drivers/s390/cio/qdio.c

   1 /*
   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>
  10  * 2.6 cio integration by Cornelia Huck <cornelia.huck@de.ibm.com>
  11  *
  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
  33 #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>
  40 #include <linux/mempool.h>
  41
  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>
  49 #include <asm/s390_rdev.h>
  50 #include <asm/qdio.h>
  51 #include <asm/airq.h>
  52
  53 #include "cio.h"
  54 #include "css.h"
  55 #include "device.h"
  56 #include "qdio.h"
  57 #include "ioasm.h"
  58 #include "chsc.h"
  59
  60 /****************** MODULE PARAMETER VARIABLES ********************/
  61 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
  62 MODULE_DESCRIPTION("QDIO base support version 2, " \
  63                    "Copyright 2000 IBM Corporation");
  64 MODULE_LICENSE("GPL");
  65
  66 /******************** HERE WE GO ***********************************/
  67
  68 static const char version[] = "QDIO base support version 2";
  69
  70 static int qdio_performance_stats = 0;
  71 static int proc_perf_file_registration;
  72 static struct qdio_perf_stats perf_stats;
  73
  74 static int hydra_thinints;
  75 static int is_passthrough = 0;
  76 static int omit_svs;
  77
  78 static int indicator_used[INDICATORS_PER_CACHELINE];
  79 static __u32 * volatile indicators;
  80 static __u32 volatile spare_indicator;
  81 static atomic_t spare_indicator_usecount;
  82 #define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
  83 static mempool_t *qdio_mempool_scssc;
  84 static struct kmem_cache *qdio_q_cache;
  85
  86 static debug_info_t *qdio_dbf_setup;
  87 static debug_info_t *qdio_dbf_sbal;
  88 static debug_info_t *qdio_dbf_trace;
  89 static debug_info_t *qdio_dbf_sense;
  90 #ifdef CONFIG_QDIO_DEBUG
  91 static debug_info_t *qdio_dbf_slsb_out;
  92 static debug_info_t *qdio_dbf_slsb_in;
  93 #endif /* CONFIG_QDIO_DEBUG */
  94
  95 /* iQDIO stuff: */
  96 static volatile struct qdio_q *tiq_list=NULL; /* volatile as it could change
  97                                                  during a while loop */
  98 static DEFINE_SPINLOCK(ttiq_list_lock);
  99 static void *tiqdio_ind;
 100 static void tiqdio_tl(unsigned long);
 101 static DECLARE_TASKLET(tiqdio_tasklet,tiqdio_tl,0);
 102
 103 /* not a macro, as one of the arguments is atomic_read */
 104 static inline int
 105 qdio_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 #ifdef CONFIG_64BIT
 115 static inline void qdio_perf_stat_inc(atomic64_t *count)
 116 {
 117         if (qdio_performance_stats)
 118                 atomic64_inc(count);
 119 }
 120
 121 static inline void qdio_perf_stat_dec(atomic64_t *count)
 122 {
 123         if (qdio_performance_stats)
 124                 atomic64_dec(count);
 125 }
 126 #else /* CONFIG_64BIT */
 127 static inline void qdio_perf_stat_inc(atomic_t *count)
 128 {
 129         if (qdio_performance_stats)
 130                 atomic_inc(count);
 131 }
 132
 133 static inline void qdio_perf_stat_dec(atomic_t *count)
 134 {
 135         if (qdio_performance_stats)
 136                 atomic_dec(count);
 137 }
 138 #endif /* CONFIG_64BIT */
 139
 140 static inline __u64
 141 qdio_get_micros(void)
 142 {
 143         return (get_clock() >> 12); /* time>>12 is microseconds */
 144 }
 145
 146 /*
 147  * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
 148  * the q in any case, so that we'll not be interrupted when we are in
 149  * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
 150  * ever works (last famous words)
 151  */
 152 static inline int
 153 qdio_reserve_q(struct qdio_q *q)
 154 {
 155         return atomic_add_return(1,&q->use_count) - 1;
 156 }
 157
 158 static inline void
 159 qdio_release_q(struct qdio_q *q)
 160 {
 161         atomic_dec(&q->use_count);
 162 }
 163
 164 /*check ccq  */
 165 static int
 166 qdio_check_ccq(struct qdio_q *q, unsigned int ccq)
 167 {
 168         char dbf_text[15];
 169
 170         if (ccq == 0 || ccq == 32)
 171                 return 0;
 172         if (ccq == 96 || ccq == 97)
 173                 return 1;
 174         /*notify devices immediately*/
 175         sprintf(dbf_text,"%d", ccq);
 176         QDIO_DBF_TEXT2(1,trace,dbf_text);
 177         return -EIO;
 178 }
 179 /* EQBS: extract buffer states */
 180 static int
 181 qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
 182              unsigned int *start, unsigned int *cnt)
 183 {
 184         struct qdio_irq *irq;
 185         unsigned int tmp_cnt, q_no, ccq;
 186         int rc ;
 187         char dbf_text[15];
 188
 189         ccq = 0;
 190         tmp_cnt = *cnt;
 191         irq = (struct qdio_irq*)q->irq_ptr;
 192         q_no = q->q_no;
 193         if(!q->is_input_q)
 194                 q_no += irq->no_input_qs;
 195 again:
 196         ccq = do_eqbs(irq->sch_token, state, q_no, start, cnt);
 197         rc = qdio_check_ccq(q, ccq);
 198         if ((ccq == 96) && (tmp_cnt != *cnt))
 199                 rc = 0;
 200         if (rc == 1) {
 201                 QDIO_DBF_TEXT5(1,trace,"eqAGAIN");
 202                 goto again;
 203         }
 204         if (rc < 0) {
 205                 QDIO_DBF_TEXT2(1,trace,"eqberr");
 206                 sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt, *cnt, ccq, q_no);
 207                 QDIO_DBF_TEXT2(1,trace,dbf_text);
 208                 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
 209                                 QDIO_STATUS_LOOK_FOR_ERROR,
 210                                 0, 0, 0, -1, -1, q->int_parm);
 211                 return 0;
 212         }
 213         return (tmp_cnt - *cnt);
 214 }
 215
 216 /* SQBS: set buffer states */
 217 static int
 218 qdio_do_sqbs(struct qdio_q *q, unsigned char state,
 219              unsigned int *start, unsigned int *cnt)
 220 {
 221         struct qdio_irq *irq;
 222         unsigned int tmp_cnt, q_no, ccq;
 223         int rc;
 224         char dbf_text[15];
 225
 226         ccq = 0;
 227         tmp_cnt = *cnt;
 228         irq = (struct qdio_irq*)q->irq_ptr;
 229         q_no = q->q_no;
 230         if(!q->is_input_q)
 231                 q_no += irq->no_input_qs;
 232 again:
 233         ccq = do_sqbs(irq->sch_token, state, q_no, start, cnt);
 234         rc = qdio_check_ccq(q, ccq);
 235         if (rc == 1) {
 236                 QDIO_DBF_TEXT5(1,trace,"sqAGAIN");
 237                 goto again;
 238         }
 239         if (rc < 0) {
 240                 QDIO_DBF_TEXT3(1,trace,"sqberr");
 241                 sprintf(dbf_text,"%2x,%2x",tmp_cnt,*cnt);
 242                 QDIO_DBF_TEXT3(1,trace,dbf_text);
 243                 sprintf(dbf_text,"%d,%d",ccq,q_no);
 244                 QDIO_DBF_TEXT3(1,trace,dbf_text);
 245                 q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
 246                                 QDIO_STATUS_LOOK_FOR_ERROR,
 247                                 0, 0, 0, -1, -1, q->int_parm);
 248                 return 0;
 249         }
 250         return (tmp_cnt - *cnt);
 251 }
 252
 253 static inline int
 254 qdio_set_slsb(struct qdio_q *q, unsigned int *bufno,
 255               unsigned char state, unsigned int *count)
 256 {
 257         volatile char *slsb;
 258         struct qdio_irq *irq;
 259
 260         irq = (struct qdio_irq*)q->irq_ptr;
 261         if (!irq->is_qebsm) {
 262                 slsb = (char *)&q->slsb.acc.val[(*bufno)];
 263                 xchg(slsb, state);
 264                 return 1;
 265         }
 266         return qdio_do_sqbs(q, state, bufno, count);
 267 }
 268
 269 #ifdef CONFIG_QDIO_DEBUG
 270 static inline void
 271 qdio_trace_slsb(struct qdio_q *q)
 272 {
 273         if (q->queue_type==QDIO_TRACE_QTYPE) {
 274                 if (q->is_input_q)
 275                         QDIO_DBF_HEX2(0,slsb_in,&q->slsb,
 276                                       QDIO_MAX_BUFFERS_PER_Q);
 277                 else
 278                         QDIO_DBF_HEX2(0,slsb_out,&q->slsb,
 279                                       QDIO_MAX_BUFFERS_PER_Q);
 280         }
 281 }
 282 #endif
 283
 284 static inline int
 285 set_slsb(struct qdio_q *q, unsigned int *bufno,
 286          unsigned char state, unsigned int *count)
 287 {
 288         int rc;
 289 #ifdef CONFIG_QDIO_DEBUG
 290         qdio_trace_slsb(q);
 291 #endif
 292         rc = qdio_set_slsb(q, bufno, state, count);
 293 #ifdef CONFIG_QDIO_DEBUG
 294         qdio_trace_slsb(q);
 295 #endif
 296         return rc;
 297 }
 298 static inline int
 299 qdio_siga_sync(struct qdio_q *q, unsigned int gpr2,
 300                unsigned int gpr3)
 301 {
 302         int cc;
 303
 304         QDIO_DBF_TEXT4(0,trace,"sigasync");
 305         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 306
 307         qdio_perf_stat_inc(&perf_stats.siga_syncs);
 308
 309         cc = do_siga_sync(q->schid, gpr2, gpr3);
 310         if (cc)
 311                 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
 312
 313         return cc;
 314 }
 315
 316 static inline int
 317 qdio_siga_sync_q(struct qdio_q *q)
 318 {
 319         if (q->is_input_q)
 320                 return qdio_siga_sync(q, 0, q->mask);
 321         return qdio_siga_sync(q, q->mask, 0);
 322 }
 323
 324 static int
 325 __do_siga_output(struct qdio_q *q, unsigned int *busy_bit)
 326 {
 327        struct qdio_irq *irq;
 328        unsigned int fc = 0;
 329        unsigned long schid;
 330
 331        irq = (struct qdio_irq *) q->irq_ptr;
 332        if (!irq->is_qebsm)
 333                schid = *((u32 *)&q->schid);
 334        else {
 335                schid = irq->sch_token;
 336                fc |= 0x80;
 337        }
 338        return do_siga_output(schid, q->mask, busy_bit, fc);
 339 }
 340
 341 /*
 342  * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
 343  * an access exception
 344  */
 345 static int
 346 qdio_siga_output(struct qdio_q *q)
 347 {
 348         int cc;
 349         __u32 busy_bit;
 350         __u64 start_time=0;
 351
 352         qdio_perf_stat_inc(&perf_stats.siga_outs);
 353
 354         QDIO_DBF_TEXT4(0,trace,"sigaout");
 355         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 356
 357         for (;;) {
 358                 cc = __do_siga_output(q, &busy_bit);
 359 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
 360                 if ((cc==2) && (busy_bit) && (q->is_iqdio_q)) {
 361                         if (!start_time)
 362                                 start_time=NOW;
 363                         if ((NOW-start_time)>QDIO_BUSY_BIT_PATIENCE)
 364                                 break;
 365                 } else
 366                         break;
 367         }
 368
 369         if ((cc==2) && (busy_bit))
 370                 cc |= QDIO_SIGA_ERROR_B_BIT_SET;
 371
 372         if (cc)
 373                 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
 374
 375         return cc;
 376 }
 377
 378 static int
 379 qdio_siga_input(struct qdio_q *q)
 380 {
 381         int cc;
 382
 383         QDIO_DBF_TEXT4(0,trace,"sigain");
 384         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 385
 386         qdio_perf_stat_inc(&perf_stats.siga_ins);
 387
 388         cc = do_siga_input(q->schid, q->mask);
 389
 390         if (cc)
 391                 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
 392
 393         return cc;
 394 }
 395
 396 /* locked by the locks in qdio_activate and qdio_cleanup */
 397 static __u32 *
 398 qdio_get_indicator(void)
 399 {
 400         int i;
 401
 402         for (i = 0; i < INDICATORS_PER_CACHELINE; i++)
 403                 if (!indicator_used[i]) {
 404                         indicator_used[i]=1;
 405                         return indicators+i;
 406                 }
 407         atomic_inc(&spare_indicator_usecount);
 408         return (__u32 * volatile) &spare_indicator;
 409 }
 410
 411 /* locked by the locks in qdio_activate and qdio_cleanup */
 412 static void
 413 qdio_put_indicator(__u32 *addr)
 414 {
 415         int i;
 416
 417         if ( (addr) && (addr!=&spare_indicator) ) {
 418                 i=addr-indicators;
 419                 indicator_used[i]=0;
 420         }
 421         if (addr == &spare_indicator)
 422                 atomic_dec(&spare_indicator_usecount);
 423 }
 424
 425 static inline void
 426 tiqdio_clear_summary_bit(__u32 *location)
 427 {
 428         QDIO_DBF_TEXT5(0,trace,"clrsummb");
 429         QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
 430
 431         xchg(location,0);
 432 }
 433
 434 static inline  void
 435 tiqdio_set_summary_bit(__u32 *location)
 436 {
 437         QDIO_DBF_TEXT5(0,trace,"setsummb");
 438         QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
 439
 440         xchg(location,-1);
 441 }
 442
 443 static inline void
 444 tiqdio_sched_tl(void)
 445 {
 446         tasklet_hi_schedule(&tiqdio_tasklet);
 447 }
 448
 449 static void
 450 qdio_mark_tiq(struct qdio_q *q)
 451 {
 452         unsigned long flags;
 453
 454         QDIO_DBF_TEXT4(0,trace,"mark iq");
 455         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 456
 457         spin_lock_irqsave(&ttiq_list_lock,flags);
 458         if (unlikely(atomic_read(&q->is_in_shutdown)))
 459                 goto out_unlock;
 460
 461         if (!q->is_input_q)
 462                 goto out_unlock;
 463
 464         if ((q->list_prev) || (q->list_next))
 465                 goto out_unlock;
 466
 467         if (!tiq_list) {
 468                 tiq_list=q;
 469                 q->list_prev=q;
 470                 q->list_next=q;
 471         } else {
 472                 q->list_next=tiq_list;
 473                 q->list_prev=tiq_list->list_prev;
 474                 tiq_list->list_prev->list_next=q;
 475                 tiq_list->list_prev=q;
 476         }
 477         spin_unlock_irqrestore(&ttiq_list_lock,flags);
 478
 479         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
 480         tiqdio_sched_tl();
 481         return;
 482 out_unlock:
 483         spin_unlock_irqrestore(&ttiq_list_lock,flags);
 484         return;
 485 }
 486
 487 static inline void
 488 qdio_mark_q(struct qdio_q *q)
 489 {
 490         QDIO_DBF_TEXT4(0,trace,"mark q");
 491         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 492
 493         if (unlikely(atomic_read(&q->is_in_shutdown)))
 494                 return;
 495
 496         tasklet_schedule(&q->tasklet);
 497 }
 498
 499 static int
 500 qdio_stop_polling(struct qdio_q *q)
 501 {
 502 #ifdef QDIO_USE_PROCESSING_STATE
 503        unsigned int tmp, gsf, count = 1;
 504        unsigned char state = 0;
 505        struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
 506
 507         if (!atomic_xchg(&q->polling,0))
 508                 return 1;
 509
 510         QDIO_DBF_TEXT4(0,trace,"stoppoll");
 511         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 512
 513         /* show the card that we are not polling anymore */
