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>
35 #include <linux/delay.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>
41 #include <linux/semaphore.h>
43 #include <asm/ccwdev.h>
45 #include <asm/atomic.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 void *tiqdio_ind
;
100 static void tiqdio_tl(unsigned long);
101 static DECLARE_TASKLET(tiqdio_tasklet
,tiqdio_tl
,0);
103 /* not a macro, as one of the arguments is atomic_read */
105 qdio_min(int a
,int b
)
113 /***************** SCRUBBER HELPER ROUTINES **********************/
115 static inline void qdio_perf_stat_inc(atomic64_t
*count
)
117 if (qdio_performance_stats
)
121 static inline void qdio_perf_stat_dec(atomic64_t
*count
)
123 if (qdio_performance_stats
)
126 #else /* CONFIG_64BIT */
127 static inline void qdio_perf_stat_inc(atomic_t
*count
)
129 if (qdio_performance_stats
)
133 static inline void qdio_perf_stat_dec(atomic_t
*count
)
135 if (qdio_performance_stats
)
138 #endif /* CONFIG_64BIT */
141 qdio_get_micros(void)
143 return (get_clock() >> 12); /* time>>12 is microseconds */
147 * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
148 * the q in any case, so that we'll not be interrupted when we are in
149 * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
150 * ever works (last famous words)
153 qdio_reserve_q(struct qdio_q
*q
)
155 return atomic_add_return(1,&q
->use_count
) - 1;
159 qdio_release_q(struct qdio_q
*q
)
161 atomic_dec(&q
->use_count
);
166 qdio_check_ccq(struct qdio_q
*q
, unsigned int ccq
)
170 if (ccq
== 0 || ccq
== 32)
172 if (ccq
== 96 || ccq
== 97)
174 /*notify devices immediately*/
175 sprintf(dbf_text
,"%d", ccq
);
176 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
179 /* EQBS: extract buffer states */
181 qdio_do_eqbs(struct qdio_q
*q
, unsigned char *state
,
182 unsigned int *start
, unsigned int *cnt
)
184 struct qdio_irq
*irq
;
185 unsigned int tmp_cnt
, q_no
, ccq
;
191 irq
= (struct qdio_irq
*)q
->irq_ptr
;
194 q_no
+= irq
->no_input_qs
;
196 ccq
= do_eqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
197 rc
= qdio_check_ccq(q
, ccq
);
198 if ((ccq
== 96) && (tmp_cnt
!= *cnt
))
201 QDIO_DBF_TEXT5(1,trace
,"eqAGAIN");
205 QDIO_DBF_TEXT2(1,trace
,"eqberr");
206 sprintf(dbf_text
,"%2x,%2x,%d,%d",tmp_cnt
, *cnt
, ccq
, q_no
);
207 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
208 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
209 QDIO_STATUS_LOOK_FOR_ERROR
,
210 0, 0, 0, -1, -1, q
->int_parm
);
213 return (tmp_cnt
- *cnt
);
216 /* SQBS: set buffer states */
218 qdio_do_sqbs(struct qdio_q
*q
, unsigned char state
,
219 unsigned int *start
, unsigned int *cnt
)
221 struct qdio_irq
*irq
;
222 unsigned int tmp_cnt
, q_no
, ccq
;
228 irq
= (struct qdio_irq
*)q
->irq_ptr
;
231 q_no
+= irq
->no_input_qs
;
233 ccq
= do_sqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
234 rc
= qdio_check_ccq(q
, ccq
);
236 QDIO_DBF_TEXT5(1,trace
,"sqAGAIN");
240 QDIO_DBF_TEXT3(1,trace
,"sqberr");
241 sprintf(dbf_text
,"%2x,%2x",tmp_cnt
,*cnt
);
242 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
243 sprintf(dbf_text
,"%d,%d",ccq
,q_no
);
244 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
245 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
246 QDIO_STATUS_LOOK_FOR_ERROR
,
247 0, 0, 0, -1, -1, q
->int_parm
);
250 return (tmp_cnt
- *cnt
);
254 qdio_set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
255 unsigned char state
, unsigned int *count
)
258 struct qdio_irq
*irq
;
260 irq
= (struct qdio_irq
*)q
->irq_ptr
;
261 if (!irq
->is_qebsm
) {
262 slsb
= (char *)&q
->slsb
.acc
.val
[(*bufno
)];
266 return qdio_do_sqbs(q
, state
, bufno
, count
);
269 #ifdef CONFIG_QDIO_DEBUG
271 qdio_trace_slsb(struct qdio_q
*q
)
273 if (q
->queue_type
==QDIO_TRACE_QTYPE
) {
275 QDIO_DBF_HEX2(0,slsb_in
,&q
->slsb
,
276 QDIO_MAX_BUFFERS_PER_Q
);
278 QDIO_DBF_HEX2(0,slsb_out
,&q
->slsb
,
279 QDIO_MAX_BUFFERS_PER_Q
);
285 set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
286 unsigned char state
, unsigned int *count
)
289 #ifdef CONFIG_QDIO_DEBUG
292 rc
= qdio_set_slsb(q
, bufno
, state
, count
);
293 #ifdef CONFIG_QDIO_DEBUG
299 qdio_siga_sync(struct qdio_q
*q
, unsigned int gpr2
,
304 QDIO_DBF_TEXT4(0,trace
,"sigasync");
305 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
307 qdio_perf_stat_inc(&perf_stats
.siga_syncs
);
309 cc
= do_siga_sync(q
->schid
, gpr2
, gpr3
);
311 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
317 qdio_siga_sync_q(struct qdio_q
*q
)
320 return qdio_siga_sync(q
, 0, q
->mask
);
321 return qdio_siga_sync(q
, q
->mask
, 0);
325 __do_siga_output(struct qdio_q
*q
, unsigned int *busy_bit
)
327 struct qdio_irq
*irq
;
331 irq
= (struct qdio_irq
*) q
->irq_ptr
;
333 schid
= *((u32
*)&q
->schid
);
335 schid
= irq
->sch_token
;
338 return do_siga_output(schid
, q
->mask
, busy_bit
, fc
);
342 * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
343 * an access exception
346 qdio_siga_output(struct qdio_q
*q
)
352 qdio_perf_stat_inc(&perf_stats
.siga_outs
);
354 QDIO_DBF_TEXT4(0,trace
,"sigaout");
355 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
358 cc
= __do_siga_output(q
, &busy_bit
);
359 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
360 if ((cc
==2) && (busy_bit
) && (q
->is_iqdio_q
)) {
363 if ((NOW
-start_time
)>QDIO_BUSY_BIT_PATIENCE
)
369 if ((cc
==2) && (busy_bit
))
370 cc
|= QDIO_SIGA_ERROR_B_BIT_SET
;
373 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
379 qdio_siga_input(struct qdio_q
*q
)
383 QDIO_DBF_TEXT4(0,trace
,"sigain");
384 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
386 qdio_perf_stat_inc(&perf_stats
.siga_ins
);
388 cc
= do_siga_input(q
->schid
, q
->mask
);
391 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
396 /* locked by the locks in qdio_activate and qdio_cleanup */
398 qdio_get_indicator(void)
402 for (i
= 0; i
< INDICATORS_PER_CACHELINE
; i
++)
403 if (!indicator_used
[i
]) {
407 atomic_inc(&spare_indicator_usecount
);
408 return (__u32
* volatile) &spare_indicator
;
411 /* locked by the locks in qdio_activate and qdio_cleanup */
413 qdio_put_indicator(__u32
*addr
)
417 if ( (addr
) && (addr
!=&spare_indicator
) ) {
421 if (addr
== &spare_indicator
)
422 atomic_dec(&spare_indicator_usecount
);
426 tiqdio_clear_summary_bit(__u32
*location
)
428 QDIO_DBF_TEXT5(0,trace
,"clrsummb");
429 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
435 tiqdio_set_summary_bit(__u32
*location
)
437 QDIO_DBF_TEXT5(0,trace
,"setsummb");
438 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
444 tiqdio_sched_tl(void)
446 tasklet_hi_schedule(&tiqdio_tasklet
);
450 qdio_mark_tiq(struct qdio_q
*q
)
454 QDIO_DBF_TEXT4(0,trace
,"mark iq");
455 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
457 spin_lock_irqsave(&ttiq_list_lock
,flags
);
458 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
464 if ((q
->list_prev
) || (q
->list_next
))
472 q
->list_next
=tiq_list
;
473 q
->list_prev
=tiq_list
->list_prev
;
474 tiq_list
->list_prev
->list_next
=q
;
475 tiq_list
->list_prev
=q
;
477 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
479 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
483 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
488 qdio_mark_q(struct qdio_q
*q
)
490 QDIO_DBF_TEXT4(0,trace
,"mark q");
491 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
493 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
496 tasklet_schedule(&q
->tasklet
);
500 qdio_stop_polling(struct qdio_q
*q
)
502 #ifdef QDIO_USE_PROCESSING_STATE
503 unsigned int tmp
, gsf
, count
= 1;
504 unsigned char state
= 0;
505 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
507 if (!atomic_xchg(&q
->polling
,0))
510 QDIO_DBF_TEXT4(0,trace
,"stoppoll");
511 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
513 /* show the card that we are not polling anymore */
517 tmp
= gsf
= GET_SAVED_FRONTIER(q
);
518 tmp
= ((tmp
+ QDIO_MAX_BUFFERS_PER_Q
-1) & (QDIO_MAX_BUFFERS_PER_Q
-1) );
519 set_slsb(q
, &tmp
, SLSB_P_INPUT_NOT_INIT
, &count
);
522 * we don't issue this SYNC_MEMORY, as we trust Rick T and
523 * moreover will not use the PROCESSING state under VM, so
524 * q->polling was 0 anyway
529 qdio_do_eqbs(q
, &state
, &gsf
, &count
);
531 state
= q
->slsb
.acc
.val
[gsf
];
532 if (state
!= SLSB_P_INPUT_PRIMED
)
535 * set our summary bit again, as otherwise there is a
536 * small window we can miss between resetting it and
537 * checking for PRIMED state
540 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
543 #else /* QDIO_USE_PROCESSING_STATE */
545 #endif /* QDIO_USE_PROCESSING_STATE */
549 * see the comment in do_QDIO and before qdio_reserve_q about the
550 * sophisticated locking outside of unmark_q, so that we don't need to
551 * disable the interrupts :-)
554 qdio_unmark_q(struct qdio_q
*q
)
558 QDIO_DBF_TEXT4(0,trace
,"unmark q");
559 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
561 if ((!q
->list_prev
)||(!q
->list_next
))
564 if ((q
->is_thinint_q
)&&(q
->is_input_q
)) {
566 spin_lock_irqsave(&ttiq_list_lock
,flags
);
567 /* in case cleanup has done this already and simultanously
568 * qdio_unmark_q is called from the interrupt handler, we've
569 * got to check this in this specific case again */
570 if ((!q
->list_prev
)||(!q
->list_next
))
572 if (q
->list_next
==q
) {
573 /* q was the only interesting q */
578 q
->list_next
->list_prev
=q
->list_prev
;
579 q
->list_prev
->list_next
=q
->list_next
;
580 tiq_list
=q
->list_next
;
585 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
589 static inline unsigned long
590 tiqdio_clear_global_summary(void)
594 QDIO_DBF_TEXT5(0,trace
,"clrglobl");
596 time
= do_clear_global_summary();
598 QDIO_DBF_HEX5(0,trace
,&time
,sizeof(unsigned long));
604 /************************* OUTBOUND ROUTINES *******************************/
606 qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q
*q
)
608 struct qdio_irq
*irq
;
610 unsigned int cnt
, count
, ftc
;
612 irq
= (struct qdio_irq
*) q
->irq_ptr
;
613 if ((!q
->is_iqdio_q
) && (!q
->hydra_gives_outbound_pcis
))
616 ftc
= q
->first_to_check
;
617 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
618 (QDIO_MAX_BUFFERS_PER_Q
-1));
620 return q
->first_to_check
;
621 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
623 return q
->first_to_check
;
625 case SLSB_P_OUTPUT_ERROR
:
626 QDIO_DBF_TEXT3(0,trace
,"outperr");
627 atomic_sub(cnt
, &q
->number_of_buffers_used
);
629 q
->error_status_flags
|=
630 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
631 q
->qdio_error
= SLSB_P_OUTPUT_ERROR
;
632 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
633 q
->first_to_check
= ftc
;
635 case SLSB_P_OUTPUT_EMPTY
:
636 QDIO_DBF_TEXT5(0,trace
,"outpempt");
637 atomic_sub(cnt
, &q
->number_of_buffers_used
);
638 q
->first_to_check
= ftc
;
640 case SLSB_CU_OUTPUT_PRIMED
:
641 /* all buffers primed */
642 QDIO_DBF_TEXT5(0,trace
,"outpprim");
647 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
648 return q
->first_to_check
;
652 qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q
*q
)
654 struct qdio_irq
*irq
;
656 int tmp
, ftc
, count
, cnt
;
660 irq
= (struct qdio_irq
*) q
->irq_ptr
;
661 ftc
= q
->first_to_check
;
662 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
663 (QDIO_MAX_BUFFERS_PER_Q
-1));
665 return q
->first_to_check
;
666 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
668 return q
->first_to_check
;
670 case SLSB_P_INPUT_ERROR
:
671 #ifdef CONFIG_QDIO_DEBUG
672 QDIO_DBF_TEXT3(1,trace
,"inperr");
673 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
674 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
675 #endif /* CONFIG_QDIO_DEBUG */
677 q
->error_status_flags
|=
678 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
679 q
->qdio_error
= SLSB_P_INPUT_ERROR
;
680 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
681 atomic_sub(cnt
, &q
->number_of_buffers_used
);
682 q
->first_to_check
= ftc
;
684 case SLSB_P_INPUT_PRIMED
:
685 QDIO_DBF_TEXT3(0,trace
,"inptprim");
686 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
687 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
689 ftc
= q
->first_to_check
;
690 #ifdef QDIO_USE_PROCESSING_STATE
693 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
698 tmp
+= set_slsb(q
, &ftc
,
699 SLSB_P_INPUT_PROCESSING
, &cnt
);
700 atomic_set(&q
->polling
, 1);
702 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
704 atomic_sub(tmp
, &q
->number_of_buffers_used
);
705 q
->first_to_check
= ftc
;
707 case SLSB_CU_INPUT_EMPTY
:
708 case SLSB_P_INPUT_NOT_INIT
:
709 case SLSB_P_INPUT_PROCESSING
:
710 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
715 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
716 return q
->first_to_check
;
720 qdio_get_outbound_buffer_frontier(struct qdio_q
*q
)
722 struct qdio_irq
*irq
;
724 unsigned int count
= 1;
725 int first_not_to_check
, f
, f_mod_no
;
728 QDIO_DBF_TEXT4(0,trace
,"getobfro");
729 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
731 irq
= (struct qdio_irq
*) q
->irq_ptr
;
733 return qdio_qebsm_get_outbound_buffer_frontier(q
);
735 slsb
=&q
->slsb
.acc
.val
[0];
736 f_mod_no
=f
=q
->first_to_check
;
738 * f points to already processed elements, so f+no_used is correct...
