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 <cohuck@de.ibm.com>
12 * Restriction: only 63 iqdio subchannels would have its own indicator,
13 * after that, subsequent subchannels share one indicator
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2, or (at your option)
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 #include <linux/config.h>
34 #include <linux/module.h>
35 #include <linux/init.h>
37 #include <linux/slab.h>
38 #include <linux/kernel.h>
39 #include <linux/proc_fs.h>
40 #include <linux/timer.h>
42 #include <asm/ccwdev.h>
44 #include <asm/atomic.h>
45 #include <asm/semaphore.h>
46 #include <asm/timex.h>
48 #include <asm/debug.h>
59 #define VERSION_QDIO_C "$Revision: 1.113 $"
61 /****************** MODULE PARAMETER VARIABLES ********************/
62 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
63 MODULE_DESCRIPTION("QDIO base support version 2, " \
64 "Copyright 2000 IBM Corporation");
65 MODULE_LICENSE("GPL");
67 /******************** HERE WE GO ***********************************/
69 static const char version
[] = "QDIO base support version 2 ("
70 VERSION_QDIO_C
"/" VERSION_QDIO_H
"/" VERSION_CIO_QDIO_H
")";
72 #ifdef QDIO_PERFORMANCE_STATS
73 static int proc_perf_file_registration
;
74 static unsigned long i_p_c
, i_p_nc
, o_p_c
, o_p_nc
, ii_p_c
, ii_p_nc
;
75 static struct qdio_perf_stats perf_stats
;
76 #endif /* QDIO_PERFORMANCE_STATS */
78 static int hydra_thinints
;
79 static int is_passthrough
= 0;
82 static int indicator_used
[INDICATORS_PER_CACHELINE
];
83 static __u32
* volatile indicators
;
84 static __u32
volatile spare_indicator
;
85 static atomic_t spare_indicator_usecount
;
87 static debug_info_t
*qdio_dbf_setup
;
88 static debug_info_t
*qdio_dbf_sbal
;
89 static debug_info_t
*qdio_dbf_trace
;
90 static debug_info_t
*qdio_dbf_sense
;
91 #ifdef CONFIG_QDIO_DEBUG
92 static debug_info_t
*qdio_dbf_slsb_out
;
93 static debug_info_t
*qdio_dbf_slsb_in
;
94 #endif /* CONFIG_QDIO_DEBUG */
97 static volatile struct qdio_q
*tiq_list
=NULL
; /* volatile as it could change
98 during a while loop */
99 static DEFINE_SPINLOCK(ttiq_list_lock
);
100 static int register_thinint_result
;
101 static void tiqdio_tl(unsigned long);
102 static DECLARE_TASKLET(tiqdio_tasklet
,tiqdio_tl
,0);
104 /* not a macro, as one of the arguments is atomic_read */
106 qdio_min(int a
,int b
)
114 /***************** SCRUBBER HELPER ROUTINES **********************/
117 qdio_get_micros(void)
119 return (get_clock() >> 10); /* time>>12 is microseconds */
123 * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
124 * the q in any case, so that we'll not be interrupted when we are in
125 * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
126 * ever works (last famous words)
129 qdio_reserve_q(struct qdio_q
*q
)
131 return atomic_add_return(1,&q
->use_count
) - 1;
135 qdio_release_q(struct qdio_q
*q
)
137 atomic_dec(&q
->use_count
);
142 qdio_check_ccq(struct qdio_q
*q
, unsigned int ccq
)
146 if (ccq
== 0 || ccq
== 32 || ccq
== 96)
150 /*notify devices immediately*/
151 sprintf(dbf_text
,"%d", ccq
);
152 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
155 /* EQBS: extract buffer states */
157 qdio_do_eqbs(struct qdio_q
*q
, unsigned char *state
,
158 unsigned int *start
, unsigned int *cnt
)
160 struct qdio_irq
*irq
;
161 unsigned int tmp_cnt
, q_no
, ccq
;
167 irq
= (struct qdio_irq
*)q
->irq_ptr
;
170 q_no
+= irq
->no_input_qs
;
171 ccq
= do_eqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
172 rc
= qdio_check_ccq(q
, ccq
);
174 QDIO_DBF_TEXT2(1,trace
,"eqberr");
175 sprintf(dbf_text
,"%2x,%2x,%d,%d",tmp_cnt
, *cnt
, ccq
, q_no
);
176 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
177 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
178 QDIO_STATUS_LOOK_FOR_ERROR
,
179 0, 0, 0, -1, -1, q
->int_parm
);
182 return (tmp_cnt
- *cnt
);
185 /* SQBS: set buffer states */
187 qdio_do_sqbs(struct qdio_q
*q
, unsigned char state
,
188 unsigned int *start
, unsigned int *cnt
)
190 struct qdio_irq
*irq
;
191 unsigned int tmp_cnt
, q_no
, ccq
;
197 irq
= (struct qdio_irq
*)q
->irq_ptr
;
200 q_no
+= irq
->no_input_qs
;
201 ccq
= do_sqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
202 rc
= qdio_check_ccq(q
, ccq
);
204 QDIO_DBF_TEXT3(1,trace
,"sqberr");
205 sprintf(dbf_text
,"%2x,%2x,%d,%d",tmp_cnt
,*cnt
,ccq
,q_no
);
206 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
207 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
208 QDIO_STATUS_LOOK_FOR_ERROR
,
209 0, 0, 0, -1, -1, q
->int_parm
);
212 return (tmp_cnt
- *cnt
);
216 qdio_set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
217 unsigned char state
, unsigned int *count
)
220 struct qdio_irq
*irq
;
222 irq
= (struct qdio_irq
*)q
->irq_ptr
;
223 if (!irq
->is_qebsm
) {
224 slsb
= (char *)&q
->slsb
.acc
.val
[(*bufno
)];
228 return qdio_do_sqbs(q
, state
, bufno
, count
);
231 #ifdef CONFIG_QDIO_DEBUG
233 qdio_trace_slsb(struct qdio_q
*q
)
235 if (q
->queue_type
==QDIO_TRACE_QTYPE
) {
237 QDIO_DBF_HEX2(0,slsb_in
,&q
->slsb
,
238 QDIO_MAX_BUFFERS_PER_Q
);
240 QDIO_DBF_HEX2(0,slsb_out
,&q
->slsb
,
241 QDIO_MAX_BUFFERS_PER_Q
);
247 set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
248 unsigned char state
, unsigned int *count
)
251 #ifdef CONFIG_QDIO_DEBUG
254 rc
= qdio_set_slsb(q
, bufno
, state
, count
);
255 #ifdef CONFIG_QDIO_DEBUG
261 qdio_siga_sync(struct qdio_q
*q
, unsigned int gpr2
,
266 QDIO_DBF_TEXT4(0,trace
,"sigasync");
267 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
269 #ifdef QDIO_PERFORMANCE_STATS
270 perf_stats
.siga_syncs
++;
271 #endif /* QDIO_PERFORMANCE_STATS */
273 cc
= do_siga_sync(q
->schid
, gpr2
, gpr3
);
275 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
281 qdio_siga_sync_q(struct qdio_q
*q
)
284 return qdio_siga_sync(q
, 0, q
->mask
);
285 return qdio_siga_sync(q
, q
->mask
, 0);
289 __do_siga_output(struct qdio_q
*q
, unsigned int *busy_bit
)
291 struct qdio_irq
*irq
;
295 irq
= (struct qdio_irq
*) q
->irq_ptr
;
297 schid
= *((u32
*)&q
->schid
);
299 schid
= irq
->sch_token
;
302 return do_siga_output(schid
, q
->mask
, busy_bit
, fc
);
306 * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
307 * an access exception
310 qdio_siga_output(struct qdio_q
*q
)
316 #ifdef QDIO_PERFORMANCE_STATS
317 perf_stats
.siga_outs
++;
318 #endif /* QDIO_PERFORMANCE_STATS */
320 QDIO_DBF_TEXT4(0,trace
,"sigaout");
321 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
324 cc
= __do_siga_output(q
, &busy_bit
);
325 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
326 if ((cc
==2) && (busy_bit
) && (q
->is_iqdio_q
)) {
329 if ((NOW
-start_time
)>QDIO_BUSY_BIT_PATIENCE
)
335 if ((cc
==2) && (busy_bit
))
336 cc
|= QDIO_SIGA_ERROR_B_BIT_SET
;
339 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
345 qdio_siga_input(struct qdio_q
*q
)
349 QDIO_DBF_TEXT4(0,trace
,"sigain");
350 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
352 #ifdef QDIO_PERFORMANCE_STATS
353 perf_stats
.siga_ins
++;
354 #endif /* QDIO_PERFORMANCE_STATS */
356 cc
= do_siga_input(q
->schid
, q
->mask
);
359 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
364 /* locked by the locks in qdio_activate and qdio_cleanup */
366 qdio_get_indicator(void)
370 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
371 if (!indicator_used
[i
]) {
375 atomic_inc(&spare_indicator_usecount
);
376 return (__u32
* volatile) &spare_indicator
;
379 /* locked by the locks in qdio_activate and qdio_cleanup */
381 qdio_put_indicator(__u32
*addr
)
385 if ( (addr
) && (addr
!=&spare_indicator
) ) {
389 if (addr
== &spare_indicator
)
390 atomic_dec(&spare_indicator_usecount
);
394 tiqdio_clear_summary_bit(__u32
*location
)
396 QDIO_DBF_TEXT5(0,trace
,"clrsummb");
397 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
403 tiqdio_set_summary_bit(__u32
*location
)
405 QDIO_DBF_TEXT5(0,trace
,"setsummb");
406 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
412 tiqdio_sched_tl(void)
414 tasklet_hi_schedule(&tiqdio_tasklet
);
418 qdio_mark_tiq(struct qdio_q
*q
)
422 QDIO_DBF_TEXT4(0,trace
,"mark iq");
423 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
425 spin_lock_irqsave(&ttiq_list_lock
,flags
);
426 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
432 if ((q
->list_prev
) || (q
->list_next
))
440 q
->list_next
=tiq_list
;
441 q
->list_prev
=tiq_list
->list_prev
;
442 tiq_list
->list_prev
->list_next
=q
;
443 tiq_list
->list_prev
=q
;
445 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
447 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
451 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
456 qdio_mark_q(struct qdio_q
*q
)
458 QDIO_DBF_TEXT4(0,trace
,"mark q");
459 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
461 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
464 tasklet_schedule(&q
->tasklet
);
468 qdio_stop_polling(struct qdio_q
*q
)
470 #ifdef QDIO_USE_PROCESSING_STATE
471 unsigned int tmp
, gsf
, count
= 1;
472 unsigned char state
= 0;
473 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
475 if (!atomic_swap(&q
->polling
,0))
478 QDIO_DBF_TEXT4(0,trace
,"stoppoll");
479 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
481 /* show the card that we are not polling anymore */
485 tmp
= gsf
= GET_SAVED_FRONTIER(q
);
486 tmp
= ((tmp
+ QDIO_MAX_BUFFERS_PER_Q
-1) & (QDIO_MAX_BUFFERS_PER_Q
-1) );
487 set_slsb(q
, &tmp
, SLSB_P_INPUT_NOT_INIT
, &count
);
490 * we don't issue this SYNC_MEMORY, as we trust Rick T and
491 * moreover will not use the PROCESSING state under VM, so
492 * q->polling was 0 anyway
497 qdio_do_eqbs(q
, &state
, &gsf
, &count
);
499 state
= q
->slsb
.acc
.val
[gsf
];
500 if (state
!= SLSB_P_INPUT_PRIMED
)
503 * set our summary bit again, as otherwise there is a
504 * small window we can miss between resetting it and
505 * checking for PRIMED state
508 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
511 #else /* QDIO_USE_PROCESSING_STATE */
513 #endif /* QDIO_USE_PROCESSING_STATE */
517 * see the comment in do_QDIO and before qdio_reserve_q about the
518 * sophisticated locking outside of unmark_q, so that we don't need to
519 * disable the interrupts :-)
522 qdio_unmark_q(struct qdio_q
*q
)
526 QDIO_DBF_TEXT4(0,trace
,"unmark q");
527 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
529 if ((!q
->list_prev
)||(!q
->list_next
))
532 if ((q
->is_thinint_q
)&&(q
->is_input_q
)) {
534 spin_lock_irqsave(&ttiq_list_lock
,flags
);
535 /* in case cleanup has done this already and simultanously
536 * qdio_unmark_q is called from the interrupt handler, we've
537 * got to check this in this specific case again */
538 if ((!q
->list_prev
)||(!q
->list_next
))
540 if (q
->list_next
==q
) {
541 /* q was the only interesting q */
546 q
->list_next
->list_prev
=q
->list_prev
;
547 q
->list_prev
->list_next
=q
->list_next
;
548 tiq_list
=q
->list_next
;
553 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
557 static inline unsigned long
558 tiqdio_clear_global_summary(void)
562 QDIO_DBF_TEXT5(0,trace
,"clrglobl");
564 time
= do_clear_global_summary();
566 QDIO_DBF_HEX5(0,trace
,&time
,sizeof(unsigned long));
572 /************************* OUTBOUND ROUTINES *******************************/
574 qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q
*q
)
576 struct qdio_irq
*irq
;
578 unsigned int cnt
, count
, ftc
;
580 irq
= (struct qdio_irq
*) q
->irq_ptr
;
581 if ((!q
->is_iqdio_q
) && (!q
->hydra_gives_outbound_pcis
))
584 ftc
= q
->first_to_check
;
585 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
586 (QDIO_MAX_BUFFERS_PER_Q
-1));
588 return q
->first_to_check
;
589 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
591 return q
->first_to_check
;
593 case SLSB_P_OUTPUT_ERROR
:
594 QDIO_DBF_TEXT3(0,trace
,"outperr");
595 atomic_sub(cnt
, &q
->number_of_buffers_used
);
597 q
->error_status_flags
|=
598 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
599 q
->qdio_error
= SLSB_P_OUTPUT_ERROR
;
600 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
601 q
->first_to_check
= ftc
;
603 case SLSB_P_OUTPUT_EMPTY
:
604 QDIO_DBF_TEXT5(0,trace
,"outpempt");
605 atomic_sub(cnt
, &q
->number_of_buffers_used
);
606 q
->first_to_check
= ftc
;
608 case SLSB_CU_OUTPUT_PRIMED
:
609 /* all buffers primed */
610 QDIO_DBF_TEXT5(0,trace
,"outpprim");
615 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
616 return q
->first_to_check
;
620 qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q
*q
)
622 struct qdio_irq
*irq
;
624 int tmp
, ftc
, count
, cnt
;
628 irq
= (struct qdio_irq
*) q
->irq_ptr
;
629 ftc
= q
->first_to_check
;
630 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
631 (QDIO_MAX_BUFFERS_PER_Q
-1));
633 return q
->first_to_check
;
634 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
636 return q
->first_to_check
;
638 case SLSB_P_INPUT_ERROR
:
639 #ifdef CONFIG_QDIO_DEBUG
640 QDIO_DBF_TEXT3(1,trace
,"inperr");
641 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
642 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
643 #endif /* CONFIG_QDIO_DEBUG */
645 q
->error_status_flags
|=
646 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
647 q
->qdio_error
= SLSB_P_INPUT_ERROR
;
648 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
649 atomic_sub(cnt
, &q
->number_of_buffers_used
);
650 q
->first_to_check
= ftc
;
652 case SLSB_P_INPUT_PRIMED
:
653 QDIO_DBF_TEXT3(0,trace
,"inptprim");
654 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
655 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
657 ftc
= q
->first_to_check
;
658 #ifdef QDIO_USE_PROCESSING_STATE
661 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
666 tmp
+= set_slsb(q
, &ftc
,
667 SLSB_P_INPUT_PROCESSING
, &cnt
);
668 atomic_set(&q
->polling
, 1);
670 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
672 atomic_sub(tmp
, &q
->number_of_buffers_used
);
673 q
->first_to_check
= ftc
;
675 case SLSB_CU_INPUT_EMPTY
:
676 case SLSB_P_INPUT_NOT_INIT
:
677 case SLSB_P_INPUT_PROCESSING
:
678 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
683 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
684 return q
->first_to_check
;
688 qdio_get_outbound_buffer_frontier(struct qdio_q
*q
)
690 struct qdio_irq
*irq
;
692 unsigned int count
= 1;
693 int first_not_to_check
, f
, f_mod_no
;
696 QDIO_DBF_TEXT4(0,trace
,"getobfro");
697 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
699 irq
= (struct qdio_irq
*) q
->irq_ptr
;
701 return qdio_qebsm_get_outbound_buffer_frontier(q
);
703 slsb
=&q
->slsb
.acc
.val
[0];
704 f_mod_no
=f
=q
->first_to_check
;
706 * f points to already processed elements, so f+no_used is correct...
