3 * linux/drivers/s390/cio/qdio.c
5 * Linux for S/390 QDIO base support, Hipersocket base support
8 * Copyright 2000,2002 IBM Corporation
9 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
10 * 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
12 * Restriction: only 63 iqdio subchannels would have its own indicator,
13 * after that, subsequent subchannels share one indicator
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2, or (at your option)
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 #include <linux/module.h>
34 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/kernel.h>
38 #include <linux/proc_fs.h>
39 #include <linux/timer.h>
40 #include <linux/mempool.h>
42 #include <asm/ccwdev.h>
44 #include <asm/atomic.h>
45 #include <asm/semaphore.h>
46 #include <asm/timex.h>
48 #include <asm/debug.h>
49 #include <asm/s390_rdev.h>
60 /****************** MODULE PARAMETER VARIABLES ********************/
61 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
62 MODULE_DESCRIPTION("QDIO base support version 2, " \
63 "Copyright 2000 IBM Corporation");
64 MODULE_LICENSE("GPL");
66 /******************** HERE WE GO ***********************************/
68 static const char version
[] = "QDIO base support version 2";
70 static int qdio_performance_stats
= 0;
71 static int proc_perf_file_registration
;
72 static struct qdio_perf_stats perf_stats
;
74 static int hydra_thinints
;
75 static int is_passthrough
= 0;
78 static int indicator_used
[INDICATORS_PER_CACHELINE
];
79 static __u32
* volatile indicators
;
80 static __u32
volatile spare_indicator
;
81 static atomic_t spare_indicator_usecount
;
82 #define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
83 static mempool_t
*qdio_mempool_scssc
;
84 static struct kmem_cache
*qdio_q_cache
;
86 static debug_info_t
*qdio_dbf_setup
;
87 static debug_info_t
*qdio_dbf_sbal
;
88 static debug_info_t
*qdio_dbf_trace
;
89 static debug_info_t
*qdio_dbf_sense
;
90 #ifdef CONFIG_QDIO_DEBUG
91 static debug_info_t
*qdio_dbf_slsb_out
;
92 static debug_info_t
*qdio_dbf_slsb_in
;
93 #endif /* CONFIG_QDIO_DEBUG */
96 static volatile struct qdio_q
*tiq_list
=NULL
; /* volatile as it could change
97 during a while loop */
98 static DEFINE_SPINLOCK(ttiq_list_lock
);
99 static int register_thinint_result
;
100 static void tiqdio_tl(unsigned long);
101 static DECLARE_TASKLET(tiqdio_tasklet
,tiqdio_tl
,0);
103 /* not a macro, as one of the arguments is atomic_read */
105 qdio_min(int a
,int b
)
113 /***************** SCRUBBER HELPER ROUTINES **********************/
115 static inline void qdio_perf_stat_inc(atomic64_t
*count
)
117 if (qdio_performance_stats
)
121 static inline void qdio_perf_stat_dec(atomic64_t
*count
)
123 if (qdio_performance_stats
)
126 #else /* CONFIG_64BIT */
127 static inline void qdio_perf_stat_inc(atomic_t
*count
)
129 if (qdio_performance_stats
)
133 static inline void qdio_perf_stat_dec(atomic_t
*count
)
135 if (qdio_performance_stats
)
138 #endif /* CONFIG_64BIT */
141 qdio_get_micros(void)
143 return (get_clock() >> 12); /* time>>12 is microseconds */
147 * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
148 * the q in any case, so that we'll not be interrupted when we are in
149 * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
150 * ever works (last famous words)
153 qdio_reserve_q(struct qdio_q
*q
)
155 return atomic_add_return(1,&q
->use_count
) - 1;
159 qdio_release_q(struct qdio_q
*q
)
161 atomic_dec(&q
->use_count
);
166 qdio_check_ccq(struct qdio_q
*q
, unsigned int ccq
)
170 if (ccq
== 0 || ccq
== 32)
172 if (ccq
== 96 || ccq
== 97)
174 /*notify devices immediately*/
175 sprintf(dbf_text
,"%d", ccq
);
176 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
179 /* EQBS: extract buffer states */
181 qdio_do_eqbs(struct qdio_q
*q
, unsigned char *state
,
182 unsigned int *start
, unsigned int *cnt
)
184 struct qdio_irq
*irq
;
185 unsigned int tmp_cnt
, q_no
, ccq
;
191 irq
= (struct qdio_irq
*)q
->irq_ptr
;
194 q_no
+= irq
->no_input_qs
;
196 ccq
= do_eqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
197 rc
= qdio_check_ccq(q
, ccq
);
199 QDIO_DBF_TEXT5(1,trace
,"eqAGAIN");
203 QDIO_DBF_TEXT2(1,trace
,"eqberr");
204 sprintf(dbf_text
,"%2x,%2x,%d,%d",tmp_cnt
, *cnt
, ccq
, q_no
);
205 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
206 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
207 QDIO_STATUS_LOOK_FOR_ERROR
,
208 0, 0, 0, -1, -1, q
->int_parm
);
211 return (tmp_cnt
- *cnt
);
214 /* SQBS: set buffer states */
216 qdio_do_sqbs(struct qdio_q
*q
, unsigned char state
,
217 unsigned int *start
, unsigned int *cnt
)
219 struct qdio_irq
*irq
;
220 unsigned int tmp_cnt
, q_no
, ccq
;
226 irq
= (struct qdio_irq
*)q
->irq_ptr
;
229 q_no
+= irq
->no_input_qs
;
231 ccq
= do_sqbs(irq
->sch_token
, state
, q_no
, start
, cnt
);
232 rc
= qdio_check_ccq(q
, ccq
);
234 QDIO_DBF_TEXT5(1,trace
,"sqAGAIN");
238 QDIO_DBF_TEXT3(1,trace
,"sqberr");
239 sprintf(dbf_text
,"%2x,%2x",tmp_cnt
,*cnt
);
240 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
241 sprintf(dbf_text
,"%d,%d",ccq
,q_no
);
242 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
243 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
244 QDIO_STATUS_LOOK_FOR_ERROR
,
245 0, 0, 0, -1, -1, q
->int_parm
);
248 return (tmp_cnt
- *cnt
);
252 qdio_set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
253 unsigned char state
, unsigned int *count
)
256 struct qdio_irq
*irq
;
258 irq
= (struct qdio_irq
*)q
->irq_ptr
;
259 if (!irq
->is_qebsm
) {
260 slsb
= (char *)&q
->slsb
.acc
.val
[(*bufno
)];
264 return qdio_do_sqbs(q
, state
, bufno
, count
);
267 #ifdef CONFIG_QDIO_DEBUG
269 qdio_trace_slsb(struct qdio_q
*q
)
271 if (q
->queue_type
==QDIO_TRACE_QTYPE
) {
273 QDIO_DBF_HEX2(0,slsb_in
,&q
->slsb
,
274 QDIO_MAX_BUFFERS_PER_Q
);
276 QDIO_DBF_HEX2(0,slsb_out
,&q
->slsb
,
277 QDIO_MAX_BUFFERS_PER_Q
);
283 set_slsb(struct qdio_q
*q
, unsigned int *bufno
,
284 unsigned char state
, unsigned int *count
)
287 #ifdef CONFIG_QDIO_DEBUG
290 rc
= qdio_set_slsb(q
, bufno
, state
, count
);
291 #ifdef CONFIG_QDIO_DEBUG
297 qdio_siga_sync(struct qdio_q
*q
, unsigned int gpr2
,
302 QDIO_DBF_TEXT4(0,trace
,"sigasync");
303 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
305 qdio_perf_stat_inc(&perf_stats
.siga_syncs
);
307 cc
= do_siga_sync(q
->schid
, gpr2
, gpr3
);
309 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
315 qdio_siga_sync_q(struct qdio_q
*q
)
318 return qdio_siga_sync(q
, 0, q
->mask
);
319 return qdio_siga_sync(q
, q
->mask
, 0);
323 __do_siga_output(struct qdio_q
*q
, unsigned int *busy_bit
)
325 struct qdio_irq
*irq
;
329 irq
= (struct qdio_irq
*) q
->irq_ptr
;
331 schid
= *((u32
*)&q
->schid
);
333 schid
= irq
->sch_token
;
336 return do_siga_output(schid
, q
->mask
, busy_bit
, fc
);
340 * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
341 * an access exception
344 qdio_siga_output(struct qdio_q
*q
)
350 qdio_perf_stat_inc(&perf_stats
.siga_outs
);
352 QDIO_DBF_TEXT4(0,trace
,"sigaout");
353 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
356 cc
= __do_siga_output(q
, &busy_bit
);
357 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
358 if ((cc
==2) && (busy_bit
) && (q
->is_iqdio_q
)) {
361 if ((NOW
-start_time
)>QDIO_BUSY_BIT_PATIENCE
)
367 if ((cc
==2) && (busy_bit
))
368 cc
|= QDIO_SIGA_ERROR_B_BIT_SET
;
371 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
377 qdio_siga_input(struct qdio_q
*q
)
381 QDIO_DBF_TEXT4(0,trace
,"sigain");
382 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
384 qdio_perf_stat_inc(&perf_stats
.siga_ins
);
386 cc
= do_siga_input(q
->schid
, q
->mask
);
389 QDIO_DBF_HEX3(0,trace
,&cc
,sizeof(int*));
394 /* locked by the locks in qdio_activate and qdio_cleanup */
396 qdio_get_indicator(void)
400 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
401 if (!indicator_used
[i
]) {
405 atomic_inc(&spare_indicator_usecount
);
406 return (__u32
* volatile) &spare_indicator
;
409 /* locked by the locks in qdio_activate and qdio_cleanup */
411 qdio_put_indicator(__u32
*addr
)
415 if ( (addr
) && (addr
!=&spare_indicator
) ) {
419 if (addr
== &spare_indicator
)
420 atomic_dec(&spare_indicator_usecount
);
424 tiqdio_clear_summary_bit(__u32
*location
)
426 QDIO_DBF_TEXT5(0,trace
,"clrsummb");
427 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
433 tiqdio_set_summary_bit(__u32
*location
)
435 QDIO_DBF_TEXT5(0,trace
,"setsummb");
436 QDIO_DBF_HEX5(0,trace
,&location
,sizeof(void*));
442 tiqdio_sched_tl(void)
444 tasklet_hi_schedule(&tiqdio_tasklet
);
448 qdio_mark_tiq(struct qdio_q
*q
)
452 QDIO_DBF_TEXT4(0,trace
,"mark iq");
453 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
455 spin_lock_irqsave(&ttiq_list_lock
,flags
);
456 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
462 if ((q
->list_prev
) || (q
->list_next
))
470 q
->list_next
=tiq_list
;
471 q
->list_prev
=tiq_list
->list_prev
;
472 tiq_list
->list_prev
->list_next
=q
;
473 tiq_list
->list_prev
=q
;
475 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
477 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
481 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
486 qdio_mark_q(struct qdio_q
*q
)
488 QDIO_DBF_TEXT4(0,trace
,"mark q");
489 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
491 if (unlikely(atomic_read(&q
->is_in_shutdown
)))
494 tasklet_schedule(&q
->tasklet
);
498 qdio_stop_polling(struct qdio_q
*q
)
500 #ifdef QDIO_USE_PROCESSING_STATE
501 unsigned int tmp
, gsf
, count
= 1;
502 unsigned char state
= 0;
503 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
505 if (!atomic_xchg(&q
->polling
,0))
508 QDIO_DBF_TEXT4(0,trace
,"stoppoll");
509 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
511 /* show the card that we are not polling anymore */
515 tmp
= gsf
= GET_SAVED_FRONTIER(q
);
516 tmp
= ((tmp
+ QDIO_MAX_BUFFERS_PER_Q
-1) & (QDIO_MAX_BUFFERS_PER_Q
-1) );
517 set_slsb(q
, &tmp
, SLSB_P_INPUT_NOT_INIT
, &count
);
520 * we don't issue this SYNC_MEMORY, as we trust Rick T and
521 * moreover will not use the PROCESSING state under VM, so
522 * q->polling was 0 anyway
527 qdio_do_eqbs(q
, &state
, &gsf
, &count
);
529 state
= q
->slsb
.acc
.val
[gsf
];
530 if (state
!= SLSB_P_INPUT_PRIMED
)
533 * set our summary bit again, as otherwise there is a
534 * small window we can miss between resetting it and
535 * checking for PRIMED state
538 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
541 #else /* QDIO_USE_PROCESSING_STATE */
543 #endif /* QDIO_USE_PROCESSING_STATE */
547 * see the comment in do_QDIO and before qdio_reserve_q about the
548 * sophisticated locking outside of unmark_q, so that we don't need to
549 * disable the interrupts :-)
552 qdio_unmark_q(struct qdio_q
*q
)
556 QDIO_DBF_TEXT4(0,trace
,"unmark q");
557 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
559 if ((!q
->list_prev
)||(!q
->list_next
))
562 if ((q
->is_thinint_q
)&&(q
->is_input_q
)) {
564 spin_lock_irqsave(&ttiq_list_lock
,flags
);
565 /* in case cleanup has done this already and simultanously
566 * qdio_unmark_q is called from the interrupt handler, we've
567 * got to check this in this specific case again */
568 if ((!q
->list_prev
)||(!q
->list_next
))
570 if (q
->list_next
==q
) {
571 /* q was the only interesting q */
576 q
->list_next
->list_prev
=q
->list_prev
;
577 q
->list_prev
->list_next
=q
->list_next
;
578 tiq_list
=q
->list_next
;
583 spin_unlock_irqrestore(&ttiq_list_lock
,flags
);
587 static inline unsigned long
588 tiqdio_clear_global_summary(void)
592 QDIO_DBF_TEXT5(0,trace
,"clrglobl");
594 time
= do_clear_global_summary();
596 QDIO_DBF_HEX5(0,trace
,&time
,sizeof(unsigned long));
602 /************************* OUTBOUND ROUTINES *******************************/
604 qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q
*q
)
606 struct qdio_irq
*irq
;
608 unsigned int cnt
, count
, ftc
;
610 irq
= (struct qdio_irq
*) q
->irq_ptr
;
611 if ((!q
->is_iqdio_q
) && (!q
->hydra_gives_outbound_pcis
))
614 ftc
= q
->first_to_check
;
615 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
616 (QDIO_MAX_BUFFERS_PER_Q
-1));
618 return q
->first_to_check
;
619 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
621 return q
->first_to_check
;
623 case SLSB_P_OUTPUT_ERROR
:
624 QDIO_DBF_TEXT3(0,trace
,"outperr");
625 atomic_sub(cnt
, &q
->number_of_buffers_used
);
627 q
->error_status_flags
|=
628 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
629 q
->qdio_error
= SLSB_P_OUTPUT_ERROR
;
630 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
631 q
->first_to_check
= ftc
;
633 case SLSB_P_OUTPUT_EMPTY
:
634 QDIO_DBF_TEXT5(0,trace
,"outpempt");
635 atomic_sub(cnt
, &q
->number_of_buffers_used
);
636 q
->first_to_check
= ftc
;
638 case SLSB_CU_OUTPUT_PRIMED
:
639 /* all buffers primed */
640 QDIO_DBF_TEXT5(0,trace
,"outpprim");
645 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
646 return q
->first_to_check
;
650 qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q
*q
)
652 struct qdio_irq
*irq
;
654 int tmp
, ftc
, count
, cnt
;
658 irq
= (struct qdio_irq
*) q
->irq_ptr
;
659 ftc
= q
->first_to_check
;
660 count
= qdio_min(atomic_read(&q
->number_of_buffers_used
),
661 (QDIO_MAX_BUFFERS_PER_Q
-1));
663 return q
->first_to_check
;
664 cnt
= qdio_do_eqbs(q
, &state
, &ftc
, &count
);
666 return q
->first_to_check
;
668 case SLSB_P_INPUT_ERROR
:
669 #ifdef CONFIG_QDIO_DEBUG
670 QDIO_DBF_TEXT3(1,trace
,"inperr");
671 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
672 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
673 #endif /* CONFIG_QDIO_DEBUG */
675 q
->error_status_flags
|=
676 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
677 q
->qdio_error
= SLSB_P_INPUT_ERROR
;
678 q
->error_status_flags
|= QDIO_STATUS_LOOK_FOR_ERROR
;
679 atomic_sub(cnt
, &q
->number_of_buffers_used
);
680 q
->first_to_check
= ftc
;
682 case SLSB_P_INPUT_PRIMED
:
683 QDIO_DBF_TEXT3(0,trace
,"inptprim");
684 sprintf(dbf_text
,"%2x,%2x",ftc
,count
);
685 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
687 ftc
= q
->first_to_check
;
688 #ifdef QDIO_USE_PROCESSING_STATE
691 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
696 tmp
+= set_slsb(q
, &ftc
,
697 SLSB_P_INPUT_PROCESSING
, &cnt
);
698 atomic_set(&q
->polling
, 1);
700 tmp
= set_slsb(q
, &ftc
, SLSB_P_INPUT_NOT_INIT
, &cnt
);
702 atomic_sub(tmp
, &q
->number_of_buffers_used
);
703 q
->first_to_check
= ftc
;
705 case SLSB_CU_INPUT_EMPTY
:
706 case SLSB_P_INPUT_NOT_INIT
:
707 case SLSB_P_INPUT_PROCESSING
:
708 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
713 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
714 return q
->first_to_check
;
718 qdio_get_outbound_buffer_frontier(struct qdio_q
*q
)
720 struct qdio_irq
*irq
;
722 unsigned int count
= 1;
723 int first_not_to_check
, f
, f_mod_no
;
726 QDIO_DBF_TEXT4(0,trace
,"getobfro");
727 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
729 irq
= (struct qdio_irq
*) q
->irq_ptr
;
731 return qdio_qebsm_get_outbound_buffer_frontier(q
);
733 slsb
=&q
->slsb
.acc
.val
[0];
734 f_mod_no
=f
=q
->first_to_check
;
736 * f points to already processed elements, so f+no_used is correct...