739 * ... but: we don't check 128 buffers, as otherwise
740 * qdio_has_outbound_q_moved would return 0
742 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
743 (QDIO_MAX_BUFFERS_PER_Q
-1));
745 if (((!q
->is_iqdio_q
) && (!q
->hydra_gives_outbound_pcis
)) ||
746 (q
->queue_type
== QDIO_IQDIO_QFMT_ASYNCH
))
750 if (f
==first_not_to_check
)
753 switch(slsb
[f_mod_no
]) {
755 /* the adapter has not fetched the output yet */
756 case SLSB_CU_OUTPUT_PRIMED
:
757 QDIO_DBF_TEXT5(0,trace
,"outpprim");
760 /* the adapter got it */
761 case SLSB_P_OUTPUT_EMPTY
:
762 atomic_dec(&q
->number_of_buffers_used
);
764 f_mod_no
=f
&(QDIO_MAX_BUFFERS_PER_Q
-1);
765 QDIO_DBF_TEXT5(0,trace
,"outpempt");
768 case SLSB_P_OUTPUT_ERROR
:
769 QDIO_DBF_TEXT3(0,trace
,"outperr");
770 sprintf(dbf_text
,"%x-%x-%x",f_mod_no
,
771 q
->sbal
[f_mod_no
]->element
[14].sbalf
.value
,
772 q
->sbal
[f_mod_no
]->element
[15].sbalf
.value
);
773 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
774 QDIO_DBF_HEX2(1,sbal
,q
->sbal
[f_mod_no
],256);
776 /* kind of process the buffer */
777 set_slsb(q
, &f_mod_no
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
780 * we increment the frontier, as this buffer
781 * was processed obviously
783 atomic_dec(&q
->number_of_buffers_used
);
784 f_mod_no
=(f_mod_no
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
787 q
->error_status_flags
|=
788 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
789 q
->qdio_error
=SLSB_P_OUTPUT_ERROR
;
790 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
796 QDIO_DBF_TEXT5(0,trace
,"outpni");
799 return (q
->first_to_check
=f_mod_no
);
802 /* all buffers are processed */
804 qdio_is_outbound_q_done(struct qdio_q
*q
)
807 #ifdef CONFIG_QDIO_DEBUG
811 no_used
=atomic_read(&q
->number_of_buffers_used
);
813 #ifdef CONFIG_QDIO_DEBUG
815 sprintf(dbf_text
,"oqisnt%02x",no_used
);
816 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
818 QDIO_DBF_TEXT4(0,trace
,"oqisdone");
820 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
821 #endif /* CONFIG_QDIO_DEBUG */
826 qdio_has_outbound_q_moved(struct qdio_q
*q
)
830 i
=qdio_get_outbound_buffer_frontier(q
);
832 if ( (i
!=GET_SAVED_FRONTIER(q
)) ||
833 (q
->error_status_flags
&QDIO_STATUS_LOOK_FOR_ERROR
) ) {
835 QDIO_DBF_TEXT4(0,trace
,"oqhasmvd");
836 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
839 QDIO_DBF_TEXT4(0,trace
,"oqhsntmv");
840 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
846 qdio_kick_outbound_q(struct qdio_q
*q
)
849 #ifdef CONFIG_QDIO_DEBUG
852 QDIO_DBF_TEXT4(0,trace
,"kickoutq");
853 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
854 #endif /* CONFIG_QDIO_DEBUG */
859 /* here's the story with cc=2 and busy bit set (thanks, Rick):
860 * VM's CP could present us cc=2 and busy bit set on SIGA-write
861 * during reconfiguration of their Guest LAN (only in HIPERS mode,
862 * QDIO mode is asynchronous -- cc=2 and busy bit there will take
863 * the queues down immediately; and not being under VM we have a
864 * problem on cc=2 and busy bit set right away).
866 * Therefore qdio_siga_output will try for a short time constantly,
867 * if such a condition occurs. If it doesn't change, it will
868 * increase the busy_siga_counter and save the timestamp, and
869 * schedule the queue for later processing (via mark_q, using the
870 * queue tasklet). __qdio_outbound_processing will check out the
871 * counter. If non-zero, it will call qdio_kick_outbound_q as often
872 * as the value of the counter. This will attempt further SIGA
873 * instructions. For each successful SIGA, the counter is
874 * decreased, for failing SIGAs the counter remains the same, after
876 * After some time of no movement, qdio_kick_outbound_q will
877 * finally fail and reflect corresponding error codes to call
878 * the upper layer module and have it take the queues down.
880 * Note that this is a change from the original HiperSockets design
881 * (saying cc=2 and busy bit means take the queues down), but in
882 * these days Guest LAN didn't exist... excessive cc=2 with busy bit
883 * conditions will still take the queues down, but the threshold is
884 * higher due to the Guest LAN environment.
888 result
=qdio_siga_output(q
);
892 /* went smooth this time, reset timestamp */
893 #ifdef CONFIG_QDIO_DEBUG
894 QDIO_DBF_TEXT3(0,trace
,"cc2reslv");
895 sprintf(dbf_text
,"%4x%2x%2x",q
->schid
.sch_no
,q
->q_no
,
896 atomic_read(&q
->busy_siga_counter
));
897 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
898 #endif /* CONFIG_QDIO_DEBUG */
899 q
->timing
.busy_start
=0;
901 case (2|QDIO_SIGA_ERROR_B_BIT_SET
):
902 /* cc=2 and busy bit: */
903 atomic_inc(&q
->busy_siga_counter
);
905 /* if the last siga was successful, save
907 if (!q
->timing
.busy_start
)
908 q
->timing
.busy_start
=NOW
;
910 /* if we're in time, don't touch error_status_flags
912 if (NOW
-q
->timing
.busy_start
<QDIO_BUSY_BIT_GIVE_UP
) {
916 QDIO_DBF_TEXT2(0,trace
,"cc2REPRT");
917 #ifdef CONFIG_QDIO_DEBUG
918 sprintf(dbf_text
,"%4x%2x%2x",q
->schid
.sch_no
,q
->q_no
,
919 atomic_read(&q
->busy_siga_counter
));
920 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
921 #endif /* CONFIG_QDIO_DEBUG */
922 /* else fallthrough and report error */
924 /* for plain cc=1, 2 or 3: */
926 q
->error_status_flags
|=
927 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
928 q
->error_status_flags
|=
929 QDIO_STATUS_LOOK_FOR_ERROR
;
930 q
->siga_error
=result
;
935 qdio_kick_outbound_handler(struct qdio_q
*q
)
937 int start
, end
, real_end
, count
;
938 #ifdef CONFIG_QDIO_DEBUG
942 start
= q
->first_element_to_kick
;
943 /* last_move_ftc was just updated */
944 real_end
= GET_SAVED_FRONTIER(q
);
945 end
= (real_end
+QDIO_MAX_BUFFERS_PER_Q
-1)&
946 (QDIO_MAX_BUFFERS_PER_Q
-1);
947 count
= (end
+QDIO_MAX_BUFFERS_PER_Q
+1-start
)&
948 (QDIO_MAX_BUFFERS_PER_Q
-1);
950 #ifdef CONFIG_QDIO_DEBUG
951 QDIO_DBF_TEXT4(0,trace
,"kickouth");
952 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
954 sprintf(dbf_text
,"s=%2xc=%2x",start
,count
);
955 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
956 #endif /* CONFIG_QDIO_DEBUG */
958 if (q
->state
==QDIO_IRQ_STATE_ACTIVE
)
959 q
->handler(q
->cdev
,QDIO_STATUS_OUTBOUND_INT
|
960 q
->error_status_flags
,
961 q
->qdio_error
,q
->siga_error
,q
->q_no
,start
,count
,
964 /* for the next time: */
965 q
->first_element_to_kick
=real_end
;
968 q
->error_status_flags
=0;
972 __qdio_outbound_processing(struct qdio_q
*q
)
976 QDIO_DBF_TEXT4(0,trace
,"qoutproc");
977 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
979 if (unlikely(qdio_reserve_q(q
))) {
981 qdio_perf_stat_inc(&perf_stats
.outbound_tl_runs_resched
);
982 /* as we're sissies, we'll check next time */
983 if (likely(!atomic_read(&q
->is_in_shutdown
))) {
985 QDIO_DBF_TEXT4(0,trace
,"busy,agn");
989 qdio_perf_stat_inc(&perf_stats
.outbound_tl_runs
);
990 qdio_perf_stat_inc(&perf_stats
.tl_runs
);
992 /* see comment in qdio_kick_outbound_q */
993 siga_attempts
=atomic_read(&q
->busy_siga_counter
);
994 while (siga_attempts
) {
995 atomic_dec(&q
->busy_siga_counter
);
996 qdio_kick_outbound_q(q
);
1000 if (qdio_has_outbound_q_moved(q
))
1001 qdio_kick_outbound_handler(q
);
1003 if (q
->queue_type
== QDIO_ZFCP_QFMT
) {
1004 if ((!q
->hydra_gives_outbound_pcis
) &&
1005 (!qdio_is_outbound_q_done(q
)))
1008 else if (((!q
->is_iqdio_q
) && (!q
->is_pci_out
)) ||
1009 (q
->queue_type
== QDIO_IQDIO_QFMT_ASYNCH
)) {
1011 * make sure buffer switch from PRIMED to EMPTY is noticed
1012 * and outbound_handler is called
1014 if (qdio_is_outbound_q_done(q
)) {
1015 del_timer(&q
->timer
);
1017 if (!timer_pending(&q
->timer
))
1018 mod_timer(&q
->timer
, jiffies
+
1019 QDIO_FORCE_CHECK_TIMEOUT
);
1027 qdio_outbound_processing(unsigned long q
)
1029 __qdio_outbound_processing((struct qdio_q
*) q
);
1032 /************************* INBOUND ROUTINES *******************************/
1036 qdio_get_inbound_buffer_frontier(struct qdio_q
*q
)
1038 struct qdio_irq
*irq
;
1040 volatile char *slsb
;
1041 unsigned int count
= 1;
1042 int first_not_to_check
;
1043 #ifdef CONFIG_QDIO_DEBUG
1045 #endif /* CONFIG_QDIO_DEBUG */
1046 #ifdef QDIO_USE_PROCESSING_STATE
1047 int last_position
=-1;
1048 #endif /* QDIO_USE_PROCESSING_STATE */
1050 QDIO_DBF_TEXT4(0,trace
,"getibfro");
1051 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1053 irq
= (struct qdio_irq
*) q
->irq_ptr
;
1055 return qdio_qebsm_get_inbound_buffer_frontier(q
);
1057 slsb
=&q
->slsb
.acc
.val
[0];
1058 f_mod_no
=f
=q
->first_to_check
;
1060 * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1063 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
1064 (QDIO_MAX_BUFFERS_PER_Q
-1));
1067 * we don't use this one, as a PCI or we after a thin interrupt
1068 * will sync the queues
1073 f_mod_no
=f
&(QDIO_MAX_BUFFERS_PER_Q
-1);
1074 if (f
==first_not_to_check
)
1076 switch (slsb
[f_mod_no
]) {
1078 /* CU_EMPTY means frontier is reached */
1079 case SLSB_CU_INPUT_EMPTY
:
1080 QDIO_DBF_TEXT5(0,trace
,"inptempt");
1083 /* P_PRIMED means set slsb to P_PROCESSING and move on */
1084 case SLSB_P_INPUT_PRIMED
:
1085 QDIO_DBF_TEXT5(0,trace
,"inptprim");
1087 #ifdef QDIO_USE_PROCESSING_STATE
1089 * as soon as running under VM, polling the input queues will
1090 * kill VM in terms of CP overhead
1093 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1095 /* set the previous buffer to NOT_INIT. The current
1096 * buffer will be set to PROCESSING at the end of
1097 * this function to avoid further interrupts. */
1098 if (last_position
>=0)
1099 set_slsb(q
, &last_position
,
1100 SLSB_P_INPUT_NOT_INIT
, &count
);
1101 atomic_set(&q
->polling
,1);
1102 last_position
=f_mod_no
;
1104 #else /* QDIO_USE_PROCESSING_STATE */
1105 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1106 #endif /* QDIO_USE_PROCESSING_STATE */
1108 * not needed, as the inbound queue will be synced on the next
1109 * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1113 atomic_dec(&q
->number_of_buffers_used
);
1116 case SLSB_P_INPUT_NOT_INIT
:
1117 case SLSB_P_INPUT_PROCESSING
:
1118 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
1121 /* P_ERROR means frontier is reached, break and report error */
1122 case SLSB_P_INPUT_ERROR
