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/config.h>
34 #include <linux/module.h>
35 #include <linux/init.h>
37 #include <linux/slab.h>
38 #include <linux/kernel.h>
39 #include <linux/proc_fs.h>
40 #include <linux/timer.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>
59 /****************** MODULE PARAMETER VARIABLES ********************/
60 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
61 MODULE_DESCRIPTION("QDIO base support version 2, " \
62 "Copyright 2000 IBM Corporation");
63 MODULE_LICENSE("GPL");
65 /******************** HERE WE GO ***********************************/
67 static const char version[] = "QDIO base support version 2";
69 #ifdef QDIO_PERFORMANCE_STATS
70 static int proc_perf_file_registration;
71 static unsigned long i_p_c, i_p_nc, o_p_c, o_p_nc, ii_p_c, ii_p_nc;
72 static struct qdio_perf_stats perf_stats;
73 #endif /* QDIO_PERFORMANCE_STATS */
75 static int hydra_thinints;
76 static int is_passthrough = 0;
79 static int indicator_used[INDICATORS_PER_CACHELINE];
80 static __u32 * volatile indicators;
81 static __u32 volatile spare_indicator;
82 static atomic_t spare_indicator_usecount;
84 static debug_info_t *qdio_dbf_setup;
85 static debug_info_t *qdio_dbf_sbal;
86 static debug_info_t *qdio_dbf_trace;
87 static debug_info_t *qdio_dbf_sense;
88 #ifdef CONFIG_QDIO_DEBUG
89 static debug_info_t *qdio_dbf_slsb_out;
90 static debug_info_t *qdio_dbf_slsb_in;
91 #endif /* CONFIG_QDIO_DEBUG */
94 static volatile struct qdio_q *tiq_list=NULL; /* volatile as it could change
95 during a while loop */
96 static DEFINE_SPINLOCK(ttiq_list_lock);
97 static int register_thinint_result;
98 static void tiqdio_tl(unsigned long);
99 static DECLARE_TASKLET(tiqdio_tasklet,tiqdio_tl,0);
101 /* not a macro, as one of the arguments is atomic_read */
103 qdio_min(int a,int b)
111 /***************** SCRUBBER HELPER ROUTINES **********************/
114 qdio_get_micros(void)
116 return (get_clock() >> 10); /* time>>12 is microseconds */
120 * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
121 * the q in any case, so that we'll not be interrupted when we are in
122 * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
123 * ever works (last famous words)
126 qdio_reserve_q(struct qdio_q *q)
128 return atomic_add_return(1,&q->use_count) - 1;
132 qdio_release_q(struct qdio_q *q)
134 atomic_dec(&q->use_count);
139 qdio_check_ccq(struct qdio_q *q, unsigned int ccq)
143 if (ccq == 0 || ccq == 32 || ccq == 96)
147 /*notify devices immediately*/
148 sprintf(dbf_text,"%d", ccq);
149 QDIO_DBF_TEXT2(1,trace,dbf_text);
152 /* EQBS: extract buffer states */
154 qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
155 unsigned int *start, unsigned int *cnt)
157 struct qdio_irq *irq;
158 unsigned int tmp_cnt, q_no, ccq;
164 irq = (struct qdio_irq*)q->irq_ptr;
167 q_no += irq->no_input_qs;
168 ccq = do_eqbs(irq->sch_token, state, q_no, start, cnt);
169 rc = qdio_check_ccq(q, ccq);
171 QDIO_DBF_TEXT2(1,trace,"eqberr");
172 sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt, *cnt, ccq, q_no);
173 QDIO_DBF_TEXT2(1,trace,dbf_text);
174 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
175 QDIO_STATUS_LOOK_FOR_ERROR,
176 0, 0, 0, -1, -1, q->int_parm);
179 return (tmp_cnt - *cnt);
182 /* SQBS: set buffer states */
184 qdio_do_sqbs(struct qdio_q *q, unsigned char state,
185 unsigned int *start, unsigned int *cnt)
187 struct qdio_irq *irq;
188 unsigned int tmp_cnt, q_no, ccq;
194 irq = (struct qdio_irq*)q->irq_ptr;
197 q_no += irq->no_input_qs;
198 ccq = do_sqbs(irq->sch_token, state, q_no, start, cnt);
199 rc = qdio_check_ccq(q, ccq);
201 QDIO_DBF_TEXT3(1,trace,"sqberr");
202 sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt,*cnt,ccq,q_no);
203 QDIO_DBF_TEXT3(1,trace,dbf_text);
204 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
205 QDIO_STATUS_LOOK_FOR_ERROR,
206 0, 0, 0, -1, -1, q->int_parm);
209 return (tmp_cnt - *cnt);
213 qdio_set_slsb(struct qdio_q *q, unsigned int *bufno,
214 unsigned char state, unsigned int *count)
217 struct qdio_irq *irq;
219 irq = (struct qdio_irq*)q->irq_ptr;
220 if (!irq->is_qebsm) {
221 slsb = (char *)&q->slsb.acc.val[(*bufno)];
225 return qdio_do_sqbs(q, state, bufno, count);
228 #ifdef CONFIG_QDIO_DEBUG
230 qdio_trace_slsb(struct qdio_q *q)
232 if (q->queue_type==QDIO_TRACE_QTYPE) {
234 QDIO_DBF_HEX2(0,slsb_in,&q->slsb,
235 QDIO_MAX_BUFFERS_PER_Q);
237 QDIO_DBF_HEX2(0,slsb_out,&q->slsb,
238 QDIO_MAX_BUFFERS_PER_Q);
244 set_slsb(struct qdio_q *q, unsigned int *bufno,
245 unsigned char state, unsigned int *count)
248 #ifdef CONFIG_QDIO_DEBUG
251 rc = qdio_set_slsb(q, bufno, state, count);
252 #ifdef CONFIG_QDIO_DEBUG
258 qdio_siga_sync(struct qdio_q *q, unsigned int gpr2,
263 QDIO_DBF_TEXT4(0,trace,"sigasync");
264 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
266 #ifdef QDIO_PERFORMANCE_STATS
267 perf_stats.siga_syncs++;
268 #endif /* QDIO_PERFORMANCE_STATS */
270 cc = do_siga_sync(q->schid, gpr2, gpr3);
272 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
278 qdio_siga_sync_q(struct qdio_q *q)
281 return qdio_siga_sync(q, 0, q->mask);
282 return qdio_siga_sync(q, q->mask, 0);
286 __do_siga_output(struct qdio_q *q, unsigned int *busy_bit)
288 struct qdio_irq *irq;
292 irq = (struct qdio_irq *) q->irq_ptr;
294 schid = *((u32 *)&q->schid);
296 schid = irq->sch_token;
299 return do_siga_output(schid, q->mask, busy_bit, fc);
303 * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
304 * an access exception
307 qdio_siga_output(struct qdio_q *q)
313 #ifdef QDIO_PERFORMANCE_STATS
314 perf_stats.siga_outs++;
315 #endif /* QDIO_PERFORMANCE_STATS */
317 QDIO_DBF_TEXT4(0,trace,"sigaout");
318 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
321 cc = __do_siga_output(q, &busy_bit);
322 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
323 if ((cc==2) && (busy_bit) && (q->is_iqdio_q)) {
326 if ((NOW-start_time)>QDIO_BUSY_BIT_PATIENCE)
332 if ((cc==2) && (busy_bit))
333 cc |= QDIO_SIGA_ERROR_B_BIT_SET;
336 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
342 qdio_siga_input(struct qdio_q *q)
346 QDIO_DBF_TEXT4(0,trace,"sigain");
347 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
349 #ifdef QDIO_PERFORMANCE_STATS
350 perf_stats.siga_ins++;
351 #endif /* QDIO_PERFORMANCE_STATS */
353 cc = do_siga_input(q->schid, q->mask);
356 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
361 /* locked by the locks in qdio_activate and qdio_cleanup */
363 qdio_get_indicator(void)
367 for (i=1;i<INDICATORS_PER_CACHELINE;i++)
368 if (!indicator_used[i]) {
372 atomic_inc(&spare_indicator_usecount);
373 return (__u32 * volatile) &spare_indicator;
376 /* locked by the locks in qdio_activate and qdio_cleanup */
378 qdio_put_indicator(__u32 *addr)
382 if ( (addr) && (addr!=&spare_indicator) ) {
386 if (addr == &spare_indicator)
387 atomic_dec(&spare_indicator_usecount);
391 tiqdio_clear_summary_bit(__u32 *location)
393 QDIO_DBF_TEXT5(0,trace,"clrsummb");
394 QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
400 tiqdio_set_summary_bit(__u32 *location)
402 QDIO_DBF_TEXT5(0,trace,"setsummb");
403 QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
409 tiqdio_sched_tl(void)
411 tasklet_hi_schedule(&tiqdio_tasklet);
415 qdio_mark_tiq(struct qdio_q *q)
419 QDIO_DBF_TEXT4(0,trace,"mark iq");
420 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
422 spin_lock_irqsave(&ttiq_list_lock,flags);
423 if (unlikely(atomic_read(&q->is_in_shutdown)))
429 if ((q->list_prev) || (q->list_next))
437 q->list_next=tiq_list;
438 q->list_prev=tiq_list->list_prev;
439 tiq_list->list_prev->list_next=q;
440 tiq_list->list_prev=q;
442 spin_unlock_irqrestore(&ttiq_list_lock,flags);
444 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
448 spin_unlock_irqrestore(&ttiq_list_lock,flags);
453 qdio_mark_q(struct qdio_q *q)
455 QDIO_DBF_TEXT4(0,trace,"mark q");
456 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
458 if (unlikely(atomic_read(&q->is_in_shutdown)))
461 tasklet_schedule(&q->tasklet);
465 qdio_stop_polling(struct qdio_q *q)
467 #ifdef QDIO_USE_PROCESSING_STATE
468 unsigned int tmp, gsf, count = 1;
469 unsigned char state = 0;
470 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
472 if (!atomic_swap(&q->polling,0))
475 QDIO_DBF_TEXT4(0,trace,"stoppoll");
476 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
478 /* show the card that we are not polling anymore */
482 tmp = gsf = GET_SAVED_FRONTIER(q);
483 tmp = ((tmp + QDIO_MAX_BUFFERS_PER_Q-1) & (QDIO_MAX_BUFFERS_PER_Q-1) );
484 set_slsb(q, &tmp, SLSB_P_INPUT_NOT_INIT, &count);
487 * we don't issue this SYNC_MEMORY, as we trust Rick T and
488 * moreover will not use the PROCESSING state under VM, so
489 * q->polling was 0 anyway
494 qdio_do_eqbs(q, &state, &gsf, &count);
496 state = q->slsb.acc.val[gsf];
497 if (state != SLSB_P_INPUT_PRIMED)
500 * set our summary bit again, as otherwise there is a
501 * small window we can miss between resetting it and
502 * checking for PRIMED state
505 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
508 #else /* QDIO_USE_PROCESSING_STATE */
510 #endif /* QDIO_USE_PROCESSING_STATE */
514 * see the comment in do_QDIO and before qdio_reserve_q about the
515 * sophisticated locking outside of unmark_q, so that we don't need to
516 * disable the interrupts :-)
519 qdio_unmark_q(struct qdio_q *q)
523 QDIO_DBF_TEXT4(0,trace,"unmark q");
524 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
526 if ((!q->list_prev)||(!q->list_next))
529 if ((q->is_thinint_q)&&(q->is_input_q)) {
531 spin_lock_irqsave(&ttiq_list_lock,flags);
532 /* in case cleanup has done this already and simultanously
533 * qdio_unmark_q is called from the interrupt handler, we've
534 * got to check this in this specific case again */
535 if ((!q->list_prev)||(!q->list_next))
537 if (q->list_next==q) {
538 /* q was the only interesting q */
543 q->list_next->list_prev=q->list_prev;
544 q->list_prev->list_next=q->list_next;
545 tiq_list=q->list_next;
550 spin_unlock_irqrestore(&ttiq_list_lock,flags);
554 static inline unsigned long
555 tiqdio_clear_global_summary(void)
559 QDIO_DBF_TEXT5(0,trace,"clrglobl");
561 time = do_clear_global_summary();
563 QDIO_DBF_HEX5(0,trace,&time,sizeof(unsigned long));
569 /************************* OUTBOUND ROUTINES *******************************/
571 qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q *q)
573 struct qdio_irq *irq;
575 unsigned int cnt, count, ftc;
577 irq = (struct qdio_irq *) q->irq_ptr;
578 if ((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis))
581 ftc = q->first_to_check;
582 count = qdio_min(atomic_read(&q->number_of_buffers_used),
583 (QDIO_MAX_BUFFERS_PER_Q-1));
585 return q->first_to_check;
586 cnt = qdio_do_eqbs(q, &state, &ftc, &count);
588 return q->first_to_check;
590 case SLSB_P_OUTPUT_ERROR:
591 QDIO_DBF_TEXT3(0,trace,"outperr");
592 atomic_sub(cnt , &q->number_of_buffers_used);
594 q->error_status_flags |=
595 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
596 q->qdio_error = SLSB_P_OUTPUT_ERROR;
597 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
598 q->first_to_check = ftc;
600 case SLSB_P_OUTPUT_EMPTY:
601 QDIO_DBF_TEXT5(0,trace,"outpempt");
602 atomic_sub(cnt, &q->number_of_buffers_used);
603 q->first_to_check = ftc;
605 case SLSB_CU_OUTPUT_PRIMED:
606 /* all buffers primed */
607 QDIO_DBF_TEXT5(0,trace,"outpprim");
612 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
613 return q->first_to_check;
617 qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q *q)
619 struct qdio_irq *irq;
621 int tmp, ftc, count, cnt;
625 irq = (struct qdio_irq *) q->irq_ptr;
626 ftc = q->first_to_check;
627 count = qdio_min(atomic_read(&q->number_of_buffers_used),
628 (QDIO_MAX_BUFFERS_PER_Q-1));
630 return q->first_to_check;
631 cnt = qdio_do_eqbs(q, &state, &ftc, &count);
633 return q->first_to_check;
635 case SLSB_P_INPUT_ERROR :
636 #ifdef CONFIG_QDIO_DEBUG
637 QDIO_DBF_TEXT3(1,trace,"inperr");
638 sprintf(dbf_text,"%2x,%2x",ftc,count);
639 QDIO_DBF_TEXT3(1,trace,dbf_text);
640 #endif /* CONFIG_QDIO_DEBUG */
642 q->error_status_flags |=
643 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
644 q->qdio_error = SLSB_P_INPUT_ERROR;
645 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
646 atomic_sub(cnt, &q->number_of_buffers_used);
647 q->first_to_check = ftc;
649 case SLSB_P_INPUT_PRIMED :
650 QDIO_DBF_TEXT3(0,trace,"inptprim");
651 sprintf(dbf_text,"%2x,%2x",ftc,count);
652 QDIO_DBF_TEXT3(1,trace,dbf_text);
654 ftc = q->first_to_check;
655 #ifdef QDIO_USE_PROCESSING_STATE
658 tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
663 tmp += set_slsb(q, &ftc,
664 SLSB_P_INPUT_PROCESSING, &cnt);
665 atomic_set(&q->polling, 1);
667 tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
669 atomic_sub(tmp, &q->number_of_buffers_used);
670 q->first_to_check = ftc;
672 case SLSB_CU_INPUT_EMPTY:
673 case SLSB_P_INPUT_NOT_INIT:
674 case SLSB_P_INPUT_PROCESSING:
675 QDIO_DBF_TEXT5(0,trace,"inpnipro");
680 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
681 return q->first_to_check;
685 qdio_get_outbound_buffer_frontier(struct qdio_q *q)
687 struct qdio_irq *irq;
689 unsigned int count = 1;
690 int first_not_to_check, f, f_mod_no;
693 QDIO_DBF_TEXT4(0,trace,"getobfro");
694 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
696 irq = (struct qdio_irq *) q->irq_ptr;
698 return qdio_qebsm_get_outbound_buffer_frontier(q);
700 slsb=&q->slsb.acc.val[0];
701 f_mod_no=f=q->first_to_check;
703 * f points to already processed elements, so f+no_used is correct...
