2 * linux/drivers/s390/cio/qdio_main.c
4 * Linux for s390 qdio support, buffer handling, qdio API and module support.
6 * Copyright 2000,2008 IBM Corp.
7 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
8 * Jan Glauber <jang@linux.vnet.ibm.com>
9 * 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
11 #include <linux/module.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/timer.h>
15 #include <linux/delay.h>
16 #include <asm/atomic.h>
17 #include <asm/debug.h>
24 #include "qdio_debug.h"
25 #include "qdio_perf.h"
27 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>,"\
28 "Jan Glauber <jang@linux.vnet.ibm.com>");
29 MODULE_DESCRIPTION("QDIO base support");
30 MODULE_LICENSE("GPL");
32 static inline int do_siga_sync(struct subchannel_id schid
,
33 unsigned int out_mask
, unsigned int in_mask
)
35 register unsigned long __fc
asm ("0") = 2;
36 register struct subchannel_id __schid
asm ("1") = schid
;
37 register unsigned long out
asm ("2") = out_mask
;
38 register unsigned long in
asm ("3") = in_mask
;
46 : "d" (__fc
), "d" (__schid
), "d" (out
), "d" (in
) : "cc");
50 static inline int do_siga_input(struct subchannel_id schid
, unsigned int mask
)
52 register unsigned long __fc
asm ("0") = 1;
53 register struct subchannel_id __schid
asm ("1") = schid
;
54 register unsigned long __mask
asm ("2") = mask
;
62 : "d" (__fc
), "d" (__schid
), "d" (__mask
) : "cc", "memory");
67 * do_siga_output - perform SIGA-w/wt function
68 * @schid: subchannel id or in case of QEBSM the subchannel token
69 * @mask: which output queues to process
70 * @bb: busy bit indicator, set only if SIGA-w/wt could not access a buffer
71 * @fc: function code to perform
73 * Returns cc or QDIO_ERROR_SIGA_ACCESS_EXCEPTION.
74 * Note: For IQDC unicast queues only the highest priority queue is processed.
76 static inline int do_siga_output(unsigned long schid
, unsigned long mask
,
77 unsigned int *bb
, unsigned int fc
)
79 register unsigned long __fc
asm("0") = fc
;
80 register unsigned long __schid
asm("1") = schid
;
81 register unsigned long __mask
asm("2") = mask
;
82 int cc
= QDIO_ERROR_SIGA_ACCESS_EXCEPTION
;
90 : "+d" (cc
), "+d" (__fc
), "+d" (__schid
), "+d" (__mask
)
92 *bb
= ((unsigned int) __fc
) >> 31;
96 static inline int qdio_check_ccq(struct qdio_q
*q
, unsigned int ccq
)
98 /* all done or next buffer state different */
99 if (ccq
== 0 || ccq
== 32)
101 /* not all buffers processed */
102 if (ccq
== 96 || ccq
== 97)
104 /* notify devices immediately */
105 DBF_ERROR("%4x ccq:%3d", SCH_NO(q
), ccq
);
110 * qdio_do_eqbs - extract buffer states for QEBSM
111 * @q: queue to manipulate
112 * @state: state of the extracted buffers
113 * @start: buffer number to start at
114 * @count: count of buffers to examine
115 * @auto_ack: automatically acknowledge buffers
117 * Returns the number of successfully extracted equal buffer states.
118 * Stops processing if a state is different from the last buffers state.
120 static int qdio_do_eqbs(struct qdio_q
*q
, unsigned char *state
,
121 int start
, int count
, int auto_ack
)
123 unsigned int ccq
= 0;
124 int tmp_count
= count
, tmp_start
= start
;
128 BUG_ON(!q
->irq_ptr
->sch_token
);
129 qdio_perf_stat_inc(&perf_stats
.debug_eqbs_all
);
132 nr
+= q
->irq_ptr
->nr_input_qs
;
134 ccq
= do_eqbs(q
->irq_ptr
->sch_token
, state
, nr
, &tmp_start
, &tmp_count
,
136 rc
= qdio_check_ccq(q
, ccq
);
138 /* At least one buffer was processed, return and extract the remaining
141 if ((ccq
== 96) && (count
!= tmp_count
)) {
142 qdio_perf_stat_inc(&perf_stats
.debug_eqbs_incomplete
);
143 return (count
- tmp_count
);
147 DBF_DEV_EVENT(DBF_WARN
, q
->irq_ptr
, "EQBS again:%2d", ccq
);
152 DBF_ERROR("%4x EQBS ERROR", SCH_NO(q
));
153 DBF_ERROR("%3d%3d%2d", count
, tmp_count
, nr
);
154 q
->handler(q
->irq_ptr
->cdev
,
155 QDIO_ERROR_ACTIVATE_CHECK_CONDITION
,
156 0, -1, -1, q
->irq_ptr
->int_parm
);
159 return count
- tmp_count
;
163 * qdio_do_sqbs - set buffer states for QEBSM
164 * @q: queue to manipulate
165 * @state: new state of the buffers
166 * @start: first buffer number to change
167 * @count: how many buffers to change
169 * Returns the number of successfully changed buffers.
