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 fill
983 * level is too high. for synchronous queues, the fill
984 * level will never be that high.
986 if (atomic_read(&q
->number_of_buffers_used
)>
987 IQDIO_FILL_LEVEL_TO_POLL
)
990 } else if (!q
->hydra_gives_outbound_pcis
)
991 if (!qdio_is_outbound_q_done(q
))
998 qdio_outbound_processing(struct qdio_q
*q
)
1000 __qdio_outbound_processing(q
);
1003 /************************* INBOUND ROUTINES *******************************/
1007 qdio_get_inbound_buffer_frontier(struct qdio_q
*q
)
1009 struct qdio_irq
*irq
;
1011 volatile char *slsb
;
1012 unsigned int count
= 1;
1013 int first_not_to_check
;
1014 #ifdef CONFIG_QDIO_DEBUG
1016 #endif /* CONFIG_QDIO_DEBUG */
1017 #ifdef QDIO_USE_PROCESSING_STATE
1018 int last_position
=-1;
1019 #endif /* QDIO_USE_PROCESSING_STATE */
1021 QDIO_DBF_TEXT4(0,trace
,"getibfro");
1022 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1024 irq
= (struct qdio_irq
*) q
->irq_ptr
;
1026 return qdio_qebsm_get_inbound_buffer_frontier(q
);
1028 slsb
=&q
->slsb
.acc
.val
[0];
1029 f_mod_no
=f
=q
->first_to_check
;
1031 * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1034 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
1035 (QDIO_MAX_BUFFERS_PER_Q
-1));
1038 * we don't use this one, as a PCI or we after a thin interrupt
1039 * will sync the queues
1044 f_mod_no
=f
&(QDIO_MAX_BUFFERS_PER_Q
-1);
1045 if (f
==first_not_to_check
)
1047 switch (slsb
[f_mod_no
]) {
1049 /* CU_EMPTY means frontier is reached */
1050 case SLSB_CU_INPUT_EMPTY
:
1051 QDIO_DBF_TEXT5(0,trace
,"inptempt");
1054 /* P_PRIMED means set slsb to P_PROCESSING and move on */
1055 case SLSB_P_INPUT_PRIMED
:
1056 QDIO_DBF_TEXT5(0,trace
,"inptprim");
1058 #ifdef QDIO_USE_PROCESSING_STATE
1060 * as soon as running under VM, polling the input queues will
1061 * kill VM in terms of CP overhead
1064 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1066 /* set the previous buffer to NOT_INIT. The current
1067 * buffer will be set to PROCESSING at the end of
1068 * this function to avoid further interrupts. */
1069 if (last_position
>=0)
1070 set_slsb(q
, &last_position
,
1071 SLSB_P_INPUT_NOT_INIT
, &count
);
1072 atomic_set(&q
->polling
,1);
1073 last_position
=f_mod_no
;
1075 #else /* QDIO_USE_PROCESSING_STATE */
1076 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1077 #endif /* QDIO_USE_PROCESSING_STATE */
1079 * not needed, as the inbound queue will be synced on the next
1080 * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1084 atomic_dec(&q
->number_of_buffers_used
);
1087 case SLSB_P_INPUT_NOT_INIT
:
1088 case SLSB_P_INPUT_PROCESSING
:
1089 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
1092 /* P_ERROR means frontier is reached, break and report error */
1093 case SLSB_P_INPUT_ERROR
:
1094 #ifdef CONFIG_QDIO_DEBUG
1095 sprintf(dbf_text
,"inperr%2x",f_mod_no
);
1096 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
1097 #endif /* CONFIG_QDIO_DEBUG */
1098 QDIO_DBF_HEX2(1,sbal
,q
->sbal
[f_mod_no
],256);
1100 /* kind of process the buffer */
1101 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1104 q
->error_status_flags
|=
1105 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
1106 q
->qdio_error
=SLSB_P_INPUT_ERROR
;
1107 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
1109 /* we increment the frontier, as this buffer
1110 * was processed obviously */
1111 f_mod_no
=(f_mod_no
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1112 atomic_dec(&q
->number_of_buffers_used
);
1114 #ifdef QDIO_USE_PROCESSING_STATE
1116 #endif /* QDIO_USE_PROCESSING_STATE */
1120 /* everything else means frontier not changed (HALTED or so) */
1125 q
->first_to_check
=f_mod_no
;
1127 #ifdef QDIO_USE_PROCESSING_STATE
1128 if (last_position
>=0)
1129 set_slsb(q
, &last_position
, SLSB_P_INPUT_PROCESSING
, &count
);
1130 #endif /* QDIO_USE_PROCESSING_STATE */
1132 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
1134 return q
->first_to_check
;
1138 qdio_has_inbound_q_moved(struct qdio_q
*q
)
1142 static int old_pcis
=0;
1143 static int old_thinints
=0;
1145 if (qdio_performance_stats
) {
1146 if ((old_pcis
==perf_stats
.pcis
)&&
1147 (old_thinints
==perf_stats
.thinints
))
1148 perf_stats
.start_time_inbound
=NOW
;
1150 old_pcis
=perf_stats
.pcis
;
1153 i
=qdio_get_inbound_buffer_frontier(q
);
1154 if ( (i
!=GET_SAVED_FRONTIER(q
)) ||
1155 (q
->error_status_flags
&QDIO_STATUS_LOOK_FOR_ERROR
) ) {
1157 if ((!q
->siga_sync
)&&(!q
->hydra_gives_outbound_pcis
))
1160 QDIO_DBF_TEXT4(0,trace
,"inhasmvd");
1161 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1164 QDIO_DBF_TEXT4(0,trace
,"inhsntmv");
1165 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1170 /* means, no more buffers to be filled */
1172 tiqdio_is_inbound_q_done(struct qdio_q
*q
)
1175 unsigned int start_buf
, count
;
1176 unsigned char state
= 0;
1177 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1179 #ifdef CONFIG_QDIO_DEBUG
1183 no_used
=atomic_read(&q
->number_of_buffers_used
);
1185 /* propagate the change from 82 to 80 through VM */
1188 #ifdef CONFIG_QDIO_DEBUG
1190 sprintf(dbf_text
,"iqisnt%02x",no_used
);
1191 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1193 QDIO_DBF_TEXT4(0,trace
,"iniqisdo");
1195 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1196 #endif /* CONFIG_QDIO_DEBUG */
1200 if (!q
->siga_sync
&& !irq
->is_qebsm
)
1201 /* we'll check for more primed buffers in qeth_stop_polling */
1203 if (irq
->is_qebsm
) {
1205 start_buf
= q
->first_to_check
;
1206 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1208 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1209 if (state
!= SLSB_P_INPUT_PRIMED
)
1211 * nothing more to do, if next buffer is not PRIMED.
1212 * note that we did a SYNC_MEMORY before, that there
1213 * has been a sychnronization.
1214 * we will return 0 below, as there is nothing to do
1215 * (stop_polling not necessary, as we have not been
1216 * using the PROCESSING state
1221 * ok, the next input buffer is primed. that means, that device state
1222 * change indicator and adapter local summary are set, so we will find
1224 * we will return 0 below, as there is nothing to do, except scheduling
1225 * ourselves for the next time.
1227 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1233 qdio_is_inbound_q_done(struct qdio_q
*q
)
1236 unsigned int start_buf
, count
;
1237 unsigned char state
= 0;
1238 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1240 #ifdef CONFIG_QDIO_DEBUG
1244 no_used
=atomic_read(&q
->number_of_buffers_used
);
1247 * we need that one for synchronization with the adapter, as it
1248 * does a kind of PCI avoidance
1253 QDIO_DBF_TEXT4(0,trace
,"inqisdnA");
1254 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1255 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1258 if (irq
->is_qebsm
) {
1260 start_buf
= q
->first_to_check
;
1261 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1263 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1264 if (state
== SLSB_P_INPUT_PRIMED
) {
1265 /* we got something to do */
1266 QDIO_DBF_TEXT4(0,trace
,"inqisntA");
1267 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1271 /* on VM, we don't poll, so the q is always done here */
1274 if (q
->hydra_gives_outbound_pcis
)
1278 * at this point we know, that inbound first_to_check
1279 * has (probably) not moved (see qdio_inbound_processing)
1281 if (NOW
>GET_SAVED_TIMESTAMP(q
)+q
->timing
.threshold
) {
1282 #ifdef CONFIG_QDIO_DEBUG
1283 QDIO_DBF_TEXT4(0,trace
,"inqisdon");
1284 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1285 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1286 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1287 #endif /* CONFIG_QDIO_DEBUG */
1290 #ifdef CONFIG_QDIO_DEBUG
1291 QDIO_DBF_TEXT4(0,trace
,"inqisntd");
1292 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1293 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1294 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1295 #endif /* CONFIG_QDIO_DEBUG */
1301 qdio_kick_inbound_handler(struct qdio_q
*q
)
1303 int count
, start
, end
, real_end
, i
;
1304 #ifdef CONFIG_QDIO_DEBUG
1308 QDIO_DBF_TEXT4(0,trace
,"kickinh");
1309 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1311 start
=q
->first_element_to_kick
;
1312 real_end
=q
->first_to_check
;
1313 end
=(real_end
+QDIO_MAX_BUFFERS_PER_Q
-1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1321 i
=(i
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1324 #ifdef CONFIG_QDIO_DEBUG
1325 sprintf(dbf_text
,"s=%2xc=%2x",start
,count
);
1326 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1327 #endif /* CONFIG_QDIO_DEBUG */
1329 if (likely(q
->state
==QDIO_IRQ_STATE_ACTIVE
))
1331 QDIO_STATUS_INBOUND_INT
|q
->error_status_flags
,
1332 q
->qdio_error
,q
->siga_error
,q
->q_no
,start
,count
,
1335 /* for the next time: */
1336 q
->first_element_to_kick
=real_end
;
1339 q
->error_status_flags
=0;
1341 if (qdio_performance_stats
) {
1342 perf_stats
.inbound_time
+=NOW
-perf_stats
.start_time_inbound
;
1343 perf_stats
.inbound_cnt
++;
1348 __tiqdio_inbound_processing(struct qdio_q
*q
, int spare_ind_was_set
)
1350 struct qdio_irq
*irq_ptr
;
1354 QDIO_DBF_TEXT4(0,trace
,"iqinproc");
1355 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1358 * we first want to reserve the q, so that we know, that we don't
1359 * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1362 if (unlikely(qdio_reserve_q(q
))) {
1364 if (qdio_performance_stats
)
1367 * as we might just be about to stop polling, we make
1368 * sure that we check again at least once more
1373 if (qdio_performance_stats
)
1375 if (unlikely(atomic_read(&q
->is_in_shutdown
))) {
1381 * we reset spare_ind_was_set, when the queue does not use the
1384 if (spare_ind_was_set
)
1385 spare_ind_was_set
= (q
->dev_st_chg_ind
== &spare_indicator
);
1387 if (!(*(q
->dev_st_chg_ind
)) && !spare_ind_was_set
)
1390 * q->dev_st_chg_ind is the indicator, be it shared or not.