704 * ... but: we don't check 128 buffers, as otherwise
705 * qdio_has_outbound_q_moved would return 0
707 first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
708 (QDIO_MAX_BUFFERS_PER_Q-1));
710 if ((!q->is_iqdio_q)&&(!q->hydra_gives_outbound_pcis))
714 if (f==first_not_to_check)
717 switch(slsb[f_mod_no]) {
719 /* the adapter has not fetched the output yet */
720 case SLSB_CU_OUTPUT_PRIMED:
721 QDIO_DBF_TEXT5(0,trace,"outpprim");
724 /* the adapter got it */
725 case SLSB_P_OUTPUT_EMPTY:
726 atomic_dec(&q->number_of_buffers_used);
728 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
729 QDIO_DBF_TEXT5(0,trace,"outpempt");
732 case SLSB_P_OUTPUT_ERROR:
733 QDIO_DBF_TEXT3(0,trace,"outperr");
734 sprintf(dbf_text,"%x-%x-%x",f_mod_no,
735 q->sbal[f_mod_no]->element[14].sbalf.value,
736 q->sbal[f_mod_no]->element[15].sbalf.value);
737 QDIO_DBF_TEXT3(1,trace,dbf_text);
738 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
740 /* kind of process the buffer */
741 set_slsb(q, &f_mod_no, SLSB_P_OUTPUT_NOT_INIT, &count);
744 * we increment the frontier, as this buffer
745 * was processed obviously
747 atomic_dec(&q->number_of_buffers_used);
748 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
751 q->error_status_flags|=
752 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
753 q->qdio_error=SLSB_P_OUTPUT_ERROR;
754 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
760 QDIO_DBF_TEXT5(0,trace,"outpni");
763 return (q->first_to_check=f_mod_no);
766 /* all buffers are processed */
768 qdio_is_outbound_q_done(struct qdio_q *q)
771 #ifdef CONFIG_QDIO_DEBUG
775 no_used=atomic_read(&q->number_of_buffers_used);
777 #ifdef CONFIG_QDIO_DEBUG
779 sprintf(dbf_text,"oqisnt%02x",no_used);
780 QDIO_DBF_TEXT4(0,trace,dbf_text);
782 QDIO_DBF_TEXT4(0,trace,"oqisdone");
784 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
785 #endif /* CONFIG_QDIO_DEBUG */
790 qdio_has_outbound_q_moved(struct qdio_q *q)
794 i=qdio_get_outbound_buffer_frontier(q);
796 if ( (i!=GET_SAVED_FRONTIER(q)) ||
797 (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
799 QDIO_DBF_TEXT4(0,trace,"oqhasmvd");
800 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
803 QDIO_DBF_TEXT4(0,trace,"oqhsntmv");
804 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
810 qdio_kick_outbound_q(struct qdio_q *q)
813 #ifdef CONFIG_QDIO_DEBUG
816 QDIO_DBF_TEXT4(0,trace,"kickoutq");
817 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
818 #endif /* CONFIG_QDIO_DEBUG */
823 /* here's the story with cc=2 and busy bit set (thanks, Rick):
824 * VM's CP could present us cc=2 and busy bit set on SIGA-write
825 * during reconfiguration of their Guest LAN (only in HIPERS mode,
826 * QDIO mode is asynchronous -- cc=2 and busy bit there will take
827 * the queues down immediately; and not being under VM we have a
828 * problem on cc=2 and busy bit set right away).
830 * Therefore qdio_siga_output will try for a short time constantly,
831 * if such a condition occurs. If it doesn't change, it will
832 * increase the busy_siga_counter and save the timestamp, and
833 * schedule the queue for later processing (via mark_q, using the
834 * queue tasklet). __qdio_outbound_processing will check out the
835 * counter. If non-zero, it will call qdio_kick_outbound_q as often
836 * as the value of the counter. This will attempt further SIGA
837 * instructions. For each successful SIGA, the counter is
838 * decreased, for failing SIGAs the counter remains the same, after
840 * After some time of no movement, qdio_kick_outbound_q will
841 * finally fail and reflect corresponding error codes to call
842 * the upper layer module and have it take the queues down.
844 * Note that this is a change from the original HiperSockets design
845 * (saying cc=2 and busy bit means take the queues down), but in
846 * these days Guest LAN didn't exist... excessive cc=2 with busy bit
847 * conditions will still take the queues down, but the threshold is
848 * higher due to the Guest LAN environment.
852 result=qdio_siga_output(q);
856 /* went smooth this time, reset timestamp */
857 #ifdef CONFIG_QDIO_DEBUG
858 QDIO_DBF_TEXT3(0,trace,"cc2reslv");
859 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
860 atomic_read(&q->busy_siga_counter));
861 QDIO_DBF_TEXT3(0,trace,dbf_text);
862 #endif /* CONFIG_QDIO_DEBUG */
863 q->timing.busy_start=0;
865 case (2|QDIO_SIGA_ERROR_B_BIT_SET):
866 /* cc=2 and busy bit: */
867 atomic_inc(&q->busy_siga_counter);
869 /* if the last siga was successful, save
871 if (!q->timing.busy_start)
872 q->timing.busy_start=NOW;
874 /* if we're in time, don't touch error_status_flags
876 if (NOW-q->timing.busy_start<QDIO_BUSY_BIT_GIVE_UP) {
880 QDIO_DBF_TEXT2(0,trace,"cc2REPRT");
881 #ifdef CONFIG_QDIO_DEBUG
882 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
883 atomic_read(&q->busy_siga_counter));
884 QDIO_DBF_TEXT3(0,trace,dbf_text);
885 #endif /* CONFIG_QDIO_DEBUG */
886 /* else fallthrough and report error */
888 /* for plain cc=1, 2 or 3: */
890 q->error_status_flags|=
891 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
892 q->error_status_flags|=
893 QDIO_STATUS_LOOK_FOR_ERROR;
894 q->siga_error=result;
899 qdio_kick_outbound_handler(struct qdio_q *q)
901 int start, end, real_end, count;
902 #ifdef CONFIG_QDIO_DEBUG
906 start = q->first_element_to_kick;
907 /* last_move_ftc was just updated */
908 real_end = GET_SAVED_FRONTIER(q);
909 end = (real_end+QDIO_MAX_BUFFERS_PER_Q-1)&
910 (QDIO_MAX_BUFFERS_PER_Q-1);
911 count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)&
912 (QDIO_MAX_BUFFERS_PER_Q-1);
914 #ifdef CONFIG_QDIO_DEBUG
915 QDIO_DBF_TEXT4(0,trace,"kickouth");
916 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
918 sprintf(dbf_text,"s=%2xc=%2x",start,count);
919 QDIO_DBF_TEXT4(0,trace,dbf_text);
920 #endif /* CONFIG_QDIO_DEBUG */
922 if (q->state==QDIO_IRQ_STATE_ACTIVE)
923 q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT|
924 q->error_status_flags,
925 q->qdio_error,q->siga_error,q->q_no,start,count,
928 /* for the next time: */
929 q->first_element_to_kick=real_end;
932 q->error_status_flags=0;
936 __qdio_outbound_processing(struct qdio_q *q)
940 QDIO_DBF_TEXT4(0,trace,"qoutproc");
941 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
943 if (unlikely(qdio_reserve_q(q))) {
945 #ifdef QDIO_PERFORMANCE_STATS
947 #endif /* QDIO_PERFORMANCE_STATS */
948 /* as we're sissies, we'll check next time */
949 if (likely(!atomic_read(&q->is_in_shutdown))) {
951 QDIO_DBF_TEXT4(0,trace,"busy,agn");
955 #ifdef QDIO_PERFORMANCE_STATS
957 perf_stats.tl_runs++;
958 #endif /* QDIO_PERFORMANCE_STATS */
960 /* see comment in qdio_kick_outbound_q */
961 siga_attempts=atomic_read(&q->busy_siga_counter);
962 while (siga_attempts) {
963 atomic_dec(&q->busy_siga_counter);
964 qdio_kick_outbound_q(q);
968 if (qdio_has_outbound_q_moved(q))
969 qdio_kick_outbound_handler(q);
973 * for asynchronous queues, we better check, if the fill
974 * level is too high. for synchronous queues, the fill
975 * level will never be that high.
