3 * linux/drivers/s390/cio/qdio.c
5 * Linux for S/390 QDIO base support, Hipersocket base support
8 * Copyright 2000,2002 IBM Corporation
9 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
10 * 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
12 * Restriction: only 63 iqdio subchannels would have its own indicator,
13 * after that, subsequent subchannels share one indicator
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2, or (at your option)
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 #include <linux/module.h>
34 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/kernel.h>
38 #include <linux/proc_fs.h>
39 #include <linux/timer.h>
40 #include <linux/mempool.h>
42 #include <asm/ccwdev.h>
44 #include <asm/atomic.h>
45 #include <asm/semaphore.h>
46 #include <asm/timex.h>
48 #include <asm/debug.h>
49 #include <asm/s390_rdev.h>
60 /****************** MODULE PARAMETER VARIABLES ********************/
61 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
62 MODULE_DESCRIPTION("QDIO base support version 2, " \
63 "Copyright 2000 IBM Corporation");
64 MODULE_LICENSE("GPL");
66 /******************** HERE WE GO ***********************************/
68 static const char version
[] = "QDIO base support version 2";
70 static int qdio_performance_stats
= 0;
71 static int proc_perf_file_registration
;
72 static struct qdio_perf_stats perf_stats
;
74 static int hydra_thinints
;
75 static int is_passthrough
= 0;
78 static int indicator_used
[INDICATORS_PER_CACHELINE
];
79 static __u32
* volatile indicators
;
80 static __u32
volatile spare_indicator
;
81 static atomic_t spare_indicator_usecount
;
82 #define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
83 static mempool_t
*qdio_mempool_scssc
;
84 static struct kmem_cache
*qdio_q_cache
;
86 static debug_info_t
*qdio_dbf_setup
;
87 static debug_info_t
*qdio_dbf_sbal
;
88 static debug_info_t
*qdio_dbf_trace
;
89 static debug_info_t
*qdio_dbf_sense
;
90 #ifdef CONFIG_QDIO_DEBUG
91 static debug_info_t
*qdio_dbf_slsb_out
;
92 static debug_info_t
*qdio_dbf_slsb_in
;
93 #endif /* CONFIG_QDIO_DEBUG */
96 static volatile struct qdio_q
*tiq_list
=NULL
; /* volatile as it could change
97 during a while loop */
98 static DEFINE_SPINLOCK(ttiq_list_lock
);
99 static int register_thinint_result
;
100 static void tiqdio_tl(unsigned long);
101 static DECLARE_TASKLET(tiqdio_tasklet
,tiqdio_tl
,0);
103 /* not a macro, as one of the arguments is atomic_read */
105 qdio_min(int a
,int b
)
113 /***************** SCRUBBER HELPER ROUTINES **********************/
115 static inline void qdio_perf_stat_inc(atomic64_t
*count
)
117 if (qdio_performance_stats
)
121 static inline void qdio_perf_stat_dec(atomic64_t
*count
)
123 if (qdio_performance_stats
)
126 #else /* CONFIG_64BIT */
127 static inline void qdio_perf_stat_inc(atomic_t
*count
)
129 if (qdio_performance_stats
)
133 static inline void qdio_perf_stat_dec(atomic_t
*count
)
135 if (qdio_performance_stats
)
138 #endif /* CONFIG_64BIT */
141 qdio_get_micros(void)
143 return (get_clock() >> 12); /* time>>12 is microseconds */
147 * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
148 * the q in any case, so that we'll not be interrupted when we are in
149 * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
150 * ever works (last famous words)
153 qdio_reserve_q(struct qdio_q
*q
)
155 return atomic_add_return(1,&q
->use_count
) - 1;
159 qdio_release_q(struct qdio_q
*q
)
161 atomic_dec(&q
->use_count
);
166 qdio_check_ccq(struct qdio_q
*q
, unsigned int ccq
)
170 if (ccq
== 0 || ccq
== 32)
172 if (ccq
== 96 || ccq
== 97)
174 /*notify devices immediately*/
175 sprintf(dbf_text
,"%d", ccq
);
176 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
179 /* EQBS: extract buffer states */
181 qdio_do_eqbs(struct qdio_q
*q
, unsigned char *state
,
182 unsigned int *start
, unsigned int *cnt
)
184 struct qdio_irq
*irq
;
185 unsigned int tmp_cnt
, q_no
, ccq
;
191 irq
= (struct qdio_irq
*)q
->irq_ptr
;
194 q_no
+= irq
->no_input_qs
;
196 ccq
= do_eqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
197 rc
= qdio_check_ccq(q
, ccq
);
198 if ((ccq
== 96) && (tmp_cnt
!= *cnt
))
201 QDIO_DBF_TEXT5(1,trace
,"eqAGAIN");
205 QDIO_DBF_TEXT2(1,trace
,"eqberr");
206 sprintf(dbf_text
,"%2x,%2x,%d,%d",tmp_cnt
, *cnt
, ccq
, q_no
);
207 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
208 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
209 QDIO_STATUS_LOOK_FOR_ERROR
,
210 0, 0, 0, -1, -1, q
->int_parm
);
213 return (tmp_cnt
- *cnt
);
216 /* SQBS: set buffer states */
218 qdio_do_sqbs(struct qdio_q
*q
, unsigned char state
,
219 unsigned int *start
, unsigned int *cnt
)
221 struct qdio_irq
*irq
;
222 unsigned int tmp_cnt
, q_no
, ccq
;
228 irq
= (struct qdio_irq
*)q
->irq_ptr
;
231 q_no
+= irq
->no_input_qs
;
233 ccq
= do_sqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
234 rc
= qdio_check_ccq(q
, ccq
);
236 QDIO_DBF_TEXT5(1,trace
,"sqAGAIN");
240 QDIO_DBF_TEXT3(1,trace
,"sqberr");
241 sprintf(dbf_text
,"%2x,%2x",tmp_cnt
,*cnt
);
242 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
243 sprintf(dbf_text
,"%d,%d",ccq
,q_no
);
244 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
245 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
246 QDIO_STATUS_LOOK_FOR_ERROR
,
247 0, 0, 0, -1, -1, q
->int_parm
);
250 return (tmp_cnt
- *cnt
);
254 qdio_set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
255 unsigned char state
, unsigned int *count
)
258 struct qdio_irq
*irq
;
260 irq
= (struct qdio_irq
*)q
->irq_ptr
;
261 if (!irq
->is_qebsm
) {
262 slsb
= (char *)&q
->slsb
.acc
.val
[(*bufno
)];
266 return qdio_do_sqbs(q
, state
, bufno
, count
);
269 #ifdef CONFIG_QDIO_DEBUG
271 qdio_trace_slsb(struct qdio_q
*q
)
273 if (q
->queue_type
==QDIO_TRACE_QTYPE
) {
275 QDIO_DBF_HEX2(0,slsb_in
,&q
->slsb
,
276 QDIO_MAX_BUFFERS_PER_Q
);
278 QDIO_DBF_HEX2(0,slsb_out
,&q
->slsb
,
279 QDIO_MAX_BUFFERS_PER_Q
);
285 set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
286 unsigned char state
, unsigned int *count
)
289 #ifdef CONFIG_QDIO_DEBUG
292 rc
= qdio_set_slsb(q
, bufno
, state
, count
);
293 #ifdef CONFIG_QDIO_DEBUG
299 qdio_siga_sync(struct qdio_q
*q
, unsigned int gpr2
,
304 QDIO_DBF_TEXT4(0,trace
,"sigasync");
305 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
307 qdio_perf_stat_inc(&perf_stats
.siga_syncs
);
309 cc
= do_siga_sync(q
->schid
, gpr2
, gpr3
);
311 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
317 qdio_siga_sync_q(struct qdio_q
*q
)
320 return qdio_siga_sync(q
, 0, q
->mask
);
321 return qdio_siga_sync(q
, q
->mask
, 0);
325 __do_siga_output(struct qdio_q
*q
, unsigned int *busy_bit
)
327 struct qdio_irq
*irq
;
331 irq
= (struct qdio_irq
*) q
->irq_ptr
;
333 schid
= *((u32
*)&q
->schid
);
335 schid
= irq
->sch_token
;
338 return do_siga_output(schid
, q
->mask
, busy_bit
, fc
);
342 * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
343 * an access exception
346 qdio_siga_output(struct qdio_q
*q
)
352 qdio_perf_stat_inc(&perf_stats
.siga_outs
);
354 QDIO_DBF_TEXT4(0,trace
,"sigaout");
355 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
358 cc
= __do_siga_output(q
, &busy_bit
);
359 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
360 if ((cc
==2) && (busy_bit
) && (q
->is_iqdio_q
)) {
363 if ((NOW
-start_time
)>QDIO_BUSY_BIT_PATIENCE
)
369 if ((cc
==2) && (busy_bit
))
370 cc
|= QDIO_SIGA_ERROR_B_BIT_SET
;
373 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
379 qdio_siga_input(struct qdio_q
*q
)
383 QDIO_DBF_TEXT4(0,trace
,"sigain");
384 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
386 qdio_perf_stat_inc(&perf_stats
.siga_ins
);
388 cc
= do_siga_input(q
->schid
, q
->mask
);
391 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
396 /* locked by the locks in qdio_activate and qdio_cleanup */
398 qdio_get_indicator(void)
402 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
403 if (!indicator_used
[i
]) {
407 atomic_inc(&spare_indicator_usecount
);
408 return (__u32
* volatile) &spare_indicator
;
411 /* locked by the locks in qdio_activate and qdio_cleanup */
413 qdio_put_indicator(__u32
*addr
)
417 if ( (addr
) && (addr
!=&spare_indicator
) ) {
421 if (addr
== &spare_indicator
)
422 atomic_dec(&spare_indicator_usecount
);
426 tiqdio_clear_summary_bit(__u32
*location
)
428 QDIO_DBF_TEXT5(0,trace
,"clrsummb");
429 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
435 tiqdio_set_summary_bit(__u32
*location
)
437 QDIO_DBF_TEXT5(0,trace
,"setsummb");
438 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
444 tiqdio_sched_tl(void)
446 tasklet_hi_schedule(&tiqdio_tasklet
);
450 qdio_mark_tiq(struct qdio_q
*q
)
454 QDIO_DBF_TEXT4(0,trace
,"mark iq");
455 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
457 spin_lock_irqsave(&ttiq_list_lock
,flags
);
458 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
464 if ((q
->list_prev
) || (q
->list_next
))
472 q
->list_next
=tiq_list
;
473 q
->list_prev
=tiq_list
->list_prev
;
474 tiq_list
->list_prev
->list_next
=q
;
475 tiq_list
->list_prev
=q
;
477 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
479 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
483 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
488 qdio_mark_q(struct qdio_q
*q
)
490 QDIO_DBF_TEXT4(0,trace
,"mark q");
491 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
493 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
496 tasklet_schedule(&q
->tasklet
);
500 qdio_stop_polling(struct qdio_q
*q
)
502 #ifdef QDIO_USE_PROCESSING_STATE
503 unsigned int tmp
, gsf
, count
= 1;
504 unsigned char state
= 0;
505 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
507 if (!atomic_xchg(&q
->polling
,0))
510 QDIO_DBF_TEXT4(0,trace
,"stoppoll");
511 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
513 /* show the card that we are not polling anymore */
517 tmp
= gsf
= GET_SAVED_FRONTIER(q
);
518 tmp
= ((tmp
+ QDIO_MAX_BUFFERS_PER_Q
-1) & (QDIO_MAX_BUFFERS_PER_Q
-1) );
519 set_slsb(q
, &tmp
, SLSB_P_INPUT_NOT_INIT
, &count
);
522 * we don't issue this SYNC_MEMORY, as we trust Rick T and