170 * Does retrying until the specified count of buffer states is set or an
173 static int qdio_do_sqbs(struct qdio_q
*q
, unsigned char state
, int start
,
176 unsigned int ccq
= 0;
177 int tmp_count
= count
, tmp_start
= start
;
184 BUG_ON(!q
->irq_ptr
->sch_token
);
185 qdio_perf_stat_inc(&perf_stats
.debug_sqbs_all
);
188 nr
+= q
->irq_ptr
->nr_input_qs
;
190 ccq
= do_sqbs(q
->irq_ptr
->sch_token
, state
, nr
, &tmp_start
, &tmp_count
);
191 rc
= qdio_check_ccq(q
, ccq
);
193 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "SQBS again:%2d", ccq
);
194 qdio_perf_stat_inc(&perf_stats
.debug_sqbs_incomplete
);
198 DBF_ERROR("%4x SQBS ERROR", SCH_NO(q
));
199 DBF_ERROR("%3d%3d%2d", count
, tmp_count
, nr
);
200 q
->handler(q
->irq_ptr
->cdev
,
201 QDIO_ERROR_ACTIVATE_CHECK_CONDITION
,
202 0, -1, -1, q
->irq_ptr
->int_parm
);
206 return count
- tmp_count
;
209 /* returns number of examined buffers and their common state in *state */
210 static inline int get_buf_states(struct qdio_q
*q
, unsigned int bufnr
,
211 unsigned char *state
, unsigned int count
,
214 unsigned char __state
= 0;
217 BUG_ON(bufnr
> QDIO_MAX_BUFFERS_MASK
);
218 BUG_ON(count
> QDIO_MAX_BUFFERS_PER_Q
);
221 return qdio_do_eqbs(q
, state
, bufnr
, count
, auto_ack
);
223 for (i
= 0; i
< count
; i
++) {
225 __state
= q
->slsb
.val
[bufnr
];
226 else if (q
->slsb
.val
[bufnr
] != __state
)
228 bufnr
= next_buf(bufnr
);
234 static inline int get_buf_state(struct qdio_q
*q
, unsigned int bufnr
,
235 unsigned char *state
, int auto_ack
)
237 return get_buf_states(q
, bufnr
, state
, 1, auto_ack
);
240 /* wrap-around safe setting of slsb states, returns number of changed buffers */
241 static inline int set_buf_states(struct qdio_q
*q
, int bufnr
,
242 unsigned char state
, int count
)
246 BUG_ON(bufnr
> QDIO_MAX_BUFFERS_MASK
);
247 BUG_ON(count
> QDIO_MAX_BUFFERS_PER_Q
);
250 return qdio_do_sqbs(q
, state
, bufnr
, count
);
252 for (i
= 0; i
< count
; i
++) {
253 xchg(&q
->slsb
.val
[bufnr
], state
);
254 bufnr
= next_buf(bufnr
);
259 static inline int set_buf_state(struct qdio_q
*q
, int bufnr
,
262 return set_buf_states(q
, bufnr
, state
, 1);
265 /* set slsb states to initial state */
266 void qdio_init_buf_states(struct qdio_irq
*irq_ptr
)
271 for_each_input_queue(irq_ptr
, q
, i
)
272 set_buf_states(q
, 0, SLSB_P_INPUT_NOT_INIT
,
273 QDIO_MAX_BUFFERS_PER_Q
);
274 for_each_output_queue(irq_ptr
, q
, i
)
275 set_buf_states(q
, 0, SLSB_P_OUTPUT_NOT_INIT
,
276 QDIO_MAX_BUFFERS_PER_Q
);
279 static inline int qdio_siga_sync(struct qdio_q
*q
, unsigned int output
,
284 if (!need_siga_sync(q
))
287 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "siga-s:%1d", q
->nr
);
288 qdio_perf_stat_inc(&perf_stats
.siga_sync
);
290 cc
= do_siga_sync(q
->irq_ptr
->schid
, output
, input
);
292 DBF_ERROR("%4x SIGA-S:%2d", SCH_NO(q
), cc
);
296 static inline int qdio_siga_sync_q(struct qdio_q
*q
)
299 return qdio_siga_sync(q
, 0, q
->mask
);
301 return qdio_siga_sync(q
, q
->mask
, 0);
304 static inline int qdio_siga_sync_out(struct qdio_q
*q
)
306 return qdio_siga_sync(q
, ~0U, 0);
309 static inline int qdio_siga_sync_all(struct qdio_q
*q
)
311 return qdio_siga_sync(q
, ~0U, ~0U);
314 static int qdio_siga_output(struct qdio_q
*q
, unsigned int *busy_bit
)
321 if (q
->u
.out
.use_enh_siga
)
325 schid
= q
->irq_ptr
->sch_token
;
329 schid
= *((u32
*)&q
->irq_ptr
->schid
);
332 cc
= do_siga_output(schid
, q
->mask
, busy_bit
, fc
);
334 /* hipersocket busy condition */
336 WARN_ON(queue_type(q
) != QDIO_IQDIO_QFMT
|| cc
!= 2);
339 start_time
= get_usecs();
342 if ((get_usecs() - start_time
) < QDIO_BUSY_BIT_PATIENCE
)
348 static inline int qdio_siga_input(struct qdio_q
*q
)
352 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "siga-r:%1d", q
->nr
);
353 qdio_perf_stat_inc(&perf_stats
.siga_in
);
355 cc
= do_siga_input(q
->irq_ptr
->schid
, q
->mask
);
357 DBF_ERROR("%4x SIGA-R:%2d", SCH_NO(q
), cc
);
361 static inline void qdio_sync_after_thinint(struct qdio_q
*q
)
363 if (pci_out_supported(q
)) {
364 if (need_siga_sync_thinint(q
))
365 qdio_siga_sync_all(q
);
366 else if (need_siga_sync_out_thinint(q
))
367 qdio_siga_sync_out(q
);
372 int debug_get_buf_state(struct qdio_q
*q
, unsigned int bufnr
,
373 unsigned char *state
)
376 return get_buf_states(q
, bufnr
, state
, 1, 0);
379 static inline void qdio_stop_polling(struct qdio_q
*q
)
381 if (!q
->u
.in
.polling
)
385 qdio_perf_stat_inc(&perf_stats
.debug_stop_polling
);
387 /* show the card that we are not polling anymore */
389 set_buf_states(q
, q
->u
.in
.ack_start
, SLSB_P_INPUT_NOT_INIT
,
391 q
->u
.in
.ack_count
= 0;
393 set_buf_state(q
, q
->u
.in
.ack_start
, SLSB_P_INPUT_NOT_INIT
);
396 static void announce_buffer_error(struct qdio_q
*q
, int count
)
398 q
->qdio_error
|= QDIO_ERROR_SLSB_STATE
;
400 /* special handling for no target buffer empty */
401 if ((!q
->is_input_q
&&
402 (q
->sbal
[q
->first_to_check
]->element
[15].flags
& 0xff) == 0x10)) {
403 qdio_perf_stat_inc(&perf_stats
.outbound_target_full
);
404 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "OUTFULL FTC:%02x",
409 DBF_ERROR("%4x BUF ERROR", SCH_NO(q
));
410 DBF_ERROR((q
->is_input_q
) ? "IN:%2d" : "OUT:%2d", q
->nr
);
411 DBF_ERROR("FTC:%3d C:%3d", q
->first_to_check
, count
);
412 DBF_ERROR("F14:%2x F15:%2x",
413 q
->sbal
[q
->first_to_check
]->element
[14].flags
& 0xff,
414 q
->sbal
[q
->first_to_check
]->element
[15].flags
& 0xff);
417 static inline void inbound_primed(struct qdio_q
*q
, int count
)
421 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "in prim: %02x", count
);
423 /* for QEBSM the ACK was already set by EQBS */
425 if (!q
->u
.in
.polling
) {
427 q
->u
.in
.ack_count
= count
;
428 q
->u
.in
.ack_start
= q
->first_to_check
;
432 /* delete the previous ACK's */
433 set_buf_states(q
, q
->u
.in
.ack_start
, SLSB_P_INPUT_NOT_INIT
,
435 q
->u
.in
.ack_count
= count
;
436 q
->u
.in
.ack_start
= q
->first_to_check
;
441 * ACK the newest buffer. The ACK will be removed in qdio_stop_polling
442 * or by the next inbound run.
