3 * linux/drivers/s390/cio/qdio.c
5 * Linux for S/390 QDIO base support, Hipersocket base support
8 * Copyright 2000,2002 IBM Corporation
9 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
10 * 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
12 * Restriction: only 63 iqdio subchannels would have its own indicator,
13 * after that, subsequent subchannels share one indicator
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2, or (at your option)
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 #include <linux/module.h>
34 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/kernel.h>
38 #include <linux/proc_fs.h>
39 #include <linux/timer.h>
40 #include <linux/mempool.h>
42 #include <asm/ccwdev.h>
44 #include <asm/atomic.h>
45 #include <asm/semaphore.h>
46 #include <asm/timex.h>
48 #include <asm/debug.h>
49 #include <asm/s390_rdev.h>
60 /****************** MODULE PARAMETER VARIABLES ********************/
61 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
62 MODULE_DESCRIPTION("QDIO base support version 2, " \
63 "Copyright 2000 IBM Corporation");
64 MODULE_LICENSE("GPL");
66 /******************** HERE WE GO ***********************************/
68 static const char version
[] = "QDIO base support version 2";
69 extern struct bus_type ccw_bus_type
;
71 static int qdio_performance_stats
= 0;
72 static int proc_perf_file_registration
;
73 static unsigned long i_p_c
, i_p_nc
, o_p_c
, o_p_nc
, ii_p_c
, ii_p_nc
;
74 static struct qdio_perf_stats perf_stats
;
76 static int hydra_thinints
;
77 static int is_passthrough
= 0;
80 static int indicator_used
[INDICATORS_PER_CACHELINE
];
81 static __u32
* volatile indicators
;
82 static __u32
volatile spare_indicator
;
83 static atomic_t spare_indicator_usecount
;
84 #define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
85 static mempool_t
*qdio_mempool_scssc
;
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() >> 12); /* 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
;
172 ccq
= do_eqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
173 rc
= qdio_check_ccq(q
, ccq
);
175 QDIO_DBF_TEXT5(1,trace
,"eqAGAIN");
179 QDIO_DBF_TEXT2(1,trace
,"eqberr");
180 sprintf(dbf_text
,"%2x,%2x,%d,%d",tmp_cnt
, *cnt
, ccq
, q_no
);
181 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
182 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
183 QDIO_STATUS_LOOK_FOR_ERROR
,
184 0, 0, 0, -1, -1, q
->int_parm
);
187 return (tmp_cnt
- *cnt
);
190 /* SQBS: set buffer states */
192 qdio_do_sqbs(struct qdio_q
*q
, unsigned char state
,
193 unsigned int *start
, unsigned int *cnt
)
195 struct qdio_irq
*irq
;
196 unsigned int tmp_cnt
, q_no
, ccq
;
202 irq
= (struct qdio_irq
*)q
->irq_ptr
;
205 q_no
+= irq
->no_input_qs
;
207 ccq
= do_sqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
208 rc
= qdio_check_ccq(q
, ccq
);
210 QDIO_DBF_TEXT5(1,trace
,"sqAGAIN");
214 QDIO_DBF_TEXT3(1,trace
,"sqberr");
215 sprintf(dbf_text
,"%2x,%2x,%d,%d",tmp_cnt
,*cnt
,ccq
,q_no
);
216 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
217 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
218 QDIO_STATUS_LOOK_FOR_ERROR
,
219 0, 0, 0, -1, -1, q
->int_parm
);
222 return (tmp_cnt
- *cnt
);
226 qdio_set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
227 unsigned char state
, unsigned int *count
)
230 struct qdio_irq
*irq
;
232 irq
= (struct qdio_irq
*)q
->irq_ptr
;
233 if (!irq
->is_qebsm
) {
234 slsb
= (char *)&q
->slsb
.acc
.val
[(*bufno
)];
238 return qdio_do_sqbs(q
, state
, bufno
, count
);
241 #ifdef CONFIG_QDIO_DEBUG
243 qdio_trace_slsb(struct qdio_q
*q
)
245 if (q
->queue_type
==QDIO_TRACE_QTYPE
) {
247 QDIO_DBF_HEX2(0,slsb_in
,&q
->slsb
,
248 QDIO_MAX_BUFFERS_PER_Q
);
250 QDIO_DBF_HEX2(0,slsb_out
,&q
->slsb
,
251 QDIO_MAX_BUFFERS_PER_Q
);
257 set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
258 unsigned char state
, unsigned int *count
)
261 #ifdef CONFIG_QDIO_DEBUG
264 rc
= qdio_set_slsb(q
, bufno
, state
, count
);
265 #ifdef CONFIG_QDIO_DEBUG
271 qdio_siga_sync(struct qdio_q
*q
, unsigned int gpr2
,
276 QDIO_DBF_TEXT4(0,trace
,"sigasync");
277 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
279 if (qdio_performance_stats
)
280 perf_stats
.siga_syncs
++;
282 cc
= do_siga_sync(q
->schid
, gpr2
, gpr3
);
284 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
290 qdio_siga_sync_q(struct qdio_q
*q
)
293 return qdio_siga_sync(q
, 0, q
->mask
);
294 return qdio_siga_sync(q
, q
->mask
, 0);
298 __do_siga_output(struct qdio_q
*q
, unsigned int *busy_bit
)
300 struct qdio_irq
*irq
;
304 irq
= (struct qdio_irq
*) q
->irq_ptr
;
306 schid
= *((u32
*)&q
->schid
);
308 schid
= irq
->sch_token
;
311 return do_siga_output(schid
, q
->mask
, busy_bit
, fc
);
315 * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
316 * an access exception
319 qdio_siga_output(struct qdio_q
*q
)
325 if (qdio_performance_stats
)
326 perf_stats
.siga_outs
++;
328 QDIO_DBF_TEXT4(0,trace
,"sigaout");
329 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
332 cc
= __do_siga_output(q
, &busy_bit
);
333 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
334 if ((cc
==2) && (busy_bit
) && (q
->is_iqdio_q
)) {
337 if ((NOW
-start_time
)>QDIO_BUSY_BIT_PATIENCE
)
343 if ((cc
==2) && (busy_bit
))
344 cc
|= QDIO_SIGA_ERROR_B_BIT_SET
;
347 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
353 qdio_siga_input(struct qdio_q
*q
)
357 QDIO_DBF_TEXT4(0,trace
,"sigain");
358 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
360 if (qdio_performance_stats
)
361 perf_stats
.siga_ins
++;
363 cc
= do_siga_input(q
->schid
, q
->mask
);
366 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
371 /* locked by the locks in qdio_activate and qdio_cleanup */
373 qdio_get_indicator(void)
377 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
378 if (!indicator_used
[i
]) {
382 atomic_inc(&spare_indicator_usecount
);
383 return (__u32
* volatile) &spare_indicator
;
386 /* locked by the locks in qdio_activate and qdio_cleanup */
388 qdio_put_indicator(__u32
*addr
)
392 if ( (addr
) && (addr
!=&spare_indicator
) ) {
396 if (addr
== &spare_indicator
)
397 atomic_dec(&spare_indicator_usecount
);
401 tiqdio_clear_summary_bit(__u32
*location
)
403 QDIO_DBF_TEXT5(0,trace
,"clrsummb");
404 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
410 tiqdio_set_summary_bit(__u32
*location
)
412 QDIO_DBF_TEXT5(0,trace
,"setsummb");
413 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
419 tiqdio_sched_tl(void)
421 tasklet_hi_schedule(&tiqdio_tasklet
);
425 qdio_mark_tiq(struct qdio_q
*q
)
429 QDIO_DBF_TEXT4(0,trace
,"mark iq");
430 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
432 spin_lock_irqsave(&ttiq_list_lock
,flags
);
433 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
439 if ((q
->list_prev
) || (q
->list_next
))
447 q
->list_next
=tiq_list
;
448 q
->list_prev
=tiq_list
->list_prev
;
449 tiq_list
->list_prev
->list_next
=q
;
450 tiq_list
->list_prev
=q
;
452 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
454 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
458 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
463 qdio_mark_q(struct qdio_q
*q
)
465 QDIO_DBF_TEXT4(0,trace
,"mark q");
466 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
468 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
471 tasklet_schedule(&q
->tasklet
);
475 qdio_stop_polling(struct qdio_q
*q
)
477 #ifdef QDIO_USE_PROCESSING_STATE
478 unsigned int tmp
, gsf
, count
= 1;
479 unsigned char state
= 0;
480 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
482 if (!atomic_xchg(&q
->polling
,0))
485 QDIO_DBF_TEXT4(0,trace
,"stoppoll");
486 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
488 /* show the card that we are not polling anymore */
492 tmp
= gsf
= GET_SAVED_FRONTIER(q
);
493 tmp
= ((tmp
+ QDIO_MAX_BUFFERS_PER_Q
-1) & (QDIO_MAX_BUFFERS_PER_Q
-1) );
494 set_slsb(q
, &tmp
, SLSB_P_INPUT_NOT_INIT
, &count
);
497 * we don't issue this SYNC_MEMORY, as we trust Rick T and
498 * moreover will not use the PROCESSING state under VM, so
499 * q->polling was 0 anyway
504 qdio_do_eqbs(q
, &state
, &gsf
, &count
);
506 state
= q
->slsb
.acc
.val
[gsf
];
507 if (state
!= SLSB_P_INPUT_PRIMED
)
510 * set our summary bit again, as otherwise there is a
511 * small window we can miss between resetting it and
512 * checking for PRIMED state
515 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
518 #else /* QDIO_USE_PROCESSING_STATE */
520 #endif /* QDIO_USE_PROCESSING_STATE */
524 * see the comment in do_QDIO and before qdio_reserve_q about the
525 * sophisticated locking outside of unmark_q, so that we don't need to
526 * disable the interrupts :-)
529 qdio_unmark_q(struct qdio_q
*q
)
533 QDIO_DBF_TEXT4(0,trace
,"unmark q");
534 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
536 if ((!q
->list_prev
)||(!q
->list_next
))
539 if ((q
->is_thinint_q
)&&(q
->is_input_q
)) {
541 spin_lock_irqsave(&ttiq_list_lock
,flags
);
542 /* in case cleanup has done this already and simultanously
543 * qdio_unmark_q is called from the interrupt handler, we've
544 * got to check this in this specific case again */
545 if ((!q
->list_prev
)||(!q
->list_next
))
547 if (q
->list_next
==q
) {
548 /* q was the only interesting q */
553 q
->list_next
->list_prev
=q
->list_prev
;
554 q
->list_prev
->list_next
=q
->list_next
;
555 tiq_list
=q
->list_next
;
560 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
564 static inline unsigned long
565 tiqdio_clear_global_summary(void)
569 QDIO_DBF_TEXT5(0,trace
,"clrglobl");
571 time
= do_clear_global_summary();
573 QDIO_DBF_HEX5(0,trace
,&time
,sizeof(unsigned long));
579 /************************* OUTBOUND ROUTINES *******************************/
581 qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q
*q
)
583 struct qdio_irq
*irq
;
585 unsigned int cnt
, count
, ftc
;
587 irq
= (struct qdio_irq
*) q
->irq_ptr
;
588 if ((!q
->is_iqdio_q
) && (!q
->hydra_gives_outbound_pcis
))
591 ftc
= q
->first_to_check
;
592 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
593 (QDIO_MAX_BUFFERS_PER_Q
-1));
595 return q
->first_to_check
;
596 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
598 return q
->first_to_check
;
600 case SLSB_P_OUTPUT_ERROR
:
601 QDIO_DBF_TEXT3(0,trace
,"outperr");
602 atomic_sub(cnt
, &q
->number_of_buffers_used
);
604 q
->error_status_flags
|=
605 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
606 q
->qdio_error
= SLSB_P_OUTPUT_ERROR
;
607 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
608 q
->first_to_check
= ftc
;
610 case SLSB_P_OUTPUT_EMPTY
:
611 QDIO_DBF_TEXT5(0,trace
,"outpempt");
612 atomic_sub(cnt
, &q
->number_of_buffers_used
);
613 q
->first_to_check
= ftc
;
615 case SLSB_CU_OUTPUT_PRIMED
:
616 /* all buffers primed */
617 QDIO_DBF_TEXT5(0,trace
,"outpprim");
622 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
623 return q
->first_to_check
;
627 qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q
*q
)
629 struct qdio_irq
*irq
;
631 int tmp
, ftc
, count
, cnt
;
635 irq
= (struct qdio_irq
*) q
->irq_ptr
;
636 ftc
= q
->first_to_check
;
637 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
638 (QDIO_MAX_BUFFERS_PER_Q
-1));
640 return q
->first_to_check
;
641 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
643 return q
->first_to_check
;
645 case SLSB_P_INPUT_ERROR
:
646 #ifdef CONFIG_QDIO_DEBUG
647 QDIO_DBF_TEXT3(1,trace
,"inperr");
648 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
649 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
650 #endif /* CONFIG_QDIO_DEBUG */
652 q
->error_status_flags
|=
653 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
654 q
->qdio_error
= SLSB_P_INPUT_ERROR
;
655 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
656 atomic_sub(cnt
, &q
->number_of_buffers_used
);
657 q
->first_to_check
= ftc
;
659 case SLSB_P_INPUT_PRIMED
:
660 QDIO_DBF_TEXT3(0,trace
,"inptprim");
661 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
662 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
664 ftc
= q
->first_to_check
;
665 #ifdef QDIO_USE_PROCESSING_STATE
668 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
673 tmp
+= set_slsb(q
, &ftc
,
674 SLSB_P_INPUT_PROCESSING
, &cnt
);
675 atomic_set(&q
->polling
, 1);
677 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
679 atomic_sub(tmp
, &q
->number_of_buffers_used
);
680 q
->first_to_check
= ftc
;
682 case SLSB_CU_INPUT_EMPTY
:
683 case SLSB_P_INPUT_NOT_INIT
:
684 case SLSB_P_INPUT_PROCESSING
:
685 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
690 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
691 return q
->first_to_check
;
695 qdio_get_outbound_buffer_frontier(struct qdio_q
*q
)
697 struct qdio_irq
*irq
;
699 unsigned int count
= 1;
700 int first_not_to_check
, f
, f_mod_no
;
703 QDIO_DBF_TEXT4(0,trace
,"getobfro");
704 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
706 irq
= (struct qdio_irq
*) q
->irq_ptr
;
708 return qdio_qebsm_get_outbound_buffer_frontier(q
);
710 slsb
=&q
->slsb
.acc
.val
[0];
711 f_mod_no
=f
=q
->first_to_check
;
713 * f points to already processed elements, so f+no_used is correct...