:
1123 #ifdef CONFIG_QDIO_DEBUG
1124 sprintf(dbf_text
,"inperr%2x",f_mod_no
);
1125 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
1126 #endif /* CONFIG_QDIO_DEBUG */
1127 QDIO_DBF_HEX2(1,sbal
,q
->sbal
[f_mod_no
],256);
1129 /* kind of process the buffer */
1130 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1133 q
->error_status_flags
|=
1134 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
1135 q
->qdio_error
=SLSB_P_INPUT_ERROR
;
1136 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
1138 /* we increment the frontier, as this buffer
1139 * was processed obviously */
1140 f_mod_no
=(f_mod_no
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1141 atomic_dec(&q
->number_of_buffers_used
);
1143 #ifdef QDIO_USE_PROCESSING_STATE
1145 #endif /* QDIO_USE_PROCESSING_STATE */
1149 /* everything else means frontier not changed (HALTED or so) */
1154 q
->first_to_check
=f_mod_no
;
1156 #ifdef QDIO_USE_PROCESSING_STATE
1157 if (last_position
>=0)
1158 set_slsb(q
, &last_position
, SLSB_P_INPUT_PROCESSING
, &count
);
1159 #endif /* QDIO_USE_PROCESSING_STATE */
1161 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
1163 return q
->first_to_check
;
1167 qdio_has_inbound_q_moved(struct qdio_q
*q
)
1171 i
=qdio_get_inbound_buffer_frontier(q
);
1172 if ( (i
!=GET_SAVED_FRONTIER(q
)) ||
1173 (q
->error_status_flags
&QDIO_STATUS_LOOK_FOR_ERROR
) ) {
1175 if ((!q
->siga_sync
)&&(!q
->hydra_gives_outbound_pcis
))
1178 QDIO_DBF_TEXT4(0,trace
,"inhasmvd");
1179 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1182 QDIO_DBF_TEXT4(0,trace
,"inhsntmv");
1183 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1188 /* means, no more buffers to be filled */
1190 tiqdio_is_inbound_q_done(struct qdio_q
*q
)
1193 unsigned int start_buf
, count
;
1194 unsigned char state
= 0;
1195 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1197 #ifdef CONFIG_QDIO_DEBUG
1201 no_used
=atomic_read(&q
->number_of_buffers_used
);
1203 /* propagate the change from 82 to 80 through VM */
1206 #ifdef CONFIG_QDIO_DEBUG
1208 sprintf(dbf_text
,"iqisnt%02x",no_used
);
1209 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1211 QDIO_DBF_TEXT4(0,trace
,"iniqisdo");
1213 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1214 #endif /* CONFIG_QDIO_DEBUG */
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 (q
->dev_st_chg_ind
!= &spare_indicator
)
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 SYNC_MEMORY_ALL_OUTB
;
1415 * maybe we have to do work on our outbound queues... at least
1416 * we have to check the outbound-int-capable thinint-capable
1419 if (q
->hydra_gives_outbound_pcis
) {
1420 irq_ptr
= (struct qdio_irq
*)q
->irq_ptr
;
1421 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1422 oq
= irq_ptr
->output_qs
[i
];
1423 if (!qdio_is_outbound_q_done(oq
)) {
1424 qdio_perf_stat_dec(&perf_stats
.tl_runs
);
1425 __qdio_outbound_processing(oq
);
1430 if (!qdio_has_inbound_q_moved(q
))
1433 qdio_kick_inbound_handler(q
);
1434 if (tiqdio_is_inbound_q_done(q
))
1435 if (!qdio_stop_polling(q
)) {
1437 * we set the flags to get into the stuff next time,
1438 * see also comment in qdio_stop_polling
1440 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1448 tiqdio_inbound_processing(unsigned long q
)
1450 __tiqdio_inbound_processing((struct qdio_q
*) q
,
1451 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(unsigned long q
)
1496 __qdio_inbound_processing((struct qdio_q
*) 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->is_thinint_q isn't valid at this time, but
1761 * irq_ptr->is_thinint_irq is
1763 if (irq_ptr
->is_thinint_irq
)
1764 tasklet_init(&q
->tasklet
, tiqdio_inbound_processing
,
1767 tasklet_init(&q
->tasklet
, qdio_inbound_processing
,
1770 /* actually this is not used for inbound queues. yet. */
1771 atomic_set(&q
->busy_siga_counter
,0);
1772 q
->timing
.busy_start
=0;
1774 /* for (j=0;j<QDIO_STATS_NUMBER;j++)
1775 q->timing.last_transfer_times[j]=(qdio_get_micros()/
1776 QDIO_STATS_NUMBER)*j;
1777 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1781 if (i
>0) irq_ptr
->input_qs
[i
-1]->slib
->nsliba
=
1782 (unsigned long)(q
->slib
);
1783 q
->slib
->sla
=(unsigned long)(q
->sl
);
1784 q
->slib
->slsba
=(unsigned long)(&q
->slsb
.acc
.val
[0]);
1787 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1788 q
->sl
->element
[j
].sbal
=(unsigned long)(q
->sbal
[j
]);
1790 QDIO_DBF_TEXT2(0,setup
,"sl-sb-b0");
1792 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1793 ptr
=(void*)&q
->slsb
;
1794 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1795 ptr
=(void*)q
->sbal
[0];
1796 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1799 if (!irq_ptr
->is_qebsm
) {
1800 unsigned int count
= 1;
1801 for (j
= 0; j
< QDIO_MAX_BUFFERS_PER_Q
; j
++)
1802 set_slsb(q
, &j
, SLSB_P_INPUT_NOT_INIT
, &count
);
1806 for (i
=0;i
<no_output_qs
;i
++) {
1807 q
=irq_ptr
->output_qs
[i
];
1808 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1810 sprintf(dbf_text
,"outq%4x",i
);
1811 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1812 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1814 memset(q
->slib
,0,PAGE_SIZE
);
1815 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1819 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1820 q
->sbal
[j
]=*(outbound_sbals_array
++);
1822 q
->queue_type
=q_format
;
1823 if ((q
->queue_type
== QDIO_IQDIO_QFMT
) &&
1824 (no_output_qs
> 1) &&
1825 (i
== no_output_qs
-1))
1826 q
->queue_type
= QDIO_IQDIO_QFMT_ASYNCH
;
1827 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 tasklet_init(&q
->tasklet
, qdio_outbound_processing
,
1841 setup_timer(&q
->timer
, qdio_outbound_processing
,
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);*/
1910 static void tiqdio_thinint_handler(void *ind
, void *drv_data
)
1912 QDIO_DBF_TEXT4(0,trace
,"thin_int");
1914 qdio_perf_stat_inc(&perf_stats
.thinints
);
1916 /* SVS only when needed:
1917 * issue SVS to benefit from iqdio interrupt avoidance
1918 * (SVS clears AISOI)*/
1920 tiqdio_clear_global_summary();
1922 tiqdio_inbound_checks();
1926 qdio_set_state(struct qdio_irq
*irq_ptr
, enum qdio_irq_states state
)
1929 #ifdef CONFIG_QDIO_DEBUG
1932 QDIO_DBF_TEXT5(0,trace
,"newstate");
1933 sprintf(dbf_text
,"%4x%4x",irq_ptr
->schid
.sch_no
,state
);
1934 QDIO_DBF_TEXT5(0,trace
,dbf_text
);
1935 #endif /* CONFIG_QDIO_DEBUG */
1937 irq_ptr
->state
=state
;
1938 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
1939 irq_ptr
->input_qs
[i
]->state
=state
;
1940 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
1941 irq_ptr
->output_qs
[i
]->state
=state
;
1946 qdio_irq_check_sense(struct subchannel_id schid
, struct irb
*irb
)
1950 if (irb
->esw
.esw0
.erw
.cons
) {
1951 sprintf(dbf_text
,"sens%4x",schid
.sch_no
);
1952 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
1953 QDIO_DBF_HEX0(0,sense
,irb
,QDIO_DBF_SENSE_LEN
);
1955 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1956 QDIO_HEXDUMP16(WARN
,"irb: ",irb
);
1957 QDIO_HEXDUMP16(WARN
,"sense data: ",irb
->ecw
);
1963 qdio_handle_pci(struct qdio_irq
*irq_ptr
)
1968 qdio_perf_stat_inc(&perf_stats
.pcis
);
1969 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
1970 q
=irq_ptr
->input_qs
[i
];
1971 if (q
->is_input_q
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
)
1974 qdio_perf_stat_dec(&perf_stats
.tl_runs
);
1975 __qdio_inbound_processing(q
);
1978 if (!irq_ptr
->hydra_gives_outbound_pcis
)
1980 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1981 q
=irq_ptr
->output_qs
[i
];
1982 if (qdio_is_outbound_q_done(q
))
1984 qdio_perf_stat_dec(&perf_stats
.tl_runs
);
1985 if (!irq_ptr
->sync_done_on_outb_pcis
)
1987 __qdio_outbound_processing(q
);
1991 static void qdio_establish_handle_irq(struct ccw_device
*, int, int);
1994 qdio_handle_activate_check(struct ccw_device
*cdev
, unsigned long intparm
,
1995 int cstat
, int dstat
)
1997 struct qdio_irq
*irq_ptr
;
2001 irq_ptr
= cdev
->private->qdio_data
;
2003 QDIO_DBF_TEXT2(1, trace
, "ick2");
2004 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2005 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2006 QDIO_DBF_HEX2(0,trace
,&intparm
,sizeof(int));
2007 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2008 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2009 QDIO_PRINT_ERR("received check condition on activate " \
2010 "queues on device %s (cs=x%x, ds=x%x).\n",
2011 cdev
->dev
.bus_id
, cstat
, dstat
);
2012 if (irq_ptr
->no_input_qs
) {
2013 q
=irq_ptr
->input_qs
[0];
2014 } else if (irq_ptr
->no_output_qs
) {
2015 q
=irq_ptr
->output_qs
[0];
2017 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2019 goto omit_handler_call
;
2021 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
2022 QDIO_STATUS_LOOK_FOR_ERROR
,
2023 0,0,0,-1,-1,q
->int_parm
);
2025 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_STOPPED
);
2030 qdio_call_shutdown(struct work_struct
*work
)
2032 struct ccw_device_private
*priv
;
2033 struct ccw_device
*cdev
;
2035 priv
= container_of(work
, struct ccw_device_private
, kick_work
);
2037 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
2038 put_device(&cdev
->dev
);
2042 qdio_timeout_handler(struct ccw_device
*cdev
)
2044 struct qdio_irq
*irq_ptr
;
2047 QDIO_DBF_TEXT2(0, trace
, "qtoh");
2048 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2049 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2051 irq_ptr
= cdev
->private->qdio_data
;
2052 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2053 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2055 switch (irq_ptr
->state
) {
2056 case QDIO_IRQ_STATE_INACTIVE
:
2057 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
2058 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2059 QDIO_DBF_TEXT2(1,setup
,"eq:timeo");
2060 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2062 case QDIO_IRQ_STATE_CLEANUP
:
2063 QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
2065 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2066 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2068 case QDIO_IRQ_STATE_ESTABLISHED
:
2069 case QDIO_IRQ_STATE_ACTIVE
:
2070 /* I/O has been terminated by common I/O layer. */