977 if (atomic_read(&q->number_of_buffers_used)>
978 IQDIO_FILL_LEVEL_TO_POLL)
981 } else if (!q->hydra_gives_outbound_pcis)
982 if (!qdio_is_outbound_q_done(q))
989 qdio_outbound_processing(struct qdio_q *q)
991 __qdio_outbound_processing(q);
994 /************************* INBOUND ROUTINES *******************************/
998 qdio_get_inbound_buffer_frontier(struct qdio_q *q)
1000 struct qdio_irq *irq;
1002 volatile char *slsb;
1003 unsigned int count = 1;
1004 int first_not_to_check;
1005 #ifdef CONFIG_QDIO_DEBUG
1007 #endif /* CONFIG_QDIO_DEBUG */
1008 #ifdef QDIO_USE_PROCESSING_STATE
1009 int last_position=-1;
1010 #endif /* QDIO_USE_PROCESSING_STATE */
1012 QDIO_DBF_TEXT4(0,trace,"getibfro");
1013 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1015 irq = (struct qdio_irq *) q->irq_ptr;
1017 return qdio_qebsm_get_inbound_buffer_frontier(q);
1019 slsb=&q->slsb.acc.val[0];
1020 f_mod_no=f=q->first_to_check;
1022 * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1025 first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
1026 (QDIO_MAX_BUFFERS_PER_Q-1));
1029 * we don't use this one, as a PCI or we after a thin interrupt
1030 * will sync the queues
1035 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
1036 if (f==first_not_to_check)
1038 switch (slsb[f_mod_no]) {
1040 /* CU_EMPTY means frontier is reached */
1041 case SLSB_CU_INPUT_EMPTY:
1042 QDIO_DBF_TEXT5(0,trace,"inptempt");
1045 /* P_PRIMED means set slsb to P_PROCESSING and move on */
1046 case SLSB_P_INPUT_PRIMED:
1047 QDIO_DBF_TEXT5(0,trace,"inptprim");
1049 #ifdef QDIO_USE_PROCESSING_STATE
1051 * as soon as running under VM, polling the input queues will
1052 * kill VM in terms of CP overhead
1055 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1057 /* set the previous buffer to NOT_INIT. The current
1058 * buffer will be set to PROCESSING at the end of
1059 * this function to avoid further interrupts. */
1060 if (last_position>=0)
1061 set_slsb(q, &last_position,
1062 SLSB_P_INPUT_NOT_INIT, &count);
1063 atomic_set(&q->polling,1);
1064 last_position=f_mod_no;
1066 #else /* QDIO_USE_PROCESSING_STATE */
1067 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1068 #endif /* QDIO_USE_PROCESSING_STATE */
1070 * not needed, as the inbound queue will be synced on the next
1071 * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1075 atomic_dec(&q->number_of_buffers_used);
1078 case SLSB_P_INPUT_NOT_INIT:
1079 case SLSB_P_INPUT_PROCESSING:
1080 QDIO_DBF_TEXT5(0,trace,"inpnipro");
1083 /* P_ERROR means frontier is reached, break and report error */
1084 case SLSB_P_INPUT_ERROR:
1085 #ifdef CONFIG_QDIO_DEBUG
1086 sprintf(dbf_text,"inperr%2x",f_mod_no);
1087 QDIO_DBF_TEXT3(1,trace,dbf_text);
1088 #endif /* CONFIG_QDIO_DEBUG */
1089 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
1091 /* kind of process the buffer */
1092 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1095 q->error_status_flags|=
1096 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
1097 q->qdio_error=SLSB_P_INPUT_ERROR;
1098 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
1100 /* we increment the frontier, as this buffer
1101 * was processed obviously */
1102 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1103 atomic_dec(&q->number_of_buffers_used);
1105 #ifdef QDIO_USE_PROCESSING_STATE
1107 #endif /* QDIO_USE_PROCESSING_STATE */
1111 /* everything else means frontier not changed (HALTED or so) */
1116 q->first_to_check=f_mod_no;
1118 #ifdef QDIO_USE_PROCESSING_STATE
1119 if (last_position>=0)
1120 set_slsb(q, &last_position, SLSB_P_INPUT_NOT_INIT, &count);
1121 #endif /* QDIO_USE_PROCESSING_STATE */
1123 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
1125 return q->first_to_check;
1129 qdio_has_inbound_q_moved(struct qdio_q *q)
1133 #ifdef QDIO_PERFORMANCE_STATS
1134 static int old_pcis=0;
1135 static int old_thinints=0;
1137 if ((old_pcis==perf_stats.pcis)&&(old_thinints==perf_stats.thinints))
1138 perf_stats.start_time_inbound=NOW;
1140 old_pcis=perf_stats.pcis;
1141 #endif /* QDIO_PERFORMANCE_STATS */
1143 i=qdio_get_inbound_buffer_frontier(q);
1144 if ( (i!=GET_SAVED_FRONTIER(q)) ||
1145 (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
1147 if ((!q->siga_sync)&&(!q->hydra_gives_outbound_pcis))
1150 QDIO_DBF_TEXT4(0,trace,"inhasmvd");
1151 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1154 QDIO_DBF_TEXT4(0,trace,"inhsntmv");
1155 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1160 /* means, no more buffers to be filled */
1162 tiqdio_is_inbound_q_done(struct qdio_q *q)
1165 unsigned int start_buf, count;
1166 unsigned char state = 0;
1167 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1169 #ifdef CONFIG_QDIO_DEBUG
1173 no_used=atomic_read(&q->number_of_buffers_used);
1175 /* propagate the change from 82 to 80 through VM */
1178 #ifdef CONFIG_QDIO_DEBUG
1180 sprintf(dbf_text,"iqisnt%02x",no_used);
1181 QDIO_DBF_TEXT4(0,trace,dbf_text);
1183 QDIO_DBF_TEXT4(0,trace,"iniqisdo");
1185 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1186 #endif /* CONFIG_QDIO_DEBUG */
1192 /* we'll check for more primed buffers in qeth_stop_polling */
1194 if (irq->is_qebsm) {
1196 start_buf = q->first_to_check;
1197 qdio_do_eqbs(q, &state, &start_buf, &count);
1199 state = q->slsb.acc.val[q->first_to_check];
1200 if (state != SLSB_P_INPUT_PRIMED)
1202 * nothing more to do, if next buffer is not PRIMED.
1203 * note that we did a SYNC_MEMORY before, that there
1204 * has been a sychnronization.
1205 * we will return 0 below, as there is nothing to do
1206 * (stop_polling not necessary, as we have not been
1207 * using the PROCESSING state
1212 * ok, the next input buffer is primed. that means, that device state
1213 * change indicator and adapter local summary are set, so we will find
1215 * we will return 0 below, as there is nothing to do, except scheduling
1216 * ourselves for the next time.
1218 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1224 qdio_is_inbound_q_done(struct qdio_q *q)
1227 unsigned int start_buf, count;
1228 unsigned char state = 0;
1229 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1231 #ifdef CONFIG_QDIO_DEBUG
1235 no_used=atomic_read(&q->number_of_buffers_used);
1238 * we need that one for synchronization with the adapter, as it
1239 * does a kind of PCI avoidance
1244 QDIO_DBF_TEXT4(0,trace,"inqisdnA");
1245 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1246 QDIO_DBF_TEXT4(0,trace,dbf_text);
1249 if (irq->is_qebsm) {
1251 start_buf = q->first_to_check;
1252 qdio_do_eqbs(q, &state, &start_buf, &count);
1254 state = q->slsb.acc.val[q->first_to_check];
1255 if (state == SLSB_P_INPUT_PRIMED) {
1256 /* we got something to do */
1257 QDIO_DBF_TEXT4(0,trace,"inqisntA");
1258 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1262 /* on VM, we don't poll, so the q is always done here */
1265 if (q->hydra_gives_outbound_pcis)
1269 * at this point we know, that inbound first_to_check
1270 * has (probably) not moved (see qdio_inbound_processing)
1272 if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) {
1273 #ifdef CONFIG_QDIO_DEBUG
1274 QDIO_DBF_TEXT4(0,trace,"inqisdon");
1275 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1276 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1277 QDIO_DBF_TEXT4(0,trace,dbf_text);
1278 #endif /* CONFIG_QDIO_DEBUG */
1281 #ifdef CONFIG_QDIO_DEBUG
1282 QDIO_DBF_TEXT4(0,trace,"inqisntd");
1283 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1284 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1285 QDIO_DBF_TEXT4(0,trace,dbf_text);
1286 #endif /* CONFIG_QDIO_DEBUG */
1292 qdio_kick_inbound_handler(struct qdio_q *q)
1294 int count, start, end, real_end, i;
1295 #ifdef CONFIG_QDIO_DEBUG
1299 QDIO_DBF_TEXT4(0,trace,"kickinh");
1300 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1302 start=q->first_element_to_kick;
1303 real_end=q->first_to_check;
1304 end=(real_end+QDIO_MAX_BUFFERS_PER_Q-1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1312 i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1315 #ifdef CONFIG_QDIO_DEBUG
1316 sprintf(dbf_text,"s=%2xc=%2x",start,count);
1317 QDIO_DBF_TEXT4(0,trace,dbf_text);
1318 #endif /* CONFIG_QDIO_DEBUG */
1320 if (likely(q->state==QDIO_IRQ_STATE_ACTIVE))
1322 QDIO_STATUS_INBOUND_INT|q->error_status_flags,
1323 q->qdio_error,q->siga_error,q->q_no,start,count,
1326 /* for the next time: */
1327 q->first_element_to_kick=real_end;
1330 q->error_status_flags=0;
1332 #ifdef QDIO_PERFORMANCE_STATS
1333 perf_stats.inbound_time+=NOW-perf_stats.start_time_inbound;
1334 perf_stats.inbound_cnt++;
1335 #endif /* QDIO_PERFORMANCE_STATS */
1339 __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
1341 struct qdio_irq *irq_ptr;
1345 QDIO_DBF_TEXT4(0,trace,"iqinproc");
1346 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1349 * we first want to reserve the q, so that we know, that we don't
1350 * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1353 if (unlikely(qdio_reserve_q(q))) {
1355 #ifdef QDIO_PERFORMANCE_STATS
1357 #endif /* QDIO_PERFORMANCE_STATS */
1359 * as we might just be about to stop polling, we make
1360 * sure that we check again at least once more
1365 #ifdef QDIO_PERFORMANCE_STATS
1367 #endif /* QDIO_PERFORMANCE_STATS */
1368 if (unlikely(atomic_read(&q->is_in_shutdown))) {
1374 * we reset spare_ind_was_set, when the queue does not use the
1377 if (spare_ind_was_set)
1378 spare_ind_was_set = (q->dev_st_chg_ind == &spare_indicator);
1380 if (!(*(q->dev_st_chg_ind)) && !spare_ind_was_set)
1383 * q->dev_st_chg_ind is the indicator, be it shared or not.