523 * moreover will not use the PROCESSING state under VM, so
524 * q->polling was 0 anyway
529 qdio_do_eqbs(q
, &state
, &gsf
, &count
);
531 state
= q
->slsb
.acc
.val
[gsf
];
532 if (state
!= SLSB_P_INPUT_PRIMED
)
535 * set our summary bit again, as otherwise there is a
536 * small window we can miss between resetting it and
537 * checking for PRIMED state
540 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
543 #else /* QDIO_USE_PROCESSING_STATE */
545 #endif /* QDIO_USE_PROCESSING_STATE */
549 * see the comment in do_QDIO and before qdio_reserve_q about the
550 * sophisticated locking outside of unmark_q, so that we don't need to
551 * disable the interrupts :-)
554 qdio_unmark_q(struct qdio_q
*q
)
558 QDIO_DBF_TEXT4(0,trace
,"unmark q");
559 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
561 if ((!q
->list_prev
)||(!q
->list_next
))
564 if ((q
->is_thinint_q
)&&(q
->is_input_q
)) {
566 spin_lock_irqsave(&ttiq_list_lock
,flags
);
567 /* in case cleanup has done this already and simultanously
568 * qdio_unmark_q is called from the interrupt handler, we've
569 * got to check this in this specific case again */
570 if ((!q
->list_prev
)||(!q
->list_next
))
572 if (q
->list_next
==q
) {
573 /* q was the only interesting q */
578 q
->list_next
->list_prev
=q
->list_prev
;
579 q
->list_prev
->list_next
=q
->list_next
;
580 tiq_list
=q
->list_next
;
585 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
589 static inline unsigned long
590 tiqdio_clear_global_summary(void)
594 QDIO_DBF_TEXT5(0,trace
,"clrglobl");
596 time
= do_clear_global_summary();
598 QDIO_DBF_HEX5(0,trace
,&time
,sizeof(unsigned long));
604 /************************* OUTBOUND ROUTINES *******************************/
606 qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q
*q
)
608 struct qdio_irq
*irq
;
610 unsigned int cnt
, count
, ftc
;
612 irq
= (struct qdio_irq
*) q
->irq_ptr
;
613 if ((!q
->is_iqdio_q
) && (!q
->hydra_gives_outbound_pcis
))
616 ftc
= q
->first_to_check
;
617 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
618 (QDIO_MAX_BUFFERS_PER_Q
-1));
620 return q
->first_to_check
;
621 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
623 return q
->first_to_check
;
625 case SLSB_P_OUTPUT_ERROR
:
626 QDIO_DBF_TEXT3(0,trace
,"outperr");
627 atomic_sub(cnt
, &q
->number_of_buffers_used
);
629 q
->error_status_flags
|=
630 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
631 q
->qdio_error
= SLSB_P_OUTPUT_ERROR
;
632 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
633 q
->first_to_check
= ftc
;
635 case SLSB_P_OUTPUT_EMPTY
:
636 QDIO_DBF_TEXT5(0,trace
,"outpempt");
637 atomic_sub(cnt
, &q
->number_of_buffers_used
);
638 q
->first_to_check
= ftc
;
640 case SLSB_CU_OUTPUT_PRIMED
:
641 /* all buffers primed */
642 QDIO_DBF_TEXT5(0,trace
,"outpprim");
647 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
648 return q
->first_to_check
;
652 qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q
*q
)
654 struct qdio_irq
*irq
;
656 int tmp
, ftc
, count
, cnt
;
660 irq
= (struct qdio_irq
*) q
->irq_ptr
;
661 ftc
= q
->first_to_check
;
662 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
663 (QDIO_MAX_BUFFERS_PER_Q
-1));
665 return q
->first_to_check
;
666 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
668 return q
->first_to_check
;
670 case SLSB_P_INPUT_ERROR
:
671 #ifdef CONFIG_QDIO_DEBUG
672 QDIO_DBF_TEXT3(1,trace
,"inperr");
673 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
674 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
675 #endif /* CONFIG_QDIO_DEBUG */
677 q
->error_status_flags
|=
678 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
679 q
->qdio_error
= SLSB_P_INPUT_ERROR
;
680 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
681 atomic_sub(cnt
, &q
->number_of_buffers_used
);
682 q
->first_to_check
= ftc
;
684 case SLSB_P_INPUT_PRIMED
:
685 QDIO_DBF_TEXT3(0,trace
,"inptprim");
686 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
687 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
689 ftc
= q
->first_to_check
;
690 #ifdef QDIO_USE_PROCESSING_STATE
693 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
698 tmp
+= set_slsb(q
, &ftc
,
699 SLSB_P_INPUT_PROCESSING
, &cnt
);
700 atomic_set(&q
->polling
, 1);
702 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
704 atomic_sub(tmp
, &q
->number_of_buffers_used
);
705 q
->first_to_check
= ftc
;
707 case SLSB_CU_INPUT_EMPTY
:
708 case SLSB_P_INPUT_NOT_INIT
:
709 case SLSB_P_INPUT_PROCESSING
:
710 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
715 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
716 return q
->first_to_check
;
720 qdio_get_outbound_buffer_frontier(struct qdio_q
*q
)
722 struct qdio_irq
*irq
;
724 unsigned int count
= 1;
725 int first_not_to_check
, f
, f_mod_no
;
728 QDIO_DBF_TEXT4(0,trace
,"getobfro");
729 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
731 irq
= (struct qdio_irq
*) q
->irq_ptr
;
733 return qdio_qebsm_get_outbound_buffer_frontier(q
);
735 slsb
=&q
->slsb
.acc
.val
[0];
736 f_mod_no
=f
=q
->first_to_check
;
738 * f points to already processed elements, so f+no_used is correct...
739 * ... but: we don't check 128 buffers, as otherwise
740 * qdio_has_outbound_q_moved would return 0
742 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
743 (QDIO_MAX_BUFFERS_PER_Q
-1));
745 if (((!q
->is_iqdio_q
) && (!q
->hydra_gives_outbound_pcis
)) ||
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(struct qdio_q
*q
)
1029 __qdio_outbound_processing(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 (!q
->siga_sync
&& !irq
->is_qebsm
)
1219 /* we'll check for more primed buffers in qeth_stop_polling */
1221 if (irq
->is_qebsm
) {
1223 start_buf
= q
->first_to_check
;
1224 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1226 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1227 if (state
!= SLSB_P_INPUT_PRIMED
)
1229 * nothing more to do, if next buffer is not PRIMED.
1230 * note that we did a SYNC_MEMORY before, that there
1231 * has been a sychnronization.
1232 * we will return 0 below, as there is nothing to do
1233 * (stop_polling not necessary, as we have not been
1234 * using the PROCESSING state
1239 * ok, the next input buffer is primed. that means, that device state
1240 * change indicator and adapter local summary are set, so we will find
1242 * we will return 0 below, as there is nothing to do, except scheduling
1243 * ourselves for the next time.
1245 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1251 qdio_is_inbound_q_done(struct qdio_q
*q
)
1254 unsigned int start_buf
, count
;
1255 unsigned char state
= 0;
1256 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1258 #ifdef CONFIG_QDIO_DEBUG
1262 no_used
=atomic_read(&q
->number_of_buffers_used
);
1265 * we need that one for synchronization with the adapter, as it
1266 * does a kind of PCI avoidance
1271 QDIO_DBF_TEXT4(0,trace
,"inqisdnA");
1272 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1275 if (irq
->is_qebsm
) {
1277 start_buf
= q
->first_to_check
;
1278 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1280 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1281 if (state
== SLSB_P_INPUT_PRIMED
) {
1282 /* we got something to do */
1283 QDIO_DBF_TEXT4(0,trace
,"inqisntA");
1284 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1288 /* on VM, we don't poll, so the q is always done here */
1291 if (q
->hydra_gives_outbound_pcis
)
1295 * at this point we know, that inbound first_to_check
1296 * has (probably) not moved (see qdio_inbound_processing)
1298 if (NOW
>GET_SAVED_TIMESTAMP(q
)+q
->timing
.threshold
) {
1299 #ifdef CONFIG_QDIO_DEBUG
1300 QDIO_DBF_TEXT4(0,trace
,"inqisdon");
1301 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1302 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1303 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1304 #endif /* CONFIG_QDIO_DEBUG */
1307 #ifdef CONFIG_QDIO_DEBUG
1308 QDIO_DBF_TEXT4(0,trace
,"inqisntd");
1309 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1310 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1311 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1312 #endif /* CONFIG_QDIO_DEBUG */
1318 qdio_kick_inbound_handler(struct qdio_q
*q
)
1320 int count
, start
, end
, real_end
, i
;
1321 #ifdef CONFIG_QDIO_DEBUG
1325 QDIO_DBF_TEXT4(0,trace
,"kickinh");
1326 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1328 start
=q
->first_element_to_kick
;
1329 real_end
=q
->first_to_check
;
1330 end
=(real_end
+QDIO_MAX_BUFFERS_PER_Q
-1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1338 i
=(i
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1341 #ifdef CONFIG_QDIO_DEBUG
1342 sprintf(dbf_text
,"s=%2xc=%2x",start
,count
);
1343 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1344 #endif /* CONFIG_QDIO_DEBUG */
1346 if (likely(q
->state
==QDIO_IRQ_STATE_ACTIVE
))
1348 QDIO_STATUS_INBOUND_INT
|q
->error_status_flags
,
1349 q
->qdio_error
,q
->siga_error
,q
->q_no
,start
,count
,
1352 /* for the next time: */
1353 q
->first_element_to_kick
=real_end
;
1356 q
->error_status_flags
=0;
1358 qdio_perf_stat_inc(&perf_stats
.inbound_cnt
);
1362 __tiqdio_inbound_processing(struct qdio_q
*q
, int spare_ind_was_set
)
1364 struct qdio_irq
*irq_ptr
;
1368 QDIO_DBF_TEXT4(0,trace
,"iqinproc");
1369 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1372 * we first want to reserve the q, so that we know, that we don't
1373 * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1376 if (unlikely(qdio_reserve_q(q
))) {
1378 qdio_perf_stat_inc(&perf_stats
.inbound_thin_tl_runs_resched
);
1380 * as we might just be about to stop polling, we make
1381 * sure that we check again at least once more
1386 qdio_perf_stat_inc(&perf_stats
.inbound_thin_tl_runs
);
1387 if (unlikely(atomic_read(&q
->is_in_shutdown
))) {
1393 * we reset spare_ind_was_set, when the queue does not use the
1396 if (spare_ind_was_set
)
1397 spare_ind_was_set
= (q
->dev_st_chg_ind
== &spare_indicator
);
1399 if (!(*(q
->dev_st_chg_ind
)) && !spare_ind_was_set
)
1402 * q->dev_st_chg_ind is the indicator, be it shared or not.