2071 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2072 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2073 QDIO_DBF_TEXT2(1, trace
, "cio:term");
2074 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_STOPPED
);
2075 if (get_device(&cdev
->dev
)) {
2076 /* Can't call shutdown from interrupt context. */
2077 PREPARE_WORK(&cdev
->private->kick_work
,
2078 qdio_call_shutdown
);
2079 queue_work(ccw_device_work
, &cdev
->private->kick_work
);
2085 wake_up(&cdev
->private->wait_q
);
2089 qdio_handler(struct ccw_device
*cdev
, unsigned long intparm
, struct irb
*irb
)
2091 struct qdio_irq
*irq_ptr
;
2095 #ifdef CONFIG_QDIO_DEBUG
2096 QDIO_DBF_TEXT4(0, trace
, "qint");
2097 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2098 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2099 #endif /* CONFIG_QDIO_DEBUG */
2102 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2103 "handler, device %s\n", cdev
->dev
.bus_id
);
2107 irq_ptr
= cdev
->private->qdio_data
;
2109 QDIO_DBF_TEXT2(1, trace
, "uint");
2110 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2111 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2112 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2118 /* Currently running i/o is in error. */
2119 switch (PTR_ERR(irb
)) {
2121 QDIO_PRINT_ERR("i/o error on device %s\n",
2123 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2124 wake_up(&cdev
->private->wait_q
);
2127 qdio_timeout_handler(cdev
);
2130 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2131 PTR_ERR(irb
), cdev
->dev
.bus_id
);
2136 qdio_irq_check_sense(irq_ptr
->schid
, irb
);
2138 #ifdef CONFIG_QDIO_DEBUG
2139 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2140 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2141 #endif /* CONFIG_QDIO_DEBUG */
2143 cstat
= irb
->scsw
.cmd
.cstat
;
2144 dstat
= irb
->scsw
.cmd
.dstat
;
2146 switch (irq_ptr
->state
) {
2147 case QDIO_IRQ_STATE_INACTIVE
:
2148 qdio_establish_handle_irq(cdev
, cstat
, dstat
);
2151 case QDIO_IRQ_STATE_CLEANUP
:
2152 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2155 case QDIO_IRQ_STATE_ESTABLISHED
:
2156 case QDIO_IRQ_STATE_ACTIVE
:
2157 if (cstat
& SCHN_STAT_PCI
) {
2158 qdio_handle_pci(irq_ptr
);
2162 if ((cstat
&~SCHN_STAT_PCI
)||dstat
) {
2163 qdio_handle_activate_check(cdev
, intparm
, cstat
, dstat
);
2167 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2169 irq_ptr
->state
, cdev
->dev
.bus_id
);
2171 wake_up(&cdev
->private->wait_q
);
2176 qdio_synchronize(struct ccw_device
*cdev
, unsigned int flags
,
2177 unsigned int queue_number
)
2181 struct qdio_irq
*irq_ptr
;
2183 #ifdef CONFIG_QDIO_DEBUG
2184 char dbf_text
[15]="SyncXXXX";
2187 irq_ptr
= cdev
->private->qdio_data
;
2191 #ifdef CONFIG_QDIO_DEBUG
2192 *((int*)(&dbf_text
[4])) = irq_ptr
->schid
.sch_no
;
2193 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2194 *((int*)(&dbf_text
[0]))=flags
;
2195 *((int*)(&dbf_text
[4]))=queue_number
;
2196 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2197 #endif /* CONFIG_QDIO_DEBUG */
2199 if (flags
&QDIO_FLAG_SYNC_INPUT
) {
2200 q
=irq_ptr
->input_qs
[queue_number
];
2203 if (!(irq_ptr
->is_qebsm
))
2204 cc
= do_siga_sync(q
->schid
, 0, q
->mask
);
2205 } else if (flags
&QDIO_FLAG_SYNC_OUTPUT
) {
2206 q
=irq_ptr
->output_qs
[queue_number
];
2209 if (!(irq_ptr
->is_qebsm
))
2210 cc
= do_siga_sync(q
->schid
, q
->mask
, 0);
2216 QDIO_DBF_HEX3(0,trace
,&ptr
,sizeof(int));
2222 qdio_get_ssqd_information(struct subchannel_id
*schid
,
2223 struct qdio_chsc_ssqd
**ssqd_area
)
2227 QDIO_DBF_TEXT0(0, setup
, "getssqd");
2228 *ssqd_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2230 QDIO_PRINT_WARN("Could not get memory for chsc on sch x%x.\n",
2235 (*ssqd_area
)->request
= (struct chsc_header
) {
2239 (*ssqd_area
)->first_sch
= schid
->sch_no
;
2240 (*ssqd_area
)->last_sch
= schid
->sch_no
;
2241 (*ssqd_area
)->ssid
= schid
->ssid
;
2242 result
= chsc(*ssqd_area
);
2245 QDIO_PRINT_WARN("CHSC returned cc %i on sch 0.%x.%x.\n",
2246 result
, schid
->ssid
, schid
->sch_no
);
2250 if ((*ssqd_area
)->response
.code
!= QDIO_CHSC_RESPONSE_CODE_OK
) {
2251 QDIO_PRINT_WARN("CHSC response is 0x%x on sch 0.%x.%x.\n",
2252 (*ssqd_area
)->response
.code
,
2253 schid
->ssid
, schid
->sch_no
);
2256 if (!((*ssqd_area
)->flags
& CHSC_FLAG_QDIO_CAPABILITY
) ||
2257 !((*ssqd_area
)->flags
& CHSC_FLAG_VALIDITY
) ||
2258 ((*ssqd_area
)->sch
!= schid
->sch_no
)) {
2259 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2260 "using all SIGAs.\n",
2261 schid
->ssid
, schid
->sch_no
);
2270 qdio_get_ssqd_pct(struct ccw_device
*cdev
)
2272 struct qdio_chsc_ssqd
*ssqd_area
;
2273 struct subchannel_id schid
;
2278 QDIO_DBF_TEXT0(0, setup
, "getpct");
2279 schid
= ccw_device_get_subchannel_id(cdev
);
2280 rc
= qdio_get_ssqd_information(&schid
, &ssqd_area
);
2282 pct
= (int)ssqd_area
->pct
;
2284 mempool_free(ssqd_area
, qdio_mempool_scssc
);
2285 sprintf(dbf_text
, "pct: %d", pct
);
2286 QDIO_DBF_TEXT2(0, setup
, dbf_text
);
2289 EXPORT_SYMBOL(qdio_get_ssqd_pct
);
2292 qdio_check_subchannel_qebsm(struct qdio_irq
*irq_ptr
, unsigned long token
)
2296 unsigned int count
, start_buf
;
2299 /*check if QEBSM is disabled */
2300 if (!(irq_ptr
->is_qebsm
) || !(irq_ptr
->qdioac
& 0x01)) {
2301 irq_ptr
->is_qebsm
= 0;
2302 irq_ptr
->sch_token
= 0;
2303 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2304 QDIO_DBF_TEXT0(0,setup
,"noV=V");
2307 irq_ptr
->sch_token
= token
;
2309 for (i
= 0; i
< irq_ptr
->no_input_qs
;i
++) {
2310 q
= irq_ptr
->input_qs
[i
];
2311 count
= QDIO_MAX_BUFFERS_PER_Q
;
2313 set_slsb(q
, &start_buf
, SLSB_P_INPUT_NOT_INIT
, &count
);
2315 sprintf(dbf_text
,"V=V:%2x",irq_ptr
->is_qebsm
);
2316 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2317 sprintf(dbf_text
,"%8lx",irq_ptr
->sch_token
);
2318 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2320 for (i
= 0; i
< irq_ptr
->no_output_qs
; i
++) {
2321 q
= irq_ptr
->output_qs
[i
];
2322 count
= QDIO_MAX_BUFFERS_PER_Q
;
2324 set_slsb(q
, &start_buf
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
2329 qdio_get_ssqd_siga(struct qdio_irq
*irq_ptr
)
2332 struct qdio_chsc_ssqd
*ssqd_area
;
2334 QDIO_DBF_TEXT0(0,setup
,"getssqd");
2335 irq_ptr
->qdioac
= 0;
2336 rc
= qdio_get_ssqd_information(&irq_ptr
->schid
, &ssqd_area
);
2338 QDIO_PRINT_WARN("using all SIGAs for sch x%x.n",
2339 irq_ptr
->schid
.sch_no
);
2340 irq_ptr
->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;
2345 irq_ptr
->qdioac
= ssqd_area
->qdioac1
;
2347 qdio_check_subchannel_qebsm(irq_ptr
, ssqd_area
->sch_token
);
2349 mempool_free(ssqd_area
, qdio_mempool_scssc
);
2353 tiqdio_check_chsc_availability(void)
2357 /* Check for bit 41. */
2358 if (!css_general_characteristics
.aif
) {
2359 QDIO_PRINT_WARN("Adapter interruption facility not " \
2364 /* Check for bits 107 and 108. */
2365 if (!css_chsc_characteristics
.scssc
||
2366 !css_chsc_characteristics
.scsscf
) {
2367 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2368 "not available.\n");
2372 /* Check for OSA/FCP thin interrupts (bit 67). */
2373 hydra_thinints
= css_general_characteristics
.aif_osa
;
2374 sprintf(dbf_text
,"hydrati%1x", hydra_thinints
);
2375 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2378 /* Check for QEBSM support in general (bit 58). */
2379 is_passthrough
= css_general_characteristics
.qebsm
;
2381 sprintf(dbf_text
,"cssQBS:%1x", is_passthrough
);
2382 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2384 /* Check for aif time delay disablement fac (bit 56). If installed,
2385 * omit svs even under lpar (good point by rick again) */
2386 omit_svs
= css_general_characteristics
.aif_tdd
;
2387 sprintf(dbf_text
,"omitsvs%1x", omit_svs
);
2388 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2394 tiqdio_set_subchannel_ind(struct qdio_irq
*irq_ptr
, int reset_to_zero
)
2396 unsigned long real_addr_local_summary_bit
;
2397 unsigned long real_addr_dev_st_chg_ind
;
2401 unsigned int resp_code
;
2405 struct chsc_header request
;
2410 u64 summary_indicator_addr
;
2411 u64 subchannel_indicator_addr
;
2416 u32 word_with_d_bit
;
2417 /* set to 0x10000000 to enable
2418 * time delay disablement facility */
2420 struct subchannel_id schid
;
2421 u32 reserved6
[1004];
2422 struct chsc_header response
;
2426 if (!irq_ptr
->is_thinint_irq
)
2429 if (reset_to_zero
) {
2430 real_addr_local_summary_bit
=0;
2431 real_addr_dev_st_chg_ind
=0;
2433 real_addr_local_summary_bit
=
2434 virt_to_phys((volatile void *)tiqdio_ind
);
2435 real_addr_dev_st_chg_ind
=
2436 virt_to_phys((volatile void *)irq_ptr
->dev_st_chg_ind
);
2439 scssc_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2441 QDIO_PRINT_WARN("No memory for setting indicators on " \
2442 "subchannel 0.%x.%x.\n",
2443 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2446 scssc_area
->request
= (struct chsc_header
) {
2450 scssc_area
->operation_code
= 0;
2452 scssc_area
->summary_indicator_addr
= real_addr_local_summary_bit
;
2453 scssc_area
->subchannel_indicator_addr
= real_addr_dev_st_chg_ind
;
2454 scssc_area
->ks
= QDIO_STORAGE_KEY
;
2455 scssc_area
->kc
= QDIO_STORAGE_KEY
;
2456 scssc_area
->isc
= TIQDIO_THININT_ISC
;
2457 scssc_area
->schid
= irq_ptr
->schid
;
2458 /* enables the time delay disablement facility. Don't care
2459 * whether it is really there (i.e. we haven't checked for
2461 if (css_general_characteristics
.aif_tdd
)
2462 scssc_area
->word_with_d_bit
= 0x10000000;
2464 QDIO_PRINT_WARN("Time delay disablement facility " \
2467 result
= chsc(scssc_area
);
2469 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2471 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,result
);
2476 resp_code
= scssc_area
->response
.code
;
2477 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2478 QDIO_PRINT_WARN("response upon setting indicators " \
2479 "is 0x%x.\n",resp_code
);
2480 sprintf(dbf_text
,"sidR%4x",resp_code
);
2481 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2482 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2483 ptr
=&scssc_area
->response
;
2484 QDIO_DBF_HEX2(1,setup
,&ptr
,QDIO_DBF_SETUP_LEN
);
2489 QDIO_DBF_TEXT2(0,setup
,"setscind");
2490 QDIO_DBF_HEX2(0,setup
,&real_addr_local_summary_bit
,
2491 sizeof(unsigned long));