737 * ... but: we don't check 128 buffers, as otherwise
738 * qdio_has_outbound_q_moved would return 0
740 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
741 (QDIO_MAX_BUFFERS_PER_Q
-1));
743 if ((!q
->is_iqdio_q
)&&(!q
->hydra_gives_outbound_pcis
))
747 if (f
==first_not_to_check
)
750 switch(slsb
[f_mod_no
]) {
752 /* the adapter has not fetched the output yet */
753 case SLSB_CU_OUTPUT_PRIMED
:
754 QDIO_DBF_TEXT5(0,trace
,"outpprim");
757 /* the adapter got it */
758 case SLSB_P_OUTPUT_EMPTY
:
759 atomic_dec(&q
->number_of_buffers_used
);
761 f_mod_no
=f
&(QDIO_MAX_BUFFERS_PER_Q
-1);
762 QDIO_DBF_TEXT5(0,trace
,"outpempt");
765 case SLSB_P_OUTPUT_ERROR
:
766 QDIO_DBF_TEXT3(0,trace
,"outperr");
767 sprintf(dbf_text
,"%x-%x-%x",f_mod_no
,
768 q
->sbal
[f_mod_no
]->element
[14].sbalf
.value
,
769 q
->sbal
[f_mod_no
]->element
[15].sbalf
.value
);
770 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
771 QDIO_DBF_HEX2(1,sbal
,q
->sbal
[f_mod_no
],256);
773 /* kind of process the buffer */
774 set_slsb(q
, &f_mod_no
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
777 * we increment the frontier, as this buffer
778 * was processed obviously
780 atomic_dec(&q
->number_of_buffers_used
);
781 f_mod_no
=(f_mod_no
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
784 q
->error_status_flags
|=
785 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
786 q
->qdio_error
=SLSB_P_OUTPUT_ERROR
;
787 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
793 QDIO_DBF_TEXT5(0,trace
,"outpni");
796 return (q
->first_to_check
=f_mod_no
);
799 /* all buffers are processed */
801 qdio_is_outbound_q_done(struct qdio_q
*q
)
804 #ifdef CONFIG_QDIO_DEBUG
808 no_used
=atomic_read(&q
->number_of_buffers_used
);
810 #ifdef CONFIG_QDIO_DEBUG
812 sprintf(dbf_text
,"oqisnt%02x",no_used
);
813 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
815 QDIO_DBF_TEXT4(0,trace
,"oqisdone");
817 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
818 #endif /* CONFIG_QDIO_DEBUG */
823 qdio_has_outbound_q_moved(struct qdio_q
*q
)
827 i
=qdio_get_outbound_buffer_frontier(q
);
829 if ( (i
!=GET_SAVED_FRONTIER(q
)) ||
830 (q
->error_status_flags
&QDIO_STATUS_LOOK_FOR_ERROR
) ) {
832 QDIO_DBF_TEXT4(0,trace
,"oqhasmvd");
833 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
836 QDIO_DBF_TEXT4(0,trace
,"oqhsntmv");
837 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
843 qdio_kick_outbound_q(struct qdio_q
*q
)
846 #ifdef CONFIG_QDIO_DEBUG
849 QDIO_DBF_TEXT4(0,trace
,"kickoutq");
850 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
851 #endif /* CONFIG_QDIO_DEBUG */
856 /* here's the story with cc=2 and busy bit set (thanks, Rick):
857 * VM's CP could present us cc=2 and busy bit set on SIGA-write
858 * during reconfiguration of their Guest LAN (only in HIPERS mode,
859 * QDIO mode is asynchronous -- cc=2 and busy bit there will take
860 * the queues down immediately; and not being under VM we have a
861 * problem on cc=2 and busy bit set right away).
863 * Therefore qdio_siga_output will try for a short time constantly,
864 * if such a condition occurs. If it doesn't change, it will
865 * increase the busy_siga_counter and save the timestamp, and
866 * schedule the queue for later processing (via mark_q, using the
867 * queue tasklet). __qdio_outbound_processing will check out the
868 * counter. If non-zero, it will call qdio_kick_outbound_q as often
869 * as the value of the counter. This will attempt further SIGA
870 * instructions. For each successful SIGA, the counter is
871 * decreased, for failing SIGAs the counter remains the same, after
873 * After some time of no movement, qdio_kick_outbound_q will
874 * finally fail and reflect corresponding error codes to call
875 * the upper layer module and have it take the queues down.
877 * Note that this is a change from the original HiperSockets design
878 * (saying cc=2 and busy bit means take the queues down), but in
879 * these days Guest LAN didn't exist... excessive cc=2 with busy bit
880 * conditions will still take the queues down, but the threshold is
881 * higher due to the Guest LAN environment.
885 result
=qdio_siga_output(q
);
889 /* went smooth this time, reset timestamp */
890 #ifdef CONFIG_QDIO_DEBUG
891 QDIO_DBF_TEXT3(0,trace
,"cc2reslv");
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 q
->timing
.busy_start
=0;
898 case (2|QDIO_SIGA_ERROR_B_BIT_SET
):
899 /* cc=2 and busy bit: */
900 atomic_inc(&q
->busy_siga_counter
);
902 /* if the last siga was successful, save
904 if (!q
->timing
.busy_start
)
905 q
->timing
.busy_start
=NOW
;
907 /* if we're in time, don't touch error_status_flags
909 if (NOW
-q
->timing
.busy_start
<QDIO_BUSY_BIT_GIVE_UP
) {
913 QDIO_DBF_TEXT2(0,trace
,"cc2REPRT");
914 #ifdef CONFIG_QDIO_DEBUG
915 sprintf(dbf_text
,"%4x%2x%2x",q
->schid
.sch_no
,q
->q_no
,
916 atomic_read(&q
->busy_siga_counter
));
917 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
918 #endif /* CONFIG_QDIO_DEBUG */
919 /* else fallthrough and report error */
921 /* for plain cc=1, 2 or 3: */
923 q
->error_status_flags
|=
924 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
925 q
->error_status_flags
|=
926 QDIO_STATUS_LOOK_FOR_ERROR
;
927 q
->siga_error
=result
;
932 qdio_kick_outbound_handler(struct qdio_q
*q
)
934 int start
, end
, real_end
, count
;
935 #ifdef CONFIG_QDIO_DEBUG
939 start
= q
->first_element_to_kick
;
940 /* last_move_ftc was just updated */
941 real_end
= GET_SAVED_FRONTIER(q
);
942 end
= (real_end
+QDIO_MAX_BUFFERS_PER_Q
-1)&
943 (QDIO_MAX_BUFFERS_PER_Q
-1);
944 count
= (end
+QDIO_MAX_BUFFERS_PER_Q
+1-start
)&
945 (QDIO_MAX_BUFFERS_PER_Q
-1);
947 #ifdef CONFIG_QDIO_DEBUG
948 QDIO_DBF_TEXT4(0,trace
,"kickouth");
949 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
951 sprintf(dbf_text
,"s=%2xc=%2x",start
,count
);
952 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
953 #endif /* CONFIG_QDIO_DEBUG */
955 if (q
->state
==QDIO_IRQ_STATE_ACTIVE
)
956 q
->handler(q
->cdev
,QDIO_STATUS_OUTBOUND_INT
|
957 q
->error_status_flags
,
958 q
->qdio_error
,q
->siga_error
,q
->q_no
,start
,count
,
961 /* for the next time: */
962 q
->first_element_to_kick
=real_end
;
965 q
->error_status_flags
=0;
969 __qdio_outbound_processing(struct qdio_q
*q
)
973 QDIO_DBF_TEXT4(0,trace
,"qoutproc");
974 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
976 if (unlikely(qdio_reserve_q(q
))) {
978 qdio_perf_stat_inc(&perf_stats
.outbound_tl_runs_resched
);
979 /* as we're sissies, we'll check next time */
980 if (likely(!atomic_read(&q
->is_in_shutdown
))) {
982 QDIO_DBF_TEXT4(0,trace
,"busy,agn");
986 qdio_perf_stat_inc(&perf_stats
.outbound_tl_runs
);
987 qdio_perf_stat_inc(&perf_stats
.tl_runs
);
989 /* see comment in qdio_kick_outbound_q */
990 siga_attempts
=atomic_read(&q
->busy_siga_counter
);
991 while (siga_attempts
) {
992 atomic_dec(&q
->busy_siga_counter
);
993 qdio_kick_outbound_q(q
);
997 if (qdio_has_outbound_q_moved(q
))
998 qdio_kick_outbound_handler(q
);
1000 if (q
->queue_type
== QDIO_ZFCP_QFMT
) {
1001 if ((!q
->hydra_gives_outbound_pcis
) &&
1002 (!qdio_is_outbound_q_done(q
)))
1005 else if (((!q
->is_iqdio_q
) && (!q
->is_pci_out
)) ||
1006 (q
->queue_type
== QDIO_IQDIO_QFMT_ASYNCH
)) {
1008 * make sure buffer switch from PRIMED to EMPTY is noticed
1009 * and outbound_handler is called
1011 if (qdio_is_outbound_q_done(q
)) {
1012 del_timer(&q
->timer
);
1014 if (!timer_pending(&q
->timer
))
1015 mod_timer(&q
->timer
, jiffies
+
1016 QDIO_FORCE_CHECK_TIMEOUT
);
1024 qdio_outbound_processing(struct qdio_q
*q
)
1026 __qdio_outbound_processing(q
);
1029 /************************* INBOUND ROUTINES *******************************/
1033 qdio_get_inbound_buffer_frontier(struct qdio_q
*q
)
1035 struct qdio_irq
*irq
;
1037 volatile char *slsb
;
1038 unsigned int count
= 1;
1039 int first_not_to_check
;
1040 #ifdef CONFIG_QDIO_DEBUG
1042 #endif /* CONFIG_QDIO_DEBUG */
1043 #ifdef QDIO_USE_PROCESSING_STATE
1044 int last_position
=-1;
1045 #endif /* QDIO_USE_PROCESSING_STATE */
1047 QDIO_DBF_TEXT4(0,trace
,"getibfro");
1048 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1050 irq
= (struct qdio_irq
*) q
->irq_ptr
;
1052 return qdio_qebsm_get_inbound_buffer_frontier(q
);
1054 slsb
=&q
->slsb
.acc
.val
[0];
1055 f_mod_no
=f
=q
->first_to_check
;
1057 * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1060 first_not_to_check
=f
+qdio_min(atomic_read(&q
->number_of_buffers_used
),
1061 (QDIO_MAX_BUFFERS_PER_Q
-1));
1064 * we don't use this one, as a PCI or we after a thin interrupt
1065 * will sync the queues
1070 f_mod_no
=f
&(QDIO_MAX_BUFFERS_PER_Q
-1);
1071 if (f
==first_not_to_check
)
1073 switch (slsb
[f_mod_no
]) {
1075 /* CU_EMPTY means frontier is reached */
1076 case SLSB_CU_INPUT_EMPTY
:
1077 QDIO_DBF_TEXT5(0,trace
,"inptempt");
1080 /* P_PRIMED means set slsb to P_PROCESSING and move on */
1081 case SLSB_P_INPUT_PRIMED
:
1082 QDIO_DBF_TEXT5(0,trace
,"inptprim");
1084 #ifdef QDIO_USE_PROCESSING_STATE
1086 * as soon as running under VM, polling the input queues will
1087 * kill VM in terms of CP overhead
1090 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1092 /* set the previous buffer to NOT_INIT. The current
1093 * buffer will be set to PROCESSING at the end of
1094 * this function to avoid further interrupts. */
1095 if (last_position
>=0)
1096 set_slsb(q
, &last_position
,
1097 SLSB_P_INPUT_NOT_INIT
, &count
);
1098 atomic_set(&q
->polling
,1);
1099 last_position
=f_mod_no
;
1101 #else /* QDIO_USE_PROCESSING_STATE */
1102 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1103 #endif /* QDIO_USE_PROCESSING_STATE */
1105 * not needed, as the inbound queue will be synced on the next
1106 * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1110 atomic_dec(&q
->number_of_buffers_used
);
1113 case SLSB_P_INPUT_NOT_INIT
:
1114 case SLSB_P_INPUT_PROCESSING
:
1115 QDIO_DBF_TEXT5(0,trace
,"inpnipro");
1118 /* P_ERROR means frontier is reached, break and report error */
1119 case SLSB_P_INPUT_ERROR
:
1120 #ifdef CONFIG_QDIO_DEBUG
1121 sprintf(dbf_text
,"inperr%2x",f_mod_no
);
1122 QDIO_DBF_TEXT3(1,trace
,dbf_text
);
1123 #endif /* CONFIG_QDIO_DEBUG */
1124 QDIO_DBF_HEX2(1,sbal
,q
->sbal
[f_mod_no
],256);
1126 /* kind of process the buffer */
1127 set_slsb(q
, &f_mod_no
, SLSB_P_INPUT_NOT_INIT
, &count
);
1130 q
->error_status_flags
|=
1131 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR
;
1132 q
->qdio_error
=SLSB_P_INPUT_ERROR
;
1133 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
1135 /* we increment the frontier, as this buffer
1136 * was processed obviously */
1137 f_mod_no
=(f_mod_no
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1138 atomic_dec(&q
->number_of_buffers_used
);
1140 #ifdef QDIO_USE_PROCESSING_STATE
1142 #endif /* QDIO_USE_PROCESSING_STATE */
1146 /* everything else means frontier not changed (HALTED or so) */
1151 q
->first_to_check
=f_mod_no
;
1153 #ifdef QDIO_USE_PROCESSING_STATE
1154 if (last_position
>=0)
1155 set_slsb(q
, &last_position
, SLSB_P_INPUT_PROCESSING
, &count
);
1156 #endif /* QDIO_USE_PROCESSING_STATE */
1158 QDIO_DBF_HEX4(0,trace
,&q
->first_to_check
,sizeof(int));
1160 return q
->first_to_check
;
1164 qdio_has_inbound_q_moved(struct qdio_q
*q
)
1168 i
=qdio_get_inbound_buffer_frontier(q
);
1169 if ( (i
!=GET_SAVED_FRONTIER(q
)) ||
1170 (q
->error_status_flags
&QDIO_STATUS_LOOK_FOR_ERROR
) ) {
1172 if ((!q
->siga_sync
)&&(!q
->hydra_gives_outbound_pcis
))
1175 QDIO_DBF_TEXT4(0,trace
,"inhasmvd");
1176 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1179 QDIO_DBF_TEXT4(0,trace
,"inhsntmv");
1180 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1185 /* means, no more buffers to be filled */
1187 tiqdio_is_inbound_q_done(struct qdio_q
*q
)
1190 unsigned int start_buf
, count
;
1191 unsigned char state
= 0;
1192 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1194 #ifdef CONFIG_QDIO_DEBUG
1198 no_used
=atomic_read(&q
->number_of_buffers_used
);
1200 /* propagate the change from 82 to 80 through VM */
1203 #ifdef CONFIG_QDIO_DEBUG
1205 sprintf(dbf_text
,"iqisnt%02x",no_used
);
1206 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1208 QDIO_DBF_TEXT4(0,trace
,"iniqisdo");
1210 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1211 #endif /* CONFIG_QDIO_DEBUG */
1215 if (!q
->siga_sync
&& !irq
->is_qebsm
)
1216 /* we'll check for more primed buffers in qeth_stop_polling */
1218 if (irq
->is_qebsm
) {
1220 start_buf
= q
->first_to_check
;
1221 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1223 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1224 if (state
!= SLSB_P_INPUT_PRIMED
)
1226 * nothing more to do, if next buffer is not PRIMED.