714 * ... but: we don't check 128 buffers, as otherwise
715 * qdio_has_outbound_q_moved would return 0
717 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
718 (QDIO_MAX_BUFFERS_PER_Q
-1));
720 if ((!q
->is_iqdio_q
)&&(!q
->hydra_gives_outbound_pcis
))
724 if (f
==first_not_to_check
)
727 switch(slsb
[f_mod_no
]) {
729 /* the adapter has not fetched the output yet */
730 case SLSB_CU_OUTPUT_PRIMED
:
731 QDIO_DBF_TEXT5(0,trace
,"outpprim");
734 /* the adapter got it */
735 case SLSB_P_OUTPUT_EMPTY
:
736 atomic_dec(&q
->number_of_buffers_used
);
738 f_mod_no
=f
&(QDIO_MAX_BUFFERS_PER_Q
-1);
739 QDIO_DBF_TEXT5(0,trace
,"outpempt");
742 case SLSB_P_OUTPUT_ERROR
:
743 QDIO_DBF_TEXT3(0,trace
,"outperr");
744 sprintf(dbf_text
,"%x-%x-%x",f_mod_no
,
745 q
->sbal
[f_mod_no
]->element
[14].sbalf
.value
,
746 q
->sbal
[f_mod_no
]->element
[15].sbalf
.value
);
747 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
748 QDIO_DBF_HEX2(1,sbal
,q
->sbal
[f_mod_no
],256);
750 /* kind of process the buffer */
751 set_slsb(q
, &f_mod_no
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
754 * we increment the frontier, as this buffer
755 * was processed obviously
757 atomic_dec(&q
->number_of_buffers_used
);
758 f_mod_no
=(f_mod_no
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
761 q
->error_status_flags
|=
762 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
763 q
->qdio_error
=SLSB_P_OUTPUT_ERROR
;
764 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
770 QDIO_DBF_TEXT5(0,trace
,"outpni");
773 return (q
->first_to_check
=f_mod_no
);
776 /* all buffers are processed */
778 qdio_is_outbound_q_done(struct qdio_q
*q
)
781 #ifdef CONFIG_QDIO_DEBUG
785 no_used
=atomic_read(&q
->number_of_buffers_used
);
787 #ifdef CONFIG_QDIO_DEBUG
789 sprintf(dbf_text
,"oqisnt%02x",no_used
);
790 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
792 QDIO_DBF_TEXT4(0,trace
,"oqisdone");
794 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
795 #endif /* CONFIG_QDIO_DEBUG */
800 qdio_has_outbound_q_moved(struct qdio_q
*q
)
804 i
=qdio_get_outbound_buffer_frontier(q
);
806 if ( (i
!=GET_SAVED_FRONTIER(q
)) ||
807 (q
->error_status_flags
&QDIO_STATUS_LOOK_FOR_ERROR
) ) {
809 QDIO_DBF_TEXT4(0,trace
,"oqhasmvd");
810 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
813 QDIO_DBF_TEXT4(0,trace
,"oqhsntmv");
814 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
820 qdio_kick_outbound_q(struct qdio_q
*q
)
823 #ifdef CONFIG_QDIO_DEBUG
826 QDIO_DBF_TEXT4(0,trace
,"kickoutq");
827 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
828 #endif /* CONFIG_QDIO_DEBUG */
833 /* here's the story with cc=2 and busy bit set (thanks, Rick):
834 * VM's CP could present us cc=2 and busy bit set on SIGA-write
835 * during reconfiguration of their Guest LAN (only in HIPERS mode,
836 * QDIO mode is asynchronous -- cc=2 and busy bit there will take
837 * the queues down immediately; and not being under VM we have a
838 * problem on cc=2 and busy bit set right away).
840 * Therefore qdio_siga_output will try for a short time constantly,
841 * if such a condition occurs. If it doesn't change, it will
842 * increase the busy_siga_counter and save the timestamp, and
843 * schedule the queue for later processing (via mark_q, using the
844 * queue tasklet). __qdio_outbound_processing will check out the
845 * counter. If non-zero, it will call qdio_kick_outbound_q as often
846 * as the value of the counter. This will attempt further SIGA
847 * instructions. For each successful SIGA, the counter is
848 * decreased, for failing SIGAs the counter remains the same, after
850 * After some time of no movement, qdio_kick_outbound_q will
851 * finally fail and reflect corresponding error codes to call
852 * the upper layer module and have it take the queues down.
854 * Note that this is a change from the original HiperSockets design
855 * (saying cc=2 and busy bit means take the queues down), but in
856 * these days Guest LAN didn't exist... excessive cc=2 with busy bit
857 * conditions will still take the queues down, but the threshold is
858 * higher due to the Guest LAN environment.
862 result
=qdio_siga_output(q
);
866 /* went smooth this time, reset timestamp */
867 #ifdef CONFIG_QDIO_DEBUG
868 QDIO_DBF_TEXT3(0,trace
,"cc2reslv");
869 sprintf(dbf_text
,"%4x%2x%2x",q
->schid
.sch_no
,q
->q_no
,
870 atomic_read(&q
->busy_siga_counter
));
871 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
872 #endif /* CONFIG_QDIO_DEBUG */
873 q
->timing
.busy_start
=0;
875 case (2|QDIO_SIGA_ERROR_B_BIT_SET
):
876 /* cc=2 and busy bit: */
877 atomic_inc(&q
->busy_siga_counter
);
879 /* if the last siga was successful, save
881 if (!q
->timing
.busy_start
)
882 q
->timing
.busy_start
=NOW
;
884 /* if we're in time, don't touch error_status_flags
886 if (NOW
-q
->timing
.busy_start
<QDIO_BUSY_BIT_GIVE_UP
) {
890 QDIO_DBF_TEXT2(0,trace
,"cc2REPRT");
891 #ifdef CONFIG_QDIO_DEBUG
892 sprintf(dbf_text
,"%4x%2x%2x",q
->schid
.sch_no
,q
->q_no
,
893 atomic_read(&q
->busy_siga_counter
));
894 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
895 #endif /* CONFIG_QDIO_DEBUG */
896 /* else fallthrough and report error */
898 /* for plain cc=1, 2 or 3: */
900 q
->error_status_flags
|=
901 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
902 q
->error_status_flags
|=
903 QDIO_STATUS_LOOK_FOR_ERROR
;
904 q
->siga_error
=result
;
909 qdio_kick_outbound_handler(struct qdio_q
*q
)
911 int start
, end
, real_end
, count
;
912 #ifdef CONFIG_QDIO_DEBUG
916 start
= q
->first_element_to_kick
;
917 /* last_move_ftc was just updated */
918 real_end
= GET_SAVED_FRONTIER(q
);
919 end
= (real_end
+QDIO_MAX_BUFFERS_PER_Q
-1)&
920 (QDIO_MAX_BUFFERS_PER_Q
-1);
921 count
= (end
+QDIO_MAX_BUFFERS_PER_Q
+1-start
)&
922 (QDIO_MAX_BUFFERS_PER_Q
-1);
924 #ifdef CONFIG_QDIO_DEBUG
925 QDIO_DBF_TEXT4(0,trace
,"kickouth");
926 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
928 sprintf(dbf_text
,"s=%2xc=%2x",start
,count
);
929 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
930 #endif /* CONFIG_QDIO_DEBUG */
932 if (q
->state
==QDIO_IRQ_STATE_ACTIVE
)
933 q
->handler(q
->cdev
,QDIO_STATUS_OUTBOUND_INT
|
934 q
->error_status_flags
,
935 q
->qdio_error
,q
->siga_error
,q
->q_no
,start
,count
,
938 /* for the next time: */
939 q
->first_element_to_kick
=real_end
;
942 q
->error_status_flags
=0;
946 __qdio_outbound_processing(struct qdio_q
*q
)
950 QDIO_DBF_TEXT4(0,trace
,"qoutproc");
951 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
953 if (unlikely(qdio_reserve_q(q
))) {
955 if (qdio_performance_stats
)
957 /* as we're sissies, we'll check next time */
958 if (likely(!atomic_read(&q
->is_in_shutdown
))) {
960 QDIO_DBF_TEXT4(0,trace
,"busy,agn");
964 if (qdio_performance_stats
) {
966 perf_stats
.tl_runs
++;
969 /* see comment in qdio_kick_outbound_q */
970 siga_attempts
=atomic_read(&q
->busy_siga_counter
);
971 while (siga_attempts
) {
972 atomic_dec(&q
->busy_siga_counter
);
973 qdio_kick_outbound_q(q
);
977 if (qdio_has_outbound_q_moved(q
))
978 qdio_kick_outbound_handler(q
);
982 * for asynchronous queues, we better check, if the sent
983 * buffer is already switched from PRIMED to EMPTY.