2492 QDIO_DBF_HEX2(0,setup
,&real_addr_dev_st_chg_ind
,sizeof(unsigned long));
2495 mempool_free(scssc_area
, qdio_mempool_scssc
);
2501 tiqdio_set_delay_target(struct qdio_irq
*irq_ptr
, unsigned long delay_target
)
2503 unsigned int resp_code
;
2509 struct chsc_header request
;
2516 u32 reserved5
[1009];
2517 struct chsc_header response
;
2521 if (!irq_ptr
->is_thinint_irq
)
2524 scsscf_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2526 QDIO_PRINT_WARN("No memory for setting delay target on " \
2527 "subchannel 0.%x.%x.\n",
2528 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2531 scsscf_area
->request
= (struct chsc_header
) {
2536 scsscf_area
->delay_target
= delay_target
<<16;
2538 result
=chsc(scsscf_area
);
2540 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2541 "cc=%i. Continuing.\n",
2542 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2548 resp_code
= scsscf_area
->response
.code
;
2549 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2550 QDIO_PRINT_WARN("response upon setting delay target " \
2551 "is 0x%x. Continuing.\n",resp_code
);
2552 sprintf(dbf_text
,"sdtR%4x",resp_code
);
2553 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2554 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2555 ptr
=&scsscf_area
->response
;
2556 QDIO_DBF_HEX2(1,trace
,&ptr
,QDIO_DBF_TRACE_LEN
);
2558 QDIO_DBF_TEXT2(0,trace
,"delytrgt");
2559 QDIO_DBF_HEX2(0,trace
,&delay_target
,sizeof(unsigned long));
2560 result
= 0; /* not critical */
2562 mempool_free(scsscf_area
, qdio_mempool_scssc
);
2567 qdio_cleanup(struct ccw_device
*cdev
, int how
)
2569 struct qdio_irq
*irq_ptr
;
2573 irq_ptr
= cdev
->private->qdio_data
;
2577 sprintf(dbf_text
,"qcln%4x",irq_ptr
->schid
.sch_no
);
2578 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2579 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2581 rc
= qdio_shutdown(cdev
, how
);
2582 if ((rc
== 0) || (rc
== -EINPROGRESS
))
2583 rc
= qdio_free(cdev
);
2588 qdio_shutdown(struct ccw_device
*cdev
, int how
)
2590 struct qdio_irq
*irq_ptr
;
2594 unsigned long flags
;
2598 irq_ptr
= cdev
->private->qdio_data
;
2602 down(&irq_ptr
->setting_up_sema
);
2604 sprintf(dbf_text
,"qsqs%4x",irq_ptr
->schid
.sch_no
);
2605 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2606 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2608 /* mark all qs as uninteresting */
2609 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
2610 atomic_set(&irq_ptr
->input_qs
[i
]->is_in_shutdown
,1);
2612 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
2613 atomic_set(&irq_ptr
->output_qs
[i
]->is_in_shutdown
,1);
2615 tasklet_kill(&tiqdio_tasklet
);
2617 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2618 qdio_unmark_q(irq_ptr
->input_qs
[i
]);
2619 tasklet_kill(&irq_ptr
->input_qs
[i
]->tasklet
);
2620 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2621 !atomic_read(&irq_ptr
->
2624 QDIO_NO_USE_COUNT_TIMEOUT
);
2625 if (atomic_read(&irq_ptr
->input_qs
[i
]->use_count
))
2626 result
=-EINPROGRESS
;
2629 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2630 tasklet_kill(&irq_ptr
->output_qs
[i
]->tasklet
);
2631 del_timer(&irq_ptr
->output_qs
[i
]->timer
);
2632 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2633 !atomic_read(&irq_ptr
->
2636 QDIO_NO_USE_COUNT_TIMEOUT
);
2637 if (atomic_read(&irq_ptr
->output_qs
[i
]->use_count
))
2638 result
=-EINPROGRESS
;
2641 /* cleanup subchannel */
2642 spin_lock_irqsave(get_ccwdev_lock(cdev
),flags
);
2643 if (how
&QDIO_FLAG_CLEANUP_USING_CLEAR
) {
2644 rc
= ccw_device_clear(cdev
, QDIO_DOING_CLEANUP
);
2645 timeout
=QDIO_CLEANUP_CLEAR_TIMEOUT
;
2646 } else if (how
&QDIO_FLAG_CLEANUP_USING_HALT
) {
2647 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2648 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2649 } else { /* default behaviour */
2650 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2651 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2653 if (rc
== -ENODEV
) {
2654 /* No need to wait for device no longer present. */
2655 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2656 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2657 } else if (((void *)cdev
->handler
!= (void *)qdio_handler
) && rc
== 0) {
2659 * Whoever put another handler there, has to cope with the
2660 * interrupt theirself. Might happen if qdio_shutdown was
2661 * called on already shutdown queues, but this shouldn't have
2664 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2665 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2666 } else if (rc
== 0) {
2667 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_CLEANUP
);
2668 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),flags
);
2670 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2671 irq_ptr
->state
== QDIO_IRQ_STATE_INACTIVE
||
2672 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
,
2675 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2676 "device %s\n", result
, cdev
->dev
.bus_id
);
2677 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2681 if (irq_ptr
->is_thinint_irq
) {
2682 qdio_put_indicator((__u32
*)irq_ptr
->dev_st_chg_ind
);
2683 tiqdio_set_subchannel_ind(irq_ptr
,1);
2684 /* reset adapter interrupt indicators */
2687 /* exchange int handlers, if necessary */
2688 if ((void*)cdev
->handler
== (void*)qdio_handler
)
2689 cdev
->handler
=irq_ptr
->original_int_handler
;
2691 /* Ignore errors. */
2692 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2694 up(&irq_ptr
->setting_up_sema
);
2699 qdio_free(struct ccw_device
*cdev
)
2701 struct qdio_irq
*irq_ptr
;
2704 irq_ptr
= cdev
->private->qdio_data
;
2708 down(&irq_ptr
->setting_up_sema
);
2710 sprintf(dbf_text
,"qfqs%4x",irq_ptr
->schid
.sch_no
);
2711 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2712 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2714 cdev
->private->qdio_data
= NULL
;
2716 up(&irq_ptr
->setting_up_sema
);
2718 qdio_release_irq_memory(irq_ptr
);
2719 module_put(THIS_MODULE
);
2724 qdio_allocate_do_dbf(struct qdio_initialize
*init_data
)
2726 char dbf_text
[20]; /* if a printf printed out more than 8 chars */
2728 sprintf(dbf_text
,"qfmt:%x",init_data
->q_format
);
2729 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2730 QDIO_DBF_HEX0(0,setup
,init_data
->adapter_name
,8);
2731 sprintf(dbf_text
,"qpff%4x",init_data
->qib_param_field_format
);
2732 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2733 QDIO_DBF_HEX0(0,setup
,&init_data
->qib_param_field
,sizeof(char*));
2734 QDIO_DBF_HEX0(0,setup
,&init_data
->input_slib_elements
,sizeof(long*));
2735 QDIO_DBF_HEX0(0,setup
,&init_data
->output_slib_elements
,sizeof(long*));
2736 sprintf(dbf_text
,"miit%4x",init_data
->min_input_threshold
);
2737 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2738 sprintf(dbf_text
,"mait%4x",init_data
->max_input_threshold
);
2739 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2740 sprintf(dbf_text
,"miot%4x",init_data
->min_output_threshold
);
2741 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2742 sprintf(dbf_text
,"maot%4x",init_data
->max_output_threshold
);
2743 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2744 sprintf(dbf_text
,"niq:%4x",init_data
->no_input_qs
);
2745 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2746 sprintf(dbf_text
,"noq:%4x",init_data
->no_output_qs
);
2747 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2748 QDIO_DBF_HEX0(0,setup
,&init_data
->input_handler
,sizeof(void*));
2749 QDIO_DBF_HEX0(0,setup
,&init_data
->output_handler
,sizeof(void*));
2750 QDIO_DBF_HEX0(0,setup
,&init_data
->int_parm
,sizeof(long));
2751 QDIO_DBF_HEX0(0,setup
,&init_data
->flags
,sizeof(long));
2752 QDIO_DBF_HEX0(0,setup
,&init_data
->input_sbal_addr_array
,sizeof(void*));
2753 QDIO_DBF_HEX0(0,setup
,&init_data
->output_sbal_addr_array
,sizeof(void*));
2757 qdio_allocate_fill_input_desc(struct qdio_irq
*irq_ptr
, int i
, int iqfmt
)
2759 irq_ptr
->input_qs
[i
]->is_iqdio_q
= iqfmt
;
2760 irq_ptr
->input_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2762 irq_ptr
->qdr
->qdf0
[i
].sliba
=(unsigned long)(irq_ptr
->input_qs
[i
]->slib
);
2764 irq_ptr
->qdr
->qdf0
[i
].sla
=(unsigned long)(irq_ptr
->input_qs
[i
]->sl
);
2766 irq_ptr
->qdr
->qdf0
[i
].slsba
=
2767 (unsigned long)(&irq_ptr
->input_qs
[i
]->slsb
.acc
.val
[0]);
2769 irq_ptr
->qdr
->qdf0
[i
].akey
=QDIO_STORAGE_KEY
;
2770 irq_ptr
->qdr
->qdf0
[i
].bkey
=QDIO_STORAGE_KEY
;
2771 irq_ptr
->qdr
->qdf0
[i
].ckey
=QDIO_STORAGE_KEY
;
2772 irq_ptr
->qdr
->qdf0
[i
].dkey
=QDIO_STORAGE_KEY
;
2776 qdio_allocate_fill_output_desc(struct qdio_irq
*irq_ptr
, int i
,
2779 irq_ptr
->output_qs
[i
]->is_iqdio_q
= iqfmt
;
2780 irq_ptr
->output_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2782 irq_ptr
->qdr
->qdf0
[i
+j
].sliba
=(unsigned long)(irq_ptr
->output_qs
[i
]->slib
);
2784 irq_ptr
->qdr
->qdf0
[i
+j
].sla
=(unsigned long)(irq_ptr
->output_qs
[i
]->sl
);
2786 irq_ptr
->qdr
->qdf0
[i
+j
].slsba
=
2787 (unsigned long)(&irq_ptr
->output_qs
[i
]->slsb
.acc
.val
[0]);
2789 irq_ptr
->qdr
->qdf0
[i
+j
].akey
=QDIO_STORAGE_KEY
;
2790 irq_ptr
->qdr
->qdf0
[i
+j
].bkey
=QDIO_STORAGE_KEY
;
2791 irq_ptr
->qdr
->qdf0
[i
+j
].ckey
=QDIO_STORAGE_KEY
;
2792 irq_ptr
->qdr
->qdf0
[i
+j
].dkey
=QDIO_STORAGE_KEY
;
2797 qdio_initialize_set_siga_flags_input(struct qdio_irq
*irq_ptr
)
2801 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2802 irq_ptr
->input_qs
[i
]->siga_sync
=
2803 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2804 irq_ptr
->input_qs
[i
]->siga_in
=
2805 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2806 irq_ptr
->input_qs
[i
]->siga_out
=
2807 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2808 irq_ptr
->input_qs
[i
]->siga_sync_done_on_thinints
=
2809 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2810 irq_ptr
->input_qs
[i
]->hydra_gives_outbound_pcis
=
2811 irq_ptr
->hydra_gives_outbound_pcis
;
2812 irq_ptr
->input_qs
[i
]->siga_sync_done_on_outb_tis
=
2814 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2815 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2816 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2817 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2823 qdio_initialize_set_siga_flags_output(struct qdio_irq