1403 * only clear it, if indicator is non-shared
1405 if (!spare_ind_was_set
)
1406 tiqdio_clear_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1408 if (q
->hydra_gives_outbound_pcis
) {
1409 if (!q
->siga_sync_done_on_thinints
) {
1411 } else if ((!q
->siga_sync_done_on_outb_tis
)&&
1412 (q
->hydra_gives_outbound_pcis
)) {
1413 SYNC_MEMORY_ALL_OUTB
;
1419 * maybe we have to do work on our outbound queues... at least
1420 * we have to check the outbound-int-capable thinint-capable
1423 if (q
->hydra_gives_outbound_pcis
) {
1424 irq_ptr
= (struct qdio_irq
*)q
->irq_ptr
;
1425 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1426 oq
= irq_ptr
->output_qs
[i
];
1427 if (!qdio_is_outbound_q_done(oq
)) {
1428 qdio_perf_stat_dec(&perf_stats
.tl_runs
);
1429 __qdio_outbound_processing(oq
);
1434 if (!qdio_has_inbound_q_moved(q
))
1437 qdio_kick_inbound_handler(q
);
1438 if (tiqdio_is_inbound_q_done(q
))
1439 if (!qdio_stop_polling(q
)) {
1441 * we set the flags to get into the stuff next time,
1442 * see also comment in qdio_stop_polling
1444 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1452 tiqdio_inbound_processing(struct qdio_q
*q
)
1454 __tiqdio_inbound_processing(q
, atomic_read(&spare_indicator_usecount
));
1458 __qdio_inbound_processing(struct qdio_q
*q
)
1462 QDIO_DBF_TEXT4(0,trace
,"qinproc");
1463 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1465 if (unlikely(qdio_reserve_q(q
))) {
1467 qdio_perf_stat_inc(&perf_stats
.inbound_tl_runs_resched
);
1468 /* as we're sissies, we'll check next time */
1469 if (likely(!atomic_read(&q
->is_in_shutdown
))) {
1471 QDIO_DBF_TEXT4(0,trace
,"busy,agn");
1475 qdio_perf_stat_inc(&perf_stats
.inbound_tl_runs
);
1476 qdio_perf_stat_inc(&perf_stats
.tl_runs
);
1479 if (qdio_has_inbound_q_moved(q
)) {
1480 qdio_kick_inbound_handler(q
);
1481 if (!qdio_stop_polling(q
)) {
1483 if (q_laps
<QDIO_Q_LAPS
)
1488 if (!qdio_is_inbound_q_done(q
))
1489 /* means poll time is not yet over */
1497 qdio_inbound_processing(struct qdio_q
*q
)
1499 __qdio_inbound_processing(q
);
1502 /************************* MAIN ROUTINES *******************************/
1504 #ifdef QDIO_USE_PROCESSING_STATE
1506 tiqdio_reset_processing_state(struct qdio_q
*q
, int q_laps
)
1514 * under VM, we have not used the PROCESSING state, so no
1515 * need to stop polling
1520 if (unlikely(qdio_reserve_q(q
))) {
1522 qdio_perf_stat_inc(&perf_stats
.inbound_thin_tl_runs_resched
);
1524 * as we might just be about to stop polling, we make
1525 * sure that we check again at least once more
1529 * sanity -- we'd get here without setting the
1532 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1536 if (qdio_stop_polling(q
)) {
1540 if (q_laps
<QDIO_Q_LAPS
-1) {
1545 * we set the flags to get into the stuff
1546 * next time, see also comment in qdio_stop_polling
1548 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1554 #endif /* QDIO_USE_PROCESSING_STATE */
1557 tiqdio_inbound_checks(void)
1560 int spare_ind_was_set
=0;
1561 #ifdef QDIO_USE_PROCESSING_STATE
1563 #endif /* QDIO_USE_PROCESSING_STATE */
1565 QDIO_DBF_TEXT4(0,trace
,"iqdinbck");
1566 QDIO_DBF_TEXT5(0,trace
,"iqlocsum");
1568 #ifdef QDIO_USE_PROCESSING_STATE
1570 #endif /* QDIO_USE_PROCESSING_STATE */
1572 /* when the spare indicator is used and set, save that and clear it */
1573 if ((atomic_read(&spare_indicator_usecount
)) && spare_indicator
) {
1574 spare_ind_was_set
= 1;
1575 tiqdio_clear_summary_bit((__u32
*)&spare_indicator
);
1578 q
=(struct qdio_q
*)tiq_list
;
1582 __tiqdio_inbound_processing(q
, spare_ind_was_set
);
1583 q
=(struct qdio_q
*)q
->list_next
;
1584 } while (q
!=(struct qdio_q
*)tiq_list
);
1586 #ifdef QDIO_USE_PROCESSING_STATE
1587 q
=(struct qdio_q
*)tiq_list
;
1591 ret
= tiqdio_reset_processing_state(q
, q_laps
);
1598 q
= (struct qdio_q
*)q
->list_next
;
1604 } while (q
!=(struct qdio_q
*)tiq_list
);
1605 #endif /* QDIO_USE_PROCESSING_STATE */
1609 tiqdio_tl(unsigned long data
)
1611 QDIO_DBF_TEXT4(0,trace
,"iqdio_tl");
1613 qdio_perf_stat_inc(&perf_stats
.tl_runs
);
1615 tiqdio_inbound_checks();
1618 /********************* GENERAL HELPER_ROUTINES ***********************/
1621 qdio_release_irq_memory(struct qdio_irq
*irq_ptr
)
1626 for (i
= 0; i
< QDIO_MAX_QUEUES_PER_IRQ
; i
++) {
1627 q
= irq_ptr
->input_qs
[i
];
1629 free_page((unsigned long) q
->slib
);
1630 kmem_cache_free(qdio_q_cache
, q
);
1632 q
= irq_ptr
->output_qs
[i
];
1634 free_page((unsigned long) q
->slib
);
1635 kmem_cache_free(qdio_q_cache
, q
);
1638 free_page((unsigned long) irq_ptr
->qdr
);
1639 free_page((unsigned long) irq_ptr
);
1643 qdio_set_impl_params(struct qdio_irq
*irq_ptr
,
1644 unsigned int qib_param_field_format
,
1645 /* pointer to 128 bytes or NULL, if no param field */
1646 unsigned char *qib_param_field
,
1647 /* pointer to no_queues*128 words of data or NULL */
1648 unsigned int no_input_qs
,
1649 unsigned int no_output_qs
,
1650 unsigned long *input_slib_elements
,
1651 unsigned long *output_slib_elements
)
1658 irq_ptr
->qib
.pfmt
=qib_param_field_format
;
1659 if (qib_param_field
)
1660 memcpy(irq_ptr
->qib
.parm
,qib_param_field
,
1661 QDIO_MAX_BUFFERS_PER_Q
);
1663 if (input_slib_elements
)
1664 for (i
=0;i
<no_input_qs
;i
++) {
1665 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1666 irq_ptr
->input_qs
[i
]->slib
->slibe
[j
].parms
=
1667 input_slib_elements
[
1668 i
*QDIO_MAX_BUFFERS_PER_Q
+j
];
1670 if (output_slib_elements
)
1671 for (i
=0;i
<no_output_qs
;i
++) {
1672 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1673 irq_ptr
->output_qs
[i
]->slib
->slibe
[j
].parms
=
1674 output_slib_elements
[
1675 i
*QDIO_MAX_BUFFERS_PER_Q
+j
];
1680 qdio_alloc_qs(struct qdio_irq
*irq_ptr
,
1681 int no_input_qs
, int no_output_qs
)
1686 for (i
= 0; i
< no_input_qs
; i
++) {
1687 q
= kmem_cache_alloc(qdio_q_cache
, GFP_KERNEL
);
1690 memset(q
, 0, sizeof(*q
));
1692 q
->slib
= (struct slib
*) __get_free_page(GFP_KERNEL
);
1694 kmem_cache_free(qdio_q_cache
, q
);
1697 irq_ptr
->input_qs
[i
]=q
;
1700 for (i
= 0; i
< no_output_qs
; i
++) {
1701 q
= kmem_cache_alloc(qdio_q_cache
, GFP_KERNEL
);
1704 memset(q
, 0, sizeof(*q
));
1706 q
->slib
= (struct slib
*) __get_free_page(GFP_KERNEL
);
1708 kmem_cache_free(qdio_q_cache
, q
);
1711 irq_ptr
->output_qs
[i
]=q
;
1717 qdio_fill_qs(struct qdio_irq
*irq_ptr
, struct ccw_device
*cdev
,
1718 int no_input_qs
, int no_output_qs
,
1719 qdio_handler_t
*input_handler
,
1720 qdio_handler_t
*output_handler
,
1721 unsigned long int_parm
,int q_format
,
1722 unsigned long flags
,
1723 void **inbound_sbals_array
,
1724 void **outbound_sbals_array
)
1728 char dbf_text
[20]; /* see qdio_initialize */
1732 sprintf(dbf_text
,"qfqs%4x",cdev
->private->schid
.sch_no
);
1733 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1734 for (i
=0;i
<no_input_qs
;i
++) {
1735 q
=irq_ptr
->input_qs
[i
];
1737 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1738 sprintf(dbf_text
,"in-q%4x",i
);
1739 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1740 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1742 memset(q
->slib
,0,PAGE_SIZE
);
1743 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1747 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1748 q
->sbal
[j
]=*(inbound_sbals_array
++);
1750 q
->queue_type
=q_format
;
1751 q
->int_parm
=int_parm
;
1752 q
->schid
= irq_ptr
->schid
;
1753 q
->irq_ptr
= irq_ptr
;
1758 q
->first_to_check
=0;
1760 q
->handler
=input_handler
;
1761 q
->dev_st_chg_ind
=irq_ptr
->dev_st_chg_ind
;
1763 q
->tasklet
.data
=(unsigned long)q
;
1764 /* q->is_thinint_q isn't valid at this time, but
1765 * irq_ptr->is_thinint_irq is */
1766 q
->tasklet
.func
=(void(*)(unsigned long))
1767 ((irq_ptr
->is_thinint_irq
)?&tiqdio_inbound_processing
:
1768 &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 q
->tasklet
.data
=(unsigned long)q
;
1840 q
->tasklet
.func
=(void(*)(unsigned long))
1841 &qdio_outbound_processing
;
1842 q
->timer
.function
=(void(*)(unsigned long))
1843 &qdio_outbound_processing
;
1844 q
->timer
.data
= (long)q
;
1845 init_timer(&q
->timer
);
1847 atomic_set(&q
->busy_siga_counter
,0);
1848 q
->timing
.busy_start
=0;
1851 if (i
>0) irq_ptr
->output_qs
[i
-1]->slib
->nsliba
=
1852 (unsigned long)(q
->slib
);
1853 q
->slib
->sla
=(unsigned long)(q
->sl
);
1854 q
->slib
->slsba
=(unsigned long)(&q
->slsb
.acc
.val
[0]);
1857 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1858 q
->sl
->element
[j
].sbal
=(unsigned long)(q
->sbal
[j
]);
1860 QDIO_DBF_TEXT2(0,setup
,"sl-sb-b0");
1862 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1863 ptr
=(void*)&q
->slsb
;
1864 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1865 ptr
=(void*)q
->sbal
[0];
1866 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1869 if (!irq_ptr
->is_qebsm
) {
1870 unsigned int count
= 1;
1871 for (j
= 0; j
< QDIO_MAX_BUFFERS_PER_Q
; j
++)
1872 set_slsb(q
, &j
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
1878 qdio_fill_thresholds(struct qdio_irq
*irq_ptr
,
1879 unsigned int no_input_qs
,
1880 unsigned int no_output_qs
,
1881 unsigned int min_input_threshold
,
1882 unsigned int max_input_threshold
,
1883 unsigned int min_output_threshold
,
1884 unsigned int max_output_threshold
)
1889 for (i
=0;i
<no_input_qs
;i
++) {
1890 q
=irq_ptr
->input_qs
[i
];
1891 q
->timing
.threshold
=max_input_threshold
;
1892 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1893 q->threshold_classes[j].threshold=
1894 min_input_threshold+
1895 (max_input_threshold-min_input_threshold)/
1898 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1900 for (i
=0;i
<no_output_qs
;i
++) {
1901 q
=irq_ptr
->output_qs
[i
];
1902 q
->timing
.threshold
=max_output_threshold
;
1903 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1904 q->threshold_classes[j].threshold=
1905 min_output_threshold+
1906 (max_output_threshold-min_output_threshold)/
1909 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1914 tiqdio_thinint_handler(void)
1916 QDIO_DBF_TEXT4(0,trace
,"thin_int");
1918 qdio_perf_stat_inc(&perf_stats
.thinints
);
1920 /* SVS only when needed:
1921 * issue SVS to benefit from iqdio interrupt avoidance
1922 * (SVS clears AISOI)*/
1924 tiqdio_clear_global_summary();
1926 tiqdio_inbound_checks();
1931 qdio_set_state(struct qdio_irq
*irq_ptr
, enum qdio_irq_states state
)
1934 #ifdef CONFIG_QDIO_DEBUG
1937 QDIO_DBF_TEXT5(0,trace
,"newstate");
1938 sprintf(dbf_text
,"%4x%4x",irq_ptr
->schid
.sch_no
,state
);
1939 QDIO_DBF_TEXT5(0,trace
,dbf_text
);
1940 #endif /* CONFIG_QDIO_DEBUG */
1942 irq_ptr
->state
=state
;
1943 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
1944 irq_ptr
->input_qs
[i
]->state
=state
;
1945 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
1946 irq_ptr
->output_qs
[i
]->state
=state
;
1951 qdio_irq_check_sense(struct subchannel_id schid
, struct irb
*irb
)
1955 if (irb
->esw
.esw0
.erw
.cons
) {
1956 sprintf(dbf_text
,"sens%4x",schid
.sch_no
);
1957 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
1958 QDIO_DBF_HEX0(0,sense
,irb
,QDIO_DBF_SENSE_LEN
);