444 new = add_buf(q
->first_to_check
, count
- 1);
445 if (q
->u
.in
.polling
) {
446 /* reset the previous ACK but first set the new one */
447 set_buf_state(q
, new, SLSB_P_INPUT_ACK
);
448 set_buf_state(q
, q
->u
.in
.ack_start
, SLSB_P_INPUT_NOT_INIT
);
451 set_buf_state(q
, new, SLSB_P_INPUT_ACK
);
454 q
->u
.in
.ack_start
= new;
458 /* need to change ALL buffers to get more interrupts */
459 set_buf_states(q
, q
->first_to_check
, SLSB_P_INPUT_NOT_INIT
, count
);
462 static int get_inbound_buffer_frontier(struct qdio_q
*q
)
468 * Don't check 128 buffers, as otherwise qdio_inbound_q_moved
471 count
= min(atomic_read(&q
->nr_buf_used
), QDIO_MAX_BUFFERS_MASK
);
472 stop
= add_buf(q
->first_to_check
, count
);
474 if (q
->first_to_check
== stop
)
478 * No siga sync here, as a PCI or we after a thin interrupt
479 * already sync'ed the queues.
481 count
= get_buf_states(q
, q
->first_to_check
, &state
, count
, 1);
486 case SLSB_P_INPUT_PRIMED
:
487 inbound_primed(q
, count
);
488 q
->first_to_check
= add_buf(q
->first_to_check
, count
);
489 if (atomic_sub(count
, &q
->nr_buf_used
) == 0)
490 qdio_perf_stat_inc(&perf_stats
.inbound_queue_full
);
492 case SLSB_P_INPUT_ERROR
:
493 announce_buffer_error(q
, count
);
494 /* process the buffer, the upper layer will take care of it */
495 q
->first_to_check
= add_buf(q
->first_to_check
, count
);
496 atomic_sub(count
, &q
->nr_buf_used
);
498 case SLSB_CU_INPUT_EMPTY
:
499 case SLSB_P_INPUT_NOT_INIT
:
500 case SLSB_P_INPUT_ACK
:
501 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "in nop");
507 return q
->first_to_check
;
510 static int qdio_inbound_q_moved(struct qdio_q
*q
)
514 bufnr
= get_inbound_buffer_frontier(q
);
516 if ((bufnr
!= q
->last_move
) || q
->qdio_error
) {
517 q
->last_move
= bufnr
;
518 if (!is_thinint_irq(q
->irq_ptr
) && !MACHINE_IS_VM
)
519 q
->u
.in
.timestamp
= get_usecs();
525 static inline int qdio_inbound_q_done(struct qdio_q
*q
)
527 unsigned char state
= 0;
529 if (!atomic_read(&q
->nr_buf_used
))
533 get_buf_state(q
, q
->first_to_check
, &state
, 0);
535 if (state
== SLSB_P_INPUT_PRIMED
)
536 /* more work coming */
539 if (is_thinint_irq(q
->irq_ptr
))
542 /* don't poll under z/VM */
547 * At this point we know, that inbound first_to_check
548 * has (probably) not moved (see qdio_inbound_processing).
550 if (get_usecs() > q
->u
.in
.timestamp
+ QDIO_INPUT_THRESHOLD
) {
551 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "in done:%02x",
558 static void qdio_kick_handler(struct qdio_q
*q
)
560 int start
= q
->first_to_kick
;
561 int end
= q
->first_to_check
;
564 if (unlikely(q
->irq_ptr
->state
!= QDIO_IRQ_STATE_ACTIVE
))
567 count
= sub_buf(end
, start
);
570 qdio_perf_stat_inc(&perf_stats
.inbound_handler
);
571 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "kih s:%02x c:%02x", start
, count
);
573 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "koh: s:%02x c:%02x",
576 q
->handler(q
->irq_ptr
->cdev
, q
->qdio_error
, q
->nr
, start
, count
,
577 q
->irq_ptr
->int_parm
);
579 /* for the next time */
580 q
->first_to_kick
= end
;
584 static void __qdio_inbound_processing(struct qdio_q
*q
)
586 qdio_perf_stat_inc(&perf_stats
.tasklet_inbound
);
588 if (!qdio_inbound_q_moved(q
))
591 qdio_kick_handler(q
);
593 if (!qdio_inbound_q_done(q
))
594 /* means poll time is not yet over */
597 qdio_stop_polling(q
);
599 * We need to check again to not lose initiative after
600 * resetting the ACK state.