1384 * only clear it, if indicator is non-shared
1386 if (!spare_ind_was_set)
1387 tiqdio_clear_summary_bit((__u32*)q->dev_st_chg_ind);
1389 if (q->hydra_gives_outbound_pcis) {
1390 if (!q->siga_sync_done_on_thinints) {
1392 } else if ((!q->siga_sync_done_on_outb_tis)&&
1393 (q->hydra_gives_outbound_pcis)) {
1394 SYNC_MEMORY_ALL_OUTB;
1400 * maybe we have to do work on our outbound queues... at least
1401 * we have to check the outbound-int-capable thinint-capable
1404 if (q->hydra_gives_outbound_pcis) {
1405 irq_ptr = (struct qdio_irq*)q->irq_ptr;
1406 for (i=0;i<irq_ptr->no_output_qs;i++) {
1407 oq = irq_ptr->output_qs[i];
1408 #ifdef QDIO_PERFORMANCE_STATS
1409 perf_stats.tl_runs--;
1410 #endif /* QDIO_PERFORMANCE_STATS */
1411 if (!qdio_is_outbound_q_done(oq))
1412 __qdio_outbound_processing(oq);
1416 if (!qdio_has_inbound_q_moved(q))
1419 qdio_kick_inbound_handler(q);
1420 if (tiqdio_is_inbound_q_done(q))
1421 if (!qdio_stop_polling(q)) {
1423 * we set the flags to get into the stuff next time,
1424 * see also comment in qdio_stop_polling
1426 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1434 tiqdio_inbound_processing(struct qdio_q *q)
1436 __tiqdio_inbound_processing(q, atomic_read(&spare_indicator_usecount));
1440 __qdio_inbound_processing(struct qdio_q *q)
1444 QDIO_DBF_TEXT4(0,trace,"qinproc");
1445 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1447 if (unlikely(qdio_reserve_q(q))) {
1449 #ifdef QDIO_PERFORMANCE_STATS
1451 #endif /* QDIO_PERFORMANCE_STATS */
1452 /* as we're sissies, we'll check next time */
1453 if (likely(!atomic_read(&q->is_in_shutdown))) {
1455 QDIO_DBF_TEXT4(0,trace,"busy,agn");
1459 #ifdef QDIO_PERFORMANCE_STATS
1461 perf_stats.tl_runs++;
1462 #endif /* QDIO_PERFORMANCE_STATS */
1465 if (qdio_has_inbound_q_moved(q)) {
1466 qdio_kick_inbound_handler(q);
1467 if (!qdio_stop_polling(q)) {
1469 if (q_laps<QDIO_Q_LAPS)
1474 if (!qdio_is_inbound_q_done(q))
1475 /* means poll time is not yet over */
1483 qdio_inbound_processing(struct qdio_q *q)
1485 __qdio_inbound_processing(q);
1488 /************************* MAIN ROUTINES *******************************/
1490 #ifdef QDIO_USE_PROCESSING_STATE
1492 tiqdio_reset_processing_state(struct qdio_q *q, int q_laps)
1500 * under VM, we have not used the PROCESSING state, so no
1501 * need to stop polling
1506 if (unlikely(qdio_reserve_q(q))) {
1508 #ifdef QDIO_PERFORMANCE_STATS
1510 #endif /* QDIO_PERFORMANCE_STATS */
1512 * as we might just be about to stop polling, we make
1513 * sure that we check again at least once more
1517 * sanity -- we'd get here without setting the
1520 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1524 if (qdio_stop_polling(q)) {
1528 if (q_laps<QDIO_Q_LAPS-1) {
1533 * we set the flags to get into the stuff
1534 * next time, see also comment in qdio_stop_polling
1536 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1542 #endif /* QDIO_USE_PROCESSING_STATE */
1545 tiqdio_inbound_checks(void)
1548 int spare_ind_was_set=0;
1549 #ifdef QDIO_USE_PROCESSING_STATE
1551 #endif /* QDIO_USE_PROCESSING_STATE */
1553 QDIO_DBF_TEXT4(0,trace,"iqdinbck");
1554 QDIO_DBF_TEXT5(0,trace,"iqlocsum");
1556 #ifdef QDIO_USE_PROCESSING_STATE
1558 #endif /* QDIO_USE_PROCESSING_STATE */
1560 /* when the spare indicator is used and set, save that and clear it */
1561 if ((atomic_read(&spare_indicator_usecount)) && spare_indicator) {
1562 spare_ind_was_set = 1;
1563 tiqdio_clear_summary_bit((__u32*)&spare_indicator);
1566 q=(struct qdio_q*)tiq_list;
1570 __tiqdio_inbound_processing(q, spare_ind_was_set);
1571 q=(struct qdio_q*)q->list_next;
1572 } while (q!=(struct qdio_q*)tiq_list);
1574 #ifdef QDIO_USE_PROCESSING_STATE
1575 q=(struct qdio_q*)tiq_list;
1579 ret = tiqdio_reset_processing_state(q, q_laps);
1586 q = (struct qdio_q*)q->list_next;
1592 } while (q!=(struct qdio_q*)tiq_list);
1593 #endif /* QDIO_USE_PROCESSING_STATE */
1597 tiqdio_tl(unsigned long data)
1599 QDIO_DBF_TEXT4(0,trace,"iqdio_tl");
1601 #ifdef QDIO_PERFORMANCE_STATS
1602 perf_stats.tl_runs++;
1603 #endif /* QDIO_PERFORMANCE_STATS */
1605 tiqdio_inbound_checks();
1608 /********************* GENERAL HELPER_ROUTINES ***********************/
1611 qdio_release_irq_memory(struct qdio_irq *irq_ptr)
1615 for (i=0;i<QDIO_MAX_QUEUES_PER_IRQ;i++) {
1616 if (!irq_ptr->input_qs[i])
1619 kfree(irq_ptr->input_qs[i]->slib);
1620 kfree(irq_ptr->input_qs[i]);
1623 if (!irq_ptr->output_qs[i])
1626 kfree(irq_ptr->output_qs[i]->slib);
1627 kfree(irq_ptr->output_qs[i]);
1630 kfree(irq_ptr->qdr);
1635 qdio_set_impl_params(struct qdio_irq *irq_ptr,
1636 unsigned int qib_param_field_format,
1637 /* pointer to 128 bytes or NULL, if no param field */
1638 unsigned char *qib_param_field,
1639 /* pointer to no_queues*128 words of data or NULL */
1640 unsigned int no_input_qs,
1641 unsigned int no_output_qs,
1642 unsigned long *input_slib_elements,
1643 unsigned long *output_slib_elements)
1650 irq_ptr->qib.pfmt=qib_param_field_format;
1651 if (qib_param_field)
1652 memcpy(irq_ptr->qib.parm,qib_param_field,
1653 QDIO_MAX_BUFFERS_PER_Q);
1655 if (input_slib_elements)
1656 for (i=0;i<no_input_qs;i++) {
1657 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1658 irq_ptr->input_qs[i]->slib->slibe[j].parms=
1659 input_slib_elements[
1660 i*QDIO_MAX_BUFFERS_PER_Q+j];
1662 if (output_slib_elements)
1663 for (i=0;i<no_output_qs;i++) {
1664 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1665 irq_ptr->output_qs[i]->slib->slibe[j].parms=
1666 output_slib_elements[
1667 i*QDIO_MAX_BUFFERS_PER_Q+j];
1672 qdio_alloc_qs(struct qdio_irq *irq_ptr,
1673 int no_input_qs, int no_output_qs)
1679 for (i=0;i<no_input_qs;i++) {
1680 q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL);
1683 QDIO_PRINT_ERR("kmalloc of q failed!\n");
1687 memset(q,0,sizeof(struct qdio_q));
1689 q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
1691 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1695 irq_ptr->input_qs[i]=q;
1698 for (i=0;i<no_output_qs;i++) {
1699 q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL);
1705 memset(q,0,sizeof(struct qdio_q));
1707 q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
1709 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1713 irq_ptr->output_qs[i]=q;
1722 qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev,
1723 int no_input_qs, int no_output_qs,
1724 qdio_handler_t *input_handler,
1725 qdio_handler_t *output_handler,
1726 unsigned long int_parm,int q_format,
1727 unsigned long flags,
1728 void **inbound_sbals_array,
1729 void **outbound_sbals_array)
1733 char dbf_text[20]; /* see qdio_initialize */
1737 sprintf(dbf_text,"qfqs%4x",cdev->private->sch_no);
1738 QDIO_DBF_TEXT0(0,setup,dbf_text);
1739 for (i=0;i<no_input_qs;i++) {
1740 q=irq_ptr->input_qs[i];
1742 memset(q,0,((char*)&q->slib)-((char*)q));
1743 sprintf(dbf_text,"in-q%4x",i);
1744 QDIO_DBF_TEXT0(0,setup,dbf_text);
1745 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1747 memset(q->slib,0,PAGE_SIZE);
1748 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1752 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1753 q->sbal[j]=*(inbound_sbals_array++);
1755 q->queue_type=q_format;
1756 q->int_parm=int_parm;
1757 q->schid = irq_ptr->schid;
1758 q->irq_ptr = irq_ptr;
1763 q->first_to_check=0;
1765 q->handler=input_handler;
1766 q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
1768 q->tasklet.data=(unsigned long)q;
1769 /* q->is_thinint_q isn't valid at this time, but
1770 * irq_ptr->is_thinint_irq is */
1771 q->tasklet.func=(void(*)(unsigned long))
1772 ((irq_ptr->is_thinint_irq)?&tiqdio_inbound_processing:
1773 &qdio_inbound_processing);
1775 /* actually this is not used for inbound queues. yet. */
1776 atomic_set(&q->busy_siga_counter,0);
1777 q->timing.busy_start=0;
1779 /* for (j=0;j<QDIO_STATS_NUMBER;j++)
1780 q->timing.last_transfer_times[j]=(qdio_get_micros()/
1781 QDIO_STATS_NUMBER)*j;
1782 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1786 if (i>0) irq_ptr->input_qs[i-1]->slib->nsliba=
1787 (unsigned long)(q->slib);
1788 q->slib->sla=(unsigned long)(q->sl);
1789 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1792 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1793 q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1795 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1797 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1798 ptr=(void*)&q->slsb;
1799 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1800 ptr=(void*)q->sbal[0];
1801 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1804 if (!irq_ptr->is_qebsm) {
1805 unsigned int count = 1;
1806 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
1807 set_slsb(q, &j, SLSB_P_INPUT_NOT_INIT, &count);
1811 for (i=0;i<no_output_qs;i++) {
1812 q=irq_ptr->output_qs[i];
1813 memset(q,0,((char*)&q->slib)-((char*)q));
1815 sprintf(dbf_text,"outq%4x",i);
1816 QDIO_DBF_TEXT0(0,setup,dbf_text);
1817 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1819 memset(q->slib,0,PAGE_SIZE);
1820 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1824 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1825 q->sbal[j]=*(outbound_sbals_array++);
1827 q->queue_type=q_format;
1828 q->int_parm=int_parm;
1830 q->schid = irq_ptr->schid;
1832 q->irq_ptr = irq_ptr;
1835 q->first_to_check=0;
1837 q->handler=output_handler;
1839 q->tasklet.data=(unsigned long)q;
1840 q->tasklet.func=(void(*)(unsigned long))
1841 &qdio_outbound_processing;
1843 atomic_set(&q->busy_siga_counter,0);
1844 q->timing.busy_start=0;
1847 if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba=
1848 (unsigned long)(q->slib);
1849 q->slib->sla=(unsigned long)(q->sl);
1850 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1853 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1854 q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1856 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1858 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1859 ptr=(void*)&q->slsb;
1860 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1861 ptr=(void*)q->sbal[0];
1862 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1865 if (!irq_ptr->is_qebsm) {
1866 unsigned int count = 1;
1867 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
1868 set_slsb(q, &j, SLSB_P_OUTPUT_NOT_INIT, &count);
1874 qdio_fill_thresholds(struct qdio_irq *irq_ptr,
1875 unsigned int no_input_qs,
1876 unsigned int no_output_qs,
1877 unsigned int min_input_threshold,
1878 unsigned int max_input_threshold,
1879 unsigned int min_output_threshold,
1880 unsigned int max_output_threshold)
1885 for (i=0;i<no_input_qs;i++) {
1886 q=irq_ptr->input_qs[i];
1887 q->timing.threshold=max_input_threshold;
1888 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1889 q->threshold_classes[j].threshold=
1890 min_input_threshold+
1891 (max_input_threshold-min_input_threshold)/
1894 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1896 for (i=0;i<no_output_qs;i++) {
1897 q=irq_ptr->output_qs[i];
1898 q->timing.threshold=max_output_threshold;
1899 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1900 q->threshold_classes[j].threshold=
1901 min_output_threshold+
1902 (max_output_threshold-min_output_threshold)/
1905 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1910 tiqdio_thinint_handler(void)
1912 QDIO_DBF_TEXT4(0,trace,"thin_int");
1914 #ifdef QDIO_PERFORMANCE_STATS
1915 perf_stats.thinints++;
1916 perf_stats.start_time_inbound=NOW;
1917 #endif /* QDIO_PERFORMANCE_STATS */
1919 /* SVS only when needed:
1920 * issue SVS to benefit from iqdio interrupt avoidance
1921 * (SVS clears AISOI)*/
1923 tiqdio_clear_global_summary();
1925 tiqdio_inbound_checks();
1930 qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state)
1933 #ifdef CONFIG_QDIO_DEBUG
1936 QDIO_DBF_TEXT5(0,trace,"newstate");
1937 sprintf(dbf_text,"%4x%4x",irq_ptr->schid.sch_no,state);
1938 QDIO_DBF_TEXT5(0,trace,dbf_text);
1939 #endif /* CONFIG_QDIO_DEBUG */
1941 irq_ptr->state=state;
1942 for (i=0;i<irq_ptr->no_input_qs;i++)
1943 irq_ptr->input_qs[i]->state=state;
1944 for (i=0;i<irq_ptr->no_output_qs;i++)
1945 irq_ptr->output_qs[i]->state=state;
1950 qdio_irq_check_sense(struct subchannel_id schid, struct irb *irb)
1954 if (irb->esw.esw0.erw.cons) {