 514         if (!q->is_input_q)
 515                 return 1;
 516
 517        tmp = gsf = GET_SAVED_FRONTIER(q);
 518        tmp = ((tmp + QDIO_MAX_BUFFERS_PER_Q-1) & (QDIO_MAX_BUFFERS_PER_Q-1) );
 519        set_slsb(q, &tmp, SLSB_P_INPUT_NOT_INIT, &count);
 520
 521         /*
 522          * we don't issue this SYNC_MEMORY, as we trust Rick T and
 523          * moreover will not use the PROCESSING state under VM, so
 524          * q->polling was 0 anyway
 525          */
 526         /*SYNC_MEMORY;*/
 527        if (irq->is_qebsm) {
 528                count = 1;
 529                qdio_do_eqbs(q, &state, &gsf, &count);
 530        } else
 531                state = q->slsb.acc.val[gsf];
 532        if (state != SLSB_P_INPUT_PRIMED)
 533                 return 1;
 534         /*
 535          * set our summary bit again, as otherwise there is a
 536          * small window we can miss between resetting it and
 537          * checking for PRIMED state
 538          */
 539         if (q->is_thinint_q)
 540                 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
 541         return 0;
 542
 543 #else /* QDIO_USE_PROCESSING_STATE */
 544         return 1;
 545 #endif /* QDIO_USE_PROCESSING_STATE */
 546 }
 547
 548 /*
 549  * see the comment in do_QDIO and before qdio_reserve_q about the
 550  * sophisticated locking outside of unmark_q, so that we don't need to
 551  * disable the interrupts :-)
 552 */
 553 static void
 554 qdio_unmark_q(struct qdio_q *q)
 555 {
 556         unsigned long flags;
 557
 558         QDIO_DBF_TEXT4(0,trace,"unmark q");
 559         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 560
 561         if ((!q->list_prev)||(!q->list_next))
 562                 return;
 563
 564         if ((q->is_thinint_q)&&(q->is_input_q)) {
 565                 /* iQDIO */
 566                 spin_lock_irqsave(&ttiq_list_lock,flags);
 567                 /* in case cleanup has done this already and simultanously
 568                  * qdio_unmark_q is called from the interrupt handler, we've
 569                  * got to check this in this specific case again */
 570                 if ((!q->list_prev)||(!q->list_next))
 571                         goto out;
 572                 if (q->list_next==q) {
 573                         /* q was the only interesting q */
 574                         tiq_list=NULL;
 575                         q->list_next=NULL;
 576                         q->list_prev=NULL;
 577                 } else {
 578                         q->list_next->list_prev=q->list_prev;
 579                         q->list_prev->list_next=q->list_next;
 580                         tiq_list=q->list_next;
 581                         q->list_next=NULL;
 582                         q->list_prev=NULL;
 583                 }
 584 out:
 585                 spin_unlock_irqrestore(&ttiq_list_lock,flags);
 586         }
 587 }
 588
 589 static inline unsigned long
 590 tiqdio_clear_global_summary(void)
 591 {
 592         unsigned long time;
 593
 594         QDIO_DBF_TEXT5(0,trace,"clrglobl");
 595
 596         time = do_clear_global_summary();
 597
 598         QDIO_DBF_HEX5(0,trace,&time,sizeof(unsigned long));
 599
 600         return time;
 601 }
 602
 603
 604 /************************* OUTBOUND ROUTINES *******************************/
 605 static int
 606 qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q *q)
 607 {
 608         struct qdio_irq *irq;
 609         unsigned char state;
 610         unsigned int cnt, count, ftc;
 611
 612         irq = (struct qdio_irq *) q->irq_ptr;
 613         if ((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis))
 614                 SYNC_MEMORY;
 615
 616         ftc = q->first_to_check;
 617         count = qdio_min(atomic_read(&q->number_of_buffers_used),
 618                         (QDIO_MAX_BUFFERS_PER_Q-1));
 619         if (count == 0)
 620                 return q->first_to_check;
 621         cnt = qdio_do_eqbs(q, &state, &ftc, &count);
 622         if (cnt == 0)
 623                 return q->first_to_check;
 624         switch (state) {
 625         case SLSB_P_OUTPUT_ERROR:
 626                 QDIO_DBF_TEXT3(0,trace,"outperr");
 627                 atomic_sub(cnt , &q->number_of_buffers_used);
 628                 if (q->qdio_error)
 629                         q->error_status_flags |=
 630                                 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
 631                 q->qdio_error = SLSB_P_OUTPUT_ERROR;
 632                 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
 633                 q->first_to_check = ftc;
 634                 break;
 635         case SLSB_P_OUTPUT_EMPTY:
 636                 QDIO_DBF_TEXT5(0,trace,"outpempt");
 637                 atomic_sub(cnt, &q->number_of_buffers_used);
 638                 q->first_to_check = ftc;
 639                 break;
 640         case SLSB_CU_OUTPUT_PRIMED:
 641                 /* all buffers primed */
 642                 QDIO_DBF_TEXT5(0,trace,"outpprim");
 643                 break;
 644         default:
 645                 break;
 646         }
 647         QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
 648         return q->first_to_check;
 649 }
 650
 651 static int
 652 qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q *q)
 653 {
 654         struct qdio_irq *irq;
 655         unsigned char state;
 656         int tmp, ftc, count, cnt;
 657         char dbf_text[15];
 658
 659
 660         irq = (struct qdio_irq *) q->irq_ptr;
 661         ftc = q->first_to_check;
 662         count = qdio_min(atomic_read(&q->number_of_buffers_used),
 663                         (QDIO_MAX_BUFFERS_PER_Q-1));
 664         if (count == 0)
 665                  return q->first_to_check;
 666         cnt = qdio_do_eqbs(q, &state, &ftc, &count);
 667         if (cnt == 0)
 668                  return q->first_to_check;
 669         switch (state) {
 670         case SLSB_P_INPUT_ERROR :
 671 #ifdef CONFIG_QDIO_DEBUG
 672                 QDIO_DBF_TEXT3(1,trace,"inperr");
 673                 sprintf(dbf_text,"%2x,%2x",ftc,count);
 674                 QDIO_DBF_TEXT3(1,trace,dbf_text);
 675 #endif /* CONFIG_QDIO_DEBUG */
 676                 if (q->qdio_error)
 677                         q->error_status_flags |=
 678                                 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
 679                 q->qdio_error = SLSB_P_INPUT_ERROR;
 680                 q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR;
 681                 atomic_sub(cnt, &q->number_of_buffers_used);
 682                 q->first_to_check = ftc;
 683                 break;
 684         case SLSB_P_INPUT_PRIMED :
 685                 QDIO_DBF_TEXT3(0,trace,"inptprim");
 686                 sprintf(dbf_text,"%2x,%2x",ftc,count);
 687                 QDIO_DBF_TEXT3(1,trace,dbf_text);
 688                 tmp = 0;
 689                 ftc = q->first_to_check;
 690 #ifdef QDIO_USE_PROCESSING_STATE
 691                 if (cnt > 1) {
 692                         cnt -= 1;
 693                         tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
 694                         if (!tmp)
 695                                 break;
 696                 }
 697                 cnt = 1;
 698                 tmp += set_slsb(q, &ftc,
 699                                SLSB_P_INPUT_PROCESSING, &cnt);
 700                 atomic_set(&q->polling, 1);
 701 #else
 702                 tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt);
 703 #endif
 704                 atomic_sub(tmp, &q->number_of_buffers_used);
 705                 q->first_to_check = ftc;
 706                 break;
 707         case SLSB_CU_INPUT_EMPTY:
 708         case SLSB_P_INPUT_NOT_INIT:
 709         case SLSB_P_INPUT_PROCESSING:
 710                 QDIO_DBF_TEXT5(0,trace,"inpnipro");
 711                 break;
 712         default:
 713                 break;
 714         }
 715         QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
 716         return q->first_to_check;
 717 }
 718
 719 static int
 720 qdio_get_outbound_buffer_frontier(struct qdio_q *q)
 721 {
 722         struct qdio_irq *irq;
 723         volatile char *slsb;
 724         unsigned int count = 1;
 725         int first_not_to_check, f, f_mod_no;
 726         char dbf_text[15];
 727
 728         QDIO_DBF_TEXT4(0,trace,"getobfro");
 729         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 730
 731         irq = (struct qdio_irq *) q->irq_ptr;
 732         if (irq->is_qebsm)
 733                 return qdio_qebsm_get_outbound_buffer_frontier(q);
 734
 735         slsb=&q->slsb.acc.val[0];
 736         f_mod_no=f=q->first_to_check;
 737         /*
 738          * f points to already processed elements, so f+no_used is correct...
 739          * ... but: we don't check 128 buffers, as otherwise
 740          * qdio_has_outbound_q_moved would return 0
 741          */
 742         first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
 743                                       (QDIO_MAX_BUFFERS_PER_Q-1));
 744
 745         if (((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis)) ||
 746                  (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH))
 747                 SYNC_MEMORY;
 748
 749 check_next:
 750         if (f==first_not_to_check)
 751                 goto out;
 752
 753         switch(slsb[f_mod_no]) {
 754
 755         /* the adapter has not fetched the output yet */
 756         case SLSB_CU_OUTPUT_PRIMED:
 757                 QDIO_DBF_TEXT5(0,trace,"outpprim");
 758                 break;
 759
 760         /* the adapter got it */
 761         case SLSB_P_OUTPUT_EMPTY:
 762                 atomic_dec(&q->number_of_buffers_used);
 763                 f++;
 764                 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
 765                 QDIO_DBF_TEXT5(0,trace,"outpempt");
 766                 goto check_next;
 767
 768         case SLSB_P_OUTPUT_ERROR:
 769                 QDIO_DBF_TEXT3(0,trace,"outperr");
 770                 sprintf(dbf_text,"%x-%x-%x",f_mod_no,
 771                         q->sbal[f_mod_no]->element[14].sbalf.value,
 772                         q->sbal[f_mod_no]->element[15].sbalf.value);
 773                 QDIO_DBF_TEXT3(1,trace,dbf_text);
 774                 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
 775
 776                 /* kind of process the buffer */
 777                 set_slsb(q, &f_mod_no, SLSB_P_OUTPUT_NOT_INIT, &count);
 778
 779                 /*
 780                  * we increment the frontier, as this buffer
 781                  * was processed obviously
 782                  */
 783                 atomic_dec(&q->number_of_buffers_used);
 784                 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
 785
 786                 if (q->qdio_error)
 787                         q->error_status_flags|=
 788                                 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
 789                 q->qdio_error=SLSB_P_OUTPUT_ERROR;
 790                 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
 791
 792                 break;
 793
 794         /* no new buffers */
 795         default:
 796                 QDIO_DBF_TEXT5(0,trace,"outpni");
 797         }
 798 out:
 799         return (q->first_to_check=f_mod_no);
 800 }
 801
 802 /* all buffers are processed */
 803 static int
 804 qdio_is_outbound_q_done(struct qdio_q *q)
 805 {
 806         int no_used;
 807 #ifdef CONFIG_QDIO_DEBUG
 808         char dbf_text[15];
 809 #endif
 810
 811         no_used=atomic_read(&q->number_of_buffers_used);
 812
 813 #ifdef CONFIG_QDIO_DEBUG
 814         if (no_used) {
 815                 sprintf(dbf_text,"oqisnt%02x",no_used);
 816                 QDIO_DBF_TEXT4(0,trace,dbf_text);
 817         } else {
 818                 QDIO_DBF_TEXT4(0,trace,"oqisdone");
 819         }
 820         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 821 #endif /* CONFIG_QDIO_DEBUG */
 822         return (no_used==0);
 823 }
 824
 825 static int
 826 qdio_has_outbound_q_moved(struct qdio_q *q)
 827 {
 828         int i;
 829
 830         i=qdio_get_outbound_buffer_frontier(q);
 831
 832         if ( (i!=GET_SAVED_FRONTIER(q)) ||
 833              (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
 834                 SAVE_FRONTIER(q,i);
 835                 QDIO_DBF_TEXT4(0,trace,"oqhasmvd");
 836                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 837                 return 1;
 838         } else {
 839                 QDIO_DBF_TEXT4(0,trace,"oqhsntmv");
 840                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 841                 return 0;
 842         }
 843 }
 844
 845 static void
 846 qdio_kick_outbound_q(struct qdio_q *q)
 847 {
 848         int result;
 849 #ifdef CONFIG_QDIO_DEBUG
 850         char dbf_text[15];
 851
 852         QDIO_DBF_TEXT4(0,trace,"kickoutq");
 853         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 854 #endif /* CONFIG_QDIO_DEBUG */
 855
 856         if (!q->siga_out)
 857                 return;
 858
 859         /* here's the story with cc=2 and busy bit set (thanks, Rick):
 860          * VM's CP could present us cc=2 and busy bit set on SIGA-write
 861          * during reconfiguration of their Guest LAN (only in HIPERS mode,
 862          * QDIO mode is asynchronous -- cc=2 and busy bit there will take
 863          * the queues down immediately; and not being under VM we have a
 864          * problem on cc=2 and busy bit set right away).
 865          *
 866          * Therefore qdio_siga_output will try for a short time constantly,
 867          * if such a condition occurs. If it doesn't change, it will
 868          * increase the busy_siga_counter and save the timestamp, and
 869          * schedule the queue for later processing (via mark_q, using the
 870          * queue tasklet). __qdio_outbound_processing will check out the
 871          * counter. If non-zero, it will call qdio_kick_outbound_q as often
 872          * as the value of the counter. This will attempt further SIGA
 873          * instructions. For each successful SIGA, the counter is
 874          * decreased, for failing SIGAs the counter remains the same, after
 875          * all.
 876          * After some time of no movement, qdio_kick_outbound_q will
 877          * finally fail and reflect corresponding error codes to call
 878          * the upper layer module and have it take the queues down.
 879          *
 880          * Note that this is a change from the original HiperSockets design
 881          * (saying cc=2 and busy bit means take the queues down), but in
 882          * these days Guest LAN didn't exist... excessive cc=2 with busy bit
 883          * conditions will still take the queues down, but the threshold is
 884          * higher due to the Guest LAN environment.