985 if ((q
->queue_type
== QDIO_IQDIO_QFMT_ASYNCH
) &&
986 !qdio_is_outbound_q_done(q
))
989 } else if (!q
->hydra_gives_outbound_pcis
)
990 if (!qdio_is_outbound_q_done(q
))
997 qdio_outbound_processing(struct qdio_q
*q
)
999 __qdio_outbound_processing(q
);
1002 /************************* INBOUND ROUTINES *******************************/
1006 qdio_get_inbound_buffer_frontier(struct qdio_q
*q
)
1008 struct qdio_irq
*irq
;
1010 volatile char *slsb
;
1011 unsigned int count
= 1;
1012 int first_not_to_check
;
1013 #ifdef CONFIG_QDIO_DEBUG
1015 #endif /* CONFIG_QDIO_DEBUG */
1016 #ifdef QDIO_USE_PROCESSING_STATE
1017 int last_position
=-1;
1018 #endif /* QDIO_USE_PROCESSING_STATE */
1020 QDIO_DBF_TEXT4(0,trace
,"getibfro");
1021 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1023 irq
= (struct qdio_irq
*) q
->irq_ptr
;
1025 return qdio_qebsm_get_inbound_buffer_frontier(q
);
1027 slsb
=&q
->slsb
.acc
.val
[0];
1028 f_mod_no
=f
=q
->first_to_check
;
1030 * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1033 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
1034 (QDIO_MAX_BUFFERS_PER_Q
-1));
1037 * we don't use this one, as a PCI or we after a thin interrupt
1038 * will sync the queues
1043 f_mod_no
=f
&(QDIO_MAX_BUFFERS_PER_Q
-1);
1044 if (f
==first_not_to_check
)
1046 switch (slsb
[f_mod_no
]) {
1048 /* CU_EMPTY means frontier is reached */
1049 case SLSB_CU_INPUT_EMPTY
:
1050 QDIO_DBF_TEXT5(0,trace
,"inptempt");
1053 /* P_PRIMED means set slsb to P_PROCESSING and move on */
1054 case SLSB_P_INPUT_PRIMED
:
1055 QDIO_DBF_TEXT5(0,trace
,"inptprim");
1057 #ifdef QDIO_USE_PROCESSING_STATE
1059 * as soon as running under VM, polling the input queues will
1060 * kill VM in terms of CP overhead
1063 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1065 /* set the previous buffer to NOT_INIT. The current
1066 * buffer will be set to PROCESSING at the end of
1067 * this function to avoid further interrupts. */
1068 if (last_position
>=0)
1069 set_slsb(q
, &last_position
,
1070 SLSB_P_INPUT_NOT_INIT
, &count
);
1071 atomic_set(&q
->polling
,1);
1072 last_position
=f_mod_no
;
1074 #else /* QDIO_USE_PROCESSING_STATE */
1075 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1076 #endif /* QDIO_USE_PROCESSING_STATE */
1078 * not needed, as the inbound queue will be synced on the next
1079 * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1083 atomic_dec(&q
->number_of_buffers_used
);
1086 case SLSB_P_INPUT_NOT_INIT
:
1087 case SLSB_P_INPUT_PROCESSING
:
1088 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
1091 /* P_ERROR means frontier is reached, break and report error */
1092 case SLSB_P_INPUT_ERROR
:
1093 #ifdef CONFIG_QDIO_DEBUG
1094 sprintf(dbf_text
,"inperr%2x",f_mod_no
);
1095 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
1096 #endif /* CONFIG_QDIO_DEBUG */
1097 QDIO_DBF_HEX2(1,sbal
,q
->sbal
[f_mod_no
],256);
1099 /* kind of process the buffer */
1100 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1103 q
->error_status_flags
|=
1104 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
1105 q
->qdio_error
=SLSB_P_INPUT_ERROR
;
1106 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
1108 /* we increment the frontier, as this buffer
1109 * was processed obviously */
1110 f_mod_no
=(f_mod_no
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1111 atomic_dec(&q
->number_of_buffers_used
);
1113 #ifdef QDIO_USE_PROCESSING_STATE
1115 #endif /* QDIO_USE_PROCESSING_STATE */
1119 /* everything else means frontier not changed (HALTED or so) */
1124 q
->first_to_check
=f_mod_no
;
1126 #ifdef QDIO_USE_PROCESSING_STATE
1127 if (last_position
>=0)
1128 set_slsb(q
, &last_position
, SLSB_P_INPUT_PROCESSING
, &count
);
1129 #endif /* QDIO_USE_PROCESSING_STATE */
1131 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
1133 return q
->first_to_check
;
1137 qdio_has_inbound_q_moved(struct qdio_q
*q
)
1141 static int old_pcis
=0;
1142 static int old_thinints
=0;
1144 if (qdio_performance_stats
) {
1145 if ((old_pcis
==perf_stats
.pcis
)&&
1146 (old_thinints
==perf_stats
.thinints
))
1147 perf_stats
.start_time_inbound
=NOW
;
1149 old_pcis
=perf_stats
.pcis
;
1152 i
=qdio_get_inbound_buffer_frontier(q
);
1153 if ( (i
!=GET_SAVED_FRONTIER(q
)) ||
1154 (q
->error_status_flags
&QDIO_STATUS_LOOK_FOR_ERROR
) ) {
1156 if ((!q
->siga_sync
)&&(!q
->hydra_gives_outbound_pcis
))
1159 QDIO_DBF_TEXT4(0,trace
,"inhasmvd");
1160 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1163 QDIO_DBF_TEXT4(0,trace
,"inhsntmv");
1164 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1169 /* means, no more buffers to be filled */
1171 tiqdio_is_inbound_q_done(struct qdio_q
*q
)
1174 unsigned int start_buf
, count
;
1175 unsigned char state
= 0;
1176 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1178 #ifdef CONFIG_QDIO_DEBUG
1182 no_used
=atomic_read(&q
->number_of_buffers_used
);
1184 /* propagate the change from 82 to 80 through VM */
1187 #ifdef CONFIG_QDIO_DEBUG
1189 sprintf(dbf_text
,"iqisnt%02x",no_used
);
1190 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1192 QDIO_DBF_TEXT4(0,trace
,"iniqisdo");
1194 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1195 #endif /* CONFIG_QDIO_DEBUG */
1199 if (!q
->siga_sync
&& !irq
->is_qebsm
)
1200 /* we'll check for more primed buffers in qeth_stop_polling */
1202 if (irq
->is_qebsm
) {
1204 start_buf
= q
->first_to_check
;
1205 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1207 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1208 if (state
!= SLSB_P_INPUT_PRIMED
)
1210 * nothing more to do, if next buffer is not PRIMED.
1211 * note that we did a SYNC_MEMORY before, that there
1212 * has been a sychnronization.
1213 * we will return 0 below, as there is nothing to do
1214 * (stop_polling not necessary, as we have not been
1215 * using the PROCESSING state
1220 * ok, the next input buffer is primed. that means, that device state
1221 * change indicator and adapter local summary are set, so we will find
1223 * we will return 0 below, as there is nothing to do, except scheduling
1224 * ourselves for the next time.
1226 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1232 qdio_is_inbound_q_done(struct qdio_q
*q
)
1235 unsigned int start_buf
, count
;
1236 unsigned char state
= 0;
1237 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1239 #ifdef CONFIG_QDIO_DEBUG
1243 no_used
=atomic_read(&q
->number_of_buffers_used
);
1246 * we need that one for synchronization with the adapter, as it
1247 * does a kind of PCI avoidance
1252 QDIO_DBF_TEXT4(0,trace
,"inqisdnA");
1253 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1254 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1257 if (irq
->is_qebsm
) {
1259 start_buf
= q
->first_to_check
;
1260 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1262 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1263 if (state
== SLSB_P_INPUT_PRIMED
) {
1264 /* we got something to do */
1265 QDIO_DBF_TEXT4(0,trace
,"inqisntA");
1266 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1270 /* on VM, we don't poll, so the q is always done here */
1273 if (q
->hydra_gives_outbound_pcis
)
1277 * at this point we know, that inbound first_to_check
1278 * has (probably) not moved (see qdio_inbound_processing)
1280 if (NOW
>GET_SAVED_TIMESTAMP(q
)+q
->timing
.threshold
) {
1281 #ifdef CONFIG_QDIO_DEBUG
1282 QDIO_DBF_TEXT4(0,trace
,"inqisdon");
1283 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1284 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1285 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1286 #endif /* CONFIG_QDIO_DEBUG */
1289 #ifdef CONFIG_QDIO_DEBUG
1290 QDIO_DBF_TEXT4(0,trace
,"inqisntd");
1291 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1292 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1293 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1294 #endif /* CONFIG_QDIO_DEBUG */
1300 qdio_kick_inbound_handler(struct qdio_q
*q
)
1302 int count
, start
, end
, real_end
, i
;
1303 #ifdef CONFIG_QDIO_DEBUG
1307 QDIO_DBF_TEXT4(0,trace
,"kickinh");
1308 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1310 start
=q
->first_element_to_kick
;
1311 real_end
=q
->first_to_check
;
1312 end
=(real_end
+QDIO_MAX_BUFFERS_PER_Q
-1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1320 i
=(i
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1323 #ifdef CONFIG_QDIO_DEBUG
1324 sprintf(dbf_text
,"s=%2xc=%2x",start
,count
);
1325 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1326 #endif /* CONFIG_QDIO_DEBUG */
1328 if (likely(q
->state
==QDIO_IRQ_STATE_ACTIVE
))
1330 QDIO_STATUS_INBOUND_INT
|q
->error_status_flags
,
1331 q
->qdio_error
,q
->siga_error
,q
->q_no
,start
,count
,
1334 /* for the next time: */
1335 q
->first_element_to_kick
=real_end
;
1338 q
->error_status_flags
=0;
1340 if (qdio_performance_stats
) {
1341 perf_stats
.inbound_time
+=NOW
-perf_stats
.start_time_inbound
;
1342 perf_stats
.inbound_cnt
++;
1347 __tiqdio_inbound_processing(struct qdio_q
*q
, int spare_ind_was_set
)
1349 struct qdio_irq
*irq_ptr
;
1353 QDIO_DBF_TEXT4(0,trace
,"iqinproc");
1354 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1357 * we first want to reserve the q, so that we know, that we don't
1358 * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1361 if (unlikely(qdio_reserve_q(q
))) {
1363 if (qdio_performance_stats
)
1366 * as we might just be about to stop polling, we make
1367 * sure that we check again at least once more
1372 if (qdio_performance_stats
)
1374 if (unlikely(atomic_read(&q
->is_in_shutdown
))) {
1380 * we reset spare_ind_was_set, when the queue does not use the
1383 if (spare_ind_was_set
)
1384 spare_ind_was_set
= (q
->dev_st_chg_ind
== &spare_indicator
);
1386 if (!(*(q
->dev_st_chg_ind
)) && !spare_ind_was_set
)
1389 * q->dev_st_chg_ind is the indicator, be it shared or not.
1390 * only clear it, if indicator is non-shared
1392 if (!spare_ind_was_set
)
1393 tiqdio_clear_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1395 if (q
->hydra_gives_outbound_pcis
) {
1396 if (!q
->siga_sync_done_on_thinints
) {
1398 } else if ((!q
->siga_sync_done_on_outb_tis
)&&
1399 (q
->hydra_gives_outbound_pcis
)) {
1400 SYNC_MEMORY_ALL_OUTB
;
1406 * maybe we have to do work on our outbound queues... at least
1407 * we have to check the outbound-int-capable thinint-capable
1410 if (q
->hydra_gives_outbound_pcis
) {
1411 irq_ptr
= (struct qdio_irq
*)q
->irq_ptr
;
1412 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1413 oq
= irq_ptr
->output_qs
[i
];
1414 if (!qdio_is_outbound_q_done(oq
)) {
1415 if (qdio_performance_stats
)
1416 perf_stats
.tl_runs
--;
1417 __qdio_outbound_processing(oq
);
1422 if (!qdio_has_inbound_q_moved(q
))
1425 qdio_kick_inbound_handler(q
);
1426 if (tiqdio_is_inbound_q_done(q
))
1427 if (!qdio_stop_polling(q
)) {
1429 * we set the flags to get into the stuff next time,
1430 * see also comment in qdio_stop_polling
1432 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1440 tiqdio_inbound_processing(struct qdio_q
*q
)
1442 __tiqdio_inbound_processing(q
, atomic_read(&spare_indicator_usecount
));
1446 __qdio_inbound_processing(struct qdio_q
*q
)
1450 QDIO_DBF_TEXT4(0,trace
,"qinproc");
1451 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1453 if (unlikely(qdio_reserve_q(q
))) {
1455 if (qdio_performance_stats
)
1457 /* as we're sissies, we'll check next time */
1458 if (likely(!atomic_read(&q
->is_in_shutdown
))) {
1460 QDIO_DBF_TEXT4(0,trace
,"busy,agn");
1464 if (qdio_performance_stats
) {
1466 perf_stats