602 if (!qdio_inbound_q_done(q
))
606 void qdio_inbound_processing(unsigned long data
)
608 struct qdio_q
*q
= (struct qdio_q
*)data
;
609 __qdio_inbound_processing(q
);
612 static int get_outbound_buffer_frontier(struct qdio_q
*q
)
617 if (((queue_type(q
) != QDIO_IQDIO_QFMT
) && !pci_out_supported(q
)) ||
618 (queue_type(q
) == QDIO_IQDIO_QFMT
&& multicast_outbound(q
)))
622 * Don't check 128 buffers, as otherwise qdio_inbound_q_moved
625 count
= min(atomic_read(&q
->nr_buf_used
), QDIO_MAX_BUFFERS_MASK
);
626 stop
= add_buf(q
->first_to_check
, count
);
628 if (q
->first_to_check
== stop
)
629 return q
->first_to_check
;
631 count
= get_buf_states(q
, q
->first_to_check
, &state
, count
, 0);
633 return q
->first_to_check
;
636 case SLSB_P_OUTPUT_EMPTY
:
637 /* the adapter got it */
638 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "out empty:%1d %02x", q
->nr
, count
);
640 atomic_sub(count
, &q
->nr_buf_used
);
641 q
->first_to_check
= add_buf(q
->first_to_check
, count
);
643 case SLSB_P_OUTPUT_ERROR
:
644 announce_buffer_error(q
, count
);
645 /* process the buffer, the upper layer will take care of it */
646 q
->first_to_check
= add_buf(q
->first_to_check
, count
);
647 atomic_sub(count
, &q
->nr_buf_used
);
649 case SLSB_CU_OUTPUT_PRIMED
:
650 /* the adapter has not fetched the output yet */
651 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "out primed:%1d", q
->nr
);
653 case SLSB_P_OUTPUT_NOT_INIT
:
654 case SLSB_P_OUTPUT_HALTED
:
659 return q
->first_to_check
;
662 /* all buffers processed? */
663 static inline int qdio_outbound_q_done(struct qdio_q
*q
)
665 return atomic_read(&q
->nr_buf_used
) == 0;
668 static inline int qdio_outbound_q_moved(struct qdio_q
*q
)
672 bufnr
= get_outbound_buffer_frontier(q
);
674 if ((bufnr
!= q
->last_move
) || q
->qdio_error
) {
675 q
->last_move
= bufnr
;
676 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "out moved:%1d", q
->nr
);
682 static int qdio_kick_outbound_q(struct qdio_q
*q
)
684 unsigned int busy_bit
;
687 if (!need_siga_out(q
))
690 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "siga-w:%1d", q
->nr
);
691 qdio_perf_stat_inc(&perf_stats
.siga_out
);
693 cc
= qdio_siga_output(q
, &busy_bit
);
699 DBF_ERROR("%4x cc2 REP:%1d", SCH_NO(q
), q
->nr
);
700 cc
|= QDIO_ERROR_SIGA_BUSY
;
702 DBF_DEV_EVENT(DBF_INFO
, q
->irq_ptr
, "siga-w cc2:%1d", q
->nr
);
706 DBF_ERROR("%4x SIGA-W:%1d", SCH_NO(q
), cc
);
712 static void __qdio_outbound_processing(struct qdio_q
*q
)
714 qdio_perf_stat_inc(&perf_stats
.tasklet_outbound
);
715 BUG_ON(atomic_read(&q
->nr_buf_used
) < 0);
717 if (qdio_outbound_q_moved(q
))
718 qdio_kick_handler(q
);
720 if (queue_type(q
) == QDIO_ZFCP_QFMT
)
721 if (!pci_out_supported(q
) && !qdio_outbound_q_done(q
))
724 /* bail out for HiperSockets unicast queues */
725 if (queue_type(q
) == QDIO_IQDIO_QFMT
&& !multicast_outbound(q
))
728 if ((queue_type(q
) == QDIO_IQDIO_QFMT
) &&
729 (atomic_read(&q
->nr_buf_used
)) > QDIO_IQDIO_POLL_LVL
)
732 if (q
->u
.out
.pci_out_enabled
)
736 * Now we know that queue type is either qeth without pci enabled
737 * or HiperSockets multicast. Make sure buffer switch from PRIMED to
738 * EMPTY is noticed and outbound_handler is called after some time.
740 if (qdio_outbound_q_done(q
))
741 del_timer(&q
->u
.out
.timer
);
743 if (!timer_pending(&q
->u
.out
.timer
)) {
744 mod_timer(&q
->u
.out
.timer
, jiffies
+ 10 * HZ
);
745 qdio_perf_stat_inc(&perf_stats
.debug_tl_out_timer
);
751 if (unlikely(q
->irq_ptr
->state
== QDIO_IRQ_STATE_STOPPED
))
753 tasklet_schedule(&q
->tasklet
);
756 /* outbound tasklet */
757 void qdio_outbound_processing(unsigned long data
)
759 struct qdio_q
*q
= (struct qdio_q
*)data
;
760 __qdio_outbound_processing(q
);
763 void qdio_outbound_timer(unsigned long data
)
765 struct qdio_q
*q
= (struct qdio_q
*)data
;
767 if (unlikely(q
->irq_ptr
->state
== QDIO_IRQ_STATE_STOPPED
))
769 tasklet_schedule(&q
->tasklet
);
772 static inline void qdio_check_outbound_after_thinint(struct qdio_q
*q
)
777 if (!pci_out_supported(q
))
780 for_each_output_queue(q
->irq_ptr
, out
, i
)
781 if (!qdio_outbound_q_done(out
))
782 tasklet_schedule(&out
->tasklet
);
785 static void __tiqdio_inbound_processing(struct qdio_q
*q
)
787 qdio_perf_stat_inc(&perf_stats
.thinint_inbound
);
788 qdio_sync_after_thinint(q
);
791 * The interrupt could be caused by a PCI request. Check the
792 * PCI capable outbound queues.
794 qdio_check_outbound_after_thinint(q
);
796 if (!qdio_inbound_q_moved(q
))
799 qdio_kick_handler(q
);
801 if (!qdio_inbound_q_done(q
)) {
802 qdio_perf_stat_inc(&perf_stats
.thinint_inbound_loop
);
803 if (likely(q
->irq_ptr
->state
!= QDIO_IRQ_STATE_STOPPED
)) {
804 tasklet_schedule(&q
->tasklet
);
809 qdio_stop_polling(q
);
811 * We need to check again to not lose initiative after
812 * resetting the ACK state.