1227 * note that we did a SYNC_MEMORY before, that there
1228 * has been a sychnronization.
1229 * we will return 0 below, as there is nothing to do
1230 * (stop_polling not necessary, as we have not been
1231 * using the PROCESSING state
1236 * ok, the next input buffer is primed. that means, that device state
1237 * change indicator and adapter local summary are set, so we will find
1239 * we will return 0 below, as there is nothing to do, except scheduling
1240 * ourselves for the next time.
1242 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1248 qdio_is_inbound_q_done(struct qdio_q
*q
)
1251 unsigned int start_buf
, count
;
1252 unsigned char state
= 0;
1253 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
1255 #ifdef CONFIG_QDIO_DEBUG
1259 no_used
=atomic_read(&q
->number_of_buffers_used
);
1262 * we need that one for synchronization with the adapter, as it
1263 * does a kind of PCI avoidance
1268 QDIO_DBF_TEXT4(0,trace
,"inqisdnA");
1269 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1272 if (irq
->is_qebsm
) {
1274 start_buf
= q
->first_to_check
;
1275 qdio_do_eqbs(q
, &state
, &start_buf
, &count
);
1277 state
= q
->slsb
.acc
.val
[q
->first_to_check
];
1278 if (state
== SLSB_P_INPUT_PRIMED
) {
1279 /* we got something to do */
1280 QDIO_DBF_TEXT4(0,trace
,"inqisntA");
1281 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1285 /* on VM, we don't poll, so the q is always done here */
1288 if (q
->hydra_gives_outbound_pcis
)
1292 * at this point we know, that inbound first_to_check
1293 * has (probably) not moved (see qdio_inbound_processing)
1295 if (NOW
>GET_SAVED_TIMESTAMP(q
)+q
->timing
.threshold
) {
1296 #ifdef CONFIG_QDIO_DEBUG
1297 QDIO_DBF_TEXT4(0,trace
,"inqisdon");
1298 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1299 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1300 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1301 #endif /* CONFIG_QDIO_DEBUG */
1304 #ifdef CONFIG_QDIO_DEBUG
1305 QDIO_DBF_TEXT4(0,trace
,"inqisntd");
1306 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1307 sprintf(dbf_text
,"pf%02xcn%02x",q
->first_to_check
,no_used
);
1308 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1309 #endif /* CONFIG_QDIO_DEBUG */
1315 qdio_kick_inbound_handler(struct qdio_q
*q
)
1317 int count
, start
, end
, real_end
, i
;
1318 #ifdef CONFIG_QDIO_DEBUG
1322 QDIO_DBF_TEXT4(0,trace
,"kickinh");
1323 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1325 start
=q
->first_element_to_kick
;
1326 real_end
=q
->first_to_check
;
1327 end
=(real_end
+QDIO_MAX_BUFFERS_PER_Q
-1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1335 i
=(i
+1)&(QDIO_MAX_BUFFERS_PER_Q
-1);
1338 #ifdef CONFIG_QDIO_DEBUG
1339 sprintf(dbf_text
,"s=%2xc=%2x",start
,count
);
1340 QDIO_DBF_TEXT4(0,trace
,dbf_text
);
1341 #endif /* CONFIG_QDIO_DEBUG */
1343 if (likely(q
->state
==QDIO_IRQ_STATE_ACTIVE
))
1345 QDIO_STATUS_INBOUND_INT
|q
->error_status_flags
,
1346 q
->qdio_error
,q
->siga_error
,q
->q_no
,start
,count
,
1349 /* for the next time: */
1350 q
->first_element_to_kick
=real_end
;
1353 q
->error_status_flags
=0;
1355 qdio_perf_stat_inc(&perf_stats
.inbound_cnt
);
1359 __tiqdio_inbound_processing(struct qdio_q
*q
, int spare_ind_was_set
)
1361 struct qdio_irq
*irq_ptr
;
1365 QDIO_DBF_TEXT4(0,trace
,"iqinproc");
1366 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1369 * we first want to reserve the q, so that we know, that we don't
1370 * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1373 if (unlikely(qdio_reserve_q(q
))) {
1375 qdio_perf_stat_inc(&perf_stats
.inbound_thin_tl_runs_resched
);
1377 * as we might just be about to stop polling, we make
1378 * sure that we check again at least once more
1383 qdio_perf_stat_inc(&perf_stats
.inbound_thin_tl_runs
);
1384 if (unlikely(atomic_read(&q
->is_in_shutdown
))) {
1390 * we reset spare_ind_was_set, when the queue does not use the
1393 if (spare_ind_was_set
)
1394 spare_ind_was_set
= (q
->dev_st_chg_ind
== &spare_indicator
);
1396 if (!(*(q
->dev_st_chg_ind
)) && !spare_ind_was_set
)
1399 * q->dev_st_chg_ind is the indicator, be it shared or not.
1400 * only clear it, if indicator is non-shared
1402 if (!spare_ind_was_set
)
1403 tiqdio_clear_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1405 if (q
->hydra_gives_outbound_pcis
) {
1406 if (!q
->siga_sync_done_on_thinints
) {
1408 } else if ((!q
->siga_sync_done_on_outb_tis
)&&
1409 (q
->hydra_gives_outbound_pcis
)) {
1410 SYNC_MEMORY_ALL_OUTB
;
1416 * maybe we have to do work on our outbound queues... at least
1417 * we have to check the outbound-int-capable thinint-capable
1420 if (q
->hydra_gives_outbound_pcis
) {
1421 irq_ptr
= (struct qdio_irq
*)q
->irq_ptr
;
1422 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1423 oq
= irq_ptr
->output_qs
[i
];
1424 if (!qdio_is_outbound_q_done(oq
)) {
1425 qdio_perf_stat_dec(&perf_stats
.tl_runs
);
1426 __qdio_outbound_processing(oq
);
1431 if (!qdio_has_inbound_q_moved(q
))
1434 qdio_kick_inbound_handler(q
);
1435 if (tiqdio_is_inbound_q_done(q
))
1436 if (!qdio_stop_polling(q
)) {
1438 * we set the flags to get into the stuff next time,
1439 * see also comment in qdio_stop_polling
1441 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1449 tiqdio_inbound_processing(struct qdio_q
*q
)
1451 __tiqdio_inbound_processing(q
, atomic_read(&spare_indicator_usecount
));
1455 __qdio_inbound_processing(struct qdio_q
*q
)
1459 QDIO_DBF_TEXT4(0,trace
,"qinproc");
1460 QDIO_DBF_HEX4(0,trace
,&q
,sizeof(void*));
1462 if (unlikely(qdio_reserve_q(q
))) {
1464 qdio_perf_stat_inc(&perf_stats
.inbound_tl_runs_resched
);
1465 /* as we're sissies, we'll check next time */
1466 if (likely(!atomic_read(&q
->is_in_shutdown
))) {
1468 QDIO_DBF_TEXT4(0,trace
,"busy,agn");
1472 qdio_perf_stat_inc(&perf_stats
.inbound_tl_runs
);
1473 qdio_perf_stat_inc(&perf_stats
.tl_runs
);
1476 if (qdio_has_inbound_q_moved(q
)) {
1477 qdio_kick_inbound_handler(q
);
1478 if (!qdio_stop_polling(q
)) {
1480 if (q_laps
<QDIO_Q_LAPS
)
1485 if (!qdio_is_inbound_q_done(q
))
1486 /* means poll time is not yet over */
1494 qdio_inbound_processing(struct qdio_q
*q
)
1496 __qdio_inbound_processing(q
);
1499 /************************* MAIN ROUTINES *******************************/
1501 #ifdef QDIO_USE_PROCESSING_STATE
1503 tiqdio_reset_processing_state(struct qdio_q
*q
, int q_laps
)
1511 * under VM, we have not used the PROCESSING state, so no
1512 * need to stop polling
1517 if (unlikely(qdio_reserve_q(q
))) {
1519 qdio_perf_stat_inc(&perf_stats
.inbound_thin_tl_runs_resched
);
1521 * as we might just be about to stop polling, we make
1522 * sure that we check again at least once more
1526 * sanity -- we'd get here without setting the
1529 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1533 if (qdio_stop_polling(q
)) {
1537 if (q_laps
<QDIO_Q_LAPS
-1) {
1542 * we set the flags to get into the stuff
1543 * next time, see also comment in qdio_stop_polling
1545 tiqdio_set_summary_bit((__u32
*)q
->dev_st_chg_ind
);
1551 #endif /* QDIO_USE_PROCESSING_STATE */
1554 tiqdio_inbound_checks(void)
1557 int spare_ind_was_set
=0;
1558 #ifdef QDIO_USE_PROCESSING_STATE
1560 #endif /* QDIO_USE_PROCESSING_STATE */
1562 QDIO_DBF_TEXT4(0,trace
,"iqdinbck");
1563 QDIO_DBF_TEXT5(0,trace
,"iqlocsum");
1565 #ifdef QDIO_USE_PROCESSING_STATE
1567 #endif /* QDIO_USE_PROCESSING_STATE */
1569 /* when the spare indicator is used and set, save that and clear it */
1570 if ((atomic_read(&spare_indicator_usecount
)) && spare_indicator
) {
1571 spare_ind_was_set
= 1;
1572 tiqdio_clear_summary_bit((__u32
*)&spare_indicator
);
1575 q
=(struct qdio_q
*)tiq_list
;
1579 __tiqdio_inbound_processing(q
, spare_ind_was_set
);
1580 q
=(struct qdio_q
*)q
->list_next
;
1581 } while (q
!=(struct qdio_q
*)tiq_list
);
1583 #ifdef QDIO_USE_PROCESSING_STATE
1584 q
=(struct qdio_q
*)tiq_list
;
1588 ret
= tiqdio_reset_processing_state(q
, q_laps
);
1595 q
= (struct qdio_q
*)q
->list_next
;
1601 } while (q
!=(struct qdio_q
*)tiq_list
);
1602 #endif /* QDIO_USE_PROCESSING_STATE */
1606 tiqdio_tl(unsigned long data
)
1608 QDIO_DBF_TEXT4(0,trace
,"iqdio_tl");
1610 qdio_perf_stat_inc(&perf_stats
.tl_runs
);
1612 tiqdio_inbound_checks();
1615 /********************* GENERAL HELPER_ROUTINES ***********************/
1618 qdio_release_irq_memory(struct qdio_irq
*irq_ptr
)
1623 for (i
= 0; i
< QDIO_MAX_QUEUES_PER_IRQ
; i
++) {
1624 q
= irq_ptr
->input_qs
[i
];
1626 free_page((unsigned long) q
->slib
);
1627 kmem_cache_free(qdio_q_cache
, q
);
1629 q
= irq_ptr
->output_qs
[i
];
1631 free_page((unsigned long) q
->slib
);
1632 kmem_cache_free(qdio_q_cache
, q
);
1635 free_page((unsigned long) irq_ptr
->qdr
);
1636 free_page((unsigned long) irq_ptr
);
1640 qdio_set_impl_params(struct qdio_irq
*irq_ptr
,
1641 unsigned int qib_param_field_format
,
1642 /* pointer to 128 bytes or NULL, if no param field */
1643 unsigned char *qib_param_field
,
1644 /* pointer to no_queues*128 words of data or NULL */
1645 unsigned int no_input_qs
,
1646 unsigned int no_output_qs
,
1647 unsigned long *input_slib_elements
,
1648 unsigned long *output_slib_elements
)
1655 irq_ptr
->qib
.pfmt
=qib_param_field_format
;
1656 if (qib_param_field
)
1657 memcpy(irq_ptr
->qib
.parm
,qib_param_field
,
1658 QDIO_MAX_BUFFERS_PER_Q
);
1660 if (input_slib_elements
)
1661 for (i
=0;i
<no_input_qs
;i
++) {
1662 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1663 irq_ptr
->input_qs
[i
]->slib
->slibe
[j
].parms
=
1664 input_slib_elements
[
1665 i
*QDIO_MAX_BUFFERS_PER_Q
+j
];
1667 if (output_slib_elements
)
1668 for (i
=0;i
<no_output_qs
;i
++) {
1669 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1670 irq_ptr
->output_qs
[i
]->slib
->slibe
[j
].parms
=
1671 output_slib_elements
[
1672 i
*QDIO_MAX_BUFFERS_PER_Q
+j
];
1677 qdio_alloc_qs(struct qdio_irq
*irq_ptr
,
1678 int no_input_qs
, int no_output_qs
)
1683 for (i
= 0; i
< no_input_qs
; i
++) {
1684 q
= kmem_cache_alloc(qdio_q_cache
, GFP_KERNEL
);
1687 memset(q
, 0, sizeof(*q
));
1689 q
->slib
= (struct slib
*) __get_free_page(GFP_KERNEL
);
1691 kmem_cache_free(qdio_q_cache
, q
);
1694 irq_ptr
->input_qs
[i
]=q
;
1697 for (i
= 0; i
< no_output_qs
; i
++) {
1698 q
= kmem_cache_alloc(qdio_q_cache
, GFP_KERNEL
);
1701 memset(q
, 0, sizeof(*q
));
1703 q
->slib
= (struct slib
*) __get_free_page(GFP_KERNEL
);
1705 kmem_cache_free(qdio_q_cache
, q
);
1708 irq_ptr
->output_qs
[i
]=q
;
1714 qdio_fill_qs(struct qdio_irq
*irq_ptr
, struct ccw_device
*cdev
,
1715 int no_input_qs
, int no_output_qs
,
1716 qdio_handler_t
*input_handler
,
1717 qdio_handler_t
*output_handler
,
1718 unsigned long int_parm
,int q_format
,
1719 unsigned long flags
,
1720 void **inbound_sbals_array
,
1721 void **outbound_sbals_array
)
1725 char dbf_text
[20]; /* see qdio_initialize */
1729 sprintf(dbf_text
,"qfqs%4x",cdev
->private->schid
.sch_no
);
1730 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1731 for (i
=0;i
<no_input_qs
;i
++) {
1732 q
=irq_ptr
->input_qs
[i
];
1734 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1735 sprintf(dbf_text
,"in-q%4x",i
);
1736 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1737 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1739 memset(q
->slib
,0,PAGE_SIZE
);
1740 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1744 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1745 q
->sbal
[j
]=*(inbound_sbals_array
++);
1747 q
->queue_type
=q_format
;
1748 q
->int_parm
=int_parm
;
1749 q
->schid
= irq_ptr
->schid
;
1750 q
->irq_ptr
= irq_ptr
;
1755 q
->first_to_check
=0;
1757 q
->handler
=input_handler
;
1758 q
->dev_st_chg_ind
=irq_ptr
->dev_st_chg_ind
;
1760 q
->tasklet
.data
=(unsigned long)q
;
1761 /* q->is_thinint_q isn't valid at this time, but
1762 * irq_ptr->is_thinint_irq is */
1763 q
->tasklet
.func
=(void(*)(unsigned long))
1764 ((irq_ptr
->is_thinint_irq
)?&tiqdio_inbound_processing
:
1765 &qdio_inbound_processing
);
1767 /* actually this is not used for inbound queues. yet. */
1768 atomic_set(&q