.tl_runs
++;
1470 if (qdio_has_inbound_q_moved(q
)) {
1471 qdio_kick_inbound_handler(q
);
1472 if (!qdio_stop_polling(q
)) {
1474 if (q_laps
<QDIO_Q_LAPS
)
1479 if (!qdio_is_inbound_q_done(q
))
1480 /* means poll time is not yet over */
1488 qdio_inbound_processing(struct qdio_q
*q
)
1490 __qdio_inbound_processing(q
);
1493 /************************* MAIN ROUTINES *******************************/
1495 #ifdef QDIO_USE_PROCESSING_STATE
1497 tiqdio_reset_processing_state(struct qdio_q
*q
, int q_laps
)
1505 * under VM, we have not used the PROCESSING state, so no
1506 * need to stop polling
1511 if (unlikely(qdio_reserve_q(q
))) {
1513 if (qdio_performance_stats
)
1516 * as we might just be about to stop polling, we make
1517 * sure that we check again at least once more
1521 * sanity -- we'd get here without setting the
1524 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1528 if (qdio_stop_polling(q
)) {
1532 if (q_laps
<QDIO_Q_LAPS
-1) {
1537 * we set the flags to get into the stuff
1538 * next time, see also comment in qdio_stop_polling
1540 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1546 #endif /* QDIO_USE_PROCESSING_STATE */
1549 tiqdio_inbound_checks(void)
1552 int spare_ind_was_set
=0;
1553 #ifdef QDIO_USE_PROCESSING_STATE
1555 #endif /* QDIO_USE_PROCESSING_STATE */
1557 QDIO_DBF_TEXT4(0,trace
,"iqdinbck");
1558 QDIO_DBF_TEXT5(0,trace
,"iqlocsum");
1560 #ifdef QDIO_USE_PROCESSING_STATE
1562 #endif /* QDIO_USE_PROCESSING_STATE */
1564 /* when the spare indicator is used and set, save that and clear it */
1565 if ((atomic_read(&spare_indicator_usecount
)) && spare_indicator
) {
1566 spare_ind_was_set
= 1;
1567 tiqdio_clear_summary_bit((__u32
*)&spare_indicator
);
1570 q
=(struct qdio_q
*)tiq_list
;
1574 __tiqdio_inbound_processing(q
, spare_ind_was_set
);
1575 q
=(struct qdio_q
*)q
->list_next
;
1576 } while (q
!=(struct qdio_q
*)tiq_list
);
1578 #ifdef QDIO_USE_PROCESSING_STATE
1579 q
=(struct qdio_q
*)tiq_list
;
1583 ret
= tiqdio_reset_processing_state(q
, q_laps
);
1590 q
= (struct qdio_q
*)q
->list_next
;
1596 } while (q
!=(struct qdio_q
*)tiq_list
);
1597 #endif /* QDIO_USE_PROCESSING_STATE */
1601 tiqdio_tl(unsigned long data
)
1603 QDIO_DBF_TEXT4(0,trace
,"iqdio_tl");
1605 if (qdio_performance_stats
)
1606 perf_stats
.tl_runs
++;
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
);
1634 free_page((unsigned long) irq_ptr
);
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
= kzalloc(sizeof(struct qdio_q
), GFP_KERNEL
);
1686 QDIO_PRINT_ERR("kmalloc of q failed!\n");
1690 q
->slib
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1692 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1696 irq_ptr
->input_qs
[i
]=q
;
1699 for (i
=0;i
<no_output_qs
;i
++) {
1700 q
= kzalloc(sizeof(struct qdio_q
), GFP_KERNEL
);
1706 q
->slib
=kmalloc(PAGE_SIZE
,GFP_KERNEL
);
1708 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1712 irq_ptr
->output_qs
[i
]=q
;
1721 qdio_fill_qs(struct qdio_irq
*irq_ptr
, struct ccw_device
*cdev
,
1722 int no_input_qs
, int no_output_qs
,
1723 qdio_handler_t
*input_handler
,
1724 qdio_handler_t
*output_handler
,
1725 unsigned long int_parm
,int q_format
,
1726 unsigned long flags
,
1727 void **inbound_sbals_array
,
1728 void **outbound_sbals_array
)
1732 char dbf_text
[20]; /* see qdio_initialize */
1736 sprintf(dbf_text
,"qfqs%4x",cdev
->private->schid
.sch_no
);
1737 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1738 for (i
=0;i
<no_input_qs
;i
++) {
1739 q
=irq_ptr
->input_qs
[i
];
1741 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1742 sprintf(dbf_text
,"in-q%4x",i
);
1743 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1744 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1746 memset(q
->slib
,0,PAGE_SIZE
);
1747 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1751 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1752 q
->sbal
[j
]=*(inbound_sbals_array
++);
1754 q
->queue_type
=q_format
;
1755 q
->int_parm
=int_parm
;
1756 q
->schid
= irq_ptr
->schid
;
1757 q
->irq_ptr
= irq_ptr
;
1762 q
->first_to_check
=0;
1764 q
->handler
=input_handler
;
1765 q
->dev_st_chg_ind
=irq_ptr
->dev_st_chg_ind
;
1767 q
->tasklet
.data
=(unsigned long)q
;
1768 /* q->is_thinint_q isn't valid at this time, but
1769 * irq_ptr->is_thinint_irq is */
1770 q
->tasklet
.func
=(void(*)(unsigned long))
1771 ((irq_ptr
->is_thinint_irq
)?&tiqdio_inbound_processing
:
1772 &qdio_inbound_processing
);
1774 /* actually this is not used for inbound queues. yet. */
1775 atomic_set(&q
->busy_siga_counter
,0);
1776 q
->timing
.busy_start
=0;
1778 /* for (j=0;j<QDIO_STATS_NUMBER;j++)
1779 q->timing.last_transfer_times[j]=(qdio_get_micros()/
1780 QDIO_STATS_NUMBER)*j;
1781 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1785 if (i
>0) irq_ptr
->input_qs
[i
-1]->slib
->nsliba
=
1786 (unsigned long)(q
->slib
);
1787 q
->slib
->sla
=(unsigned long)(q
->sl
);
1788 q
->slib
->slsba
=(unsigned long)(&q
->slsb
.acc
.val
[0]);
1791 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1792 q
->sl
->element
[j
].sbal
=(unsigned long)(q
->sbal
[j
]);
1794 QDIO_DBF_TEXT2(0,setup
,"sl-sb-b0");
1796 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1797 ptr
=(void*)&q
->slsb
;
1798 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1799 ptr
=(void*)q
->sbal
[0];
1800 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1803 if (!irq_ptr
->is_qebsm
) {
1804 unsigned int count
= 1;
1805 for (j
= 0; j
< QDIO_MAX_BUFFERS_PER_Q
; j
++)
1806 set_slsb(q
, &j
, SLSB_P_INPUT_NOT_INIT
, &count
);
1810 for (i
=0;i
<no_output_qs
;i
++) {
1811 q
=irq_ptr
->output_qs
[i
];
1812 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1814 sprintf(dbf_text
,"outq%4x",i
);
1815 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1816 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1818 memset(q
->slib
,0,PAGE_SIZE
);
1819 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1823 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1824 q
->sbal
[j
]=*(outbound_sbals_array
++);
1826 q
->queue_type
=q_format
;
1827 if ((q
->queue_type
== QDIO_IQDIO_QFMT
) &&
1828 (no_output_qs
> 1) &&
1829 (i
== no_output_qs
-1))
1830 q
->queue_type
= QDIO_IQDIO_QFMT_ASYNCH
;
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 if (qdio_performance_stats
) {
1918 perf_stats
.thinints
++;
1919 perf_stats
.start_time_inbound
=NOW
;
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 QDIO_HEXDUMP16(WARN
,"irb: ",irb
);
1964 QDIO_HEXDUMP16(WARN
,"sense data: ",irb
->ecw
);
1970 qdio_handle_pci(struct qdio_irq
*irq_ptr
)
1975 if (qdio_performance_stats
) {
1977 perf_stats
.start_time_inbound
=NOW
;
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 if (qdio_performance_stats
)
1985 perf_stats
.tl_runs
--;
1986 __qdio_inbound_processing(q
);
1989 if (!irq_ptr
->hydra_gives_outbound_pcis
)
1991 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1992 q
=irq_ptr
->output_qs
[i
];
1993 if (qdio_is_outbound_q_done(q
))
1995 if (qdio_performance_stats
)
1996 perf_stats
.tl_runs
--;
1997 if (!irq_ptr
->sync_done_on_outb_pcis
)
1999 __qdio_outbound_processing(q
);
2003 static void qdio_establish_handle_irq(struct ccw_device
*, int, int);
2006 qdio_handle_activate_check(struct ccw_device
*cdev
, unsigned long intparm
,
2007 int cstat
, int dstat
)
2009 struct qdio_irq
*irq_ptr
;
2013 irq_ptr
= cdev
->private->qdio_data
;
2015 QDIO_DBF_TEXT2(1, trace
, "ick2");
2016 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2017 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2018 QDIO_DBF_HEX2(0,trace
,&intparm
,sizeof(int));
2019 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2020 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2021 QDIO_PRINT_ERR("received check condition on activate " \
2022 "queues on device %s (cs=x%x, ds=x%x).\n",
2023 cdev
->dev
.bus_id
, cstat
, dstat
);
2024 if (irq_ptr
->no_input_qs
) {
2025 q
=irq_ptr
->input_qs
[0];
2026 } else if (irq_ptr
->no_output_qs
) {
2027 q
=irq_ptr
->output_qs
[0];
2029 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2031 goto omit_handler_call
;
2033 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
2034 QDIO_STATUS_LOOK_FOR_ERROR
,
2035 0,0,0,-1,-1,q
->int_parm
);
2037 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_STOPPED
);
2042 qdio_call_shutdown(struct work_struct
*work
)
2044 struct ccw_device_private
*priv
;
2045 struct ccw_device
*cdev
;
2047 priv
= container_of(work
, struct ccw_device_private
, kick_work
);
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 0.%x.%04x: timed out\n",
2070 irq_ptr
->schid
.ssid
, 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, "
2077 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2078 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2080 case QDIO_IRQ_STATE_ESTABLISHED
:
2081 case QDIO_IRQ_STATE_ACTIVE
:
2082 /* I/O has been terminated by common I/O layer. */
2083 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2084 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2085 QDIO_DBF_TEXT2(1, trace
, "cio:term");
2086 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_STOPPED
);
2087 if (get_device(&cdev
->dev
)) {
2088 /* Can't call shutdown from interrupt context. */
2089 PREPARE_WORK(&cdev
->private->kick_work
,
2090 qdio_call_shutdown
);
2091 queue_work(ccw_device_work
, &cdev
->private->kick_work
);
2097 ccw_device_set_timeout(cdev
, 0);
2098 wake_up(&cdev
->private->wait_q
);
2102 qdio_handler(struct ccw_device
*cdev
, unsigned long intparm
, struct irb
*irb
)
2104 struct qdio_irq
*irq_ptr
;
2108 #ifdef CONFIG_QDIO_DEBUG
2109 QDIO_DBF_TEXT4(0, trace
, "qint");
2110 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2111 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2112 #endif /* CONFIG_QDIO_DEBUG */
2115 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2116 "handler, device %s\n", cdev
->dev
.bus_id
);
2120 irq_ptr
= cdev
->private->qdio_data
;
2122 QDIO_DBF_TEXT2(1, trace
, "uint");
2123 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2124 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2125 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2131 /* Currently running i/o is in error. */
2132 switch (PTR_ERR(irb
)) {
2134 QDIO_PRINT_ERR("i/o error on device %s\n",
2138 qdio_timeout_handler(cdev
);
2141 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2142 PTR_ERR(irb
), cdev
->dev
.bus_id
);
2147 qdio_irq_check_sense(irq_ptr
->schid
, irb
);
2149 #ifdef CONFIG_QDIO_DEBUG
2150 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2151 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2152 #endif /* CONFIG_QDIO_DEBUG */
2154 cstat
= irb
->scsw
.cstat
;
2155 dstat
= irb
->scsw
.dstat
;
2157 switch (irq_ptr
->state
) {
2158 case QDIO_IRQ_STATE_INACTIVE
:
2159 qdio_establish_handle_irq(cdev
, cstat
, dstat
);
2162 case QDIO_IRQ_STATE_CLEANUP
:
2163 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2166 case QDIO_IRQ_STATE_ESTABLISHED
:
2167 case QDIO_IRQ_STATE_ACTIVE
:
2168 if (cstat
& SCHN_STAT_PCI
) {
2169 qdio_handle_pci(irq_ptr
);
2173 if ((cstat
&~SCHN_STAT_PCI
)||dstat
) {
2174 qdio_handle_activate_check(cdev
, intparm
, cstat
, dstat
);
2178 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2180 irq_ptr
->state
, cdev
->dev
.bus_id
);
2182 wake_up(&cdev
->private->wait_q
);
2187 qdio_synchronize(struct ccw_device
*cdev
, unsigned int flags
,
2188 unsigned int queue_number
)
2192 struct qdio_irq
*irq_ptr
;
2194 #ifdef CONFIG_QDIO_DEBUG
2195 char dbf_text
[15]="SyncXXXX";
2198 irq_ptr
= cdev
->private->qdio_data