814 if (!qdio_inbound_q_done(q
)) {
815 qdio_perf_stat_inc(&perf_stats
.thinint_inbound_loop2
);
816 if (likely(q
->irq_ptr
->state
!= QDIO_IRQ_STATE_STOPPED
))
817 tasklet_schedule(&q
->tasklet
);
821 void tiqdio_inbound_processing(unsigned long data
)
823 struct qdio_q
*q
= (struct qdio_q
*)data
;
824 __tiqdio_inbound_processing(q
);
827 static inline void qdio_set_state(struct qdio_irq
*irq_ptr
,
828 enum qdio_irq_states state
)
830 DBF_DEV_EVENT(DBF_INFO
, irq_ptr
, "newstate: %1d", state
);
832 irq_ptr
->state
= state
;
836 static void qdio_irq_check_sense(struct qdio_irq
*irq_ptr
, struct irb
*irb
)
838 if (irb
->esw
.esw0
.erw
.cons
) {
839 DBF_ERROR("%4x sense:", irq_ptr
->schid
.sch_no
);
840 DBF_ERROR_HEX(irb
, 64);
841 DBF_ERROR_HEX(irb
->ecw
, 64);
845 /* PCI interrupt handler */
846 static void qdio_int_handler_pci(struct qdio_irq
*irq_ptr
)
851 if (unlikely(irq_ptr
->state
== QDIO_IRQ_STATE_STOPPED
))
854 qdio_perf_stat_inc(&perf_stats
.pci_int
);
856 for_each_input_queue(irq_ptr
, q
, i
)
857 tasklet_schedule(&q
->tasklet
);
859 if (!(irq_ptr
->qib
.ac
& QIB_AC_OUTBOUND_PCI_SUPPORTED
))
862 for_each_output_queue(irq_ptr
, q
, i
) {
863 if (qdio_outbound_q_done(q
))
866 if (!siga_syncs_out_pci(q
))
869 tasklet_schedule(&q
->tasklet
);
873 static void qdio_handle_activate_check(struct ccw_device
*cdev
,
874 unsigned long intparm
, int cstat
, int dstat
)
876 struct qdio_irq
*irq_ptr
= cdev
->private->qdio_data
;
879 DBF_ERROR("%4x ACT CHECK", irq_ptr
->schid
.sch_no
);
880 DBF_ERROR("intp :%lx", intparm
);
881 DBF_ERROR("ds: %2x cs:%2x", dstat
, cstat
);
883 if (irq_ptr
->nr_input_qs
) {
884 q
= irq_ptr
->input_qs
[0];
885 } else if (irq_ptr
->nr_output_qs
) {
886 q
= irq_ptr
->output_qs
[0];
891 q
->handler(q
->irq_ptr
->cdev
, QDIO_ERROR_ACTIVATE_CHECK_CONDITION
,
892 0, -1, -1, irq_ptr
->int_parm
);
894 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_STOPPED
);
897 static void qdio_establish_handle_irq(struct ccw_device
*cdev
, int cstat
,
900 struct qdio_irq
*irq_ptr
= cdev
->private->qdio_data
;
902 DBF_DEV_EVENT(DBF_INFO
, irq_ptr
, "qest irq");
906 if (dstat
& ~(DEV_STAT_DEV_END
| DEV_STAT_CHN_END
))
908 if (!(dstat
& DEV_STAT_DEV_END
))
910 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ESTABLISHED
);
914 DBF_ERROR("%4x EQ:error", irq_ptr
->schid
.sch_no
);
915 DBF_ERROR("ds: %2x cs:%2x", dstat
, cstat
);
916 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
919 /* qdio interrupt handler */
920 void qdio_int_handler(struct ccw_device
*cdev
, unsigned long intparm
,
923 struct qdio_irq
*irq_ptr
= cdev
->private->qdio_data
;
926 qdio_perf_stat_inc(&perf_stats
.qdio_int
);
928 if (!intparm
|| !irq_ptr
) {
929 DBF_ERROR("qint:%4x", cdev
->private->schid
.sch_no
);
934 switch (PTR_ERR(irb
)) {
936 DBF_ERROR("%4x IO error", irq_ptr
->schid
.sch_no
);
937 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ERR
);
938 wake_up(&cdev
->private->wait_q
);
945 qdio_irq_check_sense(irq_ptr
, irb
);
946 cstat
= irb
->scsw
.cmd
.cstat
;
947 dstat
= irb
->scsw
.cmd
.dstat
;
949 switch (irq_ptr
->state
) {
950 case QDIO_IRQ_STATE_INACTIVE
:
951 qdio_establish_handle_irq(cdev
, cstat
, dstat
);
953 case QDIO_IRQ_STATE_CLEANUP
:
954 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
956 case QDIO_IRQ_STATE_ESTABLISHED
:
957 case QDIO_IRQ_STATE_ACTIVE
:
958 if (cstat
& SCHN_STAT_PCI
) {
959 qdio_int_handler_pci(irq_ptr
);
963 qdio_handle_activate_check(cdev
, intparm
, cstat
,
969 wake_up(&cdev
->private->wait_q
);
973 * qdio_get_ssqd_desc - get qdio subchannel description
974 * @cdev: ccw device to get description for
975 * @data: where to store the ssqd
977 * Returns 0 or an error code. The results of the chsc are stored in the
978 * specified structure.
980 int qdio_get_ssqd_desc(struct ccw_device
*cdev
,
981 struct qdio_ssqd_desc
*data
)
984 if (!cdev
|| !cdev
->private)
987 DBF_EVENT("get ssqd:%4x", cdev
->private->schid
.sch_no
);
988 return qdio_setup_get_ssqd(NULL
, &cdev
->private->schid
, data
);
990 EXPORT_SYMBOL_GPL(qdio_get_ssqd_desc
);
993 * qdio_cleanup - shutdown queues and free data structures
994 * @cdev: associated ccw device
995 * @how: use halt or clear to shutdown
997 * This function calls qdio_shutdown() for @cdev with method @how.
998 * and qdio_free(). The qdio_free() return value is ignored since
999 * !irq_ptr is already checked.