707 * ... but: we don't check 128 buffers, as otherwise
708 * qdio_has_outbound_q_moved would return 0
710 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
711 (QDIO_MAX_BUFFERS_PER_Q
-1));
713 if ((!q
->is_iqdio_q
)&&(!q
->hydra_gives_outbound_pcis
))
717 if (f
==first_not_to_check
)
720 switch(slsb
[f_mod_no
]) {
722 /* the adapter has not fetched the output yet */
723 case SLSB_CU_OUTPUT_PRIMED
:
724 QDIO_DBF_TEXT5(0,trace
,"outpprim");
727 /* the adapter got it */
728 case SLSB_P_OUTPUT_EMPTY
:
729 atomic_dec(&q
->number_of_buffers_used
);
731 f_mod_no
=f
&(QDIO_MAX_BUFFERS_PER_Q
-1);
732 QDIO_DBF_TEXT5(0,trace
,"outpempt");
735 case SLSB_P_OUTPUT_ERROR
:
736 QDIO_DBF_TEXT3(0,trace
,"outperr");
737 sprintf(dbf_text
,"%x-%x-%x",f_mod_no
,
738 q
->sbal
[f_mod_no
]->element
[14].sbalf
.value
,
739 q
->sbal
[f_mod_no
]->element
[15].sbalf
.value
);
740 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
741 QDIO_DBF_HEX2(1,sbal
,q
->sbal
[f_mod_no
],256);
743 /* kind of process the buffer */
744 set_slsb(q
, &f_mod_no
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
747 * we increment the frontier, as this buffer
748 * was processed obviously
750 atomic_dec(&q
->number_of_buffers_used
);
751 f_mod_no
=(f_mod_no
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
754 q
->error_status_flags
|=
755 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
756 q
->qdio_error
=SLSB_P_OUTPUT_ERROR
;
757 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
763 QDIO_DBF_TEXT5(0,trace
,"outpni");
766 return (q
->first_to_check
=f_mod_no
);
769 /* all buffers are processed */
771 qdio_is_outbound_q_done(struct qdio_q
*q
)
774 #ifdef CONFIG_QDIO_DEBUG
778 no_used
=atomic_read(&q
->number_of_buffers_used
);
780 #ifdef CONFIG_QDIO_DEBUG
782 sprintf(dbf_text
,"oqisnt%02x",no_used
);
783 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
785 QDIO_DBF_TEXT4(0,trace
,"oqisdone");
787 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
788 #endif /* CONFIG_QDIO_DEBUG */
793 qdio_has_outbound_q_moved(struct qdio_q
*q
)
797 i
=qdio_get_outbound_buffer_frontier(q
);
799 if ( (i
!=GET_SAVED_FRONTIER(q
)) ||
800 (q
->error_status_flags
&QDIO_STATUS_LOOK_FOR_ERROR
) ) {
802 QDIO_DBF_TEXT4(0,trace
,"oqhasmvd");
803 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
806 QDIO_DBF_TEXT4(0,trace
,"oqhsntmv");
807 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
813 qdio_kick_outbound_q(struct qdio_q
*q
)
816 #ifdef CONFIG_QDIO_DEBUG
819 QDIO_DBF_TEXT4(0,trace
,"kickoutq");
820 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
821 #endif /* CONFIG_QDIO_DEBUG */
826 /* here's the story with cc=2 and busy bit set (thanks, Rick):
827 * VM's CP could present us cc=2 and busy bit set on SIGA-write
828 * during reconfiguration of their Guest LAN (only in HIPERS mode,
829 * QDIO mode is asynchronous -- cc=2 and busy bit there will take
830 * the queues down immediately; and not being under VM we have a
831 * problem on cc=2 and busy bit set right away).
833 * Therefore qdio_siga_output will try for a short time constantly,
834 * if such a condition occurs. If it doesn't change, it will
835 * increase the busy_siga_counter and save the timestamp, and
836 * schedule the queue for later processing (via mark_q, using the
837 * queue tasklet). __qdio_outbound_processing will check out the
838 * counter. If non-zero, it will call qdio_kick_outbound_q as often
839 * as the value of the counter. This will attempt further SIGA
840 * instructions. For each successful SIGA, the counter is
841 * decreased, for failing SIGAs the counter remains the same, after
843 * After some time of no movement, qdio_kick_outbound_q will
844 * finally fail and reflect corresponding error codes to call
845 * the upper layer module and have it take the queues down.
847 * Note that this is a change from the original HiperSockets design
848 * (saying cc=2 and busy bit means take the queues down), but in
849 * these days Guest LAN didn't exist... excessive cc=2 with busy bit
850 * conditions will still take the queues down, but the threshold is
851 * higher due to the Guest LAN environment.
855 result
=qdio_siga_output(q
);
859 /* went smooth this time, reset timestamp */
860 #ifdef CONFIG_QDIO_DEBUG
861 QDIO_DBF_TEXT3(0,trace
,"cc2reslv");
862 sprintf(dbf_text
,"%4x%2x%2x",q
->schid
.sch_no
,q
->q_no
,
863 atomic_read(&q
->busy_siga_counter
));
864 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
865 #endif /* CONFIG_QDIO_DEBUG */
866 q
->timing
.busy_start
=0;
868 case (2|QDIO_SIGA_ERROR_B_BIT_SET
):
869 /* cc=2 and busy bit: */
870 atomic_inc(&q
->busy_siga_counter
);
872 /* if the last siga was successful, save
874 if (!q
->timing
.busy_start
)
875 q
->timing
.busy_start
=NOW
;
877 /* if we're in time, don't touch error_status_flags
879 if (NOW
-q
->timing
.busy_start
<QDIO_BUSY_BIT_GIVE_UP
) {
883 QDIO_DBF_TEXT2(0,trace
,"cc2REPRT");
884 #ifdef CONFIG_QDIO_DEBUG
885 sprintf(dbf_text
,"%4x%2x%2x",q
->schid
.sch_no
,q
->q_no
,
886 atomic_read(&q
->busy_siga_counter
));
887 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
888 #endif /* CONFIG_QDIO_DEBUG */
889 /* else fallthrough and report error */
891 /* for plain cc=1, 2 or 3: */
893 q
->error_status_flags
|=
894 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
895 q
->error_status_flags
|=
896 QDIO_STATUS_LOOK_FOR_ERROR
;
897 q
->siga_error
=result
;
902 qdio_kick_outbound_handler(struct qdio_q
*q
)
904 int start
, end
, real_end
, count
;
905 #ifdef CONFIG_QDIO_DEBUG
909 start
= q
->first_element_to_kick
;
910 /* last_move_ftc was just updated */
911 real_end
= GET_SAVED_FRONTIER(q
);
912 end
= (real_end
+QDIO_MAX_BUFFERS_PER_Q
-1)&
913 (QDIO_MAX_BUFFERS_PER_Q
-1);
914 count
= (end
+QDIO_MAX_BUFFERS_PER_Q
+1-start
)&
915 (QDIO_MAX_BUFFERS_PER_Q
-1);
917 #ifdef CONFIG_QDIO_DEBUG
918 QDIO_DBF_TEXT4(0,trace
,"kickouth");
919 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
921 sprintf(dbf_text
,"s=%2xc=%2x",start
,count
);
922 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
923 #endif /* CONFIG_QDIO_DEBUG */
925 if (q
->state
==QDIO_IRQ_STATE_ACTIVE
)
926 q
->handler(q
->cdev
,QDIO_STATUS_OUTBOUND_INT
|
927 q
->error_status_flags
,
928 q
->qdio_error
,q
->siga_error
,q
->q_no
,start
,count
,
931 /* for the next time: */
932 q
->first_element_to_kick
=real_end
;
935 q
->error_status_flags
=0;
939 __qdio_outbound_processing(struct qdio_q
*q
)
943 QDIO_DBF_TEXT4(0,trace
,"qoutproc");
944 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
946 if (unlikely(qdio_reserve_q(q
))) {
948 #ifdef QDIO_PERFORMANCE_STATS
950 #endif /* QDIO_PERFORMANCE_STATS */
951 /* as we're sissies, we'll check next time */
952 if (likely(!atomic_read(&q
->is_in_shutdown
))) {
954 QDIO_DBF_TEXT4(0,trace
,"busy,agn");
958 #ifdef QDIO_PERFORMANCE_STATS
960 perf_stats
.tl_runs
++;
961 #endif /* QDIO_PERFORMANCE_STATS */
963 /* see comment in qdio_kick_outbound_q */
964 siga_attempts
=atomic_read(&q
->busy_siga_counter
);
965 while (siga_attempts
) {
966 atomic_dec(&q
->busy_siga_counter
);
967 qdio_kick_outbound_q(q
);
971 if (qdio_has_outbound_q_moved(q
))
972 qdio_kick_outbound_handler(q
);
976 * for asynchronous queues, we better check, if the fill
977 * level is too high. for synchronous queues, the fill
978 * level will never be that high.