*irq_ptr
)
2827 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2828 irq_ptr
->output_qs
[i
]->siga_sync
=
2829 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2830 irq_ptr
->output_qs
[i
]->siga_in
=
2831 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2832 irq_ptr
->output_qs
[i
]->siga_out
=
2833 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2834 irq_ptr
->output_qs
[i
]->siga_sync_done_on_thinints
=
2835 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2836 irq_ptr
->output_qs
[i
]->hydra_gives_outbound_pcis
=
2837 irq_ptr
->hydra_gives_outbound_pcis
;
2838 irq_ptr
->output_qs
[i
]->siga_sync_done_on_outb_tis
=
2840 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2841 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2842 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2843 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2849 qdio_establish_irq_check_for_errors(struct ccw_device
*cdev
, int cstat
,
2853 struct qdio_irq
*irq_ptr
;
2855 irq_ptr
= cdev
->private->qdio_data
;
2857 if (cstat
|| (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
))) {
2858 sprintf(dbf_text
,"ick1%4x",irq_ptr
->schid
.sch_no
);
2859 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2860 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2861 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2862 QDIO_PRINT_ERR("received check condition on establish " \
2863 "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2864 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2866 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ERR
);
2869 if (!(dstat
& DEV_STAT_DEV_END
)) {
2870 QDIO_DBF_TEXT2(1,setup
,"eq:no de");
2871 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2872 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2873 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
2874 "device end: dstat=%02x, cstat=%02x\n",
2875 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2877 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2881 if (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
)) {
2882 QDIO_DBF_TEXT2(1,setup
,"eq:badio");
2883 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2884 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2885 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
2886 "the following devstat: dstat=%02x, "
2887 "cstat=%02x\n", irq_ptr
->schid
.ssid
,
2888 irq_ptr
->schid
.sch_no
, dstat
, cstat
);
2889 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2896 qdio_establish_handle_irq(struct ccw_device
*cdev
, int cstat
, int dstat
)
2898 struct qdio_irq
*irq_ptr
;
2901 irq_ptr
= cdev
->private->qdio_data
;
2903 sprintf(dbf_text
,"qehi%4x",cdev
->private->schid
.sch_no
);
2904 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2905 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2907 if (qdio_establish_irq_check_for_errors(cdev
, cstat
, dstat
))
2910 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ESTABLISHED
);
2914 qdio_initialize(struct qdio_initialize
*init_data
)
2919 sprintf(dbf_text
,"qini%4x",init_data
->cdev
->private->schid
.sch_no
);
2920 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2921 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2923 rc
= qdio_allocate(init_data
);
2925 rc
= qdio_establish(init_data
);
2927 qdio_free(init_data
->cdev
);
2935 qdio_allocate(struct qdio_initialize
*init_data
)
2937 struct qdio_irq
*irq_ptr
;
2940 sprintf(dbf_text
,"qalc%4x",init_data
->cdev
->private->schid
.sch_no
);
2941 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2942 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2943 if ( (init_data
->no_input_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2944 (init_data
->no_output_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2945 ((init_data
->no_input_qs
) && (!init_data
->input_handler
)) ||
2946 ((init_data
->no_output_qs
) && (!init_data
->output_handler
)) )
2949 if (!init_data
->input_sbal_addr_array
)
2952 if (!init_data
->output_sbal_addr_array
)
2955 qdio_allocate_do_dbf(init_data
);
2958 irq_ptr
= (void *) get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
2960 QDIO_DBF_TEXT0(0,setup
,"irq_ptr:");
2961 QDIO_DBF_HEX0(0,setup
,&irq_ptr
,sizeof(void*));
2964 QDIO_PRINT_ERR("allocation of irq_ptr failed!\n");
2968 init_MUTEX(&irq_ptr
->setting_up_sema
);
2970 /* QDR must be in DMA area since CCW data address is only 32 bit */
2971 irq_ptr
->qdr
= (struct qdr
*) __get_free_page(GFP_KERNEL
| GFP_DMA
);
2972 if (!(irq_ptr
->qdr
)) {
2973 free_page((unsigned long) irq_ptr
);
2974 QDIO_PRINT_ERR("allocation of irq_ptr->qdr failed!\n");
2977 QDIO_DBF_TEXT0(0,setup
,"qdr:");
2978 QDIO_DBF_HEX0(0,setup
,&irq_ptr
->qdr
,sizeof(void*));
2980 if (qdio_alloc_qs(irq_ptr
,
2981 init_data
->no_input_qs
,
2982 init_data
->no_output_qs
)) {
2983 QDIO_PRINT_ERR("queue allocation failed!\n");
2984 qdio_release_irq_memory(irq_ptr
);
2988 init_data
->cdev
->private->qdio_data
= irq_ptr
;
2990 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_INACTIVE
);
2995 static int qdio_fill_irq(struct qdio_initialize
*init_data
)
3001 struct qdio_irq
*irq_ptr
;
3003 irq_ptr
= init_data
->cdev
->private->qdio_data
;
3005 memset(irq_ptr
,0,((char*)&irq_ptr
->qdr
)-((char*)irq_ptr
));
3007 /* wipes qib.ac, required by ar7063 */
3008 memset(irq_ptr
->qdr
,0,sizeof(struct qdr
));
3010 irq_ptr
->int_parm
=init_data
->int_parm
;
3012 irq_ptr
->schid
= ccw_device_get_subchannel_id(init_data
->cdev
);
3013 irq_ptr
->no_input_qs
=init_data
->no_input_qs
;
3014 irq_ptr
->no_output_qs
=init_data
->no_output_qs
;
3016 if (init_data
->q_format
==QDIO_IQDIO_QFMT
) {
3017 irq_ptr
->is_iqdio_irq
=1;
3018 irq_ptr
->is_thinint_irq
=1;
3020 irq_ptr
->is_iqdio_irq
=0;
3021 irq_ptr
->is_thinint_irq
=hydra_thinints
;
3023 sprintf(dbf_text
,"is_i_t%1x%1x",
3024 irq_ptr
->is_iqdio_irq
,irq_ptr
->is_thinint_irq
);
3025 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3027 if (irq_ptr
->is_thinint_irq
) {
3028 irq_ptr
->dev_st_chg_ind
= qdio_get_indicator();
3029 QDIO_DBF_HEX1(0,setup
,&irq_ptr
->dev_st_chg_ind
,sizeof(void*));
3030 if (!irq_ptr
->dev_st_chg_ind
) {
3031 QDIO_PRINT_WARN("no indicator location available " \
3032 "for irq 0.%x.%x\n",
3033 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
3034 qdio_release_irq_memory(irq_ptr
);
3040 irq_ptr
->equeue
.cmd
=DEFAULT_ESTABLISH_QS_CMD
;
3041 irq_ptr
->equeue
.count
=DEFAULT_ESTABLISH_QS_COUNT
;
3042 irq_ptr
->aqueue
.cmd
=DEFAULT_ACTIVATE_QS_CMD
;
3043 irq_ptr
->aqueue
.count
=DEFAULT_ACTIVATE_QS_COUNT
;
3045 qdio_fill_qs(irq_ptr
, init_data
->cdev
,
3046 init_data
->no_input_qs
,
3047 init_data
->no_output_qs
,
3048 init_data
->input_handler
,
3049 init_data
->output_handler
,init_data
->int_parm
,
3050 init_data
->q_format
,init_data
->flags
,
3051 init_data
->input_sbal_addr_array
,
3052 init_data
->output_sbal_addr_array
);
3054 if (!try_module_get(THIS_MODULE
)) {
3055 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3056 qdio_release_irq_memory(irq_ptr
);
3060 qdio_fill_thresholds(irq_ptr
,init_data
->no_input_qs
,
3061 init_data
->no_output_qs
,
3062 init_data
->min_input_threshold
,
3063 init_data
->max_input_threshold
,
3064 init_data
->min_output_threshold
,
3065 init_data
->max_output_threshold
);
3068 irq_ptr
->qdr
->qfmt
=init_data
->q_format
;
3069 irq_ptr
->qdr
->iqdcnt
=init_data
->no_input_qs
;
3070 irq_ptr
->qdr
->oqdcnt
=init_data
->no_output_qs
;
3071 irq_ptr
->qdr
->iqdsz
=sizeof(struct qdesfmt0
)/4; /* size in words */
3072 irq_ptr
->qdr
->oqdsz
=sizeof(struct qdesfmt0
)/4;
3074 irq_ptr
->qdr
->qiba
=(unsigned long)&irq_ptr
->qib
;
3075 irq_ptr
->qdr
->qkey
=QDIO_STORAGE_KEY
;
3078 irq_ptr
->is_qebsm
= is_passthrough
;
3079 if (irq_ptr
->is_qebsm
)
3080 irq_ptr
->qib
.rflags
|= QIB_RFLAGS_ENABLE_QEBSM
;
3082 irq_ptr
->qib
.qfmt
=init_data
->q_format
;
3083 if (init_data
->no_input_qs
)
3084 irq_ptr
->qib
.isliba
=(unsigned long)(irq_ptr
->input_qs
[0]->slib
);
3085 if (init_data
->no_output_qs
)
3086 irq_ptr
->qib
.osliba
=(unsigned long)(irq_ptr
->output_qs
[0]->slib
);
3087 memcpy(irq_ptr
->qib
.ebcnam
,init_data
->adapter_name
,8);
3089 qdio_set_impl_params(irq_ptr
,init_data
->qib_param_field_format
,
3090 init_data
->qib_param_field
,
3091 init_data
->no_input_qs
,
3092 init_data
->no_output_qs
,
3093 init_data
->input_slib_elements
,
3094 init_data
->output_slib_elements
);
3096 /* first input descriptors, then output descriptors */
3097 is_iqdio
= (init_data
->q_format
== QDIO_IQDIO_QFMT
) ? 1 : 0;
3098 for (i
=0;i
<init_data
->no_input_qs
;i
++)
3099 qdio_allocate_fill_input_desc(irq_ptr
, i
, is_iqdio
);
3101 for (i
=0;i
<init_data
->no_output_qs
;i
++)
3102 qdio_allocate_fill_output_desc(irq_ptr
, i
,
3103 init_data
->no_input_qs
,
3106 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3108 /* get qdio commands */
3109 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_EQUEUE
);
3111 QDIO_DBF_TEXT2(1,setup
,"no eq");
3112 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3113 "Trying to use default.\n");
3115 irq_ptr
->equeue
= *ciw
;
3116 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_AQUEUE
);
3118 QDIO_DBF_TEXT2(1,setup
,"no aq");
3119 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3120 "Trying to use default.\n");
3122 irq_ptr
->aqueue
= *ciw
;
3124 /* Set new interrupt handler. */
3125 irq_ptr
->original_int_handler
= init_data
->cdev
->handler
;
3126 init_data
->cdev
->handler
= qdio_handler
;
3132 qdio_establish(struct qdio_initialize
*init_data
)
3134 struct qdio_irq
*irq_ptr
;
3135 unsigned long saveflags
;
3136 int result
, result2
;
3137 struct ccw_device
*cdev
;
3140 cdev
=init_data
->cdev
;
3141 irq_ptr
= cdev
->private->qdio_data
;
3145 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3148 down(&irq_ptr
->setting_up_sema
);
3150 qdio_fill_irq(init_data
);
3152 /* the thinint CHSC stuff */
3153 if (irq_ptr
->is_thinint_irq
) {
3155 result
= tiqdio_set_subchannel_ind(irq_ptr
,0);
3157 up(&irq_ptr
->setting_up_sema
);
3158 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3161 tiqdio_set_delay_target(irq_ptr
,TIQDIO_DELAY_TARGET
);
3164 sprintf(dbf_text
,"qest%4x",cdev