 885          */
 886
 887
 888         result=qdio_siga_output(q);
 889
 890         switch (result) {
 891         case 0:
 892                 /* went smooth this time, reset timestamp */
 893 #ifdef CONFIG_QDIO_DEBUG
 894                 QDIO_DBF_TEXT3(0,trace,"cc2reslv");
 895                 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
 896                         atomic_read(&q->busy_siga_counter));
 897                 QDIO_DBF_TEXT3(0,trace,dbf_text);
 898 #endif /* CONFIG_QDIO_DEBUG */
 899                 q->timing.busy_start=0;
 900                 break;
 901         case (2|QDIO_SIGA_ERROR_B_BIT_SET):
 902                 /* cc=2 and busy bit: */
 903                 atomic_inc(&q->busy_siga_counter);
 904
 905                 /* if the last siga was successful, save
 906                  * timestamp here */
 907                 if (!q->timing.busy_start)
 908                         q->timing.busy_start=NOW;
 909
 910                 /* if we're in time, don't touch error_status_flags
 911                  * and siga_error */
 912                 if (NOW-q->timing.busy_start<QDIO_BUSY_BIT_GIVE_UP) {
 913                         qdio_mark_q(q);
 914                         break;
 915                 }
 916                 QDIO_DBF_TEXT2(0,trace,"cc2REPRT");
 917 #ifdef CONFIG_QDIO_DEBUG
 918                 sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no,
 919                         atomic_read(&q->busy_siga_counter));
 920                 QDIO_DBF_TEXT3(0,trace,dbf_text);
 921 #endif /* CONFIG_QDIO_DEBUG */
 922                 /* else fallthrough and report error */
 923         default:
 924                 /* for plain cc=1, 2 or 3: */
 925                 if (q->siga_error)
 926                         q->error_status_flags|=
 927                                 QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
 928                 q->error_status_flags|=
 929                         QDIO_STATUS_LOOK_FOR_ERROR;
 930                 q->siga_error=result;
 931         }
 932 }
 933
 934 static void
 935 qdio_kick_outbound_handler(struct qdio_q *q)
 936 {
 937         int start, end, real_end, count;
 938 #ifdef CONFIG_QDIO_DEBUG
 939         char dbf_text[15];
 940 #endif
 941
 942         start = q->first_element_to_kick;
 943         /* last_move_ftc was just updated */
 944         real_end = GET_SAVED_FRONTIER(q);
 945         end = (real_end+QDIO_MAX_BUFFERS_PER_Q-1)&
 946                 (QDIO_MAX_BUFFERS_PER_Q-1);
 947         count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)&
 948                 (QDIO_MAX_BUFFERS_PER_Q-1);
 949
 950 #ifdef CONFIG_QDIO_DEBUG
 951         QDIO_DBF_TEXT4(0,trace,"kickouth");
 952         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 953
 954         sprintf(dbf_text,"s=%2xc=%2x",start,count);
 955         QDIO_DBF_TEXT4(0,trace,dbf_text);
 956 #endif /* CONFIG_QDIO_DEBUG */
 957
 958         if (q->state==QDIO_IRQ_STATE_ACTIVE)
 959                 q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT|
 960                            q->error_status_flags,
 961                            q->qdio_error,q->siga_error,q->q_no,start,count,
 962                            q->int_parm);
 963
 964         /* for the next time: */
 965         q->first_element_to_kick=real_end;
 966         q->qdio_error=0;
 967         q->siga_error=0;
 968         q->error_status_flags=0;
 969 }
 970
 971 static void
 972 __qdio_outbound_processing(struct qdio_q *q)
 973 {
 974         int siga_attempts;
 975
 976         QDIO_DBF_TEXT4(0,trace,"qoutproc");
 977         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 978
 979         if (unlikely(qdio_reserve_q(q))) {
 980                 qdio_release_q(q);
 981                 qdio_perf_stat_inc(&perf_stats.outbound_tl_runs_resched);
 982                 /* as we're sissies, we'll check next time */
 983                 if (likely(!atomic_read(&q->is_in_shutdown))) {
 984                         qdio_mark_q(q);
 985                         QDIO_DBF_TEXT4(0,trace,"busy,agn");
 986                 }
 987                 return;
 988         }
 989         qdio_perf_stat_inc(&perf_stats.outbound_tl_runs);
 990         qdio_perf_stat_inc(&perf_stats.tl_runs);
 991
 992         /* see comment in qdio_kick_outbound_q */
 993         siga_attempts=atomic_read(&q->busy_siga_counter);
 994         while (siga_attempts) {
 995                 atomic_dec(&q->busy_siga_counter);
 996                 qdio_kick_outbound_q(q);
 997                 siga_attempts--;
 998         }
 999
1000         if (qdio_has_outbound_q_moved(q))
1001                 qdio_kick_outbound_handler(q);
1002
1003         if (q->queue_type == QDIO_ZFCP_QFMT) {
1004                 if ((!q->hydra_gives_outbound_pcis) &&
1005                     (!qdio_is_outbound_q_done(q)))
1006                         qdio_mark_q(q);
1007         }
1008         else if (((!q->is_iqdio_q) && (!q->is_pci_out)) ||
1009                  (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH)) {
1010                 /*
1011                  * make sure buffer switch from PRIMED to EMPTY is noticed
1012                  * and outbound_handler is called
1013                  */
1014                 if (qdio_is_outbound_q_done(q)) {
1015                         del_timer(&q->timer);
1016                 } else {
1017                         if (!timer_pending(&q->timer))
1018                                 mod_timer(&q->timer, jiffies +
1019                                           QDIO_FORCE_CHECK_TIMEOUT);
1020                 }
1021         }
1022
1023         qdio_release_q(q);
1024 }
1025
1026 static void
1027 qdio_outbound_processing(unsigned long q)
1028 {
1029         __qdio_outbound_processing((struct qdio_q *) q);
1030 }
1031
1032 /************************* INBOUND ROUTINES *******************************/
1033
1034
1035 static int
1036 qdio_get_inbound_buffer_frontier(struct qdio_q *q)
1037 {
1038         struct qdio_irq *irq;
1039         int f,f_mod_no;
1040         volatile char *slsb;
1041         unsigned int count = 1;
1042         int first_not_to_check;
1043 #ifdef CONFIG_QDIO_DEBUG
1044         char dbf_text[15];
1045 #endif /* CONFIG_QDIO_DEBUG */
1046 #ifdef QDIO_USE_PROCESSING_STATE
1047         int last_position=-1;
1048 #endif /* QDIO_USE_PROCESSING_STATE */
1049
1050         QDIO_DBF_TEXT4(0,trace,"getibfro");
1051         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1052
1053         irq = (struct qdio_irq *) q->irq_ptr;
1054         if (irq->is_qebsm)
1055                 return qdio_qebsm_get_inbound_buffer_frontier(q);
1056
1057         slsb=&q->slsb.acc.val[0];
1058         f_mod_no=f=q->first_to_check;
1059         /*
1060          * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
1061          * would return 0
1062          */
1063         first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
1064                                       (QDIO_MAX_BUFFERS_PER_Q-1));
1065
1066         /*
1067          * we don't use this one, as a PCI or we after a thin interrupt
1068          * will sync the queues
1069          */
1070         /* SYNC_MEMORY;*/
1071
1072 check_next:
1073         f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
1074         if (f==first_not_to_check)
1075                 goto out;
1076         switch (slsb[f_mod_no]) {
1077
1078         /* CU_EMPTY means frontier is reached */
1079         case SLSB_CU_INPUT_EMPTY:
1080                 QDIO_DBF_TEXT5(0,trace,"inptempt");
1081                 break;
1082
1083         /* P_PRIMED means set slsb to P_PROCESSING and move on */
1084         case SLSB_P_INPUT_PRIMED:
1085                 QDIO_DBF_TEXT5(0,trace,"inptprim");
1086
1087 #ifdef QDIO_USE_PROCESSING_STATE
1088                 /*
1089                  * as soon as running under VM, polling the input queues will
1090                  * kill VM in terms of CP overhead
1091                  */
1092                 if (q->siga_sync) {
1093                         set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1094                 } else {
1095                         /* set the previous buffer to NOT_INIT. The current
1096                          * buffer will be set to PROCESSING at the end of
1097                          * this function to avoid further interrupts. */
1098                         if (last_position>=0)
1099                                 set_slsb(q, &last_position,
1100                                          SLSB_P_INPUT_NOT_INIT, &count);
1101                         atomic_set(&q->polling,1);
1102                         last_position=f_mod_no;
1103                 }
1104 #else /* QDIO_USE_PROCESSING_STATE */
1105                 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1106 #endif /* QDIO_USE_PROCESSING_STATE */
1107                 /*
1108                  * not needed, as the inbound queue will be synced on the next
1109                  * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
1110                  */
1111                 /*SYNC_MEMORY;*/
1112                 f++;
1113                 atomic_dec(&q->number_of_buffers_used);
1114                 goto check_next;
1115
1116         case SLSB_P_INPUT_NOT_INIT:
1117         case SLSB_P_INPUT_PROCESSING:
1118                 QDIO_DBF_TEXT5(0,trace,"inpnipro");
1119                 break;
1120
1121         /* P_ERROR means frontier is reached, break and report error */
1122         case SLSB_P_INPUT_ERROR:
1123 #ifdef CONFIG_QDIO_DEBUG
1124                 sprintf(dbf_text,"inperr%2x",f_mod_no);
1125                 QDIO_DBF_TEXT3(1,trace,dbf_text);
1126 #endif /* CONFIG_QDIO_DEBUG */
1127                 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
1128
1129                 /* kind of process the buffer */
1130                 set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count);
1131
1132                 if (q->qdio_error)
1133                         q->error_status_flags|=
1134                                 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
1135                 q->qdio_error=SLSB_P_INPUT_ERROR;
1136                 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
1137
1138                 /* we increment the frontier, as this buffer
1139                  * was processed obviously */
1140                 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1141                 atomic_dec(&q->number_of_buffers_used);
1142
1143 #ifdef QDIO_USE_PROCESSING_STATE
1144                 last_position=-1;
1145 #endif /* QDIO_USE_PROCESSING_STATE */
1146
1147                 break;
1148
1149         /* everything else means frontier not changed (HALTED or so) */
1150         default:
1151                 break;
1152         }
1153 out:
1154         q->first_to_check=f_mod_no;
1155
1156 #ifdef QDIO_USE_PROCESSING_STATE
1157         if (last_position>=0)
1158                 set_slsb(q, &last_position, SLSB_P_INPUT_PROCESSING, &count);
1159 #endif /* QDIO_USE_PROCESSING_STATE */
1160
1161         QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
1162
1163         return q->first_to_check;
1164 }
1165
1166 static int
1167 qdio_has_inbound_q_moved(struct qdio_q *q)
1168 {
1169         int i;
1170
1171         i=qdio_get_inbound_buffer_frontier(q);
1172         if ( (i!=GET_SAVED_FRONTIER(q)) ||
1173              (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
1174                 SAVE_FRONTIER(q,i);
1175                 if ((!q->siga_sync)&&(!q->hydra_gives_outbound_pcis))
1176                         SAVE_TIMESTAMP(q);
1177
1178                 QDIO_DBF_TEXT4(0,trace,"inhasmvd");
1179                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1180                 return 1;
1181         } else {
1182                 QDIO_DBF_TEXT4(0,trace,"inhsntmv");
1183                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1184                 return 0;
1185         }
1186 }
1187
1188 /* means, no more buffers to be filled */
1189 static int
1190 tiqdio_is_inbound_q_done(struct qdio_q *q)
1191 {
1192         int no_used;
1193         unsigned int start_buf, count;
1194         unsigned char state = 0;
1195         struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1196
1197 #ifdef CONFIG_QDIO_DEBUG
1198         char dbf_text[15];
1199 #endif
1200
1201         no_used=atomic_read(&q->number_of_buffers_used);
1202
1203         /* propagate the change from 82 to 80 through VM */
1204         SYNC_MEMORY;
1205
1206 #ifdef CONFIG_QDIO_DEBUG
1207         if (no_used) {
1208                 sprintf(dbf_text,"iqisnt%02x",no_used);
1209                 QDIO_DBF_TEXT4(0,trace,dbf_text);
1210         } else {
1211                 QDIO_DBF_TEXT4(0,trace,"iniqisdo");
1212         }
1213         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1214 #endif /* CONFIG_QDIO_DEBUG */
1215
1216         if (!no_used)
1217                 return 1;
1218         if (!q->siga_sync && !irq->is_qebsm)
1219                 /* we'll check for more primed buffers in qeth_stop_polling */
1220                 return 0;
1221         if (irq->is_qebsm) {
1222                 count = 1;
1223                 start_buf = q->first_to_check;
1224                 qdio_do_eqbs(q, &state, &start_buf, &count);
1225         } else
1226                 state = q->slsb.acc.val[q->first_to_check];
1227         if (state != SLSB_P_INPUT_PRIMED)
1228                 /*
1229                  * nothing more to do, if next buffer is not PRIMED.
1230                  * note that we did a SYNC_MEMORY before, that there
1231                  * has been a sychnronization.
1232                  * we will return 0 below, as there is nothing to do
1233                  * (stop_polling not necessary, as we have not been
1234                  * using the PROCESSING state
1235                  */
1236                 return 0;
1237
1238         /*
1239          * ok, the next input buffer is primed. that means, that device state
1240          * change indicator and adapter local summary are set, so we will find
1241          * it next time.
1242          * we will return 0 below, as there is nothing to do, except scheduling
1243          * ourselves for the next time.
1244          */
1245         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1246         tiqdio_sched_tl();
1247         return 0;
1248 }
1249
1250 static int
1251 qdio_is_inbound_q_done(struct qdio_q *q)
1252 {
1253         int no_used;
1254         unsigned int start_buf, count;
1255         unsigned char state = 0;
1256         struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
1257
1258 #ifdef CONFIG_QDIO_DEBUG
1259         char dbf_text[15];
1260 #endif
1261
1262         no_used=atomic_read(&q->number_of_buffers_used);
1263
1264         /*
1265          * we need that one for synchronization with the adapter, as it
1266          * does a kind of PCI avoidance
1267          */
1268         SYNC_MEMORY;
1269
1270         if (!no_used) {
1271                 QDIO_DBF_TEXT4(0,trace,"inqisdnA");
1272                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1273                 return 1;
1274         }
1275         if (irq->is_qebsm) {
1276                 count = 1;
1277                 start_buf = q->first_to_check;
1278                 qdio_do_eqbs(q, &state, &start_buf, &count);
1279         } else
1280                 state = q->slsb.acc.val[q->first_to_check];
1281         if (state == SLSB_P_INPUT_PRIMED) {
1282                 /* we got something to do */
1283                 QDIO_DBF_TEXT4(0,trace,"inqisntA");
1284                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1285                 return 0;
1286         }
1287
1288         /* on VM, we don't poll, so the q is always done here */
1289         if (q->siga_sync)
1290                 return 1;
1291         if (q->hydra_gives_outbound_pcis)
1292                 return 1;
1293
1294         /*
1295          * at this point we know, that inbound first_to_check
1296          * has (probably) not moved (see qdio_inbound_processing)
1297          */
1298         if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) {
1299 #ifdef CONFIG_QDIO_DEBUG
1300                 QDIO_DBF_TEXT4(0,trace,"inqisdon");
1301                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1302                 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1303                 QDIO_DBF_TEXT4(0,trace,dbf_text);
1304 #endif /* CONFIG_QDIO_DEBUG */
1305                 return 1;
1306         } else {
1307 #ifdef CONFIG_QDIO_DEBUG
1308                 QDIO_DBF_TEXT4(0,trace,"inqisntd");
1309                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1310                 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1311                 QDIO_DBF_TEXT4(0,trace,dbf_text);
1312 #endif /* CONFIG_QDIO_DEBUG */
1313                 return 0;
1314         }
1315 }
1316
1317 static void
1318 qdio_kick_inbound_handler(struct qdio_q *q)
1319 {
1320         int count, start, end, real_end, i;
1321 #ifdef CONFIG_QDIO_DEBUG
1322         char dbf_text[15];
1323 #endif
1324
1325         QDIO_DBF_TEXT4(0,trace,"kickinh");
1326         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1327
1328         start=q->first_element_to_kick;
1329         real_end=q->first_to_check;
1330         end=(real_end+QDIO_MAX_BUFFERS_PER_Q-1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1331
1332         i=start;
1333         count=0;
1334         while (1) {
1335                 count++;
1336                 if (i==end)
1337                         break;
1338                 i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1339         }
1340
1341 #ifdef CONFIG_QDIO_DEBUG
1342         sprintf(dbf_text,"s=%2xc=%2x",start,count);
1343         QDIO_DBF_TEXT4(0,trace,dbf_text);
1344 #endif /* CONFIG_QDIO_DEBUG */
1345
1346         if (likely(q->state==QDIO_IRQ_STATE_ACTIVE))
1347                 q->handler(q->cdev,
1348                            QDIO_STATUS_INBOUND_INT|q->error_status_flags,
1349                            q->qdio_error,q->siga_error,q->q_no,start,count,
1350                            q->int_parm);
1351
1352         /* for the next time: */
1353         q->first_element_to_kick=real_end;
1354         q->qdio_error=0;
1355         q->siga_error=0;
1356         q->error_status_flags=0;
1357
1358         qdio_perf_stat_inc(&perf_stats.inbound_cnt);
1359 }
1360
1361 static void
1362 __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
1363 {
1364         struct qdio_irq *irq_ptr;
1365         struct qdio_q *oq;
1366         int i;
1367
1368         QDIO_DBF_TEXT4(0,trace,"iqinproc");
1369         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1370
1371         /*
1372          * we first want to reserve the q, so that we know, that we don't
1373          * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1374          * be set
1375          */
1376         if (unlikely(qdio_reserve_q(q))) {
1377                 qdio_release_q(q);
1378                 qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs_resched);
1379                 /*
1380                  * as we might just be about to stop polling, we make
1381                  * sure that we check again at least once more
1382                  */
1383                 tiqdio_sched_tl();
1384                 return;
1385         }
1386         qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs);
1387         if (unlikely(atomic_read(&q->is_in_shutdown))) {
1388                 qdio_unmark_q(q);
1389                 goto out;
1390         }
1391
1392         /*
1393          * we reset spare_ind_was_set, when the queue does not use the
1394          * spare indicator
1395          */
1396         if (spare_ind_was_set)
1397                 spare_ind_was_set = (q->dev_st_chg_ind == &spare_indicator);
1398
1399         if (!(*(q->dev_st_chg_ind)) && !spare_ind_was_set)
1400                 goto out;
1401         /*
1402          * q->dev_st_chg_ind is the indicator, be it shared or not.