1391 * only clear it, if indicator is non-shared
1393 if (!spare_ind_was_set
)
1394 tiqdio_clear_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1396 if (q
->hydra_gives_outbound_pcis
) {
1397 if (!q
->siga_sync_done_on_thinints
) {
1399 } else if ((!q
->siga_sync_done_on_outb_tis
)&&
1400 (q
->hydra_gives_outbound_pcis
)) {
1401 SYNC_MEMORY_ALL_OUTB
;
1407 * maybe we have to do work on our outbound queues... at least
1408 * we have to check the outbound-int-capable thinint-capable
1411 if (q
->hydra_gives_outbound_pcis
) {
1412 irq_ptr
= (struct qdio_irq
*)q
->irq_ptr
;
1413 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1414 oq
= irq_ptr
->output_qs
[i
];
1415 if (!qdio_is_outbound_q_done(oq
)) {
1416 if (qdio_performance_stats
)
1417 perf_stats
.tl_runs
--;
1418 __qdio_outbound_processing(oq
);
1423 if (!qdio_has_inbound_q_moved(q
))
1426 qdio_kick_inbound_handler(q
);
1427 if (tiqdio_is_inbound_q_done(q
))
1428 if (!qdio_stop_polling(q
)) {
1430 * we set the flags to get into the stuff next time,
1431 * see also comment in qdio_stop_polling
1433 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1441 tiqdio_inbound_processing(struct qdio_q
*q
)
1443 __tiqdio_inbound_processing(q
, atomic_read(&spare_indicator_usecount
));
1447 __qdio_inbound_processing(struct qdio_q
*q
)
1451 QDIO_DBF_TEXT4(0,trace
,"qinproc");
1452 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1454 if (unlikely(qdio_reserve_q(q
))) {
1456 if (qdio_performance_stats
)
1458 /* as we're sissies, we'll check next time */
1459 if (likely(!atomic_read(&q
->is_in_shutdown
))) {
1461 QDIO_DBF_TEXT4(0,trace
,"busy,agn");
1465 if (qdio_performance_stats
) {
1467 perf_stats
.tl_runs
++;
1471 if (qdio_has_inbound_q_moved(q
)) {
1472 qdio_kick_inbound_handler(q
);
1473 if (!qdio_stop_polling(q
)) {
1475 if (q_laps
<QDIO_Q_LAPS
)
1480 if (!qdio_is_inbound_q_done(q
))
1481 /* means poll time is not yet over */
1489 qdio_inbound_processing(struct qdio_q
*q
)
1491 __qdio_inbound_processing(q
);
1494 /************************* MAIN ROUTINES *******************************/
1496 #ifdef QDIO_USE_PROCESSING_STATE
1498 tiqdio_reset_processing_state(struct qdio_q
*q
, int q_laps
)
1506 * under VM, we have not used the PROCESSING state, so no
1507 * need to stop polling
1512 if (unlikely(qdio_reserve_q(q
))) {
1514 if (qdio_performance_stats
)
1517 * as we might just be about to stop polling, we make
1518 * sure that we check again at least once more
1522 * sanity -- we'd get here without setting the
1525 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1529 if (qdio_stop_polling(q
)) {
1533 if (q_laps
<QDIO_Q_LAPS
-1) {
1538 * we set the flags to get into the stuff
1539 * next time, see also comment in qdio_stop_polling
1541 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1547 #endif /* QDIO_USE_PROCESSING_STATE */
1550 tiqdio_inbound_checks(void)
1553 int spare_ind_was_set
=0;
1554 #ifdef QDIO_USE_PROCESSING_STATE
1556 #endif /* QDIO_USE_PROCESSING_STATE */
1558 QDIO_DBF_TEXT4(0,trace
,"iqdinbck");
1559 QDIO_DBF_TEXT5(0,trace
,"iqlocsum");
1561 #ifdef QDIO_USE_PROCESSING_STATE
1563 #endif /* QDIO_USE_PROCESSING_STATE */
1565 /* when the spare indicator is used and set, save that and clear it */
1566 if ((atomic_read(&spare_indicator_usecount
)) && spare_indicator
) {
1567 spare_ind_was_set
= 1;
1568 tiqdio_clear_summary_bit((__u32
*)&spare_indicator
);
1571 q
=(struct qdio_q
*)tiq_list
;
1575 __tiqdio_inbound_processing(q
, spare_ind_was_set
);
1576 q
=(struct qdio_q
*)q
->list_next
;
1577 } while (q
!=(struct qdio_q
*)tiq_list
);
1579 #ifdef QDIO_USE_PROCESSING_STATE
1580 q
=(struct qdio_q
*)tiq_list
;
1584 ret
= tiqdio_reset_processing_state(q
, q_laps
);
1591 q
= (struct qdio_q
*)q
->list_next
;
1597 } while (q
!=(struct qdio_q
*)tiq_list
);
1598 #endif /* QDIO_USE_PROCESSING_STATE */
1602 tiqdio_tl(unsigned long data
)
1604 QDIO_DBF_TEXT4(0,trace
,"iqdio_tl");
1606 if (qdio_performance_stats
)
1607 perf_stats
.tl_runs
++;
1609 tiqdio_inbound_checks();
1612 /********************* GENERAL HELPER_ROUTINES ***********************/
1615 qdio_release_irq_memory(struct qdio_irq
*irq_ptr
)
1619 for (i
=0;i
<QDIO_MAX_QUEUES_PER_IRQ
;i
++) {
1620 if (!irq_ptr
->input_qs
[i
])
1623 kfree(irq_ptr
->input_qs
[i
]->slib
);
1624 kfree(irq_ptr
->input_qs
[i
]);
1627 if (!irq_ptr
->output_qs
[i
])
1630 kfree(irq_ptr
->output_qs
[i
]->slib
);
1631 kfree(irq_ptr
->output_qs
[i
]);
1634 kfree(irq_ptr
->qdr
);
1635 free_page((unsigned long) irq_ptr
);
1639 qdio_set_impl_params(struct qdio_irq
*irq_ptr
,
1640 unsigned int qib_param_field_format
,
1641 /* pointer to 128 bytes or NULL, if no param field */
1642 unsigned char *qib_param_field
,
1643 /* pointer to no_queues*128 words of data or NULL */
1644 unsigned int no_input_qs
,
1645 unsigned int no_output_qs
,
1646 unsigned long *input_slib_elements
,
1647 unsigned long *output_slib_elements
)
1654 irq_ptr
->qib
.pfmt
=qib_param_field_format
;
1655 if (qib_param_field
)
1656 memcpy(irq_ptr
->qib
.parm
,qib_param_field
,
1657 QDIO_MAX_BUFFERS_PER_Q
);
1659 if (input_slib_elements
)
1660 for (i
=0;i
<no_input_qs
;i
++) {
1661 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1662 irq_ptr
->input_qs
[i
]->slib
->slibe
[j
].parms
=
1663 input_slib_elements
[
1664 i
*QDIO_MAX_BUFFERS_PER_Q
+j
];
1666 if (output_slib_elements
)
1667 for (i
=0;i
<no_output_qs
;i
++) {
1668 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1669 irq_ptr
->output_qs
[i
]->slib
->slibe
[j
].parms
=
1670 output_slib_elements
[
1671 i
*QDIO_MAX_BUFFERS_PER_Q
+j
];
1676 qdio_alloc_qs(struct qdio_irq
*irq_ptr
,
1677 int no_input_qs
, int no_output_qs
)
1683 for (i
=0;i
<no_input_qs
;i
++) {
1684 q
= kzalloc(sizeof(struct qdio_q
), GFP_KERNEL
);
1687 QDIO_PRINT_ERR("kmalloc of q failed!\n");
1691 q
->slib
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1693 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1697 irq_ptr
->input_qs
[i
]=q
;
1700 for (i
=0;i
<no_output_qs
;i
++) {
1701 q
= kzalloc(sizeof(struct qdio_q
), GFP_KERNEL
);
1707 q
->slib
=kmalloc(PAGE_SIZE
,GFP_KERNEL
);
1709 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1713 irq_ptr
->output_qs
[i
]=q
;
1722 qdio_fill_qs(struct qdio_irq
*irq_ptr
, struct ccw_device
*cdev
,
1723 int no_input_qs
, int no_output_qs
,
1724 qdio_handler_t
*input_handler
,
1725 qdio_handler_t
*output_handler
,
1726 unsigned long int_parm
,int q_format
,
1727 unsigned long flags
,
1728 void **inbound_sbals_array
,
1729 void **outbound_sbals_array
)
1733 char dbf_text
[20]; /* see qdio_initialize */
1737 sprintf(dbf_text
,"qfqs%4x",cdev
->private->schid
.sch_no
);
1738 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1739 for (i
=0;i
<no_input_qs
;i
++) {
1740 q
=irq_ptr
->input_qs
[i
];
1742 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1743 sprintf(dbf_text
,"in-q%4x",i
);
1744 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1745 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1747 memset(q
->slib
,0,PAGE_SIZE
);
1748 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1752 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1753 q
->sbal
[j
]=*(inbound_sbals_array
++);
1755 q
->queue_type
=q_format
;
1756 q
->int_parm
=int_parm
;
1757 q
->schid
= irq_ptr
->schid
;
1758 q
->irq_ptr
= irq_ptr
;
1763 q
->first_to_check
=0;
1765 q
->handler
=input_handler
;
1766 q
->dev_st_chg_ind
=irq_ptr
->dev_st_chg_ind
;
1768 q
->tasklet
.data
=(unsigned long)q
;
1769 /* q->is_thinint_q isn't valid at this time, but
1770 * irq_ptr->is_thinint_irq is */
1771 q
->tasklet
.func
=(void(*)(unsigned long))
1772 ((irq_ptr
->is_thinint_irq
)?&tiqdio_inbound_processing
:
1773 &qdio_inbound_processing
);
1775 /* actually this is not used for inbound queues. yet. */
1776 atomic_set(&q
->busy_siga_counter
,0);
1777 q
->timing
.busy_start
=0;
1779 /* for (j=0;j<QDIO_STATS_NUMBER;j++)
1780 q->timing.last_transfer_times[j]=(qdio_get_micros()/
1781 QDIO_STATS_NUMBER)*j;
1782 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1786 if (i
>0) irq_ptr
->input_qs
[i
-1]->slib
->nsliba
=
1787 (unsigned long)(q
->slib
);
1788 q
->slib
->sla
=(unsigned long)(q
->sl
);
1789 q
->slib
->slsba
=(unsigned long)(&q
->slsb
.acc
.val
[0]);
1792 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1793 q
->sl
->element
[j
].sbal
=(unsigned long)(q
->sbal
[j
]);
1795 QDIO_DBF_TEXT2(0,setup
,"sl-sb-b0");
1797 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1798 ptr
=(void*)&q
->slsb
;
1799 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1800 ptr
=(void*)q
->sbal
[0];
1801 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1804 if (!irq_ptr
->is_qebsm
) {
1805 unsigned int count
= 1;
1806 for (j
= 0; j
< QDIO_MAX_BUFFERS_PER_Q
; j
++)
1807 set_slsb(q
, &j
, SLSB_P_INPUT_NOT_INIT
, &count
);
1811 for (i
=0;i
<no_output_qs
;i
++) {
1812 q
=irq_ptr
->output_qs
[i
];
1813 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1815 sprintf(dbf_text
,"outq%4x",i
);
1816 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1817 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1819 memset(q
->slib
,0,PAGE_SIZE
);
1820 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1824 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1825 q
->sbal
[j
]=*(outbound_sbals_array
