blob: 8551c51976c6a2d4ea18242e290cacb23feb219a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 *
3 * linux/drivers/s390/cio/qdio.c
4 *
5 * Linux for S/390 QDIO base support, Hipersocket base support
6 * version 2
7 *
8 * Copyright 2000,2002 IBM Corporation
9 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
Cornelia Huck4ce3b302006-01-14 13:21:04 -080010 * 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 *
12 * Restriction: only 63 iqdio subchannels would have its own indicator,
13 * after that, subsequent subchannels share one indicator
14 *
15 *
16 *
17 *
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)
21 * any later version.
22 *
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.
27 *
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.
31 */
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include <linux/module.h>
34#include <linux/init.h>
35
36#include <linux/slab.h>
37#include <linux/kernel.h>
38#include <linux/proc_fs.h>
39#include <linux/timer.h>
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -070040#include <linux/mempool.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
42#include <asm/ccwdev.h>
43#include <asm/io.h>
44#include <asm/atomic.h>
45#include <asm/semaphore.h>
46#include <asm/timex.h>
47
48#include <asm/debug.h>
Ursula Braun34249d02006-12-08 15:54:18 +010049#include <asm/s390_rdev.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070050#include <asm/qdio.h>
51
52#include "cio.h"
53#include "css.h"
54#include "device.h"
55#include "airq.h"
56#include "qdio.h"
57#include "ioasm.h"
58#include "chsc.h"
59
Linus Torvalds1da177e2005-04-16 15:20:36 -070060/****************** MODULE PARAMETER VARIABLES ********************/
61MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
62MODULE_DESCRIPTION("QDIO base support version 2, " \
63 "Copyright 2000 IBM Corporation");
64MODULE_LICENSE("GPL");
65
66/******************** HERE WE GO ***********************************/
67
Heiko Carstense018ba12006-02-01 03:06:31 -080068static const char version[] = "QDIO base support version 2";
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Ursula Braun34249d02006-12-08 15:54:18 +010070static int qdio_performance_stats = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070071static int proc_perf_file_registration;
72static unsigned long i_p_c, i_p_nc, o_p_c, o_p_nc, ii_p_c, ii_p_nc;
73static struct qdio_perf_stats perf_stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
75static int hydra_thinints;
Frank Pavlic8129ee12006-01-06 00:19:20 -080076static int is_passthrough = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070077static int omit_svs;
78
79static int indicator_used[INDICATORS_PER_CACHELINE];
80static __u32 * volatile indicators;
81static __u32 volatile spare_indicator;
82static atomic_t spare_indicator_usecount;
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -070083#define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
84static mempool_t *qdio_mempool_scssc;
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
86static debug_info_t *qdio_dbf_setup;
87static debug_info_t *qdio_dbf_sbal;
88static debug_info_t *qdio_dbf_trace;
89static debug_info_t *qdio_dbf_sense;
90#ifdef CONFIG_QDIO_DEBUG
91static debug_info_t *qdio_dbf_slsb_out;
92static debug_info_t *qdio_dbf_slsb_in;
93#endif /* CONFIG_QDIO_DEBUG */
94
95/* iQDIO stuff: */
96static volatile struct qdio_q *tiq_list=NULL; /* volatile as it could change
97 during a while loop */
98static DEFINE_SPINLOCK(ttiq_list_lock);
99static int register_thinint_result;
100static void tiqdio_tl(unsigned long);
101static DECLARE_TASKLET(tiqdio_tasklet,tiqdio_tl,0);
102
103/* not a macro, as one of the arguments is atomic_read */
104static inline int
105qdio_min(int a,int b)
106{
107 if (a<b)
108 return a;
109 else
110 return b;
111}
112
113/***************** SCRUBBER HELPER ROUTINES **********************/
114
Al Viroa46206e2005-08-25 23:03:35 +0100115static inline __u64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116qdio_get_micros(void)
117{
Frank Pavlic47addc82006-09-20 15:59:03 +0200118 return (get_clock() >> 12); /* time>>12 is microseconds */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119}
120
121/*
122 * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
123 * the q in any case, so that we'll not be interrupted when we are in
124 * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
125 * ever works (last famous words)
126 */
127static inline int
128qdio_reserve_q(struct qdio_q *q)
129{
130 return atomic_add_return(1,&q->use_count) - 1;
131}
132
133static inline void
134qdio_release_q(struct qdio_q *q)
135{
136 atomic_dec(&q->use_count);
137}
138
Frank Pavlic8129ee12006-01-06 00:19:20 -0800139/*check ccq */
140static inline int
141qdio_check_ccq(struct qdio_q *q, unsigned int ccq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142{
Frank Pavlic8129ee12006-01-06 00:19:20 -0800143 char dbf_text[15];
144
145 if (ccq == 0 || ccq == 32 || ccq == 96)
146 return 0;
147 if (ccq == 97)
148 return 1;
149 /*notify devices immediately*/
150 sprintf(dbf_text,"%d", ccq);
151 QDIO_DBF_TEXT2(1,trace,dbf_text);
152 return -EIO;
153}
154/* EQBS: extract buffer states */
155static inline int
156qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
157 unsigned int *start, unsigned int *cnt)
158{
159 struct qdio_irq *irq;
160 unsigned int tmp_cnt, q_no, ccq;
161 int rc ;
162 char dbf_text[15];
163
164 ccq = 0;
165 tmp_cnt = *cnt;
166 irq = (struct qdio_irq*)q->irq_ptr;
167 q_no = q->q_no;
168 if(!q->is_input_q)
169 q_no += irq->no_input_qs;
Frank Pavlic15c73692006-02-20 18:28:12 -0800170again:
Frank Pavlic8129ee12006-01-06 00:19:20 -0800171 ccq = do_eqbs(irq->sch_token, state, q_no, start, cnt);
172 rc = qdio_check_ccq(q, ccq);
Frank Pavlic15c73692006-02-20 18:28:12 -0800173 if (rc == 1) {
174 QDIO_DBF_TEXT5(1,trace,"eqAGAIN");
175 goto again;
176 }
Frank Pavlic8129ee12006-01-06 00:19:20 -0800177 if (rc < 0) {
178 QDIO_DBF_TEXT2(1,trace,"eqberr");
179 sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt, *cnt, ccq, q_no);
180 QDIO_DBF_TEXT2(1,trace,dbf_text);
181 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
182 QDIO_STATUS_LOOK_FOR_ERROR,
183 0, 0, 0, -1, -1, q->int_parm);
184 return 0;
185 }
186 return (tmp_cnt - *cnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187}
188
Frank Pavlic8129ee12006-01-06 00:19:20 -0800189/* SQBS: set buffer states */
190static inline int
191qdio_do_sqbs(struct qdio_q *q, unsigned char state,
192 unsigned int *start, unsigned int *cnt)
193{
194 struct qdio_irq *irq;
195 unsigned int tmp_cnt, q_no, ccq;
196 int rc;
197 char dbf_text[15];
198
199 ccq = 0;
200 tmp_cnt = *cnt;
201 irq = (struct qdio_irq*)q->irq_ptr;
202 q_no = q->q_no;
203 if(!q->is_input_q)
204 q_no += irq->no_input_qs;
Frank Pavlic15c73692006-02-20 18:28:12 -0800205again:
Frank Pavlic8129ee12006-01-06 00:19:20 -0800206 ccq = do_sqbs(irq->sch_token, state, q_no, start, cnt);
207 rc = qdio_check_ccq(q, ccq);
Frank Pavlic15c73692006-02-20 18:28:12 -0800208 if (rc == 1) {
209 QDIO_DBF_TEXT5(1,trace,"sqAGAIN");
210 goto again;
211 }
Frank Pavlic8129ee12006-01-06 00:19:20 -0800212 if (rc < 0) {
213 QDIO_DBF_TEXT3(1,trace,"sqberr");
214 sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt,*cnt,ccq,q_no);
215 QDIO_DBF_TEXT3(1,trace,dbf_text);
216 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
217 QDIO_STATUS_LOOK_FOR_ERROR,
218 0, 0, 0, -1, -1, q->int_parm);
219 return 0;
220 }
221 return (tmp_cnt - *cnt);
222}
223
224static inline int
225qdio_set_slsb(struct qdio_q *q, unsigned int *bufno,
226 unsigned char state, unsigned int *count)
227{
228 volatile char *slsb;
229 struct qdio_irq *irq;
230
231 irq = (struct qdio_irq*)q->irq_ptr;
232 if (!irq->is_qebsm) {
233 slsb = (char *)&q->slsb.acc.val[(*bufno)];
234 xchg(slsb, state);
235 return 1;
236 }
237 return qdio_do_sqbs(q, state, bufno, count);
238}
239
240#ifdef CONFIG_QDIO_DEBUG
241static inline void
242qdio_trace_slsb(struct qdio_q *q)
243{
244 if (q->queue_type==QDIO_TRACE_QTYPE) {
245 if (q->is_input_q)
246 QDIO_DBF_HEX2(0,slsb_in,&q->slsb,
247 QDIO_MAX_BUFFERS_PER_Q);
248 else
249 QDIO_DBF_HEX2(0,slsb_out,&q->slsb,
250 QDIO_MAX_BUFFERS_PER_Q);
251 }
252}
253#endif
254
255static inline int
256set_slsb(struct qdio_q *q, unsigned int *bufno,
257 unsigned char state, unsigned int *count)
258{
259 int rc;
260#ifdef CONFIG_QDIO_DEBUG
261 qdio_trace_slsb(q);
262#endif
263 rc = qdio_set_slsb(q, bufno, state, count);
264#ifdef CONFIG_QDIO_DEBUG
265 qdio_trace_slsb(q);
266#endif
267 return rc;
268}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269static inline int
270qdio_siga_sync(struct qdio_q *q, unsigned int gpr2,
271 unsigned int gpr3)
272{
273 int cc;
274
275 QDIO_DBF_TEXT4(0,trace,"sigasync");
276 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
277
Ursula Braun34249d02006-12-08 15:54:18 +0100278 if (qdio_performance_stats)
279 perf_stats.siga_syncs++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
Cornelia Hucka8237fc2006-01-06 00:19:21 -0800281 cc = do_siga_sync(q->schid, gpr2, gpr3);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 if (cc)
283 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
284
285 return cc;
286}
287
288static inline int
289qdio_siga_sync_q(struct qdio_q *q)
290{
291 if (q->is_input_q)
292 return qdio_siga_sync(q, 0, q->mask);
293 return qdio_siga_sync(q, q->mask, 0);
294}
295
Frank Pavlic8129ee12006-01-06 00:19:20 -0800296static int
297__do_siga_output(struct qdio_q *q, unsigned int *busy_bit)
298{
299 struct qdio_irq *irq;
300 unsigned int fc = 0;
Cornelia Hucka8237fc2006-01-06 00:19:21 -0800301 unsigned long schid;
Frank Pavlic8129ee12006-01-06 00:19:20 -0800302
303 irq = (struct qdio_irq *) q->irq_ptr;
304 if (!irq->is_qebsm)
Cornelia Hucka8237fc2006-01-06 00:19:21 -0800305 schid = *((u32 *)&q->schid);
306 else {
307 schid = irq->sch_token;
308 fc |= 0x80;
309 }
310 return do_siga_output(schid, q->mask, busy_bit, fc);
Frank Pavlic8129ee12006-01-06 00:19:20 -0800311}
312
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313/*
314 * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
315 * an access exception
316 */
317static inline int
318qdio_siga_output(struct qdio_q *q)
319{
320 int cc;
321 __u32 busy_bit;
322 __u64 start_time=0;
323
Ursula Braun34249d02006-12-08 15:54:18 +0100324 if (qdio_performance_stats)
325 perf_stats.siga_outs++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
327 QDIO_DBF_TEXT4(0,trace,"sigaout");
328 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
329
330 for (;;) {
Frank Pavlic8129ee12006-01-06 00:19:20 -0800331 cc = __do_siga_output(q, &busy_bit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332//QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
333 if ((cc==2) && (busy_bit) && (q->is_iqdio_q)) {
334 if (!start_time)
335 start_time=NOW;
336 if ((NOW-start_time)>QDIO_BUSY_BIT_PATIENCE)
337 break;
338 } else
339 break;
340 }
341
342 if ((cc==2) && (busy_bit))
343 cc |= QDIO_SIGA_ERROR_B_BIT_SET;
344
345 if (cc)
346 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
347
348 return cc;
349}
350
351static inline int
352qdio_siga_input(struct qdio_q *q)
353{
354 int cc;
355
356 QDIO_DBF_TEXT4(0,trace,"sigain");
357 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
358
Ursula Braun34249d02006-12-08 15:54:18 +0100359 if (qdio_performance_stats)
360 perf_stats.siga_ins++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
Cornelia Hucka8237fc2006-01-06 00:19:21 -0800362 cc = do_siga_input(q->schid, q->mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363
364 if (cc)
365 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
366
367 return cc;
368}
369
370/* locked by the locks in qdio_activate and qdio_cleanup */
Frank Pavlic8129ee12006-01-06 00:19:20 -0800371static __u32 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372qdio_get_indicator(void)
373{
374 int i;
375
376 for (i=1;i<INDICATORS_PER_CACHELINE;i++)
377 if (!indicator_used[i]) {
378 indicator_used[i]=1;
379 return indicators+i;
380 }
381 atomic_inc(&spare_indicator_usecount);
382 return (__u32 * volatile) &spare_indicator;
383}
384
385/* locked by the locks in qdio_activate and qdio_cleanup */
386static void
387qdio_put_indicator(__u32 *addr)
388{
389 int i;
390
391 if ( (addr) && (addr!=&spare_indicator) ) {
392 i=addr-indicators;
393 indicator_used[i]=0;
394 }
395 if (addr == &spare_indicator)
396 atomic_dec(&spare_indicator_usecount);
397}
398
Frank Pavlic8129ee12006-01-06 00:19:20 -0800399static inline void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400tiqdio_clear_summary_bit(__u32 *location)
401{
402 QDIO_DBF_TEXT5(0,trace,"clrsummb");
403 QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
404
405 xchg(location,0);
406}
407
Frank Pavlic8129ee12006-01-06 00:19:20 -0800408static inline void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409tiqdio_set_summary_bit(__u32 *location)
410{
411 QDIO_DBF_TEXT5(0,trace,"setsummb");
412 QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
413
414 xchg(location,-1);
415}
416
417static inline void
418tiqdio_sched_tl(void)
419{
420 tasklet_hi_schedule(&tiqdio_tasklet);
421}
422
423static inline void
424qdio_mark_tiq(struct qdio_q *q)
425{
426 unsigned long flags;
427
428 QDIO_DBF_TEXT4(0,trace,"mark iq");
429 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
430
431 spin_lock_irqsave(&ttiq_list_lock,flags);
432 if (unlikely(atomic_read(&q->is_in_shutdown)))