980 if (atomic_read(&q
->number_of_buffers_used
)>
981 IQDIO_FILL_LEVEL_TO_POLL
)
984 } else if (!q
->hydra_gives_outbound_pcis
)
985 if (!qdio_is_outbound_q_done(q
))
992 qdio_outbound_processing(struct qdio_q
*q
)
994 __qdio_outbound_processing(q
);
997 /************************* INBOUND ROUTINES *******************************/
1001 qdio_get_inbound_buffer_frontier(struct qdio_q
*q
)
1003 struct qdio_irq
*irq
;
1005 volatile char *slsb
;
1006 unsigned int count
= 1;
1007 int first_not_to_check
;
1008 #ifdef CONFIG_QDIO_DEBUG
1010 #endif /* CONFIG_QDIO_DEBUG */
1011 #ifdef QDIO_USE_PROCESSING_STATE
1012 int last_position
=-1;
1013 #endif /* QDIO_USE_PROCESSING_STATE */
1015 QDIO_DBF_TEXT4(0,trace
,"getibfro");
1016 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1018 irq
= (struct qdio_irq
*) q
->irq_ptr
;
1020 return qdio_qebsm_get_inbound_buffer_frontier(q
);
1022 slsb
=&q
->slsb
.acc
.val
[0];
1023 f_mod_no
=f
=q
->first_to_check
;
1025 * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1028 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
1029 (QDIO_MAX_BUFFERS_PER_Q
-1));
1032 * we don't use this one, as a PCI or we after a thin interrupt
1033 * will sync the queues
1038 f_mod_no
=f
&(QDIO_MAX_BUFFERS_PER_Q
-1);
1039 if (f
==first_not_to_check
)
1041 switch (slsb
[f_mod_no
]) {
1043 /* CU_EMPTY means frontier is reached */
1044 case SLSB_CU_INPUT_EMPTY
:
1045 QDIO_DBF_TEXT5(0,trace
,"inptempt");
1048 /* P_PRIMED means set slsb to P_PROCESSING and move on */
1049 case SLSB_P_INPUT_PRIMED
:
1050 QDIO_DBF_TEXT5(0,trace
,"inptprim");
1052 #ifdef QDIO_USE_PROCESSING_STATE
1054 * as soon as running under VM, polling the input queues will
1055 * kill VM in terms of CP overhead
1058 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1060 /* set the previous buffer to NOT_INIT. The current
1061 * buffer will be set to PROCESSING at the end of
1062 * this function to avoid further interrupts. */
1063 if (last_position
>=0)
1064 set_slsb(q
, &last_position
,
1065 SLSB_P_INPUT_NOT_INIT
, &count
);
1066 atomic_set(&q
->polling
,1);
1067 last_position
=f_mod_no
;
1069 #else /* QDIO_USE_PROCESSING_STATE */
1070 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1071 #endif /* QDIO_USE_PROCESSING_STATE */
1073 * not needed, as the inbound queue will be synced on the next
1074 * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1078 atomic_dec(&q
->number_of_buffers_used
);
1081 case SLSB_P_INPUT_NOT_INIT
:
1082 case SLSB_P_INPUT_PROCESSING
:
1083 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
1086 /* P_ERROR means frontier is reached, break and report error */
1087 case SLSB_P_INPUT_ERROR
:
1088 #ifdef CONFIG_QDIO_DEBUG
1089 sprintf(dbf_text
,"inperr%2x",f_mod_no
);
1090 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
1091 #endif /* CONFIG_QDIO_DEBUG */
1092 QDIO_DBF_HEX2(1,sbal
,q
->sbal
[f_mod_no
],256);
1094 /* kind of process the buffer */
1095 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1098 q
->error_status_flags
|=
1099 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
1100 q
->qdio_error
=SLSB_P_INPUT_ERROR
;
1101 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
1103 /* we increment the frontier, as this buffer
1104 * was processed obviously */
1105 f_mod_no
=(f_mod_no
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1106 atomic_dec(&q
->number_of_buffers_used
);
1108 #ifdef QDIO_USE_PROCESSING_STATE
1110 #endif /* QDIO_USE_PROCESSING_STATE */
1114 /* everything else means frontier not changed (HALTED or so) */
1119 q
->first_to_check
=f_mod_no
;
1121 #ifdef QDIO_USE_PROCESSING_STATE
1122 if (last_position
>=0)
1123 set_slsb(q
, &last_position
, SLSB_P_INPUT_NOT_INIT
, &count
);
1124 #endif /* QDIO_USE_PROCESSING_STATE */
1126 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
1128 return q
->first_to_check
;
1132 qdio_has_inbound_q_moved(struct qdio_q
*q
)
1136 #ifdef QDIO_PERFORMANCE_STATS
1137 static int old_pcis
=0;
1138 static int old_thinints
=0;
1140 if ((old_pcis
==perf_stats
.pcis
)&&(old_thinints
==perf_stats
.thinints
))
1141 perf_stats
.start_time_inbound
=NOW
;
1143 old_pcis
=perf_stats
.pcis
;
1144 #endif /* QDIO_PERFORMANCE_STATS */
1146 i
=qdio_get_inbound_buffer_frontier(q
);
1147 if ( (i
!=GET_SAVED_FRONTIER(q
)) ||
1148 (q
->error_status_flags
&QDIO_STATUS_LOOK_FOR_ERROR
) ) {
1150 if ((!q
->siga_sync
)&&(!q
->hydra_gives_outbound_pcis
))
1153 QDIO_DBF_TEXT4(0,trace
,"inhasmvd");
1154 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1157 QDIO_DBF_TEXT4(0,trace
,"inhsntmv");
1158 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1163 /* means, no more buffers to be filled */
1165 tiqdio_is_inbound_q_done(struct qdio_q
*q
)
1168 unsigned int start_buf
, count
;
1169 unsigned char state
= 0;
1170 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1172 #ifdef CONFIG_QDIO_DEBUG
1176 no_used
=atomic_read(&q
->number_of_buffers_used
);
1178 /* propagate the change from 82 to 80 through VM */
1181 #ifdef CONFIG_QDIO_DEBUG
1183 sprintf(dbf_text
,"iqisnt%02x",no_used
);
1184 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1186 QDIO_DBF_TEXT4(0,trace
,"iniqisdo");
1188 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1189 #endif /* CONFIG_QDIO_DEBUG */
1195 /* we'll check for more primed buffers in qeth_stop_polling */
1197 if (irq
->is_qebsm
) {
1199 start_buf
= q
->first_to_check
;
1200 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1202 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1203 if (state
!= SLSB_P_INPUT_PRIMED
)
1205 * nothing more to do, if next buffer is not PRIMED.
1206 * note that we did a SYNC_MEMORY before, that there
1207 * has been a sychnronization.
1208 * we will return 0 below, as there is nothing to do
1209 * (stop_polling not necessary, as we have not been
1210 * using the PROCESSING state
1215 * ok, the next input buffer is primed. that means, that device state
1216 * change indicator and adapter local summary are set, so we will find
1218 * we will return 0 below, as there is nothing to do, except scheduling
1219 * ourselves for the next time.
1221 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1227 qdio_is_inbound_q_done(struct qdio_q
*q
)
1230 unsigned int start_buf
, count
;
1231 unsigned char state
= 0;
1232 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1234 #ifdef CONFIG_QDIO_DEBUG
1238 no_used
=atomic_read(&q
->number_of_buffers_used
);
1241 * we need that one for synchronization with the adapter, as it
1242 * does a kind of PCI avoidance
1247 QDIO_DBF_TEXT4(0,trace
,"inqisdnA");
1248 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1249 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1252 if (irq
->is_qebsm
) {
1254 start_buf
= q
->first_to_check
;
1255 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1257 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1258 if (state
== SLSB_P_INPUT_PRIMED
) {
1259 /* we got something to do */
1260 QDIO_DBF_TEXT4(0,trace
,"inqisntA");
1261 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1265 /* on VM, we don't poll, so the q is always done here */
1268 if (q
->hydra_gives_outbound_pcis
)
1272 * at this point we know, that inbound first_to_check
1273 * has (probably) not moved (see qdio_inbound_processing)
1275 if (NOW
>GET_SAVED_TIMESTAMP(q
)+q
->timing
.threshold
) {
1276 #ifdef CONFIG_QDIO_DEBUG
1277 QDIO_DBF_TEXT4(0,trace
,"inqisdon");
1278 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1279 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1280 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1281 #endif /* CONFIG_QDIO_DEBUG */
1284 #ifdef CONFIG_QDIO_DEBUG
1285 QDIO_DBF_TEXT4(0,trace
,"inqisntd");
1286 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1287 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1288 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1289 #endif /* CONFIG_QDIO_DEBUG */
1295 qdio_kick_inbound_handler(struct qdio_q
*q
)
1297 int count
, start
, end
, real_end
, i
;
1298 #ifdef CONFIG_QDIO_DEBUG
1302 QDIO_DBF_TEXT4(0,trace
,"kickinh");
1303 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1305 start
=q
->first_element_to_kick
;
1306 real_end
=q
->first_to_check
;
1307 end
=(real_end
+QDIO_MAX_BUFFERS_PER_Q
-1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1315 i
=(i
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1318 #ifdef CONFIG_QDIO_DEBUG
1319 sprintf(dbf_text
,"s=%2xc=%2x",start
,count
);
1320 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1321 #endif /* CONFIG_QDIO_DEBUG */
1323 if (likely(q
->state
==QDIO_IRQ_STATE_ACTIVE
))
1325 QDIO_STATUS_INBOUND_INT
|q
->error_status_flags
,
1326 q
->qdio_error
,q
->siga_error
,q
->q_no
,start
,count
,
1329 /* for the next time: */
1330 q
->first_element_to_kick
=real_end
;
1333 q
->error_status_flags
=0;
1335 #ifdef QDIO_PERFORMANCE_STATS
1336 perf_stats
.inbound_time
+=NOW
-perf_stats
.start_time_inbound
;
1337 perf_stats
.inbound_cnt
++;
1338 #endif /* QDIO_PERFORMANCE_STATS */
1342 __tiqdio_inbound_processing(struct qdio_q
*q
, int spare_ind_was_set
)
1344 struct qdio_irq
*irq_ptr
;
1348 QDIO_DBF_TEXT4(0,trace
,"iqinproc");
1349 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1352 * we first want to reserve the q, so that we know, that we don't
1353 * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1356 if (unlikely(qdio_reserve_q(q
))) {
1358 #ifdef QDIO_PERFORMANCE_STATS
1360 #endif /* QDIO_PERFORMANCE_STATS */
1362 * as we might just be about to stop polling, we make
1363 * sure that we check again at least once more
1368 #ifdef QDIO_PERFORMANCE_STATS
1370 #endif /* QDIO_PERFORMANCE_STATS */
1371 if (unlikely(atomic_read(&q
->is_in_shutdown
))) {
1377 * we reset spare_ind_was_set, when the queue does not use the
1380 if (spare_ind_was_set
)
1381 spare_ind_was_set
= (q
->dev_st_chg_ind
== &spare_indicator
);
1383 if (!(*(q
->dev_st_chg_ind
)) && !spare_ind_was_set
)
1386 * q->dev_st_chg_ind is the indicator, be it shared or not.
1387 * only clear it, if indicator is non-shared
1389 if (!spare_ind_was_set
)
1390 tiqdio_clear_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1392 if (q
->hydra_gives_outbound_pcis
) {
1393 if (!q
->siga_sync_done_on_thinints
) {
1395 } else if ((!q
->siga_sync_done_on_outb_tis
)&&
1396 (q
->hydra_gives_outbound_pcis
)) {
1397 SYNC_MEMORY_ALL_OUTB
;
1403 * maybe we have to do work on our outbound queues... at least
1404 * we have to check the outbound-int-capable thinint-capable
1407 if (q
->hydra_gives_outbound_pcis
) {
1408 irq_ptr
= (struct qdio_irq
*)q
->irq_ptr
;
1409 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1410 oq
= irq_ptr
->output_qs
[i
];
1411 #ifdef QDIO_PERFORMANCE_STATS
1412 perf_stats
.tl_runs
--;
1413 #endif /* QDIO_PERFORMANCE_STATS */
1414 if (!qdio_is_outbound_q_done(oq
))
1415 __qdio_outbound_processing(oq
);
1419 if (!qdio_has_inbound_q_moved(q
))
1422 qdio_kick_inbound_handler(q
);
1423 if (tiqdio_is_inbound_q_done(q
))
1424 if (!qdio_stop_polling(q
)) {
1426 * we set the flags to get into the stuff next time,
1427 * see also comment in qdio_stop_polling
1429 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1437 tiqdio_inbound_processing(struct qdio_q
*q
)
1439 __tiqdio_inbound_processing(q
, atomic_read(&spare_indicator_usecount
));
1443 __qdio_inbound_processing(struct qdio_q
*q
)
1447 QDIO_DBF_TEXT4(0,trace
,"qinproc");
1448 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1450 if (unlikely(qdio_reserve_q(q
))) {
1452 #ifdef QDIO_PERFORMANCE_STATS
1454 #endif /* QDIO_PERFORMANCE_STATS */
1455 /* as we're sissies, we'll check next time */
1456 if (likely(!atomic_read(&q
->is_in_shutdown
))) {
1458 QDIO_DBF_TEXT4(0,trace
,"busy,agn");
1462 #ifdef QDIO_PERFORMANCE_STATS
1464 perf_stats
.tl_runs
++;
1465 #endif /* QDIO_PERFORMANCE_STATS */
1468 if (qdio_has_inbound_q_moved(q
)) {
1469 qdio_kick_inbound_handler(q
);
1470 if (!qdio_stop_polling(q
)) {
1472 if (q_laps
<QDIO_Q_LAPS
)
1477 if (!qdio_is_inbound_q_done(q
))
1478 /* means poll time is not yet over */
1486 qdio_inbound_processing(struct qdio_q
*q
)
1488 __qdio_inbound_processing(q
);
1491 /************************* MAIN ROUTINES *******************************/
1493 #ifdef QDIO_USE_PROCESSING_STATE