1001 int qdio_cleanup(struct ccw_device
*cdev
, int how
)
1003 struct qdio_irq
*irq_ptr
= cdev
->private->qdio_data
;
1009 rc
= qdio_shutdown(cdev
, how
);
1014 EXPORT_SYMBOL_GPL(qdio_cleanup
);
1016 static void qdio_shutdown_queues(struct ccw_device
*cdev
)
1018 struct qdio_irq
*irq_ptr
= cdev
->private->qdio_data
;
1022 for_each_input_queue(irq_ptr
, q
, i
)
1023 tasklet_kill(&q
->tasklet
);
1025 for_each_output_queue(irq_ptr
, q
, i
) {
1026 del_timer(&q
->u
.out
.timer
);
1027 tasklet_kill(&q
->tasklet
);
1032 * qdio_shutdown - shut down a qdio subchannel
1033 * @cdev: associated ccw device
1034 * @how: use halt or clear to shutdown
1036 int qdio_shutdown(struct ccw_device
*cdev
, int how
)
1038 struct qdio_irq
*irq_ptr
= cdev
->private->qdio_data
;
1040 unsigned long flags
;
1045 BUG_ON(irqs_disabled());
1046 DBF_EVENT("qshutdown:%4x", cdev
->private->schid
.sch_no
);
1048 mutex_lock(&irq_ptr
->setup_mutex
);
1050 * Subchannel was already shot down. We cannot prevent being called
1051 * twice since cio may trigger a shutdown asynchronously.
1053 if (irq_ptr
->state
== QDIO_IRQ_STATE_INACTIVE
) {
1054 mutex_unlock(&irq_ptr
->setup_mutex
);
1059 * Indicate that the device is going down. Scheduling the queue
1060 * tasklets is forbidden from here on.
1062 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_STOPPED
);
1064 tiqdio_remove_input_queues(irq_ptr
);
1065 qdio_shutdown_queues(cdev
);
1066 qdio_shutdown_debug_entries(irq_ptr
, cdev
);
1068 /* cleanup subchannel */
1069 spin_lock_irqsave(get_ccwdev_lock(cdev
), flags
);
1071 if (how
& QDIO_FLAG_CLEANUP_USING_CLEAR
)
1072 rc
= ccw_device_clear(cdev
, QDIO_DOING_CLEANUP
);
1074 /* default behaviour is halt */
1075 rc
= ccw_device_halt(cdev
, QDIO_DOING_CLEANUP
);
1077 DBF_ERROR("%4x SHUTD ERR", irq_ptr
->schid
.sch_no
);
1078 DBF_ERROR("rc:%4d", rc
);
1082 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_CLEANUP
);
1083 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
1084 wait_event_interruptible_timeout(cdev
->private->wait_q
,
1085 irq_ptr
->state
== QDIO_IRQ_STATE_INACTIVE
||
1086 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
,
1088 spin_lock_irqsave(get_ccwdev_lock(cdev
), flags
);
1091 qdio_shutdown_thinint(irq_ptr
);
1093 /* restore interrupt handler */
1094 if ((void *)cdev
->handler
== (void *)qdio_int_handler
)
1095 cdev
->handler
= irq_ptr
->orig_handler
;
1096 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), flags
);
1098 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
1099 mutex_unlock(&irq_ptr
->setup_mutex
);
1104 EXPORT_SYMBOL_GPL(qdio_shutdown
);
1107 * qdio_free - free data structures for a qdio subchannel
1108 * @cdev: associated ccw device
1110 int qdio_free(struct ccw_device
*cdev
)
1112 struct qdio_irq
*irq_ptr
= cdev
->private->qdio_data
;
1117 DBF_EVENT("qfree:%4x", cdev
->private->schid
.sch_no
);
1118 mutex_lock(&irq_ptr
->setup_mutex
);
1120 if (irq_ptr
->debug_area
!= NULL
) {
1121 debug_unregister(irq_ptr
->debug_area
);
1122 irq_ptr
->debug_area
= NULL
;
1124 cdev
->private->qdio_data
= NULL
;
1125 mutex_unlock(&irq_ptr
->setup_mutex
);
1127 qdio_release_memory(irq_ptr
);
1130 EXPORT_SYMBOL_GPL(qdio_free
);
1133 * qdio_initialize - allocate and establish queues for a qdio subchannel
1134 * @init_data: initialization data
1136 * This function first allocates queues via qdio_allocate() and on success
1137 * establishes them via qdio_establish().
1139 int qdio_initialize(struct qdio_initialize
*init_data
)
1143 rc
= qdio_allocate(init_data
);
1147 rc
= qdio_establish(init_data
);
1149 qdio_free(init_data
->cdev
);
1152 EXPORT_SYMBOL_GPL(qdio_initialize
);
1155 * qdio_allocate - allocate qdio queues and associated data
1156 * @init_data: initialization data
1158 int qdio_allocate(struct qdio_initialize
*init_data
)
1160 struct qdio_irq
*irq_ptr
;
1162 DBF_EVENT("qallocate:%4x", init_data
->cdev
->private->schid
.sch_no
);
1164 if ((init_data
->no_input_qs
&& !init_data
->input_handler
) ||
1165 (init_data
->no_output_qs
&& !init_data
->output_handler
))
1168 if ((init_data
->no_input_qs
> QDIO_MAX_QUEUES_PER_IRQ
) ||
1169 (init_data
->no_output_qs
> QDIO_MAX_QUEUES_PER_IRQ
))
1172 if ((!init_data
->input_sbal_addr_array
) ||
1173 (!init_data
->output_sbal_addr_array
))
1176 /* irq_ptr must be in GFP_DMA since it contains ccw1.cda */
1177 irq_ptr
= (void *) get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
1181 mutex_init(&irq_ptr
->setup_mutex
);
1182 qdio_allocate_dbf(init_data
, irq_ptr
);
1185 * Allocate a page for the chsc calls in qdio_establish.
1186 * Must be pre-allocated since a zfcp recovery will call
1187 * qdio_establish. In case of low memory and swap on a zfcp disk
1188 * we may not be able to allocate memory otherwise.