1403          * only clear it, if indicator is non-shared
1404          */
1405         if (!spare_ind_was_set)
1406                 tiqdio_clear_summary_bit((__u32*)q->dev_st_chg_ind);
1407
1408         if (q->hydra_gives_outbound_pcis) {
1409                 if (!q->siga_sync_done_on_thinints) {
1410                         SYNC_MEMORY_ALL;
1411                 } else if (!q->siga_sync_done_on_outb_tis) {
1412                         SYNC_MEMORY_ALL_OUTB;
1413                 }
1414         } else {
1415                 SYNC_MEMORY;
1416         }
1417         /*
1418          * maybe we have to do work on our outbound queues... at least
1419          * we have to check the outbound-int-capable thinint-capable
1420          * queues
1421          */
1422         if (q->hydra_gives_outbound_pcis) {
1423                 irq_ptr = (struct qdio_irq*)q->irq_ptr;
1424                 for (i=0;i<irq_ptr->no_output_qs;i++) {
1425                         oq = irq_ptr->output_qs[i];
1426                         if (!qdio_is_outbound_q_done(oq)) {
1427                                 qdio_perf_stat_dec(&perf_stats.tl_runs);
1428                                 __qdio_outbound_processing(oq);
1429                         }
1430                 }
1431         }
1432
1433         if (!qdio_has_inbound_q_moved(q))
1434                 goto out;
1435
1436         qdio_kick_inbound_handler(q);
1437         if (tiqdio_is_inbound_q_done(q))
1438                 if (!qdio_stop_polling(q)) {
1439                         /*
1440                          * we set the flags to get into the stuff next time,
1441                          * see also comment in qdio_stop_polling
1442                          */
1443                         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1444                         tiqdio_sched_tl();
1445                 }
1446 out:
1447         qdio_release_q(q);
1448 }
1449
1450 static void
1451 tiqdio_inbound_processing(unsigned long q)
1452 {
1453         __tiqdio_inbound_processing((struct qdio_q *) q,
1454                                     atomic_read(&spare_indicator_usecount));
1455 }
1456
1457 static void
1458 __qdio_inbound_processing(struct qdio_q *q)
1459 {
1460         int q_laps=0;
1461
1462         QDIO_DBF_TEXT4(0,trace,"qinproc");
1463         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1464
1465         if (unlikely(qdio_reserve_q(q))) {
1466                 qdio_release_q(q);
1467                 qdio_perf_stat_inc(&perf_stats.inbound_tl_runs_resched);
1468                 /* as we're sissies, we'll check next time */
1469                 if (likely(!atomic_read(&q->is_in_shutdown))) {
1470                         qdio_mark_q(q);
1471                         QDIO_DBF_TEXT4(0,trace,"busy,agn");
1472                 }
1473                 return;
1474         }
1475         qdio_perf_stat_inc(&perf_stats.inbound_tl_runs);
1476         qdio_perf_stat_inc(&perf_stats.tl_runs);
1477
1478 again:
1479         if (qdio_has_inbound_q_moved(q)) {
1480                 qdio_kick_inbound_handler(q);
1481                 if (!qdio_stop_polling(q)) {
1482                         q_laps++;
1483                         if (q_laps<QDIO_Q_LAPS)
1484                                 goto again;
1485                 }
1486                 qdio_mark_q(q);
1487         } else {
1488                 if (!qdio_is_inbound_q_done(q))
1489                         /* means poll time is not yet over */
1490                         qdio_mark_q(q);
1491         }
1492
1493         qdio_release_q(q);
1494 }
1495
1496 static void
1497 qdio_inbound_processing(unsigned long q)
1498 {
1499         __qdio_inbound_processing((struct qdio_q *) q);
1500 }
1501
1502 /************************* MAIN ROUTINES *******************************/
1503
1504 #ifdef QDIO_USE_PROCESSING_STATE
1505 static int
1506 tiqdio_reset_processing_state(struct qdio_q *q, int q_laps)
1507 {
1508         if (!q) {
1509                 tiqdio_sched_tl();
1510                 return 0;
1511         }
1512
1513         /*
1514          * under VM, we have not used the PROCESSING state, so no
1515          * need to stop polling
1516          */
1517         if (q->siga_sync)
1518                 return 2;
1519
1520         if (unlikely(qdio_reserve_q(q))) {
1521                 qdio_release_q(q);
1522                 qdio_perf_stat_inc(&perf_stats.inbound_thin_tl_runs_resched);
1523                 /*
1524                  * as we might just be about to stop polling, we make
1525                  * sure that we check again at least once more
1526                  */
1527
1528                 /*
1529                  * sanity -- we'd get here without setting the
1530                  * dev st chg ind
1531                  */
1532                 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1533                 tiqdio_sched_tl();
1534                 return 0;
1535         }
1536         if (qdio_stop_polling(q)) {
1537                 qdio_release_q(q);
1538                 return 2;
1539         }
1540         if (q_laps<QDIO_Q_LAPS-1) {
1541                 qdio_release_q(q);
1542                 return 3;
1543         }
1544         /*
1545          * we set the flags to get into the stuff
1546          * next time, see also comment in qdio_stop_polling
1547          */
1548         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1549         tiqdio_sched_tl();
1550         qdio_release_q(q);
1551         return 1;
1552
1553 }
1554 #endif /* QDIO_USE_PROCESSING_STATE */
1555
1556 static void
1557 tiqdio_inbound_checks(void)
1558 {
1559         struct qdio_q *q;
1560         int spare_ind_was_set=0;
1561 #ifdef QDIO_USE_PROCESSING_STATE
1562         int q_laps=0;
1563 #endif /* QDIO_USE_PROCESSING_STATE */
1564
1565         QDIO_DBF_TEXT4(0,trace,"iqdinbck");
1566         QDIO_DBF_TEXT5(0,trace,"iqlocsum");
1567
1568 #ifdef QDIO_USE_PROCESSING_STATE
1569 again:
1570 #endif /* QDIO_USE_PROCESSING_STATE */
1571
1572         /* when the spare indicator is used and set, save that and clear it */
1573         if ((atomic_read(&spare_indicator_usecount)) && spare_indicator) {
1574                 spare_ind_was_set = 1;
1575                 tiqdio_clear_summary_bit((__u32*)&spare_indicator);
1576         }
1577
1578         q=(struct qdio_q*)tiq_list;
1579         do {
1580                 if (!q)
1581                         break;
1582                 __tiqdio_inbound_processing(q, spare_ind_was_set);
1583                 q=(struct qdio_q*)q->list_next;
1584         } while (q!=(struct qdio_q*)tiq_list);
1585
1586 #ifdef QDIO_USE_PROCESSING_STATE
1587         q=(struct qdio_q*)tiq_list;
1588         do {
1589                 int ret;
1590
1591                 ret = tiqdio_reset_processing_state(q, q_laps);
1592                 switch (ret) {
1593                 case 0:
1594                         return;
1595                 case 1:
1596                         q_laps++;
1597                 case 2:
1598                         q = (struct qdio_q*)q->list_next;
1599                         break;
1600                 default:
1601                         q_laps++;
1602                         goto again;
1603                 }
1604         } while (q!=(struct qdio_q*)tiq_list);
1605 #endif /* QDIO_USE_PROCESSING_STATE */
1606 }
1607
1608 static void
1609 tiqdio_tl(unsigned long data)
1610 {
1611         QDIO_DBF_TEXT4(0,trace,"iqdio_tl");
1612
1613         qdio_perf_stat_inc(&perf_stats.tl_runs);
1614
1615         tiqdio_inbound_checks();
1616 }
1617
1618 /********************* GENERAL HELPER_ROUTINES ***********************/
1619
1620 static void
1621 qdio_release_irq_memory(struct qdio_irq *irq_ptr)
1622 {
1623         int i;
1624         struct qdio_q *q;
1625
1626         for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
1627                 q = irq_ptr->input_qs[i];
1628                 if (q) {
1629                         free_page((unsigned long) q->slib);
1630                         kmem_cache_free(qdio_q_cache, q);
1631                 }
1632                 q = irq_ptr->output_qs[i];
1633                 if (q) {
1634                         free_page((unsigned long) q->slib);
1635                         kmem_cache_free(qdio_q_cache, q);
1636                 }
1637         }
1638         free_page((unsigned long) irq_ptr->qdr);
1639         free_page((unsigned long) irq_ptr);
1640 }
1641
1642 static void
1643 qdio_set_impl_params(struct qdio_irq *irq_ptr,
1644                      unsigned int qib_param_field_format,
1645                      /* pointer to 128 bytes or NULL, if no param field */
1646                      unsigned char *qib_param_field,
1647                      /* pointer to no_queues*128 words of data or NULL */
1648                      unsigned int no_input_qs,
1649                      unsigned int no_output_qs,
1650                      unsigned long *input_slib_elements,
1651                      unsigned long *output_slib_elements)
1652 {
1653         int i,j;
1654
1655         if (!irq_ptr)
1656                 return;
1657
1658         irq_ptr->qib.pfmt=qib_param_field_format;
1659         if (qib_param_field)
1660                 memcpy(irq_ptr->qib.parm,qib_param_field,
1661                        QDIO_MAX_BUFFERS_PER_Q);
1662
1663         if (input_slib_elements)
1664                 for (i=0;i<no_input_qs;i++) {
1665                         for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1666                                 irq_ptr->input_qs[i]->slib->slibe[j].parms=
1667                                         input_slib_elements[
1668                                                 i*QDIO_MAX_BUFFERS_PER_Q+j];
1669                 }
1670         if (output_slib_elements)
1671                 for (i=0;i<no_output_qs;i++) {
1672                         for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1673                                 irq_ptr->output_qs[i]->slib->slibe[j].parms=
1674                                         output_slib_elements[
1675                                                 i*QDIO_MAX_BUFFERS_PER_Q+j];
1676                 }
1677 }
1678
1679 static int
1680 qdio_alloc_qs(struct qdio_irq *irq_ptr,
1681               int no_input_qs, int no_output_qs)
1682 {
1683         int i;
1684         struct qdio_q *q;
1685
1686         for (i = 0; i < no_input_qs; i++) {
1687                 q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
1688                 if (!q)
1689                         return -ENOMEM;
1690                 memset(q, 0, sizeof(*q));
1691
1692                 q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
1693                 if (!q->slib) {
1694                         kmem_cache_free(qdio_q_cache, q);
1695                         return -ENOMEM;
1696                 }
1697                 irq_ptr->input_qs[i]=q;
1698         }
1699
1700         for (i = 0; i < no_output_qs; i++) {
1701                 q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
1702                 if (!q)
1703                         return -ENOMEM;
1704                 memset(q, 0, sizeof(*q));
1705
1706                 q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
1707                 if (!q->slib) {
1708                         kmem_cache_free(qdio_q_cache, q);
1709                         return -ENOMEM;
1710                 }
1711                 irq_ptr->output_qs[i]=q;
1712         }
1713         return 0;
1714 }
1715
1716 static void
1717 qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev,
1718              int no_input_qs, int no_output_qs,
1719              qdio_handler_t *input_handler,
1720              qdio_handler_t *output_handler,
1721              unsigned long int_parm,int q_format,
1722              unsigned long flags,
1723              void **inbound_sbals_array,
1724              void **outbound_sbals_array)
1725 {
1726         struct qdio_q *q;
1727         int i,j;
1728         char dbf_text[20]; /* see qdio_initialize */
1729         void *ptr;
1730         int available;
1731
1732         sprintf(dbf_text,"qfqs%4x",cdev->private->schid.sch_no);
1733         QDIO_DBF_TEXT0(0,setup,dbf_text);
1734         for (i=0;i<no_input_qs;i++) {
1735                 q=irq_ptr->input_qs[i];
1736
1737                 memset(q,0,((char*)&q->slib)-((char*)q));
1738                 sprintf(dbf_text,"in-q%4x",i);
1739                 QDIO_DBF_TEXT0(0,setup,dbf_text);
1740                 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1741
1742                 memset(q->slib,0,PAGE_SIZE);
1743                 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1744
1745                 available=0;
1746
1747                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1748                         q->sbal[j]=*(inbound_sbals_array++);
1749
1750                 q->queue_type=q_format;
1751                 q->int_parm=int_parm;
1752                 q->schid = irq_ptr->schid;
1753                 q->irq_ptr = irq_ptr;
1754                 q->cdev = cdev;
1755                 q->mask=1<<(31-i);
1756                 q->q_no=i;
1757                 q->is_input_q=1;
1758                 q->first_to_check=0;
1759                 q->last_move_ftc=0;
1760                 q->handler=input_handler;
1761                 q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
1762
1763                 /* q->is_thinint_q isn't valid at this time, but
1764                  * irq_ptr->is_thinint_irq is
1765                  */
1766                 if (irq_ptr->is_thinint_irq)
1767                         tasklet_init(&q->tasklet, tiqdio_inbound_processing,
1768                                      (unsigned long) q);
1769                 else
1770                         tasklet_init(&q->tasklet, qdio_inbound_processing,
1771                                      (unsigned long) q);
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 */
1802                 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                 }
1807         }
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;
1826                 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;
1830                 q->int_parm=int_parm;
1831                 q->is_input_q=0;
1832                 q->is_pci_out = 0;
1833                 q->schid = irq_ptr->schid;
1834                 q->cdev = cdev;
1835                 q->irq_ptr = irq_ptr;
1836                 q->mask=1<<(31-i);
1837                 q->q_no=i;
1838                 q->first_to_check=0;
1839                 q->last_move_ftc=0;
1840                 q->handler=output_handler;
1841
1842                 tasklet_init(&q->tasklet, qdio_outbound_processing,
1843                              (unsigned long) q);
1844                 setup_timer(&q->timer, qdio_outbound_processing,
1845                             (unsigned long) q);
1846
1847                 atomic_set(&q->busy_siga_counter,0);
1848                 q->timing.busy_start=0;
1849
1850                 /* fill in slib */
1851                 if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba=
1852                                  (unsigned long)(q->slib);
1853                 q->slib->sla=(unsigned long)(q->sl);
1854                 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1855
1856                 /* fill in sl */
1857                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1858                         q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1859
1860                 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1861                 ptr=(void*)q->sl;
1862                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1863                 ptr=(void*)&q->slsb;
1864                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1865                 ptr=(void*)q->sbal[0];
1866                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1867
1868                 /* fill in slsb */
1869                 if (!irq_ptr->is_qebsm) {
1870                         unsigned int count = 1;
1871                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
1872                                 set_slsb(q, &j, SLSB_P_OUTPUT_NOT_INIT, &count);
1873                 }
1874         }
1875 }
1876
1877 static void
1878 qdio_fill_thresholds(struct qdio_irq *irq_ptr,
1879                      unsigned int no_input_qs,
1880                      unsigned int no_output_qs,
1881                      unsigned int min_input_threshold,
1882                      unsigned int max_input_threshold,
1883                      unsigned int min_output_threshold,
1884                      unsigned int max_output_threshold)
1885 {
1886         int i;
1887         struct qdio_q *q;
1888
1889         for (i=0;i<no_input_qs;i++) {
1890                 q=irq_ptr->input_qs[i];
1891                 q->timing.threshold=max_input_threshold;
1892 /*              for (j=0;j<QDIO_STATS_CLASSES;j++) {
1893                         q->threshold_classes[j].threshold=
1894                                 min_input_threshold+
1895                                 (max_input_threshold-min_input_threshold)/
1896                                 QDIO_STATS_CLASSES;
1897                 }
1898                 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1899         }
1900         for (i=0;i<no_output_qs;i++) {
1901                 q=irq_ptr->output_qs[i];
1902                 q->timing.threshold=max_output_threshold;
1903 /*              for (j=0;j<QDIO_STATS_CLASSES;j++) {
1904                         q->threshold_classes[j].threshold=
1905                                 min_output_threshold+
1906                                 (max_output_threshold-min_output_threshold)/
1907                                 QDIO_STATS_CLASSES;
1908                 }
1909                 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1910         }
1911 }
1912
1913 static void tiqdio_thinint_handler(void *ind, void *drv_data)
1914 {
1915         QDIO_DBF_TEXT4(0,trace,"thin_int");
1916
1917         qdio_perf_stat_inc(&perf_stats.thinints);
1918
1919         /* SVS only when needed:
1920          * issue SVS to benefit from iqdio interrupt avoidance
1921          * (SVS clears AISOI)*/
1922         if (!omit_svs)
1923                 tiqdio_clear_global_summary();
1924
1925         tiqdio_inbound_checks();
1926 }
1927
1928 static void
1929 qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state)
1930 {
1931         int i;
1932 #ifdef CONFIG_QDIO_DEBUG
1933         char dbf_text[15];
1934
1935         QDIO_DBF_TEXT5(0,trace,"newstate");
1936         sprintf(dbf_text,"%4x%4x",irq_ptr->schid.sch_no,state);
1937         QDIO_DBF_TEXT5(0,trace,dbf_text);
1938 #endif /* CONFIG_QDIO_DEBUG */
1939
1940         irq_ptr->state=state;
1941         for (i=0;i<irq_ptr->no_input_qs;i++)
1942                 irq_ptr->input_qs[i]->state=state;
1943         for (i=0;i<irq_ptr->no_output_qs;i++)
1944                 irq_ptr->output_qs[i]->state=state;
1945         mb();
1946 }
1947
1948 static void
1949 qdio_irq_check_sense(struct subchannel_id schid, struct irb *irb)
1950 {
1951         char dbf_text[15];
1952
1953         if (irb->esw.esw0.erw.cons) {
1954                 sprintf(dbf_text,"sens%4x",schid.sch_no);
1955                 QDIO_DBF_TEXT2(1,trace,dbf_text);
1956                 QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN);
1957
1958                 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1959                 QDIO_HEXDUMP16(WARN,"irb: ",irb);
1960                 QDIO_HEXDUMP16(WARN,"sense data: ",irb->ecw);
1961         }
1962
1963 }
1964
1965 static void
1966 qdio_handle_pci(struct qdio_irq *irq_ptr)
1967 {
1968         int i;
1969         struct qdio_q *q;
1970
1971         qdio_perf_stat_inc(&perf_stats.pcis);
1972         for (i=0;i<irq_ptr->no_input_qs;i++) {
1973                 q=irq_ptr->input_qs[i];
1974                 if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
1975                         qdio_mark_q(q);
1976                 else {
1977                         qdio_perf_stat_dec(&perf_stats.tl_runs);
1978                         __qdio_inbound_processing(q);
1979                 }
1980         }
1981         if (!irq_ptr->hydra_gives_outbound_pcis)
1982                 return;
1983         for (i=0;i<irq_ptr->no_output_qs;i++) {
1984                 q=irq_ptr->output_qs[i];
1985                 if (qdio_is_outbound_q_done(q))
1986                         continue;
1987                 qdio_perf_stat_dec(&perf_stats.tl_runs);
1988                 if (!irq_ptr->sync_done_on_outb_pcis)
1989                         SYNC_MEMORY;
1990                 __qdio_outbound_processing(q);