++);
1827 q
->queue_type
=q_format
;
1828 q
->int_parm
=int_parm
;
1830 q
->schid
= irq_ptr
->schid
;
1832 q
->irq_ptr
= irq_ptr
;
1835 q
->first_to_check
=0;
1837 q
->handler
=output_handler
;
1839 q
->tasklet
.data
=(unsigned long)q
;
1840 q
->tasklet
.func
=(void(*)(unsigned long))
1841 &qdio_outbound_processing
;
1843 atomic_set(&q
->busy_siga_counter
,0);
1844 q
->timing
.busy_start
=0;
1847 if (i
>0) irq_ptr
->output_qs
[i
-1]->slib
->nsliba
=
1848 (unsigned long)(q
->slib
);
1849 q
->slib
->sla
=(unsigned long)(q
->sl
);
1850 q
->slib
->slsba
=(unsigned long)(&q
->slsb
.acc
.val
[0]);
1853 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1854 q
->sl
->element
[j
].sbal
=(unsigned long)(q
->sbal
[j
]);
1856 QDIO_DBF_TEXT2(0,setup
,"sl-sb-b0");
1858 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1859 ptr
=(void*)&q
->slsb
;
1860 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1861 ptr
=(void*)q
->sbal
[0];
1862 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1865 if (!irq_ptr
->is_qebsm
) {
1866 unsigned int count
= 1;
1867 for (j
= 0; j
< QDIO_MAX_BUFFERS_PER_Q
; j
++)
1868 set_slsb(q
, &j
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
1874 qdio_fill_thresholds(struct qdio_irq
*irq_ptr
,
1875 unsigned int no_input_qs
,
1876 unsigned int no_output_qs
,
1877 unsigned int min_input_threshold
,
1878 unsigned int max_input_threshold
,
1879 unsigned int min_output_threshold
,
1880 unsigned int max_output_threshold
)
1885 for (i
=0;i
<no_input_qs
;i
++) {
1886 q
=irq_ptr
->input_qs
[i
];
1887 q
->timing
.threshold
=max_input_threshold
;
1888 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1889 q->threshold_classes[j].threshold=
1890 min_input_threshold+
1891 (max_input_threshold-min_input_threshold)/
1894 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1896 for (i
=0;i
<no_output_qs
;i
++) {
1897 q
=irq_ptr
->output_qs
[i
];
1898 q
->timing
.threshold
=max_output_threshold
;
1899 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1900 q->threshold_classes[j].threshold=
1901 min_output_threshold+
1902 (max_output_threshold-min_output_threshold)/
1905 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1910 tiqdio_thinint_handler(void)
1912 QDIO_DBF_TEXT4(0,trace
,"thin_int");
1914 if (qdio_performance_stats
) {
1915 perf_stats
.thinints
++;
1916 perf_stats
.start_time_inbound
=NOW
;
1919 /* SVS only when needed:
1920 * issue SVS to benefit from iqdio interrupt avoidance
1921 * (SVS clears AISOI)*/
1923 tiqdio_clear_global_summary();
1925 tiqdio_inbound_checks();
1930 qdio_set_state(struct qdio_irq
*irq_ptr
, enum qdio_irq_states state
)
1933 #ifdef CONFIG_QDIO_DEBUG
1936 QDIO_DBF_TEXT5(0,trace
,"newstate");
1937 sprintf(dbf_text
,"%4x%4x",irq_ptr
->schid
.sch_no
,state
);
1938 QDIO_DBF_TEXT5(0,trace
,dbf_text
);
1939 #endif /* CONFIG_QDIO_DEBUG */
1941 irq_ptr
->state
=state
;
1942 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
1943 irq_ptr
->input_qs
[i
]->state
=state
;
1944 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
1945 irq_ptr
->output_qs
[i
]->state
=state
;
1950 qdio_irq_check_sense(struct subchannel_id schid
, struct irb
*irb
)
1954 if (irb
->esw
.esw0
.erw
.cons
) {
1955 sprintf(dbf_text
,"sens%4x",schid
.sch_no
);
1956 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
1957 QDIO_DBF_HEX0(0,sense
,irb
,QDIO_DBF_SENSE_LEN
);
1959 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1960 QDIO_HEXDUMP16(WARN
,"irb: ",irb
);
1961 QDIO_HEXDUMP16(WARN
,"sense data: ",irb
->ecw
);
1967 qdio_handle_pci(struct qdio_irq
*irq_ptr
)
1972 if (qdio_performance_stats
) {
1974 perf_stats
.start_time_inbound
=NOW
;
1976 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
1977 q
=irq_ptr
->input_qs
[i
];
1978 if (q
->is_input_q
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
)
1981 if (qdio_performance_stats
)
1982 perf_stats
.tl_runs
--;
1983 __qdio_inbound_processing(q
);
1986 if (!irq_ptr
->hydra_gives_outbound_pcis
)
1988 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1989 q
=irq_ptr
->output_qs
[i
];
1990 if (qdio_is_outbound_q_done(q
))
1992 if (qdio_performance_stats
)
1993 perf_stats
.tl_runs
--;
1994 if (!irq_ptr
->sync_done_on_outb_pcis
)
1996 __qdio_outbound_processing(q
);
2000 static void qdio_establish_handle_irq(struct ccw_device
*, int, int);
2003 qdio_handle_activate_check(struct ccw_device
*cdev
, unsigned long intparm
,
2004 int cstat
, int dstat
)
2006 struct qdio_irq
*irq_ptr
;
2010 irq_ptr
= cdev
->private->qdio_data
;
2012 QDIO_DBF_TEXT2(1, trace
, "ick2");
2013 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2014 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2015 QDIO_DBF_HEX2(0,trace
,&intparm
,sizeof(int));
2016 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2017 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2018 QDIO_PRINT_ERR("received check condition on activate " \
2019 "queues on device %s (cs=x%x, ds=x%x).\n",
2020 cdev
->dev
.bus_id
, cstat
, dstat
);
2021 if (irq_ptr
->no_input_qs
) {
2022 q
=irq_ptr
->input_qs
[0];
2023 } else if (irq_ptr
->no_output_qs
) {
2024 q
=irq_ptr
->output_qs
[0];
2026 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2028 goto omit_handler_call
;
2030 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
2031 QDIO_STATUS_LOOK_FOR_ERROR
,
2032 0,0,0,-1,-1,q
->int_parm
);
2034 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_STOPPED
);
2039 qdio_call_shutdown(struct work_struct
*work
)
2041 struct ccw_device_private
*priv
;
2042 struct ccw_device
*cdev
;
2044 priv
= container_of(work
, struct ccw_device_private
, kick_work
);
2046 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
2047 put_device(&cdev
->dev
);
2051 qdio_timeout_handler(struct ccw_device
*cdev
)
2053 struct qdio_irq
*irq_ptr
;
2056 QDIO_DBF_TEXT2(0, trace
, "qtoh");
2057 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2058 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2060 irq_ptr
= cdev
->private->qdio_data
;
2061 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2062 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2064 switch (irq_ptr
->state
) {
2065 case QDIO_IRQ_STATE_INACTIVE
:
2066 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
2067 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2068 QDIO_DBF_TEXT2(1,setup
,"eq:timeo");
2069 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2071 case QDIO_IRQ_STATE_CLEANUP
:
2072 QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
2074 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2075 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2077 case QDIO_IRQ_STATE_ESTABLISHED
:
2078 case QDIO_IRQ_STATE_ACTIVE
:
2079 /* I/O has been terminated by common I/O layer. */
2080 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2081 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2082 QDIO_DBF_TEXT2(1, trace
, "cio:term");
2083 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_STOPPED
);
2084 if (get_device(&cdev
->dev
)) {
2085 /* Can't call shutdown from interrupt context. */
2086 PREPARE_WORK(&cdev
->private->kick_work
,
2087 qdio_call_shutdown
);
2088 queue_work(ccw_device_work
, &cdev
->private->kick_work
);
2094 ccw_device_set_timeout(cdev
, 0);
2095 wake_up(&cdev
->private->wait_q
);
2099 qdio_handler(struct ccw_device
*cdev
, unsigned long intparm
, struct irb
*irb
)
2101 struct qdio_irq
*irq_ptr
;
2105 #ifdef CONFIG_QDIO_DEBUG
2106 QDIO_DBF_TEXT4(0, trace
, "qint");
2107 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2108 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2109 #endif /* CONFIG_QDIO_DEBUG */
2112 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2113 "handler, device %s\n", cdev
->dev
.bus_id
);
2117 irq_ptr
= cdev
->private->qdio_data
;
2119 QDIO_DBF_TEXT2(1, trace
, "uint");
2120 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2121 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2122 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2128 /* Currently running i/o is in error. */
2129 switch (PTR_ERR(irb
)) {
2131 QDIO_PRINT_ERR("i/o error on device %s\n",
2135 qdio_timeout_handler(cdev
);
2138 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2139 PTR_ERR(irb
), cdev
->dev
.bus_id
);
2144 qdio_irq_check_sense(irq_ptr
->schid
, irb
);
2146 #ifdef CONFIG_QDIO_DEBUG
2147 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2148 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2149 #endif /* CONFIG_QDIO_DEBUG */
2151 cstat
= irb
->scsw
.cstat
;
2152 dstat
= irb
->scsw
.dstat
;
2154 switch (irq_ptr
->state
) {
2155 case QDIO_IRQ_STATE_INACTIVE
:
2156 qdio_establish_handle_irq(cdev
, cstat
, dstat
);
2159 case QDIO_IRQ_STATE_CLEANUP
:
2160 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2163 case QDIO_IRQ_STATE_ESTABLISHED
:
2164 case QDIO_IRQ_STATE_ACTIVE
:
2165 if (cstat
& SCHN_STAT_PCI
) {
2166 qdio_handle_pci(irq_ptr
);
2170 if ((cstat
&~SCHN_STAT_PCI
)||dstat
) {
2171 qdio_handle_activate_check(cdev
, intparm
, cstat
, dstat
);
2175 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2177 irq_ptr
->state
, cdev
->dev
.bus_id
);
2179 wake_up(&cdev
->private->wait_q
);
2184 qdio_synchronize(struct ccw_device
*cdev
, unsigned int flags
,
2185 unsigned int queue_number
)
2189 struct qdio_irq
*irq_ptr
;