433 goto out_unlock;
434
435 if (!q->is_input_q)
436 goto out_unlock;
437
438 if ((q->list_prev) || (q->list_next))
439 goto out_unlock;
440
441 if (!tiq_list) {
442 tiq_list=q;
443 q->list_prev=q;
444 q->list_next=q;
445 } else {
446 q->list_next=tiq_list;
447 q->list_prev=tiq_list->list_prev;
448 tiq_list->list_prev->list_next=q;
449 tiq_list->list_prev=q;
450 }
451 spin_unlock_irqrestore(&ttiq_list_lock,flags);
452
453 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
454 tiqdio_sched_tl();
455 return;
456out_unlock:
457 spin_unlock_irqrestore(&ttiq_list_lock,flags);
458 return;
459}
460
461static inline void
462qdio_mark_q(struct qdio_q *q)
463{
464 QDIO_DBF_TEXT4(0,trace,"mark q");
465 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
466
467 if (unlikely(atomic_read(&q->is_in_shutdown)))
468 return;
469
470 tasklet_schedule(&q->tasklet);
471}
472
473static inline int
474qdio_stop_polling(struct qdio_q *q)
475{
476#ifdef QDIO_USE_PROCESSING_STATE
Frank Pavlic8129ee12006-01-06 00:19:20 -0800477 unsigned int tmp, gsf, count = 1;
478 unsigned char state = 0;
479 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480
Ursula Braun9163bb22006-12-04 15:40:59 +0100481 if (!atomic_xchg(&q->polling,0))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 return 1;
483
484 QDIO_DBF_TEXT4(0,trace,"stoppoll");
485 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
486
487 /* show the card that we are not polling anymore */
488 if (!q->is_input_q)
489 return 1;
490
Frank Pavlic8129ee12006-01-06 00:19:20 -0800491 tmp = gsf = GET_SAVED_FRONTIER(q);
492 tmp = ((tmp + QDIO_MAX_BUFFERS_PER_Q-1) & (QDIO_MAX_BUFFERS_PER_Q-1) );
493 set_slsb(q, &tmp, SLSB_P_INPUT_NOT_INIT, &count);
494
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 /*
496 * we don't issue this SYNC_MEMORY, as we trust Rick T and
497 * moreover will not use the PROCESSING state under VM, so
498 * q->polling was 0 anyway
499 */
500 /*SYNC_MEMORY;*/
Frank Pavlic8129ee12006-01-06 00:19:20 -0800501 if (irq->is_qebsm) {
502 count = 1;
503 qdio_do_eqbs(q, &state, &gsf, &count);
504 } else
505 state = q->slsb.acc.val[gsf];
506 if (state != SLSB_P_INPUT_PRIMED)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 return 1;
508 /*
509 * set our summary bit again, as otherwise there is a
510 * small window we can miss between resetting it and
511 * checking for PRIMED state
512 */
513 if (q->is_thinint_q)
514 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
515 return 0;
516
517#else /* QDIO_USE_PROCESSING_STATE */
518 return 1;
519#endif /* QDIO_USE_PROCESSING_STATE */
520}
521
522/*
523 * see the comment in do_QDIO and before qdio_reserve_q about the
524 * sophisticated locking outside of unmark_q, so that we don't need to
525 * disable the interrupts :-)
526*/
527static inline void
528qdio_unmark_q(struct qdio_q *q)
529{
530 unsigned long flags;
531
532 QDIO_DBF_TEXT4(0,trace,"unmark q");
533 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
534
535 if ((!q->list_prev)||(!q->list_next))
536 return;
537
538 if ((q->is_thinint_q)&&(q->is_input_q)) {
539 /* iQDIO */
540 spin_lock_irqsave(&ttiq_list_lock,flags);
541 /* in case cleanup has done this already and simultanously
542 * qdio_unmark_q is called from the interrupt handler, we've
543 * got to check this in this specific case again */
544 if ((!q->list_prev)||(!q->list_next))
545 goto out;
546 if (q->list_next==q) {
547 /* q was the only interesting q */
548 tiq_list=NULL;
549 q->list_next=NULL;
550 q->list_prev=NULL;
551 } else {
552 q->list_next->list_prev=q->list_prev;
553 q->list_prev->list_next=q->list_next;
554 tiq_list=q->list_next;
555 q->list_next=NULL;
556 q->list_prev=NULL;
557 }
558out:
559 spin_unlock_irqrestore(&ttiq_list_lock,flags);
560 }
561}
562
563static inline unsigned long
564tiqdio_clear_global_summary(void)
565{
566 unsigned long time;
567
568 QDIO_DBF_TEXT5(0,trace,"clrglobl");
569
570 time = do_clear_global_summary();
571
572 QDIO_DBF_HEX5(0,trace,&time,sizeof(unsigned long));
573
574 return time;
575}
576
577
578/************************* OUTBOUND ROUTINES *******************************/
Frank Pavlic8129ee12006-01-06 00:19:20 -0800579static int
580qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q *q)
581{
582 struct qdio_irq *irq;
583 unsigned char state;
584 unsigned int cnt, count, ftc;
585
586 irq = (struct qdio_irq *) q->irq_ptr;
587 if ((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis))
588 SYNC_MEMORY;
589
590 ftc = q->first_to_check;
591 count = qdio_min(atomic_read(&q->number_of_buffers_used),
592 (QDIO_MAX_BUFFERS_PER_Q-1));
593 if (count == 0)
594 return q->first_to_check;
595 cnt = qdio_do_eqbs(q, &state, &ftc, &count);
596 if (cnt == 0)
597 return q->first_to_check;
598 switch (state) {
599 case SLSB_P_OUTPUT_ERROR:
600 QDIO_DBF_TEXT3(0,trace,"outperr");
601 atomic_sub(cnt , &q->number_of_buffers_used);
602 if (q->qdio_error)
603 q->error_status_flags |=
604 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
605 q->qdio_error = SLSB_P_OUTPUT_ERROR;
606 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
607 q->first_to_check = ftc;
608 break;
609 case SLSB_P_OUTPUT_EMPTY:
610 QDIO_DBF_TEXT5(0,trace,"outpempt");
611 atomic_sub(cnt, &q->number_of_buffers_used);
612 q->first_to_check = ftc;
613 break;
614 case SLSB_CU_OUTPUT_PRIMED:
615 /* all buffers primed */
616 QDIO_DBF_TEXT5(0,trace,"outpprim");
617 break;
618 default:
619 break;
620 }
621 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
622 return q->first_to_check;
623}
624
625static int
626qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q *q)
627{
628 struct qdio_irq *irq;
629 unsigned char state;
630 int tmp, ftc, count, cnt;
631 char dbf_text[15];
632
633
634 irq = (struct qdio_irq *) q->irq_ptr;
635 ftc = q->first_to_check;
636 count = qdio_min(atomic_read(&q->number_of_buffers_used),
637 (QDIO_MAX_BUFFERS_PER_Q-1));
638 if (count == 0)
639 return q->first_to_check;
640 cnt = qdio_do_eqbs(q, &state, &ftc, &count);
641 if (cnt == 0)
642 return q->first_to_check;
643 switch (state) {
644 case SLSB_P_INPUT_ERROR :
645#ifdef CONFIG_QDIO_DEBUG
646 QDIO_DBF_TEXT3(1,trace,"inperr");
647 sprintf(dbf_text,"%2x,%2x",ftc,count);
648 QDIO_DBF_TEXT3(1,trace,dbf_text);
649#endif /* CONFIG_QDIO_DEBUG */
650 if (q->qdio_error)
651 q->error_status_flags |=
652 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
653 q->qdio_error = SLSB_P_INPUT_ERROR;
654 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
655 atomic_sub(cnt, &q->number_of_buffers_used);
656 q->first_to_check = ftc;
657 break;
658 case SLSB_P_INPUT_PRIMED :
659 QDIO_DBF_TEXT3(0,trace,"inptprim");
660 sprintf(dbf_text,"%2x,%2x",ftc,count);
661 QDIO_DBF_TEXT3(1,trace,dbf_text);
662 tmp = 0;
663 ftc = q->first_to_check;
664#ifdef QDIO_USE_PROCESSING_STATE
665 if (cnt > 1) {
666 cnt -= 1;
667 tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
668 if (!tmp)
669 break;
670 }
671 cnt = 1;
672 tmp += set_slsb(q, &ftc,
673 SLSB_P_INPUT_PROCESSING, &cnt);
674 atomic_set(&q->polling, 1);
675#else
676 tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
677#endif
678 atomic_sub(tmp, &q->number_of_buffers_used);
679 q->first_to_check = ftc;
680 break;
681 case SLSB_CU_INPUT_EMPTY:
682 case SLSB_P_INPUT_NOT_INIT:
683 case SLSB_P_INPUT_PROCESSING:
684 QDIO_DBF_TEXT5(0,trace,"inpnipro");
685 break;
686 default:
687 break;
688 }
689 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
690 return q->first_to_check;
691}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692
Jesper Juhl77933d72005-07-27 11:46:09 -0700693static inline int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694qdio_get_outbound_buffer_frontier(struct qdio_q *q)
695{
Frank Pavlic8129ee12006-01-06 00:19:20 -0800696 struct qdio_irq *irq;
697 volatile char *slsb;
698 unsigned int count = 1;
699 int first_not_to_check, f, f_mod_no;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 char dbf_text[15];
701
702 QDIO_DBF_TEXT4(0,trace,"getobfro");
703 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
704
Frank Pavlic8129ee12006-01-06 00:19:20 -0800705 irq = (struct qdio_irq *) q->irq_ptr;
706 if (irq->is_qebsm)
707 return qdio_qebsm_get_outbound_buffer_frontier(q);
708
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 slsb=&q->slsb.acc.val[0];
710 f_mod_no=f=q->first_to_check;
711 /*
712 * f points to already processed elements, so f+no_used is correct...
713 * ... but: we don't check 128 buffers, as otherwise
714 * qdio_has_outbound_q_moved would return 0
715 */
716 first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
717 (QDIO_MAX_BUFFERS_PER_Q-1));
718
719 if ((!q->is_iqdio_q)&&(!q->hydra_gives_outbound_pcis))
720 SYNC_MEMORY;
721
722check_next:
723 if (f==first_not_to_check)
724 goto out;
725
726 switch(slsb[f_mod_no]) {
727
728 /* the adapter has not fetched the output yet */
729 case SLSB_CU_OUTPUT_PRIMED:
730 QDIO_DBF_TEXT5(0,trace,"outpprim");
731 break;
732
733 /* the adapter got it */
734 case SLSB_P_OUTPUT_EMPTY:
735 atomic_dec(&q->number_of_buffers_used);
736 f++;
737 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
738 QDIO_DBF_TEXT5(0,trace,"outpempt");
739 goto check_next;
740
741 case SLSB_P_OUTPUT_ERROR:
742 QDIO_DBF_TEXT3(0,trace,"outperr");
743 sprintf(dbf_text,"%x-%x-%x",f_mod_no,
744 q->sbal[f_mod_no]->element[14].sbalf.value,
745 q->sbal[f_mod_no]->element[15].sbalf.value);
746 QDIO_DBF_TEXT3(1,trace,dbf_text);
747 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
748
749 /* kind of process the buffer */
Frank Pavlic8129ee12006-01-06 00:19:20 -0800750 set_slsb(q, &f_mod_no, SLSB_P_OUTPUT_NOT_INIT, &count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751
752 /*
753 * we increment the frontier, as this buffer
754 * was processed obviously
755 */
756 atomic_dec(&q->number_of_buffers_used);
757 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
758
759 if (q->qdio_error)
760 q->error_status_flags|=
761 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
762 q->qdio_error=SLSB_P_OUTPUT_ERROR;
763 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
764
765 break;
766
767 /* no new buffers */
768 default:
769 QDIO_DBF_TEXT5(0,trace,"outpni");
770 }
771out:
772 return (q->first_to_check=f_mod_no);
773}
774
775/* all buffers are processed */
Jesper Juhl77933d72005-07-27 11:46:09 -0700776static inline int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777qdio_is_outbound_q_done(struct qdio_q *q)
778{
779 int no_used;
780#ifdef CONFIG_QDIO_DEBUG
781 char dbf_text[15];
782#endif
783
784 no_used=atomic_read(&q->number_of_buffers_used);
785
786#ifdef CONFIG_QDIO_DEBUG
787 if (no_used) {
788 sprintf(dbf_text,"oqisnt%02x",no_used);
789 QDIO_DBF_TEXT4(0,trace,dbf_text);
790 } else {
791 QDIO_DBF_TEXT4(0,trace,"oqisdone");
792 }
793 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
794#endif /* CONFIG_QDIO_DEBUG */
795 return (no_used==0);
796}
797
Jesper Juhl77933d72005-07-27 11:46:09 -0700798static inline int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799qdio_has_outbound_q_moved(struct qdio_q *q)
800{
801 int i;
802
803 i=qdio_get_outbound_buffer_frontier(q);
804
805 if ( (i!=GET_SAVED_FRONTIER(q)) ||
806 (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
807 SAVE_FRONTIER(q,i);
808 QDIO_DBF_TEXT4(0,trace,"oqhasmvd");
809 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
810 return 1;
811 } else {
812 QDIO_DBF_TEXT4(0,trace,"oqhsntmv");
813 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
814 return 0;
815 }
816}
817
Jesper Juhl77933d72005-07-27 11:46:09 -0700818static inline void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819qdio_kick_outbound_q(struct qdio_q *q)
820{
821 int result;
822#ifdef CONFIG_QDIO_DEBUG
823 char dbf_text[15];
824
825 QDIO_DBF_TEXT4(0,trace,"kickoutq");
826 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
827#endif /* CONFIG_QDIO_DEBUG */
828
829 if (!q->siga_out)
830 return;
831
832 /* here's the story with cc=2 and busy bit set (thanks, Rick):
833 * VM's CP could present us cc=2 and busy bit set on SIGA-write
834 * during reconfiguration of their Guest LAN (only in HIPERS mode,
835 * QDIO mode is asynchronous -- cc=2 and busy bit there will take
836 * the queues down immediately; and not being under VM we have a
837 * problem on cc=2 and busy bit set right away).
838 *
839 * Therefore qdio_siga_output will try for a short time constantly,
840 * if such a condition occurs. If it doesn't change, it will
841 * increase the busy_siga_counter and save the timestamp, and
842 * schedule the queue for later processing (via mark_q, using the
843 * queue tasklet). __qdio_outbound_processing will check out the
844 * counter. If non-zero, it will call qdio_kick_outbound_q as often
845 * as the value of the counter. This will attempt further SIGA
846 * instructions. For each successful SIGA, the counter is
847 * decreased, for failing SIGAs the counter remains the same, after
848 * all.
849 * After some time of no movement, qdio_kick_outbound_q will
850 * finally fail and reflect corresponding error codes to call
851 * the upper layer module and have it take the queues down.
852 *
853 * Note that this is a change from the original HiperSockets design
854 * (saying cc=2 and busy bit means take the queues down), but in
855 * these days Guest LAN didn't exist... excessive cc=2 with busy bit
856 * conditions will still take the queues down, but the threshold is
857 * higher due to the Guest LAN environment.