1955 sprintf(dbf_text,"sens%4x",schid.sch_no);
1956 QDIO_DBF_TEXT2(1,trace,dbf_text);
1957 QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN);
1959 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1960 HEXDUMP16(WARN,"irb: ",irb);
1961 HEXDUMP16(WARN,"sense data: ",irb->ecw);
1967 qdio_handle_pci(struct qdio_irq *irq_ptr)
1972 #ifdef QDIO_PERFORMANCE_STATS
1974 perf_stats.start_time_inbound=NOW;
1975 #endif /* QDIO_PERFORMANCE_STATS */
1976 for (i=0;i<irq_ptr->no_input_qs;i++) {
1977 q=irq_ptr->input_qs[i];
1978 if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
1981 #ifdef QDIO_PERFORMANCE_STATS
1982 perf_stats.tl_runs--;
1983 #endif /* QDIO_PERFORMANCE_STATS */
1984 __qdio_inbound_processing(q);
1987 if (!irq_ptr->hydra_gives_outbound_pcis)
1989 for (i=0;i<irq_ptr->no_output_qs;i++) {
1990 q=irq_ptr->output_qs[i];
1991 #ifdef QDIO_PERFORMANCE_STATS
1992 perf_stats.tl_runs--;
1993 #endif /* QDIO_PERFORMANCE_STATS */
1994 if (qdio_is_outbound_q_done(q))
1996 if (!irq_ptr->sync_done_on_outb_pcis)
1998 __qdio_outbound_processing(q);
2002 static void qdio_establish_handle_irq(struct ccw_device*, int, int);
2005 qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm,
2006 int cstat, int dstat)
2008 struct qdio_irq *irq_ptr;
2012 irq_ptr = cdev->private->qdio_data;
2014 QDIO_DBF_TEXT2(1, trace, "ick2");
2015 sprintf(dbf_text,"%s", cdev->dev.bus_id);
2016 QDIO_DBF_TEXT2(1,trace,dbf_text);
2017 QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int));
2018 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2019 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2020 QDIO_PRINT_ERR("received check condition on activate " \
2021 "queues on device %s (cs=x%x, ds=x%x).\n",
2022 cdev->dev.bus_id, cstat, dstat);
2023 if (irq_ptr->no_input_qs) {
2024 q=irq_ptr->input_qs[0];
2025 } else if (irq_ptr->no_output_qs) {
2026 q=irq_ptr->output_qs[0];
2028 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2030 goto omit_handler_call;
2032 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
2033 QDIO_STATUS_LOOK_FOR_ERROR,
2034 0,0,0,-1,-1,q->int_parm);
2036 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED);
2041 qdio_call_shutdown(void *data)
2043 struct ccw_device *cdev;
2045 cdev = (struct ccw_device *)data;
2046 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2047 put_device(&cdev->dev);
2051 qdio_timeout_handler(struct ccw_device *cdev)
2053 struct qdio_irq *irq_ptr;
2056 QDIO_DBF_TEXT2(0, trace, "qtoh");
2057 sprintf(dbf_text, "%s", cdev->dev.bus_id);
2058 QDIO_DBF_TEXT2(0, trace, dbf_text);
2060 irq_ptr = cdev->private->qdio_data;
2061 sprintf(dbf_text, "state:%d", irq_ptr->state);
2062 QDIO_DBF_TEXT2(0, trace, dbf_text);
2064 switch (irq_ptr->state) {
2065 case QDIO_IRQ_STATE_INACTIVE:
2066 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
2067 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2068 QDIO_DBF_TEXT2(1,setup,"eq:timeo");
2069 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2071 case QDIO_IRQ_STATE_CLEANUP:
2072 QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
2074 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2075 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2077 case QDIO_IRQ_STATE_ESTABLISHED:
2078 case QDIO_IRQ_STATE_ACTIVE:
2079 /* I/O has been terminated by common I/O layer. */
2080 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2081 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2082 QDIO_DBF_TEXT2(1, trace, "cio:term");
2083 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
2084 if (get_device(&cdev->dev)) {
2085 /* Can't call shutdown from interrupt context. */
2086 PREPARE_WORK(&cdev->private->kick_work,
2087 qdio_call_shutdown, (void *)cdev);
2088 queue_work(ccw_device_work, &cdev->private->kick_work);
2094 ccw_device_set_timeout(cdev, 0);
2095 wake_up(&cdev->private->wait_q);
2099 qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
2101 struct qdio_irq *irq_ptr;
2105 #ifdef CONFIG_QDIO_DEBUG
2106 QDIO_DBF_TEXT4(0, trace, "qint");
2107 sprintf(dbf_text, "%s", cdev->dev.bus_id);
2108 QDIO_DBF_TEXT4(0, trace, dbf_text);
2109 #endif /* CONFIG_QDIO_DEBUG */
2112 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2113 "handler, device %s\n", cdev->dev.bus_id);
2117 irq_ptr = cdev->private->qdio_data;
2119 QDIO_DBF_TEXT2(1, trace, "uint");
2120 sprintf(dbf_text,"%s", cdev->dev.bus_id);
2121 QDIO_DBF_TEXT2(1,trace,dbf_text);
2122 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2128 /* Currently running i/o is in error. */
2129 switch (PTR_ERR(irb)) {
2131 QDIO_PRINT_ERR("i/o error on device %s\n",
2135 qdio_timeout_handler(cdev);
2138 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2139 PTR_ERR(irb), cdev->dev.bus_id);
2144 qdio_irq_check_sense(irq_ptr->schid, irb);
2146 #ifdef CONFIG_QDIO_DEBUG
2147 sprintf(dbf_text, "state:%d", irq_ptr->state);
2148 QDIO_DBF_TEXT4(0, trace, dbf_text);
2149 #endif /* CONFIG_QDIO_DEBUG */
2151 cstat = irb->scsw.cstat;
2152 dstat = irb->scsw.dstat;
2154 switch (irq_ptr->state) {
2155 case QDIO_IRQ_STATE_INACTIVE:
2156 qdio_establish_handle_irq(cdev, cstat, dstat);
2159 case QDIO_IRQ_STATE_CLEANUP:
2160 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2163 case QDIO_IRQ_STATE_ESTABLISHED:
2164 case QDIO_IRQ_STATE_ACTIVE:
2165 if (cstat & SCHN_STAT_PCI) {
2166 qdio_handle_pci(irq_ptr);
2170 if ((cstat&~SCHN_STAT_PCI)||dstat) {
2171 qdio_handle_activate_check(cdev, intparm, cstat, dstat);
2175 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2177 irq_ptr->state, cdev->dev.bus_id);
2179 wake_up(&cdev->private->wait_q);
2184 qdio_synchronize(struct ccw_device *cdev, unsigned int flags,
2185 unsigned int queue_number)
2189 struct qdio_irq *irq_ptr;
2191 #ifdef CONFIG_QDIO_DEBUG
2192 char dbf_text[15]="SyncXXXX";
2195 irq_ptr = cdev->private->qdio_data;
2199 #ifdef CONFIG_QDIO_DEBUG
2200 *((int*)(&dbf_text[4])) = irq_ptr->schid.sch_no;
2201 QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2202 *((int*)(&dbf_text[0]))=flags;
2203 *((int*)(&dbf_text[4]))=queue_number;
2204 QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2205 #endif /* CONFIG_QDIO_DEBUG */
2207 if (flags&QDIO_FLAG_SYNC_INPUT) {
2208 q=irq_ptr->input_qs[queue_number];
2211 if (!(irq_ptr->is_qebsm))
2212 cc = do_siga_sync(q->schid, 0, q->mask);
2213 } else if (flags&QDIO_FLAG_SYNC_OUTPUT) {
2214 q=irq_ptr->output_qs[queue_number];
2217 if (!(irq_ptr->is_qebsm))
2218 cc = do_siga_sync(q->schid, q->mask, 0);
2224 QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int));
2230 qdio_check_subchannel_qebsm(struct qdio_irq *irq_ptr, unsigned char qdioac,
2231 unsigned long token)
2235 unsigned int count, start_buf;
2238 /*check if QEBSM is disabled */
2239 if (!(irq_ptr->is_qebsm) || !(qdioac & 0x01)) {
2240 irq_ptr->is_qebsm = 0;
2241 irq_ptr->sch_token = 0;
2242 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2243 QDIO_DBF_TEXT0(0,setup,"noV=V");
2246 irq_ptr->sch_token = token;
2248 for (i = 0; i < irq_ptr->no_input_qs;i++) {
2249 q = irq_ptr->input_qs[i];
2250 count = QDIO_MAX_BUFFERS_PER_Q;
2252 set_slsb(q, &start_buf, SLSB_P_INPUT_NOT_INIT, &count);
2254 sprintf(dbf_text,"V=V:%2x",irq_ptr->is_qebsm);
2255 QDIO_DBF_TEXT0(0,setup,dbf_text);
2256 sprintf(dbf_text,"%8lx",irq_ptr->sch_token);
2257 QDIO_DBF_TEXT0(0,setup,dbf_text);
2259 for (i = 0; i < irq_ptr->no_output_qs; i++) {
2260 q = irq_ptr->output_qs[i];
2261 count = QDIO_MAX_BUFFERS_PER_Q;
2263 set_slsb(q, &start_buf, SLSB_P_OUTPUT_NOT_INIT, &count);
2268 qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
2271 unsigned char qdioac;
2273 struct chsc_header request;
2281 struct chsc_header response;
2300 QDIO_DBF_TEXT0(0,setup,"getssqd");
2302 ssqd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
2304 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2305 "SIGAs for sch x%x.\n", irq_ptr->schid.sch_no);
2306 irq_ptr->qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2307 CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2308 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2309 irq_ptr->is_qebsm = 0;
2310 irq_ptr->sch_token = 0;
2311 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2315 ssqd_area->request = (struct chsc_header) {
2319 ssqd_area->first_sch = irq_ptr->schid.sch_no;
2320 ssqd_area->last_sch = irq_ptr->schid.sch_no;
2321 ssqd_area->ssid = irq_ptr->schid.ssid;
2322 result = chsc(ssqd_area);
2325 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
2326 "SIGAs for sch 0.%x.%x.\n", result,
2327 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2328 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2329 CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2330 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2331 irq_ptr->is_qebsm = 0;
2335 if (ssqd_area->response.code != QDIO_CHSC_RESPONSE_CODE_OK) {
2336 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2337 "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n",
2338 ssqd_area->response.code,
2339 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2340 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2341 CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2342 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2343 irq_ptr->is_qebsm = 0;
2346 if (!(ssqd_area->flags & CHSC_FLAG_QDIO_CAPABILITY) ||
2347 !(ssqd_area->flags & CHSC_FLAG_VALIDITY) ||
2348 (ssqd_area->sch != irq_ptr->schid.sch_no)) {
2349 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2350 "using all SIGAs.\n",
2351 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2352 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2353 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2354 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* worst case */
2355 irq_ptr->is_qebsm = 0;
2358 qdioac = ssqd_area->qdioac1;
2360 qdio_check_subchannel_qebsm(irq_ptr, qdioac,
2361 ssqd_area->sch_token);
2362 free_page ((unsigned long) ssqd_area);
2363 irq_ptr->qdioac = qdioac;
2367 tiqdio_check_chsc_availability(void)
2371 if (!css_characteristics_avail)
2374 /* Check for bit 41. */
2375 if (!css_general_characteristics.aif) {
2376 QDIO_PRINT_WARN("Adapter interruption facility not " \
2381 /* Check for bits 107 and 108. */
2382 if (!css_chsc_characteristics.scssc ||
2383 !css_chsc_characteristics.scsscf) {
2384 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2385 "not available.\n");
2389 /* Check for OSA/FCP thin interrupts (bit 67). */
2390 hydra_thinints = css_general_characteristics.aif_osa;
2391 sprintf(dbf_text,"hydrati%1x", hydra_thinints);
2392 QDIO_DBF_TEXT0(0,setup,dbf_text);
2395 /* Check for QEBSM support in general (bit 58). */
2396 is_passthrough = css_general_characteristics.qebsm;
2398 sprintf(dbf_text,"cssQBS:%1x", is_passthrough);
2399 QDIO_DBF_TEXT0(0,setup,dbf_text);
2401 /* Check for aif time delay disablement fac (bit 56). If installed,
2402 * omit svs even under lpar (good point by rick again) */
2403 omit_svs = css_general_characteristics.aif_tdd;
2404 sprintf(dbf_text,"omitsvs%1x", omit_svs);
2405 QDIO_DBF_TEXT0(0,setup,dbf_text);
2411 tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2413 unsigned long real_addr_local_summary_bit;
2414 unsigned long real_addr_dev_st_chg_ind;
2418 unsigned int resp_code;
2422 struct chsc_header request;
2427 u64 summary_indicator_addr;
2428 u64 subchannel_indicator_addr;
2433 u32 word_with_d_bit;
2434 /* set to 0x10000000 to enable
2435 * time delay disablement facility */
2437 struct subchannel_id schid;
2438 u32 reserved6[1004];
2439 struct chsc_header response;
2443 if (!irq_ptr->is_thinint_irq)
2446 if (reset_to_zero) {
2447 real_addr_local_summary_bit=0;
2448 real_addr_dev_st_chg_ind=0;
2450 real_addr_local_summary_bit=
2451 virt_to_phys((volatile void *)indicators);
2452 real_addr_dev_st_chg_ind=
2453 virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
2456 scssc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
2458 QDIO_PRINT_WARN("No memory for setting indicators on " \
2459 "subchannel 0.%x.%x.\n",
2460 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2463 scssc_area->request = (struct chsc_header) {
2467 scssc_area->operation_code = 0;
2469 scssc_area->summary_indicator_addr = real_addr_local_summary_bit;
2470 scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind;