1190 irq_ptr
->chsc_page
= get_zeroed_page(GFP_KERNEL
);
1191 if (!irq_ptr
->chsc_page
)
1194 /* qdr is used in ccw1.cda which is u32 */
1195 irq_ptr
->qdr
= (struct qdr
*) get_zeroed_page(GFP_KERNEL
| GFP_DMA
);
1198 WARN_ON((unsigned long)irq_ptr
->qdr
& 0xfff);
1200 if (qdio_allocate_qs(irq_ptr
, init_data
->no_input_qs
,
1201 init_data
->no_output_qs
))
1204 init_data
->cdev
->private->qdio_data
= irq_ptr
;
1205 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_INACTIVE
);
1208 qdio_release_memory(irq_ptr
);
1212 EXPORT_SYMBOL_GPL(qdio_allocate
);
1215 * qdio_establish - establish queues on a qdio subchannel
1216 * @init_data: initialization data
1218 int qdio_establish(struct qdio_initialize
*init_data
)
1220 struct qdio_irq
*irq_ptr
;
1221 struct ccw_device
*cdev
= init_data
->cdev
;
1222 unsigned long saveflags
;
1225 DBF_EVENT("qestablish:%4x", cdev
->private->schid
.sch_no
);
1227 irq_ptr
= cdev
->private->qdio_data
;
1231 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
1234 mutex_lock(&irq_ptr
->setup_mutex
);
1235 qdio_setup_irq(init_data
);
1237 rc
= qdio_establish_thinint(irq_ptr
);
1239 mutex_unlock(&irq_ptr
->setup_mutex
);
1240 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
1245 irq_ptr
->ccw
.cmd_code
= irq_ptr
->equeue
.cmd
;
1246 irq_ptr
->ccw
.flags
= CCW_FLAG_SLI
;
1247 irq_ptr
->ccw
.count
= irq_ptr
->equeue
.count
;
1248 irq_ptr
->ccw
.cda
= (u32
)((addr_t
)irq_ptr
->qdr
);
1250 spin_lock_irqsave(get_ccwdev_lock(cdev
), saveflags
);
1251 ccw_device_set_options_mask(cdev
, 0);
1253 rc
= ccw_device_start(cdev
, &irq_ptr
->ccw
, QDIO_DOING_ESTABLISH
, 0, 0);
1255 DBF_ERROR("%4x est IO ERR", irq_ptr
->schid
.sch_no
);
1256 DBF_ERROR("rc:%4x", rc
);
1258 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), saveflags
);
1261 mutex_unlock(&irq_ptr
->setup_mutex
);
1262 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
1266 wait_event_interruptible_timeout(cdev
->private->wait_q
,
1267 irq_ptr
->state
== QDIO_IRQ_STATE_ESTABLISHED
||
1268 irq_ptr
->state
== QDIO_IRQ_STATE_ERR
, HZ
);
1270 if (irq_ptr
->state
!= QDIO_IRQ_STATE_ESTABLISHED
) {
1271 mutex_unlock(&irq_ptr
->setup_mutex
);
1272 qdio_shutdown(cdev
, QDIO_FLAG_CLEANUP_USING_CLEAR
);
1276 qdio_setup_ssqd_info(irq_ptr
);
1277 DBF_EVENT("qDmmwc:%2x", irq_ptr
->ssqd_desc
.mmwc
);
1278 DBF_EVENT("qib ac:%4x", irq_ptr
->qib
.ac
);
1280 /* qebsm is now setup if available, initialize buffer states */
1281 qdio_init_buf_states(irq_ptr
);
1283 mutex_unlock(&irq_ptr
->setup_mutex
);
1284 qdio_print_subchannel_info(irq_ptr
, cdev
);
1285 qdio_setup_debug_entries(irq_ptr
, cdev
);
1288 EXPORT_SYMBOL_GPL(qdio_establish
);
1291 * qdio_activate - activate queues on a qdio subchannel
1292 * @cdev: associated cdev
1294 int qdio_activate(struct ccw_device
*cdev
)
1296 struct qdio_irq
*irq_ptr
;
1298 unsigned long saveflags
;
1300 DBF_EVENT("qactivate:%4x", cdev
->private->schid
.sch_no
);
1302 irq_ptr
= cdev
->private->qdio_data
;
1306 if (cdev
->private->state
!= DEV_STATE_ONLINE
)
1309 mutex_lock(&irq_ptr
->setup_mutex
);
1310 if (irq_ptr
->state
== QDIO_IRQ_STATE_INACTIVE
) {
1315 irq_ptr
->ccw
.cmd_code
= irq_ptr
->aqueue
.cmd
;
1316 irq_ptr
->ccw
.flags
= CCW_FLAG_SLI
;
1317 irq_ptr
->ccw
.count
= irq_ptr
->aqueue
.count
;
1318 irq_ptr
->ccw
.cda
= 0;
1320 spin_lock_irqsave(get_ccwdev_lock(cdev
), saveflags
);
1321 ccw_device_set_options(cdev
, CCWDEV_REPORT_ALL
);
1323 rc
= ccw_device_start(cdev
, &irq_ptr
->ccw
, QDIO_DOING_ACTIVATE
,
1324 0, DOIO_DENY_PREFETCH
);
1326 DBF_ERROR("%4x act IO ERR", irq_ptr
->schid
.sch_no
);
1327 DBF_ERROR("rc:%4x", rc
);
1329 spin_unlock_irqrestore(get_ccwdev_lock(cdev
), saveflags
);
1334 if (is_thinint_irq(irq_ptr
))
1335 tiqdio_add_input_queues(irq_ptr
);
1337 /* wait for subchannel to become active */
1340 switch (irq_ptr
->state
) {
1341 case QDIO_IRQ_STATE_STOPPED
:
1342 case QDIO_IRQ_STATE_ERR
:
1346 qdio_set_state(irq_ptr
, QDIO_IRQ_STATE_ACTIVE
);
1350 mutex_unlock(&irq_ptr
->setup_mutex
);
1353 EXPORT_SYMBOL_GPL(qdio_activate
);
1355 static inline int buf_in_between(int bufnr
, int start
, int count
)
1357 int end
= add_buf(start
, count
);
1360 if (bufnr
>= start
&& bufnr
< end
)
1366 /* wrap-around case */
1367 if ((bufnr
>= start
&& bufnr
<= QDIO_MAX_BUFFERS_PER_Q