->busy_siga_counter
,0);
1769 q
->timing
.busy_start
=0;
1771 /* for (j=0;j<QDIO_STATS_NUMBER;j++)
1772 q->timing.last_transfer_times[j]=(qdio_get_micros()/
1773 QDIO_STATS_NUMBER)*j;
1774 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1778 if (i
>0) irq_ptr
->input_qs
[i
-1]->slib
->nsliba
=
1779 (unsigned long)(q
->slib
);
1780 q
->slib
->sla
=(unsigned long)(q
->sl
);
1781 q
->slib
->slsba
=(unsigned long)(&q
->slsb
.acc
.val
[0]);
1784 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1785 q
->sl
->element
[j
].sbal
=(unsigned long)(q
->sbal
[j
]);
1787 QDIO_DBF_TEXT2(0,setup
,"sl-sb-b0");
1789 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1790 ptr
=(void*)&q
->slsb
;
1791 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1792 ptr
=(void*)q
->sbal
[0];
1793 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1796 if (!irq_ptr
->is_qebsm
) {
1797 unsigned int count
= 1;
1798 for (j
= 0; j
< QDIO_MAX_BUFFERS_PER_Q
; j
++)
1799 set_slsb(q
, &j
, SLSB_P_INPUT_NOT_INIT
, &count
);
1803 for (i
=0;i
<no_output_qs
;i
++) {
1804 q
=irq_ptr
->output_qs
[i
];
1805 memset(q
,0,((char*)&q
->slib
)-((char*)q
));
1807 sprintf(dbf_text
,"outq%4x",i
);
1808 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
1809 QDIO_DBF_HEX0(0,setup
,&q
,sizeof(void*));
1811 memset(q
->slib
,0,PAGE_SIZE
);
1812 q
->sl
=(struct sl
*)(((char*)q
->slib
)+PAGE_SIZE
/2);
1816 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1817 q
->sbal
[j
]=*(outbound_sbals_array
++);
1819 q
->queue_type
=q_format
;
1820 if ((q
->queue_type
== QDIO_IQDIO_QFMT
) &&
1821 (no_output_qs
> 1) &&
1822 (i
== no_output_qs
-1))
1823 q
->queue_type
= QDIO_IQDIO_QFMT_ASYNCH
;
1824 q
->int_parm
=int_parm
;
1827 q
->schid
= irq_ptr
->schid
;
1829 q
->irq_ptr
= irq_ptr
;
1832 q
->first_to_check
=0;
1834 q
->handler
=output_handler
;
1836 q
->tasklet
.data
=(unsigned long)q
;
1837 q
->tasklet
.func
=(void(*)(unsigned long))
1838 &qdio_outbound_processing
;
1839 q
->timer
.function
=(void(*)(unsigned long))
1840 &qdio_outbound_processing
;
1841 q
->timer
.data
= (long)q
;
1842 init_timer(&q
->timer
);
1844 atomic_set(&q
->busy_siga_counter
,0);
1845 q
->timing
.busy_start
=0;
1848 if (i
>0) irq_ptr
->output_qs
[i
-1]->slib
->nsliba
=
1849 (unsigned long)(q
->slib
);
1850 q
->slib
->sla
=(unsigned long)(q
->sl
);
1851 q
->slib
->slsba
=(unsigned long)(&q
->slsb
.acc
.val
[0]);
1854 for (j
=0;j
<QDIO_MAX_BUFFERS_PER_Q
;j
++)
1855 q
->sl
->element
[j
].sbal
=(unsigned long)(q
->sbal
[j
]);
1857 QDIO_DBF_TEXT2(0,setup
,"sl-sb-b0");
1859 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1860 ptr
=(void*)&q
->slsb
;
1861 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1862 ptr
=(void*)q
->sbal
[0];
1863 QDIO_DBF_HEX2(0,setup
,&ptr
,sizeof(void*));
1866 if (!irq_ptr
->is_qebsm
) {
1867 unsigned int count
= 1;
1868 for (j
= 0; j
< QDIO_MAX_BUFFERS_PER_Q
; j
++)
1869 set_slsb(q
, &j
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
1875 qdio_fill_thresholds(struct qdio_irq
*irq_ptr
,
1876 unsigned int no_input_qs
,
1877 unsigned int no_output_qs
,
1878 unsigned int min_input_threshold
,
1879 unsigned int max_input_threshold
,
1880 unsigned int min_output_threshold
,
1881 unsigned int max_output_threshold
)
1886 for (i
=0;i
<no_input_qs
;i
++) {
1887 q
=irq_ptr
->input_qs
[i
];
1888 q
->timing
.threshold
=max_input_threshold
;
1889 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1890 q->threshold_classes[j].threshold=
1891 min_input_threshold+
1892 (max_input_threshold-min_input_threshold)/
1895 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1897 for (i
=0;i
<no_output_qs
;i
++) {
1898 q
=irq_ptr
->output_qs
[i
];
1899 q
->timing
.threshold
=max_output_threshold
;
1900 /* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1901 q->threshold_classes[j].threshold=
1902 min_output_threshold+
1903 (max_output_threshold-min_output_threshold)/
1906 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1911 tiqdio_thinint_handler(void)
1913 QDIO_DBF_TEXT4(0,trace
,"thin_int");
1915 qdio_perf_stat_inc(&perf_stats
.thinints
);
1917 /* SVS only when needed:
1918 * issue SVS to benefit from iqdio interrupt avoidance
1919 * (SVS clears AISOI)*/
1921 tiqdio_clear_global_summary();
1923 tiqdio_inbound_checks();
1928 qdio_set_state(struct qdio_irq
*irq_ptr
, enum qdio_irq_states state
)
1931 #ifdef CONFIG_QDIO_DEBUG
1934 QDIO_DBF_TEXT5(0,trace
,"newstate");
1935 sprintf(dbf_text
,"%4x%4x",irq_ptr
->schid
.sch_no
,state
);
1936 QDIO_DBF_TEXT5(0,trace
,dbf_text
);
1937 #endif /* CONFIG_QDIO_DEBUG */
1939 irq_ptr
->state
=state
;
1940 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
1941 irq_ptr
->input_qs
[i
]->state
=state
;
1942 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
1943 irq_ptr
->output_qs
[i
]->state
=state
;
1948 qdio_irq_check_sense(struct subchannel_id schid
, struct irb
*irb
)
1952 if (irb
->esw
.esw0
.erw
.cons
) {
1953 sprintf(dbf_text
,"sens%4x",schid
.sch_no
);
1954 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
1955 QDIO_DBF_HEX0(0,sense
,irb
,QDIO_DBF_SENSE_LEN
);
1957 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1958 QDIO_HEXDUMP16(WARN
,"irb: ",irb
);
1959 QDIO_HEXDUMP16(WARN
,"sense data: ",irb
->ecw
);
1965 qdio_handle_pci(struct qdio_irq
*irq_ptr
)
1970 qdio_perf_stat_inc(&perf_stats
.pcis
);
1971 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
1972 q
=irq_ptr
->input_qs
[i
];
1973 if (q
->is_input_q
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
)
1976 qdio_perf_stat_dec(&perf_stats
.tl_runs
);
1977 __qdio_inbound_processing(q
);
1980 if (!irq_ptr
->hydra_gives_outbound_pcis
)
1982 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
1983 q
=irq_ptr
->output_qs
[i
];
1984 if (qdio_is_outbound_q_done(q
))
1986 qdio_perf_stat_dec(&perf_stats
.tl_runs
);
1987 if (!irq_ptr
->sync_done_on_outb_pcis
)
1989 __qdio_outbound_processing(q
);
1993 static void qdio_establish_handle_irq(struct ccw_device
*, int, int);
1996 qdio_handle_activate_check(struct ccw_device
*cdev
, unsigned long intparm
,
1997 int cstat
, int dstat
)
1999 struct qdio_irq
*irq_ptr
;
2003 irq_ptr
= cdev
->private->qdio_data
;
2005 QDIO_DBF_TEXT2(1, trace
, "ick2");
2006 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2007 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2008 QDIO_DBF_HEX2(0,trace
,&intparm
,sizeof(int));
2009 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2010 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2011 QDIO_PRINT_ERR("received check condition on activate " \
2012 "queues on device %s (cs=x%x, ds=x%x).\n",
2013 cdev
->dev
.bus_id
, cstat
, dstat
);
2014 if (irq_ptr
->no_input_qs
) {
2015 q
=irq_ptr
->input_qs
[0];
2016 } else if (irq_ptr
->no_output_qs
) {
2017 q
=irq_ptr
->output_qs
[0];
2019 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2021 goto omit_handler_call
;
2023 q
->handler(q
->cdev
,QDIO_STATUS_ACTIVATE_CHECK_CONDITION
|
2024 QDIO_STATUS_LOOK_FOR_ERROR
,
2025 0,0,0,-1,-1,q
->int_parm
);
2027 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_STOPPED
);
2032 qdio_call_shutdown(struct work_struct
*work
)
2034 struct ccw_device_private
*priv
;
2035 struct ccw_device
*cdev
;
2037 priv
= container_of(work
, struct ccw_device_private
, kick_work
);
2039 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
2040 put_device(&cdev
->dev
);
2044 qdio_timeout_handler(struct ccw_device
*cdev
)
2046 struct qdio_irq
*irq_ptr
;
2049 QDIO_DBF_TEXT2(0, trace
, "qtoh");
2050 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2051 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2053 irq_ptr
= cdev
->private->qdio_data
;
2054 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2055 QDIO_DBF_TEXT2(0, trace
, dbf_text
);
2057 switch (irq_ptr
->state
) {
2058 case QDIO_IRQ_STATE_INACTIVE
:
2059 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
2060 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2061 QDIO_DBF_TEXT2(1,setup
,"eq:timeo");
2062 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2064 case QDIO_IRQ_STATE_CLEANUP
:
2065 QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
2067 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2068 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2070 case QDIO_IRQ_STATE_ESTABLISHED
:
2071 case QDIO_IRQ_STATE_ACTIVE
:
2072 /* I/O has been terminated by common I/O layer. */
2073 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2074 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2075 QDIO_DBF_TEXT2(1, trace
, "cio:term");
2076 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_STOPPED
);
2077 if (get_device(&cdev
->dev
)) {
2078 /* Can't call shutdown from interrupt context. */
2079 PREPARE_WORK(&cdev
->private->kick_work
,
2080 qdio_call_shutdown
);
2081 queue_work(ccw_device_work
, &cdev
->private->kick_work
);
2087 ccw_device_set_timeout(cdev
, 0);
2088 wake_up(&cdev
->private->wait_q
);
2092 qdio_handler(struct ccw_device
*cdev
, unsigned long intparm
, struct irb
*irb
)
2094 struct qdio_irq
*irq_ptr
;
2098 #ifdef CONFIG_QDIO_DEBUG
2099 QDIO_DBF_TEXT4(0, trace
, "qint");
2100 sprintf(dbf_text
, "%s", cdev
->dev
.bus_id
);
2101 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2102 #endif /* CONFIG_QDIO_DEBUG */
2105 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2106 "handler, device %s\n", cdev
->dev
.bus_id
);
2110 irq_ptr
= cdev
->private->qdio_data
;
2112 QDIO_DBF_TEXT2(1, trace
, "uint");
2113 sprintf(dbf_text
,"%s", cdev
->dev
.bus_id
);
2114 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2115 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2121 /* Currently running i/o is in error. */
2122 switch (PTR_ERR(irb
)) {
2124 QDIO_PRINT_ERR("i/o error on device %s\n",
2128 qdio_timeout_handler(cdev
);
2131 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2132 PTR_ERR(irb
), cdev
->dev
.bus_id
);
2137 qdio_irq_check_sense(irq_ptr
->schid
, irb
);
2139 #ifdef CONFIG_QDIO_DEBUG
2140 sprintf(dbf_text
, "state:%d", irq_ptr
->state
);
2141 QDIO_DBF_TEXT4(0, trace
, dbf_text
);
2142 #endif /* CONFIG_QDIO_DEBUG */
2144 cstat
= irb
->scsw
.cstat
;
2145 dstat
= irb
->scsw
.dstat
;
2147 switch (irq_ptr
->state
) {
2148 case QDIO_IRQ_STATE_INACTIVE
:
2149 qdio_establish_handle_irq(cdev
, cstat
, dstat
);
2152 case QDIO_IRQ_STATE_CLEANUP
:
2153 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2156 case QDIO_IRQ_STATE_ESTABLISHED
:
2157 case QDIO_IRQ_STATE_ACTIVE
:
2158 if (cstat
& SCHN_STAT_PCI
) {
2159 qdio_handle_pci(irq_ptr
);
2163 if ((cstat
&~SCHN_STAT_PCI
)||dstat
) {
2164 qdio_handle_activate_check(cdev
, intparm
, cstat
, dstat
);
2168 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2170 irq_ptr
->state
, cdev
->dev
.bus_id
);
2172 wake_up(&cdev
->private->wait_q
);
2177 qdio_synchronize(struct ccw_device
*cdev
, unsigned int flags
,
2178 unsigned int queue_number
)
2182 struct qdio_irq
*irq_ptr
;
2184 #ifdef CONFIG_QDIO_DEBUG
2185 char dbf_text
[15]="SyncXXXX";
2188 irq_ptr
= cdev
->private->qdio_data
;
2192 #ifdef CONFIG_QDIO_DEBUG
2193 *((int*)(&dbf_text
[4])) = irq_ptr
->schid
.sch_no
;
2194 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2195 *((int*)(&dbf_text
[0]))=flags
;
2196 *((int*)(&dbf_text
[4]))=queue_number
;
2197 QDIO_DBF_HEX4(0,trace
,dbf_text
,QDIO_DBF_TRACE_LEN
);
2198 #endif /* CONFIG_QDIO_DEBUG */
2200 if (flags
&QDIO_FLAG_SYNC_INPUT
) {
2201 q
=irq_ptr
->input_qs
[queue_number
];
2204 if (!(irq_ptr
->is_qebsm
))
2205 cc
= do_siga_sync(q
->schid
, 0, q
->mask
);
2206 } else if (flags
&QDIO_FLAG_SYNC_OUTPUT
) {
2207 q
=irq_ptr
->output_qs
[queue_number
];
2210 if (!(irq_ptr
->is_qebsm
))
2211 cc
= do_siga_sync(q
->schid
, q
->mask
, 0);
2217 QDIO_DBF_HEX3(0,trace
,&ptr
,sizeof(int));
2223 qdio_check_subchannel_qebsm(struct qdio_irq
*irq_ptr
, unsigned char qdioac
,
2224 unsigned long token
)
2228 unsigned int count
, start_buf
;
2231 /*check if QEBSM is disabled */
2232 if (!(irq_ptr
->is_qebsm
) || !(qdioac
& 0x01)) {
2233 irq_ptr
->is_qebsm
= 0;
2234 irq_ptr
->sch_token
= 0;