2471 scssc_area->ks = QDIO_STORAGE_KEY;
2472 scssc_area->kc = QDIO_STORAGE_KEY;
2473 scssc_area->isc = TIQDIO_THININT_ISC;
2474 scssc_area->schid = irq_ptr->schid;
2475 /* enables the time delay disablement facility. Don't care
2476 * whether it is really there (i.e. we haven't checked for
2478 if (css_general_characteristics.aif_tdd)
2479 scssc_area->word_with_d_bit = 0x10000000;
2481 QDIO_PRINT_WARN("Time delay disablement facility " \
2484 result = chsc(scssc_area);
2486 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2488 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,result);
2493 resp_code = scssc_area->response.code;
2494 if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2495 QDIO_PRINT_WARN("response upon setting indicators " \
2496 "is 0x%x.\n",resp_code);
2497 sprintf(dbf_text,"sidR%4x",resp_code);
2498 QDIO_DBF_TEXT1(0,trace,dbf_text);
2499 QDIO_DBF_TEXT1(0,setup,dbf_text);
2500 ptr=&scssc_area->response;
2501 QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN);
2506 QDIO_DBF_TEXT2(0,setup,"setscind");
2507 QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit,
2508 sizeof(unsigned long));
2509 QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
2512 free_page ((unsigned long) scssc_area);
2518 tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2520 unsigned int resp_code;
2526 struct chsc_header request;
2533 u32 reserved5[1009];
2534 struct chsc_header response;
2538 if (!irq_ptr->is_thinint_irq)
2541 scsscf_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
2543 QDIO_PRINT_WARN("No memory for setting delay target on " \
2544 "subchannel 0.%x.%x.\n",
2545 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2548 scsscf_area->request = (struct chsc_header) {
2553 scsscf_area->delay_target = delay_target<<16;
2555 result=chsc(scsscf_area);
2557 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2558 "cc=%i. Continuing.\n",
2559 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2565 resp_code = scsscf_area->response.code;
2566 if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2567 QDIO_PRINT_WARN("response upon setting delay target " \
2568 "is 0x%x. Continuing.\n",resp_code);
2569 sprintf(dbf_text,"sdtR%4x",resp_code);
2570 QDIO_DBF_TEXT1(0,trace,dbf_text);
2571 QDIO_DBF_TEXT1(0,setup,dbf_text);
2572 ptr=&scsscf_area->response;
2573 QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN);
2575 QDIO_DBF_TEXT2(0,trace,"delytrgt");
2576 QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
2577 result = 0; /* not critical */
2579 free_page ((unsigned long) scsscf_area);
2584 qdio_cleanup(struct ccw_device *cdev, int how)
2586 struct qdio_irq *irq_ptr;
2590 irq_ptr = cdev->private->qdio_data;
2594 sprintf(dbf_text,"qcln%4x",irq_ptr->schid.sch_no);
2595 QDIO_DBF_TEXT1(0,trace,dbf_text);
2596 QDIO_DBF_TEXT0(0,setup,dbf_text);
2598 rc = qdio_shutdown(cdev, how);
2599 if ((rc == 0) || (rc == -EINPROGRESS))
2600 rc = qdio_free(cdev);
2605 qdio_shutdown(struct ccw_device *cdev, int how)
2607 struct qdio_irq *irq_ptr;
2611 unsigned long flags;
2615 irq_ptr = cdev->private->qdio_data;
2619 down(&irq_ptr->setting_up_sema);
2621 sprintf(dbf_text,"qsqs%4x",irq_ptr->schid.sch_no);
2622 QDIO_DBF_TEXT1(0,trace,dbf_text);
2623 QDIO_DBF_TEXT0(0,setup,dbf_text);
2625 /* mark all qs as uninteresting */
2626 for (i=0;i<irq_ptr->no_input_qs;i++)
2627 atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1);
2629 for (i=0;i<irq_ptr->no_output_qs;i++)
2630 atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1);
2632 tasklet_kill(&tiqdio_tasklet);
2634 for (i=0;i<irq_ptr->no_input_qs;i++) {
2635 qdio_unmark_q(irq_ptr->input_qs[i]);
2636 tasklet_kill(&irq_ptr->input_qs[i]->tasklet);
2637 wait_event_interruptible_timeout(cdev->private->wait_q,
2638 !atomic_read(&irq_ptr->
2641 QDIO_NO_USE_COUNT_TIMEOUT);
2642 if (atomic_read(&irq_ptr->input_qs[i]->use_count))
2643 result=-EINPROGRESS;
2646 for (i=0;i<irq_ptr->no_output_qs;i++) {
2647 tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
2648 wait_event_interruptible_timeout(cdev->private->wait_q,
2649 !atomic_read(&irq_ptr->
2652 QDIO_NO_USE_COUNT_TIMEOUT);
2653 if (atomic_read(&irq_ptr->output_qs[i]->use_count))
2654 result=-EINPROGRESS;
2657 /* cleanup subchannel */
2658 spin_lock_irqsave(get_ccwdev_lock(cdev),flags);
2659 if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) {
2660 rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
2661 timeout=QDIO_CLEANUP_CLEAR_TIMEOUT;
2662 } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) {
2663 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2664 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2665 } else { /* default behaviour */
2666 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2667 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2669 if (rc == -ENODEV) {
2670 /* No need to wait for device no longer present. */
2671 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2672 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2673 } else if (((void *)cdev->handler != (void *)qdio_handler) && rc == 0) {
2675 * Whoever put another handler there, has to cope with the
2676 * interrupt theirself. Might happen if qdio_shutdown was
2677 * called on already shutdown queues, but this shouldn't have
2680 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2681 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2682 } else if (rc == 0) {
2683 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
2684 ccw_device_set_timeout(cdev, timeout);
2685 spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags);
2687 wait_event(cdev->private->wait_q,
2688 irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
2689 irq_ptr->state == QDIO_IRQ_STATE_ERR);
2691 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2692 "device %s\n", result, cdev->dev.bus_id);
2693 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2697 if (irq_ptr->is_thinint_irq) {
2698 qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind);
2699 tiqdio_set_subchannel_ind(irq_ptr,1);
2700 /* reset adapter interrupt indicators */
2703 /* exchange int handlers, if necessary */
2704 if ((void*)cdev->handler == (void*)qdio_handler)
2705 cdev->handler=irq_ptr->original_int_handler;
2707 /* Ignore errors. */
2708 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2709 ccw_device_set_timeout(cdev, 0);
2711 up(&irq_ptr->setting_up_sema);
2716 qdio_free(struct ccw_device *cdev)
2718 struct qdio_irq *irq_ptr;
2721 irq_ptr = cdev->private->qdio_data;
2725 down(&irq_ptr->setting_up_sema);
2727 sprintf(dbf_text,"qfqs%4x",irq_ptr->schid.sch_no);
2728 QDIO_DBF_TEXT1(0,trace,dbf_text);
2729 QDIO_DBF_TEXT0(0,setup,dbf_text);
2731 cdev->private->qdio_data = 0;
2733 up(&irq_ptr->setting_up_sema);
2735 qdio_release_irq_memory(irq_ptr);
2736 module_put(THIS_MODULE);
2741 qdio_allocate_do_dbf(struct qdio_initialize *init_data)
2743 char dbf_text[20]; /* if a printf printed out more than 8 chars */
2745 sprintf(dbf_text,"qfmt:%x",init_data->q_format);
2746 QDIO_DBF_TEXT0(0,setup,dbf_text);
2747 QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8);
2748 sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format);
2749 QDIO_DBF_TEXT0(0,setup,dbf_text);
2750 QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*));
2751 QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*));
2752 QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*));
2753 sprintf(dbf_text,"miit%4x",init_data->min_input_threshold);
2754 QDIO_DBF_TEXT0(0,setup,dbf_text);
2755 sprintf(dbf_text,"mait%4x",init_data->max_input_threshold);
2756 QDIO_DBF_TEXT0(0,setup,dbf_text);
2757 sprintf(dbf_text,"miot%4x",init_data->min_output_threshold);
2758 QDIO_DBF_TEXT0(0,setup,dbf_text);
2759 sprintf(dbf_text,"maot%4x",init_data->max_output_threshold);
2760 QDIO_DBF_TEXT0(0,setup,dbf_text);
2761 sprintf(dbf_text,"niq:%4x",init_data->no_input_qs);
2762 QDIO_DBF_TEXT0(0,setup,dbf_text);
2763 sprintf(dbf_text,"noq:%4x",init_data->no_output_qs);
2764 QDIO_DBF_TEXT0(0,setup,dbf_text);
2765 QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*));
2766 QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*));
2767 QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long));
2768 QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long));
2769 QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*));
2770 QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*));
2774 qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt)
2776 irq_ptr->input_qs[i]->is_iqdio_q = iqfmt;
2777 irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2779 irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib);
2781 irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl);
2783 irq_ptr->qdr->qdf0[i].slsba=
2784 (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]);
2786 irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY;
2787 irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY;
2788 irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY;
2789 irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY;
2793 qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i,
2796 irq_ptr->output_qs[i]->is_iqdio_q = iqfmt;
2797 irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2799 irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib);
2801 irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl);
2803 irq_ptr->qdr->qdf0[i+j].slsba=
2804 (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]);
2806 irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY;
2807 irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY;
2808 irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY;
2809 irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY;
2814 qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr)
2818 for (i=0;i<irq_ptr->no_input_qs;i++) {
2819 irq_ptr->input_qs[i]->siga_sync=
2820 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2821 irq_ptr->input_qs[i]->siga_in=
2822 irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2823 irq_ptr->input_qs[i]->siga_out=
2824 irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2825 irq_ptr->input_qs[i]->siga_sync_done_on_thinints=
2826 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2827 irq_ptr->input_qs[i]->hydra_gives_outbound_pcis=
2828 irq_ptr->hydra_gives_outbound_pcis;
2829 irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis=
2831 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2832 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2833 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2834 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2840 qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr)
2844 for (i=0;i<irq_ptr->no_output_qs;i++) {
2845 irq_ptr->output_qs[i]->siga_sync=
2846 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2847 irq_ptr->output_qs[i]->siga_in=
2848 irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2849 irq_ptr->output_qs[i]->siga_out=
2850 irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2851 irq_ptr->output_qs[i]->siga_sync_done_on_thinints=
2852 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2853 irq_ptr->output_qs[i]->hydra_gives_outbound_pcis=
2854 irq_ptr->hydra_gives_outbound_pcis;
2855 irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis=
2857 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2858 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2859 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2860 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2866 qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat,
2870 struct qdio_irq *irq_ptr;
2872 irq_ptr = cdev->private->qdio_data;
2874 if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) {
2875 sprintf(dbf_text,"ick1%4x",irq_ptr->schid.sch_no);
2876 QDIO_DBF_TEXT2(1,trace,dbf_text);
2877 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2878 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2879 QDIO_PRINT_ERR("received check condition on establish " \
2880 "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2881 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2883 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR);
2886 if (!(dstat & DEV_STAT_DEV_END)) {