1495 tiqdio_reset_processing_state(struct qdio_q
*q
, int q_laps
)
1503 * under VM, we have not used the PROCESSING state, so no
1504 * need to stop polling
1509 if (unlikely(qdio_reserve_q(q
))) {
1511 #ifdef QDIO_PERFORMANCE_STATS
1513 #endif /* QDIO_PERFORMANCE_STATS */
1515 * as we might just be about to stop polling, we make
1516 * sure that we check again at least once more
1520 * sanity -- we'd get here without setting the
1523 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1527 if (qdio_stop_polling(q
)) {
1531 if (q_laps
<QDIO_Q_LAPS
-1) {
1536 * we set the flags to get into the stuff
1537 * next time, see also comment in qdio_stop_polling
1539 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1545 #endif /* QDIO_USE_PROCESSING_STATE */
1548 tiqdio_inbound_checks(void)
1551 int spare_ind_was_set
=0;
1552 #ifdef QDIO_USE_PROCESSING_STATE
1554 #endif /* QDIO_USE_PROCESSING_STATE */
1556 QDIO_DBF_TEXT4(0,trace
,"iqdinbck");
1557 QDIO_DBF_TEXT5(0,trace
,"iqlocsum");
1559 #ifdef QDIO_USE_PROCESSING_STATE
1561 #endif /* QDIO_USE_PROCESSING_STATE */
1563 /* when the spare indicator is used and set, save that and clear it */
1564 if ((atomic_read(&spare_indicator_usecount
)) && spare_indicator
) {
1565 spare_ind_was_set
= 1;
1566 tiqdio_clear_summary_bit((__u32
*)&spare_indicator
);
1569 q
=(struct qdio_q
*)tiq_list
;
1573 __tiqdio_inbound_processing(q
, spare_ind_was_set
);
1574 q
=(struct qdio_q
*)q
->list_next
;
1575 } while (q
!=(struct qdio_q
*)tiq_list
);
1577 #ifdef QDIO_USE_PROCESSING_STATE
1578 q
=(struct qdio_q
*)tiq_list
;
1582 ret
= tiqdio_reset_processing_state(q
, q_laps
);
1589 q
= (struct qdio_q
*)q
->list_next
;
1595 } while (q
!=(struct qdio_q
*)tiq_list
);
1596 #endif /* QDIO_USE_PROCESSING_STATE */
1600 tiqdio_tl(unsigned long data
)
1602 QDIO_DBF_TEXT4(0,trace
,"iqdio_tl");
1604 #ifdef QDIO_PERFORMANCE_STATS
1605 perf_stats
.tl_runs
++;
1606 #endif /* QDIO_PERFORMANCE_STATS */
1608 tiqdio_inbound_checks();
1611 /********************* GENERAL HELPER_ROUTINES ***********************/
1614 qdio_release_irq_memory(struct qdio_irq
*irq_ptr
)
1618 for (i
=0;i
<QDIO_MAX_QUEUES_PER_IRQ
;i
++) {
1619 if (!irq_ptr
->input_qs
[i
])
1622 kfree(irq_ptr
->input_qs
[i
]->slib
);
1623 kfree(irq_ptr
->input_qs
[i
]);
1626 if (!irq_ptr
->output_qs
[i
])
1629 kfree(irq_ptr
->output_qs
[i
]->slib
);
1630 kfree(irq_ptr
->output_qs
[i
]);
1633 kfree(irq_ptr
->qdr
);
1638 qdio_set_impl_params(struct qdio_irq
*irq_ptr
,
1639 unsigned int qib_param_field_format
,
1640 /* pointer to 128 bytes or NULL, if no param field */
1641 unsigned char *qib_param_field
,
1642 /* pointer to no_queues*128 words of data or NULL */
1643 unsigned int no_input_qs
,
1644 unsigned int no_output_qs
,
1645 unsigned long *input_slib_elements
,
1646 unsigned long *output_slib_elements
)
1653 irq_ptr
->qib
.pfmt
=qib_param_field_format
;
1654 if (qib_param_field
)
1655 memcpy(irq_ptr
->qib
.parm
,qib_param_field
,
1656 QDIO_MAX_BUFFERS_PER_Q
);
1658 if (input_slib_elements
)
1659 for (i
=0;i
<no_input_qs
;i
++) {
1660 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1661 irq_ptr
->input_qs
[i
]->slib
->slibe
[j
].parms
=
1662 input_slib_elements
[
1663 i
*QDIO_MAX_BUFFERS_PER_Q
+j
];
1665 if (output_slib_elements
)
1666 for (i
=0;i
<no_output_qs
;i
++) {
1667 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1668 irq_ptr
->output_qs
[i
]->slib
->slibe
[j
].parms
=
1669 output_slib_elements
[
1670 i
*QDIO_MAX_BUFFERS_PER_Q
+j
];
1675 qdio_alloc_qs(struct qdio_irq
*irq_ptr
,
1676 int no_input_qs
, int no_output_qs
)
1682 for (i
=0;i
<no_input_qs
;i
++) {
1683 q
=kmalloc(sizeof(struct qdio_q
),GFP_KERNEL
);
1686 QDIO_PRINT_ERR("kmalloc of q failed!\n");
1690 memset(q
,0,sizeof(struct qdio_q
));
1692 q
->slib
=kmalloc(PAGE_SIZE
,GFP_KERNEL
);
1694 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1698 irq_ptr
->input_qs
[i
]=q
;
1701 for (i
=0;i
<no_output_qs
;i
++) {
1702 q
=kmalloc(sizeof(struct qdio_q
),GFP_KERNEL
);
1708 memset(q
,0,sizeof(struct qdio_q
));
1710 q
->slib
=kmalloc(PAGE_SIZE
,GFP_KERNEL
);
1712 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1716 irq_ptr
->output_qs
[i
]=q
;
1725 qdio_fill_qs(struct qdio_irq
*irq_ptr
, struct ccw_device
*cdev
,
1726 int no_input_qs
, int no_output_qs
,
1727 qdio_handler_t
*input_handler
,
1728 qdio_handler_t
*output_handler
,
1729 unsigned long int_parm
,int q_format
,
1730 unsigned long flags
,
1731 void **inbound_sbals_array
,
1732 void **outbound_sbals_array
)
1736 char dbf_text
[20]; /* see qdio_initialize */
1740 sprintf(dbf_text
,"qfqs%4x",cdev
->private->sch_no
);
1741 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1742 for (i
=0;i
<no_input_qs
;i
++) {
1743 q
=irq_ptr
->input_qs
[i
];
1745 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1746 sprintf(dbf_text
,"in-q%4x",i
);
1747 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1748 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1750 memset(q
->slib
,0,PAGE_SIZE
);
1751 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1755 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1756 q
->sbal
[j
]=*(inbound_sbals_array
++);
1758 q
->queue_type
=q_format
;
1759 q
->int_parm
=int_parm
;
1760 q
->schid
= irq_ptr
->schid
;
1761 q
->irq_ptr
= irq_ptr
;
1766 q
->first_to_check
=0;
1768 q
->handler
=input_handler
;
1769 q
->dev_st_chg_ind
=irq_ptr
->dev_st_chg_ind
;
1771 q
->tasklet
.data
=(unsigned long)q
;
1772 /* q->is_thinint_q isn't valid at this time, but
1773 * irq_ptr->is_thinint_irq is */
1774 q
->tasklet
.func
=(void(*)(unsigned long))
1775 ((irq_ptr
->is_thinint_irq
)?&tiqdio_inbound_processing
:
1776 &qdio_inbound_processing
);
1778 /* actually this is not used for inbound queues. yet. */
1779 atomic_set(&q
->busy_siga_counter
,0);
1780 q
->timing
.busy_start
=0;
1782 /* for (j=0;j<QDIO_STATS_NUMBER;j++)
1783 q->timing.last_transfer_times[j]=(qdio_get_micros()/
1784 QDIO_STATS_NUMBER)*j;
1785 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1789 if (i
>0) irq_ptr
->input_qs
[i
-1]->slib
->nsliba
=
1790 (unsigned long)(q
->slib
);
1791 q
->slib
->sla
=(unsigned long)(q
->sl
);
1792 q
->slib
->slsba
=(unsigned long)(&q
->slsb
.acc
.val
[0]);
1795 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1796 q
->sl
->element
[j
].sbal
=(unsigned long)(q
->sbal
[j
]);
1798 QDIO_DBF_TEXT2(0,setup
,"sl-sb-b0");
1800 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1801 ptr
=(void*)&q
->slsb
;
1802 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1803 ptr
=(void*)q
->sbal
[0];
1804 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1807 if (!irq_ptr
->is_qebsm
) {
1808 unsigned int count
= 1;
1809 for (j
= 0; j
< QDIO_MAX_BUFFERS_PER_Q
; j
++)
1810 set_slsb(q
, &j
, SLSB_P_INPUT_NOT_INIT
, &count
);
1814 for (i
=0;i
<no_output_qs
;i
++) {
1815 q
=irq_ptr
->output_qs
[i
];
1816 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1818 sprintf(dbf_text
,"outq%4x",i
);
1819 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1820 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1822 memset(q
->slib
,0,PAGE_SIZE
);
1823 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1827 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1828 q
->sbal
[j
]=*(outbound_sbals_array
++);
1830 q
->queue_type
=q_format
;
1831 q
->int_parm
=int_parm
;
1833 q
->schid
= irq_ptr
->schid
;
1835 q
->irq_ptr
= irq_ptr
;
1838 q
->first_to_check
=0;
1840 q
->handler
=output_handler
;
1842 q
->tasklet
.data
=(unsigned long)q
;
1843 q
->tasklet
.func
=(void(*)(unsigned long))
1844 &qdio_outbound_processing
;
1846 atomic_set(&q
->busy_siga_counter
,0);
1847 q
->timing
.busy_start
=0;
1850 if (i
>0) irq_ptr
->output_qs
[i
-1]->slib
->nsliba
=
1851 (unsigned long)(q
->slib
);
1852 q
->slib
->sla
=(unsigned long)(q
->sl
);
1853 q
->slib
->slsba
=(unsigned long)(&q
->slsb
.acc
.val
[0]);
1856 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1857 q
->sl
->element
[j
].sbal
=(unsigned long)(q
->sbal
[j
]);
1859 QDIO_DBF_TEXT2(0,setup
,"sl-sb-b0");
1861 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1862 ptr
=(void*)&q
->slsb
;
1863 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1864 ptr
=(void*)q
->sbal
[0];
1865 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1868 if (!irq_ptr
->is_qebsm
) {
1869 unsigned int count
= 1;
1870 for (j
= 0; j
< QDIO_MAX_BUFFERS_PER_Q
; j
++)
1871 set_slsb(q
, &j
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
1877 qdio_fill_thresholds(struct qdio_irq
*irq_ptr
,
1878 unsigned int no_input_qs
,
1879 unsigned int no_output_qs
,
1880 unsigned int min_input_threshold
,
1881 unsigned int max_input_threshold
,
1882 unsigned int min_output_threshold
,
1883 unsigned int max_output_threshold
)
1888 for (i
=0;i
<no_input_qs
;i
++) {
1889 q
=irq_ptr
->input_qs
[i
];
1890 q
->timing
.threshold
=max_input_threshold
;
1891 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1892 q->threshold_classes[j].threshold=
1893 min_input_threshold+
1894 (max_input_threshold-min_input_threshold)/
1897 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1899 for (i
=0;i
<no_output_qs
;i
++) {
1900 q
=irq_ptr
->output_qs
[i
];
1901 q
->timing
.threshold
=max_output_threshold
;
1902 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1903 q->threshold_classes[j].threshold=
1904 min_output_threshold+
1905 (max_output_threshold-min_output_threshold)/
1908 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1913 tiqdio_thinint_handler(void)
1915 QDIO_DBF_TEXT4(0,trace
,"thin_int");
1917 #ifdef QDIO_PERFORMANCE_STATS
1918 perf_stats
.thinints
++;
1919 perf_stats
.start_time_inbound
=NOW
;
1920 #endif /* QDIO_PERFORMANCE_STATS */
1922 /* SVS only when needed:
1923 * issue SVS to benefit from iqdio interrupt avoidance
1924 * (SVS clears AISOI)*/
1926 tiqdio_clear_global_summary();
1928 tiqdio_inbound_checks();
1933 qdio_set_state(struct qdio_irq
*irq_ptr
, enum qdio_irq_states state
)
1936 #ifdef CONFIG_QDIO_DEBUG
1939 QDIO_DBF_TEXT5(0,trace
,"newstate");
1940 sprintf(dbf_text
,"%4x%4x",irq_ptr
->schid
.sch_no
,state
);
1941 QDIO_DBF_TEXT5(0,trace
,dbf_text
);
1942 #endif /* CONFIG_QDIO_DEBUG */
1944 irq_ptr
->state
=state
;
1945 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
1946 irq_ptr
->input_qs
[i
]->state
=state
;
1947 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
1948 irq_ptr
->output_qs
[i
]->state
=state
;
1953 qdio_irq_check_sense(struct subchannel_id schid
, struct irb
*irb
)
1957 if (irb
->esw
.esw0
.erw
.cons
) {
1958 sprintf(dbf_text
,"sens%4x",schid
.sch_no
);
1959 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
1960 QDIO_DBF_HEX0(0,sense
,irb
,QDIO_DBF_SENSE_LEN
);
1962 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1963 HEXDUMP16(WARN
,"irb: ",irb
);
1964 HEXDUMP16(WARN
,"sense data: ",irb
->ecw
);
1970 qdio_handle_pci(struct qdio_irq
*irq_ptr
)
1975 #ifdef QDIO_PERFORMANCE_STATS
1977 perf_stats
.start_time_inbound
=NOW
;
1978 #endif /* QDIO_PERFORMANCE_STATS */
1979 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
1980 q
=irq_ptr
->input_qs
[i
];
1981 if (q
->is_input_q
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
)
1984 #ifdef QDIO_PERFORMANCE_STATS
1985 perf_stats
.tl_runs
--;
1986 #endif /* QDIO_PERFORMANCE_STATS */
1987 __qdio_inbound_processing(q
);
1990 if (!irq_ptr
->hydra_gives_outbound_pcis
)
1992 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1993 q
=irq_ptr
->output_qs
[i
];
1994 #ifdef QDIO_PERFORMANCE_STATS
1995 perf_stats
.tl_runs
--;
1996 #endif /* QDIO_PERFORMANCE_STATS */
1997 if (qdio_is_outbound_q_done(q
))
1999 if (!irq_ptr
->sync_done_on_outb_pcis
)
2001 __qdio_outbound_processing(q
);
2005 static void qdio_establish_handle_irq(struct ccw_device
*, int, int);
2008 qdio_handle_activate_check(struct ccw_device
*cdev
, unsigned long intparm
,
2009 int cstat
, int dstat
)
2011 struct qdio_irq
*irq_ptr
;
2015 irq_ptr
= cdev
->private->qdio_data
;
2017 QDIO_DBF_TEXT2(1, trace
, "ick2");
2018 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2019 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2020 QDIO_DBF_HEX2(0,trace
,&intparm
,sizeof(int));
2021 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2022 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2023 QDIO_PRINT_ERR("received check condition on activate " \