) ||
1375 * handle_inbound - reset processed input buffers
1376 * @q: queue containing the buffers
1378 * @bufnr: first buffer to process
1379 * @count: how many buffers are emptied
1381 static int handle_inbound(struct qdio_q
*q
, unsigned int callflags
,
1382 int bufnr
, int count
)
1386 if (!q
->u
.in
.polling
)
1389 /* protect against stop polling setting an ACK for an emptied slsb */
1390 if (count
== QDIO_MAX_BUFFERS_PER_Q
) {
1391 /* overwriting everything, just delete polling status */
1392 q
->u
.in
.polling
= 0;
1393 q
->u
.in
.ack_count
= 0;
1395 } else if (buf_in_between(q
->u
.in
.ack_start
, bufnr
, count
)) {
1397 /* partial overwrite, just update ack_start */
1398 diff
= add_buf(bufnr
, count
);
1399 diff
= sub_buf(diff
, q
->u
.in
.ack_start
);
1400 q
->u
.in
.ack_count
-= diff
;
1401 if (q
->u
.in
.ack_count
<= 0) {
1402 q
->u
.in
.polling
= 0;
1403 q
->u
.in
.ack_count
= 0;
1406 q
->u
.in
.ack_start
= add_buf(q
->u
.in
.ack_start
, diff
);
1409 /* the only ACK will be deleted, so stop polling */
1410 q
->u
.in
.polling
= 0;
1414 count
= set_buf_states(q
, bufnr
, SLSB_CU_INPUT_EMPTY
, count
);
1416 used
= atomic_add_return(count
, &q
->nr_buf_used
) - count
;
1417 BUG_ON(used
+ count
> QDIO_MAX_BUFFERS_PER_Q
);
1419 /* no need to signal as long as the adapter had free buffers */
1423 if (need_siga_in(q
))
1424 return qdio_siga_input(q
);
1429 * handle_outbound - process filled outbound buffers
1430 * @q: queue containing the buffers
1432 * @bufnr: first buffer to process
1433 * @count: how many buffers are filled
1435 static int handle_outbound(struct qdio_q
*q
, unsigned int callflags
,
1436 int bufnr
, int count
)
1438 unsigned char state
;
1441 qdio_perf_stat_inc(&perf_stats
.outbound_handler
);
1443 count
= set_buf_states(q
, bufnr
, SLSB_CU_OUTPUT_PRIMED
, count
);
1444 used
= atomic_add_return(count
, &q
->nr_buf_used
);
1445 BUG_ON(used
> QDIO_MAX_BUFFERS_PER_Q
);
1447 if (callflags
& QDIO_FLAG_PCI_OUT
)
1448 q
->u
.out
.pci_out_enabled
= 1;
1450 q
->u
.out
.pci_out_enabled
= 0;
1452 if (queue_type(q
) == QDIO_IQDIO_QFMT
) {
1453 if (multicast_outbound(q
))
1454 rc
= qdio_kick_outbound_q(q
);
1456 if ((q
->irq_ptr
->ssqd_desc
.mmwc
> 1) &&
1458 (count
<= q
->irq_ptr
->ssqd_desc
.mmwc
)) {
1459 /* exploit enhanced SIGA */
1460 q
->u
.out
.use_enh_siga
= 1;
1461 rc
= qdio_kick_outbound_q(q
);
1464 * One siga-w per buffer required for unicast
1467 q
->u
.out
.use_enh_siga
= 0;
1469 rc
= qdio_kick_outbound_q(q
);
1477 if (need_siga_sync(q
)) {
1478 qdio_siga_sync_q(q
);
1482 /* try to fast requeue buffers */
1483 get_buf_state(q
, prev_buf(bufnr
), &state
, 0);
1484 if (state
!= SLSB_CU_OUTPUT_PRIMED
)
1485 rc
= qdio_kick_outbound_q(q
);
1487 qdio_perf_stat_inc(&perf_stats
.fast_requeue
);
1490 tasklet_schedule(&q
->tasklet
);
1495 * do_QDIO - process input or output buffers
1496 * @cdev: associated ccw_device for the qdio subchannel
1497 * @callflags: input or output and special flags from the program
1498 * @q_nr: queue number
1499 * @bufnr: buffer number
1500 * @count: how many buffers to process
1502 int do_QDIO(struct ccw_device
*cdev
, unsigned int callflags
,
1503 int q_nr
, unsigned int bufnr
, unsigned int count
)
1505 struct qdio_irq
*irq_ptr
;
1507 if (bufnr
>= QDIO_MAX_BUFFERS_PER_Q
|| count
> QDIO_MAX_BUFFERS_PER_Q
)
1510 irq_ptr
= cdev
->private->qdio_data
;
1514 DBF_DEV_EVENT(DBF_INFO
, irq_ptr
,
1515 "do%02x b:%02x c:%02x", callflags
, bufnr
, count
);
1517 if (irq_ptr
->state
!= QDIO_IRQ_STATE_ACTIVE
)
1520 if (callflags
& QDIO_FLAG_SYNC_INPUT
)
1521 return handle_inbound(irq_ptr
->input_qs
[q_nr
],
1522 callflags
, bufnr
, count
);
1523 else if (callflags
& QDIO_FLAG_SYNC_OUTPUT
)
1524 return handle_outbound(irq_ptr
->output_qs
[q_nr
],
1525 callflags
, bufnr
, count
);
1528 EXPORT_SYMBOL_GPL(do_QDIO
);
1530 static int __init
init_QDIO(void)
1534 rc
= qdio_setup_init();
1537 rc
= tiqdio_allocate_memory();
1540 rc
= qdio_debug_init();
1543 rc
= qdio_setup_perf_stats();
1546 rc
= tiqdio_register_thinints();
1552 qdio_remove_perf_stats();
1556 tiqdio_free_memory();
1562 static void __exit
exit_QDIO(void)
1564 tiqdio_unregister_thinints();
1565 tiqdio_free_memory();
1566 qdio_remove_perf_stats();
1571 module_init(init_QDIO
);
1572 module_exit(exit_QDIO
);