858 */
859
860
861 result=qdio_siga_output(q);
862
Frank Pavlic8129ee12006-01-06 00:19:20 -0800863 switch (result) {
864 case 0:
865 /* went smooth this time, reset timestamp */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866#ifdef CONFIG_QDIO_DEBUG
Frank Pavlic8129ee12006-01-06 00:19:20 -0800867 QDIO_DBF_TEXT3(0,trace,"cc2reslv");
Cornelia Hucka8237fc2006-01-06 00:19:21 -0800868 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
Frank Pavlic8129ee12006-01-06 00:19:20 -0800869 atomic_read(&q->busy_siga_counter));
870 QDIO_DBF_TEXT3(0,trace,dbf_text);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871#endif /* CONFIG_QDIO_DEBUG */
Frank Pavlic8129ee12006-01-06 00:19:20 -0800872 q->timing.busy_start=0;
873 break;
874 case (2|QDIO_SIGA_ERROR_B_BIT_SET):
875 /* cc=2 and busy bit: */
876 atomic_inc(&q->busy_siga_counter);
877
878 /* if the last siga was successful, save
879 * timestamp here */
880 if (!q->timing.busy_start)
881 q->timing.busy_start=NOW;
882
883 /* if we're in time, don't touch error_status_flags
884 * and siga_error */
885 if (NOW-q->timing.busy_start<QDIO_BUSY_BIT_GIVE_UP) {
886 qdio_mark_q(q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888 }
Frank Pavlic8129ee12006-01-06 00:19:20 -0800889 QDIO_DBF_TEXT2(0,trace,"cc2REPRT");
890#ifdef CONFIG_QDIO_DEBUG
Cornelia Hucka8237fc2006-01-06 00:19:21 -0800891 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
Frank Pavlic8129ee12006-01-06 00:19:20 -0800892 atomic_read(&q->busy_siga_counter));
893 QDIO_DBF_TEXT3(0,trace,dbf_text);
894#endif /* CONFIG_QDIO_DEBUG */
895 /* else fallthrough and report error */
896 default:
897 /* for plain cc=1, 2 or 3: */
898 if (q->siga_error)
899 q->error_status_flags|=
900 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
901 q->error_status_flags|=
902 QDIO_STATUS_LOOK_FOR_ERROR;
903 q->siga_error=result;
904 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905}
906
Jesper Juhl77933d72005-07-27 11:46:09 -0700907static inline void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908qdio_kick_outbound_handler(struct qdio_q *q)
909{
910 int start, end, real_end, count;
911#ifdef CONFIG_QDIO_DEBUG
912 char dbf_text[15];
913#endif
914
915 start = q->first_element_to_kick;
916 /* last_move_ftc was just updated */
917 real_end = GET_SAVED_FRONTIER(q);
918 end = (real_end+QDIO_MAX_BUFFERS_PER_Q-1)&
919 (QDIO_MAX_BUFFERS_PER_Q-1);
920 count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)&
921 (QDIO_MAX_BUFFERS_PER_Q-1);
922
923#ifdef CONFIG_QDIO_DEBUG
924 QDIO_DBF_TEXT4(0,trace,"kickouth");
925 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
926
927 sprintf(dbf_text,"s=%2xc=%2x",start,count);
928 QDIO_DBF_TEXT4(0,trace,dbf_text);
929#endif /* CONFIG_QDIO_DEBUG */
930
931 if (q->state==QDIO_IRQ_STATE_ACTIVE)
932 q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT|
933 q->error_status_flags,
934 q->qdio_error,q->siga_error,q->q_no,start,count,
935 q->int_parm);
936
937 /* for the next time: */
938 q->first_element_to_kick=real_end;
939 q->qdio_error=0;
940 q->siga_error=0;
941 q->error_status_flags=0;
942}
943
944static inline void
945__qdio_outbound_processing(struct qdio_q *q)
946{
947 int siga_attempts;
948
949 QDIO_DBF_TEXT4(0,trace,"qoutproc");
950 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
951
952 if (unlikely(qdio_reserve_q(q))) {
953 qdio_release_q(q);
Ursula Braun34249d02006-12-08 15:54:18 +0100954 if (qdio_performance_stats)
955 o_p_c++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 /* as we're sissies, we'll check next time */
957 if (likely(!atomic_read(&q->is_in_shutdown))) {
958 qdio_mark_q(q);
959 QDIO_DBF_TEXT4(0,trace,"busy,agn");
960 }
961 return;
962 }
Ursula Braun34249d02006-12-08 15:54:18 +0100963 if (qdio_performance_stats) {
964 o_p_nc++;
965 perf_stats.tl_runs++;
966 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967
968 /* see comment in qdio_kick_outbound_q */
969 siga_attempts=atomic_read(&q->busy_siga_counter);
970 while (siga_attempts) {
971 atomic_dec(&q->busy_siga_counter);
972 qdio_kick_outbound_q(q);
973 siga_attempts--;
974 }
975
976 if (qdio_has_outbound_q_moved(q))
977 qdio_kick_outbound_handler(q);
978
979 if (q->is_iqdio_q) {
980 /*
Ursula Braun028cf912006-12-15 17:18:14 +0100981 * for asynchronous queues, we better check, if the sent
982 * buffer is already switched from PRIMED to EMPTY.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700983 */
Ursula Braun028cf912006-12-15 17:18:14 +0100984 if ((q->queue_type == QDIO_IQDIO_QFMT_ASYNCH) &&
985 !qdio_is_outbound_q_done(q))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986 qdio_mark_q(q);
987
988 } else if (!q->hydra_gives_outbound_pcis)
989 if (!qdio_is_outbound_q_done(q))
990 qdio_mark_q(q);
991
992 qdio_release_q(q);
993}
994
995static void
996qdio_outbound_processing(struct qdio_q *q)
997{
998 __qdio_outbound_processing(q);
999}
1000
1001/************************* INBOUND ROUTINES *******************************/
1002
1003
Jesper Juhl77933d72005-07-27 11:46:09 -07001004static inline int
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005qdio_get_inbound_buffer_frontier(struct qdio_q *q)
1006{
Frank Pavlic8129ee12006-01-06 00:19:20 -08001007 struct qdio_irq *irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008 int f,f_mod_no;
1009 volatile char *slsb;
Frank Pavlic8129ee12006-01-06 00:19:20 -08001010 unsigned int count = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011 int first_not_to_check;
1012#ifdef CONFIG_QDIO_DEBUG
1013 char dbf_text[15];
1014#endif /* CONFIG_QDIO_DEBUG */
1015#ifdef QDIO_USE_PROCESSING_STATE
1016 int last_position=-1;
1017#endif /* QDIO_USE_PROCESSING_STATE */
1018
1019 QDIO_DBF_TEXT4(0,trace,"getibfro");
1020 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1021
Frank Pavlic8129ee12006-01-06 00:19:20 -08001022 irq = (struct qdio_irq *) q->irq_ptr;
1023 if (irq->is_qebsm)
1024 return qdio_qebsm_get_inbound_buffer_frontier(q);
1025
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026 slsb=&q->slsb.acc.val[0];
1027 f_mod_no=f=q->first_to_check;
1028 /*
1029 * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1030 * would return 0
1031 */
1032 first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
1033 (QDIO_MAX_BUFFERS_PER_Q-1));
1034
1035 /*
1036 * we don't use this one, as a PCI or we after a thin interrupt
1037 * will sync the queues
1038 */
1039 /* SYNC_MEMORY;*/
1040
1041check_next:
1042 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
1043 if (f==first_not_to_check)
1044 goto out;
1045 switch (slsb[f_mod_no]) {
1046
1047 /* CU_EMPTY means frontier is reached */
1048 case SLSB_CU_INPUT_EMPTY:
1049 QDIO_DBF_TEXT5(0,trace,"inptempt");
1050 break;
1051
1052 /* P_PRIMED means set slsb to P_PROCESSING and move on */
1053 case SLSB_P_INPUT_PRIMED:
1054 QDIO_DBF_TEXT5(0,trace,"inptprim");
1055
1056#ifdef QDIO_USE_PROCESSING_STATE
1057 /*
1058 * as soon as running under VM, polling the input queues will
1059 * kill VM in terms of CP overhead
1060 */
1061 if (q->siga_sync) {
Frank Pavlic8129ee12006-01-06 00:19:20 -08001062 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 } else {
1064 /* set the previous buffer to NOT_INIT. The current
1065 * buffer will be set to PROCESSING at the end of
1066 * this function to avoid further interrupts. */
1067 if (last_position>=0)
Frank Pavlic8129ee12006-01-06 00:19:20 -08001068 set_slsb(q, &last_position,
1069 SLSB_P_INPUT_NOT_INIT, &count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070 atomic_set(&q->polling,1);
1071 last_position=f_mod_no;
1072 }
1073#else /* QDIO_USE_PROCESSING_STATE */
Frank Pavlic8129ee12006-01-06 00:19:20 -08001074 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075#endif /* QDIO_USE_PROCESSING_STATE */
1076 /*
1077 * not needed, as the inbound queue will be synced on the next
1078 * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1079 */
1080 /*SYNC_MEMORY;*/
1081 f++;
1082 atomic_dec(&q->number_of_buffers_used);
1083 goto check_next;
1084
1085 case SLSB_P_INPUT_NOT_INIT:
1086 case SLSB_P_INPUT_PROCESSING:
1087 QDIO_DBF_TEXT5(0,trace,"inpnipro");
1088 break;
1089
1090 /* P_ERROR means frontier is reached, break and report error */
1091 case SLSB_P_INPUT_ERROR:
1092#ifdef CONFIG_QDIO_DEBUG
1093 sprintf(dbf_text,"inperr%2x",f_mod_no);
1094 QDIO_DBF_TEXT3(1,trace,dbf_text);
1095#endif /* CONFIG_QDIO_DEBUG */
1096 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
1097
1098 /* kind of process the buffer */
Frank Pavlic8129ee12006-01-06 00:19:20 -08001099 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001100
1101 if (q->qdio_error)
1102 q->error_status_flags|=
1103 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
1104 q->qdio_error=SLSB_P_INPUT_ERROR;
1105 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
1106
1107 /* we increment the frontier, as this buffer
1108 * was processed obviously */
1109 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1110 atomic_dec(&q->number_of_buffers_used);
1111
1112#ifdef QDIO_USE_PROCESSING_STATE
1113 last_position=-1;
1114#endif /* QDIO_USE_PROCESSING_STATE */
1115
1116 break;
1117
1118 /* everything else means frontier not changed (HALTED or so) */
1119 default:
1120 break;
1121 }
1122out:
1123 q->first_to_check=f_mod_no;
1124
1125#ifdef QDIO_USE_PROCESSING_STATE
1126 if (last_position>=0)
Frank Pavlic6981e932006-09-20 15:59:19 +02001127 set_slsb(q, &last_position, SLSB_P_INPUT_PROCESSING, &count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128#endif /* QDIO_USE_PROCESSING_STATE */
1129
1130 QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
1131
1132 return q->first_to_check;
1133}
1134
Jesper Juhl77933d72005-07-27 11:46:09 -07001135static inline int
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136qdio_has_inbound_q_moved(struct qdio_q *q)
1137{
1138 int i;
1139
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140 static int old_pcis=0;
1141 static int old_thinints=0;
1142
Ursula Braun34249d02006-12-08 15:54:18 +01001143 if (qdio_performance_stats) {
1144 if ((old_pcis==perf_stats.pcis)&&
1145 (old_thinints==perf_stats.thinints))
1146 perf_stats.start_time_inbound=NOW;
1147 else
1148 old_pcis=perf_stats.pcis;
1149 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150
1151 i=qdio_get_inbound_buffer_frontier(q);
1152 if ( (i!=GET_SAVED_FRONTIER(q)) ||
1153 (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
1154 SAVE_FRONTIER(q,i);
1155 if ((!q->siga_sync)&&(!q->hydra_gives_outbound_pcis))
1156 SAVE_TIMESTAMP(q);
1157
1158 QDIO_DBF_TEXT4(0,trace,"inhasmvd");
1159 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1160 return 1;
1161 } else {
1162 QDIO_DBF_TEXT4(0,trace,"inhsntmv");
1163 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1164 return 0;
1165 }
1166}
1167
1168/* means, no more buffers to be filled */
Jesper Juhl77933d72005-07-27 11:46:09 -07001169static inline int
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170tiqdio_is_inbound_q_done(struct qdio_q *q)
1171{
1172 int no_used;
Frank Pavlic8129ee12006-01-06 00:19:20 -08001173 unsigned int start_buf, count;
1174 unsigned char state = 0;
1175 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1176
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177#ifdef CONFIG_QDIO_DEBUG
1178 char dbf_text[15];
1179#endif
1180
1181 no_used=atomic_read(&q->number_of_buffers_used);
1182
1183 /* propagate the change from 82 to 80 through VM */
1184 SYNC_MEMORY;
1185
1186#ifdef CONFIG_QDIO_DEBUG
1187 if (no_used) {
1188 sprintf(dbf_text,"iqisnt%02x",no_used);
1189 QDIO_DBF_TEXT4(0,trace,dbf_text);
1190 } else {
1191 QDIO_DBF_TEXT4(0,trace,"iniqisdo");
1192 }
1193 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1194#endif /* CONFIG_QDIO_DEBUG */
1195
1196 if (!no_used)
1197 return 1;
Frank Pavlic15c73692006-02-20 18:28:12 -08001198 if (!q->siga_sync && !irq->is_qebsm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199 /* we'll check for more primed buffers in qeth_stop_polling */
1200 return 0;
Frank Pavlic8129ee12006-01-06 00:19:20 -08001201 if (irq->is_qebsm) {
1202 count = 1;
1203 start_buf = q->first_to_check;
1204 qdio_do_eqbs(q, &state, &start_buf, &count);
1205 } else
1206 state = q->slsb.acc.val[q->first_to_check];
1207 if (state != SLSB_P_INPUT_PRIMED)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001208 /*
1209 * nothing more to do, if next buffer is not PRIMED.
1210 * note that we did a SYNC_MEMORY before, that there
1211 * has been a sychnronization.
1212 * we will return 0 below, as there is nothing to do
1213 * (stop_polling not necessary, as we have not been
1214 * using the PROCESSING state
1215 */
1216 return 0;
1217
1218 /*
1219 * ok, the next input buffer is primed. that means, that device state
1220 * change indicator and adapter local summary are set, so we will find
1221 * it next time.
1222 * we will return 0 below, as there is nothing to do, except scheduling
1223 * ourselves for the next time.
1224 */
1225 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1226 tiqdio_sched_tl();
1227 return 0;
1228}
1229
Jesper Juhl77933d72005-07-27 11:46:09 -07001230static inline int
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231qdio_is_inbound_q_done(struct qdio_q *q)
1232{
1233 int no_used;
Frank Pavlic8129ee12006-01-06 00:19:20 -08001234 unsigned int start_buf, count;
1235 unsigned char state = 0;
1236 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1237
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238#ifdef CONFIG_QDIO_DEBUG
1239 char dbf_text[15];
1240#endif
1241
1242 no_used=atomic_read(&q->number_of_buffers_used);
1243
1244 /*
1245 * we need that one for synchronization with the adapter, as it
1246 * does a kind of PCI avoidance
1247 */
1248 SYNC_MEMORY;
1249
1250 if (!no_used) {
1251 QDIO_DBF_TEXT4(0,trace,"inqisdnA");
1252 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1253 QDIO_DBF_TEXT4(0,trace,dbf_text);
1254 return 1;
1255 }
Frank Pavlic8129ee12006-01-06 00:19:20 -08001256 if (irq->is_qebsm) {
1257 count = 1;
1258 start_buf = q->first_to_check;
1259 qdio_do_eqbs(q, &state, &start_buf, &count);
1260 } else
1261 state = q->slsb.acc.val[q->first_to_check];
1262 if (state == SLSB_P_INPUT_PRIMED) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263 /* we got something to do */
1264 QDIO_DBF_TEXT4(0,trace,"inqisntA");
1265 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1266 return 0;
1267 }
1268
1269 /* on VM, we don't poll, so the q is always done here */
1270 if (q->siga_sync)
1271 return 1;
1272 if (q->hydra_gives_outbound_pcis)
1273 return 1;
1274
1275 /*
1276 * at this point we know, that inbound first_to_check
1277 * has (probably) not moved (see qdio_inbound_processing)
1278 */
1279 if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) {
1280#ifdef CONFIG_QDIO_DEBUG
1281 QDIO_DBF_TEXT4(0,trace,"inqisdon");
1282 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1283 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1284 QDIO_DBF_TEXT4(0,trace,dbf_text);
1285#endif /* CONFIG_QDIO_DEBUG */
1286 return 1;
1287 } else {
1288#ifdef CONFIG_QDIO_DEBUG
1289 QDIO_DBF_TEXT4(0,trace,"inqisntd");
1290 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1291 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1292 QDIO_DBF_TEXT4(0,trace,dbf_text);
1293#endif /* CONFIG_QDIO_DEBUG */
1294 return 0;
1295 }
1296}
1297
Jesper Juhl77933d72005-07-27 11:46:09 -07001298static inline void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299qdio_kick_inbound_handler(struct qdio_q *q)
1300{
1301 int count, start, end, real_end, i;
1302#ifdef CONFIG_QDIO_DEBUG
1303 char dbf_text[15];
1304#endif
1305
1306 QDIO_DBF_TEXT4(0,trace,"kickinh");
1307 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1308
1309 start=q->first_element_to_kick;
1310 real_end=q->first_to_check;
1311 end=(real_end+QDIO_MAX_BUFFERS_PER_Q-1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1312
1313 i=start;
1314 count=0;
1315 while (1) {
1316 count++;
1317 if (i==end)
1318 break;
1319 i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1320 }
1321
1322#ifdef CONFIG_QDIO_DEBUG
1323 sprintf(dbf_text,"s=%2xc=%2x",start,count);
1324 QDIO_DBF_TEXT4(0,trace,dbf_text);
1325#endif /* CONFIG_QDIO_DEBUG */
1326
1327 if (likely(q->state==QDIO_IRQ_STATE_ACTIVE))
1328 q->handler(q->cdev,
1329 QDIO_STATUS_INBOUND_INT|q->error_status_flags,
1330 q->qdio_error,q->siga_error,q->q_no,start,count,
1331 q->int_parm);
1332
1333 /* for the next time: */
1334 q->first_element_to_kick=real_end;
1335 q->qdio_error=0;
1336 q->siga_error=0;
1337 q->error_status_flags=0;
1338
Ursula Braun34249d02006-12-08 15:54:18 +01001339 if (qdio_performance_stats) {
1340 perf_stats.inbound_time+=NOW-perf_stats.start_time_inbound;
1341 perf_stats.inbound_cnt++;
1342 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001343}
1344
1345static inline void
1346__tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
1347{
1348 struct qdio_irq *irq_ptr;
1349 struct qdio_q *oq;
1350 int i;
1351
1352 QDIO_DBF_TEXT4(0,trace,"iqinproc");
1353 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1354
1355 /*
1356 * we first want to reserve the q, so that we know, that we don't
1357 * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1358 * be set
1359 */
1360 if (unlikely(qdio_reserve_q(q))) {
1361 qdio_release_q(q);
Ursula Braun34249d02006-12-08 15:54:18 +01001362 if (qdio_performance_stats)
1363 ii_p_c++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001364 /*
1365 * as we might just be about to stop polling, we make
1366 * sure that we check again at least once more
1367 */
1368 tiqdio_sched_tl();
1369 return;
1370 }
Ursula Braun34249d02006-12-08 15:54:18 +01001371 if (qdio_performance_stats)
1372 ii_p_nc++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373 if (unlikely(atomic_read(&q->is_in_shutdown))) {
1374 qdio_unmark_q(q);
1375 goto out;
1376 }
1377
1378 /*
1379 * we reset spare_ind_was_set, when the queue does not use the
1380 * spare indicator
1381 */
1382 if (spare_ind_was_set)
1383 spare_ind_was_set = (q->dev_st_chg_ind == &spare_indicator);
1384
1385 if (!(*(q->dev_st_chg_ind)) && !spare_ind_was_set)
1386 goto out;
1387 /*
1388 * q->dev_st_chg_ind is the indicator, be it shared or not.