1960 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1961 QDIO_HEXDUMP16(WARN
,"irb: ",irb
);
1962 QDIO_HEXDUMP16(WARN
,"sense data: ",irb
->ecw
);
1968 qdio_handle_pci(struct qdio_irq
*irq_ptr
)
1973 qdio_perf_stat_inc(&perf_stats
.pcis
);
1974 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
1975 q
=irq_ptr
->input_qs
[i
];
1976 if (q
->is_input_q
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
)
1979 qdio_perf_stat_dec(&perf_stats
.tl_runs
);
1980 __qdio_inbound_processing(q
);
1983 if (!irq_ptr
->hydra_gives_outbound_pcis
)
1985 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1986 q
=irq_ptr
->output_qs
[i
];
1987 if (qdio_is_outbound_q_done(q
))
1989 qdio_perf_stat_dec(&perf_stats
.tl_runs
);
1990 if (!irq_ptr
->sync_done_on_outb_pcis
)
1992 __qdio_outbound_processing(q
);
1996 static void qdio_establish_handle_irq(struct ccw_device
*, int, int);
1999 qdio_handle_activate_check(struct ccw_device
*cdev
, unsigned long intparm
,
2000 int cstat
, int dstat
)
2002 struct qdio_irq
*irq_ptr
;
2006 irq_ptr
= cdev
->private->qdio_data
;
2008 QDIO_DBF_TEXT2(1, trace
, "ick2");
2009 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2010 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2011 QDIO_DBF_HEX2(0,trace
,&intparm
,sizeof(int));
2012 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2013 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2014 QDIO_PRINT_ERR("received check condition on activate " \
2015 "queues on device %s (cs=x%x, ds=x%x).\n",
2016 cdev
->dev
.bus_id
, cstat
, dstat
);
2017 if (irq_ptr
->no_input_qs
) {
2018 q
=irq_ptr
->input_qs
[0];
2019 } else if (irq_ptr
->no_output_qs
) {
2020 q
=irq_ptr
->output_qs
[0];
2022 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2024 goto omit_handler_call
;
2026 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
2027 QDIO_STATUS_LOOK_FOR_ERROR
,
2028 0,0,0,-1,-1,q
->int_parm
);
2030 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_STOPPED
);
2035 qdio_call_shutdown(struct work_struct
*work
)
2037 struct ccw_device_private
*priv
;
2038 struct ccw_device
*cdev
;
2040 priv
= container_of(work
, struct ccw_device_private
, kick_work
);
2042 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
2043 put_device(&cdev
->dev
);
2047 qdio_timeout_handler(struct ccw_device
*cdev
)
2049 struct qdio_irq
*irq_ptr
;
2052 QDIO_DBF_TEXT2(0, trace
, "qtoh");
2053 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2054 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2056 irq_ptr
= cdev
->private->qdio_data
;
2057 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2058 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2060 switch (irq_ptr
->state
) {
2061 case QDIO_IRQ_STATE_INACTIVE
:
2062 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
2063 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2064 QDIO_DBF_TEXT2(1,setup
,"eq:timeo");
2065 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2067 case QDIO_IRQ_STATE_CLEANUP
:
2068 QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
2070 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2071 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2073 case QDIO_IRQ_STATE_ESTABLISHED
:
2074 case QDIO_IRQ_STATE_ACTIVE
:
2075 /* I/O has been terminated by common I/O layer. */
2076 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2077 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2078 QDIO_DBF_TEXT2(1, trace
, "cio:term");
2079 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_STOPPED
);
2080 if (get_device(&cdev
->dev
)) {
2081 /* Can't call shutdown from interrupt context. */
2082 PREPARE_WORK(&cdev
->private->kick_work
,
2083 qdio_call_shutdown
);
2084 queue_work(ccw_device_work
, &cdev
->private->kick_work
);
2090 ccw_device_set_timeout(cdev
, 0);
2091 wake_up(&cdev
->private->wait_q
);
2095 qdio_handler(struct ccw_device
*cdev
, unsigned long intparm
, struct irb
*irb
)
2097 struct qdio_irq
*irq_ptr
;
2101 #ifdef CONFIG_QDIO_DEBUG
2102 QDIO_DBF_TEXT4(0, trace
, "qint");
2103 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2104 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2105 #endif /* CONFIG_QDIO_DEBUG */
2108 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2109 "handler, device %s\n", cdev
->dev
.bus_id
);
2113 irq_ptr
= cdev
->private->qdio_data
;
2115 QDIO_DBF_TEXT2(1, trace
, "uint");
2116 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2117 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2118 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2124 /* Currently running i/o is in error. */
2125 switch (PTR_ERR(irb
)) {
2127 QDIO_PRINT_ERR("i/o error on device %s\n",
2131 qdio_timeout_handler(cdev
);
2134 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2135 PTR_ERR(irb
), cdev
->dev
.bus_id
);
2140 qdio_irq_check_sense(irq_ptr
->schid
, irb
);
2142 #ifdef CONFIG_QDIO_DEBUG
2143 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2144 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2145 #endif /* CONFIG_QDIO_DEBUG */
2147 cstat
= irb
->scsw
.cstat
;
2148 dstat
= irb
->scsw
.dstat
;
2150 switch (irq_ptr
->state
) {
2151 case QDIO_IRQ_STATE_INACTIVE
:
2152 qdio_establish_handle_irq(cdev
, cstat
, dstat
);
2155 case QDIO_IRQ_STATE_CLEANUP
:
2156 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2159 case QDIO_IRQ_STATE_ESTABLISHED
:
2160 case QDIO_IRQ_STATE_ACTIVE
:
2161 if (cstat
& SCHN_STAT_PCI
) {
2162 qdio_handle_pci(irq_ptr
);
2166 if ((cstat
&~SCHN_STAT_PCI
)||dstat
) {
2167 qdio_handle_activate_check(cdev
, intparm
, cstat
, dstat
);
2171 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2173 irq_ptr
->state
, cdev
->dev
.bus_id
);
2175 wake_up(&cdev
->private->wait_q
);
2180 qdio_synchronize(struct ccw_device
*cdev
, unsigned int flags
,
2181 unsigned int queue_number
)
2185 struct qdio_irq
*irq_ptr
;
2187 #ifdef CONFIG_QDIO_DEBUG
2188 char dbf_text
[15]="SyncXXXX";
2191 irq_ptr
= cdev
->private->qdio_data
;
2195 #ifdef CONFIG_QDIO_DEBUG
2196 *((int*)(&dbf_text
[4])) = irq_ptr
->schid
.sch_no
;
2197 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2198 *((int*)(&dbf_text
[0]))=flags
;
2199 *((int*)(&dbf_text
[4]))=queue_number
;
2200 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2201 #endif /* CONFIG_QDIO_DEBUG */
2203 if (flags
&QDIO_FLAG_SYNC_INPUT
) {
2204 q
=irq_ptr
->input_qs
[queue_number
];
2207 if (!(irq_ptr
->is_qebsm
))
2208 cc
= do_siga_sync(q
->schid
, 0, q
->mask
);
2209 } else if (flags
&QDIO_FLAG_SYNC_OUTPUT
) {
2210 q
=irq_ptr
->output_qs
[queue_number
];
2213 if (!(irq_ptr
->is_qebsm
))
2214 cc
= do_siga_sync(q
->schid
, q
->mask
, 0);
2220 QDIO_DBF_HEX3(0,trace
,&ptr
,sizeof(int));
2226 qdio_check_subchannel_qebsm(struct qdio_irq
*irq_ptr
, unsigned char qdioac
,
2227 unsigned long token
)
2231 unsigned int count
, start_buf
;
2234 /*check if QEBSM is disabled */
2235 if (!(irq_ptr
->is_qebsm
) || !(qdioac
& 0x01)) {
2236 irq_ptr
->is_qebsm
= 0;
2237 irq_ptr
->sch_token
= 0;
2238 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2239 QDIO_DBF_TEXT0(0,setup
,"noV=V");
2242 irq_ptr
->sch_token
= token
;
2244 for (i
= 0; i
< irq_ptr
->no_input_qs
;i
++) {
2245 q
= irq_ptr
->input_qs
[i
];
2246 count
= QDIO_MAX_BUFFERS_PER_Q
;
2248 set_slsb(q
, &start_buf
, SLSB_P_INPUT_NOT_INIT
, &count
);
2250 sprintf(dbf_text
,"V=V:%2x",irq_ptr
->is_qebsm
);
2251 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2252 sprintf(dbf_text
,"%8lx",irq_ptr
->sch_token
);
2253 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2255 for (i
= 0; i
< irq_ptr
->no_output_qs
; i
++) {
2256 q
= irq_ptr
->output_qs
[i
];
2257 count
= QDIO_MAX_BUFFERS_PER_Q
;
2259 set_slsb(q
, &start_buf
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
2264 qdio_get_ssqd_information(struct qdio_irq
*irq_ptr
)
2267 unsigned char qdioac
;
2269 struct chsc_header request
;
2277 struct chsc_header response
;
2296 QDIO_DBF_TEXT0(0,setup
,"getssqd");
2298 ssqd_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2300 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2301 "SIGAs for sch x%x.\n", irq_ptr
->schid
.sch_no
);
2302 irq_ptr
->qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2303 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2304 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2305 irq_ptr
->is_qebsm
= 0;
2306 irq_ptr
->sch_token
= 0;
2307 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2311 ssqd_area
->request
= (struct chsc_header
) {
2315 ssqd_area
->first_sch
= irq_ptr
->schid
.sch_no
;
2316 ssqd_area
->last_sch
= irq_ptr
->schid
.sch_no
;
2317 ssqd_area
->ssid
= irq_ptr
->schid
.ssid
;
2318 result
= chsc(ssqd_area
);
2321 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
2322 "SIGAs for sch 0.%x.%x.\n", result
,
2323 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2324 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2325 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2326 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2327 irq_ptr
->is_qebsm
= 0;
2331 if (ssqd_area
->response
.code
!= QDIO_CHSC_RESPONSE_CODE_OK
) {
2332 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2333 "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n",
2334 ssqd_area
->response
.code
,
2335 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2336 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2337 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2338 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2339 irq_ptr
->is_qebsm
= 0;
2342 if (!(ssqd_area
->flags
& CHSC_FLAG_QDIO_CAPABILITY
) ||
2343 !(ssqd_area
->flags
& CHSC_FLAG_VALIDITY
) ||
2344 (ssqd_area
->sch
!= irq_ptr
->schid
.sch_no
)) {
2345 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2346 "using all SIGAs.\n",
2347 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2348 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2349 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2350 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* worst case */
2351 irq_ptr
->is_qebsm
= 0;
2354 qdioac
= ssqd_area
->qdioac1
;
2356 qdio_check_subchannel_qebsm(irq_ptr
, qdioac
,
2357 ssqd_area
->sch_token
);
2358 mempool_free(ssqd_area
, qdio_mempool_scssc
);
2359 irq_ptr
->qdioac
= qdioac
;
2363 tiqdio_check_chsc_availability(void)
2367 if (!css_characteristics_avail
)
2370 /* Check for bit 41. */
2371 if (!css_general_characteristics
.aif
) {
2372 QDIO_PRINT_WARN("Adapter interruption facility not " \
2377 /* Check for bits 107 and 108. */
2378 if (!css_chsc_characteristics
.scssc
||
2379 !css_chsc_characteristics
.scsscf
) {
2380 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2381 "not available.\n");
2385 /* Check for OSA/FCP thin interrupts (bit 67). */
2386 hydra_thinints
= css_general_characteristics
.aif_osa
;
2387 sprintf(dbf_text
,"hydrati%1x", hydra_thinints
);
2388 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2391 /* Check for QEBSM support in general (bit 58). */
2392 is_passthrough
= css_general_characteristics
.qebsm
;
2394 sprintf(dbf_text
,"cssQBS:%1x", is_passthrough
);
2395 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2397 /* Check for aif time delay disablement fac (bit 56). If installed,