2191 #ifdef CONFIG_QDIO_DEBUG
2192 char dbf_text
[15]="SyncXXXX";
2195 irq_ptr
= cdev
->private->qdio_data
;
2199 #ifdef CONFIG_QDIO_DEBUG
2200 *((int*)(&dbf_text
[4])) = irq_ptr
->schid
.sch_no
;
2201 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2202 *((int*)(&dbf_text
[0]))=flags
;
2203 *((int*)(&dbf_text
[4]))=queue_number
;
2204 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2205 #endif /* CONFIG_QDIO_DEBUG */
2207 if (flags
&QDIO_FLAG_SYNC_INPUT
) {
2208 q
=irq_ptr
->input_qs
[queue_number
];
2211 if (!(irq_ptr
->is_qebsm
))
2212 cc
= do_siga_sync(q
->schid
, 0, q
->mask
);
2213 } else if (flags
&QDIO_FLAG_SYNC_OUTPUT
) {
2214 q
=irq_ptr
->output_qs
[queue_number
];
2217 if (!(irq_ptr
->is_qebsm
))
2218 cc
= do_siga_sync(q
->schid
, q
->mask
, 0);
2224 QDIO_DBF_HEX3(0,trace
,&ptr
,sizeof(int));
2230 qdio_check_subchannel_qebsm(struct qdio_irq
*irq_ptr
, unsigned char qdioac
,
2231 unsigned long token
)
2235 unsigned int count
, start_buf
;
2238 /*check if QEBSM is disabled */
2239 if (!(irq_ptr
->is_qebsm
) || !(qdioac
& 0x01)) {
2240 irq_ptr
->is_qebsm
= 0;
2241 irq_ptr
->sch_token
= 0;
2242 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2243 QDIO_DBF_TEXT0(0,setup
,"noV=V");
2246 irq_ptr
->sch_token
= token
;
2248 for (i
= 0; i
< irq_ptr
->no_input_qs
;i
++) {
2249 q
= irq_ptr
->input_qs
[i
];
2250 count
= QDIO_MAX_BUFFERS_PER_Q
;
2252 set_slsb(q
, &start_buf
, SLSB_P_INPUT_NOT_INIT
, &count
);
2254 sprintf(dbf_text
,"V=V:%2x",irq_ptr
->is_qebsm
);
2255 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2256 sprintf(dbf_text
,"%8lx",irq_ptr
->sch_token
);
2257 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2259 for (i
= 0; i
< irq_ptr
->no_output_qs
; i
++) {
2260 q
= irq_ptr
->output_qs
[i
];
2261 count
= QDIO_MAX_BUFFERS_PER_Q
;
2263 set_slsb(q
, &start_buf
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
2268 qdio_get_ssqd_information(struct qdio_irq
*irq_ptr
)
2271 unsigned char qdioac
;
2273 struct chsc_header request
;
2281 struct chsc_header response
;
2300 QDIO_DBF_TEXT0(0,setup
,"getssqd");
2302 ssqd_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2304 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2305 "SIGAs for sch x%x.\n", irq_ptr
->schid
.sch_no
);
2306 irq_ptr
->qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
||
2307 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
||
2308 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2309 irq_ptr
->is_qebsm
= 0;
2310 irq_ptr
->sch_token
= 0;
2311 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2315 ssqd_area
->request
= (struct chsc_header
) {
2319 ssqd_area
->first_sch
= irq_ptr
->schid
.sch_no
;
2320 ssqd_area
->last_sch
= irq_ptr
->schid
.sch_no
;
2321 ssqd_area
->ssid
= irq_ptr
->schid
.ssid
;
2322 result
= chsc(ssqd_area
);
2325 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
2326 "SIGAs for sch 0.%x.%x.\n", result
,
2327 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2328 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
||
2329 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
||
2330 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2331 irq_ptr
->is_qebsm
= 0;
2335 if (ssqd_area
->response
.code
!= QDIO_CHSC_RESPONSE_CODE_OK
) {
2336 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2337 "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n",
2338 ssqd_area
->response
.code
,
2339 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2340 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
||
2341 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
||
2342 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2343 irq_ptr
->is_qebsm
= 0;
2346 if (!(ssqd_area
->flags
& CHSC_FLAG_QDIO_CAPABILITY
) ||
2347 !(ssqd_area
->flags
& CHSC_FLAG_VALIDITY
) ||
2348 (ssqd_area
->sch
!= irq_ptr
->schid
.sch_no
)) {
2349 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2350 "using all SIGAs.\n",
2351 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2352 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2353 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2354 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* worst case */
2355 irq_ptr
->is_qebsm
= 0;
2358 qdioac
= ssqd_area
->qdioac1
;
2360 qdio_check_subchannel_qebsm(irq_ptr
, qdioac
,
2361 ssqd_area
->sch_token
);
2362 mempool_free(ssqd_area
, qdio_mempool_scssc
);
2363 irq_ptr
->qdioac
= qdioac
;
2367 tiqdio_check_chsc_availability(void)
2371 if (!css_characteristics_avail
)
2374 /* Check for bit 41. */
2375 if (!css_general_characteristics
.aif
) {
2376 QDIO_PRINT_WARN("Adapter interruption facility not " \
2381 /* Check for bits 107 and 108. */
2382 if (!css_chsc_characteristics
.scssc
||
2383 !css_chsc_characteristics
.scsscf
) {
2384 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2385 "not available.\n");
2389 /* Check for OSA/FCP thin interrupts (bit 67). */
2390 hydra_thinints
= css_general_characteristics
.aif_osa
;
2391 sprintf(dbf_text
,"hydrati%1x", hydra_thinints
);
2392 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2395 /* Check for QEBSM support in general (bit 58). */
2396 is_passthrough
= css_general_characteristics
.qebsm
;
2398 sprintf(dbf_text
,"cssQBS:%1x", is_passthrough
);
2399 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2401 /* Check for aif time delay disablement fac (bit 56). If installed,
2402 * omit svs even under lpar (good point by rick again) */
2403 omit_svs
= css_general_characteristics
.aif_tdd
;
2404 sprintf(dbf_text
,"omitsvs%1x", omit_svs
);
2405 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2411 tiqdio_set_subchannel_ind(struct qdio_irq
*irq_ptr
, int reset_to_zero
)
2413 unsigned long real_addr_local_summary_bit
;
2414 unsigned long real_addr_dev_st_chg_ind
;
2418 unsigned int resp_code
;
2422 struct chsc_header request
;
2427 u64 summary_indicator_addr
;
2428 u64 subchannel_indicator_addr
;
2433 u32 word_with_d_bit
;
2434 /* set to 0x10000000 to enable
2435 * time delay disablement facility */
2437 struct subchannel_id schid
;
2438 u32 reserved6
[1004];
2439 struct chsc_header response
;
2443 if (!irq_ptr
->is_thinint_irq
)
2446 if (reset_to_zero
) {
2447 real_addr_local_summary_bit
=0;
2448 real_addr_dev_st_chg_ind
=0;
2450 real_addr_local_summary_bit
=
2451 virt_to_phys((volatile void *)indicators
);
2452 real_addr_dev_st_chg_ind
=
2453 virt_to_phys((volatile void *)irq_ptr
->dev_st_chg_ind
);
2456 scssc_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2458 QDIO_PRINT_WARN("No memory for setting indicators on " \
2459 "subchannel 0.%x.%x.\n",
2460 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2463 scssc_area
->request
= (struct chsc_header
) {
2467 scssc_area
->operation_code
= 0;
2469 scssc_area
->summary_indicator_addr
= real_addr_local_summary_bit
;
2470 scssc_area
->subchannel_indicator_addr
= real_addr_dev_st_chg_ind
;
2471 scssc_area
->ks
= QDIO_STORAGE_KEY
;
2472 scssc_area
->kc
= QDIO_STORAGE_KEY
;
2473 scssc_area
->isc
= TIQDIO_THININT_ISC
;
2474 scssc_area
->schid
= irq_ptr
->schid
;
2475 /* enables the time delay disablement facility. Don't care
2476 * whether it is really there (i.e. we haven't checked for
2478 if (css_general_characteristics
.aif_tdd
)
2479 scssc_area
->word_with_d_bit
= 0x10000000;
2481 QDIO_PRINT_WARN("Time delay disablement facility " \
2484 result
= chsc(scssc_area
);
2486 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2488 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,result
);
2493 resp_code
= scssc_area
->response
.code
;
2494 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2495 QDIO_PRINT_WARN("response upon setting indicators " \
2496 "is 0x%x.\n",resp_code
);
2497 sprintf(dbf_text
,"sidR%4x",resp_code
);
2498 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2499 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2500 ptr
=&scssc_area
->response
;
2501 QDIO_DBF_HEX2(1,setup
,&ptr
,QDIO_DBF_SETUP_LEN
);
2506 QDIO_DBF_TEXT2(0,setup
,"setscind");
2507 QDIO_DBF_HEX2(0,setup
,&real_addr_local_summary_bit
,
2508 sizeof(unsigned long));
2509 QDIO_DBF_HEX2(0,setup
,&real_addr_dev_st_chg_ind
,sizeof(unsigned long));
2512 mempool_free(scssc_area
, qdio_mempool_scssc
);
2518 tiqdio_set_delay_target(struct qdio_irq
*irq_ptr
, unsigned long delay_target
)
2520 unsigned int resp_code
;
2526 struct chsc_header request
;
2533 u32 reserved5
[1009];
2534 struct chsc_header response
;
2538 if (!irq_ptr
->is_thinint_irq
)
2541 scsscf_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2543 QDIO_PRINT_WARN("No memory for setting delay target on " \
2544 "subchannel 0.%x.%x.\n",
2545 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2548 scsscf_area
->request
= (struct chsc_header
) {
2553 scsscf_area
->delay_target
= delay_target
<<16;
2555 result
=chsc(scsscf_area
);
2557 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2558 "cc=%i. Continuing.\n",
2559 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2565 resp_code
= scsscf_area
->response
.code
;
2566 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2567 QDIO_PRINT_WARN("response upon setting delay target " \
2568 "is 0x%x. Continuing.\n",resp_code
);
2569 sprintf(dbf_text
,"sdtR%4x",resp_code
);
2570 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2571 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2572 ptr