1389 * only clear it, if indicator is non-shared
1390 */
1391 if (!spare_ind_was_set)
1392 tiqdio_clear_summary_bit((__u32*)q->dev_st_chg_ind);
1393
1394 if (q->hydra_gives_outbound_pcis) {
1395 if (!q->siga_sync_done_on_thinints) {
1396 SYNC_MEMORY_ALL;
1397 } else if ((!q->siga_sync_done_on_outb_tis)&&
1398 (q->hydra_gives_outbound_pcis)) {
1399 SYNC_MEMORY_ALL_OUTB;
1400 }
1401 } else {
1402 SYNC_MEMORY;
1403 }
1404 /*
1405 * maybe we have to do work on our outbound queues... at least
1406 * we have to check the outbound-int-capable thinint-capable
1407 * queues
1408 */
1409 if (q->hydra_gives_outbound_pcis) {
1410 irq_ptr = (struct qdio_irq*)q->irq_ptr;
1411 for (i=0;i<irq_ptr->no_output_qs;i++) {
1412 oq = irq_ptr->output_qs[i];
Ursula Braun34249d02006-12-08 15:54:18 +01001413 if (!qdio_is_outbound_q_done(oq)) {
1414 if (qdio_performance_stats)
1415 perf_stats.tl_runs--;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416 __qdio_outbound_processing(oq);
Ursula Braun34249d02006-12-08 15:54:18 +01001417 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418 }
1419 }
1420
1421 if (!qdio_has_inbound_q_moved(q))
1422 goto out;
1423
1424 qdio_kick_inbound_handler(q);
1425 if (tiqdio_is_inbound_q_done(q))
1426 if (!qdio_stop_polling(q)) {
1427 /*
1428 * we set the flags to get into the stuff next time,
1429 * see also comment in qdio_stop_polling
1430 */
1431 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1432 tiqdio_sched_tl();
1433 }
1434out:
1435 qdio_release_q(q);
1436}
1437
1438static void
1439tiqdio_inbound_processing(struct qdio_q *q)
1440{
1441 __tiqdio_inbound_processing(q, atomic_read(&spare_indicator_usecount));
1442}
1443
1444static inline void
1445__qdio_inbound_processing(struct qdio_q *q)
1446{
1447 int q_laps=0;
1448
1449 QDIO_DBF_TEXT4(0,trace,"qinproc");
1450 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1451
1452 if (unlikely(qdio_reserve_q(q))) {
1453 qdio_release_q(q);
Ursula Braun34249d02006-12-08 15:54:18 +01001454 if (qdio_performance_stats)
1455 i_p_c++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456 /* as we're sissies, we'll check next time */
1457 if (likely(!atomic_read(&q->is_in_shutdown))) {
1458 qdio_mark_q(q);
1459 QDIO_DBF_TEXT4(0,trace,"busy,agn");
1460 }
1461 return;
1462 }
Ursula Braun34249d02006-12-08 15:54:18 +01001463 if (qdio_performance_stats) {
1464 i_p_nc++;
1465 perf_stats.tl_runs++;
1466 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001467
1468again:
1469 if (qdio_has_inbound_q_moved(q)) {
1470 qdio_kick_inbound_handler(q);
1471 if (!qdio_stop_polling(q)) {
1472 q_laps++;
1473 if (q_laps<QDIO_Q_LAPS)
1474 goto again;
1475 }
1476 qdio_mark_q(q);
1477 } else {
1478 if (!qdio_is_inbound_q_done(q))
1479 /* means poll time is not yet over */
1480 qdio_mark_q(q);
1481 }
1482
1483 qdio_release_q(q);
1484}
1485
1486static void
1487qdio_inbound_processing(struct qdio_q *q)
1488{
1489 __qdio_inbound_processing(q);
1490}
1491
1492/************************* MAIN ROUTINES *******************************/
1493
1494#ifdef QDIO_USE_PROCESSING_STATE
1495static inline int
1496tiqdio_reset_processing_state(struct qdio_q *q, int q_laps)
1497{
1498 if (!q) {
1499 tiqdio_sched_tl();
1500 return 0;
1501 }
1502
1503 /*
1504 * under VM, we have not used the PROCESSING state, so no
1505 * need to stop polling
1506 */
1507 if (q->siga_sync)
1508 return 2;
1509
1510 if (unlikely(qdio_reserve_q(q))) {
1511 qdio_release_q(q);
Ursula Braun34249d02006-12-08 15:54:18 +01001512 if (qdio_performance_stats)
1513 ii_p_c++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 /*
1515 * as we might just be about to stop polling, we make
1516 * sure that we check again at least once more
1517 */
1518
1519 /*
1520 * sanity -- we'd get here without setting the
1521 * dev st chg ind
1522 */
1523 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1524 tiqdio_sched_tl();
1525 return 0;
1526 }
1527 if (qdio_stop_polling(q)) {
1528 qdio_release_q(q);
1529 return 2;
1530 }
1531 if (q_laps<QDIO_Q_LAPS-1) {
1532 qdio_release_q(q);
1533 return 3;
1534 }
1535 /*
1536 * we set the flags to get into the stuff
1537 * next time, see also comment in qdio_stop_polling
1538 */
1539 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1540 tiqdio_sched_tl();
1541 qdio_release_q(q);
1542 return 1;
1543
1544}
1545#endif /* QDIO_USE_PROCESSING_STATE */
1546
1547static inline void
1548tiqdio_inbound_checks(void)
1549{
1550 struct qdio_q *q;
1551 int spare_ind_was_set=0;
1552#ifdef QDIO_USE_PROCESSING_STATE
1553 int q_laps=0;
1554#endif /* QDIO_USE_PROCESSING_STATE */
1555
1556 QDIO_DBF_TEXT4(0,trace,"iqdinbck");
1557 QDIO_DBF_TEXT5(0,trace,"iqlocsum");
1558
1559#ifdef QDIO_USE_PROCESSING_STATE
1560again:
1561#endif /* QDIO_USE_PROCESSING_STATE */
1562
1563 /* when the spare indicator is used and set, save that and clear it */
1564 if ((atomic_read(&spare_indicator_usecount)) && spare_indicator) {
1565 spare_ind_was_set = 1;
1566 tiqdio_clear_summary_bit((__u32*)&spare_indicator);
1567 }
1568
1569 q=(struct qdio_q*)tiq_list;
1570 do {
1571 if (!q)
1572 break;
1573 __tiqdio_inbound_processing(q, spare_ind_was_set);
1574 q=(struct qdio_q*)q->list_next;
1575 } while (q!=(struct qdio_q*)tiq_list);
1576
1577#ifdef QDIO_USE_PROCESSING_STATE
1578 q=(struct qdio_q*)tiq_list;
1579 do {
1580 int ret;
1581
1582 ret = tiqdio_reset_processing_state(q, q_laps);
1583 switch (ret) {
1584 case 0:
1585 return;
1586 case 1:
1587 q_laps++;
1588 case 2:
1589 q = (struct qdio_q*)q->list_next;
1590 break;
1591 default:
1592 q_laps++;
1593 goto again;
1594 }
1595 } while (q!=(struct qdio_q*)tiq_list);
1596#endif /* QDIO_USE_PROCESSING_STATE */
1597}
1598
1599static void
1600tiqdio_tl(unsigned long data)
1601{
1602 QDIO_DBF_TEXT4(0,trace,"iqdio_tl");
1603
Ursula Braun34249d02006-12-08 15:54:18 +01001604 if (qdio_performance_stats)
1605 perf_stats.tl_runs++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001606
1607 tiqdio_inbound_checks();
1608}
1609
1610/********************* GENERAL HELPER_ROUTINES ***********************/
1611
1612static void
1613qdio_release_irq_memory(struct qdio_irq *irq_ptr)
1614{
1615 int i;
1616
1617 for (i=0;i<QDIO_MAX_QUEUES_PER_IRQ;i++) {
1618 if (!irq_ptr->input_qs[i])
1619 goto next;
1620
Jesper Juhl17fd6822005-11-07 01:01:30 -08001621 kfree(irq_ptr->input_qs[i]->slib);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001622 kfree(irq_ptr->input_qs[i]);
1623
1624next:
1625 if (!irq_ptr->output_qs[i])
1626 continue;
1627
Jesper Juhl17fd6822005-11-07 01:01:30 -08001628 kfree(irq_ptr->output_qs[i]->slib);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629 kfree(irq_ptr->output_qs[i]);
1630
1631 }
1632 kfree(irq_ptr->qdr);
Christian Borntraeger40ac6b22006-04-27 18:40:11 -07001633 free_page((unsigned long) irq_ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001634}
1635
1636static void
1637qdio_set_impl_params(struct qdio_irq *irq_ptr,
1638 unsigned int qib_param_field_format,
1639 /* pointer to 128 bytes or NULL, if no param field */
1640 unsigned char *qib_param_field,
1641 /* pointer to no_queues*128 words of data or NULL */
1642 unsigned int no_input_qs,
1643 unsigned int no_output_qs,
1644 unsigned long *input_slib_elements,
1645 unsigned long *output_slib_elements)
1646{
1647 int i,j;
1648
1649 if (!irq_ptr)
1650 return;
1651
1652 irq_ptr->qib.pfmt=qib_param_field_format;
1653 if (qib_param_field)
1654 memcpy(irq_ptr->qib.parm,qib_param_field,
1655 QDIO_MAX_BUFFERS_PER_Q);
1656
1657 if (input_slib_elements)
1658 for (i=0;i<no_input_qs;i++) {
1659 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1660 irq_ptr->input_qs[i]->slib->slibe[j].parms=
1661 input_slib_elements[
1662 i*QDIO_MAX_BUFFERS_PER_Q+j];
1663 }
1664 if (output_slib_elements)
1665 for (i=0;i<no_output_qs;i++) {
1666 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1667 irq_ptr->output_qs[i]->slib->slibe[j].parms=
1668 output_slib_elements[
1669 i*QDIO_MAX_BUFFERS_PER_Q+j];
1670 }
1671}
1672
1673static int
1674qdio_alloc_qs(struct qdio_irq *irq_ptr,
1675 int no_input_qs, int no_output_qs)
1676{
1677 int i;
1678 struct qdio_q *q;
1679 int result=-ENOMEM;
1680
1681 for (i=0;i<no_input_qs;i++) {
Eric Sesterhenn88abaab2006-03-24 03:15:31 -08001682 q = kzalloc(sizeof(struct qdio_q), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683
1684 if (!q) {
1685 QDIO_PRINT_ERR("kmalloc of q failed!\n");
1686 goto out;
1687 }
1688
Eric Sesterhenn88abaab2006-03-24 03:15:31 -08001689 q->slib = kmalloc(PAGE_SIZE, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001690 if (!q->slib) {
1691 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1692 goto out;
1693 }
1694
1695 irq_ptr->input_qs[i]=q;
1696 }
1697
1698 for (i=0;i<no_output_qs;i++) {
Eric Sesterhenn88abaab2006-03-24 03:15:31 -08001699 q = kzalloc(sizeof(struct qdio_q), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001700
1701 if (!q) {
1702 goto out;
1703 }
1704
Linus Torvalds1da177e2005-04-16 15:20:36 -07001705 q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
1706 if (!q->slib) {
1707 QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1708 goto out;
1709 }
1710
1711 irq_ptr->output_qs[i]=q;
1712 }
1713
1714 result=0;
1715out:
1716 return result;
1717}
1718
1719static void
1720qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev,
1721 int no_input_qs, int no_output_qs,
1722 qdio_handler_t *input_handler,
1723 qdio_handler_t *output_handler,
1724 unsigned long int_parm,int q_format,
1725 unsigned long flags,
1726 void **inbound_sbals_array,
1727 void **outbound_sbals_array)
1728{
1729 struct qdio_q *q;
1730 int i,j;
1731 char dbf_text[20]; /* see qdio_initialize */
1732 void *ptr;
1733 int available;
1734
Cornelia Huck78964262006-10-11 15:31:38 +02001735 sprintf(dbf_text,"qfqs%4x",cdev->private->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736 QDIO_DBF_TEXT0(0,setup,dbf_text);
1737 for (i=0;i<no_input_qs;i++) {
1738 q=irq_ptr->input_qs[i];
1739
1740 memset(q,0,((char*)&q->slib)-((char*)q));
1741 sprintf(dbf_text,"in-q%4x",i);
1742 QDIO_DBF_TEXT0(0,setup,dbf_text);
1743 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1744
1745 memset(q->slib,0,PAGE_SIZE);
1746 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1747
1748 available=0;
1749
1750 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1751 q->sbal[j]=*(inbound_sbals_array++);
1752
1753 q->queue_type=q_format;
1754 q->int_parm=int_parm;
Cornelia Hucka8237fc2006-01-06 00:19:21 -08001755 q->schid = irq_ptr->schid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001756 q->irq_ptr = irq_ptr;
1757 q->cdev = cdev;
1758 q->mask=1<<(31-i);
1759 q->q_no=i;
1760 q->is_input_q=1;
1761 q->first_to_check=0;
1762 q->last_move_ftc=0;
1763 q->handler=input_handler;
1764 q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
1765
1766 q->tasklet.data=(unsigned long)q;
1767 /* q->is_thinint_q isn't valid at this time, but
1768 * irq_ptr->is_thinint_irq is */
1769 q->tasklet.func=(void(*)(unsigned long))
1770 ((irq_ptr->is_thinint_irq)?&tiqdio_inbound_processing:
1771 &qdio_inbound_processing);
1772
1773 /* actually this is not used for inbound queues. yet. */
1774 atomic_set(&q->busy_siga_counter,0);
1775 q->timing.busy_start=0;
1776
1777/* for (j=0;j<QDIO_STATS_NUMBER;j++)
1778 q->timing.last_transfer_times[j]=(qdio_get_micros()/
1779 QDIO_STATS_NUMBER)*j;
1780 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1781*/
1782
1783 /* fill in slib */
1784 if (i>0) irq_ptr->input_qs[i-1]->slib->nsliba=
1785 (unsigned long)(q->slib);
1786 q->slib->sla=(unsigned long)(q->sl);
1787 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1788
1789 /* fill in sl */
1790 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1791 q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1792
1793 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1794 ptr=(void*)q->sl;
1795 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1796 ptr=(void*)&q->slsb;
1797 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1798 ptr=(void*)q->sbal[0];
1799 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1800
1801 /* fill in slsb */
Frank Pavlic8129ee12006-01-06 00:19:20 -08001802 if (!irq_ptr->is_qebsm) {
1803 unsigned int count = 1;
1804 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
1805 set_slsb(q, &j, SLSB_P_INPUT_NOT_INIT, &count);
1806 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001807 }
1808
1809 for (i=0;i<no_output_qs;i++) {
1810 q=irq_ptr->output_qs[i];
1811 memset(q,0,((char*)&q->slib)-((char*)q));
1812
1813 sprintf(dbf_text,"outq%4x",i);
1814 QDIO_DBF_TEXT0(0,setup,dbf_text);
1815 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1816
1817 memset(q->slib,0,PAGE_SIZE);
1818 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1819
1820 available=0;
1821
1822 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1823 q->sbal[j]=*(outbound_sbals_array++);
1824
1825 q->queue_type=q_format;
Ursula Braun028cf912006-12-15 17:18:14 +01001826 if ((q->queue_type == QDIO_IQDIO_QFMT) &&
1827 (no_output_qs > 1) &&
1828 (i == no_output_qs-1))
1829 q->queue_type = QDIO_IQDIO_QFMT_ASYNCH;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830 q->int_parm=int_parm;
1831 q->is_input_q=0;
Cornelia Hucka8237fc2006-01-06 00:19:21 -08001832 q->schid = irq_ptr->schid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001833 q->cdev = cdev;
1834 q->irq_ptr = irq_ptr;
1835 q->mask=1<<(31-i);
1836 q->q_no=i;
1837 q->first_to_check=0;
1838 q->last_move_ftc=0;
1839 q->handler=output_handler;
1840
1841 q->tasklet.data=(unsigned long)q;
1842 q->tasklet.func=(void(*)(unsigned long))
1843 &qdio_outbound_processing;
1844
1845 atomic_set(&q->busy_siga_counter,0);
1846 q->timing.busy_start=0;
1847
1848 /* fill in slib */
1849 if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba=
1850 (unsigned long)(q->slib);
1851 q->slib->sla=(unsigned long)(q->sl);
1852 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1853
1854 /* fill in sl */
1855 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1856 q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1857
1858 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1859 ptr=(void*)q->sl;
1860 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1861 ptr=(void*)&q->slsb;
1862 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1863 ptr=(void*)q->sbal[0];
1864 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1865
1866 /* fill in slsb */
Frank Pavlic8129ee12006-01-06 00:19:20 -08001867 if (!irq_ptr->is_qebsm) {
1868 unsigned int count = 1;
1869 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
1870 set_slsb(q, &j, SLSB_P_OUTPUT_NOT_INIT, &count);
1871 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001872 }
1873}
1874
1875static void
1876qdio_fill_thresholds(struct qdio_irq *irq_ptr,
1877 unsigned int no_input_qs,
1878 unsigned int no_output_qs,
1879 unsigned int min_input_threshold,
1880 unsigned int max_input_threshold,
1881 unsigned int min_output_threshold,
1882 unsigned int max_output_threshold)
1883{
1884 int i;
1885 struct qdio_q *q;
1886
1887 for (i=0;i<no_input_qs;i++) {
1888 q=irq_ptr->input_qs[i];
1889 q->timing.threshold=max_input_threshold;
1890/* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1891 q->threshold_classes[j].threshold=
1892 min_input_threshold+
1893 (max_input_threshold-min_input_threshold)/
1894 QDIO_STATS_CLASSES;
1895 }
1896 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1897 }
1898 for (i=0;i<no_output_qs;i++) {
1899 q=irq_ptr->output_qs[i];
1900 q->timing.threshold=max_output_threshold;
1901/* for (j=0;j<QDIO_STATS_CLASSES;j++) {
1902 q->threshold_classes[j].threshold=
1903 min_output_threshold+
1904 (max_output_threshold-min_output_threshold)/
1905 QDIO_STATS_CLASSES;
1906 }
1907 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1908 }
1909}
1910
1911static int
1912tiqdio_thinint_handler(void)
1913{
1914 QDIO_DBF_TEXT4(0,trace,"thin_int");
1915
Ursula Braun34249d02006-12-08 15:54:18 +01001916 if (qdio_performance_stats) {
1917 perf_stats.thinints++;
1918 perf_stats.start_time_inbound=NOW;
1919 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920
1921 /* SVS only when needed:
1922 * issue SVS to benefit from iqdio interrupt avoidance
1923 * (SVS clears AISOI)*/
1924 if (!omit_svs)
1925 tiqdio_clear_global_summary();
1926
1927 tiqdio_inbound_checks();
1928 return 0;
1929}
1930
1931static void
1932qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state)
1933{
1934 int i;
1935#ifdef CONFIG_QDIO_DEBUG
1936 char dbf_text[15];
1937
1938 QDIO_DBF_TEXT5(0,trace,"newstate");
Cornelia Hucka8237fc2006-01-06 00:19:21 -08001939 sprintf(dbf_text,"%4x%4x",irq_ptr->schid.sch_no,state);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940 QDIO_DBF_TEXT5(0,trace,dbf_text);
1941#endif /* CONFIG_QDIO_DEBUG */
1942
1943 irq_ptr->state=state;
1944 for (i=0;i<irq_ptr->no_input_qs;i++)
1945 irq_ptr->input_qs[i]->state=state;
1946 for (i=0;i<irq_ptr->no_output_qs;i++)
1947 irq_ptr->output_qs[i]->state=state;
1948 mb();
1949}
1950
1951static inline void
Cornelia Hucka8237fc2006-01-06 00:19:21 -08001952qdio_irq_check_sense(struct subchannel_id schid, struct irb *irb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001953{
1954 char dbf_text[15];
1955
1956 if (irb->esw.esw0.erw.cons) {
Cornelia Hucka8237fc2006-01-06 00:19:21 -08001957 sprintf(dbf_text,"sens%4x",schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001958 QDIO_DBF_TEXT2(1,trace,dbf_text);
1959 QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN);
1960