2398 * omit svs even under lpar (good point by rick again) */
2399 omit_svs
= css_general_characteristics
.aif_tdd
;
2400 sprintf(dbf_text
,"omitsvs%1x", omit_svs
);
2401 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2407 tiqdio_set_subchannel_ind(struct qdio_irq
*irq_ptr
, int reset_to_zero
)
2409 unsigned long real_addr_local_summary_bit
;
2410 unsigned long real_addr_dev_st_chg_ind
;
2414 unsigned int resp_code
;
2418 struct chsc_header request
;
2423 u64 summary_indicator_addr
;
2424 u64 subchannel_indicator_addr
;
2429 u32 word_with_d_bit
;
2430 /* set to 0x10000000 to enable
2431 * time delay disablement facility */
2433 struct subchannel_id schid
;
2434 u32 reserved6
[1004];
2435 struct chsc_header response
;
2439 if (!irq_ptr
->is_thinint_irq
)
2442 if (reset_to_zero
) {
2443 real_addr_local_summary_bit
=0;
2444 real_addr_dev_st_chg_ind
=0;
2446 real_addr_local_summary_bit
=
2447 virt_to_phys((volatile void *)indicators
);
2448 real_addr_dev_st_chg_ind
=
2449 virt_to_phys((volatile void *)irq_ptr
->dev_st_chg_ind
);
2452 scssc_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2454 QDIO_PRINT_WARN("No memory for setting indicators on " \
2455 "subchannel 0.%x.%x.\n",
2456 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2459 scssc_area
->request
= (struct chsc_header
) {
2463 scssc_area
->operation_code
= 0;
2465 scssc_area
->summary_indicator_addr
= real_addr_local_summary_bit
;
2466 scssc_area
->subchannel_indicator_addr
= real_addr_dev_st_chg_ind
;
2467 scssc_area
->ks
= QDIO_STORAGE_KEY
;
2468 scssc_area
->kc
= QDIO_STORAGE_KEY
;
2469 scssc_area
->isc
= TIQDIO_THININT_ISC
;
2470 scssc_area
->schid
= irq_ptr
->schid
;
2471 /* enables the time delay disablement facility. Don't care
2472 * whether it is really there (i.e. we haven't checked for
2474 if (css_general_characteristics
.aif_tdd
)
2475 scssc_area
->word_with_d_bit
= 0x10000000;
2477 QDIO_PRINT_WARN("Time delay disablement facility " \
2480 result
= chsc(scssc_area
);
2482 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2484 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,result
);
2489 resp_code
= scssc_area
->response
.code
;
2490 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2491 QDIO_PRINT_WARN("response upon setting indicators " \
2492 "is 0x%x.\n",resp_code
);
2493 sprintf(dbf_text
,"sidR%4x",resp_code
);
2494 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2495 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2496 ptr
=&scssc_area
->response
;
2497 QDIO_DBF_HEX2(1,setup
,&ptr
,QDIO_DBF_SETUP_LEN
);
2502 QDIO_DBF_TEXT2(0,setup
,"setscind");
2503 QDIO_DBF_HEX2(0,setup
,&real_addr_local_summary_bit
,
2504 sizeof(unsigned long));
2505 QDIO_DBF_HEX2(0,setup
,&real_addr_dev_st_chg_ind
,sizeof(unsigned long));
2508 mempool_free(scssc_area
, qdio_mempool_scssc
);
2514 tiqdio_set_delay_target(struct qdio_irq
*irq_ptr
, unsigned long delay_target
)
2516 unsigned int resp_code
;
2522 struct chsc_header request
;
2529 u32 reserved5
[1009];
2530 struct chsc_header response
;
2534 if (!irq_ptr
->is_thinint_irq
)
2537 scsscf_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2539 QDIO_PRINT_WARN("No memory for setting delay target on " \
2540 "subchannel 0.%x.%x.\n",
2541 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2544 scsscf_area
->request
= (struct chsc_header
) {
2549 scsscf_area
->delay_target
= delay_target
<<16;
2551 result
=chsc(scsscf_area
);
2553 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2554 "cc=%i. Continuing.\n",
2555 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2561 resp_code
= scsscf_area
->response
.code
;
2562 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2563 QDIO_PRINT_WARN("response upon setting delay target " \
2564 "is 0x%x. Continuing.\n",resp_code
);
2565 sprintf(dbf_text
,"sdtR%4x",resp_code
);
2566 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2567 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2568 ptr
=&scsscf_area
->response
;
2569 QDIO_DBF_HEX2(1,trace
,&ptr
,QDIO_DBF_TRACE_LEN
);
2571 QDIO_DBF_TEXT2(0,trace
,"delytrgt");
2572 QDIO_DBF_HEX2(0,trace
,&delay_target
,sizeof(unsigned long));
2573 result
= 0; /* not critical */
2575 mempool_free(scsscf_area
, qdio_mempool_scssc
);
2580 qdio_cleanup(struct ccw_device
*cdev
, int how
)
2582 struct qdio_irq
*irq_ptr
;
2586 irq_ptr
= cdev
->private->qdio_data
;
2590 sprintf(dbf_text
,"qcln%4x",irq_ptr
->schid
.sch_no
);
2591 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2592 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2594 rc
= qdio_shutdown(cdev
, how
);
2595 if ((rc
== 0) || (rc
== -EINPROGRESS
))
2596 rc
= qdio_free(cdev
);
2601 qdio_shutdown(struct ccw_device
*cdev
, int how
)
2603 struct qdio_irq
*irq_ptr
;
2607 unsigned long flags
;
2611 irq_ptr
= cdev
->private->qdio_data
;
2615 down(&irq_ptr
->setting_up_sema
);
2617 sprintf(dbf_text
,"qsqs%4x",irq_ptr
->schid
.sch_no
);
2618 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2619 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2621 /* mark all qs as uninteresting */
2622 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
2623 atomic_set(&irq_ptr
->input_qs
[i
]->is_in_shutdown
,1);
2625 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
2626 atomic_set(&irq_ptr
->output_qs
[i
]->is_in_shutdown
,1);
2628 tasklet_kill(&tiqdio_tasklet
);
2630 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2631 qdio_unmark_q(irq_ptr
->input_qs
[i
]);
2632 tasklet_kill(&irq_ptr
->input_qs
[i
]->tasklet
);
2633 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2634 !atomic_read(&irq_ptr
->
2637 QDIO_NO_USE_COUNT_TIMEOUT
);
2638 if (atomic_read(&irq_ptr
->input_qs
[i
]->use_count
))
2639 result
=-EINPROGRESS
;
2642 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2643 tasklet_kill(&irq_ptr
->output_qs
[i
]->tasklet
);
2644 del_timer(&irq_ptr
->output_qs
[i
]->timer
);
2645 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2646 !atomic_read(&irq_ptr
->
2649 QDIO_NO_USE_COUNT_TIMEOUT
);
2650 if (atomic_read(&irq_ptr
->output_qs
[i
]->use_count
))
2651 result
=-EINPROGRESS
;
2654 /* cleanup subchannel */
2655 spin_lock_irqsave(get_ccwdev_lock(cdev
),flags
);
2656 if (how
&QDIO_FLAG_CLEANUP_USING_CLEAR
) {
2657 rc
= ccw_device_clear(cdev
, QDIO_DOING_CLEANUP
);
2658 timeout
=QDIO_CLEANUP_CLEAR_TIMEOUT
;
2659 } else if (how
&QDIO_FLAG_CLEANUP_USING_HALT
) {
2660 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2661 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2662 } else { /* default behaviour */
2663 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2664 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2666 if (rc
== -ENODEV
) {
2667 /* No need to wait for device no longer present. */
2668 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2669 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2670 } else if (((void *)cdev
->handler
!= (void *)qdio_handler
) && rc
== 0) {
2672 * Whoever put another handler there, has to cope with the
2673 * interrupt theirself. Might happen if qdio_shutdown was
2674 * called on already shutdown queues, but this shouldn't have
2677 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2678 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2679 } else if (rc
== 0) {
2680 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_CLEANUP
);
2681 ccw_device_set_timeout(cdev
, timeout
);
2682 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),flags
);
2684 wait_event(cdev
->private->wait_q
,
2685 irq_ptr
->state
== QDIO_IRQ_STATE_INACTIVE
||
2686 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
2688 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2689 "device %s\n", result
, cdev
->dev
.bus_id
);
2690 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2694 if (irq_ptr
->is_thinint_irq
) {
2695 qdio_put_indicator((__u32
*)irq_ptr
->dev_st_chg_ind
);
2696 tiqdio_set_subchannel_ind(irq_ptr
,1);
2697 /* reset adapter interrupt indicators */
2700 /* exchange int handlers, if necessary */
2701 if ((void*)cdev
->handler
== (void*)qdio_handler
)
2702 cdev
->handler
=irq_ptr
->original_int_handler
;
2704 /* Ignore errors. */
2705 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2706 ccw_device_set_timeout(cdev
, 0);
2708 up(&irq_ptr
->setting_up_sema
);
2713 qdio_free(struct ccw_device
*cdev
)
2715 struct qdio_irq
*irq_ptr
;
2718 irq_ptr
= cdev
->private->qdio_data
;
2722 down(&irq_ptr
->setting_up_sema
);
2724 sprintf(dbf_text
,"qfqs%4x",irq_ptr
->schid
.sch_no
);
2725 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2726 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2728 cdev
->private->qdio_data
= NULL
;
2730 up(&irq_ptr
->setting_up_sema
);
2732 qdio_release_irq_memory(irq_ptr
);
2733 module_put(THIS_MODULE
);
2738 qdio_allocate_do_dbf(struct qdio_initialize
*init_data
)
2740 char dbf_text
[20]; /* if a printf printed out more than 8 chars */
2742 sprintf(dbf_text
,"qfmt:%x",init_data
->q_format
);
2743 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2744 QDIO_DBF_HEX0(0,setup
,init_data
->adapter_name
,8);
2745 sprintf(dbf_text
,"qpff%4x",init_data
->qib_param_field_format
);
2746 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2747 QDIO_DBF_HEX0(0,setup
,&init_data
->qib_param_field
,sizeof(char*));
2748 QDIO_DBF_HEX0(0,setup
,&init_data
->input_slib_elements
,sizeof(long*));
2749 QDIO_DBF_HEX0(0,setup
,&init_data
->output_slib_elements
,sizeof(long*));
2750 sprintf(dbf_text
,"miit%4x",init_data
->min_input_threshold
);
2751 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2752 sprintf(dbf_text
,"mait%4x",init_data
->max_input_threshold
);
2753 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2754 sprintf(dbf_text
,"miot%4x",init_data
->min_output_threshold
);
2755 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2756 sprintf(dbf_text
,"maot%4x",init_data
->max_output_threshold
);
2757 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2758 sprintf(dbf_text
,"niq:%4x",init_data
->no_input_qs
);
2759 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2760 sprintf(dbf_text
,"noq:%4x",init_data
->no_output_qs
);
2761 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2762 QDIO_DBF_HEX0(0,setup
,&init_data
->input_handler
,sizeof(void*));
2763 QDIO_DBF_HEX0(0,setup
,&init_data
->output_handler
,sizeof(void*));
2764 QDIO_DBF_HEX0(0,setup
,&init_data
->int_parm
,sizeof(long));
2765 QDIO_DBF_HEX0(0,setup
,&init_data
->flags
,sizeof(long));
2766 QDIO_DBF_HEX0(0,setup
,&init_data
->input_sbal_addr_array
,sizeof(void*));
2767 QDIO_DBF_HEX0(0,setup
,&init_data
->output_sbal_addr_array
,sizeof(void*));
2771 qdio_allocate_fill_input_desc(struct qdio_irq
*irq_ptr
, int i
, int iqfmt
)
2773 irq_ptr
->input_qs
[i
]->is_iqdio_q
= iqfmt
;
2774 irq_ptr
->input_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2776 irq_ptr
->qdr
->qdf0
[i
].sliba
=(unsigned long)(irq_ptr
->input_qs
[i
]->slib
);
2778 irq_ptr
->qdr
->qdf0
[i
].sla
=(unsigned long)(irq_ptr
->input_qs
[i
]->sl
);
2780 irq_ptr
->qdr
->qdf0
[i
].slsba
=
2781 (unsigned long)(&irq_ptr