=&scsscf_area
->response
;
2573 QDIO_DBF_HEX2(1,trace
,&ptr
,QDIO_DBF_TRACE_LEN
);
2575 QDIO_DBF_TEXT2(0,trace
,"delytrgt");
2576 QDIO_DBF_HEX2(0,trace
,&delay_target
,sizeof(unsigned long));
2577 result
= 0; /* not critical */
2579 mempool_free(scsscf_area
, qdio_mempool_scssc
);
2584 qdio_cleanup(struct ccw_device
*cdev
, int how
)
2586 struct qdio_irq
*irq_ptr
;
2590 irq_ptr
= cdev
->private->qdio_data
;
2594 sprintf(dbf_text
,"qcln%4x",irq_ptr
->schid
.sch_no
);
2595 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2596 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2598 rc
= qdio_shutdown(cdev
, how
);
2599 if ((rc
== 0) || (rc
== -EINPROGRESS
))
2600 rc
= qdio_free(cdev
);
2605 qdio_shutdown(struct ccw_device
*cdev
, int how
)
2607 struct qdio_irq
*irq_ptr
;
2611 unsigned long flags
;
2615 irq_ptr
= cdev
->private->qdio_data
;
2619 down(&irq_ptr
->setting_up_sema
);
2621 sprintf(dbf_text
,"qsqs%4x",irq_ptr
->schid
.sch_no
);
2622 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2623 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2625 /* mark all qs as uninteresting */
2626 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
2627 atomic_set(&irq_ptr
->input_qs
[i
]->is_in_shutdown
,1);
2629 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
2630 atomic_set(&irq_ptr
->output_qs
[i
]->is_in_shutdown
,1);
2632 tasklet_kill(&tiqdio_tasklet
);
2634 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2635 qdio_unmark_q(irq_ptr
->input_qs
[i
]);
2636 tasklet_kill(&irq_ptr
->input_qs
[i
]->tasklet
);
2637 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2638 !atomic_read(&irq_ptr
->
2641 QDIO_NO_USE_COUNT_TIMEOUT
);
2642 if (atomic_read(&irq_ptr
->input_qs
[i
]->use_count
))
2643 result
=-EINPROGRESS
;
2646 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2647 tasklet_kill(&irq_ptr
->output_qs
[i
]->tasklet
);
2648 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2649 !atomic_read(&irq_ptr
->
2652 QDIO_NO_USE_COUNT_TIMEOUT
);
2653 if (atomic_read(&irq_ptr
->output_qs
[i
]->use_count
))
2654 result
=-EINPROGRESS
;
2657 /* cleanup subchannel */
2658 spin_lock_irqsave(get_ccwdev_lock(cdev
),flags
);
2659 if (how
&QDIO_FLAG_CLEANUP_USING_CLEAR
) {
2660 rc
= ccw_device_clear(cdev
, QDIO_DOING_CLEANUP
);
2661 timeout
=QDIO_CLEANUP_CLEAR_TIMEOUT
;
2662 } else if (how
&QDIO_FLAG_CLEANUP_USING_HALT
) {
2663 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2664 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2665 } else { /* default behaviour */
2666 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2667 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2669 if (rc
== -ENODEV
) {
2670 /* No need to wait for device no longer present. */
2671 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2672 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2673 } else if (((void *)cdev
->handler
!= (void *)qdio_handler
) && rc
== 0) {
2675 * Whoever put another handler there, has to cope with the
2676 * interrupt theirself. Might happen if qdio_shutdown was
2677 * called on already shutdown queues, but this shouldn't have
2680 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2681 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2682 } else if (rc
== 0) {
2683 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_CLEANUP
);
2684 ccw_device_set_timeout(cdev
, timeout
);
2685 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),flags
);
2687 wait_event(cdev
->private->wait_q
,
2688 irq_ptr
->state
== QDIO_IRQ_STATE_INACTIVE
||
2689 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
2691 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2692 "device %s\n", result
, cdev
->dev
.bus_id
);
2693 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2697 if (irq_ptr
->is_thinint_irq
) {
2698 qdio_put_indicator((__u32
*)irq_ptr
->dev_st_chg_ind
);
2699 tiqdio_set_subchannel_ind(irq_ptr
,1);
2700 /* reset adapter interrupt indicators */
2703 /* exchange int handlers, if necessary */
2704 if ((void*)cdev
->handler
== (void*)qdio_handler
)
2705 cdev
->handler
=irq_ptr
->original_int_handler
;
2707 /* Ignore errors. */
2708 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2709 ccw_device_set_timeout(cdev
, 0);
2711 up(&irq_ptr
->setting_up_sema
);
2716 qdio_free(struct ccw_device
*cdev
)
2718 struct qdio_irq
*irq_ptr
;
2721 irq_ptr
= cdev
->private->qdio_data
;
2725 down(&irq_ptr
->setting_up_sema
);
2727 sprintf(dbf_text
,"qfqs%4x",irq_ptr
->schid
.sch_no
);
2728 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2729 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2731 cdev
->private->qdio_data
= NULL
;
2733 up(&irq_ptr
->setting_up_sema
);
2735 qdio_release_irq_memory(irq_ptr
);
2736 module_put(THIS_MODULE
);
2741 qdio_allocate_do_dbf(struct qdio_initialize
*init_data
)
2743 char dbf_text
[20]; /* if a printf printed out more than 8 chars */
2745 sprintf(dbf_text
,"qfmt:%x",init_data
->q_format
);
2746 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2747 QDIO_DBF_HEX0(0,setup
,init_data
->adapter_name
,8);
2748 sprintf(dbf_text
,"qpff%4x",init_data
->qib_param_field_format
);
2749 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2750 QDIO_DBF_HEX0(0,setup
,&init_data
->qib_param_field
,sizeof(char*));
2751 QDIO_DBF_HEX0(0,setup
,&init_data
->input_slib_elements
,sizeof(long*));
2752 QDIO_DBF_HEX0(0,setup
,&init_data
->output_slib_elements
,sizeof(long*));
2753 sprintf(dbf_text
,"miit%4x",init_data
->min_input_threshold
);
2754 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2755 sprintf(dbf_text
,"mait%4x",init_data
->max_input_threshold
);
2756 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2757 sprintf(dbf_text
,"miot%4x",init_data
->min_output_threshold
);
2758 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2759 sprintf(dbf_text
,"maot%4x",init_data
->max_output_threshold
);
2760 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2761 sprintf(dbf_text
,"niq:%4x",init_data
->no_input_qs
);
2762 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2763 sprintf(dbf_text
,"noq:%4x",init_data
->no_output_qs
);
2764 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2765 QDIO_DBF_HEX0(0,setup
,&init_data
->input_handler
,sizeof(void*));
2766 QDIO_DBF_HEX0(0,setup
,&init_data
->output_handler
,sizeof(void*));
2767 QDIO_DBF_HEX0(0,setup
,&init_data
->int_parm
,sizeof(long));
2768 QDIO_DBF_HEX0(0,setup
,&init_data
->flags
,sizeof(long));
2769 QDIO_DBF_HEX0(0,setup
,&init_data
->input_sbal_addr_array
,sizeof(void*));
2770 QDIO_DBF_HEX0(0,setup
,&init_data
->output_sbal_addr_array
,sizeof(void*));
2774 qdio_allocate_fill_input_desc(struct qdio_irq
*irq_ptr
, int i
, int iqfmt
)
2776 irq_ptr
->input_qs
[i
]->is_iqdio_q
= iqfmt
;
2777 irq_ptr
->input_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2779 irq_ptr
->qdr
->qdf0
[i
].sliba
=(unsigned long)(irq_ptr
->input_qs
[i
]->slib
);
2781 irq_ptr
->qdr
->qdf0
[i
].sla
=(unsigned long)(irq_ptr
->input_qs
[i
]->sl
);
2783 irq_ptr
->qdr
->qdf0
[i
].slsba
=
2784 (unsigned long)(&irq_ptr
->input_qs
[i
]->slsb
.acc
.val
[0]);
2786 irq_ptr
->qdr
->qdf0
[i
].akey
=QDIO_STORAGE_KEY
;
2787 irq_ptr
->qdr
->qdf0
[i
].bkey
=QDIO_STORAGE_KEY
;
2788 irq_ptr
->qdr
->qdf0
[i
].ckey
=QDIO_STORAGE_KEY
;
2789 irq_ptr
->qdr
->qdf0
[i
].dkey
=QDIO_STORAGE_KEY
;
2793 qdio_allocate_fill_output_desc(struct qdio_irq
*irq_ptr
, int i
,
2796 irq_ptr
->output_qs
[i
]->is_iqdio_q
= iqfmt
;
2797 irq_ptr
->output_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2799 irq_ptr
->qdr
->qdf0
[i
+j
].sliba
=(unsigned long)(irq_ptr
->output_qs
[i
]->slib
);
2801 irq_ptr
->qdr
->qdf0
[i
+j
].sla
=(unsigned long)(irq_ptr
->output_qs
[i
]->sl
);
2803 irq_ptr
->qdr
->qdf0
[i
+j
].slsba
=
2804 (unsigned long)(&irq_ptr
->output_qs
[i
]->slsb
.acc
.val
[0]);
2806 irq_ptr
->qdr
->qdf0
[i
+j
].akey
=QDIO_STORAGE_KEY
;
2807 irq_ptr
->qdr
->qdf0
[i
+j
].bkey
=QDIO_STORAGE_KEY
;
2808 irq_ptr
->qdr
->qdf0
[i
+j
].ckey
=QDIO_STORAGE_KEY
;
2809 irq_ptr
->qdr
->qdf0
[i
+j
].dkey
=QDIO_STORAGE_KEY
;
2814 qdio_initialize_set_siga_flags_input(struct qdio_irq
*irq_ptr
)
2818 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2819 irq_ptr
->input_qs
[i
]->siga_sync
=
2820 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2821 irq_ptr
->input_qs
[i
]->siga_in
=
2822 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2823 irq_ptr
->input_qs
[i
]->siga_out
=
2824 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2825 irq_ptr
->input_qs
[i
]->siga_sync_done_on_thinints
=
2826 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2827 irq_ptr
->input_qs
[i
]->hydra_gives_outbound_pcis
=
2828 irq_ptr
->hydra_gives_outbound_pcis
;
2829 irq_ptr
->input_qs
[i
]->siga_sync_done_on_outb_tis
=
2831 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2832 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2833 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2834 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2840 qdio_initialize_set_siga_flags_output(struct qdio_irq
*irq_ptr
)
2844 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2845 irq_ptr
->output_qs
[i
]->siga_sync
=
2846 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2847 irq_ptr
->output_qs