1991         }
1992 }
1993
1994 static void qdio_establish_handle_irq(struct ccw_device*, int, int);
1995
1996 static void
1997 qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm,
1998                            int cstat, int dstat)
1999 {
2000         struct qdio_irq *irq_ptr;
2001         struct qdio_q *q;
2002         char dbf_text[15];
2003
2004         irq_ptr = cdev->private->qdio_data;
2005
2006         QDIO_DBF_TEXT2(1, trace, "ick2");
2007         sprintf(dbf_text,"%s", cdev->dev.bus_id);
2008         QDIO_DBF_TEXT2(1,trace,dbf_text);
2009         QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int));
2010         QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2011         QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2012         QDIO_PRINT_ERR("received check condition on activate " \
2013                        "queues on device %s (cs=x%x, ds=x%x).\n",
2014                        cdev->dev.bus_id, cstat, dstat);
2015         if (irq_ptr->no_input_qs) {
2016                 q=irq_ptr->input_qs[0];
2017         } else if (irq_ptr->no_output_qs) {
2018                 q=irq_ptr->output_qs[0];
2019         } else {
2020                 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
2021                                cdev->dev.bus_id);
2022                 goto omit_handler_call;
2023         }
2024         q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
2025                    QDIO_STATUS_LOOK_FOR_ERROR,
2026                    0,0,0,-1,-1,q->int_parm);
2027 omit_handler_call:
2028         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED);
2029
2030 }
2031
2032 static void
2033 qdio_call_shutdown(struct work_struct *work)
2034 {
2035         struct ccw_device_private *priv;
2036         struct ccw_device *cdev;
2037
2038         priv = container_of(work, struct ccw_device_private, kick_work);
2039         cdev = priv->cdev;
2040         qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2041         put_device(&cdev->dev);
2042 }
2043
2044 static void
2045 qdio_timeout_handler(struct ccw_device *cdev)
2046 {
2047         struct qdio_irq *irq_ptr;
2048         char dbf_text[15];
2049
2050         QDIO_DBF_TEXT2(0, trace, "qtoh");
2051         sprintf(dbf_text, "%s", cdev->dev.bus_id);
2052         QDIO_DBF_TEXT2(0, trace, dbf_text);
2053
2054         irq_ptr = cdev->private->qdio_data;
2055         sprintf(dbf_text, "state:%d", irq_ptr->state);
2056         QDIO_DBF_TEXT2(0, trace, dbf_text);
2057
2058         switch (irq_ptr->state) {
2059         case QDIO_IRQ_STATE_INACTIVE:
2060                 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n",
2061                                irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2062                 QDIO_DBF_TEXT2(1,setup,"eq:timeo");
2063                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2064                 break;
2065         case QDIO_IRQ_STATE_CLEANUP:
2066                 QDIO_PRINT_INFO("Did not get interrupt on cleanup, "
2067                                 "irq=0.%x.%x.\n",
2068                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2069                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2070                 break;
2071         case QDIO_IRQ_STATE_ESTABLISHED:
2072         case QDIO_IRQ_STATE_ACTIVE:
2073                 /* I/O has been terminated by common I/O layer. */
2074                 QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n",
2075                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2076                 QDIO_DBF_TEXT2(1, trace, "cio:term");
2077                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
2078                 if (get_device(&cdev->dev)) {
2079                         /* Can't call shutdown from interrupt context. */
2080                         PREPARE_WORK(&cdev->private->kick_work,
2081                                      qdio_call_shutdown);
2082                         queue_work(ccw_device_work, &cdev->private->kick_work);
2083                 }
2084                 break;
2085         default:
2086                 BUG();
2087         }
2088         ccw_device_set_timeout(cdev, 0);
2089         wake_up(&cdev->private->wait_q);
2090 }
2091
2092 static void
2093 qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
2094 {
2095         struct qdio_irq *irq_ptr;
2096         int cstat,dstat;
2097         char dbf_text[15];
2098
2099 #ifdef CONFIG_QDIO_DEBUG
2100         QDIO_DBF_TEXT4(0, trace, "qint");
2101         sprintf(dbf_text, "%s", cdev->dev.bus_id);
2102         QDIO_DBF_TEXT4(0, trace, dbf_text);
2103 #endif /* CONFIG_QDIO_DEBUG */
2104
2105         if (!intparm) {
2106                 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
2107                                   "handler, device %s\n", cdev->dev.bus_id);
2108                 return;
2109         }
2110
2111         irq_ptr = cdev->private->qdio_data;
2112         if (!irq_ptr) {
2113                 QDIO_DBF_TEXT2(1, trace, "uint");
2114                 sprintf(dbf_text,"%s", cdev->dev.bus_id);
2115                 QDIO_DBF_TEXT2(1,trace,dbf_text);
2116                 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
2117                                cdev->dev.bus_id);
2118                 return;
2119         }
2120
2121         if (IS_ERR(irb)) {
2122                 /* Currently running i/o is in error. */
2123                 switch (PTR_ERR(irb)) {
2124                 case -EIO:
2125                         QDIO_PRINT_ERR("i/o error on device %s\n",
2126                                        cdev->dev.bus_id);
2127                         return;
2128                 case -ETIMEDOUT:
2129                         qdio_timeout_handler(cdev);
2130                         return;
2131                 default:
2132                         QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
2133                                        PTR_ERR(irb), cdev->dev.bus_id);
2134                         return;
2135                 }
2136         }
2137
2138         qdio_irq_check_sense(irq_ptr->schid, irb);
2139
2140 #ifdef CONFIG_QDIO_DEBUG
2141         sprintf(dbf_text, "state:%d", irq_ptr->state);
2142         QDIO_DBF_TEXT4(0, trace, dbf_text);
2143 #endif /* CONFIG_QDIO_DEBUG */
2144
2145         cstat = irb->scsw.cstat;
2146         dstat = irb->scsw.dstat;
2147
2148         switch (irq_ptr->state) {
2149         case QDIO_IRQ_STATE_INACTIVE:
2150                 qdio_establish_handle_irq(cdev, cstat, dstat);
2151                 break;
2152
2153         case QDIO_IRQ_STATE_CLEANUP:
2154                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2155                 break;
2156
2157         case QDIO_IRQ_STATE_ESTABLISHED:
2158         case QDIO_IRQ_STATE_ACTIVE:
2159                 if (cstat & SCHN_STAT_PCI) {
2160                         qdio_handle_pci(irq_ptr);
2161                         break;
2162                 }
2163
2164                 if ((cstat&~SCHN_STAT_PCI)||dstat) {
2165                         qdio_handle_activate_check(cdev, intparm, cstat, dstat);
2166                         break;
2167                 }
2168         default:
2169                 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
2170                                "device %s?!\n",
2171                                irq_ptr->state, cdev->dev.bus_id);
2172         }
2173         wake_up(&cdev->private->wait_q);
2174
2175 }
2176
2177 int
2178 qdio_synchronize(struct ccw_device *cdev, unsigned int flags,
2179                  unsigned int queue_number)
2180 {
2181         int cc = 0;
2182         struct qdio_q *q;
2183         struct qdio_irq *irq_ptr;
2184         void *ptr;
2185 #ifdef CONFIG_QDIO_DEBUG
2186         char dbf_text[15]="SyncXXXX";
2187 #endif
2188
2189         irq_ptr = cdev->private->qdio_data;
2190         if (!irq_ptr)
2191                 return -ENODEV;
2192
2193 #ifdef CONFIG_QDIO_DEBUG
2194         *((int*)(&dbf_text[4])) = irq_ptr->schid.sch_no;
2195         QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2196         *((int*)(&dbf_text[0]))=flags;
2197         *((int*)(&dbf_text[4]))=queue_number;
2198         QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
2199 #endif /* CONFIG_QDIO_DEBUG */
2200
2201         if (flags&QDIO_FLAG_SYNC_INPUT) {
2202                 q=irq_ptr->input_qs[queue_number];
2203                 if (!q)
2204                         return -EINVAL;
2205                 if (!(irq_ptr->is_qebsm))
2206                         cc = do_siga_sync(q->schid, 0, q->mask);
2207         } else if (flags&QDIO_FLAG_SYNC_OUTPUT) {
2208                 q=irq_ptr->output_qs[queue_number];
2209                 if (!q)
2210                         return -EINVAL;
2211                 if (!(irq_ptr->is_qebsm))
2212                         cc = do_siga_sync(q->schid, q->mask, 0);
2213         } else
2214                 return -EINVAL;
2215
2216         ptr=&cc;
2217         if (cc)
2218                 QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int));
2219
2220         return cc;
2221 }
2222
2223 static void
2224 qdio_check_subchannel_qebsm(struct qdio_irq *irq_ptr, unsigned char qdioac,
2225                             unsigned long token)
2226 {
2227         struct qdio_q *q;
2228         int i;
2229         unsigned int count, start_buf;
2230         char dbf_text[15];
2231
2232         /*check if QEBSM is disabled */
2233         if (!(irq_ptr->is_qebsm) || !(qdioac & 0x01)) {
2234                 irq_ptr->is_qebsm  = 0;
2235                 irq_ptr->sch_token = 0;
2236                 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2237                 QDIO_DBF_TEXT0(0,setup,"noV=V");
2238                 return;
2239         }
2240         irq_ptr->sch_token = token;
2241         /*input queue*/
2242         for (i = 0; i < irq_ptr->no_input_qs;i++) {
2243                 q = irq_ptr->input_qs[i];
2244                 count = QDIO_MAX_BUFFERS_PER_Q;
2245                 start_buf = 0;
2246                 set_slsb(q, &start_buf, SLSB_P_INPUT_NOT_INIT, &count);
2247         }
2248         sprintf(dbf_text,"V=V:%2x",irq_ptr->is_qebsm);
2249         QDIO_DBF_TEXT0(0,setup,dbf_text);
2250         sprintf(dbf_text,"%8lx",irq_ptr->sch_token);
2251         QDIO_DBF_TEXT0(0,setup,dbf_text);
2252         /*output queue*/
2253         for (i = 0; i < irq_ptr->no_output_qs; i++) {
2254                 q = irq_ptr->output_qs[i];
2255                 count = QDIO_MAX_BUFFERS_PER_Q;
2256                 start_buf = 0;
2257                 set_slsb(q, &start_buf, SLSB_P_OUTPUT_NOT_INIT, &count);
2258         }
2259 }
2260
2261 static void
2262 qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
2263 {
2264         int result;
2265         unsigned char qdioac;
2266         struct {
2267                 struct chsc_header request;
2268                 u16 reserved1:10;
2269                 u16 ssid:2;
2270                 u16 fmt:4;
2271                 u16 first_sch;
2272                 u16 reserved2;
2273                 u16 last_sch;
2274                 u32 reserved3;
2275                 struct chsc_header response;
2276                 u32 reserved4;
2277                 u8  flags;
2278                 u8  reserved5;
2279                 u16 sch;
2280                 u8  qfmt;
2281                 u8  parm;
2282                 u8  qdioac1;
2283                 u8  sch_class;
2284                 u8  reserved7;
2285                 u8  icnt;
2286                 u8  reserved8;
2287                 u8  ocnt;
2288                 u8 reserved9;
2289                 u8 mbccnt;
2290                 u16 qdioac2;
2291                 u64 sch_token;
2292         } *ssqd_area;
2293
2294         QDIO_DBF_TEXT0(0,setup,"getssqd");
2295         qdioac = 0;
2296         ssqd_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2297         if (!ssqd_area) {
2298                 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
2299                                 "SIGAs for sch x%x.\n", irq_ptr->schid.sch_no);
2300                 irq_ptr->qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2301                                   CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2302                                   CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2303                 irq_ptr->is_qebsm = 0;
2304                 irq_ptr->sch_token = 0;
2305                 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
2306                 return;
2307         }
2308
2309         ssqd_area->request = (struct chsc_header) {
2310                 .length = 0x0010,
2311                 .code   = 0x0024,
2312         };
2313         ssqd_area->first_sch = irq_ptr->schid.sch_no;
2314         ssqd_area->last_sch = irq_ptr->schid.sch_no;
2315         ssqd_area->ssid = irq_ptr->schid.ssid;
2316         result = chsc(ssqd_area);
2317
2318         if (result) {
2319                 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
2320                                 "SIGAs for sch 0.%x.%x.\n", result,
2321                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2322                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2323                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2324                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2325                 irq_ptr->is_qebsm  = 0;
2326                 goto out;
2327         }
2328
2329         if (ssqd_area->response.code != QDIO_CHSC_RESPONSE_CODE_OK) {
2330                 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2331                                 "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n",
2332                                 ssqd_area->response.code,
2333                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2334                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2335                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2336                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2337                 irq_ptr->is_qebsm  = 0;
2338                 goto out;
2339         }
2340         if (!(ssqd_area->flags & CHSC_FLAG_QDIO_CAPABILITY) ||
2341             !(ssqd_area->flags & CHSC_FLAG_VALIDITY) ||
2342             (ssqd_area->sch != irq_ptr->schid.sch_no)) {
2343                 QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \
2344                                 "using all SIGAs.\n",
2345                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2346                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2347                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2348                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* worst case */
2349                 irq_ptr->is_qebsm  = 0;
2350                 goto out;
2351         }
2352         qdioac = ssqd_area->qdioac1;
2353 out:
2354         qdio_check_subchannel_qebsm(irq_ptr, qdioac,
2355                                     ssqd_area->sch_token);
2356         mempool_free(ssqd_area, qdio_mempool_scssc);
2357         irq_ptr->qdioac = qdioac;
2358 }
2359
2360 static unsigned int
2361 tiqdio_check_chsc_availability(void)
2362 {
2363         char dbf_text[15];
2364
2365         if (!css_characteristics_avail)
2366                 return -EIO;
2367
2368         /* Check for bit 41. */
2369         if (!css_general_characteristics.aif) {
2370                 QDIO_PRINT_WARN("Adapter interruption facility not " \
2371                                 "installed.\n");
2372                 return -ENOENT;
2373         }
2374
2375         /* Check for bits 107 and 108. */
2376         if (!css_chsc_characteristics.scssc ||
2377             !css_chsc_characteristics.scsscf) {
2378                 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2379                                 "not available.\n");
2380                 return -ENOENT;
2381         }
2382
2383         /* Check for OSA/FCP thin interrupts (bit 67). */
2384         hydra_thinints = css_general_characteristics.aif_osa;
2385         sprintf(dbf_text,"hydrati%1x", hydra_thinints);
2386         QDIO_DBF_TEXT0(0,setup,dbf_text);
2387
2388 #ifdef CONFIG_64BIT
2389         /* Check for QEBSM support in general (bit 58). */
2390         is_passthrough = css_general_characteristics.qebsm;
2391 #endif
2392         sprintf(dbf_text,"cssQBS:%1x", is_passthrough);
2393         QDIO_DBF_TEXT0(0,setup,dbf_text);
2394
2395         /* Check for aif time delay disablement fac (bit 56). If installed,
2396          * omit svs even under lpar (good point by rick again) */
2397         omit_svs = css_general_characteristics.aif_tdd;
2398         sprintf(dbf_text,"omitsvs%1x", omit_svs);
2399         QDIO_DBF_TEXT0(0,setup,dbf_text);
2400         return 0;
2401 }
2402
2403
2404 static unsigned int
2405 tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2406 {
2407         unsigned long real_addr_local_summary_bit;
2408         unsigned long real_addr_dev_st_chg_ind;
2409         void *ptr;
2410         char dbf_text[15];
2411
2412         unsigned int resp_code;
2413         int result;
2414
2415         struct {
2416                 struct chsc_header request;
2417                 u16 operation_code;
2418                 u16 reserved1;
2419                 u32 reserved2;
2420                 u32 reserved3;
2421                 u64 summary_indicator_addr;
2422                 u64 subchannel_indicator_addr;
2423                 u32 ks:4;
2424                 u32 kc:4;
2425                 u32 reserved4:21;
2426                 u32 isc:3;
2427                 u32 word_with_d_bit;
2428                 /* set to 0x10000000 to enable
2429                  * time delay disablement facility */
2430                 u32 reserved5;
2431                 struct subchannel_id schid;
2432                 u32 reserved6[1004];
2433                 struct chsc_header response;
2434                 u32 reserved7;
2435         } *scssc_area;
2436
2437         if (!irq_ptr->is_thinint_irq)
2438                 return -ENODEV;
2439
2440         if (reset_to_zero) {
2441                 real_addr_local_summary_bit=0;
2442                 real_addr_dev_st_chg_ind=0;
2443         } else {
2444                 real_addr_local_summary_bit=
2445                         virt_to_phys((volatile void *)tiqdio_ind);
2446                 real_addr_dev_st_chg_ind=
2447                         virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
2448         }
2449
2450         scssc_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2451         if (!scssc_area) {
2452                 QDIO_PRINT_WARN("No memory for setting indicators on " \
2453                                 "subchannel 0.%x.%x.\n",
2454                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2455                 return -ENOMEM;
2456         }
2457         scssc_area->request = (struct chsc_header) {
2458                 .length = 0x0fe0,
2459                 .code   = 0x0021,
2460         };
2461         scssc_area->operation_code = 0;
2462
2463         scssc_area->summary_indicator_addr = real_addr_local_summary_bit;
2464         scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind;
2465         scssc_area->ks = QDIO_STORAGE_KEY;
2466         scssc_area->kc = QDIO_STORAGE_KEY;
2467         scssc_area->isc = TIQDIO_THININT_ISC;
2468         scssc_area->schid = irq_ptr->schid;
2469         /* enables the time delay disablement facility. Don't care
2470          * whether it is really there (i.e. we haven't checked for
2471          * it) */
2472         if (css_general_characteristics.aif_tdd)
2473                 scssc_area->word_with_d_bit = 0x10000000;
2474         else
2475                 QDIO_PRINT_WARN("Time delay disablement facility " \
2476                                 "not available\n");
2477
2478         result = chsc(scssc_area);
2479         if (result) {
2480                 QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \
2481                                 "cc=%i.\n",
2482                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,result);
2483                 result = -EIO;
2484                 goto out;
2485         }
2486
2487         resp_code = scssc_area->response.code;
2488         if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2489                 QDIO_PRINT_WARN("response upon setting indicators " \
2490                                 "is 0x%x.\n",resp_code);
2491                 sprintf(dbf_text,"sidR%4x",resp_code);
2492                 QDIO_DBF_TEXT1(0,trace,dbf_text);
2493                 QDIO_DBF_TEXT1(0,setup,dbf_text);
2494                 ptr=&scssc_area->response;