->input_qs
[i
]->slsb
.acc
.val
[0]);
2783 irq_ptr
->qdr
->qdf0
[i
].akey
=QDIO_STORAGE_KEY
;
2784 irq_ptr
->qdr
->qdf0
[i
].bkey
=QDIO_STORAGE_KEY
;
2785 irq_ptr
->qdr
->qdf0
[i
].ckey
=QDIO_STORAGE_KEY
;
2786 irq_ptr
->qdr
->qdf0
[i
].dkey
=QDIO_STORAGE_KEY
;
2790 qdio_allocate_fill_output_desc(struct qdio_irq
*irq_ptr
, int i
,
2793 irq_ptr
->output_qs
[i
]->is_iqdio_q
= iqfmt
;
2794 irq_ptr
->output_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2796 irq_ptr
->qdr
->qdf0
[i
+j
].sliba
=(unsigned long)(irq_ptr
->output_qs
[i
]->slib
);
2798 irq_ptr
->qdr
->qdf0
[i
+j
].sla
=(unsigned long)(irq_ptr
->output_qs
[i
]->sl
);
2800 irq_ptr
->qdr
->qdf0
[i
+j
].slsba
=
2801 (unsigned long)(&irq_ptr
->output_qs
[i
]->slsb
.acc
.val
[0]);
2803 irq_ptr
->qdr
->qdf0
[i
+j
].akey
=QDIO_STORAGE_KEY
;
2804 irq_ptr
->qdr
->qdf0
[i
+j
].bkey
=QDIO_STORAGE_KEY
;
2805 irq_ptr
->qdr
->qdf0
[i
+j
].ckey
=QDIO_STORAGE_KEY
;
2806 irq_ptr
->qdr
->qdf0
[i
+j
].dkey
=QDIO_STORAGE_KEY
;
2811 qdio_initialize_set_siga_flags_input(struct qdio_irq
*irq_ptr
)
2815 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2816 irq_ptr
->input_qs
[i
]->siga_sync
=
2817 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2818 irq_ptr
->input_qs
[i
]->siga_in
=
2819 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2820 irq_ptr
->input_qs
[i
]->siga_out
=
2821 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2822 irq_ptr
->input_qs
[i
]->siga_sync_done_on_thinints
=
2823 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2824 irq_ptr
->input_qs
[i
]->hydra_gives_outbound_pcis
=
2825 irq_ptr
->hydra_gives_outbound_pcis
;
2826 irq_ptr
->input_qs
[i
]->siga_sync_done_on_outb_tis
=
2828 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2829 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2830 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2831 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2837 qdio_initialize_set_siga_flags_output(struct qdio_irq
*irq_ptr
)
2841 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2842 irq_ptr
->output_qs
[i
]->siga_sync
=
2843 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2844 irq_ptr
->output_qs
[i
]->siga_in
=
2845 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2846 irq_ptr
->output_qs
[i
]->siga_out
=
2847 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2848 irq_ptr
->output_qs
[i
]->siga_sync_done_on_thinints
=
2849 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2850 irq_ptr
->output_qs
[i
]->hydra_gives_outbound_pcis
=
2851 irq_ptr
->hydra_gives_outbound_pcis
;
2852 irq_ptr
->output_qs
[i
]->siga_sync_done_on_outb_tis
=
2854 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2855 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2856 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2857 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2863 qdio_establish_irq_check_for_errors(struct ccw_device
*cdev
, int cstat
,
2867 struct qdio_irq
*irq_ptr
;
2869 irq_ptr
= cdev
->private->qdio_data
;
2871 if (cstat
|| (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
))) {
2872 sprintf(dbf_text
,"ick1%4x",irq_ptr
->schid
.sch_no
);
2873 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2874 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2875 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2876 QDIO_PRINT_ERR("received check condition on establish " \
2877 "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2878 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2880 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ERR
);
2883 if (!(dstat
& DEV_STAT_DEV_END
)) {
2884 QDIO_DBF_TEXT2(1,setup
,"eq:no de");
2885 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2886 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2887 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
2888 "device end: dstat=%02x, cstat=%02x\n",
2889 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2891 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2895 if (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
)) {
2896 QDIO_DBF_TEXT2(1,setup
,"eq:badio");
2897 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2898 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2899 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
2900 "the following devstat: dstat=%02x, "
2901 "cstat=%02x\n", irq_ptr
->schid
.ssid
,
2902 irq_ptr
->schid
.sch_no
, dstat
, cstat
);
2903 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2910 qdio_establish_handle_irq(struct ccw_device
*cdev
, int cstat
, int dstat
)
2912 struct qdio_irq
*irq_ptr
;
2915 irq_ptr
= cdev
->private->qdio_data
;
2917 sprintf(dbf_text
,"qehi%4x",cdev
->private->schid
.sch_no
);
2918 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2919 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2921 if (qdio_establish_irq_check_for_errors(cdev
, cstat
, dstat
)) {
2922 ccw_device_set_timeout(cdev
, 0);
2926 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ESTABLISHED
);
2927 ccw_device_set_timeout(cdev
, 0);
2931 qdio_initialize(struct qdio_initialize
*init_data
)
2936 sprintf(dbf_text
,"qini%4x",init_data
->cdev
->private->schid
.sch_no
);
2937 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2938 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2940 rc
= qdio_allocate(init_data
);
2942 rc
= qdio_establish(init_data
);
2944 qdio_free(init_data
->cdev
);
2952 qdio_allocate(struct qdio_initialize
*init_data
)
2954 struct qdio_irq
*irq_ptr
;
2957 sprintf(dbf_text
,"qalc%4x",init_data
->cdev
->private->schid
.sch_no
);
2958 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2959 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2960 if ( (init_data
->no_input_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2961 (init_data
->no_output_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2962 ((init_data
->no_input_qs
) && (!init_data
->input_handler
)) ||
2963 ((init_data
->no_output_qs
) && (!init_data
->output_handler
)) )
2966 if (!init_data
->input_sbal_addr_array
)
2969 if (!init_data
->output_sbal_addr_array
)
2972 qdio_allocate_do_dbf(init_data
);
2975 irq_ptr
= (void *) get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
2977 QDIO_DBF_TEXT0(0,setup
,"irq_ptr:");
2978 QDIO_DBF_HEX0(0,setup
,&irq_ptr
,sizeof(void*));
2981 QDIO_PRINT_ERR("allocation of irq_ptr failed!\n");
2985 init_MUTEX(&irq_ptr
->setting_up_sema
);
2987 /* QDR must be in DMA area since CCW data address is only 32 bit */
2988 irq_ptr
->qdr
= (struct qdr
*) __get_free_page(GFP_KERNEL
| GFP_DMA
);
2989 if (!(irq_ptr
->qdr
)) {
2990 free_page((unsigned long) irq_ptr
);
2991 QDIO_PRINT_ERR("allocation of irq_ptr->qdr failed!\n");
2994 QDIO_DBF_TEXT0(0,setup
,"qdr:");
2995 QDIO_DBF_HEX0(0,setup
,&irq_ptr
->qdr
,sizeof(void*));
2997 if (qdio_alloc_qs(irq_ptr
,
2998 init_data
->no_input_qs
,
2999 init_data
->no_output_qs
)) {
3000 QDIO_PRINT_ERR("queue allocation failed!\n");
3001 qdio_release_irq_memory(irq_ptr
);
3005 init_data
->cdev
->private->qdio_data
= irq_ptr
;
3007 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_INACTIVE
);
3012 static int qdio_fill_irq(struct qdio_initialize
*init_data
)
3018 struct qdio_irq
*irq_ptr
;
3020 irq_ptr
= init_data
->cdev
->private->qdio_data
;
3022 memset(irq_ptr
,0,((char*)&irq_ptr
->qdr
)-((char*)irq_ptr
));
3024 /* wipes qib.ac, required by ar7063 */
3025 memset(irq_ptr
->qdr
,0,sizeof(struct qdr
));
3027 irq_ptr
->int_parm
=init_data
->int_parm
;
3029 irq_ptr
->schid
= ccw_device_get_subchannel_id(init_data
->cdev
);
3030 irq_ptr
->no_input_qs
=init_data
->no_input_qs
;
3031 irq_ptr
->no_output_qs
=init_data
->no_output_qs
;
3033 if (init_data
->q_format
==QDIO_IQDIO_QFMT
) {
3034 irq_ptr
->is_iqdio_irq
=1;
3035 irq_ptr
->is_thinint_irq
=1;
3037 irq_ptr
->is_iqdio_irq
=0;
3038 irq_ptr
->is_thinint_irq
=hydra_thinints
;
3040 sprintf(dbf_text
,"is_i_t%1x%1x",
3041 irq_ptr
->is_iqdio_irq
,irq_ptr
->is_thinint_irq
);
3042 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3044 if (irq_ptr
->is_thinint_irq
) {
3045 irq_ptr
->dev_st_chg_ind
= qdio_get_indicator();
3046 QDIO_DBF_HEX1(0,setup
,&irq_ptr
->dev_st_chg_ind
,sizeof(void*));
3047 if (!irq_ptr
->dev_st_chg_ind
) {
3048 QDIO_PRINT_WARN("no indicator location available " \
3049 "for irq 0.%x.%x\n",
3050 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
3051 qdio_release_irq_memory(irq_ptr
);
3057 irq_ptr
->equeue
.cmd
=DEFAULT_ESTABLISH_QS_CMD
;
3058 irq_ptr
->equeue
.count
=DEFAULT_ESTABLISH_QS_COUNT
;
3059 irq_ptr
->aqueue
.cmd
=DEFAULT_ACTIVATE_QS_CMD
;
3060 irq_ptr
->aqueue
.count
=DEFAULT_ACTIVATE_QS_COUNT
;
3062 qdio_fill_qs(irq_ptr
, init_data
->cdev
,
3063 init_data
->no_input_qs
,
3064 init_data
->no_output_qs
,
3065 init_data
->input_handler
,
3066 init_data
->output_handler
,init_data
->int_parm
,
3067 init_data
->q_format
,init_data
->flags
,
3068 init_data
->input_sbal_addr_array
,
3069 init_data
->output_sbal_addr_array
);
3071 if (!try_module_get(THIS_MODULE
)) {
3072 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3073 qdio_release_irq_memory(irq_ptr
);
3077 qdio_fill_thresholds(irq_ptr
,init_data
->no_input_qs
,
3078 init_data
->no_output_qs
,
3079 init_data
->min_input_threshold
,
3080 init_data
->max_input_threshold
,
3081 init_data
->min_output_threshold
,
3082 init_data
->max_output_threshold
);
3085 irq_ptr
->qdr
->qfmt
=init_data
->q_format
;
3086 irq_ptr
->qdr
->iqdcnt
=init_data
->no_input_qs
;
3087 irq_ptr
->qdr
->oqdcnt
=init_data
->no_output_qs
;
3088 irq_ptr
->qdr
->iqdsz
=sizeof(struct qdesfmt0
)/4; /* size in words */
3089 irq_ptr
->qdr
->oqdsz
=sizeof(struct qdesfmt0
)/4;
3091 irq_ptr
->qdr
->qiba
=(unsigned long)&irq_ptr
->qib
;
3092 irq_ptr
->qdr
->qkey
=QDIO_STORAGE_KEY
;
3095 irq_ptr
->is_qebsm
= is_passthrough
;
3096 if (irq_ptr
->is_qebsm
)
3097 irq_ptr
->qib
.rflags
|= QIB_RFLAGS_ENABLE_QEBSM
;
3099 irq_ptr
->qib
.qfmt
=init_data
->q_format
;
3100 if (init_data
->no_input_qs
)
3101 irq_ptr
->qib
.isliba
=(unsigned long)(irq_ptr
->input_qs
[0]->slib
);
3102 if (init_data
->no_output_qs
)
3103 irq_ptr
->qib
.osliba
=(unsigned long)(irq_ptr
->output_qs
[0]->slib
);
3104 memcpy(irq_ptr
->qib
.ebcnam
,init_data
->adapter_name
,8);
3106 qdio_set_impl_params(irq_ptr
,init_data
->qib_param_field_format
,
3107 init_data
->qib_param_field
,
3108 init_data
->no_input_qs
,
3109 init_data
->no_output_qs
,
3110 init_data
->input_slib_elements
,
3111 init_data
->output_slib_elements
);
3113 /* first input descriptors, then output descriptors */
3114 is_iqdio
= (init_data
->q_format
== QDIO_IQDIO_QFMT
) ? 1 : 0;
3115 for (i
=0;i
<init_data
->no_input_qs
;i
++)
3116 qdio_allocate_fill_input_desc(irq_ptr
, i
, is_iqdio
);
3118 for (i
=0;i
<init_data
->no_output_qs
;i
++)
3119 qdio_allocate_fill_output_desc(irq_ptr
, i
,
3120 init_data
->no_input_qs
,
3123 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3125 /* get qdio commands */
3126 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_EQUEUE
);
3128 QDIO_DBF_TEXT2(1,setup
,"no eq");
3129 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3130 "Trying to use default.\n");