[i
]->siga_in
=
2848 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2849 irq_ptr
->output_qs
[i
]->siga_out
=
2850 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2851 irq_ptr
->output_qs
[i
]->siga_sync_done_on_thinints
=
2852 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2853 irq_ptr
->output_qs
[i
]->hydra_gives_outbound_pcis
=
2854 irq_ptr
->hydra_gives_outbound_pcis
;
2855 irq_ptr
->output_qs
[i
]->siga_sync_done_on_outb_tis
=
2857 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2858 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2859 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2860 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2866 qdio_establish_irq_check_for_errors(struct ccw_device
*cdev
, int cstat
,
2870 struct qdio_irq
*irq_ptr
;
2872 irq_ptr
= cdev
->private->qdio_data
;
2874 if (cstat
|| (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
))) {
2875 sprintf(dbf_text
,"ick1%4x",irq_ptr
->schid
.sch_no
);
2876 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2877 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2878 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2879 QDIO_PRINT_ERR("received check condition on establish " \
2880 "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2881 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2883 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ERR
);
2886 if (!(dstat
& DEV_STAT_DEV_END
)) {
2887 QDIO_DBF_TEXT2(1,setup
,"eq:no de");
2888 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2889 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2890 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
2891 "device end: dstat=%02x, cstat=%02x\n",
2892 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2894 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2898 if (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
)) {
2899 QDIO_DBF_TEXT2(1,setup
,"eq:badio");
2900 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2901 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2902 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
2903 "the following devstat: dstat=%02x, "
2904 "cstat=%02x\n", irq_ptr
->schid
.ssid
,
2905 irq_ptr
->schid
.sch_no
, dstat
, cstat
);
2906 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2913 qdio_establish_handle_irq(struct ccw_device
*cdev
, int cstat
, int dstat
)
2915 struct qdio_irq
*irq_ptr
;
2918 irq_ptr
= cdev
->private->qdio_data
;
2920 sprintf(dbf_text
,"qehi%4x",cdev
->private->schid
.sch_no
);
2921 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2922 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2924 if (qdio_establish_irq_check_for_errors(cdev
, cstat
, dstat
)) {
2925 ccw_device_set_timeout(cdev
, 0);
2929 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ESTABLISHED
);
2930 ccw_device_set_timeout(cdev
, 0);
2934 qdio_initialize(struct qdio_initialize
*init_data
)
2939 sprintf(dbf_text
,"qini%4x",init_data
->cdev
->private->schid
.sch_no
);
2940 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2941 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2943 rc
= qdio_allocate(init_data
);
2945 rc
= qdio_establish(init_data
);
2947 qdio_free(init_data
->cdev
);
2955 qdio_allocate(struct qdio_initialize
*init_data
)
2957 struct qdio_irq
*irq_ptr
;
2960 sprintf(dbf_text
,"qalc%4x",init_data
->cdev
->private->schid
.sch_no
);
2961 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2962 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2963 if ( (init_data
->no_input_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2964 (init_data
->no_output_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2965 ((init_data
->no_input_qs
) && (!init_data
->input_handler
)) ||
2966 ((init_data
->no_output_qs
) && (!init_data
->output_handler
)) )
2969 if (!init_data
->input_sbal_addr_array
)
2972 if (!init_data
->output_sbal_addr_array
)
2975 qdio_allocate_do_dbf(init_data
);
2978 irq_ptr
= (void *) get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
2980 QDIO_DBF_TEXT0(0,setup
,"irq_ptr:");
2981 QDIO_DBF_HEX0(0,setup
,&irq_ptr
,sizeof(void*));
2984 QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n");
2988 init_MUTEX(&irq_ptr
->setting_up_sema
);
2990 /* QDR must be in DMA area since CCW data address is only 32 bit */
2991 irq_ptr
->qdr
=kmalloc(sizeof(struct qdr
), GFP_KERNEL
| GFP_DMA
);
2992 if (!(irq_ptr
->qdr
)) {
2993 free_page((unsigned long) irq_ptr
);
2994 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
2997 QDIO_DBF_TEXT0(0,setup
,"qdr:");
2998 QDIO_DBF_HEX0(0,setup
,&irq_ptr
->qdr
,sizeof(void*));
3000 if (qdio_alloc_qs(irq_ptr
,
3001 init_data
->no_input_qs
,
3002 init_data
->no_output_qs
)) {
3003 qdio_release_irq_memory(irq_ptr
);
3007 init_data
->cdev
->private->qdio_data
= irq_ptr
;
3009 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_INACTIVE
);
3014 int qdio_fill_irq(struct qdio_initialize
*init_data
)
3020 struct qdio_irq
*irq_ptr
;
3022 irq_ptr
= init_data
->cdev
->private->qdio_data
;
3024 memset(irq_ptr
,0,((char*)&irq_ptr
->qdr
)-((char*)irq_ptr
));
3026 /* wipes qib.ac, required by ar7063 */
3027 memset(irq_ptr
->qdr
,0,sizeof(struct qdr
));
3029 irq_ptr
->int_parm
=init_data
->int_parm
;
3031 irq_ptr
->schid
= ccw_device_get_subchannel_id(init_data
->cdev
);
3032 irq_ptr
->no_input_qs
=init_data
->no_input_qs
;
3033 irq_ptr
->no_output_qs
=init_data
->no_output_qs
;
3035 if (init_data
->q_format
==QDIO_IQDIO_QFMT
) {
3036 irq_ptr
->is_iqdio_irq
=1;
3037 irq_ptr
->is_thinint_irq
=1;
3039 irq_ptr
->is_iqdio_irq
=0;
3040 irq_ptr
->is_thinint_irq
=hydra_thinints
;
3042 sprintf(dbf_text
,"is_i_t%1x%1x",
3043 irq_ptr
->is_iqdio_irq
,irq_ptr
->is_thinint_irq
);
3044 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3046 if (irq_ptr
->is_thinint_irq
) {
3047 irq_ptr
->dev_st_chg_ind
= qdio_get_indicator();
3048 QDIO_DBF_HEX1(0,setup
,&irq_ptr
->dev_st_chg_ind
,sizeof(void*));
3049 if (!irq_ptr
->dev_st_chg_ind
) {
3050 QDIO_PRINT_WARN("no indicator location available " \
3051 "for irq 0.%x.%x\n",
3052 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
3053 qdio_release_irq_memory(irq_ptr
);
3059 irq_ptr
->equeue
.cmd
=DEFAULT_ESTABLISH_QS_CMD
;
3060 irq_ptr
->equeue
.count
=DEFAULT_ESTABLISH_QS_COUNT
;
3061 irq_ptr
->aqueue
.cmd
=DEFAULT_ACTIVATE_QS_CMD
;
3062 irq_ptr
->aqueue
.count
=DEFAULT_ACTIVATE_QS_COUNT
;
3064 qdio_fill_qs(irq_ptr
, init_data
->cdev
,
3065 init_data
->no_input_qs
,
3066 init_data
->no_output_qs
,
3067 init_data
->input_handler
,
3068 init_data
->output_handler
,init_data
->int_parm
,
3069 init_data
->q_format
,init_data
->flags
,
3070 init_data
->input_sbal_addr_array
,
3071 init_data
->output_sbal_addr_array
);
3073 if (!try_module_get(THIS_MODULE
)) {
3074 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3075 qdio_release_irq_memory(irq_ptr
);
3079 qdio_fill_thresholds(irq_ptr
,init_data
->no_input_qs
,
3080 init_data
->no_output_qs
,
3081 init_data
->min_input_threshold
,
3082 init_data
->max_input_threshold
,
3083 init_data
->min_output_threshold
,
3084 init_data
->max_output_threshold
);
3087 irq_ptr
->qdr
->qfmt
=init_data
->q_format
;
3088 irq_ptr
->qdr
->iqdcnt
=init_data
->no_input_qs
;
3089 irq_ptr
->qdr
->oqdcnt
=init_data
->no_output_qs
;
3090 irq_ptr
->qdr
->iqdsz
=sizeof(struct qdesfmt0
)/4; /* size in words */
3091 irq_ptr
->qdr
->oqdsz
=sizeof(struct qdesfmt0
)/4;
3093 irq_ptr
->qdr
->qiba
=(unsigned long)&irq_ptr
->qib
;
3094 irq_ptr
->qdr
->qkey
=QDIO_STORAGE_KEY
;
3097 irq_ptr
->is_qebsm
= is_passthrough
;
3098 if (irq_ptr
->is_qebsm
)
3099 irq_ptr
->qib
.rflags
|= QIB_RFLAGS_ENABLE_QEBSM
;
3101 irq_ptr
->qib
.qfmt
=init_data
->q_format
;
3102 if (init_data
->no_input_qs
)
3103 irq_ptr
->qib
.isliba
=(unsigned long)(irq_ptr
->input_qs
[0]->slib
);
3104 if (init_data
->no_output_qs
)
3105 irq_ptr
->qib
.osliba
=(unsigned long)(irq_ptr
->output_qs
[0]->slib
);
3106 memcpy(irq_ptr
->qib
.ebcnam
,init_data
->adapter_name
,8);
3108 qdio_set_impl_params(irq_ptr
,init_data
->qib_param_field_format
,
3109 init_data
->qib_param_field
,
3110 init_data
->no_input_qs
,
3111 init_data
->no_output_qs
,
3112 init_data
->input_slib_elements
,
3113 init_data
->output_slib_elements
);
3115 /* first input descriptors, then output descriptors */
3116 is_iqdio
= (init_data
->q_format
== QDIO_IQDIO_QFMT
) ? 1 : 0;
3117 for (i
=0;i
<init_data
->no_input_qs
;i
++)
3118 qdio_allocate_fill_input_desc(irq_ptr
, i
, is_iqdio
);
3120 for (i
=0;i
<init_data
->no_output_qs
;i
++)
3121 qdio_allocate_fill_output_desc(irq_ptr
, i
,
3122 init_data
->no_input_qs
,
3125 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3127 /* get qdio commands */
3128 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_EQUEUE
);
3130 QDIO_DBF_TEXT2(1,setup
,"no eq");
3131 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3132 "Trying to use default.\n");
3134 irq_ptr
->equeue
= *ciw
;
3135 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_AQUEUE
);
3137 QDIO_DBF_TEXT2(1,setup
,"no aq");
3138 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3139 "Trying to use default.\n");
3141 irq_ptr
->aqueue
= *ciw
;
3143 /* Set new interrupt handler. */
3144 irq_ptr
->original_int_handler
= init_data
->cdev
->handler
;
3145 init_data
->cdev
->handler