2024 "queues on device %s (cs=x%x, ds=x%x).\n",
2025 cdev
->dev
.bus_id
, cstat
, dstat
);
2026 if (irq_ptr
->no_input_qs
) {
2027 q
=irq_ptr
->input_qs
[0];
2028 } else if (irq_ptr
->no_output_qs
) {
2029 q
=irq_ptr
->output_qs
[0];
2031 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2033 goto omit_handler_call
;
2035 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
2036 QDIO_STATUS_LOOK_FOR_ERROR
,
2037 0,0,0,-1,-1,q
->int_parm
);
2039 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_STOPPED
);
2044 qdio_call_shutdown(void *data
)
2046 struct ccw_device
*cdev
;
2048 cdev
= (struct ccw_device
*)data
;
2049 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
2050 put_device(&cdev
->dev
);
2054 qdio_timeout_handler(struct ccw_device
*cdev
)
2056 struct qdio_irq
*irq_ptr
;
2059 QDIO_DBF_TEXT2(0, trace
, "qtoh");
2060 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2061 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2063 irq_ptr
= cdev
->private->qdio_data
;
2064 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2065 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2067 switch (irq_ptr
->state
) {
2068 case QDIO_IRQ_STATE_INACTIVE
:
2069 QDIO_PRINT_ERR("establish queues on irq %04x: timed out\n",
2070 irq_ptr
->schid
.sch_no
);
2071 QDIO_DBF_TEXT2(1,setup
,"eq:timeo");
2072 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2074 case QDIO_IRQ_STATE_CLEANUP
:
2075 QDIO_PRINT_INFO("Did not get interrupt on cleanup, irq=0x%x.\n",
2076 irq_ptr
->schid
.sch_no
);
2077 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2079 case QDIO_IRQ_STATE_ESTABLISHED
:
2080 case QDIO_IRQ_STATE_ACTIVE
:
2081 /* I/O has been terminated by common I/O layer. */
2082 QDIO_PRINT_INFO("Queues on irq %04x killed by cio.\n",
2083 irq_ptr
->schid
.sch_no
);
2084 QDIO_DBF_TEXT2(1, trace
, "cio:term");
2085 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_STOPPED
);
2086 if (get_device(&cdev
->dev
)) {
2087 /* Can't call shutdown from interrupt context. */
2088 PREPARE_WORK(&cdev
->private->kick_work
,
2089 qdio_call_shutdown
, (void *)cdev
);
2090 queue_work(ccw_device_work
, &cdev
->private->kick_work
);
2096 ccw_device_set_timeout(cdev
, 0);
2097 wake_up(&cdev
->private->wait_q
);
2101 qdio_handler(struct ccw_device
*cdev
, unsigned long intparm
, struct irb
*irb
)
2103 struct qdio_irq
*irq_ptr
;
2107 #ifdef CONFIG_QDIO_DEBUG
2108 QDIO_DBF_TEXT4(0, trace
, "qint");
2109 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2110 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2111 #endif /* CONFIG_QDIO_DEBUG */
2114 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2115 "handler, device %s\n", cdev
->dev
.bus_id
);
2119 irq_ptr
= cdev
->private->qdio_data
;
2121 QDIO_DBF_TEXT2(1, trace
, "uint");
2122 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2123 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2124 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2130 /* Currently running i/o is in error. */
2131 switch (PTR_ERR(irb
)) {
2133 QDIO_PRINT_ERR("i/o error on device %s\n",
2137 qdio_timeout_handler(cdev
);
2140 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2141 PTR_ERR(irb
), cdev
->dev
.bus_id
);
2146 qdio_irq_check_sense(irq_ptr
->schid
, irb
);
2148 #ifdef CONFIG_QDIO_DEBUG
2149 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2150 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2151 #endif /* CONFIG_QDIO_DEBUG */
2153 cstat
= irb
->scsw
.cstat
;
2154 dstat
= irb
->scsw
.dstat
;
2156 switch (irq_ptr
->state
) {
2157 case QDIO_IRQ_STATE_INACTIVE
:
2158 qdio_establish_handle_irq(cdev
, cstat
, dstat
);
2161 case QDIO_IRQ_STATE_CLEANUP
:
2162 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2165 case QDIO_IRQ_STATE_ESTABLISHED
:
2166 case QDIO_IRQ_STATE_ACTIVE
:
2167 if (cstat
& SCHN_STAT_PCI
) {
2168 qdio_handle_pci(irq_ptr
);
2172 if ((cstat
&~SCHN_STAT_PCI
)||dstat
) {
2173 qdio_handle_activate_check(cdev
, intparm
, cstat
, dstat
);
2177 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2179 irq_ptr
->state
, cdev
->dev
.bus_id
);
2181 wake_up(&cdev
->private->wait_q
);
2186 qdio_synchronize(struct ccw_device
*cdev
, unsigned int flags
,
2187 unsigned int queue_number
)
2191 struct qdio_irq
*irq_ptr
;
2193 #ifdef CONFIG_QDIO_DEBUG
2194 char dbf_text
[15]="SyncXXXX";
2197 irq_ptr
= cdev
->private->qdio_data
;
2201 #ifdef CONFIG_QDIO_DEBUG
2202 *((int*)(&dbf_text
[4])) = irq_ptr
->schid
.sch_no
;
2203 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2204 *((int*)(&dbf_text
[0]))=flags
;
2205 *((int*)(&dbf_text
[4]))=queue_number
;
2206 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2207 #endif /* CONFIG_QDIO_DEBUG */
2209 if (flags
&QDIO_FLAG_SYNC_INPUT
) {
2210 q
=irq_ptr
->input_qs
[queue_number
];
2213 if (!(irq_ptr
->is_qebsm
))
2214 cc
= do_siga_sync(q
->schid
, 0, q
->mask
);
2215 } else if (flags
&QDIO_FLAG_SYNC_OUTPUT
) {
2216 q
=irq_ptr
->output_qs
[queue_number
];
2219 if (!(irq_ptr
->is_qebsm
))
2220 cc
= do_siga_sync(q
->schid
, q
->mask
, 0);
2226 QDIO_DBF_HEX3(0,trace
,&ptr
,sizeof(int));
2232 qdio_check_subchannel_qebsm(struct qdio_irq
*irq_ptr
, unsigned char qdioac
,
2233 unsigned long token
)
2237 unsigned int count
, start_buf
;
2240 /*check if QEBSM is disabled */
2241 if (!(irq_ptr
->is_qebsm
) || !(qdioac
& 0x01)) {
2242 irq_ptr
->is_qebsm
= 0;
2243 irq_ptr
->sch_token
= 0;
2244 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2245 QDIO_DBF_TEXT0(0,setup
,"noV=V");
2248 irq_ptr
->sch_token
= token
;
2250 for (i
= 0; i
< irq_ptr
->no_input_qs
;i
++) {
2251 q
= irq_ptr
->input_qs
[i
];
2252 count
= QDIO_MAX_BUFFERS_PER_Q
;
2254 set_slsb(q
, &start_buf
, SLSB_P_INPUT_NOT_INIT
, &count
);
2256 sprintf(dbf_text
,"V=V:%2x",irq_ptr
->is_qebsm
);
2257 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2258 sprintf(dbf_text
,"%8lx",irq_ptr
->sch_token
);
2259 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2261 for (i
= 0; i
< irq_ptr
->no_output_qs
; i
++) {
2262 q
= irq_ptr
->output_qs
[i
];
2263 count
= QDIO_MAX_BUFFERS_PER_Q
;
2265 set_slsb(q
, &start_buf
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
2270 qdio_get_ssqd_information(struct qdio_irq
*irq_ptr
)
2273 unsigned char qdioac
;
2275 struct chsc_header request
;
2281 struct chsc_header response
;
2300 QDIO_DBF_TEXT0(0,setup
,"getssqd");
2302 ssqd_area
= (void *)get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
2304 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2305 "SIGAs for sch x%x.\n", irq_ptr
->schid
.sch_no
);
2306 irq_ptr
->qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
||
2307 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
||
2308 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2309 irq_ptr
->is_qebsm
= 0;
2310 irq_ptr
->sch_token
= 0;
2311 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2315 ssqd_area
->request
= (struct chsc_header
) {
2319 ssqd_area
->first_sch
= irq_ptr
->schid
.sch_no
;
2320 ssqd_area
->last_sch
= irq_ptr
->schid
.sch_no
;
2321 result
= chsc(ssqd_area
);
2324 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
2325 "SIGAs for sch x%x.\n",
2326 result
, irq_ptr
->schid
.sch_no
);
2327 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
||
2328 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
||
2329 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2330 irq_ptr
->is_qebsm
= 0;
2334 if (ssqd_area
->response
.code
!= QDIO_CHSC_RESPONSE_CODE_OK
) {
2335 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2336 "is 0x%x. Using all SIGAs for sch x%x.\n",
2337 ssqd_area
->response
.code
, irq_ptr
->schid
.sch_no
);
2338 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
||
2339 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
||
2340 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2341 irq_ptr
->is_qebsm
= 0;
2344 if (!(ssqd_area
->flags
& CHSC_FLAG_QDIO_CAPABILITY
) ||
2345 !(ssqd_area
->flags
& CHSC_FLAG_VALIDITY
) ||
2346 (ssqd_area
->sch
!= irq_ptr
->schid
.sch_no
)) {
2347 QDIO_PRINT_WARN("huh? problems checking out sch x%x... " \
2348 "using all SIGAs.\n",irq_ptr
->schid
.sch_no
);
2349 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2350 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2351 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* worst case */
2352 irq_ptr
->is_qebsm
= 0;
2355 qdioac
= ssqd_area
->qdioac1
;
2357 qdio_check_subchannel_qebsm(irq_ptr
, qdioac
,
2358 ssqd_area
->sch_token
);
2359 free_page ((unsigned long) ssqd_area
);
2360 irq_ptr
->qdioac
= qdioac
;
2364 tiqdio_check_chsc_availability(void)
2368 if (!css_characteristics_avail
)
2371 /* Check for bit 41. */
2372 if (!css_general_characteristics
.aif
) {
2373 QDIO_PRINT_WARN("Adapter interruption facility not " \
2378 /* Check for bits 107 and 108. */
2379 if (!css_chsc_characteristics
.scssc
||
2380 !css_chsc_characteristics
.scsscf
) {
2381 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2382 "not available.\n");
2386 /* Check for OSA/FCP thin interrupts (bit 67). */
2387 hydra_thinints
= css_general_characteristics
.aif_osa
;
2388 sprintf(dbf_text
,"hydrati%1x", hydra_thinints
);
2389 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2391 #ifdef CONFIG_ARCH_S390X
2392 /* Check for QEBSM support in general (bit 58). */
2393 is_passthrough
= css_general_characteristics
.qebsm
;
2395 sprintf(dbf_text
,"cssQBS:%1x", is_passthrough
);
2396 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2398 /* Check for aif time delay disablement fac (bit 56). If installed,
2399 * omit svs even under lpar (good point by rick again) */
2400 omit_svs
= css_general_characteristics
.aif_tdd
;
2401 sprintf(dbf_text
,"omitsvs%1x", omit_svs
);
2402 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2408 tiqdio_set_subchannel_ind(struct qdio_irq
*irq_ptr
, int reset_to_zero
)
2410 unsigned long real_addr_local_summary_bit
;
2411 unsigned long real_addr_dev_st_chg_ind
;
2415 unsigned int resp_code
;
2419 struct chsc_header request
;
2424 u64 summary_indicator_addr
;
2425 u64 subchannel_indicator_addr
;
2430 u32 word_with_d_bit
;
2431 /* set to 0x10000000 to enable
2432 * time delay disablement facility */
2434 struct subchannel_id schid
;
2435 u32 reserved6
[1004];
2436 struct chsc_header response
;
2440 if (!irq_ptr
->is_thinint_irq
)
2443 if (reset_to_zero
) {
2444 real_addr_local_summary_bit
=0;
2445 real_addr_dev_st_chg_ind
=0;
2447 real_addr_local_summary_bit
=
2448 virt_to_phys((volatile void *)indicators
);
2449 real_addr_dev_st_chg_ind
=
2450 virt_to_phys((volatile void *)irq_ptr
->dev_st_chg_ind
);
2453 scssc_area
= (void *)get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
2455 QDIO_PRINT_WARN("No memory for setting indicators on " \
2456 "subchannel x%x.\n", 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 x%x, " \
2483 "cc=%i.\n",irq_ptr
->schid
.sch_no
,result
);
2488 resp_code
= scssc_area
->response
.code
;
2489 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2490 QDIO_PRINT_WARN("response upon setting indicators " \
2491 "is 0x%x.\n",resp_code
);
2492 sprintf(dbf_text
,"sidR%4x",resp_code
);
2493 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2494 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2495 ptr
=&scssc_area
->response
;
2496 QDIO_DBF_HEX2(1,setup
,&ptr
,QDIO_DBF_SETUP_LEN
);
2501 QDIO_DBF_TEXT2(0,setup
,"setscind");
2502 QDIO_DBF_HEX2(0,setup
,&real_addr_local_summary_bit
,
2503 sizeof(unsigned long));
2504 QDIO_DBF_HEX2(0,setup
,&real_addr_dev_st_chg_ind
,sizeof(unsigned long));
2507 free_page ((unsigned long) scssc_area
);
2513 tiqdio_set_delay_target(struct qdio_irq
*irq_ptr
, unsigned long delay_target
)
2515 unsigned int resp_code
;
2521 struct chsc_header request
;
2528 u32 reserved5
[1009];
2529 struct chsc_header response
;
2533 if (!irq_ptr
->is_thinint_irq
)
2536 scsscf_area
= (void *)get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
2538 QDIO_PRINT_WARN("No memory for setting delay target on " \
2539 "subchannel x%x.\n", irq_ptr
->schid
.sch_no
);
2542 scsscf_area
->request
= (struct chsc_header
) {
2547 scsscf_area
->delay_target
= delay_target
<<16;
2549 result
=chsc(scsscf_area
);
2551 QDIO_PRINT_WARN("could not set delay target on irq x%x, " \