2495                 QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN);
2496                 result = -EIO;
2497                 goto out;
2498         }
2499
2500         QDIO_DBF_TEXT2(0,setup,"setscind");
2501         QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit,
2502                       sizeof(unsigned long));
2503         QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
2504         result = 0;
2505 out:
2506         mempool_free(scssc_area, qdio_mempool_scssc);
2507         return result;
2508
2509 }
2510
2511 static unsigned int
2512 tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2513 {
2514         unsigned int resp_code;
2515         int result;
2516         void *ptr;
2517         char dbf_text[15];
2518
2519         struct {
2520                 struct chsc_header request;
2521                 u16 operation_code;
2522                 u16 reserved1;
2523                 u32 reserved2;
2524                 u32 reserved3;
2525                 u32 reserved4[2];
2526                 u32 delay_target;
2527                 u32 reserved5[1009];
2528                 struct chsc_header response;
2529                 u32 reserved6;
2530         } *scsscf_area;
2531
2532         if (!irq_ptr->is_thinint_irq)
2533                 return -ENODEV;
2534
2535         scsscf_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
2536         if (!scsscf_area) {
2537                 QDIO_PRINT_WARN("No memory for setting delay target on " \
2538                                 "subchannel 0.%x.%x.\n",
2539                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
2540                 return -ENOMEM;
2541         }
2542         scsscf_area->request = (struct chsc_header) {
2543                 .length = 0x0fe0,
2544                 .code   = 0x1027,
2545         };
2546
2547         scsscf_area->delay_target = delay_target<<16;
2548
2549         result=chsc(scsscf_area);
2550         if (result) {
2551                 QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \
2552                                 "cc=%i. Continuing.\n",
2553                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2554                                 result);
2555                 result = -EIO;
2556                 goto out;
2557         }
2558
2559         resp_code = scsscf_area->response.code;
2560         if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2561                 QDIO_PRINT_WARN("response upon setting delay target " \
2562                                 "is 0x%x. Continuing.\n",resp_code);
2563                 sprintf(dbf_text,"sdtR%4x",resp_code);
2564                 QDIO_DBF_TEXT1(0,trace,dbf_text);
2565                 QDIO_DBF_TEXT1(0,setup,dbf_text);
2566                 ptr=&scsscf_area->response;
2567                 QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN);
2568         }
2569         QDIO_DBF_TEXT2(0,trace,"delytrgt");
2570         QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
2571         result = 0; /* not critical */
2572 out:
2573         mempool_free(scsscf_area, qdio_mempool_scssc);
2574         return result;
2575 }
2576
2577 int
2578 qdio_cleanup(struct ccw_device *cdev, int how)
2579 {
2580         struct qdio_irq *irq_ptr;
2581         char dbf_text[15];
2582         int rc;
2583
2584         irq_ptr = cdev->private->qdio_data;
2585         if (!irq_ptr)
2586                 return -ENODEV;
2587
2588         sprintf(dbf_text,"qcln%4x",irq_ptr->schid.sch_no);
2589         QDIO_DBF_TEXT1(0,trace,dbf_text);
2590         QDIO_DBF_TEXT0(0,setup,dbf_text);
2591
2592         rc = qdio_shutdown(cdev, how);
2593         if ((rc == 0) || (rc == -EINPROGRESS))
2594                 rc = qdio_free(cdev);
2595         return rc;
2596 }
2597
2598 int
2599 qdio_shutdown(struct ccw_device *cdev, int how)
2600 {
2601         struct qdio_irq *irq_ptr;
2602         int i;
2603         int result = 0;
2604         int rc;
2605         unsigned long flags;
2606         int timeout;
2607         char dbf_text[15];
2608
2609         irq_ptr = cdev->private->qdio_data;
2610         if (!irq_ptr)
2611                 return -ENODEV;
2612
2613         down(&irq_ptr->setting_up_sema);
2614
2615         sprintf(dbf_text,"qsqs%4x",irq_ptr->schid.sch_no);
2616         QDIO_DBF_TEXT1(0,trace,dbf_text);
2617         QDIO_DBF_TEXT0(0,setup,dbf_text);
2618
2619         /* mark all qs as uninteresting */
2620         for (i=0;i<irq_ptr->no_input_qs;i++)
2621                 atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1);
2622
2623         for (i=0;i<irq_ptr->no_output_qs;i++)
2624                 atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1);
2625
2626         tasklet_kill(&tiqdio_tasklet);
2627
2628         for (i=0;i<irq_ptr->no_input_qs;i++) {
2629                 qdio_unmark_q(irq_ptr->input_qs[i]);
2630                 tasklet_kill(&irq_ptr->input_qs[i]->tasklet);
2631                 wait_event_interruptible_timeout(cdev->private->wait_q,
2632                                                  !atomic_read(&irq_ptr->
2633                                                               input_qs[i]->
2634                                                               use_count),
2635                                                  QDIO_NO_USE_COUNT_TIMEOUT);
2636                 if (atomic_read(&irq_ptr->input_qs[i]->use_count))
2637                         result=-EINPROGRESS;
2638         }
2639
2640         for (i=0;i<irq_ptr->no_output_qs;i++) {
2641                 tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
2642                 del_timer(&irq_ptr->output_qs[i]->timer);
2643                 wait_event_interruptible_timeout(cdev->private->wait_q,
2644                                                  !atomic_read(&irq_ptr->
2645                                                               output_qs[i]->
2646                                                               use_count),
2647                                                  QDIO_NO_USE_COUNT_TIMEOUT);
2648                 if (atomic_read(&irq_ptr->output_qs[i]->use_count))
2649                         result=-EINPROGRESS;
2650         }
2651
2652         /* cleanup subchannel */
2653         spin_lock_irqsave(get_ccwdev_lock(cdev),flags);
2654         if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) {
2655                 rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
2656                 timeout=QDIO_CLEANUP_CLEAR_TIMEOUT;
2657         } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) {
2658                 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2659                 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2660         } else { /* default behaviour */
2661                 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2662                 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2663         }
2664         if (rc == -ENODEV) {
2665                 /* No need to wait for device no longer present. */
2666                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2667                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2668         } else if (((void *)cdev->handler != (void *)qdio_handler) && rc == 0) {
2669                 /*
2670                  * Whoever put another handler there, has to cope with the
2671                  * interrupt theirself. Might happen if qdio_shutdown was
2672                  * called on already shutdown queues, but this shouldn't have
2673                  * bad side effects.
2674                  */
2675                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2676                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2677         } else if (rc == 0) {
2678                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
2679                 ccw_device_set_timeout(cdev, timeout);
2680                 spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags);
2681
2682                 wait_event(cdev->private->wait_q,
2683                            irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
2684                            irq_ptr->state == QDIO_IRQ_STATE_ERR);
2685         } else {
2686                 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2687                                 "device %s\n", result, cdev->dev.bus_id);
2688                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2689                 result = rc;
2690                 goto out;
2691         }
2692         if (irq_ptr->is_thinint_irq) {
2693                 qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind);
2694                 tiqdio_set_subchannel_ind(irq_ptr,1);
2695                 /* reset adapter interrupt indicators */
2696         }
2697
2698         /* exchange int handlers, if necessary */
2699         if ((void*)cdev->handler == (void*)qdio_handler)
2700                 cdev->handler=irq_ptr->original_int_handler;
2701
2702         /* Ignore errors. */
2703         qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2704         ccw_device_set_timeout(cdev, 0);
2705 out:
2706         up(&irq_ptr->setting_up_sema);
2707         return result;
2708 }
2709
2710 int
2711 qdio_free(struct ccw_device *cdev)
2712 {
2713         struct qdio_irq *irq_ptr;
2714         char dbf_text[15];
2715
2716         irq_ptr = cdev->private->qdio_data;
2717         if (!irq_ptr)
2718                 return -ENODEV;
2719
2720         down(&irq_ptr->setting_up_sema);
2721
2722         sprintf(dbf_text,"qfqs%4x",irq_ptr->schid.sch_no);
2723         QDIO_DBF_TEXT1(0,trace,dbf_text);
2724         QDIO_DBF_TEXT0(0,setup,dbf_text);
2725
2726         cdev->private->qdio_data = NULL;
2727
2728         up(&irq_ptr->setting_up_sema);
2729
2730         qdio_release_irq_memory(irq_ptr);
2731         module_put(THIS_MODULE);
2732         return 0;
2733 }
2734
2735 static void
2736 qdio_allocate_do_dbf(struct qdio_initialize *init_data)
2737 {
2738         char dbf_text[20]; /* if a printf printed out more than 8 chars */
2739
2740         sprintf(dbf_text,"qfmt:%x",init_data->q_format);
2741         QDIO_DBF_TEXT0(0,setup,dbf_text);
2742         QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8);
2743         sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format);
2744         QDIO_DBF_TEXT0(0,setup,dbf_text);
2745         QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*));
2746         QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*));
2747         QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*));
2748         sprintf(dbf_text,"miit%4x",init_data->min_input_threshold);
2749         QDIO_DBF_TEXT0(0,setup,dbf_text);
2750         sprintf(dbf_text,"mait%4x",init_data->max_input_threshold);
2751         QDIO_DBF_TEXT0(0,setup,dbf_text);
2752         sprintf(dbf_text,"miot%4x",init_data->min_output_threshold);
2753         QDIO_DBF_TEXT0(0,setup,dbf_text);
2754         sprintf(dbf_text,"maot%4x",init_data->max_output_threshold);
2755         QDIO_DBF_TEXT0(0,setup,dbf_text);
2756         sprintf(dbf_text,"niq:%4x",init_data->no_input_qs);
2757         QDIO_DBF_TEXT0(0,setup,dbf_text);
2758         sprintf(dbf_text,"noq:%4x",init_data->no_output_qs);
2759         QDIO_DBF_TEXT0(0,setup,dbf_text);
2760         QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*));
2761         QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*));
2762         QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long));
2763         QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long));
2764         QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*));
2765         QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*));
2766 }
2767
2768 static void
2769 qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt)
2770 {
2771         irq_ptr->input_qs[i]->is_iqdio_q = iqfmt;
2772         irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2773
2774         irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib);
2775
2776         irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl);
2777
2778         irq_ptr->qdr->qdf0[i].slsba=
2779                 (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]);
2780
2781         irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY;
2782         irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY;
2783         irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY;
2784         irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY;
2785 }
2786
2787 static void
2788 qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i,
2789                                int j, int iqfmt)
2790 {
2791         irq_ptr->output_qs[i]->is_iqdio_q = iqfmt;
2792         irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2793
2794         irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib);
2795
2796         irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl);
2797
2798         irq_ptr->qdr->qdf0[i+j].slsba=
2799                 (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]);
2800
2801         irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY;
2802         irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY;
2803         irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY;
2804         irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY;
2805 }
2806
2807
2808 static void
2809 qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr)
2810 {
2811         int i;
2812
2813         for (i=0;i<irq_ptr->no_input_qs;i++) {
2814                 irq_ptr->input_qs[i]->siga_sync=
2815                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2816                 irq_ptr->input_qs[i]->siga_in=
2817                         irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2818                 irq_ptr->input_qs[i]->siga_out=
2819                         irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2820                 irq_ptr->input_qs[i]->siga_sync_done_on_thinints=
2821                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2822                 irq_ptr->input_qs[i]->hydra_gives_outbound_pcis=
2823                         irq_ptr->hydra_gives_outbound_pcis;
2824                 irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis=
2825                         ((irq_ptr->qdioac&
2826                           (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2827                            CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2828                          (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2829                           CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2830
2831         }
2832 }
2833
2834 static void
2835 qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr)
2836 {
2837         int i;
2838
2839         for (i=0;i<irq_ptr->no_output_qs;i++) {
2840                 irq_ptr->output_qs[i]->siga_sync=
2841                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2842                 irq_ptr->output_qs[i]->siga_in=
2843                         irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2844                 irq_ptr->output_qs[i]->siga_out=
2845                         irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2846                 irq_ptr->output_qs[i]->siga_sync_done_on_thinints=
2847                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2848                 irq_ptr->output_qs[i]->hydra_gives_outbound_pcis=
2849                         irq_ptr->hydra_gives_outbound_pcis;
2850                 irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis=
2851                         ((irq_ptr->qdioac&
2852                           (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2853                            CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2854                          (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2855                           CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2856
2857         }
2858 }
2859
2860 static int
2861 qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat,
2862                                     int dstat)
2863 {
2864         char dbf_text[15];
2865         struct qdio_irq *irq_ptr;
2866
2867         irq_ptr = cdev->private->qdio_data;
2868
2869         if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) {
2870                 sprintf(dbf_text,"ick1%4x",irq_ptr->schid.sch_no);
2871                 QDIO_DBF_TEXT2(1,trace,dbf_text);
2872                 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2873                 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2874                 QDIO_PRINT_ERR("received check condition on establish " \
2875                                "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n",
2876                                irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2877                                cstat,dstat);
2878                 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR);
2879         }
2880
2881         if (!(dstat & DEV_STAT_DEV_END)) {
2882                 QDIO_DBF_TEXT2(1,setup,"eq:no de");
2883                 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2884                 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2885                 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get "
2886                                "device end: dstat=%02x, cstat=%02x\n",
2887                                irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
2888                                dstat, cstat);
2889                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2890                 return 1;
2891         }
2892
2893         if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) {
2894                 QDIO_DBF_TEXT2(1,setup,"eq:badio");
2895                 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2896                 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2897                 QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got "
2898                                "the following devstat: dstat=%02x, "
2899                                "cstat=%02x\n", irq_ptr->schid.ssid,
2900                                irq_ptr->schid.sch_no, dstat, cstat);
2901                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2902                 return 1;
2903         }
2904         return 0;
2905 }
2906
2907 static void
2908 qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat)
2909 {
2910         struct qdio_irq *irq_ptr;
2911         char dbf_text[15];
2912
2913         irq_ptr = cdev->private->qdio_data;
2914
2915         sprintf(dbf_text,"qehi%4x",cdev->private->schid.sch_no);
2916         QDIO_DBF_TEXT0(0,setup,dbf_text);
2917         QDIO_DBF_TEXT0(0,trace,dbf_text);
2918
2919         if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat)) {
2920                 ccw_device_set_timeout(cdev, 0);
2921                 return;
2922         }
2923
2924         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED);
2925         ccw_device_set_timeout(cdev, 0);
2926 }
2927
2928 int
2929 qdio_initialize(struct qdio_initialize *init_data)
2930 {
2931         int rc;
2932         char dbf_text[15];
2933
2934         sprintf(dbf_text,"qini%4x",init_data->cdev->private->schid.sch_no);
2935         QDIO_DBF_TEXT0(0,setup,dbf_text);
2936         QDIO_DBF_TEXT0(0,trace,dbf_text);
2937
2938         rc = qdio_allocate(init_data);
2939         if (rc == 0) {
2940                 rc = qdio_establish(init_data);
2941                 if (rc != 0)
2942                         qdio_free(init_data->cdev);
2943         }
2944
2945         return rc;
2946 }
2947
2948
2949 int
2950 qdio_allocate(struct qdio_initialize *init_data)
2951 {
2952         struct qdio_irq *irq_ptr;
2953         char dbf_text[15];
2954
2955         sprintf(dbf_text,"qalc%4x",init_data->cdev->private->schid.sch_no);
2956         QDIO_DBF_TEXT0(0,setup,dbf_text);
2957         QDIO_DBF_TEXT0(0,trace,dbf_text);
2958         if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2959              (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2960              ((init_data->no_input_qs) && (!init_data->input_handler)) ||
2961              ((init_data->no_output_qs) && (!init_data->output_handler)) )
2962                 return -EINVAL;
2963
2964         if (!init_data->input_sbal_addr_array)
2965                 return -EINVAL;
2966
2967         if (!init_data->output_sbal_addr_array)
2968                 return -EINVAL;
2969
2970         qdio_allocate_do_dbf(init_data);
2971
2972         /* create irq */
2973         irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