2235 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2236 QDIO_DBF_TEXT0(0,setup
,"noV=V");
2239 irq_ptr
->sch_token
= token
;
2241 for (i
= 0; i
< irq_ptr
->no_input_qs
;i
++) {
2242 q
= irq_ptr
->input_qs
[i
];
2243 count
= QDIO_MAX_BUFFERS_PER_Q
;
2245 set_slsb(q
, &start_buf
, SLSB_P_INPUT_NOT_INIT
, &count
);
2247 sprintf(dbf_text
,"V=V:%2x",irq_ptr
->is_qebsm
);
2248 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2249 sprintf(dbf_text
,"%8lx",irq_ptr
->sch_token
);
2250 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2252 for (i
= 0; i
< irq_ptr
->no_output_qs
; i
++) {
2253 q
= irq_ptr
->output_qs
[i
];
2254 count
= QDIO_MAX_BUFFERS_PER_Q
;
2256 set_slsb(q
, &start_buf
, SLSB_P_OUTPUT_NOT_INIT
, &count
);
2261 qdio_get_ssqd_information(struct qdio_irq
*irq_ptr
)
2264 unsigned char qdioac
;
2266 struct chsc_header request
;
2274 struct chsc_header response
;
2293 QDIO_DBF_TEXT0(0,setup
,"getssqd");
2295 ssqd_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2297 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2298 "SIGAs for sch x%x.\n", irq_ptr
->schid
.sch_no
);
2299 irq_ptr
->qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2300 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2301 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2302 irq_ptr
->is_qebsm
= 0;
2303 irq_ptr
->sch_token
= 0;
2304 irq_ptr
->qib
.rflags
&= ~QIB_RFLAGS_ENABLE_QEBSM
;
2308 ssqd_area
->request
= (struct chsc_header
) {
2312 ssqd_area
->first_sch
= irq_ptr
->schid
.sch_no
;
2313 ssqd_area
->last_sch
= irq_ptr
->schid
.sch_no
;
2314 ssqd_area
->ssid
= irq_ptr
->schid
.ssid
;
2315 result
= chsc(ssqd_area
);
2318 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
2319 "SIGAs for sch 0.%x.%x.\n", result
,
2320 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2321 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2322 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2323 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2324 irq_ptr
->is_qebsm
= 0;
2328 if (ssqd_area
->response
.code
!= QDIO_CHSC_RESPONSE_CODE_OK
) {
2329 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2330 "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n",
2331 ssqd_area
->response
.code
,
2332 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2333 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2334 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2335 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* all flags set */
2336 irq_ptr
->is_qebsm
= 0;
2339 if (!(ssqd_area
->flags
& CHSC_FLAG_QDIO_CAPABILITY
) ||
2340 !(ssqd_area
->flags
& CHSC_FLAG_VALIDITY
) ||
2341 (ssqd_area
->sch
!= irq_ptr
->schid
.sch_no
)) {
2342 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2343 "using all SIGAs.\n",
2344 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2345 qdioac
= CHSC_FLAG_SIGA_INPUT_NECESSARY
|
2346 CHSC_FLAG_SIGA_OUTPUT_NECESSARY
|
2347 CHSC_FLAG_SIGA_SYNC_NECESSARY
; /* worst case */
2348 irq_ptr
->is_qebsm
= 0;
2351 qdioac
= ssqd_area
->qdioac1
;
2353 qdio_check_subchannel_qebsm(irq_ptr
, qdioac
,
2354 ssqd_area
->sch_token
);
2355 mempool_free(ssqd_area
, qdio_mempool_scssc
);
2356 irq_ptr
->qdioac
= qdioac
;
2360 tiqdio_check_chsc_availability(void)
2364 if (!css_characteristics_avail
)
2367 /* Check for bit 41. */
2368 if (!css_general_characteristics
.aif
) {
2369 QDIO_PRINT_WARN("Adapter interruption facility not " \
2374 /* Check for bits 107 and 108. */
2375 if (!css_chsc_characteristics
.scssc
||
2376 !css_chsc_characteristics
.scsscf
) {
2377 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2378 "not available.\n");
2382 /* Check for OSA/FCP thin interrupts (bit 67). */
2383 hydra_thinints
= css_general_characteristics
.aif_osa
;
2384 sprintf(dbf_text
,"hydrati%1x", hydra_thinints
);
2385 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2388 /* Check for QEBSM support in general (bit 58). */
2389 is_passthrough
= css_general_characteristics
.qebsm
;
2391 sprintf(dbf_text
,"cssQBS:%1x", is_passthrough
);
2392 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2394 /* Check for aif time delay disablement fac (bit 56). If installed,
2395 * omit svs even under lpar (good point by rick again) */
2396 omit_svs
= css_general_characteristics
.aif_tdd
;
2397 sprintf(dbf_text
,"omitsvs%1x", omit_svs
);
2398 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2404 tiqdio_set_subchannel_ind(struct qdio_irq
*irq_ptr
, int reset_to_zero
)
2406 unsigned long real_addr_local_summary_bit
;
2407 unsigned long real_addr_dev_st_chg_ind
;
2411 unsigned int resp_code
;
2415 struct chsc_header request
;
2420 u64 summary_indicator_addr
;
2421 u64 subchannel_indicator_addr
;
2426 u32 word_with_d_bit
;
2427 /* set to 0x10000000 to enable
2428 * time delay disablement facility */
2430 struct subchannel_id schid
;
2431 u32 reserved6
[1004];
2432 struct chsc_header response
;
2436 if (!irq_ptr
->is_thinint_irq
)
2439 if (reset_to_zero
) {
2440 real_addr_local_summary_bit
=0;
2441 real_addr_dev_st_chg_ind
=0;
2443 real_addr_local_summary_bit
=
2444 virt_to_phys((volatile void *)indicators
);
2445 real_addr_dev_st_chg_ind
=
2446 virt_to_phys((volatile void *)irq_ptr
->dev_st_chg_ind
);
2449 scssc_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2451 QDIO_PRINT_WARN("No memory for setting indicators on " \
2452 "subchannel 0.%x.%x.\n",
2453 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2456 scssc_area
->request
= (struct chsc_header
) {
2460 scssc_area
->operation_code
= 0;
2462 scssc_area
->summary_indicator_addr
= real_addr_local_summary_bit
;
2463 scssc_area
->subchannel_indicator_addr
= real_addr_dev_st_chg_ind
;
2464 scssc_area
->ks
= QDIO_STORAGE_KEY
;
2465 scssc_area
->kc
= QDIO_STORAGE_KEY
;
2466 scssc_area
->isc
= TIQDIO_THININT_ISC
;
2467 scssc_area
->schid
= irq_ptr
->schid
;
2468 /* enables the time delay disablement facility. Don't care
2469 * whether it is really there (i.e. we haven't checked for
2471 if (css_general_characteristics
.aif_tdd
)
2472 scssc_area
->word_with_d_bit
= 0x10000000;
2474 QDIO_PRINT_WARN("Time delay disablement facility " \
2477 result
= chsc(scssc_area
);
2479 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2481 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,result
);
2486 resp_code
= scssc_area
->response
.code
;
2487 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2488 QDIO_PRINT_WARN("response upon setting indicators " \
2489 "is 0x%x.\n",resp_code
);
2490 sprintf(dbf_text
,"sidR%4x",resp_code
);
2491 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2492 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2493 ptr
=&scssc_area
->response
;
2494 QDIO_DBF_HEX2(1,setup
,&ptr
,QDIO_DBF_SETUP_LEN
);
2499 QDIO_DBF_TEXT2(0,setup
,"setscind");
2500 QDIO_DBF_HEX2(0,setup
,&real_addr_local_summary_bit
,
2501 sizeof(unsigned long));
2502 QDIO_DBF_HEX2(0,setup
,&real_addr_dev_st_chg_ind
,sizeof(unsigned long));
2505 mempool_free(scssc_area
, qdio_mempool_scssc
);
2511 tiqdio_set_delay_target(struct qdio_irq
*irq_ptr
, unsigned long delay_target
)
2513 unsigned int resp_code
;
2519 struct chsc_header request
;
2526 u32 reserved5
[1009];
2527 struct chsc_header response
;
2531 if (!irq_ptr
->is_thinint_irq
)
2534 scsscf_area
= mempool_alloc(qdio_mempool_scssc
, GFP_ATOMIC
);
2536 QDIO_PRINT_WARN("No memory for setting delay target on " \
2537 "subchannel 0.%x.%x.\n",
2538 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
2541 scsscf_area
->request
= (struct chsc_header
) {
2546 scsscf_area
->delay_target
= delay_target
<<16;
2548 result
=chsc(scsscf_area
);
2550 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2551 "cc=%i. Continuing.\n",
2552 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2558 resp_code
= scsscf_area
->response
.code
;
2559 if (resp_code
!=QDIO_CHSC_RESPONSE_CODE_OK
) {
2560 QDIO_PRINT_WARN("response upon setting delay target " \
2561 "is 0x%x. Continuing.\n",resp_code
);
2562 sprintf(dbf_text
,"sdtR%4x",resp_code
);
2563 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2564 QDIO_DBF_TEXT1(0,setup
,dbf_text
);
2565 ptr
=&scsscf_area
->response
;
2566 QDIO_DBF_HEX2(1,trace
,&ptr
,QDIO_DBF_TRACE_LEN
);
2568 QDIO_DBF_TEXT2(0,trace
,"delytrgt");
2569 QDIO_DBF_HEX2(0,trace
,&delay_target
,sizeof(unsigned long));
2570 result
= 0; /* not critical */
2572 mempool_free(scsscf_area
, qdio_mempool_scssc
);
2577 qdio_cleanup(struct ccw_device
*cdev
, int how
)
2579 struct qdio_irq
*irq_ptr
;
2583 irq_ptr
= cdev
->private->qdio_data
;
2587 sprintf(dbf_text
,"qcln%4x",irq_ptr
->schid
.sch_no
);
2588 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2589 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2591 rc
= qdio_shutdown(cdev
, how
);
2592 if ((rc
== 0) || (rc
== -EINPROGRESS
))
2593 rc
= qdio_free(cdev
);
2598 qdio_shutdown(struct ccw_device
*cdev
, int how
)
2600 struct qdio_irq
*irq_ptr
;
2604 unsigned long flags
;
2608 irq_ptr
= cdev
->private->qdio_data
;
2612 down(&irq_ptr
->setting_up_sema
);
2614 sprintf(dbf_text
,"qsqs%4x",irq_ptr
->schid
.sch_no
);
2615 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2616 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2618 /* mark all qs as uninteresting */
2619 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++)
2620 atomic_set(&irq_ptr
->input_qs
[i
]->is_in_shutdown
,1);
2622 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++)
2623 atomic_set(&irq_ptr
->output_qs
[i
]->is_in_shutdown
,1);
2625 tasklet_kill(&tiqdio_tasklet
);
2627 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2628 qdio_unmark_q(irq_ptr
->input_qs
[i
]);
2629 tasklet_kill(&irq_ptr
->input_qs
[i
]->tasklet
);
2630 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2631 !atomic_read(&irq_ptr
->
2634 QDIO_NO_USE_COUNT_TIMEOUT
);
2635 if (atomic_read(&irq_ptr
->input_qs
[i
]->use_count
))
2636 result
=-EINPROGRESS
;
2639 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2640 tasklet_kill(&irq_ptr
->output_qs
[i
]->tasklet
);
2641 del_timer(&irq_ptr
->output_qs
[i
]->timer
);
2642 wait_event_interruptible_timeout(cdev
->private->wait_q
,
2643 !atomic_read(&irq_ptr
->
2646 QDIO_NO_USE_COUNT_TIMEOUT
);
2647 if (atomic_read(&irq_ptr
->output_qs
[i
]->use_count
))
2648 result
=-EINPROGRESS
;
2651 /* cleanup subchannel */
2652 spin_lock_irqsave(get_ccwdev_lock(cdev
),flags
);
2653 if (how
&QDIO_FLAG_CLEANUP_USING_CLEAR
) {
2654 rc
= ccw_device_clear(cdev
, QDIO_DOING_CLEANUP
);
2655 timeout
=QDIO_CLEANUP_CLEAR_TIMEOUT
;
2656 } else if (how
&QDIO_FLAG_CLEANUP_USING_HALT
) {
2657 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2658 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2659 } else { /* default behaviour */
2660 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
2661 timeout
=QDIO_CLEANUP_HALT_TIMEOUT
;
2663 if (rc
== -ENODEV
) {
2664 /* No need to wait for device no longer present. */
2665 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2666 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2667 } else if (((void *)cdev
->handler
!= (void *)qdio_handler
) && rc
== 0) {
2669 * Whoever put another handler there, has to cope with the
2670 * interrupt theirself. Might happen if qdio_shutdown was
2671 * called on already shutdown queues, but this shouldn't have
2674 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2675 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2676 } else if (rc
== 0) {
2677 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_CLEANUP
);
2678 ccw_device_set_timeout(cdev
, timeout
);
2679 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),flags
);
2681 wait_event(cdev
->private->wait_q
,
2682 irq_ptr
->state
== QDIO_IRQ_STATE_INACTIVE
||
2683 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
2685 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2686 "device %s\n", result
, cdev
->dev
.bus_id
);
2687 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
2691 if (irq_ptr
->is_thinint_irq
) {
2692 qdio_put_indicator((__u32
*)irq_ptr
->dev_st_chg_ind
