPORT_SYMBOL(do_QDIO);
3946 EXPORT_SYMBOL(qdio_shutdown);
3947 EXPORT_SYMBOL(qdio_free);
3948 EXPORT_SYMBOL(qdio_cleanup);
3949 EXPORT_SYMBOL(qdio_synchronize);