2974
2975         QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
2976         QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
2977
2978         if (!irq_ptr) {
2979                 QDIO_PRINT_ERR("allocation of irq_ptr failed!\n");
2980                 return -ENOMEM;
2981         }
2982
2983         init_MUTEX(&irq_ptr->setting_up_sema);
2984
2985         /* QDR must be in DMA area since CCW data address is only 32 bit */
2986         irq_ptr->qdr = (struct qdr *) __get_free_page(GFP_KERNEL | GFP_DMA);
2987         if (!(irq_ptr->qdr)) {
2988                 free_page((unsigned long) irq_ptr);
2989                 QDIO_PRINT_ERR("allocation of irq_ptr->qdr failed!\n");
2990                 return -ENOMEM;
2991         }
2992         QDIO_DBF_TEXT0(0,setup,"qdr:");
2993         QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*));
2994
2995         if (qdio_alloc_qs(irq_ptr,
2996                           init_data->no_input_qs,
2997                           init_data->no_output_qs)) {
2998                 QDIO_PRINT_ERR("queue allocation failed!\n");
2999                 qdio_release_irq_memory(irq_ptr);
3000                 return -ENOMEM;
3001         }
3002
3003         init_data->cdev->private->qdio_data = irq_ptr;
3004
3005         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE);
3006
3007         return 0;
3008 }
3009
3010 static int qdio_fill_irq(struct qdio_initialize *init_data)
3011 {
3012         int i;
3013         char dbf_text[15];
3014         struct ciw *ciw;
3015         int is_iqdio;
3016         struct qdio_irq *irq_ptr;
3017
3018         irq_ptr = init_data->cdev->private->qdio_data;
3019
3020         memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr));
3021
3022         /* wipes qib.ac, required by ar7063 */
3023         memset(irq_ptr->qdr,0,sizeof(struct qdr));
3024
3025         irq_ptr->int_parm=init_data->int_parm;
3026
3027         irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
3028         irq_ptr->no_input_qs=init_data->no_input_qs;
3029         irq_ptr->no_output_qs=init_data->no_output_qs;
3030
3031         if (init_data->q_format==QDIO_IQDIO_QFMT) {
3032                 irq_ptr->is_iqdio_irq=1;
3033                 irq_ptr->is_thinint_irq=1;
3034         } else {
3035                 irq_ptr->is_iqdio_irq=0;
3036                 irq_ptr->is_thinint_irq=hydra_thinints;
3037         }
3038         sprintf(dbf_text,"is_i_t%1x%1x",
3039                 irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq);
3040         QDIO_DBF_TEXT2(0,setup,dbf_text);
3041
3042         if (irq_ptr->is_thinint_irq) {
3043                 irq_ptr->dev_st_chg_ind = qdio_get_indicator();
3044                 QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*));
3045                 if (!irq_ptr->dev_st_chg_ind) {
3046                         QDIO_PRINT_WARN("no indicator location available " \
3047                                         "for irq 0.%x.%x\n",
3048                                         irq_ptr->schid.ssid, irq_ptr->schid.sch_no);
3049                         qdio_release_irq_memory(irq_ptr);
3050                         return -ENOBUFS;
3051                 }
3052         }
3053
3054         /* defaults */
3055         irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD;
3056         irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT;
3057         irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD;
3058         irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT;
3059
3060         qdio_fill_qs(irq_ptr, init_data->cdev,
3061                      init_data->no_input_qs,
3062                      init_data->no_output_qs,
3063                      init_data->input_handler,
3064                      init_data->output_handler,init_data->int_parm,
3065                      init_data->q_format,init_data->flags,
3066                      init_data->input_sbal_addr_array,
3067                      init_data->output_sbal_addr_array);
3068
3069         if (!try_module_get(THIS_MODULE)) {
3070                 QDIO_PRINT_CRIT("try_module_get() failed!\n");
3071                 qdio_release_irq_memory(irq_ptr);
3072                 return -EINVAL;
3073         }
3074
3075         qdio_fill_thresholds(irq_ptr,init_data->no_input_qs,
3076                              init_data->no_output_qs,
3077                              init_data->min_input_threshold,
3078                              init_data->max_input_threshold,
3079                              init_data->min_output_threshold,
3080                              init_data->max_output_threshold);
3081
3082         /* fill in qdr */
3083         irq_ptr->qdr->qfmt=init_data->q_format;
3084         irq_ptr->qdr->iqdcnt=init_data->no_input_qs;
3085         irq_ptr->qdr->oqdcnt=init_data->no_output_qs;
3086         irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */
3087         irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4;
3088
3089         irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib;
3090         irq_ptr->qdr->qkey=QDIO_STORAGE_KEY;
3091
3092         /* fill in qib */
3093         irq_ptr->is_qebsm = is_passthrough;
3094         if (irq_ptr->is_qebsm)
3095                 irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
3096
3097         irq_ptr->qib.qfmt=init_data->q_format;
3098         if (init_data->no_input_qs)
3099                 irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib);
3100         if (init_data->no_output_qs)
3101                 irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib);
3102         memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8);
3103
3104         qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format,
3105                              init_data->qib_param_field,
3106                              init_data->no_input_qs,
3107                              init_data->no_output_qs,
3108                              init_data->input_slib_elements,
3109                              init_data->output_slib_elements);
3110
3111         /* first input descriptors, then output descriptors */
3112         is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0;
3113         for (i=0;i<init_data->no_input_qs;i++)
3114                 qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio);
3115
3116         for (i=0;i<init_data->no_output_qs;i++)
3117                 qdio_allocate_fill_output_desc(irq_ptr, i,
3118                                                init_data->no_input_qs,
3119                                                is_iqdio);
3120
3121         /* qdr, qib, sls, slsbs, slibs, sbales filled. */
3122
3123         /* get qdio commands */
3124         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
3125         if (!ciw) {
3126                 QDIO_DBF_TEXT2(1,setup,"no eq");
3127                 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
3128                                 "Trying to use default.\n");
3129         } else
3130                 irq_ptr->equeue = *ciw;
3131         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
3132         if (!ciw) {
3133                 QDIO_DBF_TEXT2(1,setup,"no aq");
3134                 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
3135                                 "Trying to use default.\n");
3136         } else
3137                 irq_ptr->aqueue = *ciw;
3138
3139         /* Set new interrupt handler. */
3140         irq_ptr->original_int_handler = init_data->cdev->handler;
3141         init_data->cdev->handler = qdio_handler;
3142
3143         return 0;
3144 }
3145
3146 int
3147 qdio_establish(struct qdio_initialize *init_data)
3148 {
3149         struct qdio_irq *irq_ptr;
3150         unsigned long saveflags;
3151         int result, result2;
3152         struct ccw_device *cdev;
3153         char dbf_text[20];
3154
3155         cdev=init_data->cdev;
3156         irq_ptr = cdev->private->qdio_data;
3157         if (!irq_ptr)
3158                 return -EINVAL;
3159
3160         if (cdev->private->state != DEV_STATE_ONLINE)
3161                 return -EINVAL;
3162
3163         down(&irq_ptr->setting_up_sema);
3164
3165         qdio_fill_irq(init_data);
3166
3167         /* the thinint CHSC stuff */
3168         if (irq_ptr->is_thinint_irq) {
3169
3170                 result = tiqdio_set_subchannel_ind(irq_ptr,0);
3171                 if (result) {
3172                         up(&irq_ptr->setting_up_sema);
3173                         qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3174                         return result;
3175                 }
3176                 tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET);
3177         }
3178
3179         sprintf(dbf_text,"qest%4x",cdev->private->schid.sch_no);
3180         QDIO_DBF_TEXT0(0,setup,dbf_text);
3181         QDIO_DBF_TEXT0(0,trace,dbf_text);
3182
3183         /* establish q */
3184         irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd;
3185         irq_ptr->ccw.flags=CCW_FLAG_SLI;
3186         irq_ptr->ccw.count=irq_ptr->equeue.count;
3187         irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr);
3188
3189         spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3190
3191         ccw_device_set_options_mask(cdev, 0);
3192         result=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3193                                         QDIO_DOING_ESTABLISH,0, 0,
3194                                         QDIO_ESTABLISH_TIMEOUT);
3195         if (result) {
3196                 result2=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
3197                                                  QDIO_DOING_ESTABLISH,0,0,
3198                                                  QDIO_ESTABLISH_TIMEOUT);
3199                 sprintf(dbf_text,"eq:io%4x",result);
3200                 QDIO_DBF_TEXT2(1,setup,dbf_text);
3201                 if (result2) {
3202                         sprintf(dbf_text,"eq:io%4x",result);
3203                         QDIO_DBF_TEXT2(1,setup,dbf_text);
3204                 }
3205                 QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \
3206                                 "returned %i, next try returned %i\n",
3207                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3208                                 result, result2);
3209                 result=result2;
3210                 if (result)
3211                         ccw_device_set_timeout(cdev, 0);
3212         }
3213
3214         spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3215
3216         if (result) {
3217                 up(&irq_ptr->setting_up_sema);
3218                 qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR);
3219                 return result;
3220         }
3221
3222         /* Timeout is cared for already by using ccw_device_start_timeout(). */
3223         wait_event_interruptible(cdev->private->wait_q,
3224                  irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
3225                  irq_ptr->state == QDIO_IRQ_STATE_ERR);
3226
3227         if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED)
3228                 result = 0;
3229         else {
3230                 up(&irq_ptr->setting_up_sema);
3231                 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3232                 return -EIO;
3233         }
3234
3235         qdio_get_ssqd_information(irq_ptr);
3236         /* if this gets set once, we're running under VM and can omit SVSes */
3237         if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY)
3238                 omit_svs=1;
3239
3240         sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac);
3241         QDIO_DBF_TEXT2(0,setup,dbf_text);
3242
3243         sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac);
3244         QDIO_DBF_TEXT2(0,setup,dbf_text);
3245
3246         irq_ptr->hydra_gives_outbound_pcis=
3247                 irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED;
3248         irq_ptr->sync_done_on_outb_pcis=
3249                 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS;
3250
3251         qdio_initialize_set_siga_flags_input(irq_ptr);
3252         qdio_initialize_set_siga_flags_output(irq_ptr);
3253
3254         up(&irq_ptr->setting_up_sema);
3255
3256         return result;
3257
3258 }
3259
3260 int
3261 qdio_activate(struct ccw_device *cdev, int flags)
3262 {
3263         struct qdio_irq *irq_ptr;
3264         int i,result=0,result2;
3265         unsigned long saveflags;
3266         char dbf_text[20]; /* see qdio_initialize */
3267
3268         irq_ptr = cdev->private->qdio_data;
3269         if (!irq_ptr)
3270                 return -ENODEV;
3271
3272         if (cdev->private->state != DEV_STATE_ONLINE)
3273                 return -EINVAL;
3274
3275         down(&irq_ptr->setting_up_sema);
3276         if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) {
3277                 result=-EBUSY;
3278                 goto out;
3279         }
3280
3281         sprintf(dbf_text,"qact%4x", irq_ptr->schid.sch_no);
3282         QDIO_DBF_TEXT2(0,setup,dbf_text);
3283         QDIO_DBF_TEXT2(0,trace,dbf_text);
3284
3285         /* activate q */
3286         irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd;
3287         irq_ptr->ccw.flags=CCW_FLAG_SLI;
3288         irq_ptr->ccw.count=irq_ptr->aqueue.count;
3289         irq_ptr->ccw.cda=QDIO_GET_ADDR(0);
3290
3291         spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
3292
3293         ccw_device_set_timeout(cdev, 0);
3294         ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
3295         result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE,
3296                                 0, DOIO_DENY_PREFETCH);
3297         if (result) {
3298                 result2=ccw_device_start(cdev,&irq_ptr->ccw,
3299                                          QDIO_DOING_ACTIVATE,0,0);
3300                 sprintf(dbf_text,"aq:io%4x",result);
3301                 QDIO_DBF_TEXT2(1,setup,dbf_text);
3302                 if (result2) {
3303                         sprintf(dbf_text,"aq:io%4x",result);
3304                         QDIO_DBF_TEXT2(1,setup,dbf_text);
3305                 }
3306                 QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \
3307                                 "returned %i, next try returned %i\n",
3308                                 irq_ptr->schid.ssid, irq_ptr->schid.sch_no,
3309                                 result, result2);
3310                 result=result2;
3311         }
3312
3313         spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
3314         if (result)
3315                 goto out;
3316
3317         for (i=0;i<irq_ptr->no_input_qs;i++) {
3318                 if (irq_ptr->is_thinint_irq) {
3319                         /*
3320                          * that way we know, that, if we will get interrupted
3321                          * by tiqdio_inbound_processing, qdio_unmark_q will
3322                          * not be called
3323                          */
3324                         qdio_reserve_q(irq_ptr->input_qs[i]);
3325                         qdio_mark_tiq(irq_ptr->input_qs[i]);
3326                         qdio_release_q(irq_ptr->input_qs[i]);
3327                 }
3328         }
3329
3330         if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) {
3331                 for (i=0;i<irq_ptr->no_input_qs;i++) {
3332                         irq_ptr->input_qs[i]->is_input_q|=
3333                                 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT;
3334                 }
3335         }
3336
3337         wait_event_interruptible_timeout(cdev->private->wait_q,
3338                                          ((irq_ptr->state ==
3339                                           QDIO_IRQ_STATE_STOPPED) ||
3340                                           (irq_ptr->state ==
3341                                            QDIO_IRQ_STATE_ERR)),
3342                                          QDIO_ACTIVATE_TIMEOUT);
3343
3344         switch (irq_ptr->state) {
3345         case QDIO_IRQ_STATE_STOPPED:
3346         case QDIO_IRQ_STATE_ERR:
3347                 up(&irq_ptr->setting_up_sema);
3348                 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3349                 down(&irq_ptr->setting_up_sema);
3350                 result = -EIO;
3351                 break;
3352         default:
3353                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
3354                 result = 0;
3355         }
3356  out:
3357         up(&irq_ptr->setting_up_sema);
3358
3359         return result;
3360 }
3361
3362 /* buffers filled forwards again to make Rick happy */
3363 static void
3364 qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx,
3365                         unsigned int count, struct qdio_buffer *buffers)
3366 {
3367         struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3368         int tmp = 0;
3369
3370         qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3371         if (irq->is_qebsm) {
3372                 while (count) {
3373                         tmp = set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
3374                         if (!tmp)
3375                                 return;
3376                 }
3377                 return;
3378         }
3379         for (;;) {
3380                 set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count);
3381                 count--;
3382                 if (!count) break;
3383                 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
3384         }
3385 }
3386
3387 static void
3388 qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx,
3389                          unsigned int count, struct qdio_buffer *buffers)
3390 {
3391         struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3392         int tmp = 0;
3393
3394         qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1);
3395         if (irq->is_qebsm) {
3396                 while (count) {
3397                         tmp = set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3398                         if (!tmp)
3399                                 return;
3400                 }
3401                 return;
3402         }
3403
3404         for (;;) {
3405                 set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count);
3406                 count--;
3407                 if (!count) break;
3408                 qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1);
3409         }
3410 }
3411
3412 static void
3413 do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags,
3414                        unsigned int qidx, unsigned int count,
3415                        struct qdio_buffer *buffers)
3416 {
3417         int used_elements;
3418
3419         /* This is the inbound handling of queues */
3420         used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3421
3422         qdio_do_qdio_fill_input(q,qidx,count,buffers);
3423
3424         if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&&
3425             (callflags&QDIO_FLAG_UNDER_INTERRUPT))
3426                 atomic_xchg(&q->polling,0);
3427
3428         if (used_elements)
3429                 return;
3430         if (callflags&QDIO_FLAG_DONT_SIGA)
3431                 return;
3432         if (q->siga_in) {
3433                 int result;
3434
3435                 result=qdio_siga_input(q);
3436                 if (result) {
3437                         if (q->siga_error)
3438                                 q->error_status_flags|=
3439                                         QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
3440                         q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
3441                         q->siga_error=result;
3442                 }
3443         }
3444
3445         qdio_mark_q(q);
3446 }
3447
3448 static void
3449 do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
3450                         unsigned int qidx, unsigned int count,
3451                         struct qdio_buffer *buffers)
3452 {
3453         int used_elements;
3454         unsigned int cnt, start_buf;
3455         unsigned char state = 0;
3456         struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
3457
3458         /* This is the outbound handling of queues */
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) {
3464                 qdio_perf_stat_inc(&perf_stats.outbound_cnt);
3465                 return;
3466         }
3467         if (callflags & QDIO_FLAG_PCI_OUT)
3468                 q->is_pci_out = 1;
3469         else
3470                 q->is_pci_out = 0;
3471         if (q->is_iqdio_q) {