);
2693 tiqdio_set_subchannel_ind(irq_ptr
,1);
2694 /* reset adapter interrupt indicators */
2697 /* exchange int handlers, if necessary */
2698 if ((void*)cdev
->handler
== (void*)qdio_handler
)
2699 cdev
->handler
=irq_ptr
->original_int_handler
;
2701 /* Ignore errors. */
2702 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
2703 ccw_device_set_timeout(cdev
, 0);
2705 up(&irq_ptr
->setting_up_sema
);
2710 qdio_free(struct ccw_device
*cdev
)
2712 struct qdio_irq
*irq_ptr
;
2715 irq_ptr
= cdev
->private->qdio_data
;
2719 down(&irq_ptr
->setting_up_sema
);
2721 sprintf(dbf_text
,"qfqs%4x",irq_ptr
->schid
.sch_no
);
2722 QDIO_DBF_TEXT1(0,trace
,dbf_text
);
2723 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2725 cdev
->private->qdio_data
= NULL
;
2727 up(&irq_ptr
->setting_up_sema
);
2729 qdio_release_irq_memory(irq_ptr
);
2730 module_put(THIS_MODULE
);
2735 qdio_allocate_do_dbf(struct qdio_initialize
*init_data
)
2737 char dbf_text
[20]; /* if a printf printed out more than 8 chars */
2739 sprintf(dbf_text
,"qfmt:%x",init_data
->q_format
);
2740 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2741 QDIO_DBF_HEX0(0,setup
,init_data
->adapter_name
,8);
2742 sprintf(dbf_text
,"qpff%4x",init_data
->qib_param_field_format
);
2743 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2744 QDIO_DBF_HEX0(0,setup
,&init_data
->qib_param_field
,sizeof(char*));
2745 QDIO_DBF_HEX0(0,setup
,&init_data
->input_slib_elements
,sizeof(long*));
2746 QDIO_DBF_HEX0(0,setup
,&init_data
->output_slib_elements
,sizeof(long*));
2747 sprintf(dbf_text
,"miit%4x",init_data
->min_input_threshold
);
2748 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2749 sprintf(dbf_text
,"mait%4x",init_data
->max_input_threshold
);
2750 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2751 sprintf(dbf_text
,"miot%4x",init_data
->min_output_threshold
);
2752 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2753 sprintf(dbf_text
,"maot%4x",init_data
->max_output_threshold
);
2754 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2755 sprintf(dbf_text
,"niq:%4x",init_data
->no_input_qs
);
2756 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2757 sprintf(dbf_text
,"noq:%4x",init_data
->no_output_qs
);
2758 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2759 QDIO_DBF_HEX0(0,setup
,&init_data
->input_handler
,sizeof(void*));
2760 QDIO_DBF_HEX0(0,setup
,&init_data
->output_handler
,sizeof(void*));
2761 QDIO_DBF_HEX0(0,setup
,&init_data
->int_parm
,sizeof(long));
2762 QDIO_DBF_HEX0(0,setup
,&init_data
->flags
,sizeof(long));
2763 QDIO_DBF_HEX0(0,setup
,&init_data
->input_sbal_addr_array
,sizeof(void*));
2764 QDIO_DBF_HEX0(0,setup
,&init_data
->output_sbal_addr_array
,sizeof(void*));
2768 qdio_allocate_fill_input_desc(struct qdio_irq
*irq_ptr
, int i
, int iqfmt
)
2770 irq_ptr
->input_qs
[i
]->is_iqdio_q
= iqfmt
;
2771 irq_ptr
->input_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2773 irq_ptr
->qdr
->qdf0
[i
].sliba
=(unsigned long)(irq_ptr
->input_qs
[i
]->slib
);
2775 irq_ptr
->qdr
->qdf0
[i
].sla
=(unsigned long)(irq_ptr
->input_qs
[i
]->sl
);
2777 irq_ptr
->qdr
->qdf0
[i
].slsba
=
2778 (unsigned long)(&irq_ptr
->input_qs
[i
]->slsb
.acc
.val
[0]);
2780 irq_ptr
->qdr
->qdf0
[i
].akey
=QDIO_STORAGE_KEY
;
2781 irq_ptr
->qdr
->qdf0
[i
].bkey
=QDIO_STORAGE_KEY
;
2782 irq_ptr
->qdr
->qdf0
[i
].ckey
=QDIO_STORAGE_KEY
;
2783 irq_ptr
->qdr
->qdf0
[i
].dkey
=QDIO_STORAGE_KEY
;
2787 qdio_allocate_fill_output_desc(struct qdio_irq
*irq_ptr
, int i
,
2790 irq_ptr
->output_qs
[i
]->is_iqdio_q
= iqfmt
;
2791 irq_ptr
->output_qs
[i
]->is_thinint_q
= irq_ptr
->is_thinint_irq
;
2793 irq_ptr
->qdr
->qdf0
[i
+j
].sliba
=(unsigned long)(irq_ptr
->output_qs
[i
]->slib
);
2795 irq_ptr
->qdr
->qdf0
[i
+j
].sla
=(unsigned long)(irq_ptr
->output_qs
[i
]->sl
);
2797 irq_ptr
->qdr
->qdf0
[i
+j
].slsba
=
2798 (unsigned long)(&irq_ptr
->output_qs
[i
]->slsb
.acc
.val
[0]);
2800 irq_ptr
->qdr
->qdf0
[i
+j
].akey
=QDIO_STORAGE_KEY
;
2801 irq_ptr
->qdr
->qdf0
[i
+j
].bkey
=QDIO_STORAGE_KEY
;
2802 irq_ptr
->qdr
->qdf0
[i
+j
].ckey
=QDIO_STORAGE_KEY
;
2803 irq_ptr
->qdr
->qdf0
[i
+j
].dkey
=QDIO_STORAGE_KEY
;
2808 qdio_initialize_set_siga_flags_input(struct qdio_irq
*irq_ptr
)
2812 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
2813 irq_ptr
->input_qs
[i
]->siga_sync
=
2814 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2815 irq_ptr
->input_qs
[i
]->siga_in
=
2816 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2817 irq_ptr
->input_qs
[i
]->siga_out
=
2818 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2819 irq_ptr
->input_qs
[i
]->siga_sync_done_on_thinints
=
2820 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2821 irq_ptr
->input_qs
[i
]->hydra_gives_outbound_pcis
=
2822 irq_ptr
->hydra_gives_outbound_pcis
;
2823 irq_ptr
->input_qs
[i
]->siga_sync_done_on_outb_tis
=
2825 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2826 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2827 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2828 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2834 qdio_initialize_set_siga_flags_output(struct qdio_irq
*irq_ptr
)
2838 for (i
=0;i
<irq_ptr
->no_output_qs
;i
++) {
2839 irq_ptr
->output_qs
[i
]->siga_sync
=
2840 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
;
2841 irq_ptr
->output_qs
[i
]->siga_in
=
2842 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_INPUT_NECESSARY
;
2843 irq_ptr
->output_qs
[i
]->siga_out
=
2844 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_OUTPUT_NECESSARY
;
2845 irq_ptr
->output_qs
[i
]->siga_sync_done_on_thinints
=
2846 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
;
2847 irq_ptr
->output_qs
[i
]->hydra_gives_outbound_pcis
=
2848 irq_ptr
->hydra_gives_outbound_pcis
;
2849 irq_ptr
->output_qs
[i
]->siga_sync_done_on_outb_tis
=
2851 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2852 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
))==
2853 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
|
2854 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS
));
2860 qdio_establish_irq_check_for_errors(struct ccw_device
*cdev
, int cstat
,
2864 struct qdio_irq
*irq_ptr
;
2866 irq_ptr
= cdev
->private->qdio_data
;
2868 if (cstat
|| (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
))) {
2869 sprintf(dbf_text
,"ick1%4x",irq_ptr
->schid
.sch_no
);
2870 QDIO_DBF_TEXT2(1,trace
,dbf_text
);
2871 QDIO_DBF_HEX2(0,trace
,&dstat
,sizeof(int));
2872 QDIO_DBF_HEX2(0,trace
,&cstat
,sizeof(int));
2873 QDIO_PRINT_ERR("received check condition on establish " \
2874 "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2875 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2877 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ERR
);
2880 if (!(dstat
& DEV_STAT_DEV_END
)) {
2881 QDIO_DBF_TEXT2(1,setup
,"eq:no de");
2882 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2883 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2884 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
2885 "device end: dstat=%02x, cstat=%02x\n",
2886 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
2888 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2892 if (dstat
& ~(DEV_STAT_CHN_END
|DEV_STAT_DEV_END
)) {
2893 QDIO_DBF_TEXT2(1,setup
,"eq:badio");
2894 QDIO_DBF_HEX2(0,setup
,&dstat
, sizeof(dstat
));
2895 QDIO_DBF_HEX2(0,setup
,&cstat
, sizeof(cstat
));
2896 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
2897 "the following devstat: dstat=%02x, "
2898 "cstat=%02x\n", irq_ptr
->schid
.ssid
,
2899 irq_ptr
->schid
.sch_no
, dstat
, cstat
);
2900 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
2907 qdio_establish_handle_irq(struct ccw_device
*cdev
, int cstat
, int dstat
)
2909 struct qdio_irq
*irq_ptr
;
2912 irq_ptr
= cdev
->private->qdio_data
;
2914 sprintf(dbf_text
,"qehi%4x",cdev
->private->schid
.sch_no
);
2915 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2916 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2918 if (qdio_establish_irq_check_for_errors(cdev
, cstat
, dstat
)) {
2919 ccw_device_set_timeout(cdev
, 0);
2923 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_ESTABLISHED
);
2924 ccw_device_set_timeout(cdev
, 0);
2928 qdio_initialize(struct qdio_initialize
*init_data
)
2933 sprintf(dbf_text
,"qini%4x",init_data
->cdev
->private->schid
.sch_no
);
2934 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2935 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2937 rc
= qdio_allocate(init_data
);
2939 rc
= qdio_establish(init_data
);
2941 qdio_free(init_data
->cdev
);
2949 qdio_allocate(struct qdio_initialize
*init_data
)
2951 struct qdio_irq
*irq_ptr
;
2954 sprintf(dbf_text
,"qalc%4x",init_data
->cdev
->private->schid
.sch_no
);
2955 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
2956 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
2957 if ( (init_data
->no_input_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2958 (init_data
->no_output_qs
>QDIO_MAX_QUEUES_PER_IRQ
) ||
2959 ((init_data
->no_input_qs
) && (!init_data
->input_handler
)) ||
2960 ((init_data
->no_output_qs
) && (!init_data
->output_handler
)) )
2963 if (!init_data
->input_sbal_addr_array
)
2966 if (!init_data
->output_sbal_addr_array
)
2969 qdio_allocate_do_dbf(init_data
);
2972 irq_ptr
= (void *) get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
2974 QDIO_DBF_TEXT0(0,setup
,"irq_ptr:");
2975 QDIO_DBF_HEX0(0,setup
,&irq_ptr
,sizeof(void*));
2978 QDIO_PRINT_ERR("allocation of irq_ptr failed!\n");
2982 init_MUTEX(&irq_ptr
->setting_up_sema
);
2984 /* QDR must be in DMA area since CCW data address is only 32 bit */
2985 irq_ptr
->qdr
= (struct qdr
*) __get_free_page(GFP_KERNEL
| GFP_DMA
);
2986 if (!(irq_ptr
->qdr
)) {
2987 free_page((unsigned long) irq_ptr
);
2988 QDIO_PRINT_ERR("allocation of irq_ptr->qdr failed!\n");
2991 QDIO_DBF_TEXT0(0,setup
,"qdr:");
2992 QDIO_DBF_HEX0(0,setup
,&irq_ptr
->qdr
,sizeof(void*));
2994 if (qdio_alloc_qs(irq_ptr
,
2995 init_data
->no_input_qs
,
2996 init_data
->no_output_qs
)) {
2997 QDIO_PRINT_ERR("queue allocation failed!\n");
2998 qdio_release_irq_memory(irq_ptr
);
3002 init_data
->cdev
->private->qdio_data
= irq_ptr
;
3004 qdio_set_state(irq_ptr
,QDIO_IRQ_STATE_INACTIVE
);
3009 static int qdio_fill_irq(struct qdio_initialize
*init_data
)
3015 struct qdio_irq
*irq_ptr
;
3017 irq_ptr
= init_data
->cdev
->private->qdio_data
;
3019 memset(irq_ptr
,0,((char*)&irq_ptr
->qdr
)-((char*)irq_ptr
));
3021 /* wipes qib.ac, required by ar7063 */
3022 memset(irq_ptr
->qdr
,0,sizeof(struct qdr
));
3024 irq_ptr
->int_parm
=init_data
->int_parm
;
3026 irq_ptr
->schid
= ccw_device_get_subchannel_id(init_data
->cdev
);
3027 irq_ptr
->no_input_qs
=init_data
->no_input_qs
;
3028 irq_ptr
->no_output_qs
=init_data
->no_output_qs
;
3030 if (init_data
->q_format
==QDIO_IQDIO_QFMT
) {
3031 irq_ptr
->is_iqdio_irq
=1;
3032 irq_ptr
->is_thinint_irq
=1;
3034 irq_ptr
->is_iqdio_irq
=0;
3035 irq_ptr
->is_thinint_irq
=hydra_thinints
;
3037 sprintf(dbf_text
,"is_i_t%1x%1x",
3038 irq_ptr
->is_iqdio_irq
,irq_ptr
->is_thinint_irq
);
3039 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3041 if (irq_ptr
->is_thinint_irq
) {
3042 irq_ptr
->dev_st_chg_ind
= qdio_get_indicator();
3043 QDIO_DBF_HEX1(0,setup
,&irq_ptr
->dev_st_chg_ind
,sizeof(void*));
3044 if (!irq_ptr
->dev_st_chg_ind
) {
3045 QDIO_PRINT_WARN("no indicator location available " \
3046 "for irq 0.%x.%x\n",
3047 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
);
3048 qdio_release_irq_memory(irq_ptr
);
3054 irq_ptr
->equeue
.cmd
=DEFAULT_ESTABLISH_QS_CMD
;
3055 irq_ptr
->equeue
.count
=DEFAULT_ESTABLISH_QS_COUNT
;
3056 irq_ptr
->aqueue
.cmd
=DEFAULT_ACTIVATE_QS_CMD
;
3057 irq_ptr
->aqueue
.count
=DEFAULT_ACTIVATE_QS_COUNT
;
3059 qdio_fill_qs(irq_ptr
, init_data
->cdev
,
3060 init_data
->no_input_qs
,
3061 init_data
->no_output_qs
,
3062 init_data
->input_handler
,
3063 init_data
->output_handler
,init_data
->int_parm
,
3064 init_data
->q_format
,init_data
->flags
,