1961 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
Ursula Braun9163bb22006-12-04 15:40:59 +01001962 QDIO_HEXDUMP16(WARN,"irb: ",irb);
1963 QDIO_HEXDUMP16(WARN,"sense data: ",irb->ecw);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964 }
1965
1966}
1967
1968static inline void
1969qdio_handle_pci(struct qdio_irq *irq_ptr)
1970{
1971 int i;
1972 struct qdio_q *q;
1973
Ursula Braun34249d02006-12-08 15:54:18 +01001974 if (qdio_performance_stats) {
1975 perf_stats.pcis++;
1976 perf_stats.start_time_inbound=NOW;
1977 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978 for (i=0;i<irq_ptr->no_input_qs;i++) {
1979 q=irq_ptr->input_qs[i];
1980 if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
1981 qdio_mark_q(q);
1982 else {
Ursula Braun34249d02006-12-08 15:54:18 +01001983 if (qdio_performance_stats)
1984 perf_stats.tl_runs--;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001985 __qdio_inbound_processing(q);
1986 }
1987 }
1988 if (!irq_ptr->hydra_gives_outbound_pcis)
1989 return;
1990 for (i=0;i<irq_ptr->no_output_qs;i++) {
1991 q=irq_ptr->output_qs[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001992 if (qdio_is_outbound_q_done(q))
1993 continue;
Ursula Braun34249d02006-12-08 15:54:18 +01001994 if (qdio_performance_stats)
1995 perf_stats.tl_runs--;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001996 if (!irq_ptr->sync_done_on_outb_pcis)
1997 SYNC_MEMORY;
1998 __qdio_outbound_processing(q);
1999 }
2000}
2001
2002static void qdio_establish_handle_irq(struct ccw_device*, int, int);
2003
2004static inline void
2005qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm,
2006 int cstat, int dstat)
2007{
2008 struct qdio_irq *irq_ptr;
2009 struct qdio_q *q;
2010 char dbf_text[15];
2011
2012 irq_ptr = cdev->private->qdio_data;
2013
2014 QDIO_DBF_TEXT2(1, trace, "ick2");
2015 sprintf(dbf_text,"%s", cdev->dev.bus_id);
2016 QDIO_DBF_TEXT2(1,trace,dbf_text);
2017 QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int));
2018 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2019 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2020 QDIO_PRINT_ERR("received check condition on activate " \
2021 "queues on device %s (cs=x%x, ds=x%x).\n",
2022 cdev->dev.bus_id, cstat, dstat);
2023 if (irq_ptr->no_input_qs) {
2024 q=irq_ptr->input_qs[0];
2025 } else if (irq_ptr->no_output_qs) {
2026 q=irq_ptr->output_qs[0];
2027 } else {
2028 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2029 cdev->dev.bus_id);
2030 goto omit_handler_call;
2031 }
2032 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
2033 QDIO_STATUS_LOOK_FOR_ERROR,
2034 0,0,0,-1,-1,q->int_parm);
2035omit_handler_call:
2036 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED);
2037
2038}
2039
2040static void
Martin Schwidefskyc1637532006-12-08 15:53:57 +01002041qdio_call_shutdown(struct work_struct *work)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042{
Martin Schwidefskyc1637532006-12-08 15:53:57 +01002043 struct ccw_device_private *priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044 struct ccw_device *cdev;
2045
Martin Schwidefskyc1637532006-12-08 15:53:57 +01002046 priv = container_of(work, struct ccw_device_private, kick_work);
2047 cdev = priv->cdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002048 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2049 put_device(&cdev->dev);
2050}
2051
2052static void
2053qdio_timeout_handler(struct ccw_device *cdev)
2054{
2055 struct qdio_irq *irq_ptr;
2056 char dbf_text[15];
2057
2058 QDIO_DBF_TEXT2(0, trace, "qtoh");
2059 sprintf(dbf_text, "%s", cdev->dev.bus_id);
2060 QDIO_DBF_TEXT2(0, trace, dbf_text);
2061
2062 irq_ptr = cdev->private->qdio_data;
2063 sprintf(dbf_text, "state:%d", irq_ptr->state);
2064 QDIO_DBF_TEXT2(0, trace, dbf_text);
2065
2066 switch (irq_ptr->state) {
2067 case QDIO_IRQ_STATE_INACTIVE:
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002068 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
2069 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002070 QDIO_DBF_TEXT2(1,setup,"eq:timeo");
2071 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2072 break;
2073 case QDIO_IRQ_STATE_CLEANUP:
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002074 QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
2075 "irq=0.%x.%x.\n",
2076 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2078 break;
2079 case QDIO_IRQ_STATE_ESTABLISHED:
2080 case QDIO_IRQ_STATE_ACTIVE:
2081 /* I/O has been terminated by common I/O layer. */
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002082 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2083 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084 QDIO_DBF_TEXT2(1, trace, "cio:term");
2085 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
2086 if (get_device(&cdev->dev)) {
2087 /* Can't call shutdown from interrupt context. */
2088 PREPARE_WORK(&cdev->private->kick_work,
Martin Schwidefskyc1637532006-12-08 15:53:57 +01002089 qdio_call_shutdown);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002090 queue_work(ccw_device_work, &cdev->private->kick_work);
2091 }
2092 break;
2093 default:
2094 BUG();
2095 }
2096 ccw_device_set_timeout(cdev, 0);
2097 wake_up(&cdev->private->wait_q);
2098}
2099
2100static void
2101qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
2102{
2103 struct qdio_irq *irq_ptr;
2104 int cstat,dstat;
2105 char dbf_text[15];
2106
2107#ifdef CONFIG_QDIO_DEBUG
2108 QDIO_DBF_TEXT4(0, trace, "qint");
2109 sprintf(dbf_text, "%s", cdev->dev.bus_id);
2110 QDIO_DBF_TEXT4(0, trace, dbf_text);
2111#endif /* CONFIG_QDIO_DEBUG */
2112
2113 if (!intparm) {
2114 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2115 "handler, device %s\n", cdev->dev.bus_id);
2116 return;
2117 }
2118
2119 irq_ptr = cdev->private->qdio_data;
2120 if (!irq_ptr) {
2121 QDIO_DBF_TEXT2(1, trace, "uint");
2122 sprintf(dbf_text,"%s", cdev->dev.bus_id);
2123 QDIO_DBF_TEXT2(1,trace,dbf_text);
2124 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2125 cdev->dev.bus_id);
2126 return;
2127 }
2128
2129 if (IS_ERR(irb)) {
2130 /* Currently running i/o is in error. */
2131 switch (PTR_ERR(irb)) {
2132 case -EIO:
2133 QDIO_PRINT_ERR("i/o error on device %s\n",
2134 cdev->dev.bus_id);
2135 return;
2136 case -ETIMEDOUT:
2137 qdio_timeout_handler(cdev);
2138 return;
2139 default:
2140 QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2141 PTR_ERR(irb), cdev->dev.bus_id);
2142 return;
2143 }
2144 }
2145
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002146 qdio_irq_check_sense(irq_ptr->schid, irb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002147
2148#ifdef CONFIG_QDIO_DEBUG
2149 sprintf(dbf_text, "state:%d", irq_ptr->state);
2150 QDIO_DBF_TEXT4(0, trace, dbf_text);
2151#endif /* CONFIG_QDIO_DEBUG */
2152
2153 cstat = irb->scsw.cstat;
2154 dstat = irb->scsw.dstat;
2155
2156 switch (irq_ptr->state) {
2157 case QDIO_IRQ_STATE_INACTIVE:
2158 qdio_establish_handle_irq(cdev, cstat, dstat);
2159 break;
2160
2161 case QDIO_IRQ_STATE_CLEANUP:
2162 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2163 break;
2164
2165 case QDIO_IRQ_STATE_ESTABLISHED:
2166 case QDIO_IRQ_STATE_ACTIVE:
2167 if (cstat & SCHN_STAT_PCI) {
2168 qdio_handle_pci(irq_ptr);
2169 break;
2170 }
2171
2172 if ((cstat&~SCHN_STAT_PCI)||dstat) {
2173 qdio_handle_activate_check(cdev, intparm, cstat, dstat);
2174 break;
2175 }
2176 default:
2177 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2178 "device %s?!\n",
2179 irq_ptr->state, cdev->dev.bus_id);
2180 }
2181 wake_up(&cdev->private->wait_q);
2182
2183}
2184
2185int
2186qdio_synchronize(struct ccw_device *cdev, unsigned int flags,
2187 unsigned int queue_number)
2188{
Frank Pavlic8129ee12006-01-06 00:19:20 -08002189 int cc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002190 struct qdio_q *q;
2191 struct qdio_irq *irq_ptr;
2192 void *ptr;
2193#ifdef CONFIG_QDIO_DEBUG
2194 char dbf_text[15]="SyncXXXX";
2195#endif
2196
2197 irq_ptr = cdev->private->qdio_data;
2198 if (!irq_ptr)
2199 return -ENODEV;
2200
2201#ifdef CONFIG_QDIO_DEBUG
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002202 *((int*)(&dbf_text[4])) = irq_ptr->schid.sch_no;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002203 QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2204 *((int*)(&dbf_text[0]))=flags;
2205 *((int*)(&dbf_text[4]))=queue_number;
2206 QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2207#endif /* CONFIG_QDIO_DEBUG */
2208
2209 if (flags&QDIO_FLAG_SYNC_INPUT) {
2210 q=irq_ptr->input_qs[queue_number];
2211 if (!q)
2212 return -EINVAL;
Frank Pavlic8129ee12006-01-06 00:19:20 -08002213 if (!(irq_ptr->is_qebsm))
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002214 cc = do_siga_sync(q->schid, 0, q->mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002215 } else if (flags&QDIO_FLAG_SYNC_OUTPUT) {
2216 q=irq_ptr->output_qs[queue_number];
2217 if (!q)
2218 return -EINVAL;
Frank Pavlic8129ee12006-01-06 00:19:20 -08002219 if (!(irq_ptr->is_qebsm))
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002220 cc = do_siga_sync(q->schid, q->mask, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002221 } else
2222 return -EINVAL;
2223
2224 ptr=&cc;
2225 if (cc)
2226 QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int));
2227
2228 return cc;
2229}
2230
Frank Pavlic8129ee12006-01-06 00:19:20 -08002231static inline void
2232qdio_check_subchannel_qebsm(struct qdio_irq *irq_ptr, unsigned char qdioac,
2233 unsigned long token)
2234{
2235 struct qdio_q *q;
2236 int i;
2237 unsigned int count, start_buf;
2238 char dbf_text[15];
2239
2240 /*check if QEBSM is disabled */
2241 if (!(irq_ptr->is_qebsm) || !(qdioac & 0x01)) {
2242 irq_ptr->is_qebsm = 0;
2243 irq_ptr->sch_token = 0;
2244 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2245 QDIO_DBF_TEXT0(0,setup,"noV=V");
2246 return;
2247 }
2248 irq_ptr->sch_token = token;
2249 /*input queue*/
2250 for (i = 0; i < irq_ptr->no_input_qs;i++) {
2251 q = irq_ptr->input_qs[i];
2252 count = QDIO_MAX_BUFFERS_PER_Q;
2253 start_buf = 0;
2254 set_slsb(q, &start_buf, SLSB_P_INPUT_NOT_INIT, &count);
2255 }
2256 sprintf(dbf_text,"V=V:%2x",irq_ptr->is_qebsm);
2257 QDIO_DBF_TEXT0(0,setup,dbf_text);
2258 sprintf(dbf_text,"%8lx",irq_ptr->sch_token);
2259 QDIO_DBF_TEXT0(0,setup,dbf_text);
2260 /*output queue*/
2261 for (i = 0; i < irq_ptr->no_output_qs; i++) {
2262 q = irq_ptr->output_qs[i];
2263 count = QDIO_MAX_BUFFERS_PER_Q;
2264 start_buf = 0;
2265 set_slsb(q, &start_buf, SLSB_P_OUTPUT_NOT_INIT, &count);
2266 }
2267}
2268
2269static void
2270qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002271{
2272 int result;
2273 unsigned char qdioac;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002274 struct {
2275 struct chsc_header request;
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002276 u16 reserved1:10;
2277 u16 ssid:2;
2278 u16 fmt:4;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002279 u16 first_sch;
2280 u16 reserved2;
2281 u16 last_sch;
2282 u32 reserved3;
2283 struct chsc_header response;
2284 u32 reserved4;
2285 u8 flags;
2286 u8 reserved5;
2287 u16 sch;
2288 u8 qfmt;
Frank Pavlic8129ee12006-01-06 00:19:20 -08002289 u8 parm;
2290 u8 qdioac1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002291 u8 sch_class;
2292 u8 reserved7;
2293 u8 icnt;
2294 u8 reserved8;
2295 u8 ocnt;
Frank Pavlic8129ee12006-01-06 00:19:20 -08002296 u8 reserved9;
2297 u8 mbccnt;
2298 u16 qdioac2;
2299 u64 sch_token;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002300 } *ssqd_area;
2301
Frank Pavlic8129ee12006-01-06 00:19:20 -08002302 QDIO_DBF_TEXT0(0,setup,"getssqd");
2303 qdioac = 0;
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -07002304 ssqd_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002305 if (!ssqd_area) {
2306 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002307 "SIGAs for sch x%x.\n", irq_ptr->schid.sch_no);
Frank Pavlic8129ee12006-01-06 00:19:20 -08002308 irq_ptr->qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2309 CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2310 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2311 irq_ptr->is_qebsm = 0;
2312 irq_ptr->sch_token = 0;
2313 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2314 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002315 }
Frank Pavlic8129ee12006-01-06 00:19:20 -08002316
Linus Torvalds1da177e2005-04-16 15:20:36 -07002317 ssqd_area->request = (struct chsc_header) {
2318 .length = 0x0010,
2319 .code = 0x0024,
2320 };
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002321 ssqd_area->first_sch = irq_ptr->schid.sch_no;
2322 ssqd_area->last_sch = irq_ptr->schid.sch_no;
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002323 ssqd_area->ssid = irq_ptr->schid.ssid;
Frank Pavlic8129ee12006-01-06 00:19:20 -08002324 result = chsc(ssqd_area);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002325
2326 if (result) {
2327 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002328 "SIGAs for sch 0.%x.%x.\n", result,
2329 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002330 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2331 CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2332 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
Frank Pavlic8129ee12006-01-06 00:19:20 -08002333 irq_ptr->is_qebsm = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002334 goto out;
2335 }
2336
2337 if (ssqd_area->response.code != QDIO_CHSC_RESPONSE_CODE_OK) {
2338 QDIO_PRINT_WARN("response upon checking SIGA needs " \
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002339 "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n",
2340 ssqd_area->response.code,
2341 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002342 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2343 CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2344 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
Frank Pavlic8129ee12006-01-06 00:19:20 -08002345 irq_ptr->is_qebsm = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002346 goto out;
2347 }
2348 if (!(ssqd_area->flags & CHSC_FLAG_QDIO_CAPABILITY) ||
2349 !(ssqd_area->flags & CHSC_FLAG_VALIDITY) ||
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002350 (ssqd_area->sch != irq_ptr->schid.sch_no)) {
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002351 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2352 "using all SIGAs.\n",
2353 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002354 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2355 CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2356 CHSC_FLAG_SIGA_SYNC_NECESSARY; /* worst case */
Frank Pavlic8129ee12006-01-06 00:19:20 -08002357 irq_ptr->is_qebsm = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002358 goto out;
2359 }
Frank Pavlic8129ee12006-01-06 00:19:20 -08002360 qdioac = ssqd_area->qdioac1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002361out:
Frank Pavlic8129ee12006-01-06 00:19:20 -08002362 qdio_check_subchannel_qebsm(irq_ptr, qdioac,
2363 ssqd_area->sch_token);
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -07002364 mempool_free(ssqd_area, qdio_mempool_scssc);
Frank Pavlic8129ee12006-01-06 00:19:20 -08002365 irq_ptr->qdioac = qdioac;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002366}
2367
2368static unsigned int
2369tiqdio_check_chsc_availability(void)
2370{
2371 char dbf_text[15];
2372
2373 if (!css_characteristics_avail)
2374 return -EIO;
2375
2376 /* Check for bit 41. */
2377 if (!css_general_characteristics.aif) {
2378 QDIO_PRINT_WARN("Adapter interruption facility not " \
2379 "installed.\n");
2380 return -ENOENT;
2381 }
2382
2383 /* Check for bits 107 and 108. */
2384 if (!css_chsc_characteristics.scssc ||
2385 !css_chsc_characteristics.scsscf) {
2386 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2387 "not available.\n");
2388 return -ENOENT;
2389 }
2390
2391 /* Check for OSA/FCP thin interrupts (bit 67). */
2392 hydra_thinints = css_general_characteristics.aif_osa;
2393 sprintf(dbf_text,"hydrati%1x", hydra_thinints);
2394 QDIO_DBF_TEXT0(0,setup,dbf_text);
2395
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -08002396#ifdef CONFIG_64BIT
Frank Pavlic8129ee12006-01-06 00:19:20 -08002397 /* Check for QEBSM support in general (bit 58). */
2398 is_passthrough = css_general_characteristics.qebsm;
2399#endif
2400 sprintf(dbf_text,"cssQBS:%1x", is_passthrough);
2401 QDIO_DBF_TEXT0(0,setup,dbf_text);
2402
Linus Torvalds1da177e2005-04-16 15:20:36 -07002403 /* Check for aif time delay disablement fac (bit 56). If installed,
2404 * omit svs even under lpar (good point by rick again) */
2405 omit_svs = css_general_characteristics.aif_tdd;
2406 sprintf(dbf_text,"omitsvs%1x", omit_svs);
2407 QDIO_DBF_TEXT0(0,setup,dbf_text);
2408 return 0;
2409}
2410
2411
2412static unsigned int
2413tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2414{
2415 unsigned long real_addr_local_summary_bit;
2416 unsigned long real_addr_dev_st_chg_ind;
2417 void *ptr;
2418 char dbf_text[15];
2419
2420 unsigned int resp_code;
2421 int result;
2422
2423 struct {
2424 struct chsc_header request;
2425 u16 operation_code;
2426 u16 reserved1;
2427 u32 reserved2;
2428 u32 reserved3;
2429 u64 summary_indicator_addr;
2430 u64 subchannel_indicator_addr;
2431 u32 ks:4;
2432 u32 kc:4;
2433 u32 reserved4:21;
2434 u32 isc:3;
2435 u32 word_with_d_bit;
2436 /* set to 0x10000000 to enable
2437 * time delay disablement facility */
2438 u32 reserved5;