3132 irq_ptr
->equeue
= *ciw
;
3133 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_AQUEUE
);
3135 QDIO_DBF_TEXT2(1,setup
,"no aq");
3136 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3137 "Trying to use default.\n");
3139 irq_ptr
->aqueue
= *ciw
;
3141 /* Set new interrupt handler. */
3142 irq_ptr
->original_int_handler
= init_data
->cdev
->handler
;
3143 init_data
->cdev
->handler
= qdio_handler
;
3149 qdio_establish(struct qdio_initialize
*init_data
)
3151 struct qdio_irq
*irq_ptr
;
3152 unsigned long saveflags
;
3153 int result
, result2
;
3154 struct ccw_device
*cdev
;
3157 cdev
=init_data
->cdev
;
3158 irq_ptr
= cdev
->private->qdio_data
;
3162 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3165 down(&irq_ptr
->setting_up_sema
);
3167 qdio_fill_irq(init_data
);
3169 /* the thinint CHSC stuff */
3170 if (irq_ptr
->is_thinint_irq
) {
3172 result
= tiqdio_set_subchannel_ind(irq_ptr
,0);
3174 up(&irq_ptr
->setting_up_sema
);
3175 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3178 tiqdio_set_delay_target(irq_ptr
,TIQDIO_DELAY_TARGET
);
3181 sprintf(dbf_text
,"qest%4x",cdev
->private->schid
.sch_no
);
3182 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3183 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
3186 irq_ptr
->ccw
.cmd_code
=irq_ptr
->equeue
.cmd
;
3187 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3188 irq_ptr
->ccw
.count
=irq_ptr
->equeue
.count
;
3189 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(irq_ptr
->qdr
);
3191 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3193 ccw_device_set_options_mask(cdev
, 0);
3194 result
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3195 QDIO_DOING_ESTABLISH
,0, 0,
3196 QDIO_ESTABLISH_TIMEOUT
);
3198 result2
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3199 QDIO_DOING_ESTABLISH
,0,0,
3200 QDIO_ESTABLISH_TIMEOUT
);
3201 sprintf(dbf_text
,"eq:io%4x",result
);
3202 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3204 sprintf(dbf_text
,"eq:io%4x",result
);
3205 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3207 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3208 "returned %i, next try returned %i\n",
3209 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3213 ccw_device_set_timeout(cdev
, 0);
3216 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3219 up(&irq_ptr
->setting_up_sema
);
3220 qdio_shutdown(cdev
,QDIO_FLAG_CLEANUP_USING_CLEAR
);
3224 /* Timeout is cared for already by using ccw_device_start_timeout(). */
3225 wait_event_interruptible(cdev
->private->wait_q
,
3226 irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
||
3227 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
3229 if (irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
)
3232 up(&irq_ptr
->setting_up_sema
);
3233 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3237 qdio_get_ssqd_information(irq_ptr
);
3238 /* if this gets set once, we're running under VM and can omit SVSes */
3239 if (irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
)
3242 sprintf(dbf_text
,"qdioac%2x",irq_ptr
->qdioac
);
3243 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3245 sprintf(dbf_text
,"qib ac%2x",irq_ptr
->qib
.ac
);
3246 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3248 irq_ptr
->hydra_gives_outbound_pcis
=
3249 irq_ptr
->qib
.ac
&QIB_AC_OUTBOUND_PCI_SUPPORTED
;
3250 irq_ptr
->sync_done_on_outb_pcis
=
3251 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
;
3253 qdio_initialize_set_siga_flags_input(irq_ptr
);
3254 qdio_initialize_set_siga_flags_output(irq_ptr
);
3256 up(&irq_ptr
->setting_up_sema
);
3263 qdio_activate(struct ccw_device
*cdev
, int flags
)
3265 struct qdio_irq
*irq_ptr
;
3266 int i
,result
=0,result2
;
3267 unsigned long saveflags
;
3268 char dbf_text
[20]; /* see qdio_initialize */
3270 irq_ptr
= cdev
->private->qdio_data
;
3274 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3277 down(&irq_ptr
->setting_up_sema
);
3278 if (irq_ptr
->state
==QDIO_IRQ_STATE_INACTIVE
) {
3283 sprintf(dbf_text
,"qact%4x", irq_ptr
->schid
.sch_no
);
3284 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3285 QDIO_DBF_TEXT2(0,trace
,dbf_text
);
3288 irq_ptr
->ccw
.cmd_code
=irq_ptr
->aqueue
.cmd
;
3289 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3290 irq_ptr
->ccw
.count
=irq_ptr
->aqueue
.count
;
3291 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(0);
3293 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3295 ccw_device_set_timeout(cdev
, 0);
3296 ccw_device_set_options(cdev
, CCWDEV_REPORT_ALL
);
3297 result
=ccw_device_start(cdev
,&irq_ptr
->ccw
,QDIO_DOING_ACTIVATE
,
3298 0, DOIO_DENY_PREFETCH
);
3300 result2
=ccw_device_start(cdev
,&irq_ptr
->ccw
,
3301 QDIO_DOING_ACTIVATE
,0,0);
3302 sprintf(dbf_text
,"aq:io%4x",result
);
3303 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3305 sprintf(dbf_text
,"aq:io%4x",result
);
3306 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3308 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3309 "returned %i, next try returned %i\n",
3310 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3315 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3319 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3320 if (irq_ptr
->is_thinint_irq
) {
3322 * that way we know, that, if we will get interrupted
3323 * by tiqdio_inbound_processing, qdio_unmark_q will
3326 qdio_reserve_q(irq_ptr
->input_qs
[i
]);
3327 qdio_mark_tiq(irq_ptr
->input_qs
[i
]);
3328 qdio_release_q(irq_ptr
->input_qs
[i
]);
3332 if (flags
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
) {
3333 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3334 irq_ptr
->input_qs
[i
]->is_input_q
|=
3335 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
;
3339 wait_event_interruptible_timeout(cdev
->private->wait_q
,
3341 QDIO_IRQ_STATE_STOPPED
) ||
3343 QDIO_IRQ_STATE_ERR
)),
3344 QDIO_ACTIVATE_TIMEOUT
);
3346 switch (irq_ptr
->state
) {
3347 case QDIO_IRQ_STATE_STOPPED
:
3348 case QDIO_IRQ_STATE_ERR
:
3349 up(&irq_ptr
->setting_up_sema
);
3350 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3351 down(&irq_ptr
->setting_up_sema
);
3355 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ACTIVE
);
3359 up(&irq_ptr
->setting_up_sema
);
3364 /* buffers filled forwards again to make Rick happy */
3366 qdio_do_qdio_fill_input(struct qdio_q
*q
, unsigned int qidx
,
3367 unsigned int count
, struct qdio_buffer
*buffers
)
3369 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3372 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3373 if (irq
->is_qebsm
) {
3375 tmp
= set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3382 set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3385 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3390 qdio_do_qdio_fill_output(struct qdio_q
*q
, unsigned int qidx
,
3391 unsigned int count
, struct qdio_buffer
*buffers
)
3393 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3396 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3397 if (irq
->is_qebsm
) {
3399 tmp
= set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3407 set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3410 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3415 do_qdio_handle_inbound(struct qdio_q
*q
, unsigned int callflags
,
3416 unsigned int qidx
, unsigned int count
,
3417 struct qdio_buffer
*buffers
)
3421 /* This is the inbound handling of queues */
3422 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3424 qdio_do_qdio_fill_input(q
,qidx
,count
,buffers
);
3426 if ((used_elements
+count
==QDIO_MAX_BUFFERS_PER_Q
)&&
3427 (callflags
&QDIO_FLAG_UNDER_INTERRUPT
))
3428 atomic_xchg(&q
->polling
,0);
3432 if (callflags
&QDIO_FLAG_DONT_SIGA
)
3437 result
=qdio_siga_input(q
);
3440 q
->error_status_flags
|=
3441 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
3442 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
3443 q
->siga_error
=result
;
3451 do_qdio_handle_outbound(struct qdio_q
*q
, unsigned int callflags
,
3452 unsigned int qidx
, unsigned int count
,
3453 struct qdio_buffer
*buffers
)
3456 unsigned int cnt
, start_buf
;
3457 unsigned char state
= 0;
3458 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3460 /* This is the outbound handling of queues */
3461 qdio_do_qdio_fill_output(q
,qidx
,count
,buffers
);
3463 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3465 if (callflags
&QDIO_FLAG_DONT_SIGA
) {
3466 qdio_perf_stat_inc(&perf_stats
.outbound_cnt
);
3469 if (callflags
& QDIO_FLAG_PCI_OUT
)
3473 if (q
->is_iqdio_q
) {
3474 /* one siga for every sbal */
3476 qdio_kick_outbound_q(q
);
3478 __qdio_outbound_processing(q
);
3480 /* under VM, we do a SIGA sync unconditionally */
3484 * w/o shadow queues (else branch of
3485 * SYNC_MEMORY :-/ ), we try to
3486 * fast-requeue buffers
3488 if (irq
->is_qebsm
) {
3490 start_buf
= ((qidx
+QDIO_MAX_BUFFERS_PER_Q
-1) &
3491 (QDIO_MAX_BUFFERS_PER_Q
-1));
3492 qdio_do_eqbs(q
, &state
, &start_buf
, &cnt
);
3494 state
= q
->slsb
.acc
.val
[(qidx
+QDIO_MAX_BUFFERS_PER_Q
-1)
3495 &(QDIO_MAX_BUFFERS_PER_Q
-1) ];
3496 if (state
!= SLSB_CU_OUTPUT_PRIMED
) {
3497 qdio_kick_outbound_q(q
);
3499 QDIO_DBF_TEXT3(0,trace
, "fast-req");
3500 qdio_perf_stat_inc(&perf_stats
.fast_reqs
);
3504 * only marking the q could take too long,
3505 * the upper layer module could do a lot of
3506 * traffic in that time
3508 __qdio_outbound_processing(q
);
3511 qdio_perf_stat_inc(&perf_stats
.outbound_cnt
);
3514 /* count must be 1 in iqdio */
3516 do_QDIO(struct ccw_device
*cdev
,unsigned int callflags
,
3517 unsigned int queue_number
, unsigned int qidx
,
3518 unsigned int count
,struct qdio_buffer
*buffers
)
3520 struct qdio_irq
*irq_ptr
;
3521 #ifdef CONFIG_QDIO_DEBUG
3524 sprintf(dbf_text
,"doQD%04x",cdev
->private->schid
.sch_no
);
3525 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3526 #endif /* CONFIG_QDIO_DEBUG */
3528 if ( (qidx
>QDIO_MAX_BUFFERS_PER_Q
) ||
3529 (count
>QDIO_MAX_BUFFERS_PER_Q
) ||
3530 (queue_number
>QDIO_MAX_QUEUES_PER_IRQ
) )
3536 irq_ptr
= cdev
->private->qdio_data
;
3540 #ifdef CONFIG_QDIO_DEBUG
3541 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3542 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->input_qs
[queue_number
],
3545 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->output_qs
[queue_number
],
3547 sprintf(dbf_text
,"flag%04x",callflags
);
3548 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3549 sprintf(dbf_text
,"qi%02xct%02x",qidx
,count
);
3550 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3551 #endif /* CONFIG_QDIO_DEBUG */
3553 if (irq_ptr
->state
!=QDIO_IRQ_STATE_ACTIVE
)
3556 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3557 do_qdio_handle_inbound(irq_ptr
->input_qs
[queue_number
],
3558 callflags
, qidx
, count
, buffers
);
3559 else if (callflags
&QDIO_FLAG_SYNC_OUTPUT
)
3560 do_qdio_handle_outbound(irq_ptr
->output_qs
[queue_number
],
3561 callflags
, qidx
, count
, buffers
);
3563 QDIO_DBF_TEXT3(1,trace
,"doQD:inv");
3570 qdio_perf_procfile_read(char *buffer
, char **buffer_location
, off_t offset
,
3571 int buffer_length