3065 init_data
->input_sbal_addr_array
,
3066 init_data
->output_sbal_addr_array
);
3068 if (!try_module_get(THIS_MODULE
)) {
3069 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3070 qdio_release_irq_memory(irq_ptr
);
3074 qdio_fill_thresholds(irq_ptr
,init_data
->no_input_qs
,
3075 init_data
->no_output_qs
,
3076 init_data
->min_input_threshold
,
3077 init_data
->max_input_threshold
,
3078 init_data
->min_output_threshold
,
3079 init_data
->max_output_threshold
);
3082 irq_ptr
->qdr
->qfmt
=init_data
->q_format
;
3083 irq_ptr
->qdr
->iqdcnt
=init_data
->no_input_qs
;
3084 irq_ptr
->qdr
->oqdcnt
=init_data
->no_output_qs
;
3085 irq_ptr
->qdr
->iqdsz
=sizeof(struct qdesfmt0
)/4; /* size in words */
3086 irq_ptr
->qdr
->oqdsz
=sizeof(struct qdesfmt0
)/4;
3088 irq_ptr
->qdr
->qiba
=(unsigned long)&irq_ptr
->qib
;
3089 irq_ptr
->qdr
->qkey
=QDIO_STORAGE_KEY
;
3092 irq_ptr
->is_qebsm
= is_passthrough
;
3093 if (irq_ptr
->is_qebsm
)
3094 irq_ptr
->qib
.rflags
|= QIB_RFLAGS_ENABLE_QEBSM
;
3096 irq_ptr
->qib
.qfmt
=init_data
->q_format
;
3097 if (init_data
->no_input_qs
)
3098 irq_ptr
->qib
.isliba
=(unsigned long)(irq_ptr
->input_qs
[0]->slib
);
3099 if (init_data
->no_output_qs
)
3100 irq_ptr
->qib
.osliba
=(unsigned long)(irq_ptr
->output_qs
[0]->slib
);
3101 memcpy(irq_ptr
->qib
.ebcnam
,init_data
->adapter_name
,8);
3103 qdio_set_impl_params(irq_ptr
,init_data
->qib_param_field_format
,
3104 init_data
->qib_param_field
,
3105 init_data
->no_input_qs
,
3106 init_data
->no_output_qs
,
3107 init_data
->input_slib_elements
,
3108 init_data
->output_slib_elements
);
3110 /* first input descriptors, then output descriptors */
3111 is_iqdio
= (init_data
->q_format
== QDIO_IQDIO_QFMT
) ? 1 : 0;
3112 for (i
=0;i
<init_data
->no_input_qs
;i
++)
3113 qdio_allocate_fill_input_desc(irq_ptr
, i
, is_iqdio
);
3115 for (i
=0;i
<init_data
->no_output_qs
;i
++)
3116 qdio_allocate_fill_output_desc(irq_ptr
, i
,
3117 init_data
->no_input_qs
,
3120 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3122 /* get qdio commands */
3123 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_EQUEUE
);
3125 QDIO_DBF_TEXT2(1,setup
,"no eq");
3126 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3127 "Trying to use default.\n");
3129 irq_ptr
->equeue
= *ciw
;
3130 ciw
= ccw_device_get_ciw(init_data
->cdev
, CIW_TYPE_AQUEUE
);
3132 QDIO_DBF_TEXT2(1,setup
,"no aq");
3133 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3134 "Trying to use default.\n");
3136 irq_ptr
->aqueue
= *ciw
;
3138 /* Set new interrupt handler. */
3139 irq_ptr
->original_int_handler
= init_data
->cdev
->handler
;
3140 init_data
->cdev
->handler
= qdio_handler
;
3146 qdio_establish(struct qdio_initialize
*init_data
)
3148 struct qdio_irq
*irq_ptr
;
3149 unsigned long saveflags
;
3150 int result
, result2
;
3151 struct ccw_device
*cdev
;
3154 cdev
=init_data
->cdev
;
3155 irq_ptr
= cdev
->private->qdio_data
;
3159 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3162 down(&irq_ptr
->setting_up_sema
);
3164 qdio_fill_irq(init_data
);
3166 /* the thinint CHSC stuff */
3167 if (irq_ptr
->is_thinint_irq
) {
3169 result
= tiqdio_set_subchannel_ind(irq_ptr
,0);
3171 up(&irq_ptr
->setting_up_sema
);
3172 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3175 tiqdio_set_delay_target(irq_ptr
,TIQDIO_DELAY_TARGET
);
3178 sprintf(dbf_text
,"qest%4x",cdev
->private->schid
.sch_no
);
3179 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3180 QDIO_DBF_TEXT0(0,trace
,dbf_text
);
3183 irq_ptr
->ccw
.cmd_code
=irq_ptr
->equeue
.cmd
;
3184 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3185 irq_ptr
->ccw
.count
=irq_ptr
->equeue
.count
;
3186 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(irq_ptr
->qdr
);
3188 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3190 ccw_device_set_options_mask(cdev
, 0);
3191 result
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3192 QDIO_DOING_ESTABLISH
,0, 0,
3193 QDIO_ESTABLISH_TIMEOUT
);
3195 result2
=ccw_device_start_timeout(cdev
,&irq_ptr
->ccw
,
3196 QDIO_DOING_ESTABLISH
,0,0,
3197 QDIO_ESTABLISH_TIMEOUT
);
3198 sprintf(dbf_text
,"eq:io%4x",result
);
3199 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3201 sprintf(dbf_text
,"eq:io%4x",result
);
3202 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3204 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3205 "returned %i, next try returned %i\n",
3206 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3210 ccw_device_set_timeout(cdev
, 0);
3213 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3216 up(&irq_ptr
->setting_up_sema
);
3217 qdio_shutdown(cdev
,QDIO_FLAG_CLEANUP_USING_CLEAR
);
3221 /* Timeout is cared for already by using ccw_device_start_timeout(). */
3222 wait_event_interruptible(cdev
->private->wait_q
,
3223 irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
||
3224 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
);
3226 if (irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
)
3229 up(&irq_ptr
->setting_up_sema
);
3230 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3234 qdio_get_ssqd_information(irq_ptr
);
3235 /* if this gets set once, we're running under VM and can omit SVSes */
3236 if (irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_NECESSARY
)
3239 sprintf(dbf_text
,"qdioac%2x",irq_ptr
->qdioac
);
3240 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3242 sprintf(dbf_text
,"qib ac%2x",irq_ptr
->qib
.ac
);
3243 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3245 irq_ptr
->hydra_gives_outbound_pcis
=
3246 irq_ptr
->qib
.ac
&QIB_AC_OUTBOUND_PCI_SUPPORTED
;
3247 irq_ptr
->sync_done_on_outb_pcis
=
3248 irq_ptr
->qdioac
&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS
;
3250 qdio_initialize_set_siga_flags_input(irq_ptr
);
3251 qdio_initialize_set_siga_flags_output(irq_ptr
);
3253 up(&irq_ptr
->setting_up_sema
);
3260 qdio_activate(struct ccw_device
*cdev
, int flags
)
3262 struct qdio_irq
*irq_ptr
;
3263 int i
,result
=0,result2
;
3264 unsigned long saveflags
;
3265 char dbf_text
[20]; /* see qdio_initialize */
3267 irq_ptr
= cdev
->private->qdio_data
;
3271 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
3274 down(&irq_ptr
->setting_up_sema
);
3275 if (irq_ptr
->state
==QDIO_IRQ_STATE_INACTIVE
) {
3280 sprintf(dbf_text
,"qact%4x", irq_ptr
->schid
.sch_no
);
3281 QDIO_DBF_TEXT2(0,setup
,dbf_text
);
3282 QDIO_DBF_TEXT2(0,trace
,dbf_text
);
3285 irq_ptr
->ccw
.cmd_code
=irq_ptr
->aqueue
.cmd
;
3286 irq_ptr
->ccw
.flags
=CCW_FLAG_SLI
;
3287 irq_ptr
->ccw
.count
=irq_ptr
->aqueue
.count
;
3288 irq_ptr
->ccw
.cda
=QDIO_GET_ADDR(0);
3290 spin_lock_irqsave(get_ccwdev_lock(cdev
),saveflags
);
3292 ccw_device_set_timeout(cdev
, 0);
3293 ccw_device_set_options(cdev
, CCWDEV_REPORT_ALL
);
3294 result
=ccw_device_start(cdev
,&irq_ptr
->ccw
,QDIO_DOING_ACTIVATE
,
3295 0, DOIO_DENY_PREFETCH
);
3297 result2
=ccw_device_start(cdev
,&irq_ptr
->ccw
,
3298 QDIO_DOING_ACTIVATE
,0,0);
3299 sprintf(dbf_text
,"aq:io%4x",result
);
3300 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3302 sprintf(dbf_text
,"aq:io%4x",result
);
3303 QDIO_DBF_TEXT2(1,setup
,dbf_text
);
3305 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3306 "returned %i, next try returned %i\n",
3307 irq_ptr
->schid
.ssid
, irq_ptr
->schid
.sch_no
,
3312 spin_unlock_irqrestore(get_ccwdev_lock(cdev
),saveflags
);
3316 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3317 if (irq_ptr
->is_thinint_irq
) {
3319 * that way we know, that, if we will get interrupted
3320 * by tiqdio_inbound_processing, qdio_unmark_q will
3323 qdio_reserve_q(irq_ptr
->input_qs
[i
]);
3324 qdio_mark_tiq(irq_ptr
->input_qs
[i
]);
3325 qdio_release_q(irq_ptr
->input_qs
[i
]);
3329 if (flags
&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
) {
3330 for (i
=0;i
<irq_ptr
->no_input_qs
;i
++) {
3331 irq_ptr
->input_qs
[i
]->is_input_q
|=
3332 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT
;
3336 wait_event_interruptible_timeout(cdev
->private->wait_q
,
3338 QDIO_IRQ_STATE_STOPPED
) ||
3340 QDIO_IRQ_STATE_ERR
)),
3341 QDIO_ACTIVATE_TIMEOUT
);
3343 switch (irq_ptr
->state
) {
3344 case QDIO_IRQ_STATE_STOPPED
:
3345 case QDIO_IRQ_STATE_ERR
:
3346 up(&irq_ptr
->setting_up_sema
);
3347 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
3348 down(&irq_ptr
->setting_up_sema
);
3352 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ACTIVE
);
3356 up(&irq_ptr
->setting_up_sema
);
3361 /* buffers filled forwards again to make Rick happy */
3363 qdio_do_qdio_fill_input(struct qdio_q
*q
, unsigned int qidx
,
3364 unsigned int count
, struct qdio_buffer
*buffers
)
3366 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3369 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3370 if (irq
->is_qebsm
) {
3372 tmp
= 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
;
3393 qidx
&= (QDIO_MAX_BUFFERS_PER_Q
- 1);
3394 if (irq
->is_qebsm
) {
3396 tmp
= set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3404 set_slsb(q
, &qidx
, SLSB_CU_OUTPUT_PRIMED
, &count
);
3407 qidx
= (qidx
+ 1) & (QDIO_MAX_BUFFERS_PER_Q
- 1);
3412 do_qdio_handle_inbound(struct qdio_q
*q
, unsigned int callflags
,
3413 unsigned int qidx
, unsigned int count
,
3414 struct qdio_buffer
*buffers
)
3418 /* This is the inbound handling of queues */
3419 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3421 qdio_do_qdio_fill_input(q
,qidx
,count
,buffers
);
3423 if ((used_elements
+count
==QDIO_MAX_BUFFERS_PER_Q
)&&
3424 (callflags
&QDIO_FLAG_UNDER_INTERRUPT
))
3425 atomic_xchg(&q
->polling
,0);
3429 if (callflags
&QDIO_FLAG_DONT_SIGA
)
3434 result
=qdio_siga_input(q
);
3437 q
->error_status_flags
|=
3438 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR
;
3439 q
->error_status_flags
|=QDIO_STATUS_LOOK_FOR_ERROR
;
3440 q
->siga_error
=result
;
3448 do_qdio_handle_outbound(struct qdio_q
*q
, unsigned int callflags
,
3449 unsigned int qidx
, unsigned int count
,
3450 struct qdio_buffer
*buffers
)
3453 unsigned int cnt
, start_buf
;
3454 unsigned char state
= 0;
3455 struct qdio_irq
*irq
= (struct qdio_irq
*) q
->irq_ptr
;
3457 /* This is the outbound handling of queues */
3458 qdio_do_qdio_fill_output(q
,qidx
,count
,buffers
);
3460 used_elements
=atomic_add_return(count
, &q
->number_of_buffers_used
) - count
;
3462 if (callflags
&QDIO_FLAG_DONT_SIGA
) {
3463 qdio_perf_stat_inc(&perf_stats
.outbound_cnt
);
3466 if (callflags
& QDIO_FLAG_PCI_OUT
)
3470 if (q
->is_iqdio_q
) {
3471 /* one siga for every sbal */
3473 qdio_kick_outbound_q(q
);
3475 __qdio_outbound_processing(q
);
3477 /* under VM, we do a SIGA sync unconditionally */
3481 * w/o shadow queues (else branch of
3482 * SYNC_MEMORY :-/ ), we try to
3483 * fast-requeue buffers
3485 if (irq
->is_qebsm
) {
3487 start_buf
= ((qidx
+QDIO_MAX_BUFFERS_PER_Q
-1) &
3488 (QDIO_MAX_BUFFERS_PER_Q
-1));
3489 qdio_do_eqbs(q
, &state
, &start_buf
, &cnt
);
3491 state
= q
->slsb
.acc
.val
[(qidx
+QDIO_MAX_BUFFERS_PER_Q
-1)
3492 &(QDIO_MAX_BUFFERS_PER_Q
-1) ];
3493 if (state
!= SLSB_CU_OUTPUT_PRIMED
) {
3494 qdio_kick_outbound_q(q
);
3496 QDIO_DBF_TEXT3(0,trace
, "fast-req");
3497 qdio_perf_stat_inc(&perf_stats
.fast_reqs
);
3501 * only marking the q could take too long,
3502 * the upper layer module could do a lot of
3503 * traffic in that time
3505 __qdio_outbound_processing(q
);
3508 qdio_perf_stat_inc(&perf_stats
.outbound_cnt
);
3511 /* count must be 1 in iqdio */
3513 do_QDIO(struct ccw_device
*cdev
,unsigned int callflags
,
3514 unsigned int queue_number
, unsigned int qidx
,
3515 unsigned int count
,struct qdio_buffer
*buffers
)
3517 struct qdio_irq
*irq_ptr
;
3518 #ifdef CONFIG_QDIO_DEBUG
3521 sprintf(dbf_text
,"doQD%04x",cdev
->private->schid
.sch_no
);
3522 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3523 #endif /* CONFIG_QDIO_DEBUG */
3525 if ( (qidx
>QDIO_MAX_BUFFERS_PER_Q
) ||
3526 (count
>QDIO_MAX_BUFFERS_PER_Q
) ||
3527 (queue_number
>QDIO_MAX_QUEUES_PER_IRQ
) )
3533 irq_ptr
= cdev
->private->qdio_data
;
3537 #ifdef CONFIG_QDIO_DEBUG