2552 "cc=%i. Continuing.\n",irq_ptr
->schid
.sch_no
,
2558 resp_code
= scsscf_area
->response
.code
;
2559 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2560 QDIO_PRINT_WARN("response upon setting delay target " \
2561 "is 0x%x. Continuing.\n",resp_code
);
2562 sprintf(dbf_text
,"sdtR%4x",resp_code
);
2563 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2564 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2565 ptr
=&scsscf_area
->response
;
2566 QDIO_DBF_HEX2(1,trace
,&ptr
,QDIO_DBF_TRACE_LEN
);
2568 QDIO_DBF_TEXT2(0,trace
,"delytrgt");
2569 QDIO_DBF_HEX2(0,trace
,&delay_target
,sizeof(unsigned long));
2570 result
= 0; /* not critical */
2572 free_page ((unsigned long) scsscf_area
);
2577 qdio_cleanup(struct ccw_device
*cdev
, int how
)
2579 struct qdio_irq
*irq_ptr
;
2583 irq_ptr
= cdev
->private->qdio_data
;
2587 sprintf(dbf_text
,"qcln%4x",irq_ptr
->schid
.sch_no
);
2588 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2589 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2591 rc
= qdio_shutdown(cdev
, how
);
2592 if ((rc
== 0) || (rc
== -EINPROGRESS
))
2593 rc
= qdio_free(cdev
);
2598 qdio_shutdown(struct ccw_device
*cdev
, int how
)
2600 struct qdio_irq
*irq_ptr
;
2604 unsigned long flags
;
2608 irq_ptr
= cdev
->private->qdio_data
;
2612 down(&irq_ptr
->setting_up_sema
);
2614 sprintf(dbf_text
,"qsqs%4x",irq_ptr
->schid
.sch_no
);
2615 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2616 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2618 /* mark all qs as uninteresting */
2619 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
2620 atomic_set(&irq_ptr
->input_qs
[i
]->is_in_shutdown
,1);
2622 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
2623 atomic_set(&irq_ptr
->output_qs
[i
]->is_in_shutdown
,1);
2625 tasklet_kill(&tiqdio_tasklet
);
2627 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2628 qdio_unmark_q(irq_ptr
->input_qs
[i
]);
2629 tasklet_kill(&irq_ptr
->input_qs
[i
]->tasklet
);
2630 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2631 !atomic_read(&irq_ptr
->
2634 QDIO_NO_USE_COUNT_TIMEOUT
);
2635 if (atomic_read(&irq_ptr
->input_qs
[i
]->use_count
))
2636 result
=-EINPROGRESS
;
2639 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2640 tasklet_kill(&irq_ptr
->output_qs
[i
]->tasklet
);
2641 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2642 !atomic_read(&irq_ptr
->
2645 QDIO_NO_USE_COUNT_TIMEOUT
);
2646 if (atomic_read(&irq_ptr
->output_qs
[i
]->use_count
))
2647 result
=-EINPROGRESS
;
2650 /* cleanup subchannel */
2651 spin_lock_irqsave(get_ccwdev_lock(cdev
),flags
);
2652 if (how
&QDIO_FLAG_CLEANUP_USING_CLEAR
) {
2653 rc
= ccw_device_clear(cdev
, QDIO_DOING_CLEANUP
);
2654 timeout
=QDIO_CLEANUP_CLEAR_TIMEOUT
;
2655 } else if (how
&QDIO_FLAG_CLEANUP_USING_HALT
) {
2656 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2657 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2658 } else { /* default behaviour */
2659 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2660 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2662 if (rc
== -ENODEV
) {
2663 /* No need to wait for device no longer present. */
2664 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2665 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2666 } else if (((void *)cdev
->handler
!= (void *)qdio_handler
) && rc
== 0) {
2668 * Whoever put another handler there, has to cope with the
2669 * interrupt theirself. Might happen if qdio_shutdown was
2670 * called on already shutdown queues, but this shouldn't have
2673 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2674 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2675 } else if (rc
== 0) {
2676 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_CLEANUP
);
2677 ccw_device_set_timeout(cdev
, timeout
);
2678 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),flags
);
2680 wait_event(cdev
->private->wait_q
,
2681 irq_ptr
->state
== QDIO_IRQ_STATE_INACTIVE
||
2682 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
2684 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2685 "device %s\n", result
, cdev
->dev
.bus_id
);
2686 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2690 if (irq_ptr
->is_thinint_irq
) {
2691 qdio_put_indicator((__u32
*)irq_ptr
->dev_st_chg_ind
);
2692 tiqdio_set_subchannel_ind(irq_ptr
,1);
2693 /* reset adapter interrupt indicators */
2696 /* exchange int handlers, if necessary */
2697 if ((void*)cdev
->handler
== (void*)qdio_handler
)
2698 cdev
->handler
=irq_ptr
->original_int_handler
;
2700 /* Ignore errors. */
2701 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2702 ccw_device_set_timeout(cdev
, 0);
2704 up(&irq_ptr
->setting_up_sema
);
2709 qdio_free(struct ccw_device
*cdev
)
2711 struct qdio_irq
*irq_ptr
;
2714 irq_ptr
= cdev
->private->qdio_data
;
2718 down(&irq_ptr
->setting_up_sema
);
2720 sprintf(dbf_text
,"qfqs%4x",irq_ptr
->schid
.sch_no
);
2721 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2722 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2724 cdev
->private->qdio_data
= 0;
2726 up(&irq_ptr
->setting_up_sema
);
2728 qdio_release_irq_memory(irq_ptr
);
2729 module_put(THIS_MODULE
);
2734 qdio_allocate_do_dbf(struct qdio_initialize
*init_data
)
2736 char dbf_text
[20]; /* if a printf printed out more than 8 chars */
2738 sprintf(dbf_text
,"qfmt:%x",init_data
->q_format
);
2739 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2740 QDIO_DBF_HEX0(0,setup
,init_data
->adapter_name
,8);
2741 sprintf(dbf_text
,"qpff%4x",init_data
->qib_param_field_format
);
2742 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2743 QDIO_DBF_HEX0(0,setup
,&init_data
->qib_param_field
,sizeof(char*));
2744 QDIO_DBF_HEX0(0,setup
,&init_data
->input_slib_elements
,sizeof(long*));
2745 QDIO_DBF_HEX0(0,setup
,&init_data
->output_slib_elements
,sizeof(long*));
2746 sprintf(dbf_text
,"miit%4x",init_data
->min_input_threshold
);
2747 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2748 sprintf(dbf_text
,"mait%4x",init_data
->max_input_threshold
);
2749 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2750 sprintf(dbf_text
,"miot%4x",init_data
->min_output_threshold
);
2751 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2752 sprintf(dbf_text
,"maot%4x",init_data
->max_output_threshold
);
2753 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2754 sprintf(dbf_text
,"niq:%4x",init_data
->no_input_qs
);
2755 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2756 sprintf(dbf_text
,"noq:%4x",init_data
->no_output_qs
);
2757 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2758 QDIO_DBF_HEX0(0,setup
,&init_data
->input_handler
,sizeof(void*));
2759 QDIO_DBF_HEX0(0,setup
,&init_data
->output_handler
,sizeof(void*));
2760 QDIO_DBF_HEX0(0,setup
,&init_data
->int_parm
,sizeof(long));
2761 QDIO_DBF_HEX0(0,setup
,&init_data
->flags
,sizeof(long));
2762 QDIO_DBF_HEX0(0,setup
,&init_data
->input_sbal_addr_array
,sizeof(void*));
2763 QDIO_DBF_HEX0(0,setup
,&init_data
->output_sbal_addr_array
,sizeof(void*));
2767 qdio_allocate_fill_input_desc(struct qdio_irq
*irq_ptr
, int i
, int iqfmt
)
2769 irq_ptr
->input_qs
[i
]->is_iqdio_q
= iqfmt
;
2770 irq_ptr
->input_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2772 irq_ptr
->qdr
->qdf0
[i
].sliba
=(unsigned long)(irq_ptr
->input_qs
[i
]->slib
);
2774 irq_ptr
->qdr
->qdf0
[i
].sla
=(unsigned long)(irq_ptr
->input_qs
[i
]->sl
);
2776 irq_ptr
->qdr
->qdf0
[i
].slsba
=
2777 (unsigned long)(&irq_ptr
->input_qs
[i
]->slsb
.acc
.val
[0]);
2779 irq_ptr
->qdr
->qdf0
[i
].akey
=QDIO_STORAGE_KEY
;
2780 irq_ptr
->qdr
->qdf0
[i
].bkey
=QDIO_STORAGE_KEY
;
2781 irq_ptr
->qdr
->qdf0
[i
].ckey
=QDIO_STORAGE_KEY
;
2782 irq_ptr
->qdr
->qdf0
[i
].dkey
=QDIO_STORAGE_KEY
;
2786 qdio_allocate_fill_output_desc(struct qdio_irq
*irq_ptr
, int i
,
2789 irq_ptr
->output_qs
[i
]->is_iqdio_q
= iqfmt
;
2790 irq_ptr
->output_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2792 irq_ptr
->qdr
->qdf0
[i
+j
].sliba
=(unsigned long)(irq_ptr
->output_qs
[i
]->slib
);
2794 irq_ptr
->qdr
->qdf0
[i
+j
].sla
=(unsigned long)(irq_ptr
->output_qs
[i
]->sl
);
2796 irq_ptr
->qdr
->qdf0
[i
+j
].slsba
=
2797 (unsigned long)(&irq_ptr
->output_qs
[i
]->slsb
.acc
.val
[0]);
2799 irq_ptr
->qdr
->qdf0
[i
+j
].akey
=QDIO_STORAGE_KEY
;
2800 irq_ptr
->qdr
->qdf0
[i
+j
].bkey
=QDIO_STORAGE_KEY
;
2801 irq_ptr
->qdr
->qdf0
[i
+j
].ckey
=QDIO_STORAGE_KEY
;
2802 irq_ptr
->qdr
->qdf0
[i
+j
].dkey
=QDIO_STORAGE_KEY
;
2807 qdio_initialize_set_siga_flags_input(struct qdio_irq
*irq_ptr
)
2811 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2812 irq_ptr
->input_qs
[i
]->siga_sync
=
2813 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2814 irq_ptr
->input_qs
[i
]->siga_in
=
2815 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2816 irq_ptr
->input_qs
[i
]->siga_out
=
2817 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2818 irq_ptr
->input_qs
[i
]->siga_sync_done_on_thinints
=
2819 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2820 irq_ptr
->input_qs
[i
]->hydra_gives_outbound_pcis
=
2821 irq_ptr
->hydra_gives_outbound_pcis
;
2822 irq_ptr
->input_qs
[i
]->siga_sync_done_on_outb_tis
=
2824 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2825 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2826 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2827 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2833 qdio_initialize_set_siga_flags_output(struct qdio_irq
*irq_ptr
)
2837 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2838 irq_ptr
->output_qs
[i
]->siga_sync
=
2839 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2840 irq_ptr
->output_qs
[i
]->siga_in
=
2841 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2842 irq_ptr
->output_qs
[i
]->siga_out
=
2843 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2844 irq_ptr
->output_qs
[i
]->siga_sync_done_on_thinints
=
2845 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2846 irq_ptr
->output_qs
[i
]->hydra_gives_outbound_pcis
=
2847 irq_ptr
->hydra_gives_outbound_pcis
;
2848 irq_ptr
->output_qs
[i
]->siga_sync_done_on_outb_tis
=
2850 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2851 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2852 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2853 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2859 qdio_establish_irq_check_for_errors(struct ccw_device
*cdev
, int cstat
,
2863 struct qdio_irq
*irq_ptr
;
2865 irq_ptr
= cdev
->private->qdio_data
;
2867 if (cstat
|| (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
))) {
2868 sprintf(dbf_text
,"ick1%4x",irq_ptr
->schid
.sch_no
);
2869 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2870 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2871 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2872 QDIO_PRINT_ERR("received check condition on establish " \
2873 "queues on irq 0x%x (cs=x%x, ds=x%x).\n",
2874 irq_ptr
->schid
.sch_no
,cstat
,dstat
);
2875 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ERR
);
2878 if (!(dstat
& DEV_STAT_DEV_END
)) {
2879 QDIO_DBF_TEXT2(1,setup
,"eq:no de");
2880 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2881 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2882 QDIO_PRINT_ERR("establish queues on irq %04x: didn't get "
2883 "device end: dstat=%02x, cstat=%02x\n",
2884 irq_ptr
->schid
.sch_no
, dstat
, cstat
);
2885 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2889 if (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
)) {
2890 QDIO_DBF_TEXT2(1,setup
,"eq:badio");
2891 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2892 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2893 QDIO_PRINT_ERR("establish queues on irq %04x: got "
2894 "the following devstat: dstat=%02x, "
2896 irq_ptr
->schid
.sch_no
, dstat
, cstat
);
2897 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2904 qdio_establish_handle_irq(struct ccw_device
*cdev
, int cstat
, int dstat
)
2906 struct qdio_irq
*irq_ptr
;
2909 irq_ptr
= cdev
->private->qdio_data
;
2911 sprintf(dbf_text
,"qehi%4x",cdev
->private->sch_no
);
2912 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2913 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2915 if (qdio_establish_irq_check_for_errors(cdev