= qdio_handler
;
3151 qdio_establish(struct qdio_initialize
*init_data
)
3153 struct qdio_irq
*irq_ptr
;
3154 unsigned long saveflags
;
3155 int result
, result2
;
3156 struct ccw_device
*cdev
;
3159 cdev
=init_data
->cdev
;
3160 irq_ptr
= cdev
->private->qdio_data
;
3164 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3167 down(&irq_ptr
->setting_up_sema
);
3169 qdio_fill_irq(init_data
);
3171 /* the thinint CHSC stuff */
3172 if (irq_ptr
->is_thinint_irq
) {
3174 result
= tiqdio_set_subchannel_ind(irq_ptr
,0);
3176 up(&irq_ptr
->setting_up_sema
);
3177 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3180 tiqdio_set_delay_target(irq_ptr
,TIQDIO_DELAY_TARGET
);
3183 sprintf(dbf_text
,"qest%4x",cdev
->private->schid
.sch_no
);
3184 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3185 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
3188 irq_ptr
->ccw
.cmd_code
=irq_ptr
->equeue
.cmd
;
3189 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3190 irq_ptr
->ccw
.count
=irq_ptr
->equeue
.count
;
3191 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(irq_ptr
->qdr
);
3193 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3195 ccw_device_set_options(cdev
, 0);
3196 result
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3197 QDIO_DOING_ESTABLISH
,0, 0,
3198 QDIO_ESTABLISH_TIMEOUT
);
3200 result2
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3201 QDIO_DOING_ESTABLISH
,0,0,
3202 QDIO_ESTABLISH_TIMEOUT
);
3203 sprintf(dbf_text
,"eq:io%4x",result
);
3204 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3206 sprintf(dbf_text
,"eq:io%4x",result
);
3207 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3209 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3210 "returned %i, next try returned %i\n",
3211 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3215 ccw_device_set_timeout(cdev
, 0);
3218 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3221 up(&irq_ptr
->setting_up_sema
);
3222 qdio_shutdown(cdev
,QDIO_FLAG_CLEANUP_USING_CLEAR
);
3226 /* Timeout is cared for already by using ccw_device_start_timeout(). */
3227 wait_event_interruptible(cdev
->private->wait_q
,
3228 irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
||
3229 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
3231 if (irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
)
3234 up(&irq_ptr
->setting_up_sema
);
3235 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3239 qdio_get_ssqd_information(irq_ptr
);
3240 /* if this gets set once, we're running under VM and can omit SVSes */
3241 if (irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
)
3244 sprintf(dbf_text
,"qdioac%2x",irq_ptr
->qdioac
);
3245 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3247 sprintf(dbf_text
,"qib ac%2x",irq_ptr
->qib
.ac
);
3248 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3250 irq_ptr
->hydra_gives_outbound_pcis
=
3251 irq_ptr
->qib
.ac
&QIB_AC_OUTBOUND_PCI_SUPPORTED
;
3252 irq_ptr
->sync_done_on_outb_pcis
=
3253 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
;
3255 qdio_initialize_set_siga_flags_input(irq_ptr
);
3256 qdio_initialize_set_siga_flags_output(irq_ptr
);
3258 up(&irq_ptr
->setting_up_sema
);
3265 qdio_activate(struct ccw_device
*cdev
, int flags
)
3267 struct qdio_irq
*irq_ptr
;
3268 int i
,result
=0,result2
;
3269 unsigned long saveflags
;
3270 char dbf_text
[20]; /* see qdio_initialize */
3272 irq_ptr
= cdev
->private->qdio_data
;
3276 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3279 down(&irq_ptr
->setting_up_sema
);
3280 if (irq_ptr
->state
==QDIO_IRQ_STATE_INACTIVE
) {
3285 sprintf(dbf_text
,"qact%4x", irq_ptr
->schid
.sch_no
);
3286 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3287 QDIO_DBF_TEXT2(0,trace
,dbf_text
);
3290 irq_ptr
->ccw
.cmd_code
=irq_ptr
->aqueue
.cmd
;
3291 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3292 irq_ptr
->ccw
.count
=irq_ptr
->aqueue
.count
;
3293 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(0);
3295 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3297 ccw_device_set_timeout(cdev
, 0);
3298 ccw_device_set_options(cdev
, CCWDEV_REPORT_ALL
);
3299 result
=ccw_device_start(cdev
,&irq_ptr
->ccw
,QDIO_DOING_ACTIVATE
,
3300 0, DOIO_DENY_PREFETCH
);
3302 result2
=ccw_device_start(cdev
,&irq_ptr
->ccw
,
3303 QDIO_DOING_ACTIVATE
,0,0);
3304 sprintf(dbf_text
,"aq:io%4x",result
);
3305 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3307 sprintf(dbf_text
,"aq:io%4x",result
);
3308 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3310 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3311 "returned %i, next try returned %i\n",
3312 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3317 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3321 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3322 if (irq_ptr
->is_thinint_irq
) {
3324 * that way we know, that, if we will get interrupted
3325 * by tiqdio_inbound_processing, qdio_unmark_q will
3328 qdio_reserve_q(irq_ptr
->input_qs
[i
]);
3329 qdio_mark_tiq(irq_ptr
->input_qs
[i
]);
3330 qdio_release_q(irq_ptr
->input_qs
[i
]);
3334 if (flags
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
) {
3335 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3336 irq_ptr
->input_qs
[i
]->is_input_q
|=
3337 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
;
3341 wait_event_interruptible_timeout(cdev
->private->wait_q
,
3343 QDIO_IRQ_STATE_STOPPED
) ||
3345 QDIO_IRQ_STATE_ERR
)),
3346 QDIO_ACTIVATE_TIMEOUT
);
3348 switch (irq_ptr
->state
) {
3349 case QDIO_IRQ_STATE_STOPPED
:
3350 case QDIO_IRQ_STATE_ERR
:
3351 up(&irq_ptr
->setting_up_sema
);
3352 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3353 down(&irq_ptr
->setting_up_sema
);
3357 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ACTIVE
);
3361 up(&irq_ptr
->setting_up_sema
);
3366 /* buffers filled forwards again to make Rick happy */
3368 qdio_do_qdio_fill_input(struct qdio_q
*q
, unsigned int qidx
,
3369 unsigned int count
, struct qdio_buffer
*buffers
)
3371 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3372 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3373 if (irq
->is_qebsm
) {
3375 set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3379 set_slsb(q
, &qidx
, SLSB_CU_INPUT_EMPTY
, &count
);
3382 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3387 qdio_do_qdio_fill_output(struct qdio_q
*q
, unsigned int qidx
,
3388 unsigned int count
, struct qdio_buffer
*buffers
)
3390 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3392 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3393 if (irq
->is_qebsm
) {
3395 set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3400 set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3403 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3408 do_qdio_handle_inbound(struct qdio_q
*q
, unsigned int callflags
,
3409 unsigned int qidx
, unsigned int count
,
3410 struct qdio_buffer
*buffers
)
3414 /* This is the inbound handling of queues */
3415 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3417 qdio_do_qdio_fill_input(q
,qidx
,count
,buffers
);
3419 if ((used_elements
+count
==QDIO_MAX_BUFFERS_PER_Q
)&&
3420 (callflags
&QDIO_FLAG_UNDER_INTERRUPT
))
3421 atomic_xchg(&q
->polling
,0);
3425 if (callflags
&QDIO_FLAG_DONT_SIGA
)
3430 result
=qdio_siga_input(q
);
3433 q
->error_status_flags
|=
3434 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
3435 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
3436 q
->siga_error
=result
;
3444 do_qdio_handle_outbound(struct qdio_q
*q
, unsigned int callflags
,
3445 unsigned int qidx
, unsigned int count
,
3446 struct qdio_buffer
*buffers
)
3449 unsigned int cnt
, start_buf
;
3450 unsigned char state
= 0;
3451 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3453 /* This is the outbound handling of queues */
3454 if (qdio_performance_stats
)
3455 perf_stats
.start_time_outbound
=NOW
;
3457 qdio_do_qdio_fill_output(q
,qidx
,count
,buffers
);
3459 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3461 if (callflags
&QDIO_FLAG_DONT_SIGA
) {
3462 if (qdio_performance_stats
) {
3463 perf_stats
.outbound_time
+=NOW
-perf_stats
.start_time_outbound
;
3464 perf_stats
.outbound_cnt
++;
3468 if (q
->is_iqdio_q
) {
3469 /* one siga for every sbal */
3471 qdio_kick_outbound_q(q
);
3473 __qdio_outbound_processing(q
);
3475 /* under VM, we do a SIGA sync unconditionally */
3479 * w/o shadow queues (else branch of
3480 * SYNC_MEMORY :-/ ), we try to
3481 * fast-requeue buffers
3483 if (irq
->is_qebsm
) {
3485 start_buf
= ((qidx
+QDIO_MAX_BUFFERS_PER_Q
-1) &
3486 (QDIO_MAX_BUFFERS_PER_Q
-1));
3487 qdio_do_eqbs(q
, &state
, &start_buf
, &cnt
);
3489 state
= q
->slsb
.acc
.val
[(qidx
+QDIO_MAX_BUFFERS_PER_Q
-1)
3490 &(QDIO_MAX_BUFFERS_PER_Q
-1) ];
3491 if (state
!= SLSB_CU_OUTPUT_PRIMED
) {
3492 qdio_kick_outbound_q(q
);
3494 QDIO_DBF_TEXT3(0,trace
, "fast-req");
3495 if (qdio_performance_stats
)
3496 perf_stats
.fast_reqs
++;
3500 * only marking the q could take too long,
3501 * the upper layer module could do a lot of
3502 * traffic in that time
3504 __qdio_outbound_processing(q
);
3507 if (qdio_performance_stats
) {
3508 perf_stats
.outbound_time
+=NOW
-perf_stats
.start_time_outbound
;
3509 perf_stats
.outbound_cnt
++;