3538 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3539 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->input_qs
[queue_number
],
3542 QDIO_DBF_HEX3(0,trace
,&irq_ptr
->output_qs
[queue_number
],
3544 sprintf(dbf_text
,"flag%04x",callflags
);
3545 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3546 sprintf(dbf_text
,"qi%02xct%02x",qidx
,count
);
3547 QDIO_DBF_TEXT3(0,trace
,dbf_text
);
3548 #endif /* CONFIG_QDIO_DEBUG */
3550 if (irq_ptr
->state
!=QDIO_IRQ_STATE_ACTIVE
)
3553 if (callflags
&QDIO_FLAG_SYNC_INPUT
)
3554 do_qdio_handle_inbound(irq_ptr
->input_qs
[queue_number
],
3555 callflags
, qidx
, count
, buffers
);
3556 else if (callflags
&QDIO_FLAG_SYNC_OUTPUT
)
3557 do_qdio_handle_outbound(irq_ptr
->output_qs
[queue_number
],
3558 callflags
, qidx
, count
, buffers
);
3560 QDIO_DBF_TEXT3(1,trace
,"doQD:inv");
3567 qdio_perf_procfile_read(char *buffer
, char **buffer_location
, off_t offset
,
3568 int buffer_length
, int *eof
, void *data
)
3572 /* we are always called with buffer_length=4k, so we all
3573 deliver on the first read */
3577 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3579 _OUTP_IT("Number of tasklet runs (total) : %li\n",
3580 (long)atomic64_read(&perf_stats
.tl_runs
));
3581 _OUTP_IT("Inbound tasklet runs tried/retried : %li/%li\n",
3582 (long)atomic64_read(&perf_stats
.inbound_tl_runs
),
3583 (long)atomic64_read(&perf_stats
.inbound_tl_runs_resched
));
3584 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %li/%li\n",
3585 (long)atomic64_read(&perf_stats
.inbound_thin_tl_runs
),
3586 (long)atomic64_read(&perf_stats
.inbound_thin_tl_runs_resched
));
3587 _OUTP_IT("Outbound tasklet runs tried/retried : %li/%li\n",
3588 (long)atomic64_read(&perf_stats
.outbound_tl_runs
),
3589 (long)atomic64_read(&perf_stats
.outbound_tl_runs_resched
));
3591 _OUTP_IT("Number of SIGA sync's issued : %li\n",
3592 (long)atomic64_read(&perf_stats
.siga_syncs
));
3593 _OUTP_IT("Number of SIGA in's issued : %li\n",
3594 (long)atomic64_read(&perf_stats
.siga_ins
));
3595 _OUTP_IT("Number of SIGA out's issued : %li\n",
3596 (long)atomic64_read(&perf_stats
.siga_outs
));
3597 _OUTP_IT("Number of PCIs caught : %li\n",
3598 (long)atomic64_read(&perf_stats
.pcis
));
3599 _OUTP_IT("Number of adapter interrupts caught : %li\n",
3600 (long)atomic64_read(&perf_stats
.thinints
));
3601 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %li\n",
3602 (long)atomic64_read(&perf_stats
.fast_reqs
));
3604 _OUTP_IT("Number of inbound transfers : %li\n",
3605 (long)atomic64_read(&perf_stats
.inbound_cnt
));
3606 _OUTP_IT("Number of do_QDIOs outbound : %li\n",
3607 (long)atomic64_read(&perf_stats
.outbound_cnt
));
3608 #else /* CONFIG_64BIT */
3609 _OUTP_IT("Number of tasklet runs (total) : %i\n",
3610 atomic_read(&perf_stats
.tl_runs
));
3611 _OUTP_IT("Inbound tasklet runs tried/retried : %i/%i\n",
3612 atomic_read(&perf_stats
.inbound_tl_runs
),
3613 atomic_read(&perf_stats
.inbound_tl_runs_resched
));
3614 _OUTP_IT("Inbound-thin tasklet runs tried/retried : %i/%i\n",
3615 atomic_read(&perf_stats
.inbound_thin_tl_runs
),
3616 atomic_read(&perf_stats
.inbound_thin_tl_runs_resched
));
3617 _OUTP_IT("Outbound tasklet runs tried/retried : %i/%i\n",
3618 atomic_read(&perf_stats
.outbound_tl_runs
),
3619 atomic_read(&perf_stats
.outbound_tl_runs_resched
));
3621 _OUTP_IT("Number of SIGA sync's issued : %i\n",
3622 atomic_read(&perf_stats
.siga_syncs
));
3623 _OUTP_IT("Number of SIGA in's issued : %i\n",
3624 atomic_read(&perf_stats
.siga_ins
));
3625 _OUTP_IT("Number of SIGA out's issued : %i\n",
3626 atomic_read(&perf_stats
.siga_outs
));
3627 _OUTP_IT("Number of PCIs caught : %i\n",
3628 atomic_read(&perf_stats
.pcis
));
3629 _OUTP_IT("Number of adapter interrupts caught : %i\n",
3630 atomic_read(&perf_stats
.thinints
));
3631 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %i\n",
3632 atomic_read(&perf_stats
.fast_reqs
));
3634 _OUTP_IT("Number of inbound transfers : %i\n",
3635 atomic_read(&perf_stats
.inbound_cnt
));
3636 _OUTP_IT("Number of do_QDIOs outbound : %i\n",
3637 atomic_read(&perf_stats
.outbound_cnt
));
3638 #endif /* CONFIG_64BIT */
3644 static struct proc_dir_entry
*qdio_perf_proc_file
;
3647 qdio_add_procfs_entry(void)
3649 proc_perf_file_registration
=0;
3650 qdio_perf_proc_file
=create_proc_entry(QDIO_PERF
,
3651 S_IFREG
|0444,&proc_root
);
3652 if (qdio_perf_proc_file
) {
3653 qdio_perf_proc_file
->read_proc
=&qdio_perf_procfile_read
;
3654 } else proc_perf_file_registration
=-1;
3656 if (proc_perf_file_registration
)
3657 QDIO_PRINT_WARN("was not able to register perf. " \
3658 "proc-file (%i).\n",
3659 proc_perf_file_registration
);
3663 qdio_remove_procfs_entry(void)
3665 if (!proc_perf_file_registration
) /* means if it went ok earlier */
3666 remove_proc_entry(QDIO_PERF
,&proc_root
);
3670 * attributes in sysfs
3671 *****************************************************************************/
3674 qdio_performance_stats_show(struct bus_type
*bus
, char *buf
)
3676 return sprintf(buf
, "%i\n", qdio_performance_stats
? 1 : 0);
3680 qdio_performance_stats_store(struct bus_type
*bus
, const char *buf
, size_t count
)
3685 i
= simple_strtoul(buf
, &tmp
, 16);
3686 if ((i
== 0) || (i
== 1)) {
3687 if (i
== qdio_performance_stats
)
3689 qdio_performance_stats
= i
;
3691 /* reset perf. stat. info */
3693 atomic64_set(&perf_stats
.tl_runs
, 0);
3694 atomic64_set(&perf_stats
.outbound_tl_runs
, 0);
3695 atomic64_set(&perf_stats
.inbound_tl_runs
, 0);
3696 atomic64_set(&perf_stats
.inbound_tl_runs_resched
, 0);
3697 atomic64_set(&perf_stats
.inbound_thin_tl_runs
, 0);
3698 atomic64_set(&perf_stats
.inbound_thin_tl_runs_resched
,
3700 atomic64_set(&perf_stats
.siga_outs
, 0);
3701 atomic64_set(&perf_stats
.siga_ins
, 0);
3702 atomic64_set(&perf_stats
.siga_syncs
, 0);
3703 atomic64_set(&perf_stats
.pcis
, 0);
3704 atomic64_set(&perf_stats
.thinints
, 0);
3705 atomic64_set(&perf_stats
.fast_reqs
, 0);
3706 atomic64_set(&perf_stats
.outbound_cnt
, 0);
3707 atomic64_set(&perf_stats
.inbound_cnt
, 0);
3708 #else /* CONFIG_64BIT */
3709 atomic_set(&perf_stats
.tl_runs
, 0);
3710 atomic_set(&perf_stats
.outbound_tl_runs
, 0);
3711 atomic_set(&perf_stats
.inbound_tl_runs
, 0);
3712 atomic_set(&perf_stats
.inbound_tl_runs_resched
, 0);
3713 atomic_set(&perf_stats
.inbound_thin_tl_runs
, 0);
3714 atomic_set(&perf_stats
.inbound_thin_tl_runs_resched
, 0);
3715 atomic_set(&perf_stats
.siga_outs
, 0);
3716 atomic_set(&perf_stats
.siga_ins
, 0);
3717 atomic_set(&perf_stats
.siga_syncs
, 0);
3718 atomic_set(&perf_stats
.pcis
, 0);
3719 atomic_set(&perf_stats
.thinints
, 0);
3720 atomic_set(&perf_stats
.fast_reqs
, 0);
3721 atomic_set(&perf_stats
.outbound_cnt
, 0);
3722 atomic_set(&perf_stats
.inbound_cnt
, 0);
3723 #endif /* CONFIG_64BIT */
3726 QDIO_PRINT_WARN("QDIO performance_stats: write 0 or 1 to this file!\n");
3732 static BUS_ATTR(qdio_performance_stats
, 0644, qdio_performance_stats_show
,
3733 qdio_performance_stats_store
);
3736 tiqdio_register_thinints(void)
3739 register_thinint_result
=
3740 s390_register_adapter_interrupt(&tiqdio_thinint_handler
);
3741 if (register_thinint_result
) {
3742 sprintf(dbf_text
,"regthn%x",(register_thinint_result
&0xff));
3743 QDIO_DBF_TEXT0(0,setup
,dbf_text
);
3744 QDIO_PRINT_ERR("failed to register adapter handler " \
3745 "(rc=%i).\nAdapter interrupts might " \
3746 "not work. Continuing.\n",
3747 register_thinint_result
);
3752 tiqdio_unregister_thinints(void)
3754 if (!register_thinint_result
)
3755 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler
);
3759 qdio_get_qdio_memory(void)
3762 indicator_used
[0]=1;
3764 for (i
=1;i
<INDICATORS_PER_CACHELINE
;i
++)
3765 indicator_used
[i
]=0;
3766 indicators
= kzalloc(sizeof(__u32
)*(INDICATORS_PER_CACHELINE
),
3774 qdio_release_qdio_memory(void)
3781 qdio_unregister_dbf_views(void)
3784 debug_unregister(qdio_dbf_setup
);
3786 debug_unregister(qdio_dbf_sbal
);
3788 debug_unregister(qdio_dbf_sense
);
3790 debug_unregister(qdio_dbf_trace
);
3791 #ifdef CONFIG_QDIO_DEBUG
3792 if (qdio_dbf_slsb_out
)
3793 debug_unregister(qdio_dbf_slsb_out
);
3794 if (qdio_dbf_slsb_in
)
3795 debug_unregister(qdio_dbf_slsb_in
);
3796 #endif /* CONFIG_QDIO_DEBUG */
3800 qdio_register_dbf_views(void)
3802 qdio_dbf_setup
=debug_register(QDIO_DBF_SETUP_NAME
,
3803 QDIO_DBF_SETUP_PAGES
,
3804 QDIO_DBF_SETUP_NR_AREAS
,
3805 QDIO_DBF_SETUP_LEN
);
3806 if (!qdio_dbf_setup
)
3808 debug_register_view(qdio_dbf_setup
,&debug_hex_ascii_view
);
3809 debug_set_level(qdio_dbf_setup
,QDIO_DBF_SETUP_LEVEL
);
3811 qdio_dbf_sbal
=debug_register(QDIO_DBF_SBAL_NAME
,
3812 QDIO_DBF_SBAL_PAGES
,
3813 QDIO_DBF_SBAL_NR_AREAS
,
3818 debug_register_view(qdio_dbf_sbal
,&debug_hex_ascii_view
);
3819 debug_set_level(qdio_dbf_sbal
,QDIO_DBF_SBAL_LEVEL
);
3821 qdio_dbf_sense
=debug_register(QDIO_DBF_SENSE_NAME
,
3822 QDIO_DBF_SENSE_PAGES
,
3823 QDIO_DBF_SENSE_NR_AREAS
,
3824 QDIO_DBF_SENSE_LEN
);
3825 if (!qdio_dbf_sense
)
3828 debug_register_view(qdio_dbf_sense
,&debug_hex_ascii_view
);
3829 debug_set_level(qdio_dbf_sense
,QDIO_DBF_SENSE_LEVEL
);
3831 qdio_dbf_trace
=debug_register(QDIO_DBF_TRACE_NAME
,
3832 QDIO_DBF_TRACE_PAGES
,
3833 QDIO_DBF_TRACE_NR_AREAS
,
3834 QDIO_DBF_TRACE_LEN
);
3835 if (!qdio_dbf_trace
)
3838 debug_register_view(qdio_dbf_trace
,&debug_hex_ascii_view
);
3839 debug_set_level(qdio_dbf_trace
,QDIO_DBF_TRACE_LEVEL
);
3841 #ifdef CONFIG_QDIO_DEBUG
3842 qdio_dbf_slsb_out
=debug_register(QDIO_DBF_SLSB_OUT_NAME
,
3843 QDIO_DBF_SLSB_OUT_PAGES
,
3844 QDIO_DBF_SLSB_OUT_NR_AREAS
,
3845 QDIO_DBF_SLSB_OUT_LEN
);
3846 if (!qdio_dbf_slsb_out
)
3848 debug_register_view(qdio_dbf_slsb_out
,&debug_hex_ascii_view
);
3849 debug_set_level(qdio_dbf_slsb_out
,QDIO_DBF_SLSB_OUT_LEVEL
);
3851 qdio_dbf_slsb_in
=debug_register(QDIO_DBF_SLSB_IN_NAME
,
3852 QDIO_DBF_SLSB_IN_PAGES
,
3853 QDIO_DBF_SLSB_IN_NR_AREAS
,
3854 QDIO_DBF_SLSB_IN_LEN
);
3855 if (!qdio_dbf_slsb_in
)
3857 debug_register_view(qdio_dbf_slsb_in
,&debug_hex_ascii_view
);
3858 debug_set_level(qdio_dbf_slsb_in
,QDIO_DBF_SLSB_IN_LEVEL
);
3859 #endif /* CONFIG_QDIO_DEBUG */
3862 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3863 qdio_unregister_dbf_views();
3867 static void *qdio_mempool_alloc(gfp_t gfp_mask
, void *size
)
3869 return (void *) get_zeroed_page(gfp_mask
|GFP_DMA
);
3872 static void qdio_mempool_free(void *element
, void *size
)
3874 free_page((unsigned long) element
);
3883 printk("qdio: loading %s\n",version
);
3885 res
=qdio_get_qdio_memory();
3889 qdio_q_cache
= kmem_cache_create("qdio_q", sizeof(struct qdio_q
),
3891 if (!qdio_q_cache
) {
3892 qdio_release_qdio_memory();
3896 res
= qdio_register_dbf_views();
3898 kmem_cache_destroy(qdio_q_cache
);
3899 qdio_release_qdio_memory();
3903 QDIO_DBF_TEXT0(0,setup
,"initQDIO");
3904 res
= bus_create_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3906 memset((void*)&perf_stats
,0,sizeof(perf_stats
));
3907 QDIO_DBF_TEXT0(0,setup
,"perfstat");
3909 QDIO_DBF_HEX0(0,setup
,&ptr
,sizeof(void*));
3911 qdio_add_procfs_entry();
3913 qdio_mempool_scssc
= mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS
,
3915 qdio_mempool_free
, NULL
);
3917 if (tiqdio_check_chsc_availability())
3918 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3920 tiqdio_register_thinints();
3928 tiqdio_unregister_thinints();
3929 qdio_remove_procfs_entry();
3930 qdio_release_qdio_memory();
3931 qdio_unregister_dbf_views();
3932 mempool_destroy(qdio_mempool_scssc
);
3933 kmem_cache_destroy(qdio_q_cache
);
3934 bus_remove_file(&ccw_bus_type
, &bus_attr_qdio_performance_stats
);
3935 printk("qdio: %s: module removed\n",version
);
3938 module_init(init_QDIO
);
3939 module_exit(cleanup_QDIO
);
3941 EXPORT_SYMBOL(qdio_allocate
);
3942 EXPORT_SYMBOL(qdio_establish
);
3943 EXPORT_SYMBOL(qdio_initialize
);
3944 EXPORT_SYMBOL(qdio_activate
);
3945 EXPORT_SYMBOL(do_QDIO
);
3946 EXPORT_SYMBOL(qdio_shutdown
);
3947 EXPORT_SYMBOL(qdio_free
);
3948 EXPORT_SYMBOL(qdio_cleanup
);
3949 EXPORT_SYMBOL(qdio_synchronize
);