;
2202 #ifdef CONFIG_QDIO_DEBUG
2203 *((int*)(&dbf_text
[4])) = irq_ptr
->schid
.sch_no
;
2204 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2205 *((int*)(&dbf_text
[0]))=flags
;
2206 *((int*)(&dbf_text
[4]))=queue_number
;
2207 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2208 #endif /* CONFIG_QDIO_DEBUG */
2210 if (flags
&QDIO_FLAG_SYNC_INPUT
) {
2211 q
=irq_ptr
->input_qs
[queue_number
];
2214 if (!(irq_ptr
->is_qebsm
))
2215 cc
= do_siga_sync(q
->schid
, 0, q
->mask
);
2216 } else if (flags
&QDIO_FLAG_SYNC_OUTPUT
) {
2217 q
=irq_ptr
->output_qs
[queue_number
];
2220 if (!(irq_ptr
->is_qebsm
))
2221 cc
= do_siga_sync(q
->schid
, q
->mask
, 0);
2227 QDIO_DBF_HEX3(0,trace
,&ptr
,sizeof(int));
2233 qdio_check_subchannel_qebsm(struct qdio_irq
*irq_ptr
, unsigned char qdioac
,
2234 unsigned long token
)
2238 unsigned int count
, start_buf
;
2241 /*check if QEBSM is disabled */
2242 if (!(irq_ptr
->is_qebsm
) || !(qdioac
& 0x01)) {
2243 irq_ptr
->is_qebsm
= 0;
2244 irq_ptr
->sch_token
= 0;
2245 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2246 QDIO_DBF_TEXT0(0,setup
,"noV=V");
2249 irq_ptr
->sch_token
= token
;
2251 for (i
= 0; i
< irq_ptr
->no_input_qs
;i
++) {
2252 q
= irq_ptr
->input_qs
[i
];
2253 count
= QDIO_MAX_BUFFERS_PER_Q
;
2255 set_slsb(q
, &start_buf
, SLSB_P_INPUT_NOT_INIT
, &count
);
2257 sprintf(dbf_text
,"V=V:%2x",irq_ptr
->is_qebsm
);
2258 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2259 sprintf(dbf_text
,"%8lx",irq_ptr
->sch_token
);
2260 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2262 for (i
= 0; i
< irq_ptr
->no_output_qs
; i
++) {
2263 q
= irq_ptr
->output_qs
[i
];
2264 count
= QDIO_MAX_BUFFERS_PER_Q
;
2266 set_slsb(q
, &start_buf
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
2271 qdio_get_ssqd_information(struct qdio_irq
*irq_ptr
)
2274 unsigned char qdioac
;
2276 struct chsc_header request
;
2284 struct chsc_header response
;
2303 QDIO_DBF_TEXT0(0,setup
,"getssqd");
2305 ssqd_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2307 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2308 "SIGAs for sch x%x.\n", irq_ptr
->schid
.sch_no
);
2309 irq_ptr
->qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
||
2310 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
||
2311 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2312 irq_ptr
->is_qebsm
= 0;
2313 irq_ptr
->sch_token
= 0;
2314 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2318 ssqd_area
->request
= (struct chsc_header
) {
2322 ssqd_area
->first_sch
= irq_ptr
->schid
.sch_no
;
2323 ssqd_area
->last_sch
= irq_ptr
->schid
.sch_no
;
2324 ssqd_area
->ssid
= irq_ptr
->schid
.ssid
;
2325 result
= chsc(ssqd_area
);
2328 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
2329 "SIGAs for sch 0.%x.%x.\n", result
,
2330 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2331 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
||
2332 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
||
2333 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2334 irq_ptr
->is_qebsm
= 0;
2338 if (ssqd_area
->response
.code
!= QDIO_CHSC_RESPONSE_CODE_OK
) {
2339 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2340 "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n",
2341 ssqd_area
->response
.code
,
2342 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2343 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
||
2344 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
||
2345 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2346 irq_ptr
->is_qebsm
= 0;
2349 if (!(ssqd_area
->flags
& CHSC_FLAG_QDIO_CAPABILITY
) ||
2350 !(ssqd_area
->flags
& CHSC_FLAG_VALIDITY
) ||
2351 (ssqd_area
->sch
!= irq_ptr
->schid
.sch_no
)) {
2352 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2353 "using all SIGAs.\n",
2354 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2355 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2356 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2357 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* worst case */
2358 irq_ptr
->is_qebsm
= 0;
2361 qdioac
= ssqd_area
->qdioac1
;
2363 qdio_check_subchannel_qebsm(irq_ptr
, qdioac
,
2364 ssqd_area
->sch_token
);
2365 mempool_free(ssqd_area
, qdio_mempool_scssc
);
2366 irq_ptr
->qdioac
= qdioac
;
2370 tiqdio_check_chsc_availability(void)
2374 if (!css_characteristics_avail
)
2377 /* Check for bit 41. */
2378 if (!css_general_characteristics
.aif
) {
2379 QDIO_PRINT_WARN("Adapter interruption facility not " \
2384 /* Check for bits 107 and 108. */
2385 if (!css_chsc_characteristics
.scssc
||
2386 !css_chsc_characteristics
.scsscf
) {
2387 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2388 "not available.\n");
2392 /* Check for OSA/FCP thin interrupts (bit 67). */
2393 hydra_thinints
= css_general_characteristics
.aif_osa
;
2394 sprintf(dbf_text
,"hydrati%1x", hydra_thinints
);
2395 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2398 /* Check for QEBSM support in general (bit 58). */
2399 is_passthrough
= css_general_characteristics
.qebsm
;
2401 sprintf(dbf_text
,"cssQBS:%1x", is_passthrough
);
2402 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2404 /* Check for aif time delay disablement fac (bit 56). If installed,
2405 * omit svs even under lpar (good point by rick again) */
2406 omit_svs
= css_general_characteristics
.aif_tdd
;
2407 sprintf(dbf_text
,"omitsvs%1x", omit_svs
);
2408 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2414 tiqdio_set_subchannel_ind(struct qdio_irq
*irq_ptr
, int reset_to_zero
)
2416 unsigned long real_addr_local_summary_bit
;
2417 unsigned long real_addr_dev_st_chg_ind
;
2421 unsigned int resp_code
;
2425 struct chsc_header request
;
2430 u64 summary_indicator_addr
;
2431 u64 subchannel_indicator_addr
;
2436 u32 word_with_d_bit
;
2437 /* set to 0x10000000 to enable
2438 * time delay disablement facility */
2440 struct subchannel_id schid
;
2441 u32 reserved6
[1004];
2442 struct chsc_header response
;
2446 if (!irq_ptr
->is_thinint_irq
)
2449 if (reset_to_zero
) {
2450 real_addr_local_summary_bit
=0;
2451 real_addr_dev_st_chg_ind
=0;
2453 real_addr_local_summary_bit
=
2454 virt_to_phys((volatile void *)indicators
);
2455 real_addr_dev_st_chg_ind
=
2456 virt_to_phys((volatile void *)irq_ptr
->dev_st_chg_ind
);
2459 scssc_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2461 QDIO_PRINT_WARN("No memory for setting indicators on " \
2462 "subchannel 0.%x.%x.\n",
2463 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2466 scssc_area
->request
= (struct chsc_header
) {
2470 scssc_area
->operation_code
= 0;
2472 scssc_area
->summary_indicator_addr
= real_addr_local_summary_bit
;
2473 scssc_area
->subchannel_indicator_addr
= real_addr_dev_st_chg_ind
;
2474 scssc_area
->ks
= QDIO_STORAGE_KEY
;
2475 scssc_area
->kc
= QDIO_STORAGE_KEY
;
2476 scssc_area
->isc
= TIQDIO_THININT_ISC
;
2477 scssc_area
->schid
= irq_ptr
->schid
;
2478 /* enables the time delay disablement facility. Don't care
2479 * whether it is really there (i.e. we haven't checked for
2481 if (css_general_characteristics
.aif_tdd
)
2482 scssc_area
->word_with_d_bit
= 0x10000000;
2484 QDIO_PRINT_WARN("Time delay disablement facility " \
2487 result
= chsc(scssc_area
);
2489 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2491 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,result
);
2496 resp_code
= scssc_area
->response
.code
;
2497 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2498 QDIO_PRINT_WARN("response upon setting indicators " \
2499 "is 0x%x.\n",resp_code
);
2500 sprintf(dbf_text
,"sidR%4x",resp_code
);
2501 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2502 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2503 ptr
=&scssc_area
->response
;
2504 QDIO_DBF_HEX2(1,setup
,&ptr
,QDIO_DBF_SETUP_LEN
);
2509 QDIO_DBF_TEXT2(0,setup
,"setscind");
2510 QDIO_DBF_HEX2(0,setup
,&real_addr_local_summary_bit
,
2511 sizeof(unsigned long));
2512 QDIO_DBF_HEX2(0,setup
,&real_addr_dev_st_chg_ind
,sizeof(unsigned long));
2515 mempool_free(scssc_area
, qdio_mempool_scssc
);
2521 tiqdio_set_delay_target(struct qdio_irq
*irq_ptr
, unsigned long delay_target
)
2523 unsigned int resp_code
;
2529 struct chsc_header request
;
2536 u32 reserved5
[1009];
2537 struct chsc_header response
;
2541 if (!irq_ptr
->is_thinint_irq
)
2544 scsscf_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2546 QDIO_PRINT_WARN("No memory for setting delay target on " \
2547 "subchannel 0.%x.%x.\n",
2548 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2551 scsscf_area
->request
= (struct chsc_header
) {
2556 scsscf_area
->delay_target
= delay_target
<<16;
2558 result
=chsc(scsscf_area
);
2560 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2561 "cc=%i. Continuing.\n",
2562 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2568 resp_code
= scsscf_area
->response
.code
;
2569 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2570 QDIO_PRINT_WARN("response upon setting delay target " \
2571 "is 0x%x. Continuing.\n",resp_code
);
2572 sprintf(dbf_text
,"sdtR%4x",resp_code
);
2573 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2574 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2575 ptr
=&scsscf_area
->response
;
2576 QDIO_DBF_HEX2(1,trace
,&ptr
,QDIO_DBF_TRACE_LEN
);
2578 QDIO_DBF_TEXT2(0,trace
,"delytrgt");
2579 QDIO_DBF_HEX2(0,trace
,&delay_target
,sizeof(unsigned long));
2580 result
= 0; /* not critical */
2582 mempool_free(scsscf_area
, qdio_mempool_scssc
);
2587 qdio_cleanup(struct ccw_device
*cdev
, int how
)
2589 struct qdio_irq
*irq_ptr
;
2593 irq_ptr
= cdev
->private->qdio_data
;
2597 sprintf(dbf_text
,"qcln%4x",irq_ptr
->schid
.sch_no
);
2598 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2599 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2601 rc
= qdio_shutdown(cdev
, how
);
2602 if ((rc
== 0) || (rc
== -EINPROGRESS
))
2603 rc
= qdio_free(cdev
);
2608 qdio_shutdown(struct ccw_device
*cdev
, int how
)
2610 struct qdio_irq
*irq_ptr
;
2614 unsigned long flags
;
2618 irq_ptr
= cdev
->private->qdio_data
;
2622 down(&irq_ptr
->setting_up_sema
);
2624 sprintf(dbf_text
,"qsqs%4x",irq_ptr
->schid
.sch_no
);
2625 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2626 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2628 /* mark all qs as uninteresting */
2629 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
2630 atomic_set(&irq_ptr
->input_qs
[i
]->is_in_shutdown
,1);
2632 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
2633 atomic_set(&irq_ptr
->output_qs
[i
]->is_in_shutdown
,1);
2635 tasklet_kill(&tiqdio_tasklet
);
2637 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2638 qdio_unmark_q(irq_ptr
->input_qs
[i
]);
2639 tasklet_kill(&irq_ptr
->input_qs
[i
]->tasklet
);
2640 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2641 !atomic_read(&irq_ptr
->
2644 QDIO_NO_USE_COUNT_TIMEOUT
);
2645 if (atomic_read(&irq_ptr
->input_qs
[i
]->use_count
))
2646 result
=-EINPROGRESS
;
2649 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2650 tasklet_kill(&irq_ptr
->output_qs
[i
]->tasklet
);
2651 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2652 !atomic_read(&irq_ptr
->
2655 QDIO_NO_USE_COUNT_TIMEOUT
);
2656 if (atomic_read(&irq_ptr
->output_qs
[i
]->use_count
))
2657 result
=-EINPROGRESS
;
2660 /* cleanup subchannel */
2661 spin_lock_irqsave(get_ccwdev_lock(cdev
),flags
);
2662 if (how
&QDIO_FLAG_CLEANUP_USING_CLEAR
) {
2663 rc
= ccw_device_clear(cdev
, QDIO_DOING_CLEANUP
);
2664 timeout
=QDIO_CLEANUP_CLEAR_TIMEOUT