2887 QDIO_DBF_TEXT2(1,setup,"eq:no de");
2888 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2889 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2890 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
2891 "device end: dstat=%02x, cstat=%02x\n",
2892 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2894 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2898 if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) {
2899 QDIO_DBF_TEXT2(1,setup,"eq:badio");
2900 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2901 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2902 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
2903 "the following devstat: dstat=%02x, "
2904 "cstat=%02x\n", irq_ptr->schid.ssid,
2905 irq_ptr->schid.sch_no, dstat, cstat);
2906 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2913 qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat)
2915 struct qdio_irq *irq_ptr;
2918 irq_ptr = cdev->private->qdio_data;
2920 sprintf(dbf_text,"qehi%4x",cdev->private->sch_no);
2921 QDIO_DBF_TEXT0(0,setup,dbf_text);
2922 QDIO_DBF_TEXT0(0,trace,dbf_text);
2924 if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat)) {
2925 ccw_device_set_timeout(cdev, 0);
2929 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED);
2930 ccw_device_set_timeout(cdev, 0);
2934 qdio_initialize(struct qdio_initialize *init_data)
2939 sprintf(dbf_text,"qini%4x",init_data->cdev->private->sch_no);
2940 QDIO_DBF_TEXT0(0,setup,dbf_text);
2941 QDIO_DBF_TEXT0(0,trace,dbf_text);
2943 rc = qdio_allocate(init_data);
2945 rc = qdio_establish(init_data);
2947 qdio_free(init_data->cdev);
2955 qdio_allocate(struct qdio_initialize *init_data)
2957 struct qdio_irq *irq_ptr;
2960 sprintf(dbf_text,"qalc%4x",init_data->cdev->private->sch_no);
2961 QDIO_DBF_TEXT0(0,setup,dbf_text);
2962 QDIO_DBF_TEXT0(0,trace,dbf_text);
2963 if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2964 (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2965 ((init_data->no_input_qs) && (!init_data->input_handler)) ||
2966 ((init_data->no_output_qs) && (!init_data->output_handler)) )
2969 if (!init_data->input_sbal_addr_array)
2972 if (!init_data->output_sbal_addr_array)
2975 qdio_allocate_do_dbf(init_data);
2978 irq_ptr=kmalloc(sizeof(struct qdio_irq), GFP_KERNEL | GFP_DMA);
2980 QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
2981 QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
2984 QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n");
2988 memset(irq_ptr,0,sizeof(struct qdio_irq));
2990 init_MUTEX(&irq_ptr->setting_up_sema);
2992 /* QDR must be in DMA area since CCW data address is only 32 bit */
2993 irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
2994 if (!(irq_ptr->qdr)) {
2996 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
2999 QDIO_DBF_TEXT0(0,setup,"qdr:");
3000 QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*));
3002 if (qdio_alloc_qs(irq_ptr,
3003 init_data->no_input_qs,
3004 init_data->no_output_qs)) {
3005 qdio_release_irq_memory(irq_ptr);
3009 init_data->cdev->private->qdio_data = irq_ptr;
3011 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE);
3016 int qdio_fill_irq(struct qdio_initialize *init_data)
3022 struct qdio_irq *irq_ptr;
3024 irq_ptr = init_data->cdev->private->qdio_data;
3026 memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr));
3028 /* wipes qib.ac, required by ar7063 */
3029 memset(irq_ptr->qdr,0,sizeof(struct qdr));
3031 irq_ptr->int_parm=init_data->int_parm;
3033 irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
3034 irq_ptr->no_input_qs=init_data->no_input_qs;
3035 irq_ptr->no_output_qs=init_data->no_output_qs;
3037 if (init_data->q_format==QDIO_IQDIO_QFMT) {
3038 irq_ptr->is_iqdio_irq=1;
3039 irq_ptr->is_thinint_irq=1;
3041 irq_ptr->is_iqdio_irq=0;
3042 irq_ptr->is_thinint_irq=hydra_thinints;
3044 sprintf(dbf_text,"is_i_t%1x%1x",
3045 irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq);
3046 QDIO_DBF_TEXT2(0,setup,dbf_text);
3048 if (irq_ptr->is_thinint_irq) {
3049 irq_ptr->dev_st_chg_ind = qdio_get_indicator();
3050 QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*));
3051 if (!irq_ptr->dev_st_chg_ind) {
3052 QDIO_PRINT_WARN("no indicator location available " \
3053 "for irq 0.%x.%x\n",
3054 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
3055 qdio_release_irq_memory(irq_ptr);
3061 irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD;
3062 irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT;
3063 irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD;
3064 irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT;
3066 qdio_fill_qs(irq_ptr, init_data->cdev,
3067 init_data->no_input_qs,
3068 init_data->no_output_qs,
3069 init_data->input_handler,
3070 init_data->output_handler,init_data->int_parm,
3071 init_data->q_format,init_data->flags,
3072 init_data->input_sbal_addr_array,
3073 init_data->output_sbal_addr_array);
3075 if (!try_module_get(THIS_MODULE)) {
3076 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3077 qdio_release_irq_memory(irq_ptr);
3081 qdio_fill_thresholds(irq_ptr,init_data->no_input_qs,
3082 init_data->no_output_qs,
3083 init_data->min_input_threshold,
3084 init_data->max_input_threshold,
3085 init_data->min_output_threshold,
3086 init_data->max_output_threshold);
3089 irq_ptr->qdr->qfmt=init_data->q_format;
3090 irq_ptr->qdr->iqdcnt=init_data->no_input_qs;
3091 irq_ptr->qdr->oqdcnt=init_data->no_output_qs;
3092 irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */
3093 irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4;
3095 irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib;
3096 irq_ptr->qdr->qkey=QDIO_STORAGE_KEY;
3099 irq_ptr->is_qebsm = is_passthrough;
3100 if (irq_ptr->is_qebsm)
3101 irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
3103 irq_ptr->qib.qfmt=init_data->q_format;
3104 if (init_data->no_input_qs)
3105 irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib);
3106 if (init_data->no_output_qs)
3107 irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib);
3108 memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8);
3110 qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format,
3111 init_data->qib_param_field,
3112 init_data->no_input_qs,
3113 init_data->no_output_qs,
3114 init_data->input_slib_elements,
3115 init_data->output_slib_elements);
3117 /* first input descriptors, then output descriptors */
3118 is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0;
3119 for (i=0;i<init_data->no_input_qs;i++)
3120 qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio);
3122 for (i=0;i<init_data->no_output_qs;i++)
3123 qdio_allocate_fill_output_desc(irq_ptr, i,
3124 init_data->no_input_qs,
3127 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3129 /* get qdio commands */
3130 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
3132 QDIO_DBF_TEXT2(1,setup,"no eq");
3133 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3134 "Trying to use default.\n");
3136 irq_ptr->equeue = *ciw;
3137 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
3139 QDIO_DBF_TEXT2(1,setup,"no aq");
3140 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3141 "Trying to use default.\n");
3143 irq_ptr->aqueue = *ciw;
3145 /* Set new interrupt handler. */
3146 irq_ptr->original_int_handler = init_data->cdev->handler;
3147 init_data->cdev->handler = qdio_handler;
3153 qdio_establish(struct qdio_initialize *init_data)
3155 struct qdio_irq *irq_ptr;
3156 unsigned long saveflags;
3157 int result, result2;
3158 struct ccw_device *cdev;
3161 cdev=init_data->cdev;
3162 irq_ptr = cdev->private->qdio_data;
3166 if (cdev->private->state != DEV_STATE_ONLINE)
3169 down(&irq_ptr->setting_up_sema);
3171 qdio_fill_irq(init_data);
3173 /* the thinint CHSC stuff */
3174 if (irq_ptr->is_thinint_irq) {
3176 result = tiqdio_set_subchannel_ind(irq_ptr,0);
3178 up(&irq_ptr->setting_up_sema);
3179 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3182 tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET);
3185 sprintf(dbf_text,"qest%4x",cdev->private->sch_no);
3186 QDIO_DBF_TEXT0(0,setup,dbf_text);
3187 QDIO_DBF_TEXT0(0,trace,dbf_text);
3190 irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd;
3191 irq_ptr->ccw.flags=CCW_FLAG_SLI;
3192 irq_ptr->ccw.count=irq_ptr->equeue.count;
3193 irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr);
3195 spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3197 ccw_device_set_options(cdev, 0);
3198 result=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3199 QDIO_DOING_ESTABLISH,0, 0,
3200 QDIO_ESTABLISH_TIMEOUT);
3202 result2=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3203 QDIO_DOING_ESTABLISH,0,0,
3204 QDIO_ESTABLISH_TIMEOUT);
3205 sprintf(dbf_text,"eq:io%4x",result);
3206 QDIO_DBF_TEXT2(1,setup,dbf_text);
3208 sprintf(dbf_text,"eq:io%4x",result);
3209 QDIO_DBF_TEXT2(1,setup,dbf_text);
3211 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3212 "returned %i, next try returned %i\n",
3213 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3217 ccw_device_set_timeout(cdev, 0);
3220 spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3223 up(&irq_ptr->setting_up_sema);
3224 qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR);
3228 /* Timeout is cared for already by using ccw_device_start_timeout(). */
3229 wait_event_interruptible(cdev->private->wait_q,
3230 irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
3231 irq_ptr->state == QDIO_IRQ_STATE_ERR);
3233 if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED)
3236 up(&irq_ptr->setting_up_sema);
3237 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3241 qdio_get_ssqd_information(irq_ptr);
3242 /* if this gets set once, we're running under VM and can omit SVSes */
3243 if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY)
3246 sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac);
3247 QDIO_DBF_TEXT2(0,setup,dbf_text);
3249 sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac);
3250 QDIO_DBF_TEXT2(0,setup,dbf_text);
3252 irq_ptr->hydra_gives_outbound_pcis=
3253 irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED;
3254 irq_ptr->sync_done_on_outb_pcis=
3255 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS;
3257 qdio_initialize_set_siga_flags_input(irq_ptr);
3258 qdio_initialize_set_siga_flags_output(irq_ptr);
3260 up(&irq_ptr->setting_up_sema);
3267 qdio_activate(struct ccw_device *cdev, int flags)
3269 struct qdio_irq *irq_ptr;
3270 int i,result=0,result2;
3271 unsigned long saveflags;
3272 char dbf_text[20]; /* see qdio_initialize */
3274 irq_ptr = cdev->private->qdio_data;
3278 if (cdev->private->state != DEV_STATE_ONLINE)
3281 down(&irq_ptr->setting_up_sema);
3282 if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) {
3287 sprintf(dbf_text,"qact%4x", irq_ptr->schid.sch_no);
3288 QDIO_DBF_TEXT2(0,setup,dbf_text);
3289 QDIO_DBF_TEXT2(0,trace,dbf_text);
3292 irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd;
3293 irq_ptr->ccw.flags=CCW_FLAG_SLI;
3294 irq_ptr->ccw.count=irq_ptr->aqueue.count;
3295 irq_ptr->ccw.cda=QDIO_GET_ADDR(0);
3297 spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3299 ccw_device_set_timeout(cdev, 0);
3300 ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
3301 result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE,
3302 0, DOIO_DENY_PREFETCH);
3304 result2=ccw_device_start(cdev,&irq_ptr->ccw,
3305 QDIO_DOING_ACTIVATE,0,0);
3306 sprintf(dbf_text,"aq:io%4x",result);
3307 QDIO_DBF_TEXT2(1,setup,dbf_text);
3309 sprintf(dbf_text,"aq:io%4x",result);
3310 QDIO_DBF_TEXT2(1,setup,dbf_text);
3312 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3313 "returned %i, next try returned %i\n",
3314 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3319 spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3323 for (i=0;i<irq_ptr->no_input_qs;i++) {
3324 if (irq_ptr->is_thinint_irq) {
3326 * that way we know, that, if we will get interrupted
3327 * by tiqdio_inbound_processing, qdio_unmark_q will
3330 qdio_reserve_q(irq_ptr->input_qs[i]);
3331 qdio_mark_tiq(irq_ptr->input_qs[i]);
3332 qdio_release_q(irq_ptr->input_qs[i]);
3336 if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) {
3337 for (i=0;i<irq_ptr->no_input_qs;i++) {