, cstat
, dstat
)) {
2916 ccw_device_set_timeout(cdev
, 0);
2920 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ESTABLISHED
);
2921 ccw_device_set_timeout(cdev
, 0);
2925 qdio_initialize(struct qdio_initialize
*init_data
)
2930 sprintf(dbf_text
,"qini%4x",init_data
->cdev
->private->sch_no
);
2931 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2932 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2934 rc
= qdio_allocate(init_data
);
2936 rc
= qdio_establish(init_data
);
2938 qdio_free(init_data
->cdev
);
2946 qdio_allocate(struct qdio_initialize
*init_data
)
2948 struct qdio_irq
*irq_ptr
;
2951 sprintf(dbf_text
,"qalc%4x",init_data
->cdev
->private->sch_no
);
2952 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2953 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2954 if ( (init_data
->no_input_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2955 (init_data
->no_output_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2956 ((init_data
->no_input_qs
) && (!init_data
->input_handler
)) ||
2957 ((init_data
->no_output_qs
) && (!init_data
->output_handler
)) )
2960 if (!init_data
->input_sbal_addr_array
)
2963 if (!init_data
->output_sbal_addr_array
)
2966 qdio_allocate_do_dbf(init_data
);
2969 irq_ptr
=kmalloc(sizeof(struct qdio_irq
), GFP_KERNEL
| GFP_DMA
);
2971 QDIO_DBF_TEXT0(0,setup
,"irq_ptr:");
2972 QDIO_DBF_HEX0(0,setup
,&irq_ptr
,sizeof(void*));
2975 QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n");
2979 memset(irq_ptr
,0,sizeof(struct qdio_irq
));
2981 init_MUTEX(&irq_ptr
->setting_up_sema
);
2983 /* QDR must be in DMA area since CCW data address is only 32 bit */
2984 irq_ptr
->qdr
=kmalloc(sizeof(struct qdr
), GFP_KERNEL
| GFP_DMA
);
2985 if (!(irq_ptr
->qdr
)) {
2987 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
2990 QDIO_DBF_TEXT0(0,setup
,"qdr:");
2991 QDIO_DBF_HEX0(0,setup
,&irq_ptr
->qdr
,sizeof(void*));
2993 if (qdio_alloc_qs(irq_ptr
,
2994 init_data
->no_input_qs
,
2995 init_data
->no_output_qs
)) {
2996 qdio_release_irq_memory(irq_ptr
);
3000 init_data
->cdev
->private->qdio_data
= irq_ptr
;
3002 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_INACTIVE
);
3007 int qdio_fill_irq(struct qdio_initialize
*init_data
)
3013 struct qdio_irq
*irq_ptr
;
3015 irq_ptr
= init_data
->cdev
->private->qdio_data
;
3017 memset(irq_ptr
,0,((char*)&irq_ptr
->qdr
)-((char*)irq_ptr
));
3019 /* wipes qib.ac, required by ar7063 */
3020 memset(irq_ptr
->qdr
,0,sizeof(struct qdr
));
3022 irq_ptr
->int_parm
=init_data
->int_parm
;
3024 irq_ptr
->schid
= ccw_device_get_subchannel_id(init_data
->cdev
);
3025 irq_ptr
->no_input_qs
=init_data
->no_input_qs
;
3026 irq_ptr
->no_output_qs
=init_data
->no_output_qs
;
3028 if (init_data
->q_format
==QDIO_IQDIO_QFMT
) {
3029 irq_ptr
->is_iqdio_irq
=1;
3030 irq_ptr
->is_thinint_irq
=1;
3032 irq_ptr
->is_iqdio_irq
=0;
3033 irq_ptr
->is_thinint_irq
=hydra_thinints
;
3035 sprintf(dbf_text
,"is_i_t%1x%1x",
3036 irq_ptr
->is_iqdio_irq
,irq_ptr
->is_thinint_irq
);
3037 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3039 if (irq_ptr
->is_thinint_irq
) {
3040 irq_ptr
->dev_st_chg_ind
= qdio_get_indicator();
3041 QDIO_DBF_HEX1(0,setup
,&irq_ptr
->dev_st_chg_ind
,sizeof(void*));
3042 if (!irq_ptr
->dev_st_chg_ind
) {
3043 QDIO_PRINT_WARN("no indicator location available " \
3044 "for irq 0x%x\n",irq_ptr
->schid
.sch_no
);
3045 qdio_release_irq_memory(irq_ptr
);
3051 irq_ptr
->equeue
.cmd
=DEFAULT_ESTABLISH_QS_CMD
;
3052 irq_ptr
->equeue
.count
=DEFAULT_ESTABLISH_QS_COUNT
;
3053 irq_ptr
->aqueue
.cmd
=DEFAULT_ACTIVATE_QS_CMD
;
3054 irq_ptr
->aqueue
.count
=DEFAULT_ACTIVATE_QS_COUNT
;
3056 qdio_fill_qs(irq_ptr
, init_data
->cdev
,
3057 init_data
->no_input_qs
,
3058 init_data
->no_output_qs
,
3059 init_data
->input_handler
,
3060 init_data
->output_handler
,init_data
->int_parm
,
3061 init_data
->q_format
,init_data
->flags
,
3062 init_data
->input_sbal_addr_array
,
3063 init_data
->output_sbal_addr_array
);
3065 if (!try_module_get(THIS_MODULE
)) {
3066 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3067 qdio_release_irq_memory(irq_ptr
);
3071 qdio_fill_thresholds(irq_ptr
,init_data
->no_input_qs
,
3072 init_data
->no_output_qs
,
3073 init_data
->min_input_threshold
,
3074 init_data
->max_input_threshold
,
3075 init_data
->min_output_threshold
,
3076 init_data
->max_output_threshold
);
3079 irq_ptr
->qdr
->qfmt
=init_data
->q_format
;
3080 irq_ptr
->qdr
->iqdcnt
=init_data
->no_input_qs
;
3081 irq_ptr
->qdr
->oqdcnt
=init_data
->no_output_qs
;
3082 irq_ptr
->qdr
->iqdsz
=sizeof(struct qdesfmt0
)/4; /* size in words */
3083 irq_ptr
->qdr
->oqdsz
=sizeof(struct qdesfmt0
)/4;
3085 irq_ptr
->qdr
->qiba
=(unsigned long)&irq_ptr
->qib
;
3086 irq_ptr
->qdr
->qkey
=QDIO_STORAGE_KEY
;
3089 irq_ptr
->is_qebsm
= is_passthrough
;
3090 if (irq_ptr
->is_qebsm
)
3091 irq_ptr
->qib
.rflags
|= QIB_RFLAGS_ENABLE_QEBSM
;
3093 irq_ptr
->qib
.qfmt
=init_data
->q_format
;
3094 if (init_data
->no_input_qs
)
3095 irq_ptr
->qib
.isliba
=(unsigned long)(irq_ptr
->input_qs
[0]->slib
);
3096 if (init_data
->no_output_qs
)
3097 irq_ptr
->qib
.osliba
=(unsigned long)(irq_ptr
->output_qs
[0]->slib
);
3098 memcpy(irq_ptr
->qib
.ebcnam
,init_data
->adapter_name
,8);
3100 qdio_set_impl_params(irq_ptr
,init_data
->qib_param_field_format
,
3101 init_data
->qib_param_field
,
3102 init_data
->no_input_qs
,
3103 init_data
->no_output_qs
,
3104 init_data
->input_slib_elements
,
3105 init_data
->output_slib_elements
);
3107 /* first input descriptors, then output descriptors */
3108 is_iqdio
= (init_data
->q_format
== QDIO_IQDIO_QFMT
) ? 1 : 0;
3109 for (i
=0;i
<init_data
->no_input_qs
;i
++)
3110 qdio_allocate_fill_input_desc(irq_ptr
, i
, is_iqdio
);
3112 for (i
=0;i
<init_data
->no_output_qs
;i
++)
3113 qdio_allocate_fill_output_desc(irq_ptr
, i
,
3114 init_data
->no_input_qs
,
3117 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3119 /* get qdio commands */
3120 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_EQUEUE
);
3122 QDIO_DBF_TEXT2(1,setup
,"no eq");
3123 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3124 "Trying to use default.\n");
3126 irq_ptr
->equeue
= *ciw
;
3127 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_AQUEUE
);
3129 QDIO_DBF_TEXT2(1,setup
,"no aq");
3130 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3131 "Trying to use default.\n");
3133 irq_ptr
->aqueue
= *ciw
;
3135 /* Set new interrupt handler. */
3136 irq_ptr
->original_int_handler
= init_data
->cdev
->handler
;
3137 init_data
->cdev
->handler
= qdio_handler
;
3143 qdio_establish(struct qdio_initialize
*init_data
)
3145 struct qdio_irq
*irq_ptr
;
3146 unsigned long saveflags
;
3147 int result
, result2
;
3148 struct ccw_device
*cdev
;
3151 cdev
=init_data
->cdev
;
3152 irq_ptr
= cdev
->private->qdio_data
;
3156 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3159 down(&irq_ptr
->setting_up_sema
);
3161 qdio_fill_irq(init_data
);
3163 /* the thinint CHSC stuff */
3164 if (irq_ptr
->is_thinint_irq
) {
3166 result
= tiqdio_set_subchannel_ind(irq_ptr
,0);
3168 up(&irq_ptr
->setting_up_sema
);
3169 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3172 tiqdio_set_delay_target(irq_ptr
,TIQDIO_DELAY_TARGET
);
3175 sprintf(dbf_text
,"qest%4x",cdev
->private->sch_no
);
3176 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3177 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
3180 irq_ptr
->ccw
.cmd_code
=irq_ptr
->equeue
.cmd
;
3181 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3182 irq_ptr
->ccw
.count
=irq_ptr
->equeue
.count
;
3183 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(irq_ptr
->qdr
);
3185 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3187 ccw_device_set_options(cdev
, 0);
3188 result
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3189 QDIO_DOING_ESTABLISH
,0, 0,
3190 QDIO_ESTABLISH_TIMEOUT
);
3192 result2
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3193 QDIO_DOING_ESTABLISH
,0,0,
3194 QDIO_ESTABLISH_TIMEOUT
);
3195 sprintf(dbf_text
,"eq:io%4x",result
);
3196 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3198 sprintf(dbf_text
,"eq:io%4x",result
);
3199 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3201 QDIO_PRINT_WARN("establish queues on irq %04x: do_IO " \
3202 "returned %i, next try returned %i\n",
3203 irq_ptr
->schid
.sch_no
,result
,result2
);
3206 ccw_device_set_timeout(cdev
, 0);
3209 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3212 up(&irq_ptr
->setting_up_sema
);
3213 qdio_shutdown(cdev
,QDIO_FLAG_CLEANUP_USING_CLEAR
);
3217 /* Timeout is cared for already by using ccw_device_start_timeout(). */
3218 wait_event_interruptible(cdev
->private->wait_q
,
3219 irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
||
3220 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
3222 if (irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
)
3225 up(&irq_ptr
->setting_up_sema
);
3226 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3230 qdio_get_ssqd_information(irq_ptr
);
3231 /* if this gets set once, we're running under VM and can omit SVSes */
3232 if (irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
)
3235 sprintf(dbf_text
,"qdioac%2x",irq_ptr
->qdioac
);
3236 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3238 sprintf(dbf_text
,"qib ac%2x",irq_ptr
->qib
.ac
);
3239 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3241 irq_ptr
->hydra_gives_outbound_pcis
=
3242 irq_ptr
->qib
.ac
&QIB_AC_OUTBOUND_PCI_SUPPORTED
;
3243 irq_ptr
->sync_done_on_outb_pcis
=
3244 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
;
3246 qdio_initialize_set_siga_flags_input(irq_ptr
);
3247 qdio_initialize_set_siga_flags_output(irq_ptr
);
3249 up(&irq_ptr
->setting_up_sema
);
3256 qdio_activate(struct ccw_device
*cdev
, int flags
)
3258 struct qdio_irq
*irq_ptr
;
3259 int i
,result
=0,result2
;
3260 unsigned long saveflags
;
3261 char dbf_text
[20]; /* see qdio_initialize */
3263 irq_ptr
= cdev
->private->qdio_data
;
3267 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3270 down(&irq_ptr
->setting_up_sema
);
3271 if (irq_ptr
->state
==QDIO_IRQ_STATE_INACTIVE
) {
3276 sprintf(dbf_text
,"qact%4x", irq_ptr
->schid
.sch_no
);
3277 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3278 QDIO_DBF_TEXT2(0,trace
,dbf_text
);
3281 irq_ptr
->ccw
.cmd_code
=irq_ptr
->aqueue
.cmd
;
3282 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3283 irq_ptr
->ccw
.count
=irq_ptr
->aqueue
.count
;
3284 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(0);
3286 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3288 ccw_device_set_timeout(cdev
, 0);
3289 ccw_device_set_options(cdev
, CCWDEV_REPORT_ALL
);
3290 result
=ccw_device_start(cdev
,&irq_ptr
->ccw
,QDIO_DOING_ACTIVATE
,
3291 0, DOIO_DENY_PREFETCH
);
3293 result2
=ccw_device_start(cdev
,&irq_ptr
->ccw
,
3294 QDIO_DOING_ACTIVATE
,0,0);
3295 sprintf(dbf_text
,"aq:io%4x",result
);
3296 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3298 sprintf(dbf_text
,"aq:io%4x",result
);
3299 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3301 QDIO_PRINT_WARN("activate queues on irq %04x: do_IO " \
3302 "returned %i, next try returned %i\n",
3303 irq_ptr
->schid
.sch_no
,result
,result2
);
3307 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3311 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3312 if (irq_ptr
->is_thinint_irq
) {
3314 * that way we know, that, if we will get interrupted
3315 * by tiqdio_inbound_processing, qdio_unmark_q will
3318 qdio_reserve_q(irq_ptr
->input_qs
[i
]);
3319 qdio_mark_tiq(irq_ptr
->input_qs
[i
]);
3320 qdio_release_q(irq_ptr
->input_qs
[i
]);
3324 if (flags
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
) {
3325 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3326 irq_ptr
->input_qs
[i
]->is_input_q
|=
3327 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
;
3331 wait_event_interruptible_timeout(cdev
->private->wait_q
,
3333 QDIO_IRQ_STATE_STOPPED
) ||
3335 QDIO_IRQ_STATE_ERR
)),
3336 QDIO_ACTIVATE_TIMEOUT
);
3338 switch (irq_ptr
->state
) {
3339 case QDIO_IRQ_STATE_STOPPED
:
3340 case QDIO_IRQ_STATE_ERR
:
3341 up(&irq_ptr
->setting_up_sema
);