;
2665 } else if (how
&QDIO_FLAG_CLEANUP_USING_HALT
) {
2666 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2667 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2668 } else { /* default behaviour */
2669 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2670 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2672 if (rc
== -ENODEV
) {
2673 /* No need to wait for device no longer present. */
2674 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2675 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2676 } else if (((void *)cdev
->handler
!= (void *)qdio_handler
) && rc
== 0) {
2678 * Whoever put another handler there, has to cope with the
2679 * interrupt theirself. Might happen if qdio_shutdown was
2680 * called on already shutdown queues, but this shouldn't have
2683 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2684 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2685 } else if (rc
== 0) {
2686 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_CLEANUP
);
2687 ccw_device_set_timeout(cdev
, timeout
);
2688 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),flags
);
2690 wait_event(cdev
->private->wait_q
,
2691 irq_ptr
->state
== QDIO_IRQ_STATE_INACTIVE
||
2692 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
2694 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2695 "device %s\n", result
, cdev
->dev
.bus_id
);
2696 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2700 if (irq_ptr
->is_thinint_irq
) {
2701 qdio_put_indicator((__u32
*)irq_ptr
->dev_st_chg_ind
);
2702 tiqdio_set_subchannel_ind(irq_ptr
,1);
2703 /* reset adapter interrupt indicators */
2706 /* exchange int handlers, if necessary */
2707 if ((void*)cdev
->handler
== (void*)qdio_handler
)
2708 cdev
->handler
=irq_ptr
->original_int_handler
;
2710 /* Ignore errors. */
2711 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2712 ccw_device_set_timeout(cdev
, 0);
2714 up(&irq_ptr
->setting_up_sema
);
2719 qdio_free(struct ccw_device
*cdev
)
2721 struct qdio_irq
*irq_ptr
;
2724 irq_ptr
= cdev
->private->qdio_data
;
2728 down(&irq_ptr
->setting_up_sema
);
2730 sprintf(dbf_text
,"qfqs%4x",irq_ptr
->schid
.sch_no
);
2731 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2732 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2734 cdev
->private->qdio_data
= NULL
;
2736 up(&irq_ptr
->setting_up_sema
);
2738 qdio_release_irq_memory(irq_ptr
);
2739 module_put(THIS_MODULE
);
2744 qdio_allocate_do_dbf(struct qdio_initialize
*init_data
)
2746 char dbf_text
[20]; /* if a printf printed out more than 8 chars */
2748 sprintf(dbf_text
,"qfmt:%x",init_data
->q_format
);
2749 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2750 QDIO_DBF_HEX0(0,setup
,init_data
->adapter_name
,8);
2751 sprintf(dbf_text
,"qpff%4x",init_data
->qib_param_field_format
);
2752 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2753 QDIO_DBF_HEX0(0,setup
,&init_data
->qib_param_field
,sizeof(char*));
2754 QDIO_DBF_HEX0(0,setup
,&init_data
->input_slib_elements
,sizeof(long*));
2755 QDIO_DBF_HEX0(0,setup
,&init_data
->output_slib_elements
,sizeof(long*));
2756 sprintf(dbf_text
,"miit%4x",init_data
->min_input_threshold
);
2757 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2758 sprintf(dbf_text
,"mait%4x",init_data
->max_input_threshold
);
2759 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2760 sprintf(dbf_text
,"miot%4x",init_data
->min_output_threshold
);
2761 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2762 sprintf(dbf_text
,"maot%4x",init_data
->max_output_threshold
);
2763 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2764 sprintf(dbf_text
,"niq:%4x",init_data
->no_input_qs
);
2765 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2766 sprintf(dbf_text
,"noq:%4x",init_data
->no_output_qs
);
2767 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2768 QDIO_DBF_HEX0(0,setup
,&init_data
->input_handler
,sizeof(void*));
2769 QDIO_DBF_HEX0(0,setup
,&init_data
->output_handler
,sizeof(void*));
2770 QDIO_DBF_HEX0(0,setup
,&init_data
->int_parm
,sizeof(long));
2771 QDIO_DBF_HEX0(0,setup
,&init_data
->flags
,sizeof(long));
2772 QDIO_DBF_HEX0(0,setup
,&init_data
->input_sbal_addr_array
,sizeof(void*));
2773 QDIO_DBF_HEX0(0,setup
,&init_data
->output_sbal_addr_array
,sizeof(void*));
2777 qdio_allocate_fill_input_desc(struct qdio_irq
*irq_ptr
, int i
, int iqfmt
)
2779 irq_ptr
->input_qs
[i
]->is_iqdio_q
= iqfmt
;
2780 irq_ptr
->input_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2782 irq_ptr
->qdr
->qdf0
[i
].sliba
=(unsigned long)(irq_ptr
->input_qs
[i
]->slib
);
2784 irq_ptr
->qdr
->qdf0
[i
].sla
=(unsigned long)(irq_ptr
->input_qs
[i
]->sl
);
2786 irq_ptr
->qdr
->qdf0
[i
].slsba
=
2787 (unsigned long)(&irq_ptr
->input_qs
[i
]->slsb
.acc
.val
[0]);
2789 irq_ptr
->qdr
->qdf0
[i
].akey
=QDIO_STORAGE_KEY
;
2790 irq_ptr
->qdr
->qdf0
[i
].bkey
=QDIO_STORAGE_KEY
;
2791 irq_ptr
->qdr
->qdf0
[i
].ckey
=QDIO_STORAGE_KEY
;
2792 irq_ptr
->qdr
->qdf0
[i
].dkey
=QDIO_STORAGE_KEY
;
2796 qdio_allocate_fill_output_desc(struct qdio_irq
*irq_ptr
, int i
,
2799 irq_ptr
->output_qs
[i
]->is_iqdio_q
= iqfmt
;
2800 irq_ptr
->output_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2802 irq_ptr
->qdr
->qdf0
[i
+j
].sliba
=(unsigned long)(irq_ptr
->output_qs
[i
]->slib
);
2804 irq_ptr
->qdr
->qdf0
[i
+j
].sla
=(unsigned long)(irq_ptr
->output_qs
[i
]->sl
);
2806 irq_ptr
->qdr
->qdf0
[i
+j
].slsba
=
2807 (unsigned long)(&irq_ptr
->output_qs
[i
]->slsb
.acc
.val
[0]);
2809 irq_ptr
->qdr
->qdf0
[i
+j
].akey
=QDIO_STORAGE_KEY
;
2810 irq_ptr
->qdr
->qdf0
[i
+j
].bkey
=QDIO_STORAGE_KEY
;
2811 irq_ptr
->qdr
->qdf0
[i
+j
].ckey
=QDIO_STORAGE_KEY
;
2812 irq_ptr
->qdr
->qdf0
[i
+j
].dkey
=QDIO_STORAGE_KEY
;
2817 qdio_initialize_set_siga_flags_input(struct qdio_irq
*irq_ptr
)
2821 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2822 irq_ptr
->input_qs
[i
]->siga_sync
=
2823 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2824 irq_ptr
->input_qs
[i
]->siga_in
=
2825 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2826 irq_ptr
->input_qs
[i
]->siga_out
=
2827 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2828 irq_ptr
->input_qs
[i
]->siga_sync_done_on_thinints
=
2829 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2830 irq_ptr
->input_qs
[i
]->hydra_gives_outbound_pcis
=
2831 irq_ptr
->hydra_gives_outbound_pcis
;
2832 irq_ptr
->input_qs
[i
]->siga_sync_done_on_outb_tis
=
2834 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2835 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2836 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2837 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2843 qdio_initialize_set_siga_flags_output(struct qdio_irq
*irq_ptr
)
2847 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2848 irq_ptr
->output_qs
[i
]->siga_sync
=
2849 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2850 irq_ptr
->output_qs
[i
]->siga_in
=
2851 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2852 irq_ptr
->output_qs
[i
]->siga_out
=
2853 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2854 irq_ptr
->output_qs
[i
]->siga_sync_done_on_thinints
=
2855 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2856 irq_ptr
->output_qs
[i
]->hydra_gives_outbound_pcis
=
2857 irq_ptr
->hydra_gives_outbound_pcis
;
2858 irq_ptr
->output_qs
[i
]->siga_sync_done_on_outb_tis
=
2860 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2861 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2862 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2863 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2869 qdio_establish_irq_check_for_errors(struct ccw_device
*cdev
, int cstat
,
2873 struct qdio_irq
*irq_ptr
;
2875 irq_ptr
= cdev
->private->qdio_data
;
2877 if (cstat
|| (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
))) {
2878 sprintf(dbf_text
,"ick1%4x",irq_ptr
->schid
.sch_no
);
2879 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2880 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2881 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2882 QDIO_PRINT_ERR("received check condition on establish " \
2883 "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2884 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2886 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ERR
);
2889 if (!(dstat
& DEV_STAT_DEV_END
)) {
2890 QDIO_DBF_TEXT2(1,setup
,"eq:no de");
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 0.%x.%04x: didn't get "
2894 "device end: dstat=%02x, cstat=%02x\n",
2895 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2897 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2901 if (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
)) {
2902 QDIO_DBF_TEXT2(1,setup
,"eq:badio");
2903 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2904 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2905 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
2906 "the following devstat: dstat=%02x, "
2907 "cstat=%02x\n", irq_ptr
->schid
.ssid
,
2908 irq_ptr
->schid
.sch_no
, dstat
, cstat
);
2909 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2916 qdio_establish_handle_irq(struct ccw_device
*cdev
, int cstat
, int dstat
)
2918 struct qdio_irq
*irq_ptr
;
2921 irq_ptr
= cdev
->private->qdio_data
;
2923 sprintf(dbf_text
,"qehi%4x",cdev
->private->schid
.sch_no
);
2924 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2925 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2927 if (qdio_establish_irq_check_for_errors(cdev
, cstat
, dstat
)) {
2928 ccw_device_set_timeout(cdev
, 0);
2932 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ESTABLISHED
);
2933 ccw_device_set_timeout(cdev
, 0);
2937 qdio_initialize(struct qdio_initialize
*init_data
)
2942 sprintf(dbf_text
,"qini%4x",init_data
->cdev
->private->schid
.sch_no
);
2943 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2944 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2946 rc
= qdio_allocate(init_data
);
2948 rc
= qdio_establish(init_data
);
2950 qdio_free(init_data
->cdev
);
2958 qdio_allocate(struct qdio_initialize
*init_data
)
2960 struct qdio_irq
*irq_ptr
;
2963 sprintf(dbf_text
,"qalc%4x",init_data
->cdev
->private->schid
.sch_no
);
2964 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2965 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2966 if ( (init_data
->no_input_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2967 (init_data
->no_output_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2968 ((init_data
->no_input_qs
) && (!init_data
->input_handler
)) ||
2969 ((init_data
->no_output_qs
) && (!init_data
->output_handler
)) )
2972 if (!init_data
->input_sbal_addr_array
)
2975 if (!init_data
->output_sbal_addr_array
)
2978 qdio_allocate_do_dbf(init_data
);
2981 irq_ptr
= (void *) get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
2983 QDIO_DBF_TEXT0(0,setup
,"irq_ptr:");
2984 QDIO_DBF_HEX0(0,setup
,&irq_ptr
,sizeof(void*));
2987 QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n");
2991 init_MUTEX(&irq_ptr
->setting_up_sema
);
2993 /* QDR must be in DMA area since CCW data address is only 32 bit */
2994 irq_ptr
->qdr
=kmalloc(sizeof(struct qdr
), GFP_KERNEL
| GFP_DMA
);
2995 if (!(irq_ptr
->qdr
)) {
2996 free_page((unsigned long) irq_ptr
);
2997 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
3000 QDIO_DBF_TEXT0(0,setup
,"qdr:");
3001 QDIO_DBF_HEX0(0,setup
,&irq_ptr
->qdr
,sizeof(void*));
3003 if (qdio_alloc_qs(irq_ptr
,
3004 init_data
->no_input_qs
,
3005 init_data
->no_output_qs
)) {
3006 qdio_release_irq_memory(irq_ptr