3338 irq_ptr->input_qs[i]->is_input_q|=
3339 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT;
3343 wait_event_interruptible_timeout(cdev->private->wait_q,
3345 QDIO_IRQ_STATE_STOPPED) ||
3347 QDIO_IRQ_STATE_ERR)),
3348 QDIO_ACTIVATE_TIMEOUT);
3350 switch (irq_ptr->state) {
3351 case QDIO_IRQ_STATE_STOPPED:
3352 case QDIO_IRQ_STATE_ERR:
3353 up(&irq_ptr->setting_up_sema);
3354 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3355 down(&irq_ptr->setting_up_sema);
3359 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
3363 up(&irq_ptr->setting_up_sema);
3368 /* buffers filled forwards again to make Rick happy */
3370 qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx,
3371 unsigned int count, struct qdio_buffer *buffers)
3373 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3374 qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3375 if (irq->is_qebsm) {
3377 set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
3381 set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
3384 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
3389 qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx,
3390 unsigned int count, struct qdio_buffer *buffers)
3392 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3394 qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3395 if (irq->is_qebsm) {
3397 set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3402 set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3405 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
3410 do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags,
3411 unsigned int qidx, unsigned int count,
3412 struct qdio_buffer *buffers)
3416 /* This is the inbound handling of queues */
3417 used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3419 qdio_do_qdio_fill_input(q,qidx,count,buffers);
3421 if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&&
3422 (callflags&QDIO_FLAG_UNDER_INTERRUPT))
3423 atomic_swap(&q->polling,0);
3427 if (callflags&QDIO_FLAG_DONT_SIGA)
3432 result=qdio_siga_input(q);
3435 q->error_status_flags|=
3436 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
3437 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
3438 q->siga_error=result;
3446 do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
3447 unsigned int qidx, unsigned int count,
3448 struct qdio_buffer *buffers)
3451 unsigned int cnt, start_buf;
3452 unsigned char state = 0;
3453 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3455 /* This is the outbound handling of queues */
3456 #ifdef QDIO_PERFORMANCE_STATS
3457 perf_stats.start_time_outbound=NOW;
3458 #endif /* QDIO_PERFORMANCE_STATS */
3460 qdio_do_qdio_fill_output(q,qidx,count,buffers);
3462 used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3464 if (callflags&QDIO_FLAG_DONT_SIGA) {
3465 #ifdef QDIO_PERFORMANCE_STATS
3466 perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3467 perf_stats.outbound_cnt++;
3468 #endif /* QDIO_PERFORMANCE_STATS */
3471 if (q->is_iqdio_q) {
3472 /* one siga for every sbal */
3474 qdio_kick_outbound_q(q);
3476 __qdio_outbound_processing(q);
3478 /* under VM, we do a SIGA sync unconditionally */
3482 * w/o shadow queues (else branch of
3483 * SYNC_MEMORY :-/ ), we try to
3484 * fast-requeue buffers
3486 if (irq->is_qebsm) {
3488 start_buf = ((qidx+QDIO_MAX_BUFFERS_PER_Q-1) &
3489 (QDIO_MAX_BUFFERS_PER_Q-1));
3490 qdio_do_eqbs(q, &state, &start_buf, &cnt);
3492 state = q->slsb.acc.val[(qidx+QDIO_MAX_BUFFERS_PER_Q-1)
3493 &(QDIO_MAX_BUFFERS_PER_Q-1) ];
3494 if (state != SLSB_CU_OUTPUT_PRIMED) {
3495 qdio_kick_outbound_q(q);
3497 QDIO_DBF_TEXT3(0,trace, "fast-req");
3498 #ifdef QDIO_PERFORMANCE_STATS
3499 perf_stats.fast_reqs++;
3500 #endif /* QDIO_PERFORMANCE_STATS */
3504 * only marking the q could take too long,
3505 * the upper layer module could do a lot of
3506 * traffic in that time
3508 __qdio_outbound_processing(q);
3511 #ifdef QDIO_PERFORMANCE_STATS
3512 perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3513 perf_stats.outbound_cnt++;
3514 #endif /* QDIO_PERFORMANCE_STATS */
3517 /* count must be 1 in iqdio */
3519 do_QDIO(struct ccw_device *cdev,unsigned int callflags,
3520 unsigned int queue_number, unsigned int qidx,
3521 unsigned int count,struct qdio_buffer *buffers)
3523 struct qdio_irq *irq_ptr;
3524 #ifdef CONFIG_QDIO_DEBUG
3527 sprintf(dbf_text,"doQD%04x",cdev->private->sch_no);
3528 QDIO_DBF_TEXT3(0,trace,dbf_text);
3529 #endif /* CONFIG_QDIO_DEBUG */
3531 if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) ||
3532 (count>QDIO_MAX_BUFFERS_PER_Q) ||
3533 (queue_number>QDIO_MAX_QUEUES_PER_IRQ) )
3539 irq_ptr = cdev->private->qdio_data;
3543 #ifdef CONFIG_QDIO_DEBUG
3544 if (callflags&QDIO_FLAG_SYNC_INPUT)
3545 QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number],
3548 QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number],
3550 sprintf(dbf_text,"flag%04x",callflags);
3551 QDIO_DBF_TEXT3(0,trace,dbf_text);
3552 sprintf(dbf_text,"qi%02xct%02x",qidx,count);
3553 QDIO_DBF_TEXT3(0,trace,dbf_text);
3554 #endif /* CONFIG_QDIO_DEBUG */
3556 if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE)
3559 if (callflags&QDIO_FLAG_SYNC_INPUT)
3560 do_qdio_handle_inbound(irq_ptr->input_qs[queue_number],
3561 callflags, qidx, count, buffers);
3562 else if (callflags&QDIO_FLAG_SYNC_OUTPUT)
3563 do_qdio_handle_outbound(irq_ptr->output_qs[queue_number],
3564 callflags, qidx, count, buffers);
3566 QDIO_DBF_TEXT3(1,trace,"doQD:inv");
3572 #ifdef QDIO_PERFORMANCE_STATS
3574 qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
3575 int buffer_length, int *eof, void *data)
3579 /* we are always called with buffer_length=4k, so we all
3580 deliver on the first read */
3584 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3585 _OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc,i_p_c);
3586 _OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc,ii_p_c);
3587 _OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc,o_p_c);
3588 _OUTP_IT("Number of tasklet runs (total) : %u\n",
3589 perf_stats.tl_runs);
3591 _OUTP_IT("Number of SIGA sync's issued : %u\n",
3592 perf_stats.siga_syncs);
3593 _OUTP_IT("Number of SIGA in's issued : %u\n",
3594 perf_stats.siga_ins);
3595 _OUTP_IT("Number of SIGA out's issued : %u\n",
3596 perf_stats.siga_outs);
3597 _OUTP_IT("Number of PCIs caught : %u\n",
3599 _OUTP_IT("Number of adapter interrupts caught : %u\n",
3600 perf_stats.thinints);
3601 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %u\n",
3602 perf_stats.fast_reqs);
3604 _OUTP_IT("Total time of all inbound actions (us) incl. UL : %u\n",
3605 perf_stats.inbound_time);
3606 _OUTP_IT("Number of inbound transfers : %u\n",
3607 perf_stats.inbound_cnt);
3608 _OUTP_IT("Total time of all outbound do_QDIOs (us) : %u\n",
3609 perf_stats.outbound_time);
3610 _OUTP_IT("Number of do_QDIOs outbound : %u\n",
3611 perf_stats.outbound_cnt);
3617 static struct proc_dir_entry *qdio_perf_proc_file;
3618 #endif /* QDIO_PERFORMANCE_STATS */
3621 qdio_add_procfs_entry(void)
3623 #ifdef QDIO_PERFORMANCE_STATS
3624 proc_perf_file_registration=0;
3625 qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
3626 S_IFREG|0444,&proc_root);
3627 if (qdio_perf_proc_file) {
3628 qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read;
3629 } else proc_perf_file_registration=-1;
3631 if (proc_perf_file_registration)
3632 QDIO_PRINT_WARN("was not able to register perf. " \
3633 "proc-file (%i).\n",
3634 proc_perf_file_registration);
3635 #endif /* QDIO_PERFORMANCE_STATS */
3639 qdio_remove_procfs_entry(void)
3641 #ifdef QDIO_PERFORMANCE_STATS
3642 perf_stats.tl_runs=0;
3644 if (!proc_perf_file_registration) /* means if it went ok earlier */
3645 remove_proc_entry(QDIO_PERF,&proc_root);
3646 #endif /* QDIO_PERFORMANCE_STATS */
3650 tiqdio_register_thinints(void)
3653 register_thinint_result=
3654 s390_register_adapter_interrupt(&tiqdio_thinint_handler);
3655 if (register_thinint_result) {
3656 sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff));
3657 QDIO_DBF_TEXT0(0,setup,dbf_text);
3658 QDIO_PRINT_ERR("failed to register adapter handler " \
3659 "(rc=%i).\nAdapter interrupts might " \
3660 "not work. Continuing.\n",
3661 register_thinint_result);
3666 tiqdio_unregister_thinints(void)
3668 if (!register_thinint_result)
3669 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler);
3673 qdio_get_qdio_memory(void)
3676 indicator_used[0]=1;
3678 for (i=1;i<INDICATORS_PER_CACHELINE;i++)
3679 indicator_used[i]=0;
3680 indicators=(__u32*)kmalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
3682 if (!indicators) return -ENOMEM;
3683 memset(indicators,0,sizeof(__u32)*(INDICATORS_PER_CACHELINE));
3688 qdio_release_qdio_memory(void)
3694 qdio_unregister_dbf_views(void)
3697 debug_unregister(qdio_dbf_setup);
3699 debug_unregister(qdio_dbf_sbal);
3701 debug_unregister(qdio_dbf_sense);
3703 debug_unregister(qdio_dbf_trace);
3704 #ifdef CONFIG_QDIO_DEBUG
3705 if (qdio_dbf_slsb_out)
3706 debug_unregister(qdio_dbf_slsb_out);
3707 if (qdio_dbf_slsb_in)
3708 debug_unregister(qdio_dbf_slsb_in);
3709 #endif /* CONFIG_QDIO_DEBUG */
3713 qdio_register_dbf_views(void)
3715 qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
3716 QDIO_DBF_SETUP_PAGES,
3717 QDIO_DBF_SETUP_NR_AREAS,
3718 QDIO_DBF_SETUP_LEN);
3719 if (!qdio_dbf_setup)
3721 debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view);
3722 debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
3724 qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
3725 QDIO_DBF_SBAL_PAGES,
3726 QDIO_DBF_SBAL_NR_AREAS,
3731 debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view);
3732 debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
3734 qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
3735 QDIO_DBF_SENSE_PAGES,
3736 QDIO_DBF_SENSE_NR_AREAS,
3737 QDIO_DBF_SENSE_LEN);
3738 if (!qdio_dbf_sense)
3741 debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view);
3742 debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
3744 qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
3745 QDIO_DBF_TRACE_PAGES,
3746 QDIO_DBF_TRACE_NR_AREAS,
3747 QDIO_DBF_TRACE_LEN);
3748 if (!qdio_dbf_trace)
3751 debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view);
3752 debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL);
3754 #ifdef CONFIG_QDIO_DEBUG
3755 qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
3756 QDIO_DBF_SLSB_OUT_PAGES,
3757 QDIO_DBF_SLSB_OUT_NR_AREAS,
3758 QDIO_DBF_SLSB_OUT_LEN);
3759 if (!qdio_dbf_slsb_out)
3761 debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view);
3762 debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
3764 qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
3765 QDIO_DBF_SLSB_IN_PAGES,
3766 QDIO_DBF_SLSB_IN_NR_AREAS,
3767 QDIO_DBF_SLSB_IN_LEN);
3768 if (!qdio_dbf_slsb_in)
3770 debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view);
3771 debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL);
3772 #endif /* CONFIG_QDIO_DEBUG */
3775 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3776 qdio_unregister_dbf_views();
3784 #ifdef QDIO_PERFORMANCE_STATS
3786 #endif /* QDIO_PERFORMANCE_STATS */
3788 printk("qdio: loading %s\n",version);
3790 res=qdio_get_qdio_memory();
3794 res = qdio_register_dbf_views();
3798 QDIO_DBF_TEXT0(0,setup,"initQDIO");
3800 #ifdef QDIO_PERFORMANCE_STATS
3801 memset((void*)&perf_stats,0,sizeof(perf_stats));
3802 QDIO_DBF_TEXT0(0,setup,"perfstat");
3804 QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
3805 #endif /* QDIO_PERFORMANCE_STATS */
3807 qdio_add_procfs_entry();
3809 if (tiqdio_check_chsc_availability())
3810 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3812 tiqdio_register_thinints();
3820 tiqdio_unregister_thinints();
3821 qdio_remove_procfs_entry();
3822 qdio_release_qdio_memory();
3823 qdio_unregister_dbf_views();
3825 printk("qdio: %s: module removed\n",version);
3828 module_init(init_QDIO);
3829 module_exit(cleanup_QDIO);
3831 EXPORT_SYMBOL(qdio_allocate);
3832 EXPORT_SYMBOL(qdio_establish);
3833 EXPORT_SYMBOL(qdio_initialize);
3834 EXPORT_SYMBOL(qdio_activate);
3835 EXPORT_SYMBOL(do_QDIO);
3836 EXPORT_SYMBOL(qdio_shutdown);
3837 EXPORT_SYMBOL(qdio_free);
3838 EXPORT_SYMBOL(qdio_cleanup);
3839 EXPORT_SYMBOL(qdio_synchronize);