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002439 struct subchannel_id schid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002440 u32 reserved6[1004];
2441 struct chsc_header response;
2442 u32 reserved7;
2443 } *scssc_area;
2444
2445 if (!irq_ptr->is_thinint_irq)
2446 return -ENODEV;
2447
2448 if (reset_to_zero) {
2449 real_addr_local_summary_bit=0;
2450 real_addr_dev_st_chg_ind=0;
2451 } else {
2452 real_addr_local_summary_bit=
2453 virt_to_phys((volatile void *)indicators);
2454 real_addr_dev_st_chg_ind=
2455 virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
2456 }
2457
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -07002458 scssc_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002459 if (!scssc_area) {
2460 QDIO_PRINT_WARN("No memory for setting indicators on " \
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002461 "subchannel 0.%x.%x.\n",
2462 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002463 return -ENOMEM;
2464 }
2465 scssc_area->request = (struct chsc_header) {
2466 .length = 0x0fe0,
2467 .code = 0x0021,
2468 };
2469 scssc_area->operation_code = 0;
2470
2471 scssc_area->summary_indicator_addr = real_addr_local_summary_bit;
2472 scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind;
2473 scssc_area->ks = QDIO_STORAGE_KEY;
2474 scssc_area->kc = QDIO_STORAGE_KEY;
2475 scssc_area->isc = TIQDIO_THININT_ISC;
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002476 scssc_area->schid = irq_ptr->schid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002477 /* enables the time delay disablement facility. Don't care
2478 * whether it is really there (i.e. we haven't checked for
2479 * it) */
2480 if (css_general_characteristics.aif_tdd)
2481 scssc_area->word_with_d_bit = 0x10000000;
2482 else
2483 QDIO_PRINT_WARN("Time delay disablement facility " \
2484 "not available\n");
2485
Linus Torvalds1da177e2005-04-16 15:20:36 -07002486 result = chsc(scssc_area);
2487 if (result) {
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002488 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2489 "cc=%i.\n",
2490 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,result);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002491 result = -EIO;
2492 goto out;
2493 }
2494
2495 resp_code = scssc_area->response.code;
2496 if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2497 QDIO_PRINT_WARN("response upon setting indicators " \
2498 "is 0x%x.\n",resp_code);
2499 sprintf(dbf_text,"sidR%4x",resp_code);
2500 QDIO_DBF_TEXT1(0,trace,dbf_text);
2501 QDIO_DBF_TEXT1(0,setup,dbf_text);
2502 ptr=&scssc_area->response;
2503 QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN);
2504 result = -EIO;
2505 goto out;
2506 }
2507
2508 QDIO_DBF_TEXT2(0,setup,"setscind");
2509 QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit,
2510 sizeof(unsigned long));
2511 QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
2512 result = 0;
2513out:
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -07002514 mempool_free(scssc_area, qdio_mempool_scssc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002515 return result;
2516
2517}
2518
2519static unsigned int
2520tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2521{
2522 unsigned int resp_code;
2523 int result;
2524 void *ptr;
2525 char dbf_text[15];
2526
2527 struct {
2528 struct chsc_header request;
2529 u16 operation_code;
2530 u16 reserved1;
2531 u32 reserved2;
2532 u32 reserved3;
2533 u32 reserved4[2];
2534 u32 delay_target;
2535 u32 reserved5[1009];
2536 struct chsc_header response;
2537 u32 reserved6;
2538 } *scsscf_area;
2539
2540 if (!irq_ptr->is_thinint_irq)
2541 return -ENODEV;
2542
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -07002543 scsscf_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002544 if (!scsscf_area) {
2545 QDIO_PRINT_WARN("No memory for setting delay target on " \
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002546 "subchannel 0.%x.%x.\n",
2547 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002548 return -ENOMEM;
2549 }
2550 scsscf_area->request = (struct chsc_header) {
2551 .length = 0x0fe0,
2552 .code = 0x1027,
2553 };
2554
2555 scsscf_area->delay_target = delay_target<<16;
2556
2557 result=chsc(scsscf_area);
2558 if (result) {
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002559 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2560 "cc=%i. Continuing.\n",
2561 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002562 result);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002563 result = -EIO;
2564 goto out;
2565 }
2566
2567 resp_code = scsscf_area->response.code;
2568 if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2569 QDIO_PRINT_WARN("response upon setting delay target " \
2570 "is 0x%x. Continuing.\n",resp_code);
2571 sprintf(dbf_text,"sdtR%4x",resp_code);
2572 QDIO_DBF_TEXT1(0,trace,dbf_text);
2573 QDIO_DBF_TEXT1(0,setup,dbf_text);
2574 ptr=&scsscf_area->response;
2575 QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN);
2576 }
2577 QDIO_DBF_TEXT2(0,trace,"delytrgt");
2578 QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
2579 result = 0; /* not critical */
2580out:
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -07002581 mempool_free(scsscf_area, qdio_mempool_scssc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002582 return result;
2583}
2584
2585int
2586qdio_cleanup(struct ccw_device *cdev, int how)
2587{
2588 struct qdio_irq *irq_ptr;
2589 char dbf_text[15];
2590 int rc;
2591
2592 irq_ptr = cdev->private->qdio_data;
2593 if (!irq_ptr)
2594 return -ENODEV;
2595
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002596 sprintf(dbf_text,"qcln%4x",irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002597 QDIO_DBF_TEXT1(0,trace,dbf_text);
2598 QDIO_DBF_TEXT0(0,setup,dbf_text);
2599
2600 rc = qdio_shutdown(cdev, how);
2601 if ((rc == 0) || (rc == -EINPROGRESS))
2602 rc = qdio_free(cdev);
2603 return rc;
2604}
2605
2606int
2607qdio_shutdown(struct ccw_device *cdev, int how)
2608{
2609 struct qdio_irq *irq_ptr;
2610 int i;
2611 int result = 0;
2612 int rc;
2613 unsigned long flags;
2614 int timeout;
2615 char dbf_text[15];
2616
2617 irq_ptr = cdev->private->qdio_data;
2618 if (!irq_ptr)
2619 return -ENODEV;
2620
2621 down(&irq_ptr->setting_up_sema);
2622
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002623 sprintf(dbf_text,"qsqs%4x",irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002624 QDIO_DBF_TEXT1(0,trace,dbf_text);
2625 QDIO_DBF_TEXT0(0,setup,dbf_text);
2626
2627 /* mark all qs as uninteresting */
2628 for (i=0;i<irq_ptr->no_input_qs;i++)
2629 atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1);
2630
2631 for (i=0;i<irq_ptr->no_output_qs;i++)
2632 atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1);
2633
2634 tasklet_kill(&tiqdio_tasklet);
2635
2636 for (i=0;i<irq_ptr->no_input_qs;i++) {
2637 qdio_unmark_q(irq_ptr->input_qs[i]);
2638 tasklet_kill(&irq_ptr->input_qs[i]->tasklet);
2639 wait_event_interruptible_timeout(cdev->private->wait_q,
2640 !atomic_read(&irq_ptr->
2641 input_qs[i]->
2642 use_count),
2643 QDIO_NO_USE_COUNT_TIMEOUT);
2644 if (atomic_read(&irq_ptr->input_qs[i]->use_count))
2645 result=-EINPROGRESS;
2646 }
2647
2648 for (i=0;i<irq_ptr->no_output_qs;i++) {
2649 tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
2650 wait_event_interruptible_timeout(cdev->private->wait_q,
2651 !atomic_read(&irq_ptr->
2652 output_qs[i]->
2653 use_count),
2654 QDIO_NO_USE_COUNT_TIMEOUT);
2655 if (atomic_read(&irq_ptr->output_qs[i]->use_count))
2656 result=-EINPROGRESS;
2657 }
2658
2659 /* cleanup subchannel */
2660 spin_lock_irqsave(get_ccwdev_lock(cdev),flags);
2661 if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) {
2662 rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
2663 timeout=QDIO_CLEANUP_CLEAR_TIMEOUT;
2664 } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) {
2665 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2666 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2667 } else { /* default behaviour */
2668 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2669 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2670 }
2671 if (rc == -ENODEV) {
2672 /* No need to wait for device no longer present. */
2673 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2674 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2675 } else if (((void *)cdev->handler != (void *)qdio_handler) && rc == 0) {
2676 /*
2677 * Whoever put another handler there, has to cope with the
2678 * interrupt theirself. Might happen if qdio_shutdown was
2679 * called on already shutdown queues, but this shouldn't have
2680 * bad side effects.
2681 */
2682 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2683 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2684 } else if (rc == 0) {
2685 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
2686 ccw_device_set_timeout(cdev, timeout);
2687 spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags);
2688
2689 wait_event(cdev->private->wait_q,
2690 irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
2691 irq_ptr->state == QDIO_IRQ_STATE_ERR);
2692 } else {
2693 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2694 "device %s\n", result, cdev->dev.bus_id);
2695 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2696 result = rc;
2697 goto out;
2698 }
2699 if (irq_ptr->is_thinint_irq) {
2700 qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind);
2701 tiqdio_set_subchannel_ind(irq_ptr,1);
2702 /* reset adapter interrupt indicators */
2703 }
2704
2705 /* exchange int handlers, if necessary */
2706 if ((void*)cdev->handler == (void*)qdio_handler)
2707 cdev->handler=irq_ptr->original_int_handler;
2708
2709 /* Ignore errors. */
2710 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2711 ccw_device_set_timeout(cdev, 0);
2712out:
2713 up(&irq_ptr->setting_up_sema);
2714 return result;
2715}
2716
2717int
2718qdio_free(struct ccw_device *cdev)
2719{
2720 struct qdio_irq *irq_ptr;
2721 char dbf_text[15];
2722
2723 irq_ptr = cdev->private->qdio_data;
2724 if (!irq_ptr)
2725 return -ENODEV;
2726
2727 down(&irq_ptr->setting_up_sema);
2728
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002729 sprintf(dbf_text,"qfqs%4x",irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002730 QDIO_DBF_TEXT1(0,trace,dbf_text);
2731 QDIO_DBF_TEXT0(0,setup,dbf_text);
2732
Heiko Carstensd2c993d2006-07-12 16:41:55 +02002733 cdev->private->qdio_data = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002734
2735 up(&irq_ptr->setting_up_sema);
2736
2737 qdio_release_irq_memory(irq_ptr);
2738 module_put(THIS_MODULE);
2739 return 0;
2740}
2741
2742static inline void
2743qdio_allocate_do_dbf(struct qdio_initialize *init_data)
2744{
2745 char dbf_text[20]; /* if a printf printed out more than 8 chars */
2746
2747 sprintf(dbf_text,"qfmt:%x",init_data->q_format);
2748 QDIO_DBF_TEXT0(0,setup,dbf_text);
2749 QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8);
2750 sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format);
2751 QDIO_DBF_TEXT0(0,setup,dbf_text);
2752 QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*));
2753 QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*));
2754 QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*));
2755 sprintf(dbf_text,"miit%4x",init_data->min_input_threshold);
2756 QDIO_DBF_TEXT0(0,setup,dbf_text);
2757 sprintf(dbf_text,"mait%4x",init_data->max_input_threshold);
2758 QDIO_DBF_TEXT0(0,setup,dbf_text);
2759 sprintf(dbf_text,"miot%4x",init_data->min_output_threshold);
2760 QDIO_DBF_TEXT0(0,setup,dbf_text);
2761 sprintf(dbf_text,"maot%4x",init_data->max_output_threshold);
2762 QDIO_DBF_TEXT0(0,setup,dbf_text);
2763 sprintf(dbf_text,"niq:%4x",init_data->no_input_qs);
2764 QDIO_DBF_TEXT0(0,setup,dbf_text);
2765 sprintf(dbf_text,"noq:%4x",init_data->no_output_qs);
2766 QDIO_DBF_TEXT0(0,setup,dbf_text);
2767 QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*));
2768 QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*));
2769 QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long));
2770 QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long));
2771 QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*));
2772 QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*));
2773}
2774
2775static inline void
2776qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt)
2777{
2778 irq_ptr->input_qs[i]->is_iqdio_q = iqfmt;
2779 irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2780
2781 irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib);
2782
2783 irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl);
2784
2785 irq_ptr->qdr->qdf0[i].slsba=
2786 (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]);
2787
2788 irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY;
2789 irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY;
2790 irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY;
2791 irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY;
2792}
2793
2794static inline void
2795qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i,
2796 int j, int iqfmt)
2797{
2798 irq_ptr->output_qs[i]->is_iqdio_q = iqfmt;
2799 irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2800
2801 irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib);
2802
2803 irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl);
2804
2805 irq_ptr->qdr->qdf0[i+j].slsba=
2806 (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]);
2807
2808 irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY;
2809 irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY;
2810 irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY;
2811 irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY;
2812}
2813
2814
2815static inline void
2816qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr)
2817{
2818 int i;
2819
2820 for (i=0;i<irq_ptr->no_input_qs;i++) {
2821 irq_ptr->input_qs[i]->siga_sync=
2822 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2823 irq_ptr->input_qs[i]->siga_in=
2824 irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2825 irq_ptr->input_qs[i]->siga_out=
2826 irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2827 irq_ptr->input_qs[i]->siga_sync_done_on_thinints=
2828 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2829 irq_ptr->input_qs[i]->hydra_gives_outbound_pcis=
2830 irq_ptr->hydra_gives_outbound_pcis;
2831 irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis=
2832 ((irq_ptr->qdioac&
2833 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2834 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2835 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2836 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2837
2838 }
2839}
2840
2841static inline void
2842qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr)
2843{
2844 int i;
2845
2846 for (i=0;i<irq_ptr->no_output_qs;i++) {
2847 irq_ptr->output_qs[i]->siga_sync=
2848 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2849 irq_ptr->output_qs[i]->siga_in=
2850 irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2851 irq_ptr->output_qs[i]->siga_out=
2852 irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2853 irq_ptr->output_qs[i]->siga_sync_done_on_thinints=
2854 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2855 irq_ptr->output_qs[i]->hydra_gives_outbound_pcis=
2856 irq_ptr->hydra_gives_outbound_pcis;
2857 irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis=
2858 ((irq_ptr->qdioac&
2859 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2860 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2861 (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2862 CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2863
2864 }
2865}
2866
2867static inline int
2868qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat,
2869 int dstat)
2870{
2871 char dbf_text[15];
2872 struct qdio_irq *irq_ptr;
2873
2874 irq_ptr = cdev->private->qdio_data;
2875
2876 if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) {
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002877 sprintf(dbf_text,"ick1%4x",irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002878 QDIO_DBF_TEXT2(1,trace,dbf_text);
2879 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2880 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2881 QDIO_PRINT_ERR("received check condition on establish " \
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002882 "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2883 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2884 cstat,dstat);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002885 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR);
2886 }
2887
2888 if (!(dstat & DEV_STAT_DEV_END)) {
2889 QDIO_DBF_TEXT2(1,setup,"eq:no de");
2890 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2891 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002892 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
Linus Torvalds1da177e2005-04-16 15:20:36 -07002893 "device end: dstat=%02x, cstat=%02x\n",
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002894 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2895 dstat, cstat);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002896 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2897 return 1;
2898 }
2899
2900 if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) {
2901 QDIO_DBF_TEXT2(1,setup,"eq:badio");
2902 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2903 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002904 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