3472                 /* one siga for every sbal */
3473                 while (count--)
3474                         qdio_kick_outbound_q(q);
3475
3476                 __qdio_outbound_processing(q);
3477         } else {
3478                 /* under VM, we do a SIGA sync unconditionally */
3479                 SYNC_MEMORY;
3480                 else {
3481                         /*
3482                          * w/o shadow queues (else branch of
3483                          * SYNC_MEMORY :-/ ), we try to
3484                          * fast-requeue buffers
3485                          */
3486                         if (irq->is_qebsm) {
3487                                 cnt = 1;
3488                                 start_buf = ((qidx+QDIO_MAX_BUFFERS_PER_Q-1) &
3489                                              (QDIO_MAX_BUFFERS_PER_Q-1));
3490                                 qdio_do_eqbs(q, &state, &start_buf, &cnt);
3491                         } else
3492                                 state = q->slsb.acc.val[(qidx+QDIO_MAX_BUFFERS_PER_Q-1)
3493                                         &(QDIO_MAX_BUFFERS_PER_Q-1) ];
3494                          if (state != SLSB_CU_OUTPUT_PRIMED) {
3495                                 qdio_kick_outbound_q(q);
3496                         } else {
3497                                 QDIO_DBF_TEXT3(0,trace, "fast-req");
3498                                 qdio_perf_stat_inc(&perf_stats.fast_reqs);
3499                         }
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
3509         qdio_perf_stat_inc(&perf_stats.outbound_cnt);
3510 }
3511
3512 /* count must be 1 in iqdio */
3513 int
3514 do_QDIO(struct ccw_device *cdev,unsigned int callflags,
3515         unsigned int queue_number, unsigned int qidx,
3516         unsigned int count,struct qdio_buffer *buffers)
3517 {
3518         struct qdio_irq *irq_ptr;
3519 #ifdef CONFIG_QDIO_DEBUG
3520         char dbf_text[20];
3521
3522         sprintf(dbf_text,"doQD%04x",cdev->private->schid.sch_no);
3523         QDIO_DBF_TEXT3(0,trace,dbf_text);
3524 #endif /* CONFIG_QDIO_DEBUG */
3525
3526         if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) ||
3527              (count>QDIO_MAX_BUFFERS_PER_Q) ||
3528              (queue_number>QDIO_MAX_QUEUES_PER_IRQ) )
3529                 return -EINVAL;
3530
3531         if (count==0)
3532                 return 0;
3533
3534         irq_ptr = cdev->private->qdio_data;
3535         if (!irq_ptr)
3536                 return -ENODEV;
3537
3538 #ifdef CONFIG_QDIO_DEBUG
3539         if (callflags&QDIO_FLAG_SYNC_INPUT)
3540                 QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number],
3541                               sizeof(void*));
3542         else
3543                 QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number],
3544                               sizeof(void*));
3545         sprintf(dbf_text,"flag%04x",callflags);
3546         QDIO_DBF_TEXT3(0,trace,dbf_text);
3547         sprintf(dbf_text,"qi%02xct%02x",qidx,count);
3548         QDIO_DBF_TEXT3(0,trace,dbf_text);
3549 #endif /* CONFIG_QDIO_DEBUG */
3550
3551         if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE)
3552                 return -EBUSY;
3553
3554         if (callflags&QDIO_FLAG_SYNC_INPUT)
3555                 do_qdio_handle_inbound(irq_ptr->input_qs[queue_number],
3556                                        callflags, qidx, count, buffers);
3557         else if (callflags&QDIO_FLAG_SYNC_OUTPUT)
3558                 do_qdio_handle_outbound(irq_ptr->output_qs[queue_number],
3559                                         callflags, qidx, count, buffers);
3560         else {
3561                 QDIO_DBF_TEXT3(1,trace,"doQD:inv");
3562                 return -EINVAL;
3563         }
3564         return 0;
3565 }
3566
3567 static int
3568 qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
3569                         int buffer_length, int *eof, void *data)
3570 {
3571         int c=0;
3572
3573         /* we are always called with buffer_length=4k, so we all
3574            deliver on the first read */
3575         if (offset>0)
3576                 return 0;
3577
3578 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3579 #ifdef CONFIG_64BIT
3580         _OUTP_IT("Number of tasklet runs (total)                  : %li\n",
3581                  (long)atomic64_read(&perf_stats.tl_runs));
3582         _OUTP_IT("Inbound tasklet runs      tried/retried         : %li/%li\n",
3583                  (long)atomic64_read(&perf_stats.inbound_tl_runs),
3584                  (long)atomic64_read(&perf_stats.inbound_tl_runs_resched));
3585         _OUTP_IT("Inbound-thin tasklet runs tried/retried         : %li/%li\n",
3586                  (long)atomic64_read(&perf_stats.inbound_thin_tl_runs),
3587                  (long)atomic64_read(&perf_stats.inbound_thin_tl_runs_resched));
3588         _OUTP_IT("Outbound tasklet runs     tried/retried         : %li/%li\n",
3589                  (long)atomic64_read(&perf_stats.outbound_tl_runs),
3590                  (long)atomic64_read(&perf_stats.outbound_tl_runs_resched));
3591         _OUTP_IT("\n");
3592         _OUTP_IT("Number of SIGA sync's issued                    : %li\n",
3593                  (long)atomic64_read(&perf_stats.siga_syncs));
3594         _OUTP_IT("Number of SIGA in's issued                      : %li\n",
3595                  (long)atomic64_read(&perf_stats.siga_ins));
3596         _OUTP_IT("Number of SIGA out's issued                     : %li\n",
3597                  (long)atomic64_read(&perf_stats.siga_outs));
3598         _OUTP_IT("Number of PCIs caught                           : %li\n",
3599                  (long)atomic64_read(&perf_stats.pcis));
3600         _OUTP_IT("Number of adapter interrupts caught             : %li\n",
3601                  (long)atomic64_read(&perf_stats.thinints));
3602         _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA)  : %li\n",
3603                  (long)atomic64_read(&perf_stats.fast_reqs));
3604         _OUTP_IT("\n");
3605         _OUTP_IT("Number of inbound transfers                     : %li\n",
3606                  (long)atomic64_read(&perf_stats.inbound_cnt));
3607         _OUTP_IT("Number of do_QDIOs outbound                     : %li\n",
3608                  (long)atomic64_read(&perf_stats.outbound_cnt));
3609 #else /* CONFIG_64BIT */
3610         _OUTP_IT("Number of tasklet runs (total)                  : %i\n",
3611                  atomic_read(&perf_stats.tl_runs));
3612         _OUTP_IT("Inbound tasklet runs      tried/retried         : %i/%i\n",
3613                  atomic_read(&perf_stats.inbound_tl_runs),
3614                  atomic_read(&perf_stats.inbound_tl_runs_resched));
3615         _OUTP_IT("Inbound-thin tasklet runs tried/retried         : %i/%i\n",
3616                  atomic_read(&perf_stats.inbound_thin_tl_runs),
3617                  atomic_read(&perf_stats.inbound_thin_tl_runs_resched));
3618         _OUTP_IT("Outbound tasklet runs     tried/retried         : %i/%i\n",
3619                  atomic_read(&perf_stats.outbound_tl_runs),
3620                  atomic_read(&perf_stats.outbound_tl_runs_resched));
3621         _OUTP_IT("\n");
3622         _OUTP_IT("Number of SIGA sync's issued                    : %i\n",
3623                  atomic_read(&perf_stats.siga_syncs));
3624         _OUTP_IT("Number of SIGA in's issued                      : %i\n",
3625                  atomic_read(&perf_stats.siga_ins));
3626         _OUTP_IT("Number of SIGA out's issued                     : %i\n",
3627                  atomic_read(&perf_stats.siga_outs));
3628         _OUTP_IT("Number of PCIs caught                           : %i\n",
3629                  atomic_read(&perf_stats.pcis));
3630         _OUTP_IT("Number of adapter interrupts caught             : %i\n",
3631                  atomic_read(&perf_stats.thinints));
3632         _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA)  : %i\n",
3633                  atomic_read(&perf_stats.fast_reqs));
3634         _OUTP_IT("\n");
3635         _OUTP_IT("Number of inbound transfers                     : %i\n",
3636                  atomic_read(&perf_stats.inbound_cnt));
3637         _OUTP_IT("Number of do_QDIOs outbound                     : %i\n",
3638                  atomic_read(&perf_stats.outbound_cnt));
3639 #endif /* CONFIG_64BIT */
3640         _OUTP_IT("\n");
3641
3642         return c;
3643 }
3644
3645 static struct proc_dir_entry *qdio_perf_proc_file;
3646
3647 static void
3648 qdio_add_procfs_entry(void)
3649 {
3650         proc_perf_file_registration=0;
3651         qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
3652                                               S_IFREG|0444,&proc_root);
3653         if (qdio_perf_proc_file) {
3654                 qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read;
3655         } else proc_perf_file_registration=-1;
3656
3657         if (proc_perf_file_registration)
3658                 QDIO_PRINT_WARN("was not able to register perf. " \
3659                                 "proc-file (%i).\n",
3660                                 proc_perf_file_registration);
3661 }
3662
3663 static void
3664 qdio_remove_procfs_entry(void)
3665 {
3666         if (!proc_perf_file_registration) /* means if it went ok earlier */
3667                 remove_proc_entry(QDIO_PERF,&proc_root);
3668 }
3669
3670 /**
3671  * attributes in sysfs
3672  *****************************************************************************/
3673
3674 static ssize_t
3675 qdio_performance_stats_show(struct bus_type *bus, char *buf)
3676 {
3677         return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0);
3678 }
3679
3680 static ssize_t
3681 qdio_performance_stats_store(struct bus_type *bus, const char *buf, size_t count)
3682 {
3683         char *tmp;
3684         int i;
3685
3686         i = simple_strtoul(buf, &tmp, 16);
3687         if ((i == 0) || (i == 1)) {
3688                 if (i == qdio_performance_stats)
3689                         return count;
3690                 qdio_performance_stats = i;
3691                 if (i==0) {
3692                         /* reset perf. stat. info */
3693 #ifdef CONFIG_64BIT
3694                         atomic64_set(&perf_stats.tl_runs, 0);
3695                         atomic64_set(&perf_stats.outbound_tl_runs, 0);
3696                         atomic64_set(&perf_stats.inbound_tl_runs, 0);
3697                         atomic64_set(&perf_stats.inbound_tl_runs_resched, 0);
3698                         atomic64_set(&perf_stats.inbound_thin_tl_runs, 0);
3699                         atomic64_set(&perf_stats.inbound_thin_tl_runs_resched,
3700                                      0);
3701                         atomic64_set(&perf_stats.siga_outs, 0);
3702                         atomic64_set(&perf_stats.siga_ins, 0);
3703                         atomic64_set(&perf_stats.siga_syncs, 0);
3704                         atomic64_set(&perf_stats.pcis, 0);
3705                         atomic64_set(&perf_stats.thinints, 0);
3706                         atomic64_set(&perf_stats.fast_reqs, 0);
3707                         atomic64_set(&perf_stats.outbound_cnt, 0);
3708                         atomic64_set(&perf_stats.inbound_cnt, 0);
3709 #else /* CONFIG_64BIT */
3710                         atomic_set(&perf_stats.tl_runs, 0);
3711                         atomic_set(&perf_stats.outbound_tl_runs, 0);
3712                         atomic_set(&perf_stats.inbound_tl_runs, 0);
3713                         atomic_set(&perf_stats.inbound_tl_runs_resched, 0);
3714                         atomic_set(&perf_stats.inbound_thin_tl_runs, 0);
3715                         atomic_set(&perf_stats.inbound_thin_tl_runs_resched, 0);
3716                         atomic_set(&perf_stats.siga_outs, 0);
3717                         atomic_set(&perf_stats.siga_ins, 0);
3718                         atomic_set(&perf_stats.siga_syncs, 0);
3719                         atomic_set(&perf_stats.pcis, 0);
3720                         atomic_set(&perf_stats.thinints, 0);
3721                         atomic_set(&perf_stats.fast_reqs, 0);
3722                         atomic_set(&perf_stats.outbound_cnt, 0);
3723                         atomic_set(&perf_stats.inbound_cnt, 0);
3724 #endif /* CONFIG_64BIT */
3725                 }
3726         } else {
3727                 QDIO_PRINT_ERR("QDIO performance_stats: write 0 or 1 to this file!\n");
3728                 return -EINVAL;
3729         }
3730         return count;
3731 }
3732
3733 static BUS_ATTR(qdio_performance_stats, 0644, qdio_performance_stats_show,
3734                         qdio_performance_stats_store);
3735
3736 static void
3737 tiqdio_register_thinints(void)
3738 {
3739         char dbf_text[20];
3740
3741         tiqdio_ind =
3742                 s390_register_adapter_interrupt(&tiqdio_thinint_handler, NULL);
3743         if (IS_ERR(tiqdio_ind)) {
3744                 sprintf(dbf_text, "regthn%lx", PTR_ERR(tiqdio_ind));
3745                 QDIO_DBF_TEXT0(0,setup,dbf_text);
3746                 QDIO_PRINT_ERR("failed to register adapter handler " \
3747                                "(rc=%li).\nAdapter interrupts might " \
3748                                "not work. Continuing.\n",
3749                                PTR_ERR(tiqdio_ind));
3750                 tiqdio_ind = NULL;
3751         }
3752 }
3753
3754 static void
3755 tiqdio_unregister_thinints(void)
3756 {
3757         if (tiqdio_ind)
3758                 s390_unregister_adapter_interrupt(tiqdio_ind);
3759 }
3760
3761 static int
3762 qdio_get_qdio_memory(void)
3763 {
3764         int i;
3765         indicator_used[0]=1;
3766
3767         for (i=1;i<INDICATORS_PER_CACHELINE;i++)
3768                 indicator_used[i]=0;
3769         indicators = kzalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
3770                              GFP_KERNEL);
3771         if (!indicators)
3772                 return -ENOMEM;
3773         return 0;
3774 }
3775
3776 static void
3777 qdio_release_qdio_memory(void)
3778 {
3779         kfree(indicators);
3780 }
3781
3782 static void
3783 qdio_unregister_dbf_views(void)
3784 {
3785         if (qdio_dbf_setup)
3786                 debug_unregister(qdio_dbf_setup);
3787         if (qdio_dbf_sbal)
3788                 debug_unregister(qdio_dbf_sbal);
3789         if (qdio_dbf_sense)
3790                 debug_unregister(qdio_dbf_sense);
3791         if (qdio_dbf_trace)
3792                 debug_unregister(qdio_dbf_trace);
3793 #ifdef CONFIG_QDIO_DEBUG
3794         if (qdio_dbf_slsb_out)
3795                 debug_unregister(qdio_dbf_slsb_out);
3796         if (qdio_dbf_slsb_in)
3797                 debug_unregister(qdio_dbf_slsb_in);
3798 #endif /* CONFIG_QDIO_DEBUG */
3799 }
3800
3801 static int
3802 qdio_register_dbf_views(void)
3803 {
3804         qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
3805                                       QDIO_DBF_SETUP_PAGES,
3806                                       QDIO_DBF_SETUP_NR_AREAS,
3807                                       QDIO_DBF_SETUP_LEN);
3808         if (!qdio_dbf_setup)
3809                 goto oom;
3810         debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view);
3811         debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
3812
3813         qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
3814                                      QDIO_DBF_SBAL_PAGES,
3815                                      QDIO_DBF_SBAL_NR_AREAS,
3816                                      QDIO_DBF_SBAL_LEN);
3817         if (!qdio_dbf_sbal)
3818                 goto oom;
3819
3820         debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view);
3821         debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
3822
3823         qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
3824                                       QDIO_DBF_SENSE_PAGES,
3825                                       QDIO_DBF_SENSE_NR_AREAS,
3826                                       QDIO_DBF_SENSE_LEN);
3827         if (!qdio_dbf_sense)
3828                 goto oom;
3829
3830         debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view);
3831         debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
3832
3833         qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
3834                                       QDIO_DBF_TRACE_PAGES,
3835                                       QDIO_DBF_TRACE_NR_AREAS,
3836                                       QDIO_DBF_TRACE_LEN);
3837         if (!qdio_dbf_trace)
3838                 goto oom;
3839
3840         debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view);
3841         debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL);
3842
3843 #ifdef CONFIG_QDIO_DEBUG
3844         qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
3845                                          QDIO_DBF_SLSB_OUT_PAGES,
3846                                          QDIO_DBF_SLSB_OUT_NR_AREAS,
3847                                          QDIO_DBF_SLSB_OUT_LEN);
3848         if (!qdio_dbf_slsb_out)
3849                 goto oom;
3850         debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view);
3851         debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
3852
3853         qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
3854                                         QDIO_DBF_SLSB_IN_PAGES,
3855                                         QDIO_DBF_SLSB_IN_NR_AREAS,
3856                                         QDIO_DBF_SLSB_IN_LEN);
3857         if (!qdio_dbf_slsb_in)
3858                 goto oom;
3859         debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view);
3860         debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL);
3861 #endif /* CONFIG_QDIO_DEBUG */
3862         return 0;
3863 oom:
3864         QDIO_PRINT_ERR("not enough memory for dbf.\n");
3865         qdio_unregister_dbf_views();
3866         return -ENOMEM;
3867 }
3868
3869 static void *qdio_mempool_alloc(gfp_t gfp_mask, void *size)
3870 {
3871         return (void *) get_zeroed_page(gfp_mask|GFP_DMA);
3872 }
3873
3874 static void qdio_mempool_free(void *element, void *size)
3875 {
3876         free_page((unsigned long) element);
3877 }
3878
3879 static int __init
3880 init_QDIO(void)
3881 {
3882         int res;
3883         void *ptr;
3884
3885         printk("qdio: loading %s\n",version);
3886
3887         res=qdio_get_qdio_memory();
3888         if (res)
3889                 return res;
3890
3891         qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
3892                                          256, 0, NULL);
3893         if (!qdio_q_cache) {
3894                 qdio_release_qdio_memory();
3895                 return -ENOMEM;
3896         }
3897
3898         res = qdio_register_dbf_views();
3899         if (res) {
3900                 kmem_cache_destroy(qdio_q_cache);
3901                 qdio_release_qdio_memory();
3902                 return res;
3903         }
3904
3905         QDIO_DBF_TEXT0(0,setup,"initQDIO");
3906         res = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
3907
3908         memset((void*)&perf_stats,0,sizeof(perf_stats));
3909         QDIO_DBF_TEXT0(0,setup,"perfstat");
3910         ptr=&perf_stats;
3911         QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
3912
3913         qdio_add_procfs_entry();
3914
3915         qdio_mempool_scssc = mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS,
3916                                             qdio_mempool_alloc,
3917                                             qdio_mempool_free, NULL);
3918
3919         if (tiqdio_check_chsc_availability())
3920                 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3921
3922         tiqdio_register_thinints();
3923
3924         return 0;
3925  }
3926
3927 static void __exit
3928 cleanup_QDIO(void)
3929 {
3930         tiqdio_unregister_thinints();
3931         qdio_remove_procfs_entry();
3932         qdio_release_qdio_memory();
3933         qdio_unregister_dbf_views();
3934         mempool_destroy(qdio_mempool_scssc);
3935         kmem_cache_destroy(qdio_q_cache);
3936         bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
3937         printk("qdio: %s: module removed\n",version);
3938 }
3939
3940 module_init(init_QDIO);
3941 module_exit(cleanup_QDIO);
3942
3943 EXPORT_SYMBOL(qdio_allocate);
3944 EXPORT_SYMBOL(qdio_establish);
3945 EXPORT_SYMBOL(qdio_initialize);
3946 EXPORT_SYMBOL(qdio_activate);
3947 EXPORT_SYMBOL(do_QDIO);
3948 EXPORT_SYMBOL(qdio_shutdown);
3949 EXPORT_SYMBOL(qdio_free);
3950 EXPORT_SYMBOL(qdio_cleanup);
3951 EXPORT_SYMBOL(qdio_synchronize);