->private->schid
.sch_no
);
3165 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3166 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
3169 irq_ptr
->ccw
.cmd_code
=irq_ptr
->equeue
.cmd
;
3170 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3171 irq_ptr
->ccw
.count
=irq_ptr
->equeue
.count
;
3172 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(irq_ptr
->qdr
);
3174 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3176 ccw_device_set_options_mask(cdev
, 0);
3177 result
= ccw_device_start(cdev
, &irq_ptr
->ccw
,
3178 QDIO_DOING_ESTABLISH
, 0, 0);
3180 result2
= ccw_device_start(cdev
, &irq_ptr
->ccw
,
3181 QDIO_DOING_ESTABLISH
, 0, 0);
3182 sprintf(dbf_text
,"eq:io%4x",result
);
3183 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3185 sprintf(dbf_text
,"eq:io%4x",result
);
3186 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3188 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3189 "returned %i, next try returned %i\n",
3190 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3195 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3198 up(&irq_ptr
->setting_up_sema
);
3199 qdio_shutdown(cdev
,QDIO_FLAG_CLEANUP_USING_CLEAR
);
3203 wait_event_interruptible_timeout(cdev
->private->wait_q
,
3204 irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
||
3205 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
,
3206 QDIO_ESTABLISH_TIMEOUT
);
3208 if (irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
)
3211 up(&irq_ptr
->setting_up_sema
);
3212 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3216 qdio_get_ssqd_siga(irq_ptr
);
3217 /* if this gets set once, we're running under VM and can omit SVSes */
3218 if (irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
)
3221 sprintf(dbf_text
,"qdioac%2x",irq_ptr
->qdioac
);
3222 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3224 sprintf(dbf_text
,"qib ac%2x",irq_ptr
->qib
.ac
);
3225 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3227 irq_ptr
->hydra_gives_outbound_pcis
=
3228 irq_ptr
->qib
.ac
&QIB_AC_OUTBOUND_PCI_SUPPORTED
;
3229 irq_ptr
->sync_done_on_outb_pcis
=
3230 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
;
3232 qdio_initialize_set_siga_flags_input(irq_ptr
);
3233 qdio_initialize_set_siga_flags_output(irq_ptr
);
3235 up(&irq_ptr
->setting_up_sema
);
3242 qdio_activate(struct ccw_device
*cdev
, int flags
)
3244 struct qdio_irq
*irq_ptr
;
3245 int i
,result
=0,result2
;
3246 unsigned long saveflags
;
3247 char dbf_text
[20]; /* see qdio_initialize */
3249 irq_ptr
= cdev
->private->qdio_data
;
3253 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3256 down(&irq_ptr
->setting_up_sema
);
3257 if (irq_ptr
->state
==QDIO_IRQ_STATE_INACTIVE
) {
3262 sprintf(dbf_text
,"qact%4x", irq_ptr
->schid
.sch_no
);
3263 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3264 QDIO_DBF_TEXT2(0,trace
,dbf_text
);
3267 irq_ptr
->ccw
.cmd_code
=irq_ptr
->aqueue
.cmd
;
3268 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3269 irq_ptr
->ccw
.count
=irq_ptr
->aqueue
.count
;
3270 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(0);
3272 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3274 ccw_device_set_options(cdev
, CCWDEV_REPORT_ALL
);
3275 result
=ccw_device_start(cdev
,&irq_ptr
->ccw
,QDIO_DOING_ACTIVATE
,
3276 0, DOIO_DENY_PREFETCH
);
3278 result2
=ccw_device_start(cdev
,&irq_ptr
->ccw
,
3279 QDIO_DOING_ACTIVATE
,0,0);
3280 sprintf(dbf_text
,"aq:io%4x",result
);
3281 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3283 sprintf(dbf_text
,"aq:io%4x",result
);
3284 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3286 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3287 "returned %i, next try returned %i\n",
3288 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3293 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3297 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3298 if (irq_ptr
->is_thinint_irq
) {
3300 * that way we know, that, if we will get interrupted
3301 * by tiqdio_inbound_processing, qdio_unmark_q will
3304 qdio_reserve_q(irq_ptr
->input_qs
[i
]);
3305 qdio_mark_tiq(irq_ptr
->input_qs
[i
]);
3306 qdio_release_q(irq_ptr
->input_qs
[i
]);
3310 if (flags
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
) {
3311 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3312 irq_ptr
->input_qs
[i
]->is_input_q
|=
3313 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
;
3317 msleep(QDIO_ACTIVATE_TIMEOUT
);
3318 switch (irq_ptr
->state
) {
3319 case QDIO_IRQ_STATE_STOPPED
:
3320 case QDIO_IRQ_STATE_ERR
:
3321 up(&irq_ptr
->setting_up_sema
);
3322 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3323 down(&irq_ptr
->setting_up_sema
);
3327 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ACTIVE
);
3331 up(&irq_ptr
->setting_up_sema
);
3336 /* buffers filled forwards again to make Rick happy */
3338 qdio_do_qdio_fill_input(struct qdio_q
*q
, unsigned int qidx
,
3339 unsigned int count
, struct qdio_buffer
*buffers
)
3341 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3344 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3345 if (irq
->is_qebsm
) {
3347 tmp
= set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3354 set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3357 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3362 qdio_do_qdio_fill_output(struct qdio_q
*q
, unsigned int qidx
,
3363 unsigned int count
, struct qdio_buffer
*buffers
)
3365 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3368 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3369 if (irq
->is_qebsm
) {
3371 tmp
= set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3379 set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3382 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3387 do_qdio_handle_inbound(struct qdio_q
*q
, unsigned int callflags
,
3388 unsigned int qidx
, unsigned int count
,
3389 struct qdio_buffer
*buffers
)
3393 /* This is the inbound handling of queues */
3394 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3396 qdio_do_qdio_fill_input(q
,qidx
,count
,buffers
);
3398 if ((used_elements
+count
==QDIO_MAX_BUFFERS_PER_Q
)&&
3399 (callflags
&QDIO_FLAG_UNDER_INTERRUPT
))
3400 atomic_xchg(&q
->polling
,0);
3404 if (callflags
&QDIO_FLAG_DONT_SIGA
)
3409 result
=qdio_siga_input(q
);
3412 q
->error_status_flags
|=
3413 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
3414 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
3415 q
->siga_error
=result
;
3423 do_qdio_handle_outbound(struct qdio_q
*q
, unsigned int callflags
,
3424 unsigned int qidx
, unsigned int count
,
3425 struct qdio_buffer
*buffers
)
3428 unsigned int cnt
, start_buf
;
3429 unsigned char state
= 0;
3430 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3432 /* This is the outbound handling of queues */
3433 qdio_do_qdio_fill_output(q
,qidx
,count
,buffers
);
3435 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3437 if (callflags
&QDIO_FLAG_DONT_SIGA
) {
3438 qdio_perf_stat_inc(&perf_stats
.outbound_cnt
);
3441 if (callflags
& QDIO_FLAG_PCI_OUT
)
3445 if (q
->is_iqdio_q
) {
3446 /* one siga for every sbal */
3448 qdio_kick_outbound_q(q
);
3450 __qdio_outbound_processing(q
);
3452 /* under VM, we do a SIGA sync unconditionally */
3456 * w/o shadow queues (else branch of
3457 * SYNC_MEMORY :-/ ), we try to
3458 * fast-requeue buffers
3460 if (irq
->is_qebsm
) {
3462 start_buf
= ((qidx
+QDIO_MAX_BUFFERS_PER_Q
-1) &
3463 (QDIO_MAX_BUFFERS_PER_Q
-1));
3464 qdio_do_eqbs(q
, &state
, &start_buf
, &cnt
);
3466 state
= q
->slsb
.acc
.val
[(qidx
+QDIO_MAX_BUFFERS_PER_Q
-1)
3467 &(QDIO_MAX_BUFFERS_PER_Q
-1) ];
3468 if (state
!= SLSB_CU_OUTPUT_PRIMED
) {
3469 qdio_kick_outbound_q(q
);
3471 QDIO_DBF_TEXT3(0,trace
, "fast-req");
3472 qdio_perf_stat_inc(&perf_stats
.fast_reqs
);
3476 * only marking the q could take too long,
3477 * the upper layer module could do a lot of
3478 * traffic in that time
3480 __qdio_outbound_processing(q
);
3483 qdio_perf_stat_inc(&perf_stats
.outbound_cnt
);
3486 /* count must be 1 in iqdio */
3488 do_QDIO(struct ccw_device
*cdev
,unsigned int callflags
,
3489 unsigned int queue_number
, unsigned int qidx
,
3490 unsigned int count
,struct qdio_buffer
*buffers
)
3492 struct qdio_irq
*irq_ptr
;
3493 #ifdef CONFIG_QDIO_DEBUG
3496 sprintf(dbf_text
,"doQD%04x",cdev
->private->schid
.sch_no
);
3497 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3498 #endif /* CONFIG_QDIO_DEBUG */
3500 if ( (qidx
>QDIO_MAX_BUFFERS_PER_Q
) ||
3501 (count
>QDIO_MAX_BUFFERS_PER_Q
) ||
3502 (queue_number
>QDIO_MAX_QUEUES_PER_IRQ
) )
3508 irq_ptr
= cdev
->private->qdio_data
;
3512 #ifdef CONFIG_QDIO_DEBUG
3513 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3514 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->input_qs
[queue_number
],
3517 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->output_qs
[queue_number
],
3519 sprintf(dbf_text
,"flag%04x",callflags
);
3520 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3521 sprintf(dbf_text
,"qi%02xct%02x",qidx
,count
);
3522 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3523 #endif /* CONFIG_QDIO_DEBUG */
3525 if (irq_ptr
->state
!=QDIO_IRQ_STATE_ACTIVE
)
3528 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3529 do_qdio_handle_inbound(irq_ptr
->input_qs
[queue_number
],
3530 callflags
, qidx
, count
, buffers
);
3531 else if (callflags
&QDIO_FLAG_SYNC_OUTPUT
)
3532 do_qdio_handle_outbound(irq_ptr
->output_qs
[queue_number
],
3533 callflags
, qidx
, count
, buffers
);
3535 QDIO_DBF_TEXT3(1,trace
,"doQD:inv");
3542 qdio_perf_procfile_read(char *buffer
, char **buffer_location
, off_t offset
,
3543 int buffer_length
, int *eof
, void *data
)
3547 /* we are always called with buffer_length=4k, so we all
3548 deliver on the first read */
3552 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3554 _OUTP_IT("Number of tasklet runs (total) : %li\n",
3555 (long)atomic64_read(&perf_stats
.tl_runs
));
3556 _OUTP_IT("Inbound tasklet runs tried/retried : %li/%li\n",
3557 (long)atomic64_read(&perf_stats
.inbound_tl_runs
),
3558 (long)atomic64_read(&perf_stats
.inbound_tl_runs_resched
));
3559 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %li/%li\n",