Linus Torvalds1da177e2005-04-16 15:20:36 -07002905 "the following devstat: dstat=%02x, "
Cornelia Huckfb6958a2006-01-06 00:19:25 -08002906 "cstat=%02x\n", irq_ptr->schid.ssid,
Cornelia Hucka8237fc2006-01-06 00:19:21 -08002907 irq_ptr->schid.sch_no, dstat, cstat);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002908 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2909 return 1;
2910 }
2911 return 0;
2912}
2913
2914static void
2915qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat)
2916{
2917 struct qdio_irq *irq_ptr;
2918 char dbf_text[15];
2919
2920 irq_ptr = cdev->private->qdio_data;
2921
Cornelia Huck78964262006-10-11 15:31:38 +02002922 sprintf(dbf_text,"qehi%4x",cdev->private->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002923 QDIO_DBF_TEXT0(0,setup,dbf_text);
2924 QDIO_DBF_TEXT0(0,trace,dbf_text);
2925
2926 if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat)) {
2927 ccw_device_set_timeout(cdev, 0);
2928 return;
2929 }
2930
2931 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED);
2932 ccw_device_set_timeout(cdev, 0);
2933}
2934
2935int
2936qdio_initialize(struct qdio_initialize *init_data)
2937{
2938 int rc;
2939 char dbf_text[15];
2940
Cornelia Huck78964262006-10-11 15:31:38 +02002941 sprintf(dbf_text,"qini%4x",init_data->cdev->private->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002942 QDIO_DBF_TEXT0(0,setup,dbf_text);
2943 QDIO_DBF_TEXT0(0,trace,dbf_text);
2944
2945 rc = qdio_allocate(init_data);
2946 if (rc == 0) {
2947 rc = qdio_establish(init_data);
2948 if (rc != 0)
2949 qdio_free(init_data->cdev);
2950 }
2951
2952 return rc;
2953}
2954
2955
2956int
2957qdio_allocate(struct qdio_initialize *init_data)
2958{
2959 struct qdio_irq *irq_ptr;
2960 char dbf_text[15];
2961
Cornelia Huck78964262006-10-11 15:31:38 +02002962 sprintf(dbf_text,"qalc%4x",init_data->cdev->private->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002963 QDIO_DBF_TEXT0(0,setup,dbf_text);
2964 QDIO_DBF_TEXT0(0,trace,dbf_text);
2965 if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2966 (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2967 ((init_data->no_input_qs) && (!init_data->input_handler)) ||
2968 ((init_data->no_output_qs) && (!init_data->output_handler)) )
2969 return -EINVAL;
2970
2971 if (!init_data->input_sbal_addr_array)
2972 return -EINVAL;
2973
2974 if (!init_data->output_sbal_addr_array)
2975 return -EINVAL;
2976
2977 qdio_allocate_do_dbf(init_data);
2978
2979 /* create irq */
Christian Borntraeger40ac6b22006-04-27 18:40:11 -07002980 irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002981
2982 QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
2983 QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
2984
2985 if (!irq_ptr) {
2986 QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n");
2987 return -ENOMEM;
2988 }
2989
Linus Torvalds1da177e2005-04-16 15:20:36 -07002990 init_MUTEX(&irq_ptr->setting_up_sema);
2991
2992 /* QDR must be in DMA area since CCW data address is only 32 bit */
2993 irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
2994 if (!(irq_ptr->qdr)) {
Christian Borntraeger40ac6b22006-04-27 18:40:11 -07002995 free_page((unsigned long) irq_ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002996 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
2997 return -ENOMEM;
2998 }
2999 QDIO_DBF_TEXT0(0,setup,"qdr:");
3000 QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*));
3001
3002 if (qdio_alloc_qs(irq_ptr,
3003 init_data->no_input_qs,
3004 init_data->no_output_qs)) {
3005 qdio_release_irq_memory(irq_ptr);
3006 return -ENOMEM;
3007 }
3008
3009 init_data->cdev->private->qdio_data = irq_ptr;
3010
3011 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE);
3012
3013 return 0;
3014}
3015
Heiko Carstens2b67fc42007-02-05 21:16:47 +01003016static int qdio_fill_irq(struct qdio_initialize *init_data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003017{
3018 int i;
3019 char dbf_text[15];
3020 struct ciw *ciw;
3021 int is_iqdio;
3022 struct qdio_irq *irq_ptr;
3023
3024 irq_ptr = init_data->cdev->private->qdio_data;
3025
3026 memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr));
3027
3028 /* wipes qib.ac, required by ar7063 */
3029 memset(irq_ptr->qdr,0,sizeof(struct qdr));
3030
3031 irq_ptr->int_parm=init_data->int_parm;
3032
Cornelia Hucka8237fc2006-01-06 00:19:21 -08003033 irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003034 irq_ptr->no_input_qs=init_data->no_input_qs;
3035 irq_ptr->no_output_qs=init_data->no_output_qs;
3036
3037 if (init_data->q_format==QDIO_IQDIO_QFMT) {
3038 irq_ptr->is_iqdio_irq=1;
3039 irq_ptr->is_thinint_irq=1;
3040 } else {
3041 irq_ptr->is_iqdio_irq=0;
3042 irq_ptr->is_thinint_irq=hydra_thinints;
3043 }
3044 sprintf(dbf_text,"is_i_t%1x%1x",
3045 irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq);
3046 QDIO_DBF_TEXT2(0,setup,dbf_text);
3047
3048 if (irq_ptr->is_thinint_irq) {
Frank Pavlic8129ee12006-01-06 00:19:20 -08003049 irq_ptr->dev_st_chg_ind = qdio_get_indicator();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003050 QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*));
3051 if (!irq_ptr->dev_st_chg_ind) {
3052 QDIO_PRINT_WARN("no indicator location available " \
Cornelia Huckfb6958a2006-01-06 00:19:25 -08003053 "for irq 0.%x.%x\n",
3054 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003055 qdio_release_irq_memory(irq_ptr);
3056 return -ENOBUFS;
3057 }
3058 }
3059
3060 /* defaults */
3061 irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD;
3062 irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT;
3063 irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD;
3064 irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT;
3065
3066 qdio_fill_qs(irq_ptr, init_data->cdev,
3067 init_data->no_input_qs,
3068 init_data->no_output_qs,
3069 init_data->input_handler,
3070 init_data->output_handler,init_data->int_parm,
3071 init_data->q_format,init_data->flags,
3072 init_data->input_sbal_addr_array,
3073 init_data->output_sbal_addr_array);
3074
3075 if (!try_module_get(THIS_MODULE)) {
3076 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3077 qdio_release_irq_memory(irq_ptr);
3078 return -EINVAL;
3079 }
3080
3081 qdio_fill_thresholds(irq_ptr,init_data->no_input_qs,
3082 init_data->no_output_qs,
3083 init_data->min_input_threshold,
3084 init_data->max_input_threshold,
3085 init_data->min_output_threshold,
3086 init_data->max_output_threshold);
3087
3088 /* fill in qdr */
3089 irq_ptr->qdr->qfmt=init_data->q_format;
3090 irq_ptr->qdr->iqdcnt=init_data->no_input_qs;
3091 irq_ptr->qdr->oqdcnt=init_data->no_output_qs;
3092 irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */
3093 irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4;
3094
3095 irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib;
3096 irq_ptr->qdr->qkey=QDIO_STORAGE_KEY;
3097
3098 /* fill in qib */
Frank Pavlic8129ee12006-01-06 00:19:20 -08003099 irq_ptr->is_qebsm = is_passthrough;
3100 if (irq_ptr->is_qebsm)
3101 irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
3102
Linus Torvalds1da177e2005-04-16 15:20:36 -07003103 irq_ptr->qib.qfmt=init_data->q_format;
3104 if (init_data->no_input_qs)
3105 irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib);
3106 if (init_data->no_output_qs)
3107 irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib);
3108 memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8);
3109
3110 qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format,
3111 init_data->qib_param_field,
3112 init_data->no_input_qs,
3113 init_data->no_output_qs,
3114 init_data->input_slib_elements,
3115 init_data->output_slib_elements);
3116
3117 /* first input descriptors, then output descriptors */
3118 is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0;
3119 for (i=0;i<init_data->no_input_qs;i++)
3120 qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio);
3121
3122 for (i=0;i<init_data->no_output_qs;i++)
3123 qdio_allocate_fill_output_desc(irq_ptr, i,
3124 init_data->no_input_qs,
3125 is_iqdio);
3126
3127 /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3128
3129 /* get qdio commands */
3130 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
3131 if (!ciw) {
3132 QDIO_DBF_TEXT2(1,setup,"no eq");
3133 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3134 "Trying to use default.\n");
3135 } else
3136 irq_ptr->equeue = *ciw;
3137 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
3138 if (!ciw) {
3139 QDIO_DBF_TEXT2(1,setup,"no aq");
3140 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3141 "Trying to use default.\n");
3142 } else
3143 irq_ptr->aqueue = *ciw;
3144
3145 /* Set new interrupt handler. */
3146 irq_ptr->original_int_handler = init_data->cdev->handler;
3147 init_data->cdev->handler = qdio_handler;
3148
3149 return 0;
3150}
3151
3152int
3153qdio_establish(struct qdio_initialize *init_data)
3154{
3155 struct qdio_irq *irq_ptr;
3156 unsigned long saveflags;
3157 int result, result2;
3158 struct ccw_device *cdev;
3159 char dbf_text[20];
3160
3161 cdev=init_data->cdev;
3162 irq_ptr = cdev->private->qdio_data;
3163 if (!irq_ptr)
3164 return -EINVAL;
3165
3166 if (cdev->private->state != DEV_STATE_ONLINE)
3167 return -EINVAL;
3168
3169 down(&irq_ptr->setting_up_sema);
3170
3171 qdio_fill_irq(init_data);
3172
3173 /* the thinint CHSC stuff */
3174 if (irq_ptr->is_thinint_irq) {
3175
3176 result = tiqdio_set_subchannel_ind(irq_ptr,0);
3177 if (result) {
3178 up(&irq_ptr->setting_up_sema);
3179 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3180 return result;
3181 }
3182 tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET);
3183 }
3184
Cornelia Huck78964262006-10-11 15:31:38 +02003185 sprintf(dbf_text,"qest%4x",cdev->private->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003186 QDIO_DBF_TEXT0(0,setup,dbf_text);
3187 QDIO_DBF_TEXT0(0,trace,dbf_text);
3188
3189 /* establish q */
3190 irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd;
3191 irq_ptr->ccw.flags=CCW_FLAG_SLI;
3192 irq_ptr->ccw.count=irq_ptr->equeue.count;
3193 irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr);
3194
3195 spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3196
3197 ccw_device_set_options(cdev, 0);
3198 result=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3199 QDIO_DOING_ESTABLISH,0, 0,
3200 QDIO_ESTABLISH_TIMEOUT);
3201 if (result) {
3202 result2=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3203 QDIO_DOING_ESTABLISH,0,0,
3204 QDIO_ESTABLISH_TIMEOUT);
3205 sprintf(dbf_text,"eq:io%4x",result);
3206 QDIO_DBF_TEXT2(1,setup,dbf_text);
3207 if (result2) {
3208 sprintf(dbf_text,"eq:io%4x",result);
3209 QDIO_DBF_TEXT2(1,setup,dbf_text);
3210 }
Cornelia Huckfb6958a2006-01-06 00:19:25 -08003211 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3212 "returned %i, next try returned %i\n",
3213 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3214 result, result2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003215 result=result2;
3216 if (result)
3217 ccw_device_set_timeout(cdev, 0);
3218 }
3219
3220 spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3221
3222 if (result) {
3223 up(&irq_ptr->setting_up_sema);
3224 qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR);
3225 return result;
3226 }
3227
Ursula Braun-Krahlcdb32dc2005-11-07 00:59:10 -08003228 /* Timeout is cared for already by using ccw_device_start_timeout(). */
3229 wait_event_interruptible(cdev->private->wait_q,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003230 irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
Ursula Braun-Krahlcdb32dc2005-11-07 00:59:10 -08003231 irq_ptr->state == QDIO_IRQ_STATE_ERR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003232
3233 if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED)
3234 result = 0;
3235 else {
3236 up(&irq_ptr->setting_up_sema);
3237 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3238 return -EIO;
3239 }
3240
Frank Pavlic8129ee12006-01-06 00:19:20 -08003241 qdio_get_ssqd_information(irq_ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003242 /* if this gets set once, we're running under VM and can omit SVSes */
3243 if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY)
3244 omit_svs=1;
3245
3246 sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac);
3247 QDIO_DBF_TEXT2(0,setup,dbf_text);
3248
3249 sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac);
3250 QDIO_DBF_TEXT2(0,setup,dbf_text);
3251
3252 irq_ptr->hydra_gives_outbound_pcis=
3253 irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED;
3254 irq_ptr->sync_done_on_outb_pcis=
3255 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS;
3256
3257 qdio_initialize_set_siga_flags_input(irq_ptr);
3258 qdio_initialize_set_siga_flags_output(irq_ptr);
3259
3260 up(&irq_ptr->setting_up_sema);
3261
3262 return result;
3263
3264}
3265
3266int
3267qdio_activate(struct ccw_device *cdev, int flags)
3268{
3269 struct qdio_irq *irq_ptr;
3270 int i,result=0,result2;
3271 unsigned long saveflags;
3272 char dbf_text[20]; /* see qdio_initialize */
3273
3274 irq_ptr = cdev->private->qdio_data;
3275 if (!irq_ptr)
3276 return -ENODEV;
3277
3278 if (cdev->private->state != DEV_STATE_ONLINE)
3279 return -EINVAL;
3280
3281 down(&irq_ptr->setting_up_sema);
3282 if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) {
3283 result=-EBUSY;
3284 goto out;
3285 }
3286
Cornelia Hucka8237fc2006-01-06 00:19:21 -08003287 sprintf(dbf_text,"qact%4x", irq_ptr->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003288 QDIO_DBF_TEXT2(0,setup,dbf_text);
3289 QDIO_DBF_TEXT2(0,trace,dbf_text);
3290
3291 /* activate q */
3292 irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd;
3293 irq_ptr->ccw.flags=CCW_FLAG_SLI;
3294 irq_ptr->ccw.count=irq_ptr->aqueue.count;
3295 irq_ptr->ccw.cda=QDIO_GET_ADDR(0);
3296
3297 spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3298
3299 ccw_device_set_timeout(cdev, 0);
3300 ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
3301 result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE,
3302 0, DOIO_DENY_PREFETCH);
3303 if (result) {
3304 result2=ccw_device_start(cdev,&irq_ptr->ccw,
3305 QDIO_DOING_ACTIVATE,0,0);
3306 sprintf(dbf_text,"aq:io%4x",result);
3307 QDIO_DBF_TEXT2(1,setup,dbf_text);
3308 if (result2) {
3309 sprintf(dbf_text,"aq:io%4x",result);
3310 QDIO_DBF_TEXT2(1,setup,dbf_text);
3311 }
Cornelia Huckfb6958a2006-01-06 00:19:25 -08003312 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3313 "returned %i, next try returned %i\n",
3314 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3315 result, result2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003316 result=result2;
3317 }
3318
3319 spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3320 if (result)
3321 goto out;
3322
3323 for (i=0;i<irq_ptr->no_input_qs;i++) {
3324 if (irq_ptr->is_thinint_irq) {
3325 /*
3326 * that way we know, that, if we will get interrupted
3327 * by tiqdio_inbound_processing, qdio_unmark_q will
3328 * not be called
3329 */
3330 qdio_reserve_q(irq_ptr->input_qs[i]);
3331 qdio_mark_tiq(irq_ptr->input_qs[i]);
3332 qdio_release_q(irq_ptr->input_qs[i]);
3333 }
3334 }
3335
3336 if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) {
3337 for (i=0;i<irq_ptr->no_input_qs;i++) {
3338 irq_ptr->input_qs[i]->is_input_q|=
3339 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT;
3340 }
3341 }
3342
3343 wait_event_interruptible_timeout(cdev->private->wait_q,
3344 ((irq_ptr->state ==
3345 QDIO_IRQ_STATE_STOPPED) ||
3346 (irq_ptr->state ==
3347 QDIO_IRQ_STATE_ERR)),
3348 QDIO_ACTIVATE_TIMEOUT);
3349
3350 switch (irq_ptr->state) {
3351 case QDIO_IRQ_STATE_STOPPED:
3352 case QDIO_IRQ_STATE_ERR:
3353 up(&irq_ptr->setting_up_sema);
3354 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3355 down(&irq_ptr->setting_up_sema);
3356 result = -EIO;
3357 break;
3358 default:
3359 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
3360 result = 0;
3361 }
3362 out:
3363 up(&irq_ptr->setting_up_sema);
3364
3365 return result;
3366}
3367
3368/* buffers filled forwards again to make Rick happy */
3369static inline void
3370qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx,
3371 unsigned int count, struct qdio_buffer *buffers)
3372{
Frank Pavlic8129ee12006-01-06 00:19:20 -08003373 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3374 qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3375 if (irq->is_qebsm) {
3376 while (count)
3377 set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
3378 return;
3379 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003380 for (;;) {
Frank Pavlic8129ee12006-01-06 00:19:20 -08003381 set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003382 count--;
3383 if (!count) break;
Frank Pavlic8129ee12006-01-06 00:19:20 -08003384 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003385 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003386}
3387
3388static inline void
3389qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx,
3390 unsigned int count, struct qdio_buffer *buffers)
3391{
Frank Pavlic8129ee12006-01-06 00:19:20 -08003392 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3393
3394 qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3395 if (irq->is_qebsm) {
3396 while (count)
3397 set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3398 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003399 }
3400