);
3010 init_data
->cdev
->private->qdio_data
= irq_ptr
;
3012 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_INACTIVE
);
3017 int qdio_fill_irq(struct qdio_initialize
*init_data
)
3023 struct qdio_irq
*irq_ptr
;
3025 irq_ptr
= init_data
->cdev
->private->qdio_data
;
3027 memset(irq_ptr
,0,((char*)&irq_ptr
->qdr
)-((char*)irq_ptr
));
3029 /* wipes qib.ac, required by ar7063 */
3030 memset(irq_ptr
->qdr
,0,sizeof(struct qdr
));
3032 irq_ptr
->int_parm
=init_data
->int_parm
;
3034 irq_ptr
->schid
= ccw_device_get_subchannel_id(init_data
->cdev
);
3035 irq_ptr
->no_input_qs
=init_data
->no_input_qs
;
3036 irq_ptr
->no_output_qs
=init_data
->no_output_qs
;
3038 if (init_data
->q_format
==QDIO_IQDIO_QFMT
) {
3039 irq_ptr
->is_iqdio_irq
=1;
3040 irq_ptr
->is_thinint_irq
=1;
3042 irq_ptr
->is_iqdio_irq
=0;
3043 irq_ptr
->is_thinint_irq
=hydra_thinints
;
3045 sprintf(dbf_text
,"is_i_t%1x%1x",
3046 irq_ptr
->is_iqdio_irq
,irq_ptr
->is_thinint_irq
);
3047 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3049 if (irq_ptr
->is_thinint_irq
) {
3050 irq_ptr
->dev_st_chg_ind
= qdio_get_indicator();
3051 QDIO_DBF_HEX1(0,setup
,&irq_ptr
->dev_st_chg_ind
,sizeof(void*));
3052 if (!irq_ptr
->dev_st_chg_ind
) {
3053 QDIO_PRINT_WARN("no indicator location available " \
3054 "for irq 0.%x.%x\n",
3055 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
3056 qdio_release_irq_memory(irq_ptr
);
3062 irq_ptr
->equeue
.cmd
=DEFAULT_ESTABLISH_QS_CMD
;
3063 irq_ptr
->equeue
.count
=DEFAULT_ESTABLISH_QS_COUNT
;
3064 irq_ptr
->aqueue
.cmd
=DEFAULT_ACTIVATE_QS_CMD
;
3065 irq_ptr
->aqueue
.count
=DEFAULT_ACTIVATE_QS_COUNT
;
3067 qdio_fill_qs(irq_ptr
, init_data
->cdev
,
3068 init_data
->no_input_qs
,
3069 init_data
->no_output_qs
,
3070 init_data
->input_handler
,
3071 init_data
->output_handler
,init_data
->int_parm
,
3072 init_data
->q_format
,init_data
->flags
,
3073 init_data
->input_sbal_addr_array
,
3074 init_data
->output_sbal_addr_array
);
3076 if (!try_module_get(THIS_MODULE
)) {
3077 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3078 qdio_release_irq_memory(irq_ptr
);
3082 qdio_fill_thresholds(irq_ptr
,init_data
->no_input_qs
,
3083 init_data
->no_output_qs
,
3084 init_data
->min_input_threshold
,
3085 init_data
->max_input_threshold
,
3086 init_data
->min_output_threshold
,
3087 init_data
->max_output_threshold
);
3090 irq_ptr
->qdr
->qfmt
=init_data
->q_format
;
3091 irq_ptr
->qdr
->iqdcnt
=init_data
->no_input_qs
;
3092 irq_ptr
->qdr
->oqdcnt
=init_data
->no_output_qs
;
3093 irq_ptr
->qdr
->iqdsz
=sizeof(struct qdesfmt0
)/4; /* size in words */
3094 irq_ptr
->qdr
->oqdsz
=sizeof(struct qdesfmt0
)/4;
3096 irq_ptr
->qdr
->qiba
=(unsigned long)&irq_ptr
->qib
;
3097 irq_ptr
->qdr
->qkey
=QDIO_STORAGE_KEY
;
3100 irq_ptr
->is_qebsm
= is_passthrough
;
3101 if (irq_ptr
->is_qebsm
)
3102 irq_ptr
->qib
.rflags
|= QIB_RFLAGS_ENABLE_QEBSM
;
3104 irq_ptr
->qib
.qfmt
=init_data
->q_format
;
3105 if (init_data
->no_input_qs
)
3106 irq_ptr
->qib
.isliba
=(unsigned long)(irq_ptr
->input_qs
[0]->slib
);
3107 if (init_data
->no_output_qs
)
3108 irq_ptr
->qib
.osliba
=(unsigned long)(irq_ptr
->output_qs
[0]->slib
);
3109 memcpy(irq_ptr
->qib
.ebcnam
,init_data
->adapter_name
,8);
3111 qdio_set_impl_params(irq_ptr
,init_data
->qib_param_field_format
,
3112 init_data
->qib_param_field
,
3113 init_data
->no_input_qs
,
3114 init_data
->no_output_qs
,
3115 init_data
->input_slib_elements
,
3116 init_data
->output_slib_elements
);
3118 /* first input descriptors, then output descriptors */
3119 is_iqdio
= (init_data
->q_format
== QDIO_IQDIO_QFMT
) ? 1 : 0;
3120 for (i
=0;i
<init_data
->no_input_qs
;i
++)
3121 qdio_allocate_fill_input_desc(irq_ptr
, i
, is_iqdio
);
3123 for (i
=0;i
<init_data
->no_output_qs
;i
++)
3124 qdio_allocate_fill_output_desc(irq_ptr
, i
,
3125 init_data
->no_input_qs
,
3128 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3130 /* get qdio commands */
3131 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_EQUEUE
);
3133 QDIO_DBF_TEXT2(1,setup
,"no eq");
3134 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3135 "Trying to use default.\n");
3137 irq_ptr
->equeue
= *ciw
;
3138 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_AQUEUE
);
3140 QDIO_DBF_TEXT2(1,setup
,"no aq");
3141 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3142 "Trying to use default.\n");
3144 irq_ptr
->aqueue
= *ciw
;
3146 /* Set new interrupt handler. */
3147 irq_ptr
->original_int_handler
= init_data
->cdev
->handler
;
3148 init_data
->cdev
->handler
= qdio_handler
;
3154 qdio_establish(struct qdio_initialize
*init_data
)
3156 struct qdio_irq
*irq_ptr
;
3157 unsigned long saveflags
;
3158 int result
, result2
;
3159 struct ccw_device
*cdev
;
3162 cdev
=init_data
->cdev
;
3163 irq_ptr
= cdev
->private->qdio_data
;
3167 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3170 down(&irq_ptr
->setting_up_sema
);
3172 qdio_fill_irq(init_data
);
3174 /* the thinint CHSC stuff */
3175 if (irq_ptr
->is_thinint_irq
) {
3177 result
= tiqdio_set_subchannel_ind(irq_ptr
,0);
3179 up(&irq_ptr
->setting_up_sema
);
3180 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3183 tiqdio_set_delay_target(irq_ptr
,TIQDIO_DELAY_TARGET
);
3186 sprintf(dbf_text
,"qest%4x",cdev
->private->schid
.sch_no
);
3187 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3188 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
3191 irq_ptr
->ccw
.cmd_code
=irq_ptr
->equeue
.cmd
;
3192 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3193 irq_ptr
->ccw
.count
=irq_ptr
->equeue
.count
;
3194 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(irq_ptr
->qdr
);
3196 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3198 ccw_device_set_options(cdev
, 0);
3199 result
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3200 QDIO_DOING_ESTABLISH
,0, 0,
3201 QDIO_ESTABLISH_TIMEOUT
);
3203 result2
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3204 QDIO_DOING_ESTABLISH
,0,0,
3205 QDIO_ESTABLISH_TIMEOUT
);
3206 sprintf(dbf_text
,"eq:io%4x",result
);
3207 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3209 sprintf(dbf_text
,"eq:io%4x",result
);
3210 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3212 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3213 "returned %i, next try returned %i\n",
3214 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3218 ccw_device_set_timeout(cdev
, 0);
3221 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3224 up(&irq_ptr
->setting_up_sema
);
3225 qdio_shutdown(cdev
,QDIO_FLAG_CLEANUP_USING_CLEAR
);
3229 /* Timeout is cared for already by using ccw_device_start_timeout(). */
3230 wait_event_interruptible(cdev
->private->wait_q
,
3231 irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
||
3232 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
3234 if (irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
)
3237 up(&irq_ptr
->setting_up_sema
);
3238 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3242 qdio_get_ssqd_information(irq_ptr
);
3243 /* if this gets set once, we're running under VM and can omit SVSes */
3244 if (irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
)
3247 sprintf(dbf_text
,"qdioac%2x",irq_ptr
->qdioac
);
3248 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3250 sprintf(dbf_text
,"qib ac%2x",irq_ptr
->qib
.ac
);
3251 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3253 irq_ptr
->hydra_gives_outbound_pcis
=
3254 irq_ptr
->qib
.ac
&QIB_AC_OUTBOUND_PCI_SUPPORTED
;
3255 irq_ptr
->sync_done_on_outb_pcis
=
3256 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
;
3258 qdio_initialize_set_siga_flags_input(irq_ptr
);
3259 qdio_initialize_set_siga_flags_output(irq_ptr
);
3261 up(&irq_ptr
->setting_up_sema
);
3268 qdio_activate(struct ccw_device
*cdev
, int flags
)
3270 struct qdio_irq
*irq_ptr
;
3271 int i
,result
=0,result2
;
3272 unsigned long saveflags
;
3273 char dbf_text
[20]; /* see qdio_initialize */
3275 irq_ptr
= cdev
->private->qdio_data
;
3279 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3282 down(&irq_ptr
->setting_up_sema
);
3283 if (irq_ptr
->state
==QDIO_IRQ_STATE_INACTIVE
) {
3288 sprintf(dbf_text
,"qact%4x", irq_ptr
->schid
.sch_no
);
3289 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3290 QDIO_DBF_TEXT2(0,trace
,dbf_text
);
3293 irq_ptr
->ccw
.cmd_code
=irq_ptr
->aqueue
.cmd
;
3294 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3295 irq_ptr
->ccw
.count
=irq_ptr
->aqueue
.count
;
3296 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(0);
3298 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3300 ccw_device_set_timeout(cdev
, 0);
3301 ccw_device_set_options(cdev
, CCWDEV_REPORT_ALL
);
3302 result
=ccw_device_start(cdev
,&irq_ptr
->ccw
,QDIO_DOING_ACTIVATE
,
3303 0, DOIO_DENY_PREFETCH
);
3305 result2
=ccw_device_start(cdev
,&irq_ptr
->ccw
,
3306 QDIO_DOING_ACTIVATE
,0,0);
3307 sprintf(dbf_text
,"aq:io%4x",result
);
3308 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3310 sprintf(dbf_text
,"aq:io%4x",result
);
3311 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3313 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3314 "returned %i, next try returned %i\n",
3315 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3320 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3324 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3325 if (irq_ptr
->is_thinint_irq
) {
3327 * that way we know, that, if we will get interrupted
3328 * by tiqdio_inbound_processing, qdio_unmark_q will
3331 qdio_reserve_q(irq_ptr
->input_qs
[i
]);
3332 qdio_mark_tiq(irq_ptr
->input_qs
[i
]);
3333 qdio_release_q(irq_ptr
->input_qs
[i
]);
3337 if (flags
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
) {
3338 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3339 irq_ptr
->input_qs
[i
]->is_input_q
|=
3340 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
;
3344 wait_event_interruptible_timeout(cdev
->private->wait_q
,
3346 QDIO_IRQ_STATE_STOPPED
) ||
3348 QDIO_IRQ_STATE_ERR
)),
3349 QDIO_ACTIVATE_TIMEOUT
);
3351 switch (irq_ptr
->state
) {
3352 case QDIO_IRQ_STATE_STOPPED
:
3353 case QDIO_IRQ_STATE_ERR
:
3354 up(&irq_ptr
->setting_up_sema
);
3355 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3356 down(&irq_ptr
->setting_up_sema
);
3360 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ACTIVE
);
3364 up(&irq_ptr
->setting_up_sema
);
3369 /* buffers filled forwards again to make Rick happy */
3371 qdio_do_qdio_fill_input(struct qdio_q
*q
, unsigned int qidx
,
3372 unsigned int count
, struct qdio_buffer
*buffers
)
3374 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3375 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3376 if (irq
->is_qebsm
) {
3378 set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3382 set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3385 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3390 qdio_do_qdio_fill_output(struct qdio_q
*q
, unsigned int qidx
,
3391 unsigned int count
, struct qdio_buffer
*buffers
)
3393 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3395 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3396 if (irq
->is_qebsm
) {
3398 set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3403 set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3406 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3411 do_qdio_handle_inbound(struct qdio_q
*q
, unsigned int callflags
,
3412 unsigned int qidx
, unsigned int count
,
3413 struct qdio_buffer
*buffers
)
3417 /* This is the inbound handling of queues */