3560 (long)atomic64_read(&perf_stats
.inbound_thin_tl_runs
),
3561 (long)atomic64_read(&perf_stats
.inbound_thin_tl_runs_resched
));
3562 _OUTP_IT("Outbound tasklet runs tried/retried : %li/%li\n",
3563 (long)atomic64_read(&perf_stats
.outbound_tl_runs
),
3564 (long)atomic64_read(&perf_stats
.outbound_tl_runs_resched
));
3566 _OUTP_IT("Number of SIGA sync's issued : %li\n",
3567 (long)atomic64_read(&perf_stats
.siga_syncs
));
3568 _OUTP_IT("Number of SIGA in's issued : %li\n",
3569 (long)atomic64_read(&perf_stats
.siga_ins
));
3570 _OUTP_IT("Number of SIGA out's issued : %li\n",
3571 (long)atomic64_read(&perf_stats
.siga_outs
));
3572 _OUTP_IT("Number of PCIs caught : %li\n",
3573 (long)atomic64_read(&perf_stats
.pcis
));
3574 _OUTP_IT("Number of adapter interrupts caught : %li\n",
3575 (long)atomic64_read(&perf_stats
.thinints
));
3576 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %li\n",
3577 (long)atomic64_read(&perf_stats
.fast_reqs
));
3579 _OUTP_IT("Number of inbound transfers : %li\n",
3580 (long)atomic64_read(&perf_stats
.inbound_cnt
));
3581 _OUTP_IT("Number of do_QDIOs outbound : %li\n",
3582 (long)atomic64_read(&perf_stats
.outbound_cnt
));
3583 #else /* CONFIG_64BIT */
3584 _OUTP_IT("Number of tasklet runs (total) : %i\n",
3585 atomic_read(&perf_stats
.tl_runs
));
3586 _OUTP_IT("Inbound tasklet runs tried/retried : %i/%i\n",
3587 atomic_read(&perf_stats
.inbound_tl_runs
),
3588 atomic_read(&perf_stats
.inbound_tl_runs_resched
));
3589 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %i/%i\n",
3590 atomic_read(&perf_stats
.inbound_thin_tl_runs
),
3591 atomic_read(&perf_stats
.inbound_thin_tl_runs_resched
));
3592 _OUTP_IT("Outbound tasklet runs tried/retried : %i/%i\n",
3593 atomic_read(&perf_stats
.outbound_tl_runs
),
3594 atomic_read(&perf_stats
.outbound_tl_runs_resched
));
3596 _OUTP_IT("Number of SIGA sync's issued : %i\n",
3597 atomic_read(&perf_stats
.siga_syncs
));
3598 _OUTP_IT("Number of SIGA in's issued : %i\n",
3599 atomic_read(&perf_stats
.siga_ins
));
3600 _OUTP_IT("Number of SIGA out's issued : %i\n",
3601 atomic_read(&perf_stats
.siga_outs
));
3602 _OUTP_IT("Number of PCIs caught : %i\n",
3603 atomic_read(&perf_stats
.pcis
));
3604 _OUTP_IT("Number of adapter interrupts caught : %i\n",
3605 atomic_read(&perf_stats
.thinints
));
3606 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %i\n",
3607 atomic_read(&perf_stats
.fast_reqs
));
3609 _OUTP_IT("Number of inbound transfers : %i\n",
3610 atomic_read(&perf_stats
.inbound_cnt
));
3611 _OUTP_IT("Number of do_QDIOs outbound : %i\n",
3612 atomic_read(&perf_stats
.outbound_cnt
));
3613 #endif /* CONFIG_64BIT */
3619 static struct proc_dir_entry
*qdio_perf_proc_file
;
3622 qdio_add_procfs_entry(void)
3624 proc_perf_file_registration
=0;
3625 qdio_perf_proc_file
=create_proc_entry(QDIO_PERF
,
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
);
3638 qdio_remove_procfs_entry(void)
3640 if (!proc_perf_file_registration
) /* means if it went ok earlier */
3641 remove_proc_entry(QDIO_PERF
,NULL
);
3645 * attributes in sysfs
3646 *****************************************************************************/
3649 qdio_performance_stats_show(struct bus_type
*bus
, char *buf
)
3651 return sprintf(buf
, "%i\n", qdio_performance_stats
? 1 : 0);
3655 qdio_performance_stats_store(struct bus_type
*bus
, const char *buf
, size_t count
)
3660 ret
= strict_strtoul(buf
, 16, &i
);
3661 if (!ret
&& ((i
== 0) || (i
== 1))) {
3662 if (i
== qdio_performance_stats
)
3664 qdio_performance_stats
= i
;
3666 /* reset perf. stat. info */
3668 atomic64_set(&perf_stats
.tl_runs
, 0);
3669 atomic64_set(&perf_stats
.outbound_tl_runs
, 0);
3670 atomic64_set(&perf_stats
.inbound_tl_runs
, 0);
3671 atomic64_set(&perf_stats
.inbound_tl_runs_resched
, 0);
3672 atomic64_set(&perf_stats
.inbound_thin_tl_runs
, 0);
3673 atomic64_set(&perf_stats
.inbound_thin_tl_runs_resched
,
3675 atomic64_set(&perf_stats
.siga_outs
, 0);
3676 atomic64_set(&perf_stats
.siga_ins
, 0);
3677 atomic64_set(&perf_stats
.siga_syncs
, 0);
3678 atomic64_set(&perf_stats
.pcis
, 0);
3679 atomic64_set(&perf_stats
.thinints
, 0);
3680 atomic64_set(&perf_stats
.fast_reqs
, 0);
3681 atomic64_set(&perf_stats
.outbound_cnt
, 0);
3682 atomic64_set(&perf_stats
.inbound_cnt
, 0);
3683 #else /* CONFIG_64BIT */
3684 atomic_set(&perf_stats
.tl_runs
, 0);
3685 atomic_set(&perf_stats
.outbound_tl_runs
, 0);
3686 atomic_set(&perf_stats
.inbound_tl_runs
, 0);
3687 atomic_set(&perf_stats
.inbound_tl_runs_resched
, 0);
3688 atomic_set(&perf_stats
.inbound_thin_tl_runs
, 0);
3689 atomic_set(&perf_stats
.inbound_thin_tl_runs_resched
, 0);
3690 atomic_set(&perf_stats
.siga_outs
, 0);
3691 atomic_set(&perf_stats
.siga_ins
, 0);
3692 atomic_set(&perf_stats
.siga_syncs
, 0);
3693 atomic_set(&perf_stats
.pcis
, 0);
3694 atomic_set(&perf_stats
.thinints
, 0);
3695 atomic_set(&perf_stats
.fast_reqs
, 0);
3696 atomic_set(&perf_stats
.outbound_cnt
, 0);
3697 atomic_set(&perf_stats
.inbound_cnt
, 0);
3698 #endif /* CONFIG_64BIT */
3701 QDIO_PRINT_ERR("QDIO performance_stats: write 0 or 1 to this file!\n");
3707 static BUS_ATTR(qdio_performance_stats
, 0644, qdio_performance_stats_show
,
3708 qdio_performance_stats_store
);
3711 tiqdio_register_thinints(void)
3716 s390_register_adapter_interrupt(&tiqdio_thinint_handler
, NULL
,
3717 TIQDIO_THININT_ISC
);
3718 if (IS_ERR(tiqdio_ind
)) {
3719 sprintf(dbf_text
, "regthn%lx", PTR_ERR(tiqdio_ind
));
3720 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3721 QDIO_PRINT_ERR("failed to register adapter handler " \
3722 "(rc=%li).\nAdapter interrupts might " \
3723 "not work. Continuing.\n",
3724 PTR_ERR(tiqdio_ind
));
3730 tiqdio_unregister_thinints(void)
3733 s390_unregister_adapter_interrupt(tiqdio_ind
,
3734 TIQDIO_THININT_ISC
);
3738 qdio_get_qdio_memory(void)
3741 indicator_used
[0]=1;
3743 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
3744 indicator_used
[i
]=0;
3745 indicators
= kzalloc(sizeof(__u32
)*(INDICATORS_PER_CACHELINE
),
3753 qdio_release_qdio_memory(void)
3759 qdio_unregister_dbf_views(void)
3762 debug_unregister(qdio_dbf_setup
);
3764 debug_unregister(qdio_dbf_sbal
);
3766 debug_unregister(qdio_dbf_sense
);
3768 debug_unregister(qdio_dbf_trace
);
3769 #ifdef CONFIG_QDIO_DEBUG
3770 if (qdio_dbf_slsb_out
)
3771 debug_unregister(qdio_dbf_slsb_out
);
3772 if (qdio_dbf_slsb_in
)
3773 debug_unregister(qdio_dbf_slsb_in
);
3774 #endif /* CONFIG_QDIO_DEBUG */
3778 qdio_register_dbf_views(void)
3780 qdio_dbf_setup
=debug_register(QDIO_DBF_SETUP_NAME
,
3781 QDIO_DBF_SETUP_PAGES
,
3782 QDIO_DBF_SETUP_NR_AREAS
,
3783 QDIO_DBF_SETUP_LEN
);
3784 if (!qdio_dbf_setup
)
3786 debug_register_view(qdio_dbf_setup
,&debug_hex_ascii_view
);
3787 debug_set_level(qdio_dbf_setup
,QDIO_DBF_SETUP_LEVEL
);
3789 qdio_dbf_sbal
=debug_register(QDIO_DBF_SBAL_NAME
,
3790 QDIO_DBF_SBAL_PAGES
,
3791 QDIO_DBF_SBAL_NR_AREAS
,
3796 debug_register_view(qdio_dbf_sbal
,&debug_hex_ascii_view
);
3797 debug_set_level(qdio_dbf_sbal
,QDIO_DBF_SBAL_LEVEL
);
3799 qdio_dbf_sense
=debug_register(QDIO_DBF_SENSE_NAME
,
3800 QDIO_DBF_SENSE_PAGES
,
3801 QDIO_DBF_SENSE_NR_AREAS
,
3802 QDIO_DBF_SENSE_LEN
);
3803 if (!qdio_dbf_sense
)
3806 debug_register_view(qdio_dbf_sense
,&debug_hex_ascii_view
);
3807 debug_set_level(qdio_dbf_sense
,QDIO_DBF_SENSE_LEVEL
);
3809 qdio_dbf_trace
=debug_register(QDIO_DBF_TRACE_NAME
,
3810 QDIO_DBF_TRACE_PAGES
,
3811 QDIO_DBF_TRACE_NR_AREAS
,
3812 QDIO_DBF_TRACE_LEN
);
3813 if (!qdio_dbf_trace
)
3816 debug_register_view(qdio_dbf_trace
,&debug_hex_ascii_view
);
3817 debug_set_level(qdio_dbf_trace
,QDIO_DBF_TRACE_LEVEL
);
3819 #ifdef CONFIG_QDIO_DEBUG
3820 qdio_dbf_slsb_out
=debug_register(QDIO_DBF_SLSB_OUT_NAME
,
3821 QDIO_DBF_SLSB_OUT_PAGES
,
3822 QDIO_DBF_SLSB_OUT_NR_AREAS
,
3823 QDIO_DBF_SLSB_OUT_LEN
);
3824 if (!qdio_dbf_slsb_out
)
3826 debug_register_view(qdio_dbf_slsb_out
,&debug_hex_ascii_view
);
3827 debug_set_level(qdio_dbf_slsb_out
,QDIO_DBF_SLSB_OUT_LEVEL
);
3829 qdio_dbf_slsb_in
=debug_register(QDIO_DBF_SLSB_IN_NAME
,
3830 QDIO_DBF_SLSB_IN_PAGES
,
3831 QDIO_DBF_SLSB_IN_NR_AREAS
,
3832 QDIO_DBF_SLSB_IN_LEN
);
3833 if (!qdio_dbf_slsb_in
)
3835 debug_register_view(qdio_dbf_slsb_in
,&debug_hex_ascii_view
);
3836 debug_set_level(qdio_dbf_slsb_in
,QDIO_DBF_SLSB_IN_LEVEL
);
3837 #endif /* CONFIG_QDIO_DEBUG */
3840 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3841 qdio_unregister_dbf_views();
3845 static void *qdio_mempool_alloc(gfp_t gfp_mask
, void *size
)
3847 return (void *) get_zeroed_page(gfp_mask
|GFP_DMA
);
3850 static void qdio_mempool_free(void *element
, void *size
)
3852 free_page((unsigned long) element
);
3861 printk("qdio: loading %s\n",version
);
3863 res
=qdio_get_qdio_memory();
3867 qdio_q_cache
= kmem_cache_create("qdio_q", sizeof(struct qdio_q
),
3869 if (!qdio_q_cache
) {
3870 qdio_release_qdio_memory();
3874 res
= qdio_register_dbf_views();
3876 kmem_cache_destroy(qdio_q_cache
);
3877 qdio_release_qdio_memory();
3881 QDIO_DBF_TEXT0(0,setup
,"initQDIO");
3882 res
= bus_create_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3884 memset((void*)&perf_stats
,0,sizeof(perf_stats
));
3885 QDIO_DBF_TEXT0(0,setup
,"perfstat");
3887 QDIO_DBF_HEX0(0,setup
,&ptr
,sizeof(void*));
3889 qdio_add_procfs_entry();
3891 qdio_mempool_scssc
= mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS
,
3893 qdio_mempool_free
, NULL
);
3895 if (tiqdio_check_chsc_availability())
3896 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3898 tiqdio_register_thinints();
3906 tiqdio_unregister_thinints();
3907 qdio_remove_procfs_entry();
3908 qdio_release_qdio_memory();
3909 qdio_unregister_dbf_views();
3910 mempool_destroy(qdio_mempool_scssc
);
3911 kmem_cache_destroy(qdio_q_cache
);
3912 bus_remove_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3913 printk("qdio: %s: module removed\n",version
);
3916 module_init(init_QDIO
);
3917 module_exit(cleanup_QDIO
);
3919 EXPORT_SYMBOL(qdio_allocate
);
3920 EXPORT_SYMBOL(qdio_establish
);
3921 EXPORT_SYMBOL(qdio_initialize
);
3922 EXPORT_SYMBOL(qdio_activate
);
3923 EXPORT_SYMBOL(do_QDIO
);
3924 EXPORT_SYMBOL(qdio_shutdown
);
3925 EXPORT_SYMBOL(qdio_free
);
3926 EXPORT_SYMBOL(qdio_cleanup
);
3927 EXPORT_SYMBOL(qdio_synchronize
);