Frank Pavlic8129ee12006-01-06 00:19:20 -08003401 for (;;) {
3402 set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3403 count--;
3404 if (!count) break;
3405 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
3406 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003407}
3408
3409static inline void
3410do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags,
3411 unsigned int qidx, unsigned int count,
3412 struct qdio_buffer *buffers)
3413{
3414 int used_elements;
3415
3416 /* This is the inbound handling of queues */
3417 used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3418
3419 qdio_do_qdio_fill_input(q,qidx,count,buffers);
3420
3421 if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&&
3422 (callflags&QDIO_FLAG_UNDER_INTERRUPT))
Ursula Braun9163bb22006-12-04 15:40:59 +01003423 atomic_xchg(&q->polling,0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003424
3425 if (used_elements)
3426 return;
3427 if (callflags&QDIO_FLAG_DONT_SIGA)
3428 return;
3429 if (q->siga_in) {
3430 int result;
3431
3432 result=qdio_siga_input(q);
3433 if (result) {
3434 if (q->siga_error)
3435 q->error_status_flags|=
3436 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
3437 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
3438 q->siga_error=result;
3439 }
3440 }
3441
3442 qdio_mark_q(q);
3443}
3444
3445static inline void
3446do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
3447 unsigned int qidx, unsigned int count,
3448 struct qdio_buffer *buffers)
3449{
3450 int used_elements;
Frank Pavlic8129ee12006-01-06 00:19:20 -08003451 unsigned int cnt, start_buf;
3452 unsigned char state = 0;
3453 struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003454
3455 /* This is the outbound handling of queues */
Ursula Braun34249d02006-12-08 15:54:18 +01003456 if (qdio_performance_stats)
3457 perf_stats.start_time_outbound=NOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003458
3459 qdio_do_qdio_fill_output(q,qidx,count,buffers);
3460
3461 used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3462
3463 if (callflags&QDIO_FLAG_DONT_SIGA) {
Ursula Braun34249d02006-12-08 15:54:18 +01003464 if (qdio_performance_stats) {
3465 perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3466 perf_stats.outbound_cnt++;
3467 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003468 return;
3469 }
3470 if (q->is_iqdio_q) {
3471 /* one siga for every sbal */
3472 while (count--)
3473 qdio_kick_outbound_q(q);
3474
3475 __qdio_outbound_processing(q);
3476 } else {
3477 /* under VM, we do a SIGA sync unconditionally */
3478 SYNC_MEMORY;
3479 else {
3480 /*
3481 * w/o shadow queues (else branch of
3482 * SYNC_MEMORY :-/ ), we try to
3483 * fast-requeue buffers
3484 */
Frank Pavlic8129ee12006-01-06 00:19:20 -08003485 if (irq->is_qebsm) {
3486 cnt = 1;
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);
3490 } else
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) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003494 qdio_kick_outbound_q(q);
3495 } else {
3496 QDIO_DBF_TEXT3(0,trace, "fast-req");
Ursula Braun34249d02006-12-08 15:54:18 +01003497 if (qdio_performance_stats)
3498 perf_stats.fast_reqs++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003499 }
3500 }
3501 /*
3502 * only marking the q could take too long,
3503 * the upper layer module could do a lot of
3504 * traffic in that time
3505 */
3506 __qdio_outbound_processing(q);
3507 }
3508
Ursula Braun34249d02006-12-08 15:54:18 +01003509 if (qdio_performance_stats) {
3510 perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3511 perf_stats.outbound_cnt++;
3512 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003513}
3514
3515/* count must be 1 in iqdio */
3516int
3517do_QDIO(struct ccw_device *cdev,unsigned int callflags,
3518 unsigned int queue_number, unsigned int qidx,
3519 unsigned int count,struct qdio_buffer *buffers)
3520{
3521 struct qdio_irq *irq_ptr;
3522#ifdef CONFIG_QDIO_DEBUG
3523 char dbf_text[20];
3524
Cornelia Huck85a4aa62006-10-18 18:30:47 +02003525 sprintf(dbf_text,"doQD%04x",cdev->private->schid.sch_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003526 QDIO_DBF_TEXT3(0,trace,dbf_text);
3527#endif /* CONFIG_QDIO_DEBUG */
3528
3529 if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) ||
3530 (count>QDIO_MAX_BUFFERS_PER_Q) ||
3531 (queue_number>QDIO_MAX_QUEUES_PER_IRQ) )
3532 return -EINVAL;
3533
3534 if (count==0)
3535 return 0;
3536
3537 irq_ptr = cdev->private->qdio_data;
3538 if (!irq_ptr)
3539 return -ENODEV;
3540
3541#ifdef CONFIG_QDIO_DEBUG
3542 if (callflags&QDIO_FLAG_SYNC_INPUT)
3543 QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number],
3544 sizeof(void*));
3545 else
3546 QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number],
3547 sizeof(void*));
3548 sprintf(dbf_text,"flag%04x",callflags);
3549 QDIO_DBF_TEXT3(0,trace,dbf_text);
3550 sprintf(dbf_text,"qi%02xct%02x",qidx,count);
3551 QDIO_DBF_TEXT3(0,trace,dbf_text);
3552#endif /* CONFIG_QDIO_DEBUG */
3553
3554 if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE)
3555 return -EBUSY;
3556
3557 if (callflags&QDIO_FLAG_SYNC_INPUT)
3558 do_qdio_handle_inbound(irq_ptr->input_qs[queue_number],
3559 callflags, qidx, count, buffers);
3560 else if (callflags&QDIO_FLAG_SYNC_OUTPUT)
3561 do_qdio_handle_outbound(irq_ptr->output_qs[queue_number],
3562 callflags, qidx, count, buffers);
3563 else {
3564 QDIO_DBF_TEXT3(1,trace,"doQD:inv");
3565 return -EINVAL;
3566 }
3567 return 0;
3568}
3569
Linus Torvalds1da177e2005-04-16 15:20:36 -07003570static int
3571qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
3572 int buffer_length, int *eof, void *data)
3573{
3574 int c=0;
3575
3576 /* we are always called with buffer_length=4k, so we all
3577 deliver on the first read */
3578 if (offset>0)
3579 return 0;
3580
3581#define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3582 _OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc,i_p_c);
3583 _OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc,ii_p_c);
3584 _OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc,o_p_c);
Ursula Braun34249d02006-12-08 15:54:18 +01003585 _OUTP_IT("Number of tasklet runs (total) : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003586 perf_stats.tl_runs);
3587 _OUTP_IT("\n");
Ursula Braun34249d02006-12-08 15:54:18 +01003588 _OUTP_IT("Number of SIGA sync's issued : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003589 perf_stats.siga_syncs);
Ursula Braun34249d02006-12-08 15:54:18 +01003590 _OUTP_IT("Number of SIGA in's issued : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003591 perf_stats.siga_ins);
Ursula Braun34249d02006-12-08 15:54:18 +01003592 _OUTP_IT("Number of SIGA out's issued : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003593 perf_stats.siga_outs);
Ursula Braun34249d02006-12-08 15:54:18 +01003594 _OUTP_IT("Number of PCIs caught : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003595 perf_stats.pcis);
Ursula Braun34249d02006-12-08 15:54:18 +01003596 _OUTP_IT("Number of adapter interrupts caught : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003597 perf_stats.thinints);
Ursula Braun34249d02006-12-08 15:54:18 +01003598 _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003599 perf_stats.fast_reqs);
3600 _OUTP_IT("\n");
Ursula Braun34249d02006-12-08 15:54:18 +01003601 _OUTP_IT("Total time of all inbound actions (us) incl. UL : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003602 perf_stats.inbound_time);
Ursula Braun34249d02006-12-08 15:54:18 +01003603 _OUTP_IT("Number of inbound transfers : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003604 perf_stats.inbound_cnt);
Ursula Braun34249d02006-12-08 15:54:18 +01003605 _OUTP_IT("Total time of all outbound do_QDIOs (us) : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003606 perf_stats.outbound_time);
Ursula Braun34249d02006-12-08 15:54:18 +01003607 _OUTP_IT("Number of do_QDIOs outbound : %lu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003608 perf_stats.outbound_cnt);
3609 _OUTP_IT("\n");
3610
3611 return c;
3612}
3613
3614static struct proc_dir_entry *qdio_perf_proc_file;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003615
3616static void
3617qdio_add_procfs_entry(void)
3618{
Linus Torvalds1da177e2005-04-16 15:20:36 -07003619 proc_perf_file_registration=0;
3620 qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
3621 S_IFREG|0444,&proc_root);
3622 if (qdio_perf_proc_file) {
3623 qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read;
3624 } else proc_perf_file_registration=-1;
3625
3626 if (proc_perf_file_registration)
3627 QDIO_PRINT_WARN("was not able to register perf. " \
3628 "proc-file (%i).\n",
3629 proc_perf_file_registration);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003630}
3631
3632static void
3633qdio_remove_procfs_entry(void)
3634{
Linus Torvalds1da177e2005-04-16 15:20:36 -07003635 perf_stats.tl_runs=0;
3636
3637 if (!proc_perf_file_registration) /* means if it went ok earlier */
3638 remove_proc_entry(QDIO_PERF,&proc_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003639}
3640
Ursula Braun34249d02006-12-08 15:54:18 +01003641/**
3642 * attributes in sysfs
3643 *****************************************************************************/
3644
3645static ssize_t
3646qdio_performance_stats_show(struct bus_type *bus, char *buf)
3647{
3648 return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0);
3649}
3650
3651static ssize_t
3652qdio_performance_stats_store(struct bus_type *bus, const char *buf, size_t count)
3653{
3654 char *tmp;
3655 int i;
3656
3657 i = simple_strtoul(buf, &tmp, 16);
3658 if ((i == 0) || (i == 1)) {
3659 if (i == qdio_performance_stats)
3660 return count;
3661 qdio_performance_stats = i;
3662 if (i==0) {
3663 /* reset perf. stat. info */
3664 i_p_nc = 0;
3665 i_p_c = 0;
3666 ii_p_nc = 0;
3667 ii_p_c = 0;
3668 o_p_nc = 0;
3669 o_p_c = 0;
3670 memset(&perf_stats, 0, sizeof(struct qdio_perf_stats));
3671 }
3672 } else {
3673 QDIO_PRINT_WARN("QDIO performance_stats: write 0 or 1 to this file!\n");
3674 return -EINVAL;
3675 }
3676 return count;
3677}
3678
3679static BUS_ATTR(qdio_performance_stats, 0644, qdio_performance_stats_show,
3680 qdio_performance_stats_store);
3681
Linus Torvalds1da177e2005-04-16 15:20:36 -07003682static void
3683tiqdio_register_thinints(void)
3684{
3685 char dbf_text[20];
3686 register_thinint_result=
3687 s390_register_adapter_interrupt(&tiqdio_thinint_handler);
3688 if (register_thinint_result) {
3689 sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff));
3690 QDIO_DBF_TEXT0(0,setup,dbf_text);
3691 QDIO_PRINT_ERR("failed to register adapter handler " \
3692 "(rc=%i).\nAdapter interrupts might " \
3693 "not work. Continuing.\n",
3694 register_thinint_result);
3695 }
3696}
3697
3698static void
3699tiqdio_unregister_thinints(void)
3700{
3701 if (!register_thinint_result)
3702 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler);
3703}
3704
3705static int
3706qdio_get_qdio_memory(void)
3707{
3708 int i;
3709 indicator_used[0]=1;
3710
3711 for (i=1;i<INDICATORS_PER_CACHELINE;i++)
3712 indicator_used[i]=0;
Eric Sesterhenn88abaab2006-03-24 03:15:31 -08003713 indicators = kzalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
Linus Torvalds1da177e2005-04-16 15:20:36 -07003714 GFP_KERNEL);
Eric Sesterhenn88abaab2006-03-24 03:15:31 -08003715 if (!indicators)
3716 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003717 return 0;
3718}
3719
3720static void
3721qdio_release_qdio_memory(void)
3722{
Jesper Juhl17fd6822005-11-07 01:01:30 -08003723 kfree(indicators);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003724}
3725
Ursula Braun34249d02006-12-08 15:54:18 +01003726
Linus Torvalds1da177e2005-04-16 15:20:36 -07003727static void
3728qdio_unregister_dbf_views(void)
3729{
3730 if (qdio_dbf_setup)
3731 debug_unregister(qdio_dbf_setup);
3732 if (qdio_dbf_sbal)
3733 debug_unregister(qdio_dbf_sbal);
3734 if (qdio_dbf_sense)
3735 debug_unregister(qdio_dbf_sense);
3736 if (qdio_dbf_trace)
3737 debug_unregister(qdio_dbf_trace);
3738#ifdef CONFIG_QDIO_DEBUG
3739 if (qdio_dbf_slsb_out)
3740 debug_unregister(qdio_dbf_slsb_out);
3741 if (qdio_dbf_slsb_in)
3742 debug_unregister(qdio_dbf_slsb_in);
3743#endif /* CONFIG_QDIO_DEBUG */
3744}
3745
3746static int
3747qdio_register_dbf_views(void)
3748{
3749 qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
Michael Holzheu66a464d2005-06-25 14:55:33 -07003750 QDIO_DBF_SETUP_PAGES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003751 QDIO_DBF_SETUP_NR_AREAS,
3752 QDIO_DBF_SETUP_LEN);
3753 if (!qdio_dbf_setup)
3754 goto oom;
3755 debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view);
3756 debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
3757
3758 qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
Michael Holzheu66a464d2005-06-25 14:55:33 -07003759 QDIO_DBF_SBAL_PAGES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003760 QDIO_DBF_SBAL_NR_AREAS,
3761 QDIO_DBF_SBAL_LEN);
3762 if (!qdio_dbf_sbal)
3763 goto oom;
3764
3765 debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view);
3766 debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
3767
3768 qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
Michael Holzheu66a464d2005-06-25 14:55:33 -07003769 QDIO_DBF_SENSE_PAGES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003770 QDIO_DBF_SENSE_NR_AREAS,
3771 QDIO_DBF_SENSE_LEN);
3772 if (!qdio_dbf_sense)
3773 goto oom;
3774
3775 debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view);
3776 debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
3777
3778 qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
Michael Holzheu66a464d2005-06-25 14:55:33 -07003779 QDIO_DBF_TRACE_PAGES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003780 QDIO_DBF_TRACE_NR_AREAS,
3781 QDIO_DBF_TRACE_LEN);
3782 if (!qdio_dbf_trace)
3783 goto oom;
3784
3785 debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view);
3786 debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL);
3787
3788#ifdef CONFIG_QDIO_DEBUG
3789 qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
Michael Holzheu66a464d2005-06-25 14:55:33 -07003790 QDIO_DBF_SLSB_OUT_PAGES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003791 QDIO_DBF_SLSB_OUT_NR_AREAS,
3792 QDIO_DBF_SLSB_OUT_LEN);
3793 if (!qdio_dbf_slsb_out)
3794 goto oom;
3795 debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view);
3796 debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
3797
3798 qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
Michael Holzheu66a464d2005-06-25 14:55:33 -07003799 QDIO_DBF_SLSB_IN_PAGES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003800 QDIO_DBF_SLSB_IN_NR_AREAS,
3801 QDIO_DBF_SLSB_IN_LEN);
3802 if (!qdio_dbf_slsb_in)
3803 goto oom;
3804 debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view);
3805 debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL);
3806#endif /* CONFIG_QDIO_DEBUG */
3807 return 0;
3808oom:
3809 QDIO_PRINT_ERR("not enough memory for dbf.\n");
3810 qdio_unregister_dbf_views();
3811 return -ENOMEM;
3812}
3813
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -07003814static void *qdio_mempool_alloc(gfp_t gfp_mask, void *size)
3815{
3816 return (void *) get_zeroed_page(gfp_mask|GFP_DMA);
3817}
3818
3819static void qdio_mempool_free(void *element, void *size)
3820{
3821 free_page((unsigned long) element);
3822}
3823
Linus Torvalds1da177e2005-04-16 15:20:36 -07003824static int __init
3825init_QDIO(void)
3826{
3827 int res;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003828 void *ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003829
3830 printk("qdio: loading %s\n",version);
3831
3832 res=qdio_get_qdio_memory();
3833 if (res)
3834 return res;
3835
3836 res = qdio_register_dbf_views();
3837 if (res)
3838 return res;
3839
3840 QDIO_DBF_TEXT0(0,setup,"initQDIO");
Ursula Braun34249d02006-12-08 15:54:18 +01003841 res = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003842
Ursula Braun34249d02006-12-08 15:54:18 +01003843 memset((void*)&perf_stats,0,sizeof(perf_stats));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003844 QDIO_DBF_TEXT0(0,setup,"perfstat");
3845 ptr=&perf_stats;
3846 QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003847
3848 qdio_add_procfs_entry();
3849
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -07003850 qdio_mempool_scssc = mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS,
3851 qdio_mempool_alloc,
3852 qdio_mempool_free, NULL);
3853
Linus Torvalds1da177e2005-04-16 15:20:36 -07003854 if (tiqdio_check_chsc_availability())
3855 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3856
3857 tiqdio_register_thinints();
3858
3859 return 0;
3860 }
3861
3862static void __exit
3863cleanup_QDIO(void)
3864{
3865 tiqdio_unregister_thinints();
3866 qdio_remove_procfs_entry();
3867 qdio_release_qdio_memory();
3868 qdio_unregister_dbf_views();
Andreas Herrmanna3ae39c2006-04-27 18:40:09 -07003869 mempool_destroy(qdio_mempool_scssc);
Ursula Braun34249d02006-12-08 15:54:18 +01003870 bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003871 printk("qdio: %s: module removed\n",version);
3872}
3873
3874module_init(init_QDIO);
3875module_exit(cleanup_QDIO);
3876
3877EXPORT_SYMBOL(qdio_allocate);
3878EXPORT_SYMBOL(qdio_establish);
3879EXPORT_SYMBOL(qdio_initialize);
3880EXPORT_SYMBOL(qdio_activate);
3881EXPORT_SYMBOL(do_QDIO);
3882EXPORT_SYMBOL(qdio_shutdown);
3883EXPORT_SYMBOL(qdio_free);
3884EXPORT_SYMBOL(qdio_cleanup);
3885EXPORT_SYMBOL(qdio_synchronize);