3342 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3343 down(&irq_ptr
->setting_up_sema
);
3347 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ACTIVE
);
3351 up(&irq_ptr
->setting_up_sema
);
3356 /* buffers filled forwards again to make Rick happy */
3358 qdio_do_qdio_fill_input(struct qdio_q
*q
, unsigned int qidx
,
3359 unsigned int count
, struct qdio_buffer
*buffers
)
3361 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3362 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3363 if (irq
->is_qebsm
) {
3365 set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3369 set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3372 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3377 qdio_do_qdio_fill_output(struct qdio_q
*q
, unsigned int qidx
,
3378 unsigned int count
, struct qdio_buffer
*buffers
)
3380 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3382 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3383 if (irq
->is_qebsm
) {
3385 set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3390 set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3393 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3398 do_qdio_handle_inbound(struct qdio_q
*q
, unsigned int callflags
,
3399 unsigned int qidx
, unsigned int count
,
3400 struct qdio_buffer
*buffers
)
3404 /* This is the inbound handling of queues */
3405 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3407 qdio_do_qdio_fill_input(q
,qidx
,count
,buffers
);
3409 if ((used_elements
+count
==QDIO_MAX_BUFFERS_PER_Q
)&&
3410 (callflags
&QDIO_FLAG_UNDER_INTERRUPT
))
3411 atomic_swap(&q
->polling
,0);
3415 if (callflags
&QDIO_FLAG_DONT_SIGA
)
3420 result
=qdio_siga_input(q
);
3423 q
->error_status_flags
|=
3424 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
3425 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
3426 q
->siga_error
=result
;
3434 do_qdio_handle_outbound(struct qdio_q
*q
, unsigned int callflags
,
3435 unsigned int qidx
, unsigned int count
,
3436 struct qdio_buffer
*buffers
)
3439 unsigned int cnt
, start_buf
;
3440 unsigned char state
= 0;
3441 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3443 /* This is the outbound handling of queues */
3444 #ifdef QDIO_PERFORMANCE_STATS
3445 perf_stats
.start_time_outbound
=NOW
;
3446 #endif /* QDIO_PERFORMANCE_STATS */
3448 qdio_do_qdio_fill_output(q
,qidx
,count
,buffers
);
3450 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3452 if (callflags
&QDIO_FLAG_DONT_SIGA
) {
3453 #ifdef QDIO_PERFORMANCE_STATS
3454 perf_stats
.outbound_time
+=NOW
-perf_stats
.start_time_outbound
;
3455 perf_stats
.outbound_cnt
++;
3456 #endif /* QDIO_PERFORMANCE_STATS */
3459 if (q
->is_iqdio_q
) {
3460 /* one siga for every sbal */
3462 qdio_kick_outbound_q(q
);
3464 __qdio_outbound_processing(q
);
3466 /* under VM, we do a SIGA sync unconditionally */
3470 * w/o shadow queues (else branch of
3471 * SYNC_MEMORY :-/ ), we try to
3472 * fast-requeue buffers
3474 if (irq
->is_qebsm
) {
3476 start_buf
= ((qidx
+QDIO_MAX_BUFFERS_PER_Q
-1) &
3477 (QDIO_MAX_BUFFERS_PER_Q
-1));
3478 qdio_do_eqbs(q
, &state
, &start_buf
, &cnt
);
3480 state
= q
->slsb
.acc
.val
[(qidx
+QDIO_MAX_BUFFERS_PER_Q
-1)
3481 &(QDIO_MAX_BUFFERS_PER_Q
-1) ];
3482 if (state
!= SLSB_CU_OUTPUT_PRIMED
) {
3483 qdio_kick_outbound_q(q
);
3485 QDIO_DBF_TEXT3(0,trace
, "fast-req");
3486 #ifdef QDIO_PERFORMANCE_STATS
3487 perf_stats
.fast_reqs
++;
3488 #endif /* QDIO_PERFORMANCE_STATS */
3492 * only marking the q could take too long,
3493 * the upper layer module could do a lot of
3494 * traffic in that time
3496 __qdio_outbound_processing(q
);
3499 #ifdef QDIO_PERFORMANCE_STATS
3500 perf_stats
.outbound_time
+=NOW
-perf_stats
.start_time_outbound
;
3501 perf_stats
.outbound_cnt
++;
3502 #endif /* QDIO_PERFORMANCE_STATS */
3505 /* count must be 1 in iqdio */
3507 do_QDIO(struct ccw_device
*cdev
,unsigned int callflags
,
3508 unsigned int queue_number
, unsigned int qidx
,
3509 unsigned int count
,struct qdio_buffer
*buffers
)
3511 struct qdio_irq
*irq_ptr
;
3512 #ifdef CONFIG_QDIO_DEBUG
3515 sprintf(dbf_text
,"doQD%04x",cdev
->private->sch_no
);
3516 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3517 #endif /* CONFIG_QDIO_DEBUG */
3519 if ( (qidx
>QDIO_MAX_BUFFERS_PER_Q
) ||
3520 (count
>QDIO_MAX_BUFFERS_PER_Q
) ||
3521 (queue_number
>QDIO_MAX_QUEUES_PER_IRQ
) )
3527 irq_ptr
= cdev
->private->qdio_data
;
3531 #ifdef CONFIG_QDIO_DEBUG
3532 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3533 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->input_qs
[queue_number
],
3536 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->output_qs
[queue_number
],
3538 sprintf(dbf_text
,"flag%04x",callflags
);
3539 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3540 sprintf(dbf_text
,"qi%02xct%02x",qidx
,count
);
3541 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3542 #endif /* CONFIG_QDIO_DEBUG */
3544 if (irq_ptr
->state
!=QDIO_IRQ_STATE_ACTIVE
)
3547 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3548 do_qdio_handle_inbound(irq_ptr
->input_qs
[queue_number
],
3549 callflags
, qidx
, count
, buffers
);
3550 else if (callflags
&QDIO_FLAG_SYNC_OUTPUT
)
3551 do_qdio_handle_outbound(irq_ptr
->output_qs
[queue_number
],
3552 callflags
, qidx
, count
, buffers
);
3554 QDIO_DBF_TEXT3(1,trace
,"doQD:inv");
3560 #ifdef QDIO_PERFORMANCE_STATS
3562 qdio_perf_procfile_read(char *buffer
, char **buffer_location
, off_t offset
,
3563 int buffer_length
, int *eof
, void *data
)
3567 /* we are always called with buffer_length=4k, so we all
3568 deliver on the first read */
3572 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3573 _OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc
,i_p_c
);
3574 _OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc
,ii_p_c
);
3575 _OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc
,o_p_c
);
3576 _OUTP_IT("Number of tasklet runs (total) : %u\n",
3577 perf_stats
.tl_runs
);
3579 _OUTP_IT("Number of SIGA sync's issued : %u\n",
3580 perf_stats
.siga_syncs
);
3581 _OUTP_IT("Number of SIGA in's issued : %u\n",
3582 perf_stats
.siga_ins
);
3583 _OUTP_IT("Number of SIGA out's issued : %u\n",
3584 perf_stats
.siga_outs
);
3585 _OUTP_IT("Number of PCIs caught : %u\n",
3587 _OUTP_IT("Number of adapter interrupts caught : %u\n",
3588 perf_stats
.thinints
);
3589 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %u\n",
3590 perf_stats
.fast_reqs
);
3592 _OUTP_IT("Total time of all inbound actions (us) incl. UL : %u\n",
3593 perf_stats
.inbound_time
);
3594 _OUTP_IT("Number of inbound transfers : %u\n",
3595 perf_stats
.inbound_cnt
);
3596 _OUTP_IT("Total time of all outbound do_QDIOs (us) : %u\n",
3597 perf_stats
.outbound_time
);
3598 _OUTP_IT("Number of do_QDIOs outbound : %u\n",
3599 perf_stats
.outbound_cnt
);
3605 static struct proc_dir_entry
*qdio_perf_proc_file
;
3606 #endif /* QDIO_PERFORMANCE_STATS */
3609 qdio_add_procfs_entry(void)
3611 #ifdef QDIO_PERFORMANCE_STATS
3612 proc_perf_file_registration
=0;
3613 qdio_perf_proc_file
=create_proc_entry(QDIO_PERF
,
3614 S_IFREG
|0444,&proc_root
);
3615 if (qdio_perf_proc_file
) {
3616 qdio_perf_proc_file
->read_proc
=&qdio_perf_procfile_read
;
3617 } else proc_perf_file_registration
=-1;
3619 if (proc_perf_file_registration
)
3620 QDIO_PRINT_WARN("was not able to register perf. " \
3621 "proc-file (%i).\n",
3622 proc_perf_file_registration
);
3623 #endif /* QDIO_PERFORMANCE_STATS */
3627 qdio_remove_procfs_entry(void)
3629 #ifdef QDIO_PERFORMANCE_STATS
3630 perf_stats
.tl_runs
=0;
3632 if (!proc_perf_file_registration
) /* means if it went ok earlier */
3633 remove_proc_entry(QDIO_PERF
,&proc_root
);
3634 #endif /* QDIO_PERFORMANCE_STATS */
3638 tiqdio_register_thinints(void)
3641 register_thinint_result
=
3642 s390_register_adapter_interrupt(&tiqdio_thinint_handler
);
3643 if (register_thinint_result
) {
3644 sprintf(dbf_text
,"regthn%x",(register_thinint_result
&0xff));
3645 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3646 QDIO_PRINT_ERR("failed to register adapter handler " \
3647 "(rc=%i).\nAdapter interrupts might " \
3648 "not work. Continuing.\n",
3649 register_thinint_result
);
3654 tiqdio_unregister_thinints(void)
3656 if (!register_thinint_result
)
3657 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler
);
3661 qdio_get_qdio_memory(void)
3664 indicator_used
[0]=1;
3666 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
3667 indicator_used
[i
]=0;
3668 indicators
=(__u32
*)kmalloc(sizeof(__u32
)*(INDICATORS_PER_CACHELINE
),
3670 if (!indicators
) return -ENOMEM
;
3671 memset(indicators
,0,sizeof(__u32
)*(INDICATORS_PER_CACHELINE
));
3676 qdio_release_qdio_memory(void)
3682 qdio_unregister_dbf_views(void)
3685 debug_unregister(qdio_dbf_setup
);
3687 debug_unregister(qdio_dbf_sbal
);
3689 debug_unregister(qdio_dbf_sense
);
3691 debug_unregister(qdio_dbf_trace
);
3692 #ifdef CONFIG_QDIO_DEBUG
3693 if (qdio_dbf_slsb_out
)
3694 debug_unregister(qdio_dbf_slsb_out
);
3695 if (qdio_dbf_slsb_in
)
3696 debug_unregister(qdio_dbf_slsb_in
);
3697 #endif /* CONFIG_QDIO_DEBUG */
3701 qdio_register_dbf_views(void)
3703 qdio_dbf_setup
=debug_register(QDIO_DBF_SETUP_NAME
,
3704 QDIO_DBF_SETUP_PAGES
,
3705 QDIO_DBF_SETUP_NR_AREAS
,
3706 QDIO_DBF_SETUP_LEN
);
3707 if (!qdio_dbf_setup
)
3709 debug_register_view(qdio_dbf_setup
,&debug_hex_ascii_view
);
3710 debug_set_level(qdio_dbf_setup
,QDIO_DBF_SETUP_LEVEL
);
3712 qdio_dbf_sbal
=debug_register(QDIO_DBF_SBAL_NAME
,
3713 QDIO_DBF_SBAL_PAGES
,
3714 QDIO_DBF_SBAL_NR_AREAS
,
3719 debug_register_view(qdio_dbf_sbal
,&debug_hex_ascii_view
);
3720 debug_set_level(qdio_dbf_sbal
,QDIO_DBF_SBAL_LEVEL
);
3722 qdio_dbf_sense
=debug_register(QDIO_DBF_SENSE_NAME
,
3723 QDIO_DBF_SENSE_PAGES
,
3724 QDIO_DBF_SENSE_NR_AREAS
,
3725 QDIO_DBF_SENSE_LEN
);
3726 if (!qdio_dbf_sense
)
3729 debug_register_view(qdio_dbf_sense
,&debug_hex_ascii_view
);
3730 debug_set_level(qdio_dbf_sense
,QDIO_DBF_SENSE_LEVEL
);
3732 qdio_dbf_trace
=debug_register(QDIO_DBF_TRACE_NAME
,
3733 QDIO_DBF_TRACE_PAGES
,
3734 QDIO_DBF_TRACE_NR_AREAS
,
3735 QDIO_DBF_TRACE_LEN
);
3736 if (!qdio_dbf_trace
)
3739 debug_register_view(qdio_dbf_trace
,&debug_hex_ascii_view
);
3740 debug_set_level(qdio_dbf_trace
,QDIO_DBF_TRACE_LEVEL
);
3742 #ifdef CONFIG_QDIO_DEBUG
3743 qdio_dbf_slsb_out
=debug_register(QDIO_DBF_SLSB_OUT_NAME
,
3744 QDIO_DBF_SLSB_OUT_PAGES
,
3745 QDIO_DBF_SLSB_OUT_NR_AREAS
,
3746 QDIO_DBF_SLSB_OUT_LEN
);
3747 if (!qdio_dbf_slsb_out
)
3749 debug_register_view(qdio_dbf_slsb_out
,&debug_hex_ascii_view
);
3750 debug_set_level(qdio_dbf_slsb_out
,QDIO_DBF_SLSB_OUT_LEVEL
);
3752 qdio_dbf_slsb_in
=debug_register(QDIO_DBF_SLSB_IN_NAME
,
3753 QDIO_DBF_SLSB_IN_PAGES
,
3754 QDIO_DBF_SLSB_IN_NR_AREAS
,
3755 QDIO_DBF_SLSB_IN_LEN
);
3756 if (!qdio_dbf_slsb_in
)
3758 debug_register_view(qdio_dbf_slsb_in
,&debug_hex_ascii_view
);
3759 debug_set_level(qdio_dbf_slsb_in
,QDIO_DBF_SLSB_IN_LEVEL
);
3760 #endif /* CONFIG_QDIO_DEBUG */
3763 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3764 qdio_unregister_dbf_views();
3772 #ifdef QDIO_PERFORMANCE_STATS
3774 #endif /* QDIO_PERFORMANCE_STATS */
3776 printk("qdio: loading %s\n",version
);
3778 res
=qdio_get_qdio_memory();
3782 res
= qdio_register_dbf_views();
3786 QDIO_DBF_TEXT0(0,setup
,"initQDIO");
3788 #ifdef QDIO_PERFORMANCE_STATS
3789 memset((void*)&perf_stats
,0,sizeof(perf_stats
));
3790 QDIO_DBF_TEXT0(0,setup
,"perfstat");
3792 QDIO_DBF_HEX0(0,setup
,&ptr
,sizeof(void*));
3793 #endif /* QDIO_PERFORMANCE_STATS */
3795 qdio_add_procfs_entry();
3797 if (tiqdio_check_chsc_availability())
3798 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3800 tiqdio_register_thinints();
3808 tiqdio_unregister_thinints();
3809 qdio_remove_procfs_entry();
3810 qdio_release_qdio_memory();
3811 qdio_unregister_dbf_views();
3813 printk("qdio: %s: module removed\n",version
);
3816 module_init(init_QDIO
);
3817 module_exit(cleanup_QDIO
);
3819 EXPORT_SYMBOL(qdio_allocate
);
3820 EXPORT_SYMBOL(qdio_establish
);
3821 EXPORT_SYMBOL(qdio_initialize
);
3822 EXPORT_SYMBOL(qdio_activate
);
3823 EXPORT_SYMBOL(do_QDIO
);
3824 EXPORT_SYMBOL(qdio_shutdown
);
3825 EXPORT_SYMBOL(qdio_free
);
3826 EXPORT_SYMBOL(qdio_cleanup
);
3827 EXPORT_SYMBOL(qdio_synchronize
);