3418 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3420 qdio_do_qdio_fill_input(q
,qidx
,count
,buffers
);
3422 if ((used_elements
+count
==QDIO_MAX_BUFFERS_PER_Q
)&&
3423 (callflags
&QDIO_FLAG_UNDER_INTERRUPT
))
3424 atomic_xchg(&q
->polling
,0);
3428 if (callflags
&QDIO_FLAG_DONT_SIGA
)
3433 result
=qdio_siga_input(q
);
3436 q
->error_status_flags
|=
3437 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
3438 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
3439 q
->siga_error
=result
;
3447 do_qdio_handle_outbound(struct qdio_q
*q
, unsigned int callflags
,
3448 unsigned int qidx
, unsigned int count
,
3449 struct qdio_buffer
*buffers
)
3452 unsigned int cnt
, start_buf
;
3453 unsigned char state
= 0;
3454 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3456 /* This is the outbound handling of queues */
3457 if (qdio_performance_stats
)
3458 perf_stats
.start_time_outbound
=NOW
;
3460 qdio_do_qdio_fill_output(q
,qidx
,count
,buffers
);
3462 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3464 if (callflags
&QDIO_FLAG_DONT_SIGA
) {
3465 if (qdio_performance_stats
) {
3466 perf_stats
.outbound_time
+=NOW
-perf_stats
.start_time_outbound
;
3467 perf_stats
.outbound_cnt
++;
3471 if (q
->is_iqdio_q
) {
3472 /* one siga for every sbal */
3474 qdio_kick_outbound_q(q
);
3476 __qdio_outbound_processing(q
);
3478 /* under VM, we do a SIGA sync unconditionally */
3482 * w/o shadow queues (else branch of
3483 * SYNC_MEMORY :-/ ), we try to
3484 * fast-requeue buffers
3486 if (irq
->is_qebsm
) {
3488 start_buf
= ((qidx
+QDIO_MAX_BUFFERS_PER_Q
-1) &
3489 (QDIO_MAX_BUFFERS_PER_Q
-1));
3490 qdio_do_eqbs(q
, &state
, &start_buf
, &cnt
);
3492 state
= q
->slsb
.acc
.val
[(qidx
+QDIO_MAX_BUFFERS_PER_Q
-1)
3493 &(QDIO_MAX_BUFFERS_PER_Q
-1) ];
3494 if (state
!= SLSB_CU_OUTPUT_PRIMED
) {
3495 qdio_kick_outbound_q(q
);
3497 QDIO_DBF_TEXT3(0,trace
, "fast-req");
3498 if (qdio_performance_stats
)
3499 perf_stats
.fast_reqs
++;
3503 * only marking the q could take too long,
3504 * the upper layer module could do a lot of
3505 * traffic in that time
3507 __qdio_outbound_processing(q
);
3510 if (qdio_performance_stats
) {
3511 perf_stats
.outbound_time
+=NOW
-perf_stats
.start_time_outbound
;
3512 perf_stats
.outbound_cnt
++;
3516 /* count must be 1 in iqdio */
3518 do_QDIO(struct ccw_device
*cdev
,unsigned int callflags
,
3519 unsigned int queue_number
, unsigned int qidx
,
3520 unsigned int count
,struct qdio_buffer
*buffers
)
3522 struct qdio_irq
*irq_ptr
;
3523 #ifdef CONFIG_QDIO_DEBUG
3526 sprintf(dbf_text
,"doQD%04x",cdev
->private->schid
.sch_no
);
3527 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3528 #endif /* CONFIG_QDIO_DEBUG */
3530 if ( (qidx
>QDIO_MAX_BUFFERS_PER_Q
) ||
3531 (count
>QDIO_MAX_BUFFERS_PER_Q
) ||
3532 (queue_number
>QDIO_MAX_QUEUES_PER_IRQ
) )
3538 irq_ptr
= cdev
->private->qdio_data
;
3542 #ifdef CONFIG_QDIO_DEBUG
3543 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3544 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->input_qs
[queue_number
],
3547 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->output_qs
[queue_number
],
3549 sprintf(dbf_text
,"flag%04x",callflags
);
3550 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3551 sprintf(dbf_text
,"qi%02xct%02x",qidx
,count
);
3552 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3553 #endif /* CONFIG_QDIO_DEBUG */
3555 if (irq_ptr
->state
!=QDIO_IRQ_STATE_ACTIVE
)
3558 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3559 do_qdio_handle_inbound(irq_ptr
->input_qs
[queue_number
],
3560 callflags
, qidx
, count
, buffers
);
3561 else if (callflags
&QDIO_FLAG_SYNC_OUTPUT
)
3562 do_qdio_handle_outbound(irq_ptr
->output_qs
[queue_number
],
3563 callflags
, qidx
, count
, buffers
);
3565 QDIO_DBF_TEXT3(1,trace
,"doQD:inv");
3572 qdio_perf_procfile_read(char *buffer
, char **buffer_location
, off_t offset
,
3573 int buffer_length
, int *eof
, void *data
)
3577 /* we are always called with buffer_length=4k, so we all
3578 deliver on the first read */
3582 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3583 _OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc
,i_p_c
);
3584 _OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc
,ii_p_c
);
3585 _OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc
,o_p_c
);
3586 _OUTP_IT("Number of tasklet runs (total) : %lu\n",
3587 perf_stats
.tl_runs
);
3589 _OUTP_IT("Number of SIGA sync's issued : %lu\n",
3590 perf_stats
.siga_syncs
);
3591 _OUTP_IT("Number of SIGA in's issued : %lu\n",
3592 perf_stats
.siga_ins
);
3593 _OUTP_IT("Number of SIGA out's issued : %lu\n",
3594 perf_stats
.siga_outs
);
3595 _OUTP_IT("Number of PCIs caught : %lu\n",
3597 _OUTP_IT("Number of adapter interrupts caught : %lu\n",
3598 perf_stats
.thinints
);
3599 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %lu\n",
3600 perf_stats
.fast_reqs
);
3602 _OUTP_IT("Total time of all inbound actions (us) incl. UL : %lu\n",
3603 perf_stats
.inbound_time
);
3604 _OUTP_IT("Number of inbound transfers : %lu\n",
3605 perf_stats
.inbound_cnt
);
3606 _OUTP_IT("Total time of all outbound do_QDIOs (us) : %lu\n",
3607 perf_stats
.outbound_time
);
3608 _OUTP_IT("Number of do_QDIOs outbound : %lu\n",
3609 perf_stats
.outbound_cnt
);
3615 static struct proc_dir_entry
*qdio_perf_proc_file
;
3618 qdio_add_procfs_entry(void)
3620 proc_perf_file_registration
=0;
3621 qdio_perf_proc_file
=create_proc_entry(QDIO_PERF
,
3622 S_IFREG
|0444,&proc_root
);
3623 if (qdio_perf_proc_file
) {
3624 qdio_perf_proc_file
->read_proc
=&qdio_perf_procfile_read
;
3625 } else proc_perf_file_registration
=-1;
3627 if (proc_perf_file_registration
)
3628 QDIO_PRINT_WARN("was not able to register perf. " \
3629 "proc-file (%i).\n",
3630 proc_perf_file_registration
);
3634 qdio_remove_procfs_entry(void)
3636 perf_stats
.tl_runs
=0;
3638 if (!proc_perf_file_registration
) /* means if it went ok earlier */
3639 remove_proc_entry(QDIO_PERF
,&proc_root
);
3643 * attributes in sysfs
3644 *****************************************************************************/
3647 qdio_performance_stats_show(struct bus_type
*bus
, char *buf
)
3649 return sprintf(buf
, "%i\n", qdio_performance_stats
? 1 : 0);
3653 qdio_performance_stats_store(struct bus_type
*bus
, const char *buf
, size_t count
)
3658 i
= simple_strtoul(buf
, &tmp
, 16);
3659 if ((i
== 0) || (i
== 1)) {
3660 if (i
== qdio_performance_stats
)
3662 qdio_performance_stats
= i
;
3664 /* reset perf. stat. info */
3671 memset(&perf_stats
, 0, sizeof(struct qdio_perf_stats
));
3674 QDIO_PRINT_WARN("QDIO performance_stats: write 0 or 1 to this file!\n");
3680 static BUS_ATTR(qdio_performance_stats
, 0644, qdio_performance_stats_show
,
3681 qdio_performance_stats_store
);
3684 tiqdio_register_thinints(void)
3687 register_thinint_result
=
3688 s390_register_adapter_interrupt(&tiqdio_thinint_handler
);
3689 if (register_thinint_result
) {
3690 sprintf(dbf_text
,"regthn%x",(register_thinint_result
&0xff));
3691 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3692 QDIO_PRINT_ERR("failed to register adapter handler " \
3693 "(rc=%i).\nAdapter interrupts might " \
3694 "not work. Continuing.\n",
3695 register_thinint_result
);
3700 tiqdio_unregister_thinints(void)
3702 if (!register_thinint_result
)
3703 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler
);
3707 qdio_get_qdio_memory(void)
3710 indicator_used
[0]=1;
3712 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
3713 indicator_used
[i
]=0;
3714 indicators
= kzalloc(sizeof(__u32
)*(INDICATORS_PER_CACHELINE
),
3722 qdio_release_qdio_memory(void)
3729 qdio_unregister_dbf_views(void)
3732 debug_unregister(qdio_dbf_setup
);
3734 debug_unregister(qdio_dbf_sbal
);
3736 debug_unregister(qdio_dbf_sense
);
3738 debug_unregister(qdio_dbf_trace
);
3739 #ifdef CONFIG_QDIO_DEBUG
3740 if (qdio_dbf_slsb_out
)
3741 debug_unregister(qdio_dbf_slsb_out
);
3742 if (qdio_dbf_slsb_in
)
3743 debug_unregister(qdio_dbf_slsb_in
);
3744 #endif /* CONFIG_QDIO_DEBUG */
3748 qdio_register_dbf_views(void)
3750 qdio_dbf_setup
=debug_register(QDIO_DBF_SETUP_NAME
,
3751 QDIO_DBF_SETUP_PAGES
,
3752 QDIO_DBF_SETUP_NR_AREAS
,
3753 QDIO_DBF_SETUP_LEN
);
3754 if (!qdio_dbf_setup
)
3756 debug_register_view(qdio_dbf_setup
,&debug_hex_ascii_view
);
3757 debug_set_level(qdio_dbf_setup
,QDIO_DBF_SETUP_LEVEL
);
3759 qdio_dbf_sbal
=debug_register(QDIO_DBF_SBAL_NAME
,
3760 QDIO_DBF_SBAL_PAGES
,
3761 QDIO_DBF_SBAL_NR_AREAS
,
3766 debug_register_view(qdio_dbf_sbal
,&debug_hex_ascii_view
);
3767 debug_set_level(qdio_dbf_sbal
,QDIO_DBF_SBAL_LEVEL
);
3769 qdio_dbf_sense
=debug_register(QDIO_DBF_SENSE_NAME
,
3770 QDIO_DBF_SENSE_PAGES
,
3771 QDIO_DBF_SENSE_NR_AREAS
,
3772 QDIO_DBF_SENSE_LEN
);
3773 if (!qdio_dbf_sense
)
3776 debug_register_view(qdio_dbf_sense
,&debug_hex_ascii_view
);
3777 debug_set_level(qdio_dbf_sense
,QDIO_DBF_SENSE_LEVEL
);
3779 qdio_dbf_trace
=debug_register(QDIO_DBF_TRACE_NAME
,
3780 QDIO_DBF_TRACE_PAGES
,
3781 QDIO_DBF_TRACE_NR_AREAS
,
3782 QDIO_DBF_TRACE_LEN
);
3783 if (!qdio_dbf_trace
)
3786 debug_register_view(qdio_dbf_trace
,&debug_hex_ascii_view
);
3787 debug_set_level(qdio_dbf_trace
,QDIO_DBF_TRACE_LEVEL
);
3789 #ifdef CONFIG_QDIO_DEBUG
3790 qdio_dbf_slsb_out
=debug_register(QDIO_DBF_SLSB_OUT_NAME
,
3791 QDIO_DBF_SLSB_OUT_PAGES
,
3792 QDIO_DBF_SLSB_OUT_NR_AREAS
,
3793 QDIO_DBF_SLSB_OUT_LEN
);
3794 if (!qdio_dbf_slsb_out
)
3796 debug_register_view(qdio_dbf_slsb_out
,&debug_hex_ascii_view
);
3797 debug_set_level(qdio_dbf_slsb_out
,QDIO_DBF_SLSB_OUT_LEVEL
);
3799 qdio_dbf_slsb_in
=debug_register(QDIO_DBF_SLSB_IN_NAME
,
3800 QDIO_DBF_SLSB_IN_PAGES
,
3801 QDIO_DBF_SLSB_IN_NR_AREAS
,
3802 QDIO_DBF_SLSB_IN_LEN
);
3803 if (!qdio_dbf_slsb_in
)
3805 debug_register_view(qdio_dbf_slsb_in
,&debug_hex_ascii_view
);
3806 debug_set_level(qdio_dbf_slsb_in
,QDIO_DBF_SLSB_IN_LEVEL
);
3807 #endif /* CONFIG_QDIO_DEBUG */
3810 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3811 qdio_unregister_dbf_views();
3815 static void *qdio_mempool_alloc(gfp_t gfp_mask
, void *size
)
3817 return (void *) get_zeroed_page(gfp_mask
|GFP_DMA
);
3820 static void qdio_mempool_free(void *element
, void *size
)
3822 free_page((unsigned long) element
);
3831 printk("qdio: loading %s\n",version
);
3833 res
=qdio_get_qdio_memory();
3837 res
= qdio_register_dbf_views();
3841 QDIO_DBF_TEXT0(0,setup
,"initQDIO");
3842 res
= bus_create_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3844 memset((void*)&perf_stats
,0,sizeof(perf_stats
));
3845 QDIO_DBF_TEXT0(0,setup
,"perfstat");
3847 QDIO_DBF_HEX0(0,setup
,&ptr
,sizeof(void*));
3849 qdio_add_procfs_entry();
3851 qdio_mempool_scssc
= mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS
,
3853 qdio_mempool_free
, NULL
);
3855 if (tiqdio_check_chsc_availability())
3856 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3858 tiqdio_register_thinints();
3866 tiqdio_unregister_thinints();
3867 qdio_remove_procfs_entry();
3868 qdio_release_qdio_memory();
3869 qdio_unregister_dbf_views();
3870 mempool_destroy(qdio_mempool_scssc
);
3871 bus_remove_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3872 printk("qdio: %s: module removed\n",version
);
3875 module_init(init_QDIO
);
3876 module_exit(cleanup_QDIO
);
3878 EXPORT_SYMBOL(qdio_allocate
);
3879 EXPORT_SYMBOL(qdio_establish
);
3880 EXPORT_SYMBOL(qdio_initialize
);
3881 EXPORT_SYMBOL(qdio_activate
);
3882 EXPORT_SYMBOL(do_QDIO
);
3883 EXPORT_SYMBOL(qdio_shutdown
);
3884 EXPORT_SYMBOL(qdio_free
);
3885 EXPORT_SYMBOL(qdio_cleanup
);
3886 EXPORT_SYMBOL(qdio_synchronize
);