3513 /* count must be 1 in iqdio */
3515 do_QDIO(struct ccw_device
*cdev
,unsigned int callflags
,
3516 unsigned int queue_number
, unsigned int qidx
,
3517 unsigned int count
,struct qdio_buffer
*buffers
)
3519 struct qdio_irq
*irq_ptr
;
3520 #ifdef CONFIG_QDIO_DEBUG
3523 sprintf(dbf_text
,"doQD%04x",cdev
->private->schid
.sch_no
);
3524 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3525 #endif /* CONFIG_QDIO_DEBUG */
3527 if ( (qidx
>QDIO_MAX_BUFFERS_PER_Q
) ||
3528 (count
>QDIO_MAX_BUFFERS_PER_Q
) ||
3529 (queue_number
>QDIO_MAX_QUEUES_PER_IRQ
) )
3535 irq_ptr
= cdev
->private->qdio_data
;
3539 #ifdef CONFIG_QDIO_DEBUG
3540 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3541 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->input_qs
[queue_number
],
3544 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->output_qs
[queue_number
],
3546 sprintf(dbf_text
,"flag%04x",callflags
);
3547 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3548 sprintf(dbf_text
,"qi%02xct%02x",qidx
,count
);
3549 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3550 #endif /* CONFIG_QDIO_DEBUG */
3552 if (irq_ptr
->state
!=QDIO_IRQ_STATE_ACTIVE
)
3555 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3556 do_qdio_handle_inbound(irq_ptr
->input_qs
[queue_number
],
3557 callflags
, qidx
, count
, buffers
);
3558 else if (callflags
&QDIO_FLAG_SYNC_OUTPUT
)
3559 do_qdio_handle_outbound(irq_ptr
->output_qs
[queue_number
],
3560 callflags
, qidx
, count
, buffers
);
3562 QDIO_DBF_TEXT3(1,trace
,"doQD:inv");
3569 qdio_perf_procfile_read(char *buffer
, char **buffer_location
, off_t offset
,
3570 int buffer_length
, int *eof
, void *data
)
3574 /* we are always called with buffer_length=4k, so we all
3575 deliver on the first read */
3579 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3580 _OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc
,i_p_c
);
3581 _OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc
,ii_p_c
);
3582 _OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc
,o_p_c
);
3583 _OUTP_IT("Number of tasklet runs (total) : %lu\n",
3584 perf_stats
.tl_runs
);
3586 _OUTP_IT("Number of SIGA sync's issued : %lu\n",
3587 perf_stats
.siga_syncs
);
3588 _OUTP_IT("Number of SIGA in's issued : %lu\n",
3589 perf_stats
.siga_ins
);
3590 _OUTP_IT("Number of SIGA out's issued : %lu\n",
3591 perf_stats
.siga_outs
);
3592 _OUTP_IT("Number of PCIs caught : %lu\n",
3594 _OUTP_IT("Number of adapter interrupts caught : %lu\n",
3595 perf_stats
.thinints
);
3596 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %lu\n",
3597 perf_stats
.fast_reqs
);
3599 _OUTP_IT("Total time of all inbound actions (us) incl. UL : %lu\n",
3600 perf_stats
.inbound_time
);
3601 _OUTP_IT("Number of inbound transfers : %lu\n",
3602 perf_stats
.inbound_cnt
);
3603 _OUTP_IT("Total time of all outbound do_QDIOs (us) : %lu\n",
3604 perf_stats
.outbound_time
);
3605 _OUTP_IT("Number of do_QDIOs outbound : %lu\n",
3606 perf_stats
.outbound_cnt
);
3612 static struct proc_dir_entry
*qdio_perf_proc_file
;
3615 qdio_add_procfs_entry(void)
3617 proc_perf_file_registration
=0;
3618 qdio_perf_proc_file
=create_proc_entry(QDIO_PERF
,
3619 S_IFREG
|0444,&proc_root
);
3620 if (qdio_perf_proc_file
) {
3621 qdio_perf_proc_file
->read_proc
=&qdio_perf_procfile_read
;
3622 } else proc_perf_file_registration
=-1;
3624 if (proc_perf_file_registration
)
3625 QDIO_PRINT_WARN("was not able to register perf. " \
3626 "proc-file (%i).\n",
3627 proc_perf_file_registration
);
3631 qdio_remove_procfs_entry(void)
3633 perf_stats
.tl_runs
=0;
3635 if (!proc_perf_file_registration
) /* means if it went ok earlier */
3636 remove_proc_entry(QDIO_PERF
,&proc_root
);
3640 * attributes in sysfs
3641 *****************************************************************************/
3644 qdio_performance_stats_show(struct bus_type
*bus
, char *buf
)
3646 return sprintf(buf
, "%i\n", qdio_performance_stats
? 1 : 0);
3650 qdio_performance_stats_store(struct bus_type
*bus
, const char *buf
, size_t count
)
3655 i
= simple_strtoul(buf
, &tmp
, 16);
3656 if ((i
== 0) || (i
== 1)) {
3657 if (i
== qdio_performance_stats
)
3659 qdio_performance_stats
= i
;
3661 /* reset perf. stat. info */
3668 memset(&perf_stats
, 0, sizeof(struct qdio_perf_stats
));
3671 QDIO_PRINT_WARN("QDIO performance_stats: write 0 or 1 to this file!\n");
3677 static BUS_ATTR(qdio_performance_stats
, 0644, qdio_performance_stats_show
,
3678 qdio_performance_stats_store
);
3681 tiqdio_register_thinints(void)
3684 register_thinint_result
=
3685 s390_register_adapter_interrupt(&tiqdio_thinint_handler
);
3686 if (register_thinint_result
) {
3687 sprintf(dbf_text
,"regthn%x",(register_thinint_result
&0xff));
3688 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3689 QDIO_PRINT_ERR("failed to register adapter handler " \
3690 "(rc=%i).\nAdapter interrupts might " \
3691 "not work. Continuing.\n",
3692 register_thinint_result
);
3697 tiqdio_unregister_thinints(void)
3699 if (!register_thinint_result
)
3700 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler
);
3704 qdio_get_qdio_memory(void)
3707 indicator_used
[0]=1;
3709 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
3710 indicator_used
[i
]=0;
3711 indicators
= kzalloc(sizeof(__u32
)*(INDICATORS_PER_CACHELINE
),
3719 qdio_release_qdio_memory(void)
3726 qdio_unregister_dbf_views(void)
3729 debug_unregister(qdio_dbf_setup
);
3731 debug_unregister(qdio_dbf_sbal
);
3733 debug_unregister(qdio_dbf_sense
);
3735 debug_unregister(qdio_dbf_trace
);
3736 #ifdef CONFIG_QDIO_DEBUG
3737 if (qdio_dbf_slsb_out
)
3738 debug_unregister(qdio_dbf_slsb_out
);
3739 if (qdio_dbf_slsb_in
)
3740 debug_unregister(qdio_dbf_slsb_in
);
3741 #endif /* CONFIG_QDIO_DEBUG */
3745 qdio_register_dbf_views(void)
3747 qdio_dbf_setup
=debug_register(QDIO_DBF_SETUP_NAME
,
3748 QDIO_DBF_SETUP_PAGES
,
3749 QDIO_DBF_SETUP_NR_AREAS
,
3750 QDIO_DBF_SETUP_LEN
);
3751 if (!qdio_dbf_setup
)
3753 debug_register_view(qdio_dbf_setup
,&debug_hex_ascii_view
);
3754 debug_set_level(qdio_dbf_setup
,QDIO_DBF_SETUP_LEVEL
);
3756 qdio_dbf_sbal
=debug_register(QDIO_DBF_SBAL_NAME
,
3757 QDIO_DBF_SBAL_PAGES
,
3758 QDIO_DBF_SBAL_NR_AREAS
,
3763 debug_register_view(qdio_dbf_sbal
,&debug_hex_ascii_view
);
3764 debug_set_level(qdio_dbf_sbal
,QDIO_DBF_SBAL_LEVEL
);
3766 qdio_dbf_sense
=debug_register(QDIO_DBF_SENSE_NAME
,
3767 QDIO_DBF_SENSE_PAGES
,
3768 QDIO_DBF_SENSE_NR_AREAS
,
3769 QDIO_DBF_SENSE_LEN
);
3770 if (!qdio_dbf_sense
)
3773 debug_register_view(qdio_dbf_sense
,&debug_hex_ascii_view
);
3774 debug_set_level(qdio_dbf_sense
,QDIO_DBF_SENSE_LEVEL
);
3776 qdio_dbf_trace
=debug_register(QDIO_DBF_TRACE_NAME
,
3777 QDIO_DBF_TRACE_PAGES
,
3778 QDIO_DBF_TRACE_NR_AREAS
,
3779 QDIO_DBF_TRACE_LEN
);
3780 if (!qdio_dbf_trace
)
3783 debug_register_view(qdio_dbf_trace
,&debug_hex_ascii_view
);
3784 debug_set_level(qdio_dbf_trace
,QDIO_DBF_TRACE_LEVEL
);
3786 #ifdef CONFIG_QDIO_DEBUG
3787 qdio_dbf_slsb_out
=debug_register(QDIO_DBF_SLSB_OUT_NAME
,
3788 QDIO_DBF_SLSB_OUT_PAGES
,
3789 QDIO_DBF_SLSB_OUT_NR_AREAS
,
3790 QDIO_DBF_SLSB_OUT_LEN
);
3791 if (!qdio_dbf_slsb_out
)
3793 debug_register_view(qdio_dbf_slsb_out
,&debug_hex_ascii_view
);
3794 debug_set_level(qdio_dbf_slsb_out
,QDIO_DBF_SLSB_OUT_LEVEL
);
3796 qdio_dbf_slsb_in
=debug_register(QDIO_DBF_SLSB_IN_NAME
,
3797 QDIO_DBF_SLSB_IN_PAGES
,
3798 QDIO_DBF_SLSB_IN_NR_AREAS
,
3799 QDIO_DBF_SLSB_IN_LEN
);
3800 if (!qdio_dbf_slsb_in
)
3802 debug_register_view(qdio_dbf_slsb_in
,&debug_hex_ascii_view
);
3803 debug_set_level(qdio_dbf_slsb_in
,QDIO_DBF_SLSB_IN_LEVEL
);
3804 #endif /* CONFIG_QDIO_DEBUG */
3807 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3808 qdio_unregister_dbf_views();
3812 static void *qdio_mempool_alloc(gfp_t gfp_mask
, void *size
)
3814 return (void *) get_zeroed_page(gfp_mask
|GFP_DMA
);
3817 static void qdio_mempool_free(void *element
, void *size
)
3819 free_page((unsigned long) element
);
3828 printk("qdio: loading %s\n",version
);
3830 res
=qdio_get_qdio_memory();
3834 res
= qdio_register_dbf_views();
3838 QDIO_DBF_TEXT0(0,setup
,"initQDIO");
3839 res
= bus_create_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3841 memset((void*)&perf_stats
,0,sizeof(perf_stats
));
3842 QDIO_DBF_TEXT0(0,setup
,"perfstat");
3844 QDIO_DBF_HEX0(0,setup
,&ptr
,sizeof(void*));
3846 qdio_add_procfs_entry();
3848 qdio_mempool_scssc
= mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS
,
3850 qdio_mempool_free
, NULL
);
3852 if (tiqdio_check_chsc_availability())
3853 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3855 tiqdio_register_thinints();
3863 tiqdio_unregister_thinints();
3864 qdio_remove_procfs_entry();
3865 qdio_release_qdio_memory();
3866 qdio_unregister_dbf_views();
3867 mempool_destroy(qdio_mempool_scssc
);
3868 bus_remove_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3869 printk("qdio: %s: module removed\n",version
);
3872 module_init(init_QDIO
);
3873 module_exit(cleanup_QDIO
);
3875 EXPORT_SYMBOL(qdio_allocate
);
3876 EXPORT_SYMBOL(qdio_establish
);
3877 EXPORT_SYMBOL(qdio_initialize
);
3878 EXPORT_SYMBOL(qdio_activate
);
3879 EXPORT_SYMBOL(do_QDIO
);
3880 EXPORT_SYMBOL(qdio_shutdown
);
3881 EXPORT_SYMBOL(qdio_free
);
3882 EXPORT_SYMBOL(qdio_cleanup
);
3883 EXPORT_SYMBOL(qdio_synchronize
);