, int *eof
, void *data
)
3575 /* we are always called with buffer_length=4k, so we all
3576 deliver on the first read */
3580 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3582 _OUTP_IT("Number of tasklet runs (total) : %li\n",
3583 (long)atomic64_read(&perf_stats
.tl_runs
));
3584 _OUTP_IT("Inbound tasklet runs tried/retried : %li/%li\n",
3585 (long)atomic64_read(&perf_stats
.inbound_tl_runs
),
3586 (long)atomic64_read(&perf_stats
.inbound_tl_runs_resched
));
3587 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %li/%li\n",
3588 (long)atomic64_read(&perf_stats
.inbound_thin_tl_runs
),
3589 (long)atomic64_read(&perf_stats
.inbound_thin_tl_runs_resched
));
3590 _OUTP_IT("Outbound tasklet runs tried/retried : %li/%li\n",
3591 (long)atomic64_read(&perf_stats
.outbound_tl_runs
),
3592 (long)atomic64_read(&perf_stats
.outbound_tl_runs_resched
));
3594 _OUTP_IT("Number of SIGA sync's issued : %li\n",
3595 (long)atomic64_read(&perf_stats
.siga_syncs
));
3596 _OUTP_IT("Number of SIGA in's issued : %li\n",
3597 (long)atomic64_read(&perf_stats
.siga_ins
));
3598 _OUTP_IT("Number of SIGA out's issued : %li\n",
3599 (long)atomic64_read(&perf_stats
.siga_outs
));
3600 _OUTP_IT("Number of PCIs caught : %li\n",
3601 (long)atomic64_read(&perf_stats
.pcis
));
3602 _OUTP_IT("Number of adapter interrupts caught : %li\n",
3603 (long)atomic64_read(&perf_stats
.thinints
));
3604 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %li\n",
3605 (long)atomic64_read(&perf_stats
.fast_reqs
));
3607 _OUTP_IT("Number of inbound transfers : %li\n",
3608 (long)atomic64_read(&perf_stats
.inbound_cnt
));
3609 _OUTP_IT("Number of do_QDIOs outbound : %li\n",
3610 (long)atomic64_read(&perf_stats
.outbound_cnt
));
3611 #else /* CONFIG_64BIT */
3612 _OUTP_IT("Number of tasklet runs (total) : %i\n",
3613 atomic_read(&perf_stats
.tl_runs
));
3614 _OUTP_IT("Inbound tasklet runs tried/retried : %i/%i\n",
3615 atomic_read(&perf_stats
.inbound_tl_runs
),
3616 atomic_read(&perf_stats
.inbound_tl_runs_resched
));
3617 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %i/%i\n",
3618 atomic_read(&perf_stats
.inbound_thin_tl_runs
),
3619 atomic_read(&perf_stats
.inbound_thin_tl_runs_resched
));
3620 _OUTP_IT("Outbound tasklet runs tried/retried : %i/%i\n",
3621 atomic_read(&perf_stats
.outbound_tl_runs
),
3622 atomic_read(&perf_stats
.outbound_tl_runs_resched
));
3624 _OUTP_IT("Number of SIGA sync's issued : %i\n",
3625 atomic_read(&perf_stats
.siga_syncs
));
3626 _OUTP_IT("Number of SIGA in's issued : %i\n",
3627 atomic_read(&perf_stats
.siga_ins
));
3628 _OUTP_IT("Number of SIGA out's issued : %i\n",
3629 atomic_read(&perf_stats
.siga_outs
));
3630 _OUTP_IT("Number of PCIs caught : %i\n",
3631 atomic_read(&perf_stats
.pcis
));
3632 _OUTP_IT("Number of adapter interrupts caught : %i\n",
3633 atomic_read(&perf_stats
.thinints
));
3634 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %i\n",
3635 atomic_read(&perf_stats
.fast_reqs
));
3637 _OUTP_IT("Number of inbound transfers : %i\n",
3638 atomic_read(&perf_stats
.inbound_cnt
));
3639 _OUTP_IT("Number of do_QDIOs outbound : %i\n",
3640 atomic_read(&perf_stats
.outbound_cnt
));
3641 #endif /* CONFIG_64BIT */
3647 static struct proc_dir_entry
*qdio_perf_proc_file
;
3650 qdio_add_procfs_entry(void)
3652 proc_perf_file_registration
=0;
3653 qdio_perf_proc_file
=create_proc_entry(QDIO_PERF
,
3654 S_IFREG
|0444,&proc_root
);
3655 if (qdio_perf_proc_file
) {
3656 qdio_perf_proc_file
->read_proc
=&qdio_perf_procfile_read
;
3657 } else proc_perf_file_registration
=-1;
3659 if (proc_perf_file_registration
)
3660 QDIO_PRINT_WARN("was not able to register perf. " \
3661 "proc-file (%i).\n",
3662 proc_perf_file_registration
);
3666 qdio_remove_procfs_entry(void)
3668 if (!proc_perf_file_registration
) /* means if it went ok earlier */
3669 remove_proc_entry(QDIO_PERF
,&proc_root
);
3673 * attributes in sysfs
3674 *****************************************************************************/
3677 qdio_performance_stats_show(struct bus_type
*bus
, char *buf
)
3679 return sprintf(buf
, "%i\n", qdio_performance_stats
? 1 : 0);
3683 qdio_performance_stats_store(struct bus_type
*bus
, const char *buf
, size_t count
)
3688 i
= simple_strtoul(buf
, &tmp
, 16);
3689 if ((i
== 0) || (i
== 1)) {
3690 if (i
== qdio_performance_stats
)
3692 qdio_performance_stats
= i
;
3694 /* reset perf. stat. info */
3696 atomic64_set(&perf_stats
.tl_runs
, 0);
3697 atomic64_set(&perf_stats
.outbound_tl_runs
, 0);
3698 atomic64_set(&perf_stats
.inbound_tl_runs
, 0);
3699 atomic64_set(&perf_stats
.inbound_tl_runs_resched
, 0);
3700 atomic64_set(&perf_stats
.inbound_thin_tl_runs
, 0);
3701 atomic64_set(&perf_stats
.inbound_thin_tl_runs_resched
,
3703 atomic64_set(&perf_stats
.siga_outs
, 0);
3704 atomic64_set(&perf_stats
.siga_ins
, 0);
3705 atomic64_set(&perf_stats
.siga_syncs
, 0);
3706 atomic64_set(&perf_stats
.pcis
, 0);
3707 atomic64_set(&perf_stats
.thinints
, 0);
3708 atomic64_set(&perf_stats
.fast_reqs
, 0);
3709 atomic64_set(&perf_stats
.outbound_cnt
, 0);
3710 atomic64_set(&perf_stats
.inbound_cnt
, 0);
3711 #else /* CONFIG_64BIT */
3712 atomic_set(&perf_stats
.tl_runs
, 0);
3713 atomic_set(&perf_stats
.outbound_tl_runs
, 0);
3714 atomic_set(&perf_stats
.inbound_tl_runs
, 0);
3715 atomic_set(&perf_stats
.inbound_tl_runs_resched
, 0);
3716 atomic_set(&perf_stats
.inbound_thin_tl_runs
, 0);
3717 atomic_set(&perf_stats
.inbound_thin_tl_runs_resched
, 0);
3718 atomic_set(&perf_stats
.siga_outs
, 0);
3719 atomic_set(&perf_stats
.siga_ins
, 0);
3720 atomic_set(&perf_stats
.siga_syncs
, 0);
3721 atomic_set(&perf_stats
.pcis
, 0);
3722 atomic_set(&perf_stats
.thinints
, 0);
3723 atomic_set(&perf_stats
.fast_reqs
, 0);
3724 atomic_set(&perf_stats
.outbound_cnt
, 0);
3725 atomic_set(&perf_stats
.inbound_cnt
, 0);
3726 #endif /* CONFIG_64BIT */
3729 QDIO_PRINT_WARN("QDIO performance_stats: write 0 or 1 to this file!\n");
3735 static BUS_ATTR(qdio_performance_stats
, 0644, qdio_performance_stats_show
,
3736 qdio_performance_stats_store
);
3739 tiqdio_register_thinints(void)
3742 register_thinint_result
=
3743 s390_register_adapter_interrupt(&tiqdio_thinint_handler
);
3744 if (register_thinint_result
) {
3745 sprintf(dbf_text
,"regthn%x",(register_thinint_result
&0xff));
3746 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3747 QDIO_PRINT_ERR("failed to register adapter handler " \
3748 "(rc=%i).\nAdapter interrupts might " \
3749 "not work. Continuing.\n",
3750 register_thinint_result
);
3755 tiqdio_unregister_thinints(void)
3757 if (!register_thinint_result
)
3758 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler
);
3762 qdio_get_qdio_memory(void)
3765 indicator_used
[0]=1;
3767 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
3768 indicator_used
[i
]=0;
3769 indicators
= kzalloc(sizeof(__u32
)*(INDICATORS_PER_CACHELINE
),
3777 qdio_release_qdio_memory(void)
3784 qdio_unregister_dbf_views(void)
3787 debug_unregister(qdio_dbf_setup
);
3789 debug_unregister(qdio_dbf_sbal
);
3791 debug_unregister(qdio_dbf_sense
);
3793 debug_unregister(qdio_dbf_trace
);
3794 #ifdef CONFIG_QDIO_DEBUG
3795 if (qdio_dbf_slsb_out
)
3796 debug_unregister(qdio_dbf_slsb_out
);
3797 if (qdio_dbf_slsb_in
)
3798 debug_unregister(qdio_dbf_slsb_in
);
3799 #endif /* CONFIG_QDIO_DEBUG */
3803 qdio_register_dbf_views(void)
3805 qdio_dbf_setup
=debug_register(QDIO_DBF_SETUP_NAME
,
3806 QDIO_DBF_SETUP_PAGES
,
3807 QDIO_DBF_SETUP_NR_AREAS
,
3808 QDIO_DBF_SETUP_LEN
);
3809 if (!qdio_dbf_setup
)
3811 debug_register_view(qdio_dbf_setup
,&debug_hex_ascii_view
);
3812 debug_set_level(qdio_dbf_setup
,QDIO_DBF_SETUP_LEVEL
);
3814 qdio_dbf_sbal
=debug_register(QDIO_DBF_SBAL_NAME
,
3815 QDIO_DBF_SBAL_PAGES
,
3816 QDIO_DBF_SBAL_NR_AREAS
,
3821 debug_register_view(qdio_dbf_sbal
,&debug_hex_ascii_view
);
3822 debug_set_level(qdio_dbf_sbal
,QDIO_DBF_SBAL_LEVEL
);
3824 qdio_dbf_sense
=debug_register(QDIO_DBF_SENSE_NAME
,
3825 QDIO_DBF_SENSE_PAGES
,
3826 QDIO_DBF_SENSE_NR_AREAS
,
3827 QDIO_DBF_SENSE_LEN
);
3828 if (!qdio_dbf_sense
)
3831 debug_register_view(qdio_dbf_sense
,&debug_hex_ascii_view
);
3832 debug_set_level(qdio_dbf_sense
,QDIO_DBF_SENSE_LEVEL
);
3834 qdio_dbf_trace
=debug_register(QDIO_DBF_TRACE_NAME
,
3835 QDIO_DBF_TRACE_PAGES
,
3836 QDIO_DBF_TRACE_NR_AREAS
,
3837 QDIO_DBF_TRACE_LEN
);
3838 if (!qdio_dbf_trace
)
3841 debug_register_view(qdio_dbf_trace
,&debug_hex_ascii_view
);
3842 debug_set_level(qdio_dbf_trace
,QDIO_DBF_TRACE_LEVEL
);
3844 #ifdef CONFIG_QDIO_DEBUG
3845 qdio_dbf_slsb_out
=debug_register(QDIO_DBF_SLSB_OUT_NAME
,
3846 QDIO_DBF_SLSB_OUT_PAGES
,
3847 QDIO_DBF_SLSB_OUT_NR_AREAS
,
3848 QDIO_DBF_SLSB_OUT_LEN
);
3849 if (!qdio_dbf_slsb_out
)
3851 debug_register_view(qdio_dbf_slsb_out
,&debug_hex_ascii_view
);
3852 debug_set_level(qdio_dbf_slsb_out
,QDIO_DBF_SLSB_OUT_LEVEL
);
3854 qdio_dbf_slsb_in
=debug_register(QDIO_DBF_SLSB_IN_NAME
,
3855 QDIO_DBF_SLSB_IN_PAGES
,
3856 QDIO_DBF_SLSB_IN_NR_AREAS
,
3857 QDIO_DBF_SLSB_IN_LEN
);
3858 if (!qdio_dbf_slsb_in
)
3860 debug_register_view(qdio_dbf_slsb_in
,&debug_hex_ascii_view
);
3861 debug_set_level(qdio_dbf_slsb_in
,QDIO_DBF_SLSB_IN_LEVEL
);
3862 #endif /* CONFIG_QDIO_DEBUG */
3865 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3866 qdio_unregister_dbf_views();
3870 static void *qdio_mempool_alloc(gfp_t gfp_mask
, void *size
)
3872 return (void *) get_zeroed_page(gfp_mask
|GFP_DMA
);
3875 static void qdio_mempool_free(void *element
, void *size
)
3877 free_page((unsigned long) element
);
3886 printk("qdio: loading %s\n",version
);
3888 res
=qdio_get_qdio_memory();
3892 qdio_q_cache
= kmem_cache_create("qdio_q", sizeof(struct qdio_q
),
3894 if (!qdio_q_cache
) {
3895 qdio_release_qdio_memory();
3899 res
= qdio_register_dbf_views();
3901 kmem_cache_destroy(qdio_q_cache
);
3902 qdio_release_qdio_memory();
3906 QDIO_DBF_TEXT0(0,setup
,"initQDIO");
3907 res
= bus_create_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3909 memset((void*)&perf_stats
,0,sizeof(perf_stats
));
3910 QDIO_DBF_TEXT0(0,setup
,"perfstat");
3912 QDIO_DBF_HEX0(0,setup
,&ptr
,sizeof(void*));
3914 qdio_add_procfs_entry();
3916 qdio_mempool_scssc
= mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS
,
3918 qdio_mempool_free
, NULL
);
3920 if (tiqdio_check_chsc_availability())
3921 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3923 tiqdio_register_thinints();
3931 tiqdio_unregister_thinints();
3932 qdio_remove_procfs_entry();
3933 qdio_release_qdio_memory();
3934 qdio_unregister_dbf_views();
3935 mempool_destroy(qdio_mempool_scssc
);
3936 kmem_cache_destroy(qdio_q_cache
);
3937 bus_remove_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3938 printk("qdio: %s: module removed\n",version
);
3941 module_init(init_QDIO
);
3942 module_exit(cleanup_QDIO
);
3944 EXPORT_SYMBOL(qdio_allocate
);
3945 EXPORT_SYMBOL(qdio_establish
);
3946 EXPORT_SYMBOL(qdio_initialize
);
3947 EXPORT_SYMBOL(qdio_activate
);
3948 EXPORT_SYMBOL(do_QDIO
);
3949 EXPORT_SYMBOL(qdio_shutdown
);
3950 EXPORT_SYMBOL(qdio_free
);
3951 EXPORT_SYMBOL(qdio_cleanup
);
3952 EXPORT_SYMBOL(qdio_synchronize
);